CN212304971U

CN212304971U - Car tail door driving device

Info

Publication number: CN212304971U
Application number: CN202022142936.1U
Authority: CN
Inventors: 苏霁益
Original assignee: Zhoushan Tianhan Plastics Co ltd
Current assignee: Zhoushan Tianhan Plastics Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-05
Anticipated expiration: 2030-09-27

Abstract

The car tail door driving device comprises a shell, a driving mechanism, a gear transmission mechanism and a screw rod transmission mechanism, wherein the driving mechanism adopts a driving motor as a power source, the driving motor comprises a motor shell and a rubber cover body arranged on the motor shell, two brush boxes for placing carbon brushes are arranged along the inner wall of the rubber cover body, the carbon brushes penetrate through the brush boxes, the tail ends of the carbon brushes are provided with elastic components, two sides of each brush box are connected with rubber cover protective layers, the upper end surfaces of the rubber cover protective layers are flush with the upper end surfaces of the brush boxes, the brush boxes and the rubber cover protective layers are connected into an inner ring in an end-to-end seamless mode, the height of the rubber cover protective layers is increased to be flush with the upper end surfaces of the brush boxes, the brush boxes and the rubber cover protective layers are connected in a seamless mode to form a closed inner ring, the airtightness of the inner ring is remarkably improved, carbon powder in the rubber covers is concentrated together in, the permanent magnet direct current motor can not splash everywhere, effectively solves the problem of voltage withstand breakdown of the permanent magnet direct current motor, and improves the structural strength of the inner ring.

Description

Car tail door driving device

Technical Field

The utility model relates to a drive arrangement especially relates to a car tail-gate drive arrangement.

Background

The motor in the car tail gate driving device plays a role in closing, and the problem of voltage-resistant breakdown is often encountered in the motor service life test, so that the reason is that the voltage-resistant breakdown is often caused by splashing of carbon powder in a rubber cover in the motor, the height of an inner ring of the rubber cover of the traditional direct current motor is not enough and is not closed, a gap is left between a protective layer of the rubber cover and a brush box, and the defect of insufficient tightness exists.

Meanwhile, in the existing motor structure, the rubber cover is designed into an inclined plane structure on the assembly surface, the contact surface of the motor iron shell connected with the rubber cover is also designed into an inclined plane structure, and the rubber cover and the motor iron shell are assembled by utilizing the contact and matching of the two inclined planes. Although the structure is simple, in practical application, the rubber cover is easy to tilt, the connection is not firm enough, the concentricity of the rubber cover and the iron shell of the motor is difficult to ensure, the operation is not stable enough, and the strength needs to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the shortcoming and not enough among the prior art, provide a solve the withstand voltage breakdown problem of motor and improve the car tail-gate drive arrangement who covers mounting structure.

In order to achieve the above object, the utility model discloses realize according to following technical scheme:

the car tail door driving device comprises a shell, a driving mechanism, a gear transmission mechanism and a screw rod transmission mechanism, wherein the power source of the driving mechanism is a driving motor,

the driving motor comprises a motor shell and a rubber cover body arranged on the motor shell, two brush boxes used for placing carbon brushes are arranged on the inner wall of the rubber cover body, the carbon brushes penetrate through the brush boxes, the tail ends of the carbon brushes are provided with elastic assemblies, rubber cover protective layers are connected to two sides of each brush box, the upper end faces of the rubber cover protective layers are flush with the upper end faces of the brush boxes, and the brush boxes and the rubber cover protective layers are connected into inner rings in an end-to-end seamless mode.

The elastic assembly comprises an installation shaft and an elastic piece sleeved on the installation shaft, and a first force application end at one end of the elastic piece abuts against the tail end face of the carbon brush.

The upper end part of the mounting shaft is divided into two parts, and the second force application end at the other end of the elastic piece is clamped between the upper end parts of the mounting shaft.

The upper end face of the rubber cover body is provided with a plurality of annular-array grooves, and the motor shell is internally provided with a convex block matched with the grooves.

The groove inner wall is provided with a raised line, the outer wall of the raised block is provided with a sliding groove, and the raised line is installed in a matched mode with the sliding groove.

The protective layer of the rubber cover is of an arc-shaped sheet structure.

Has the advantages that: the utility model discloses the height that will glue the lid inoxidizing coating highly improves to flushing with the up end of brush box, and brush box and glue the lid inoxidizing coating and realize seamless connection, the confined inner circle has been formed, this kind makes the seal of inner circle have apparent promotion, direct current motor is at the operation in-process, the carbon dust of gluing in the lid is concentrated together, can not splash everywhere, the problem of the withstand voltage breakdown of permanent magnet direct current motor has been solved effectively, and the structural strength of inner circle has been improved, be equipped with two brush boxes that are used for placing the carbon brush along gluing lid body inner wall, place the carbon brush in the brush box and solve the unstability behind the extension carbon brush, the length of carbon brush has been extended simultaneously, the life of carbon brush has been prolonged.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural view (elastic member) of the present invention.

Fig. 4 is a top view of the present invention.

Fig. 5 is an enlarged view of a portion a.

Fig. 6 is a schematic view of a bump structure.

The brush box comprises a rubber cover body 1, a carbon brush 2, a brush box 3, a rubber cover protective layer 5, an inner ring 6, an installation shaft 7, an elastic piece 8, a groove 9, a convex block 10, a convex strip 11 and a sliding groove 12.

Detailed Description

The following will further explain the embodiments of the present invention with reference to the accompanying drawings, as shown in the drawings, a car tail door driving device, the driving device includes a housing, a driving mechanism, a gear transmission mechanism and a screw rod transmission mechanism, the power source of the driving mechanism is a driving motor, the driving motor includes a motor housing and a rubber cover body 1 mounted on the motor housing, two brush boxes 3 for placing carbon brushes 2 are arranged along the inner wall of the rubber cover body 1, the carbon brushes 2 penetrate the brush boxes 3, the tail ends of the carbon brushes 2 are provided with elastic components, both sides of each brush box 3 are connected with rubber cover protective layers 5, the upper end surfaces of the rubber cover protective layers 5 are flush with the upper end surfaces of the brush boxes 3, the brush boxes 3 and the rubber cover protective layers 5 are connected end to form inner rings 6, the height of the rubber cover protective layers 5 is increased to be flush with the upper end surfaces of the brush boxes, and the brush boxes 3 and the rubber cover protective, the closed inner ring 6 is formed, so that the airtightness of the inner ring 6 is obviously improved, the direct current motor is in the operation process, carbon powder in the rubber cover is concentrated together and cannot splash everywhere, the problem of voltage withstand breakdown of the permanent magnet direct current motor is effectively solved, the structural strength of the inner ring 6 is improved, two brush boxes 3 for placing the carbon brushes 2 are arranged along the inner wall of the rubber cover body 1, the carbon brushes 2 are placed in the brush boxes 3, the instability of the lengthened carbon brushes 2 is solved, the length of the lengthened carbon brushes 2 is increased, and the service life of the carbon brushes 2 is prolonged.

The elastic assembly comprises a mounting shaft 7 and an elastic piece 8 sleeved on the mounting shaft 7, and a first force application end at one end of the elastic piece 8 abuts against the tail end face of the carbon brush 2.

The upper end part of the mounting shaft 7 is divided into two parts, and the second force application end at the other end of the elastic piece 8 is clamped between the upper end parts of the mounting shaft 7.

The rubber cover protective layer 5 is of an arc-shaped sheet structure.

The upper end face of the rubber cover body 1 is provided with a plurality of annular-array grooves 9, and a projection 10 matched with the grooves 9 is arranged in the motor shell.

The inner wall of the groove 9 is provided with a raised line 11, the outer wall of the bump 10 is provided with a sliding groove 12, and the raised line 11 is installed in cooperation with the sliding groove 12.

The utility model is fixedly connected with the matching mode of the groove 9 of the motor cover and the lug 10, and the matching of the convex strip 11 and the sliding groove 12 is increased on the basis, so that the whole connection is firm, the concentricity of the rubber cover and the motor shell is ensured, the smooth and stable operation of the motor is ensured, the pushing-off force of the rubber cover is increased, and the safety and the reliability are realized; the utility model discloses strengthen the rubber cover intensity, under receiving the thrust effect, non-deformable.

Claims

1. Car tail-gate drive arrangement, drive arrangement includes casing, actuating mechanism, gear drive and screw drive, actuating mechanism's power supply is driving motor, its characterized in that: the driving motor comprises a motor shell and a rubber cover body (1) arranged on the motor shell, two brush boxes (3) used for placing carbon brushes (2) are arranged on the inner wall of the rubber cover body (1), the carbon brushes (2) penetrate through the brush boxes (3), elastic assemblies are arranged at the tail ends of the carbon brushes (2), rubber cover protective layers (5) are connected to two sides of each brush box (3), the upper end face of each rubber cover protective layer (5) is flush with the upper end face of each brush box (3), and the brush boxes (3) and the rubber cover protective layers (5) are connected into an inner ring (6) in a head-tail seamless mode.

2. The car tail gate drive device of claim 1, wherein: the elastic assembly comprises an installation shaft (7) and an elastic piece (8) sleeved on the installation shaft (7), and a force application end at one end of the elastic piece (8) abuts against the tail end face of the carbon brush (2).

3. The car tail gate drive device of claim 2, wherein: the upper end part of the mounting shaft (7) is divided into two parts, and the second force application end at the other end of the elastic piece (8) is clamped between the upper end parts of the mounting shaft (7).

4. The car tail gate drive device of claim 1, wherein: the upper end face of the rubber cover body (1) is provided with a plurality of annular-array grooves (9), and a projection (10) matched with the grooves (9) is arranged in the motor shell.

5. The car tail gate drive device of claim 4, wherein: the inner wall of the groove (9) is provided with a convex strip (11), the outer wall of the convex block (10) is provided with a sliding groove (12), and the convex strip (11) is installed in a matched mode with the sliding groove (12).

6. The car tail gate drive device of claim 1, wherein: the rubber cover protective layer (5) is of an arc-shaped sheet structure.