CN106553147B - Reversing device for ratchet wrench - Google Patents
Reversing device for ratchet wrench Download PDFInfo
- Publication number
- CN106553147B CN106553147B CN201510625833.1A CN201510625833A CN106553147B CN 106553147 B CN106553147 B CN 106553147B CN 201510625833 A CN201510625833 A CN 201510625833A CN 106553147 B CN106553147 B CN 106553147B
- Authority
- CN
- China
- Prior art keywords
- pushing
- tug
- ratchet
- clipping block
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
- B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A kind of reversing device for ratchet wrench a, including ratchet, first clip unit, second clip unit and a switch unit.There are one brake and a shifting parts for switch unit tool, it operates the switch unit and first pushing and pressing part of the brake is made to support one first that terminates in first clip unit by tug face, by first extension line of a second axis and first pushing and pressing part first 90 degree are substantially with this by the angle that tug face is intersected, it operates the switch unit and second pushing and pressing part of the brake is made to support one second that terminates in second clip unit by tug face, by second extension line of second axis and second pushing and pressing part second 90 degree are substantially with this by the angle that tug face is intersected, it can ensure that first clip unit or second clip unit have preferable snap-in force, operation torsion is not lost in.
Description
Technical field
The present invention relates to a kind of hand-held tools, more particularly to a kind of reversing device for ratchet wrench.
Background technology
Existing a kind of reversing device for ratchet wrench (TaiWan, China certificate number M490942 Patent Cases), including one
Ratchet, a switch piece, and it is located at the left side of the switch piece and a left brake block on right side and a right brake block.It should
Switch piece includes a cam bit being set between the left brake block, right brake block and a coaxial and linking in the cam
The toggle switch at block rear.The cam bit is fixed with the two pushing and pressing faces and two for corresponding to the left brake block, right brake block respectively
Plane.Whereby, the toggle switch can one it is clockwise and one reverse position between swing, at the clockwise position, this is stirred
Switch is rocked to left side, which is pushed against by the pushing and pressing face of correspondence far from the ratchet, which is then connected to the positioning
It is simultaneously engaged with the ratchet in face so that the ratchet can be rotated uniaxially clockwise, then opposite at the reverse position.
Although above-mentioned reversing device for ratchet wrench, which can reach expected, operates purpose, because the toggle switch stopper should
Left brake block, right brake block are by the pushing and pressing of the pushing and pressing face of correspondence and when the separate ratchet, between the pushing and pressing face and the positioning surface
Angle is too small, and can influence torsion transmission, for example, the toggle switch is more bad to the stopping effect of the left brake block, the left tug
Motion block by elastic component elastic force act on, it is easy to the toggle switch generation push away tug effect, and can influence the right brake block with
The snap-in force of the ratchet, and operation torsion is caused to be lost in.
In addition, the positioning surface of the right brake block being engaged with the ratchet and the switch piece of the toggle switch is in smooth, when the left side
Brake block by elastic component elastic force act on, and to the toggle switch generation push away tug effect when, can also influence the right brake block with
The snap-in force of the ratchet.
Invention content
It can make that there is between component preferable relative positioning the purpose of the present invention is to provide a kind of and can ensure that torsion
The reversing device for ratchet wrench not being lost in.
Reversing device for ratchet wrench of the present invention, suitable for being installed in an ontology, which includes ratchet, one
A first clip unit, second clip unit and a switch unit, the ratchet extend along a first axle, can pivot
And it is set to the ontology, and include that a ratchet part for being installed on the body interior and one are set to the spine along the first axle
Teeth portion side and the driving portion for convexedly stretching in the body exterior, there are one the first cards for being hubbed at the ontology for first clip unit tool
Tug block and butted first elastic component between the ontology and first clipping block, there are one pivot joints for first clipping block tool
In the ontology first pivoting portion, one in contrast to the first pivoting portion and the first blocking part and one that can be engaged with the ratchet part
A first be set between the first pivoting portion and first blocking part is by tug face, and there are one be pivoted second clip unit tool
In butted the second elastic component between the ontology and second clipping block of the second clipping block of the ontology and one, second card
Tug block tool there are one be articulated in the second pivoting portion of the ontology, one can engage in contrast to the second pivoting portion and with the ratchet part
The second blocking part and one be set between the second pivoting portion and second blocking part and first opposite by tug face with this
Second by tug face, which extends along a second axis for being parallel to the first axle and be located in the ontology, and has
It is connected to the brake there are one the brake being set between first clipping block and second clipping block and one and energy is convex
The shifting part for stretching in the body exterior, the first blocking part and second clipping block of first clipping block can be made by operating the shifting part
The second blocking part can alternatively be engaged with the ratchet part, the brake tool there are one be located at the second axis side and relative to
First positioning surface of first clipping block, one be set to the first pushing and pressing part of the first positioning surface side, one be located at this
The two axis other sides and it is set to the second of the second positioning surface side relative to the second positioning surface of second clipping block, one
Pushing and pressing part, operate the switch unit and make first positioning surface be away from this first by tug face when, first pushing and pressing part support terminate in
The first of first clipping block by tug face, and second positioning surface with this second by tug face it is opposite and tool there are one gap, pass through
One first extension line of the second axis and first pushing and pressing part first is substantially 90 degree with this by the angle that tug face is intersected, operation
The switch unit and make second positioning surface be away from this second by tug face when, second pushing and pressing part support terminate in second clipping block
Second by tug face, and first positioning surface with this first by tug face is opposite and tool there are one gap, by the second axis and
One second extension line of second pushing and pressing part first is substantially 90 degree with this by the angle that tug face is intersected.
Reversing device for ratchet wrench of the present invention, first clip unit first by tug mask there are one the first embedding part,
First pushing and pressing part of the switch unit and first embedding part in it is concave-convex complementary and can mutual inlay card, the of second clip unit
Two by tug mask there are one the second embedding part, the second pushing and pressing part of the switch unit is with second embedding part in concave-convex complementary and energy
Mutual inlay card.
Reversing device for ratchet wrench of the present invention, first clip unit first by tug face the first embedding part in circular arc it is recessed
Poroid, the second of second clip unit is pushed against by second embedding part in tug face in circular arc shrinkage pool shape, the first of the switch unit
Portion is in circular arc convex block shape with second pushing and pressing part.
The brake of reversing device for ratchet wrench of the present invention, the switch unit is in perpendicular to the cross sectional shape of the second axis
Sector, and first positioning surface is disposed adjacent with second positioning surface, the folder between first positioning surface and second positioning surface
Angle levels off to 90 degree.
Reversing device for ratchet wrench of the present invention, the brake of the switch unit also have there are one between first pushing and pressing part with
Between second pushing and pressing part and in the interface of protrusion arc surfaced, the interface is around the second axis in proper circle arc and non-bulging
In first pushing and pressing part and second pushing and pressing part.
The beneficial effects of the present invention are：Using by the second axis and first pushing and pressing part the first extension line with should
First is substantially 90 degree by the angle of tug face intersection acts on, and prolongs by the second of the second axis and second pushing and pressing part
It stretches line first to be substantially 90 degree with this by the angle that tug face is intersected and acted on, can ensure that the first clipping block for being pushed away tug by the brake
Or second clipping block can keep preferable polarization, and it is second opposite and between this by tug face with this using second positioning surface
Gap, first positioning surface are first opposite and have the gap effect by tug face with this, then can ensure that first clipping block or the
The snap-in force of two clipping blocks and the ratchet, and operation torsion is made not to be lost in.
Description of the drawings
Fig. 1 is a stereogram exploded view of one first embodiment of reversing device for ratchet wrench of the present invention；
Fig. 2 is a flat assembly drawing of the first embodiment, illustrates that a switch unit is located at position and one in one
First clipping block and second clipping block are far from a ratchet；
Fig. 3 is an operation chart of the first embodiment, illustrates that the switch unit stopper first clipping block is separate
The ratchet, and second clipping block is made to be engaged in the ratchet；
Fig. 4 is a switching schematic diagram of the first embodiment, illustrates that operation switch unit stopper second clipping block is remote
From the ratchet, and first clipping block is made to be engaged in the ratchet；
Fig. 5 is a flat assembly drawing of one second embodiment of reversing device for ratchet wrench of the present invention, illustrates that one is cut
Unit is changed positioned at position and first clipping block in one and second clipping block far from a ratchet；
Fig. 6 is an operation chart of the second embodiment, illustrates that the switch unit stopper first clipping block is separate
The ratchet, and second clipping block is made to be engaged in the ratchet；
Fig. 7 is a switching schematic diagram of the second embodiment, illustrates that operation switch unit stopper second clipping block is remote
From the ratchet, and first clipping block is made to be engaged in the ratchet.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and embodiments.
Refering to fig. 1 with Fig. 2, a first embodiment of reversing device for ratchet wrench of the present invention, suitable for being installed in one
There is 110, one, head, first tank for being set to the head 110 120, one to be set to the head for ontology 100, the ontology 100
Portion 110 and the second tank 130, one being connected with first tank 120 are fixed on the head 110 and can close first appearance
Slot 120 and the cover board 140 and a shank 150 for being connected to the head 110, second tank 130 of second tank 130 have
One the first pivot hole 160 and second pivot hole 170.The reversing arrangement include 10, first clip units 20 of a ratchet,
One the second clip unit 30 and a switch unit 40.
The ratchet 10 extends along a first axle L1, and can pivot and be set to the ontology 100, and includes an installation
Ratchet part 11 inside first tank 120 and one are set to 11 side of ratchet part along first axle L1 and convexedly stretch in
Driving portion 12 outside the ontology 100, the driving portion 12 can be used to be socketed sleeve (not shown), and can be used to operate screw or spiral shell
Cap.
There are one the first clipping block 21 and one that are hubbed at the ontology 100 are butted in this for first clip unit 20 tool
The first elastic component 22 between body 100 and first clipping block 21, there are one be articulated in first pivot to first clipping block 21 tool
The first pivoting portion 211, one in hole 160 is in contrast to the first pivoting portion 211 and the first clip that can be engaged with the ratchet part 11
Portion 212 and first be set between the first pivoting portion 211 and first blocking part 212 are by tug face 213, first card
Tug portion 212 is serrated.
There are one the second clipping block 31 and one that are hubbed at the ontology 100 are butted in this for second clip unit 30 tool
The second elastic component 32 between body 100 and second clipping block 31, there are one be articulated in second pivot to second clipping block 31 tool
The second pivoting portion 311, one in hole 170 is in contrast to the second pivoting portion 311 and the second clip that can be engaged with the ratchet part 11
Portion 312 and one are set between the second pivoting portion 311 and second blocking part 312 and first opposite by tug face 213 with this
Second by tug face 313, which is serrated.
The second axis L2 that the switch unit 40 is parallel to first axle L1 along one extends and is located in the ontology 100
The second tank 130 in, and have that there are one be set to brake 41 between first clipping block 21 and second clipping block 31
And one be connected to 41 side of brake along second axis L2 and can convexedly stretch in the shifting part 42 outside the ontology 100.
The brake 41 is set to second tank 130, and perpendicular to the cross sectional shape of second axis L2 in sector, should
There are one be located at the sides second axis L2 and the first positioning surface 411, one relative to first clipping block 21 for the tool of brake 41
A the first pushing and pressing part for being set to 411 side of the first positioning surface 412, one be located at the other sides second axis L2 and relative to
The second positioning surface 413, one of second clipping block 31 be set to 413 side of the second positioning surface the second pushing and pressing part 414 and
One between first pushing and pressing part 412 and second pushing and pressing part 414 and in the interface 415 of protrusion arc surfaced.This first
Positioning surface 411 is disposed adjacent with second positioning surface 413, and the folder between first positioning surface 411 and second positioning surface 413
Angle levels off to 90 degree, the interface 415 around second axis L2 in proper circle arc and it is non-bulging in first pushing and pressing part 412 with should
Second pushing and pressing part 414, in the present embodiment, the smooth linking of the interface 415 is in first pushing and pressing part 412 and second pushing and pressing part
Between 414.
Again as shown in Fig. 2, showing that the switch unit 40 is located at position in one, first clipping block 21 and second clipping block
31 far from the ratchet 10, if at this point, operating the shank 150 of the ontology 100, which generates relative to the ratchet 10
Idle running.
Again as shown in figure 3, rotating in an anti-clockwise direction (as shown by arrows) toward Fig. 2 when operating the shifting part 42, the stopper
When first positioning surface 411 of part 41 is away from the first of first clipping block 21 by tug face 213, which supports only
In this first by tug face 213, and by second axis L2 and one article of first extension line L3 of first pushing and pressing part 412 and this
One by the angle that tug face 213 is intersected be substantially 90 degree (because manufacture assembles and may will produce tolerance, the first extension line L3 with should
First by tug face 213 intersect angle may also have nearmis, so claim the first extension line L3 with this first by tug face 213
The angle of intersection is substantially 90 degree), and first elastic component 22 is in by compression shape to contain the elastic force for having back and releasing, and this second is determined
The second of plane 413 and second clipping block 31 is opposite and have that there are one gaps 1 by tug face 313.At this point, second clipping block 31
It is acted on by the elastic force of second elastic component 32, the second blocking part 312 can be made to be engaged in the ratchet part 11, and operator pulls this
Toward Fig. 3 when rotating counterclockwise, can link shank 150 ratchet 10 rotation, and can achieve the purpose that operate screw or nut.
Again as shown in figure 4, when operating the shifting part 42 toward (as shown by arrows) rotationally clockwise of Fig. 2, the stopper
When second positioning surface 413 of part 41 is away from the second of second clipping block 31 by tug face 313, which supports only
In this second by tug face 313, and by second axis L2 and one article of second extension line L4 of second pushing and pressing part 414 and this
Two by the angle that tug face 313 is intersected be substantially 90 degree (because manufacture assembles and may will produce tolerance, the second extension line L4 with should
Second by tug face 313 intersect angle may also have nearmis, so claim the second extension line L4 with this second by tug face 313
The angle of intersection is substantially 90 degree), and second elastic component 32 is in by compression shape to contain the elastic force for having back and releasing, and this first is determined
The first of plane 411 and first clipping block 21 is opposite and have that there are one gaps 1 by tug face 213.At this point, first clipping block 21
It is acted on by the elastic force of first elastic component 22, the first blocking part 212 can be made to be engaged in the ratchet part 11, and operator pulls this
Toward Fig. 4 when rotating clockwise, can link shank 150 ratchet 10 rotation, and can achieve the purpose that operate screw or nut.
Therefore, reversing arrangement of the invention is using the switch unit 40 is operated, and can make the of first clipping block 21
Second blocking part 312 of one blocking part 212 or second clipping block 31 can select one and be engaged with the ratchet part 11, and reach commutation behaviour
Make the purpose of screw or nut.And using first pushing and pressing part 412 support terminate in this first by tug face 213 when, pass through second axis
Line L2 and the first extension line L3 of first pushing and pressing part 412 first is substantially 90 degree with this by the angle that tug face 213 is intersected, and
Second pushing and pressing part 414, which is supported, terminates in this second by tug face 313, and pass through second axis L2 and second pushing and pressing part 414 the
Two extension line L4 second are substantially 90 degree by the angle that tug face 313 is intersected and acted on this, it can be ensured that are pushed away by the brake 41
The first clipping block 21 or the second clipping block 31 of tug can keep preferable polarization, and utilization second positioning surface 413 and this
Two by tug face 313 it is opposite and with the gap 1, first positioning surface 411 with this first by tug face 213 relatively and with the gap
1 effect, then can ensure that the snap-in force of first clipping block 21 or the second clipping block 31 and the ratchet 10, and make operation torsion not
It is lost in, preferable operating effect can be reached.
Referring again to Fig. 5, a second embodiment of reversing device for ratchet wrench of the present invention also includes a ratchet 10, one
A first clip unit 20 ', second clip unit 30 ' and a switch unit 40 '.And with the difference of the first embodiment
Be in：There are one the first embedding part 214 ', first embedding parts by tug face 213 ' tool for the first of first clip unit 20 '
214 ' be in circular arc shrinkage pool shape.The second of second clip unit 30 ' is by tug face 313 ' tool there are one the second embedding part 314 ', this
Two embedding parts 314 ' are in circular arc shrinkage pool shape.First pushing and pressing part 412 ' of the switch unit is in circular arc convex block shape, and first embedding with this
Card division 214 ' in it is concave-convex complementary and can mutual inlay card, which is in circular arc convex block shape, and with second embedding part
314 ' in the concave-convex complementary and mutual inlay card of energy.
Again as shown in FIG. 6 and 7, when operating the shifting part 42 ' toward when rotating clockwise or counterclockwise, using this
One pushing and pressing part 412 ' and 214 ' the mutual inlay card of the first embedding part or second pushing and pressing part 414 ' and second embedding part 314 '
The effect of mutual inlay card can ensure that and push away the first clipping block 21 ' of tug by the brake 41 ' or the second clipping block 31 ' can be relative to
The ratchet 10 keeps preferable snap-in force.
Claims (4)
1. a kind of reversing device for ratchet wrench, suitable for being installed in an ontology, the reversing arrangement include a ratchet, one the
One clip unit, second clip unit and a switch unit, the reversing device for ratchet wrench are characterized in that：
The ratchet extends along a first axle, can pivot and be set to the ontology, and include one and be installed on the body interior
Ratchet part and one be set to the ratchet part side along the first axle and convexedly stretch in the driving portion of the body exterior；
First clip unit, tool there are one be hubbed at the ontology the first clipping block and one it is butted in the ontology and this first
The first elastic component between clipping block, first clipping block tool there are one be articulated in the ontology first pivoting portion, one it is opposite
In the first pivoting portion and the first blocking part that can be engaged with the ratchet part and one be set to the first pivoting portion with this first
Between blocking part first by tug face, this first by tug mask there are one the first embedding part；
Second clip unit, tool there are one be hubbed at the ontology the second clipping block and one it is butted in the ontology and this second
The second elastic component between clipping block, second clipping block tool there are one be articulated in the ontology second pivoting portion, one it is opposite
In the second pivoting portion and the second blocking part that can be engaged with the ratchet part and one be set to the second pivoting portion with this second
Between blocking part and with this first by tug face it is opposite second by tug face, this second by tug mask there are one the second embedding part；
The switch unit extends along a second axis for being parallel to the first axle and is located in the ontology, and there are one tools
The brake being set between first clipping block and second clipping block and one are connected to the brake and can convexedly stretch in this
The shifting part of body exterior, the first blocking part and the second of second clipping block of first clipping block can be made by operating the shifting part
Blocking part can be engaged alternatively with the ratchet part, the brake tool there are one be located at the second axis side and relative to this first
First positioning surface of clipping block, one be set to the first pushing and pressing part of the first positioning surface side, one be located at the second axis
The other side and the second pushing and pressing that the second positioning surface side is set to relative to the second positioning surface of second clipping block, one
Portion, first pushing and pressing part is with first embedding part in concave-convex complementary and the mutual inlay card of energy, second pushing and pressing part and second inlay card
Portion in it is concave-convex complementary and can mutual inlay card, operate the switch unit and make first positioning surface be away from this first by tug face when,
First pushing and pressing part, which is supported, terminates in the first of first clipping block by tug face, and second positioning surface is second opposite simultaneously by the face of tug with this
There are one gaps for tool, pass through one first extension line of the second axis and first pushing and pressing part and first angle intersected by tug face
Degree substantially 90 degree, operate the switch unit and make second positioning surface be away from this second by pull face when, second pushing and pressing part
To terminating in the second of second clipping block by tug face, and first positioning surface with this first by tug face it is opposite and there are one having between
Gap first is substantially 90 with this by one second extension line of the second axis and second pushing and pressing part by the angle that tug face is intersected
Degree.
2. reversing device for ratchet wrench according to claim 1, it is characterised in that：The first of first clip unit is pulled
First embedding part in face be in circular arc shrinkage pool shape, second clip unit second by tug face the second embedding part be in circular arc shrinkage pool
Shape, the first pushing and pressing part of the switch unit are in circular arc convex block shape with second pushing and pressing part.
3. the reversing device for ratchet wrench according to claim 1 or claim 2, it is characterised in that：The switch unit
Brake is in sector perpendicular to the cross sectional shape of the second axis, and first positioning surface is disposed adjacent with second positioning surface,
Angle between first positioning surface and second positioning surface levels off to 90 degree.
4. reversing device for ratchet wrench according to claim 3, it is characterised in that：The brake of the switch unit also has
One between first pushing and pressing part and second pushing and pressing part and in the interface of protrusion arc surfaced, the interface around this
Two axis are in proper circle arc and non-bulging in first pushing and pressing part and second pushing and pressing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625833.1A CN106553147B (en) | 2015-09-28 | 2015-09-28 | Reversing device for ratchet wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625833.1A CN106553147B (en) | 2015-09-28 | 2015-09-28 | Reversing device for ratchet wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106553147A CN106553147A (en) | 2017-04-05 |
| CN106553147B true CN106553147B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510625833.1A Active CN106553147B (en) | 2015-09-28 | 2015-09-28 | Reversing device for ratchet wrench |
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| CN (1) | CN106553147B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI708660B (en) * | 2019-08-29 | 2020-11-01 | 特典工具股份有限公司 | Ratchet wrench |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205033128U (en) * | 2015-09-28 | 2016-02-17 | 豪越股份有限公司 | Ratchet wrench reversing device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2339358Y (en) * | 1998-10-13 | 1999-09-22 | 利益得股份有限公司 | Reversing device for ratchet wrench |
| TWM246110U (en) * | 2003-10-27 | 2004-10-11 | Wan-Chuan Li | Structure of detent block of ratchet wrench |
| TW201000269A (en) * | 2008-06-27 | 2010-01-01 | Hou-Fei Hu | Three-way type button wrench |
| CN202029072U (en) * | 2011-01-30 | 2011-11-09 | 陈怡富 | Hand tool with inner bushing |
| TWM454902U (en) * | 2013-02-07 | 2013-06-11 | John Metal Tools Ind Ltd | Commutator ratchet wrench |
| US20140318325A1 (en) * | 2013-04-24 | 2014-10-30 | Cheng-Kun Chen | Structure of a ratchet wrench |
| CN203622290U (en) * | 2013-12-10 | 2014-06-04 | 林晁永 | Ratchet wrench |
| CN104742057B (en) * | 2013-12-31 | 2016-09-28 | 陈怡富 | The Wrench improved |
| CN203973450U (en) * | 2014-08-04 | 2014-12-03 | 豪越股份有限公司 | Reversing device for ratchet wrench |
-
2015
- 2015-09-28 CN CN201510625833.1A patent/CN106553147B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205033128U (en) * | 2015-09-28 | 2016-02-17 | 豪越股份有限公司 | Ratchet wrench reversing device |
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| CN106553147A (en) | 2017-04-05 |
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