CN218595015U - Shaft sleeve and electric vehicle motor thereof - Google Patents

Abstract

The utility model provides a shaft sleeve and an electric vehicle motor. The shaft sleeve includes a shaft sleeve body, one end of the shaft sleeve body is provided with a groove for inserting the end of the shaft body, and the other end of the shaft sleeve body is provided with a lock. A through hole through which the screw rod of the tightening screw penetrates, and the through hole communicates with the groove. The shaft sleeve of the technical solution can prevent the shaft sleeve body from falling off from the shaft body, improve the connection stability with the shaft body, and at the same time effectively prevent the wear or damage of the end of the shaft body.

Description

A shaft sleeve and its electric vehicle motor

technical field

The utility model relates to the technical field of shaft sleeves, in particular to a shaft sleeve and an electric vehicle motor thereof.

Background technique

Electric vehicle motors are the core power components of electric bicycles, electric wheelchairs, etc. We know that during the normal operation of electric vehicle motors, the end of the motor shaft is exposed to the environment, which easily leads to wear or damage to the end of the motor shaft. Therefore, the overall appearance is damaged, and it is easy to make it difficult to disassemble the locking nut on the motor shaft, resulting in inconvenience in maintenance.

The patent with the notification number CN202897124U discloses a motor shaft sleeve, which has a cylinder body, the cylinder body is provided with an inner hole matching the motor shaft, and the cylinder wall has an outwardly protruding key that matches the keyway of the motor shaft. In order to reduce the cost and prevent moisture, the cylinder body is a pulp molded product with varnish on the surface.

The above-mentioned motor shaft sleeve can only be used during packaging and transportation, and it is easy to fall off from the motor shaft, and the connection stability between the motor shaft sleeve and the motor shaft is poor.

Utility model content

The main purpose of the utility model is to provide a shaft sleeve, including but not limited to solving the technical problem that the shaft sleeve is easy to fall off from the shaft body in the prior art.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a shaft sleeve, including a shaft sleeve body, one end of the shaft sleeve body is provided with a groove for inserting the end of the shaft body, and the other end of the shaft sleeve body There is a through hole for the screw rod of the locking screw to pass through, and the through hole communicates with the groove.

The beneficial effects of the utility model are: by setting the groove, the end of the shaft body is stably placed in the groove, effectively protecting the end of the shaft body, avoiding wear or damage of the end of the shaft body, and communicating with the groove through setting through the through hole, so that the locking screw screw is connected with the shaft body after passing through the through hole, and the head of the locking screw presses the shaft sleeve body, effectively connecting the shaft sleeve body to the shaft body, and preventing the shaft sleeve body from falling off from the shaft body , Improve the connection stability between the shaft body and the shaft sleeve.

Preferably, the sleeve body is provided with a counterbore for accommodating the head of the locking screw, and the counterbore communicates with the through hole. By adopting the above structure, the head of the locking screw is placed in the shaft sleeve body, which is beneficial to reduce the quality of the shaft sleeve body and improve economic benefits. At the same time, it can also avoid wear or damage to the locking screw, and improve the connection between the shaft sleeve body and the shaft sleeve body. Shaft connection stability.

Preferably, the outer peripheral wall of the sleeve body and the end surface close to the counterbore transition through a circular arc. By adopting the above-mentioned structure, the end of the shaft sleeve body away from the motor is smooth, avoiding the injury of the installer due to an acute angle, and at the same time improving the overall aesthetics of the shaft sleeve body.

Preferably, the opening of the counterbore is provided with a chamfer. By adopting the above-mentioned structure, it is beneficial for the fast insertion of the locking screw into the through hole, and the connection efficiency of the shaft sleeve is improved.

Preferably, an accommodating groove for accommodating a lock nut is provided in the groove, and the accommodating groove is arranged on an inner wall of the groove, and the accommodating groove is annular. By adopting the above structure, the lock nut on the shaft body is accommodated in the accommodating groove, avoiding wear or damage to the lock nut, and facilitating disassembly and assembly of the lock nut.

Preferably, the surface of the shaft sleeve body is provided with a layer of anti-rust coating. By adopting the above structure, rusting of the shaft sleeve body can be avoided, the structural strength of the shaft sleeve body can be improved, and the overall appearance can be ensured at the same time.

The utility model also provides an electric vehicle motor, including a motor shaft and a locking screw, the end of the motor shaft is provided with a threaded hole for screwing the locking screw, and the electric vehicle motor also includes the above-mentioned one shaft sleeve, the end of the motor shaft is inserted into the groove, the head of the locking screw is pressed against the sleeve body, and the screw rod of the locking screw passes through the through hole Threaded connection with threaded hole.

The electric vehicle motor described above can effectively avoid the wear or damage of the end of the motor shaft during normal operation, improve the overall appearance of the electric vehicle motor, facilitate the removal of the locking nut on the motor shaft, and facilitate maintenance.

Description of drawings

Fig. 1 is the sectional view of a kind of axle sleeve of the present utility model;

Fig. 2 is a partial sectional view of an electric vehicle motor of the present invention;

Explanation of reference signs:

1. Shaft sleeve body; 11. Groove; 12. Through hole; 13. Counterbore; 14. Accommodating groove; 15. Arc; 2. Motor shaft; 21. Threaded hole; 3. Locking screw; 4. fasten the screw nut.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back" etc. are based on the The orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a reference to the utility model. limits.

As shown in Figures 1 to 2, the utility model provides a shaft sleeve, including a shaft sleeve body 1, the material of the shaft sleeve body 1 is metal, and one end of the shaft sleeve body 1 is provided with a The other end of the sleeve body 1 is provided with a through hole 12 for the screw rod of the locking screw 3 to penetrate, and the through hole 12 communicates with the groove 11.

The bushing body 1 is provided with a counterbore 13 for accommodating the head of the locking screw 3, and the counterbore 13 communicates with the through hole 12, so that the head of the locking screw 3 is placed in the bushing In the body 1, it is beneficial to reduce the mass of the shaft sleeve body 1, improve economic benefits, and at the same time avoid wear or damage to the head of the locking screw 3, and improve the connection stability between the shaft sleeve body 1 and the shaft body.

In order to avoid the harm to installers caused by acute angles, the outer peripheral wall of the shaft sleeve body 1 and the end surface close to the counterbore 13 are transitioned through a circular arc 15, thereby making the end of the shaft sleeve body 1 away from the motor smooth, preventing scratches, and at the same time, To improve the overall aesthetics of the shaft sleeve body 1, the opening of the counterbore 13 is provided with chamfers.

The groove 11 is provided with an accommodating groove 14 for accommodating the locking nut 4, the accommodating groove 14 is arranged on the inner wall of the groove 11, and the accommodating groove 14 is annular, thus making The lock nut 4 on the shaft body is accommodated in the accommodation groove 14 to avoid wear or damage to the lock nut 4 and facilitate the disassembly and assembly of the lock nut 4 .

In order to prevent the shaft sleeve body 1 from rusting, the surface of the shaft sleeve body 1 is provided with a layer of anti-rust coating, thereby improving the structural strength of the shaft sleeve body 1 while ensuring the overall appearance.

The utility model also provides an electric vehicle motor, including a motor shaft 2 and a locking screw 3, the end of the motor shaft 2 is provided with a threaded hole 21 threadedly connected to the locking screw 3, and the electric vehicle motor also includes the above In the bushing, the end of the motor shaft 2 is inserted into the groove 11, the head of the locking screw 3 is pressed against the bushing body 1, and the locking screw The screw rod of 3 passes through the through hole 12 and is threadedly connected with the threaded hole 21. The electric vehicle motor can effectively avoid the wear or damage of the end of the motor shaft 2 during normal operation, and improve the overall performance of the electric vehicle motor. It is beautiful and beneficial to dismantling the locking nut 4 on the motor shaft 2, which is convenient for maintenance.

Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims (7)

1. A shaft sleeve, comprising a shaft sleeve body (1), characterized in that, one end of the shaft sleeve body (1) is provided with a groove (11) for inserting the end of the shaft body, and the shaft sleeve body (1) ) The other end is provided with a through hole (12) for the screw rod of the locking screw (3) to penetrate, and the through hole (12) communicates with the groove (11). 2. A bushing according to claim 1, characterized in that, the bushing body (1) is provided with a counterbore (13) for accommodating the head of the locking screw (3), and the counterbore (13) communicates with said through hole (12). 3. A bushing according to claim 2, characterized in that the outer peripheral wall of the bushing body (1) and the end surface close to the counterbore (13) transition through a circular arc (15). 4. A shaft sleeve according to claim 2, characterized in that, the opening of the counterbore (13) is provided with a chamfer. 5. A bushing according to claim 1, characterized in that, the groove (11) is provided with an accommodating groove (14) for accommodating the lock nut (4), and the accommodating groove (14) is arranged on the inner wall of the groove (11), and the accommodating groove (14) is annular. 6. A bushing according to claim 1, characterized in that, the surface of the bushing body (1) is provided with a layer of anti-rust coating. 7. An electric vehicle motor, comprising a motor shaft (2) and a locking screw (3), the end of the motor shaft (2) is provided with a threaded hole (21) that is threadedly connected to the locking screw (3), its It is characterized in that the electric vehicle motor also includes a bushing according to any one of claims 1-6, the end of the motor shaft (2) is inserted into the groove (11), the The head of the locking screw (3) is pressed against the sleeve body (1), and the threaded rod of the locking screw (3) passes through the through hole (12) and is threadedly connected with the threaded hole (21) .

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