Gear shifting execution system and shifting finger structure thereof

Abstract

The utility model provides a gear shifting execution system and a shifting finger structure thereof, and the shifting finger structure comprises a shifting finger shell, an accommodating cavity is formed in the shifting finger shell, and the accommodating 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 utility model relates to the technical field of gear shift actuators, in particular to a gear shift execution system and a shift finger structure thereof. [Background Technology]

[0002] Existing shift actuators, when mated with a transmission shift fork, rely on shift fingers to move the fork. Typically, these fingers are connected to the actuator's screw rod via either a rigid or threaded connection. However, rigidly mated fingers are complex, occupy a large space, and are difficult to design. Threaded metal fingers are difficult to manufacture and prone to wear during use, impacting the device's lifespan and reliability.

[0003] Therefore, it is necessary to propose an improved technical solution to solve the above problems. [Utility Model Content]

[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 applicable to 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, which has a accommodating cavity formed therein, and the accommodating cavity has openings formed at both ends of the finger shift housing; a shift head, which is formed on the outside of the finger shift housing; an injection molding structure, which is arranged in the accommodating cavity, and has 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 rotation; wherein the injection molding structure is injection-molded in the accommodating cavity of the finger shift housing.

[0006] 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 gear shift actuator, which includes a screw with an external thread; a shift finger structure such as the one provided by the present invention, wherein 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 shift finger structure is used to connect to the shift fork of the gearbox.

[0007] Compared with the prior art, the present invention integrates an internal thread injection structure in the shift finger housing, and the internal thread injection structure cooperates with the screw thread of the shift actuator. The screw drives the shift finger structure to move along the axis by rotation, so that the shift finger structure provided by the present invention has the advantages of simple structure, low manufacturing cost, and long service life, 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 those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0009] Figure 1 A perspective view 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 view of the finger structure shown in FIG.

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

[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 implementation methods.

[0015] The term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to separate or selective embodiments that are mutually exclusive of other embodiments. Unless otherwise specified, the terms "connected," "connected," and "connected" herein, indicating electrical connection, 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, the present invention is as follows in one embodiment Figure 1 Schematic diagram of the axial cross-section of the finger structure shown.

[0017] Figure 1and Figure 2 The illustrated shift finger structure includes a shift finger housing 10, a shift head 20, and an injection molded structure 30. The shift finger housing 10 includes a receiving cavity 12, with openings 14 formed at both ends of the housing. The shift head 20 is formed on the outside of the shift finger housing 10. The injection molded structure 30 is disposed within the receiving cavity 12. A through hole 32 extending through the injection molded structure 30 and internal threads 34 formed on the inner wall of the through hole 32 are formed therein. The injection molded structure 30 engages with the external threads 42 of the screw 40 of the shift actuator through its internal threads 34. The screw 40 rotates, driving the shift finger structure along its axis, thereby transmitting force. The injection molded structure 30 is injection molded within the receiving cavity 12 of the shift finger 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; and the material of the injection molded structure 30 is plastic.

[0019] exist Figure 1 and Figure 2 In the illustrated embodiment, a first limiting step 16 is provided on the inner wall of the accommodating cavity 12 of the finger shift housing 10, and a second limiting step 36 is formed at a corresponding position on the injection molding structure 30 to match the first limiting step 16. An exhaust port (or discharge port) 18 is provided on the sidewall of the accommodating cavity 12 of the finger shift housing 10, extending therethrough. The injection molding structure 30 has a limiting structure 38 formed at a corresponding position on the exhaust port 18, embedded within the exhaust port 18. The second limiting step 36, limiting structure 38, and injection molding structure 30 are integrally formed by injection molding within the accommodating cavity 12 of the finger shift housing 10. The first limiting step 16 and exhaust port 18 designed into the finger shift housing 10 limit the injection molding structure 30 along the axis of the screw 40, ensuring that the injection molding structure 30 does not separate from the finger shift housing 10 along the axis 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, the present invention is as follows in one embodiment Figure 1 The radial cross-section diagram of the finger structure at the first position is shown; please refer to Figure 4 As shown, the present invention is as follows in one embodiment Figure 1 The radial cross-sectional view of the finger structure at the second position is shown in FIG. 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. The radial section of the injection molding structure 30 is perpendicular to the axis of the screw 40. In other words, 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 in 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 profile 39 of the radial section of the injection-molded structure 30 is elliptical.

[0022] Please refer to Figure 5 As shown, the present invention is as follows in one embodiment 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. A channel 52 is formed in the housing 50 for the finger structure to perform linear reciprocating motion. The finger housing 10 is anti-twistably arranged in the channel 52 of the housing 50. Figure 1 and Figure 5 In the embodiment shown, the channel 52 in the housing 50 limits the freedom of the finger housing 10 in the radial direction by a plane, thereby guiding and limiting the movement of the finger housing 10. Figure 1 The finger structure shown can only perform linear reciprocating motion along the screw 40. Excessive operation of the finger housing 10 will cause severe wear. Therefore, an oil storage tank 19 is provided on the surface of the finger housing 10 that contacts 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, thereby reducing 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 transmission, 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 to the shift fork of the transmission.

[0024] In summary, in the shift execution system and its shift finger structure provided by the present invention, the shift finger structure is formed by injecting plastic inside the metal part, thereby simplifying the rigid connection of the 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 "upper", "lower", "front", "back", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside", "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 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 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 depart 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 aforementioned specific embodiments.

Claims

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

2. The finger-shifting structure according to claim 1, characterized in that: The finger dial housing and the dial head are an integrated structure; The finger dial 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, 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 dial housing is provided, and a limiting structure embedded in the exhaust port is formed on the injection molding structure 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, 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, 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, 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, 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 provided on the surface of the finger housing that contacts the channel. 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, characterized in that: It includes: a gearbox including a shift fork; a shift actuator comprising a screw with an external thread; According to the shift finger structure according to any one of claims 1 to 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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