CN201226480Y - End cover assembling and positioning structure of motor - Google Patents

Abstract

The utility model provides an end cover positioning structure of motor, includes stator core (1) and end cover (2), its characterized in that: a plurality of positioning clamping grooves (3) are formed in the end face of the stator core (1), a plurality of mounting pins (6) corresponding to the positioning clamping grooves (3) extend out of the end cover (2), and the mounting pins (6) are embedded into the positioning clamping grooves (3). The thickness of stator core between the end cover is reduced, the axial installation distance is short, the axial accumulated error is obviously reduced, the installation is convenient, the structure is simple, the radial positioning is more accurate and convenient, the position precision of the installation of the stator core and the end cover is obviously improved, the electromagnetic air gap of the motor can be effectively ensured to be even, the structure is concentric in axial direction, and the problems of mechanical stability and noise in the operation of the motor are solved.

Description

A motor end cover assembly and positioning structure

Technical field:

The utility model relates to an assembly and positioning structure of an end cover of a motor.

Background technique:

The assembly and positioning structure of the end cover of the traditional motor is: the stator core is formed by stacking the same stator punches, and then the end cover is stacked on the end face of the stator core, and the stator core and the end cover are connected by a bolt and nut mechanism. connect. This assembly structure has the following disadvantages: 1) Due to the relatively large thickness of the stator core, the two ends of the cover are installed with the stator core through a bolt and nut mechanism, and the axial dimension of the stator core between the end faces of the two ends of the cover Long, the axial cumulative error is large, and the assembly accuracy is poor; 2) The radial position of the stator core and the two end covers is realized by the bolt and nut mechanism, and the assembly accuracy is poor, which affects the reliability of the motor operation; 3) Due to the difficulty in assembly accuracy Guarantee, bring mechanical stability and noise problems. 4) Since the end face of the stator core is in contact with the end cover, it is necessary to ensure that the end face of the stator core is evenly painted. Due to the large area of the end face of the entire stator core, it is difficult to ensure the influence of paint tumors and paint slag on the installation surface during the assembly process .

Invention content:

The purpose of the utility model is to provide an assembly and positioning structure of the end cover of the motor, which adopts the embedded cooperation between the installation foot of the end cover and the positioning slot of the stator core, and the assembly is reliable and easy, and the assembly precision is high.

The technical scheme of the utility model is achieved in that:

An assembly and positioning structure of an end cover of a motor, including a stator core and an end cover, a plurality of positioning slots are opened on the end surface of the stator core, and a plurality of mounting feet corresponding to the positioning slots protrude from the end cover, and the mounting feet are inserted into the into the positioning card slot.

Compared with the prior art, the utility model has the following advantages: 1) By opening several positioning slots on the end face of the stator iron core, the mounting feet protruding from the end cover are used to cooperate with the positioning slots, reducing the gap between the end covers. The thickness of the stator core and the short axial installation distance significantly reduce the axial cumulative error; 2) Use the mounting feet protruding from the end cover to cooperate with the positioning slot, which is convenient for installation, simple in structure, and more accurate and convenient in radial positioning , which significantly improves the position accuracy of the stator core and end cover installation, and can effectively ensure that the electromagnetic air gap of the motor is uniform, the structure is axially concentric, and solves the mechanical stability and noise problems during the operation of the motor; 3) The occupation of the positioning slot The area is small, and the structure of this avoidance groove can effectively ensure the influence of paint bumps and paint slag on the installation surface during the assembly process.

For the above-mentioned technical solution, the utility model can also make the following improvements:

There are installation holes on the bottom surface of the above-mentioned positioning card slot, and through holes are also opened on the installation feet. The bolts pass through the installation holes and the through holes and are connected with the nuts. The structure is simple and easy to manufacture.

The bottom surface of the above-mentioned positioning slot is in contact with the top surface of the installation foot. The bottom surface of the slot and the top surface of the installation foot are all planes, coated with a paint layer. The slag is easier to handle and can effectively ensure the installation accuracy during assembly.

The inner side wall of the above-mentioned positioning card slot is an arc surface, and the inner side surface of the mounting foot is an arc surface. The cooperation between the inner side wall and the inner side surface can ensure the concentricity of the end cover and the stator core after assembly. Simple and high precision.

The number of the above-mentioned positioning card slots and mounting feet is 2 or more.

The above-mentioned end caps are metal stretch forming and have bearing chambers.

The above-mentioned positioning slot is located at the edge of the stator core, which is easy to process and easy to assemble.

Description of drawings:

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is an assembly drawing of the utility model;

Figure 2 is an exploded view of Figure 1;

Fig. 3 is a schematic structural view of the stator core of the present invention.

Detailed ways:

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model includes a stator iron core 1 and an end cover 2. There are several positioning slots 6 on the end surface of the stator iron core 1, and a plurality of positioning slots 6 protrude from the end cover 2. The mounting foot 3 corresponding to the slot 6 is inserted into the positioning slot 6 and connects the stator core 1 and the end cover 2 through a bolt and nut mechanism. An installation hole 4 is provided on the bottom surface 5 of the positioning slot 6 , and a through hole 7 is also provided on the installation foot 3 . The bolt 8 passes through the installation hole 4 and the through hole 7 and is connected with the nut 9 . The bottom surface 5 of the positioning slot 6 is in contact with the top surface 11 of the mounting foot 3 . The inner side wall 12 of the positioning slot 6 is an arc surface, and the inner side 13 of the mounting foot 3 is an arc surface. The cooperation between the inner side wall 12 and the inner side 13 ensures the concentricity of the end cover 2 and the stator core 1 after assembly. The number of positioning card slots 6 and mounting feet 3 is 2 or more. The end cap 2 is drawn metal and has a bearing chamber 10 . The positioning slot 6 is located at the edge of the stator core 1 .

The working principle of the utility model is: directly insert the mounting feet 3 protruding from the end cover 2 into the positioning slot 6 and connect the stator core 1 and the end cover 2 through the bolt and nut mechanism. The bottom surface 5 of the positioning card slot 6 is provided with a mounting hole 4, and the mounting foot 3 is also provided with a through hole 7. The bolt 8 passes through the mounting hole 4 and the through hole 7 and is connected with the nut 9. The cooperation of the card slot 6 is fast and accurate for axial and radial positioning, the assembly precision is high, and the installation is simple and convenient.

Claims (7)

1. An assembly and positioning structure of an end cover of a motor, including a stator core (1) and an end cover (2), characterized in that: there are several positioning slots (6) on the end surface of the stator core (1), and the end The cover (2) has a plurality of mounting feet (3) corresponding to the positioning slots (6), and the mounting legs (3) are embedded in the positioning slots (6). 2. An assembly and positioning structure for an end cover of a motor according to claim 1, characterized in that: the bottom surface (5) of the positioning slot (6) is provided with a mounting hole (4), and the mounting foot (3) is also A through hole (7) is provided, and a bolt (8) passes through the mounting hole (4) and the through hole (7) and is connected with the nut (9). 3. A motor end cover assembly and positioning structure according to claim 1 or 2, characterized in that: the bottom surface (5) of the positioning slot (6) is in contact with the top surface (11) of the mounting foot (3) . 4. A motor end cover assembly and positioning structure according to claim 1 or 2, characterized in that: the inner side wall (12) of the positioning slot (6) is a circular arc surface, and the inner side surface of the mounting foot (3) (13) is an arc surface, and the cooperation of the inner sidewall (12) and the inner side surface (13) ensures the concentricity of the end cover (2) and the stator core (1) after assembly. 5. An assembly and positioning structure for an end cover of a motor according to claim 1 or 2, characterized in that the number of positioning slots (6) and mounting feet (3) is 2 or more. 6. An assembly and positioning structure for an end cover of a motor according to claim 1 or 2, characterized in that the end cover (2) is formed by stretching metal and has a bearing chamber (10). 7. An assembly and positioning structure for an end cover of a motor according to claim 1 or 2, characterized in that the positioning slot (6) is located at the edge of the stator core (1).

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