A motor shaft sleeve

Abstract

This utility model belongs to the technical field of motor accessories, specifically relating to a motor bushing, including a protective sleeve. The protective sleeve is circular, with one end open. A protrusion is provided on the side wall of the protective sleeve, the protrusion being equal in length to the protective sleeve. The inner side of the protective sleeve is filled with a rust-proof layer that fits the protrusion. A sealing ring is fixedly connected to the open end face of the protective sleeve. The rust-proof layer includes a cotton absorbent layer, with a non-woven fabric layer adhered to its inner surface, and a rubber layer adhered to its inner surface. The rubber layer has several evenly distributed through holes on its surface. This utility model provides a lubrication layer inside the protective sleeve, which can provide long-term rust protection for the shaft. The shaft surface is protected by a layer of oil film, preventing rusting in humid environments, thereby improving the shaft's precision and lifespan.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor accessories, specifically relating to a motor bushing. Background Technology

[0002] Motor bushings are typically used to protect the output shaft of a motor. After the motor is assembled, plastic bushings are usually fitted onto the shaft to prevent damage, corrosion, or deformation of the output shaft.

[0003] The bushings currently in use are generally thin plastic shells. Although they can provide protection, many motor shafts are made of carbon steel, which is prone to rust in humid environments. This makes it impossible to prevent rust from forming on the shaft. On the one hand, it affects the accuracy of the shaft when transmitting power to external devices, and on the other hand, it affects the lifespan of the shaft. Utility Model Content

[0004] The purpose of this invention is to provide a motor bushing that can have a lubrication layer inside the protective sleeve, which can provide long-term rust protection for the shaft.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A motor bushing includes a protective sleeve, which is circular and has an open end. The protective sleeve has a protrusion on its side wall, the protrusion being equal in length to the protective sleeve. The inner side of the protective sleeve is filled with an anti-rust layer that is adapted to the protrusion. A sealing ring is fixedly connected to the open end face of the protective sleeve.

[0007] Furthermore, the anti-rust layer includes a cotton adsorption layer, a non-woven fabric layer is bonded to the inner surface of the cotton adsorption layer, a rubber layer is bonded to the inner surface of the non-woven fabric layer, and a plurality of uniformly distributed through holes are formed on the surface of the rubber layer.

[0008] Furthermore, the cotton absorbent layer is filled with rust-preventive liquid.

[0009] Furthermore, a plastic film is adhered to the inner surface of the rubber layer.

[0010] Furthermore, the rust-proof layer and the protective sleeve are bonded together using double-sided adhesive.

[0011] Furthermore, a gasket is fixedly connected to the end face of the sealing ring.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This utility model discloses a motor bushing that, through the cooperation of a protective sleeve, a protrusion, and a rust-proof layer, provides a lubrication layer inside the protective sleeve, which can provide long-term rust protection for the shaft. This allows the shaft surface to be protected by a layer of oil film, preventing rusting in humid environments and thus improving the shaft's precision and lifespan. Attached Figure Description

[0014] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the end face structure of the protective sleeve according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the structural distribution of the anti-rust layer in an embodiment of this utility model;

[0017] Figure 4 This is a schematic diagram of the sealing ring structure of an embodiment of this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Protective cover; 2. Raised part; 3. Rust-proof layer; 4. Plastic film; 5. Cotton absorbent layer; 6. Non-woven fabric layer; 7. Rubber layer; 8. Sealing ring; 9. Gasket. Detailed Implementation

[0020] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0021] like Figures 1-4 As shown, a motor bushing includes a protective sleeve 1, which is circular and has an open end. The protective sleeve 1 has a protrusion 2 on its side wall, which is equal in length to the protective sleeve 1. The inner side of the protective sleeve 1 is filled with an anti-rust layer 3, which is adapted to the protrusion 2. A sealing ring 8 is fixedly connected to the open end face of the protective sleeve 1.

[0022] Specifically, the protective sleeve 1 protects the motor shaft and also serves the following functions:

[0023] Moisture isolation: Moisture is one of the key factors causing metal to rust. During storage, motors may be in environments with high humidity, such as damp basements. Motor bushings can isolate the shaft from the humid air or liquid water, preventing direct contact between moisture and the shaft, thus fundamentally reducing the possibility of the shaft rusting.

[0024] To improve the rust resistance of the shaft, the shaft surface is usually coated with protective coatings such as rust-preventive paint and zinc plating. However, during the installation, disassembly, and operation of the motor, these coatings may be damaged by external forces such as friction and impact. The protective sleeve 1 can provide additional protection for the protective coating, reduce the chance of damage, ensure the integrity of the protective coating, and thus better perform its rust-preventive function.

[0025] like Figure 2 and Figure 3 As shown, the anti-rust layer 3 includes a cotton adsorption layer 5, a non-woven fabric layer 6 is bonded to the inner surface of the cotton adsorption layer 5, a rubber layer 7 is bonded to the inner surface of the non-woven fabric layer 6, and a number of uniformly distributed through holes are formed on the surface of the rubber layer 7.

[0026] The cotton adsorption layer 5 is made of compressed cotton material, which has a strong adsorption capacity. Rust-preventive liquid can be pre-injected into the cotton adsorption layer 5. When in use, the rust-preventive liquid can be easily discharged by peeling off the plastic film 4, so that the rust-preventive liquid can be evenly coated on the surface of the shaft, thereby achieving the rust-preventive effect. Furthermore, the shaft is in direct contact with the rubber layer 7, which can further protect the shaft. When the motor or shaft collides, the rubber layer 7 has a good buffering effect due to its flexibility and elasticity.

[0027] The cotton absorbent layer 5 is filled with rust inhibitor. After the protective sleeve 1 has been used for a period of time, if the rust inhibitor dries out or the amount decreases, the protective sleeve 1 can be removed, and the rust inhibitor can be injected back into the through hole using a syringe or other instruments to achieve the purpose of recycling and effectively extend the protection time of the shaft.

[0028] like Figure 2 As shown, a plastic film 4 is adhered to the inner surface of the rubber layer 7. The plastic film 4 can be directly adsorbed onto the surface of the rubber layer 7, or it can be adsorbed by electrostatic adsorption or by adhesive bonding, which will not be described in detail in this solution.

[0029] The rust-preventive layer 3 and the protective sleeve 1 are bonded together using double-sided adhesive. Double-sided adhesive is preferred in this design, but other bonding methods such as hot melt adhesive, spot adhesive, or nano-adhesive can also be selected according to assembly process requirements.

[0030] like Figure 4 As shown, a gasket 9 is fixedly connected to the end face of the sealing ring 8. Rusting of the shaft is essentially a process of oxidation between metal and oxygen. The sealed or semi-sealed environment formed by the protective sleeve 1 effectively reduces the oxygen content around the shaft, lowering the rate of oxidation. Especially in industrial environments containing corrosive gases, the protective sleeve 1 can prevent the combined action of oxygen and corrosive gases from causing rust on the shaft. The gasket 9, made of rubber or plastic, further enhances the sealing performance of the shaft and reduces the probability of moisture entering the interior of the protective sleeve 1.

[0031] The working principle of this utility model is as follows: When in use, first peel off the plastic film 4 to expose the rubber layer 7, so that the anti-rust liquid can pass through the through hole and be coated on the inner surface of the rubber layer 7. Then, insert the protective sleeve 1 into the motor shaft, and at the same time, the sealing ring 8 abuts against the end of the motor to play a sealing role and further improve the anti-rust performance.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A motor bushing, characterized in that: Includes a protective sleeve (1), which is circular and has an open structure at one end. The protective sleeve (1) has a protrusion (2) on its side wall, the protrusion (2) being equal in length to the protective sleeve (1). The inner side of the protective sleeve (1) is filled with an anti-rust layer (3), which is adapted to the protrusion (2). A sealing ring (8) is fixedly connected to the open end face of the protective sleeve (1).

2. The motor bushing according to claim 1, characterized in that: The rust-proof layer (3) includes a cotton adsorption layer (5), a non-woven fabric layer (6) is bonded to the inner surface of the cotton adsorption layer (5), a rubber layer (7) is bonded to the inner surface of the non-woven fabric layer (6), and a number of uniformly distributed through holes are opened on the surface of the rubber layer (7).

3. The motor bushing according to claim 2, characterized in that: The cotton absorbent layer (5) is filled with rust-preventive liquid.

4. A motor bushing according to claim 2, characterized in that: A plastic film (4) is adhered to the inner surface of the rubber layer (7).

5. A motor bushing according to claim 1, characterized in that: The rust-proof layer (3) and the protective sleeve (1) are bonded together with double-sided adhesive.

6. A motor bushing according to claim 1, characterized in that: A gasket (9) is fixedly connected to the end face of the sealing ring (8).

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