Electric brush assembly and electric brush thereof
By designing the adjustment mechanism and the structure of electrode rods and brush braids in the brush assembly, the problem of the inability of the brushes to adapt to commutators of different sizes and the inconvenience of replacement due to wear and tear of the brushes is solved, achieving close fit and close fit between the brushes and the commutator. Convenience of brush replacement.
Patent Information
- Application Number
- CN202420316799.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-02-21
AI Technical Summary
The existing brushes are fixed on the brush box and cannot adapt to commutators of different sizes, resulting in a not tight fit, affecting the normal operation of the equipment. At the same time, the brushes wear and need to be replaced regularly after long-term use, but installed and disassembly inconvenient.
A brush assembly is designed, including a brush holder and an adjustment mechanism. The position of the brush body is adjusted through an adjustment mechanism composed of a support rod, a limit rod and a torsion spring. Through the design of the electrode rod and the brush braid, Convenient to disassemble and replace the brush body.
The adjustment mechanism realizes the close fit between the brush body and the commutator, ensuring the normal operation of the equipment, and by simplifying the brush disassembly and assembly process, it facilitates the replacement of worn brushes.
Smart Images
Figure CN222381023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brushes, in particular to a brush assembly and a brush thereof. Background Art
[0002] Brushes, also known as carbon brushes, are widely used as sliding contacts in many electrical devices. The main materials used in carbon brush products are graphite, impregnated graphite, and metal (containing copper and silver) graphite. Carbon brushes are devices that transfer energy or signals between the fixed part and the rotating part of a motor, generator, or other rotating machinery. They are generally made of pure carbon and a coagulant. They are generally square in shape and are stuck on a metal bracket. There is a spring inside that presses it tightly against the shaft. When the motor rotates, the electrical energy is transmitted to the coil through the commutator.
[0003] However, the existing brushes are fixed in position on the brush box and cannot adapt to commutators of different sizes, resulting in a loose fit, which affects the normal operation of the equipment. In addition, the brushes will gradually wear out after long-term use and need to be replaced regularly. The installation and removal of the brushes on the brush box are inconvenient, which is not conducive to replacing the worn brushes.
[0004] Therefore, it is necessary to propose a brush assembly and a brush thereof to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a brush assembly and a brush thereof, so as to solve the problem that the existing brushes are fixed in position on the brush box and cannot adapt to commutators of different sizes, resulting in loose fit and affecting the normal operation of the equipment. In addition, the brushes will gradually wear out after long-term use and need to be replaced regularly, while the installation and removal of the brushes on the brush box are inconvenient, which is not conducive to replacing the worn brushes.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brush assembly, including a brush holder, an adjustment mechanism is arranged above the brush holder, the adjustment mechanism includes a support rod, a limit rod is fixedly installed on the top of the support rod, a torsion spring is movably sleeved on the limit rod, a first connecting rod is fixedly connected to one end of the torsion spring, a mounting seat is hinged on the end of the first connecting rod away from the torsion spring, and a second connecting rod is fixedly connected to the other end of the torsion spring.
[0007] Preferably, a slot is provided at the top of the support rod, and the second connecting rod is movably installed in the slot. There are a plurality of slots, and the plurality of slots are distributed in a circle.
[0008] Preferably, an electrode rod is movably inserted into the mounting seat, and two electrode rods are provided, and the two electrode rods are distributed in a mirror image.
[0009] Preferably, a brush holder is fixedly mounted on the upper surface of the brush holder, the brush holder is in an L-shaped structure, and the support rod is fixedly mounted on the brush holder.
[0010] Preferably, a brush box is fixedly mounted on the upper surface of the brush holder, a brush body is movably inserted into the brush box, and the brush body is fixedly mounted on the mounting seat via an electrode rod.
[0011] Preferably, a fixing plate is provided on one end of the electrode rod close to the torsion spring, the two electrode rods are fixedly mounted on the mounting seat via the fixing plate, and a brush braid is fixedly connected to one end of the electrode rod away from the fixing plate.
[0012] Preferably, a wiring terminal is fixedly connected to one end of the brush braid away from the electrode rod, and the wiring terminal is fixedly mounted on the brush holder.
[0013] The utility model also discloses an electric brush which is applied to an electric brush assembly. The electric brush body is in a T-shaped structure. One end of the electric brush body extending into the electric brush box is provided with a round hole for inserting an electrode rod.
[0014] Technical effects and advantages of the utility model:
[0015] 1. The utility model fixes the torsion spring by inserting the second connecting rod into the slot, thereby adjusting the position of the brush body, so that the brush body fits the commutator and ensures the working effect;
[0016] 2. The utility model separates the fixing plate from the electrode rod, and pulls the electrode rod out from the mounting seat, so that the brush body is separated from the mounting seat, thereby realizing the disassembly and assembly of the worn brush body, which is convenient for subsequent replacement. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The utility model is a schematic diagram of the brush assembly and the brush structure thereof.
[0018] Figure 2 For this utility model Figure 1 A magnified view of the structure in the middle.
[0019] Figure 3 It is a schematic structural diagram of the torsion spring, the first connecting rod and the second connecting rod of the utility model.
[0020] Figure 4 This is a cross-sectional view of the brush body of the utility model.
[0021] In the figure: 1. brush holder; 2. brush holder; 3. brush body; 4. support rod; 5. brush box; 6. torsion spring; 7. mounting seat; 8. limit rod; 9. slot; 10. fixing plate; 11. electrode rod; 12. first connecting rod; 13. second connecting rod; 14. brush braid; 15. terminal. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The utility model provides Figure 1-Figure 4 A brush assembly shown includes a brush holder 1, which is used to connect the brush to other parts of the motor. A brush holder 2 is fixedly installed on the upper surface of the brush holder 1. The brush holder 2 is used to ensure that the brush has an accurate position on the commutator. The brush holder 2 is an L-shaped structure. A brush box 5 is fixedly installed on the upper surface of the brush holder 2. The brush box 5 is used to support the brush.
[0024] It should be noted that the commutator is a common motor component in the prior art and will not be described in detail here.
[0025] Furthermore, a brush body 3 is movably provided on the brush box 5. The brush body 3 is a brush assembly commonly used in the prior art for conducting current, and is usually made of graphite, and has good electrical conductivity, thermal conductivity and lubricity, which will not be described in detail here.
[0026] An adjustment mechanism is arranged above the brush holder 1, and the adjustment mechanism includes a support rod 4, which is used to cooperate with a limiting rod 8 to limit the torsion spring 6. The support rod 4 is fixedly mounted on the brush holder 2, and a limiting rod 8 is fixedly mounted on the top of the support rod 4. A torsion spring 6 is movably sleeved on the limiting rod 8, and a first connecting rod 12 is fixedly connected to one end of the torsion spring 6, and a mounting seat 7 is hinged on the end of the first connecting rod 12 away from the torsion spring 6.
[0027] Considering that the brush body 3 will gradually wear out after long-term use and needs to be replaced regularly, and the brush body 3 is inconvenient to install and disassemble on the brush box 5, which is not conducive to replacing the worn brush body 3, therefore, an electrode rod 11 is movably inserted into the mounting seat 7, and the electrode rod 11 is used to conduct current to the brush body 3 and fix the brush body 3. Two electrode rods 11 are provided, and the two electrode rods 11 are distributed in a mirror image, and the brush body 3 is fixedly mounted on the mounting seat 7 through the electrode rod 11.
[0028] A fixing plate 10 is provided on one end of the electrode rod 11 close to the torsion spring 6. The fixing plate 10 is used to fix the electrode rod 11 to prevent the brush body 3 from being separated from the electrode rod 11 during operation. The two electrode rods 11 are fixedly mounted on the mounting seat 7 through the fixing plate 10. A brush braid 14 is fixedly connected to one end of the electrode rod 11 away from the fixing plate 10. The brush braid 14 is used to transfer external current to the brush body 3.
[0029] When the worn brush body 3 needs to be replaced, the fixing plate 10 is separated from the electrode rod 11, and the electrode rod 11 is pulled out from the mounting seat 7, so that the brush body 3 is separated from the mounting seat 7, and the brush body 3 is taken out from the brush box 5, thereby realizing the disassembly and assembly of the worn brush body 3, which is convenient for subsequent replacement.
[0030] Furthermore, a terminal 15 is fixedly connected to one end of the brush braid 14 away from the electrode rod 11 . The terminal 15 is used to connect an external current connector to the brush braid 14 . The terminal 15 is fixedly mounted on the brush holder 2 .
[0031] It should be noted that the current connector is a common component in the prior art for supplying power to the motor, and will not be described in detail here.
[0032] Considering that the position of the brush body 3 on the brush box 5 is fixed and cannot adapt to commutators of different sizes, resulting in loose fit and affecting the normal operation of the equipment, a second connecting rod 13 is fixedly connected to the other end of the torsion spring 6 .
[0033] Furthermore, a slot 9 is provided at the top of the support rod 4, and the second connecting rod 13 is movably installed in the slot 9. There are a plurality of slots 9, and the plurality of slots 9 are distributed in a circle.
[0034] During specific operation, by rotating the torsion spring 6, the first connecting rod 12 drives the brush body 3 to slide in the brush box 5. When the brush body 3 fits with the commutator, the second connecting rod 13 is inserted into the slot 9 to fix the torsion spring 6, thereby adjusting the position of the brush body 3 so that the brush body 3 fits with the commutator to ensure the working effect.
[0035] It should be noted that in actual use, due to the large number of types of motors, there are various specifications of the brush body 3 and the commutator. In order to make the commutator match more types of brush bodies 3, an adjustable torsion spring 6 is provided. When the torsion spring 6 is inserted into the corresponding slot 9, the position of the brush body 3 can be adjusted within a certain range, so that the brush body 3 is fully fitted with the commutator surface, which is convenient and practical.
[0036] The utility model also discloses a brush which is used in a brush assembly. The brush body 3 is in a T-shaped structure. One end of the brush body 3 extending into the brush box 5 is provided with a round hole for inserting an electrode rod 11. The brush body 3 is used in conjunction with the brush assembly, which is convenient for replacement and adjustment and has a wider range of applications.
Claims
1. A brush assembly, comprising a brush holder (1), characterized in that: An adjustment mechanism is arranged above the brush holder (1), and the adjustment mechanism comprises a support rod (4), a limit rod (8) is fixedly mounted on the top of the support rod (4), a torsion spring (6) is movably sleeved on the limit rod (8), a first connecting rod (12) is fixedly connected to one end of the torsion spring (6), a mounting seat (7) is hingedly connected to the end of the first connecting rod (12) away from the torsion spring (6), and a second connecting rod (13) is fixedly connected to the other end of the torsion spring (6).
2. A brush assembly according to claim 1, characterized in that: A slot (9) is provided at the top of the support rod (4), and the second connecting rod (13) is movably installed in the slot (9). A plurality of slots (9) are provided, and the plurality of slots (9) are distributed in a circular pattern.
3. A brush assembly according to claim 1, characterized in that: An electrode rod (11) is movably mounted on the mounting seat (7), two electrode rods (11) are provided, and the two electrode rods (11) are distributed in a mirror image.
4. A brush assembly according to claim 1, characterized in that: A brush holder (2) is fixedly mounted on the upper surface of the brush holder (1); the brush holder (2) is in an L-shaped structure; and the support rod (4) is fixedly mounted on the brush holder (2).
5. A brush assembly according to claim 4, characterized in that: A brush box (5) is fixedly mounted on the upper surface of the brush holder (2), a brush body (3) is movably inserted into the brush box (5), and the brush body (3) is fixedly mounted on a mounting seat (7) via an electrode rod (11).
6. A brush assembly according to claim 3, characterized in that: A fixing plate (10) is provided on one end of the electrode rod (11) close to the torsion spring (6), the two electrode rods (11) are fixedly mounted on the mounting seat (7) via the fixing plate (10), and a brush braid (14) is fixedly connected to one end of the electrode rod (11) away from the fixing plate (10).
7. A brush assembly according to claim 6, characterized in that: A wiring terminal (15) is fixedly connected to one end of the brush braid (14) away from the electrode rod (11), and the wiring terminal (15) is fixedly mounted on the brush holder (2).
8. A brush, characterized in that: Applicable to the brush assembly described in any one of claims 1 to 7, the brush body (3) is in a T-shaped structure, and one end of the brush body (3) extending into the brush box (5) is provided with a round hole for the electrode rod (11) to be inserted.