A brush motor terminal connection structure with precision correction structure

Abstract

The utility model discloses a brush motor terminal connection structure with precision correction structure, aims at solving the technical problem that the welding mode of terminal and middle plate reduces the structural strength between terminal and middle plate in the prior art. Including middle plate, be provided with two symmetries mounting plate on the middle plate, and the terminal is installed in each mounting plate pressure joint, and the interval between the middle part of the side face of two mounting plates is H=X+1mm, and the outer surface of middle plate is provided with the precision adjustment gap of promotion assembly precision, and carbon brush assembly is still provided with on the middle plate, can effectively promote assembly precision through the increase precision adjustment gap, thereby can guarantee the motor in the assembly and use process keep consistent precision, can simultaneously restrain the resonance and noise problem caused by assembly deviation, effectively reduce resonance, reduce noise, and ensure that the performance of motor is consistent under different temperature and speed conditions, can, help to improve the consistency and life of complete machine.

Description

Technical Field

[0001] This utility model belongs to the field of brushed motor technology, specifically relating to a brushed motor terminal connection structure with a precision correction structure. Background Technology

[0002] In existing brushed motors, the connection between the terminals and the intermediate plate is generally achieved by welding. Although welding can provide a certain degree of fixation, it has the following disadvantages: welding is a complex process with high labor costs; welding thermal stress can reduce the structural strength between the terminals and the intermediate plate; it is difficult to maintain assembly consistency in automated production; in addition, if the layout distance of the carbon brushes inside the motor is not reasonable, it will directly affect the motor's lifespan and electrical performance. Moreover, during the process of joining the intermediate plate and the terminals, problems such as poor assembly, eccentricity, or resonance often occur due to dimensional errors or unoptimized geometric tolerances, which further leads to inconsistent motor noise and lifespan. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a brushed motor terminal connection structure with a precision correction structure, which aims to solve the technical problem that welding the terminals and the middle plate in the prior art will reduce the structural strength between the terminals and the middle plate.

[0005] (2) Technical solution

[0006] To solve the above-mentioned technical problems, this utility model provides a brushed motor terminal connection structure with a precision correction structure, including a middle plate, on which two symmetrical mounting plates are provided. Each mounting plate is press-fitted with a terminal. The distance between the middle of the two mounting plates on their adjacent sides is H = X + 1mm, where X is 15-30mm. The outer surface of the middle plate is provided with a precision adjustment gap to improve assembly accuracy. The middle plate is also provided with a carbon brush assembly.

[0007] Preferably, the carbon brush assembly includes a capacitor electrically connected to a terminal, an inductor electrically connected to a terminal, a brush arm electrically connected to the end of the inductor away from the terminal, and a carbon brush electrically connected to the end of the brush arm away from the inductor.

[0008] Furthermore, one end of the capacitor is electrically connected to the terminal, and the other end of the capacitor is embedded on the outer side of the middle plate.

[0009] Furthermore, the terminals are provided with snap-fit ​​slots for accommodating the capacitor and inductor ends.

[0010] Furthermore, the mounting plate has insertion slots for mounting terminals.

[0011] Furthermore, the outer surface of the middle plate is provided with multiple sets of correction structures, each set of correction structures is provided with multiple correction plates, and the spacing between two adjacent correction plates in each set of correction structures is the precision adjustment gap.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses a pressing method to replace the traditional welding process, avoiding welding, improving connection strength, and reducing labor costs and assembly complexity. Increasing the spacing optimizes the carbon brush layout and extends motor life. Increasing the precision adjustment gap effectively improves assembly accuracy, ensuring consistent motor precision during assembly and use. It also suppresses resonance and noise problems caused by assembly deviations, effectively reducing resonance and noise. Furthermore, it ensures consistent motor performance under different temperature and speed conditions, contributing to improved overall machine consistency and lifespan. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is a bottom view of the present invention;

[0018] Figure 4 This is a schematic diagram of the terminal of this utility model.

[0019] Figure 5 This is a schematic diagram of the middle plate of this utility model.

[0020] The markings in the attached diagram are as follows: 1. Middle plate; 2. Mounting plate; 3. Terminal; 4. Precision adjustment gap; 5. Carbon brush assembly; 6. Correction plate; 301. Snap-on slot; 501. Capacitor; 502. Inductor; 503. Brush arm; 504. Carbon brush. Detailed Implementation

[0021] This specific embodiment is a brushed motor terminal connection structure with a precision correction structure, and its structural diagram is shown below. Figures 1-5As shown, the assembly includes a middle plate 1, on which two symmetrical mounting plates 2 are provided. Each mounting plate 2 has a terminal 3 press-fitted onto it. The mounting plate 2 has a insertion slot 201 for mounting the terminal 3. By providing the insertion slot 201, the terminal 3 can be aligned with the insertion slot 201 during installation. The pressing method replaces the traditional welding process, forming a mechanical lock between the terminal 3 and the mounting plate 2 on the middle plate 1, improving assembly strength and reducing human error. The pressing method avoids welding stress, improves structural stability, and is conducive to automated assembly.

[0022] The distance between the middle of the two mounting plates 2 on one side is H (e.g., Figure 2 As shown), H = X + 1mm, where X is the distance between the middle of the two mounting plates 2 that are close to each other on one side in the prior art, and X is 15-30mm;

[0023] In the traditional middle plate 1, the X is 23.5mm. In this embodiment, H = 23.5 + 1mm = 24.5mm. The above spacing provides space for the carbon brush 504 to work. In this utility model, H is adjusted from 23.5mm to 24.5mm, which increases the space by 1mm and increases the layout space of the carbon brush 504. This optimizes the layout of the carbon brush 504 and effectively improves the running trajectory of the carbon brush 504, thus extending the motor life by about 1 / 10 (i.e., about 50 hours).

[0024] A carbon brush assembly 5 is also provided on the middle plate 1. In this embodiment, the number of carbon brush assemblies 5 is equal to the number of terminals 3. Each carbon brush assembly 5 is installed and used corresponding to two terminals 3. Each carbon brush assembly 5 includes a capacitor 501 electrically connected to the terminal 3, an inductor 502 electrically connected to the terminal 3, a brush arm 503 electrically connected to the end of the inductor 502 away from the terminal 3, and a carbon brush 504 electrically connected to the end of the brush arm 503 away from the inductor 502. One end of the capacitor 501 is electrically connected to the terminal 3, and the other end of the capacitor 501 is embedded on the outer side of the middle plate 1. In this utility model, the carbon brush assembly 5 is not an improvement point. Therefore, the specific structure and working principle of the carbon brush assembly 5 are existing technologies and will not be described in detail here.

[0025] Terminal 3 is provided with a snap-fit ​​groove 301 for accommodating one end of capacitor 501 and inductor 502. With the snap-fit ​​groove 301 provided, when terminal 3 is pressed against the mounting plate 2 of middle plate 1, one end of capacitor 501 and inductor 502 are located inside the snap-fit ​​groove 301.

[0026] The outer surface of the middle plate 1 is provided with a precision adjustment gap 4 to improve assembly accuracy. The outer surface of the middle plate 1 is provided with multiple sets of correction structures, each set of correction structures is provided with multiple correction plates 6, and the distance between two adjacent correction plates 6 in each set of correction structures is the precision adjustment gap 4. In this application, the precision adjustment gap 4 is increased compared with the adjustment gap in the prior art, which can effectively improve the assembly accuracy, thereby ensuring that the motor maintains consistent accuracy during assembly and use. At the same time, it can suppress resonance and noise problems caused by assembly deviation, effectively reduce resonance and noise, and ensure that the motor performs consistently under different temperature and speed conditions; thus, it helps to improve the consistency and lifespan of the whole machine.

[0027] In summary, this utility model uses a pressing method to replace the traditional welding process, avoiding welding, improving connection strength, and reducing labor costs and assembly complexity; by increasing the spacing, the carbon brush 504 layout is optimized, extending motor life; by increasing the precision adjustment gap 4, assembly precision can be effectively improved, thereby ensuring consistent precision of the motor during assembly and use, while suppressing resonance and noise problems caused by assembly deviations, effectively reducing resonance and noise; and ensuring consistent motor performance under different temperature and speed conditions; thus contributing to improved overall machine consistency and lifespan.

[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A brushed motor terminal connection structure with a precision correction structure, characterized in that: Includes a middle plate (1), on which two symmetrical mounting plates (2) are provided, and each mounting plate (2) is press-fitted with a terminal (3). The distance between the middle of the two mounting plates (2) on one side that are close to each other is H = X + 1 mm, where X is 15-30 mm. The outer surface of the middle plate (1) is provided with a precision adjustment gap (4) to improve assembly accuracy, and a carbon brush assembly (5) is also provided on the middle plate (1).

2. The brushed motor terminal connection structure with a precision correction structure according to claim 1, characterized in that: The carbon brush assembly (5) includes a capacitor (501) electrically connected to the terminal (3), an inductor (502) electrically connected to the terminal (3), a brush arm (503) electrically connected to one end of the inductor (502) away from the terminal (3), and a carbon brush (504) electrically connected to one end of the brush arm (503) away from the inductor (502).

3. The brushed motor terminal connection structure with a precision correction structure according to claim 2, characterized in that: One end of the capacitor (501) is electrically connected to the terminal (3), and the other end of the capacitor (501) is embedded on the outer side of the middle plate (1).

4. The brushed motor terminal connection structure with a precision correction structure according to claim 3, characterized in that: The terminal (3) has a slot (301) for accommodating one end of the capacitor (501) and the inductor (502).

5. The brushed motor terminal connection structure with a precision correction structure according to claim 4, characterized in that: The mounting plate (2) has a socket (201) for mounting terminals (3).

6. The brushed motor terminal connection structure with a precision correction structure according to claim 5, characterized in that: The outer surface of the middle plate (1) is provided with multiple sets of correction structures. Each set of correction structures is provided with multiple correction plates (6), and the distance between two adjacent correction plates (6) in each set of correction structures is the precision adjustment gap (4).

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