CN210273759U

CN210273759U - Stator assembly of stepping motor

Info

Publication number: CN210273759U
Application number: CN201921693048.XU
Authority: CN
Inventors: 施佰清
Original assignee: Ningbo Wanjia Electrical Appliance Co ltd
Current assignee: Ningbo Wanjia Electrical Appliance Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-04-07
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to the technical field of stepping motors, in particular to a stator assembly of a stepping motor, which comprises a stator shell, an electric control board, a positioning frame and an inserting part, and also comprises at least one limit salient point arranged on the upper surface of the stator shell, an insulating framework matched and connected with the inner wall of the stator shell, a stator polar plate which is respectively connected with the inner wall of the insulating framework and is oppositely arranged at the bottom, an enameled wire wound on the insulating framework, a load terminal which is connected with the insulating framework and leads out the stator shell, and a grounding terminal which is connected with the stator shell and is arranged with the tail end parallel to the load terminal, wherein the tail end of the load terminal is matched and connected with the electric control board, the structure of the utility model has reasonable design, the grounding terminal connected with the upper surface of the stator shell is convenient for grounding when the stepping motor is used, the safety of the stepping motor is improved, the stability of the load terminal structure is enhanced, and the use performance of the stepping motor is improved.

Description

Stator assembly of stepping motor

Technical Field

The utility model relates to a step motor technical field especially relates to a step motor's stator assembly.

Background

The electronic expansion valve is a throttle valve driven by a stepping motor, is already popularized and used in new energy automobiles, and generally adopts a unipolar control method using constant-voltage driving: each winding has two phases, the controller energizes the windings according to a preset time sequence through leads, the unipolar driving generally adopts a four-phase eight-beat or four-item four-beat excitation mode, so that the electronic expansion valve rotates according to the required step sequence, and further the refrigerating liquid supply amount of a refrigerating system of an air conditioner in the new energy automobile is controlled.

But step motor among the electronic expansion valve among the prior art is because structural constraint, there is not the earth connection in the stator assembly, easily increase step motor's use risk, and during load terminal injection moulding in the stator assembly, generally can cup joint on the main part board of mould, but load terminal is from the mode of up assembling down, and do not fix a position well, the mode of assembling leads to load terminal and the automatically controlled board in the motor to be connected very easily and produces displacement about, simultaneously because the enameled wire on the skeleton in the stator assembly is connected with load terminal, when load terminal assembly structure is unstable, make the enameled wire be dragged and lead to the condition of deformation, step motor's performance has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses shortcoming and weak point to step motor exists among the prior art provides a load terminal stable in structure, convenient to load terminal location, add ground terminal, the high, the practicality strong step motor of security in utilization.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the utility model provides a step motor's stator assembly, including stator housing, connect the automatically controlled board in stator housing, the locating rack of being connected with the cooperation of stator housing bottom and the grafting portion of setting at the stator housing lateral part, still including being equipped with a spacing bump at the stator housing upper surface at least, the insulating frame of being connected with the cooperation of stator housing inner wall, connect respectively at the relative stator polar plate that sets up in insulating frame inner wall and bottom, the enameled wire of winding on insulating frame, connect on insulating frame and draw stator housing's load terminal and connect on stator housing and tail end and load terminal parallel arrangement's ground terminal, load terminal tail end is connected with the cooperation of automatically controlled board.

Preferably, the method comprises the following steps: the front end of the grounding terminal is provided with a grounding positioning sheet which is connected with the stator shell in a matching mode, the grounding positioning sheet and the grounding terminal are integrally formed, and a positioning hole which is connected with the stator shell in a matching mode is formed in the grounding positioning sheet.

Preferably, the method comprises the following steps: the insulating skeleton includes the skeleton body, sets up location platform, the plastics boss of fixed connection on the location platform and the direction muscle of connection between skeleton body and location platform on the skeleton body side by side, location platform and skeleton body cooperation fixed connection, the end winding of drawing forth of enameled wire is on the location platform, the load terminal is connected with the cooperation of location platform.

The utility model discloses beneficial effect: the utility model has the advantages of reasonable design, through the ground terminal at stator case upper surface connection, ground connection when making things convenient for step motor to use improves step motor's security, and the setting of spacing bump can effectively fix a position the installation of load terminal moreover, strengthens the stability of load terminal structure, has improved step motor's performance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

Fig. 3 is a schematic view of the structure of the insulating framework of the present invention.

Reference numerals: 1. a stator housing; 2. an electric control board; 3. a positioning frame; 4. a plug-in part; 5. limiting salient points; 6. an insulating framework; 7. a stator plate; 8. enamelled wires; 9. a load terminal; 10. a ground terminal; 11. a grounding positioning sheet; 12. positioning holes; 60. a skeleton body; 61. a positioning table; 62. a plastic boss; 63. and (5) guiding ribs.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 3, a stator assembly of a stepping motor includes a stator housing 1, an electric control board 2 connected in the stator housing 1, a positioning frame 3 connected to a bottom end of the stator housing 1 in a matching manner, and an inserting portion 4 disposed at a side portion of the stator housing 1, and further includes at least one limiting protrusion 5 disposed on an upper surface of the stator housing 1, an insulating frame 6 connected to an inner wall of the stator housing 1 in a matching manner, a stator pole plate 7 respectively connected to an inner wall of the insulating frame 6 and having a bottom portion facing each other, an enamel wire 8 wound on the insulating frame 6, a load terminal 9 connected to the insulating frame 6 and leading out of the stator housing 1, and a ground terminal 10 connected to the stator housing 1 and having a tail end parallel to the load terminal 9, wherein the tail end of the load terminal 9 is connected to the electric control; preferably, the limit salient point 5 is arranged on the stator shell 1, when the injection molding is carried out, the load terminal 9 can take the limit salient point 5 as a reference point, so that the structural stability of the load terminal 9 is ensured, and when the load terminal 9 is assembled with the insulating framework 6, the pin inserting mode of the load terminal 9 is from top to bottom, so that the looseness cannot be generated during the assembly; the enameled wire 8 is wound on the insulating framework 6 and then electrically connected with the load terminal 9 through the insulating framework 6, and the load terminal 9 is connected with the electric control board 2, so that the action of the stator is conveniently controlled; the grounding terminal 10 is directly connected with the electronic shell, so that the contact resistance is controlled to be less than 1 omega, and the use safety of the stepping motor is improved; the positioning frame 3 is conveniently connected with a valve body of the electronic expansion valve, so that the reasonability of a mounting structure of the stepping motor is ensured; through the ground terminal 10 at 1 surface connection of stator housing, ground connection when making things convenient for step motor to use improves step motor's security, and relative positioning can be effectively carried out to load terminal 9's installation to setting up of spacing bump 5 moreover, and the stability of reinforcing load terminal 9 structure has improved step motor's performance.

In this embodiment, the front end of ground terminal 10 is equipped with the ground connection spacer 11 of being connected with stator housing 1 cooperation, ground connection spacer 11 sets up with ground terminal 10 integrated into one piece, set up the locating hole 12 of being connected with stator housing 1 cooperation on the ground connection spacer 11, locating hole 12 on the ground connection spacer 11 is convenient to be connected with stator housing 1 through screw or round pin axle, strengthens ground terminal 10 mounting structure's rationality, ground terminal 10's tail end can insert automatically controlled board 2 with load terminal 9 parallel arrangement, guarantees the security that automatically controlled board 2 used.

In this embodiment, the insulating framework 6 includes a framework body 60, a positioning table 61 arranged on the framework body 60 in parallel, a plastic boss 62 fixedly connected to the positioning table 61, and a guide rib 63 connected between the framework body 60 and the positioning table 61, the positioning table 61 is fixedly connected to the framework body 60 in a matching manner, a leading-out end of the enameled wire 8 is wound on the positioning table 61, the load terminal 9 is connected to the positioning table 61 in a matching manner, the insulating framework 6 is respectively provided with an upper insulating framework and a lower insulating framework in the stator housing 1, and the positioning pole plates are also connected in a close-fitting manner corresponding to the inner wall of the insulating framework 6 and are connected oppositely through the bottom ends of the positioning pole plates, so that the compactness of the internal; the positioning table 61 is arranged so that the leading-out end of the enameled wire 8 can be wound on the positioning table 61 to realize the purpose of electrical connection with the load terminal 9, and the plastic boss 62 can prevent the enameled wire 8 from being over-welded during welding; the setting up of direction muscle 63 can protect on the one hand can not be dragged because of warping when 8 rethread moulds plastics and lead to the performance bad, increases the joint strength between skeleton body 60 and the location platform 61, and on the other hand can adapt to 8 enameled wires and cross the line along direction muscle 63, ensures not broken string under the laminating state.

The utility model discloses an earth terminal 10 at 1 surface connection of stator housing, make things convenient for step motor ground connection when using, improve step motor's security, and spacing bump 5's setting can effectively fix a position load terminal 9's installation, strengthen the stability of load terminal 9 structure, direction muscle 63 between skeleton body 60 and location platform 61 simultaneously, can effectively increase the joint strength between skeleton body 60 and the location platform 61, also can adapt to enameled wire 8 and cross the line along direction muscle 63, ensure under the laminating state can not the broken string, step motor's performance has been improved.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a step motor's stator assembly, includes stator housing, connects automatically controlled board in stator housing, the locating rack of being connected with the cooperation of stator housing bottom and sets up the grafting portion at the stator housing lateral part, its characterized in that: the motor stator comprises a stator shell, and is characterized by further comprising at least one limiting salient point arranged on the upper surface of the stator shell, an insulating framework connected with the inner wall of the stator shell in a matched mode, a stator pole plate connected with the inner wall of the insulating framework and the bottom of the insulating framework oppositely, an enameled wire wound on the insulating framework, a load terminal connected to the insulating framework and led out of the stator shell, and a ground terminal connected to the stator shell and arranged with the tail end parallel to the load terminal, wherein the tail end of the load terminal is connected with an electric control board in.

2. A stator assembly of a stepping motor according to claim 1, wherein: the front end of the grounding terminal is provided with a grounding positioning sheet which is connected with the stator shell in a matching mode, the grounding positioning sheet and the grounding terminal are integrally formed, and a positioning hole which is connected with the stator shell in a matching mode is formed in the grounding positioning sheet.

3. A stator assembly of a stepping motor according to claim 1, wherein: the insulating skeleton includes the skeleton body, sets up location platform, the plastics boss of fixed connection on the location platform and the direction muscle of connection between skeleton body and location platform on the skeleton body side by side, location platform and skeleton body cooperation fixed connection, the end winding of drawing forth of enameled wire is on the location platform, the load terminal is connected with the cooperation of location platform.