CN206878564U - Stator structure - Google Patents

Abstract

A stator structure comprises a shaft cylinder arranged on a base, a bearing, a silicon steel sheet set and a pressing piece, wherein the shaft cylinder is provided with a containing space for the bearing to be contained, one end of the bearing extends outwards to form an extending part, the silicon steel sheet set is arranged on the outer side of the shaft cylinder and provided with an upper end face and a lower end face, the pressing piece is correspondingly arranged on the top end of the shaft cylinder and convexly extends to form a first pressing part and a second pressing part, the first pressing part is correspondingly arranged on the extending part, and the second pressing part is correspondingly arranged on the upper end face.

Description

Stator structure

【Technical field】

The present invention relates to a stator structure, especially one that can greatly improve the concentricity of silicon steel sheets and bearings and the accuracy of assembly positions, and can avoid the problem of deformation of silicon steel sheets and bearings during the assembly process. The stator structure.

【Background technique】

According to, the use of electronic information products (such as: computers, etc.) is becoming more and more popular and more widely used. Due to the rapid development of electronic information industry technology driven by demand, electronic information is developing towards the trend of increasing execution speed and increasing access capacity. The parts and components in the aforementioned electronic information products are often accompanied by high temperature during high-speed operation.

Taking a host computer as an example, the heat generated by its internal central processing unit (CPU) accounts for the majority. In addition, when the heat of the central processing unit gradually increases, the execution performance will decrease, and when the heat accumulation exceeds its allowable limit, it will It will force the computer to crash, and in severe cases, it may cause damage; and, in order to solve the problem of electromagnetic radiation, the computer host is usually closed with a chassis shell, so that how to integrate the central processing unit and other heating components (or components) ) The rapid export of heat energy has become an important issue.

And the general central processing unit is used to solve the way of heat radiation that radiator and cooling fan are arranged above it, one side of the radiator is configured with some fins, and the other side of the radiator (not having fins) ) surface directly contacts the aforementioned central processing unit so that the heat energy can be conducted to the aforementioned fin ends, and the heat energy can be quickly dissipated by means of radiation heat dissipation and forced airflow with a fan.

The heat dissipation fan 1 of the known technology has a base 10, and a hollow shaft tube 11 is protruded on the base 10, and a bearing 12 is arranged in the shaft tube 11, and a copper ring 13 is used between the bearing 12 and the shaft tube 11. It is pressed in by a tight fit to increase its tightness, and a silicon steel sheet group 14 is arranged outside the shaft cylinder 11, and the silicon steel sheet group 14 and the shaft cylinder 11 are pressed in by a radial interference fit to increase its tightness. Therefore, during operation, the concentricity of the silicon steel sheet group 14 and the bearing 12 is not easy to control, and in the assembly process, the assembly position accuracy of the silicon steel sheet group 14 and the bearing 12 is relatively low. Moreover, due to the interference fit assembly method, the silicon steel sheet assembly 14 and the bearing 12 are easily deformed during the assembly process.

The above, known to have the following disadvantages:

1. The concentricity of silicon steel sheet group and bearing is not easy to control;

2. The location accuracy of silicon steel sheet group and bearing group is low;

3. The silicon steel sheet group and the bearing are easily deformed during the assembly process.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that the inventor of this case and the relevant manufacturers engaged in this industry want to study and improve urgently.

【Content of invention】

Therefore, in order to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a stator structure that can greatly improve the concentricity of the silicon steel sheet group and the bearing.

The secondary purpose of the present invention is to provide a stator structure that greatly increases the positional accuracy of silicon steel sheets and bearings.

The secondary purpose of the present invention is to provide a stator structure which can avoid deformation caused by assembly of known silicon steel sheet and shaft cylinder by interference fit.

A secondary object of the present invention is to provide a stator structure that can avoid deformation of the bearing during assembly.

In order to achieve the above purpose, the present invention provides a stator structure, including a shaft tube, a bearing, a silicon steel sheet group and a pressed part, the shaft tube is arranged on a base, and the shaft tube has an accommodating space The bearing is accommodated, one end of the bearing extends outward to form an extension, the silicon steel sheet group is sleeved on the outside of the shaft cylinder, and the silicon steel sheet group has an upper end surface and a lower end surface, the pressed part Correspondingly arranged on the top of the shaft cylinder, one side of the pressed part protrudes to form a first pressing part and a second pressing part, the first pressing part corresponds to the extension part of the bearing, and the second pressing part Correspondingly press the upper end surface of the silicon steel sheet group.

Through the design of this structure of the present invention, the structure of the pressed part enables the first pressing part to correspondingly press the extension part of the bearing, and the second pressing part to correspondingly press the silicon steel sheet In other words, the pressed part can press and fix the bearing and the silicon steel sheet group at the same time. In this way, the concentricity of the silicon steel sheet group and the bearing can be greatly increased when the motor is running, and the assembly process Among them, the location accuracy of the silicon steel sheet group and the bearing group has been greatly increased.

In addition, through the structure of the present invention, it is also possible to avoid the radial interference fit method used in the combination of silicon steel sheets and shaft tubes, which is easy to produce extrusion during assembly, resulting in extrusion of silicon steel sheets and shaft tubes. Moreover, since the pressed part is pressed at the position of the extension of the bearing to fix the bearing, that is, the body of the bearing will not directly bear the axial pressure, so the damage of the bearing can be greatly reduced Rate.

【Description of drawings】

Fig. 1 is the three-dimensional sectional view of known stator structure;

Fig. 2A is the three-dimensional exploded view of the first embodiment of the stator structure of the present invention;

Fig. 2B is a three-dimensional assembled view of the first embodiment of the stator structure of the present invention;

2C is a three-dimensional sectional view of the first embodiment of the stator structure of the present invention;

Fig. 2D is an enlarged view of the first embodiment of the stator structure of the present invention.

Description of main symbols:

Stator structure 2

Base 20

Shaft 21

Accommodating space 211

Support part 212

Bearing 22

Extension 221

Flange 2211

Silicon steel sheet group 23

Silicon steel sheet 231

Upper end face 2311

Lower end face 2312

Pressed parts 24

The first pressing part 241

Second pressing part 242

Groove 243

Elastic 25

Upper side 251

lower side 252

Wear parts 26.

【detailed description】

The above-mentioned purpose of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the accompanying drawings.

Please refer to Fig. 2A, 2B, 2C, 2D, it is the three-dimensional exploded view of the first embodiment of the stator structure of the present invention and three-dimensional combined view and three-dimensional sectional view and enlarged view, as shown in the figure, a kind of stator structure 2, comprises a shaft A cylinder 21, a bearing 22, a silicon steel sheet 231 group 23 and a pressed part 24, the shaft cylinder 21 is arranged on a base 20 and has an accommodating space 211, and the bottom of the shaft cylinder 21 extends upward to form a support part 212, the bearing 22 is accommodated in the accommodating space 211 and arranged on the support part 212, and one end of the bearing 22 extends outward to form an extension part 221, so that the bearing 22 is similar to the word "convex" The silicon steel sheet group 23 is composed of a plurality of silicon steel sheets 231, and the silicon steel sheet group 23 is sleeved on the outside of the shaft cylinder 21 and has an upper end surface 2311 and a lower end surface 2312. The pressing A first pressing part 241 and a second pressing part 242 are protruded from one side of the piece 24, and a groove 243 is formed between the first pressing part 241 and the second pressing part 242, and the groove 243 is correspondingly locked. On the top end of the shaft cylinder 21 , the first pressing part 241 is correspondingly pressing the extension part 221 of the bearing 22 , and the second pressing part 242 is correspondingly pressing the upper end surface 2311 of the silicon steel sheet group 23 .

The aforementioned structure further has an elastic member 25 accommodated in the accommodating space 211, the elastic member 25 has an upper side 251 and a lower side 252, and the first pressing portion 241 is correspondingly pressed on the upper side 251, And the extension 221 of the bearing 22 further forms a flange 2211 upwards, and the flange 2211 is in contact with the lower side 252 of the elastic member 25. The elastic member 25 can absorb vibration when the motor is running to achieve vibration-absorbing effect.

In addition, in this embodiment, the stator structure 2 further has a wear-resistant part 26, which is accommodated in the accommodating space 211, and the wear-resistant part 26 is relatively arranged between the support part 212 and the bearing 22, Its function is to avoid the damage caused by the contact and friction between the bearing 22 and the shaft cylinder 21. In this embodiment, the stator structure 2 has a wear-resistant part 26 for illustration, but in actual implementation, it can be adjusted according to the needs of users.

Through the design of this structure of the present invention, when the stator structure 2 is assembled, the first pressing part 241 is correspondingly pressed against the upper side 251 of the elastic part 25 through the structure of the pressing part 24, The lower side 252 of the elastic member 25 suppresses the flange 2211 of the bearing 22, and the second pressing portion 242 correspondingly suppresses the upper end surface 2311 of the silicon steel sheet group 23. In other words, the pressed member 24 can Simultaneously press and fix the bearing 22 and the silicon steel sheet group 23, so that the concentricity of the silicon steel sheet group 23 and the bearing 22 can be greatly improved when the motor is running, and in the assembly process, the silicon steel sheet group 23 can be greatly increased And bearing 22 sets of position accuracy.

In addition, through the structure of the present invention, it is also possible to avoid the radial interference fit method used in the combination of silicon steel sheets and shaft tubes, which is easy to produce extrusion during assembly, resulting in extrusion of silicon steel sheets and shaft tubes. The problem of compression deformation, moreover, because the said pressing part 24 is set at the position of the extension part 221 of the bearing 22 so as to achieve fixing the bearing 22, that is, the body of the bearing 22 will not directly bear the axial pressure, so The damage rate of the bearing 22 can be greatly reduced.

As stated above, the present invention has the following advantages compared to the known ones:

1. Significantly improve the concentricity of the silicon steel sheet group and the bearing;

2. Significantly increase the position accuracy of the silicon steel sheet group and the bearing group;

3. Eliminate the deformation caused by the assembly of known silicon steel sheet and shaft cylinder by interference fit;

4. Avoid bearing deformation during assembly.

The present invention has been described in detail above, but what is described above is only a preferred embodiment of the present invention, and should not limit the scope of the present invention. That is, all equivalent changes and modifications made according to the application scope of the present invention shall still fall within the scope of the patent of the present invention.

Claims (8)

1. A stator structure, characterized in that, comprising: A shaft tube is arranged on a base, and the shaft tube has an accommodating space; A bearing is accommodated in the accommodating space, and one end of the bearing extends outward to form an extension; A silicon steel sheet group is sheathed on the outside of the shaft cylinder, the silicon steel sheet group has an upper end surface and a lower end surface; and A pressing part is correspondingly arranged on the top end of the shaft cylinder. One side of the pressing part protrudes to form a first pressing part and a second pressing part. The first pressing part corresponds to pressing the extension part of the bearing. The second pressing part presses and sets the upper end surface of the silicon steel sheet group correspondingly. 2. The stator structure according to claim 1, further comprising an elastic member accommodated in the accommodating space, the elastic member has an upper side and a lower side, and the first pressing portion is correspondingly set On the upper side, the lower side is relatively attached to the extension part of the bearing. 3 . The stator structure according to claim 2 , wherein the extension portion of the bearing further forms a flange upward, and the flange is in corresponding contact with the lower side of the elastic member. 4 . 4 . The stator structure according to claim 1 , wherein a groove is formed between the first pressing part and the second pressing part, and the groove is correspondingly clamped on the top end of the shaft cylinder. 5 . The stator structure according to claim 1 , wherein the group of silicon steel sheets is composed of a plurality of silicon steel sheets. 6 . The stator structure according to claim 1 , wherein the bottom of the shaft cylinder extends upwards to form a support portion, and the bearing is arranged on the support portion. 7 . The stator structure according to claim 6 , further comprising a wear-resistant part accommodated in the accommodating space, and the wear-resistant part is relatively disposed between the support part and the bearing. 8. The stator structure according to claim 1, wherein the bearing is in a convex shape.