Positioning type motor with positioning columns

Abstract

The utility model belongs to the technical field of stepping motors, and particularly relates to a positioning type motor with a positioning column, which comprises a shell, a stator assembly and an output shaft assembly which are positioned in an inner cavity of the shell, and a support frame type top cover and a bottom cover which are respectively positioned at the top end and the bottom end of the shell, and an output shaft of the output shaft assembly extends out of the support frame type top cover. Wherein a framework is arranged between the stator assembly and the shell, and a claw pole of the output shaft assembly is located on the framework; wherein the top plate surface of the shell and the connecting plate are welded into a whole, three positioning columns are arranged on the bottom plate surface of the supporting frame type top cover, and the positioning columns and the bottom plate surface of the supporting frame type top cover are welded into a whole; the positioning columns are located in the positioning holes matched with the positioning columns, and the positioning holes are located in the top plate surface of the stator assembly. Due to the structure, the injection molding process difficulty is reduced, the assembling and positioning precision is improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of stepper motors and provides a positioning motor with a positioning column, which reduces the difficulty of injection molding process, improves assembly positioning accuracy and reduces manufacturing cost. Background Art

[0002] See attached Figure 1 and 2 The existing angle adjustment motor for automobile headlights generally comprises a housing (1), a stator assembly (2) and an output shaft assembly (3) located in the inner cavity of the housing (1), a support frame type top cover (4) and a bottom cover (5) respectively located at the top and bottom ends of the housing (1), an output shaft (6) of the output shaft assembly (3) extending out of the support frame type top cover (4), a frame (7) being arranged between the stator assembly (2) and the housing (1), a claw pole of the output shaft assembly (3) being located on the frame (7), six glue flow positions (8) being arranged on the frame (7), positioning protrusions (9) being arranged on the top plate surface and the bottom plate surface of the stator assembly (2), and a connecting plate (10) for assembly and connection with the support frame type top cover (4) being inserted into the positioning protrusions (9) on the top plate surface of the stator assembly (2). The positioning protrusions (9) on the top plate surface of the stator assembly (2) of the motor of this structure are used to provide positioning when the stator assembly (2) and the connecting plate (10) are assembled. When the stator assembly (2) is injection molded, the positioning protrusions (9) on the top plate surface of the stator assembly (2) are far away from the glue inlet, and the injection molding pressure required for the protrusions to be fully molded is relatively large, which is prone to undesirable phenomena such as glue leakage. This phenomenon makes the injection molding process more difficult and the manufacturing cost high. In the subsequent assembly, there is no positioning structure between the support frame type top cover (4) and the stator assembly (2). In the subsequent assembly process, the positioning accuracy depends entirely on the accuracy of the tooling fixture, and the assembly positioning accuracy is low. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a positioning motor with a positioning column, which reduces the difficulty of the injection molding process, improves the assembly positioning accuracy and reduces the manufacturing cost.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] The utility model provides a positioning motor with a positioning column, comprising a shell, a stator assembly and an output shaft assembly located in the inner cavity of the shell, a support frame type top cover and a bottom cover respectively located at the top end and the bottom end of the shell, the output shaft of the output shaft assembly extends out of the support frame type top cover, wherein a skeleton is arranged between the stator assembly and the shell, and the claw pole of the output shaft assembly is located on the skeleton; wherein: the top plate surface of the shell is welded to a connecting plate as a whole, three positioning columns are arranged on the bottom plate surface of the support frame type top cover, and the positioning columns are welded to the bottom plate surface of the support frame type top cover as a whole; the positioning columns are located in positioning holes matched therewith, and the positioning holes are located on the top plate surface of the stator assembly.

[0006] In order to improve the positioning during assembly and reduce the difficulty of the injection molding process, and improve the assembly efficiency, in the above scheme, further, a positioning protrusion is provided on the bottom plate surface of the stator assembly, and the positioning protrusion is located at the positioning through hole on the bottom plate surface of the shell.

[0007] In order to further reduce the difficulty of the injection molding process, in the above solution, further, three glue flow positions are arranged on the frame.

[0008] In order to improve the overall assembly efficiency, in the above scheme, further, the support frame type top cover is provided with a load mounting ear, and the load mounting ear is provided with a mounting hole.

[0009] To facilitate external power supply, in the above scheme, further, the winding assembly is electrically connected to a connector fixed to the outer wall of the shell through a wire.

[0010] The beneficial effects of the utility model are as follows: in terms of technology, the top plate surface of the shell is welded to the connecting plate as a whole, replacing the role of the positioning protrusions on the top surface of the stator assembly, and reducing the three glue flow positions on the frame, thereby reducing the pressure required for the stator assembly during injection molding, and effectively reducing the difficulty of the injection molding process. Three positioning columns are added to the contact surface between the support frame top cover and the stator assembly to increase the positioning accuracy when assembling the support frame top cover and the stator assembly, reducing the accuracy requirements of the subsequent process on the tooling fixture, and thus reducing the manufacturing cost.

[0011] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0013] Figure 1 It is a structural schematic diagram of a motor in the prior art;

[0014] Figure 2 It is a structural schematic diagram of the skeleton of the motor in the prior art;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the framework of the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the support frame type top cover of the utility model;

[0019] Figure numerals: 1, housing; 2, stator assembly; 3, output shaft assembly; 4, support frame top cover; 5, bottom plate; 6, output shaft; 7, frame; 8, glue flow position; 9, positioning protrusion; 10, connecting plate; 11, positioning column; 12, load mounting ear; 13, mounting hole; 14, connector. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0021] The accompanying drawings are only used for illustrative purposes and are only schematic diagrams, not physical drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted. In addition, the utility model may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0022] like Figure 3-6As shown, the utility model has a positioning column positioning motor, comprising a housing 1, a stator assembly 2 and an output shaft assembly 3 located in the inner cavity of the housing 1, a support frame top cover 4 and a bottom cover 5 located at the top and bottom ends of the housing 1 respectively, the output shaft 6 of the output shaft assembly 3 extends out of the support frame top cover 4, wherein a skeleton 7 is arranged between the stator assembly 2 and the housing 1, and the claw pole of the output shaft assembly 3 is located on the skeleton 7; wherein: the top plate surface of the housing 1 is welded to a connecting plate 10 as a whole, three positioning columns 11 are arranged on the bottom plate surface of the support frame top cover 4, and the positioning columns 11 are welded to a whole with the bottom plate surface of the support frame top cover 4; the positioning columns 11 are located in a matching positioning hole, and the positioning hole is located on the top plate surface of the stator assembly 2. In this embodiment, the top plate surface of the housing 1 is welded to the connecting plate 10 as a whole, replacing the role of the positioning convex point on the top surface of the stator assembly, and reducing the three flow positions on the skeleton, thereby reducing the pressure required for the stator assembly during injection molding, and effectively reducing the difficulty of the injection molding process. Three positioning columns are added on the contact surface between the support frame type top cover 4 and the stator assembly to increase the positioning accuracy when assembling the support frame type top cover 4 and the stator assembly.

[0023] In order to improve the positioning during assembly and reduce the difficulty of the injection molding process, and improve the assembly efficiency, in the above embodiment, preferably, a positioning protrusion 9 is provided on the bottom plate surface of the stator assembly 2, and the positioning protrusion 9 is located at the positioning through hole on the bottom plate surface of the shell 1.

[0024] In order to further reduce the difficulty of the injection molding process, in the above embodiment, preferably, three glue flow positions 8 are provided on the skeleton 7 .

[0025] In order to improve the overall assembly efficiency, in the above embodiment, preferably, the support frame type top cover 4 is provided with a load mounting ear 12 , and the load mounting ear 12 is provided with a mounting hole 13 .

[0026] To facilitate external power supply, in the above embodiment, preferably, the winding assembly 2 is electrically connected to a connector 14 fixed to the outer wall of the housing 1 through a wire.

[0027] All the components in the above embodiments are commercially available products, including the output shaft assembly 3 and the rotor assembly.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A motor with a positioning column, comprising a housing (1), a stator assembly (2) and an output shaft assembly (3) located in an inner cavity of the housing (1), a support frame type top cover (4) and a bottom cover (5) located at the top and bottom ends of the housing (1), respectively, an output shaft (6) of the output shaft assembly (3) extending out of the support frame type top cover (4), a frame (7) being provided between the stator assembly (2) and the housing (1), and a claw pole of the output shaft assembly (3) being located on the frame (7); characterized in that: The top plate surface of the shell (1) is welded to the connecting plate (10) as a whole, and three positioning columns (11) are arranged on the bottom plate surface of the support frame type top cover (4), and the positioning columns (11) are welded to the bottom plate surface of the support frame type top cover (4) as a whole; the positioning columns (11) are located in positioning holes matched therewith, and the positioning holes are located on the top plate surface of the stator assembly (2).

2. The positioning motor with a positioning column according to claim 1, characterized in that: A positioning protrusion (9) is provided on the bottom plate surface of the stator assembly (2), and the positioning protrusion (9) is located at a positioning through hole on the bottom plate surface of the housing (1).

3. The positioning motor with positioning column according to claim 1, characterized in that: Three glue flow positions (8) are arranged on the skeleton (7).

4. The positioning motor with positioning column according to claim 1, characterized in that: The support frame type top cover (4) is provided with a load mounting ear (12), and the load mounting ear (12) is provided with a mounting hole (13).

5. The positioning motor with positioning column according to claim 1, characterized in that: The stator assembly (2) is electrically connected to a connector (14) fixed to the outer wall of the housing (1) via a wire.

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