Anti-deformation high-strength automobile transmission shifting fork

Abstract

The utility model relates to the technical field of gearbox shifting forks, and discloses an anti-deformation high-strength automobile gearbox shifting fork which is composed of a shifting fork body, a connecting arm and a supporting arm and is characterized in that an anti-deformation mechanism and a fork head split mechanism are arranged, in the anti-deformation mechanism, an elastic lining, a buffering protruding block and a strengthening inner cylinder in a shaft hole cooperate to protect the shifting fork, and therefore the anti-deformation high-strength automobile gearbox shifting fork is formed. The fracture or deformation after long-time use is prevented; the buffer inner cylinder guarantees the use effect of the mounting hole, the reinforcing gasket reduces abrasion between the elastic lining and the mounting hole, and the service life of the shifting fork is prolonged; the fork head split type mechanism is of a split type design, a supporting arm and a split type fork head are connected through a connecting bolt, the abraded fork head is convenient to replace, the maintenance cost is reduced, the size and shape of the fork head are adjusted according to the working condition, and the universality of the shifting fork is improved; the problems that an existing shifting fork is prone to fracture deformation, high in maintenance cost, poor in universality and the like are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of gearbox shift fork technology, specifically a high-strength automotive gearbox shift fork that is resistant to deformation. Background Technology

[0002] As a key component of a car's transmission, the shift fork plays a crucial role. It is closely connected to the gear lever and is located at the lower end of the lever. During gear shifting while the vehicle is in motion, the shift fork can precisely move the intermediate gear wheel, thereby adjusting the input and output speed ratio by changing the meshing state of the gears. It is mainly used for clutch shifting to ensure smooth gear changes in the vehicle.

[0003] Existing automotive transmission shift forks have significant shortcomings: they are prone to breakage or deformation after prolonged use; the mounting holes lack effective protection, resulting in poor performance; the elastic liner is in direct contact with the mounting holes, leading to significant wear and shortening the service life; under high-load conditions, stress concentration is severe, deformation resistance is weak, and structural reliability is poor. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength, deformation-resistant automotive gearbox shift fork to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-strength, deformation-resistant automotive gearbox shift fork, comprising a shift fork body, a connecting arm fixedly connected to the bottom of the shift fork body, support arms fixedly connected to the left and right ends of the bottom of the connecting arm, an anti-deformation mechanism provided on the surface of the shift fork body, and a fork head split mechanism provided on the surface of the support arm.

[0006] The anti-deformation mechanism includes a shaft hole formed on the surface of the shift fork body. An elastic liner is installed inside the shaft hole, and a buffer protrusion is fixedly connected to the outer surface of the elastic liner. A reinforcing inner cylinder is installed inside the elastic liner. A mounting hole is formed at the bottom front end of the shaft hole, and the buffer inner cylinder is inserted into the mounting hole. A reinforcing pad is fixedly connected to the top of the buffer inner cylinder. A hemispherical stress-dispersing protrusion is fixedly connected to the surface of the connecting arm, and a reinforcing wear-resistant pad is provided at the bottom end of the connecting arm. During use, the shift fork can be pulled apart through the elastic liner, buffer protrusion, and reinforcing inner cylinder inside the shaft hole. The fork acts as a protective layer, preventing breakage or deformation of the shift fork during prolonged use. The buffer inner cylinder ensures the effectiveness of the mounting hole. The reinforced gasket and elastic liner prevent direct contact between the elastic liner and the mounting hole, further reducing wear and thus improving the overall service life of the shift fork. The hemispherical stress-dispersing protrusions alter the stress propagation path, dispersing concentrated stress and effectively mitigating stress concentration. This enhances the shift fork's resistance to deformation under high load conditions and improves the overall structural reliability of the shift fork.

[0007] Preferably, the top of the reinforcing pad is in contact with the end of the elastic inner substrate, and hemispherical stress-dispersing protrusions are fixedly connected to both the front and back of the connecting arm.

[0008] Preferably, the buffer protrusions are evenly distributed on the outer surface of the elastic liner, and the hemispherical stress-dispersing protrusions are evenly distributed on the surface of the connecting arm.

[0009] Preferably, the reinforced wear-resistant pad is made of tungsten carbide coated material, and the reinforced inner cylinder is made of high-strength alloy steel.

[0010] Preferably, the split fork mechanism includes a plug block, which is fixedly connected to the inner end of the support arm. The plug block has a first connection hole on its surface, and a split fork is provided at the outer end of the plug block. The split fork has a slot at its outer end, and a reinforcing inner plate is fixedly connected inside the split fork. The reinforcing inner plate has a second connection hole on its surface, and a sealing cap is provided on the surface of the split fork. Connecting bolts are provided inside the first and second connection holes. The support arm and split fork of this shift fork use a split design and are connected by connecting bolts. This facilitates the replacement of worn split forks, reduces maintenance costs, and improves the wear resistance and deformation resistance of the fork. At the same time, the split structure allows for flexible adjustment of the size and shape of the fork according to different working conditions, improving the versatility of the shift fork.

[0011] Preferably, the insert is inserted into the slot, and the insert and the split fork head are connected together by a connecting bolt.

[0012] Compared with the prior art, this utility model provides a high-strength, deformation-resistant automotive gearbox shift fork, which has the following advantages:

[0013] This high-strength, deformation-resistant automotive gearbox shift fork is equipped with an anti-deformation mechanism. During use, the elastic inner liner, buffer protrusions, and reinforced inner cylinder inside the shaft hole protect the shift fork, preventing breakage or deformation during prolonged use. The buffer inner cylinder ensures the effectiveness of the mounting hole. The reinforced shim contacts the elastic inner liner to prevent direct contact between the elastic inner liner and the mounting hole, further reducing wear between them and improving the overall service life of the shift fork. The hemispherical stress-dispersing protrusions alter the stress propagation path, dispersing concentrated stress and effectively alleviating stress concentration. This enhances the shift fork's resistance to deformation under high load conditions and improves the overall structural reliability of the shift fork.

[0014] This high-strength, deformation-resistant automotive gearbox shift fork features a split-type fork head mechanism. The fork's support arm and split-type fork head are designed separately and connected by a connecting bolt. This design facilitates the replacement of worn split-type fork heads, reducing maintenance costs, and improves the wear resistance and deformation resistance of the fork heads. Furthermore, the split structure allows for flexible adjustment of the fork head's size and shape according to different working conditions, enhancing the shift fork's versatility. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the anti-deformation mechanism of the present invention;

[0018] Figure 3 This is a schematic diagram of the hemispherical stress dispersion protrusion of the present invention.

[0019] Figure 4 This is a schematic diagram of the fork-head split mechanism of this utility model.

[0020] In the diagram: 1. Shift fork body; 2. Connecting arm; 3. Support arm; 4. Anti-deformation mechanism; 41. Shaft hole; 42. Elastic inner liner; 43. Buffer protrusion; 44. Reinforced inner cylinder; 45. Mounting hole; 46. Buffer inner cylinder; 47. Reinforcing gasket; 48. Hemispherical stress dispersion protrusion; 49. Reinforced wear-resistant gasket; 5. Split fork head mechanism; 51. Insert block; 52. Connecting hole one; 53. Split fork head; 54. Slot; 55. Reinforced inner plate; 56. Connecting hole two; 57. Sealing cap; 58. Connecting bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] This utility model provides the following technical solution:

[0024] Example 1

[0025] Please see Figure 1-4 A high-strength, deformation-resistant automotive gearbox shift fork includes a shift fork body 1, a connecting arm 2 fixedly connected to the bottom of the shift fork body 1, support arms 3 fixedly connected to the left and right ends of the bottom of the connecting arm 2, an anti-deformation mechanism 4 provided on the surface of the shift fork body 1, and a fork head split mechanism 5 provided on the surface of the support arm 3.

[0026] The anti-deformation mechanism 4 includes a shaft hole 41, which is formed on the surface of the shift fork body 1. An elastic inner liner 42 is installed inside the shaft hole 41. A buffer protrusion 43 is fixedly connected to the outer surface of the elastic inner liner 42. A reinforced inner cylinder 44 is installed inside the elastic inner liner 42. A mounting hole 45 is formed at the bottom front end of the shaft hole 41. A buffer inner cylinder 46 is inserted into the mounting hole 45. A reinforced shim 47 is fixedly connected to the top of the buffer inner cylinder 46. A hemispherical stress-dispersing protrusion 48 is fixedly connected to the surface of the connecting arm 2. A reinforced wear-resistant shim 49 is provided at the bottom end of the connecting arm 2. During the use of the shift fork, the elastic inner liner 42, the buffer protrusion 43, and the reinforced inner cylinder 44 inside the shaft hole 41 can be used to prevent deformation. The four sides of the shift fork provide protection, preventing breakage or deformation during prolonged use. The buffer inner cylinder 46 ensures the effectiveness of the mounting hole 45. The reinforcing shim 47 contacts the elastic liner 42 to prevent direct contact between the elastic liner 42 and the mounting hole 45, further reducing wear between them and improving the overall service life of the shift fork. The hemispherical stress dispersion protrusion 48 changes the stress propagation path, dispersing concentrated stress to the surrounding area, effectively alleviating stress concentration, improving the shift fork's resistance to deformation under high load conditions, and enhancing the overall structural reliability of the shift fork.

[0027] The top of the reinforcing pad 47 contacts the bottom of the elastic liner 42, and the front and back of the connecting arm 2 are fixedly connected with hemispherical stress dispersion protrusions 48.

[0028] Buffer protrusions 43 are evenly distributed on the outer surface of elastic liner 42, and hemispherical stress dispersion protrusions 48 are evenly distributed on the surface of connecting arm 2.

[0029] The reinforced wear-resistant gasket 49 is made of tungsten carbide coated material, and the reinforced inner cylinder 44 is made of high-strength alloy steel.

[0030] Example 2

[0031] Please see Figure 1-4Based on Embodiment 1, a split fork mechanism 5 is further obtained, including a plug block 51, which is fixedly connected to the inner end of the support arm 3. A first connection hole 52 is provided on the surface of the plug block 51, and a split fork head 53 is provided on the outer end of the plug block 51. A slot 54 is provided on the outer end of the split fork head 53, and a reinforcing inner plate 55 is fixedly connected inside the split fork head 53. A second connection hole 56 is provided on the surface of the reinforcing inner plate 55, and a sealing cover 57 is provided on the surface of the split fork head 53. A connecting bolt 58 is provided inside the first connection hole 52 and the second connection hole 56. The support arm 3 and the split fork head 53 of this fork adopt a split design and are connected by the connecting bolt 58. This not only facilitates the replacement of worn split fork heads 53 and reduces maintenance costs, but also improves the wear resistance and deformation resistance of the fork head. At the same time, the split structure can flexibly adjust the size and shape of the fork head according to different working conditions, thereby improving the versatility of the fork.

[0032] The insert 51 is inserted into the slot 54, and the insert 51 and the split fork head 53 are connected together by the connecting bolt 58.

[0033] In actual operation, when this device is used, the shift fork is installed in a suitable position on the gearbox. During the use of the shift fork, the elastic inner liner 42, the buffer protrusion 43, and the reinforced inner cylinder 44 inside the shaft hole 41 protect the shift fork and prevent it from breaking or deforming during long-term use. The buffer inner cylinder 46 ensures the effectiveness of the mounting hole 45. The reinforcing shim 47 contacts the elastic inner liner 42 to prevent direct contact between the elastic inner liner 42 and the mounting hole 45, further reducing wear between the elastic inner liner 42 and the mounting hole 45, thereby improving the overall service life and lifespan of the shift fork. The hemispherical stress dispersion protrusion... The 48 setting is designed to change the stress propagation path, dispersing concentrated stress to the surrounding area, effectively alleviating stress concentration, improving the shift fork's resistance to deformation under high load conditions, and enhancing the overall structural reliability of the shift fork. The hemispherical stress dispersion protrusion 48 is relatively small, and with reasonable size and layout design, it occupies a small amount of material, and its negative impact on the overall quality and structural strength of the shift fork is negligible. It can effectively alleviate stress concentration, reduce the risk of fatigue crack initiation and propagation caused by stress concentration, thereby improving the shift fork's resistance to deformation under high load conditions, ensuring the structural integrity of the shift fork, and enhancing its long-term reliability.

[0034] The fork's support arm 3 and split fork head 53 are designed separately and connected by a connecting bolt 58. This facilitates the replacement of worn split fork heads 53, reduces maintenance costs, and improves the fork head's wear resistance and deformation resistance. At the same time, the split structure allows for flexible adjustment of the fork head's size and shape according to different working conditions, improving the fork's versatility.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A high-strength, deformation-resistant automotive gearbox shift fork, comprising a shift fork body (1), characterized in that: The bottom of the fork body (1) is fixedly connected to a connecting arm (2), and the bottom left and right ends of the connecting arm (2) are fixedly connected to support arms (3). The surface of the fork body (1) is provided with an anti-deformation mechanism (4), and the surface of the support arm (3) is provided with a fork head split mechanism (5). The anti-deformation mechanism (4) includes a shaft hole (41), which is opened on the surface of the fork body (1). An elastic inner liner (42) is installed inside the shaft hole (41). A buffer protrusion (43) is fixedly connected to the outer surface of the elastic inner liner (42). A reinforced inner cylinder (44) is installed inside the elastic inner liner (42). An installation hole (45) is opened at the bottom front end of the shaft hole (41). A buffer inner cylinder (46) is inserted into the installation hole (45). A reinforcing pad (47) is fixedly connected to the top of the buffer inner cylinder (46). A hemispherical stress dispersion protrusion (48) is fixedly connected to the surface of the connecting arm (2). A reinforced wear-resistant pad (49) is provided at the bottom end of the connecting arm (2).

2. The high-strength, deformation-resistant automotive gearbox shift fork according to claim 1, characterized in that: The top of the reinforcing pad (47) is in contact with the bottom of the elastic liner (42), and the front and back of the connecting arm (2) are fixedly connected with hemispherical stress dispersion protrusions (48).

3. The high-strength, deformation-resistant automotive gearbox shift fork according to claim 1, characterized in that: The buffer protrusions (43) are evenly distributed on the outer surface of the elastic liner (42), and the hemispherical stress dispersion protrusions (48) are evenly distributed on the surface of the connecting arm (2).

4. The high-strength, deformation-resistant automotive gearbox shift fork according to claim 1, characterized in that: The reinforced wear-resistant pad (49) is made of tungsten carbide coating material, and the reinforced inner cylinder (44) is made of high-strength alloy steel.

5. A high-strength, deformation-resistant automotive gearbox shift fork according to claim 1, characterized in that: The split fork mechanism (5) includes a plug (51), which is fixedly connected to the inner end of the support arm (3). A first connection hole (52) is provided on the surface of the plug (51). A split fork (53) is provided on the outer end of the plug (51). A slot (54) is provided on the outer end of the split fork (53). A reinforcing inner plate (55) is fixedly connected inside the split fork (53). A second connection hole (56) is provided on the surface of the reinforcing inner plate (55). A sealing cap (57) is provided on the surface of the split fork (53). A connecting bolt (58) is provided inside the first connection hole (52) and the second connection hole (56).

6. The high-strength, deformation-resistant automotive gearbox shift fork according to claim 5, characterized in that: The insert (51) is inserted into the slot (54), and the insert (51) and the split fork head (53) are connected together by a connecting bolt (58).

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