Motor stator device and electric water pump motor

Abstract

The utility model provides a motor stator device, which comprises an annular iron core, the iron core comprises an outer ring part and a winding part, the outer edge of the winding part is provided with a coil winding, an insulating bracket for isolating the coil winding and the winding part is arranged between the coil winding and the winding part, and the insulating bracket is provided with a limiting structure along the axial direction of the iron core. The position, corresponding to the limiting structure, of the iron core is provided with a matching structure in the axial direction of the iron core, the limiting structure and the matching structure are in sliding fit in the axial direction of the iron core so as to guide axial insertion positioning of the iron core and the insulation support, the iron core and the insulation support are guided to be assembled in place in the axial direction through the structure, and an additional positioning structure in the axial direction of the stator is provided. Relative rotation is prevented, the assembly difficulty is reduced during assembly, the relative positions of the iron core and the insulation support are easy to align, one-time accurate assembly can be achieved, the space allowance reserved between the iron core and the insulation support due to assembly requirements can be reduced as much as possible, and the integrity and reliability of the motor stator structure are further improved. The utility model also provides an electric water pump motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump equipment technical field, specifically, relate to a motor stator device, still relate to a kind of electric drive water pump motor. BACKGROUND

[0002] Water pump is the mechanical of conveying liquid or making liquid pressure increase. It transmits the mechanical energy of prime mover or other external energy to liquid, so that liquid energy increases, mainly used to transport liquid including water, oil, acid-base liquid, emulsion, suspension emulsion and liquid metal etc., also can transport liquid, gas mixture and the liquid of containing suspended solid.

[0003] Electric drive water pump is a kind of pump equipment that is more widely used at present, and its working power of water pump is provided by motor structure, and the motor structure of annular stator cooperating with shaft rotor is a kind of common basic design, for the brushless motor with coil winding being arranged in annular stator, the circuit structure design is more stable, and the distribution structure of stator core and coil winding of the design is determined by the output characteristics of motor, so there is complexity in structure, and there is considerable challenge to the assembly and positioning between parts in stator.

[0004] In current motor stator manufacturing procedure, in assembly link, due to lack of accurate positioning design, the positioning of parts mainly depends on manual repeated measurement and debugging, not only consumes a lot of time and manpower, but also is prone to cause insufficient assembly precision, assembly position is not correct, and further causes unstable motor performance, and high scrap rate. And in motor operation process, due to lack of stability of connection between parts, in the face of complex vibration and electromagnetic force interference, parts are prone to displacement and loosening, so that motor vibration is intensified, energy loss is greatly increased, seriously shortens the service life of motor, and reduces working efficiency.

[0005] In summary, the stator design of existing water pump motor has the technical problems that poor positioning performance causes motor stator to be easily damaged and shortens the service life of motor. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problems that the stator design of existing water pump motor has poor positioning performance, causes motor stator to be easily damaged and shortens the service life of motor.

[0007] In order to solve the above problems, the utility model provides a kind of motor stator device, including the iron core of annular, the iron core includes integrally connected outer ring part and winding part, winding part integrally connects the inner peripheral wall of outer ring part, winding part projects along radial direction to iron core central axis direction, the outer edge of winding part is provided with coil winding, the insulation support for isolating both between the coil winding and the iron core is provided, the insulation support is provided with the limiting structure along the axial direction of the iron core, the iron core is provided with the matching structure along the axial direction of the iron core in the position corresponding the limiting structure, the limiting structure and matching structure can be slidably matched along the axial direction of the iron core, to guide the axial insertion and position of the iron core and insulation support.

[0008] The utility model provides a kind of motor stator design for internal part positioning optimization, wherein the iron core main body includes integral outer annular structure and internal radial protrusion for the winding of coil winding, insulation support is isolated between coil winding and iron core, and the cooperation of three exists certain cooperation space allowance to facilitate assembly, and the space allowance is not conducive to the long-term use of motor, and the working vibration of water pump motor can cause the clearance between parts to increase, misplacement, cause motor function damage, the design of the utility model is provided with the limiting structure and matching structure that can be slidably matched along the axial direction on the side of iron core and insulation support, the axial assembly of iron core and insulation is guided to place by the structure, the structure can provide additional axial positioning structure of stator, prevent relative rotation, two are to reduce assembly difficulty when assembling, make the relative position of iron core and insulation support easy to align, can be assembled accurately at one time, and therefore the space allowance reserved between the two due to assembly requirement can be minimized as far as possible, further improve the integrity and reliability of motor stator structure.This makes the operation difficulty greatly reduce, and the skill requirement of worker is also reduced accordingly, thereby shortens production cycle, and reduces production cost, on the other hand, from the quality angle, fundamentally eliminates a series of defective product problems caused by the assembly position error of insulation support. Above all, the technical scheme provided by the utility model effectively solves the technical problems that the positioning performance of the stator design of existing water pump motor is poor, and the motor stator is easily damaged, and the service life of motor is shortened.

[0009] As a preferred scheme, the insulation support includes a support ring and a plurality of inner support portions integrally connected, the inner support portions are distributed in a ring shape, the outer side wall of the inner support portions is attached to the inner peripheral wall of the outer ring portion of the iron core, and the shape of the inner support portions matches the winding portion of the iron core and is attached to the outer edge of the winding portion. This design optimizes the form of the insulation support, making it more compatible with the shape of the iron core. The inner support portions are inserted into the side surfaces of the adjacent winding portions of the iron core, and the support ring is attached to the end surfaces at the axial ends of the iron core. The central axis of the support ring is along the radial direction of the outer ring portion. This structure can completely form a spatial isolation between the iron core and the coil winding, avoiding possible contact conduction.

[0010] As a preferred scheme, the limiting structure is a long strip-shaped boss structure integrally connected to the outer side wall of the inner support part of the insulating support, the length direction of the boss structure is parallel to the core axial direction, the matching structure is a sliding groove provided on the inner circumferential wall of the core outer ring part, the length direction of the sliding groove is parallel to the core axial direction, and the two ends of the sliding groove are communicated with the two end faces of the core axial direction.

[0011] The design optimizes the specific structure of the limiting structure and the matching structure, which are distributed along the axial direction of the stator or the core or the insulating support. The limiting structure adopts a boss structure, and the matching structure adopts a sliding groove with corresponding dimensions. The two ends of the sliding groove directly extend to the two end faces of the core. This structure can guide the axial relative sliding and insertion between the insulating support and the core, and has a simple structure and good limiting auxiliary effect.

[0012] As a preferred scheme, the plurality of boss structures are uniformly distributed along the circumferential direction of each inner support part of the insulating support, and the plurality of sliding grooves corresponding to the boss structures are uniformly distributed along the circumferential direction of the inner circumferential wall of the outer ring part of the core. This design optimizes the distribution of the boss and the sliding groove, increases the number to multiple, and distributes along the circumferential direction of the stator or the core or the insulating support. Through such a design, the positioning stability between the insulating support and the core is further improved, and the situation that a single boss sliding groove is easily damaged under pressure is avoided.

[0013] As a preferred scheme, the insulating support includes a first clamping part and a second clamping part clamped with each other along the core axial direction. The first clamping part and the second clamping part each include the support ring and a plurality of integrally connected inner support parts. The insulating support is assembled and fixed to the outer edge of the core winding part through the first clamping part and the second clamping part. The first support and the second support are each provided with the boss structure at the same circumferential position. This design improves the forming and assembly performance of the insulating support. The main structure is formed by two parts clamped with each other along the axial direction. This split structure is convenient for molding using a mold and is suitable for the shape of the core winding part and the matching mode of the coil winding. The two parts are directly clamped to form a surrounding of the core winding part, thereby simplifying the assembly process.

[0014] As a preferred scheme, the clamping end face of each of the first clamping part and the second clamping part is provided with a stepped insertion boss structure, and the first clamping part and the second clamping part are clamped by the insertion boss structures. In order to adapt to the scheme that the two parts are clamped with each other to form the insulating support, a stepped structure is arranged at the end face position of each of the two parts. The structure ensures the alignment of the clamping position and firm combination.

[0015] As a preferred scheme, the outer side wall of the inner support part of the insulating support is integrally connected with a plurality of tenons protruding towards the outer ring part of the iron core, each of the tenons is uniformly distributed along the circumference of the outer ring part of the outer ring part, and the circumferential contour size of the insulating support is increased through the tenons to be in interference fit with the outer ring part of the iron core. In order to improve the combination firmness of the insulating support after being combined and installed with the iron core, the tenons are arranged on the outer edge part of the insulating support, and the positions of the tenons on the outer edge part are preferably located at both ends of the axial direction of the insulating support. The interference fit between the protruding tenons and the inner circumferential surface of the outer ring part of the iron core fills the excess installation space, and further improves the stability of the stator structure.

[0016] The utility model also provides a kind of electric drive water pump motor, including mutually rotating cooperation motor rotor device and motor stator device, the motor stator device is as in any one of above-mentioned motor stator device. Since the motor stator device has above technical effect, therefore the electric drive water pump motor with the motor stator device should also have corresponding technical effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a kind of outer structure schematic diagram of motor stator device;

[0018] Figure 2 For Figure 1 The structure schematic diagram of the iron core of motor stator device;

[0019] Figure 3 For Figure 1 The structure schematic diagram of the first buckling part of the insulating support of motor stator device;

[0020] Figure 4 For Figure 1 The structure schematic diagram of the assembly process of motor stator device;

[0021] Among them, Figures 1-4 Among them:

[0022] 1, insulating support;1-1, first buckling part;1-2, second buckling part;1-3, support ring;1-4, inner support part;1-5, boss structure;1-6, tenon;1-7, insertion station structure;2, coil winding;3, iron core;3-1, outer ring part;3-2, winding part;3-3, sliding slot. DETAILED DESCRIPTION

[0023] To make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0024] Before the working principle of the utility model is described in detail, the description of the utility model needs to be further explained: in the description of the utility model, it should be pointed out that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can be directly connected, can be indirectly connected through intermediate medium, or can be two elements welded connection. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Reference Figures 1-4 The following examples are described as follows, Figure 1 An outer structure schematic view of a motor stator device provided by the utility model is shown in the figure; Figure 2 An Figure 1 A structure schematic view of the core of the motor stator device is shown in the figure; Figure 3 An Figure 1 A structure schematic view of the first buckling part of the insulation support of the motor stator device is shown in the figure; Figure 4 An Figure 1 A structure schematic view of the assembly process of the motor stator device is shown in the figure.

[0027] The embodiment of the utility model provides a kind of motor stator device, including ring-shaped core 3, core 3 includes integrally connected outer ring part 3-1 and winding part 3-2, winding part 3-2 is integrally connected to the inner circumferential wall of outer ring part 3-1, winding part 3-2 projects along the radial direction to the central axis direction of core 3, coil winding 2 is provided on the outer edge of winding part 3-2, insulation support 1 is provided between coil winding 2 and core 3 for isolating both, insulation support 1 is provided with limiting structure along the axial direction of core 3, core 3 is provided with matching structure along the axial direction of core 3 at the position corresponding to limiting structure, limiting structure and matching structure can be slidably matched along the axial direction of core 3, to guide the axial insertion and positioning of core 3 and insulation support 1.

[0028] The utility model provides a kind of motor stator design for internal component positioning optimization, wherein the main body of core 3 includes integral outer annular structure and internal radial protrusion for the winding of coil winding 2, insulation support 1 is isolated between coil winding 2 and core 3, and the mutual cooperation of three exists certain cooperation space allowance in order to facilitate assembly, and the space allowance is not conducive to long-term use of motor, and the working vibration of water pump motor can easily cause the clearance between components to increase, misregistration seriously, causing motor function damage, the design of the utility model is set on the side of core 3 and insulation support 1 and can be axially slidably matched with limiting structure and cooperating structure, core 3 is assembled in place with the structure guiding insulation axially, the structure can provide additional axial positioning structure along stator, prevent relative rotation, two are to reduce assembly difficulty when assembling, make the relative position of core 3 and insulation support 1 easy to align, can be assembled accurately at one time, and therefore the space allowance between the two due to assembly requirement can be minimized as far as possible, further improve the integrity and reliability of motor stator structure. This makes the operation difficulty greatly reduced, and the skill requirement of workers is also reduced accordingly, thereby shortening the production cycle and reducing the production cost. On the other hand, from the quality point of view, a series of defective product problems caused by incorrect assembly position of insulation support 1 are fundamentally eliminated. In summary, the technical scheme provided by the utility model effectively solves the technical problems of poor positioning performance of the existing stator design of water pump motor, which causes the motor stator to be easily damaged and shortens the service life of the motor.

[0029] In the technical scheme provided by the embodiment, the insulation support 1 includes a support ring 1-3 and a plurality of inner support portions 1-4 connected in one piece, the inner support portions 1-4 are distributed in a ring shape, the outer side walls of the inner support portions 1-4 are attached to the inner circumferential walls of the outer ring portion 3-1 of the core 3, the shapes of the inner support portions 1-4 are matched with the winding portions 3-2 of the core 3, and the outer edges of the winding portions 3-2 are attached. This design optimizes the form of the insulation support 1, making it more compatible with the shape of the core 3. The inner support portions 1-4 are inserted into the side surfaces of the adjacent winding portions 3-2 of the core 3, and the support ring 1-3 is attached to the end surfaces of the axial ends of the core 3. The central axis of the support ring 1-3 is along the radial direction of the outer ring portion 3-1. Through such a structure, a space isolation can be formed completely between the core 3 and the coil winding 2, and possible contact conduction can be avoided.

[0030] In the technical scheme provided by the embodiment, the limiting structure is a long strip-shaped boss structure 1-5 connected in one piece to the outer side walls of the inner support portions 1-4 of the insulation support 1, and the length direction of the boss structure 1-5 is parallel to the axial direction of the core 3. The cooperating structure is a sliding groove 3-3 provided in the inner circumferential wall of the outer ring portion 3-1 of the core 3, and the length direction of the sliding groove 3-3 is parallel to the axial direction of the core 3. The two ends of the sliding groove 3-3 are connected to the two end surfaces of the core 3 in the axial direction.

[0031] The design optimizes the specific structure of the limiting structure and the matching structure, and both are distributed along the axial direction of the stator or the core 3 or the insulation support 1. The limiting structure adopts a boss structure 1-5, and the matching structure adopts a size corresponding sliding groove 3-3. The sliding groove 3-3 directly extends to the two end faces of the core 3 at both ends. This structure can guide the axial relative sliding and insertion between the insulation support 1 and the core 3, and has simple structure and good limiting auxiliary effect.

[0032] In the technical scheme provided in this embodiment, the plurality of boss structures 1-5 are uniformly distributed along the circumferential direction of each inner support part 1-4 of the insulation support 1, and the plurality of sliding grooves 3-3 corresponding to the boss structures 1-5 are uniformly distributed along the circumferential direction of the inner circumferential wall of the outer ring part 3-1 of the core 3. The design optimizes the distribution of the boss and the sliding groove 3-3, increases the number to a plurality, and is distributed along the circumferential direction of the stator or the core 3 or the insulation support 1. Through such a design, the positioning stability between the insulation support 1 and the core 3 is further improved, and the situation that a single boss sliding groove 3-3 is easily damaged under pressure is avoided.

[0033] In the technical scheme provided in this embodiment, the insulation support 1 includes a first clamping part 1-1 and a second clamping part 1-2 that are clamped to each other along the axial direction of the core 3. The insulation support 1 is assembled and fixed to the outer edge of the winding part 3-2 of the core 3 through the first clamping part 1-1 and the second clamping part 1-2. The first support and the second support are both provided with the boss structure 1-5 at the same circumferential position. The design improves the forming and assembly performance of the insulation support 1. The main body structure is formed by two parts clamped to each other along the axial direction. This split structure is convenient for molding using a mold, and is suitable for the shape of the winding part 3-2 of the core 3 and the matching mode of the coil winding 2. The winding part 3-2 of the core 3 is directly surrounded by the clamping of the two parts, which simplifies the assembly process.

[0034] In the technical scheme provided in this embodiment, the clamping end face of each of the first clamping part 1-1 and the second clamping part 1-2 is provided with a stepped insertion seat structure 1-7, and the first clamping part 1-1 and the second clamping part 1-2 are inserted and clamped through the respective insertion seat structures 1-7. In order to adapt to the scheme that the two parts are clamped to each other to form the insulation support 1, a stepped structure is arranged at the end face position of each of the two parts. The structure ensures the alignment of the clamping position and firm combination.

[0035] In the technical scheme provided by the embodiment, the outer side wall of the inner support part 1-4 of the insulating support 1 is integrally connected with a plurality of tenons 1-6 protruding towards the outer ring part 3-1 of the iron core 3, each tenon 1-6 is uniformly distributed along the circumference of the outer ring part 3-1, the circumferential contour size of the insulating support 1 is increased through the tenons 1-6, and the insulating support 1 is in interference fit with the outer ring part 3-1 of the iron core 3. In order to improve the firmness of the insulating support 1 after being combined and installed with the iron core 3, the protruding tenons 1-6 are arranged on the outer side wall of the inner support part 1-4 of the insulating support 1, and the positions of the tenons 1-6 on the outer ring part 3-1 are preferably located at both ends of the axial direction of the insulating support 1, the protruding tenons 1-6 are in interference fit with the inner circumferential surface of the outer ring part 3-1 of the iron core 3 to fill the excess installation space, and the stability of the stator structure is further improved.

[0036] The utility model also provides a kind of electric drive water pump motor, including electronic rotor device and motor stator device, motor stator device is as any one embodiment in above-mentioned motor stator device. Since the above motor stator device has above technical effect, therefore the electric drive water pump motor with the motor stator device also should have corresponding technical effect.

[0037] Although the utility model discloses as above, the protection scope of the utility model disclosed is not limited to this only. The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A motor stator device comprising a ring-shaped core (3) comprising an outer ring portion (3-1) and a winding portion (3-2) integrally connected, the winding portion (3-2) being integrally connected to an inner peripheral wall of the outer ring portion (3-1), the winding portion (3-2) being convex in a radial direction toward a central axis direction of the core (3), a coil winding (2) being provided at an outer edge of the winding portion (3-2), characterized in that, The coil winding (2) and the iron core (3) are provided with an insulation support (1) for isolating the two, the insulation support (1) is provided with a limiting structure along the axial direction of the iron core (3), the iron core (3) is provided with a matching structure along the axial direction of the iron core (3) at the position corresponding to the limiting structure, and the limiting structure and the matching structure are slidably matched along the axial direction of the iron core (3) to guide the axial insertion and positioning of the iron core (3) and the insulation support (1).

2. The motor stator arrangement of claim 1, wherein, The insulation support (1) comprises a support ring (1-3) and a plurality of inner support portions (1-4) integrally connected, the inner support portions (1-4) are distributed in a ring shape, the outer side wall of the inner support portions (1-4) is fitted to the inner circumferential wall of the outer ring portion (3-1) of the iron core (3), and the shape of the inner support portions (1-4) is matched with the winding portion (3-2) of the iron core (3) and is fitted to the outer edge of the winding portion (3-2).

3. The motor stator arrangement of claim 2, wherein, The limiting structure is a long strip-shaped boss structure (1-5) integrally connected to the outer side wall of the inner support portion (1-4) of the insulation support (1), the length direction of the boss structure (1-5) is parallel to the axial direction of the iron core (3), and the matching structure is a sliding groove (3-3) provided on the inner circumferential wall of the outer ring portion (3-1) of the iron core (3), the length direction of the sliding groove (3-3) is parallel to the axial direction of the iron core (3), and the two ends of the sliding groove (3-3) are communicated with the two end faces of the axial direction of the iron core (3).

4. The motor stator apparatus of claim 3, wherein, The inner support portions (1-4) of the insulation support (1) are uniformly distributed with a plurality of boss structures (1-5) along the circumferential direction, and the inner circumferential wall of the outer ring portion (3-1) of the iron core (3) is uniformly distributed with a plurality of sliding grooves (3-3) corresponding to the boss structures (1-5) along the circumferential direction.

5. The motor stator apparatus of claim 3, wherein, The insulation support (1) comprises a first clamping portion (1-1) and a second clamping portion (1-2) clamped to each other along the axial direction of the iron core (3), the first clamping portion (1-1) and the second clamping portion (1-2) each comprise the support ring (1-3) and a plurality of inner support portions (1-4), the insulation support (1) is assembled and fixed to the outer edge of the winding portion (3-2) of the iron core (3) through the first clamping portion (1-1) and the second clamping portion (1-2), and the first clamping portion (1-1) and the second clamping portion (1-2) are each provided with the boss structure (1-5) at the same circumferential position.

6. The motor stator apparatus of claim 5, wherein, The clamping end faces of the first clamping portion (1-1) and the second clamping portion (1-2) are each provided with a stepped insertion boss structure (1-7), and the first clamping portion (1-1) and the second clamping portion (1-2) are inserted and clamped through the respective insertion boss structures (1-7).

7. The motor stator apparatus of claim 2, wherein, The outer side wall of the inner support portion (1-4) of the insulation support (1) is integrally connected with a plurality of tenons (1-6) protruding towards the outer ring portion (3-1) of the iron core (3), the tenons (1-6) are uniformly distributed along the circumferential direction of the outer ring portion (3-1), and the circumferential contour size of the insulation support (1) is increased through the tenons (1-6) to be interference-fitted with the outer ring portion (3-1) of the iron core (3).

8. An electrically driven water pump motor comprising a motor rotor arrangement and a motor stator arrangement cooperating, characterized in that The motor stator device is as claimed in any of claims 1-7. The motor stator device is as claimed in any of claims 1-7.

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