Manual transmission gear shifting structure

Abstract

The invention discloses a manual transmission shift structure, wherein the first buffer pad is fixedly connected to the shift arm, the second buffer pad is fixedly connected to the shift arm and is located at one end of the shift arm away from the first buffer pad, one end of the connecting pin is fixedly connected to the gasket, and a first gap is formed between the gasket and the second buffer pad, the other end of the connecting pin sequentially passes through the first buffer pad, the shift arm and the second buffer pad, and is gap-matched with the first buffer pad, the shift arm and the second buffer pad, and a second gap is formed between the outer wall of the connecting pin and the inner wall of the first buffer pad, the shift arm and the second buffer pad. The vibration transmitted by the shift arm is reduced to the greatest extent, the vibration is small, and the riding comfort of the whole vehicle is good.

Description

Technical Field

[0001] The invention relates to a vehicle gearbox, and in particular to a manual gearbox shifting structure. Background Art

[0002] The gearbox is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio of the output shaft and the input shaft in a fixed or step-by-step manner, and is an important part of the automobile transmission system. However, the gearbox will inevitably generate vibration during operation, which is transmitted to the shift arm through the transmission case and the shift mechanism and finally transmitted to the shifter handle through the vehicle cable. When the vibration is too large, the ride comfort of the entire vehicle is poor. Summary of the invention

[0003] The technical problem to be solved by the invention is to provide a manual transmission shift structure with less vibration and better vehicle riding comfort.

[0004] In order to solve the above technical problems, a manual transmission shift structure is invented, including a shift arm, a first buffer pad, a second buffer pad, a connecting pin and a gasket, the first buffer pad is fixedly connected to the shift arm, the second buffer pad is fixedly connected to the shift arm and is located at an end of the shift arm away from the first buffer pad, one end of the connecting pin is fixedly connected to the gasket, and a first gap is formed between the gasket and the second buffer pad, the other end of the connecting pin passes through the first buffer pad, the shift arm and the second buffer pad in sequence, and is gap-matched with the first buffer pad, the shift arm and the second buffer pad, and a second gap is formed between the outer wall of the connecting pin and the inner wall of the first buffer pad, the shift arm and the second buffer pad.

[0005] Among them, the shift arm includes a connecting portion, a first extension portion, a first bent portion and a second extension portion, the connecting portion has a mounting hole, the first extension portion is fixedly connected to the connecting portion, the first bent portion is fixedly connected to the first extension portion and is located at an end of the first extension portion away from the connecting portion, the second extension portion is fixedly connected to the first bent portion and is located at an end of the first bent portion away from the first extension portion, and the second extension portion is loosely matched with the connecting pin, and a Z-shaped structure is formed between the first extension portion, the first bent portion and the second extension portion.

[0006] Wherein, the shift arm further comprises a sleeve body, the sleeve body is fixedly connected to the connecting portion and is located inside the mounting hole.

[0007] Wherein, the inner side wall of the sleeve body is provided with a through hole.

[0008] Among them, the shift arm also includes a third extension portion, a second bending portion and a fourth extension portion, the third extension portion is fixedly connected to the connecting portion, the second bending portion is fixedly connected to the third extension portion and is located at an end of the third extension portion away from the connecting portion, the fourth extension portion is fixedly connected to the second bending portion and is located at an end of the second bending portion away from the third extension portion, and a Z-shaped structure is formed between the third extension portion, the second bending portion and the fourth extension portion.

[0009] Wherein, an angle is formed between the first extension portion and the third extension portion, and the angle is 30° to 60°.

[0010] Wherein, the shift arm further includes an arm pin, which is riveted to the fourth extension portion and is located at an end of the fourth extension portion away from the second bending portion.

[0011] Wherein, the shift arm further includes a reinforcement pad, which is fixedly connected to the fourth extension portion and is located between the fourth extension portion and the arm pin.

[0012] Wherein, the structure for reducing manual transmission shift vibration further includes a counterweight block, which is fixedly connected to the connecting pin and is located at an end of the connecting pin away from the gasket.

[0013] Wherein, the connecting pin is provided with a limiting portion, and the limiting portion and the counterweight block are mutually supported.

[0014] The invention discloses a manual transmission shift structure, wherein the first buffer pad is fixedly connected to the shift arm, the second buffer pad is fixedly connected to the shift arm and is located at an end of the shift arm away from the first buffer pad, one end of the connecting pin is fixedly connected to the gasket, and a first gap is formed between the gasket and the second buffer pad, the other end of the connecting pin passes through the first buffer pad, the shift arm and the second buffer pad in sequence, and is gap-matched with the first buffer pad, the shift arm and the second buffer pad, and a second gap is formed between the outer wall of the connecting pin and the inner wall of the first buffer pad, the shift arm and the second buffer pad. After the vibration force received by the shift arm passes through, due to the first buffer pad, the shift arm, the first gap formed between the second buffer pad and the connecting pin, the vibration force received by the shift arm is not transmitted to the connecting pin, and the vibration force received by the shift arm is attenuated by the first buffer pad and the second buffer pad, and a first gap is formed between the gasket and the second buffer pad, which can have a good vibration isolation effect on the shift arm and better reduce the vibration transmitted by the shift arm, with less vibration and better ride comfort of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 The invention is a schematic diagram of the internal structure of a structure for reducing the shifting vibration of a manual transmission.

[0017] Figure 2 The invention is a schematic diagram of the overall structure of a structure for reducing gear shifting vibration of a manual transmission.

[0018] Figure 3 The invention discloses a general appearance diagram of a structure for reducing the shift vibration of a manual transmission arranged on a transmission.

[0019] 100-manual transmission shift vibration reduction structure, 10-shift arm, 20-first buffer pad, 30-second buffer pad, 40-connecting pin, 50-gasket, 60-counterweight, 11-connecting part, 111-mounting hole, 12-first extension part, 13-first bending part, 14-second extension part, 15-sleeve, 151-through hole, 16-third extension part, 17-second bending part, 18-fourth extension part, 19-arm pin, 191-reinforcement pad, 41-limiting part, 51-first gap, 52-second gap. DETAILED DESCRIPTION

[0020] Embodiments of the invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the invention, and should not be construed as limiting the invention.

[0021] In the description of the invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, in the description of the invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0022] See also Figures 1 to 3The invention provides a manual transmission shift structure 100, comprising a shift arm 10, a first buffer pad 20, a second buffer pad 30, a connecting pin 40 and a gasket 50, wherein the first buffer pad 20 is fixedly connected to the shift arm 10, the second buffer pad 30 is fixedly connected to the shift arm 10 and is located at an end of the shift arm 10 away from the first buffer pad 20, one end of the connecting pin 40 is fixedly connected to the gasket 50, and a first gap 51 is formed between the gasket 50 and the second buffer pad 30, the other end of the connecting pin 40 passes through the first buffer pad 20, the shift arm 10 and the second buffer pad 30 in sequence, and is gap-matched with the first buffer pad 20, the shift arm 10 and the second buffer pad 30, and a second gap 52 is formed between the outer wall of the connecting pin 40 and the inner wall of the first buffer pad 20, the shift arm 10 and the second buffer pad 30.

[0023] In this embodiment, the shift arm 10 is formed by stamping a steel plate, and the shift arm 10 is fixedly connected to the shift mechanism of the gearbox. The first buffer pad 20 is fixedly connected to the shift arm 10 and is located at the end of the shift arm 10 away from the shift mechanism. The second buffer pad 30 is fixedly connected to the shift arm 10 and is located at the end of the shift arm 10 away from the first buffer pad 20. The first buffer pad 20 and the second buffer pad 30 are both made of rubber material. One end of the connecting pin 40 is fixedly connected to the gasket 50, and a first gap 51 is formed between the gasket 50 and the second buffer pad 30. The other end of the connecting pin 40 passes through the first buffer pad 20, the shift arm 10 and the second buffer pad 30 in sequence, and is gap-matched with the first buffer pad 20, the shift arm 10 and the second buffer pad 30, and a second gap 52 is formed between the outer wall of the connecting pin 40 and the inner wall of the first buffer pad 20, the shift arm 10 and the second buffer pad 30. When the gear shift device of the gearbox transmits the vibration force to the gear shift arm 10, the gear shift arm 10 vibrates. The second gap 52 is set so that the gear shift arm 10 does not contact the connecting pin 40 when vibrating, and a first gap 51 is formed between the gasket 50 and the second buffer pad 30. The vibration amplitude generated by the gear shift arm 10 causes the second buffer pad 30 and the gasket 50 to abut against each other, so that the vibration force received by the gear shift arm 10 is buffered and attenuated by the second buffer pad 30 and the first buffer pad 20, which can protect the gear shift arm 10. A better vibration isolation effect can be achieved. At the same time, since the shift arm 10 is made of steel plate, compared with the one cast by ductile iron, it not only has a simple processing technology and light weight, but also has a higher modal state and is less likely to generate excitation, which can reduce the problem of numbness at the shift handle of the whole vehicle. By improving the modal state of the shift arm 10, adding the first buffer pad 20 and the second buffer pad 30, and coordinating the first gap 51 and the second gap 52, the vibration range of the shift arm 10 being excited is improved, the vibration transmitted through the shift arm 10 is weakened to the greatest extent, and the riding comfort of the whole vehicle is improved.

[0024] Furthermore, the shift arm 10 includes a connecting portion 11, a first extension portion 12, a first bent portion 13 and a second extension portion 14, the connecting portion 11 having a mounting hole 111, the first extension portion 12 is fixedly connected to the connecting portion 11, the first bent portion 13 is fixedly connected to the first extension portion 12 and is located at an end of the first extension portion 12 away from the connecting portion 11, the second extension portion 14 is fixedly connected to the first bent portion 13 and is located at an end of the first bent portion 13 away from the first extension portion 12, and the second extension portion 14 is clearance-matched with the connecting pin 40, forming a Z-shaped structure between the first extension portion 12, the first bent portion 13 and the second extension portion 14.

[0025] In this embodiment, the connecting portion 11 is electrically connected to the shifting mechanism on the gearbox through the mounting hole 111, the connecting portion 11 is integrally formed with the first extension portion 12, the first bending portion 13 and the second extension portion 14, a Z-shaped structure is formed between the first extension portion 12, the first bending portion 13 and the second extension portion 14, the first buffer pad 20 and the second buffer pad 30 are both fixedly connected to the second extension portion 14 and are located at one end of the second extension portion 14 away from the first bending portion 13, and the first buffer pad 20, the second buffer pad 30 and the second extension portion 14 are all clearance-matched with the connecting pin 40, when the shifting mechanism transmits the vibration force to the connecting portion 1 1, the connecting portion 11 transmits the vibration force to the first extension portion 12, the first bending portion 13 and the second extension portion 14 in sequence. Since a Z-shaped structure is formed between the first extension portion 12, the first bending portion 13 and the second extension portion 14, the vibration force transmitted by the connecting portion 11 can be weakened, and since the second gap 52 exists between the second extension portion 14 and the connecting pin 40, the amplitude of the vibration force generated by the second extension portion 14 will make the second buffer pad 30 abut against the gasket 50, and then the second buffer pad 30 and the first buffer pad 20 can buffer the force of the second extension portion 14, which can further weaken the vibration force transmitted by the connecting portion 11.

[0026] Furthermore, the shift arm 10 further includes a sleeve 15 , which is fixedly connected to the connecting portion 11 and is located inside the mounting hole 111 . A through hole 151 is defined on the inner side wall of the sleeve 15 .

[0027] In this embodiment, the connecting portion 11 is interference fit with the shift mechanism in the gearbox through the sleeve 15. The setting of the sleeve 15 can increase the connection stability of the connection between the connecting portion 11 and the shift mechanism. At the same time, the through hole 151 is provided on the sleeve 15, which can reduce the weight of the sleeve 15.

[0028] Furthermore, the shift arm 10 also includes a third extension portion 16, a second bent portion 17 and a fourth extension portion 18, the third extension portion 16 is fixedly connected to the connecting portion 11, the second bent portion 17 is fixedly connected to the third extension portion 16 and is located at an end of the third extension portion 16 away from the connecting portion 11, the fourth extension portion 18 is fixedly connected to the second bent portion 17 and is located at an end of the second bent portion 17 away from the third extension portion 16, and a Z-shaped structure is formed between the third extension portion 16, the second bent portion 17 and the fourth extension portion 18.

[0029] In this embodiment, the connecting portion 11, the third extension portion 16, the second bending portion 17 and the fourth extension portion 18 are integrally formed, and a Z-shaped structure is formed between the third extension portion 16, the second bending portion 17 and the fourth extension portion 18. When the shift mechanism transmits the vibration force to the connecting portion 11, the connecting portion 11 transmits the vibration force to the first extension portion 12 and the third extension portion 16 at the same time. Since the Z-shaped structure is formed between the third extension portion 16, the second bending portion 17 and the fourth extension portion 18, the vibration force transmitted by the connecting portion 11 can be weakened.

[0030] Furthermore, an angle is formed between the first extension portion 12 and the third extension portion 16, and the angle is 30° to 60°.

[0031] In this embodiment, the connecting portion 11, the first extension portion 12, the first bending portion 13, the second extension portion 14, the third extension portion 16, the second bending portion 17 and the fourth extension portion 18 are all integrally formed, and the angle formed between the first extension portion 12 and the third extension portion 16 is 30°~60°, which can not only ensure the compactness of the structure of the shift arm 10, but also disperse the vibration force transmitted from the shift mechanism and reduce the vibration amplitude.

[0032] Furthermore, the shift arm 10 further includes an arm pin 19 , which is riveted to the fourth extension portion 18 and is located at an end of the fourth extension portion 18 away from the second bending portion 17 .

[0033] In this embodiment, the swing arm pin 19 is riveted to the fourth extension portion 18, and the fourth extension portion 18 is connected to the vehicle cable through the swing arm pin 19. The swing arm pin 19 needs to withstand a certain tensile force. By riveting the swing arm pin 19 to the fourth extension portion 18, the swing arm pin 19 can be prevented from falling off the fourth extension portion 18.

[0034] Furthermore, the shift arm 10 further includes a reinforcement pad 191 , which is fixedly connected to the fourth extension portion 18 and is located between the fourth extension portion 18 and the arm pin 19 .

[0035] In this embodiment, the reinforcing pad 191 has a certain elasticity, and the provision of the reinforcing pad 191 can buffer the force generated between the fourth extension portion 18 and the rotating pin.

[0036] Furthermore, the manual transmission shift shudder reduction structure 100 further includes a counterweight 60 , which is fixedly connected to the connecting pin 40 and is located at an end of the connecting pin 40 away from the gasket 50 .

[0037] In the present embodiment, the shift arm 10 generates an amplitude after being subjected to the vibration force, so that the second buffer pad 30 and the gasket 50 are in contact with each other, and the first buffer pad 20 and the counterweight block 60 are in contact with each other. The second buffer pad 30 can buffer the vibration force of the shift arm 10, and the first buffer pad 20 can buffer the vibration force of the shift arm 10, and they work together to weaken the vibration of the shift arm 10. At the same time, the shift arm 10 and the counterweight block 60 are separated, which can indirectly increase the weight of the shift arm 10, further reduce the vibration force of the shift arm 10, and at the same time ensure that the shift arm 10 has good shifting performance.

[0038] Furthermore, the connection pin 40 has a limiting portion 41 , and the limiting portion 41 and the counterweight block 60 abut against each other.

[0039] In this embodiment, the provision of the limiting portion 41 can further improve the connection stability between the counterweight block 60 and the connecting pin 40 , so that the counterweight block 60 is not easy to fall off.

[0040] The above disclosure is only a preferred embodiment of the invention, which certainly cannot be used to limit the scope of the invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the invention still fall within the scope of the invention.

Claims

1. A manual transmission shifting structure, characterized in that : includes a shift arm, a first buffer pad, a second buffer pad, a connecting pin and a gasket, the first buffer pad is fixedly connected to the shift arm, the second buffer pad is fixedly connected to the shift arm and is located at an end of the shift arm away from the first buffer pad, one end of the connecting pin is fixedly connected to the gasket, and a first gap is formed between the gasket and the second buffer pad, the other end of the connecting pin passes through the first buffer pad, the shift arm and the second buffer pad in sequence, and is gap-matched with the first buffer pad, the shift arm and the second buffer pad, and a second gap is formed between the outer wall of the connecting pin and the inner wall of the first buffer pad, the shift arm and the second buffer pad, the shift arm includes a connecting portion, a first extension portion, a first bending portion and a second extension portion, the connecting portion is provided with a mounting hole, the first extension portion is fixedly connected to the connecting portion, the first bending portion is fixedly connected to the first extension portion and is located at an end of the first extension portion away from the connecting portion, the second extension portion is aligned with the first bending portion The shift arm further comprises a third extension, a second extension and a fourth extension, wherein the third extension is fixedly connected to the connecting portion, the second extension is fixedly connected to the third extension and is located at one end of the third extension away from the connecting portion, the fourth extension is fixedly connected to the second extension and is located at one end of the second extension away from the third extension, a Z-shaped structure is formed between the third extension, the second extension and the fourth extension, an angle is formed between the first extension and the third extension, and the angle is 30° to 60°, the manual transmission shift structure further comprises a counterweight, the counterweight is fixedly connected to the connecting pin and is located at one end of the connecting pin away from the gasket, the connecting pin is provided with a limiting portion, and the limiting portion and the counterweight are mutually supported.

2. The manual transmission shift structure according to claim 1, characterized in that The shift arm also includes a sleeve, which is fixedly connected to the connecting portion and is located inside the mounting hole.

3. The manual transmission shift structure according to claim 2, characterized in that The inner wall of the sleeve body is provided with a through hole.

4. The manual transmission shift structure according to claim 1, characterized in that The shift arm further comprises an arm pin, which is riveted to the fourth extension portion and is located at an end of the fourth extension portion away from the second bending portion.

5. The manual transmission shift structure according to claim 4, characterized in that :The shift arm also includes a reinforcement pad, which is fixedly connected to the fourth extension portion and is located between the fourth extension portion and the arm pin.

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