CN209800709U - Novel shifting fork with local plastic-coated fork leg - Google Patents
Novel shifting fork with local plastic-coated fork leg Download PDFInfo
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- CN209800709U CN209800709U CN201822217174.XU CN201822217174U CN209800709U CN 209800709 U CN209800709 U CN 209800709U CN 201822217174 U CN201822217174 U CN 201822217174U CN 209800709 U CN209800709 U CN 209800709U
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Abstract
The utility model discloses a novel shift fork of shifting that local package of fork foot was moulded, including the shift fork main part, including an interior concave part in the shift fork main part, the semicircle tip of interior concave part forms shift fork foot, the shift fork still includes a plurality of package and moulds the body for carry out local package to shift fork foot and mould, the package is moulded the body and is carried out the rigid coupling through injection moulding process and shift fork foot. The utility model discloses a package is moulded the body and has been carried out local package to the fork foot position of shift fork and mould, at gearbox operation in-process, can effectively reduce the friction between shift fork foot and tooth cover, and the shift fork improves the noise to the impact of tooth cover when slowing down to shift then to, the package is moulded the body and is carried out the mode of rigid coupling through injection moulding process and shift fork main part, makes the package mould the body can last stable performance, be difficult for droing at gearbox operation in-process.
Description
Technical Field
The utility model belongs to the technical field of the motor transmission, concretely relates to novel shift fork of shifting that fork foot part package was moulded.
background
For automobiles, the output torque and the rotating speed of the piston engine which is widely applied at present have smaller variation range. In order to adapt to the constantly changing driving conditions and at the same time to operate the engine in the most favorable operating conditions (high power, low fuel consumption), a gearbox is provided in the transmission system. The shifting fork is an important part in a gear shifting system as an executor of gear shifting action in the gearbox. The performance of the gearbox is directly influenced by the structural design and the machining quality of the shifting fork.
The shifting fork used by the existing automobile gearbox is mainly divided into a forged steel shifting fork and a cast aluminum shifting fork. Cast the aluminium shift fork than traditional forged steel shift fork, weight is lighter, and the shaping is simpler, and processing is more high-efficient, and casting process more does benefit to the realization of complicated structural design simultaneously. At present, the technology is mature day by day, gradually replaces the traditional forged steel shifting fork, becomes the mainstream of the shifting fork industry, and is widely applied to various passenger vehicle gearboxes.
Chinese patent that 2014 1 month 1 discloses a shift fork assembly and manual transmission and car (publication number CN203374777U) provide a shift fork assembly, including the base member, including an interior recess on the base member, the semicircle end of interior recess forms shift fork foot, and the shift fork assembly still includes: and the fork leg sleeves are used for being in contact with the gear sleeves and are arranged on the fork legs of the shifting fork. The utility model has the defects that: the fork foot sleeve arranged on the fork foot of the shifting fork is easy to fall off, which is not beneficial to improving the abrasion of the fork foot stably for a long time.
Disclosure of Invention
The utility model aims at the problem that prior art exists, provide a novel shift fork of shifting that fork foot local package was moulded, to the local package of fork foot of shift fork with the help of injection moulding technology and mould the processing, under the prerequisite that satisfies shift fork basic function, compromise the friction reduction, slow down the impact and improve the demand of noise, solve the problem that current fork foot cover drops easily.
In order to achieve the above object, the utility model adopts the following technical scheme:
The utility model provides a local package of fork foot is moulded novel shift fork of shifting, includes the shift fork main part, include an interior concave part in the shift fork main part, the semicircle tip of interior concave part forms the shift fork foot, the shift fork still includes a plurality of package and moulds the body for carry out local package to the shift fork foot and mould, the package is moulded the body and is carried out the rigid coupling through injection moulding process and shift fork foot.
Preferably, the shifting fork further comprises a bushing, and the bushing forms an interference fit with the shaft hole through a press-fitting process. Sliding bushings are respectively arranged at two ends of the shaft hole of the shifting fork, so that the friction between the shifting fork and the shifting fork shaft is effectively reduced and the oil consumption is improved in the running process of the gearbox; further, if the sliding bush is replaced by the sliding bearing, the effect is more remarkable.
Preferably, the shift fork further comprises a sliding block, and the sliding block is fixed with the shift fork main body through a bolt. The sliding block is arranged at the other end of the shifting fork main body opposite to the shifting fork foot and is fixed on the shifting fork main body through a bolt. In the running process of the gearbox, the friction on the shifting fork main body is reduced, and the oil consumption is improved.
Preferably, there are two plastic-coated bodies, which are respectively and fixedly connected to the two shifting fork legs. The plastic-coated body is fixedly connected with the shifting fork foot through an injection molding process.
Preferably, the plastic-coated body consists of a top surface and two side surfaces, and a plurality of first through holes are formed in one side surface. The top surface and the two side surfaces are in contact with the fork leg of the shifting fork. The top surface and the two side surfaces are arc surfaces.
Preferably, a plurality of second through holes are formed in the fork leg of the shifting fork, and the second through holes are matched with the first through holes.
Furthermore, the shifting fork foot also comprises a concave hole and a protrusion, and the concave hole and the protrusion are arranged on one side opposite to the plastic-coated body.
Preferably, the first through hole and the second through hole are both provided with two. The first through hole is in one-to-one correspondence with the second through hole in position and is matched in size, so that liquid plastic can flow into the first through hole and the second through hole when injection molding is conducted, and the plastic coated body is fixedly connected with the shifting fork main body.
Preferably, the shifting fork main body is formed by casting aluminum alloy. For the shift fork of types such as cast iron, cast steel and steel sheet tailor-welding, the utility model discloses a technology is simpler, and weight is also lighter. Further, other light-weight materials can be selected or light-weight design can be carried out, and the effect is more remarkable.
Compared with the prior art, the beneficial effects of the utility model are that: 1) the utility model discloses a package is moulded the body and has been carried out local package to the fork foot position of shift fork, in the gearbox operation process, can effectively reduce the friction between shift fork foot and tooth cover, slows down the impact of shift fork to the tooth cover when shifting gears, then improves the noise to, and, the package is moulded the body and is carried out the mode of rigid coupling through injection molding process and shift fork main part, makes the package mould the body can continuously stable performance in the gearbox operation process, be difficult for droing; 2) the sliding bushings are respectively arranged at the two ends of the shaft hole of the shifting fork, so that the friction between the shifting fork and the shifting fork shaft can be effectively reduced and the oil consumption can be improved in the running process of the gearbox; 3) the utility model discloses a shift fork uses aluminum alloy casting shaping, for the shift fork of types such as cast iron, cast steel and steel sheet tailor-welding, technology is simpler, and weight is also lighter.
Drawings
Fig. 1 is a schematic structural view of a novel gear shifting fork in the embodiment of the present invention;
FIG. 2 is a schematic structural view of the plastic-covered body and the fork leg of the shifting fork in the embodiment of the present invention;
FIG. 3 is a schematic structural view of the embodiment of the present invention after the plastic-coated body is molded;
FIG. 4 is a cross-sectional view of the tundish body of the present invention;
Fig. 5 is a schematic structural diagram of a slider in an embodiment of the present invention;
fig. 6 is a schematic view of the working principle of the slider in the embodiment of the present invention;
In the figure: 1. a shift fork main body; 2. a bushing; 3. a bushing; 4. a slider; 5. a bolt; 6. wrapping a plastic body; 7. wrapping a plastic body; 8. a second through hole; 9. a first through hole; 10. concave holes; 11. and (4) protruding.
Detailed Description
the technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a local package of fork foot is moulded novel shift fork of shifting, includes the shift fork main part, include an interior concave part in the shift fork main part, the semicircle tip of interior concave part forms the shift fork foot, the shift fork still includes a plurality of package and moulds the body for carry out local package to the shift fork foot and mould, the package is moulded the body and is carried out the rigid coupling through injection moulding process and shift fork foot.
Particularly, the utility model discloses the contact of shift fork foot and gearbox tooth cover of shift fork, shift fork foot promote the tooth cover and are axial motion, accomplish the engagement or the separation of synchronous ware and gear. After the shifting fork foot is partially coated with plastics, the shifting fork foot is not in direct contact with the gear sleeve but is in contact with the gear sleeve through a plastic coating body. In-process of shifting gears, the friction noise of shift fork foot and tooth cover reduces, and, the utility model discloses a package plastic body utilizes injection molding process and shift fork foot to carry out the rigid coupling, is difficult for droing, can last stable work, effectively reduces the friction between shift fork foot and tooth cover, and the shift fork improves the noise to the impact of tooth cover when slowing down to shift gears. The utility model discloses a shift fork uses aluminum alloy casting shaping, for the shift fork of types such as cast iron, cast steel and steel sheet tailor-welding, technology is simpler, and weight is also lighter. In practical application, if other light-weight materials are selected or light-weight design is considered, the effect is more remarkable.
As shown in fig. 1, in the embodiment of the utility model, including half convex interior concave part in the shift fork main part of shift fork, two tip formation two shift fork feet at interior concave part edge have the plastic-coated body through the rigid coupling of injection moulding technology on each shift fork foot. The plastic-coated body is positioned between the fork foot of the shifting fork and the gear sleeve and contacted with the gear sleeve. Wherein, the plastic-coated body has two, respectively the rigid coupling on two shift fork feet. The plastic-coated body is formed by integral injection molding and is fixedly connected with the fork foot of the shifting fork through an injection molding process.
specifically, as shown in fig. 2, in the embodiment of the present invention, the plastic-coated body is composed of a top surface and two side surfaces, and the top surface and the two side surfaces contact with the fork legs. The top surface and the two side surfaces are arc surfaces. Two first through holes are formed in one side face of the plastic-coated body, two second through holes are formed in the shifting fork leg, and the second through holes are matched with the first through holes, so that the plastic-coated body can be fixedly connected to the shifting fork leg better during injection molding.
And during injection molding, liquid plastic flows into the first through hole and the second through hole, and the plastic is solidified to be wrapped and fixedly connected to the shifting fork leg. As shown in fig. 3, after injection molding, the first through hole and the second through hole are filled with solidified liquid plastic, so that the plastic-coated body is firmly fixed on the fork leg. The plastic-coated body is fixedly connected to the shifting fork leg through the injection molding process, so that the plastic-coated body is more firmly connected with the shifting fork leg, the overall strength is higher, and the plastic-coated body is not easy to fall off.
As shown in fig. 4, the fork leg further includes a concave hole and a protrusion, and the concave hole and the protrusion are disposed on the opposite side of the end portion to the plastic-coated body. Specifically, the concave hole is arranged for casting, demolding and ejecting a blank, and the protrusion is arranged for fixing and positioning in the machining process of the blank.
Specifically, the shifting fork further comprises a bushing, and the bushing is in interference fit with the shaft hole through a press fitting process. Sliding bushings are respectively installed at two ends of the shaft hole of the shifting fork, so that friction between the shifting fork and the shifting fork shaft is effectively reduced and oil consumption is improved in the running process of the gearbox. Further, in actual use, if a sliding bearing is selected to replace the sliding bush, the effect is more remarkable.
specifically, the shifting fork further comprises a sliding block, the structural schematic diagram of the sliding block is shown in fig. 5, and the sliding block is fixed with the shifting fork main body through a bolt. The sliding block is arranged at the other end of the shifting fork main body opposite to the shifting fork foot and is fixed on the shifting fork main body through a bolt. As shown in figure 6, in the running process of the gearbox, the sliding block can reduce friction on the shifting fork main body and improve oil consumption.
the utility model discloses a package is moulded the body and has been carried out local package to the fork foot position of shift fork and mould, at gearbox operation in-process, can effectively reduce the friction between shift fork foot and tooth cover, and the shift fork improves the noise to the impact of tooth cover when slowing down to shift then to, the package is moulded the body and is carried out the mode of rigid coupling through injection moulding process and shift fork main part, makes the package mould the body can last stable performance, be difficult for droing at gearbox operation in-process. Wherein, the utility model discloses sliding bush is equipped with respectively at the shaft hole both ends of shift fork, at gearbox operation in-process, can reduce friction between shift fork and the shift fork axle effectively, improve the oil consumption, simultaneously, the utility model discloses a shift fork uses the aluminum alloy casting shaping, for the shift fork of types such as cast iron, cast steel and steel sheet tailor-welding, technology is simpler, and weight is also lighter.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a local package of fork foot is moulded novel shift fork of shifting, includes the shift fork main part, include an interior concave part in the shift fork main part, the semicircle tip of interior concave part forms shift fork foot, a serial communication port, the shift fork still includes a plurality of package and moulds the body for carry out local package to shift fork foot and mould, the package moulds the body and carries out the rigid coupling through injection molding process and shift fork foot.
2. the novel shifting fork with the partially plastic-coated fork leg as claimed in claim 1, further comprising a bushing, wherein the bushing forms an interference fit with the shaft hole through a press fitting process.
3. The novel shifting fork with partially-coated fork legs according to claim 1, further comprising a sliding block, wherein the sliding block is fixed with the fork main body through a bolt.
4. The novel gear shifting fork with partially-coated fork legs as claimed in claim 1, wherein the number of the coated plastic bodies is two, and the two coated plastic bodies are respectively and fixedly connected to the two fork legs of the shifting fork.
5. The novel gear shifting fork with partially-coated fork legs as claimed in claim 1, wherein the coating body comprises a top surface and two side surfaces, and a plurality of first through holes are formed in one of the side surfaces.
6. The novel shifting fork with partially plastic-coated fork leg as claimed in claim 5, wherein a plurality of second through holes are formed on the fork leg of the shifting fork, and the second through holes are matched with the first through holes.
7. The novel gear shifting fork with partially plastic-coated fork legs as claimed in claim 6, wherein two through holes are formed in each of the first through hole and the second through hole.
8. The novel shifting fork with the partially plastic-coated fork leg according to claim 1, wherein the fork body is cast and molded by aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822217174.XU CN209800709U (en) | 2018-12-27 | 2018-12-27 | Novel shifting fork with local plastic-coated fork leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822217174.XU CN209800709U (en) | 2018-12-27 | 2018-12-27 | Novel shifting fork with local plastic-coated fork leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209800709U true CN209800709U (en) | 2019-12-17 |
Family
ID=68818891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822217174.XU Active CN209800709U (en) | 2018-12-27 | 2018-12-27 | Novel shifting fork with local plastic-coated fork leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209800709U (en) |
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2018
- 2018-12-27 CN CN201822217174.XU patent/CN209800709U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430000 no.239 houguanhu Avenue, Wuhan Economic and Technological Development Zone, Hubei Province Patentee after: Dongfeng Dingxin Power System Technology Co.,Ltd. Address before: 430000 no.239 houguanhu Avenue, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: DONGFENG GETRAG TRANSMISSION Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230607 Address after: 430000 No. 339 Zhuanyang Avenue, Wuhan Economic and Technological Development Zone, Hubei Province Patentee after: Zhixin Technology Co.,Ltd. Address before: 430000 no.239 houguanhu Avenue, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: Dongfeng Dingxin Power System Technology Co.,Ltd. |