Speed change shifting fork assembly

Abstract

The utility model provides a speed change shifting fork assembly, and belongs to the technical field of gearboxes. The problem that in the prior art, a speed change shifting fork assembly lacks a buffering device is solved. The gear shifting device comprises a shifting fork shaft, a gear shifting fork and a buffering assembly, a connector is fixed to the bottom of the gear shifting fork, the connector is cylindrical and extends in the axial direction, a connecting sleeve is fixedly arranged on the outer surface of the shifting fork shaft in a sleeved mode, the connecting sleeve is arranged in the middle of the shifting fork shaft in a sleeved mode, and the connector is fixedly arranged on the outer surface of the connecting sleeve in a sleeved mode. A first end cover and a second end cover are attached and fixed to the two sides of the connecting sleeve respectively, the buffering assembly comprises a buffering spring and a spring seat, the shifting fork shaft is sleeved with the spring seat, and the shifting fork shaft is sleeved with the buffering spring which is fixed between the spring seat and the first end cover. The buffering device has the advantages of being good in buffering effect and stable in structure.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox technology and relates to a shift fork assembly. Background Technology

[0002] The shift fork assembly is a key component for enabling gear shifting. The shift fork is connected to the shift lever via a linkage or shift fork shaft. When the driver operates the shift lever, force is transmitted to the shift fork. In existing shift forks on the market, there is no damping device on the shift fork shaft.

[0003] Chinese patent publication number CN206398066U discloses a shift fork shaft for a transmission, comprising a main body, a shift block connected to the side wall of the main body, an opening at the end of the shift block, and a first inclined surface and a second inclined surface respectively on the side walls of the opening, arranged in parallel. A protrusion with its top surface coinciding with the bottom surface of the opening protrudes from the side wall of the shift block. A connecting block is provided on the side of the main body, and the shift block is connected to the connecting block. The top of the connecting block has several first insert pieces, and the bottom of the shift block has several second insert pieces that mate with the first insert pieces. The first insert pieces are fixedly connected to adjacent second insert pieces, and are welded to each other. The first and second insert pieces are fixed by at least one pin passing through them sequentially. However, this shift fork shaft for a transmission lacks a buffer device on the main body, making it prone to damage after prolonged use. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a gear shift fork assembly.

[0005] The objective of this utility model can be achieved through the following technical solution: A shift fork assembly includes a shift fork shaft, a shift fork, and a buffer assembly. A connector is fixed to the bottom of the shift fork. The connector is cylindrical and extends axially. A connecting sleeve is fitted and fixed to the outer surface of the shift fork shaft. The connecting sleeve is fitted to the middle of the shift fork shaft, and the connector is fitted and fixed to the outer surface of the connecting sleeve. A first end cap and a second end cap are respectively fitted and fixed to both sides of the connecting sleeve. The buffer assembly includes a buffer spring and a spring seat. The spring seat is fitted to the outer surface of the shift fork shaft, and the buffer spring is fitted to the outer surface of the shift fork shaft and fixed between the spring seat and the first end cap.

[0006] In the aforementioned gear shift fork assembly, the gear shift fork is fixed to the outside of one end of the connector, and a fixing seat is formed on the outside of one end of the connector.

[0007] In the aforementioned gear shift fork assembly, the connecting sleeve is provided with a first washer groove and a second washer groove, and the connector is installed between the first washer groove and the second washer groove. The first washer groove and the second washer groove are respectively provided with a first fixing washer and a second fixing washer. The first fixing washer is in contact with the fixing seat, and the second fixing washer is in contact with the other end of the connector.

[0008] In the aforementioned gear shift fork assembly, a third washer groove and a fourth washer groove are provided on the shift fork shaft. A third fixing washer and a fourth fixing washer are respectively fixed in the third washer groove and the fourth fixing washer, and the third fixing washer and the fourth fixing washer are respectively attached to one end of the spring seat and the second end cover.

[0009] Compared with the prior art, the shift fork assembly provided by this utility model has the following beneficial effects: by setting the buffer assembly, the spring seat is installed on the shift fork shaft, and the buffer spring is sleeved on the shift fork shaft, which effectively buffers and protects the shift fork shaft and makes the gearbox shifting smoother; by setting several washer grooves on the connecting sleeve and the shift fork shaft, and installing fixing washers in the washer grooves, the stability of this utility model is effectively guaranteed. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0012] In the diagram: 1. Shift fork shaft; 11. Third washer groove; 12. Fourth washer groove; 2. Shift fork; 21. Connector; 22. Fixing seat; 3. Buffer assembly; 31. Buffer spring; 32. Spring seat; 4. Connecting sleeve; 41. First end cap; 42. Second end cap; 43. First washer groove; 44. Second washer groove; 5. First fixing washer; 6. Second fixing washer; 7. Third fixing washer; 8. Fourth fixing washer. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figures 1 to 2As shown, this embodiment includes a shift fork shaft 1, a shift fork 2, a buffer assembly 3, and a connecting sleeve 4. The bottom of the shift fork 2 is fixed with a connector 21 by welding. Specifically, the shift fork 2 and the connector 21 are welded to the outer surface of the end near the first end cap 41, and a fixing seat 22 is formed at the end of the connector 21 near the first end cap 41. The connector 21 is cylindrical and extends axially. The connecting sleeve 4 is sleeved in the middle of the shift fork shaft 1. The connecting sleeve 4 passes through the inside of the connector 21 and is connected to the connector 21. The first end cap 41 and the second end cap 42 are respectively fitted and fixed to both sides of the connecting sleeve 4. The buffer assembly 3 includes a buffer spring 31 and a spring seat 32. The spring seat 32 is sleeved on the outer surface of the shift fork shaft 1. The buffer spring 31 is sleeved on the outer surface of the shift fork shaft 1 and is fixed between the spring seat and the first end cap 41. The two ends of the buffer spring 31 are respectively connected to the spring seat 32 and the first end cap 41.

[0015] To elaborate further, such as Figures 1 to 2 As shown, the connecting sleeve 4 has a first washer groove 43 and a second washer groove 44. The connector 21 is installed between the first washer groove 43 and the second washer groove 44, and both ends of the connector 21 are respectively in contact with the inner side of the first washer groove 43 and the second washer groove 44. The first fixing washer 5 and the second fixing washer 6 are respectively installed in the first washer groove 43 and the second washer groove 44. The first fixing washer 5 is in contact with the fixing seat 22, and the second fixing washer 6 is in contact with the other end of the connector 21. The first fixing washer 5 and the second fixing washer 6 effectively ensure the stability of the connector 21 and the shift fork 2.

[0016] To elaborate further, such as Figures 1 to 2 As shown, the shift fork shaft 1 is provided with a third washer groove 11 and a fourth washer groove 12. The third washer groove 11 and the fourth washer groove 12 are located on the outer side of the spring seat 32 and the second end cover 42, respectively. The third fixing washer 7 and the fourth fixing washer 8 are respectively installed in the third washer groove 11 and the fourth washer groove 12. The third fixing washer 7 and the fourth fixing washer 8 are respectively in contact with the outer ends of the spring seat 32 and the second end cover 42. The third fixing washer 7 and the fourth fixing washer 8 effectively ensure the stability of the buffer assembly 3 and the connecting sleeve 4.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A shift fork (2) assembly, comprising a shift fork shaft (1), a shift fork (2), and a buffer assembly (3), characterized in that: The bottom of the shift fork (2) is fixed with a connector (21), which is cylindrical and extends axially. A connecting sleeve (4) is fixedly fitted on the outer surface of the shift fork shaft (1). The connecting sleeve (4) is fitted in the middle of the shift fork shaft (1) and the connector (21) is fitted and fixed on the outer surface of the connecting sleeve (4). A first end cap (41) and a second end cap (42) are respectively attached and fixed on both sides of the connecting sleeve (4). The buffer assembly (3) includes a buffer spring (31) and a spring seat (32). The spring seat (32) is fitted on the outer surface of the shift fork shaft (1). The buffer spring (31) is fitted on the outer surface of the shift fork shaft (1) and the buffer spring (31) is fixed between the spring base and the first end cap (41).

2. The gear shift fork (2) assembly according to claim 1, characterized in that: The shift fork (2) is fixed to one end of the connector (21), and a fixing seat (22) is formed on the outer side of one end of the connector (21).

3. The shift fork (2) assembly according to claim 2, characterized in that: The connecting sleeve (4) is provided with a first washer groove (43) and a second washer groove (44) respectively. The connector (21) is installed between the first washer groove (43) and the second washer groove (44). A first fixing washer (5) and a second fixing washer (6) are respectively provided in the first washer groove (43) and the second washer groove (44). The first fixing washer (5) is in contact with the fixing seat (22), and the second fixing washer (6) is in contact with the other end of the connector (21).

4. The gear shift fork (2) assembly according to claim 1, characterized in that: The shift fork shaft (1) is provided with a third washer groove (11) and a fourth washer groove (12). A third fixing washer (7) and a fourth fixing washer (8) are fixed in the third washer groove (11) and the fourth washer groove (12), respectively. The third fixing washer (7) and the fourth fixing washer (8) are respectively attached to one end of the spring seat (32) and the second end cap (42).

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