CN220754530U - Motor sound insulation end cover - Google Patents

Abstract

The application relates to a motor sound insulation end cover belongs to auto-parts technical field. The novel electric brush comprises an end cover body, wherein an installation cavity for installing an electric brush assembly is formed in the end cover body, two electric brush assemblies are arranged, a shaft hole through which a motor shaft penetrates is formed in the center of the end cover body, the electric brush assembly rotates 180 degrees around the shaft hole, the electric brush assembly comprises carbon brushes, sound insulation plates are arranged in the installation cavity, the sound insulation plates are arranged in two, and the carbon brushes and the sound insulation plates are arranged around the shaft hole at uniform intervals. This application produces the less effect of noise when having motor operation.

Description

Motor sound insulation end cover

Technical Field

The application relates to the field of automobile accessories, in particular to a motor sound insulation end cover.

Background

The gear motor is added with a matched gear reduction box on the basis of a common motor, and can be used as a driving piece to drive a part to move, so that the automatic window lifting function of an automobile is realized.

The gear motor comprises a common motor and a gear reduction box, the common motor generally comprises a rotor, a stator and a motor end cover, one end of the motor end cover is connected with the common motor, the other end of the motor end cover is connected with the gear reduction box, the rotor comprises a motor shaft and a slip ring, the slip ring is arranged at one end of the motor shaft, the motor end cover is provided with a mounting cavity for mounting a power supply brush assembly, the center of the motor end cover is provided with a shaft hole for a power supply shaft to pass through, the two power supply brush assemblies are provided with two power supply brush assemblies, the two power supply brush assemblies are respectively connected with an input wire and an output wire, the power supply brush assemblies comprise carbon brushes, the carbon brushes are arranged in a mode of rotating 180 degrees around the shaft hole, the rotor is mounted on the motor end cover, the motor shaft passes through the shaft hole of the motor end cover, the slip ring contacts with the two carbon brushes, and the motor end cover is used for mounting the power supply brush assemblies and fixing the output end of the rotor shaft.

In the motor end cover of the related art, the rotor of the motor drives the slip ring to rotate and rub with the carbon brush to generate noise in the rotating process, and the noise is larger due to the simple internal structure.

Disclosure of Invention

In order to reduce the influence of noise in the motor end cover on the outside, the application provides a motor sound insulation end cover.

The application provides a motor sound insulation end cover adopts following technical scheme:

the utility model provides a motor sound insulation end cover, includes the end cover body, the installation cavity that supplies brush subassembly to install has been seted up to the end cover body, the brush subassembly is provided with two, the shaft hole that the motor shaft was worn out has been seted up at the end cover body center, the brush subassembly is around the rotatory 180 degrees settings in shaft hole, the brush subassembly contains the carbon brush, be provided with the acoustic celotex board in the installation cavity, the acoustic celotex board is provided with two, the carbon brush with the acoustic celotex board is around the even interval in shaft hole sets up.

Through adopting above-mentioned technical scheme, during the installation, the motor shaft inserts in the shaft hole, and the sliding ring that sets up on the rotor contacts with two carbon brushes, and when the rotor work in the motor was rotatory, drive the sliding ring rotatory with the friction of carbon brush produce noise, two acoustic celotex boards that set up in the end cover body carry out certain blocking to the noise through the acoustic celotex board to reach the effect of noise reduction, simultaneously, the acoustic celotex board occupies the space between two carbon brushes, neither influences the carbon brush, ensures the normal operation of motor, restricts the propagation of noise as far as possible again.

Optionally, the end cover body is provided with a bearing mounting hole for bearing mounting, the bearing mounting hole is coaxial with the shaft hole, and the aperture of the bearing mounting hole is larger than the aperture of the shaft hole.

Through adopting above-mentioned technical scheme, during the bearing installation, only need install the bottom of bearing mounting hole, compare in the bearing mounting hole that link up, the installation of bearing is simpler, does not need the position of control bearing installation.

Optionally, the bearing mounting hole is formed in an end face of the end cover body, which faces away from the brush assembly.

Through adopting above-mentioned technical scheme, install the bearing in the end cover body one end that deviates from the brush subassembly, make things convenient for the bearing to install and dismantle the change.

Optionally, the acoustic celotex board with be provided with the strengthening rib between the shaft hole, the strengthening rib is provided with eight, eight the strengthening rib winds the shaft hole evenly sets up.

Through adopting above-mentioned technical scheme, the rotor of motor drives the motor axle in rotatory in-process, and the motor axle is rotatory in the shaft hole, and the pore wall atress in shaft hole sets up the strengthening rib outside the shaft hole, can strengthen the intensity of the pore wall in shaft hole.

Optionally, the acoustic celotex board is kept away from the one end of end cover body is provided with oblique guide surface, the inner circle of oblique guide surface towards the shaft hole slope sets up.

By adopting the technical scheme, the installation of the oblique guide surface on the rotor plays a guiding role, the oblique guide surface inclines towards the shaft hole, and when the rotor touches the oblique guide surface, the rotor moves towards the shaft hole along with the oblique direction of the oblique guide surface.

Optionally, be provided with the baffle in the installation cavity, the baffle is provided with two, the baffle is located the carbon brush is kept away from one side of shaft hole, the both ends of baffle with the inner chamber wall in installation cavity is connected, two the baffle with the inner chamber wall of installation piece forms electric capacity installation cavity and thermal protector installation cavity, be provided with electric capacity in the electric capacity installation cavity, be provided with thermal protector in the thermal protector installation cavity.

Through adopting above-mentioned technical scheme, the electric capacity installation cavity and thermal protector installation cavity are constituteed with the inner chamber wall of installation cavity to the baffle, install electric capacity in the electric capacity installation cavity, install thermal protector in the thermal protector installation cavity, when the noise that the acoustic celotex board cut off propagates to the baffle, the baffle can block noise transmission to a certain extent.

Optionally, the outer peripheral wall of the end cover body is provided with a plurality of support blocks, and the support blocks are distributed around the outer peripheral wall.

Through adopting above-mentioned technical scheme, when the installation, the supporting shoe contacts with the shell of motor and slide into the installation, reduces the area of contact of end cover body and shell, has reduced the frictional force when installing, makes things convenient for the installation and the dismantlement of end cover body to change.

Optionally, the outer peripheral wall of the end cover body is integrally provided with a ring-shaped abutting part in a overhanging manner, and a sealing layer is arranged outside the ring-shaped abutting part.

Through adopting above-mentioned technical scheme, the end cover body is installed between motor and gear reduction box, and when the installation, the shell and the sealing layer laminating of gear reduction box and motor are inseparable, limit the end cover installation through annular butt portion like motor housing's distance, elasticity butt between end cover body and motor housing and the gear reduction box simultaneously.

Optionally, grooves are formed in two sides of the annular abutting portion, the grooves surround the peripheral wall, a plurality of through holes are formed in the grooves, and the through holes are distributed in the grooves.

Through adopting above-mentioned technical scheme, the sealing layer parcel is in the outside of annular butt portion, and the sealing layer passes through recess and through hole connection both sides sealing layer, fixed sealing layer parcel annular butt portion that can be better.

In summary, when assembling the motor, the motor shaft passes through the shaft hole, and the slip ring and the carbon brush that set up on the rotor contact, and when the rotor work in the motor was rotatory, drive slip ring rotation and carbon brush friction production noise, acoustic celotex board and baffle that set up in the installation cavity of end cover body can cut off noise to the end cover body outside propagation.

Drawings

Fig. 1 is a schematic structural view of a reduction motor of an embodiment of the present application;

FIG. 2 is a schematic installation view of a motor sound insulating end cap of an embodiment of the present application;

FIG. 3 is a main view of an end cap body of an embodiment of the present application;

FIG. 4 is a main view of a motor sound insulating end cap of an embodiment of the present application;

FIG. 5 is a schematic view of the motor soundproof end cap of the present embodiment in an upward mounted condition;

FIG. 6 is a schematic structural view of a deformation block in a motor sound insulating end cap of an embodiment of the present application;

fig. 7 is a schematic view of a motor soundproof end cover mounting cavity downward state according to an embodiment of the present application.

Reference numerals illustrate: 1. an end cap body; 2. a receptacle assembly; 3. a mounting cavity; 4. a brush assembly; 5. a carbon brush; 6. a buffer block; 7. a brush arm; 8. a shaft hole; 9. a sound insulation board; 10. bearing mounting holes; 11. a bearing; 12. a mounting block; 13. reinforcing ribs; 14. an inclined guide surface; 15. a partition plate; 16. an outer peripheral wall; 17. a thermal protector mounting cavity; 18. a capacitor mounting cavity; 19. a capacitor; 20. a thermal protector; 21. a support block; 22. an annular abutment; 23. a sealing layer; 24. a groove; 25. a through hole; 26. a gear reduction box; 27. a motor; 28. a housing; 29. a rotor; 30. a motor shaft; 31. a slip ring; 32. a conductive insert; 33. a mounting groove; 34. an inclined plane; 35. a stator; 36. concave holes; 37. a connecting plate; 38. a notch of the connecting plate; 39. a wiring hole; 40. a limiting block; 41. a deformation block; 42. a conductive sheet; 43. a conductive wire; 44. a deformation notch; 45. a guide surface; 46. a protrusion.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses a motor sound insulation end cover.

Referring to fig. 1 and 2, the motor soundproof end cover includes an end cover body 1 and a socket assembly 2, the end cover body 1 is mounted on a housing 28 of a motor 27, one end of the end cover body 1 far away from the housing 28 is connected with a gear reduction box 26, the motor 27 further includes a rotor 29 and a stator 35, a motor shaft 30 is fixed at the center of the rotor 29, and a slip ring 31 is arranged at one end of the rotor 29 mounted on the end cover body 1.

Referring to fig. 3 and 4, the end cover body 1 is provided with a mounting cavity 3, two partition plates 15 are arranged in the mounting cavity 3, the partition plates 15 are connected with the inner cavity wall of the mounting cavity 3 to divide the mounting cavity 3 into three parts, each of the three parts comprises a thermal protector mounting cavity 17 and a capacitor mounting cavity 18 which are positioned at two sides and a rectangular cavity which is positioned in the middle, two connecting plates 37 are respectively arranged in the thermal protector mounting cavity 17 and the capacitor mounting cavity 18, one end of each connecting plate 37 is connected with the inner cavity wall of the mounting cavity 3, the other end of each connecting plate 37 is connected with the partition plate 15, a thermal protector 20 is arranged between the connecting plates 37 of the thermal protector mounting cavity 17, a capacitor 19 is arranged between the connecting plates 37 of the capacitor mounting cavity 18, and wiring holes 39 are formed in the thermal protector mounting cavity 17 and the capacitor mounting cavity 18 for lines to pass through.

The brush subassembly 4 sets up in the rectangle chamber in the middle of the installation cavity 3, the brush subassembly 4 is provided with two, the brush subassembly 4 includes the brush arm 7 of copper, the buffer block 6 of parcel brush arm 7 and install the carbon brush 5 on brush arm 7, be provided with two installation pieces 12 in the installation cavity 3, the height of installation piece 12 is less than the inner chamber wall of installation cavity 3, installation piece 12 one end links to each other with the inner chamber wall of installation cavity 3 and forms the mounting groove 33 that supplies conductive insert piece 32 to install, the brush arm 7 one end inserts mounting groove 33 and conductive insert piece 32 fixedly, the end cover body 1 center is provided with the shaft hole 8 that power supply shaft 30 worn out, the brush subassembly 4 is rotatory 180 degrees setting around shaft hole 8, the brush subassembly 4 is located between shaft hole 8 and baffle 15.

Referring to fig. 5, the inner cavity wall of the installation cavity 3 is provided with a slope 34, the slope 34 is inclined toward the inside of the installation groove 33, and the conductive insertion piece 32 slides into the installation groove 33 by the guiding action of the slope 34.

Referring to fig. 4 and 5, two acoustic baffle plates 9 are arranged in the installation cavity 3, the two acoustic baffle plates 9 and the two carbon brushes 5 are uniformly arranged at intervals around the shaft hole 8, the acoustic baffle plates 9 are located between the shaft hole 8 and the installation block 12, one end, far away from the end cover body 1, of the acoustic baffle plates 9 is provided with an inclined guide surface 14, the inner ring of the inclined guide surface 14 is obliquely arranged towards the shaft hole 8, eight concave holes 36 are formed between the acoustic baffle plates 9 and the shaft hole 8, reinforcing ribs 13 are formed between the concave holes 36 and the concave holes 36, and the eight reinforcing ribs 13 are uniformly arranged around the shaft hole 8.

Referring to fig. 5 and 6, the thermal protector mounting cavity 17 penetrates the end cover body 1 up and down in the area between the two connecting plates 37, the cavity wall of the thermal protector mounting cavity 17 is provided with a limiting block 40 for limiting the movement of the thermal protector 20, the end face of the end cover body 1, which is away from the brush assembly 4, is provided with a deformation block 41, the deformation block 41 is connected with the cavity wall of the thermal protector mounting cavity 17, a deformation gap 44 is formed between the deformation block 41 and the bearing mounting hole 10, one side, which is far away from the bearing mounting hole 10, of the deformation block 41 is provided with a protrusion 46, a guide surface 45 is arranged on the protrusion 46, the guide surface 45 is obliquely arranged in the thermal protector mounting cavity 17, when the thermal protector 20 is mounted, the guide surface 45 is touched to enable the deformation block 41 to deform towards the deformation gap 44, when the thermal protector 20 is limited by the limiting block 40 to move, the deformation block 41 rebounds to enable the protrusion 46 to fix the thermal protector 20, and the deformation block 41 is arranged, so that the thermal protector 20 is more convenient to mount and dismount.

Referring to fig. 7, a bearing mounting hole 10 is formed in the end face, facing away from the brush assembly 4, of the end cover body 1, the bearing mounting hole 10 is used for mounting a bearing 11, the bearing mounting hole 10, the shaft hole 8 and the bearing 11 are coaxial, and the aperture of the bearing 11 is larger than that of the shaft hole 8.

In another embodiment, the end face of the end cover body 1, on which the brush assembly 4 is mounted, is provided with a bearing mounting hole 10, the bearing mounting hole 10 is used for mounting a bearing 11, the bearing mounting hole 10, the shaft hole 8 and the bearing 11 are coaxial, and the aperture of the bearing mounting hole 10 is larger than that of the shaft hole 8.

Referring to fig. 3 and 5, the outer peripheral wall 16 of the end cover body 1 is integrally provided with a ring-shaped abutting portion 22 in a overhanging manner, grooves 24 are formed on both sides of the ring-shaped abutting portion 22, the grooves 24 surround the outer peripheral wall 16, a plurality of through holes 25 are formed in the grooves 24, the through holes 25 are uniformly distributed in the grooves 24, a sealing layer 23 is arranged outside the ring-shaped abutting portion 22, and the sealing layer 23 is wrapped and fixed outside the ring-shaped abutting portion 22 through the through holes 25.

Referring to fig. 3 and 7, the peripheral wall 16 of the end cap body 1 is provided with eight support blocks 21, the support blocks 21 being distributed around the peripheral wall 16, the support blocks 21 each abutting against an annular abutment 22, wherein the support blocks 21 outside the thermal protector mounting cavity 17 and the capacitive mounting cavity 18 extend flush with the peripheral wall 16 from the other side of the annular abutment 22.

Referring to fig. 5 and 7, the socket assembly 2 is connected with the annular abutting portion 22 for being connected with an external power supply to supply power to the motor 27, the socket assembly 2 is located on one side of the capacitor installation cavity 18 away from the shaft hole 8, two conducting strips 42 are arranged inside the socket assembly 2 and the end cover body 1, one end of each conducting strip 42 is located on the socket assembly 2, the other end of each conducting strip penetrates out of the end cover body 1 away from the end face of the brush assembly 4, one conducting strip 42 is connected with one conducting insert 32 through a conducting wire 43, and the other conducting strip 42 is connected with the other conducting insert 32 through the conducting wire 43.

The implementation principle of the motor sound insulation end cover provided by the embodiment of the application is as follows: the motor shaft 30 is inserted into the shaft hole 8, the surface of the slip ring 31 is in contact with the carbon brush 5, when the rotor 29 of the motor 27 rotates, the slip ring 31 is driven to rotate and rub against the carbon brush 5 to generate noise, two sound insulation plates 9 arranged in the end cover body 1 block noise transmission, noise can be effectively reduced, the partition plate 15 arranged in the end cover body 1 is connected with the cavity wall of the installation cavity 3 to form the thermal protector installation cavity 17 and the capacitor installation cavity 18, and the effect of installation is achieved, and noise is reduced.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. A motor sound insulation end cover which is characterized in that: including end cover body (1), installation cavity (3) that supply brush subassembly (4) installed are seted up to end cover body (1), brush subassembly (4) are provided with two, shaft hole (8) that power supply shaft (30) were worn out are seted up at end cover body (1) center, brush subassembly (4) are around shaft hole (8) rotatory 180 degrees settings, brush subassembly (4) contain carbon brush (5), be provided with acoustic celotex board (9) in installation cavity (3), acoustic celotex board (9) are provided with two, carbon brush (5) with acoustic celotex board (9) are around shaft hole (8) even interval sets up.

2. A motor acoustical end cap as set forth in claim 1, wherein: the end cover body (1) is provided with a bearing mounting hole (10) for mounting a bearing (11), the bearing mounting hole (10) is coaxial with the shaft hole (8), and the aperture of the bearing mounting hole (10) is larger than that of the shaft hole (8).

3. A motor acoustical end cap as set forth in claim 2, wherein: the bearing mounting hole (10) is formed in the end face, deviating from the electric brush assembly (4), of the end cover body (1).

4. A motor acoustical end cap as set forth in claim 1, wherein: reinforcing ribs (13) are arranged between the sound insulation plate (9) and the shaft hole (8), eight reinforcing ribs (13) are arranged, and the eight reinforcing ribs (13) are uniformly arranged around the shaft hole (8).

5. A motor acoustical end cap as set forth in claim 1, wherein: one end of the sound insulation plate (9) far away from the end cover body (1) is provided with an inclined guide surface (14), and the inner ring of the inclined guide surface (14) is obliquely arranged towards the shaft hole (8).

6. A motor acoustical end cap as set forth in claim 1, wherein: be provided with baffle (15) in installation cavity (3), baffle (15) are provided with two, baffle (15) are located carbon brush (5) are kept away from one side of shaft hole (8), the both ends of baffle (15) with the inner chamber wall of installation cavity (3) is connected, two baffle (15) with the inner chamber wall of installation cavity (3) forms electric capacity installation cavity (18) and thermal protector installation cavity (17), be provided with electric capacity (19) in electric capacity installation cavity (18), be provided with thermal protector (20) in thermal protector installation cavity (17).

7. A motor acoustical end cap as set forth in claim 1, wherein: the outer peripheral wall (16) of the end cover body (1) is provided with a plurality of supporting blocks (21), and the supporting blocks (21) are distributed around the outer peripheral wall (16).

8. A motor acoustical end cap as set forth in claim 7, wherein: the outer peripheral wall (16) of the end cover body (1) integrally extends and is provided with a circle of annular abutting portion (22), and a sealing layer (23) is arranged outside the annular abutting portion (22).

9. A motor acoustical end cap as set forth in claim 8, wherein: grooves (24) are formed in two sides of the annular abutting portion (22), the grooves (24) surround the peripheral wall (16), a plurality of through holes (25) are formed in the grooves (24), and the through holes (25) are distributed in the grooves (24).