Impact resistant high gas tight motor shaft

Abstract

The utility model discloses a kind of impact-resistant high air-tightness motor shaft, belong to motor rotating shaft technical field, including motor body, the inside rotation of motor body is connected with transmission shaft, the one end fixedly connected with connector of transmission shaft away from motor body, the side surface of transmission shaft is provided with sealing assembly, the sealing assembly includes limiting sliding slot, sealing ring, limiting sliding block, sealing sleeve, sealing rubber ring, positive thread two, push sleeve, threaded hole and bolt;The utility model is set through sealing assembly, can be sealed while connecting connector and connecting piece connecting end, complete the fixation of push sleeve, avoid push sleeve to appear loose in the rotation process of transmission shaft, so as to improve the tightness and stability of sealing sleeve, sealing rubber ring and connecting piece surface bonding, effectively improve the security of connector and connecting piece connecting end, prolong the service life of both.

Description

Technical Field

[0001] This utility model belongs to the field of motor shaft technology, specifically relating to an impact-resistant and highly airtight motor shaft. Background Technology

[0002] The motor shaft is the core mechanical component of the motor. It is generally made of high-strength metals such as alloy steel and stainless steel. It is mainly used to support the rotor and make it rotate stably, while transmitting torque and converting the electromagnetic energy of the motor into mechanical energy to drive the load. It works with the bearing to achieve precise positioning of the rotor in the stator magnetic field, ensure uniform air gap between the rotor and stator, and ensure efficient operation of the motor. Its performance directly affects the stability, reliability and service life of the motor.

[0003] Chinese Patent Publication No. CN222484442U discloses a high-impact, airtight servo motor shaft, relating to the field of motor shaft technology. It includes a servo motor body, comprising a servo motor housing and a shaft assembly. The shaft assembly is inserted into the output end of the servo motor housing, and a sealing component is fitted onto the end of the shaft assembly furthest from the servo motor housing. In this utility model, the sealing component protects the mounting base and mounting point. Because the sealing sleeve is made of stainless steel, it effectively prevents damage to the connection between the shaft assembly and the mounting point. Furthermore, by rotating the limiting sleeve towards the sealing sleeve, and continuing to rotate the limiting sleeve after the squeezing sleeve contacts the sealing sleeve, the sealing sleeve is squeezed outwards. At this point, the rubber material of the sealing sleeve further improves the airtightness between the shaft assembly and the mounting point.

[0004] Although the existing device can improve the airtightness and safety of the connection at the rotating shaft assembly, the fixation of the limiting sleeve position relies entirely on the connection between the threads. Therefore, when the shaft rotates for a long time, the limiting sleeve will loosen, thereby reducing the limiting and compression of the extrusion sleeve and the sealing sleeve, and thus reducing the airtightness between the sealing sleeve and the mounting point. Utility Model Content

[0005] The purpose of this invention is to provide an impact-resistant and highly airtight motor shaft to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an impact-resistant, high-airtightness motor shaft, comprising a motor body, a drive shaft rotatably connected inside the motor body, a connector fixedly connected to the end of the drive shaft away from the motor body, a sealing assembly provided on the side surface of the drive shaft, the sealing assembly comprising a limiting groove, a sealing ring, a limiting slider, a sealing sleeve, a sealing rubber ring, a second positive thread, a pushing sleeve, a threaded hole, and a bolt, the limiting groove being arranged in a ring array on the side surface of the drive shaft, the sealing ring being movably sleeved on the outside of the drive shaft, the limiting slider being arranged in a ring array and fixedly connected to the inner surface of the sealing ring, the sealing sleeve being fixedly connected to the front end of the sealing ring, the sealing rubber ring being fixedly connected to the front end of the sealing sleeve, the second positive thread being opened on the side surface of the drive shaft, the pushing sleeve being threadedly connected to the side surface of the drive shaft, the threaded hole being arranged in a ring array on the inner wall of the side surface of the pushing sleeve, and the bolt being threadedly connected to the inside of the threaded hole.

[0007] In a preferred embodiment, the inner surface of the push sleeve is provided with a reverse thread adapted to the positive thread II, and a hexagonal block is fixedly connected to the outer surface of the push sleeve.

[0008] In a preferred embodiment, the front end of the push sleeve is rotatably connected to bearing balls in a circular array, and a helical spring is fixedly connected inside the limiting groove, with the rear end of the helical spring fixedly connected to the limiting slider.

[0009] In a preferred embodiment, the inner wall of the side surface of the connector is provided with connecting slots arranged in a ring array, the connecting slots are provided with positioning holes, and the outer surface of the connector is provided with a positive thread.

[0010] In a preferred embodiment, an expansion joint groove is provided on the inner wall of the side surface of the sealing sleeve, and a tolerance groove is provided at the front end of the sealing ring.

[0011] In a preferred embodiment, the limiting slider is adapted to the limiting groove, the bolt through thread hole is located inside the limiting groove, and the pushing sleeve is located directly behind the sealing ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the setting of the sealing component, can simultaneously seal the connection end of the connector and the connecting part, and fix the push sleeve, preventing the push sleeve from loosening during the rotation of the drive shaft. Therefore, it improves the tightness and stability of the fit between the sealing sleeve, the sealing ring and the surface of the connecting part, effectively improving the safety of the connection end of the connector and the connecting part, and extending the service life of both.

[0014] This utility model, through the elastic force of the helical spring itself, can not only apply a reaction force to the sealing ring during the movement of the sealing ring, thereby making the connection between the reverse thread and the forward thread on the inner surface of the push sleeve tighter and more stable, but also can drive the sealing ring to reset when the push sleeve is released, exposing the connection end of the connector and the connector, effectively improving the practicality and convenience of this utility model. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall two-dimensional structure of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the motor body and transmission shaft and other components of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the sealing sleeve and other components of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the push sleeve and other components of this utility model.

[0020] In the diagram: 1. Motor body; 2. Drive shaft; 3. Connector; 4. Bearing ball; 5. Helical spring; 6. Connecting slot; 7. Positioning hole; 8. First forward thread; 9. Expansion joint groove; 10. Tolerant groove; 301. Limiting slide groove; 302. Sealing ring; 303. Limiting slider; 304. Sealing sleeve; 305. Sealing rubber ring; 306. Second forward thread; 307. Pushing sleeve; 308. Threaded hole; 309. Bolt; 3071. Reverse thread; 3072. Hexagonal block. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-5This utility model provides an impact-resistant and highly airtight motor shaft, including a motor body 1. A transmission shaft 2 is rotatably connected inside the motor body 1. A connector 3 is fixedly connected to the end of the transmission shaft 2 away from the motor body 1. A sealing assembly is provided on the side surface of the transmission shaft 2. The sealing assembly includes a limiting groove 301, a sealing ring 302, a limiting slider 303, a sealing sleeve 304, a sealing rubber ring 305, a positive thread 306, a pushing sleeve 307, a threaded hole 308, and a bolt 309. The limiting groove 301 is arranged in a ring array on the side surface of the transmission shaft 2. On the side, the sealing ring 302 is movably sleeved on the outside of the drive shaft 2, the limiting slider 303 is fixedly connected to the inner surface of the sealing ring 302 in a ring array, the sealing sleeve 304 is fixedly connected to the front end of the sealing ring 302, the sealing rubber ring 305 is fixedly connected to the front end of the sealing sleeve 304, the positive thread 306 is opened on the side surface of the drive shaft 2, the push sleeve 307 is threadedly connected to the side surface of the drive shaft 2, the threaded hole 308 is opened in a ring array on the inner wall of the side surface of the push sleeve 307, and the bolt 309 is threadedly connected to the inside of the threaded hole 308.

[0024] During use, the sealing sleeve 304 and the sealing ring 305 are located outside the connector 3 and are in close contact with the surface of the connector, thereby completing the seal between the connector 3 and the connector end. The sealing assembly is configured by first connecting the connector end to the connector 3, then rotating and pushing the sleeve 307. This causes the sleeve 307 to move forward through the positive thread 306 during rotation. As the sleeve 307 moves, it pushes the sealing ring 302, causing the sealing ring 302 to pass through the limiting position. The slider 303 moves forward within the limiting groove 301, while the sealing ring 302 simultaneously causes the sealing sleeve 304 and sealing ring 305 to adhere tightly to the surface of the connector. At this point, the bolt 309 can be installed through the threaded hole 308. Simultaneously, the bottom of the bolt 309 inserts into the limiting groove 301 and abuts against its lower surface, securing the push sleeve 307 and preventing it from loosening during the rotation of the drive shaft 2. This invention, through the sealing assembly, can simultaneously seal the connector 3 and the connector's connection end while simultaneously securing the push sleeve 307, preventing it from loosening during the rotation of the drive shaft 2. This improves the tightness and stability of the fit between the sealing sleeve 304, sealing ring 305, and the connector's surface, effectively enhancing the safety of the connector 3 and the connector's connection end and extending their service life.

[0025] Specifically, such as Figure 1 and Figure 5As shown, the inner surface of the push sleeve 307 is provided with a reverse thread 3071 adapted to the forward thread 306, and a hexagonal block 3072 is fixedly connected to the outer surface of the push sleeve 307.

[0026] The installation of the hexagonal block 3072 makes it convenient for personnel to use a wrench to rotate and push the sleeve 307, effectively improving the ease of use of this utility model.

[0027] Specifically, such as Figure 1 and Figure 3 As shown, the front end of the push sleeve 307 is rotatably connected to bearing balls 4 in a ring array, and a helical spring 5 is fixedly connected inside the limiting slide groove 301. The rear end of the helical spring 5 is fixedly connected to the limiting slider 303.

[0028] The installation of bearing balls 4 reduces friction between the surfaces of the push sleeve 307 and the sealing ring 302, making the push of the push sleeve 307 onto the sealing ring 302 smoother and more fluid. In this invention, the helical spring 5, through its own elasticity, not only applies a reaction force to the sealing ring 302 during its movement, thus making the connection between the reverse thread 3071 and the forward thread 306 on the inner surface of the push sleeve 307 tighter and more stable, but also, when the push sleeve 307 is released, it causes the sealing ring 302 to reset, exposing the connection end of the connector 3 and the connecting piece, effectively improving the practicality and convenience of this invention.

[0029] The inner wall of the side surface of the connector 3 has connecting slots 6 arranged in a ring array. The connecting slots 6 have positioning holes 7 inside. The outer surface of the connector 3 has a positive thread 8.

[0030] The design of the connecting slot 6, positioning hole 7, and positive thread 8 facilitates the connection of the connector 3 to the connecting end of the connector, improving the ease of connection between the two.

[0031] Specifically, such as Figure 4 As shown, the inner wall of the side surface of the sealing sleeve 304 is provided with an expansion joint groove 9, and the front end of the sealing ring 305 is provided with a tolerance groove 10.

[0032] The expansion joint groove 9 allows the sealing sleeve 304 to expand continuously during compression, thus covering the outside of the sealing ring 305. It also increases the diameter of the sealing range and improves the sealing effect. The tolerance groove 10 not only allows the air inside the sealing sleeve 304 and the sealing ring 305 to be discharged, preventing the air from being compressed and causing damage to the sealing sleeve 304 and the sealing ring 305, but also makes the sealing ring 305 fit more closely to the surface of the connector.

[0033] The limiting slider 303 is adapted to the limiting groove 301, the bolt 309 passes through the threaded hole 308 and is located inside the limiting groove 301, and the pushing sleeve 307 is located directly behind the sealing ring 302.

[0034] The friction between the bottom of bolt 309 and the inside of the limiting groove 301 increases the safety and stability of the installation of the sleeve 307.

[0035] Working principle and usage process of this utility model:

[0036] When using this utility model, the operator first connects the connecting end of the connector to the connector head 3 through the connecting slot 6, positioning hole 7 and positive thread 8;

[0037] After connection, a wrench or other tools can be used to rotate the push sleeve 307 via the hexagonal block 3072. This causes the push sleeve 307 to move towards the front end through the forward thread 306 during rotation. As the push sleeve 307 moves, it pushes the sealing ring 302, causing the sealing ring 302 to move towards the front end through the limiting slider 303 within the limiting groove 301. Simultaneously, the sealing ring 302 causes the sealing sleeve 304 and sealing rubber ring 305 to come into close contact with the surface of the connector. At this point, the bolt 309 can be installed through the threaded hole 308. As the bolt 309 is installed, its bottom inserts into the limiting groove 301 and abuts against the lower surface of the limiting groove 301, fixing the push sleeve 307 and preventing it from loosening during the rotation of the drive shaft 2.

[0038] 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. An impact-resistant, highly airtight motor shaft, comprising a motor body (1), characterized in that: The motor body (1) is internally connected to a drive shaft (2). A connector (3) is fixedly connected to one end of the drive shaft (2) away from the motor body (1). A sealing assembly is provided on the side surface of the drive shaft (2). The sealing assembly includes a limiting groove (301), a sealing ring (302), a limiting slider (303), a sealing sleeve (304), a sealing rubber ring (305), a positive thread (306), a pushing sleeve (307), a threaded hole (308), and a bolt (309). The limiting groove (301) is arranged in a ring array on the side surface of the drive shaft (2). The sealing ring (302) is movably sleeved on the... On the outside of the drive shaft (2), the limiting slider (303) is fixedly connected to the inner surface of the sealing ring (302) in a ring array. The sealing sleeve (304) is fixedly connected to the front end of the sealing ring (302). The sealing rubber ring (305) is fixedly connected to the front end of the sealing sleeve (304). The positive thread (306) is opened on the side surface of the drive shaft (2). The pushing sleeve (307) is threadedly connected to the side surface of the drive shaft (2). The threaded hole (308) is opened on the inner wall of the side surface of the pushing sleeve (307) in a ring array. The bolt (309) is threadedly connected to the inside of the threaded hole (308).

2. The impact-resistant, high-airtightness motor shaft according to claim 1, characterized in that: The inner surface of the push sleeve (307) is provided with a reverse thread (3071) adapted to the forward thread (306), and a hexagonal block (3072) is fixedly connected to the outer surface of the push sleeve (307).

3. The impact-resistant and highly airtight motor shaft according to claim 1, characterized in that: The front end of the push sleeve (307) is rotatably connected with bearing balls (4) arranged in a ring array. The interior of the limiting slide groove (301) is fixedly connected with a helical spring (5). The rear end of the helical spring (5) is fixedly connected with the limiting slider (303).

4. The impact-resistant and highly airtight motor shaft according to claim 1, characterized in that: The inner wall of the side surface of the connector (3) is provided with connecting slots (6) arranged in a ring array. The connecting slots (6) are provided with positioning holes (7) inside. The outer surface of the connector (3) is provided with a positive thread (8).

5. The impact-resistant, high-airtightness motor shaft according to claim 1, characterized in that: The inner wall of the side surface of the sealing sleeve (304) is provided with an expansion joint groove (9), and the front end of the sealing ring (305) is provided with a fault tolerance groove (10).

6. The impact-resistant, high-airtightness motor shaft according to claim 1, characterized in that: The limiting slider (303) is adapted to the limiting groove (301), the bolt (309) passes through the threaded hole (308) located inside the limiting groove (301), and the pushing sleeve (307) is located directly behind the sealing ring (302).

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