CN210380480U

CN210380480U - End cover assembly and direct current motor comprising same

Info

Publication number: CN210380480U
Application number: CN201921404563.1U
Authority: CN
Inventors: 黄红华; 刘峰
Original assignee: Changzhou Delai Motor Co ltd
Current assignee: Changzhou Delai Motor Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-04-21
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses an end cover component and a direct current motor comprising the end cover component, which comprises a rubber cover, a circuit board, a terminal component, a carbon brush and a grounding conductor, wherein a through hole is arranged inside the rubber cover, the circuit board is bonded on one side of the rubber cover facing to a motor shell, the surface of the circuit board is welded with the terminal component, the terminal component comprises two first terminals and two second terminals, the inner wall of the rubber cover is provided with oppositely arranged slotted holes, the first terminals are positioned inside the slotted holes, one end of each first terminal is welded with the circuit board, the other end of each first terminal passes through the rubber cover to be connected with the outside, the inner wall of the rubber cover is also provided with oppositely arranged slots, the second terminals are arranged in the slots, one end of each second terminal is welded with the circuit board, the other end of each second terminal is fixedly connected with the carbon brush, the carbon brush, the other end is connected with the motor shell in an abutting mode. The utility model discloses the life of circuit board is higher, simple to operate's effect.

Description

End cover assembly and direct current motor comprising same

Technical Field

The utility model belongs to the technical field of motor element's technique and specifically relates to a direct current motor who relates to an end cover subassembly reaches including this end cover subassembly.

Background

The dc motor is a rotating electrical machine that can convert dc electrical energy into mechanical energy (dc motor) or convert mechanical energy into dc electrical energy (dc generator), and is a motor that can convert dc electrical energy and mechanical energy into each other. When the motor is used as a motor, the motor is a direct current motor and converts electric energy into mechanical energy; when the generator is operated, the generator is a direct current generator and converts mechanical energy into electric energy.

Prior art's motor end cover is when the design, and in order to make things convenient for being connected between terminal and the circuit board, can fix the circuit board in the outside of gluing the lid to with the terminal welding on the circuit board, cover fluting and link to each other with motor housing through the iron wire and carry out ground connection, the circuit board receives the impact of external force to take place to warp or the fracture causes motor fault outside easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an end cover subassembly reaches DC motor including this end cover subassembly, it has places the circuit board in end cover subassembly's inside, improves the life's of circuit board effect.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an end cover assembly comprises a rubber cover, a circuit board, a terminal assembly, a carbon brush and a grounding wire, wherein the rubber cover is riveted on a motor shell, a through hole is formed in the rubber cover, the circuit board is bonded on one side, facing the motor shell, of the rubber cover, the surface of the circuit board is welded with the terminal assembly, the terminal assembly comprises two first terminals and two second terminals, slotted holes which are oppositely formed are formed in the inner wall of the rubber cover, the first terminals are located in the slotted holes, one ends of the first terminals are welded with the circuit board, the other ends of the first terminals penetrate through the rubber cover to be connected with the outside, slots which are oppositely formed are further formed in the inner wall of the rubber cover, the second terminals are placed in the slots, one ends of the second terminals are welded with the circuit board, the other ends of the second terminals are fixedly connected with the carbon brush, and the carbon, the outer wall of the rubber cover is provided with a grounding conductor oppositely, one end of the grounding conductor is fixedly connected with the circuit board, and the other end of the grounding conductor is abutted to the motor shell.

By adopting the technical scheme, the circuit board is arranged on one side, facing the motor shell, of the rubber cover, so that the safety performance of the circuit board is improved, and the circuit board is prevented from being easily broken and equipment faults are avoided when the motor is directly impacted by external force; the circuit board is located and need carry out the terminal after inside and adjust, and first terminal runs through the rubber cover and is connected with external power supply, provides the power for the rotor subassembly, second terminal one end and circuit board fixed connection, and the other end and carbon brush fixed connection will pass through the electric current transport of circuit board to the carbon brush through the second terminal and provide the electric energy for the rotor, and the interference killing feature in magnetic field can be improved to the circuit board.

Furthermore, one side of the rubber cover, which is far away from the motor shell, is provided with heat dissipation holes, the heat dissipation holes are positioned on two sides of the through hole, and the cross section of each heat dissipation hole is arc-shaped.

Through adopting above-mentioned technical scheme, the louvre that the rubber cover surface set up improves the radiating efficiency of motor in work.

Furthermore, a bearing is fixedly connected inside the through hole.

Through adopting above-mentioned technical scheme, the bearing has improved the stability of rotor, avoids the rotor position to take place the skew when rotating.

Further, the carbon brush includes brush yoke and carbon essence, the brush yoke with second terminal fixed connection, the brush yoke is kept away from the both sides fixed connection of the one end of second terminal the carbon essence, the carbon essence is kept away from one side of brush yoke is circular-arc.

Through adopting above-mentioned technical scheme, the brush yoke plays the supporting role, and the carbon essence is a good sliding contact spare, passes through the carbon essence with outside electric current and transmits to the rotor on to the realization rotates.

Furthermore, one side of the brush holder, which is close to the second terminal, is also provided with a damping strip.

By adopting the technical scheme, when the load of the motor changes, the voltage and the current inside the motor can form an oscillating process, and the damping strip can play a role in effectively relieving the oscillating process, so that the service life of the equipment is prolonged.

Furthermore, two retaining strips are arranged on the surface of the second terminal.

Through adopting above-mentioned technical scheme, the stability of being connected between second terminal and the slot has been improved to the stopping strip.

Furthermore, the inside heat dissipation silica gel that still is provided with of rubber cover the circuit board butt.

Through adopting above-mentioned technical scheme, heat that heat dissipation silica gel can effectual alleviating circuit board surface production, improves heat dissipation silica gel's life.

Furthermore, the grounding wire is made of conductive cotton.

By adopting the technical scheme, the conductive cotton has good conductivity, stable structure, light material and easy installation.

The utility model provides an adopt direct current motor of end cover subassembly for direct current motor, it has motor housing to glue the lid riveting, the inside rotor that is provided with of motor housing, the rotor runs through motor housing and gluey lid, glue the capping surface and seted up the draw-in groove, motor housing is close to the one end of gluing the lid is provided with the buckle, draw-in groove and buckle looks joint.

Through adopting above-mentioned technical scheme, the buckle draw-in groove is connected stably, and motor inner structure is simple, and the end cover subassembly surface is smooth, and it is more convenient to install and use, and work efficiency is higher.

To sum up, the beneficial effects of the utility model are that:

1. the technology of the end cover assembly with the circuit board positioned at the inner side is adopted, so that the service life of the circuit board can be prolonged, and the effect of convenient installation is achieved;

2. the technology of the carbon brush with the damping strips arranged on the surface is adopted, so that the effect of long service life can be achieved;

3. the technology of the grounding wire of the conductive cotton is adopted, so that the effects of convenient installation and easy installation can be achieved.

Drawings

Fig. 1 is a schematic overall structure diagram of the first embodiment.

Fig. 2 is a schematic diagram of an explosive structure according to the first embodiment.

Fig. 3 is a schematic view of the overall structure of the second embodiment.

In the figure, 1, a rubber cover; 11. a through hole; 12. a slot; 13. a slot; 14. heat dissipation holes; 15. a card slot; 2. a circuit board; 3. a terminal assembly; 31. a first terminal; 32. a second terminal; 321. a backstop strip; 4. a carbon brush; 41. a brush holder; 42. carbon essence; 43. a damping strip; 5. conductive cotton; 6. a motor housing; 61. buckling; 7. a bearing; 8. and a rotor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: referring to fig. 1 and 2, an end cap assembly disclosed in this embodiment includes a rubber cap 1, a circuit board 2, a terminal assembly 3, a carbon brush 4, and a ground wire. The rubber cover 1 is in a cylindrical shape with an opening at one end, one side of the opening of the rubber cover 1 is bonded with the circuit board 2, the circuit board 2 has good anti-magnetic field interference capability, and transmission current is more stable. The terminal assembly 3 is fixedly connected inside the rubber cover 1, the grounding wire is fixedly connected to the side face of the rubber cover 1, and the output end of the terminal assembly 3 is fixedly connected with the carbon brush 4. Through-hole 11 has been seted up at the middle part on the terminal surface of keeping away from the one end of circuit board 2 of gluey lid 1, fixedly connected with bearing 7 in the through-hole 11, and bearing 7 improves the stability of being connected of rotor 8 and gluey lid 1. The two sides of the through hole 11 are provided with heat dissipation holes 14 which are oppositely arranged and have circular arc-shaped cross sections, and the heat dissipation holes 14 can timely discharge heat generated by the motor.

Referring to fig. 2, the terminal assembly 3 includes two first terminals 31 and two second terminals 32, the two first terminals 31 are disposed oppositely, the rubber cover 1 is provided with a through slot 12 for mounting the first terminals 31, one end of the first terminal 31 dares to be connected to the circuit board 2, and the other end passes through the slot 12 to be connected with the outside; two second terminals 32 set up relatively, have seted up slot 13 on the jiao gai 1 and be used for installing second terminal 32, and the surface of second terminal 32 is provided with two stopping strip 321, improves the stability between second terminal 32 and the slot 13, and the one end and the circuit board 2 welding of second terminal 32, the other end and carbon brush 4 fixed connection.

Referring to fig. 2, the carbon brush 4 includes a brush holder 41 and a carbon 42, one end of the brush holder 41 is fixedly connected to the end of the second terminal 32, the other end of the brush holder is fixedly connected to the carbon 42, a damping bar 43 is disposed on a side surface of the brush holder 41, and the damping bar 43 can effectively alleviate the vibration generated by the motor load; the side of the carbon 42 away from the brush holder 41 is arc-shaped, and the arc-shaped carbon 42 can not only transmit the external current to the rotor 8, but also has lower friction with the rotor 8, thereby improving the working efficiency of the motor.

Referring to fig. 2, the heat dissipation silica gel fixedly connected with the circuit board 2 is arranged in the rubber cover 1, and the heat dissipation efficiency of the circuit board 2 is further improved by the heat dissipation silica gel; ground wire adopts electrically conductive cotton 5 in this embodiment, compares with traditional wire, and electrically conductive cotton 5's area of contact is great, connects conveniently, and the texture is lighter, is difficult to the fracture, and life is higher.

The implementation principle of the above embodiment is as follows:

the positive and negative poles of the external power supply are respectively electrically connected with the two first terminals 31, the current enters the circuit board 2 through the first terminals 31, the current is transmitted to the carbon brush 4 through the second terminals 32, and then the current enters the rotor 8 through the carbon brush 4 to drive the rotor 8 to rotate, so that the electric energy is converted into mechanical energy.

Example 2: the utility model provides an install direct current motor of end cover subassembly among embodiment 1, as shown in fig. 3, it includes rubber cover 1, motor housing 6 and rotor 8, and draw-in groove 15 has been seted up on rubber cover 1 surface, is provided with buckle 61 with draw-in groove 15 matched with on the motor housing 6, and rubber cover 1 riveting is further strengthened through buckle 61 and draw-in groove 15 after on motor housing 6, and motor housing 6 is inside to have the rotor 8 that runs through motor housing 6 and rubber cover 1.

The device simple structure, external equipment is less, and it is more convenient to install and use, and work efficiency is higher.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides an end cover subassembly, includes rubber cover (1), circuit board (2), terminal subassembly (3), carbon brush (4) and earth conductor, rubber cover (1) riveting is on motor housing (6), its characterized in that: the through hole (11) is formed in the rubber cover (1), the circuit board (2) is bonded on one side of the rubber cover (1) facing to the motor shell (6), the surface of the circuit board (2) is welded with the terminal assembly (3), the terminal assembly (3) comprises two first terminals (31) and two second terminals (32), the inner wall of the rubber cover (1) is provided with oppositely arranged slotted holes (12), the first terminals (31) are positioned in the slotted holes (12), one ends of the first terminals (31) are welded with the circuit board (2), the other ends of the first terminals penetrate through the rubber cover (1) to be connected with the outside, the inner wall of the rubber cover (1) is further provided with oppositely arranged slots (13), the second terminals (32) are placed in the slots (13), one ends of the second terminals (32) are welded with the circuit board (2), the other end of the carbon brush is fixedly connected with the carbon brush (4), the carbon brush (4) is located inside the rubber cover (1), the outer wall of the rubber cover (1) is provided with a grounding wire relatively, one end of the grounding wire is fixedly connected with the circuit board (2), and the other end of the grounding wire is abutted to the motor shell (6).

2. An end cap assembly according to claim 1, wherein: one side of the rubber cover (1) far away from the motor shell (6) is provided with heat dissipation holes (14), the heat dissipation holes (14) are located on two sides of the through hole (11), and the cross section of each heat dissipation hole (14) is arc-shaped.

3. An end cap assembly according to claim 1, wherein: and a bearing (7) is fixedly connected inside the through hole (11).

4. An end cap assembly according to claim 1, wherein: the carbon brush (4) comprises a brush holder (41) and carbon powder (42), the brush holder (41) is fixedly connected with the second terminal (32), the brush holder (41) is far away from two sides of one end of the second terminal (32) and fixedly connected with the carbon powder (42), and one side, far away from the brush holder (41), of the carbon powder (42) is arc-shaped.

5. An end cap assembly according to claim 4, wherein: and a damping strip (43) is further arranged on one side, close to the second terminal (32), of the brush holder (41).

6. An end cap assembly according to claim 1, wherein: two retaining strips (321) are arranged on the surface of the second terminal (32).

7. An end cap assembly according to claim 1, wherein: the rubber cover (1) is also internally provided with heat dissipation silica gel which is abutted to the circuit board (2).

8. An end cap assembly according to claim 1, wherein: the grounding wire adopts conductive cotton (5).

9. A direct current motor employing the end cap assembly of claim 1, wherein: the motor cover is characterized in that the rubber cover (1) is riveted with the motor shell (6), a rotor (8) is arranged inside the motor shell (6), the rotor (8) penetrates through the motor shell (6) and the rubber cover (1), a clamping groove (15) is formed in the surface of the rubber cover (1), the motor shell (6) is close to one end of the rubber cover (1) and is provided with a buckle (61), and the clamping groove (15) is clamped with the buckle (61) in a clamping mode.