Transmission shaft structure

Abstract

The utility model provides a transmission shaft structure, which relates to the technical field of auto spare parts, and comprises a circular shaft and a flange plate, a connecting mechanism is arranged between the circular shaft and the flange plate, the connecting mechanism comprises a positioning block and a positioning groove, the positioning block is fixedly arranged at the upper end of the circular shaft, the positioning groove is arranged in the middle of the upper surface of the flange plate in a penetrating manner, and the positioning block is arranged in the positioning groove. Knurling patterns are arranged on the outer side of the positioning block, and the positioning block and the positioning groove are connected in a press fit mode through an interference press fit technology. According to the utility model, the transmission shaft is divided into the circular shaft and the flange plate to be produced respectively, and then the circular shaft and the flange plate are pressed and connected through interference pressing and knurling patterns after the production is finished, and the whole process is formed by combining automatic small-sized equipment, so that the input cost is low, the production efficiency is high, no pollution is caused, and no harm is caused to a user; and meanwhile, the overall operation intensity is also reduced, and the operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a transmission shaft structure. Background Art

[0002] As a key component in the mechanical transmission system, the manufacturing process of the drive shaft often involves complex processes and high-precision equipment. The traditional drive shaft production method usually relies on large equipment such as high-frequency high-temperature furnaces and thousand-ton forging machines, which not only increases the manufacturing cost, but also limits the production efficiency. At the same time, the high-frequency high-temperature furnace will produce a lot of exhaust gas during use, consume a lot of electricity, pollute the environment, and the operator is in a high-temperature state, which is very easy to hurt the operator. The thousand-ton forging is also a high-risk equipment, which generates a lot of noise and impact during operation. Therefore, we propose a drive shaft structure to solve the above problems. Utility Model Content

[0003] The main purpose of the utility model is to provide a transmission shaft structure, which solves the problem that the traditional transmission shaft production method usually needs to rely on large equipment such as high-frequency high-temperature furnaces and thousand-ton forging machines, which not only increases the manufacturing cost, but also limits the production efficiency. At the same time, the high-frequency high-temperature furnace will produce a large amount of exhaust gas during use, consume a lot of electricity, pollute the environment, and the operator is in a high-temperature state, which is very easy to hurt the operator. The thousand-ton forging is also a high-risk equipment, which generates a lot of noise and impact during operation.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A transmission shaft structure comprises a round shaft and a flange, a connecting mechanism is provided between the round shaft and the flange, the connecting mechanism comprises a positioning block and a positioning groove, the positioning block is fixedly installed on the upper end of the round shaft, the positioning groove runs through the middle of the upper surface of the flange, a knurled pattern is provided on the outer side of the positioning block, the positioning block and the positioning groove are pressed and connected by an interference pressing process, a threaded hole is provided on the upper end of the positioning block, a connecting groove is provided on the inner lower end of the threaded hole, a plurality of clamping blocks are clamped and installed between the positioning block and the positioning groove, and the ends of the clamping blocks close to each other are respectively movably installed in the inner part of the connecting groove, a threaded block is threadedly installed in the inner part of the threaded hole, a limiting block is fixedly installed on the lower end of the threaded block, the limiting block is clamped and installed in the inner part of the connecting groove, and the limiting block and the clamping block are fitted together, a connecting ring is movably installed on the outer upper end of the threaded block, the connecting ring is clamped and installed on the inner upper end of the threaded hole, and a plurality of positioning rods are installed on the lower end of the connecting ring, and the positioning rods are respectively clamped and installed between the positioning block and the clamping block.

[0006] Preferably, a sliding block is fixedly mounted on one side of the connecting ring close to the threaded block, and the sliding block is movably mounted inside the threaded block.

[0007] Preferably, a plurality of engaging grooves are provided between the positioning block and the positioning groove, and the engaging grooves correspond to each other one by one, the ends of the engaging grooves close to each other are respectively connected to the connecting grooves, and the engaging blocks are respectively engaged and installed inside the overlapping engaging grooves.

[0008] Preferably, a push block is fixedly mounted on the outer side of the limit block, and the push block is in close contact with the engaging block.

[0009] Preferably, a plurality of auxiliary plates are installed on the outer side of the connecting ring, a plurality of auxiliary grooves are provided at the upper end of the threaded hole, and the auxiliary plates are respectively snap-fitted and installed inside the auxiliary grooves.

[0010] Preferably, a positioning hole is provided between the auxiliary groove and the engaging block, the positioning rods are respectively engaged and installed inside the positioning holes, and the upper ends of the positioning rods are connected to the auxiliary plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) In the utility model, the transmission shaft is divided into two parts, a round shaft and a flange, which are produced separately. After the production is completed, they are pressed and connected by interference pressing and knurling patterns. The whole process only needs to be assembled by small-scale automated equipment, which has low investment cost, high production efficiency, no pollution, no harm to users, and is more convenient for automated management. At the same time, it also reduces the overall work intensity and is more convenient.

[0013] (2) In the utility model, after the interference fit between the round shaft and the flange is completed, the user can install the threaded block through the thread, so that the threaded block drives the limit block to move into the connecting groove, and the limit block cooperates with the push block to push the locking block. At the same time, the threaded block will also drive the positioning rod to position the positioning block and the locking block, so that the round shaft, flange, positioning block and locking block form a whole, so that it has sufficient strength for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a transmission shaft structure of the utility model;

[0015] Figure 2 This is a front view structural diagram of a transmission shaft structure of the utility model;

[0016] Figure 3 The utility model is a transmission shaft structure Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0017] Figure 4 The utility model is a transmission shaft structure Figure 3The enlarged structural diagram at B in the middle;

[0018] Figure 5 The utility model is a transmission shaft structure Figure 4 The enlarged structural diagram at C in the middle;

[0019] Figure 6 The utility model is a transmission shaft structure Figure 4 Enlarged structural diagram at D in the middle.

[0020] In the figure: 1, round shaft; 2, flange; 3, connecting mechanism; 301, positioning block; 302, positioning groove; 303, threaded block; 304, threaded hole; 305, limit block; 306, connecting groove; 307, connecting ring; 308, slider; 309, auxiliary plate; 310, auxiliary groove; 311, positioning rod; 312, positioning hole; 313, snap block; 314, snap groove; 315, push block. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 6 As shown, the embodiment of the utility model proposes a transmission shaft structure, including a round shaft 1 and a flange 2, a connecting mechanism 3 is provided between the round shaft 1 and the flange 2, the connecting mechanism 3 includes a positioning block 301 and a positioning groove 302, the positioning block 301 is fixedly installed on the upper end of the round shaft 1, the positioning groove 302 is arranged through the middle of the upper surface of the flange 2, the outer side of the positioning block 301 is provided with a knurled pattern, the positioning block 301 and the positioning groove 302 are pressed and connected by an interference pressing process, the upper end of the positioning block 301 is provided with a threaded hole 304, the inner lower end of the threaded hole 304 is provided with a connecting groove 306, and a plurality of clips are installed between the positioning block 301 and the positioning groove 302. The engaging block 313 is movably mounted on the inner side of the connecting groove 306 at one end of the engaging block 313, and the ends of the engaging blocks 313 close to each other are respectively movably mounted on the inner side of the connecting groove 306, the inner side of the threaded hole 304 is threadedly mounted with a threaded block 303, the lower end of the threaded block 303 is fixedly mounted with a limit block 305, the limit block 305 is snap-fitted and mounted on the inner side of the connecting groove 306, and the limit block 305 and the engaging block 313 are in contact with each other, a connecting ring 307 is movably mounted on the outer upper end of the threaded block 303, the connecting ring 307 is snap-fitted and mounted on the inner upper end of the threaded hole 304, a plurality of positioning rods 311 are mounted on the lower end of the connecting ring 307, and the positioning rods 311 are respectively snap-fitted and mounted between the positioning block 301 and the engaging block 313.

[0023] like Figures 1 to 6 As shown, in another embodiment of the present invention, a slider 308 is fixedly installed on one side of the connecting ring 307 close to the threaded block 303, and the slider 308 is movably installed inside the threaded block 303. A plurality of engaging grooves 314 are provided between the positioning block 301 and the positioning groove 302, and the engaging grooves 314 correspond to each other. The ends of the engaging grooves 314 close to each other are respectively connected to the connecting grooves 306. The engaging blocks 313 are respectively engaged and installed in the mutually overlapping engaging grooves 314. The stop block 305 is A push block 315 is fixedly installed on the outside, and the push block 315 is fitted with the locking block 313. A plurality of auxiliary plates 309 are installed on the outside of the connecting ring 307. A plurality of auxiliary grooves 310 are provided at the upper end of the threaded hole 304. The auxiliary plates 309 are respectively snap-fitted and installed inside the auxiliary grooves 310. Positioning holes 312 are provided between the auxiliary grooves 310 and the locking block 313. Positioning rods 311 are respectively snap-fitted and installed inside the positioning holes 312. The upper ends of the positioning rods 311 are connected to the auxiliary plates 309.

[0024] The circular shaft 1 is turned by a lathe, and the flange 2 is punched by a common punch press. After the circular shaft 1 is turned, the surface of the positioning block 301 is knurled. After the surface processing of the positioning block 301 is completed, the user inserts the clamping block 313 into the inside of the clamping groove 314 and the connecting groove 306 respectively, so that the clamping block 313 is initially formed as a whole with the positioning block 301. Then, the user can perform interference pressing on the positioning block 301 and the positioning groove 302 by a common press to form a whole between the circular shaft 1 and the flange 2. Then, the user pushes the clamping block 313 to move along the clamping groove 314, so that the clamping groove 314 is clamped into the clamping grooves 314 that overlap with each other. Inside, the auxiliary positioning block 301 is connected with the positioning groove 302, and then the user inserts the limit block 305 and the positioning rod 311 into the connection groove 306 and the positioning hole 312 respectively, and then the threaded block 303 can be controlled to move downward along the threaded hole 304 through the thread, so that the threaded block 303 drives the limit block 305 and the positioning rod 311 to move downward, so that the limit block 305 cooperates with the push block 315 to push the engaging block 313 tightly, and the positioning rod 311 will be inserted into the positioning hole 312 to position the engaging block 313 and the positioning block 301, so that the round shaft 1, the positioning block 301, the engaging block 313 and the flange 2 form a whole, and the installation is completed;

[0025] During the rotation of the threaded block 303, the slider 308 can not only assist the threaded block 303 in rotating, but also drive the connecting ring 307 and the auxiliary plate 309 to move downward, so that the auxiliary plate 309 can stably drive the positioning rod 311 to be inserted, thereby improving the overall stability.

[0026] The working principle of this transmission shaft structure:

[0027] When in use, first, the round shaft 1 is turned by a lathe, and the flange 2 is punched by a common punch press. Then, after the turning of the round shaft 1 is completed, the surface of the positioning block 301 is knurled. After the surface processing of the positioning block 301 is completed, the user inserts the clamping block 313 into the inside of the clamping groove 314 and the connecting groove 306 respectively, so that the clamping block 313 is initially formed as a whole with the positioning block 301. Then, the user can use a common press to perform interference pressing on the positioning block 301 and the positioning groove 302 to form a whole between the round shaft 1 and the flange 2. Then, the user pushes the clamping block 313 to move along the clamping groove 314, so that the clamping groove 314 is clamped into the overlapping clamping grooves. The auxiliary positioning block 301 is connected to the positioning groove 302 inside 314, and then the user inserts the limit block 305 and the positioning rod 311 into the connecting groove 306 and the positioning hole 312 respectively, and then the threaded block 303 can be controlled to move downward along the threaded hole 304 through the thread, so that the threaded block 303 drives the limit block 305 and the positioning rod 311 to move downward, and the limit block 305 cooperates with the push block 315 to push the locking block 313 tightly, and the positioning rod 311 will be inserted into the positioning hole 312 to position the locking block 313 and the positioning block 301, so that the round shaft 1, the positioning block 301, the locking block 313 and the flange 2 form a whole to complete the installation.

[0028] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A transmission shaft structure, comprising a round shaft (1) and a flange (2), characterized in that: A connecting mechanism (3) is provided between the circular shaft (1) and the flange (2), and the connecting mechanism (3) comprises a positioning block (301) and a positioning groove (302). The positioning block (301) is fixedly mounted on the upper end of the circular shaft (1), and the positioning groove (302) is arranged through the middle of the upper surface of the flange (2). A knurled pattern is provided on the outer side of the positioning block (301). The positioning block (301) and the positioning groove (302) are pressed together by an interference fit process. A threaded hole (304) is provided on the upper end of the positioning block (301), and a connecting groove (306) is provided at the inner lower end of the threaded hole (304). A plurality of snap-fit ​​blocks (313) are snap-fitted and installed between the positioning block (301) and the positioning groove (302), and the snap-fit ​​blocks (313) are provided in a manner that the positioning block (301) and the positioning groove (302) are in a position to engage with each other. ) are movably mounted on one end of the threaded hole (304) and the other end thereof is mounted on the inside of the connecting groove (306). A threaded block (303) is mounted on the inside of the threaded hole (304) by means of a thread. A limit block (305) is fixedly mounted on the lower end of the threaded block (303). The limit block (305) is snap-fitted and mounted on the inside of the connecting groove (306). The limit block (305) and the snap-fit ​​block (313) are in close contact with each other. A connecting ring (307) is movably mounted on the upper end of the outer side of the threaded block (303). The connecting ring (307) is snap-fitted and mounted on the upper end of the inner side of the threaded hole (304). A plurality of positioning rods (311) are mounted on the lower end of the connecting ring (307). The positioning rods (311) are snap-fitted and mounted between the positioning block (301) and the snap-fit ​​block (313).

2. A transmission shaft structure according to claim 1, characterized in that: A sliding block (308) is fixedly mounted on one side of the connecting ring (307) close to the threaded block (303), and the sliding block (308) is movably mounted inside the threaded block (303).

3. A transmission shaft structure according to claim 1, characterized in that: A plurality of engaging grooves (314) are provided between the positioning block (301) and the positioning groove (302), and the engaging grooves (314) correspond to each other one by one. The ends of the engaging grooves (314) close to each other are respectively connected to the connecting grooves (306), and the engaging blocks (313) are respectively engaged and installed inside the mutually overlapping engaging grooves (314).

4. A transmission shaft structure according to claim 1, characterized in that: A push block (315) is fixedly mounted on the outer side of the limit block (305), and the push block (315) is in close contact with the engaging block (313).

5. A transmission shaft structure according to claim 1, characterized in that: A plurality of auxiliary plates (309) are installed on the outer side of the connecting ring (307), a plurality of auxiliary grooves (310) are provided at the upper end of the threaded hole (304), and the auxiliary plates (309) are respectively engaged and installed inside the auxiliary grooves (310).

6. A transmission shaft structure according to claim 5, characterized in that: A positioning hole (312) is provided between the auxiliary groove (310) and the engaging block (313), and the positioning rods (311) are respectively engaged and installed inside the positioning holes (312), and the upper ends of the positioning rods (311) are connected to the auxiliary plate (309).

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