A multifunctional motor bracket

Abstract

The utility model discloses a multifunctional motor support, including carbon brush support, baffle and a pair of symmetry setting carbon brush installation subassembly in carbon brush support both sides, carbon brush installation subassembly include carbon brush containing hole, the outside of carbon brush containing hole is equipped with the heat dissipation window, one side of carbon brush containing hole is equipped with carbon brush braid export, the outside of baffle is equipped with carbon brush braid fixed groove, carbon brush support on be equipped with torsional spring, one end of torsional spring is pressed in carbon brush braid fixed groove's export, for carbon brush braid is pressed in carbon brush braid fixed groove, the other end is located heat dissipation window, for the carbon brush in carbon brush containing hole is pressed inwards, the torsional spring is installed and fixed through torsional spring positioning column on carbon brush support. The utility model breaks through the design from material selection, structure integration, component multifunction three dimensions, solved carbon brush overheat adhesion, carbon brush braid fixed unreliable etc.

Description

Technical Field

[0001] This utility model relates to a multifunctional motor bracket. Background Technology

[0002] The motor bracket is a core component of the motor, on which the carbon brush assembly is integrated and installed. For motors that use carbon brush commutation, the stability and reliability of the carbon brush operation directly determine the overall performance and service life of the motor.

[0003] Under the harsh operating conditions of equipment such as cleaning machines and air compressors, existing motor brackets have many problems that urgently need to be solved: First, carbon brushes generate a lot of heat when sliding at high speed and switching current. Traditional carbon brush holders have a closed cylindrical structure, which has poor heat dissipation and leads to heat accumulation. This can cause the carbon brush powder or the brush body to stick together thermally, resulting in the carbon brush getting stuck, which in turn can cause the motor to fail or even burn out. Second, the motor is in a high-frequency vibration environment for a long time. If the carbon brush braid is not firmly fixed, the brush body and the brush braid may become loose or the brush braid may break, causing the motor to fail to work properly. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a multifunctional motor bracket, which effectively solves the issues mentioned in the background art.

[0005] The technical solution adopted in this utility model is:

[0006] A multifunctional motor bracket includes a carbon brush bracket, a cover, and a pair of carbon brush mounting assemblies symmetrically arranged on both sides of the carbon brush bracket. Each carbon brush mounting assembly includes a carbon brush receiving hole with a heat dissipation window on its outer side and a carbon brush braid outlet on one side of the carbon brush receiving hole. The cover has a carbon brush braid fixing groove on its outer side. A torsion spring is mounted on the carbon brush bracket; one end of the torsion spring is pressed against the outlet of the carbon brush braid fixing groove to press the carbon brush braid into the groove, and the other end is located at the heat dissipation window to press the carbon brush installed in the carbon brush receiving hole inward. The torsion spring is mounted and fixed by a torsion spring positioning post on the carbon brush bracket.

[0007] Preferably, at least one ventilation and heat dissipation groove is provided on the periphery of the carbon brush receiving hole.

[0008] Preferably, the cover has an inverted buckle fixed at the entrance of the carbon brush braid fixing groove.

[0009] Preferably, the carbon brush braid installed in the carbon brush receiving hole leaves the carbon brush receiving hole from the carbon brush braid outlet and is locked in the carbon brush braid fixing groove. The carbon brush braid is locked in the carbon brush braid fixing groove by an inverted buckle at the entrance of the carbon brush braid fixing groove, and the carbon brush braid is limited in the carbon brush braid fixing groove by one end of a torsion spring at the exit, thereby fixing the carbon brush braid.

[0010] Preferably, the shape of the carbon brush braid fixing groove matches the carbon brush braid, so that the carbon brush braid can be locked in the carbon brush braid fixing groove without loosening.

[0011] Preferably, the carbon brush holder, cover, carbon brush braid fixing groove, torsion spring positioning post and buckle are integrally molded from block molding compound.

[0012] This utility model closely addresses the core pain points of existing technologies, such as carbon brush overheating and adhesion, and unreliable carbon brush braid fixing. It makes breakthroughs in design from three dimensions: material selection, structural integration, and multi-functional components, as detailed below:

[0013] 1. Material Innovation: Application of BMC Material in Integrated Compression Molding

[0014] Innovation: Using block molding compound (BMC) as the core material, key components such as carbon brush bracket, cover, carbon brush braid fixing groove, torsion spring positioning post and buckle are integrally molded through molding process, which abandons the traditional motor bracket processing and splicing assembly mode, and avoids the defects of ordinary engineering plastics and metal materials.

[0015] Beneficial effects: On the one hand, BMC material itself has excellent electrical insulation, high temperature resistance, dimensional stability and mechanical strength, making it perfectly suited for harsh working conditions with strong vibration and high temperature, such as cleaning machines and air compressors, solving the problems of easy deformation of ordinary plastics at high temperatures and complex processing of metal materials; on the other hand, the one-piece molding process reduces the number of component assembly steps, reduces production errors and assembly costs, and at the same time improves the overall stability of the bracket structure, avoiding the loosening problem that occurs when the components are connected under high frequency vibration.

[0016] 2. Innovative heat dissipation structure: Composite carbon brush heat dissipation design

[0017] Innovation: Breaking through the design limitations of traditional sealed cylindrical carbon brush receiving holes, a composite heat dissipation structure of "heat dissipation window + ventilation heat dissipation groove" is adopted. A heat dissipation window is opened on the outside of the carbon brush receiving hole, and at least one additional ventilation heat dissipation groove is added around the perimeter to construct a multi-channel heat dissipation path.

[0018] Beneficial effects: It completely solves the industry pain point of carbon brush overheating and sticking. The heat dissipation window and ventilation heat dissipation groove work together to greatly enhance the air convection in the carbon brush receiving hole, which can quickly remove the large amount of heat generated when the carbon brush slides at high speed and switches current, and significantly reduce the local temperature of the carbon brush cavity. At the same time, the ventilation heat dissipation groove also has the function of carbon powder discharge, which can remove the conductive carbon powder generated by the carbon brush in time, avoid the short circuit fault caused by carbon powder accumulation in the cavity, and further ensure the safe operation of the motor.

[0019] 3. Innovative carbon brush braid fixing: a double-limiting structure of inverted buckle + torsion spring.

[0020] Innovation: A dual fixing mechanism of "inlet buckle + outlet torsion spring" is designed. The inlet of the carbon brush braid fixing groove is equipped with an inlet buckle, and the outlet is pressed and limited by one end of the torsion spring. The shape of the fixing groove is precisely matched with the carbon brush braid. At the same time, it is combined with the carbon brush braid outlet on one side of the carbon brush receiving hole to form a complete fixing path of "outlet-insert-double fixing".

[0021] Beneficial effects: It comprehensively solves the problem of unreliable carbon brush braid fixing. The inverted design locks the carbon brush braid in the fixing groove from the inlet, preventing it from falling out. The torsion spring further compresses and limits the position from the outlet. Even if the subsequent wiring screws loosen, the carbon brush braid will not fall off due to motor vibration, achieving absolute reliability of electrical connection. In addition, the groove design adapted to the shape of the carbon brush braid avoids the carbon brush braid from shaking in the groove, reduces the risk of increased contact resistance and local overheating, and extends the service life of the carbon brush braid.

[0022] 4. Component Functional Innovation: Multifunctional Integrated Design of Torsion Springs

[0023] Innovation: The torsion spring is given dual core functions, breaking away from the design thinking of single-function components. One end of the torsion spring is pressed against the outlet of the carbon brush braid fixing groove to fix the carbon brush braid; the other end extends to the heat dissipation window to press the carbon brush in the carbon brush receiving hole inward, and achieves stable installation through the torsion spring positioning post on the carbon brush bracket.

[0024] Beneficial effects: Without adding extra components, it achieves the dual functions of "carbon brush fixing" and "carbon brush braid fixing", which simplifies the overall structure of the bracket, reduces the number of components, and saves internal installation space. At the same time, the elastic clamping force of the torsion spring can adapt to the length changes during the carbon brush wear process, always maintaining stable contact between the carbon brush and the commutator, improving the stability of motor commutation, and indirectly extending the service life of the carbon brush. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Furthermore, in the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0034] like Figure 1-2 As shown, a multifunctional motor bracket includes a carbon brush bracket 1, a cover 2, and a pair of carbon brush mounting assemblies 3 symmetrically arranged on both sides of the carbon brush bracket 1. The carbon brush mounting assembly 3 includes a carbon brush receiving hole 31, a heat dissipation window 32 is provided on the outer side of the carbon brush receiving hole 31, and a carbon brush braid outlet 33 is provided on one side of the carbon brush receiving hole 31. A carbon brush braid fixing groove 34 is provided on the outer side of the cover 2. A torsion spring 35 is provided on the carbon brush bracket 1. One end of the torsion spring 35 is pressed against the outlet of the carbon brush braid fixing groove 34 to press the carbon brush braid 4 into the carbon brush braid fixing groove 34, and the other end is located at the heat dissipation window 32 to press the carbon brush 5 installed in the carbon brush receiving hole 31 inward. The torsion spring 35 is installed and fixed by a torsion spring positioning post 36 on the carbon brush bracket 1.

[0035] At least one ventilation and heat dissipation groove 37 is provided on the periphery of the carbon brush receiving hole 31.

[0036] The cover 2 is fixed with an inverted buckle 38 at the entrance of the carbon brush braid fixing groove 34.

[0037] The carbon brush braid 4 of the carbon brush 5 installed in the carbon brush receiving hole 31 leaves the carbon brush receiving hole 31 from the carbon brush braid outlet 33 and is stuck in the carbon brush braid fixing groove 34. The carbon brush braid 4 is locked in the carbon brush braid fixing groove 34 by the inverted buckle 38 at the entrance of the carbon brush braid fixing groove 34, and the carbon brush braid 4 is limited in the carbon brush braid fixing groove 34 by one end of the torsion spring 35 at the exit, thereby fixing the carbon brush braid 4.

[0038] The shape of the carbon brush braid fixing groove 34 matches the carbon brush braid 4, so that the carbon brush braid 4 can be locked in the carbon brush braid fixing groove 34 without loosening.

[0039] The carbon brush holder 1, cover 2, carbon brush braid fixing groove 34, torsion spring positioning post 36 and buckle 38 are integrally molded from block molding compound.

[0040] This invention aims to solve two major pain points: carbon brush overheating and sticking, and unreliable carbon brush braid fixing. Utilizing the integrated material properties and the coordinated design of each component, it achieves stable operation under harsh conditions of strong vibration and high temperature. The working principles of each core system are described in detail below:

[0041] 1. Working principle of composite heat dissipation system:

[0042] This system employs a combination of heat dissipation windows and ventilation slots to create a dual-pathway system for open convection cooling and toner removal, effectively preventing carbon brush overheating and sticking at the source. During motor operation, the carbon brush slides at high speed within the brush housing and switches currents, continuously generating significant heat and conductive toner. The heat dissipation window on the outside of the brush housing directly connects the housing to the outside of the motor, providing a primary channel for heat dissipation. At least one ventilation slot added around the housing further expands the heat dissipation path. This slot directly connects to the internal cooling airflow channel of the motor. During operation, internal cooling airflow and external natural airflow enter the brush housing area through the heat dissipation window and then quickly exit through the ventilation slot, forming an efficient convection circulation that rapidly removes accumulated heat from the carbon brush and surrounding components. This significantly reduces the local temperature of the carbon brush cavity, preventing the carbon brush powder or body from thermally bonding due to high temperatures. Simultaneously, conductive toner generated by brush wear is discharged synchronously through the ventilation slot and heat dissipation window, preventing toner buildup within the cavity and ensuring smooth brush commutation.

[0043] 2. Working principle of the carbon brush braid double limit fixing system:

[0044] This system follows a progressive working logic of lead-in-lock-double fixation. Utilizing the synergistic effect of the lead-in outlet, the adaptable fixing groove, the buckle, and the torsion spring, it achieves absolute and stable fixation of the carbon brush braid under high-frequency vibration environments: First, the carbon brush braid lead-in outlet on one side of the carbon brush receiving hole provides a precise exit path for the carbon brush braid, preventing it from tangling, twisting, or experiencing uneven stress within the receiving hole. Then, the led-in carbon brush braid locks into the carbon brush braid fixing groove on the outside of the cover. Because the shape of the fixing groove precisely matches the carbon brush braid, initial positioning of the carbon brush braid is achieved, preventing lateral swaying. Finally, the carbon brush braid is fixed... The inverted buckle at the inlet of the slot will firmly lock the carbon brush braid, forming the first line of defense to prevent the carbon brush braid from coming off from the inlet end. Finally, one end of the torsion spring on the carbon brush bracket presses against the outlet of the carbon brush braid fixing slot, forming the second line of defense. Even if the motor vibrates at high frequency for a long time and the subsequent wiring screws loosen, the carbon brush braid can still maintain a stable position under the dual constraints of the inlet buckle and the outlet torsion spring, and will not loosen, fall off or break. At the same time, the stable installation state ensures good contact between the carbon brush braid and the wiring terminal, avoiding local overheating caused by increased contact resistance.

[0045] 3. Multifunctional collaborative working principle of torsion springs:

[0046] As a core multi-functional component, the torsion spring, based on the torsion spring positioning post, simultaneously performs two functions: carbon brush clamping and carbon brush braid limiting. Adapting to changes in operating conditions during dynamic motor operation, the torsion spring is securely installed via the torsion spring positioning post on the carbon brush bracket, ensuring it will not shift in the high-frequency vibration environment of the motor. This provides structural support for the stable operation of its dual functions: On one hand, the torsion spring extends to one end of the heat dissipation window, continuously applying an inward elastic clamping force to the carbon brush in the carbon brush receiving hole. This elastic pressure has dynamic adaptability; as the carbon brush gradually wears and shortens during use, the elastic deformation of the torsion spring adjusts accordingly, always maintaining a tight fit between the carbon brush and the motor commutator, ensuring the stability of current switching and improving the motor's commutation performance. On the other hand, the torsion spring is clamped at one end of the carbon brush braid fixing slot outlet, restricting the longitudinal movement of the carbon brush braid within the slot through continuous clamping force. This forms a reverse constraint with the inverted inlet, further strengthening the fixing effect of the carbon brush braid and achieving a synergistic effect of mechanical fixing and elastic limiting.

[0047] 4. Working principle of integrated structural support:

[0048] The carbon brush holder, cover, carbon brush braid fixing groove, torsion spring positioning post, and buckle are integrally molded from block molding compound (BMC). This structure provides a fundamental guarantee for the stable operation of the above three systems. The BMC material itself has excellent high temperature resistance, electrical insulation, dimensional stability, and mechanical strength. Under harsh working conditions of strong vibration and high temperature, such as cleaning machines and air compressors, it will not suffer from the high temperature deformation and cracking of ordinary plastics, or the easy corrosion and insufficient processing precision of metal materials. At the same time, the integral molding process eliminates the gaps and weak points in the connection caused by component assembly, which greatly improves the rigidity and stability of the overall structure of the holder. It can resist the impact of high frequency vibration on each functional component and prevent chain problems such as heat dissipation channel blockage and carbon brush braid fixing failure caused by component loosening. It ensures the long-term stable and coordinated operation of the heat dissipation system, carbon brush braid fixing system, and torsion spring functional system.

[0049] Finally, it should be noted that the above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A multifunctional motor bracket, characterized in that, The device includes a carbon brush holder (1), a cover (2), and a pair of carbon brush mounting components (3) symmetrically arranged on both sides of the carbon brush holder (1). The carbon brush mounting components (3) include a carbon brush receiving hole (31), a heat dissipation window (32) is provided on the outside of the carbon brush receiving hole (31), a carbon brush braid outlet (33) is provided on one side of the carbon brush receiving hole (31), a carbon brush braid fixing groove (34) is provided on the outside of the cover (2), and a torsion spring (35) is provided on the carbon brush holder (1). One end of the torsion spring (35) is pressed against the outlet of the carbon brush braid fixing groove (34) to press the carbon brush braid (4) into the carbon brush braid fixing groove (34), and the other end is located at the heat dissipation window (32) to press the carbon brush (5) installed in the carbon brush receiving hole (31) inward. The torsion spring (35) is installed and fixed by a torsion spring positioning post (36) on the carbon brush holder (1).

2. The multifunctional motor bracket according to claim 1, characterized in that, At least one ventilation and heat dissipation groove (37) is provided on the periphery of the carbon brush receiving hole (31).

3. A multifunctional motor bracket according to claim 2, characterized in that, The cover (2) is fixed with a buckle (38) at the entrance of the carbon brush braid fixing groove (34).

4. A multifunctional motor bracket according to claim 3, characterized in that, The carbon brush braid (4) of the carbon brush (5) installed in the carbon brush receiving hole (31) leaves the carbon brush receiving hole (31) from the carbon brush braid outlet (33) and is stuck in the carbon brush braid fixing groove (34). The carbon brush braid (4) is locked in the carbon brush braid fixing groove (34) by a buckle (38) at the entrance of the carbon brush braid fixing groove (34), and the carbon brush braid (4) is limited in the carbon brush braid fixing groove (34) by one end of a torsion spring (35) at the exit, thereby fixing the carbon brush braid (4).

5. A multifunctional motor bracket according to claim 4, characterized in that, The shape of the carbon brush braid fixing groove (34) matches the carbon brush braid (4), so that the carbon brush braid (4) can be locked in the carbon brush braid fixing groove (34) without loosening.

6. A multifunctional motor bracket according to claim 5, characterized in that, The carbon brush holder (1), cover (2), carbon brush braid fixing groove (34), torsion spring positioning post (36) and buckle (38) are integrally molded from block molding compound.

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