Gearbox shifting fork capable of preventing gear skipping

Abstract

The utility model relates to the technical field of gearbox shifting forks, in particular to a gearbox shifting fork capable of preventing gear skipping. The gearbox shifting fork capable of preventing gear skipping comprises a shifting fork shaft, locking holes are evenly formed in the top of the shifting fork shaft, and a groove is formed in the locking bottom. According to the shifting fork shaft, after sliding gear shifting is completed through the shifting fork shaft, the second spring drives the ball to be inserted into the locking hole of the shifting fork shaft through the ball seat by means of the resilience force of the second spring, the ball is magnetically attracted through the first permanent magnet block, and therefore the stability of the ball in the locking hole of the shifting fork shaft is improved, and the shifting fork shaft has the stable gear jumping prevention effect; when the cross bolt is screwed in the threaded counter bore of the mounting frame, the first spring drives the round head bolt to be inserted into the positioning hole of the mounting frame, and the insertion stability of the round head bolt is improved through the magnetic attraction force of the second permanent magnet block, so that looseness of the cross bolt caused by shaking of an automobile is prevented, and the use reliability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox shifting fork technical field, specifically a kind of gearbox shifting fork of preventing skip. BACKGROUND

[0002] Shifting fork is important component in automobile gearbox, when gear shifting, shifting fork can push gear in gearbox to move on shifting fork shaft under the drive of gear lever, disengage the meshing relationship of original gear pair, establish new gear pair combination, so that the automobile runs on the transmission ratio gear position required.

[0003] And the shifting fork structure in prior art is relatively simple, it is usually limited by position using gear lever and the card slot structure on gearbox, when transmission gear encounters bumpy road or vibration, leading to unstable operation of gear, resulting in skip problem, and skip in high-speed driving process of automobile can seriously endanger driving safety, leading to danger, for the above situation, technical innovation is carried out on the basis of existing gearbox shifting fork. SUMMARY

[0004] The utility model aims at providing a kind of gearbox shifting fork to prevent skip, to solve the problem raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of gearbox shifting fork to prevent skip, comprising:

[0006] Shifting fork shaft, the top of the shifting fork shaft is uniformly provided with locking hole, the bottom of the locking is provided with recess, the first permanent magnet block is arranged in the recess, the top of the first permanent magnet block is flush with the bottom of locking hole, wherein: the outside of the shifting fork shaft is placed with support assembly, the inside of the support assembly is placed with locking assembly.

[0007] Preferably, the support assembly includes a mounting bracket, a through hole is uniformly formed in the right side of the mounting bracket, the shifting fork shaft is arranged in the through hole, a threaded hole is uniformly formed in the top of the mounting bracket, an installation hole is formed in the bottom of the threaded hole, the installation hole is in communication with the through hole, and a positioning hole is uniformly formed in the inner side wall of the threaded hole.

[0008] Preferably, the locking assembly includes a cross bolt, a pressing plate is arranged at the bottom of the cross bolt, a second spring is arranged at the bottom of the pressing plate, a ball seat is arranged at the bottom of the second spring, a ball is arranged in the inside of the ball seat, a sliding groove is uniformly formed in the outer side wall of the screw head of the cross bolt, a first spring is arranged in the sliding groove, a round head latch is arranged on the outer side wall of the first spring, a second permanent magnet block is inlaid in the round head part of the round head latch, and each component of the locking assembly is made of metal material.

[0009] The cross bolt is screwed with a threaded counterbore of the mounting frame, the pressing plate, the second spring and the ball seat are arranged in the mounting hole of the mounting frame.

[0010] Preferably, the ball is arranged in the locking hole of the shift fork shaft and is magnetically attracted by the first permanent magnet.

[0011] Preferably, the round head part of the round head bolt is inserted into the positioning hole of the mounting frame, and the second permanent magnet is magnetically attracted in the positioning hole.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] When the shift fork shaft is completed to slide and shift, the second spring drives the ball to be inserted into the locking hole of the shift fork shaft by the ball seat through the elastic force of the second spring, and the ball is magnetically attracted by the first permanent magnet, so that the stability of the ball in the locking hole of the shift fork shaft is improved, and the shift fork shaft has the stable anti-jumping effect.

[0014] When the cross bolt is screwed in the threaded counterbore of the mounting frame, the round head bolt is inserted into the positioning hole of the mounting frame by the first spring, and the insertion stability of the round head bolt is improved by the magnetic attraction force of the second permanent magnet, so that the loosening of the cross bolt caused by the shaking of the automobile is prevented, and the use reliability of the device is improved.

[0015] When the elastic force of the second spring is weakened, the cross bolt is unscrewed, the pressing plate is magnetically attracted by the magnetic rod, and then the locking assembly can be pulled out from the mounting frame by pulling the magnetic rod upwards, so that the effect of quick replacement of components is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the shift fork of the gearbox of the utility model;

[0017] Figure 2 It is a front view and partial sectional view of the shift fork of the gearbox of the utility model;

[0018] Figure 3 It is an enlarged view of A part of the utility model. Figure 2

[0019] In the drawing: 1, mounting frame; 11, shift fork shaft; 12, first permanent magnet; 13, ball; 14, cross bolt; 141, first spring; 142, round head bolt; 143, second permanent magnet; 15, pressing plate; 16, second spring; 17, ball seat. DETAILED DESCRIPTION

[0020] ​Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-3The application discloses a shift fork preventing skipping, which comprises a fork shaft 11, the top of the fork shaft 11 is uniformly provided with a locking hole, the bottom of the locking hole is provided with a groove, a first permanent magnet 12 is fixedly arranged in the groove, the top of the first permanent magnet 12 is flush with the bottom of the locking hole, wherein the outer side of the fork shaft 11 is provided with a supporting assembly, the supporting assembly is internally provided with a locking assembly, the supporting assembly comprises a mounting frame 1, the right side of the mounting frame 1 is uniformly provided with a through hole, the fork shaft 11 is slidingly arranged in the through hole, the top of the mounting frame 1 is uniformly provided with a threaded counterbore, the bottom of the threaded counterbore is provided with a mounting hole, the mounting hole is communicated with the through hole, the inner side wall of the threaded counterbore is uniformly provided with a positioning hole, the locking assembly comprises a cross bolt 14, the bottom of the cross bolt 14 is provided with a pressing plate 15, the bottom of the pressing plate 15 is fixedly provided with a second spring 16, the bottom of the second spring 16 is fixedly provided with a ball seat 17, the inner side of the ball seat 17 is rotatably provided with a ball 13, the outer side wall of the screw head of the cross bolt 14 is uniformly provided with a sliding groove, the sliding groove is fixedly provided with a first spring 141, the outer side wall of the first spring 141 is fixedly provided with a round head latch 142, the round head portion of the round head latch 142 is inlaid with a second permanent magnet 143, each component of the locking assembly is made of metal, the cross bolt 14 is screwed with the threaded counterbore of the mounting frame 1, the pressing plate 15, the second spring 16 and the ball seat 17 are slidingly arranged in the mounting hole of the mounting frame 1, the ball 13 is rollingly arranged in the locking hole of the fork shaft 11 and is magnetically attracted by the first permanent magnet 12, when the fork shaft 11 is slidingly shifted, the second spring 16 drives the ball 13 to be inserted into the locking hole of the fork shaft 11 by the ball seat 17 through the elastic force of the second spring 16, the ball 13 is magnetically attracted by the first permanent magnet 12, so that the stability of the ball 13 in the locking hole of the fork shaft 11 is improved, so that the fork shaft 11 has the stable skipping prevention effect, the round head portion of the round head latch 142 is inserted into the positioning hole of the mounting frame 1, the second permanent magnet 143 is magnetically attracted in the positioning hole, when the cross bolt 14 is screwed in the threaded counterbore of the mounting frame 1, the round head latch 142 is inserted into the positioning hole of the mounting frame 1 by the first spring 141, the insertion stability of the round head latch 142 is improved by the magnetic attraction force of the second permanent magnet 143, so that the cross bolt 14 is prevented from loosening due to the shaking of the automobile, and the use reliability of the device is improved, when the elastic force of the second spring 16 is weakened, the cross bolt 14 is unscrewed, the pressing plate 15 is magnetically attracted by the magnetic rod, then the locking assembly can be taken out from the mounting frame 1 by pulling the magnetic rod upwards, so that the effect of quick replacement of components is achieved.

[0022] Working principle: when the shift fork shaft 11 sliding shift is completed, the second spring 16 uses its own rebound force through the ball seat 17 to drive the ball 13 into the locking hole of the shift fork shaft 11, the ball 13 is magnetized by the first permanent magnet block 12, so as to improve the stability of the ball 13 in the locking hole of the shift fork shaft 11, so as to make the shift fork shaft 11 have stable anti-jumping effect, when the cross bolt 14 is screwed in the threaded hole of the mounting frame 1, the first spring 141 drives the round head pin 142 to insert into the positioning hole of the mounting frame 1, the second permanent magnet block 143 improves the stability of the round head pin 142 through the magnetic attraction, so as to prevent the cross bolt 14 from loosening due to the shaking of the car, and then improve the use reliability of the device, when the second spring 16 loses its elasticity, the cross bolt 14 is unscrewed, the magnetic rod magnetizes the pressing plate 15, then pulls the magnetic rod upwards, the locking assembly can be taken out from the mounting frame 1 for replacement, so as to achieve the effect of quick replacement of parts.

Claims

1. A gearbox shift fork to prevent gear skipping, characterized in that, include: The shift fork shaft (11) has a locking hole evenly opened at the top and a groove opened at the bottom of the locking hole. A first permanent magnet block (12) is provided in the groove. The top of the first permanent magnet block (12) is flush with the bottom of the locking hole. A support component is placed on the outside of the shift fork shaft (11), and a locking component is placed inside the support component.

2. The gearbox shift fork for preventing gear skipping according to claim 1, characterized in that: The support assembly includes a mounting bracket (1), with through holes evenly distributed on the right side of the mounting bracket (1), and the shift fork shaft (11) disposed in the through hole. Threaded countersunk holes are evenly distributed on the top of the mounting bracket (1), and mounting holes are distributed at the bottom of the threaded countersunk holes. The mounting holes are connected to the through holes, and positioning holes are evenly distributed on the inner sidewall of the threaded countersunk holes.

3. A gearbox shift fork for preventing gear skipping according to claim 2, characterized in that: The locking assembly includes a cross bolt (14), a pressure plate (15) is placed at the bottom of the cross bolt (14), a second spring (16) is provided at the bottom of the pressure plate (15), a ball bearing seat (17) is provided at the bottom of the second spring (16), a ball bearing seat (17) is provided inside the ball bearing seat (17), a sliding groove is evenly provided on the outer wall of the bolt head of the cross bolt (14), a first spring (141) is provided in the sliding groove, a round head pin (142) is provided on the outer wall of the first spring (141), and a second permanent magnet (143) is embedded in the round head part of the round head pin (142). All components of the locking assembly are made of metal.

4. A gearbox shift fork for preventing gear skipping according to claim 3, characterized in that: The cross bolt (14) is screwed into the countersunk hole of the mounting bracket (1), and the pressure plate (15), the second spring (16) and the ball bearing seat (17) are all set in the mounting hole of the mounting bracket (1).

5. A gearbox shift fork for preventing gear skipping according to claim 4, characterized in that: The ball (13) is rolled in the locking hole of the shift fork shaft (11) and is magnetically attracted by the first permanent magnet (12).

6. A gearbox shift fork for preventing gear skipping according to claim 5, characterized in that: The round head of the round head pin (142) is inserted into the positioning hole of the mounting bracket (1), and the second permanent magnet (143) is magnetically attracted to the positioning hole.

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