Dustproof and waterproof structure for rotating shaft on outer side of motor hub

Abstract

The utility model relates to the technical field of motor hubs, and discloses a motor hub outer side rotating shaft dustproof and waterproof structure which comprises a hub body, a rotating shaft is arranged in the hub body, one end of the hub body is fixedly connected with an oil seal, a sealing assembly is arranged in the oil seal, and the sealing assembly is used for conducting dustproof and waterproof on the hub. A connecting assembly is arranged on the outer wall of the oil seal and used for connecting the oil seal and the hub body. The sealing assembly comprises an outer sealing ring, and the outer sealing ring is fixedly connected to the interior of the oil seal. In the utility model, the outer sealing ring is used as a first defense line to block dust and moisture, the inner sealing ring is in close fit with the rotating shaft and can deform along with the rotation of the rotating shaft, and meanwhile, the spring applies pressure to the sealing assembly, so that the effect of sustainable and stable sealing is realized; the problems that a single rubber sealing ring is prone to being abraded or deformed due to long-time friction and vibration, and the sealing effect is gradually reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor hub technical field especially relates to a motor hub outside side rotary shaft dustproof waterproof structure. BACKGROUND

[0002] In modern industry and daily life, the application of motor is extremely wide, and the motor hub as an important component of motor, its working environment is often more complex, faces the threat of dust, moisture and other pollutants, especially in outdoor operation, humid environment or dusty industrial scene, if the motor hub outside side rotary shaft lacks effective protection, dust and moisture can easily invade the motor, which not only affects the normal operation of the motor, but also causes damage to the internal parts of the motor, shortens the service life of the motor, the emergence of the motor hub outside side rotary shaft dustproof waterproof structure aims to solve the problem that the rotary shaft is easily invaded by dust and moisture when the motor operates in harsh environment, ensures that the motor can stably and reliably operate, improves the durability and working efficiency of the motor, and protects the normal operation of equipment in various motor application scenarios.

[0003] The traditional motor hub dustproof waterproof structure usually adopts a relatively simple sealing method, and the common method is to use a single rubber sealing ring for sealing at the connection between the motor rotary shaft and the hub, relying on the elasticity of the rubber to fill the gap and prevent dust and moisture from entering.

[0004] However, the traditional motor hub dustproof waterproof technology is difficult to maintain good sealing effect in long-term operation and complex working conditions, in the actual operation process of the motor, especially in the environment with large vibration for a long time, the single rubber sealing ring is easy to wear or deform due to long-time friction and vibration, which leads to the gradual decline of the sealing effect, once the sealing ring has a gap, dust and moisture will enter the motor through the gap, and then affect the performance and service life of the motor, therefore, the motor hub outside side rotary shaft dustproof waterproof structure is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a motor hub outside side rotary shaft dustproof waterproof structure, which aims at improving the problem that the single rubber sealing ring in the prior art is easy to wear or deform due to long-time friction and vibration, which leads to the gradual decline of the sealing effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model relates to a motor wheel hub outside side rotation axis dustproof waterproof structure, including wheel hub body, the wheel hub body inside is provided with rotation axis, wheel hub body one end is fixedly connected with oil seal, the oil seal inside is provided with sealing assembly, sealing assembly is used for dustproof waterproof to wheel hub, the oil seal outer wall is provided with connecting assembly, connecting assembly is used for connecting oil seal and wheel hub body,

[0008] The sealing assembly includes an outer sealing ring, the outer sealing ring is fixedly connected inside the oil seal, the outer sealing ring is fixedly connected with a skeleton inside, the skeleton is fixedly connected with an inner sealing ring inside, the inner sealing ring is in contact with the rotating shaft;

[0009] As a further description of the above technical solution:

[0010] The connecting assembly includes two limiting blocks two, which are fixedly connected in an annular array on the outer wall of the oil seal.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the oil seal is fixedly connected with two clamping blocks one in an annular array, and each of the two clamping blocks one is provided with a sliding groove two inside.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the wheel hub body is fixedly connected with two limiting blocks one in an annular array, and each of the two limiting blocks one is slidingly connected inside the two sliding grooves two.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the wheel hub body is fixedly connected with two clamping blocks two in an annular array, and each of the two clamping blocks two is provided with a sliding groove one on the temple.

[0017] As a further description of the above technical solution:

[0018] The oil seal is sleeved with a bolt inside, and each of the two limiting blocks two is slidingly connected inside the two sliding grooves one.

[0019] As a further description of the above technical solution:

[0020] The oil seal is provided with a spring inside, and the spring is used to apply pressure to the sealing assembly.

[0021] The utility model has the advantages of:

[0022] 1. The utility model discloses, outer sealing ring as the first line of defense blocks dust and moisture, skeleton supports outer sealing ring and maintains stable shape, inner sealing ring is closely matched with rotating shaft and can deform along with its rotation, and spring exerts pressure to sealing assembly simultaneously, realized the effect of sustainable stable sealing, solved the problem that single rubber sealing ring is easy to produce abrasion or deformation because of long -time friction, vibration, leads to the sealing effect gradually drops, thereby improved the service life of motor wheel hub.

[0023] 2. The utility model discloses, through rotating oil seal makes the cooperation and connection of card block no. 1, limit block no. 2 with limit block no. 1, card block no. 2 respectively, and utilizes bolt to fix oil seal and wheel hub body, realized the effect that oil seal is convenient to dismouting, solved the problem that traditional oil seal installation and dismounting are inconvenient, and when maintaining or replacing, time -consuming and labor -intensive, thereby improved the convenience of motor wheel hub maintenance. ACCURACY

[0024] Figure 1 It is a three-dimensional schematic view of the utility model discloses a motor wheel hub outside rotating shaft dustproof waterproof structure is proposed;

[0025] Figure 2 It is an oil seal structure schematic view of the utility model discloses a motor wheel hub outside rotating shaft dustproof waterproof structure is proposed;

[0026] Figure 3 It is a spring structure schematic view of the utility model discloses a motor wheel hub outside rotating shaft dustproof waterproof structure is proposed;

[0027] Figure 4 It is a skeleton structure schematic view of the utility model discloses a motor wheel hub outside rotating shaft dustproof waterproof structure is proposed.

[0028] Legend:

[0029] 1, wheel hub body;2, rotating shaft;3, oil seal;4, outer sealing ring;5, skeleton;6, inner sealing ring;7, spring;8, card block no. 1;9, card block no. 2;10, limit block no. 1;11, limit block no. 2;12, sliding slot no. 1;13, sliding slot no. 2;14, bolt. SPECIFIC IMPLEMENTATION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0031] REFERENCE Figures 1-4The utility model provides an embodiment: a motor wheel hub outside dustproof waterproof structure of rotating shaft, including wheel hub body 1, wheel hub body 1 inside is provided with rotating shaft 2, wheel hub body 1 one end is fixedly connected with oil seal 3, oil seal 3 not only prevents the invasion of external moisture, dust, can effectively keep lubricating oil, reduce friction, improve motor efficiency, oil seal 3 inside is provided with sealing assembly, and sealing assembly is used for dustproof waterproof to wheel hub, and oil seal 3 outer wall is provided with connecting assembly, and connecting assembly is used for connecting oil seal 3 with wheel hub body 1,

[0032] Sealing assembly includes outer sealing ring 4, and outer sealing ring 4 is fixedly connected in oil seal 3, and the effect of outer sealing ring 4 is to provide first protective barrier, and resist the invasion of external material, and outer sealing ring 4 is fixedly connected with framework 5 in, and the main role of framework 5 is to support outer sealing ring 4, makes it keep stable shape, prevents outer sealing ring 4 from deforming failure due to long-term stress, and framework 5 is fixedly connected with inner sealing ring 6 in, and inner sealing ring 6 is in contact with rotating shaft 2, prevents the liquid and dirt around rotating shaft 2 from entering the sealed area, and oil seal 3 is provided with spring 7 in, and spring 7 is used to exert pressure to sealing assembly, to keep the close contact between sealing ring and rotating shaft 2, ensure sealing effect.

[0033] Specifically, first, outer sealing ring 4 is fixedly connected in oil seal 3, it is as first line of defense, and the main role is to prevent the dust, moisture and other materials from the outside into the inside of motor, because the material elasticity of outer sealing ring 4, it can closely adhere to the contact surface between motor shell and oil seal 3, keep long-time sealing effect, framework 5 is the lining structure of outer sealing ring 4, is responsible for providing support, for keeping the stability of shape and structure of outer sealing ring 4, prevents outer sealing ring 4 from deforming or losing elasticity in the process of use, inner sealing ring 6 directly cooperates with rotating shaft 2, it forms two sealing barriers of inside and outside with outer sealing ring 4, inner sealing ring 6 can deform slightly with the rotation of rotating shaft 2, to adapt to the movement of rotating shaft 2, prevent dust, moisture and other into rotating parts, oil seal 3 is also provided with spring 7, and the main role of spring 7 is to provide continuous pressure for sealing assembly, ensure that sealing ring can keep close contact in the rotating process of rotating shaft 2, prevent the penetration of dust and moisture due to the small gap generated by vibration or rotation, when the motor is running, rotating shaft 2 will produce slight vibration, and spring 7 can timely correct these changes, ensure that the sealing part is always in close contact state, guarantee sealing effect.

[0034] Refer to Figures 1-3The connecting assembly comprises two limiting blocks two 11 fixedly connected in a ring array on the outer wall of the oil seal 3, the outer wall of the oil seal 3 is fixedly connected with two clamping blocks one 8 in a ring array, the inner part of each of the two clamping blocks one 8 is provided with a sliding groove two 13, the outer wall of the hub body 1 is fixedly connected with two limiting blocks one 10 in a ring array, the limiting blocks one 10 are matched with the sliding groove two 13 of the clamping blocks one 8 to realize the limiting and guiding functions, so that the oil seal 3 is kept in the correct position, the two limiting blocks one 10 are respectively slidably connected in the two sliding grooves two 13, the outer wall of the hub body 1 is fixedly connected with two clamping blocks two 9 in a ring array, the temporal part of each of the two clamping blocks two 9 is provided with a sliding groove one 12, the oil seal 3 is sleeved with a bolt 14, the bolt 14 is fastened with other fixed elements through threads, so that the oil seal 3 is fixedly connected with the hub body 1, and the two limiting blocks two 11 are respectively slidably connected in the two sliding grooves one 12.

[0035] Specifically, when the oil seal 3 and the internal sealing assembly are installed, the oil seal 3 needs to be sleeved on the outer wall of the rotating shaft 2 first, at this time, it is necessary to ensure that one end of the oil seal 3 is in contact with the outer wall of the hub body 1, then the oil seal 3 needs to be rotated to drive the clamping blocks one 8 and the limiting blocks two 11 on the outer wall to rotate, the clamping blocks one 8 and the limiting blocks two 11 will contact with the limiting blocks one 10 and the clamping blocks two 9 on the outer wall of the hub body 1 during the rotation process to form a preliminary fixing effect, the clamping blocks one 8 will slide into the outer wall of the limiting blocks one 10 through the sliding groove two 13 in the clamping blocks one 8 during the rotation process, and the limiting blocks two 11 will slide into the limiting blocks two 11 through the sliding groove one 12, so that the oil seal 3 and the hub body 1 are fixedly connected, after the installation is completed, the bolt 14 is used to fix the oil seal 3 and the hub body 1 together to ensure that the oil seal 3 will not be loose or fall off due to the movement of the rotating shaft 2.

[0036] Working principle: in use, the motor hub is first composed of an outer sealing ring 4, a framework 5 and an inner sealing ring 6. The outer sealing ring 4 is fixedly connected inside the oil seal 3 and is the first line of defense against dust and moisture from the outside. The framework 5 is fixedly connected inside the outer sealing ring 4 and serves to support the outer sealing ring 4 to ensure that it maintains a stable shape during long-term use, thereby maintaining good sealing performance. The inner sealing ring 6 is the part that directly cooperates with the rotating shaft 2 and can be slightly deformed with the rotation of the rotating shaft 2 to ensure that no gap is formed during rotation and that dust and water cannot enter from the rotating shaft 2. At the same time, the spring 7 inside the oil seal 3 exerts pressure on the sealing assembly. When the motor is running and the rotating shaft 2 vibrates, the spring 7 can make the sealing assembly tightly adhere to the rotating shaft 2 to prevent the formation of a gap that allows dust and water to enter. When installing the oil seal 3 and the sealing assembly inside it, first, the oil seal 3 is sleeved on the outer wall of the rotating shaft 2 and the one end of the oil seal 3 is made to adhere to one end of the hub body 1. At this time, the oil seal 3 is rotated to make the outer wall of the clamping block 8 and the limiting block 11 rotate. The clamping block 8 and the limiting block 11 will contact the limiting block 10 and the clamping block 9 on the outer wall of the hub body 1 during rotation, thereby making the clamping block 8 and the sliding groove 13 inside it slide into the outer wall of the limiting block 10. At the same time, the limiting block 11 will slide into the sliding groove 12 inside the limiting block 11, so that the hub body 1 and the oil seal 3 are connected. Then, the bolt 14 is tightened between the oil seal 3 and the hub body 1 to complete the fixation, thereby achieving the effect of facilitating the disassembly of the oil seal 3.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dustproof and waterproof structure of an outer shaft of an electric machine wheel hub, comprising a wheel hub body (1), characterized in that: The hub body (1) is internally provided with a rotating shaft (2), one end of the hub body (1) is fixedly connected with an oil seal (3), the oil seal (3) is internally provided with a sealing assembly, the sealing assembly is used for dustproof and waterproof of the hub, an outer wall of the oil seal (3) is provided with a connecting assembly, the connecting assembly is used for connecting the oil seal (3) and the hub body (1); The sealing assembly comprises an outer sealing ring (4), the outer sealing ring (4) is fixedly connected inside the oil seal (3), a skeleton (5) is fixedly connected inside the outer sealing ring (4), an inner sealing ring (6) is fixedly connected inside the skeleton (5), and the inner sealing ring (6) is in contact with the rotating shaft (2).

2. The dustproof and waterproof structure of the outer shaft of the motor hub according to claim 1, characterized in that: The connecting assembly comprises two limiting blocks two (11), and the two limiting blocks two (11) are fixedly connected in an annular array on the outer wall of the oil seal (3).

3. The dustproof and waterproof structure of the outer shaft of the motor hub according to claim 2, characterized in that: The outer wall of the oil seal (3) is fixedly connected with two clamping blocks one (8) in an annular array, and the two clamping blocks one (8) are both internally provided with a sliding groove two (13).

4. The dustproof and waterproof structure of the outer shaft of the motor hub according to claim 3, characterized in that: The outer wall of the hub body (1) is fixedly connected with two limiting blocks one (10) in an annular array, and the two limiting blocks one (10) are respectively slidably connected inside the two sliding grooves two (13).

5. The dustproof and waterproof structure of the outer shaft of the motor hub according to claim 4, characterized in that: The outer wall of the hub body (1) is fixedly connected with two clamping blocks two (9) in an annular array, and the two clamping blocks two (9) are both provided with a sliding groove one (12) at the temple.

6. The dustproof and waterproof structure of the outer shaft of the motor hub according to claim 5, characterized in that: The oil seal (3) is internally provided with a bolt (14), and the two limiting blocks two (11) are respectively slidably connected inside the two sliding grooves one (12).

7. The dustproof and waterproof structure of the outer shaft of the motor hub according to claim 1, characterized in that: The oil seal (3) is internally provided with a spring (7), and the spring (7) is used for applying pressure to the sealing assembly.

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