Brush DC motor

Abstract

The utility model discloses a brush DC motor, and belongs to the field of motors. A brush direct current motor comprises a motor, a transmission rod and a vibration reduction mechanism are installed on the front face of the motor, the vibration reduction mechanism comprises rubber blocks fixedly connected to the four corners of the motor, the number of the rubber blocks is eight, the rubber blocks are evenly distributed on the front side and the rear side of the four corners of the motor, the rubber blocks have elasticity and vibration reduction capacity, and connecting plates are fixedly connected to the outer sides of the rubber blocks. Elastic plates are movably connected to the front side and the rear side of the outer side of the connecting plate, the elastic plates continuously extrude the connecting plate towards the inner side, and supporting plates are fixedly connected to the outer sides of the elastic plates; when the motor is used, under the action of the vibration reduction mechanism, the fixing mechanism, the linkage mechanism, the heat dissipation mechanism and the protection assembly, the heat dissipation capability of the motor in the operation process can be improved, the motor is more stable, and the problems of large vibration amplitude and insufficient heat dissipation capability caused by high-power operation of the existing motor in a hot environment are solved; and the device has the advantage of being convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a brushed DC motor. Background Technology

[0002] A brushed DC motor is an electric motor containing brushes that can convert DC electrical energy into mechanical energy (in a DC motor) or mechanical energy into DC electrical energy (in a DC generator).

[0003] For example, Chinese Patent Application No. 201720109871.6 discloses a brushed DC motor, including a housing, stator, rotor, commutator, carbon brushes, inductor, capacitor, and end cover. The stator and rotor are both installed inside the housing, with the stator located between the housing and the rotor. The rotor has a shaft, and the commutator is installed at one end of the shaft, with the shaft passing through the commutator. The end cover is installed at one end of the housing and connected to one end of the shaft passing through the commutator; the other end of the shaft is rotatably installed at the other end of the housing. The carbon brushes are installed on the end cover and connected to the commutator, and each carbon brush also has terminals. One end of the inductor is installed inside the end cover and connected to the terminals via a capacitor; the other end of the inductor is connected to the carbon brushes. This invention can effectively eliminate sparks caused by the commutator and can resist interference from external magnetic fields, improving the reliability of electromagnetic radiation signals.

[0004] In daily use, brushed DC motors need to operate at high power for extended periods in hot environments. This can easily lead to insufficient heat dissipation and excessive vibration, resulting in a shortened lifespan, increased noise, and potentially loosening or even detachment of fixed components.

[0005] Therefore, it is necessary to redesign and modify the brushed DC motor to effectively prevent insufficient heat dissipation and excessive vibration. Utility Model Content

[0006] The purpose of this invention is to solve the problems of insufficient heat dissipation and large vibration in the existing technology, and to propose a brushed DC motor.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A brushed DC motor includes a motor, wherein a drive rod is mounted on the front side of the motor.

[0009] The vibration damping mechanism includes eight rubber blocks fixedly connected to the four corners of the motor, evenly distributed on the front and rear sides of the four corners. The rubber blocks are elastic and have vibration damping capabilities. A connecting plate is fixedly connected to the outer side of each rubber block. Spring plates are movably connected to the front and rear sides of the outer side of the connecting plate. The spring plates continuously press the connecting plate inward. A support plate is fixedly connected to the outer side of the spring plates. Support rods are fixedly connected to the front and rear sides of the inner side of the support plate. The inner side of the support rods penetrates the inner side of the connecting plate and extends into the interior of the rubber blocks. The surface of the support rods is slidably connected to the inner wall of the rubber blocks. A fixing mechanism is provided around the motor.

[0010] As a preferred technical solution of this application, the fixing mechanism includes a rubber pad fixedly connected to the outside of the support plate. The rubber pad has elasticity and vibration damping capability. A fixing frame is fixedly connected to the outside of the rubber pad. Bolts are provided around the fixing frame. Multiple bolts are evenly installed inside the fixing frame. The fixing frame can be installed on the surface of the device or equipment by bolts. A linkage mechanism is provided on the front of the motor.

[0011] As a preferred technical solution of this application, the linkage mechanism includes a drive gear fixedly connected to the surface of the transmission rod, and transmission gears meshing on all four sides of the drive gear. The inner walls of the transmission gears are movably connected to fixed rods through bearings. The rear side of the bottom of the fixed rod is fixedly connected to the surface of the motor, and a mounting plate is fixedly connected to the front side of the bottom of the fixed rod. The inner wall of the mounting plate is movably connected to the surface of the transmission rod through bearings. A heat dissipation mechanism is provided around the motor.

[0012] As a preferred technical solution of this application, the heat dissipation mechanism includes multiple heat-conducting plates fixedly connected around the motor. The heat-conducting plates are made of copper. Multiple arc-shaped plates are fixedly connected to the back of each transmission gear. A cooling fan is fixedly connected to the back of each arc-shaped plate. The inner wall of the cooling fan is movably connected to the surface of the fixed rod through a bearing. The linkage mechanism can actuate the rotational kinetic energy of the motor to drive the cooling fan to rotate. A protective component is provided on the front of the motor.

[0013] As a preferred technical solution of this application, the protective component includes a protective plate disposed on the outside of the cooling fan. The inner side of the protective plate is fixedly connected to the four sides of the mounting plate. Connecting rods are provided at the four corners of the mounting plate. There are multiple connecting rods, which are fixedly connected to the surface of the protective plate to increase the stability of the protective plate. Multiple ventilation slots are provided on the front and outer sides of the protective plate to increase the heat dissipation capacity of the heat dissipation mechanism while shielding it to prevent the cooling fan from scratching the operator.

[0014] As a preferred technical solution of this application, the mounting plate is fixedly connected to four sides with reinforcing plates, and the rear side of the bottom of the reinforcing plates is fixedly connected to the surface of the motor.

[0015] As a preferred technical solution of this application, a plurality of limiting rods are fixedly connected to the inner side of the fixing frame. The inner side of the limiting rods penetrates the inner side of the support plate and is slidably connected to its inner wall, thereby limiting the support position of the support plate and stabilizing the extrusion direction of the spring plate.

[0016] As a preferred technical solution of this application, a fixing ring is fixedly connected to both the front and back of the drive gear, and the inner wall of the fixing ring is fixedly connected to the surface of the transmission rod, thereby stabilizing the kinetic energy transmission between the transmission rod and the drive gear.

[0017] As a preferred technical solution of this application, the fixing frame is provided with multiple grooves around its perimeter. These grooves can reduce its manufacturing cost and weight without affecting the stable fixing of the fixing frame.

[0018] As a preferred technical solution of this application, the motor and the mounting plate are both fixedly connected to a fixing ring around their perimeter, and the inner wall of the fixing ring is fixedly connected to the surface of the fixing rod, thereby increasing the transmission stability of the linkage mechanism.

[0019] Compared with the prior art, the present invention provides a brushed DC motor with the following advantages:

[0020] 1. This brushed DC motor, under the action of vibration damping mechanism, fixing mechanism, linkage mechanism, heat dissipation mechanism and protective components, can increase the heat dissipation capacity during motor operation and make it more stable. It avoids the large vibration amplitude and insufficient heat dissipation capacity caused by the high power operation of existing motors in hot environments, and makes it easy to use.

[0021] 2. This brushed DC motor, through the cooperation of bolts and a mounting bracket, achieves stable installation in any position. Meanwhile, the design of the limit rod and rubber pads enhances the stability and vibration damping capability of the mounting mechanism.

[0022] 3. This brushed DC motor effectively dissipates heat by using the motor's rotational kinetic energy to drive the cooling fan. Simultaneously, the meshing of the drive gear and transmission gear ensures the stability and reliability of kinetic energy transmission.

[0023] 4. This brushed DC motor, through the cooperation of a heat-conducting plate and a cooling fan, effectively reduces the motor temperature and improves the motor's operating efficiency and stability. At the same time, the rotation of the cooling fan increases airflow, further enhancing the heat dissipation effect.

[0024] 5. This brushed DC motor, through the cooperation of the protective plate and connecting rod, effectively prevents the cooling fan from scratching operators. At the same time, the ventilation slot design increases the heat dissipation capacity of the cooling mechanism, improving the overall safety of the motor.

[0025] 6. This brushed DC motor, by setting a reinforcing plate, more firmly connects the mounting plate and the motor together, improving the stability and reliability of the entire structure.

[0026] 7. The brushed DC motor, by setting a limit rod, ensures the stability of the support position of the support plate and the extrusion direction of the spring plate, thereby improving the working effect of the vibration damping mechanism.

[0027] 8. This brushed DC motor, by setting a fixed ring, stabilizes the kinetic energy transmission between the transmission rod and the drive gear, reduces energy loss, and improves the transmission efficiency of the equipment.

[0028] 9. This brushed DC motor, by setting grooves on the mounting bracket, not only reduces manufacturing costs and weight, but also ensures the stability and fixing effect of the mounting bracket.

[0029] 10. This brushed DC motor, by setting a retaining ring, connects the motor and mounting plate to the retaining rod more tightly, further enhancing the transmission stability of the linkage mechanism. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a side view of the structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the vibration reduction mechanism of this utility model;

[0033] Figure 4 This is a schematic diagram of the fixing mechanism of this utility model;

[0034] Figure 5 This is a schematic diagram of the heat dissipation mechanism of this utility model;

[0035] Figure 6 This is a schematic diagram of the linkage mechanism of this utility model.

[0036] In the diagram: 1. Motor; 2. Transmission rod; 3. Rubber block; 4. Connecting plate; 5. Spring plate; 6. Support plate; 7. Support rod; 8. Rubber pad; 9. Fixing bracket; 10. Bolt; 11. Drive gear; 12. Transmission gear; 13. Fixing rod; 14. Mounting plate; 15. Heat-conducting plate; 16. Arc plate; 17. Cooling fan; 18. Protective plate; 19. Connecting rod; 20. Ventilation slot; 21. Reinforcing plate; 22. Limiting rod; 23. Fixing ring; 24. Groove; 25. Fixing ring. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0038] Example 1:

[0039] Reference Figure 1-6A brushed DC motor includes a motor 1, a transmission rod 2 mounted on the front of the motor 1, and a vibration damping mechanism. The vibration damping mechanism includes eight rubber blocks 3 fixedly connected to the four corners of the motor 1, evenly distributed on the front and rear sides of the four corners. The rubber blocks 3 are elastic and have vibration damping capabilities. A connecting plate 4 is fixedly connected to the outer side of the rubber blocks 3. Spring plates 5 are movably connected to the front and rear sides of the outer side of the connecting plate 4. The spring plates 5 continuously press the connecting plate 4 inward. A support plate 6 is fixedly connected to the outer side of the spring plates 5. Support rods 7 are fixedly connected to the front and rear sides of the inner side of the support plate 6. The inner side of the support rods 7 penetrates the inner side of the connecting plate 4 and extends into the interior of the rubber blocks 3. The surface of the support rods 7 is slidably connected to the inner wall of the rubber blocks 3. A fixing mechanism is provided around the motor 1 to fix... The mechanism includes a rubber pad 8 fixedly connected to the outside of the support plate 6. The rubber pad 8 has elasticity and vibration damping capability. A fixing frame 9 is fixedly connected to the outside of the rubber pad 8. Bolts 10 are provided around the four sides of the fixing frame 9. Multiple bolts 10 are evenly installed inside the fixing frame 9. The fixing frame 9 can be installed on the surface of the device or equipment by means of the bolts 10. A linkage mechanism is provided on the front of the motor 1. The linkage mechanism includes a drive gear 11 fixedly connected to the surface of the transmission rod 2. Transmission gears 12 are meshed on all four sides of the drive gear 11. The inner walls of the transmission gears 12 are movably connected to the fixing rods 13 through bearings. The rear side of the bottom of the fixing rod 13 is fixedly connected to the surface of the motor 1. The front side of the bottom of the fixing rod 13 is fixedly connected to the mounting plate 14. The inner wall of the mounting plate 14 The motor 1 is movably connected to the transmission rod 2 via bearings. A heat dissipation mechanism is provided around the motor 1, including multiple heat-conducting plates 15 fixedly connected around the motor 1. The heat-conducting plates 15 are made of copper. Multiple arc-shaped plates 16 are fixedly connected to the back of each transmission gear 12. A cooling fan 17 is fixedly connected to the back of each arc-shaped plate 16. The inner wall of the cooling fan 17 is movably connected to the surface of the fixed rod 13 via bearings. The linkage mechanism can actuate the rotational kinetic energy of the motor 1 to drive the cooling fan 17 to rotate. A protective assembly is provided on the front of the motor 1, including a protective plate 18 located outside the cooling fan 17. The inner side of the protective plate 18 is fixedly connected to the four sides of the mounting plate 14. Connecting rods 19 are provided at the four corners of the mounting plate 14. Multiple connecting rods 19 are provided. Furthermore, it is fixedly connected to the surface of the protective plate 18 to increase the stability of the protective plate 18. Multiple ventilation slots 20 are provided on the front and outer sides of the protective plate 18 to increase the heat dissipation capacity of the heat dissipation mechanism while shielding it to prevent the cooling fan 17 from scratching the operator. Reinforcing plates 21 are fixedly connected to all four sides of the mounting plate 14. The rear side of the bottom of the reinforcing plate 21 is fixedly connected to the surface of the motor 1. Multiple limiting rods 22 are fixedly connected to the inner side of the fixing frame 9. The inner side of the limiting rod 22 penetrates the inner side of the support plate 6 and slides with its inner wall to limit the support position of the support plate 6 and stabilize the pressing direction of the spring plate 5. Fixing rings 23 are fixedly connected to the front and back of the drive gear 11. The inner wall of the fixing ring 23 is fixedly connected to the surface of the transmission rod 2.To stabilize the kinetic energy transmission between the transmission rod 2 and the drive gear 11, multiple grooves 24 are provided around the perimeter of the fixing frame 9. These grooves 24 reduce manufacturing costs and weight without affecting the stability of the fixing frame 9. Fixing rings 25 are fixedly connected to the perimeter of both the motor 1 and the mounting plate 14. The inner wall of the fixing ring 25 is fixedly connected to the surface of the fixing rod 13, thereby increasing the transmission stability of the linkage mechanism.

[0040] Specifically, during operation / use of the brushed DC motor: When the brushed DC motor 1 is working, the drive of the motor 1 causes the transmission rod 2 to rotate. The drive gear 11 on the surface of the transmission rod 2 rotates accordingly. Since the drive gear 11 meshes with the four transmission gears 12, the transmission gears 12 also begin to rotate. These transmission gears 12 are movably connected to the fixed rod 13 via bearings, and the fixed rod 13 is fixed to the motor 1 and the mounting plate 14. As the transmission gears 12 rotate, the arc-shaped plate 16 on their backs drives the cooling fan 17 to rotate, thereby realizing the function of heat dissipation using the rotational kinetic energy of the motor 1 (the cooling plate increases the heat conduction area on the surface of the motor 1). At the same time, the motor 1 will generate vibrations during operation, and these vibrations are mitigated by the vibration damping mechanism. Specifically, the rubber blocks 3 at the four corners of the motor 1 have elasticity and vibration damping capabilities, and can absorb some of the vibration energy. The connecting plate 4 and the spring plate 5 on the outside of the rubber blocks 3 further disperse and mitigate the vibrations. The spring plate 5 continuously presses the connecting plate 4 inward, making the entire vibration damping mechanism more stable. Furthermore, the structure of the support plate 6 and support rod 7 also serves to support and stabilize the vibration damping mechanism. For fixing, the fixing mechanism uses bolts 10 to install the fixing frame 9 onto the required device or equipment, while the limiting rod 22 on the inner side of the fixing frame 9 restricts the support position of the support plate 6, further stabilizing the entire structure of the motor 1. Simultaneously, the elasticity and vibration damping capacity of the rubber pad 8 enhance the stability of the fixing mechanism. The protective component is located on the outside of the cooling fan 17, and the connecting rod 19 increases the stability of the protective plate 18, preventing the cooling fan 17 from scratching the operator. At the same time, the ventilation slots 20 on the protective plate 18 also increase the heat dissipation capacity of the cooling mechanism. This avoids the large vibration amplitude and insufficient heat dissipation capacity caused by the existing motor 1 operating at high power in hot environments, giving it the advantage of ease of use.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A brushed DC motor, comprising a motor (1), wherein a transmission rod (2) is mounted on the front side of the motor (1), characterized in that: The vibration damping mechanism includes rubber blocks (3) fixedly connected to the four corners of the motor (1). There are eight rubber blocks (3) evenly distributed on the front and rear sides of the four corners of the motor (1). The rubber blocks (3) have elasticity and vibration damping ability. A connecting plate (4) is fixedly connected to the outer side of the rubber block (3). A spring plate (5) is movably connected to the front and rear sides of the outer side of the connecting plate (4). The spring plate (5) continuously presses the connecting plate (4) inward. A support plate (6) is fixedly connected to the outer side of the spring plate (5). A support rod (7) is fixedly connected to the front and rear sides of the inner side of the support plate (6). The inner side of the support rod (7) penetrates the inner side of the connecting plate (4) and extends into the interior of the rubber block (3). The surface of the support rod (7) is slidably connected to the inner wall of the rubber block (3). A fixing mechanism is provided around the motor (1).

2. The brushed DC motor according to claim 1, characterized in that: The fixing mechanism includes a rubber pad (8) fixedly connected to the outside of the support plate (6). The rubber pad (8) has elasticity and vibration damping capability. A fixing frame (9) is fixedly connected to the outside of the rubber pad (8). Bolts (10) are provided around the fixing frame (9). Multiple bolts (10) are evenly installed inside the fixing frame (9). The fixing frame (9) can be installed on the surface of the device or equipment by means of bolts (10). A linkage mechanism is provided on the front of the motor (1).

3. A brushed DC motor according to claim 2, characterized in that: The linkage mechanism includes a drive gear (11) fixedly connected to the surface of the transmission rod (2). The four sides of the drive gear (11) are meshed with transmission gears (12). The inner walls of the transmission gears (12) are movably connected to fixed rods (13) through bearings. The rear side of the bottom of the fixed rod (13) is fixedly connected to the surface of the motor (1). The front side of the bottom of the fixed rod (13) is fixedly connected to a mounting plate (14). The inner wall of the mounting plate (14) is movably connected to the surface of the transmission rod (2) through bearings. A heat dissipation mechanism is provided around the motor (1).

4. A brushed DC motor according to claim 3, characterized in that: The heat dissipation mechanism includes multiple heat-conducting plates (15) fixedly connected around the motor (1). The heat-conducting plates (15) are made of copper. Multiple arc-shaped plates (16) are fixedly connected to the back of the transmission gear (12). A cooling fan (17) is fixedly connected to the back of the arc-shaped plate (16). The inner wall of the cooling fan (17) is movably connected to the surface of the fixed rod (13) through a bearing. The linkage mechanism can drive the cooling fan (17) to rotate by the rotational kinetic energy of the motor (1). A protective component is provided on the front of the motor (1).

5. A brushed DC motor according to claim 4, characterized in that: The protective assembly includes a protective plate (18) disposed on the outside of the cooling fan (17). The inner side of the protective plate (18) is fixedly connected to the four sides of the mounting plate (14). The four corners of the mounting plate (14) are provided with connecting rods (19). There are multiple connecting rods (19) and they are fixedly connected to the surface of the protective plate (18) to increase the stability of the protective plate (18). Multiple ventilation slots (20) are provided on the front and outer sides of the protective plate (18) to increase the heat dissipation capacity of the heat dissipation mechanism while shielding it to prevent the cooling fan (17) from scratching the operator.

6. A brushed DC motor according to claim 3, characterized in that: The mounting plate (14) is fixedly connected to four sides with reinforcing plates (21), and the rear side of the bottom of the reinforcing plates (21) is fixedly connected to the surface of the motor (1).

7. A brushed DC motor according to claim 2, characterized in that: The inner side of the fixed frame (9) is fixedly connected with multiple limiting rods (22). The inner side of the limiting rods (22) penetrates the inner side of the support plate (6) and is slidably connected to its inner wall, thereby limiting the support position of the support plate (6) and stabilizing the extrusion direction of the spring plate (5).

8. A brushed DC motor according to claim 3, characterized in that: The front and back sides of the drive gear (11) are fixedly connected with a fixing ring (23), and the inner wall of the fixing ring (23) is fixedly connected to the surface of the transmission rod (2) to stabilize the kinetic energy transmission between the transmission rod (2) and the drive gear (11).

9. A brushed DC motor according to claim 2, characterized in that: The fixing frame (9) has multiple grooves (24) around its perimeter. The grooves (24) can reduce its manufacturing cost and weight without affecting the stable fixing of the fixing frame (9).

10. A brushed DC motor according to claim 3, characterized in that: The motor (1) and the mounting plate (14) are both fixedly connected to a fixing ring (25) around their perimeter. The inner wall of the fixing ring (25) is fixedly connected to the surface of the fixing rod (13) to increase the transmission stability of the linkage mechanism.

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