U.S. patent application number 11/266280 was filed with the patent office on 2007-05-17 for brake drawing system.
This patent application is currently assigned to Heng tong Machinery Co., Ltd.. Invention is credited to Yuan-Hsiang Jen, Chun-Chin Wang.
Application Number | 20070107995 11/266280 |
Document ID | / |
Family ID | 38039599 |
Filed Date | 2007-05-17 |
United States Patent
Application |
20070107995 |
Kind Code |
A1 |
Jen; Yuan-Hsiang ; et
al. |
May 17, 2007 |
Brake drawing system
Abstract
A brake drawing system applied in bikes and any motor vehicle
provided with handbrake and pedal driven brake operates by having a
pull rod to drive a push rod to engage in linearly reciprocal
motion for activating the brake; a brake lever pin on the pull rod
constituting transmission between push rod and pull rod; the push
rod penetrating an adjustment bushing on the brake lever pin to
adjust brake openness by changing relative positions between sleeve
and brake lever pin without interfering with the push rod to
maintain pull rod openness as adjusted.
Inventors: |
Jen; Yuan-Hsiang; (Dasi
Township, TW) ; Wang; Chun-Chin; (Dasi Township,
TW) |
Correspondence
Address: |
TROXELL LAW OFFICE PLLC
SUITE 1404
5205 LEESBURG PIKE
FALLS CHURCH
VA
22041
US
|
Assignee: |
Heng tong Machinery Co.,
Ltd.
|
Family ID: |
38039599 |
Appl. No.: |
11/266280 |
Filed: |
November 4, 2005 |
Current U.S.
Class: |
188/67 ;
188/72.1 |
Current CPC
Class: |
B62K 23/06 20130101;
B62L 3/023 20130101 |
Class at
Publication: |
188/067 ;
188/072.1 |
International
Class: |
B65H 59/10 20060101
B65H059/10 |
Claims
1. A brake drawing system to activate brake installation by having
a brake pull rod to drive a push rod to engage in linearly
reciprocal motion; a pin lever being axially provided on the brake
pull rod to constitute transmission between the push rod and the
brake pull rod; an adjustment bushing be fastened to the pin lever
to permit insertion by the push rod to adjust openness of the brake
pull rod without inferring with revolving at own axis by the push
rod by changing relative positions between the adjustment bushing
and the pin lever.
2. The brake drawing system of claim 1, wherein a gradation is
provided at the tail of the push rod that penetrates the adjustment
bushing, and is clamping by a locking ring to where the push rod
leaves the adjustment bushing to constitute coupling of
transmission between the push rod and the adjustment bushing.
3. The brake drawing system of claim 1, wherein s locking ring is
each to the push rod in relation to where externally to both ends
of an adjustment bushing to constitute coupling between the push
rod and the adjustment bushing.
4. The brake drawing system of claim 1, wherein an adjustment nut
is externally disposed to where the adjustment bushing is provide
to the brake lever pin.
Description
BACKGROUND OF THE INVENTION
[0001] (a) Field of the Invention
[0002] The present invention is related to a brake drawing system
applied in bikes and any motor vehicle provided with handbrake and
pedal driven brake, and more particularly to one that allows easy
adjustment and assured maintenance of the openness of the brake
pull rod.
[0003] (b) Description of the Prior Art
[0004] Most of motorcycles or beach mobiles are engine power driven
motor vehicles so they could get the greater output of kinetics to
operate or by repeatedly stepping on a pair of pedals to drive both
wheels for revolving at higher speed in case of a bike. In either
case, a high efficiency brake system must be provided to have the
wheels turning at high rpm to return to still status in the least
time. Disk brake and drum brake at present are the most popular and
reliable braking systems. In the disk brake, a disk or a drum is
concentrically disposed at and synchronously turning with the wheel
hub; and by taking advantage the fact that the liquid is prevented
from compression and the Pascal's Law (states that pressure applied
to a confined fluid at any point is transmitted undiminished
through out the fluid in all directions and acts upon all the parts
of the confined vessel at right angles to its interior surfaces and
equally upon equal areas), a brake shoe is hydraulically driven to
clamp on the disk to produce friction between the brake shoe and
the disk or drum to stop the wheel.
[0005] In the entire disk brake system, the braking is achieved by
having a pair of sliding calipers that push the brake shoe or the
drum connected through hydraulic piping a hydraulic cylinder; and
the brake pull rod pushes brake oil in the hydraulic cylinder to
take advantage of hydraulic power to push the pair of calipers or a
piston in the brake drum. The resultant placement by the push from
the piston moves a lining for it to contact the brake disk or drum.
As illustrated in FIG. 1 of the accompanying drawings for a
sectional view of a brake drawing system of the prior art, the
drawing system is comprised of a hydraulic cylinder 20 fixed to a
support bracket 10 and pivoted with a brake pull rod 30. The brake
pull rod 30 is coupled to a push rod 21 of the hydraulic cylinder
20 with a brake lever pin 31. Accordingly, once the pull rod 30
swings as drawn by the user, the swing is transmitted through the
brake lever pin 31 to the push rod 21, where a piston 22 coupled to
the push rod 21 pushes hydraulic oil inside the hydraulic cylinder
20 to apply the brake.
[0006] Whereas the motive power for a handbrake or a pedal driven
brake comes from the action of the brake pull rod 30 in a brake
drawing system, the openness of the brake pull rod 30 affects the
action the brake pull rod 30 permits and the manipulation by the
drive or the rider. Consequently, multiple teeth are provided on
the push rod 21 and corresponding threaded holes are disposed on
the brake lever pin 31 to constitute the coupling between the push
rod 21 and the brake lever pin 31. If necessarily, changing the
relative positions between the push rod 21 and the brake lever pin
31 by turning the push rod 21 will achieve the purpose of adjusting
the openness 30 of the brake pull rod 30.
[0007] However, in practice, a wrench is needed to hold and turn
the push rod 21 to fail immediate adjustment of the openness of the
brake pull rod. It also prevents from maintaining the adjusted
openness since the linearly reciprocal motion of the push rod 21
will cause it to revolve on its own axis to change the relative
positions between the push rod 21 and the brake lever pin 31, thus
to change the openness of the brake push rod 21.
SUMMARY OF THE INVENTION
[0008] The primary purpose of the present invention is to provide
an improved brake drawing system that is capable of maintaining the
openness of the push rod as adjusted. To achieve the purpose, an
adjustment bushing is fastened to the brake lever pin for the push
rod to penetrate through. Adjusting the openness of the brake pull
rod by changing the relative positions between the adjustment
bushing and the brake lever pin will maintain the openness of the
brake pull rod as adjusted without interfering with the push
rod.
[0009] In practice, a graded section is provided on the tail of the
push rod to allow penetration by the adjustment bushing; a clip is
used to clamp at where the push rod leaves the adjustment bushing
to constitute the coupling between the push rod and the adjustment
bushing; and a nut is disposed externally to the brake lever pin
for the user to directly turn the adjustment bushing by fingers as
immediate adjustment of the openness of the brake pull rod
warrants.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a sectional view of a brake drawing system of the
prior art.
[0011] FIG. 2 is a perspective view of the present invention.
[0012] FIG. 3 is an exploded view of the present invention.
[0013] FIG. 4 is a sectional view of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] A brake drawing system of the present invention as
illustrated in FIGS. 2, 3, and 4 is essentially comprised of a
support bracket 10 fixed with a hydraulic cylinder 20 and pivoted
with a brake pull rod 30. Using the support bracket 10, the entire
brake drawing system is mounted to a handle 40 of a motorcycle,
beach mobile or bicycle. Wherein, a pin lever 31 is axially
disposed on the brake pull rod 30 to constitute transmission
between the push rod 21 of the hydraulic cylinder 20 and the pull
rod 30, and the transmission is converted through the swing by the
brake pull rod 30 into linear motion executed b the push rod
21.
[0015] An adjustment bushing 32 is fastened to the pin lever 31 to
allow penetration by the push rod 21. Turning the adjustment
bushing 32 changes relative positions between the adjustment
bushing 32 and the pin lever 31; accordingly, openness of the brake
pull or 30 is adjusted without interfering the push rod 21 to
revolve on its axis so to ensure of maintaining the openness of the
brake pull rod 30 as adjusted.
[0016] In practice, a gradation 211 to penetrate through the
adjustment bushing 32 is disposed at the tail of the push rod 21,
and clamped by means of a locking ring 23 at where the push rod
leaves the adjustment bushing 32 to constitute the coupling of the
transmission between the push rod 21 and the adjustment bushing 32.
A locking ring (not illustrated) is each to the push rod 21 in
relation to where externally to both ends of an adjustment bushing
32. Furthermore, an adjustment nut is provided to the adjustment
bushing 32 at where externally to the pin lever 31 for the user to
directly turn the adjustment bushing 32 for immediate adjustment
the openness of the brake pull rod 21.
[0017] The prevent invention provides an improved structure of a
brake drawing system applied in bikes and automobiles, and the
application for a utility patent is duly filed accordingly.
However, it is to be noted that the preferred embodiments disclosed
in the specification and the accompanying drawings are not limiting
the present invention; and that any construction, installation, or
characteristics that is same or similar to that of the present
invention should fall within the scope of the purposes and claims
of the present invention.
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