Motor output shaft riveting structure

Abstract

The utility model discloses a riveting structure for a motor output shaft, and belongs to the technical field of motors. The structure comprises an output shaft and a gear riveted and fixed on the output shaft, the output shaft comprises a main body part and a gear fixing part extending along one end of the axial direction of the main body part, the gear is provided with a key slot hole, and the cross section of the gear fixing part is consistent with the key slot hole in shape. And the gear is matched with the gear fixing part through the key slot hole so as to be riveted and fixed on the gear fixing part. Compared with the prior art, the gear has the following beneficial effects that a round hole of a traditional gear is changed into the key groove hole, and the gear fixing part in interference fit with the key groove hole is arranged on the output shaft, so that on the premise that the gear does not slide relative to the output shaft any more, material input of an upper friction plate, a lower friction plate and grease is saved, and the cost is reduced. Therefore, the assembling process is shortened. And the labor investment during assembly is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of motors, and particularly relates to a riveting structure for a motor output shaft. Background Art

[0002] The 24BYJ stepping motor is widely used in intelligent mid-end cameras for security, air-conditioning louvers, intelligent power banks, stage lighting control platforms, intelligent toys and other fields. It plays an important role in our daily life.

[0003] For the existing 24BYJ motor, an upper friction plate and a lower friction plate need to be installed on the output shaft to relatively fix the gear and the output shaft, and oil needs to be applied to the upper friction plate and the lower friction plate for installation. This results in a large number of complex motor assembly processes, a large number of assembly workers on the production line, and high labor costs. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a riveting structure for a motor output shaft, which omits the process of installing the upper friction plate and the lower friction plate in the riveting process of the output shaft, saves material input, and thus can solve at least one technical problem involved in the background art.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] The embodiments of this application provide a riveting structure for a motor output shaft, including an output shaft and a gear riveted and fixed on the output shaft. The output shaft includes a main body portion and a gear fixing portion extending along one end of the axis direction of the main body portion. The gear is provided with a keyway hole, and the cross-section of the gear fixing portion is consistent with the shape of the keyway hole. The gear is riveted and fixed on the gear fixing portion through the cooperation of the keyway hole and the gear fixing portion.

[0007] Optionally, the keyway hole is a runway-shaped hole.

[0008] Optionally, the gear fixing portion and the keyway hole are in interference fit.

[0009] Optionally, the gear is an E gear.

[0010] Optionally, the other end of the main body portion along its axis direction is connected to the motor.

[0011] Optionally, the output shaft further includes a cylindrical first assembly positioning column extending from one end of the gear fixing portion away from the main body portion.

[0012] Optionally, the output shaft further includes a cylindrical second assembly positioning column extending from one end of the first assembly positioning column away from the gear fixing portion, and the diameter of the second assembly positioning column is smaller than that of the first assembly positioning column.

[0013] Optionally, the main body portion, the gear fixing portion, the first assembly positioning post, and the second assembly positioning post are coaxially arranged.

[0014] The present application has the following beneficial effects compared with the prior art:

[0015] 1. By changing the round hole of the traditional gear to a keyway hole and arranging a gear fixing portion on the output shaft that is in interference fit with the keyway hole, on the premise of realizing that the gear no longer slides relative to the output shaft, the material input of the upper and lower friction plates and grease is saved, thereby shortening the assembly process. And the manual input during assembly is reduced;

[0016] 2. By arranging two assembly positioning posts, the alignment difficulty during the assembly of the gear and the output shaft is effectively reduced. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0018] Figure 1 It is a schematic diagram of the overall structure of the motor output shaft riveting structure provided by the present utility model. Detailed Embodiments

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0020] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0021] Please refer to Figure 1As shown in the figure, an embodiment of the present application provides a riveting structure for a motor output shaft, including an output shaft 1 and a gear 2 riveted and fixed on the output shaft 1, and the gear 2 is an E gear.

[0022] The output shaft 1 includes a main body portion 11 and a gear fixing portion 12 extending along one end of the main body portion 11 in the axial direction.

[0023] Furthermore, the output shaft 1 further includes a cylindrical first assembly positioning post 13 extending from one end of the gear fixing portion 12 away from the main body portion 11 and a cylindrical second assembly positioning post 14 extending from one end of the first assembly positioning post 13 away from the gear fixing portion 12, and the diameter of the second assembly positioning post 14 is smaller than that of the first assembly positioning post 13. In this way, the alignment difficulty during the assembly of the gear 2 and the output shaft 1 is effectively reduced.

[0024] The main body portion 11, the gear fixing portion 12, the first assembly positioning post 13, and the second assembly positioning post 14 are coaxially arranged.

[0025] The gear 2 is provided with a keyway hole 21, the cross-section of the gear fixing portion 12 is the same as the shape of the keyway hole 21, and the gear 2 is riveted and fixed on the gear fixing portion 12 by fitting the keyway hole 21 with the gear fixing portion 12. Specifically, the gear fixing portion 12 and the keyway hole 21 are in interference fit.

[0026] In a specific embodiment, the keyway hole 21 is a runway-shaped hole.

[0027] The other end of the main body portion 11 in its axial direction is connected to a motor (not shown), and the motor is a 24BYJ stepping motor.

[0028] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0029] In addition, it should be noted that the scope of the methods and systems in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0030] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A motor output shaft riveting structure, characterized in that: It includes an output shaft and a gear fixed on the output shaft by riveting. The output shaft includes a main body and a gear fixing part extending at one end along the axial direction of the main body. The gear is provided with a keyway hole. The cross-section of the gear fixing part is consistent with the shape of the keyway hole. The gear cooperates with the gear fixing part through the keyway hole to be fixed on the gear fixing part by riveting.

2. The motor output shaft riveting structure according to claim 1, characterized in that: The keyway hole is a racetrack-shaped hole.

3. The motor output shaft riveting structure according to claim 1 or 2, characterized in that: The gear fixing portion is interference fit with the key slot hole.

4. The motor output shaft riveting structure according to claim 1, characterized in that: The gear is an E gear.

5. The motor output shaft riveting structure according to claim 1, characterized in that: The other end of the main body along the axial direction is connected to the motor.

6. The motor output shaft riveting structure according to claim 1, characterized in that: The output shaft further includes a cylindrical first assembly positioning column extending from an end of the gear fixing portion away from the main body portion.

7. The motor output shaft riveting structure according to claim 6, characterized in that: The output shaft further includes a cylindrical second assembly positioning column extending from one end of the first assembly positioning column away from the gear fixing portion, and the diameter of the second assembly positioning column is smaller than that of the first assembly positioning column.

8. The motor output shaft riveting structure according to claim 7, characterized in that: The main body, the gear fixing portion, the first assembly positioning column and the second assembly positioning column are coaxially arranged.

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