CN210600142U

CN210600142U - Shifting fork

Info

Publication number: CN210600142U
Application number: CN201921278793.8U
Authority: CN
Inventors: 刘占向; 孙坤; 王宝千
Original assignee: Qingdao Qili Steel Casting Co ltd
Current assignee: Qingdao Qili Steel Casting Co ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-05-22
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a shift fork of shifting, including fork axle and sleeve, the sleeve cup joints on the fork axle, be equipped with the hemispherical recess of a plurality of on the fork axle, be equipped with the columniform boss on the sleeve, the middle part of boss is equipped with the screw hole, the spiro union has the sleeve pipe in the screw hole, sheathed tube inner chamber sliding connection has the columniform slider, the lower extreme fixedly connected with guide arm of slider, the lower extreme welding of guide arm has the steel ball, steel ball and recess phase-match joint, the spring has been cup jointed on the guide arm. The utility model discloses in the recess is gone into to spring promotion steel ball pushing down card after the installation, fix the sleeve, the restriction sleeve slides or rotates, and the diameter of steel ball is far less than the diameter of screw hole, so when dismantling, can not blocked.

Description

Shifting fork

Technical Field

The utility model relates to the field of automotive technology, specifically a shift fork shifts.

Background

The automobile transmission realizes transmission by using different gear pairs through gear shifting, obtains different speed ratios to output proper torque and rotating speed to transmit power, and meets the requirements of automobiles on traction and running speed under different road conditions. The shift fork of need shifting shifts, and the design of the shift fork of shifting not only can shift reliably for the derailleur to it is light to shift, more involves the smooth and easy operability of shifting, the inspiration of entering the shelves and feels, is difficult for jumping the shelves. The existing shifting fork utilizes a spring to jack the steel ball into the groove for positioning and mounting, the gap between the steel ball and the slide way of the steel ball is small, the steel ball is easy to clamp, and the steel ball cannot be detached.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shift fork of shifting to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a shift fork of shifting, includes fork axle and sleeve, the sleeve cup joints on the fork axle, be equipped with the hemispherical recess of a plurality of on the fork axle, be equipped with columniform boss on the sleeve, the middle part of boss is equipped with the screw hole, the spiro union has the sleeve pipe in the screw hole, sheathed tube inner chamber sliding connection has columniform slider, the lower extreme fixedly connected with guide arm of slider, the lower extreme welding of guide arm has the steel ball, steel ball and recess phase-match joint, the spring has been cup jointed on the guide arm.

Preferably, the sleeve is in clearance fit with the fork shaft, a fork frame is welded on the upper side of the sleeve, and a rectangular notch is formed in the fork frame.

Preferably, the outside of sleeve pipe is equipped with the external screw thread, sheathed tube upper end welding has the hexagonal nut, the screw hole extends to telescopic inner chamber.

Preferably, fork claws are arranged on two sides of the sleeve, a bottom plate is arranged at the lower end of the sleeve, and the guide rod penetrates through the bottom plate and is in sliding connection with the bottom plate.

Preferably, the upper end of the spring is fixedly connected with the bottom of the sleeve, and the lower end of the spring abuts against the spherical surface of the steel ball.

Preferably, the sleeve and the boss are integrally cast and formed, and the diameter of the threaded hole is 10-15 mm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses in the recess is gone into to spring promotion steel ball pushing down card after the installation, fix the sleeve, the restriction sleeve slides or rotates, and the diameter of steel ball is far less than the diameter of screw hole, so when dismantling, can not blocked, and guide arm and slider play direction limiting displacement to the removal of steel ball, are favorable to keeping the stability that the steel ball reciprocated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a fork shaft; 2. a sleeve; 3. a fork claw; 4. a fork; 5. a boss; 6. a threaded hole; 7. a nut; 8. steel balls; 9. a spring; 10. a guide bar; 11. a groove; 12. a notch; 13. a sleeve; 14. a slide block.

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.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a shift fork of shifting, includes fork shaft 1 and sleeve 2, sleeve 2 cup joints on fork shaft 1, be equipped with the hemispherical recess 11 of a plurality of on fork shaft 1, be equipped with columniform boss 5 on sleeve 2, the middle part of boss 5 is equipped with screw hole 6, the spiro union has sleeve pipe 13 in the screw hole 6, the inner chamber lateral wall of sleeve pipe 13 is smooth, sleeve pipe 13's inner chamber sliding connection has columniform slider 14, slider 14 and sleeve pipe 13's inner chamber clearance fit, slider 14's lower extreme fixedly connected with guide arm 10, the lower extreme welding of guide arm 10 has steel ball 8, steel ball 8 and recess 11 phase-match joint, recess 11 block the latter half of steel ball 8, spring 9 has been cup jointed on the guide arm 10.

Specifically, the sleeve 2 is in clearance fit with the fork shaft 1, the fork frame 4 is welded on the upper side of the sleeve 2, and the fork frame 4 is provided with a rectangular notch 12.

Specifically, the outer portion of the sleeve 13 is provided with external threads, the upper end of the sleeve 13 is welded with a hexagonal nut 7, the threaded hole 6 extends to the inner cavity of the sleeve 2, and the nut 7 is screwed by a wrench, so that the sleeve 13 can be screwed in or out.

Specifically, fork claws 3 are arranged on two sides of the sleeve 2, the fork claws 3 clamp a gear of the gearbox, the gear is stirred to move to realize speed change, a bottom plate is arranged at the lower end of the sleeve 13, the guide rod 10 penetrates through the bottom plate and is in sliding connection with the bottom plate, and the guide rod 10 plays a role in guiding the up-and-down movement of the steel ball 8.

Specifically, the upper end of the spring 9 is fixedly connected with the bottom of the sleeve 13, the lower end of the spring 9 abuts against the spherical surface of the steel ball 8, and the spring 9 pushes the steel ball 8 to move downwards to be clamped in the groove 11, so that the sleeve 2 is fixed.

Specifically,

sleeve

2 and 5 integrative casting of boss are formed, the diameter of screw hole 6 is 10 ~ 15 mm.

The working principle is as follows: the fork shaft 1 is provided with a plurality of grooves 11, steel balls 8 are clamped into one of the grooves as required, the spring 9 pushes the steel balls 8 to press down and clamp the steel balls into the grooves 11 after installation, the sleeve 2 is fixed, the sleeve 2 is limited to slide or rotate, the diameter of each steel ball 8 is far smaller than that of the threaded hole 6, and therefore the steel balls cannot be clamped when being detached, the guide rod 10 and the sliding block 14 play a role in guiding the movement of the steel balls 8, and the steel balls 8 are prevented from being deviated.

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

1. A shift fork of shifting, includes fork axle (1) and sleeve (2), its characterized in that: sleeve (2) cup joints on fork axle (1), be equipped with hemispherical recess (11) of a plurality of on fork axle (1), be equipped with columniform boss (5) on sleeve (2), the middle part of boss (5) is equipped with screw hole (6), the spiro union has sleeve pipe (13) in screw hole (6), the inner chamber sliding connection of sleeve pipe (13) has columniform slider (14), the lower extreme fixedly connected with guide arm (10) of slider (14), the lower extreme welding of guide arm (10) has steel ball (8), steel ball (8) and recess (11) phase-match joint, spring (9) have been cup jointed on guide arm (10).

2. A shift fork according to claim 1, wherein: the sleeve (2) is in clearance fit with the fork shaft (1), the fork frame (4) is welded on the upper side of the sleeve (2), and a rectangular notch (12) is formed in the fork frame (4).

3. A shift fork according to claim 1, wherein: the outside of sleeve pipe (13) is equipped with the external screw thread, the upper end welding of sleeve pipe (13) has hexagonal nut (7), screw hole (6) extend to the inner chamber of sleeve (2).

4. A shift fork according to claim 1, wherein: fork claws (3) are arranged on two sides of the sleeve (2), a bottom plate is arranged at the lower end of the sleeve (13), and the guide rod (10) penetrates through the bottom plate and is in sliding connection with the bottom plate.

5. A shift fork according to claim 1, wherein: the upper end of the spring (9) is fixedly connected with the bottom of the sleeve (13), and the lower end of the spring (9) abuts against the spherical surface of the steel ball (8).

6. A shift fork according to claim 1, wherein: the sleeve (2) and the boss (5) are integrally cast and formed, and the diameter of the threaded hole (6) is 10-15 mm.