U.S. patent application number 17/108133 was filed with the patent office on 2022-06-02 for abrasive wheel which can be provided with a sandpaper.
The applicant listed for this patent is FORTUNE EXTENDABLES CORP.. Invention is credited to Yu-Chun LIU.
Application Number | 20220168868 17/108133 |
Document ID | / |
Family ID | 1000005253984 |
Filed Date | 2022-06-02 |
United States Patent
Application |
20220168868 |
Kind Code |
A1 |
LIU; Yu-Chun |
June 2, 2022 |
ABRASIVE WHEEL WHICH CAN BE PROVIDED WITH A SANDPAPER
Abstract
An abrasive wheel provided with a piece of sandpaper, including
a columnar main body and a tension member. A first surface is
formed on the periphery of the main body. The main body forms first
and second storage chambers. The first surface forms a channel
communicating with the first storage chamber. The second storage
chamber extends on one side of the channel, so that one end of a
piece of sandpaper enters the first storage chamber to form a
restricted part. The other end of the sandpaper is located in the
second storage chamber. The tension member is disposed in the first
storage chamber, and is provided with a guide slot, so that the
restricted part enters the guide slot through the channel, and the
restricted part is guided to adhere to the circumferential wall as
the tension member rotates, the sandpaper stretches tight and
adheres to the first surface.
Inventors: |
LIU; Yu-Chun; (Taichung
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
FORTUNE EXTENDABLES CORP. |
Taichung City |
|
TW |
|
|
Family ID: |
1000005253984 |
Appl. No.: |
17/108133 |
Filed: |
December 1, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B24D 9/06 20130101 |
International
Class: |
B24D 9/06 20060101
B24D009/06 |
Claims
1. An abrasive wheel which can be provided with a piece of
sandpaper, including: a columnar main body, the main body has a
mounting end and a driven end; the mounting end is opposite to the
driven end in the axial direction of the main body; a first surface
is formed on the circumference of the main body; the first surface
is located between the mounting end and the driven end, so that a
piece of sandpaper is arranged on the first surface; a first
storage chamber and a second storage chamber are formed inside the
main body; the first storage chamber and the second storage chamber
extend into the main body from the mounting end respectively; the
first surface forms a channel, one end of the channel extends at
the mounting end, the other end of the channel points at the driven
end; the channel extends into the main body, and the channel
communicates with the first storage chamber; the second storage
chamber extends on one side of the channel, so that one end of the
sandpaper enters the first storage chamber to form a restricted
part; the other end of the sandpaper is located in the second
storage chamber; the first storage chamber has a compass
circumferential wall; and a tension member, the tension member is
disposed in the first storage chamber, and can rotate in the first
storage chamber; the tension member has a guide slot, the guide
slot extends from the periphery of the tension member into the
tension member, so that the restricted part enters the guide slot
through the channel, and the restricted part is guided to adhere to
the circumferential wall as the tension member rotates, and then
the tension member and the circumferential wall oppositely press
and localize the restricted part, and the sandpaper is stretched
tight and adhering to the first surface.
2. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 1, wherein the tension member has a
pushing part, so that the pushing part pushes the restricted part
to move towards the channel, and then the sandpaper can be
removed.
3. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 2, wherein the tension member has a
second surface, the second surface is formed on the periphery of
the tension member, so that the circumferential wall and the second
surface oppositely press and localize the restricted part; the
tension member forms a second slot wall on one side of the guide
slot; the pushing part is formed at the conjoiner of the second
slot wall and the second surface.
4. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 2, wherein the tension member is
provided with a slot, the slot extends from the periphery of the
tension member into the tension member; the periphery of the
tension member forms a second surface and a third surface between
the guide slot and the slot, so that the circumferential wall and
the second surface oppositely press and localize the restricted
part; the tension member forms a third slot wall on one side of the
slot; the pushing part is formed at the conjoiner of the third slot
wall and the third surface.
5. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 1, wherein the main body is provided
with a baffle, the tension member is located between the baffle and
the driven end; the baffle stops the tension member, so as to
localize the tension member on the main body.
6. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 5, wherein the mounting end forms a
compass flange in axial direction, the flange is disposed on the
periphery of the baffle, so as to localize the baffle.
7. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 5, including a shaft lever and a bolt,
wherein the shaft lever axially contacts the driven end, so that
the shaft lever is configured on a rotary driving device; the bolt
axially penetrates the baffle and the tension member is screwed on
the shaft lever, so as to localize the baffle.
8. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 7, wherein the driven end forms a joint
holder in axial direction, the joint holder forms a polygonal
embedding groove in axial direction; the shaft lever is provided
with an insert fitting the embedding groove; the insert is embedded
in the embedding groove, so that the shaft lever axially contacts
the driven end.
9. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 1, wherein the tension member forms an
operation hole in axial direction, so that a hand tool can be
embedded in the operation hole to pull the tension member to
rotate.
10. The abrasive wheel which can be provided with a piece of
sandpaper defined in claim 1, wherein the first surface is
approximately in the shape of circular arc.
Description
CROSS-REFERENCE TO RELATED U.S. APPLICATIONS
[0001] Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable.
NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT
[0003] Not applicable.
REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISC
[0004] Not applicable.
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0005] The present invention relates generally to a tool for
grinding or polishing, and more particularly to an abrasive wheel
which can be provided with a piece of sandpaper.
2. Description of Related Art Including Information Disclosed Under
37 CFR 1.97 And 37 CFR 1.98
[0006] The known abrasive wheel has a drum-shaped main body with a
circular outer surface. The outer surface surrounds the axis of the
main body. A slot is formed axially in the outer surface. A piece
of sandpaper is stretched tight and adheres to the outer surface.
Both ends of the sandpaper are inserted in the slot respectively.
When the abrasive wheel is rotating, the sandpaper can grind or
polish a workpiece. The main body can be provided with a piece of
sandpaper of the corresponding specification according to different
machining requirements.
[0007] When the sandpaper processes the workpiece, relative
friction is formed between the sandpaper and the workpiece, and the
sandpaper extends and deforms gradually, so that the tension of the
sandpaper decreases gradually and the reliability of processing is
influenced. On the other hand, it is difficult to stretch the
sandpaper tight, and the convenience of changing the sandpaper is
influenced.
BRIEF SUMMARY OF THE INVENTION
[0008] The primary objective of the present invention is to provide
an abrasive wheel which can be provided with a piece of sandpaper.
It is a novel abrasive wheel which is easy to be provided with a
piece of sandpaper.
[0009] Based on the aforementioned objective, the technical
characteristic of problem solving of the present invention is that
the abrasive wheel which can be provided with a piece of sandpaper
comprises: a columnar main body with a mounting end and a driven
end. The mounting end is opposite to the driven end in the axial
direction of the main body. A first surface is formed on the
circumference of the main body. The first surface is located
between the mounting end and the driven end, so that a piece of
sandpaper is arranged on the first surface. A first storage chamber
and a second storage chamber are formed inside the main body. The
first storage chamber and the second storage chamber extend into
the main body from the mounting end respectively. The first surface
forms a channel, one end of the channel extends at the mounting
end, the other end of the channel points at the driven end. The
channel extends into the main body, and the channel communicates
with the first storage chamber. The second storage chamber extends
on one side of the channel, so that one end of the sandpaper enters
the first storage chamber to form a restricted part. The other end
of the sandpaper is located in the second storage chamber. The
first storage chamber has a compass circumferential wall.
[0010] The abrasive wheel further comprises a tension member
disposed in the first storage chamber, and which can rotate in the
first storage chamber. The tension member has a guide slot, the
guide slot extends from the periphery of the tension member into
the tension member, so that the restricted part enters the guide
slot through the channel, and the restricted part is guided to
adhere to the circumferential wall as the tension member rotates,
and then the tension member and the circumferential wall oppositely
press and localize the restricted part, and the sandpaper is
stretched tight and adhering to the first surface.
[0011] The main effect and advantage of the present invention are
easy installation of the sandpaper.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0012] FIG. 1 is the stereogram of Embodiment 1 of the present
invention.
[0013] FIG. 2 is the three-dimensional exploded diagram of
Embodiment 1 of the present invention.
[0014] FIG. 3 is the axial section view of Embodiment 1 of the
present invention.
[0015] FIG. 4 is the three-dimensional diagram of main body and
mounting sandpaper by tension member in Embodiment 1 of the present
invention.
[0016] FIG. 5 is the front view of sandpaper mounting state in FIG.
4.
[0017] FIG. 6 is the front view of main body and positioning
sandpaper by tension member in Embodiment 1 of the present
invention.
[0018] FIG. 7 is the drawing of partial enlargement of FIG. 6.
[0019] FIG. 8 is the front view of sandpaper removing operation in
Embodiment 1 of the present invention.
[0020] FIG. 9 is the drawing of partial enlargement of FIG. 8.
[0021] FIG. 10 is the front view of main body and clamping piece in
Embodiment 2 of the present invention, presenting the state of
sandpaper removing operation.
DETAILED DESCRIPTION OF THE INVENTION
[0022] The embodiments of the abrasive wheel which can be provided
with a piece of sandpaper of the present invention are for
illustration only, the patent application is not limited to this
structure.
[0023] As shown in FIG. 1 to FIG. 9, Embodiment 1 of the abrasive
wheel which can be provided with a piece of sandpaper includes a
columnar main body 10 and a tension member 20, wherein the main
body 10 has a mounting end 11 and a driven end 12, the mounting end
11 is opposite to the driven end 12 in the axial direction of the
main body 10. The driven end 12 can directly or indirectly bear the
power-driven source, so that a rotary driving device (not shown in
the figure) actuates the main body 10 to rotate round the central
axis X through the mounting end 11 and the driven end 12 as
center.
[0024] A first surface 13 is formed on the periphery of the main
body 10. The first surface 13 is located between the mounting end
11 and the driven end 12, and the first surface 13 in approximately
circular arc is preferred implementation, so that a piece of
sandpaper 90 is arranged on the first surface 13. When the first
surface 13 is a circular surface, the center of circle of the first
surface 13 is on the central axis X. A first storage chamber 14 and
a second storage chamber 15 are formed inside the main body 10. The
first storage chamber 14 and the second storage chamber 15 extend
from the mounting end 11 into the main body 10 respectively. A
channel 16 is formed on the first surface 13. One end of the
channel 16 extends at the mounting end 11, the other end of the
channel 16 points at the driven end 12. The channel 16 extends into
the main body 10, and the channel 16 communicates with the first
storage chamber 14, the second storage chamber 15 extends on one
side of the channel 16, so that one end of the sandpaper 90 enters
the first storage chamber 14 to form a restricted part 92, the
other end of the sandpaper 90 is located in the second storage
chamber 15. The first storage chamber 14 has a compass
circumferential wall 142.
[0025] The tension member 20 is disposed in the first storage
chamber 14, and can rotate in the first storage chamber 14. The
tension member 20 has a guide slot 21, the guide slot 21 extends
from the periphery of the tension member 20 into the tension member
20, so that the restricted part 92 enters the guide slot 21 through
the channel 16, and the restricted part 92 is guided to adhere to
the circumferential wall 142 as the tension member 20 rotates, and
then the tension member 20 and the circumferential wall 142
oppositely press and localize the restricted part 92, and the
sandpaper 90 is stretched tight and adhering to the first surface
13.
[0026] As shown in FIG. 4 and FIG. 5, when the sandpaper 90 is
arranged in Embodiment 1, the sandpaper 90 is opposite to the first
surface 13, and multiple grinding parts 96 formed of abrasive
particles are laid on the sandpaper 90, facing one side of the
sandpaper 90 far from the first surface 13. When the guide slot 21
is connected to the channel 16, one end of the sandpaper 90 is
wound to form a winding part 94, the winding part 94 is placed in
the second storage chamber 15 through the mounting end 11, so that
the winding part 94 is located in the second storage chamber 15.
The other end of the sandpaper 90 is placed in the guide slot 21 to
form the restricted part 92. The portions of the sandpaper 90 near
the winding end 94 and the restricted part 92 enter the channel 16
respectively. Afterwards, as shown in FIG. 6 and FIG. 7, the
tension member 20 is rotate counterclockwise as shown in FIG. 6,
the tension member 20 has a first slot wall 212 and a second slot
wall 214. The first slot wall 212 and the second slot wall 214 are
located on both sides of the guide slot 21 respectively. The first
slot wall 212 laterally pushes the restricted part 92, so that the
restricted part 92 adheres to the circumferential wall 142, and the
tension member 20 and the circumferential wall 142 press the
restricted part 92 oppositely. As the tension member 20 rotates,
the restricted part 92 is actuated away from the channel 16 along
the circumferential wall 142 gradually under the frictional
traction of the tension member 20, so that the sandpaper 90 is
stretched tight and adhering to the first surface 13. The
arrangement of the sandpaper 90 is completed, it is easy to mount
the sandpaper 90.
[0027] As shown in FIG. 4 to FIG. 6, the winding part 94 is located
in the second storage chamber 15, that is a feasible demonstration
of locating one end of the sandpaper 90 in the second storage
chamber 15, and one end of the sandpaper 90 can be located in the
second storage chamber 15 the second storage chamber 15 in other
forms.
[0028] Embodiment 1 with the sandpaper 90 can be arranged in the
rotary driving device, so that the sandpaper 90 performs grinding
or polishing operation on a workpiece (not shown in the figure). As
the operation proceeds, the sandpaper 90 extends and deforms
gradually, and the tension of the sandpaper 90 decreases gradually,
the sandpaper 90 is further tightened by rotating the tension
member 20, restoring the state of adhering to the first surface 13.
After the sandpaper 90 is arranged, the tension member 20 can be
rotated according to the state of the sandpaper 90 at any time, so
as to restore the tight state of the sandpaper 90. When the
abrasive particles of the grinding part 96 wear or drop off
gradually, the grinding part 96 cannot perform grinding or
polishing operation effectively, the sandpaper 90 can be changed to
enhance the operation benefit of the sandpaper 90.
[0029] As shown in FIG. 2, FIG. 8 and FIG. 9, the tension member 20
has a pushing part 22, so that the pushing part 22 pushes the
restricted part 92 to move towards the channel 16, and then the
sandpaper 90 can be removed. Furthermore, the tension member 20 has
a second surface 23, the second surface 23 is formed on the
periphery of the tension member 20, so that the circumferential
wall 142 and the second surface 23 oppositely press and localize
the restricted part 92. The pushing part 22 is formed at the
conjoiner of the second slot wall 214 and the second surface 23, so
that the pushing part 22 pushes the restricted part 92 to move
towards the channel 16.
[0030] To remove the sandpaper 90 from Embodiment 1, the tension
member 20 is rotated clockwise as shown in FIG. 8, when the guide
slot 21 is opposite to the tail end of the restricted part 92, the
suppression of the tension member 20 on the tail end of the
restricted part 92 is cancelled. As the tension member 20 rotates
continuously, the pushing part 22 can push the restricted part 92
towards the channel 16, and the tight state of the sandpaper 90
adhering to the first surface 13 is cancelled. When the guide slot
21 communicates with the channel 16, the restricted part 92 and the
winding part 94 can be removed from the main body 10 through the
mounting end 11. The removal of the sandpaper 90 is completed, it
is convenient to change the sandpaper 90.
[0031] As shown in FIG. 1 to FIG. 3, the main body 10 can be
provided with a baffle 30 as required. The tension member 20 is
located between the baffle 30 and the driven end 12, the baffle 30
stops the tension member 20, so as to localize the tension member
20 on the main body 10. Furthermore, with the arrangement of the
baffle 30, the mounting end 11 can form a compass flange 112 in
axial direction. The flange 112 is disposed on the periphery of the
baffle 30, hereby, the baffle 30 is embedded in the flange 112 for
localizing the baffle 30.
[0032] Embodiment 1 can include a shaft lever 40 and a bolt 50,
wherein the shaft lever 40 axially contacts the driven end 12, so
that the shaft lever 40 is configured on the rotary driving device,
the rotary driving device can pull the main body 10 to rotate. The
bolt 50 axially penetrates the baffle 30 and the tension member 20
is screwed on the shaft lever 40, so as to localize the baffle 30.
The bolt 50 has a cap 52, the bolt 50 axially penetrates a washer
60, the washer 60 is sandwiched in between the cap 52 and the
baffle 30.
[0033] The baffle 30 penetrates a first punch hole 32 coordinating
with the bolt 50, the tension member 20 penetrates a second punch
hole 24 coordinating with the bolt 50. The bolt 50 axially
penetrates the first punch hole 32 and the second punch hole 24 is
screwed on the shaft lever 40, hereby, the first punch hole 32, the
second punch hole 24 and the bolt 50 can be adapted in radial
dimension, and the first punch hole 32, the second punch hole 24,
the shaft lever 40 and the bolt 50 are coaxially arranged along the
central axis X. Thus, when the bolt 50 axially penetrates the
baffle 30 and the tension member 20 is screwed on the shaft lever
40, the tension member 20 centers inside the first storage chamber
14, so as to further enhance the reliability of the tension member
20 clamping the restricted part 92 with the circumferential wall
142.
[0034] The driven end 12 forms a joint holder 122 in axial
direction, the joint holder 122 forms a polygonal embedding groove
124 in axial direction. The shaft lever 40 is provided with an
insert 42 fitting the embedding groove 124. The insert 42 is
embedded in the embedding groove 124, so that the shaft lever 40 is
axially connected to the driven end 12. The relation between the
shaft lever 40 and the driven end 12 can be replaced by integration
of the shaft lever 40 and the driven end 12 or connection in other
forms.
[0035] The tension member 20 forms an operation hole 25 in axial
direction, so that a hand tool (not shown in the figure) is
embedded in the operation hole 25 to pull the tension member 20 to
rotate, so as to enhance the convenience of operating the tension
member 20 to rotate. The quantity and shape of the operation hole
25 and the positioning of the operation hole 25 can be changed as
required. The figures only show a feasible demonstration, not to
limit the technical means disclosed in Embodiment 1.
[0036] As shown in FIG. 10, the major difference of Embodiment 2
from Embodiment 1 is that the tension member 20 is provided with a
slot 26, the slot 26 extends from the periphery of the tension
member 20 into the tension member 20, the tension member forms a
third slot wall 262 on one side of the slot 26, the periphery of
the tension member 20 forms the second surface 23 and a third
surface 27 between the guide slot 21 and the slot 26, so that the
circumferential wall 142 and the second surface 23 oppositely press
and localize the restricted part 92. The pushing part 22 is formed
at the conjoiner of the third slot wall 262 and the third surface
27.
[0037] To remove the sandpaper 90 from Embodiment 2, the tension
member 20 is rotated clockwise as shown in FIG. 10. When the slot
26 is opposite to the tail end of the restricted part 92, the
suppression of the tension member 20 on the tail end of the
restricted part 92 is cancelled. As the tension member 20 rotates
continuously, the pushing part 22 can push the restricted part 92
towards the channel 16, so as to remove the sandpaper 90.
* * * * *