Variable speed control mechanism

Abstract

A variable speed control mechanism relates to the technical field of automobile parts and comprises a mounting seat. The joint support comprises a support body, a rocker arm mounting hole is formed in the support body, the radial spherical plain bearing is mounted in the rocker arm mounting hole, the rocker arm shaft is sleeved with the radial spherical plain bearing, the support body is provided with a hand feeling contour surface, the support body is provided with a shaft neck, and the shaft neck is rotationally mounted on the mounting seat; the operating rod assembly comprises an operating support and a roll shaft elastically abutting against the hand feeling contour face, the rocker arm shaft penetrates through and is fixed to the operating support, and a ball head is arranged at one end of the rocker arm shaft; one end of the swing arm is rotationally mounted on the mounting seat, the ball head is hinged to the middle of the swing arm, and a return spring is arranged between the swing arm and the mounting seat. The eccentric wear of the joystick assembly to the joint support can be prevented, and the mechanism is convenient and smooth to operate, high in gear shifting suction sense, high in sensing quality, simple in structure and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a transmission control mechanism. Background Technology

[0002] The process of selecting and shifting gears in a car is achieved by the driver operating the gear shift mechanism in the driver's cab. The specific operation is as follows: the driver swings the lever left and right, which drives the rocker arm shaft to move, and then drives the gear shift mechanism of the gearbox to select gears; similarly, swinging the lever back and forth achieves the gear shifting operation.

[0003] The existing transmission control mechanisms in the industry mostly adopt the following two structures:

[0004] 1. The support base is fixed and a radial joint bearing is installed in the middle of the support base. The control lever can rotate freely in all directions through the radial joint bearing. However, the support base and the control lever cannot swing left and right synchronously. The contact area of ​​the gear shifting and feedback parts is small, which makes them prone to uneven wear. This will result in a less tight, less obvious, and less durable feel.

[0005] Second, the support base can rotate left and right. A needle roller bearing is installed in the middle of the support base. The control lever can only rotate back and forth and left and right within a certain range through the needle roller bearing. The swing arm must be provided with free displacement space for the rocker arm and the hinge point of the swing arm. Therefore, the structure of the swing arm and the rocker arm hinge pair (assembly) is complex and the manufacturing cost is relatively high. Utility Model Content

[0006] In view of this, the technical problem to be solved by this utility model is to provide a gear shifting control mechanism to prevent the control lever assembly from wearing unevenly on the joint support. The mechanism is easy and smooth to operate, has a strong shifting feel, high perception quality, and is simple in structure and low in cost.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] The transmission control mechanism includes:

[0009] Mounting base; the speed control mechanism also includes

[0010] The joint bracket includes a radial joint bearing and a rocker arm shaft. The joint bracket includes a bracket body with a rocker arm mounting hole. The radial joint bearing is installed in the rocker arm mounting hole and sleeved on the rocker arm shaft. The bracket body has a tactile contour surface and a journal. The journal is rotatably mounted on a mounting base, and the extension direction of the journal is perpendicular to the extension direction of the rocker arm mounting hole.

[0011] A joystick assembly, comprising a control bracket and a roller that elastically abuts against the tactile contour surface, wherein a rocker arm shaft passes through and is fixed to the control bracket, and one end of the rocker arm shaft is provided with a ball head;

[0012] A swing arm, one end of which is rotatably mounted on the mounting base, the ball joint being hinged to the middle of the swing arm, and a return spring being provided between the swing arm and the mounting base.

[0013] Preferably, the bracket body is provided with an arc-shaped limiting groove, the arc-shaped limiting groove is located between the rocker arm mounting hole and the tactile contour surface, the arc-shaped limiting groove is arranged along the circumference of the rocker arm mounting hole, and the control lever assembly includes a limiting shaft, the limiting shaft is fixed to the control bracket and constrained within the arc-shaped limiting groove.

[0014] Preferably, a limiting pad is installed at the end of the arc-shaped limiting groove.

[0015] Preferably, the joystick assembly further includes a control handle, a spring support, and a spring. The control handle is fixed to the control bracket, the spring support is sleeved on the control handle, the roller is rotatably mounted on the spring support, and the spring abuts against the spring support and the control bracket.

[0016] Preferably, a sliding sleeve is fixedly installed in the middle of the swing arm, and a ball head bushing is slidably installed inside the sliding sleeve, with the ball head installed in the ball head bushing.

[0017] Preferably, the sliding sleeve is provided with a limiting inclined surface for limiting the rocker arm shaft.

[0018] Preferably, the swing arm is equipped with a gear selection cable connecting shaft, and the swing arm is rotatably mounted on the mounting base via the swing arm shaft. The gear selection cable connecting shaft and the swing arm shaft are respectively located at both ends of the sliding sleeve along the extension direction of the swing arm.

[0019] Preferably, the control bracket has a shift cable connection hole.

[0020] Preferably, it also includes a support body, which is detachably connected to the mounting base.

[0021] Preferably, the bracket body is provided with spare mounting holes.

[0022] After adopting the above technical solution, the beneficial effects of this utility model are:

[0023] The gear shifting mechanism of this application includes a mounting base, and a joint bracket, a radial joint bearing, and a rocker arm shaft. The joint bracket includes a bracket body with a rocker arm mounting hole. The radial joint bearing is installed in the rocker arm mounting hole and sleeved on the rocker arm shaft. The joint bracket, the radial joint bearing, and the rocker arm shaft together form a cross-shaped ball joint structure, allowing the rocker arm shaft to move freely in space. The bracket body has a tactile contour surface and a journal. The journal is rotatably mounted on the mounting base, and the extension direction of the journal is perpendicular to the extension direction of the rocker arm mounting hole. When the rocker arm shaft swings around the journal axis, it can drive the joint bracket to rotate together, causing the tactile contour surface to rotate along with it.

[0024] It also includes a joystick assembly, which includes a control bracket and a roller that elastically rests against the tactile contour surface. A rocker arm shaft passes through and is fixed to the control bracket, and one end of the rocker arm shaft is provided with a ball head. The swing of the rocker arm shaft is controlled by the control bracket. When the rocker arm shaft drives the tactile contour surface to swing together, the roller that rests against the tactile contour surface can move synchronously with the control bracket, so that it always rests against the tactile contour surface. This allows the joint bracket (with tactile contour surface) and the control bracket (with roller) to swing left and right synchronously. The roller and the tactile contour surface are always in close contact, which can prevent the joystick assembly from wearing unevenly on the joint bracket. The mechanism is easy and smooth to operate, has a strong shifting feel, and has high perception quality.

[0025] It also includes a swing arm, one end of which is rotatably mounted on a mounting base. The ball joint is hinged to the middle of the swing arm, and a return spring is provided between the swing arm and the mounting base. By rotating the joint bracket freely in all directions, the motion constraint of the combined displacement of the hinge point between the rocker arm shaft and the swing arm can be adjusted and released, avoiding interference and vibration, making operation easy and smooth. Moreover, the structure is simple and the cost is low. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the structure of the speed control mechanism according to an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 The main view;

[0029] Figure 3 yes Figure 2 AA section view (enlarged);

[0030] Figure 4 yes Figure 2 BB cross-sectional view (enlarged);

[0031] Figure 5 yes Figure 2 Side view;

[0032] Figure 6 yes Figure 5 CC section view;

[0033] Figure 7 This is a schematic diagram of the joint support structure in an embodiment of this utility model;

[0034] In the picture:

[0035] 1. Mounting bracket;

[0036] 2. Joint support; 21. Rocker arm mounting hole; 22. Tactile contour surface; 23. Journal; 24. Arc-shaped limiting groove; 25. Limiting pad;

[0037] 3. Radial joint bearing;

[0038] 4. Rocker arm shaft; 41. Ball joint;

[0039] 5. Control lever assembly; 51. Control bracket; 52. Roller; 53. Limiting shaft; 54. Control handle; 55. Assist spring support; 56. Assist spring; 57. Shift cable connection hole;

[0040] 6. Swing arm; 61. Sliding sleeve; 62. Ball head bushing; 63. Limiting inclined surface; 64. Gear selector cable connecting shaft;

[0041] 7. Return spring; 71. Swing arm shaft;

[0042] 8. Bracket body; 81. Spare mounting holes. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0044] like Figures 1 to 7 As shown in the diagram, this utility model includes a mounting base 1; the gear shifting mechanism also includes:

[0045] The joint bracket 2, the radial joint bearing 3, and the rocker arm shaft 4 are included. The joint bracket 2 includes a bracket body with a rocker arm mounting hole 21. The radial joint bearing 3 is installed in the rocker arm mounting hole 21 and is sleeved on the rocker arm shaft 4. The joint bracket 2, the radial joint bearing 3, and the rocker arm shaft 4 together form a cross-shaped ball joint structure, allowing the rocker arm shaft 4 to move freely in space. The bracket body is provided with a tactile contour surface 22 and a journal 23, which is rotatably mounted on the mounting base 1. The extension direction of the journal 23 is perpendicular to the extension direction of the rocker arm mounting hole 21. When the rocker arm shaft 4 swings around the axis of the journal 23, it can drive the joint bracket 2 to rotate together, causing the tactile contour surface 22 to rotate along with it.

[0046] The joystick assembly 5 includes a control bracket 51 and a roller 52 that elastically abuts against the tactile contour surface 22. A rocker arm shaft 4 passes through and is fixed to the control bracket 51, and a ball head 41 is provided at one end of the rocker arm shaft 4. The swing of the rocker arm shaft 4 is controlled by the control bracket 51. When the rocker arm shaft 4 drives the tactile contour surface 22 to swing together, the roller 52 that abuts against the tactile contour surface 22 can move synchronously with the control bracket 51, so that it always abuts against the tactile contour surface 22. This allows the joint bracket 2 (with the tactile contour surface 22) and the control bracket 51 (with the roller 52) to swing left and right synchronously. The roller 52 and the tactile contour surface 22 are always in close contact, which can prevent the joystick assembly 5 from wearing unevenly on the joint bracket 2. The mechanism is easy and smooth to operate, has a strong shifting feel, and has high perception quality. The tactile contour surface 22 is composed of multiple complete and continuous inclined surfaces, with arc-shaped grooves formed between adjacent inclined surfaces. The arc-shaped grooves are used to adapt to the roller shaft 52 to improve the tactile feel of gear selection and shifting.

[0047] The swing arm 6 has one end rotatably mounted on the mounting base 1. The ball joint 41 is hinged to the middle of the swing arm 6, and a return spring 7 is provided between the swing arm 6 and the mounting base 1. By rotating the joint bracket 2 freely in all directions, the motion constraint of the combined displacement of the hinge point between the rocker arm shaft 4 and the swing arm 6 can be adjusted and released, avoiding interference and vibration, making operation easy and smooth. Moreover, the structure is simple and the cost is low.

[0048] In this application, the bracket body is provided with an arc-shaped limiting groove 24, which is located between the rocker arm mounting hole 21 and the tactile contour surface 22. The arc-shaped limiting groove 24 is arranged circumferentially along the rocker arm mounting hole 21. The control lever assembly 5 includes a limiting shaft 53, which is fixed to the control bracket 51 and constrained within the arc-shaped limiting groove 24. When the control bracket 51 rotates via the rocker arm shaft 4, it can drive the limiting shaft 53 to rotate together, causing the limiting shaft 53 to move within the arc-shaped limiting groove 24. During this process, the extreme position of rotation is controlled by the arc length of the arc-shaped limiting groove 24.

[0049] The end of the arc-shaped limiting groove 24 is fitted with a limiting pad 25, which has the effect of limiting and damping the movement of the limiting shaft 53.

[0050] The joystick assembly 5 also includes a control handle 54, a spring support 55, and a spring 56. The control handle 54 is fixed on the control bracket 51, the spring support 55 is sleeved on the control handle 54, the roller 52 is rotatably mounted on the spring support 55, and the spring 56 abuts between the spring support 55 and the control bracket 51.

[0051] The upper end of the control handle 54 is provided with a threaded part for connecting the handball, and the control handle 54 is provided with an ear platform for installing an ear cover, which is used to fix the dust cover.

[0052] A sliding sleeve 61 is fixedly installed in the middle of the rocker arm 6, and a ball head bushing 62 is slidably installed inside the sliding sleeve 61. The ball head 41 is installed in the ball head bushing 62. During the rotation of the rocker arm shaft 4, the position of the ball head 41 changes continuously, which drives the rocker arm 6 to change its position in the vertical direction. The ball head bushing 62 and the sliding sleeve 61 can undergo relative displacement to achieve the position adjustment of the ball head 41.

[0053] The sliding sleeve 61 is provided with a limiting inclined surface 63 for limiting the rocker arm shaft 4. During the rotation of the rocker arm shaft 4, it drives the swing arm 6 to continuously change its position in the vertical direction through the ball head 41. The extreme position of the swing arm 6 is controlled by the limiting inclined surface 63. After the limiting inclined surface 63 abuts against the rocker arm shaft 4, it restricts its continued rotation. However, it should be noted that when the gear selector cable is installed, the extreme position of the rocker arm shaft 4 is controlled by the gear selector cable. The movable length of the gear selector cable is less than the movable distance of the swing arm 6. Therefore, the rocker arm shaft 4 is already limited by the gear selector cable before it touches the limiting inclined surface 63 during its movement, preventing it from moving further.

[0054] The swing arm 6 is equipped with a gear selection cable connecting shaft 64. The swing arm 6 is rotatably mounted on the mounting base 1 via the swing arm shaft 71. The gear selection cable connecting shaft 64 and the swing arm shaft 71 are respectively located at both ends of the sliding sleeve 61 along the extension direction of the swing arm 6. The gear selection cable connecting shaft 64 is used to connect the gear selection cable.

[0055] The control bracket 51 has a shift cable connection hole 57, which is located on the same side as the shift cable connection shaft 64. The shift cable connection hole 57 is used to connect the shift cable.

[0056] This application also includes a bracket body 8, which is detachably connected to the mounting base 1. The bracket body 8 is provided with a spare mounting hole 81. The position of the mounting base 1 can be adjusted through the spare mounting hole 81, making its position adjustable to accommodate both left-hand drive and right-hand drive vehicles. If the vehicle model or installation dimensions change, only the installation position of the mounting base 1 needs to be changed.

[0057] This application includes two operation processes: gear selection and gear shifting. Among them,

[0058] Gear selection operation: The control handle 54 swings around the axis of journal 23, causing the joint bracket 2 and rocker arm shaft 4 to swing together. The rocker arm shaft 4 then drives the swing arm 6 to swing up and down, thereby moving the gear selection cable to achieve gear selection. During gear selection, the swing angles of the joint bracket 2 and rocker arm shaft 4 continuously change, and the swing angle of the associated swing arm 6 also changes synchronously. The hinge point position between the rocker arm shaft 4 and the swing arm 6 also continuously changes. The angle can be flexibly adjusted via the radial joint bearing 3 installed on the joint bracket 2, making operation smooth and easy, and preventing vibration. Releasing the control handle 54 will automatically return it to its original position under the action of the return spring 7.

[0059] Gear shifting operation: The control handle 54 is swayed around the axis of the rocker arm shaft 4, and the control bracket 51 sways synchronously, driving the shift cable to move push and pull, thus realizing the gear shifting operation. The extreme position of the swaying is limited by the limit shaft 53 and the arc-shaped limit groove 24. Since the joint bracket 2 can swing together with the control handle 54, the tactile contour surface 22 is always in close contact with the roller shaft 52 (under the action of the assist spring 56), and the gear shifting process has a clear gear feel with a sucking sensation.

[0060] In summary, this application provides a gear shifting mechanism that has the advantages of relatively simple component structure and low manufacturing cost. The product performance features easy operation, smooth shifting, and high perceived quality.

[0061] Through the joint bracket 2, the control handle 54 can be rotated to any position in the front, back, left, and right. The rocker arm shaft 4 and the swing arm 6 have simple structures. Moreover, the joint bracket 2 (with the tactile contour surface 22) and the control stick assembly 5 (with the roller shaft 52) ​​can swing left and right synchronously. The roller shaft 52 and the tactile contour surface 22 are always in close contact, resulting in a tight feel and a noticeable suction sensation.

[0062] The joint bracket 2 can rotate freely in all directions, allowing for adjustment and release of the motion constraints of the combined displacement of the hinge point between the rocker arm shaft 4 and the swing arm 6, thus avoiding interference and vibration and making operation easy and smooth.

[0063] Meanwhile, the bracket body 8 and the mounting base 1 are separate structures, which improves versatility and avoids the need to redevelop the bracket body 8 (including the mounting base 1) due to changes in vehicle models or connection dimensions, thus preventing the scrapping of the initial casting mold. With this structure, the bracket body 8 and the mounting base 1 are separate; if the connection dimensions need to be changed, only the position of the spare mounting holes 81 on the bracket body 8 needs to be modified (only the punching mold needs to be changed), and the mounting base 1 can be reused, making it suitable for installation on various vehicle models.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transmission control mechanism, including: Mounting base; characterized in that the speed control mechanism further includes The joint bracket includes a radial joint bearing and a rocker arm shaft. The joint bracket includes a bracket body with a rocker arm mounting hole. The radial joint bearing is installed in the rocker arm mounting hole and sleeved on the rocker arm shaft. The bracket body has a tactile contour surface and a journal. The journal is rotatably mounted on a mounting base, and the extension direction of the journal is perpendicular to the extension direction of the rocker arm mounting hole. A joystick assembly, comprising a control bracket and a roller that elastically abuts against the tactile contour surface, wherein a rocker arm shaft passes through and is fixed to the control bracket, and one end of the rocker arm shaft is provided with a ball head; A swing arm, one end of which is rotatably mounted on the mounting base, the ball joint being hinged to the middle of the swing arm, and a return spring being provided between the swing arm and the mounting base.

2. The speed control mechanism as described in claim 1, characterized in that, The bracket body is provided with an arc-shaped limiting groove, which is located between the rocker arm mounting hole and the tactile contour surface. The arc-shaped limiting groove is arranged along the circumference of the rocker arm mounting hole. The control lever assembly includes a limiting shaft, which is fixed to the control bracket and constrained within the arc-shaped limiting groove.

3. The speed control mechanism as described in claim 2, characterized in that, A limiting pad is installed at the end of the arc-shaped limiting groove.

4. The speed control mechanism as described in claim 1, characterized in that, The joystick assembly also includes a control handle, a spring support, and a spring. The control handle is fixed to the control bracket, the spring support is sleeved on the control handle, the roller is rotatably mounted on the spring support, and the spring abuts against the spring support and the control bracket.

5. The speed control mechanism as described in claim 1, characterized in that, A sliding sleeve is fixedly installed in the middle of the swing arm, and a ball head bushing is slidably installed inside the sliding sleeve, with the ball head installed in the ball head bushing.

6. The speed control mechanism as described in claim 5, characterized in that, The sliding sleeve is provided with a limiting inclined surface for limiting the rocker arm shaft.

7. The speed control mechanism as described in claim 5, characterized in that, The swing arm is equipped with a gear selection cable connecting shaft, and the swing arm is rotatably mounted on the mounting base via the swing arm shaft. The gear selection cable connecting shaft and the swing arm shaft are respectively located at both ends of the sliding sleeve along the extension direction of the swing arm.

8. The speed control mechanism as described in claim 7, characterized in that, The control bracket is provided with a shift cable connection hole.

9. The speed control mechanism as described in claim 1, characterized in that, It also includes a support body, which is detachably connected to the mounting base.

10. The speed control mechanism as described in claim 9, characterized in that, The bracket body is provided with spare mounting holes.

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