Stator terminal insulation joint device and electric water pump motor

Abstract

The utility model provides a stator terminal insulation joint device which comprises a joint seat integrally formed and connected with a winding support, the joint seat is of a shell structure with one end provided with an opening, a contact piece is arranged in the joint seat, and the contact piece is connected with a coil winding wire and used for supplying power to a coil winding through an external wire. The connector seat is elastically matched with an insulating cover plate in an inserted mode to close an opening of the connector seat, the insulating cover plate is provided with a reserved wiring hole with the caliber matched with the size of an external connection wire, and the opening position of the connector seat is closed through the insulating cover plate to protect the circuit conduction position in the connector seat. The insulating cover plate is provided with the reserved wiring hole with the aperture matched with the size of the external wiring, the external wiring is limited and fixed, traction caused by working vibration is avoided, impurities can be effectively prevented from entering the wiring conduction position, and the situation of electric leakage or short circuit caused by dust and impurities is avoided. The utility model also provides an electric water pump motor comprising the stator terminal insulation joint device.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump equipment technical field, specifically, relate to a stator wiring terminal insulation joint 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 the 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, 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 arranged in annular stator, the circuit structure design is more stable, the relatively weak position of this design is the connection head of coil winding, the main problem reason is that the contact conductivity of this position and the insulation requirement of motor whole exist certain contradiction, the joint position of stator coil is prone to loose due to motor working vibration in the long-term operation process of motor, to cause motor operation failure;And in addition, impurities are also easy to enter the joint position to cause electric leakage, cause the insulation problem of motor whole, seriously affect the safe operation of system.

[0004] In summary, the stator joint position of existing water pump motor is prone to loose and insulation failure. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem that the stator joint position of existing water pump motor is prone to loose and insulation failure.

[0006] To solve the above problem, the utility model provides a kind of stator wiring terminal insulation joint device, for the stator assembly of electric drive water pump motor, the stator assembly includes iron core, coil winding and the winding support between the iron core and coil winding, the stator wiring terminal insulation joint device includes the joint seat integrally formed with the winding support connection, the joint seat is the shell structure of one end setting opening, the joint seat is provided with contact piece, the contact piece is wired with the coil winding and is conducted, for coil winding is powered by external wiring;The joint seat is elastically inserted with the insulating cover plate to close the opening of joint seat, the insulating cover plate is provided with the reserved wiring hole of the size of the caliber adaptation external wiring.

[0007] The utility model provides a novel motor stator's coil winding's joint design, wherein the integrated connecting joint seat is arranged on the winding support for supporting between the coil winding and the stator core, the inside is provided with the contact piece for the coil winding external electric, in order to protect the butt joint position of contact piece and external wire, sets up the sealing structure of insulating cover plate, the opening position of closed joint seat is closed to protect the circuit conduction position in the joint seat, in order to the smooth access of external wire, sets up the reserved wiring hole of aperture matching the size of external wire on insulating cover plate, is used for the wiring of external wire, because the size cooperation of reserved wiring hole is matched with the size of external wire, can provide certain location fixing effect for external wire, avoids the pull of motor operation vibration, provides protection to the conduction position structure, and can effectively avoid the impurity into wiring conduction position, effectively avoids the leakage or short circuit condition caused by dust impurity, the stator wiring end insulation joint device structure is simple, and the internal wiring conduction position protection performance is good, effectively solves the technical problem that the stator joint position of existing water pump motor is loose and insulation failure.

[0008] As a preferred scheme, a plurality of the contact pieces are arranged side by side in the joint seat, and a comb-shaped conductive plug plate is further arranged in the joint seat, the conductive plug plate is in plug-in cooperation with each of the contact pieces, the conductive plug plate is used for connecting the external wire, and the length of the conductive plug plate is greater than the maximum aperture of the reserved wiring hole. This design optimizes the conduction cooperation structure between the external wire and the contact pieces, the number of the contact pieces is adapted to the coil winding distribution structure, each contact piece is connected in conduction with the wire head of a coil winding unit, therefore, a plurality of the contact pieces are arranged side by side in the joint seat, and the butt joint structure of the external wire and each contact piece is specially set for adapting to the structure, that is, the conductive plug plate, the structure is in the form of a comb, each comb tooth is in plug-in cooperation with a contact piece, the structure effectively simplifies the wiring structure, reduces the assembly difficulty, and the length of the conductive plug plate is greater than the aperture of the reserved wiring hole, the conductive plug plate can be blocked in the joint seat by the reserved hole, and the structure protection of the joint by the insulating cover plate is further enhanced.

[0009] As a preferred scheme, the insulating cover plate comprises a cover plate part and a hook-shaped plug which are integrally formed, the cover plate part is in the form of a half-open box body, the inner cavity shape of the cover plate is matched with the outer contour shape of the opening side of the joint seat, the reserved wiring hole is a through hole structure arranged on the top end face of the cover plate part, the hook-shaped plug is located at one end of the cover plate part away from the reserved wiring hole, and the outer side of the joint seat is provided with a plug-in recess groove matched with the hook-shaped plug. This design optimizes the structure of the insulating cover plate, the main structure is the cover plate part which is in the form of a half-open box body, the inner cavity shape of the box body is matched with the joint seat, the stability of closing the opening end of the joint group is ensured, the cover plate part is integrally connected with the hook-shaped plug, the structure has a certain elasticity, the insulating cover plate and the joint seat can be simply installed through the elastic cooperation with the plug-in recess groove on the joint seat.

[0010] As a preferred scheme, the inner side wall of the cover plate part is integrally connected with a protruding limiting boss, a limiting groove is arranged at the position corresponding to the limiting boss on the outer side of the joint seat, and the cover plate part is aligned with the opening position of the joint seat through the sliding fit of the limiting boss and the limiting groove. This design further optimizes the cooperation between the insulating cover plate and the joint seat, makes the assembly docking action of the two more accurate and stable, and the limiting groove is arranged on the outer side of the joint seat, the length direction of the limiting groove is the insertion action direction of the insulating cover plate and the joint group, and the limiting boss is arranged at the corresponding position on the inner side of the cover plate part of the insulating cover plate, and the limiting boss and the limiting groove are in sliding fit, and the insertion fixing action of the insulating cover plate is guided through the structure.

[0011] As a preferred scheme, a plurality of wire slots are arranged on the side wall of the joint seat towards the inside of the stator, the number and position of the wire slots correspond to the number and position of the contact pieces respectively, and the wire slots are used for accommodating the wire heads of the coil winding to pass through the side wall of the joint seat and be connected with the contact pieces. This design optimizes the docking of the contact pieces in the joint seat and the wire heads of the coil winding, and the wire slots are arranged on the side wall of the inside of the joint seat, i.e. towards the inside of the stator. This structure can make the wire heads of the coil winding pass through the side wall of the joint seat to enter the inside and dock with the contact pieces, and has the advantages of simple structure and further improved effect of stabilizing the docking wire end.

[0012] As a preferred scheme, the contact piece is a metal piece bent in an shape, and the comb-shaped protruding part of the conductive plug-in plate is in close abutment with the bent recessed part of the contact piece. This design provides a preferred structure design of the contact piece, and the bent structure in the shape can guarantee stable abutment docking with the conductive plug-in plate.

[0013] As a preferred scheme, the winding support is annular, two joint seats are connected to the circular ring end face of the winding support, and the joint seats are located at the two ends of the winding support in the radial direction. This design is a targeted structure design for a two-phase circuit, and the two joint groups and the contact pieces in the joint groups are respectively used for docking the live wire and the zero wire of the external wire.

[0014] The utility model also provides a kind of electric drive water pump motor, including rotor assembly and stator assembly, and the stator assembly includes the stator terminal insulation joint device in any one of the above. Since the above-mentioned stator terminal insulation joint device has the above technical effects, the electric drive water pump motor with the stator terminal insulation joint device should also have the corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a kind of stator terminal insulation joint device and the overall structure schematic diagram of motor stator;

[0016] Figure 2 For Figure 1 Partial enlarged structural schematic view of the stator terminal insulation joint device;

[0017] Figure 3 For Figure 2 Structural schematic view of the other side of the stator terminal insulation joint device;

[0018] Figure 4 For Figure 3 Exploded structural schematic view of the stator terminal insulation joint device;

[0019] Figure 5 For Figure 4 Structural schematic view of the insulation cover plate of the stator terminal insulation joint device;

[0020] Wherein, Figures 1-5 In which:

[0021] 1, core, 2, coil winding; 3, winding support; 4, joint seat; 4-1, plug-in recess; 4-2, wire slot; 4-3, limiting groove; 5, insulation cover plate; 5-1, cover plate part; 5-2, hook-shaped plug; 5-3, reserved wiring hole; 5-4, limiting boss; 6, conductive plugboard; 7, contact piece. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following will further describe the utility model in combination with specific embodiments.

[0023] 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 needs to be explained 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 based on 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 indicated device or element 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 the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, need explanation, unless another explicit provision and limitation, term '' install '' '' set up have '' '' connection '' and the like, should do broad sense understanding, for example '' connection '', can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, can be direct connection, can pass through intermediate medium indirectly connect, also can be two elements welding connection, for ordinary skilled person in the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0025] Reference Figures 1-5 The following examples are described as follows, Figure 1 The utility model provides a kind of stator terminal insulation joint device and the overall structure schematic diagram of motor stator for the utility model; Figure 2 For Figure 1 The partial enlarged structure schematic diagram of stator terminal insulation joint device in it; Figure 3 For Figure 2 The structure schematic diagram of another side of stator terminal insulation joint device in it; Figure 4 For Figure 3 The exploded structure schematic diagram of stator terminal insulation joint device in it; Figure 5 For Figure 4 The insulation cover plate structure schematic diagram of stator terminal insulation joint device in it.

[0026] The embodiment of the utility model provides a kind of stator terminal insulation joint device, for the stator assembly of electric drive water pump motor, stator assembly includes core 1, coil winding 2 and the winding support 3 between core 1 and coil winding 2, stator terminal insulation joint device includes the joint seat 4 integrally formed with winding support 3 connection, joint seat 4 is the shell structure of one end and is provided with opening, contact piece 7 is provided in joint seat 4, contact piece 7 is wired and is conducted with coil winding 2, for coil winding 2 is powered by external wire;Joint seat 4 is elastically inserted and is matched with insulation cover plate 5 to close the opening of joint seat 4, and insulation cover plate 5 is provided with the reserved wiring hole 5-3 of the caliber of the size of external wire adaptation.

[0027] The utility model provides a novel motor stator's coil winding 2's joint design, wherein the integrated connection joint seat 4 is arranged on the winding support 3 for supporting between the coil winding 2 and the stator core 1, the contact piece 7 for connecting the electricity of coil winding 2 is arranged inside, in order to protect the butt joint position of contact piece 7 and external wire, the sealing structure of insulating cover plate 5 is arranged, the opening position of joint seat 4 is closed to protect the circuit conduction position in joint seat 4, in order to the smooth access of external wire, the reserved wiring hole 5-3 of aperture matching external wire size is arranged in insulating cover plate 5, is used for the wiring of external wire, because the size cooperation external wire size of reserved wiring hole 5-3 can provide certain limit fixed effect to external wire, avoids the pull of motor working vibration, provides protection to the conduction position structure, and can effectively avoid the impurity into wiring conduction position, effectively avoids the leakage or short circuit condition caused by dust impurity, the stator wiring end insulation joint device structure simple internal wiring conduction position protection performance is good, effectively solves the technical problem that the stator joint position of existing water pump motor is loose and the insulation failure.

[0028] In the technical scheme provided by the embodiment, the plurality of contact pieces 7 are arranged side by side in the joint seat 4, and the comb-shaped conductive plugboard 6 is further arranged in the joint seat 4. The conductive plugboard 6 is in plug-in cooperation with each contact piece 7, and the conductive plugboard 6 is used for connecting the external wire. The length of the conductive plugboard 6 is greater than the maximum aperture of the reserved wiring hole 5-3. This design optimizes the conduction cooperation structure between the external wire and the contact piece 7. The number of the contact pieces 7 is adapted to the distribution structure of the coil winding 2. Each contact piece 7 is connected in conduction with the wire head of one coil winding 2 unit. Therefore, the plurality of contact pieces 7 are arranged side by side in the joint seat 4. The butt joint structure of the external wire and each contact piece 7 is specially set for adapting to this structure, that is, the conductive plugboard 6. The structure is in the form of comb teeth. Each comb tooth protrusion is in plug-in cooperation with one contact piece 7. This structure effectively simplifies the wiring structure and reduces the assembly difficulty. At the same time, the length of the conductive plugboard 6 is greater than the aperture of the reserved wiring hole 5-3. The conductive plugboard 6 can be blocked and limited in the joint seat 4 by the reserved hole, further enhancing the structure protection of the joint by the insulating cover plate 5.

[0029] In the technical scheme provided by the embodiment, the insulating cover plate 5 comprises a cover plate part 5-1 and a hook-shaped plug 5-2 which are integrally connected, the cover plate part 5-1 is in the shape of a half-open box, the inner cavity of the cover plate is matched with the outer contour shape of the opening side of the connector seat 4, the reserved wiring hole 5-3 is a through hole structure arranged on the top end surface of the cover plate part 5-1, and the hook-shaped plug 5-2 is located at one end of the cover plate part 5-1 away from the reserved wiring hole 5-3. The outer side surface of the connector seat 4 is provided with a plug-in recess 4-1 which is matched with the hook-shaped plug 5-2. The design optimizes the structure of the insulating cover plate 5, the main body is the cover plate part 5-1 which is in the shape of a half-open box, the inner cavity of the box is matched with the connector seat 4, thereby ensuring the stability of the opening end of the connector group, the cover plate part 5-1 is integrally connected with the hook-shaped plug 5-2, the structure has a certain elasticity, and the hook-shaped plug 5-2 is matched with the plug-in recess 4-1 on the connector seat 4 through the elastic effect, so that the installation of the insulating cover plate 5 and the connector seat 4 can be simply realized.

[0030] In the technical scheme provided by the embodiment, the inner side wall of the cover plate part 5-1 is integrally connected with a protruding limiting boss 5-4, the outer side surface of the connector seat 4 is provided with a limiting groove 4-3 at a position corresponding to the limiting boss 5-4, and the cover plate part 5-1 is guided to be aligned with the opening position of the connector seat 4 through the sliding cooperation of the limiting boss 5-4 and the limiting groove 4-3. The design further optimizes the cooperation between the insulating cover plate 5 and the connector seat 4, so that the assembly and connection of the two are more accurate and stable. The outer side surface of the connector seat 4 is provided with the limiting groove 4-3, the length direction of the limiting groove 4-3 is the plug-in action direction of the insulating cover plate 5 and the connector group, and the inner side surface of the cover plate part 5-1 of the insulating cover plate 5 is provided with the limiting boss 5-4 at a corresponding position, the limiting boss 5-4 is slidably matched with the limiting groove 4-3, and the plug-in and fixing action of the insulating cover plate 5 is guided through the structure.

[0031] In the technical scheme provided by the embodiment, the connector seat 4 is provided with a plurality of wire grooves 4-2 on the side wall facing the inside of the stator, the number and position of the wire grooves 4-2 correspond to the number and position of the contact pieces 7, and the wire grooves 4-2 are used to accommodate the wire heads of the coil winding 2 to pass through the side wall of the connector seat 4 and be connected with the contact pieces 7. The design optimizes the connection of the wire heads of the coil winding 2 and the contact pieces 7 in the plug-in seat. The wire grooves 4-2 are arranged on the side wall of the inside of the stator of the connector seat 4, so that the wire heads of the coil winding 2 can pass through the side wall of the connector seat 4 and be connected with the contact pieces 7 in the inside, which is simple in structure and can further improve the stability of the connected wire end.

[0032] In the technical scheme provided by the embodiment, the contact piece 7 is a metal sheet bent in the shape of a character, and the comb-shaped protruding part of the conductive plug-in plate 6 is tightly abutted with the bent recessed part of the contact piece. The design provides a preferred structure design of the contact piece 7, and the bending structure in the shape of a character can ensure stable abutment and connection with the conductive plug-in plate 6.

[0033] In the technical scheme provided by the embodiment, the winding support 3 is annular, two joint bases 4 are connected to the annular end face of the winding support 3, and the joint bases 4 are respectively located at the two ends in the radial direction of the winding support 3. The design is a targeted structural design for a two-phase circuit, and two joint groups and the contact pieces 7 in each joint group are respectively used for connecting the live wire and the zero wire of the external wire.

[0034] The utility model discloses still provide a kind of electric drive water pump motor, including rotor assembly and stator assembly, stator assembly includes the insulation joint device of stator terminal in any one above. Since the above-mentioned stator terminal insulation joint device has the above technical effect, therefore, the electric drive water pump motor with the stator terminal insulation joint device also should have corresponding technical effect.

[0035] 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 stator terminal insulation joint device for a stator assembly of an electrically driven water pump motor, said stator assembly comprising a core (1), a coil winding (2) and a winding support (3) between the core (1) and the coil winding (2), characterized in that The stator terminal insulation joint device comprises a joint seat (4) integrally connected with the winding support (3), the joint seat (4) is in a shell structure with an opening at one end, a contact piece (7) is arranged in the joint seat (4), the contact piece (7) is in conduction with the coil winding (2) for the coil winding (2) to be powered by an external wire; the joint seat (4) is elastically inserted and matched with an insulation cover plate (5) to close the opening of the joint seat (4), and the insulation cover plate (5) is provided with a reserved wire hole (5-3) with a diameter matched with the size of the external wire.

2. The stator terminal insulation joint apparatus of claim 1, wherein, A plurality of contact pieces (7) are arranged side by side in the joint seat (4), and a conductive plug-in plate (6) in the shape of a comb is further arranged in the joint seat (4), the conductive plug-in plate (6) is in plug-in cooperation with each contact piece (7), the conductive plug-in plate (6) is used for connecting the external wire, and the length of the conductive plug-in plate (6) is greater than the maximum diameter of the reserved wire hole (5-3).

3. The stator terminal insulation joint apparatus of claim 2, wherein, The insulation cover plate (5) comprises a cover plate part (5-1) and a hook-shaped plug (5-2) integrally connected, the cover plate part (5-1) is in the shape of a half-open box, the inner cavity shape of the cover plate is matched with the outer contour shape of the opening side of the joint seat (4), the reserved wire hole (5-3) is a through hole structure arranged on the top end face of the cover plate part (5-1), the hook-shaped plug (5-2) is located at one end of the cover plate part (5-1) away from the reserved wire hole (5-3), and the outer side of the joint seat (4) is provided with a plug-in recess (4-1) matched with the hook-shaped plug (5-2).

4. The stator terminal insulation joint apparatus of claim 3, wherein, The inner side wall of the cover plate part (5-1) is integrally connected with a protruding limiting boss (5-4), the outer side of the joint seat (4) is provided with a limiting groove (4-3) corresponding to the limiting boss (5-4), and the cover plate part (5-1) is aligned with the opening position of the joint seat (4) through the sliding cooperation of the limiting boss (5-4) and the limiting groove (4-3).

5. The stator terminal insulation joint apparatus of claim 2, wherein, A plurality of wire grooves (4-2) are arranged on the side wall of the joint seat (4) towards the inside of the stator, the number and position of the wire grooves (4-2) correspond to the number and position of the contact pieces (7) respectively, and the wire grooves (4-2) are used for accommodating the wire ends of the coil winding (2) to pass through the side wall of the joint seat (4) and be connected with the contact pieces (7).

6. The stator terminal insulation joint apparatus of claim 2, wherein, The contact piece (7) is a metal sheet bent in the shape of a character, and the comb-shaped protruding part of the conductive plug-in plate (6) is in close abutment with the bent recessed part of the contact piece (7).

7. The stator terminal insulation joint apparatus of claim 2, wherein, The winding support (3) is in the shape of a ring, and two joint seats (4) are connected to the circular end face of the winding support (3), and the joint seats (4) are respectively located at the two ends of the winding support (3) in the radial direction.

8. An electrically driven water pump motor comprising a rotor assembly and a stator assembly, characterized in that, The stator assembly comprises the stator terminal insulation joint device according to any one of claims 1-7.

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