A new motor housing

Abstract

The utility model discloses a novel motor casing relates to motor technical field, including the mounting hole on the base of casing body and its bottom, and the mounting hole wall is circumferentially provided with one or more outward extending heat conduction groove, and this heat conduction groove penetrates casing body outer surface and is communicated with the inside of mounting hole. The structure constructs the heat dissipation channel that reaches the outside of casing through the mounting hole area, and the heat blocking problem that the small bolt head contact area, air insulation of traditional motor casing causes is solved. When the bolt and the inner wall of mounting hole contact, heat can diffuse to the external environment along the heat conduction groove, and the local temperature rise of base mounting hole area is reduced, and then material thermal aging and bolt pre -tightening force attenuation are avoided.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically a novel motor housing. Background Technology

[0002] In traditional motor housings, the area around the mounting holes on the base is one of the parts with the lowest heat dissipation efficiency.

[0003] The inner wall of the mounting hole is in close contact with the fixing bolt, forming a heat conduction path between metals. However, after the heat is transferred to the bolt head, the heat dissipation stops due to the small contact area and air isolation. The base of the motor housing is usually designed as a flat surface, and the area around the mounting hole lacks an effective heat dissipation structure, resulting in heat accumulation and local temperature rise. Existing heat dissipation solutions cannot specifically solve the problem of thermal blockage of the mounting hole. Therefore, we propose a new type of motor housing. Utility Model Content

[0004] The purpose of this invention is to provide a novel motor housing to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel motor housing, comprising a housing body, wherein at least one mounting hole is provided on the base of the housing body; one or more outwardly extending heat-conducting grooves are provided circumferentially on the wall of the mounting hole, the heat-conducting grooves penetrating the outer surface of the housing body and communicating with the interior of the mounting hole.

[0006] Preferably, the solid portion between two adjacent heat conduction grooves protrudes to form an elastic locking protrusion, and the top of the locking protrusion is higher than the original hole wall surface of the mounting hole.

[0007] Preferably, the heat conduction groove is arranged axially along the mounting hole to form an open channel that penetrates the thickness of the base body of the housing.

[0008] Preferably, the cross-section of the heat-conducting groove is rectangular.

[0009] Preferably, the material of the locking protrusion has a lower hardness than the material of the mounting hole base.

[0010] Preferably, the bottom of the heat-conducting groove is covered with a thermally conductive silicone layer, which extends to the locking protrusion surface.

[0011] Preferably, the thermally conductive silicone layer contains embedded metal powder.

[0012] Preferably, the cross-section of the locking protrusion is arc-shaped.

[0013] Compared with traditional technologies, the beneficial effects of this utility model are:

[0014] This device constructs a direct heat dissipation channel from the inside of the mounting hole to the outer surface of the housing by creating heat-conducting grooves that extend through the circumference of the mounting hole wall to the outer surface of the housing. When the bolts are tightened, the heat generated by the contact between the inner wall of the mounting hole and the bolts can be rapidly diffused outward along the heat-conducting grooves, effectively breaking the thermal blockage caused by the small contact area of ​​the bolt head and air isolation in traditional structures, and improving the heat dissipation efficiency of the mounting hole area of ​​the base.

[0015] The elastic locking protrusion formed by the solid portion between adjacent heat-conducting grooves, with its top height exceeding the original hole wall, generates elastic clamping force during bolt installation. This enhances the stability of bolt fixing and ensures a tight fit between the bolt's outer wall and the locking protrusion. This structure, while increasing mechanical locking force, further expands the heat-conducting contact area, forming an additional radial heat-conducting path, and synergistically enhances the overall heat dissipation effect in conjunction with the heat-conducting grooves.

[0016] The thermally conductive silicone layer covering the heat-conducting groove and its embedded metal powder design can fill the microscopic gaps between the groove and the bolts, improving the efficiency of heat transfer from the groove to the outside of the shell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the heat conduction groove structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the silicone layer structure of this utility model;

[0020] Figure 4 This is a schematic diagram showing the relative positions of the locking protrusion and the original hole wall of the mounting hole in this utility model.

[0021] In the diagram: 1-Housing body; 2-Base; 3-Mounting hole; 4-Heat conduction groove; 5-Locking protrusion; 6-Silicone layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figures 1-4The illustration shows a novel motor housing, comprising a housing body 1, with at least one mounting hole 3 on a base 2 of the housing body 1. One or more outwardly extending heat-conducting grooves 4 are circumferentially formed on the wall of the mounting hole 3, penetrating the outer surface of the housing body 1 and communicating with the interior of the mounting hole 3. When a bolt contacts the inner wall of the mounting hole 3, heat can diffuse along the heat-conducting grooves 4 to the outer surface of the base 2 of the housing body 1, overcoming the thermal blockage caused by the small contact area and air isolation of the bolt head in traditional structures, and improving the heat dissipation efficiency of the mounting hole 3 area.

[0025] The following describes some embodiments of this application in detail with reference to the accompanying drawings:

[0026] Please see Figures 1-4 By creating a heat-conducting groove 4 extending through the circumference of the mounting hole 3 to the outer shell, a direct heat dissipation channel is constructed from the inside of the mounting hole 3 to the outer surface of the shell body 1. When the bolt is tightened, the heat generated by the contact between the inner wall of the mounting hole 3 and the bolt can be rapidly diffused outward along the heat-conducting groove 4, effectively breaking the thermal blockage caused by the small contact area of ​​the bolt head and air isolation in the traditional structure, and improving the heat dissipation efficiency of the mounting hole 3 area of ​​the base 2.

[0027] Among them, the solid part between two adjacent heat conduction grooves 4 protrudes to form an elastic locking protrusion 5, and the top of the locking protrusion 5 is higher than the original hole wall surface of the mounting hole 3; the locking protrusion 5 is deformed by compression to provide a continuous elastic clamping force, which can enhance the bolt's resistance to vibration and loosening; at the same time, the top of the locking protrusion 5 is closely attached to the outer wall of the bolt, expanding the heat conduction contact area, and together with the heat conduction groove 4, it forms a composite heat dissipation method of radial heat conduction of the locking protrusion 5 and longitudinal heat dissipation of the heat conduction groove 4;

[0028] Meanwhile, the heat conduction groove 4 is axially connected along the mounting hole 3, forming an open channel that penetrates the thickness of the base 2 of the housing body 1, allowing heat in the mounting hole 3 to be directly transferred to the bottom outer surface of the housing body 1 along the heat conduction groove 4. Compared with blind hole or partial groove design, this fully continuous structure can eliminate heat dissipation dead angles and improve the longitudinal heat conduction efficiency;

[0029] It is worth noting that the heat conduction groove 4 has a rectangular cross-section, which is convenient for processing and shaping. At the same time, the regular rectangular space can provide a larger groove volume, increase the capacity of heat dissipation medium, and thus enhance the heat exchange capacity.

[0030] In this technical solution, the material hardness of the locking protrusion 5 is lower than that of the mounting hole 3 substrate, thereby compensating for manufacturing tolerances through its own plastic deformation and reducing the risk of bolt scratches; at the same time, the soft material can increase the contact deformation with the bolt, improve the sealing performance, and reduce the air gap at the heat conduction interface.

[0031] It is worth noting that the bottom of the heat conduction groove 4 is covered with a thermally conductive silicone layer 6, which extends to the surface of the locking protrusion 5. The silicone can flexibly fill the tiny gaps between the heat conduction groove 4, the locking protrusion 5, and the bolt, eliminating the air insulation layer. At the same time, the silicone layer 6 can absorb the local stress when the bolt is tightened, protecting the locking protrusion 5. By connecting the heat dissipation paths of the heat conduction groove 4 and the locking protrusion 5 into a whole, a continuous thermal interface can be formed.

[0032] In addition, the cross-section of the locking protrusion 5 is arc-shaped, which can avoid stress concentration and delay the generation of fatigue cracks; furthermore, the arc-shaped structure can guide plastic deformation to extend in the direction of the groove, maintaining the continuous clamping force of the locking protrusion 5 on the bolt.

[0033] The working principle of this device is as follows:

[0034] When the bolt is screwed into the mounting hole 3, frictional heat is generated by the contact between its outer wall and the hole wall, as well as heat conducted by the motor operation. At this time, the circumferentially opened heat conduction groove 4 forms a radial heat dissipation channel from the inner wall of the mounting hole 3 to the outer surface of the housing body 1. The heat is directly diffused outward through the air in the heat conduction groove 4, breaking through the thermal blockage caused by the small contact area and air isolation of the bolt head in the traditional structure. Since the heat conduction groove 4 is axially through, the heat can be further transferred longitudinally along the open channel to the outer surface of the base 2 of the housing body 1, and quickly conducted away through the mounting surface.

[0035] During the bolt tightening process, since the top of the elastic locking protrusion 5 is higher than the original hole wall, it will undergo elastic deformation after being squeezed by the bolt, forming a continuous clamping force, thereby suppressing the bolt loosening caused by device vibration; after the locking protrusion 5 is deformed, it fits tightly with the outer wall of the bolt, increasing the heat conduction contact area, and continuously dissipating heat in conjunction with the adjacent heat conduction groove 4.

[0036] By filling the micro-gap between the heat conduction groove 4 and the bolt with silicone, the air insulation layer can be eliminated, and the heat in the heat conduction groove 4 can be quickly discharged through the silicone layer 6.

[0037] When the motor is running, heat is transferred from the inside to the mounting hole 3 area. The bolt absorbs the heat from the hole wall, while the locking protrusion 5 maintains thermal contact due to continuous compression; most of the heat is dissipated through the heat conduction groove 4, and a small part is conducted to the adjacent heat conduction groove 4 through the locking protrusion 5; finally, the heat is dissipated through heat exchange between the outer surface of the housing body 1 and the air and the mounting surface, thereby maintaining the low temperature state of the mounting hole 3 area.

[0038] Example 2:

[0039] This embodiment is an optimization of the structure in Embodiment 1. Specifically, the thermally conductive silicone layer 6 is embedded with metal powder (not shown in the attached figure). The metal particles can form a highly thermally conductive network in the silicone matrix, thereby improving the thermal conductivity of the composite silicone layer 6. At the same time, the metal powder can increase the structural strength of the silicone layer 6 and suppress the degradation of thermal conductivity caused by long-term compression deformation.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel motor housing, comprising a housing body (1), wherein at least one mounting hole (3) is provided on the base (2) of the housing body (1). Its features are: The mounting hole (3) has one or more outwardly extending heat conduction grooves (4) circumferentially formed on the hole wall. The heat conduction grooves (4) penetrate the outer surface of the housing body (1) and communicate with the interior of the mounting hole (3). The solid portion between two adjacent heat-conducting grooves (4) protrudes to form an elastic locking protrusion (5), the top of which is higher than the original hole wall surface of the mounting hole (3).

2. The novel motor housing according to claim 1, characterized in that: The heat-conducting groove (4) is axially connected along the mounting hole (3) to form an open channel that penetrates the thickness of the base (2) of the housing body (1).

3. The novel motor housing according to claim 1, characterized in that: The heat-conducting groove (4) has a rectangular cross-section.

4. The novel motor housing according to claim 1, characterized in that: The material hardness of the locking protrusion (5) is lower than that of the substrate of the mounting hole (3).

5. A novel motor housing according to claim 1, characterized in that: The bottom of the heat-conducting groove (4) is covered with a heat-conducting silicone layer (6), which extends to the surface of the locking protrusion (5).

6. A novel motor housing according to claim 5, characterized in that: The thermally conductive silicone layer (6) contains embedded metal powder.

7. A novel motor housing according to claim 1, characterized in that: The cross-section of the locking protrusion (5) is arc-shaped.

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