CN203374777U - Shifting fork assembly, manual transmission and automobile - Google Patents
Shifting fork assembly, manual transmission and automobile Download PDFInfo
- Publication number
- CN203374777U CN203374777U CN201320471254.2U CN201320471254U CN203374777U CN 203374777 U CN203374777 U CN 203374777U CN 201320471254 U CN201320471254 U CN 201320471254U CN 203374777 U CN203374777 U CN 203374777U
- Authority
- CN
- China
- Prior art keywords
- fork
- assembly
- shifting
- shifting fork
- footmuff
- 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 - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/324—Gear shift yokes, e.g. shift forks characterised by slide shoes, or similar means to transfer shift force to sleeve
Abstract
The utility model provides a shifting fork assembly. The shifting fork assembly comprises a substrate which comprises an inwardly concave portion, and the semi-circular arc end portions of the inwardly concave portion form shifting fork feet. The shifting fork assembly further comprises a plurality of fork foot sleeves used for making contact with a tooth sleeve, and the fork foot sleeves are arranged on the shifting fork feet. The utility model further provides a manual transmission comprising the shifting fork assembly. The utility model further provides an automobile comprising the manual transmission. The cast steel substrate of the shifting fork assembly does not need heat treatment and has no deformation, and flatness is improved. Friction noise of the shifting fork assembly and the tooth sleeve in a gear shifting process is reduced. The fork foot sleeves are made of plastic materials, thereby being good in abrasion resistance and reducing abrasion of the fork feet. Assembly processes of the plastic fork foot sleeves and the fork feet on the substrate are simple. The cast steel substrate is light in weight compared with a copper substrate, so that fuel economy is improved, and production cost is reduced.
Description
Technical field
The utility model relates to the automotive transmission field, relates in particular to a kind of shifting fork assembly and manual transmission and automobile.
Background technique
Along with scientific and technological development, automobile is more and more universal, and the user is more and more higher to the requirement of Security, reliability and the travelling comfort of automobile.
In manual automobile, manual transmission has very important impact to the routine use of automobile.Manual transmission is mainly realized gear shift by the moving speed change gear of shift fork fork tape of shift fork at present.Shown in Fig. 1, the shift fork of prior art is that directly cast is one-body molded, and generally, shift fork is mainly made by cast steel, cast aluminium and cast copper.
In prior art, there is following defect in shifting fork assembly:
1, for the cast steel shift fork, easily there is heat treatment deformation, two fork pin are bad planeness, easily cause fork pin and the empty friction of tooth cover while changing gear, easily out of supply when serious, during gear shift, fork pin and tooth cover impact noise are serious, the steel to steel wear resistance is bad, the problems such as serious wear.
2, for the cast aluminium shift fork, easily there is the aluminum casting strength deficiency, cause volume bigger than normal, be difficult for arranging.
3, for the cast copper shift fork, easily exist casting weight large, be unfavorable for fuel economy, the brass cost is high, is unfavorable for the problems such as economic benefit.
The model utility content
The shift fork fork pin planeness caused for the heat treatment deformation that overcomes cast steel shift fork in prior art is bad, shift fork is easy to wear with friction noise, shift fork that tooth overlaps during gear shift, strength deficiency, the volume of cast aluminium shift fork are large, brass shift fork weight is large, the high in cost of production technical problem, and the utility model provides a kind of shifting fork assembly and manual transmission and automobile.
In order to reach above-mentioned technique effect, the utility model adopts following technological scheme.
The utility model provides a kind of shifting fork assembly, comprise matrix, comprise an inner fovea part on described matrix, the semi-circle end of described inner fovea part forms shift fork fork pin, described shifting fork assembly also comprises: a plurality of fork footmuffs for contacting with the tooth cover, described fork footmuff is arranged on described shift fork fork pin.
Furthermore, described matrix is for having certain thickness platy structure, and described shift fork fork pin comprises two first surfaces that are oppositely arranged and second surface.
Furthermore, described fork footmuff comprises the mounting groove coordinated with described shift fork fork pin, and described fork footmuff is buckled on described shift fork fork pin by described mounting groove, and two sides that form described mounting groove contact with described second surface with described first surface respectively.
Furthermore, be respectively arranged with the protruding structure of a plurality of hemispheres to described mounting groove internal projection on two described sides, described first surface and second surface are provided with the fixed hole coordinated with described protruding structure.
Furthermore, described fork footmuff also comprises the surface of contact for contacting with the tooth cover arranged between two described sides, and described surface of contact is arc shaped surface.
Furthermore, described shift fork fork pin comprises the card interface along described shift fork fork pin edge to described shift fork fork pin inner recess, and described fork footmuff comprises card access surface, and described card access surface is inserted described card interface.
Furthermore, the semi-circle of described inner fovea part middle part forms a boss.
Furthermore, described matrix is Cast Steel, and described fork footmuff is working of plastics.
The utility model provides a kind of manual transmission, comprises shifting fork assembly as above.
The utility model provides a kind of automobile, comprises manual transmission as above.
The beneficial effects of the utility model are: the cast steel substrate of shifting fork assembly of the present utility model does not need heat treatment, not distortion, and planeness is improved.Reduced the friction noise of shifting fork assembly and tooth cover in the gearshift procedure.The fork footmuff is plastic materials, and wear resistance is good, has reduced the wearing and tearing of fork pin.The plastic fork footmuff is the die sinking molding and forming separately, has significantly reduced the die sinking expense, improves injection moulding efficiency assembly technology simple.The matrix phase of cast steel is lightweight for the copper matrix, improves fuel economy.Reduce production costs.
The accompanying drawing explanation
Fig. 1 means the structural representation of the cast steel shift fork of prior art;
Fig. 2 means the structural representation of the shifting fork assembly in the utility model embodiment;
Fig. 3 means the shift fork of the shifting fork assembly in the utility model embodiment and the sectional drawing of fork footmuff mounting structure;
Fig. 4 means the base structure schematic diagram of the shifting fork assembly in the utility model embodiment;
Fig. 5 means the sectional drawing of the fork footmuff of the shifting fork assembly in the utility model embodiment;
Fig. 6 means the structural drawing of the fork footmuff in the utility model embodiment.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with the accompanying drawings and the specific embodiments the utility model is described in detail.
A kind of shifting fork assembly, comprise matrix, comprises an inner fovea part on described matrix, and the semi-circle end of described inner fovea part forms shift fork fork pin, and described shifting fork assembly also comprises: a plurality of fork footmuffs for contacting with the tooth cover, described fork footmuff is arranged on described shift fork fork pin.
Specifically, the shift fork of the utility model shifting fork assembly fork pin contact with the gearbox gear cover, and shift fork fork pin promotion tooth cover axially moves, and completes the joint of synchronizer and shifting gear or separates.After shift fork fork pin assembling fork footmuff, the shift fork fork pin of shifting fork assembly is not directly with the tooth cover, directly to contact, but contacts with the tooth cover by the fork footmuff.In addition, the cast steel substrate of shifting fork assembly of the present utility model does not need heat treatment, not distortion, and planeness is improved.In gearshift procedure, the friction noise of shift fork fork pin and tooth cover reduces.
Shown in Fig. 2, in the utility model specific embodiment, the matrix 1 of shifting fork assembly comprises a semicircular arc inner fovea part.100 end, inner fovea part edge forms two shift fork fork pin, on each shift fork fork pin, a fork footmuff 2 is installed.The position of fork footmuff 2 is the position contacted between shift fork is pitched pin and tooth is overlapped, with the tooth cover.
Shown in Fig. 3, matrix 1 is for certain thickness platy structure is arranged, and the matrix 1 in the utility model embodiment is that cast forms, and has both guaranteed bulk strength, has also greatly improved the efficiency of producing.The inner fovea part edge 100 of matrix 1 is arc.Shift fork fork pin comprises upper and lower two surfaces, between first surface (being the upper surface of shift fork fork pin) and second surface (being the lower surface of shift fork fork pin), is shift fork fork pin edge 101.The semi-circle middle part of inner fovea part forms a boss 104.
Shown in Fig. 4, Fig. 5 and Fig. 6, the fork footmuff is engineering plastics, by Shooting Technique, is made.Plastic material is wear-resisting reliable.The fork footmuff comprises a mounting groove 204, and the A/F of mounting groove 204 and shift fork fork pin edge 101 thickness are complementary.Mounting groove 204 can directly insert on shift fork fork pin, and the fork footmuff is buckled in shift fork fork pin edge 101 by mounting groove 204.
When the fork footmuff is connected to respectively on two shift fork fork pin, the 201He side, two sides 202 of the mounting groove 204 of fork footmuff contacts with lower surface with the upper surface of two shift fork fork pin respectively.201He side, side 202 is respectively arranged with a plurality of hemispheres protruding structure 205 projecting inward to mounting groove 204, and upper surface and lower surface are provided with the fixed hole 102 coordinated with protruding structure 205.Protruding structure 205 can stretch in fixed hole 102.Fixed hole 102 is blind hole, do not connect, like this in protruding structure 205 stretches into fixed hole 102, fixed hole 102 and on every side matrix can keep enough intensity.Like this, fixing more firm respectively and between two shift forks fork pin of fork footmuff.The fork footmuff also comprises the surface of contact 206 arranged between 201He side, side 202, and the outer surface of surface of contact 206 meshes or separates with the direct geared of gearbox.Surface of contact 206 is arc shaped surface.Like this, by the arc shaped surface of surface of contact 206, stressing conditions in the time of can improving fork footmuff and Gear Contact.
The inner fovea part of matrix comprises the card interface 103 along interior shift fork fork pin edge 101 to shift fork fork pin inner recess, and card interface 103 is rectangular cross section.The card access surface 203 of fork footmuff is inserted card interface 103, has so also increased fixing between fork footmuff and matrix.
Connect-disconnect structure between fork footmuff and matrix is very simple, is conducive to reduce installation time, enhances productivity.
The invention also discloses a kind of manual transmission, it comprises shifting fork assembly as above.Adopt the manual transmission of shifting fork assembly in the utility model embodiment, due to the fork footmuff and the gear conclusion of manual transmission of shifting fork assembly by plastics, the noise produced while having greatly reduced the wearing and tearing between overlapping of shifting fork assembly and tooth and gear shift.
The invention also discloses a kind of automobile, comprise above-mentioned manual transmission.Automobile in the utility model has more reliable manual transmission, and the noise while having reduced gear shift and the wearing and tearing of speed changer have reduced user's user cost, for the user brings better driving experience.
Above-described is preferred implementation of the present utility model; should be understood that the ordinary person for the art; can also make some improvements and modifications not breaking away under principle prerequisite described in the utility model, these improvements and modifications are also in protection domain of the present utility model.
Claims (10)
1. a shifting fork assembly, comprise matrix, comprises an inner fovea part on described matrix, and the semi-circle end of described inner fovea part forms shift fork fork pin, it is characterized in that, described shifting fork assembly also comprises:
A plurality of fork footmuffs for contacting with the tooth cover, described fork footmuff is arranged on described shift fork fork pin.
2. shifting fork assembly as claimed in claim 1, is characterized in that, described matrix is for having certain thickness platy structure, and described shift fork fork pin comprises two first surfaces that are oppositely arranged and second surface.
3. shifting fork assembly as claimed in claim 2, it is characterized in that, described fork footmuff comprises the mounting groove coordinated with described shift fork fork pin, described fork footmuff is buckled on described shift fork fork pin by described mounting groove, and two sides that form described mounting groove contact with described second surface with described first surface respectively.
4. shifting fork assembly as claimed in claim 3, is characterized in that, is respectively arranged with the protruding structure of a plurality of hemispheres to described mounting groove internal projection on two described sides, and described first surface and second surface are provided with the fixed hole coordinated with described protruding structure.
5. shifting fork assembly as claimed in claim 4, is characterized in that, described fork footmuff also comprises the surface of contact for contacting with the tooth cover arranged between two described sides, and described surface of contact is arc shaped surface.
6. shifting fork assembly as claimed in claim 1, is characterized in that, described shift fork fork pin comprises the card interface along described shift fork fork pin edge to described shift fork fork pin inner recess, and described fork footmuff comprises card access surface, and described card access surface is inserted described card interface.
7. shifting fork assembly as claimed in claim 1, is characterized in that, the semi-circle middle part of described inner fovea part forms a boss.
8. shifting fork assembly as claimed in claim 1, is characterized in that, described matrix is Cast Steel, and described fork footmuff is working of plastics.
9. a manual transmission, is characterized in that, comprises as arbitrary described shifting fork assembly in claim 1 to 8.
10. an automobile, is characterized in that, comprises manual transmission as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471254.2U CN203374777U (en) | 2013-08-02 | 2013-08-02 | Shifting fork assembly, manual transmission and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471254.2U CN203374777U (en) | 2013-08-02 | 2013-08-02 | Shifting fork assembly, manual transmission and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374777U true CN203374777U (en) | 2014-01-01 |
Family
ID=49837306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320471254.2U Expired - Lifetime CN203374777U (en) | 2013-08-02 | 2013-08-02 | Shifting fork assembly, manual transmission and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374777U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763746A (en) * | 2016-12-14 | 2017-05-31 | 无锡市盛源汽车配件厂 | Reinforce anticollision shift fork base |
| WO2020096508A1 (en) * | 2018-11-09 | 2020-05-14 | Scania Cv Ab | A pad for a gear shift fork |
-
2013
- 2013-08-02 CN CN201320471254.2U patent/CN203374777U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763746A (en) * | 2016-12-14 | 2017-05-31 | 无锡市盛源汽车配件厂 | Reinforce anticollision shift fork base |
| WO2020096508A1 (en) * | 2018-11-09 | 2020-05-14 | Scania Cv Ab | A pad for a gear shift fork |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |