Brush motor mechanism
By setting through the ventilation ports and driving the fan blades to rotate in the brushed motor, the problems of overheating and low heat dissipation efficiency of the motor are solved, more efficient heat dissipation and longer service life are achieved, and practicality is enhanced.
Patent Information
- Application Number
- CN202420586747.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-26
AI Technical Summary
Existing brush motors are prone to overheating during long-term use, resulting in a reduced service life and low heat dissipation efficiency, which affects practicality.
A brushed motor mechanism is designed. By setting up eight sets of through-vents at the left end of the motor housing, and driving the fan blade to rotate on the converter, air is sucked into the chamber for heat dissipation. At the same time, dustproof nets are used to prevent dust from entering, enhancing the heat dissipation efficiency. .
It effectively improves the heat dissipation efficiency of brushed motors, extends service life, enhances practicality, and reduces the possibility of dust entering the chamber.
Smart Images
Figure CN222215369U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor accessory devices, in particular to a brushed motor mechanism. Background Art
[0002] As we all know, a brushed motor is a rotating motor that contains a brush device to convert electrical energy into mechanical energy (motor) or mechanical energy into electrical energy (generator). Brushed motors are the basis of all motors. They have the characteristics of fast starting, timely braking, smooth speed regulation in a wide range, and relatively simple control circuits.
[0003] The existing brushed motors are noisy when in use, so they are mostly used for the braking function of electric tools, such as electric grinders, hand drills, angle grinders, etc.
[0004] It has been found in the use of existing brushed motors that brushed motors may overheat when the power tool is used for a long time. Most existing brushed motors dissipate heat naturally, but the natural heat dissipation time is long, which will cause the motor to overheat and reduce the service life of the brushed motor, resulting in poor practicality. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a brushed motor with a heat dissipation function, thereby accelerating the heat dissipation of the brushed motor, thereby increasing the service life of the brushed motor, and thus enhancing the practicality of the brushed motor mechanism.
[0006] The utility model discloses a brushed motor mechanism, comprising a motor housing, a converter and a cover plate, wherein a chamber is arranged inside the motor housing, a card-mounting groove is arranged at the left end of the chamber, a magnetic steel is arranged on the inner wall of the chamber, the converter is slidably card-mounted with the card-mounting groove through a bearing, an iron core and a rotor are arranged in the middle of the converter, a carbon brush is arranged at the right rear end of the chamber, the motor housing is connected to the cover plate through a connecting assembly, the right end of the converter slides through the right end of the cover plate, and also comprises a second dustproof net, fan blades are arranged on the left and right sides of the converter, eight groups of through vents are arranged at the left end of the motor housing, and the left end of the motor housing is connected to the second dustproof net.
[0007] Preferably, the connecting assembly includes four groups of screws, the right end of the cover plate is provided with four groups of mounting through holes, the right end of the motor housing is provided with four groups of mounting threaded holes, and the four groups of screws are respectively threadedly connected with the mounting threaded holes through the mounting through holes.
[0008] Preferably, an anti-collision pad is further included, and the right end of the cover plate is connected to the anti-collision pad.
[0009] Preferably, a U-shaped ventilation slot is provided at the top of the motor housing.
[0010] Preferably, it also includes a first dustproof net, and the inner top end of the magnetic steel is connected to the first dustproof net.
[0011] Preferably, a fixing plate is further included, the lower end of the motor housing is connected to the fixing plate, and the top end of the fixing plate is provided with four groups of fixing through holes.
[0012] Preferably, the four groups of installation through holes and the four groups of fixing through holes are all provided with countersunk holes.
[0013] Preferably, a sealing snap-in groove is provided at the left end of the cover plate, and the left end of the cover plate is snap-fitted to the motor housing through the snap-in groove.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: first, the brushed motor is installed in a suitable position, and then when the brushed motor is working, the coil and the commutator rotate, the magnet and the carbon brush do not rotate, and the alternating change of the coil current direction is completed by the commutator and the brush rotating with the motor, and then the converter drives the two sets of fan blades to rotate, and then the two sets of rotating fan blades will draw air into the chamber through the eight sets of through vents on the left side of the motor casing to dissipate the heat of the motor, and the second dustproof net will prevent dust from entering the chamber, thereby improving the heat dissipation efficiency of the brushed motor, thereby enhancing the service life of the brushed motor, and thus enhancing practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the connection structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the second dustproof net and the motor housing of the utility model;
[0017] Figure 3 It is a schematic diagram of the motor housing and cover plate clamping structure of the utility model;
[0018] Figure 4 It is a schematic diagram of the connection structure between the chamber and the first dustproof net of the utility model;
[0019] Markings in the attached figure: 1. Motor housing; 2. Converter; 3. Iron core and rotor; 4. Carbon brush; 5. Cover plate; 6. Fan blades; 7. Second dustproof net; 8. Screws; 9. Anti-collision pad; 10. First dustproof net; 11. Fixed plate; 30. Chamber; 31. Magnet. DETAILED DESCRIPTION
[0020] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0021] like Figures 1 to 4As shown, the brushed motor mechanism of the utility model includes a motor housing 1, a converter 2 and a cover plate 5. A chamber 30 is arranged inside the motor housing 1, a card slot is arranged at the left end of the chamber 30, a magnetic steel 31 is arranged on the inner wall of the chamber 30, the converter 2 is slidably carded with the card slot through a bearing, an iron core and a rotor 3 are arranged in the middle of the converter 2, a carbon brush 4 is arranged at the right rear end of the chamber 30, the motor housing 1 is connected to the cover plate 5 through a connecting component, the right end of the converter 2 slides out of the right end of the cover plate 5, and also includes a second dustproof net 7, fan blades 6 are arranged on the left and right sides of the converter 2, and the motor housing 1 is provided with a plurality of fan blades 6. Eight groups of through vents are provided at the left end, and the left end of the motor housing 1 is connected to the second dustproof net 7; first, the brush motor is installed in a suitable position, and then when the brush motor is working, the coil and the commutator rotate, the magnet and the carbon brush do not rotate, and the alternating change of the coil current direction is completed by the commutator and the brush that rotate with the motor, and then the converter drives the two groups of fan blades to rotate, and then the two groups of rotating fan blades will draw air into the chamber through the eight groups of through vents on the left side of the motor housing to dissipate the heat of the motor, thereby improving the heat dissipation efficiency of the brush motor, thereby enhancing the service life of the brush motor, and thus enhancing practicality.
[0022] As a preferred embodiment of the above embodiment, the connecting assembly includes four groups of screws 8, four groups of mounting through holes are provided at the right end of the cover plate 5, and four groups of mounting threaded holes are provided at the right end of the motor housing 1. The four groups of screws 8 are threadedly connected with the mounting threaded holes through the mounting through holes respectively; the four groups of screws can be used to conveniently connect the cover plate and the motor housing, thereby facilitating the disassembly of the brushed motor, thereby enhancing practicality.
[0023] As a preference of the above embodiment, an anti-collision pad 9 is further included, and the right end of the cover plate 5 is connected to the anti-collision pad 9, so that the cover plate can be protected by the anti-collision pad, thereby enhancing practicality.
[0024] As a preference of the above embodiment, a U-shaped ventilation groove is provided at the top of the motor housing 1; the U-shaped ventilation groove can enhance the ventilation in the chamber, thereby accelerating the heat dissipation of the brushed motor, thereby enhancing practicality.
[0025] As a preferred embodiment of the above embodiment, a first dustproof net 10 is further included, and the inner top end of the magnetic steel 31 is connected to the first dustproof net 10; the first dustproof net can prevent dust from entering the chamber from the U-shaped vent, thereby enhancing practicality.
[0026] As a preferred embodiment of the above embodiment, a fixing plate 11 is further included, the lower end of the motor housing 1 is connected to the fixing plate 11, and four groups of fixing through holes are arranged on the top of the fixing plate 11; the fixing plate can be used to facilitate the installation of the brushed motor, thereby enhancing practicality.
[0027] As a preference of the above embodiment, the four groups of installation through holes and the four groups of fixing through holes are all provided with countersunk holes; the screws can be hidden by the countersunk holes, thereby enhancing practicality.
[0028] As a preferred embodiment of the above embodiment, a sealed clamping groove is provided at the left end of the cover plate 5, and the left end of the cover plate 5 is clamped with the motor housing 1 through the clamping groove; the sealed clamping groove provided at the left end of the cover plate can facilitate the clamping and fixing of the cover plate and the motor housing, thereby facilitating the fixation of the cover plate and the motor housing, thereby enhancing practicality.
[0029] The brushed motor mechanism of the utility model has the following working principle: when it is working, the brushed motor is first installed in a suitable position through a fixing plate, and then when the brushed motor is working, the coil and the commutator rotate, the magnet and the carbon brush do not rotate, and the alternating change of the coil current direction is completed by the commutator and the brush rotating with the motor, and then the converter drives the two sets of fan blades to rotate, and then the two sets of rotating fan blades will suck air into the chamber through the eight sets of through vents on the left side of the motor casing to dissipate the heat of the motor, and then discharge it through the U-shaped vents, and the two sets of dustproof nets will effectively prevent dust from entering the chamber, thereby improving the heat dissipation efficiency of the brushed motor and increasing its service life.
[0030] The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
[0031] The “first”, “second” and “third” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.
[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A brushed motor mechanism, comprising a motor housing (1), a converter (2) and a cover plate (5), wherein a chamber (30) is arranged inside the motor housing (1), a clamping groove is arranged at the left end of the chamber (30), a magnetic steel (31) is arranged on the inner wall of the chamber (30), the converter (2) is slidably clamped in the clamping groove through a bearing, an iron core and a rotor (3) are arranged in the middle of the converter (2), a carbon brush (4) is arranged at the right rear end of the chamber (30), the motor housing (1) is connected to the cover plate (5) through a connecting assembly, and the right end of the converter (2) slides out of the right end of the cover plate (5); characterized in that It also includes a second dustproof net (7), the left and right sides of the converter (2) are both provided with fan blades (6), the left end of the motor housing (1) is provided with eight groups of through ventilation holes, and the left end of the motor housing (1) is connected to the second dustproof net (7).
2. The brushed motor mechanism according to claim 1, characterized in that: The connection assembly comprises four groups of screws (8), the right end of the cover plate (5) is provided with four groups of mounting through holes, the right end of the motor housing (1) is provided with four groups of mounting threaded holes, and the four groups of screws (8) are respectively threadedly connected with the mounting threaded holes through the mounting through holes.
3. The brushed motor mechanism according to claim 2, characterized in that: It also includes an anti-collision pad (9), and the right end of the cover plate (5) is connected to the anti-collision pad (9).
4. The brushed motor mechanism according to claim 3, characterized in that: A U-shaped ventilation slot is provided at the top of the motor housing (1).
5. The brushed motor mechanism according to claim 4, characterized in that: It also includes a first dustproof net (10), and the inner top end of the magnetic steel (31) is connected to the first dustproof net (10).
6. The brushed motor mechanism according to claim 5, characterized in that: It also comprises a fixing plate (11), the lower end of the motor housing (1) is connected to the fixing plate (11), and the top end of the fixing plate (11) is provided with four groups of fixing through holes.
7. The brushed motor mechanism according to claim 6, characterized in that: The four groups of installation through holes and the four groups of fixing through holes are all provided with countersunk holes.
8. The brushed motor mechanism according to claim 7, characterized in that: A sealing clamping groove is provided at the left end of the cover plate (5), and the left end of the cover plate (5) is clamped with the motor housing (1) through the clamping groove.