CN205592382U - Automotive transmission and shift fork of shifting thereof - Google Patents
Automotive transmission and shift fork of shifting thereof Download PDFInfo
- Publication number
- CN205592382U CN205592382U CN201620440628.8U CN201620440628U CN205592382U CN 205592382 U CN205592382 U CN 205592382U CN 201620440628 U CN201620440628 U CN 201620440628U CN 205592382 U CN205592382 U CN 205592382U
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- China
- Prior art keywords
- shift fork
- connecting portion
- rib
- axle
- fork axle
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- Withdrawn - After Issue
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Abstract
The utility model discloses a shift fork of shifting of car derailleur, including interconnect's shift fork body and declutch shift shaft, still include with the shift fork body reaches the rib that the declutch shift shaft is connected, the rib be equipped with with declutch shift shaft periphery complex arc recess, the perpendicular to is followed to the arc recess the direction of declutch shift shaft axis is extended, the rib with the declutch shift shaft is in the welding of arc groove, and the axis of the welding seam perpendicular to declutch shift shaft between the two, this welding seam is difficult to the fracture for joint strength between rib and the declutch shift shaft is higher, thereby improves the life of this shift fork of shifting, simultaneously, can improve the security of driving.
Description
Technical field
This utility model relates to Vehicle Engineering technical field, particularly to a kind of automotive transmission and selector fork thereof.
Background technology
At auto industry field, variator changes the torque of engine crankshaft by changing gear ratio, with adapt to automobile start to walk, accelerate, travel and overcomes different kinds of roads obstruction etc. is different travel under the conditions of, to driving net tractive force of wheel and the demand of speed.Under normal circumstances, the speed-change process of variator realizes by being installed on selector fork within case of transmission, selector fork along shift fork axle slide time, it is possible to stir the change pulley in variator, change its input/output rotating ratio, thus change speed.
Along with the development of auto industry, variator gradually lightweight, miniaturization, therefore, the installing space that selector fork allows is more and more less, and the structure design causing selector fork is more and more difficult, and shape also tends to complexity.Panel beating class selector fork can form various labyrinth by bending and welding, can preferably meet the arrangement requirement of the internal small space of variator, thus be used widely.
Fig. 1-3 is a kind of typical panel beating shift fork, and wherein, Fig. 1 is the structural representation of selector fork in prior art；Fig. 2 is the front view of Fig. 1；Fig. 3 is reinforcement and the weld seam schematic diagram of shift fork axle in Fig. 1.
In Fig. 1, shift fork body 1 ＇ welds with shift fork axle 2 ＇, and the structural strength after the two connection is relatively low, it usually needs weld reinforcement between shift fork body 1 ＇ with shift fork axle 2 ＇ to improve intensity.Weld with shift fork axle 2 ＇ and shift fork body 1 ＇ respectively as it is shown in figure 1, the two shift fork feet of shift fork body 1 ＇ are respectively provided with reinforcement 3 ＇, two reinforcement 3 ＇.
During gearshift, promote shift fork axle 2 ＇, shift fork axle 2 ＇ is made to drive shift fork body 1 ＇ to move along the axis direction of shift fork axle 2 ＇ together with reinforcement 3 ＇, shift fork body 1 ＇ and reinforcement 3 ＇ stress are as in figure 2 it is shown, the two is by external force F and the moment of torsion F that acts on reinforcement 3 ＇ and shift fork axle 2 ＇ junction.Simultaneously, owing to the weld seam between reinforcement 3 ＇ and shift fork axle 2 ＇ extends along the axis direction of shift fork axle 2 ＇, obviously, this weld seam is positioned at the action direction of moment of torsion M, therefore, when carrying out repeatedly gear shift operation, above-mentioned weld seam is easily broken off, thus cause the intensity of this selector fork relatively low, and then affect driving safety.
The defect existed in view of above-mentioned selector fork, it would be highly desirable to the selector fork that a kind of intensity is higher is provided.
Utility model content
For solving above-mentioned technical problem, first purpose of the present utility model is for providing the selector fork of a kind of automotive transmission, the rib of this selector fork is provided with along being perpendicular to the arc groove that shift fork axle axis direction extends, so that the weld seam between this arc groove and shift fork axle is not easy fracture, bonding strength between rib and shift fork axle is higher, thus improve the service life of this selector fork, meanwhile, it is capable to improve driving safety.
In order to realize the first purpose of the present utility model, this utility model provides the selector fork of a kind of automotive transmission, including interconnective shift fork body and shift fork axle, also includes the rib being connected with described shift fork body and described shift fork axle；Described rib is provided with the arc groove coordinated with described shift fork axle periphery, and described arc groove extends along the direction being perpendicular to described shift fork axle axis, and described rib welds at described arc groove with described shift fork axle.
Being arranged such, the weld seam between shift fork axle and arc groove extends, now along the direction being perpendicular to shift fork axle axis, this weld seam is perpendicular to the action direction of moment of torsion M, therefore, when automobile shift hunting, compare prior art, under the effect of moment of torsion M, this weld seam is not easy fracture, therefore, bonding strength between rib and shift fork axle is higher, thus improve the service life of this selector fork, it is often more important that, it is possible to increase driving safety.
Alternatively, described rib includes the first connecting portion being connected with described shift fork body and the second connecting portion being connected with described shift fork axle, and described second connecting portion extends towards the direction of described shift fork axle, and described arc groove is located at described second connecting portion；
Described first connecting portion is one-body molded with described second connecting portion or split is arranged.
Alternatively, the edge of described first connecting portion upper surface is integrally formed the flange extended towards described shift fork axle, and described arc groove is located at described flange, and described flange is described second connecting portion；
Described flange is one-body molded with described first connecting portion.
Alternatively, described rib includes the fixed block being connected with described shift fork axle, and the upper end of described first connecting portion offers installing hole, and described fixed block is connected with described first connecting portion by described installing hole, and described arc groove is located at described fixed block, described fixed block is described second connecting portion.
Alternatively, described first connecting portion has two bending plates being connected respectively with two shift fork feet of described shift fork body, and described in two, bending plate is connected by flat board, and bending plate described in two is one-body molded with described flat board.
Alternatively, laser welding is all used between described bending plate and described shift fork foot, described arc groove and described shift fork axle, described shift fork body and described shift fork axle.
Alternatively, described shift fork axle is multidiameter, and it is big footpath section with described shift fork body and described rib junction.
In order to realize the second purpose of the present utility model, this utility model also provides for a kind of automotive transmission, and including the change pulley cooperated and selector fork, wherein, described selector fork is above-described selector fork.
Accompanying drawing explanation
Fig. 1 is the structural representation of selector fork in prior art；
Fig. 2 is the front view of Fig. 1；
Fig. 3 is reinforcement and the weld seam schematic diagram of shift fork axle in Fig. 1；
Fig. 4 is this utility model provided selector fork structural representation in the first specific embodiment；
Fig. 5 is this utility model provided selector fork explosive view in the first specific embodiment；
Fig. 6 is rib and the weld seam schematic diagram of shift fork axle in Fig. 4 and Fig. 5.
In Fig. 1-3:
1 ＇ shift fork body, 2 ＇ shift fork axles, 3 ＇ reinforcements.
In Fig. 2-6:
1 shift fork axle, 11 big footpath sections, 12 path sections；
2 shift fork bodies, 3 ribs, 31 first connecting portions, 311 bending plates, 312 flat boards, 313 installing holes, 32a flange, 32b fixed block, 33 arc grooves.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, the utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Refer to accompanying drawing 4-6, wherein, Fig. 4 is this utility model provided selector fork structural representation in the first specific embodiment；Fig. 5 is this utility model provided selector fork explosive view in the first specific embodiment；Fig. 6 is rib and the weld seam schematic diagram of shift fork axle in Fig. 4 and Fig. 5.
In a kind of specific embodiment, this utility model provides the selector fork of a kind of automotive transmission, as shown in Figure 4, including interconnective shift fork body 2 and shift fork axle 1, also include the rib 3 being connected with shift fork body 2 and shift fork axle 1, in the direction being perpendicular to shift fork axle 1 axis, rib 3 is provided with, with shift fork axle 1 junction, the arc groove 33 coordinated with shift fork axle 1 periphery, and shift fork axle 1 is welded with arc groove 33, thus realize the connection of rib 3 and shift fork axle 1, and this rib 3 welds with shift fork body 2.
Being arranged such, the weld seam between shift fork axle 1 and arc groove 33 extends, now along the direction being perpendicular to shift fork axle 1 axis, this weld seam is perpendicular to the action direction of moment of torsion M, therefore, when automobile shift hunting, compared to the prior art shown in Fig. 1-3, under the effect of moment of torsion M, this weld seam is not easy fracture, therefore, bonding strength between rib 3 and shift fork axle 1 is higher, thus improve the service life of this selector fork, it is often more important that, it is possible to increase driving safety.
Simultaneously, in prior art shown in Fig. 3, owing to reinforcement 3 ＇ and shift fork axle 2 ＇ approximation is mutually perpendicular to, therefore, weld seam therebetween belongs to angle welding (GB/T324-2008), during welding, welding direction need to δ at an angle with weld seam, and welding after structure in, it is thus achieved that effective fusion penetration S1 the most shallower, cause weld strength the highest.In order to improve the weld strength of this structure, the generally opposite side at this weld seam carries out the weld seam that repair welding is same, and based on this, the welding sequence of this structure is more complicated, and in welding process, butt welded seam gap and position while welding are respectively provided with high requirement.
And in the present embodiment, as Figure 4-Figure 6, owing to above-mentioned arc groove 33 is suitable with shift fork axle 1 so that the wall of the two can be fitted completely, therefore, the two forms I type weld seam (GB/T324-2008), during welding, carrying out along bead direction (circumference of shift fork axle 1), welding process operation is simple, and butt welded seam gap and position while welding require the most relatively low such that it is able to reduce welding cost.
Specifically, rib 3 includes the first connecting portion 31 being connected with shift fork body 2 and the second connecting portion connected in shift fork axle 1, and this second connecting portion extends towards the direction of shift fork axle 1, and is provided with above-mentioned arc groove 33, it addition, this first connecting portion 31 and the second connecting portion is one-body molded or split arrange.
It is arranged such, when rib 3, shift fork body 2 coordinate with shift fork axle 1 three, owing to the second connecting portion is provided with arc groove 33, make the rib 3 can be with shift fork axle 1 automatic capturing fitting, and second the connection of connecting portion and shift fork axle 1 do not interfere with the connection of the first connecting portion 31 and shift fork body 2, it is thus possible to improve the positional precision that rib 3 coordinates with shift fork axle 1 and shift fork body 2, conveniently realize the Set and Positioning of each parts.
More specifically, as shown in Figure 4, the edge of the first connecting portion 31 upper surface forms the flange 32a that the direction towards shift fork axle 1 extends, this flange 32a offers above-mentioned arc groove 33, this flange 32a is above-mentioned second connecting portion, and therefore, flange 32a and the first connecting portion 31 are one-body molded.
Being arranged such, rib 3 is overall structure, and the mould needed for its course of processing is less, and requirement on machining accuracy is relatively low, it is simple to realize the quality control in batch product.
It is appreciated that, above-mentioned arc groove 33 is it is not necessary to be located at flange 32a, also may not include this flange 32a, and the first connecting portion 31 is extended towards the direction of shift fork axle 1, and offer above-mentioned arc groove 33 at the first connecting portion 31 upper surface, now, the first connecting portion 31 is one-body molded with the second connecting portion.
In another embodiment, as shown in Figure 5, rib 3 also includes the fixed block 32b for being connected with shift fork axle 1, fixed block 32b offers above-mentioned arc groove 33, the upper surface of the first connecting portion 31 offers installing hole 313, fixed block 32b and installing hole 313 interference fit, to realize fixing fixed block 32b and the first connecting portion 31, now, this fixed block 32b is above-mentioned second connecting portion.In the present embodiment, fixed block 32b and the first connecting portion 31 split are arranged.
It is arranged such, owing to shift fork axle 1 is cylindrical structure, shift fork body 2 is platy structure, when the first connecting portion 31 and the second connecting portion split are arranged, first connecting portion 31 only needs to arrange the structure being connected with cylindric shift fork axle 1, and the second connecting portion only needs to arrange the structure being connected with tabular shift fork body 2 so that the first connecting portion 31 and the second connecting portion processing simplicity, easily realizing, each parts connect precision and improve.
Certainly, above-mentioned the second connecting portion being provided with arc groove 33 also can be fixed on the first connecting portion 31 by connected modes such as clampings, such as, first connecting portion 31 can be provided with draw-in groove, second connecting portion can be provided with grab, and the two cooperates, it is achieved the split of the first connecting portion 31 and the second connecting portion is arranged.
Additionally, in embodiment shown in Fig. 5, first connecting portion 31 upper surface offers square mounting hole 313, there is bottom fixed block 32b the square small boss suitable with installing hole 313, certainly, the structure of above-mentioned installing hole 313 and fixed block 32b is not limited in for the structure shown in Fig. 5, being not construed as limiting herein.
In various embodiments above, as shown in Figure 4 and Figure 5, first connecting portion 31 has two bending plates 311 being connected respectively with two shift fork feet of shift fork body 2, and the two is connected to the outward flange of two shift fork feet, additionally, two bending plates 311 are connected by flat board 312, and two bending plates 311 are one-body molded with flat board 312.
It is arranged such, in various embodiments above, reinforcement 3 ＇ functioned as in Fig. 1-3 of bending plate 311, i.e. plays the effect improving shift fork body 2 with the bonding strength of shift fork axle 1.
In various embodiments above, between bending plate 311 and shift fork foot, arc groove 33 and shift fork axle 1, all use laser welding.By adjusting Laser Welding Speed and power, it is possible to obtain bigger fusion penetration.
Laser welding can obtain bigger welding penetration, meets the weld strength requirement of each parts of selector fork, and speed of welding heat fast, that produce is little, welding time part deformation little, the degree of precision requirement of selector fork can be met, follow-up without complicated supplementary processing.
Certainly, the welding between each parts of selector fork is it is not necessary to realize by laser welding, it is possible to uses other welding manner commonly used in the art, is not construed as limiting herein.
On the other hand, as shown in Figure 4 and Figure 5, above-mentioned shift fork axle 1 is multidiameter, and it is big footpath section 11 with shift fork body 2 and rib 3 junction, remaining is path section 12, and the length of big footpath section 11 is identical along the length of shift fork axle 1 axis direction with shift fork body 2 and rib 3.
Being arranged such, the diameter of this shift fork axle 1 welding position is more than the diameter at its two ends so that laser beam can be avoided in non-solder position, it is to avoid cause laser energy loss and non-solder position burn owing to blocking in welding process.
It addition, this utility model also provides for a kind of automotive transmission, including interconnective change pulley and selector fork, wherein, this selector fork is the selector fork described in any of the above embodiment.Owing to this selector fork has above-mentioned technique effect, the automotive transmission including this selector fork also has corresponding technique effect, and here is omitted.
Above a kind of automotive transmission provided by the utility model and selector fork thereof are all described in detail.Principle of the present utility model and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to this utility model is carried out some improvement and modification, these improve and modification also falls in this utility model scope of the claims.
Claims (8)
1. the selector fork of an automotive transmission, including interconnective shift fork body (2) and shift fork axle (1), also include the rib (3) being connected with described shift fork body (2) and described shift fork axle (1)；It is characterized in that, described rib (3) is provided with the arc groove (33) coordinated with described shift fork axle (1) periphery, described arc groove (33) extends along the direction being perpendicular to described shift fork axle (1) axis, and described rib (3) welds at described arc groove (33) place with described shift fork axle (1).
Selector fork the most according to claim 1, it is characterized in that, described rib (3) includes the first connecting portion (31) being connected with described shift fork body (2) and the second connecting portion being connected with described shift fork axle (1), described second connecting portion extends towards the direction of described shift fork axle (1), and described arc groove (33) is located at described second connecting portion；
Described first connecting portion (31) is one-body molded with described second connecting portion or split is arranged.
Selector fork the most according to claim 2, it is characterized in that, the edge of described first connecting portion (31) upper surface is integrally formed the flange (32a) extended towards described shift fork axle (1), described arc groove (33) is located at described flange (32a), and described flange (32a) is described second connecting portion.
Selector fork the most according to claim 2, it is characterized in that, described rib (3) includes the fixed block (32b) being connected with described shift fork axle (1), the upper end of described first connecting portion (31) offers installing hole (313), described fixed block (32b) is connected with described first connecting portion (31) by described installing hole (313), and described arc groove (33) is located at described fixed block (32b), described fixed block (32b) is described second connecting portion.
5. according to the selector fork according to any one of claim 2-4, it is characterized in that, described first connecting portion (31) has two bending plates (311) that two shift fork feet with described shift fork body (2) respectively are connected, and bending plate described in two (311) is connected by flat board (312), bending plate described in two (311) is one-body molded with described flat board (312).
Selector fork the most according to claim 5, it is characterized in that, between described bending plate (311) and described shift fork foot, described arc groove (33) and described shift fork axle (1), described shift fork body (2) and described shift fork axle (1), all use laser welding.
Selector fork the most according to claim 6, it is characterised in that described shift fork axle (1) is multidiameter, and its with described shift fork body (2) and described rib (3) junction is big footpath section (11).
8. an automotive transmission, including the change pulley cooperated and selector fork, it is characterised in that described selector fork is the selector fork according to any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620440628.8U CN205592382U (en) | 2016-05-16 | 2016-05-16 | Automotive transmission and shift fork of shifting thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620440628.8U CN205592382U (en) | 2016-05-16 | 2016-05-16 | Automotive transmission and shift fork of shifting thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205592382U true CN205592382U (en) | 2016-09-21 |
Family
ID=56932063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620440628.8U Withdrawn - After Issue CN205592382U (en) | 2016-05-16 | 2016-05-16 | Automotive transmission and shift fork of shifting thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205592382U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805305A (en) * | 2016-05-16 | 2016-07-27 | 湖北中航精机科技有限公司 | Automobile transmission and shifting fork thereof |
| CN110487566A (en) * | 2019-09-12 | 2019-11-22 | 湖北中航精机科技有限公司 | Bulb ejector pin device and shift fork detector |
-
2016
- 2016-05-16 CN CN201620440628.8U patent/CN205592382U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805305A (en) * | 2016-05-16 | 2016-07-27 | 湖北中航精机科技有限公司 | Automobile transmission and shifting fork thereof |
| CN110487566A (en) * | 2019-09-12 | 2019-11-22 | 湖北中航精机科技有限公司 | Bulb ejector pin device and shift fork detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160921 Effective date of abandoning: 20190329 |
|
| AV01 | Patent right actively abandoned |