U.S. patent application number 14/266978 was filed with the patent office on 2015-11-05 for digital measuring device.
The applicant listed for this patent is CHIANG-KAO CHEN. Invention is credited to CHIANG-KAO CHEN.
Application Number | 20150317894 14/266978 |
Document ID | / |
Family ID | 54355639 |
Filed Date | 2015-11-05 |
United States Patent
Application |
20150317894 |
Kind Code |
A1 |
CHEN; CHIANG-KAO |
November 5, 2015 |
DIGITAL MEASURING DEVICE
Abstract
A digital measuring device includes a housing, at least one
measuring head, at least one measuring sensor, at least one digital
measurement circuit, and at least one power supply unit. The
measuring head is arranged outside the housing. The measuring head
functions to carry out an operation of tightening a tire valve
core, connecting a valve stem, or measuring tire tread. The
measuring sensor is arranged inside the housing and coupled to the
measuring head to measure and detect a detection signal indicating
an output of a tire valve core tightening torque, a tire pressure,
or a tire tread depth. The digital measurement circuit is connected
to the measuring sensor for computing, displaying, and issuing an
alarm regarding the tightening torque that the measuring head
applies to tighten a tire valve core, the tire pressure, or the
tire tread depth. The power supply unit supplies a desired
direct-current working power to the measuring sensor and the
digital measurement circuit. As such, a device that is capable of
digital measurement, displaying, and issuing an alarm regarding the
tire valve core tightening torque, the tire pressure, or the tire
tread depth is formed.
Inventors: |
CHEN; CHIANG-KAO; (NEW
TAIPEI CITY, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHEN; CHIANG-KAO |
NEW TAIPEI CITY |
|
TW |
|
|
Family ID: |
54355639 |
Appl. No.: |
14/266978 |
Filed: |
May 1, 2014 |
Current U.S.
Class: |
340/665 |
Current CPC
Class: |
G08B 21/182 20130101;
B60C 25/00 20130101; G01L 17/00 20130101; B60C 23/0447 20130101;
B60C 23/0496 20130101; Y10T 29/53591 20150115; B60C 29/06
20130101 |
International
Class: |
G08B 21/18 20060101
G08B021/18; B60C 23/04 20060101 B60C023/04 |
Claims
1. A digital measuring device, comprising: a housing; at least one
valve core measuring head, which is arranged outside the housing,
the measuring head being adapted to carry out an operation of
tightening a tire valve core; at least one valve core tightening
torque measuring sensor, which is arranged in the housing and
coupled to the measuring head to measure and detect a detection
signal indicating an output of a tire valve core tightening torque;
at least one digital measurement circuit, which is connected to the
valve core tightening torque measuring sensor for computing,
displaying, and issuing an alarm regarding the tightening torque
that the measuring head applies to tighten the tire valve core; and
at least one power supply unit, which supplies a desired
direct-current working power to the digital measurement
circuit.
2. The digital measuring device as claimed in claim 1, wherein the
housing has a rear end in which a power compartment is formed, the
power compartment receiving and retaining therein the power supply
unit, the power compartment having a rear end opening in which a
thread is formed for threadingly engaging a closure cover for
closing the power compartment.
3. The digital measuring device as claimed in claim 1, wherein the
digital measurement circuit comprises: at least one analog-digital
conversion circuit, which is connected to the valve core tightening
torque measuring sensor to convert the detection signal of the
valve core tightening torque into a digital signal for output; at
least one microprocessor, which is connected to the analog-digital
conversion circuit to receive the valve core tightening torque
digital signal supplied from the analog-digital conversion circuit
for computing and processing the valve core tightening torque and
provide outputs for displaying the valve core tightening torque and
issuing the alarm; at least one pushbutton set, which comprises a
plurality of pushbuttons connected to the microprocessor to be
actuated for inputting a preset alarm threshold for the valve core
tightening torque and supplying a display switching signal to the
microprocessor; at least one display screen, which is connected to
the microprocessor to display the valve core tightening torque; at
least one status indicator, which is connected to the
microprocessor to indicate if the valve core tightening torque is
within a normal operation range; and at least one sound alarm unit,
which is connected to the microprocessor to issue a sound as an
alarm for value of the valve core tightening torque.
4. A digital measuring device, comprising: a housing; a valve core
measuring head, which is arranged outside the housing, the valve
core measuring head being adapted to carry out an operation of
tightening a tire valve core; a tire pressure measuring head, which
is arranged outside the housing, the tire pressure measuring head
being adapted to connect to a tire valve stem; a tire tread depth
measuring head, which is arranged outside the housing, the tire
tread depth measuring head being adapted to carry out an operation
of reaching into and contacting a tire tread; a valve core
tightening torque measuring sensor, which is arranged inside the
housing and coupled to the valve core measuring head to measure and
detect a detection signal indicating an output of a tire valve core
tightening torque; a tire pressure measuring sensor, which is
arranged inside the housing and coupled to the tire pressure
measuring head to measure and detect a detection signal indicating
an output of a tire pressure; a tire tread depth measuring sensor,
which is arranged inside the housing and coupled to the tire tread
depth measuring head to measure and detect a detection signal
indicating an output of a tire tread depth; at least one digital
measurement circuit, which is arranged inside the housing and
connected to the valve core tightening torque measuring sensor, the
tire pressure measuring sensor, and the tire tread depth measuring
sensor to computer, display, and issue alarms regarding the
tightening torque that the valve core tightening torque measuring
head applies to tighten a tire valve core, a tire pressure measured
with the tire pressure measuring head, and a tire tread depth
measured with the tire tread depth measuring head; at least one
wireless communication module, which is arranged inside the housing
to connect with the digital measurement circuit to transmit the
tire valve core tightening torque, the tire pressure, and the tire
tread depth, in a wireless manner, to at least one electronic
device; and at least one power supply unit, which is arranged
inside the housing to supply desired direct-current working powers
to the valve core tightening torque measuring sensor, the tire
pressure measuring sensor, the tire tread depth measuring sensor,
and the digital measurement circuit.
5. The digital measuring device as claimed in claim 4, wherein the
tire tread depth measuring head has an end connected to a retention
seat, a spring, and an operation button to provide the measuring
head with extension elasticity for contacting and pressing, whereby
through actuation or de-actuation of the operation button, the
measuring head is extended or retracted.
6. The digital measuring device as claimed in claim 4, wherein the
digital measurement circuit comprises: three analog-digital
conversion circuits, which are respectively connected to the valve
core tightening torque measuring sensor, the tire pressure
measuring sensor, and the tire tread depth measuring sensor to
respectively convert the detection signals of the valve core
tightening torque, the tire pressure, and the tire tread depth into
digital signals for output; at least one microprocessor, which is
connected to the analog-digital conversion circuits to receive the
valve core tightening torque, the tire pressure, and the tire tread
depth the digital signal supplied from the analog-digital
conversion circuits for computing and processing the valve core
tightening torque, the tire pressure, and the tire tread depth and
provide displaying and outputting of alarms in respect of values of
the valve core tightening torque, the tire pressure, and the tire
tread depth; at least one pushbutton set, which comprises a
plurality of pushbuttons connected to the microprocessor to be
actuated for inputting preset alarm thresholds for the valve core
tightening torque, the tire pressure, and the tire tread depth and
supplying a display switching signals to the microprocessor; at
least one display screen, which is connected to the microprocessor
to display the valve core tightening torque, the tire pressure, and
the tire tread depth; at least one status indicator, which is
connected to the microprocessor to indicate if the valve core
tightening torque, the tire pressure, and the tire tread depth are
respectively within normal operation ranges; at least one sound
alarm unit, which is connected to the microprocessor to issue
sounds as alarms for the values of valve core tightening torque,
the tire pressure, and the tire tread depth; and at least one
vibration alarm unit, which is connected to the microprocessor to
generate vibrating forces as alarms for the values of the valve
core tightening torque, the tire pressure, and the tire tread
depth.
7. The digital measuring device as claimed in claim 1, wherein the
valve core tightening torque measuring sensor comprises a torque
sensor.
8. The digital measuring device as claimed in claim 4, wherein the
valve core tightening torque measuring sensor comprises a torque
sensor.
9. The digital measuring device as claimed in claim 3, wherein the
sound alarm unit comprises a buzzer.
10. The digital measuring device as claimed in claim 6, wherein the
sound alarm unit comprises a buzzer.
11. The digital measuring device as claimed in claim 6, wherein the
vibration alarm unit comprises a vibration motor.
12. The digital measuring device as claimed in claim 4, wherein the
wireless communication module comprises a wireless Bluetooth
communication module.
13. The digital measuring device as claimed in claim 4, wherein the
wireless communication module comprises a wireless communication
module configured with a Wi-Fi communication protocol.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a digital measuring device,
and in particular to a measuring device applicable to digital
measurement of a torque for tightening a tire valve core, a tire
pressure, or a tire tread depth and having fucntions of digital
computation, displaying, and alarm issuing.
[0003] 2. The Related Arts
[0004] A conventional tire valve stem comprises a valve core, which
is a core and a vital component of the tire valve stem and is often
mounted and dismounted by applying an assembling/disassembling
tool. In using a known assembling/disassembling tool to
mount/dismount a valve core, if the torque used to carry out a
loosening or tightening operation is not properly controlled, a
potential risk of air leaking from a tire or damaging the tire
valve stem may result. For example, when the valve core
assembling/disassembling tool does not apply a sufficient torque to
mount and securely fix a valve stem, air leaking from the tire may
occur later. If the valve core assembling/disassembling tool
applies an excessive torque to mount a valve stem and makes the
valve stem over-tightened, the thread of the valve core and the
valve stem may undergo excessive abrasion and may get broken,
leading to an undesired situation of replacing the entire valve
stem. Similar problems of excessive abrasion or breaking of the
threads of the valve core and valve stem may also occur in
dismounting the valve core using the valve core
assembling/disassembling tool.
[0005] Prior art documents in this field are known, such as Taiwan
Utility Models M469205, which discloses a valve stem removing tool;
M464346, which discloses an improved structure of a tool for
removing a valve stem of a tire; M341613, which discloses a valve
core removing member for mounting/dismounting an internal valve
component of a tire valve stem; M340369, which discloses a pulling
device for tire valve stem; US Patent Publication No. 2013333769,
which discloses a "combination tire valve core removal and fluid
fill tool"; PCT application No. WO2005115685, which discloses a
"universal vehicle tire valve core and cap removal and installation
tool", and French patent application No. 2880295, which discloses
an inflatable tire's valve core dismounting tool, which has a
dismounting unit comprising a rod with a pin that is supported
against an extension of a plug when a core is released, where the
extension extends within a body comprising a filtering unit and
perforations. These prior art documents discloses various types or
typical arrangements of known valve stem mounting/dismounting tool.
However, these devices or tools all suffer the same long-existing
problems and drawbacks of the prior art that when the device or
tool is used by a user to mount or dismount a valve stem, it may
potentially have the valve stem under-tightened, leading to a
potential risk of air leaking, or it may have the valve stem
over-tightened, leading to excessive abrasion or even breaking of
the threads of the valve core and valve stem, making it necessary
to replace the entire tire valve stem.
SUMMARY OF THE INVENTION
[0006] Those conventional tire valve stem assembling/disassembling
tools or those tire valve stem assembling/disassembling tools
available from the above named patent documents, when used to carry
out an operation of screwing and mounting a valve core in a tire
valve stem, does not provide precise measurement, alarm, and
control of torque and consequently may result in under-tightening
of the valve core of the tire valve stem and thus air leaking; or
may have the valve core over-tightened, leading to excessive
abrasion and breaking of the threads of the valve cores and the
valve stem, making it necessary to replace the entire valve
stem.
[0007] Thus, the present invention provides a digital measuring
device, which comprises:
[0008] a housing;
[0009] at least one valve core measuring head, which is arranged
outside the housing, the measuring head being adapted to carry out
an operation of tightening a tire valve core;
[0010] at least one valve core tightening torque measuring sensor,
which is arranged in the housing and coupled to the measuring head
to measure and detect a detection signal indicating an output of a
tire valve core tightening torque;
[0011] at least one digital measurement circuit, which is connected
to the valve core tightening torque measuring sensor for computing,
displaying, and issuing an alarm regarding the tightening torque
that the measuring head applies to tighten the tire valve core;
and
[0012] at least one power supply unit, which supplies a desired
direct-current working power to the digital measurement
circuit.
[0013] Further, in the above-described digital measuring device
according to the present invention, the valve core tightening
torque measuring sensor comprises a torque sensor.
[0014] Further, in the above-described digital measuring device
according to the present invention, the digital measurement circuit
comprises:
[0015] at least one analog-digital conversion circuit, which is
connected to the valve core tightening torque measuring sensor to
convert the detection signal of the valve core tightening torque
into a digital signal for output;
[0016] at least one microprocessor, which is connected to the
analog-digital conversion circuit to receive the valve core
tightening torque digital signal supplied from the analog-digital
conversion circuit for computing and processing the valve core
tightening torque and provide outputs for displaying the valve core
tightening torque and issuing the alarm;
[0017] at least one pushbutton set, which comprises a plurality of
pushbuttons connected to the microprocessor to be actuated for
inputting a preset alarm threshold for the valve core tightening
torque and supplying a display switching signal to the
microprocessor;
[0018] at least one display screen, which is connected to the
microprocessor to display the valve core tightening torque;
[0019] at least one status indicator, which is connected to the
microprocessor to indicate if the valve core tightening torque is
within a normal operation range; and
[0020] at least one sound alarm unit, which is connected to the
microprocessor to issue a sound as an alarm for value of the valve
core tightening torque.
[0021] The present invention also provides a digital measuring
device, which comprises:
[0022] a housing;
[0023] a valve core measuring head, which is arranged outside the
housing, the valve core measuring head being adapted to carry out
an operation of tightening a tire valve core;
[0024] a tire pressure measuring head, which is arranged outside
the housing, the tire pressure measuring head being adapted to
connect to a tire valve stem;
[0025] a tire tread depth measuring head, which is arranged outside
the housing, the tire tread depth measuring head being adapted to
carry out an operation of reaching into and contacting a tire
tread;
[0026] a valve core tightening torque measuring sensor, which is
arranged inside the housing and coupled to the valve core measuring
head to measure and detect a detection signal indicating an output
of a tire valve core tightening torque;
[0027] a tire pressure measuring sensor, which is arranged inside
the housing and coupled to the tire pressure measuring head to
measure and detect a detection signal indicating an output of a
tire pressure;
[0028] a tire tread depth measuring sensor, which is arranged
inside the housing and coupled to the tire tread depth measuring
head to measure and detect a detection signal indicating an output
of a tire tread depth;
[0029] at least one digital measurement circuit, which is arranged
inside the housing and connected to the valve core tightening
torque measuring sensor, the tire pressure measuring sensor, and
the tire tread depth measuring sensor to computer, display, and
issue alarms regarding the tightening torque that the valve core
tightening torque measuring head applies to tighten a tire valve
core, a tire pressure measured with the tire pressure measuring
head, and a tire tread depth measured with the tire tread depth
measuring head;
[0030] at least one wireless communication module, which is
arranged inside the housing to connect with the digital measurement
circuit to transmit the tire valve core tightening torque, the tire
pressure, and the tire tread depth, in a wireless manner, to at
least one electronic device; and
[0031] at least one power supply unit, which is arranged inside the
housing to supply desired direct-current working powers to the
valve core tightening torque measuring sensor, the tire pressure
measuring sensor, the tire tread depth measuring sensor, and the
digital measurement circuit.
[0032] Further, in the above-described digital measuring device
according to the present invention, the digital measurement circuit
comprises:
[0033] three analog-digital conversion circuits, which are
respectively connected to the valve core tightening torque
measuring sensor, the tire pressure measuring sensor, and the tire
tread depth measuring sensor to respectively convert the detection
signals of the valve core tightening torque, the tire pressure, and
the tire tread depth into digital signals for output;
[0034] at least one microprocessor, which is connected to the
analog-digital conversion circuits to receive the valve core
tightening torque, the tire pressure, and the tire tread depth the
digital signal supplied from the analog-digital conversion circuits
for computing and processing the valve core tightening torque, the
tire pressure, and the tire tread depth and provide displaying and
outputting of alarms in respect of values of the valve core
tightening torque, the tire pressure, and the tire tread depth;
[0035] at least one pushbutton set, which is connected to the
microprocessor to be actuated for inputting preset alarm thresholds
for the valve core tightening torque, the tire pressure, and the
tire tread depth and supplying a display switching signals to the
microprocessor;
[0036] at least one display screen, which is connected to the
microprocessor to display the valve core tightening torque, the
tire pressure, and the tire tread depth;
[0037] at least one status indicator, which is connected to the
microprocessor to indicate if the valve core tightening torque, the
tire pressure, and the tire tread depth are respectively within
normal operation ranges;
[0038] at least one sound alarm unit, which is connected to the
microprocessor to issue sounds as alarms for the values of valve
core tightening torque, the tire pressure, and the tire tread
depth; and
[0039] at least one vibration alarm unit, which is connected to the
microprocessor to generate vibrating forces as alarms for the
values of the valve core tightening torque, the tire pressure, and
the tire tread depth.
[0040] In the above-described digital measuring device according to
the present invention, the wireless communication module comprises
a wireless Bluetooth communication module.
[0041] In the above-described digital measuring device according to
the present invention, the wireless communication module comprises
a wireless communication module configured with a Wi-Fi
communication protocol.
[0042] The effectiveness of the digital measuring device according
to the present invention is that a valve core measuring head is
used as a device for carrying out an operation of tightening a
valve core of a tire valve stem and a valve core tightening torque
measuring sensor and a digital measurement circuit are used to
achieve measurement, displaying, and issuing an alarm regarding the
tightening torque of the valve core so as to allow a user to ensure
preciseness of the torque and protection of the tire valve core
with an operation of tightening the tire valve core, whereby the
tire valve stem and the valve core do not suffer excessive abrasion
and breaking of the threads thereof and the valve core can be
mounted in a valve stem in an intact and secured manner. On the
other hand, the digital measurement circuit can be coupled to
measuring heads and measuring sensors for tire pressure and tire
tread depth and a wireless communication module to allow the
applications of the present invention to include displaying,
alarming, and wireless transmission of the valve core tightening
torque, the tire pressure, and the tire tread depth thereby
achieving multiple functions of measuring parameters of tires.
BRIEF DESCRIPTION OF THE DRAWINGS
[0043] The present invention will be apparent to those skilled in
the art by reading the following description of preferred
embodiments thereof, with reference to the attached drawings,
wherein:
[0044] FIG. 1 is a perspective view showing a digital measuring
device constructed in accordance with a first embodiment of the
present invention;
[0045] FIG. 2 is a cross-sectional view of FIG. 1;
[0046] FIG. 3 is a perspective view showing a measuring head, a
measuring sensor, a digital measurement circuit, and power supply
unit of the digital measuring device of FIG. 2;
[0047] FIG. 4 is a top plan view of FIG. 1;
[0048] FIG. 5 is a block diagram of the digital measurement circuit
of FIG. 2;
[0049] FIG. 6 is a perspective view showing a digital measuring
device constructed in accordance with a second embodiment of the
present invention;
[0050] FIG. 7 is a cross-sectional view of FIG. 6;
[0051] FIG. 8 is a top plan view of FIG. 6;
[0052] FIG. 9 is a perspective view showing a measuring head, a
measuring sensor, a digital measurement circuit, and power supply
unit of the digital measuring device of FIG. 6;
[0053] FIG. 10 is a different perspective view of FIG. 9; and
[0054] FIG. 11 is a block diagram of the digital measurement
circuit of FIGS. 9 and 10.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0055] With reference to the drawings and in particular to FIGS. 1,
2, 3, and 4, a digital measuring device 100 constructed in
accordance with a first embodiment of the present invention is
shown. The digital measuring device 100 comprises a housing 10,
which is not limited to any specific shape and configuration and is
made in the form of a screwdriver handle in the first embodiment of
the present invention. The housing 10 has a rear end in which a
power compartment 11 is formed. The power compartment 11 has a rear
end opening in which a thread 111 is formed for threadingly
engaging with a closure cover 12 to close the power compartment
11.
[0056] At least one measuring head 20 is arranged externally of the
housing 10. The measuring head 20 is configured as a tire valve
core tightening tool for carrying out a tightening operation of a
tire valve core.
[0057] At least one measuring sensor 30 is arranged inside the
housing 10 and is coupled to the measuring head 20. The measuring
sensor 30 comprises a torque sensor for measuring and outputting a
detection signal 30a indicating a tightening torque of the tire
valve core (as shown in FIG. 5).
[0058] Further referring to FIG. 5, at least one digital
measurement circuit 40 is connected to the above described valve
core tightening torque measuring sensor 30. The digital measurement
circuit 40 is not limited to any specific form and in the first
embodiment of the present invention is shown, as an illustrative
example, comprising at least one analog-digital conversion circuit
41, at least one microprocessor 42, at least one pushbutton set 43,
at least one display screen 44, at least one status indicator 45,
and at least one sound alarm unit 46. The analog-digital conversion
circuit 41 is connected to the valve core tightening torque
measuring sensor 30 to convert the detection signal 30a of the tire
valve core tightening torque into a digital signal 41a for
output.
[0059] The microprocessor 42 is connected to the analog-digital
conversion circuit 41 to receive the valve core tightening torque
digital signal 41 supplied from the analog-digital conversion
circuit 41 and to compute and process the valve core tightening
torque value for providing displaying and outputting of an alarm in
respect of the value of the valve core tightening torque.
[0060] The pushbutton set 43 comprises a plurality of pushbuttons
431, 432 connected to the microprocessor 42 to be actuated for
inputting a preset alarm threshold for the valve core tightening
torque and supplying a display switching signal to the
microprocessor 42.
[0061] The display screen 44 is connected to the microprocessor 42
to display the torque value of tightening the valve core.
[0062] The status indicator 45 is connected to the microprocessor
42 to indicate if the valve core tightening torque is within a
normal operation range. The status indicator 45 is not limited to
any specific form and in the present invention, a light-emitting
diode (LED) light is used as an example.
[0063] The sound alarm unit 46 is connected to the microprocessor
42 to issue a sound as an alarm for the value of the valve core
tightening torque. The sound alarm unit 46 is not limited to any
specific form and in the present invention, a buzzer is used as an
example. Other equivalent sound alarm device, such as a speaker,
may also be used and is considered within the scope of the present
invention.
[0064] The digital measurement circuit 40 may function to compute,
display, and issue an alarm regarding a tightening torque that the
valve core measuring head 20 is applied to tighten a tire valve
core.
[0065] At least one power supply unit 50 is received and retained
in the power compartment 12 of the housing 10 to supply a desired
direct-current working power to the measuring sensor 30 and the
digital measurement circuit 40. The power supply unit 50 is not
limited to any specific form and in the present invention, an
electrical battery is used as an example.
[0066] Referring to FIGS. 6, 7, 8, 9, 10, and 11, a digital
measuring device 100 according to a second embodiment of the
present invention is shown. The housing 10 is made in the form of
an L-shaped handle. Three measuring heads 20, 201, 202 are formed
on and externally of the housing 10. The measuring heads 20, 201,
202 are respectively an operation head for carrying out a
tightening operation of a tire valve core, an operation head for
connection with a valve stem of a tire, and an operation head for
reaching into and carrying out measurement of tire tread. The
measuring head 202 has an end connected to a retention seat 202a, a
spring 202b, and an operation button 202c to provide the measuring
head 202 with extension elasticity for contacting and pressing,
whereby through actuation or de-actuation of the operation button
202c, the measuring head 202 is extended or retracted for
contacting and measuring the depth of the tire tread.
[0067] Three measuring sensors 30, 301, 302 are arranged inside the
housing 10 and are respectively coupled to the measuring heads 20,
201, 202 for measuring and detecting a detection signal 30a
indicating an output of a tire valve core tightening torque,
measuring and detecting a detection signal 301a indicating an
output of the tire pressure, and measuring and detecting a
detection signal 302a indicating an output of tire tread depth. The
tire pressure measuring sensor 301 is not limited to any specific
form and in the present invention, a pressure sensor is used as an
example. The tire tread depth measuring sensor 302 can be a
displacement sensor or a photoelectrical sensor.
[0068] The digital measurement circuit 401 is arranged in the
housing 10 and is connected to the valve core tightening torque
measuring sensor 30, the tire pressure measuring sensor 301, and
the tire tread depth measuring sensor 302. The digital measurement
circuit 401 comprises three analog-digital conversion circuits
4011, 4012, 4013, at least one microprocessor 4014, at least one
pushbutton set 4015, at least one display screen 4016, at least one
status indicator 4017, at least one sound alarm unit 4018, and at
least one vibration alarm unit 4019. The three analog-digital
conversion circuits 4011, 4012, 4013 are respectively connected to
the valve core tightening torque measuring sensor 30, the tire
pressure measuring sensor 301, and the tire tread depth measuring
sensor 302 for converting detection signals of a tire valve core
tightening torque, a tire pressure, and a tire tread depth into
three digital signals 4011a, 4012a, 4013a for output.
[0069] The microprocessor 4014 is connected to the analog-digital
conversion circuits 4011, 4012, 4013 to receive the three digital
signals 4011a, 4012a, 4013a of the valve core tightening torque,
the tire pressure. and the tire tread depth supplied from the
analog-digital conversion circuits 4011, 4012, 4013 for computing
and processing the valve core tightening torque, the tire pressure,
and the tire tread depth and providing displaying and outputting of
alarms in respect of the values of the valve core tightening
torque, the tire pressure, and the tire tread depth.
[0070] The pushbutton set 4015 comprises three pushbuttons 4015a,
4015b, 4015c connected to the microprocessor 4014 to be actuated
for inputting preset alarm thresholds for the valve core tightening
torque, the tire pressure, and the tire tread depth and supplying a
display switching signal to the microprocessor 4014.
[0071] The display screen 4016 is connected to the microprocessor
4014 to display the valve core tightening torque, the tire
pressure, and the tire tread depth. The display screen 4016 may
comprise a liquid crystal display screen.
[0072] The status indicator 4017 is connected to the microprocessor
4014 to indicate if the valve core tightening torque, the tire
pressure, and the tire tread depth are respectively within normal
operation ranges. The status indicator 4017 may comprise an LED
light.
[0073] The sound alarm unit 4018 is connected to the microprocessor
4014 to issue sounds as alarms for the values of valve core
tightening torque, the tire pressure, and the tire tread depth. The
sound alarm unit 4018 may comprise a buzzer.
[0074] The vibration alarm unit 4019 is connected to the
microprocessor 4014 to generate vibrating forces as alarms for the
values of the valve core tightening torque, the tire pressure, and
the tire tread depth. The vibration alarm unit 4019 may comprise a
vibration motor.
[0075] With the above arrangement, the digital measurement circuit
401 functions to compute, display, and issue alarms regarding a
tightening torque that the valve core tightening torque measuring
head 20 is applied to tighten a tire valve core, a tire pressure
measured with the tire pressure measuring head 201, and a tire
tread depth measured with the tire tread depth measuring head
202.
[0076] At least one wireless communication module 60 is arranged
inside the housing 10 and is connected to the microprocessor 4014
of the digital measurement circuit 401 to transmit, in a wireless
manner, the ire valve core tightening torque, the tire pressure,
and the tire tread depth to at least one electronic device 200. The
electronic device 200 is not limited to any specific form and can
be for example a computer, a notebook computer, a tablet computer,
and a mobile phone that has a function of wireless network
connection and communication. The wireless communication module 60
is not limited to any specific form and comprises, in the present
invention, a Bluetooth wireless communication module or a wireless
communication module configured with Wi-Fi wireless communication
protocol.
[0077] At least one power supply unit 50 is received and retained
in the power compartment 11 of the housing 10 to supply desired
direct-current working powers to the valve core tightening torque
measuring sensor 30, the tire pressure measuring sensor 301, the
tire tread depth measuring sensor 302, and the digital measurement
circuit 401. The power supply unit 50 may comprise an electrical
battery.
[0078] Although the present invention has been described with
reference to the preferred embodiments thereof, it is apparent to
those skilled in the art that a variety of modifications and
changes may be made without departing from the scope of the present
invention which is intended to be defined by the appended
claims.
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