Shift execution component for a gearbox

Abstract

The present disclosure relates to a shift execution assembly for a gearbox, which includes: a main body; a power device; a connecting rod defining a longitudinal axis; and a shift fork, the shift fork being sleeved on the connecting rod and disposed between a first part of the main body and a second part of the main body. Additionally, the shift execution assembly further includes a limiting device, one end of the limiting device being fixed to the first part of the main body, the other end of the limiting device being fixed to the second part of the main body, and the limiting device being configured to limit the stroke of the shift fork in the translation direction along the longitudinal axis of the connecting rod. The present disclosure also relates to a gearbox and a motor vehicle.

Description

Technical Field

[0001] The present disclosure relates to the technical field of transmission devices for motor vehicles. Specifically, the present disclosure relates to a shift execution assembly for a gearbox. Background Art

[0002] Currently, in a gearbox and its shift execution mechanism for a motor vehicle, the transmission stroke of a power device for providing power for a shifting operation is generally greater than the moving stroke of a shift fork connected to a gear set of the gearbox. This easily causes the shift fork to impact the components of the gearbox, thereby resulting in damage to the gearbox and reducing the service life of the gearbox. Summary of the Invention

[0003] An object of the present disclosure is to provide a shift execution assembly for a gearbox to solve the above problems in the prior art.

[0004] According to a first aspect of the present disclosure, there is provided a shift execution assembly for a gearbox. The shift execution assembly includes: a main body including a first part and a second part opposite to each other; a power device abutting against the first part of the main body; a link defining a longitudinal axis, one end of the link along the longitudinal axis penetrating through the first part of the main body and connected to the power device, and the other end of the link along the longitudinal axis penetrating through the second part of the main body; a shift fork sleeved on the link and disposed between the first part and the second part of the main body, and the power device is configured to move the shift fork in a translation direction along the longitudinal axis by providing power to the link. In addition, the shift execution assembly further includes a limiting device, one end of the limiting device is fixed to the first part of the main body, the other end of the limiting device is fixed to the second part of the main body, and the limiting device is configured to limit the stroke of the shift fork in the translation direction.

[0005] In some embodiments, the limiting device includes a limiting opening, and the shift fork includes a protruding portion. The protruding portion of the shift fork is inserted into the limiting opening so that the stroke of the shift fork in the translation direction is limited within the range of the length of the limiting opening along the translation direction.

[0006] In some embodiments, the length of the limiting opening along the translation direction is configured to be less than the distance between the first part and the second part of the main body in the translation direction of the shift fork.

[0007] In some embodiments, the limiting device is further configured to limit the rotation of the shift fork in a direction around the longitudinal axis of the link.

[0008] In some embodiments, the limiting device is a first limiting device, and the first limiting device can be replaced with a second limiting device. The only difference between the first limiting device and the second limiting device is that the length of the limiting opening of the first limiting device is different from the length of the limiting opening of the second limiting device. Thus, the stroke of the shift fork in the translation direction can be limited within different length ranges.

[0009] In some embodiments, one end of the limiting device is fixed to the first part of the main body by a first fastener, and the other end of the limiting device is fixed to the second part of the main body by a second fastener.

[0010] In some embodiments, both the first fastener and the second fastener are screws.

[0011] In some embodiments, both the first fastener and the second fastener are self-tapping screws.

[0012] In some embodiments, the limiting device further includes a third fastener configured to fix one end or the other end of the limiting device to the main body, and configured to withstand the shear force applied to the limiting device by the shift fork along the shear direction and provide support in the shear direction, the shear direction being parallel to the direction of the longitudinal axis of the connecting rod.

[0013] In some embodiments, the third fastener is a pin.

[0014] In some embodiments, the third fastener is a cylindrical pin, a spring pin or a split pin.

[0015] In some embodiments, the power device is a cylinder, a motor or a hydraulic cylinder.

[0016] According to a second aspect of the present disclosure, there is provided a transmission, wherein the transmission includes the shift execution assembly as described above.

[0017] According to a third aspect of the present disclosure, there is provided a motor vehicle, wherein the motor vehicle includes the transmission as described above.

[0018] The beneficial effects of the shift execution assembly for a transmission according to the present disclosure are as follows: By providing a limiting device in the shift execution assembly, it is possible not only to limit the transmission stroke of the power device and the movement stroke of the shift fork while guiding the movement direction of the shift fork, but also to prevent the rotation of the shift fork.

[0019] In addition, in the shift execution assembly for a transmission according to the present disclosure, the limiting device can make the shift stroke more accurate and can also prevent the shift fork from hitting the transmission gear, thereby protecting transmission components such as the power device, the connecting rod, and the transmission gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By considering the following description of the preferred embodiments of the present disclosure in conjunction with the accompanying drawings, various objectives, features, and advantages of the present disclosure will become more apparent. The drawings are only illustrative diagrams of the present disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. It should be understood that the given drawings are only exemplary illustrations of the present disclosure. Those of ordinary skill in the art can make modifications and variations based on these drawings to obtain other feasible embodiments.

[0021] Figure 1 is a perspective view of a shift execution assembly according to an embodiment of the present disclosure.

[0022] Figure 2 is an exploded view of a shift execution assembly according to an embodiment of the present disclosure.

[0023] Figure 3 and Figure 4 are schematic diagrams of a shift execution assembly according to an embodiment of the present disclosure when the shift fork is at the limit position of the stroke.

[0024] List of reference signs:

[0025] 1 - Main body of the shift execution assembly; 2 - Power device; 3 - Shift fork; 4 - Connecting rod; 5 - Limiting device; 6 - Third fastener; 7 - Second fastener; 8 - First fastener; 9 - Limiting opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present disclosure will be described below with reference to the accompanying drawings, in which the drawings show the preferred embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and to fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the technical features in the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. Those skilled in the art can appropriately modify the detailed configuration without departing from the gist of the present disclosure.

[0027] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be deformed.

[0028] Unless otherwise specified, the terms (including technical and scientific terms) used herein shall have the meanings commonly understood by those of ordinary skill in the technical field to which this disclosure pertains. Unless otherwise specified, the terms "comprising" and "including" used in the specification and claims shall be interpreted in an open-ended sense, that is, "comprising" and "including" shall be interpreted as synonymous with the terms "comprising at least" or "including at least".

[0029] Unless otherwise specified, the terms "upper", "lower", "left", "right", "top", "bottom", etc. used in this disclosure are only the relative orientations of the device and its related components in the state shown in the figure.

[0030] It should be understood that the terminology in the specification is only used to describe specific embodiments and is not intended to limit this disclosure. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0031] Embodiments of the present disclosure provide a shift execution assembly for a gearbox, which guides the movement direction of a shift fork and limits the transmission stroke of a power device and the movement stroke of the shift fork by arranging a limiting device in the shift execution assembly.

[0032] Figure 1 is a perspective view of a shift execution assembly according to an embodiment of the present disclosure. Figure 2 is an exploded view of a shift execution assembly according to an embodiment of the present disclosure. As Figure 1 and Figure 2 shown, the shift execution assembly for a gearbox includes: a main body 1, a power device 2, a fork 3, a connecting rod 4, and a limiting device 5. As shown in the figure, the main body 1 includes a first part on the right side and a second part on the left side, and the first part and the second part of the main body 1 are arranged opposite to each other. The power device 2 abuts against the first part of the main body 1 on the right side. The connecting rod 4 defines a longitudinal axis, one end of the connecting rod 4 along its longitudinal axis penetrates through the first part of the main body 1 and is connected to the power device 2, and the other end of the connecting rod 4 along its longitudinal axis penetrates through the second part of the main body 1. The fork 3 is sleeved on the connecting rod 4 and is arranged between the first part and the second part of the main body 1.

[0033] When performing a shift operation, the power device 2 is configured to move the fork 3 in the translation direction along the longitudinal axis of the connecting rod by providing power to the connecting rod 4. Specifically, the power device 2 for performing a shift operation can be a cylinder, a motor, a hydraulic cylinder, etc.

[0034] For example, when the power device 2 is a cylinder, when a gear shifting operation is performed, air can be introduced into the cylinder via an air source, and the gas can act on the shift piston in the cylinder, so that the shift piston can drive the connecting rod 4 connected thereto to move in the corresponding shifting direction. Thus, the shift fork 3 is moved in the translational direction along the longitudinal axis of the connecting rod 4 by the shift piston and the connecting rod 4. The shift fork 3 is coupled to the gear set of the transmission, and by moving the shift fork 3 in the translational direction along the longitudinal axis of the connecting rod 4, the corresponding gear shifting operation is completed.

[0035] In addition, the shift execution assembly further includes a limiting device 5. As shown in the figure, one end of the limiting device 5 is fixed to the first part of the main body 1 on the right side, and the other end of the limiting device 5 is fixed to the second part of the main body 1. In this embodiment, the limiting device 5 is configured to limit the stroke of the shift fork 3 in its translational direction.

[0036] Specifically, the limiting device 5 includes a limiting opening 9, the shift fork 3 includes a protruding portion, and the protruding portion of the shift fork 3 is inserted into the limiting opening 9. By the limiting effect of the limiting opening 9 in the translational direction of the shift fork 3, the stroke of the shift fork 3 in the translational direction is limited within the range of the length of the limiting opening 9 in the translational direction.

[0037] As shown in the figure, the length of the limiting opening 9 in the translational direction of the shift fork 3 can be configured to be less than the distance between the first part of the main body 1 and the second part of the main body 1 in the translational direction. Figure 3 and Figure 4 are schematic diagrams of the shift execution assembly according to an embodiment of the present disclosure when the shift fork is at the limit position of the stroke. As Figure 3 and Figure 4 shown, due to the limiting effect of the limiting opening 9, the shift fork 3 can at most move to the left or right limit position of the stroke under the action of the power device 2 and the connecting rod 4. By providing the limiting device 5, the stroke of the shift fork 3 is limited within Figure 3 the range between the left limit position of the stroke shown in Figure 4 and the right limit position of the stroke shown in Figure 4 . Therefore, the shifting stroke of the shift fork 3 can be made more accurate, and the shift fork 3 can be prevented from hitting the main body 1 and components such as transmission gears connected to the shift fork 3, thereby realizing the protection of transmission components such as the power device 2, the connecting rod 4, and the transmission gear.

[0038] Preferably, the shape of the limiting opening 9 of the limiting device 5 and the shape of the protruding part of the fork 3 are both set to be rectangular. Correspondingly, the limiting device 5 can be configured to limit the rotation of the fork 3 in the direction around the longitudinal axis of the connecting rod 4. However, those skilled in the art should understand that the shape of the limiting opening 9 of the limiting device 5 and the shape of the protruding part of the fork 3 are not limited to rectangular, but as long as the limiting opening 9 of the limiting device 5 and the protruding part of the fork 3 can be set to be shapes that are adapted to each other to meet the requirements of stroke limitation and / or rotation limitation of the fork 3.

[0039] Preferably, as shown in the figure, one end of the limiting device 5 is fixed to the first part on the right side of the main body 1 through the first fastener 8, and the other end of the limiting device 5 is fixed to the second part on the left side of the main body 1 through the second fastener 7, thereby fixing the limiting device 5 to the main body 1. Preferably, both the first fastener 8 and the second fastener 7 can be selected as screws. Further preferably, both the first fastener 8 and the second fastener 7 can be self-tapping screws.

[0040] Preferably, as shown in the figure, the limiting device 5 can further include a third fastener 6. The third fastener 6 is configured to fix one end of the limiting device 5 on the side of the power device 2 or the other end of the limiting device 5 to the main body 1, and is configured to bear the shear force applied to the limiting device 5 by the fork 3 along the shear direction and provide support in the shear direction, and the shear direction is parallel to the direction of the longitudinal axis of the connecting rod 4. Preferably, the third fastener 6 can be a pin. For example, the third fastener 6 can be a cylindrical pin, a spring pin or a split pin. By additionally providing the third fastener 6 on the basis of the first fastener 8 and the second fastener 7, it is possible to better bear the shear force applied to the limiting device 5 by the fork 3 along the shear direction and provide support in the shear direction, thereby preventing the first fastener 8 and the second fastener 7 from loosening due to frequent shifting operations, thereby enhancing the fixation of the limiting device 5 and better ensuring the stroke limitation of the limiting device 5 to the fork 3. Those skilled in the art should understand that the third fastener 6 can be arranged near the first fastener 8 as shown in the figure, or can be arranged near the second fastener 7. In addition, the number of the third fasteners 6 can be one or more, and one or more third fasteners 6 for bearing the shear force can be arranged near the first fastener 8 and near the second fastener 7.

[0041] Preferably, the limiting device 5 shown in the figure is a first limiting device, and the first limiting device can be replaced with a second limiting device. The only difference between the first limiting device and the second limiting device is that the length of the limiting opening of the first limiting device is different from the length of the limiting opening of the second limiting device. Thus, the stroke of the shift fork 3 in the translation direction can be limited within different length ranges. By changing the length of the limiting opening of the limiting device 5 to change the stroke limit of the shift fork 3, the shift execution assembly described in the present disclosure can be applied to different transmission strokes of the power device in a simple and convenient manner, and thus can be applied to different types of power devices.

[0042] The second embodiment of the present disclosure provides a transmission, and the transmission includes the shift execution assembly as described in the above embodiment.

[0043] The third embodiment of the present disclosure provides a motor vehicle, and the motor vehicle includes the transmission as described in the second embodiment.

[0044] The scope of the present disclosure should be determined with reference to the appended claims and the full scope of equivalent forms empowered by these claims. The above embodiments are only exemplary embodiments of the present disclosure and are not used to limit the present disclosure. The scope of the present disclosure should be defined by the appended claims. Those skilled in the art can make various modifications or equivalent replacements within the protection scope of the present disclosure, and these modifications or equivalent replacements should also be regarded as falling within the scope of the present disclosure.

Claims

1. A shift execution assembly for a gearbox, the shift execution assembly comprising: A main body, the main body including a first part and a second part opposite to each other; A power device, the power device abutting against the first part of the main body; A connecting rod defining a longitudinal axis, one end of the connecting rod along the longitudinal axis passing through the first part of the main body and connected to the power device, and the other end of the connecting rod along the longitudinal axis passing through the second part of the main body; A shift fork, the shift fork sleeved on the connecting rod and disposed between the first part and the second part of the main body, the power device being configured to move the shift fork in a translation direction along the longitudinal axis by providing power to the connecting rod; Characterized in that, the shift execution assembly further includes a limiting device, one end of the limiting device is fixed to the first part of the main body by a first fastener, the other end of the limiting device is fixed to the second part of the main body by a second fastener, and the limiting device is configured to limit the stroke of the shift fork in the translation direction, and Wherein, the limiting device further includes a third fastener, the third fastener is configured to fix one end or the other end of the limiting device to the main body, and is configured to withstand the shear force applied to the limiting device by the shift fork along the shear direction and provide support in the shear direction, the shear direction being parallel to the direction of the longitudinal axis of the connecting rod.

2. The shift execution assembly for a gearbox according to claim 1, wherein, The limiting device includes a limiting opening, the shift fork includes a protrusion, and the protrusion of the shift fork is inserted into the limiting opening so that the stroke of the shift fork in the translation direction is limited within the range of the length of the limiting opening along the translation direction.

3. The shift execution assembly for a gearbox according to claim 2, wherein, The length of the limiting opening along the translation direction is configured to be less than the distance between the first part and the second part of the main body in the translation direction of the shift fork.

4. The shift execution assembly for a gearbox according to claim 3, wherein, The limiting device is further configured to limit the rotation of the shift fork in the direction around the longitudinal axis of the connecting rod.

5. The shift execution assembly for a transmission according to claim 4, wherein, The limiting device is a first limiting device, and the first limiting device can be replaced with a second limiting device, and the difference between the first limiting device and the second limiting device is only that the length of the limiting opening of the first limiting device is different from the length of the limiting opening of the second limiting device.

6. The shift execution assembly for a gearbox according to claim 1, wherein, Both the first fastener and the second fastener are screws.

7. The shift execution assembly for a transmission according to claim 6, wherein, Both the first fastener and the second fastener are self-tapping screws.

8. The shift execution assembly for a gearbox according to claim 1, wherein, The third fastener is a pin.

9. The shift execution assembly for a gearbox according to claim 8, wherein, The third fastener is a cylindrical pin, a spring pin or a split pin.

10. The shift execution assembly for a gearbox according to any one of claims 1 to 9, wherein, The power device is a cylinder, a motor or a hydraulic cylinder.

11. A gearbox, characterized in that, The gearbox includes the shift execution assembly according to any one of claims 1-10.

12. A motor vehicle, characterized in that, The motor vehicle includes the gearbox according to claim 11.

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