Motor rear support and motor
By designing an integrated rear motor bracket, which includes a fixing boss and a limiting torsion spring, the problems of carbon brush loosening and wear were solved, achieving efficient motor operation and long service life, and reducing maintenance costs.
Patent Information
- Application Number
- CN202423174567.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Traditional motor rear brackets are inadequate in installing and limiting carbon brushes, leading to loose or uneven wear of the carbon brushes, which affects the motor's operating efficiency and lifespan.
Design an integrally molded motor rear bracket, including a cross arm and a support arm, with a fixing boss and mounting groove to accommodate carbon brushes, and a limiting torsion spring to ensure that the carbon brushes are tightly fitted with the motor spindle, simplifying the assembly process and enhancing the bracket strength.
It improves the operational stability of the motor and the service life of the carbon brushes, simplifies the maintenance process, and reduces maintenance costs.
Smart Images
Figure CN223744489U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor component technical field, especially a motor rear support and motor. BACKGROUND
[0002] As an indispensable power device in modern industry and daily life, the optimization of the performance and structure of the motor has always been the focus of research and development. As an important component of the motor, the motor rear support not only requires sufficient strength and rigidity to support the motor body, but also needs to be reasonably arranged to facilitate the assembly and maintenance of the motor. The traditional motor rear support often only has the basic support function, and the installation and limiting of the vulnerable parts such as the carbon brush inside the motor are not considered, which leads to the carbon brush being easy to loosen or unevenly worn in the use process, affecting the operation efficiency and service life of the motor. SUMMARY
[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a motor rear support which can simplify the assembly process of the motor and improve the working stability and service life of the carbon brush.
[0004] According to the motor rear support of the first aspect embodiment of the utility model, the motor rear support comprises a cross arm and two supporting arms arranged on both sides of the cross arm, the cross arm and the supporting arm are integrally formed, the supporting arm is provided with a penetrating fixing hole, the fixing hole is provided with a motor fastener for connection, the cross arm is provided with a central passage for accommodating the motor main shaft, a fixing boss is arranged between the cross arm and the supporting arm, the fixing boss is provided with an installation slot with an opening on the side, the installation slot is communicated with the central passage and used for accommodating the carbon brush, a step is arranged between the cross arm and the supporting arm, the fixing boss is connected to the step, the step is provided with an installation column, the installation column is adjacent to the fixing boss, a limiting torsion spring is arranged around the installation column, one end of the limiting torsion spring abuts against the side of the cross arm, and the other end of the limiting torsion spring abuts against the carbon brush through the installation slot, so that the carbon brush is tightly attached to the motor main shaft.
[0005] According to the motor rear support of the utility model embodiment, the integrally formed design of the cross arm and the supporting arm and the arrangement of the fixing boss and the step effectively enhance the overall strength and rigidity of the motor rear support and improve the carrying capacity of the motor. By directly integrating the installation and limiting structure of the carbon brush into the motor rear support, the need for additional components is reduced, and the assembly process of the motor is simplified. The limiting torsion spring ensures the tight attachment between the carbon brush and the motor main shaft, which can maintain good electrical contact even in a long-time running or vibrating environment, thereby improving the operation stability of the motor. The side opening design of the installation slot makes the replacement and inspection of the carbon brush simple and fast, thereby reducing the maintenance cost.
[0006] According to some embodiments of the utility model, the opening is located on the side of the fixed boss away from the cross arm and extends towards the side of the mounting column.
[0007] According to some embodiments of the utility model, the side wall of the fixed boss is provided with an elongated accommodation gap, which is only close to the side of the mounting column and is communicated with the opening, and the accommodation gap is used to accommodate the limiting torsional spring to pass through and extend into the mounting groove.
[0008] According to some embodiments of the utility model, the fixed boss is provided with a guide inclined wall located at the connection between the opening and the accommodation gap to guide the limiting torsional spring to move towards the central passage.
[0009] According to some embodiments of the utility model, the two arms are respectively provided with two fixed bosses and two mounting columns, and the two fixed bosses and the two mounting columns are respectively arranged in an arc-shaped staggered manner along the axis of the central passage.
[0010] According to some embodiments of the utility model, the step is provided with a guide groove, the guide groove is a circular groove, the fixing hole is arranged at the groove bottom of the guide groove, and the groove wall of the guide groove is used to guide the fastener to pass through the fixing hole.
[0011] According to some embodiments of the utility model, the side of the cross arm is provided with a limiting clamping table, the limiting clamping table is arranged adjacent to the mounting column, and the limiting torsional spring can abut against the bottom of the limiting clamping table to limit the limiting torsional spring from falling off.
[0012] According to some embodiments of the utility model, the bottom of the arm is provided with a positioning convex column, the positioning convex column is arranged adjacent to the fixing hole to assist in positioning and connecting to the motor.
[0013] According to some embodiments of the utility model, a plurality of reinforcing ribs are arranged between the fixed boss, the cross arm and the arm.
[0014] According to the motor of the second aspect of the utility model, the motor rear support is as any one of the above.
[0015] The motor according to the utility model has the advantages that: the motor adopts the motor rear support with optimized design, so that the motor has higher operation efficiency and stability, longer service life and lower maintenance cost. The motor is suitable for various application scenarios requiring efficient and stable operation, such as electric vehicles, household appliances, industrial machinery, etc.
[0016] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS
[0017] The present application will be further described below in conjunction with the drawings and embodiments, wherein:
[0018] Figure 1 A schematic view of a motor rear support according to an embodiment of the present application.
[0019] Reference signs: cross arm 100; center passage 110; limiting card table 120; support arm 200; fixed hole 210; positioning convex column 220; fixed convex table 300; installation groove 310; opening 311; let go gap 320; guide inclined wall 330; step 400; installation column 410; limiting torsional spring 411; guide groove 420; reinforcing rib 500. DETAILED DESCRIPTION
[0020] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0021] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship of the upper, lower, front, rear, left, right, etc. indicated is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0022] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, second is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.
[0023] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood broadly, and the skilled in the art can determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.In the description of the utility model, the description of reference terms '' an embodiment '', '' some embodiments '', '' illustrative embodiment '', '' example '', '' specific example '' or '' some examples '' means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In the description of the present application, the description of reference terms '' an embodiment '', '' some embodiments '', '' illustrative embodiment '', '' example '', '' specific example '' or '' some examples '' means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0024] With reference to Figure 1 The utility model provides a motor rear support, including cross arm 100 and two branch 200 of setting apart in cross arm 100 both sides, cross arm 100 and branch 200 integrally formed setting, branch 200 is provided with the fixed hole 210 of through, the fixed hole 210 is provided with the fastener for connecting motor, cross arm 100 is provided with the center passage 110 of accommodating motor main shaft through, cross arm 100 with branch 200 between being provided with fixed boss 300, fixed boss 300 is provided with the installation slot 310 of having opening 311 in side portion, installation slot 310 is communicated center passage 110, for accommodating carbon brush, cross arm 100 with branch 200 between having step 400, fixed boss 300 is connected in step 400, step 400 is provided with installation column 410, installation column 410 is adjacent with fixed boss 300, installation column 410 is provided with limit torsional spring 411 around, one end of limit torsional spring 411 abuts cross arm 100's side portion, the other end passes through installation slot 310 and abuts carbon brush, to make carbon brush and motor main shaft closely adhere.
[0025] In specific embodiments, the cross arm 100 serves as the main body of the bracket, and is designed to laterally support the motor, ensuring the stability of the motor installation. The cross arm 100 is provided with a central passage 110 for accommodating the passage of the motor main shaft, ensuring that the motor main shaft can be accurately and stably positioned on the bracket. Two support arms 200 are respectively arranged on both sides of the cross arm 100 and are integrally formed with the cross arm 100, enhancing the overall strength and rigidity of the bracket. The support arm 200 is provided with a through fixing hole 210, which is used to pass through the motor fastener such as a bolt or a screw, to realize the reliable connection of the bracket with the motor or other mounting surface. A fixing boss 300 is arranged between the cross arm 100 and the support arm 200, and the fixing boss 300 is provided with a mounting groove 310 having an opening 311 on the side. The mounting groove 310 not only communicates with the central passage 110, but is also specially designed to accommodate the carbon brush, so that the carbon brush can be conveniently installed near the motor main shaft and facilitate contact with the commutator or collector ring on the main shaft. A step 400 structure is formed between the cross arm 100 and the support arm 200, and the fixing boss 300 is connected to the step 400. The step 400 is further provided with a mounting column 410, which is arranged adjacent to the fixing boss 300. A limit torsion spring 411 is arranged around the mounting column 410, one end of the torsion spring abuts against the side of the cross arm 100, and the other end abuts against the carbon brush through the mounting groove 310. This design enables the carbon brush to tightly fit the motor main shaft when subjected to the elastic force of the limit torsion spring 411, ensuring good electrical contact, while reducing the shaking of the carbon brush during operation and prolonging the service life.
[0026] It can be understood that the integrally formed design of the cross arm 100 and the support arm 200, as well as the arrangement of the fixing boss 300 and the step 400, effectively enhances the overall strength and rigidity of the motor rear bracket and improves the load capacity of the motor. By integrating the installation and limiting structure of the carbon brush directly into the motor rear bracket, the need for additional components is reduced, and the assembly process of the motor is simplified. The limit torsion spring 411 ensures the tight fit between the carbon brush and the motor main shaft, maintaining good electrical contact even in long-term operation or vibration environment, improving the operation stability of the motor. The side opening 311 design of the mounting groove 310 makes the replacement and inspection of the carbon brush simple and fast, reducing maintenance costs.
[0027] Referring to Figure 1 , specifically, the opening 311 of the motor rear bracket is located on the side of the fixing boss 300 away from the cross arm 100 and extends towards the side of the mounting column 410, so that when assembling the carbon brush, the carbon brush can be more conveniently inserted into the mounting groove 310 from the side, while ensuring that the carbon brush can be stably positioned near the motor main shaft after installation. The extension direction of the opening 311 helps to guide the carbon brush to correctly align with the motor main shaft, reducing assembly errors.
[0028] Further, the side wall of the fixing boss 300 is provided with an elongated accommodation notch 320. The accommodation notch 320 is located only close to one side of the mounting column 410 and is connected to the opening 311. In this way, the limiting torsion spring 411 can conveniently pass through the accommodation notch 320 and extend into the mounting groove 310 to abut against the carbon brush. The provision of the accommodation notch 320 avoids interference between the limiting torsion spring 411 and other parts of the fixing boss 300 during installation, ensuring smooth installation.
[0029] It should be noted that, with reference to Figure 1 , the fixing boss 300 is also provided with a guide inclined wall 330. The guide inclined wall 330 is located at the connection between the opening 311 and the accommodation notch 320, and its function is to guide the limiting torsion spring 411 to move towards the central passage 110. The design of the guide inclined wall 330 makes the limiting torsion spring 411 more smoothly enter the mounting groove 310 during installation, and accurately abut against the carbon brush, improving the efficiency and accuracy of installation.
[0030] With reference to Figure 1 , in some embodiments, the two supporting arms 200 are respectively provided with two fixing bosses 300 and two mounting columns 410. These fixing bosses 300 and mounting columns 410 are respectively arranged in an arc-shaped staggered manner along the axis of the central passage 110, so that the distribution of the carbon brushes on the motor main shaft is more uniform, which helps to reduce the wear of the carbon brushes and improve the operating efficiency of the motor. At the same time, the arc-shaped staggered arrangement also increases the structural strength of the motor rear support.
[0031] It should be noted that the step 400 is provided with a guide groove 420, which is a circular groove shape, and the fixing hole 210 is arranged at the groove bottom of the guide groove 420. The groove wall of the guide groove 420 is used to guide the fastener to pass through the fixing hole 210, so that the fastener can be more accurately positioned in the fixing hole 210 during installation, avoiding deviation and looseness during installation. The design of the guide groove 420 also increases the contact area between the fastener and the step 400, improving the stability and reliability of the connection.
[0032] In some embodiments, the side of the cross arm 100 is provided with a limiting clamping table 120. The limiting clamping table 120 is arranged adjacent to the mounting column 410, and the limiting torsion spring 411 can abut against the bottom of the limiting clamping table 120. In this way, the limiting torsion spring 411 can be effectively limited in the predetermined position after installation, preventing it from falling off or loosening, improving the overall stability and safety of the motor rear support.
[0033] With reference to Figure 1The bottom of the branch arm 200 is provided with a positioning protruding column 220. The positioning protruding column 220 is arranged adjacent to the fixing hole 210 to assist in positioning the motor. The positioning protruding column 220 enables the motor rear support to be more accurately positioned on the mounting surface of the motor during installation, avoiding deviation and misplacement during installation. At the same time, the positioning protruding column 220 also increases the connection strength between the motor rear support and the motor.
[0034] In some embodiments, a plurality of reinforcing ribs 500 are arranged between the fixed boss 300, the cross arm 100 and the branch arm 200. The reinforcing ribs 500 serve to improve the overall structural strength of the motor rear support, preventing deformation or damage during use. The arrangement of the reinforcing ribs 500 also makes the motor rear support more robust and durable, extending its service life.
[0035] The utility model also proposes a motor containing the above motor rear support. The motor has higher operating efficiency and stability, longer service life and lower maintenance cost due to the adoption of the optimally designed motor rear support. The motor is suitable for various application scenarios requiring efficient and stable operation, such as electric vehicles, household appliances, industrial machinery, etc.
[0036] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.
Claims
1. An electric machine rear support, characterized in that, The motor rear bracket comprises a cross arm and two branch arms arranged on both sides of the cross arm, the cross arm and the branch arms are integrally formed, the branch arms are provided with penetrating fixing holes for connecting motor fasteners, the cross arm is provided with a central passage for accommodating a motor main shaft, a fixing boss is arranged between the cross arm and the branch arms, the fixing boss is provided with a mounting groove with an opening on one side, the mounting groove is communicated with the central passage for accommodating a carbon brush, a step is arranged between the cross arm and the branch arms, the fixing boss is connected to the step, the step is provided with a mounting column adjacent to the fixing boss, a limit torsion spring is arranged around the mounting column, one end of the limit torsion spring abuts against one side of the cross arm, and the other end of the limit torsion spring abuts against the carbon brush through the mounting groove, so that the carbon brush is tightly attached to the motor main shaft. The opening is located on the side of the fixing boss away from the cross arm and extends towards the side of the mounting column.
2. The motor rear bracket according to claim 1, characterized by A long-shaped accommodation gap is arranged on the side wall of the fixing boss, the accommodation gap is only close to the side of the mounting column and is communicated with the opening, and the accommodation gap is used for accommodating the limit torsion spring to pass through and extend into the mounting groove.
3. The motor rear bracket according to claim 2, characterized by The fixing boss is provided with a guide inclined wall located at the connection between the opening and the accommodation gap, so as to guide the limit torsion spring to move towards the central passage.
4. The motor rear bracket according to claim 3, characterized by The two branch arms are respectively provided with two fixing bosses and two mounting columns, and the two fixing bosses and the two mounting columns are respectively arranged in an arc-shaped manner along the axis of the central passage.
5. The motor rear bracket according to claim 4, characterized by The step is provided with a guide groove, the guide groove is a circular groove, the fixing hole is arranged on the groove bottom of the guide groove, and the groove wall of the guide groove is used for guiding the fastener to pass through the fixing hole.
6. The motor back bracket of claim 1, wherein One side of the cross arm is provided with a limit clamping table adjacent to the mounting column, and the limit torsion spring can abut against the bottom of the limit clamping table to limit the limit torsion spring from falling off.
7. The motor back bracket of claim 1, wherein The bottom of the branch arm is provided with a positioning convex column adjacent to the fixing hole to assist in positioning the motor.
8. The motor back bracket of claim 1, wherein, The fixing boss, the cross arm and the branch arms are provided with a plurality of reinforcing ribs.
9. The motor back bracket of claim 1, wherein, The motor rear bracket comprises a cross arm and two branch arms arranged on both sides of the cross arm, the cross arm and the branch arms are integrally formed, the branch arms are provided with penetrating fixing holes for connecting motor fasteners, the cross arm is provided with a central passage for accommodating a motor main shaft, a fixing boss is arranged between the cross arm and the branch arms, the fixing boss is provided with a mounting groove with an opening on one side, the mounting groove is communicated with the central passage for accommodating a carbon brush, a step is arranged between the cross arm and the branch arms, the fixing boss is connected to the step, the step is provided with a mounting column adjacent to the fixing boss, a limit torsion spring is arranged around the mounting column, one end of the limit torsion spring abuts against one side of the cross arm, and the other end of the limit torsion spring abuts against the carbon brush through the mounting groove, so that the carbon brush is tightly attached to the motor main shaft.
10. An electric machine characterized by