Bearing sleeve antiskid type automobile air suspension motor end cover and motor assembly comprising same

Abstract

The utility model firstly discloses a bearing sleeve antiskid type automobile air suspension motor end cover and a motor assembly comprising the same, and the bearing sleeve antiskid type automobile air suspension motor end cover comprises a cover body which is penetrated by an output shaft in the motor assembly, the end, deviating from the cover body, of an output shaft in the motor assembly is connected to a middle connecting block in the motor assembly, the middle connecting block is connected with an eccentric shaft, a first bearing is installed between the middle connecting block and the cover body, and a rotation limiting structure is arranged on the cover body, acts on the first bearing and limits rotation of a shaft sleeve of the first bearing. According to the bearing sleeve antiskid type automobile air suspension motor end cover and the motor assembly comprising the same, the problem that the first bearing and the end cover are abraded due to the fact that the first bearing can rotate along with the eccentric shaft in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to a motor, in particular to a bearing sleeve anti-skid automobile air suspension motor end cover and a motor assembly comprising the same. Background Art

[0002] The applicant has designed an automobile air suspension motor, which includes: a motor body, an eccentric shaft, an eccentric drive unit and an intermediate connection block, wherein the output shaft of the motor body is fixed to the eccentric shaft, the axis of the eccentric shaft is not in a straight line with the axis of the output shaft of the motor body, and an eccentric drive unit is installed on the eccentric shaft, and the eccentric drive unit is used to push the first piston structure and the second piston structure in the automobile air suspension motor to move in the radial direction of the output shaft of the motor body; an intermediate connection block is installed at the connection between the output shaft and the eccentric shaft in the motor body. The intermediate connection block can balance the center of gravity of the eccentric drive unit and reduce vibration.

[0003] However, the above-mentioned automobile air suspension motor still has the following disadvantages: the motor body includes: an end cover and a housing, one end of the housing is closed by the end cover, the output shaft passes through the end cover, in order to guide the rotation of the output shaft, a first bearing is installed between the end cover and the intermediate connecting block, the first bearing is for the output shaft to pass through, the eccentric driving part is the second bearing, the eccentric shaft is installed on the intermediate connecting block, the eccentric shaft passes through the second bearing, the second bearing is located on the side of the intermediate connecting block away from the first bearing, the intermediate connecting block presses the first bearing on the end cover, the axis line of the eccentric shaft and the axis line of the output shaft are not in a straight line, when the eccentric shaft and the second bearing drive the external load to rotate, because the second bearing is pressed on the intermediate connecting block, the intermediate connecting block is pressed on the first bearing, and the first bearing is pressed on the end cover, there is a large friction between the first bearing and the end cover, resulting in damage to the end cover and / or the first bearing. After the end cover and / or the first bearing is damaged, it is very likely to damage the internal structure of the motor, or cause the intermediate connecting block and the second bearing to move arbitrarily in a direction parallel to the output shaft, making abnormal noise. Utility Model Content

[0004] The utility model provides a bearing sleeve anti-skid automobile air suspension motor end cover and a motor assembly containing the same, which solves the problem in the prior art that the first bearing and the end cover are worn because the first bearing can rotate with the eccentric shaft.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model firstly discloses a bearing sleeve anti-skid automobile air suspension motor end cover, comprising: a cover body, the cover body is penetrated by the output shaft of a motor assembly, one end of the output shaft of the motor assembly away from the cover body is connected to an intermediate connecting block in the motor assembly, the intermediate connecting block is connected to an eccentric shaft, a first bearing is installed between the intermediate connecting block and the cover body, a rotation limiting structure is provided on the cover body, the rotation limiting structure acts on the first bearing, and the rotation limiting structure limits the rotation of the sleeve of the first bearing.

[0007] Preferably, the rotation limiting structure comprises: a first protrusion and a second protrusion, the cover body protrudes to form the first protrusion and the second protrusion, and the first protrusion and the second protrusion extend into the sleeve of the first bearing.

[0008] The utility model also discloses a motor assembly, comprising: a motor body, an eccentric shaft, a first bearing and an intermediate connecting block; the motor body comprises: a housing, an output shaft and the above-mentioned bearing sleeve anti-skid automobile air suspension motor end cover.

[0009] Preferably, the eccentric shaft passes through a second bearing, the second bearing is located on a side of the middle connecting block away from the first bearing, and the second bearing is used to push a piston rod in an external automobile air suspension.

[0010] Preferably, the first bearing includes: a first rotating ring, a second rotating ring and a ball, the first rotating ring is surrounded by the output shaft, the second rotating ring is surrounded by the first rotating ring, the ball is arranged between the first rotating ring and the second rotating ring, the second rotating ring is covered with a sleeve, the sleeve is a cover ring structure, the sleeve limits the second rotating ring from separating from the cover body, and the end face of the sleeve is tightly attached to the middle connecting block, and the first rotating ring does not contact the cover body.

[0011] Preferably, the end surface of the shaft sleeve close to the cover body is recessed to form a groove, and the rotation limiting structure is inserted into the groove.

[0012] Preferably, an eccentric shaft is installed on a first side of the intermediate connecting block, and a counterweight block is extended to form a second side of the intermediate connecting block. The counterweight block and the eccentric shaft are symmetrically arranged on both sides of the output shaft.

[0013] Preferably, a cutting surface is formed on a side of the counterweight away from the output shaft.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the present application, a rotation limiting structure is provided on the middle cover body of the bearing sleeve anti-skid automobile air suspension motor end cover, and the shaft sleeve in the first bearing is designed to position the second rotating ring at the position of the pressing cover body, and the shaft sleeve is in contact with the middle connecting block, so that when the middle connecting block rotates, it only contacts with the end face of the shaft sleeve, and the shaft sleeve is restricted from rotating by the rotation limiting structure. When the output shaft rotates, although the first rotating ring can be driven to rotate by the output shaft, the second rotating ring positions the first rotating ring through the ball to ensure that the first rotating ring does not contact the end body, thereby ensuring that the output shaft and the middle connecting block rotate. The first rotating ring does not contact the cover body, and the second rotating ring and the sleeve do not rotate relative to the cover body. In this way, the cover body and the first bearing will not be worn due to the rotation of the first bearing relative to the cover body, which avoids the intermediate connecting block from moving in a direction parallel to the output shaft, and then avoids the second bearing from moving in a direction parallel to the output shaft at will, causing the second bearing to be separated from the piston rod in the external automobile suspension, and also avoids abnormal noise due to random movement, thereby ensuring that the entire motor drive can proceed smoothly, protecting the entire motor, and extending the service life of the motor.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the motor assembly.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the anti-skid automobile air suspension motor end cover of the bearing sleeve in the motor assembly after being cut open.

[0019] Figure 3 It is a cross-sectional view of the rotation limiting structure in the motor assembly.

[0020] Figure numerals: motor body 1, housing 11, output shaft 12, cover body 13, first protrusion 131, second protrusion 132, eccentric shaft 2, first bearing 3, first rotating ring 31, second rotating ring 32, ball 33, sleeve 34, intermediate connecting block 4, counterweight block 40, cutting surface 41, second bearing 5. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0022] Embodiment 1:

[0023] like Figures 1 to 3As shown, this embodiment discloses a bearing sleeve anti-skid automobile air suspension motor end cover, including: a cover body 13, the cover body 13 is passed through by the output shaft 12 in the motor assembly, the end of the output shaft 12 in the motor assembly away from the cover body 13 is connected to the middle connecting block 4 in the motor assembly, the middle connecting block 4 is connected to the eccentric shaft 2, the first bearing 3 is installed between the middle connecting block 4 and the cover body 13, and a rotation limiting structure is provided on the cover body 13, the rotation limiting structure acts on the first bearing 3, and the rotation limiting structure limits the rotation of the sleeve 34 of the first bearing 3.

[0024] The rotation limiting structure includes: a first protrusion 131 and a second protrusion 132. The cover body 13 protrudes to form the first protrusion 131 and the second protrusion 132. The first protrusion 131 and the second protrusion 132 extend into the sleeve 34 of the first bearing 3. The first protrusion 131 and the second protrusion 132 form a rotation limiting structure, thereby limiting the rotation of the sleeve 34.

[0025] Embodiment 2:

[0026] like Figures 1 to 3 As shown, this embodiment discloses a motor assembly, including: a motor body 1, an eccentric shaft 2, a first bearing 3 and an intermediate connecting block 4; the motor body 1 includes: a housing 11, an output shaft 12 and the bearing sleeve anti-slip automobile air suspension motor end cover as described in Example 1.

[0027] The eccentric shaft 2 passes through a second bearing 5, which is located on the side of the middle connecting block 4 away from the first bearing 3. The second bearing 5 is used to push the piston rod in the air suspension of the external vehicle. The second bearing 5 provides conditions for driving the piston rod in the air suspension of the external vehicle, ensuring that the eccentric shaft 2 can rotate smoothly relative to the piston rod in the air suspension of the external vehicle.

[0028] The first bearing 3 includes: a first rotating ring 31, a second rotating ring 32 and a ball 33. The first rotating ring 31 surrounds the output shaft 12, and the second rotating ring 32 surrounds the first rotating ring 31. The ball 33 is arranged between the first rotating ring 31 and the second rotating ring 32. The second rotating ring 32 is covered with a sleeve 34. The sleeve 34 is a cover ring structure. The sleeve 34 limits the second rotating ring 32 from being separated from the cover body 13, and the end face of the sleeve 34 is tightly attached to the middle connecting block 4. The first rotating ring 31 does not contact the cover body 13. The cover ring structure design of the sleeve 34 enables the sleeve 34 to contact the middle connecting block 4, ensuring that the middle connecting block 4 can be pressed against the first bearing 3 by the second bearing 5, and ensuring that the sleeve 34 can rotate. The sleeve 34 presses the second rotating ring 32 against the cover body 13. Since the sleeve 34 has been restricted from rotating by the first protrusion 131 and the second protrusion 132, the second rotating ring 32 positions the first rotating ring 31 through the ball 33, so that the first rotating ring 31 that can rotate with the output shaft 12 will not contact the cover body 13, thereby achieving no friction between the entire first bearing 3 and the cover body 13, thereby avoiding wear.

[0029] The end surface of the shaft sleeve 34 close to the cover body 13 is recessed to form a groove, and the groove is for the rotation limiting structure to be inserted into. The groove is for the first protrusion 131 and the second protrusion 132 of the rotation limiting structure to be inserted into.

[0030] The eccentric shaft 2 is installed on the first side of the intermediate connecting block 4, and the second side of the intermediate connecting block 4 extends to form a counterweight block 40, and the counterweight block 40 and the eccentric shaft 2 are symmetrically arranged on both sides of the output shaft 12. The counterweight block 40 counterweights the eccentric shaft 2, so that the center of gravity of the first side and the second side of the output shaft 12 is balanced, avoiding excessive vibration caused by the eccentric shaft 2 being installed only on the first side of the output shaft 12.

[0031] A cutting surface 41 is formed on the side of the counterweight 40 away from the output shaft 12. The cutting surface 41 is adjusted so that the counterweight 40 counterweights the eccentric shaft 2.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Bearing sleeve anti-skid automobile air suspension motor end cover, characterized in that: include: The cover body (13) is penetrated by the output shaft (12) in the motor assembly, one end of the output shaft (12) in the motor assembly facing away from the cover body (13) is connected to the middle connecting block (4) in the motor assembly, the middle connecting block (4) is connected to the eccentric shaft (2), a first bearing (3) is installed between the middle connecting block (4) and the cover body (13), a rotation limiting structure is provided on the cover body (13), the rotation limiting structure acts on the first bearing (3), and the rotation limiting structure limits the rotation of the shaft sleeve (34) of the first bearing (3).

2. The bearing sleeve anti-skid automobile air suspension motor end cover according to claim 1 is characterized in that: The rotation limiting structure comprises: a first protrusion (131) and a second protrusion (132); the cover body (13) protrudes to form the first protrusion (131) and the second protrusion (132); the first protrusion (131) and the second protrusion (132) extend into the shaft sleeve (34) of the first bearing (3).

3. The motor assembly is characterized in that: include: A motor body (1), an eccentric shaft (2), a first bearing (3) and an intermediate connecting block (4); The motor body (1) comprises: a housing (11), an output shaft (12) and the bearing sleeve anti-skid automobile air suspension motor end cover as claimed in claim 1 or 2.

4. The motor assembly according to claim 3, characterized in that: The eccentric shaft (2) passes through a second bearing (5), which is located on the side of the middle connecting block (4) away from the first bearing (3). The second bearing (5) is used to push a piston rod in an external automobile air suspension.

5. The motor assembly according to claim 3, characterized in that: The first bearing (3) comprises: a first rotating ring (31), a second rotating ring (32) and a ball (33); the first rotating ring (31) surrounds the outside of the output shaft (12); the second rotating ring (32) surrounds the first rotating ring (31); a ball (33) is arranged between the first rotating ring (31) and the second rotating ring (32); a sleeve (34) is arranged on the outer sleeve of the second rotating ring (32); the sleeve (34) is a cover ring structure; the sleeve (34) limits the second rotating ring (32) from being separated from the cover body (13); the end surface of the sleeve (34) is in close contact with the middle connecting block (4); and the first rotating ring (31) does not contact the cover body (13).

6. The motor assembly according to claim 5, characterized in that: The end surface of the shaft sleeve (34) close to the cover body (13) is recessed to form a groove, and the rotation limiting structure is inserted into the groove.

7. The motor assembly according to any one of claims 3 to 6, characterized in that: The eccentric shaft (2) is installed on the first side of the intermediate connecting block (4), and the second side of the intermediate connecting block (4) extends to form a counterweight block (40). The counterweight block (40) and the eccentric shaft (2) are symmetrically arranged on both sides of the output shaft (12).

8. The motor assembly according to claim 7, characterized in that: A cutting surface (41) is formed on the side of the counterweight block (40) facing away from the output shaft (12).

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