CN219535752U - Fool-proof structure of centrally-mounted motor - Google Patents

Abstract

The utility model belongs to the technical field of motors, and discloses a foolproof structure of a centrally-mounted motor, which comprises a casing, a stator core, an insulating framework and a PCB (printed Circuit Board), wherein three limit grooves are axially formed in the inner side wall of the casing, the three limit grooves are different in size, three limit protrusions matched with the limit grooves are axially formed in the outer side wall of the stator core, three matching blocks matched with the limit protrusions are integrally formed in the edge of the insulating framework, and three notches matched with the matching blocks are formed in the edge of the PCB. The fool-proof structure ensures the absolute consistency of products, has obvious fool-proof effect, does not cause bad products due to misoperation of production assembly staff, and is more suitable for mechanical and automatic line production; the fool-proof structure of the utility model ensures that all parts cannot be assembled in the opposite direction except the circumferential direction, is suitable for the condition that the assembly position of the middle motor has requirements, can fully ensure the consistency of product assembly, and reduces the production reject ratio to the greatest extent.

Description

Fool-proof structure of centrally-mounted motor

Technical Field

The utility model relates to the technical field of motors, in particular to a foolproof structure of a centrally-mounted motor.

Background

The common structure assembly of the middle motor is shown in fig. 1, the stator of the inner rotor motor is assembled on the shell through symmetrical concave-convex characteristics, and then the rotor is assembled to form the motor.

The structure has the following problems in the actual production and assembly process: the concave-convex characteristics of the stator and the shell are symmetrical, and the stator can be installed into the shell after rotating for a certain angle; the plurality of assemblable positions cause the stator outlet position to change, possibly causing the inability to outlet; if the skeleton is also symmetrical, the winding starting position is easier to misplace, and disorder is increased; considering the Hall assembly again, the problem is more easily gone out in the hall position, and then leads to the hall to become invalid.

Disclosure of Invention

In order to solve the problems, the utility model provides a foolproof structure of a centrally-mounted motor.

The fool-proof structure of the centrally-mounted motor provided by the utility model adopts the following technical scheme:

the utility model provides a put motor prevent slow-witted structure, includes casing, stator core, insulating skeleton and PCB board, the inside wall axial of casing is provided with a plurality of spacing grooves, and is a plurality of the size of spacing groove is all inequality, stator core's lateral wall axial be provided with spacing groove assorted spacing arch, insulating skeleton's edge be provided with integratively with spacing protruding assorted cooperation piece, the edge of PCB board be provided with cooperation piece assorted notch.

Further, the inner surfaces of the limiting grooves are semi-cylindrical surfaces, and the axial lines of the limiting grooves are distributed in an array along the inner side wall surface of the shell.

Further, the outer surface of each limiting protrusion is attached to the inner surface of the corresponding limiting groove.

Further, one end of the matching block located on the outer side is higher than the outer surface of the insulating framework, and the height difference of the matching block is equal to the thickness of the PCB.

In summary, the present utility model includes at least one of the following beneficial technical effects:

(1) The fool-proof structure ensures the absolute consistency of products, has obvious fool-proof effect, does not cause bad products due to misoperation of production assembly staff, and is more suitable for mechanical and automatic line production;

(2) The fool-proof structure of the utility model ensures that all parts cannot be assembled in the opposite direction except the circumferential direction, is suitable for the condition that the assembly position of the middle motor has requirements, can fully ensure the consistency of product assembly, and reduces the production reject ratio to the greatest extent.

Drawings

FIG. 1 is a schematic diagram of a prior art center motor assembly;

FIG. 2 is a schematic diagram illustrating the assembly of a stator core and a housing according to the present utility model;

FIG. 3 is a schematic view of an assembly of an insulating framework of the present utility model;

fig. 4 is an assembly schematic diagram of a PCB board of the present utility model;

FIG. 5 is a schematic structural view of an insulating framework of the present utility model;

fig. 6 is a schematic structural diagram of a PCB board according to the present utility model.

The reference numerals in the figures illustrate:

1. a housing; 2. a stator core; 3. an insulating skeleton; 4. a PCB board; 5. a limit groove; 6. a limit protrusion; 7. a mating block; 8. a recess.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1:

the utility model is described in further detail below with reference to fig. 2-6.

The embodiment of the utility model discloses a foolproof structure of a centrally-mounted motor, which comprises a casing 1, a stator core 2, an insulating framework 3 and a PCB (printed circuit board) 4, wherein three limit grooves 5 are axially formed in the inner side wall of the casing 1, the three limit grooves 5 are different in size, three limit protrusions 6 matched with the limit grooves 5 are axially formed in the outer side wall of the stator core 2, three matching blocks 7 matched with the limit protrusions 6 are integrally formed in the edge of the insulating framework 3, and three notches 8 matched with the matching blocks 7 are formed in the edge of the PCB 4.

Referring to fig. 2, the inner surfaces of the limiting grooves 5 are semi-cylindrical, and the axes of the limiting grooves 5 are distributed along the inner side wall of the casing 1 in an array. Further, the outer surface of each limit bulge 6 is attached to the inner surface of the corresponding limit groove 5; preferably, one end of the fitting block 7 located at the outer side is higher than the outer surface of the insulating skeleton 3, and the height difference of the fitting block is equal to the thickness of the PCB 4, so that the PCB 4 can be more stably attached to the outer side of the insulating skeleton 3.

The implementation principle of the fool-proof structure of the middle motor provided by the embodiment of the utility model is as follows: the three semi-cylindrical limit grooves 5 in the shell 1 are different in size and matched with the three limit protrusions 6 of the stator core 2, so that only one assembly angle can be filled in the assembly process, and the assembly consistency of the stator core 2 and the shell 1 is ensured; the semi-cylindrical matching blocks 7 which are arranged at the edge of the insulating framework 3 and correspond to the limit protrusions 6 are consistent with the three semi-cylindrical limit protrusions 6 of the stator core 2 in size, so that if the angles are wrong in the assembly process, the assembly consistency of the insulating framework 3 and the stator core 2 is ensured at a glance; after the stator core 2 and the insulating framework 3 are assembled, the bulges with different radiuses are matched with a machine winding tool, so that the winding consistency is ensured; three notches 8 matched with the matching blocks 7 are formed in the edge of the PCB 4, and the three semicircular matching blocks 7 with different sizes are matched with the insulating framework 3, so that only one correct assembly position is guaranteed, the assembly consistency of the PCB 4 and the insulating framework 3 is guaranteed, the assembly positions of the three parts are in one-to-one correspondence, and the assembly consistency of the Hall position, winding production and stator shell is guaranteed.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (4)

1. The utility model provides a put foolproof structure of motor, includes casing (1), stator core (2), insulating skeleton (3) and PCB board (4), its characterized in that: the utility model discloses a stator core, including casing (1), stator core, PCB board, insulating skeleton (3), casing (1), casing (1)'s inside wall axial is provided with a plurality of spacing groove (5), a plurality of the size of spacing groove (5) is all different, stator core (2) outside wall axial be provided with spacing groove (5) assorted spacing arch (6), insulating skeleton (3) the edge be provided with spacing protruding (6) assorted cooperation piece (7) integratively, PCB board (4) the edge be provided with cooperation piece (7) assorted notch (8).

2. The fool-proof structure of a center motor according to claim 1, wherein: the inner surfaces of the limit grooves (5) are semi-cylindrical surfaces, and the axial lines of the limit grooves (5) are distributed in an array along the inner side wall surface of the shell (1).

3. The fool-proof structure of a center motor according to claim 2, wherein: the outer surface of each limit bulge (6) is attached to the inner surface of the corresponding limit groove (5).

4. A fool-proof structure of a centrally-mounted motor according to claim 3, wherein: one end of the matching block (7) positioned at the outer side is higher than the outer surface of the insulating framework (3), and the height difference of the matching block is equal to the thickness of the PCB (4).