Motor coupling structure

Abstract

The utility model relates to the technical field of automobile manufacturing, in particular to a motor coupler structure which comprises a motor (1) and a worm (2). A coupler (3) is arranged between the motor (1) and the worm (2); a buffer structure is arranged on the coupler (3); the coupling can achieve transmission and a certain damping effect for the motor and the worm, the impact force range can be enlarged after the buffer structure is additionally arranged, the abnormal sound failure risk caused by large impact is reduced, and meanwhile the buffer structure can further attenuate reverse impact from the worm.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, and in particular to a motor coupling structure. Background Art

[0002] The overall quality level of the current automotive industry is improving, and electric and hybrid vehicles are developing rapidly. The weight of vehicles is getting heavier and heavier. When these vehicles pass through bumpy roads such as cobblestone roads and cable roads, there will often be abnormal "thumping" noises / noises in the steering column. The abnormal noises vary in size among vehicles of different levels, especially when the vehicle weight is large, which greatly affects the passenger experience.

[0003] After searching, the applicant found that the Chinese patent document with publication number 107228133A disclosed an elastic coupling centering structure, an elastic coupling and an automobile on October 3, 2017. The elastic coupling centering structure includes: a flange with a spherical hole, a spherical flange and a dust cover, wherein the spherical hole flange is clamped with the spherical flange, and the dust cover is arranged at the interface between the spherical hole flange and the spherical flange; this device also cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing coupling structure. Utility Model Content

[0005] The purpose of the utility model is to provide a motor coupling structure which can reduce the noise when a car is running bumpy.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a motor coupling structure, comprising a motor and a worm; a coupling is provided between the motor and the worm; and a buffer structure is provided on the coupling.

[0007] The motor includes a motor core shaft; the worm includes a worm core shaft; the motor core shaft and the worm core shaft are both connected to the coupling; and the buffer structure is arranged between the motor core shaft and the worm core shaft.

[0008] The buffer structure includes a spring; the spring is arranged in the coupling and between the motor core shaft and the worm core shaft.

[0009] The end surfaces of the motor core shaft and the worm core shaft are both provided with mounting grooves; the two ends of the spring are respectively arranged in the mounting grooves.

[0010] The coupling is provided with a mounting hole; the ends of the motor core shaft and the worm core shaft are both sleeved in the mounting hole.

[0011] Transmission teeth are provided on the side surfaces of the motor core shaft and the worm core shaft; tooth grooves are provided inside the mounting hole; and the transmission teeth are mounted in the tooth grooves.

[0012] The transmission teeth are evenly distributed along the edges of the motor core shaft and the worm core shaft respectively; the tooth grooves are evenly distributed along the edge of the mounting hole.

[0013] The mounting groove is a circular groove.

[0014] The transmission teeth are carbon steel teeth; the coupling is a rubber-plastic coupling.

[0015] The beneficial effects of this application are:

[0016] In this application, a spring is provided between the motor core shaft and the worm core shaft; at the same time, the installation grooves on the end faces at both ends act as a limit, allowing a spring to be installed between the motor core shaft and the worm core shaft; the strength of the coupling itself can adapt to a certain elastic deformation to avoid metal collision caused by the movement and swing of the core shaft, and then produce abnormal noise; the coupling itself plays a transmission and certain shock-absorbing effect. After adding a shock-absorbing spring, the impact force range can be increased, reducing the risk of failure due to abnormal noise due to large impact. At the same time, the spring can also attenuate the reverse impact from the worm gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a structural diagram of the motor coupling structure.

[0019] Figure 2 This is a cross-sectional view of the motor coupling structure.

[0020] The marks in the above figure are:

[0021] The following are marked in the figure:

[0022] 1. Motor,

[0023] 2. Worm gear,

[0024] 3. Coupling, 301, mounting hole, 302, tooth groove,

[0025] 4. Motor core shaft, 401, transmission gear,

[0026] 5. Worm core shaft,

[0027] 6. Spring,

[0028] 7. Installation slot. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the present invention and to facilitate its implementation.

[0030] Figure 1 The motor coupling structure shown includes a motor 1 and a worm 2; a coupling 3 is provided between the motor 1 and the worm 2; and a buffer structure is provided on the coupling 3.

[0031] The coupling 3 can achieve transmission and a certain shock absorption effect for the motor 1 and the worm 2. After adding the buffer structure, the impact force range can be increased, reducing the risk of failure due to abnormal noise caused by large impact. At the same time, the buffer structure can also attenuate the reverse impact from the worm 2.

[0032] The motor 1 includes a motor core shaft 4; the worm 2 includes a worm core shaft 5; the motor core shaft 4 and the worm core shaft 5 are both connected to the coupling 3; and a buffer structure is provided between the motor core shaft 4 and the worm core shaft 5.

[0033] The motor core shaft 4 is installed on the output end of the motor 1; the worm core shaft 5 is connected to the motor core shaft 4 through the coupling 3; thereby realizing the transmission between the motor 1 and the worm 2.

[0034] The buffer structure includes a spring 6 ; the spring 6 is provided in the coupling 3 and between the motor core shaft 4 and the worm core shaft 5 .

[0035] The outer diameter of the spring 6 is 8.5 mm, the height is 12 mm, and the stiffness is 100-150 N / mm; the spring 6 is installed between the end faces of the motor core shaft 4 and the worm core shaft 5; the worm 2 is subjected to axial and radial forces at different frequencies during movement, causing axial and radial movement, thereby compressing the spring 6; the elastic characteristics of the spring 6 itself can increase the impact force range and reduce the risk of failure due to abnormal noise due to large impact. At the same time, the spring 6 can also attenuate the reverse impact from the worm gear 2.

[0036] Mounting grooves 7 are provided on the end surfaces of the motor core shaft 4 and the worm core shaft 5 ; both ends of the spring 6 are respectively arranged in the mounting grooves 7 .

[0037] Mounting grooves 7 are provided on the facing end faces of the motor core shaft 4 and the worm core shaft 5; the two ends of the spring 6 are respectively installed in the mounting grooves 7, which can achieve effective limiting; when the spring 6 is completely squeezed by the motor core shaft 4 and the worm core shaft 5, the spring 6 can be completely contracted in the mounting groove 7.

[0038] A mounting hole 301 is provided in the coupling 3 ; ends of the motor core shaft 4 and the worm core shaft 5 are both sleeved in the mounting hole 301 .

[0039] The structure of the coupling 3 is that the outer ring is circular, and the inner ring has teeth grooves 302 evenly distributed in the circumferential direction. There are 10 teeth grooves 302, and the shape of the teeth grooves 302 is a square straight groove with a groove depth of 2.5mm, a groove width of 1.8mm, and an inner diameter of 20mm. The material of the coupling 3 is rubber plastic with a hardness of 70-85HA. The two ends of the motor core shaft 4 and the worm core shaft 5 are respectively sleeved in the mounting holes 301, thereby realizing the installation operation of the two on the coupling 3.

[0040] Transmission teeth 401 are provided on the side surfaces of the motor core shaft 4 and the worm core shaft 5 ; a tooth groove 302 is provided inside the mounting hole 301 ; and the transmission teeth 401 are mounted in the tooth groove 302 .

[0041] The transmission teeth 401 are square teeth evenly distributed in the circumferential direction of the outer ring of the motor core shaft 4 and the worm core shaft 5. There are 10 teeth, the shape is square straight teeth, the tooth height is 2.2mm, the tooth width is 2.0mm, and the material is carbon steel; the transmission teeth 401 of the motor core shaft 4 are clamped in the tooth groove 302, so that power can be transmitted to the coupling 3; the transmission teeth 401 of the worm core shaft 5 are clamped in the tooth groove 302, so that power can be received by the coupling 3.

[0042] The transmission teeth 401 are evenly distributed along the edges of the motor core shaft 4 and the worm core shaft 5 respectively; the tooth grooves 302 are evenly distributed along the edge of the mounting hole 301.

[0043] The motor core shaft 4 and the worm core shaft 5 are both cylindrical structures; 10 transmission teeth 401 are respectively provided on the side surfaces of the motor core shaft 4 and the worm core shaft 5, so as to achieve full power transmission.

[0044] The mounting groove 7 is a circular groove.

[0045] The mounting groove 7 is a circular groove structure that can fit the shape of the spring 6 , thereby enabling the installation and positioning of the spring 6 and effectively preventing the spring 6 from falling out of the mounting groove 7 during operation, thereby causing buffer failure.

[0046] The transmission teeth 401 are carbon steel teeth; the coupling 3 is a rubber-plastic coupling.

[0047] The transmission teeth 401 are made of carbon steel, which makes them have high toughness and good wear resistance and a long service life. The coupling 3 is made of rubber and plastic materials, which have high elasticity and wear resistance. The coupling 3 can adapt to a certain elastic deformation to avoid metal collision caused by the movement and swing of the core shaft, and thus produce abnormal noise; thereby achieving transmission and a certain shock absorption effect.

[0048] The specific workflow of this utility model is as follows:

[0049] Install the spring 6 in the mounting groove 7 of the motor core shaft 4, install the coupling 3 on the motor core shaft 4, and install the worm core shaft 5 from the other side of the coupling 3, so that the spring 6 is away from the end of the motor core shaft 4 and installed in the mounting groove 7 of the worm core shaft 5.

[0050] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A motor coupling structure, characterized in that: It comprises a motor (1) and a worm (2); a coupling (3) is provided between the motor (1) and the worm (2); and a buffer structure is provided on the coupling (3); The motor (1) includes a motor core shaft (4); the worm (2) includes a worm core shaft (5); the motor core shaft (4) and the worm core shaft (5) are both connected to the coupling (3); the buffer structure is provided between the motor core shaft (4) and the worm core shaft (5); The buffer structure comprises a spring (6); the spring (6) is arranged in the coupling (3) and between the motor core shaft (4) and the worm core shaft (5).

2. A motor coupling structure according to claim 1, characterized in that: The end faces of the motor core shaft (4) and the worm core shaft (5) are both provided with mounting grooves (7); and both ends of the spring (6) are respectively arranged in the mounting grooves (7).

3. A motor coupling structure according to claim 2, characterized in that: A mounting hole (301) is provided in the coupling (3); the ends of the motor core shaft (4) and the worm core shaft (5) are both sleeved in the mounting hole (301).

4. A motor coupling structure according to claim 3, characterized in that: Transmission teeth (401) are provided on the side surfaces of the motor core shaft (4) and the worm core shaft (5); a tooth groove (302) is provided inside the mounting hole (301); and the transmission teeth (401) are mounted in the tooth groove (302).

5. A motor coupling structure according to claim 4, characterized in that: The transmission teeth (401) are evenly distributed along the edges of the motor core shaft (4) and the worm core shaft (5); and the tooth grooves (302) are evenly distributed along the edge of the mounting hole (301).

6. A motor coupling structure according to any one of claims 4-5, characterized in that: The mounting groove (7) is a circular groove.

7. A motor coupling structure according to claim 6, characterized in that: The transmission teeth (401) are carbon steel teeth; and the coupling (3) is a rubber-plastic coupling.

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