CN202612598U - Gear shifting fork for gearbox - Google Patents
Gear shifting fork for gearbox Download PDFInfo
- Publication number
- CN202612598U CN202612598U CN 201220241429 CN201220241429U CN202612598U CN 202612598 U CN202612598 U CN 202612598U CN 201220241429 CN201220241429 CN 201220241429 CN 201220241429 U CN201220241429 U CN 201220241429U CN 202612598 U CN202612598 U CN 202612598U
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- CN
- China
- Prior art keywords
- shift fork
- shift
- joint
- shifting fork
- gear
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to the technical field of mechanical transmission, in particular to a gear shifting fork for a gearbox. The gear shifting fork for the gearbox comprises a shifting fork body; one end of the shifting fork body is provided with a shaft connecting part for assembling the shifting fork on a shifting fork shaft; the other end of the shifting fork body is provided with a fork part; the fork part is formed by connecting left and right shifting fork arms with symmetrical structures; left and right clamping jaws clamped into an annular groove of a shifting gear are arranged at the ends of the left and right shifting fork arms; the fork part has a symmetrical semicircular structure; the left and right clamping jaws are vertical short rods extended from the ends of the left and right shifting fork arms; the side wall of each of the left and right clamping jaws is formed by connecting a plane and a sunken arc surface; the sunken arc surfaces are connected with the inner walls of the shifting fork arms; and each of two transverse sides of the opposite ends of the left and right clamping jaws is provided with a notch, so that the cross sections of the left and right clamping jaws are 'convex'. The shifting fork is difficult to deform, is clamped into the shifting gear reliably, and has the advantages of convenience and reliability in gear shifting operation and long service life.
Description
Technical field
The utility model relates to the mechanical transmissioning technology field, is specifically related to a kind of gearbox gear-shift shift fork.
Background technique
Shift fork be mechanical field commonly used stir parts; Through accepting the power that gear shifting handle transmits, the gear that other promotes in the gearbox moves on declutch shift shaft, throws off the meshing relation of original gear pair; Set up new gear pair meshing relation, on required transmission speed ratio gear, move.The shift fork arm of existing shift fork is asymmetrical semicircular structure, the shift fork potential safety hazard that causes out of supply of overturning easily; Structure matching on the shift fork is unreasonable simultaneously, the stressed easy deformation of shift fork, and dislocation, working life is short, influences the normal gear-change operation of gearbox.
Summary of the invention
To the deficiency that existing technology exists, the purpose of the utility model is to provide a kind of structure to be provided with rationally, and gear-change operation is convenient, and the shift fork reasonable stress is not yielding, the gearbox gear-shift shift fork of long service life.
For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of gearbox gear-shift shift fork, include the shift fork body, and shift fork body one end is provided with realizes that shift fork is assemblied in the connecting shaft portion on the declutch shift shaft; The shift fork body the other end is provided with fork portion; Fork portion is connected and composed by the left and right shift fork arm of symmetrical configuration setting, and the end of left and right shift fork arm is provided with the left and right claw that snaps in the change gear circular groove, and described fork portion be symmetrical semicircular structure; The extended vertical quarter butt in the end that said left and right claw is left and right shift fork arm; Left and right claw sidewall in opposite directions is that the plane is connected formation with the indent arc shaped surface, and the indent arc shaped surface is connected with the inwall of shift fork arm, and left and right claw in opposite directions the both lateral sides of an end offer short slot and make left and right claw cross section be " protruding " word shape.
The longitudinal length a on described plane and the diameter ratio of interior concaved circular cambered surface are 0.2 ~ 0.3.
Through adopting technique scheme, fork portion is the semicircular structure of symmetry, shift fork reasonable stress; While sidewall in opposite directions is that indent arc shaped surface and plane are connected formation; The indent arc shaped surface is connected with the inwall of shift fork arm; Promptly outwardly a side is the plane; And the left and right claw both lateral sides of an end is in opposite directions offered short slot and is made left and right claw cross section be " protruding " word shape, is provided with down so left and right claw is reliably snapped in the change gear circular groove, avoids shift fork stressed out of supply; Shift fork gear-change operation safe ready is reliable.
The utility model further is set to: described left jamming claw forms the left side spacing preiection towards a side sidewall and the left shift fork arm joining place of right jamming claw, and right jamming claw forms the right side spacing preiection towards a side sidewall and the right shift fork arm joining place of left jamming claw.
Through adopting technique scheme, the left and right sides spacing preiection plays and claw is inserted in the change gear circular groove degree of depth carries out spacingly, guarantees to snap in correct position, guarantees that shift fork snaps in to break away from the reliable and shift fork reasonable stress of change gear circular groove.
The utility model further is set to: the both lateral sides of described shift fork body is respectively equipped with a flanging makes the cross section of shift fork body be " worker " glyph shape.
Through adopting technique scheme, the cross section of shift fork body is " worker " glyph shape, improves the main stressed both sides mechanical strength of shift fork body, improves the rigidity of shift fork body, makes the shift fork body not yielding, long service life.
The utility model further is set to: described shift fork body comprises first joint that is connected with connecting shaft portion and second joint that is connected with the shift fork arm, and the shift fork body is the connecting lever shape that forms the turning in the joint of first joint and second joint; The described second joint two side is provided with pit, and pit depth accounts for 0.1 ~ 0.2 of wall thickness.
Through adopting technique scheme, on the shift fork body pit is set, and pit under the condition that does not influence the shift fork rigidity, alleviates shift fork weight for adapting to the degree of depth.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the plan view of the utility model specific embodiment gearbox gear-shift shift fork;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is the side view of the utility model specific embodiment gearbox gear-shift shift fork;
Fig. 5 is the C-C sectional view of Fig. 4;
Fig. 6 is the connecting shaft bilge construction schematic representation of the utility model specific embodiment gearbox gear-shift shift fork.
Embodiment
Like Fig. 1-6, the disclosed a kind of gearbox gear-shift shift fork of the utility model includes shift fork body 1, and shift fork body 1 one ends are provided with realizes that shift fork is assemblied in the connecting shaft portion 2 on the declutch shift shaft; Connecting shaft portion 2 comprises pedestal 20; Pedestal 20 is provided with the axis hole 21 that supplies declutch shift shaft to insert; Pedestal 20 tops are provided with the fixed hole 22 vertical with axis hole 21, and declutch shift shaft inserts in the axis hole 21 that fixed block such as inserting bolt or fixing pin is fixed on declutch shift shaft on the pedestal 20 in fixed hole 22.Described shift fork body 1 the other end is provided with fork portion 3, and fork portion 3 is connected and composed by the left and right shift fork arm 30,31 of symmetrical configuration setting, and fork portion 3 is the semicircular structure of symmetry; The end of left and right shift fork arm 30,31 is provided with the left and right claw 300,310 that snaps in the change gear circular groove; The extended vertical quarter butt in end that said left and right claw 300,310 is left and right shift fork arm 30,31; Left and right claw 300,301 sidewall in opposite directions is that plane 4 is connected formation with indent arc shaped surface 5, and the longitudinal length a on described plane 4 and the diameter ratio of interior concaved circular cambered surface 5 are 0.2 ~ 0.3; Indent arc shaped surface 5 is connected with the inwall of shift fork arm; Be that plane 4 is positioned at the end; And left and right claw 300,310 both lateral sides of an end is in opposite directions offered short slot 6 and is made left and right claw 300,310 cross sections be " protruding " word shape, and the inwall joint of short slot 6 is the circular arc setting.Be provided with down like this, fork portion 3 is the semicircular structure of symmetry, shift fork arm reasonable stress; While sidewall in opposite directions is that indent arc shaped surface 5 is connected formation with plane 4; Indent arc shaped surface 5 is connected with the inwall of shift fork arm; Promptly outwardly a side is plane 4; And left and right claw 300,310 both lateral sides of an end is in opposite directions offered short slot 6 and is made left and right claw 300,310 cross sections be " protruding " word shape, is provided with down so left and right claw 300,310 is reliably snapped in the change gear circular groove, avoids shift fork stressed out of supply; Be that shift fork gear-change operation safe ready is reliable.
For further making the shift fork gear-change operation light; Described shift fork body 1 comprises first joint 10 that is connected with connecting shaft portion 2 and second joint 11 that is connected with fork portion 3, and shift fork body 1 is the connecting lever shape that forms the turning in the joint of first joint 10 and second joint 11; Described second joint 11 two sides are provided with pit 110, and pit 110 degree of depth account for 0.1 ~ 0.2 of wall thickness; Be provided with down like this, the shift fork body is connecting lever shape, the shift fork rapid operation, and gear shift is light, and the pit setting of the simultaneous adaptation degree of depth under the condition that does not influence the shift fork rigidity, alleviates shift fork weight, makes gear-change operation flexible.
For improving the rigidity of shift fork, the both lateral sides of described shift fork body 1 is respectively equipped with a flanging 7 makes the cross section of shift fork body 1 be " worker " glyph shape.Be provided with down like this, the cross section of shift fork body 1 is " worker " glyph shape, improves shift fork body 1 main stressed both sides mechanical strength, improves the rigidity of shift fork body 1, makes shift fork body 1 not yielding, the shift fork long service life.In this specific embodiment; Described left jamming claw 300 forms left side spacing preiection 3000 towards a side sidewall and left shift fork arm 30 joining places of right jamming claw 310, and right jamming claw 310 forms right side spacing preiection 3100 towards a side sidewall and right shift fork arm 31 joining places of left jamming claw 300; Left and right sides spacing preiection 3000,3100 is connected with the inwall cambered surface of shift fork arm by the inner concave arc surface of left and right claw 300,310 and forms.Left and right sides spacing preiection 3000,3100 plays and claw is inserted in the change gear circular groove degree of depth carries out spacingly, guarantees to snap in correct position, guarantees that shift fork is difficult for breaking away from change gear circular groove and shift fork reasonable stress.
Claims (6)
1. gearbox gear-shift shift fork; Include the shift fork body; Shift fork body one end is provided with realizes that shift fork is assemblied in the connecting shaft portion on the declutch shift shaft, and the shift fork body the other end is provided with fork portion, and fork portion is connected and composed by the left and right shift fork arm of symmetrical configuration setting; The end of left and right shift fork arm is provided with the left and right claw that snaps in the change gear circular groove; It is characterized in that: described fork portion is the semicircular structure of symmetry, and the extended vertical quarter butt in the end that said left and right claw is left and right shift fork arm, left and right claw sidewall in opposite directions are that the plane is connected formation with the indent arc shaped surface; The indent arc shaped surface is connected with the inwall of shift fork arm, and left and right claw in opposite directions the both lateral sides of an end offer short slot and make left and right claw cross section be " protruding " word shape.
2. gearbox gear-shift shift fork according to claim 1; It is characterized in that: described left jamming claw forms the left side spacing preiection towards a side sidewall and the left shift fork arm joining place of right jamming claw, and right jamming claw forms the right side spacing preiection towards a side sidewall and the right shift fork arm joining place of left jamming claw.
3. gearbox gear-shift shift fork according to claim 1 and 2 is characterized in that: the both lateral sides of described shift fork body is respectively equipped with a flanging makes the cross section of shift fork body be " worker " glyph shape.
4. gearbox gear-shift shift fork according to claim 1 and 2; It is characterized in that: described shift fork body comprises first joint that is connected with connecting shaft portion and second joint that is connected with the shift fork arm, and the shift fork body is the connecting lever shape that forms the turning in the joint of first joint and second joint; The described second joint two side is provided with pit, and pit depth accounts for 0.1 ~ 0.2 of wall thickness.
5. gearbox gear-shift shift fork according to claim 3; It is characterized in that: described shift fork body comprises first joint that is connected with connecting shaft portion and second joint that is connected with the shift fork arm, and the shift fork body is the connecting lever shape that forms the turning in the joint of first joint and second joint; The described second joint two side is provided with pit, and pit depth accounts for 0.1 ~ 0.2 of wall thickness.
6. gearbox gear-shift shift fork according to claim 1 is characterized in that: the longitudinal length a on said plane and the diameter ratio of interior concaved circular cambered surface are 0.2 ~ 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241429 CN202612598U (en) | 2012-05-22 | 2012-05-22 | Gear shifting fork for gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241429 CN202612598U (en) | 2012-05-22 | 2012-05-22 | Gear shifting fork for gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612598U true CN202612598U (en) | 2012-12-19 |
Family
ID=47346299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220241429 Expired - Fee Related CN202612598U (en) | 2012-05-22 | 2012-05-22 | Gear shifting fork for gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612598U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277508A (en) * | 2013-06-07 | 2013-09-04 | 苏州柏德纳科技有限公司 | Shifting fork arm |
| CN103851184A (en) * | 2014-03-28 | 2014-06-11 | 浙江龙虎锻造有限公司 | Shifting fork |
| CN104373592A (en) * | 2014-10-10 | 2015-02-25 | 中山市鸿程科研技术服务有限公司 | Transmission shifting fork |
| CN106286820A (en) * | 2015-05-29 | 2017-01-04 | 昌利锻造有限公司 | A kind of automotive reverse gear shift fork |
-
2012
- 2012-05-22 CN CN 201220241429 patent/CN202612598U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277508A (en) * | 2013-06-07 | 2013-09-04 | 苏州柏德纳科技有限公司 | Shifting fork arm |
| CN103851184A (en) * | 2014-03-28 | 2014-06-11 | 浙江龙虎锻造有限公司 | Shifting fork |
| CN104373592A (en) * | 2014-10-10 | 2015-02-25 | 中山市鸿程科研技术服务有限公司 | Transmission shifting fork |
| CN106286820A (en) * | 2015-05-29 | 2017-01-04 | 昌利锻造有限公司 | A kind of automotive reverse gear shift fork |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20180522 |