A stepping motor assembly structure

Abstract

The present invention discloses a stepping motor assembly structure, which includes a motor housing and a heat dissipation assembly disposed outside the motor housing. The top corners of the motor housing are chamfered, and a first component clamping position is provided at the chamfered position of the motor housing. A second component clamping position is provided on the surface of the motor housing, and the second component clamping position is located on both sides adjacent to the first component clamping position. The heat dissipation assembly is a heat dissipation fin group that fits the surface of the motor housing. The inner side of the heat dissipation fin group is provided with a first installation convex that forms a pin fit with the first component clamping position and a second installation convex that forms a clamping fit with the second component clamping position. The stepping motor assembly structure is convenient to install, has a better heat dissipation effect, a lower heat dissipation cost, and is convenient for replacement and maintenance.

Description

Technical Field

[0001] The present invention relates to a structure of a stepper motor assembly. Background Art

[0002] A stepper motor is a motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. For each input pulse signal, the rotor rotates an angle or moves forward one step. Its output angular displacement or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency. Therefore, a stepper motor is also called a pulse motor.

[0003] When the existing stepper motor is in use, a large amount of heat will be generated. Therefore, it needs to be cooled. However, the heat dissipation components of the existing stepper motor have problems such as inconvenient installation, poor heat dissipation effect, high heat dissipation cost, and it is not convenient to replace after damage, which affects the use effect of the stepper motor. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a stepper motor assembly structure that is convenient to install, has a better heat dissipation effect, a lower heat dissipation cost, and is convenient for replacement and maintenance.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A stepper motor assembly structure includes a motor housing and a heat dissipation component arranged outside the motor housing. The top corners of the motor housing are chamfered, and a first component clamping position is arranged at the chamfered position of the motor housing. A second component clamping position is arranged on the surface of the motor housing, and the second component clamping position is located on both sides adjacent to the first component clamping position. The heat dissipation component is a heat dissipation fin group that fits with the surface of the motor housing. The inner side of the heat dissipation fin group is provided with a first installation convex that forms a pin fit with the first component clamping position and a second installation convex that forms a clamping fit with the second component clamping position.

[0007] Preferably, the heat dissipation fin group is composed of more than one heat dissipation fin that surrounds the outer circumference of the motor housing to form a closed shape. The adjacent heat dissipation fins form a concave-convex fit at the chamfered position of the motor housing.

[0008] Preferably, one side of the heat dissipation fin is provided with a stepped recess, and the other side is provided with a stepped protrusion. The adjacent heat dissipation fins are movably connected through the stepped recess and the stepped protrusion.

[0009] Preferably, the first installation convex is arranged at the chamfered position of the heat dissipation fin on the motor housing and is formed by splicing the heat dissipation fins with concave-convex fit. Each heat dissipation fin forms half of the first installation convex at the first component clamping position.

[0010] Preferably, the first component clamping position is formed by a rod body arranged in a U shape, and the first component clamping position is located at the U-shaped concave circle in the center of the rod body arranged in a U shape.

[0011] Preferably, the second mounting convex is a strip-shaped convex column protruding from the heat dissipation fins, and the end of the second mounting convex is bent laterally, and the bending direction of the end of the second mounting convex is from the middle to the outside.

[0012] Preferably, the length of the second mounting convex is greater than the length of the first mounting convex, and the width of the second mounting convex is less than the width of the first mounting convex.

[0013] Preferably, the first mounting convex is snapped into the first component clamping position to form a filling, and the second mounting convex is snapped into the second component clamping position to form a movement.

[0014] Preferably, the outer surface of the motor housing is provided with heat dissipation patterns, the heat dissipation patterns are one or more concave and convex patterns densely distributed on the periphery of the motor housing, and the pattern direction of the heat dissipation patterns is perpendicular to the fin direction of the heat dissipation fins.

[0015] Preferably, a thermal grease layer is coated on the surface of the heat dissipation patterns of the motor housing, and the heat dissipation patterns of the motor housing and the heat dissipation fins are in contact through the thermal grease layer.

[0016] The beneficial effects of the present invention are:

[0017] The detachable assembly of the heat dissipation fin group is carried out by using the first component clamping position and the second component clamping position. Compared with the traditional heat transfer heat dissipation structure, the structure of the motor housing is improved in this solution, the clamping and matching structure of the first component clamping position and the second component clamping position is added, and the first mounting convex and the second mounting convex are formed on the heat dissipation fin group to cooperate with them. Through the abutting contact and clamping cooperation between the motor housing and the heat dissipation fin group, the overall heat dissipation component can be relatively firmly fixed on the stepping motor with a large vibration amplitude, and the purposes of convenient installation and efficient heat dissipation are achieved. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a stepping motor component structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the motor housing structure of a stepping motor component structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the heat dissipation fin group structure of a stepping motor component structure of the present invention. Detailed Embodiments

[0021] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. In the following paragraphs, the present invention will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present invention will be more clearly understood from the following description and the claims. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Embodiment

[0025] Refer to Figures 1-3 As shown, a stepping motor assembly structure includes a motor housing 1 and a heat dissipation assembly disposed outside the motor housing 1. The top corners of the motor housing 1 are chamfered, and a first component clamping position 11 is provided at the chamfered position of the motor housing 1. A second component clamping position 12 is provided on the surface of the motor housing 1, and the second component clamping position 12 is located on both sides adjacent to the first component clamping position 11. The heat dissipation assembly is a heat dissipation fin group 2 that fits the surface of the motor housing 1. The inner side of the heat dissipation fin group 2 is provided with a first installation convex 21 that forms a pin fit with the first component clamping position 11 and a second installation convex 22 that forms a clamping fit with the second component clamping position 12.

[0026] The heat dissipation fin group 2 is composed of more than one heat dissipation fin 23 that surrounds the outer periphery of the motor housing 1 to form a closed structure. The adjacent heat dissipation fins 23 form a concave-convex fit at the chamfer position of the motor housing 1.

[0027] In this embodiment, a heat dissipation fin group 2 composed of four heat dissipation fins 23 is combined and enclosed into a rectangular shape. The heat dissipation fin group 2 of this design just matches the rectangular shape of the existing conventional stepper motor, and the installation method using this heat dissipation fin group 2 can maximize the space occupied by the stepper motor, thus obtaining more practical prospects.

[0028] One side of the heat dissipation fin 23 is provided with a stepped recess, and the other side is provided with a stepped protrusion. The adjacent heat dissipation fins 23 are movably connected through the stepped recess and the stepped protrusion. The concave-convex fit between the adjacent heat dissipation fins 23 is realized by adopting the fit design of the recess and the protrusion. The advantage of adopting this stepped concave-convex position fit is that it is convenient to load the heat dissipation fins 23 one by one, and there will be no blocking during loading. Of course, an inclined fit method can also be adopted.

[0029] The first installation convex 21 is arranged at the chamfer position of the heat dissipation fin 23 on the motor housing 1 and is formed by the adjacent heat dissipation fins 23 with concave-convex fit. Each heat dissipation fin 23 forms half of the first installation convex 21 at the first component clamping position 11. The first component clamping position 11 is composed of a rod body arranged in a U shape, and the first component clamping position 11 is located at the U-shaped concave circle at the center of the rod body arranged in a U shape.

[0030] By adopting the matching clamping structure of the first installation convex 21 and the first component clamping position 11, the clamping of the heat dissipation fin 23 at the top corner of the motor housing 1 is realized, and the purpose of this clamping is to close the top corner position.

[0031] The second installation convex 22 is a strip-shaped convex column protruding from the heat dissipation fin 23. The end of the second installation convex 22 is bent laterally, and the bending direction of the end of the second installation convex 22 is from the middle to the outside. The length of the second installation convex 22 is greater than the length of the first installation convex 21, and the width of the second installation convex 22 is smaller than the width of the first installation convex 21.

[0032] By adopting the matching clamping structure of the second installation convex 22 and the second component clamping position 12, the clamping of the heat dissipation fin 23 at the side of the motor housing 1 is realized, and the purpose of this clamping is to fix the heat dissipation fin 23 at the side position of the motor housing 1 to avoid detachment caused by vibration and other situations.

[0033] The first installation convex 21 is snapped into the first component clamping position 11 to form a filling state, and the second installation convex 22 is snapped into the second component clamping position 12 to form a movable state. The main purpose of this design is to facilitate the installation and fixation of the heat dissipation fins 23, to avoid the situation where the heat dissipation fins 23 are difficult to be snapped into and installed on the motor housing 1 due to interference, and to avoid the situation where the heat dissipation fins 23 break away from the motor housing 1 during vibration due to gaps.

[0034] The outer surface of the motor housing 1 is provided with heat dissipation patterns 13. The heat dissipation patterns 13 are one or more concave-convex patterns densely distributed on the circumferential side of the motor housing 1. The pattern direction of the heat dissipation patterns 13 is perpendicular to the fin direction of the heat dissipation fins 23. A heat conductive silicone grease layer is coated on the surface of the heat dissipation patterns 13 of the motor housing 1. Contact is formed between the heat dissipation patterns 13 of the motor housing 1 and the heat dissipation fins 23 through the heat conductive silicone grease layer.

[0035] Considering the heat transfer and heat dissipation of the motor housing 1, in this embodiment, a method of increasing the heat dissipation patterns 13 is also proposed to further increase the heat dissipation contact surface of the motor housing 1. At the same time, a method of coating a heat conductive silicone grease layer is also adopted to improve the heat transfer effect between the motor housing 1 and the heat dissipation fins 23.

[0036] During use, first, the surface heat dissipation patterns 13 of the motor housing 1 are coated with heat conductive silicone grease to form a heat conductive silicone grease layer. Then, the first installation convex 21 on one side of one of the heat dissipation fins 23 is inserted into the first component clamping position 11. Then, the second installation convex 22 on this side is inserted into the second component clamping position 12. Then, the second installation convex 22 on the other side is inserted into another second component clamping position 12. Then, the first installation convex 21 on this side is inserted into the second component clamping position 12, and the installation of one side of the heat dissipation fins 23 can be completed. Similarly, after the installation of the heat dissipation fins 23 on the other three sides is completed, they can be assembled into a complete heat dissipation fin group 2.

[0037] The beneficial effects of the present invention are:

[0038] The detachable assembly of the heat dissipation fin group is carried out by using the first component clamping position and the second component clamping position. Compared with the traditional heat transfer and heat dissipation structure, the structure of the motor housing in this solution is improved. The clamping and matching structure of the first component clamping position and the second component clamping position is added, and the first installation convex and the second installation convex are formed on the heat dissipation fin group to cooperate with them. Through the abutting contact and clamping cooperation between the motor housing and the heat dissipation fin group, the overall heat dissipation component can be relatively firmly fixed on the stepping motor with a large vibration amplitude, and the purposes of convenient installation and efficient heat dissipation are achieved.

[0039] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All such modifications, substitutions or alterations in various other forms made to the above structure of the present invention according to the above content of the present invention, in accordance with the common general technical knowledge and customary means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A stepping motor assembly structure, comprising a motor housing and a heat dissipation assembly disposed outside the motor housing, characterized in that: The top corners of the motor housing are chamfered, and a first component clamping position is provided at the chamfer position of the motor housing. A second component clamping position is provided on the surface of the motor housing, and the second component clamping position is located on both sides adjacent to the first component clamping position. The heat dissipation component is a heat dissipation fin group that fits against the surface of the motor housing. The inner side of the heat dissipation fin group is provided with a first installation convex that forms a plug-in fit with the first component clamping position and a second installation convex that forms a clamping fit with the second component clamping position; The length of the second installation convex is greater than that of the first installation convex, and the width of the second installation convex is less than that of the first installation convex; the first installation convex is inserted into the first component clamping position to form a filling, and the second installation convex is inserted into the second component clamping position to form a movement; The outer surface of the motor housing is provided with heat dissipation patterns; a heat conduction silicone grease layer is coated on the surface of the heat dissipation patterns of the motor housing, and the heat dissipation patterns of the motor housing and the heat dissipation fins are in contact through the heat conduction silicone grease layer.

2. The stepping motor assembly structure according to claim 1, wherein: The heat dissipation fin group is composed of more than one heat dissipation fin that surrounds the outer periphery of the motor housing to form a closed shape, and the adjacent heat dissipation fins form a concave-convex fit at the chamfer position of the motor housing.

3. The structure of the stepper motor assembly according to claim 2, characterized in that: One side of the heat dissipation fin is provided with a stepped recess, and the other side is provided with a stepped protrusion. The adjacent heat dissipation fins are movably connected through the stepped recess and the stepped protrusion.

4. The structure of the stepper motor assembly according to claim 1, wherein: The first installation convex is arranged at the chamfer position of the heat dissipation fin on the motor housing and is formed by splicing the adjacent concave-convex heat dissipation fins. Each heat dissipation fin forms half of the first installation convex at the first component clamping position.

5. The stepping motor assembly structure according to claim 4, characterized in that: The first component clamping position is composed of a rod body arranged in a U shape, and the first component clamping position is located at the U-shaped concave circle in the center of the rod body arranged in a U shape.

6. The structure of the stepper motor assembly according to claim 1, wherein: The second installation convex is a strip-shaped convex column protruding from the heat dissipation fin, and the end of the second installation convex is bent laterally, and the bending direction of the end of the second installation convex is from the middle to the outside.

7. The structure of the stepper motor assembly according to any one of claims 1-6, characterized in that: The heat dissipation patterns are one or more concave-convex patterns densely distributed on the circumference of the motor housing, and the pattern direction of the heat dissipation patterns is perpendicular to the fin direction of the heat dissipation fins.

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