Novel automobile steering gear input shaft

Abstract

The utility model discloses a novel automobile steering gear input shaft, which comprises a fixed shaft, a connecting shaft, a connecting piece and a transmission gear, the fixed shaft and the connecting shaft are respectively inserted at two ends of the connecting piece, the transmission gear is fixedly arranged at one end of the fixed shaft, the connecting piece adopts a cylindrical structure, and an annular groove is arranged on the outer edge of the connecting piece. Four movable frame plates are arranged on the inner side of the annular groove at equal intervals in a surrounding mode, the inner sides of the movable frame plates are fixedly connected with positioning insertion rods for fixing the fixing shafts and the connecting shafts, and guide sliding frames are symmetrically installed on the outer sides of the movable frame plates. The novel automobile steering gear input shaft is reasonable in structural design and convenient to use, quick connection between the shaft body and the connector is formed in a clamping mode, dismounting or mounting can be carried out without tools, time and labor are saved in operation, the replacement and maintenance progress is improved to the maximum extent, and the service life of the automobile steering gear input shaft is prolonged. In addition, the stability between the shaft body and the connector can be effectively guaranteed in the using process, and high practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a novel automotive steering input shaft. Background Technology

[0002] A search revealed a patent document, CN201621245365.1, which discloses "an input shaft for an automobile steering gear." This input shaft is a shaft with a power output gear at its end, which meshes with the power output end of the steering gear. The power input end of the shaft is connected to the automobile steering shaft via a universal joint. The shaft includes a split connecting shaft and a fixed shaft. One end of the fixed shaft is fixedly connected to the power output gear and is an integral structure. The other end is fixedly connected to one end of the connecting shaft via a connector. The other end of the connecting shaft is the power input end of the entire shaft. The surface of the connecting shaft is provided with an anti-rust layer. The connector is a clamp that is adjusted by bolt connection. The fixed shaft is made of 20MnCr5, and the connecting shaft is made of 35# steel. This steering gear input shaft reduces costs, greatly improves rust resistance, and significantly enhances the overall durability of the input shaft.

[0003] In practical use, this patent uses bolts to connect the connector and the shaft. When disassembling, tools such as wrenches are required, which is laborious and reduces the replacement or maintenance process, resulting in low practicality. Therefore, we propose a new type of automotive steering input shaft to solve the problems mentioned in the background technology. Utility Model Content

[0004] The purpose of this invention is to provide a novel automotive steering input shaft to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel automotive steering input shaft, comprising a fixed shaft, a connecting shaft, a connecting member, and a transmission gear. The fixed shaft and the connecting shaft are respectively inserted into both ends of the connecting member. The transmission gear is fixedly installed at one end of the fixed shaft. The connecting member has a cylindrical structure and an annular groove is provided on its outer edge.

[0006] Furthermore, four movable frame plates are equidistantly arranged around the inner side of the annular groove. The inner side of each movable frame plate is fixedly connected with a positioning rod for fixing the fixed shaft and the connecting shaft. Guide slides are symmetrically installed on the outer side of each movable frame plate. Guide grooves that are adapted to the guide slides are opened at the top and bottom of the inner wall of the annular groove.

[0007] Furthermore, a vertical plate is fixedly connected between the top and bottom of the inner wall of the annular groove and at the position corresponding to the movable frame plate. A screw is threadedly connected to the vertical plate. A cover sleeve is fixedly installed on the outer side of the movable frame plate. One end of the screw passes through the inside of the cover sleeve and is fixedly connected to a rotating block. The rotating block is movably connected to the cover sleeve.

[0008] Furthermore, the connector has insertion holes at both the top and bottom for inserting the fixing shaft and the connecting shaft. A positioning block is fixedly connected to the inner wall of the insertion hole, and the positioning block has a rectangular cross-sectional shape.

[0009] Furthermore, a through hole is provided between the insertion hole and the annular groove corresponding to the position of the positioning rod. Locking holes adapted to the positioning rod are provided on the surfaces of both the fixed shaft and the connecting shaft. Positioning holes adapted to the positioning block are provided at one end of both the fixed shaft and the connecting shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] When installing the fixed shaft and connecting shaft, this utility model inserts one end into the two insertion holes on the connector, respectively. The positioning block initially positions the two shafts, aligning the locking holes on their surfaces with multiple through holes and the positioning rod. During connection, the four screws on the outer side rotate sequentially. Through the threaded connection with the vertical plate, the rotating block rotates to one side of the shaft. Using the guide slide and guide groove for limiting, the rotating block pushes the cover sleeve and moving frame plate inward, allowing the positioning rod to pass through the corresponding through hole and insert into the locking hole on the fixed shaft and connecting shaft, thus forming a fixed connection. Similarly, when removing the two shafts, simply reverse the above steps. This novel automotive steering input shaft has a reasonable structural design and is easy to use. It uses a snap-fit ​​method to form a quick connection between the shaft and the connector, eliminating the need for tools during removal or installation, saving time and effort, greatly improving the replacement and maintenance process, and effectively ensuring the stability between the shaft and the connector during use, making it highly practical. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a half-sectional three-dimensional structural diagram of the connector of this utility model;

[0014] Figure 3 This is a cross-sectional view of the connector of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the movable shelf of this utility model.

[0016] In the diagram: 1. Fixed shaft, 2. Connecting shaft, 3. Connecting piece, 4. Transmission gear, 5. Annular groove, 6. Moving frame plate, 7. Positioning rod, 8. Guide slide, 9. Guide groove, 10. Vertical plate, 11. Screw, 12. Covering sleeve, 13. Rotating block, 14. Insertion hole, 15. Positioning block, 16. Through hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 A novel automotive steering input shaft includes a fixed shaft 1, a connecting shaft 2, a connector 3, and a transmission gear 4. The fixed shaft 1 and the connecting shaft 2 are respectively inserted into the two ends of the connector 3. The transmission gear 4 is fixedly installed at one end of the fixed shaft 1. The connector 3 has a cylindrical structure and an annular groove 5 on its outer edge.

[0019] Specifically, four movable frame plates 6 are arranged equidistantly around the inner side of the annular groove 5. The inner side of the movable frame plate 6 is fixedly connected with positioning rods 7 for fixing the fixed shaft 1 and the connecting shaft 2. The outer side of the movable frame plate 6 is symmetrically equipped with guide slides 8. The top and bottom of the inner wall of the annular groove 5 are provided with guide grooves 9 that are adapted to the guide slides 8.

[0020] Specifically, a vertical plate 10 is fixedly connected between the top and bottom of the inner wall of the annular groove 5 and at the position corresponding to the movable frame plate 6. A screw 11 is threaded onto the vertical plate 10. A cover sleeve 12 is fixedly installed on the outer side of the movable frame plate 6. One end of the screw 11 passes through the inside of the cover sleeve 12 and is fixedly connected to a rotating block 13. The rotating block 13 is movably connected to the cover sleeve 12.

[0021] Specifically, the top and bottom of the connector 3 are provided with insertion holes 14 for the fixed shaft 1 and the connecting shaft 2 to be inserted. A positioning block 15 is fixedly connected to the inner wall of the insertion hole 14. The cross-sectional shape of the positioning block 15 is rectangular.

[0022] Specifically, a through hole 16 is provided between the insertion hole 14 and the annular groove 5 corresponding to the position of the positioning rod 7. Locking holes adapted to the positioning rod 7 are provided on the surfaces of the fixed shaft 1 and the connecting shaft 2. Positioning holes adapted to the positioning block 15 are provided at one end of the fixed shaft 1 and the connecting shaft 2. A rectangular positioning block 15 is provided. After the two shafts are inserted into the two insertion holes 14 respectively, the multiple locking holes on their surfaces can be aligned with the multiple through holes 16 and the multiple positioning rods 7, which is beneficial for the accurate insertion of the positioning rods 7 on the inner side when the moving frame plate 6 is moved.

[0023] This new type of automotive steering input shaft features a reasonable structural design and is easy to use. It adopts a snap-fit ​​method to form a quick connection between the shaft and the connector, eliminating the need for tools during disassembly or installation. This saves time and effort, greatly improving the replacement and maintenance process. Furthermore, it effectively ensures the stability between the shaft and the connector during use, making it highly practical.

[0024] Working principle: When it is necessary to install the fixed shaft 1 and the connecting shaft 2, one end of each shaft is inserted into the two insertion holes 14 on the connector 3. The positioning block 15 is used to initially position the two shafts, so that the locking holes on their surfaces are aligned with multiple sets of through holes 16 and the positioning rod 7. During connection, the four screws 11 on the outside are rotated in sequence. Through the threaded connection with the vertical plate 10, the rotating block 13 can be driven to rotate and move to one side of the shaft. With the limit of the guide slide 8 and the guide slide 9, the rotating block 13 will push the cover sleeve 12 and the moving frame plate 6 to move inward, so that the positioning rod 7 passes through the corresponding through hole 16 and is inserted into the locking hole on the fixed shaft 1 and the connecting shaft 2, thus forming a fixation. Similarly, when removing the two shafts, simply reverse the above steps.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel automotive steering input shaft, comprising a fixed shaft (1), a connecting shaft (2), a connecting member (3), and a transmission gear (4), characterized in that: The fixed shaft (1) and the connecting shaft (2) are respectively inserted into the two ends of the connector (3). The transmission gear (4) is fixedly installed at one end of the fixed shaft (1). The connector (3) adopts a cylindrical structure and has an annular groove (5) on its outer edge.

2. The novel automotive steering input shaft according to claim 1, characterized in that: The inner side of the annular groove (5) is provided with four movable frame plates (6) at equal intervals. The inner side of the movable frame plate (6) is fixedly connected with a positioning rod (7) for fixing the fixed shaft (1) and the connecting shaft (2). The outer side of the movable frame plate (6) is symmetrically installed with guide slides (8). The top and bottom of the inner wall of the annular groove (5) are provided with guide grooves (9) that are adapted to the guide slides (8).

3. The novel automotive steering input shaft according to claim 2, characterized in that: A vertical plate (10) is fixedly connected between the top and bottom of the inner wall of the annular groove (5) and at the position corresponding to the movable frame plate (6). A screw (11) is threaded onto the vertical plate (10). A cover sleeve (12) is fixedly installed on the outside of the movable frame plate (6). One end of the screw (11) passes through the inside of the cover sleeve (12) and is fixedly connected to a rotating block (13). The rotating block (13) is movably connected to the cover sleeve (12).

4. A novel automotive steering input shaft according to claim 3, characterized in that: The connector (3) has insertion holes (14) at its top and bottom for inserting the fixing shaft (1) and the connecting shaft (2). A positioning block (15) is fixedly connected to the inner wall of the insertion hole (14). The positioning block (15) has a rectangular cross-sectional shape.

5. A novel automotive steering input shaft according to claim 4, characterized in that: A through hole (16) is connected between the insertion hole (14) and the annular groove (5) to the position of the positioning rod (7). The surfaces of the fixed shaft (1) and the connecting shaft (2) are provided with locking holes that are compatible with the positioning rod (7). One end of the fixed shaft (1) and the connecting shaft (2) is provided with a positioning hole that is compatible with the positioning block (15).

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