CN214946323U

CN214946323U - Automotive transmission stationarity gearshift

Info

Publication number: CN214946323U
Application number: CN202121328812.0U
Authority: CN
Inventors: 赵建雷; 丁方远
Original assignee: Hebei Chensen Auto Parts Co ltd
Current assignee: Hebei Chensen Auto Parts Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-11-30
Anticipated expiration: 2031-06-15

Abstract

The utility model relates to the field of automotive technology, and a automotive transmission stationarity gearshift is disclosed, including case lid and shift fork, be provided with the fixed plate on the bottom inner wall of case lid, fixed mounting has the limiting plate on the bottom wall of fixed plate, and the limiting plate is the U font of handstand, and the through-hole has been seted up on the recess wall that the shift fork is located the limiting plate, runs through on the limiting plate there is the locating pin, and the locating pin is provided with evenly distributed's guiding mechanism on being located the inner wall of shift fork through-hole. This automotive transmission stationarity gearshift, through setting up guiding mechanism, the shift fork passes through the through-hole and can swings on the locating pin to when shifting, the inner wall and the smooth ball of shift fork through-hole carry out extrusion contact, smooth ball's surface is smooth, when the shift fork swings on the locating pin, the inner wall and the smooth and all smooth ball that have distributed of through-hole carry out extrusion contact, then improved the stationarity of shift fork motion, then corresponding improvement the stationarity of automotive transmission when shifting.

Description

Automotive transmission stationarity gearshift

Technical Field

The utility model relates to the field of automotive technology, especially, relate to an automotive transmission stationarity gearshift.

Background

The fork end of the shifting fork is arranged in an annular groove in the middle of the gear sliding sleeve, the vertical end of the shifting fork is movably arranged in the limiting frame through a positioning pin, and the shifting fork swings directionally through the positioning pin in the gear shifting process of the transmission. The automobile transmission in the prior art has certain friction in the gear shifting process, and the contact friction between the positioning pin and the vertical end of the shifting fork and the limiting frame is large, so that the shifting fork cannot reach a smooth state when swinging, and the gear shifting stability of the automobile transmission is reduced. Therefore, the smooth gear shifting mechanism of the automobile transmission is provided.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem existing in the prior art and provides a stable gear shifting mechanism of an automobile transmission.

In order to realize the purpose, the utility model adopts the following technical proposal, a stable gearshift mechanism of an automobile transmission comprises a box cover and a shifting fork, wherein the bottom inner wall of the box cover is provided with a fixed plate, the bottom wall of the fixed plate is fixedly provided with a limiting plate, the limiting plate is in an inverted U shape, the shifting fork is arranged in a groove of the limiting plate, the shifting fork is arranged on the groove wall of the limiting plate and is provided with a through hole, a positioning pin penetrates through the limiting plate and penetrates through the through hole on the shifting fork, the left side wall of the positioning pin is fixedly provided with a positioning plate, the right side wall of the positioning pin is provided with a thread groove, the thread groove is in threaded connection with a positioning nut, the positioning pin is arranged on the inner wall of the shifting fork through hole and is provided with a uniformly distributed guide mechanism, the guide mechanism comprises a smooth ball, the smooth ball is movably arranged on the annular outer wall of the positioning pin, the annular outer wall of the positioning pin is provided with a uniformly distributed limiting groove, smooth ball is located the spacing groove intracavity, and the arc top of smooth ball is located outside the spacing groove intracavity, and the activity runs through on the bottom wall that smooth ball is located the spacing groove intracavity has the gag lever post, and the gag lever post setting is at the spacing inslot, offers the dashpot with the mutual block in gag lever post both ends on the intracavity face of gag lever post.

Preferably, the first fixing bolts are uniformly distributed and penetrate through the threads on the fixing plate.

Preferably, the bottom wall surface of the case cover is provided with threaded holes corresponding to the first fixing bolts in position, and the fixing plate is connected with the case cover through the first fixing bolts.

Preferably, the positioning nut and the positioning plate are in threaded connection with second fixing bolts distributed in an annular array.

Preferably, the left side wall surface and the right side wall surface of the limiting plate are provided with screw holes corresponding to the second fixing bolts, and the positioning plate and the thread grooves are fixedly connected with the limiting plate through the second fixing bolts.

Preferably, the supporting spring is arranged at the bottom of the limiting groove in the cavity and is fixedly installed between the wall surface of the limiting rod and the wall surface of the bottom of the limiting groove in the cavity.

Advantageous effects

The utility model provides a car derailleur stationarity gearshift. The method has the following beneficial effects:

(1) this automotive transmission stationarity gearshift, through setting up guiding mechanism, the shift fork passes through the through-hole and can swings on the locating pin, thereby when shifting, the inner wall and the smooth ball of shift fork through-hole carry out extrusion contact, smooth ball's surface is smooth, when the shift fork swings on the locating pin, the inner wall and the smooth ball that just all has distributed of through-hole carry out extrusion contact, then improved the stationarity of shift fork motion, then corresponding improvement the stationarity of automotive transmission when shifting.

(2) This automobile transmission stationarity gearshift, the utility model discloses a set up supporting spring and gag lever post, when the inner wall of shift fork through-hole contacts with smooth ball extrusion, through supporting spring's supporting role for smooth ball has an elasticity to the shift fork and supports and the effect of buffering, then has improved the stability when the shift fork is shifted, reduces the vibrations of shifting of shift fork, then has improved the stationarity when automobile transmission shifts.

(3) This automobile transmission stationarity gearshift, the utility model discloses a locating pin pass through locating plate and set nut and limiting plate fixed connection, improved the stability of locating pin, stability when then having improved the shift fork swing has improved stability and stationarity when utility model derailleur shifts.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the point B in FIG. 2 according to the present invention;

FIG. 4 is a perspective view of the positioning pin of the present invention;

fig. 5 is an enlarged view of the point C in fig. 4 according to the present invention.

Illustration of the drawings:

1. a box cover; 11. a fixing plate; 12. a first fixing bolt; 13. a limiting plate; 14. positioning pins; 15. A shifting fork; 16. positioning a nut; 17. a second fixing bolt; 18. positioning a plate; 19. a thread groove; 2. a guide mechanism; 21. a smooth ball; 22. a limiting groove; 23. a limiting rod; 24. a buffer tank; 25. supporting the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): a stable gearshift mechanism of an automobile transmission is disclosed, as shown in FIG. 1-FIG. 5, comprising a box cover 1 and a shifting fork 15, wherein a fixed plate 11 is arranged on the inner wall of the bottom of the box cover 1, a limit plate 13 is fixedly arranged on the bottom wall of the fixed plate 11, first fixing bolts 12 are uniformly distributed and penetrate through the fixed plate 11, threaded holes corresponding to the positions of the first fixing bolts 12 are arranged on the bottom wall of the box cover 1, the fixed plate 11 is connected with the box cover 1 through the first fixing bolts 12, the limit plate 13 is in an inverted U shape, the shifting fork 15 is arranged in a groove of the limit plate 13, the forked end of the shifting fork 15 is arranged in an annular groove in the middle of a gear sliding sleeve, the shifting fork 15 and the gear sliding sleeve are both in the prior art, and will not be described herein again, the shifting fork 15 is provided with a through hole on the wall of the groove of the limit plate 13, a positioning pin 14 penetrates through the through hole on the shifting fork 15, a positioning plate 18 is fixedly arranged on the left side wall surface of the positioning pin 14, a thread groove 19 is arranged on the right side wall surface of the positioning pin 14, a positioning nut 16 is connected onto the thread groove 19 in a threaded manner, second fixing bolts 17 distributed in an annular array manner are connected onto the positioning nut 16 and the positioning plate 18 in a threaded manner, screw holes corresponding to the positions of the second fixing bolts 17 are arranged on the left side wall surface and the right side wall surface of the limiting plate 13, the positioning plate 18 and the thread groove 19 are fixedly connected with the limiting plate 13 through the second fixing bolts 17, uniformly distributed guide mechanisms 2 are arranged on the inner wall of the through hole of the shifting fork 15 of the positioning pin 14, each guide mechanism 2 comprises a smooth ball 21, the smooth ball 21 is movably arranged on the annular outer wall of the positioning pin 14, uniformly distributed limiting grooves 22 are arranged on the annular outer wall of the positioning pin 14, the smooth ball 21 is positioned in a limiting groove 22 cavity, and the arc top end of the smooth ball 21 is positioned outside the limiting groove 22 cavity, the smooth ball 21 is located the bottom wall in spacing groove 22 intracavity and has run through gag lever post 23 in the activity, and gag lever post 23 sets up in spacing groove 22, offers the dashpot 24 with the mutual block in gag lever post 23 both ends on the intracavity wall of spacing groove 22, and the intracavity bottom of spacing groove 22 is provided with supporting spring 25, and supporting spring 25 fixed mounting is between gag lever post 23 wall and the spacing groove 22 intracavity bottom wall.

The utility model discloses a theory of operation: when the shifting fork swings in the front-back direction in the limiting plate 13, the limiting plate 13 is connected with the shifting fork 15 through the positioning pin 14, the positioning pin 14 is fixedly connected with the limiting plate 13 through the positioning plate 18 and the positioning nut 16, the stability of the positioning pin 14 is improved, the stability when the shifting fork 15 swings is improved, the stability and the stability when the transmission of the utility model is shifted are improved, the shifting fork 15 can swing on the positioning pin 14 through the through hole by arranging the guide mechanism 2, so that when shifting is carried out, the inner wall of the through hole of the shifting fork 15 is in extrusion contact with the smooth ball 21, the surface of the smooth ball 21 is smooth, when the shifting fork 15 swings on the positioning pin 14, the inner wall of the through hole 5 is in extrusion contact with the smooth and evenly distributed smooth ball 21, the stability of the shifting fork 15 is improved, and the stability when the automobile transmission is correspondingly improved, the utility model discloses a set up supporting spring 25 and gag lever post 23, when the inner wall of shift fork 15 through-hole and smooth ball 21 extrusion contact, through supporting spring 25's supporting role for smooth ball 21 has an elasticity to shift fork 15 and supports and the effect of buffering, has then improved the stability when shift fork 15 shifts, reduces the vibrations of shifting of shift fork 15, has then improved the stationarity when automotive transmission shifts.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a automotive transmission stationarity gearshift, includes case lid (1) and shift fork (15), its characterized in that: the bottom inner wall of the box cover (1) is provided with a fixed plate (11), a limiting plate (13) is fixedly mounted on the bottom wall surface of the fixed plate (11), the limiting plate (13) is in an inverted U shape, a shifting fork (15) is arranged in a groove of the limiting plate (13), a through hole is formed in the groove wall surface of the shifting fork (15) which is positioned on the limiting plate (13), a positioning pin (14) penetrates through the limiting plate (13), the positioning pin (14) penetrates through the through hole in the shifting fork (15), a positioning plate (18) is fixedly mounted on the left side wall surface of the positioning pin (14), a thread groove (19) is formed in the right side wall surface of the positioning pin (14), a positioning nut (16) is connected to the thread groove (19) in a threaded manner, guide mechanisms (2) which are uniformly distributed are arranged on the inner wall of the through hole of the shifting fork (15) of the positioning pin (14), and the guide mechanisms (2) comprise smooth balls (21), the smooth ball (21) is movably arranged on the annular outer wall of the positioning pin (14).

2. A smooth shifting mechanism for an automotive transmission according to claim 1, wherein: the fixing plate (11) is provided with first fixing bolts (12) which are uniformly distributed in a penetrating mode through threads, the wall face of the bottom of the box cover (1) is provided with threaded holes corresponding to the first fixing bolts (12) in position, and the fixing plate (11) is connected with the box cover (1) through the first fixing bolts (12).

3. A smooth shifting mechanism for an automotive transmission according to claim 1, wherein: the positioning nut (16) and the positioning plate (18) are connected with second fixing bolts (17) which are distributed in an annular array in a threaded manner, screw holes corresponding to the second fixing bolts (17) in position are formed in the side wall surfaces of the left side and the right side of the limiting plate (13), and the positioning plate (18) and the thread groove (19) are fixedly connected with the limiting plate (13) through the second fixing bolts (17).

4. A smooth shifting mechanism for an automotive transmission according to claim 1, wherein: the limiting groove (22) which is uniformly distributed is formed in the annular outer wall of the positioning pin (14), the smooth ball (21) is located in the limiting groove (22) cavity, the arc top end of the smooth ball (21) is located outside the limiting groove (22) cavity, and the limiting rod (23) penetrates through the bottom wall surface of the smooth ball (21) located in the limiting groove (22) cavity in a movable mode.

5. A smooth gearshift mechanism for automotive transmissions according to claim 4, wherein: the limiting rod (23) is arranged in the limiting groove (22), and the inner wall surface of the cavity of the limiting groove (22) is provided with a buffer groove (24) which is clamped with the two ends of the limiting rod (23).

6. A smooth gearshift mechanism for automotive transmissions according to claim 4, wherein: and a supporting spring (25) is arranged at the bottom of the cavity of the limiting groove (22), and the supporting spring (25) is fixedly installed between the wall surface of the limiting rod (23) and the wall surface of the bottom of the cavity of the limiting groove (22).