Bracket mounting structure of motor and motor
By adopting the pressure-bearing inclined surface design of the press-fit parts in the motor, the axial and circumferential limitation of the circuit board is achieved, solving the problems of circuit board rotation and screw loosening, and ensuring the stable operation and good pressure resistance of the motor.
Patent Information
- Application Number
- CN202422873300.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In existing motors, the circuit board is prone to circumferential rotation and screw loosening after being assembled with the bracket, causing motor vibration to damage the circuit board, and the screw head contacts the coil group, resulting in poor voltage resistance.
The pressure-bearing inclined surface design of the press-fitting part is adopted. Through the axial and circumferential limiting structure, the pressure-bearing inclined surface of the press-fitting part is compressed in both the axial and circumferential directions to achieve a stable connection of the circuit board and avoid looseness and poor contact problems caused by screw connections.
A firm connection between the circuit board and the bracket is achieved, which prevents the motor from being damaged by vibration during high-speed rotation and avoids poor contact between the screw metal parts and the motor windings. The structure is compact and stable.
Smart Images
Figure CN223451736U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor structures, in particular to an installation structure of a motor bracket. Background Art
[0002] A motor typically consists of a stator, a bracket, and a rotor. The stator's core and windings are mounted on the bracket, and the rotor rotates in conjunction with the bracket. The stator windings require power to operate, so after the bracket is assembled, it must be assembled with the motor's circuit board. After this assembly, the windings are electrically connected to the circuit board.
[0003] However, conventional electronic components, when assembled with a bracket and a circuit board, use a crimping element on the bracket to press the circuit board together to achieve axial position restriction, which can easily cause the circuit board to rotate circumferentially. Therefore, to achieve circumferential position restriction on the circuit board, screws are used after riveting. This structure can also cause the screws to loosen, leading to circumferential rotation of the circuit board. This can cause the motor board to vibrate during high-speed rotation, potentially damaging the circuit board.
[0004] At the same time, if a screw structure is provided, after the bracket is assembled with the circuit board, the head of the screw is likely to come into contact with the coil assembly after crimping, and the metal part of the screw may come into contact with the motor winding, resulting in poor pressure resistance. Utility Model Content
[0005] In order to overcome at least one of the defects described in the above-mentioned prior art, the utility model provides a bearing bracket installation structure and a motor, which can use the pressure inclined surface on the crimping part to guide the crimping part to be compressed in both the axial and circumferential directions when axially forced, thereby achieving axial and circumferential limitation.
[0006] The technical solution adopted by the present invention to solve the problem is:
[0007] A bracket mounting structure for a motor includes a bracket and a circuit board, wherein the bracket is provided with a crimping piece, and the circuit board is provided with a positioning groove. The crimping piece is used to be located in the positioning groove after the bracket is assembled to the circuit board, and the crimping piece is provided with a crimping section and a pressure-bearing inclined surface; the crimping section extends out of the end face of the circuit board, and the pressure-bearing inclined surface is used to guide the crimping section toward the circumferential side wall of the positioning groove and bend downward to be crimped to the end face of the circuit board when subjected to axial force.
[0008] Furthermore, the crimping part includes two crimping arms arranged obliquely and a positioning seat, the positioning seat is connected to the bottom ends of the two crimping arms; the crimping section is arranged at the end of the crimping arm; the positioning seat is used to be embedded in the positioning groove.
[0009] Further, the pressing arm is connected with the end surface of the positioning seat in a circular arc surface.
[0010] Further, the middle part of the circuit board is provided with a mounting hole; the positioning groove is arranged on the inner circumferential wall of the mounting hole; the support is inserted into the mounting hole, and the pressing piece is arranged on the outer circumferential wall of the support.
[0011] Further, the inner circumferential wall of the mounting hole is provided with a plurality of positioning grooves; the plurality of positioning grooves are circumferentially and intervally distributed around the central axis of the mounting hole; the outer circumferential wall of the support is provided with a plurality of pressing pieces, and the plurality of pressing pieces are arranged one by one corresponding to the plurality of positioning grooves.
[0012] Further, the bottom end of the support is provided with a bearing table, and the top end of the support is inserted through the mounting hole so that the bearing table abuts against the bottom end surface of the circuit board.
[0013] Further, the bearing table is provided with a first positioning piece, and the circuit board is provided with a second positioning piece, and the second positioning piece is used for positioning and inserting with the first positioning piece.
[0014] Further, the first positioning piece is a positioning column, and the second positioning piece is a positioning hole.
[0015] Further, the circuit board is provided with an electronic connector.
[0016] A motor comprising the support mounting structure of the motor.
[0017] In summary, the utility model has the following technical effects:
[0018] The force of the pressing piece is decomposed by the force inclined surface, so that the pressing section limits the circumferential rotation and the up-down displacement of the circuit board after pressing, and the circuit board and the support can be firmly connected without screw connection, and the screw-free structure can prevent the screw metal part from contacting the motor winding to cause poor pressure resistance in the compact structure of the motor. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a state structure schematic view of the support and the circuit board of the utility model;
[0020] Figure 2 It is a support structure schematic view in the utility model; Figure 1
[0021] Figure 3 It is another state structure schematic view of the support and the circuit board of the utility model;
[0022] Figure 4 It is a support structure schematic view in the utility model; Figure 3
[0023] Figure 5 It is a schematic view of the structure of the circuit board of the utility model.
[0024] Figure 6 It is a schematic view of the structure of the motor of the utility model.
[0025] Among them, the sign meaning is as follows: 10, support; 11, pressure joint; 111, pressure arm; 112, positioning seat; 113, pressure section; 12, bearing table; 121, positioning column; 20, circuit board; 21, positioning groove; 22, mounting hole; 23, positioning hole; 30, electronic connector; 40, motor. DETAILED DESCRIPTION
[0026] In order to better understand and implement, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model.
[0027] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.
[0029] Referring to Figures 1-6 The utility model discloses a support mounting structure of motor, including support 10 and circuit board 20, be equipped with pressure joint 11 on support 10, corresponding be equipped with positioning groove 21 on circuit board 20, positioning groove 21 can extend in the circumferential direction of circuit board 20, when assembling, support 10 can be installed on circuit board 20, at this time, pressure joint 11 is located in positioning groove 21.
[0030] Specifically, the above-mentioned pressure joint 11 is provided with a pressure section 113 and a pressure receiving inclined surface, and after the pressure joint 11 is located in the positioning groove 21, the pressure section 113 of the pressure joint 11 protrudes from the end surface of the circuit board 20, and the pressure receiving inclined surface guides the pressure section 113 to abut against the circumferential sidewall of the positioning groove 21 when subjected to an axial force, and bends downward to press against the end surface of the circuit board 20.
[0031] On the basis of the structure, when the bracket 10 and the circuit board 20 are installed, the bracket 10 and the circuit board 20 are assembled correspondingly, in the process, the crimping piece 11 of the bracket 10 can correspondingly extend in the positioning groove 21 of the circuit board 20, then, the external crimping jig is forced on the crimping piece 11, the pressure receiving inclined surface of the crimping piece 11 is subjected to axial force, due to the arrangement of the pressure receiving inclined surface, the pressure receiving inclined surface can decompose the force into axial force and circumferential force, so that the crimping section 113 can be pressed downward on the end surface of the circuit board 20 under the axial force, and at the same time, is resisted by the side wall of the positioning groove 21 in the circumferential direction, so that the crimping piece 11 can press the circuit board 20 in the axial direction and the circumferential direction after crimping, and limit the position in the axial direction and the circumferential direction.
[0032] That is, the force of the pressure receiving inclined surface of the crimping piece 11 is decomposed, so that the crimping section 113 limits the circumferential rotation and the up-down displacement of the circuit board 20 after crimping, so that the circuit board 20 and the bracket 10 can be firmly connected without screw connection, and the screw-free structure can prevent the problem of poor pressure resistance caused by the contact between the screw metal part and the winding of the motor 40 under the more compact structure of the motor 40.
[0033] Further, the crimping piece 11 in the embodiment includes two inclined crimping arms 111 and a positioning seat 112, the positioning seat 112 is protruded on the peripheral wall of the bracket 10, and the positioning seat 112 is connected to the bottom end of the two crimping arms 111, that is, the two inclined crimping arms 111 can form a V-shaped crimping groove at the top end of the positioning seat 112, and the crimping section 113 is arranged at the end of the crimping arm 111, when the bracket 10 and the circuit board 20 are assembled, the positioning seat 112 can be embedded in the positioning groove 21, and guide the two crimping arms 111 to be clamped at the same time, and the crimping section 113 of the crimping arm 111 extends out of the positioning groove 21. When the crimping action is performed, the crimping jig can extend through the V-shaped crimping groove, the inner side of the inclined crimping arm 111 forms the above-mentioned pressure receiving inclined surface, so that the crimping jig can press the two crimping arms 111 on both sides during the pressing process, and drive the two crimping arms 111 to be pressed tightly towards the two side walls of the positioning groove 21, and the crimping section 113 of the two crimping arms 111 can be crimped on the end surface of the circuit board 20 at the same time, so that the structure is more firm after crimping.
[0034] That is, there are two crimping arms 111 on both sides in the circumferential direction of the positioning groove 21, which can limit the position on both sides in the circumferential direction, and prevent loosening in the circumferential direction.
[0035] Of course, the crimping piece 11 can include an inclined crimping arm 111, but at least two crimping pieces 11 need to be arranged in the circumferential direction, corresponding to at least two positioning grooves 21 arranged in the circumferential direction of the circuit board 20, so that during crimping, at least two inclined crimping arms 111 are used to realize the abutting limiting in the circumferential direction, and at least two crimping sections 113 are used to realize the abutting limiting in the axial direction.
[0036] Further, the end surface of the crimping arm 111 and the positioning seat 112 in the embodiment can be connected by a circular arc surface, so that when the crimping jig is inserted into the V-shaped crimping groove between the two crimping arms 111, the circular arc surface can also bear the axial force when the crimping is crimped to the connection position of the positioning seat 112 and the crimping arm 111, preventing the connection position of the crimping arm 111 and the positioning seat 112 from being broken during the crimping process. At the same time, the circular arc surface can also realize force decomposition and provide a force to press the crimping arm 111 towards the side wall of the positioning groove 21, so that the structure after crimping is more firm.
[0037] Specifically, the bracket 10 and the circuit board 20 can be assembled in a penetrating manner, and the mounting hole 22 is arranged in the middle of the circuit board 20, and the positioning groove 21 is arranged on the inner circumferential wall of the mounting hole 22; the bracket 10 penetrates into the mounting hole 22, and the crimping piece 11 is arranged on the outer circumferential wall of the bracket 10. In this way, during assembly, the bracket 10 penetrates into the mounting hole 22 of the circuit board 20, so that the crimping piece 11 can extend into the positioning groove 21 on the inner circumferential wall of the mounting hole 22, and the connection position of the crimping piece 11 and the positioning groove 21 is located inside, reducing the structure leakage. At the same time, it can also reduce the interference of the crimping structure to the wire group on the outside of the bracket 10.
[0038] Of course, it also needs to be explained that the crimping piece 11 in the embodiment can be a metal sheet in the prior art, which can be pressed and bent after being stressed.
[0039] Further, the inner circumferential wall of the mounting hole 22 is provided with a plurality of positioning grooves 21, and the plurality of positioning grooves 21 are circumferentially spaced apart around the central axis of the mounting hole 22. Correspondingly, the outer circumferential wall of the bracket 10 is provided with a plurality of crimping pieces 11, and the plurality of crimping pieces 11 are arranged one by one corresponding to the plurality of positioning grooves 21. After the bracket 10 is assembled to the circuit board 20, a plurality of crimping pieces 11 and a plurality of positioning grooves 21 can be correspondingly crimped in the circumferential direction, so that the crimping structure at different positions in the circumferential direction realizes the limiting in the circumferential direction and the limiting in the axial direction.
[0040] On the basis of the structure that the crimping piece 11 is provided with two inclined crimping arms 111, the positioning grooves 21 at the same position in the circumference are pressed by two crimping arms 111 on both sides, and the positioning grooves 21 at different positions in the circumference are pressed and limited by two crimping arms 111 on both sides, so that the anti-rotation effect in the circumference is better. Of course, two crimping segments 113 at different positions in the circumference are used to realize axial limiting, so that the axial limiting structure is relatively stable.
[0041] More specifically, the bearing table 12 is arranged at the bottom end of the support 10, the top end of the support 10 is inserted through the mounting hole 22 so that the bearing table 12 abuts against the bottom end surface of the circuit board 20, so that when the crimping piece 11 is pressed and limited, the crimping piece 11 is pressed by the upper pressing jig, and the lower bearing table 12 can be stressed below the support 10, so that the crimping piece 11 is stressed more uniformly and is not prone to cracks when stressed.
[0042] Further, in order to facilitate the positioning state, the first positioning piece can be arranged on the bearing table 12, and the second positioning piece is arranged on the circuit board 20, so that the support 10 and the circuit board 20 can be positioned by the two positioning pieces when assembled, and the crimping piece 11 and the positioning groove 21 can be corresponded after positioning, thereby improving the assembly precision.
[0043] Further, the first positioning piece is a positioning column 121, and the second positioning piece is a positioning hole 23, so that the positioning can be realized by the positioning and insertion of the positioning column 121 and the positioning hole 23.
[0044] Of course, the first positioning piece can also be a positioning hole 23, and the second positioning piece can be a positioning column 121.
[0045] Further, the electronic connecting head 30 is arranged on the circuit board 20, which can integrate the working circuit on the circuit board 20, so that when the motor 40 is connected with other circuit structures, the electronic connecting head 30 can be directly used for plug-in connection, without additional wiring, and the electrical connection structure is more convenient.
[0046] Of course, the above-mentioned electronic connecting head 30 can be an electronic connector structure in the prior art.
[0047] Embodiment 2,
[0048] Referring to Figures 1-6 The motor 40 in the embodiment is provided with the support mounting structure of the motor in embodiment 1, the mounting structure of the support 10 and the circuit board 20 for assembling the stator winding group and the rotor in the motor 40 in the embodiment is the same as that in embodiment 1, the action structure and the action effect are the same as those in embodiment 1, and the other structures of the motor 40 are the prior art, which will not be described in detail.
[0049] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.
Claims
1. A motor bracket installation structure, characterized in that , including a bracket and a circuit board, the bracket is provided with a crimping piece, the circuit board is provided with a positioning groove, the crimping piece is used to be located in the positioning groove after the bracket is assembled to the circuit board, the crimping piece is provided with a crimping section and a pressure-bearing inclined surface; the crimping section extends out of the end face of the circuit board, and the pressure-bearing inclined surface is used to guide the crimping section toward the circumferential side wall of the positioning groove and bend downward to be crimped to the end face of the circuit board when subjected to axial force.
2. The motor bracket mounting structure according to claim 1, characterized in that: The crimping part includes two crimping arms arranged obliquely and a positioning seat, wherein the positioning seat is connected to the bottom ends of the two crimping arms; the crimping section is arranged at the end of the crimping arm; and the positioning seat is used to be embedded in the positioning groove.
3. The motor bracket mounting structure according to claim 2, characterized in that: The crimping arm is connected to the end surface of the positioning seat through an arc surface.
4. The motor bracket mounting structure according to any one of claims 1 to 3, characterized in that A mounting hole is provided in the middle of the circuit board; the positioning groove is provided on the inner peripheral wall of the mounting hole; the bracket is connected to the mounting hole, and the crimping piece is provided on the outer peripheral wall of the bracket.
5. The motor bracket mounting structure according to claim 4, characterized in that: A plurality of positioning grooves are provided on the inner peripheral wall of the mounting hole; the plurality of positioning grooves are distributed at intervals around the central axis of the mounting hole; a plurality of crimping parts are provided on the outer peripheral wall of the bracket, and the plurality of crimping parts are arranged in one-to-one correspondence with the plurality of positioning grooves.
6. The motor bracket mounting structure according to claim 4, characterized in that: A bearing platform is provided at the bottom end of the bracket, and the top end of the bracket penetrates through the mounting hole so that the bearing platform abuts against the bottom end surface of the circuit board.
7. The motor bracket mounting structure according to claim 6, characterized in that: A first positioning member is provided on the carrier platform, and a second positioning member is provided on the circuit board. The second positioning member is used for positioning and inserting with the first positioning member.
8. The motor bracket mounting structure according to claim 7, characterized in that: The first positioning member is a positioning column, and the second positioning member is a positioning hole.
9. The motor bracket mounting structure according to any one of claims 1 to 3, characterized in that: An electronic connector is provided on the circuit board.
10. A motor, characterized in that: A bracket mounting structure comprising a motor according to any one of claims 1 to 9.