Novel shifting fork structure with plastic insert

Abstract

The utility model relates to the technical field of shifting forks, in particular to a novel shifting fork structure with a plastic insert, which comprises a shifting fork and further comprises an I-shaped insert. Mounting grooves are formed in the two sides of fork feet on the shifting fork respectively and matched with the inserts. A first opening is formed in the insert, a fixing device is rotationally connected in the first opening, a second opening communicated with the mounting groove is further formed in the fork foot, and the fixing device penetrates through the first opening and extends into the second opening so that the insert can be locked in the mounting groove. By means of the fixing device, when the insert is installed in the installation groove, the fixing device penetrates through the first open hole and extends into the second open hole, and the insert moves into the installation groove along the fixing device and does not incline. And the fixer limits the movement of the insert, so that the insert is kept in the mounting groove, the fork feet of the shifting fork are protected, and the smoothness during gear shifting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shift forks, in particular to a novel shift fork structure with plastic inserts. Background Art

[0002] The shift fork is a component of the automobile gearbox, connected to the shift handle, located at the lower end of the handle, and is used to shift the intermediate shift wheel to change the input and output speed ratio. The existing shift forks have the following problems in use: the fork legs of the shift fork and the shift wheel will rotate relative to each other, causing friction and causing wear of the fork legs. If they are not replaced in time after being worn to a certain extent, it will affect the safety of use; and due to the lack of a buffer component, the smoothness of the shifting is also poor. Therefore, inserts are usually added to the fork legs of the shift fork.

[0003] The existing insert is usually installed in the slot on the fork leg, and the insert is locked by the friction between the insert and the slot. However, during installation, due to the large friction, the insert is easily installed in the slot at an angle, affecting the use of the fork shift; in addition, during long-term shifting, the insert abuts against both sides of the slide groove on the synchronous gear sleeve, causing a slight displacement between the insert and the inner wall of the slot, resulting in surface wear, which in turn leads to a decrease in friction and reduced stability of the insert. Utility Model Content

[0004] The purpose of the utility model is to provide a novel fork structure with plastic inserts to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel fork structure with a plastic insert comprises a fork and an insert, wherein the insert is arranged in an I-shape; mounting grooves are respectively provided on both sides of the fork legs of the fork, and the mounting grooves are adapted to the inserts; a first opening is provided on the insert, and a fixer is rotatably connected in the first opening; a second opening connected to the mounting groove is also provided on the fork legs, and the fixer passes through the first opening and extends into the second opening to lock the insert in the mounting groove.

[0007] Furthermore, the fixer includes a cover head, to which a rotating rod is fixedly connected. The rotating rod is rotatably connected to the first opening on the insert, and a screw is also connected to the end of the rotating rod. The inner wall of the second opening is provided with an internal thread that matches the external thread on the screw.

[0008] Furthermore, a connection groove is provided on a surface of the cover away from the rotating rod.

[0009] Furthermore, a countersunk hole matched with the cover head is opened on the insert, and the countersunk hole is connected with the first opening.

[0010] Furthermore, a third opening is provided on the fork foot. The third opening has the same aperture as the second opening. When the insert block is locked in the installation groove, the external thread on the screw rod disengages from the internal thread of the second opening, and the screw rod extends into the third opening.

[0011] Furthermore, two guide rods are symmetrically arranged in the installation groove, and guide grooves adapted to the guide rods are provided on the insert block.

[0012] In the above technical solution, the beneficial effects of a novel plastic insert type fork structure provided by the present utility model are as follows:

[0013] Through the provided fixator, when the insert block is installed in the installation groove, the fixator passes through the first opening and extends into the second opening. The insert block moves along the fixator into the installation groove without tilting; and the fixator limits the movement of the insert block, so that the insert block is kept in the installation groove, thereby protecting the fork foot of the shift fork and improving the smoothness during shifting.

[0014] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of a partial enlarged structure A provided by an embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of the shift fork structure provided by an embodiment of the present utility model;

[0020] Figure 4 It is a schematic diagram of a partial enlarged structure B provided by an embodiment of the present utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional view of the fork foot provided by an embodiment of the present utility model;

[0022] Figure 6 Schematic diagram of the partial enlarged view of C provided by the embodiment of the present utility model;

[0023] Figure 7 Schematic diagram of the structure of the fixator provided by the embodiment of the present utility model.

[0024] Description of the reference numerals:

[0025] 1. Insert block; 11. First opening; 12. Counterbore; 13. Guide groove; 2. Fork; 21. Fork foot; 22. Second opening; 23. Third opening; 24. Installation groove; 25. Guide rod; 3. Fixator; 31. Cap head; 32. Rotating rod; 33. Screw; 34. External thread; 35. Internal thread; 36. Connection groove. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0027] Please refer to Figure 1-7 , a new type of plastic insert block 1 type fork 2 structure, including a fork, further including: an insert block 1, the insert block 1 is arranged in an I shape; installation grooves 24 are respectively opened on both sides of the fork foot 21 on the fork, and the installation grooves 24 are adapted to the insert block 1; a first opening 11 is opened on the insert block 1, a fixator 3 is rotatably connected in the first opening 11, and a second opening 22 communicating with the installation groove 24 is further arranged on the fork foot 21, and the fixator 3 passes through the first opening 11 and extends into the second opening 22 to lock the insert block 1 in the installation groove 24.

[0028] When installing the insert block 1 in the installation groove 24, the fixator 3 passes through the first opening 11 and extends into the second opening 22, and the insert block 1 moves along the fixator 3 into the installation groove 24 without tilting; and the fixator 3 limits the movement of the insert block 1, so that the insert block 1 is kept in the installation groove 24, thereby protecting the fork foot 21 of the fork.

[0029] Further, the fixator 3 includes a cap head 31, a rotating rod 32 is fixedly connected to the cap head 31, the rotating rod 32 is rotatably connected in the first opening 11 on the insert block 1, a screw 33 is further connected to the end of the rotating rod 32, and an internal thread 35 adapted to the external thread 34 on the screw 33 is arranged on the inner wall of the second opening 22.

[0030] Pass the screw rod 33 through the first opening 11 on the insert block 1 and extend it into the second opening 22. Drive the rotating rod 32 and the screw rod 33 to rotate through the cap head 31. The rotation of the screw rod 33 causes the external thread 34 to mesh with the internal thread 35. Since the insert block 1 is limited by the installation groove 24, the cap head 31 drives the insert block 1 to move towards the installation groove 24 until the insert block 1 completely moves into the installation groove 24.

[0031] Furthermore, a connection groove 36 is formed on the surface of the cap head 31 away from the rotating rod 32. The connection groove 36 can be a spline groove, a cross groove, a slotted crosshead, etc., so as to facilitate the worker to use tools to rotate the fixator 3.

[0032] Furthermore, a counterbore 12 adapted to the cap head 31 is formed on the insert block 1, and the counterbore 12 communicates with the first opening 11. After the insert block 1 is installed, the cap head 31 is hidden in the counterbore 12 on the insert block 1 to prevent the insert block 1 from colliding with the synchronous gear sleeve.

[0033] Furthermore, a third opening 23 is further formed on the fork foot 21. The third opening 23 has the same aperture as the second opening 22. When the insert block 1 is locked in the installation groove 24, the external thread 34 on the screw rod 33 disengages from the internal thread 35 of the second opening 22, and the screw rod 33 extends into the third opening 23.

[0034] When the shift fork is applied to an automobile, the running of the automobile will generate vibrations, and the vibrations are likely to cause the screw rod 33 to disengage from the internal thread 35, affecting the stability of the insert block 1. And this setting makes the external thread 34 disengage from the internal thread 35 and the screw rod 33 extends into the third opening 23 when the insert block 1 is completely installed in the installation groove 24. When vibrating, since the external thread 34 abuts against the internal thread 35, the screw rod 33 cannot pass through the internal thread 35 at the second opening 22, that is, the internal thread 35 locks the screw rod 33 through the external thread 34, thereby improving the stability of the insert block 1 under vibrating conditions. It should be noted that when the insert block 1 is completely installed, the outer diameter of the rotating rod 32 corresponding to the internal thread 35 of the second opening 22 should not be greater than the inner diameter formed by the internal thread 35 to facilitate the rotating rod 32 to pass through the internal thread 35 area.

[0035] Furthermore, two guide rods 25 are symmetrically arranged in the installation groove 24, and guide grooves 13 adapted to the guide rods 25 are formed on the insert block 1. The cooperation of the guide rods 25 and the guide grooves 13 prevents the insert block 1 from being installed in the installation groove 24 obliquely.

[0036] Working principle: Align the guiding groove 13 on the insert 1 with the guiding rod 25. The screw 33 passes through the first opening 11 on the insert 1 and extends into the second opening 22. Drive the rotating rod 32 and the screw 33 to rotate through the cap 31. The rotation of the screw 33 causes the external thread 34 to engage with the internal thread 35. Since the insert 1 is limited by the installation groove 24, the cap 31 drives the insert 1 to move towards the installation groove 24 until the insert 1 completely moves into the installation groove 24. At this time, the external thread 34 disengages from the internal thread 35, and the screw 33 extends into the third opening 23. When vibrating, due to the abutment of the external thread 34 and the internal thread 35, the screw 33 cannot pass through the internal thread 35 at the second opening 22, that is, the internal thread 35 locks the screw 33 through the external thread 34, thereby improving the stability of the insert 1 under vibration conditions.

[0037] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A new type of shift fork (2) structure with a plastic insert (1), including a shift fork, characterized in that: Further comprising: An insert block (1), the insert block (1) is arranged in an I - shape; On both sides of the fork feet (21) on the shift fork, mounting grooves (24) are respectively provided, and the mounting grooves (24) are adapted to the insert block (1); A first opening (11) is provided on the insert block (1), a fixator (3) is rotatably connected in the first opening (11), a second opening (22) communicating with the mounting groove (24) is further provided on the fork feet (21), and the fixator (3) passes through the first opening (11) and extends into the second opening (22) to lock the insert block (1) in the mounting groove (24).

2. A novel structure of a shift fork (2) with a plastic insert (1) according to claim 1, characterized in that, The fixator (3) includes a cap head (31), a rotating rod (32) is fixedly connected to the cap head (31), the rotating rod (32) is rotatably connected in the first opening (11) on the insert block (1), a screw rod (33) is further connected to the end of the rotating rod (32), and internal threads (35) adapted to the external threads (34) on the screw rod (33) are provided on the inner wall of the second opening (22).

3. A novel structure of a shift fork (2) with a plastic insert (1) according to claim 2, characterized in that, A connecting groove (36) is provided on one surface of the cap head (31) away from the rotating rod (32).

4. A novel structure of a shift fork (2) with a plastic insert (1) according to claim 2, characterized in that, A counterbore (12) adapted to the cap head (31) is provided on the insert block (1), and the counterbore (12) communicates with the first opening (11).

5. A novel structure of a shift fork (2) with a plastic insert (1) according to claim 2, characterized in that, A third opening (23) is further provided on the fork feet (21), the third opening (23) has the same aperture as the second opening (22), when the insert block (1) is locked in the mounting groove (24), the external threads (34) on the screw rod (33) are disengaged from the internal threads (35) of the second opening (22), and the screw rod (33) extends into the third opening (23).

6. A novel structure of a shift fork (2) with a plastic insert (1) according to any one of claims 1 or 5, characterized in that, Two guide rods (25) are symmetrically arranged in the mounting groove (24), and guide grooves (13) adapted to the guide rods (25) are provided on the insert block (1).

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