Brushless direct current motor with good heat dissipation effect

Abstract

The utility model discloses a brushless direct current motor with a good heat dissipation effect, and belongs to the technical field of brushless direct current motors. A brushless direct current motor with a good heat dissipation effect comprises a motor body, a shell and a heat dissipation assembly. The shell is fixedly connected with the motor body; the limiting sleeve is fixedly connected with the shell; the guide sleeve is fixedly connected with the motor body; the guide column is vertically and slidably connected with the guide sleeve; the first rotating shaft is rotationally connected with the guide column in the circumferential direction; the driving block is fixedly connected with the guide column; the fastening block is in radial sliding connection with the guide sleeve; the two ends of the first spring are fixedly connected with the guide sleeve and the fastening block respectively; wherein the driving block comprises a driving inclined surface; the fastening block comprises a transmission inclined surface; the driving inclined surface is propped against the transmission inclined surface; the limiting sleeve comprises a first limiting groove; and the fastening block is inserted into the first limiting groove. The brushless direct current motor has the beneficial effects that the brushless direct current motor which is convenient to install and good in heat dissipation effect is provided.

Description

Technical Field

[0001] This application relates to the technical field of brushless DC motors. Specifically, it relates to a brushless DC motor with good heat dissipation effect. Background Technique

[0002] A brushless DC motor consists of a motor main body and a driver, and is a typical mechatronic product. A brushless motor refers to a motor without a carbon brush and a commutator (or slip ring), also known as a non-commutator motor. As early as when the motor was born in the 19th century, the practical motor produced was in the brushless form, that is, an AC squirrel-cage asynchronous motor, and this kind of motor has been widely used.

[0003] The structure of the product can refer to the heat dissipation device and the housing fixed by fixing screws in a new structure industrial brushless DC motor for power tools (CN217335311U) disclosed in the Chinese patent literature. When maintenance and cleaning are required, the screws need to be tightened one by one for fixing, resulting in relatively troublesome installation of the heat dissipation device.

[0004] Therefore, a brushless DC motor with good heat dissipation effect and easy installation is provided. Utility Model Content

[0005] The content part of this application is used to briefly introduce the concepts, which will be described in detail in the following specific implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] To solve the technical problems mentioned in the above background art part, some embodiments of this application provide a brushless DC motor with good heat dissipation effect, including: a motor body, a housing, and a heat dissipation component; the housing is fixedly connected to the motor body; a limit sleeve, fixedly connected to the housing; a guide sleeve, fixedly connected to the motor body; a guide post, vertically slidably connected to the guide sleeve; a first rotating shaft, circumferentially rotatably connected to the guide post; a driving block, fixedly connected to the guide post; a fastening block, radially slidably connected to the guide sleeve; a first spring, with both ends fixedly connected to the guide sleeve and the fastening block respectively; wherein, the driving block includes a driving inclined surface; the fastening block includes a transmission inclined surface; the driving inclined surface abuts against the transmission inclined surface; the limit sleeve includes a first limit groove; the first limit groove is for the fastening block to be inserted into.

[0007] Push the first rotating shaft, the movement of the first rotating shaft drives the movement of the guide post, the movement of the guide post drives the movement of the driving block, and the movement of the driving block drives the movement of the fastening block, so that the fastening block is inserted into the first limit groove, thereby fixing the housing and the motor body, and it is easy to install.

[0008] Further, the guide sleeve is provided with a first sliding groove extending along the axis of the guide sleeve; the guide post moves along the first sliding groove.

[0009] Further, the guide sleeve is provided with a second sliding groove extending radially of the guide sleeve; the fastening block moves along the second sliding groove.

[0010] Further, the brushless DC motor with good heat dissipation effect further includes: a limit block fixedly connected to the first rotating shaft.

[0011] Further, the guide sleeve is provided with an insertion groove extending along the axial direction of the guide sleeve; the insertion groove is for the limit block to be inserted.

[0012] Further, the guide sleeve is provided with a second limit groove extending along the circumference of the guide sleeve; the second limit groove is used for limiting the limit block.

[0013] Further, the insertion groove and the second limit groove are communicated.

[0014] Further, the limit sleeve includes a guide hole; the guide hole is for the guide sleeve to be inserted.

[0015] Further, the heat dissipation component includes: a fixing frame fixedly connected to the housing; a fan rotatably connected to the fixing frame.

[0016] Further, the housing is provided with heat dissipation holes.

[0017] The beneficial effect of the present application is: to provide a brushless DC motor with good heat dissipation effect and convenient installation. Description of the Drawings

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application, making other features, objects, and advantages of the present application more obvious. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application.

[0019] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the elements and components are not necessarily drawn to scale.

[0020] In the drawings:

[0021] Figure 1 is the overall schematic diagram according to the embodiment of the present application;

[0022] Figure 2 is the structural schematic diagram of a part of the embodiment, mainly showing the structures of the fixing frame and the fan;

[0023] Figure 3It is a schematic structural diagram of a part of an embodiment, mainly showing the structure of the housing;

[0024] Figure 4 is Figure 3 an enlarged view of part A, mainly showing the structures of the guide sleeve and the limit sleeve;

[0025] Figure 5 is Figure 4 an enlarged view of part B, mainly showing the structures of the fastening block and the first limit groove;

[0026] Figure 6 It is a schematic structural diagram of a part of an embodiment, mainly showing the structures of the first rotating shaft and the limit block;

[0027] Figure 7 is Figure 6 an enlarged view of part C, mainly showing the structures of the insertion groove and the second limit groove;

[0028] Figure 8 It is a schematic structural diagram of a part of an embodiment, mainly showing the structures of the driving block and the driving inclined surface;

[0029] Figure 9 It is a schematic structural diagram of a part of an embodiment, mainly showing the structure of the first sliding groove.

[0030] Reference numerals:

[0031] 100, brushless DC motor with good heat dissipation effect; 101, motor body; 102, housing; 102a, heat dissipation hole; 103, limit sleeve; 103a, guide hole; 103b, first limit groove; 104, guide sleeve; 104a, first sliding groove; 104b, second sliding groove; 104c, insertion groove; 104d, second limit groove; 105, guide post; 106, first rotating shaft; 107, driving block; 107a, driving inclined surface; 108, fastening block; 108a, transmission inclined surface; 109, first spring; 110, limit block; 112, fixed bracket; 113, fan. Detailed implementation manners

[0032] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0033] In addition, it should be noted that for the convenience of description, only the parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0034] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence relationship of the functions performed by these devices, modules or units.

[0035] It should be noted that the modifications of "one" and "plural" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless clearly specified otherwise in the context, it should be understood as "one or more".

[0036] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0037] Referring to Figures 1-9 , a brushless DC motor 100 with good heat dissipation effect includes: a motor body 101, a housing 102, a heat dissipation component for dissipating heat inside the motor body 101, a limit sleeve 103, a guide sleeve 104, and a fixing component for fixing the housing 102 and the motor body 101. The housing 102 is fixedly connected to the motor body 101. The limit sleeve 103 is fixedly connected to the housing 102. The guide sleeve 104 is fixedly connected to the motor body 101. The limit sleeve 103 includes a guide hole 103a, and the guide sleeve 104 is inserted into the guide hole 103a.

[0038] The fixing component is used to fix the housing 102 and the motor body 101, and includes: a guide post 105, a first rotating shaft 106, a driving block 107, a fastening block 108, a first spring 109, and a limit block 110. The guide post 105 is vertically slidably connected to the guide sleeve 104. Specifically, the guide sleeve 104 is provided with a first sliding groove 104a extending along the axis of the guide sleeve 104, and the guide post 105 moves along the first sliding groove 104a. The first rotating shaft 106 is circumferentially rotatably connected to the guide post 105. The driving block 107 is fixedly connected to the guide post 105. The fastening block 108 is radially slidably connected to the guide sleeve 104. Specifically, the guide sleeve 104 is provided with a second sliding groove 104b extending radially of the guide sleeve 104, and the fastening block 108 moves along the second sliding groove 104b.

[0039] Both ends of the first spring 109 are fixedly connected to the guide sleeve 104 and the fastening block 108 respectively. The limiting block 110 is fixedly connected to the first rotating shaft 106. The limiting sleeve 103 is provided with an insertion groove 103c extending along the axial direction of the limiting sleeve 103, and the insertion groove 103c is for the limiting block 110 to insert. The guide sleeve 104 is provided with a second limiting groove 104d extending along the circumference of the guide sleeve 104, and the second limiting groove 104d is used for limiting the limiting block 110. The insertion groove 104c and the second limiting groove 104d communicate with each other.

[0040] Wherein, the driving block 107 includes a driving inclined surface 107a, the fastening block 108 includes a transmission inclined surface 108a, the driving inclined surface 107a abuts against the transmission inclined surface 108a, the limiting sleeve 103 includes a first limiting groove 103b, and the first limiting groove 103b is for the fastening block 108 to insert. Push the first rotating shaft 106, the movement of the first rotating shaft 106 drives the guide post 105 to move, the movement of the guide post 105 drives the driving block 107 to move, and the driving block 107 drives the fastening block 108 to move along the second sliding groove 104b through the driving inclined surface 107a and the transmission inclined surface 108a, so that the fastening block 108 is inserted into the first limiting groove 103b. At the same time, the limiting block 110 will be inserted into the insertion groove 104c, so that the guide sleeve 104 is fixed to the limiting sleeve 103, that is, the housing 102 and the motor body 101 are fixed. Then rotate the first rotating shaft 106, the first rotation drives the limiting block 110 to rotate to the second limiting groove 103d, so that the guide post 105 is fixed to the guide sleeve 104, and the installation is more convenient. When the heat dissipation component needs to be repaired and disassembled, rotate the first rotating shaft 106 to make the limiting block 110 rotate from the second limiting groove 104d to the insertion groove 104c, and under the action of the first spring 109, it will drive the fastening block 108 to move. The movement of the fastening block 108 drives the driving block 107 to move, thereby driving the guide post 105 to move. The movement of the guide post 105 drives the first rotating shaft 106 to move, and the fastening block 108 can be disengaged from the restriction of the first limiting groove 103b, so that the housing 102 is separated from the motor body 101.

[0041] The heat dissipation of the motor body 101 of the heat dissipation component includes: a fixing frame 112 and a fan 113. The fixing frame 112 is fixedly connected to the housing 102. The fan 113 is rotatably connected to the fixing frame 112. The housing 102 is provided with heat dissipation holes 102a. The fan 113 is externally connected to a power supply, and the rotation and stop of the fan 113 are controlled by the power on and off of the power supply, so as to dissipate heat from the motor body 101, and dissipate heat through the heat dissipation holes 102a.

[0042] Workflow: Push the first rotating shaft 106. The movement of the first rotating shaft 106 drives the movement of the guide post 105. The movement of the guide post 105 drives the movement of the driving block 107. The driving block 107 drives the fastening block 108 to move along the second chute 104b through the driving inclined surface 107a and the transmission inclined surface 108a, so that the fastening block 108 is inserted into the first limiting groove 103b. At the same time, the limiting block 110 will be inserted into the insertion groove 104c, so that the guide sleeve 104 and the limiting sleeve 103 are fixed, that is, the housing 102 and the motor body 101 are fixed. Then rotate the first rotating shaft 106. The first rotation drives the limiting block 110 to rotate to the second limiting groove 103d, so that the guide post 105 and the guide sleeve 104 are fixed, making the installation more convenient.

[0043] The fan 113 is externally powered. The rotation and stop of the fan 113 are controlled by the power on and off of the power supply, so as to dissipate heat from the motor body 101, and heat dissipation is also carried out through the heat dissipation holes 102a. When too much dust accumulates on the housing 102 and needs to be cleaned, rotate the first rotating shaft 106 to make the limiting block 110 rotate from the second limiting groove 104d to the insertion groove 104c. And under the action of the first spring 109, it will drive the fastening block 108 to move. The movement of the fastening block 108 drives the movement of the driving block 107, thereby driving the movement of the guide post 105. The movement of the guide post 105 drives the movement of the first rotating shaft 106, so that the fastening block 108 can be disengaged from the restriction of the first limiting groove 103b, and thus the housing 102 and the motor body 101 are separated. Thus, it can be cleaned to prevent the reduction of the heat dissipation effect caused by dust accumulation and increase the heat dissipation effect of the motor body 101.

[0044] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A brushless DC motor with good heat dissipation effect, comprising: a motor body, a housing, and a heat dissipation component; the housing is fixedly connected to the motor body; Characterized in that: The brushless DC motor with good heat dissipation effect further comprises: a limit sleeve, fixedly connected to the housing; a guide sleeve, fixedly connected to the motor body; a guide post, vertically slidably connected to the guide sleeve; a first rotating shaft, circumferentially rotatably connected to the guide post; a driving block, fixedly connected to the guide post; a fastening block, radially slidably connected to the guide sleeve; a first spring, with both ends fixedly connected to the guide sleeve and the fastening block respectively; Wherein, the driving block includes a driving inclined surface; the fastening block includes a transmission inclined surface; the driving inclined surface abuts against the transmission inclined surface; the limit sleeve includes a first limit groove; the first limit groove is for the fastening block to insert.

2. The brushless DC motor with good heat dissipation effect according to claim 1, characterized in that: The guide sleeve is provided with a first sliding groove extending along the axis of the guide sleeve; The guide post moves along the first sliding groove.

3. The brushless DC motor with good heat dissipation effect according to claim 2, characterized in that: The guide sleeve is provided with a second sliding groove extending radially of the guide sleeve; The fastening block moves along the second sliding groove.

4. The brushless DC motor with good heat dissipation effect according to claim 3, characterized in that: The brushless DC motor with good heat dissipation effect further comprises: a limit block, fixedly connected to the first rotating shaft.

5. The brushless DC motor with good heat dissipation effect according to claim 4, characterized in that: The guide sleeve is provided with an insertion groove extending along the axial direction of the guide sleeve; The insertion groove is for the limit block to insert.

6. The brushless DC motor with good heat dissipation effect according to claim 5, characterized in that: The guide sleeve is provided with a second limit groove extending along the circumference of the guide sleeve; The second limit groove is used for limiting the limit block.

7. The brushless DC motor with good heat dissipation effect according to claim 6, characterized in that: The insertion groove and the second limit groove are communicated.

8. The brushless DC motor with good heat dissipation effect according to claim 7, characterized in that: The limit sleeve includes a guide hole; The guide hole is for the guide sleeve to insert.

9. The brushless DC motor with good heat dissipation effect according to claim 1, characterized in that: The heat dissipation component includes: a fixing frame, fixedly connected to the housing; a fan, rotatably connected to the fixing frame.

10. The brushless DC motor with good heat dissipation effect according to claim 9, wherein: The housing is provided with heat dissipation holes.

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