CN204164212U - Synchronizer pull-fork assembly - Google Patents
Synchronizer pull-fork assembly Download PDFInfo
- Publication number
- CN204164212U CN204164212U CN201420631840.3U CN201420631840U CN204164212U CN 204164212 U CN204164212 U CN 204164212U CN 201420631840 U CN201420631840 U CN 201420631840U CN 204164212 U CN204164212 U CN 204164212U
- Authority
- CN
- China
- Prior art keywords
- shifting block
- sliding sleeve
- synchronizer
- pull
- shift fork
- 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
Links
Landscapes
- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model discloses a kind of synchronizer pull-fork assembly, comprise sliding sleeve and the shift fork for driving sliding sleeve to reciprocatingly slide vertically, the shift fork arm that shift fork comprises declutch shift shaft and coordinates with described declutch shift shaft transmission, described shift fork arm is connected with shifting block by spherical hinge, described sliding sleeve outer side wall is provided with the groove coordinated with shifting block, synchronizer shift fork of the present utility model can be avoided forming point cantact and excessive wear problem between shifting block and sliding sleeve groove, improves shifting block stressed, improves shifting block working life.
Description
Technical field
The utility model relates to synchronizer Effector field, specifically a kind of synchronizer pull-fork assembly.
Background technique
Synchronizer is a kind of important component in the transmission devices such as speed changer, and pull-fork assembly is a kind of common synchronizer Effector, the shifting block that pull-fork assembly generally includes declutch shift shaft, shift fork and is fixed on shift fork, declutch shift shaft rotarily drives shift fork and rotates, shift fork drives the sliding sleeve of synchronizer to move left and right by shifting block, make left and right gear asynchronous with the spline joint on input shaft, realize transmission of power.Shifting block is generally cylindric and is embedded in the groove on sliding sleeve surface, when setting axis ahead and being parallel with groove side, shifting block and groove generation linear contact lay, but current block-dialing structure in use can because of assembling and machining error, make the side of slide block and sliding sleeve side not parallel, and form point cantact, forming stress concentrates, and after Long-Time Service, shifting block surface squeeze and destroy can occur, reduce the manipulation precision of pull-fork assembly, finally even occur that synchronizer cannot stir the phenomenon put in place.On the other hand, existing shifting block is fixedly installed on shift fork, slides over when rotating with input shaft, can produce and rub, cause shifting block excessive wear, reduce its working life with shifting block.
Therefore, for overcoming the above problems, needing one can avoid between shifting block and sliding sleeve groove, forming point cantact and excessive wear problem, improving the synchronizer pull-fork assembly in shifting block working life.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, provides one can avoid forming point cantact and excessive wear problem between shifting block and sliding sleeve groove, improves the synchronizer pull-fork assembly in shifting block working life.
Synchronizer pull-fork assembly of the present utility model, comprise sliding sleeve and the shift fork for driving sliding sleeve to reciprocatingly slide vertically, the shift fork arm that shift fork comprises declutch shift shaft and coordinates with described declutch shift shaft transmission, described shift fork arm is connected with shifting block by spherical hinge, and described sliding sleeve outer side wall is provided with and sets the groove coordinated ahead;
Further, described shifting block is provided with center hole, shift fork arm is fixed with shifting block rotating shaft, is provided with joint shaft bearing and shifting block rotating shaft is rotatably assorted by this joint shaft bearing and shifting block center hole between described shifting block rotating shaft and shifting block;
Further, described shift fork arm comprises the principal arm be fixedly connected with declutch shift shaft and two points of arms being fixed on principal arm upper end, and two points of arms are equipped with shifting block;
Further, the axis of described declutch shift shaft is arranged with sliding sleeve axis is mutually vertical;
Further, described center hole comprises the load segment identical with joint shaft bearing external diameter and for axially carrying out spacing spacing section to joint shaft bearing;
Further, described shifting block rotating shaft is fixed with for axially carrying out spacing snap ring to joint shaft bearing.
The beneficial effects of the utility model are: synchronizer pull-fork assembly of the present utility model, shifting block is connected by spherical hinge with shift fork arm, when shifting block contacts with sliding sleeve groove surfaces appearance point, shifting block will relatively rotate relative to shift fork arm, ensure shifting block shaft axis and sliding sleeve groove surfaces keeping parallelism, form linear contact lay or face contact, reduce extrusion stress, on the other hand, slide over in axis of rotation process, shifting block together can rotate with sliding sleeve, ensure point of contact geo-stationary, avoid shifting block and sliding sleeve generation sliding friction, and then reduce the wearing and tearing of shifting block, improve its working life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at I place in Fig. 2.
Embodiment
Fig. 1 is structural representation of the present utility model, and Fig. 2 is the sectional view at A place in Fig. 1, Fig. 3 is the partial enlarged drawing at B place in Fig. 2, as shown in the figure, synchronizer pull-fork assembly in the present embodiment, comprise sliding sleeve 3 and the shift fork for driving sliding sleeve 3 to reciprocatingly slide vertically, the shift fork arm that shift fork comprises declutch shift shaft 6 and coordinates with the transmission of described declutch shift shaft 6, described shift fork arm is connected with shifting block 2 by spherical hinge, in the present embodiment, shifting block 2 can be cylindrical shape, described sliding sleeve 3 outer side wall is provided with and sets the groove coordinated ahead, sliding sleeve 3 fixed cover is located at outside synchronizer, synchronizer is sheathed on transmission shaft 1, shifting block 2 is connected by spherical hinge with shift fork arm, when shifting block 2 contacts with sliding sleeve 3 groove surfaces appearance point, shifting block 2 will relatively rotate relative to shift fork arm, ensure shifting block rotating shaft 7 line and sliding sleeve 3 groove surfaces keeping parallelism, form linear contact lay or face contact, reduce extrusion stress, on the other hand, sliding sleeve 3 is with in axis of rotation process, shifting block 2 together can rotate with sliding sleeve 3, ensure point of contact geo-stationary, avoid shifting block 2 and sliding sleeve 3 that sliding friction occurs, and then reduce the wearing and tearing of shifting block 2, improve its working life.
In the present embodiment, described shifting block 2 is provided with center hole 10, shift fork arm is fixed with shifting block rotating shaft 7, joint shaft bearing 8 is provided with and shifting block rotating shaft 7 is rotatably assorted by this joint shaft bearing 8 and shifting block 2 center hole 10 between described shifting block rotating shaft 7 and shifting block 2, the sliding bearing that joint shaft bearing 8 mainly has the inner ring of outer spherical surface and one to have the outer ring special construction of inner ball surface by one, joint shaft bearing 8 can allow shifting block rotating shaft 7, relative to center hole 10, the swing of certain limit occurs, when shifting block 2 contacts with sliding sleeve 3 origination point, ensure that shifting block 2 swing can occur and makes shifting block rotating shaft 7 line and sliding sleeve 3 groove surfaces keeping parallelism, and then change linear contact lay or face contact into, in addition, when sliding sleeve 3 rotates, shifting block 2 together can rotate with sliding sleeve 3, reduce the wear extent of shifting block 2.
In the present embodiment, described shift fork arm comprises the principal arm 5 be fixedly connected with declutch shift shaft 6 and two points of arms 4 being fixed on principal arm 5 upper end, two points of arms 4 are equipped with shifting block 2, two points of arms 4 are respectively in the radial both sides of sliding sleeve 3, ensure that shift fork is when stirring sliding sleeve 3, sliding sleeve 3 is stressed comparatively to be balanced, and improves the reliability that sliding sleeve 3 slides.
In the present embodiment, the axis of described declutch shift shaft 6 is arranged with sliding sleeve 3 axis is mutually vertical, by rotating declutch shift shaft 6, makes shifting block 2 rotate around declutch shift shaft 6 axis thus drive sliding sleeve 3 along its axial sliding movement.
In the present embodiment, described center hole 10 comprises the load segment 12 identical with joint shaft bearing 8 external diameter and for axially carrying out spacing spacing section 11 to joint shaft bearing 8, certain joint shaft bearing 8 can interference fit and center hole 10, enable joint shaft bearing 8 outer ring with shifting block 2 synchronous axial system, the aperture of spacing section 11 is less than the external diameter of joint shaft bearing 8, makes it axially carry out spacing to joint shaft bearing 8.
In the present embodiment, described shifting block rotating shaft 7 is fixed with for axially carrying out spacing snap ring 9 to joint shaft bearing 8, snap ring 9 is fixed on shifting block rotating shaft 7, for carrying out axially locating to joint shaft to inner ring.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a synchronizer pull-fork assembly, is characterized in that: comprise sliding sleeve and the shift fork for driving sliding sleeve to reciprocatingly slide vertically; The shift fork arm that described shift fork comprises declutch shift shaft and coordinates with described declutch shift shaft transmission; Described shift fork arm is connected with shifting block by spherical hinge, and described sliding sleeve outer side wall is provided with and sets the allocating slot coordinated ahead.
2. synchronizer pull-fork assembly according to claim 1, is characterized in that: described shifting block is provided with center hole; Described shift fork arm is fixed with shifting block rotating shaft, is provided with joint shaft bearing between described shifting block rotating shaft and shifting block and shifting block rotating shaft is rotatably assorted by the hole at this joint shaft bearing and shifting block center.
3. synchronizer pull-fork assembly according to claim 2, is characterized in that: described shift fork arm comprises the principal arm be fixedly connected with declutch shift shaft and two points of arms being fixed on principal arm upper end; Described two points of arms are equipped with shifting block.
4. synchronizer pull-fork assembly according to claim 3, is characterized in that: the axis of described declutch shift shaft is arranged with sliding sleeve axis is mutually vertical.
5. synchronizer pull-fork assembly according to claim 4, is characterized in that: described shifting block center hole comprises the load segment identical with joint shaft bearing external diameter and for axially carrying out spacing spacing section to joint shaft bearing.
6. synchronizer pull-fork assembly according to claim 4, is characterized in that: described shifting block rotating shaft is fixed with for axially carrying out spacing snap ring to joint shaft bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631840.3U CN204164212U (en) | 2014-10-28 | 2014-10-28 | Synchronizer pull-fork assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420631840.3U CN204164212U (en) | 2014-10-28 | 2014-10-28 | Synchronizer pull-fork assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164212U true CN204164212U (en) | 2015-02-18 |
Family
ID=52537902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420631840.3U Expired - Fee Related CN204164212U (en) | 2014-10-28 | 2014-10-28 | Synchronizer pull-fork assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164212U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276173A (en) * | 2015-11-27 | 2016-01-27 | 重庆清平机械有限责任公司 | Automatic selector fork |
| CN113153928A (en) * | 2021-03-25 | 2021-07-23 | 东风商用车有限公司 | Clutch release fork assembly |
-
2014
- 2014-10-28 CN CN201420631840.3U patent/CN204164212U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276173A (en) * | 2015-11-27 | 2016-01-27 | 重庆清平机械有限责任公司 | Automatic selector fork |
| CN113153928A (en) * | 2021-03-25 | 2021-07-23 | 东风商用车有限公司 | Clutch release fork assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204140852U (en) | A kind of automotive gear-shifting fork | |
| CN204164212U (en) | Synchronizer pull-fork assembly | |
| CN204572993U (en) | There is the transmission shaft structure of guide support | |
| CN203717889U (en) | Manual mechanical shifting mechanism | |
| CN104121331B (en) | Double-screw impregnator gear drive | |
| CN203348363U (en) | Motor steering shaft medium joint transmission shaft with novel positioning structure | |
| CN203143803U (en) | Polished rod traverse unit | |
| CN204186940U (en) | Output shaft of gear-box gear | |
| CN204083065U (en) | A kind of worm and gear for sewing machine oil pump | |
| CN103206513B (en) | A kind of idle gear pad | |
| CN205438604U (en) | A mechanical tongs for auto parts production | |
| CN105276102A (en) | Combined hydraulic speed changing heavy gearbox | |
| CN204403129U (en) | A kind of high-performance pivoting support | |
| CN107218391B (en) | Gear shifting limiting mechanism of manual transmission | |
| CN103195823B (en) | Hub | |
| CN204082885U (en) | Drive mechanism | |
| CN203161996U (en) | Planetary reducer with input shaft mechanism | |
| CN203453429U (en) | Double-bearing over-positioning device | |
| CN202768814U (en) | Anti-attrition shifting fork | |
| CN205677963U (en) | A kind of balance flexible axle of Universal drive | |
| CN203440651U (en) | Rotating shuttle shaft sleeve special for carpet embroidery | |
| CN201605408U (en) | Large-disc gear structure | |
| CN204186951U (en) | Gearbox shifting engaging gear | |
| CN203430985U (en) | Ultrahigh-speed composite rolling bearing | |
| CN204784573U (en) | Derailleur idler structure of reversing gear |
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 |
Granted publication date: 20150218 Termination date: 20191028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |