Fixing structure of bearing outer ring
By setting a fixing structure on the outer ring of the bearing and using the elastic elements of the anti-rotation pin and the limiting structure to provide preload, the problem of the outer ring of the bearing moving with the shaft is solved, thereby improving the operating efficiency of the motor and extending its service life.
Patent Information
- Application Number
- CN202520160068.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The outer ring of the floating end bearing of the motor moves during operation, which leads to increased wear of the mating parts, reduces motor efficiency, increases energy consumption and noise, and shortens service life.
A fixing structure is set on the outer ring of the bearing, including an anti-rotation pin and a limiting structure. An axial preload is provided by an elastic element, so that the anti-rotation pin abuts against the end face of the outer ring of the bearing to prevent the outer ring of the bearing from moving with the shaft. The pressure of the elastic element is used to push the anti-rotation pin into the bayonet to achieve fixation.
It improves the operating efficiency of the motor, reduces energy consumption and noise, and extends the service life of the motor.
Smart Images
Figure CN223708333U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor field especially relates to a fixed structure of bearing outer ring. BACKGROUND
[0002] At present, the rotor of new energy automobile drive motor has two groups of bearings as support on the front and back ends, and the two end bearings are fixed end on one end and floating end on the other end; the fixed end generally adopts bearing cover plus bolt locking and fixing, and the floating end generally adopts spring to provide bearing pre-tightening force.
[0003] Among them, the floating end bearing of the motor will appear the phenomenon that the outer ring of the bearing moves with the motor when the motor runs, and the operation of the outer ring of the bearing driven by the motor will aggravate the wear of the matched parts, reduce the operation efficiency of the motor, increase the energy consumption and noise, and shorten the service life of the motor. UTILITY MODEL CONTENTS
[0004] The utility model provides a fixed structure of bearing outer ring to more exactly solve the problem that the operation of the outer ring of the bearing driven by the motor aggravates the damage of the motor.
[0005] The utility model is realized through the following technical schemes:
[0006] The utility model provides a fixed structure of bearing outer ring, including shaft, bearing, fixed structure, limiting structure and end cover;
[0007] First through hole is equipped on the end cover, and bearing groove and limiting groove are equipped on both sides of the first through hole respectively;
[0008] The bearing is arranged in the bearing groove, and the limiting structure is arranged in the limiting groove;
[0009] The shaft penetrates the bearing, the first through hole, the fixed structure and the limiting structure in sequence, and is connected with the bearing in cooperation;
[0010] The limiting groove is equipped with pressing plate groove, and the pressing plate groove is used for placing the fixed structure.
[0011] Further, the bearing includes inner ring, rolling body and outer ring, the inner ring is matched with the shaft, the rolling body and the outer ring are arranged on the outer side of the inner ring in sequence, and the outer ring abuts against the bearing groove.
[0012] Further, the fixed structure includes pressing plate and anti-rotation pin, the anti-rotation pin is arranged on one side of the pressing plate, the other side of the pressing plate is equipped with flange, and the flange abuts against the limiting structure.
[0013] Further, the limiting groove is internally provided with a fixing groove, and the fixing groove is arranged on the edge of the pressing plate groove.
[0014] The pressing plate groove is internally provided with a second through hole, and the anti-rotation pin penetrates through the second through hole and abuts against the outer ring.
[0015] Further, one side of the outer ring is provided with a clamping opening corresponding to the anti-rotation pin, and the clamping opening is clamped with the anti-rotation pin.
[0016] Further, the limiting structure comprises a limiting plate and a fastener, and the limiting plate is provided with a limiting plate fixing hole, and the fastener penetrates through the limiting plate fixing hole and abuts against the fixing groove.
[0017] Further, an elastic member is arranged between the fixing structure and the limiting structure, the elastic member is in a wave shape, and the elastic member abuts against the fixing structure and the limiting structure respectively.
[0018] Further, one side of the limiting structure is provided with an elastic member groove, and the elastic member groove is oppositely arranged with the flange and abuts against the flange, and the outer diameter of the flange is less than or equal to the inner diameter of the elastic member groove.
[0019] Further, the elastic member is arranged in the flange and abuts against the pressing plate and the limiting plate respectively.
[0020] Further, the anti-rotation pin is correspondingly arranged with the clamping opening.
[0021] The beneficial effects of the utility model are as follows:
[0022] The utility model discloses a fixing structure of bearing outer ring, through setting fixing structure in the limiting groove on the end cover, and the anti-rotation pin on the fixing structure extends from the limiting groove to the bearing groove and abuts against the outer ring of bearing, is equipped with the clamping opening on the outer ring of bearing, does not need to specially adjust the position of the outer ring clamping opening and anti-rotation pin of bearing and is clamped, when assembling, the anti-rotation pin can provide greater axial pre-tightening force through the elastic member between the fixing structure and the limiting structure, makes the anti-rotation pin abut on the end face of the outer ring of bearing, drives the outer ring of bearing to rotate when the rotating shaft is operated, and the anti-rotation pin is under the pressure of the elastic member and is inserted into the clamping opening of the outer ring of bearing, thereby realizing the fixing of the outer ring of bearing, preventing the rotating shaft from driving the outer ring of bearing to operate, improving the operation efficiency of motor, simultaneously also reduce energy consumption and noise, thereby prolonging the service life of motor. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is the explosion diagram of the fixing structure of bearing outer ring in one embodiment of the utility model;
[0024] Figure 2It is the perspective view of the fixed structure of the bearing outer ring in one embodiment of the utility model;
[0025] Figure 3 It is the perspective view of the fixed structure of the bearing outer ring in one embodiment of the utility model from another angle;
[0026] Figure 4 It is the front view of the fixed structure of the bearing outer ring in one embodiment of the utility model;
[0027] Figure 5 It is Figure 4 the sectional view of A-A;
[0028] Figure 6 It is the front view of the bearing of the fixed structure of the bearing outer ring in one embodiment of the utility model;
[0029] Figure 7 It is the perspective view of the end cover of the fixed structure of the bearing outer ring in one embodiment of the utility model;
[0030] Figure 8 It is the perspective view of the end cover of the fixed structure of the bearing outer ring in one embodiment of the utility model from another angle;
[0031] Figure 9 It is the perspective view of the pressing plate of the fixed structure of the bearing outer ring in one embodiment of the utility model;
[0032] Figure 10 It is the perspective view of the limiting plate of the fixed structure of the bearing outer ring in one embodiment of the utility model;
[0033] Figure 11 It is the left view of the elastic piece of the fixed structure of the bearing outer ring in one embodiment of the utility model.
[0034] Label explanation: rotating shaft 110;
[0035] Bearing 120, inner ring 121, rolling body 122, outer ring 123, bayonet 1231;
[0036] Fixed structure 130, pressing plate 131, anti-rotation pin 132, flange 133;
[0037] Limiting structure 140, limiting plate 141, limiting plate fixing hole 1411, elastic piece groove 142, fastener 143;
[0038] End cover 150, first through hole 151, bearing groove 152, limiting groove 153, pressing plate groove 1531, second through hole 15311, fixed groove 1532.
[0039] Elastic piece 160. DETAILED DESCRIPTION
[0040] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the following will combine the technical scheme in the utility model embodiment to make clear and complete description, obviously, the described embodiment is part of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0041] Please refer to Figures 1-11 The utility model proposes a fixed structure 130 of bearing outer ring 123, including shaft 110, bearing 120, fixed structure 130, limiting structure 140 and end cover 150, be equipped with first through -hole 151 on end cover 150, and the both sides of first through -hole 151 are equipped with bearing groove 152 and limiting groove 153 respectively, bearing 120 is arranged in bearing groove 152, limiting structure 140 is arranged in limiting groove 153, shaft 110 is in order to pass through bearing 120, first through -hole 151, fixed structure 130 and limiting structure 140, and is connected with bearing 120 cooperation, limiting groove 153 is equipped with pressing plate recess 1531, and the pressing plate recess is used for placing fixed structure.
[0042] In the embodiment, the end cover 150 is provided with a first through hole 151, both sides of the first through hole 151 are respectively provided with a bearing groove 152 and a limiting groove 153, and the bottom of the limiting groove 153 is further provided with a pressing plate groove 1531. The bearing 120 comprises an inner ring 121, a rolling body 122 and an outer ring 123, the inner ring 121 is matched with the rotating shaft 110, the outer ring 123 is abutted with the bearing groove 152, and the rolling body 122 is arranged between the inner ring 121 and the outer ring 123 of the bearing 120. The rotating shaft 110 penetrates the bearing 120 and the first through hole 151, and is matched and connected with the inner ring 121 of the bearing 120. The fixing structure 130 is arranged in the pressing plate groove 1531 on the end cover 150, and the anti-rotation pin 132 on the fixing structure 130 extends from the pressing plate groove 1531 to the bearing groove 152 and is abutted with the outer ring 123 of the bearing 120. The clamping opening 1231 is arranged on the outer ring 123 of the bearing 120, and the position of the clamping opening 1231 of the outer ring 123 of the bearing 120 and the anti-rotation pin 132 is not specially adjusted. When assembled, the anti-rotation pin 132 can provide a larger axial pre-tightening force through the elastic element 160 between the fixing structure 130 and the limiting structure 140, so that the anti-rotation pin 132 is abutted on the end surface of the outer ring 123 of the bearing 120. When the rotating shaft 110 operates, the outer ring 123 of the bearing 120 is rotated, the anti-rotation pin 132 is pressed into the clamping opening 1231 of the outer ring 123 of the bearing 120 under the pressure of the elastic element 160, and then the outer ring 123 of the bearing 120 is fixed, so that the outer ring 123 of the bearing 120 is prevented from operating with the rotating shaft 110, the operating efficiency of the motor is improved, the energy consumption and noise are reduced, and the service life of the motor is prolonged.
[0043] Please refer to Figure 1 and Figure 6 , the bearing 120 comprises an inner ring 121, a rolling body 122 and an outer ring 123, the inner ring 121 is matched with the rotating shaft 110, the rolling body and the outer ring are arranged on the outer side of the inner ring in sequence, and the outer ring 123 is abutted with the bearing groove 152.
[0044] In specific implementation: the end cover 150 is circular, the first through hole 151 is arranged at the center of the end cover 150, one side of the first through hole 151 is provided with the bearing groove 152, and the other side is provided with the limiting groove 153. The radius of the bearing groove 152 is greater than the radius of the first through hole 151. The bearing 120 is arranged in the bearing groove 152, and the outer ring 123 of the bearing 120 is abutted with the inner wall of the bearing groove 152. The rotating shaft 110 penetrates the bearing 120 and the first through hole 151, and is matched with the inner ring 121 of the bearing 120.
[0045] Please refer to the attached Figure 1 and Figure 9The fixing structure 130 includes a pressing plate 131 and an anti-rotation pin 132, the anti-rotation pin 132 is arranged on one side of the pressing plate 131, and a flange 133 is arranged on the other side of the pressing plate 131, and the flange 133 abuts against the limiting structure 140.
[0046] In specific implementation: the fixing structure 130 includes a pressing plate 131 and an anti-rotation pin 132. The pressing plate 131 is in a circular ring shape, and the diameter of the inner circle is greater than the diameter of the first through hole 151, and the diameter of the outer circle is less than or equal to the diameter of the limiting groove 153. Wherein, the shape of the pressing plate 131 includes but is not limited to a circular ring shape. The anti-rotation pin 132 is arranged on one side of the pressing plate 131 and corresponds to the bayonet 1231 of the outer ring 123 of the bearing 120; the other side of the pressing plate 131 is provided with a flange 133, and the flange 133 is arranged on the edge of the pressing plate 131. The fixing structure 130 is placed in the limiting groove 153 of the end cover 150, the limiting groove 153 is provided with a second through hole 15311, the anti-rotation pin 132 penetrates through the second through hole 15311 and abuts against the outer ring 123 of the bearing 120, and the flange 133 abuts against the inner wall of the elastic piece groove 142 on one side of the limiting structure 140.
[0047] Please refer to the attached drawings Figure 5 and Figure 7 The limiting groove 153 is provided with a fixing groove 1532, and the fixing groove 1532 is arranged on the edge of the pressing plate groove 1531; the pressing plate groove 1531 is provided with a second through hole 15311, and the anti-rotation pin 132 penetrates through the second through hole 15311 and abuts against the outer ring 123.
[0048] In specific implementation: the limiting structure 140 includes a limiting plate 141 and a fastener 143. The first through hole 151 of the end cover 150 is provided with a bearing groove 152 and a limiting groove 153 on both sides, and the limiting groove 153 is provided with a fixing groove 1532, and the pressing plate groove 1531 is provided with a second through hole 15311. The second through hole 15311 penetrates from the bottom of the pressing plate groove 1531 to the bearing groove 152; the fixing groove 1532 is located at the bottom of the limiting groove 153, and is specifically arranged on the edge of the pressing plate groove 1531, and the fixing groove 1532 and the second through hole 15311 are arranged in a spaced manner. The pressing plate 131 of the fixing structure 130 is placed in the limiting groove 153, specifically in the pressing plate groove 1531, and the anti-rotation pin 132 on the pressing plate 131 of the fixing structure 130 penetrates through the second through hole 15311 and abuts against the outer ring 123 of the bearing 120 in the bearing groove 152. Wherein, the number and shape of the anti-rotation pin 132 and the second through hole 15311 can be adjusted according to actual conditions.
[0049] Please refer to the attached drawings Figure 5 , Figure 6 and Figure 9The one side of the outer ring 123 is provided with a socket 1231 corresponding to the anti-rotation pin 132, and the socket 1231 is clamped with the anti-rotation pin 132.
[0050] In the specific implementation, the outer ring 123 of the bearing 120 in the bearing groove 152 is provided with the socket 1231 on the side close to the bottom of the bearing groove 152, and the shape corresponds to the anti-rotation pin 132. The number and shape of the socket 1231 correspond to the anti-rotation pin 132, and can be adjusted according to the actual situation. When the pressing plate 131 of the fixing structure 130 is assembled with the end cover 150, the pressing plate 131 is placed in the pressing plate groove 1531 in the limiting groove 153, and the anti-rotation pin 132 on the pressing plate 131 passes through the second through hole 15311 and abuts against the outer ring 123 of the bearing 120 in the bearing groove 152. The anti-rotation pin 132 on the pressing plate 131 can be directly clamped into the socket 1231, or can abut against the end face close to the bottom of the bearing groove 152.
[0051] When the anti-rotation pin 132 is directly clamped into the socket 1231, and the fixing is provided through the elastic element 160 between the fixing structure 130 and the limiting structure 140, the anti-rotation pin 132 is not easily separated from the socket 1231 of the outer ring 123 of the bearing 120.
[0052] When the anti-rotation pin 132 abuts against the end face of the outer ring 123 close to the bottom of the bearing groove 152, the anti-rotation pin 132 is provided with a larger axial pre-tightening force through the elastic element 160 between the fixing structure 130 and the limiting structure 140, so that the anti-rotation pin 132 is tightly matched with the end face of the outer ring 123 of the bearing 120. When the rotating shaft 110 operates to drive the outer ring 123 of the bearing 120 to rotate, the anti-rotation pin 132 is pressed into the socket 1231 of the outer ring 123 of the bearing 120 under the pressure of the elastic element 160, thereby realizing the fixing of the outer ring 123 of the bearing 120.
[0053] Please refer to the accompanying drawings Figure 5 and Figure 10 The limiting structure 140 includes a limiting plate 141 and a fastener 143, and the limiting plate 141 is provided with a limiting plate fixing hole 1411, and the fastener 143 penetrates through the limiting plate fixing hole 1411 and abuts against the fixing groove 1532.
[0054] In specific implementation: the limiting groove 153 of the end cover 150 is provided with a fixing groove 1532, which is specifically arranged at the bottom of the limiting groove 153. The limiting structure 140 includes a limiting plate 141 and a fastener 143, and the limiting plate 141 is provided with a limiting plate fixing hole 1411, which is specifically arranged on the edge of the elastic element groove 142 on the limiting plate 141. The shape of the limiting plate 141 includes but is not limited to a circular shape. The limiting plate 141 of the limiting structure 140 is placed in the limiting groove 153, so that the limiting plate fixing hole 1411 is opposite to the fixing groove 1532 in the limiting groove 153, and the fastener 143 penetrates through the limiting plate fixing hole 1411 until it abuts against the fixing groove 1532 in the limiting groove 153, thereby realizing the connection and fixation of the limiting structure 140 and the end cover 150. The fastener 143 includes but is not limited to a bolt, a stud, a screw, a rivet and a pin.
[0055] Please refer to the attached Figure 1 , Figure 5 and Figure 11 , the elastic element 160 is arranged between the fixing structure 130 and the limiting structure 140, and the elastic element 160 is in wave shape and abuts against the fixing structure 130 and the limiting structure 140 respectively.
[0056] In specific implementation: when the anti-rotation pin 132 abuts against the end face of the outer ring 123 of the bearing 120 close to the bottom of the bearing groove 152, the anti-rotation pin 132 is provided with a larger axial pre-tightening force by the elastic element 160. The elastic element 160 is arranged between the fixing structure 130 and the limiting structure 140, and is specifically arranged in the flange 133 of the pressing plate 131, and the flange 133 of the pressing plate 131 abuts against the inner wall of the elastic element groove 142 on one side of the limiting structure 140, so that the elastic element 160 can be fixed between the fixing structure 130 and the limiting structure 140. The elastic element 160 is in wave shape and abuts against the pressing plate 131 and the bottom of the elastic element groove 142 respectively.
[0057] When the motor works, the rotating shaft 110 drives the outer ring 123 of the bearing 120 to rotate, and the anti-rotation pin 132 abutting against the end face of the outer ring 123 of the bearing 120 is pushed into the card hole 1231 of the outer ring 123 of the bearing 120 under the elastic force of the elastic element 160, and at the same time the compression amount of the elastic element 160 returns to the original state, so as to achieve the effect of fixing the outer ring 123 of the bearing 120, and can effectively absorb and consume vibration energy, protect the equipment and reduce noise.
[0058] Please refer to the attached Figure 5 and Figure 10 , one side of the limiting structure 140 is provided with an elastic element groove 142, and the elastic element groove 142 is arranged opposite to the flange 133 and abuts against the flange 133, and the outer diameter of the flange 133 is less than or equal to the inner diameter of the elastic element groove 142.
[0059] In a specific implementation, one side of the limiting structure 140 is provided with an elastic member groove 142, and the elastic member groove 142 is arranged opposite to the flange 133 of the pressing plate 131. In assembly, the flange 133 can abut against the inner side wall of the elastic member groove 142, so that the elastic member 160 assembled between the fixing structure 130 and the limiting structure 140 cannot easily come out of the elastic member groove 142.
[0060] Please refer to the accompanying drawings Figure 5 The elastic member 160 is arranged in the flange 133 and abuts against the pressing plate 131 and the limiting plate 141 respectively.
[0061] In a specific implementation, the diameter of the elastic member groove 142 is greater than or equal to the outer diameter of the flange 133 of the pressing plate 131, and the depth of the elastic member groove 142 is greater than or equal to the height of the flange 133 of the pressing plate 131. When the anti-rotation pin 132 on the pressing plate 131 does not enter the clamping opening 1231 of the outer ring 123 of the bearing 120 but abuts against the end face of the outer ring 123 of the bearing 120, the axial force borne by the pressing plate 131 is provided by the elastic member 160. The elastic member 160 is fixed through the flange 133 of the pressing plate 131, so that the elastic member 160 provides a larger axial pre-tightening force mainly acting on the pressing plate 131.
[0062] Please refer to the accompanying drawings Figure 9 The anti-rotation pin 132 is arranged corresponding to the clamping opening 1231.
[0063] In a specific implementation, the fixing structure 130 includes the pressing plate 131 and the anti-rotation pin 132, and the anti-rotation pin 132 is arranged on one side of the pressing plate 131. When the pressing plate 131 and the anti-rotation pin 132 are integrally formed, the assembly process of the combined fixing structure 130 can be saved. The shape of the pressing plate 131 includes but is not limited to a circular shape, and the shape and number of the anti-rotation pin 132 and the clamping opening 1231 corresponding to the anti-rotation pin 132 can be adjusted according to actual conditions.
[0064] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation based on the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.
Claims
1. A fixing structure of a bearing outer ring, characterized by, Including rotating shaft, bearing, fixed structure, limiting structure and end cover; The end cover is provided with a first through hole, and bearing grooves and limiting grooves are arranged on both sides of the first through hole; The bearing is arranged in the bearing groove, and the limiting structure is arranged in the limiting groove; The rotating shaft penetrates the bearing, the first through hole, the fixed structure and the limiting structure in sequence, and is connected with the bearing in a matched mode; The limiting groove is provided with a pressing plate groove for placing the fixed structure.
2. The fixing structure of the bearing outer ring according to claim 1, characterized in that, The bearing comprises an inner ring, a rolling body and an outer ring, the inner ring is matched with the rotating shaft, the rolling body and the outer ring are arranged on the outer side of the inner ring in sequence, and the outer ring abuts against the bearing groove.
3. The fixing structure of the bearing outer ring according to claim 2, characterized in that, The fixed structure comprises a pressing plate and an anti-rotation pin, the anti-rotation pin is arranged on one side of the pressing plate, the other side of the pressing plate is provided with a flange, and the flange abuts against the limiting structure.
4. The fixing structure of the bearing outer ring according to claim 3, characterized in that, The limiting groove is provided with a fixing groove, and the fixing groove is arranged on the edge of the pressing plate groove; The pressing plate groove is provided with a second through hole, and the anti-rotation pin penetrates the second through hole and abuts against the outer ring.
5. The fixing structure of the bearing outer ring according to claim 4, characterized in that, One side of the outer ring is provided with a corresponding bayonet of the anti-rotation pin, and the bayonet is engaged with the anti-rotation pin.
6. The fixing structure of the bearing outer ring according to claim 5, characterized in that, The limiting structure comprises a limiting plate and a fastener, and the limiting plate is provided with a limiting plate fixing hole, the fastener penetrates the limiting plate fixing hole and abuts against the fixing groove.
7. The fixing structure of a bearing outer ring according to claim 1, characterized by An elastic member is arranged between the fixed structure and the limiting structure, the elastic member is in a wave shape, and the elastic member abuts against the fixed structure and the limiting structure respectively.
8. The fixing structure of the bearing outer ring according to claim 6, characterized by One side of the limiting structure is provided with an elastic member groove, and the elastic member groove is arranged opposite to the flange and abuts against the flange, and the outer diameter of the flange is less than or equal to the inner diameter of the elastic member groove.
9. The fixing structure of the bearing outer ring according to claim 8, characterized in that, The elastic member is arranged in the flange and abuts against the pressing plate and the limiting plate respectively.
10. The fixing structure of a bearing outer ring according to claim 1, characterized by The anti-rotation pin is arranged corresponding to the bayonet.