Waterproof structure of motor rotating shaft

Abstract

The application discloses a motor rotating shaft waterproof structure in the technical field of motor rotating shafts, which comprises a rotating shaft body, a waterproof bearing, a motor end cover, an oil seal and a sealing cover. The waterproof bearing is sleeved on the outer side wall of the rotating shaft body. The motor end cover is sleeved on the outer side wall of the waterproof bearing. The oil seal is clamped on the outer side wall of the rotating shaft body and located at the right side of the waterproof bearing. The sealing cover is sleeved on the outer side wall right side of the rotating shaft body and located at the right side of the oil seal. The motor rotating shaft waterproof structure has a reasonable structure design, does not need to customize a special rotating shaft, can reduce the use cost of the motor rotating shaft, can be provided with multiple waterproof sealing devices on the outer side of the rotating shaft, can improve the sealing effect of the motor rotating shaft, can store a large amount of lubricating oil through the first oil storage ring and the second oil storage ring, can continuously lubricate the rotating shaft, and thus can improve the service life of the rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of motor shaft technology, specifically a waterproof structure for a motor shaft. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque and serve as a power source for electrical appliances or various machines. The motor shaft used in conjunction with the motor is the output end of the motor, which is used for the power connection and transmission of the motor.

[0003] Existing motor shafts are designed to be used in conjunction with the motor's specifications. Due to installation limitations, the shaft length is often insufficient, necessitating the customization of shafts of sufficient length, which increases operating costs. Furthermore, existing motor shafts rely on simple sealing bearings for sealing, which becomes increasingly ineffective over time, leading to water ingress and motor damage. Additionally, the shaft requires lubrication during high-speed rotation, which rapidly depletes over time, increasing friction and reducing its lifespan. Therefore, we propose a waterproof structure for motor shafts. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproof structure for a motor shaft, addressing the issues raised in the background section. Existing motor shafts are designed to be used in conjunction with the motor's specifications. Due to installation location issues, the shaft length is often insufficient, necessitating the customization of a shaft of sufficient length. Furthermore, existing motor shafts rely on simple sealing bearings for sealing, which leads to a continuous decrease in waterproofing effectiveness over prolonged use. Additionally, the shaft requires lubrication during high-speed rotation, which rapidly depletes the lubricating oil, increasing friction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waterproof structure for a motor shaft, comprising a shaft body, a waterproof bearing, a motor end cover, an oil seal, and a sealing cover. The waterproof bearing is sleeved on the outer side wall of the shaft body, the motor end cover is sleeved on the outer side wall of the waterproof bearing, the oil seal is snapped onto the outer side wall of the shaft body and located to the right of the waterproof bearing, and the sealing cover is sleeved on the right side of the outer side wall of the shaft body and located to the right of the oil seal.

[0006] Preferably, the right end of the rotating shaft body has a slot, the inner cavity of the slot is fitted with a block, the right end of the block is integrally formed with a connecting shaft, and the slot and the block are triangular in shape.

[0007] Preferably, a fixing screw is sleeved between the inner cavity of the rotating shaft body and the connecting shaft, and a nut is screwed to the left side of the outer wall of the fixing screw, the nut being embedded in the left end of the rotating shaft body.

[0008] Preferably, the outer side wall of the rotating shaft body has a limiting groove, which is arranged sequentially from left to right. The inner cavity of the limiting groove is engaged with a limiting ring, and the top of the limiting ring is provided with an opening.

[0009] Preferably, the inner sidewall of the motor end cover has a first mounting groove arranged from left to right, and the inner cavity of the first mounting groove is fitted with a first sealing ring. The inner sidewall of the right side of the motor end cover is integrally formed with a fixing platform.

[0010] Preferably, a sealing seat is integrally formed around the outer side of the left side wall of the oil seal. The sealing seat is circular in shape and has an air bladder inside, which is evenly distributed.

[0011] Preferably, a first oil storage ring is fixedly connected to the left side of the inner wall of the sealing cap, and arranged sequentially from left to right; a second oil storage ring is fixedly connected to the inner side of the right side wall of the sealing cap, and arranged sequentially from the inside to the outside.

[0012] Preferably, the inner wall of the sealing cover is integrally formed with a sealing cylinder, and the inner wall of the sealing cylinder has a second mounting groove arranged from left to right, and a second sealing ring is engaged in the inner cavity of the second mounting groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The waterproof structure of this motor shaft uses triangular slots and blocks. The blocks are engaged with the slots to mate and install the connecting shaft. A fixing screw passes through the shaft body and the connecting shaft and is screwed to the left side of the fixing screw with a nut. Rotating the fixing screw firmly fixes the connecting shaft. By mate and extend the length of the shaft body, there is no need to customize a special shaft, which can reduce the cost of using the motor shaft.

[0015] 2. The waterproof structure of the motor shaft has a first mounting groove on the inner side of the motor end cover, and a first sealing ring is installed in the first mounting groove. The first sealing ring can seal and waterproof between the motor end cover and the waterproof bearing. Furthermore, a sealing seat is provided on the left side of the oil seal, and an air bladder is provided inside the sealing seat. By squeezing the oil seal, the sealing seat is squeezed by the internal air bladder, so that the sealing seat and the motor end cover are tightly fitted. Thus, a multi-layer waterproof sealing device can be provided on the outside of the shaft, which can improve the sealing effect of the motor shaft.

[0016] 3. The waterproof structure of the motor shaft is achieved by using a first oil reservoir ring and a second oil reservoir ring on the left side of the sealing cover, and multiple of them are provided. By squeezing lubricating oil into multiple first oil reservoir rings and multiple second oil reservoir rings, a large amount of lubricating oil can be stored through the first oil reservoir rings and the second oil reservoir rings, which can continuously lubricate the shaft and thus improve the service life of the shaft. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the oil seal structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the sealing cap structure from the left side of the present invention;

[0021] Figure 5 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 100, rotating shaft body; 110, slot; 120, locking block; 121, connecting shaft; 130, fixing screw; 131, nut; 140, limiting groove; 141, limiting ring; 200, waterproof bearing; 300, motor end cover; 310, first mounting groove; 311, first sealing ring; 320, fixing platform; 400, oil seal; 410, sealing seat; 420, airbag; 500, sealing cover; 510, first oil reservoir ring; 520, second oil reservoir ring; 530, sealing cylinder; 531, second mounting groove; 532, second sealing ring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1:

[0026] Please see Figure 2 and Figure 6This invention provides a technical solution: a waterproof structure for a motor shaft, comprising a shaft body 100, a waterproof bearing 200, a motor end cover 300, an oil seal 400, and a sealing cover 500. The waterproof bearing 200 is sleeved on the outer wall of the shaft body 100, the motor end cover 300 is sleeved on the outer wall of the waterproof bearing 200, the oil seal 400 is snapped onto the outer wall of the shaft body 100 and located to the right of the waterproof bearing 200, and the sealing cover 500 is sleeved on the right side of the outer wall of the shaft body 100 and located to the right of the oil seal 400. A groove 110 is formed at the right end of the shaft body 100, and a locking block 120 is snapped into the inner cavity of the groove 110. A connecting shaft 121 is integrally formed at the right end of the locking block 120. The groove 110 and the locking block 120 are triangular in shape. A fixed joint is sleeved between the inner cavities of the shaft body 100 and the connecting shaft 121. A fixed lead screw 130 is screwed to the left side of its outer wall. The nut 131 is embedded in the left end of the rotating shaft body 100. The outer wall of the rotating shaft body 100 has a limiting groove 140 arranged from left to right. The inner cavity of the limiting groove 140 is fitted with a limiting ring 141. The top of the limiting ring 141 has an opening. The connecting shaft 121 is connected and installed by the locking block 120 and the locking groove 110. The fixed lead screw 130 passes through the rotating shaft body 100 and the connecting shaft 121 and is screwed to the left side of the fixed lead screw 130 by the nut 131. Rotating the fixed lead screw 130 firmly fixes the connecting shaft 121. By connecting and extending the length of the rotating shaft body 100, it is not necessary to customize a special rotating shaft, which can reduce the use cost of the motor rotating shaft.

[0027] Example 2:

[0028] Please see Figure 2 , Figure 3 and Figure 5This invention provides a technical solution: a waterproof structure for a motor shaft, comprising a shaft body 100, a waterproof bearing 200, a motor end cover 300, an oil seal 400, and a sealing cover 500. The waterproof bearing 200 is sleeved on the outer wall of the shaft body 100, the motor end cover 300 is sleeved on the outer wall of the waterproof bearing 200, the oil seal 400 is snapped onto the outer wall of the shaft body 100 and located to the right of the waterproof bearing 200, and the sealing cover 500 is sleeved on the right side of the outer wall of the shaft body 100 and located to the right of the oil seal 400. A first mounting groove 310 is formed around the inner wall of the motor end cover 300, arranged sequentially from left to right. A first sealing ring 311 is snapped into the inner cavity of the first mounting groove 310. A fixing platform 320 is integrally formed around the inner side of the right side wall of the motor end cover 300. The oil seal 400... A sealing seat 410 is integrally formed around the outer side of the left side wall. The sealing seat 410 is circular in shape and contains air bladders 420 evenly distributed inside. A first mounting groove 310 is opened on the inner side of the motor end cover 300, and a first sealing ring 311 is installed in the first mounting groove 310. The first sealing ring 311 can seal and waterproof between the motor end cover 300 and the waterproof bearing 200. The sealing seat 410 on the left side of the oil seal 400 contains air bladders 420. By pressing the oil seal 400, the sealing seat 410 is compressed by the internal air bladders 420, so that the sealing seat 410 is tightly fitted to the motor end cover 300. Thus, a multi-layer waterproof sealing device can be provided on the outer side of the shaft, which can improve the sealing effect of the motor shaft.

[0029] Example 3:

[0030] Please see Figure 4-6This invention provides a technical solution: a waterproof structure for a motor shaft, comprising a shaft body 100, a waterproof bearing 200, a motor end cover 300, an oil seal 400, and a sealing cover 500. The waterproof bearing 200 is sleeved on the outer wall of the shaft body 100, the motor end cover 300 is sleeved on the outer wall of the waterproof bearing 200, the oil seal 400 is snapped onto the outer wall of the shaft body 100 and located to the right of the waterproof bearing 200, and the sealing cover 500 is sleeved on the right side of the outer wall of the shaft body 100 and located to the right of the oil seal 400. A first oil reservoir ring 510 is fixedly connected to the left side of the inner wall of the sealing cover 500, and they are arranged sequentially from left to right. The inner side of the right side wall of the sealing cover 500 is circumferentially... A second oil reservoir ring 520 is fixedly connected and arranged sequentially from the inside to the outside. A sealing cylinder 530 is integrally formed on the inner side wall of the sealing cover 500. A second mounting groove 531 is opened on the inner side wall of the sealing cylinder 530 and arranged sequentially from left to right. A second sealing ring 532 is engaged in the inner cavity of the second mounting groove 531. Through the first oil reservoir ring 510 and the second oil reservoir ring 520 provided on the left side of the sealing cover 500, and multiple first oil reservoir rings 510 and multiple second oil reservoir rings 520, lubricating oil can be squeezed into multiple first oil reservoir rings 510 and multiple second oil reservoir rings 520. The first oil reservoir rings 510 and the second oil reservoir rings 520 can store a large amount of lubricating oil, which can continuously lubricate the shaft, thereby improving the service life of the shaft.

[0031] In practical use, when installing the motor shaft, those skilled in the art install the rotor onto the shaft body 100, engage the left limiting ring 141 into the left limiting groove 140, install the shaft body 100 and rotor into the motor housing, install the motor end cover 300 onto the motor, and fit the waterproof bearing 200 onto the shaft body 100. The motor end cover 300 has a first mounting groove 310 on its inner side, and a first sealing ring 311 is installed within the first mounting groove 310. The first sealing ring 311 seals the space between the motor end cover 300 and the waterproof bearing 200. The middle limiting ring 141 is then engaged into the limiting groove 140. The oil seal 400 is fitted onto the shaft body 100, and the oil seal 400 is installed by compression. The sealing seat 410 is compressed by the internal air bladder 420. Press to make the sealing seat 410 fit tightly against the motor end cover 300, and then snap the right limit ring 141 into the limit groove 140. After installation, put the sealing cover 500 onto the rotating shaft body 100. The sealing cover 500 has a first oil storage ring 510 and a second oil storage ring 520 on the left side, and there are multiple of them. By squeezing lubricating oil into multiple first oil storage rings 510 and multiple second oil storage rings 520, the sealing cover 500 is fixed on the fixed platform 320. When the length of the rotating shaft body 100 is insufficient when the motor is in use, the locking block 120 is snapped into the locking groove 110 to connect and install the connecting shaft 121. The fixing screw 130 passes through the rotating shaft body 100 and the connecting shaft 121, and is screwed to the left side of the fixing screw 130 by the nut 131. Rotate the fixing screw 130 to firmly fix the connecting shaft 121.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, features in the embodiments disclosed herein can be combined in any way, provided there is no structural conflict. The lack of an exhaustive description of these combinations in this specification is merely for brevity and resource conservation. Therefore, the invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A waterproof structure for a motor shaft, characterized in that: The device includes a shaft body (100), a waterproof bearing (200), a motor end cover (300), an oil seal (400), and a sealing cover (500). The waterproof bearing (200) is sleeved on the outer side wall of the shaft body (100), the motor end cover (300) is sleeved on the outer side wall of the waterproof bearing (200), the oil seal (400) is snapped onto the outer side wall of the shaft body (100) and is located on the right side of the waterproof bearing (200), and the sealing cover (500) is sleeved on the right side of the outer side wall of the shaft body (100) and is located on the right side of the oil seal (400). The oil seal (400) has a sealing seat (410) integrally formed around the outer side of its left side wall. The sealing seat (410) is circular in shape and has an air bladder (420) inside, which is evenly distributed. The sealing cap (500) has a first oil storage ring (510) fixedly connected to the left side of its inner wall, and the rings are arranged from left to right. The sealing cap (500) has a second oil storage ring (520) fixedly connected to the inner side of its right side wall, and the rings are arranged from inside to outside. The inner wall of the sealing cover (500) is integrally formed with a sealing cylinder (530), and the inner wall of the sealing cylinder (530) has a second mounting groove (531) arranged from left to right. The inner cavity of the second mounting groove (531) is fitted with a second sealing ring (532).

2. The waterproof structure for a motor shaft according to claim 1, characterized in that: The right end of the rotating shaft body (100) has a slot (110), and a locking block (120) is engaged in the inner cavity of the slot (110). The right end of the locking block (120) has an integrally formed connecting shaft (121). The slot (110) and the locking block (120) are triangular in shape.

3. The waterproof structure for a motor shaft according to claim 1, characterized in that: A fixing screw (130) is sleeved between the inner cavity of the rotating shaft body (100) and the connecting shaft (121). A nut (131) is screwed onto the left side of the outer wall of the fixing screw (130). The nut (131) is embedded in the left end of the rotating shaft body (100).

4. The waterproof structure for a motor shaft according to claim 1, characterized in that: The outer side wall of the rotating shaft body (100) has a limiting groove (140) arranged from left to right. The inner cavity of the limiting groove (140) is fitted with a limiting ring (141), and the top of the limiting ring (141) has an opening.

5. The waterproof structure for a motor shaft according to claim 1, characterized in that: The inner sidewall of the motor end cover (300) has a first mounting groove (310) arranged from left to right. The inner cavity of the first mounting groove (310) is fitted with a first sealing ring (311). The inner sidewall of the right side of the motor end cover (300) is integrally formed with a fixing platform (320).

Images