Gear shifting execution system and shifting finger structure thereof

Abstract

The invention provides a gear shifting execution system and a shifting finger structure thereof, and the shifting finger structure comprises a shifting finger shell in which a containing cavity is formed, and the containing cavity is provided with openings at the two ends of the shifting finger shell; the shifting block is formed on the outer side of the shifting finger shell; the injection molding structure is arranged in the containing cavity, a through hole penetrating through the injection molding structure and an internal thread formed on the inner wall of the through hole are formed in the injection molding structure, the injection molding structure is matched with an external thread of a screw of the gear shifting actuator through the internal thread of the injection molding structure, and the screw rotates to drive the shifting finger structure to move along the axis of the screw; the injection molding structure is formed in the containing cavity of the shifting finger shell in an injection molding mode. Compared with the prior art, the shifting finger structure has the advantages of being simple in structure, low in manufacturing cost, long in service life and the like, and is suitable for various gear shifting actuator devices.

Description

[Technical field]

[0001] The present invention relates to the technical field of gear shift actuators, and in particular to a gear shift execution system and a shift finger structure thereof. [Background technology]

[0002] When the existing shift actuator is matched with the gearbox shift fork, the shift fork needs to be moved by the shift finger. Usually, the shift finger needs to be connected to the screw of the shift actuator by rigidity or thread. However, the structure of the rigidly matched shift finger is complex, occupies a large space, and is difficult to design; the structure of the metal threaded matched shift finger is difficult to process and is prone to wear during use, affecting the service life and reliability of the device.

[0003] Therefore, it is necessary to propose an improved technical solution to solve the above problems. [Summary of the invention]

[0004] One of the purposes of the present invention is to provide a gear shift execution system and a finger structure thereof, wherein the finger structure has the advantages of simple structure, low manufacturing cost, long service life, etc., and is suitable for various gear shift actuator devices.

[0005] According to one aspect of the present invention, the present invention provides a finger shift structure, which includes: a finger shift housing, a housing formed therein, and the housing formed with openings at both ends of the finger shift housing; a shift head formed on the outer side of the finger shift housing; an injection molding structure, which is arranged in the housing cavity, a through hole penetrating the injection molding structure and an internal thread formed on the inner wall of the through hole, the injection molding structure cooperates with the external thread of the screw of the shift actuator through its internal thread, and the screw drives the finger shift structure to move along the axis of the screw by rotating; wherein the injection molding structure is formed by injection molding in the housing cavity of the finger shift housing.

[0006] According to another aspect of the present invention, the present invention provides a gear shift execution system, which includes: a gearbox, which includes a shift fork; a gear shift actuator, which includes a screw with an external thread; a finger structure as provided by the present invention, the screw of the gear shift actuator passes through the through hole of the injection molding structure, the internal thread of the through hole of the injection molding structure cooperates with the external thread of the screw, and the shift head of the finger structure is used to connect the shift fork of the gearbox.

[0007] Compared with the prior art, the present invention integrates an internal thread injection molding structure in the finger housing, and the internal thread injection molding structure cooperates with the screw thread of the shift actuator. The screw drives the finger structure to move along the axis by rotation, so that the finger structure provided by the present invention has the advantages of simple structure, low manufacturing cost, long service life, etc., and is suitable for various shift actuator devices.

Brief Description of the Drawings

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0009] Figure 1 A three-dimensional diagram of a finger-shifting structure in one embodiment of the present invention;

[0010] Figure 2 In one embodiment of the present invention, Figure 1 The schematic axial cross-sectional view of the finger structure shown;

[0011] Figure 3 In one embodiment of the present invention, Figure 1 The radial cross-sectional diagram of the finger structure shown in the first position;

[0012] Figure 4 In one embodiment of the present invention, Figure 1 The radial cross-sectional diagram of the finger structure shown in the second position;

[0013] Figure 5 In one embodiment of the present invention, Figure 1 The radial cross-sectional diagram of the finger structure after installation is shown. [Specific implementation method]

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words "connected", "connected", and "connected" herein that indicate electrical connection all refer to direct or indirect electrical connection.

[0016] Please refer to Figure 1 As shown, it is a three-dimensional diagram of the finger structure in one embodiment of the present invention; please refer to Figure 2 As shown, it is the present invention in one embodiment as Figure 1 A schematic diagram of the axial cross-section of the finger structure shown.

[0017] Figure 1 and Figure 2The finger shift structure shown includes a finger shift housing 10, a shift head 20 and an injection molding structure 30. The finger shift housing 10 is formed with a receiving cavity 12, and the receiving cavity 12 is formed with openings 14 at both ends of the finger shift housing 10. The shift head 20 is formed on the outside of the finger shift housing 10. The injection molding structure 30 is arranged in the receiving cavity 12, and a through hole 32 penetrating the injection molding structure 30 and an internal thread 34 formed on the inner wall of the through hole 32 are formed in the injection molding structure 30. The injection molding structure 30 cooperates with the external thread 42 of the screw 40 of the shift actuator through its internal thread 34. The screw 40 drives the finger shift structure to move along the axis of the screw 40 by rotating, thereby playing a role in transmitting force; wherein, the injection molding structure 30 is formed by injection molding in the receiving cavity 12 of the finger shift housing 10.

[0018] exist Figure 1 and Figure 2 In the specific embodiment shown, the finger housing 10 and the dial head 20 are an integrated structure; the material of the finger housing 10 and the dial head 20 is metal material; the material of the injection molding structure 30 is plastic material.

[0019] exist Figure 1 and Figure 2 In the specific embodiment shown, a first limiting step 16 is provided on the inner wall of the accommodating cavity 12 of the finger housing 10, and a second limiting step 36 matching the first limiting step 16 is formed at a corresponding position of the injection molding structure 30; an exhaust port (or discharge port) 18 penetrating the side wall of the accommodating cavity 12 of the finger housing 10 is provided, and a limiting structure 38 embedded in the exhaust port 18 is formed at a corresponding position of the exhaust port 18 of the injection molding structure 30; the second limiting step 36, the limiting structure 38 and the injection molding structure 30 are an integral structure formed by injection molding in the accommodating cavity 12 of the finger housing 10. The first limiting step 16 and the exhaust port 18 designed in the finger housing 10 can limit the injection molding structure 30 along the axial direction of the screw 40 to ensure that the injection molding structure 30 will not separate from the finger housing 10 along the axial direction of the screw 40. It can also be said that the first limiting step 16 and the exhaust port 18 are used to limit the injection structure 30 along the axial direction of the screw 40 .

[0020] Please refer to Figure 3 As shown, it is the present invention in one embodiment as Figure 1 The radial cross-sectional diagram of the finger structure shown in the first part; please refer to Figure 4 As shown, it is the present invention in one embodiment as Figure 1 The radial cross-sectional diagram of the finger structure at the second position is shown. Figure 3 and Figure 4As shown, the outer edge profile 39 of the radial section of the injection molding structure 30 is non-circular to prevent the injection molding structure 30 from rotating with the screw 40, wherein the radial section of the injection molding structure 30 is perpendicular to the axis of the screw 40. It can also be said that the non-circular structure of the outer edge profile 39 of the radial section of the injection molding structure 30 is used to limit the injection molding structure 30 along the radial direction of the screw 40, ensuring that the injection molding structure 30 does not rotate with the rotation of the screw 40.

[0021] exist Figure 3 and Figure 4 In the illustrated embodiment, the outer edge contour 39 of the radial section of the injection-molded structure 30 is elliptical.

[0022] Please refer to Figure 5 As shown, it is the present invention in one embodiment as Figure 1 The radial cross-section diagram of the finger structure after installation is shown. Figure 5 In the embodiment shown, Figure 1 The finger structure shown is installed in a housing 50, and a channel 52 is formed in the housing 50 for the finger structure to perform linear reciprocating motion. The finger housing 10 is arranged in the channel 52 of the housing 50 to prevent torsion. Figure 1 and Figure 5 In the embodiment shown, the channel 52 in the housing 50 is guided by limiting the freedom of the finger housing 10 in the radial direction thereof through a plane, limiting the Figure 1 The finger structure shown can only perform linear reciprocating motion along the screw 40. Excessive operation of the finger housing 10 will lead to severe wear. Therefore, an oil storage tank 19 is provided on the surface of the finger housing 10 in contact with the channel 52 for storing oil. The design of the oil storage tank 19 can ensure that grease is always present between the finger housing 10 and the channel 52 to reduce the wear of the finger housing 10 during operation.

[0023] According to another aspect of the present invention, the present invention provides a shift execution system, which includes: a gearbox, which includes a shift fork; a shift actuator, which includes a screw 40 with an external thread 42; a shift finger structure as described above in the present invention, wherein the screw 40 of the shift actuator passes through the through hole 32 of the injection molding structure 30, the internal thread 34 of the through hole 32 of the injection molding structure 30 cooperates with the external thread 42 of the screw 40 of the shift actuator, and the shift head 20 of the shift finger structure is used to connect the shift fork of the gearbox.

[0024] In summary, in the shift execution system and the shift finger structure thereof provided by the present invention, the shift finger structure is formed by injection molding plastic inside a metal part, thereby simplifying the rigidly connected shift shaft while maintaining high strength, avoiding the difficulty of thread processing, and improving the reliability and service life of the metal thread matching, and is suitable for various shift actuator devices.

[0025] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] It should be noted that any changes made by those skilled in the art to the specific embodiments of the present invention do not deviate from the scope of the claims of the present invention. Accordingly, the scope of the claims of the present invention is not limited to the above specific embodiments.

Claims

1. A finger-shifting structure, It is characterized in that It includes: A finger dial housing is formed with a receiving cavity therein, and the receiving cavity is formed with openings at both ends of the finger dial housing; A dial head formed on the outer side of the dial housing; An injection molding structure is arranged in the accommodating cavity, wherein a through hole penetrating the injection molding structure and an internal thread formed on the inner wall of the through hole are formed in the injection molding structure, wherein the injection molding structure cooperates with the external thread of the screw of the shift actuator through its internal thread, and the screw drives the finger structure to move along the axis of the screw by rotating; Wherein, the injection-molded structure is formed by injection molding in the accommodating cavity of the finger-shift housing.

2. The finger-shifting structure according to claim 1, It is characterized in that The finger dial housing and the dial head are an integrated structure; The finger housing and the dial head are made of metal; The injection molding structure is made of plastic.

3. The finger-shifting structure according to claim 1, It is characterized in that A first limiting step is provided on the inner wall of the accommodating cavity of the finger-shift housing, and a second limiting step matching the first limiting step is formed at a corresponding position of the injection molding structure; An exhaust port penetrating the side wall of the accommodating cavity of the finger housing is provided, and the injection molding structure is formed with a limiting structure embedded in the exhaust port at a position corresponding to the exhaust port; The second limiting step, the limiting structure and the injection molding structure are an integrated structure formed by injection molding in the accommodating cavity of the finger shift housing.

4. The finger-shifting structure according to claim 3, It is characterized in that The first limiting step and the exhaust port are used to limit the injection structure along the axial direction of the screw.

5. The finger-shifting structure according to claim 1, It is characterized in that The outer edge profile of the radial section of the injection molding structure is non-circular to prevent the injection molding structure from rotating with the screw. The radial section is perpendicular to the axis of the screw.

6. The finger-shifting structure according to claim 5, It is characterized in that The outer edge contour of the radial section of the injection molding structure is elliptical.

7. The finger-shifting structure according to any one of claims 1 to 6, It is characterized in that The finger structure is installed in a housing, a channel for the finger structure to perform linear reciprocating motion is formed in the housing, and the finger housing is anti-twistably arranged in the channel of the housing. An oil storage tank is arranged on the surface of the finger housing that contacts the channel, and grease is stored in the oil storage tank to ensure that the grease is present between the finger housing and the channel.

8. A gear shift execution system, It is characterized in that It includes: a gearbox including a shift fork; A shift actuator, comprising a screw with external threads; According to any one of claims 1-7, the screw of the shift actuator passes through the through hole of the injection molding structure, the internal thread of the through hole of the injection molding structure cooperates with the external thread of the screw, and the shift head of the shift finger structure is used to connect to the shift fork of the gearbox.

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