High-reliability outer rotor motor stator core mounting structure

Abstract

The utility model relates to a high-reliability external rotor motor stator core installation structure, which belongs to the technical field of external rotor motors, and comprises a base and silicon steel sheets used for being stacked into a stator core, an installation ring groove used for installing the stator core is coaxially arranged on the base, and a positioning rib is arranged on the inner wall of the installation ring groove. The positioning ribs are arranged in the length direction of the machine base and provide support for stacking of the silicon steel sheets. The stator core mounting structure has the effect of improving the reliability of mounting the stator core on the base without damaging the base.

Description

Technical Field

[0001] This utility model relates to the technical field of external rotor motors, and in particular to a high-reliability stator core mounting structure for external rotor motors. Background Technology

[0002] The motor housing is an important component of the electric motor, usually made of aluminum alloy. Its main function is to protect the various internal components of the motor from corrosion and damage from the external environment. The motor housing includes the casing, end covers and tail covers respectively located on both sides of the casing. The end covers are equipped with a mounting base for the stator core. In the prior art, the stator core is mostly fixed to the mounting base by hot pressing. During the installation of the stator core, it is difficult to control the amount of cutting of the stator core onto the mounting base, and it is easy to cause poor pressing and slippage of the stator core along the length of the mounting base. Utility Model Content

[0003] In order to improve the reliability of the stator core mounting on the frame without damaging the frame, this application provides a high-reliability external rotor motor stator core mounting structure.

[0004] This application provides a high-reliability stator core mounting structure for an external rotor motor, employing the following technical solution:

[0005] A high-reliability external rotor motor stator core mounting structure includes a frame and silicon steel sheets for stacking into a stator core. The frame has a coaxial mounting ring groove for mounting the stator core. The inner wall of the mounting ring groove is provided with positioning ribs, which are arranged along the length of the frame and provide support for the stacking of silicon steel sheets.

[0006] By adopting the above technical solution, the positioning ribs provide support for the stacking of silicon steel sheets. The silicon steel sheets are punched into fan-shaped pieces and stacked on the positioning ribs in a certain order and according to certain rules to form the stator core. By setting the mounting ring groove, the slippage of the stator core along the length direction of the machine base is effectively restricted, so that the stator core can be stably installed on the machine base. This method does not require cutting the machine base and can improve the reliability of the stator core installed on the machine base without damaging the machine base.

[0007] Preferably, an abutment ring is slidably connected to the base, and the abutment ring has a through hole for the base to pass through. After sliding, the abutment ring fits against the end of the stator core, and the abutment ring is connected to the stator core and the base by an adhesive component.

[0008] By adopting the above technical solution and setting the abutment ring, the position of the stator core is further defined, and a certain degree of support is provided for the stator core, thereby improving the reliability of the stator core mounted on the machine frame.

[0009] Preferably, a positioning block is provided on the inner wall of the abutment through hole, a positioning groove is provided on the machine base for the positioning block to slide, and a locking groove is also provided on the machine base for the positioning block to be inserted after rotation. The locking groove is connected to the positioning groove, and when the positioning block is located in the locking groove, the abutment ring is in contact with the stator core.

[0010] By adopting the above technical solution, the stability of the abutment ring sliding along the length of the machine base is improved with the cooperation of the positioning block and the positioning groove. With the cooperation of the positioning block and the locking groove, the sliding of the abutment ring can be locked, restricting the sliding of the abutment ring along the machine base, and making it easy to fix the abutment ring to the stator core by using glue.

[0011] Preferably, the end face of the abutment ring facing the stator core is provided with a shock-absorbing pad, and the shock-absorbing pad has a certain elasticity.

[0012] By adopting the above technical solution and setting the vibration damping pad, on the one hand, the gap between the stator core and the abutment ring can be filled, improving the reliability of the support provided by the abutment ring to the stator core. On the other hand, after the vibration damping pad is pressed tightly against the stator core, the shaking of the stator core during motor use can be reduced, so that the stator core is less likely to collide with the end wall of the mounting ring groove and the abutment ring to generate noise, and can play a role in vibration damping to a certain extent.

[0013] Preferably, the shock-absorbing pad is made of rubber.

[0014] By adopting the above technical solution, the shock-absorbing pad made of rubber not only has good elasticity and flexibility, which can effectively absorb and disperse vibration energy and reduce the amplitude of vibration and noise, but also has good wear resistance and aging resistance, effectively ensuring the service life of the shock-absorbing pad.

[0015] Preferably, the shock-absorbing pad is made of rubber.

[0016] By adopting the above technical solution, epoxy resin adhesive has the characteristics of strong adhesion, good tensile and compressive strength, as well as the advantages of not being easy to age, heat resistance, water resistance, and chemical corrosion resistance, which effectively ensures the reliability of fixing the abutment ring to the stator core and providing support for the stator core.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. Positioning ribs provide support for the stacking of silicon steel sheets. The silicon steel sheets are punched into fan-shaped pieces and stacked on the positioning ribs in a certain order and according to certain rules to form the stator core. By setting the mounting ring groove, the slippage of the stator core along the length direction of the machine base is effectively restricted, so that the stator core can be stably installed on the machine base. This method does not require cutting the machine base and can improve the reliability of the stator core installed on the machine base without damaging the machine base.

[0019] 2. By setting up the shock-absorbing pad, on the one hand, the gap between the stator core and the abutment ring can be filled, improving the reliability of the support provided by the abutment ring to the stator core. On the other hand, after the shock-absorbing pad is pressed tightly against the stator core, it can reduce the shaking of the stator core during motor use, so that the stator core is less likely to collide with the end wall of the mounting ring groove and the abutment ring to generate noise, which can play a role in shock absorption and noise reduction to a certain extent. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0021] Figure 2 This is a schematic diagram of the base in Embodiment 1 of this application.

[0022] Figure 3 This is a structural cross-sectional view of Embodiment 2 of this application.

[0023] Figure 4 This is a schematic diagram of the base in Embodiment 2 of this application.

[0024] Figure 5 This is a top view of the abutment ring in Embodiment 2 of this application.

[0025] Figure 6 This is a side view of the abutment ring in Embodiment 2 of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Base; 11. Mounting ring groove; 12. Positioning rib; 13. Positioning groove; 14. Locking groove; 2. Stator core; 21. Silicon steel sheet; 3. Abutment ring; 31. Abutment through hole; 32. Positioning block; 33. Vibration damping pad. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0028] This application discloses a high-reliability stator core mounting structure for an external rotor motor.

[0029] Example 1:

[0030] Reference Figure 1 and Figure 2The system includes a base 1 and silicon steel sheets 21 for stacking into a stator core 2. The base 1 has a coaxial mounting groove 11 for mounting the stator core 2. The length of the mounting groove 11 is the same as the thickness of the stator core 2. The inner wall of the mounting groove 11 has a positioning rib 12 integrally formed with the base 1. The positioning rib 12 is set along the length direction of the base 1 and provides support for the stacking of silicon steel sheets 21. The silicon steel sheets 21 are punched into fan-shaped pieces and stacked on the positioning rib 12 in a certain order and rule to form the stator core 2. By setting the mounting groove 11, the slippage of the stator core 2 along the length direction of the base 1 is effectively restricted, so that the stator core 2 can be stably mounted on the base 1. This method does not require cutting the base 1 and can improve the reliability of the stator core 2 mounted on the base 1 without damaging the base 1.

[0031] Example 2:

[0032] The difference from Embodiment 1 is that, referring to Figure 3 and Figure 4 The base 1 is slidably connected with two abutment rings 3, which are symmetrically arranged on both sides of the stator core 2. The abutment rings 3 slide along the length of the base 1. The abutment rings 3 have through holes 31 for the base 1 to pass through. The inner wall of the through holes 31 fits against the outer wall of the base 1. After sliding, the abutment rings 3 fit against the end of the stator core 2. The abutment rings 3 are fixed to the stator core 2 and the base 1 with adhesive. The abutment rings 3 further limit the position of the stator core 2 and provide a certain support for the stator core 2, thereby improving the reliability of the stator core 2 installed on the base 1.

[0033] The adhesive components are made of epoxy resin, which has the characteristics of strong adhesion, good tensile and compressive strength, as well as the advantages of not aging, heat resistance, water resistance and chemical corrosion resistance. This effectively ensures the reliability of fixing the abutment ring 3 to the stator core 2 and providing support for the stator core 2.

[0034] Reference Figure 4 and Figure 5A positioning block 32 is provided on the inner wall of the abutment through hole 31. The positioning block 32 is integrally formed with the abutment ring 3. In this embodiment, there are two positioning blocks 32, which are symmetrically arranged on both sides of the radial direction of the abutment ring 3. The base 1 is provided with a positioning groove 13 for the positioning block 32 to slide. The positioning groove 13 is arranged along the length direction of the base 1. In addition, the base 1 is also provided with a locking groove 14 for the positioning block 32 to be inserted after rotation. The locking groove 14 is connected to the positioning groove 13. When the positioning block 32 is located in the locking groove 14, the abutment ring 3 is in contact with the stator core 2. With the cooperation of the positioning block 32 and the positioning groove 13, the stability of the abutment ring 3 sliding along the length direction of the base 1 is improved. With the cooperation of the positioning block 32 and the locking groove 14, the sliding of the abutment ring 3 can be locked, restricting the sliding of the abutment ring 3 along the base 1, so that the abutment ring 3 can be fixed to the stator core 2 by means of glue.

[0035] Reference Figure 3 and Figure 6 A shock-absorbing pad 33 is provided on the end face of the abutment ring 3 facing the stator core 2. The shock-absorbing pad 33 has a certain elasticity. By setting the shock-absorbing pad 33, on the one hand, it can fill the gap between the stator core 2 and the abutment ring 3, improving the reliability of the support provided by the abutment ring 3 to the stator core 2. On the other hand, after the shock-absorbing pad 33 is pressed against the stator core 2, it can reduce the shaking of the stator core 2 during the use of the motor. Thus, the stator core 2 is less likely to collide with the end wall of the mounting ring groove 11 and the abutment ring 3 to generate noise, and can play a certain role in shock absorption.

[0036] The shock-absorbing pad 33 is made of rubber. The rubber shock-absorbing pad 33 not only has good elasticity and flexibility, which can effectively absorb and disperse vibration energy and reduce the amplitude of vibration and noise, but also has good wear resistance and aging resistance, which can effectively ensure the service life of the shock-absorbing pad 33. In addition, the rubber shock-absorbing pad 33 can be fixed to the stator core 2 by epoxy resin glue.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-reliability external rotor motor stator core mounting structure, comprising a frame (1) and silicon steel sheets (21) for stacking into a stator core (2), characterized in that, The base (1) is coaxially provided with an installation ring groove (11) for installing the stator core (2). The inner wall of the installation ring groove (11) is provided with a positioning rib (12). The positioning rib (12) is arranged along the length direction of the base (1). The positioning rib (12) provides support for the stacking of silicon steel sheets (21).

2. The high-reliability external rotor motor stator core mounting structure according to claim 1, characterized in that, A contact ring (3) is slidably connected to the base (1). The contact ring (3) has a through hole (31) for the base (1) to pass through. After the contact ring (3) slides, it fits against the end of the stator core (2). The contact ring (3) is connected to the stator core (2) and the base (1) by an adhesive component.

3. The high-reliability external rotor motor stator core mounting structure according to claim 2, characterized in that, The inner wall of the abutment through hole (31) is provided with a positioning block (32), and the base (1) is provided with a positioning groove (13) for the positioning block (32) to slide. The base (1) is also provided with a locking groove (14) for the positioning block (32) to be inserted after rotation. The locking groove (14) is connected to the positioning groove (13). When the positioning block (32) is located in the locking groove (14), the abutment ring (3) is in contact with the stator core (2).

4. The high-reliability external rotor motor stator core mounting structure according to claim 3, characterized in that, The abutment ring (3) has a shock-absorbing pad (33) on its end face facing the stator core (2), and the shock-absorbing pad (33) has a certain elasticity.

5. The high-reliability external rotor motor stator core mounting structure according to claim 4, characterized in that, The shock-absorbing pad (33) is made of rubber.

6. The high-reliability external rotor motor stator core mounting structure according to claim 2, characterized in that, The adhesive component is made of epoxy resin.

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