Brushless motor punching sheet

Abstract

The utility model relates to the technical field of motor punching sheets, and discloses a brushless motor punching sheet, which is characterized in that the outer side of a first motor punching sheet is provided with a plurality of supporting rods, the center of the first motor punching sheet is provided with a first notch, the lower end of the first motor punching sheet is provided with a second motor punching sheet and an annular groove, and the lower surface of the first motor punching sheet is provided with a connecting block; a clamping block is mounted at the lower end of the connecting block and is mounted in the annular groove; the annular groove is formed in the surface of the supporting rod and used for fixing the structure of the first motor punching sheet, the annular groove at least comprises a staggered clamping structure, a connecting block is installed at the lower end of the punching sheet, a clamping block is installed at the lower end of the connecting block, the clamping block and the circular groove are the same in size, and the clamping groove moves in the annular groove to conduct staggered fixing on the first motor punching sheet; the supporting rods are arranged on the outer side of the punching sheet, the surface area of the outer ring of the motor punching sheet is increased through the first notches, and the heat dissipation efficiency of the outer ring of the motor punching sheet can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor punching sheets, in particular to a brushless motor punching sheet. Background Art

[0002] Brushless motor laminations play an important role in brushless motors. This lamination is suitable for certain types of brushless motors, especially those with the same total number of permanent magnet poles as the total number of stator poles. Its structural features include multiple open slots, with long slots for magnetic separation between each adjacent slot. These long slots are usually closed slots, and the distance from the pole shoe surface is precisely designed to achieve the best magnetic field utilization effect. This design aims to make full use of the permanent magnet magnetic field and improve the starting performance of the motor, thereby increasing the efficiency by 3% to 5% compared with similar motors. At the same time, this design also avoids the notch effect in the motor stator core, further improving the performance of the motor. In addition to the above basic structure, there are some special designs. The brushless motor laminations designed by the manufacturer, such as the assembled stator laminations, are assembled from single-piece stacks along the circumferential direction. Through the cooperation of self-locking grooves and self-locking convex points, as well as the combined use of buckles and buckle slots, the connection between the single-piece stacks has a self-locking effect, and a stable connection can be achieved without welding. Brushless motor laminations are widely used in home appliances, automobiles, industry and other fields. For example, in the field of home appliances, brushless motor laminations are used in washing machines, air conditioners, refrigerators and other equipment to achieve energy saving, environmental protection and noise reduction. In the automotive field, brushless motor laminations are used in the drive systems, air conditioners and electric fans of electric vehicles and hybrid vehicles to increase battery life and reduce energy consumption.

[0003] A rotor punching sheet of a brushless DC motor with publication number CN216162485U comprises a punching sheet body; a bearing hole is provided inside the punching sheet body; the bearing hole and the punching sheet body are concentric circles; a tongue is fixedly connected to the bearing hole; by providing a bearing hole on the punching sheet body and arranging a tongue on the side of the bearing hole, a guiding function is achieved in the process of stacking rotor punching sheets, and the existing rotor punching sheets are solved. During the stacking process, since more rotor punching sheets are required to be stacked, it is difficult to align the stacked rotor punching sheets, which makes the notches in the rotor uneven and prone to deviation when winding the coil. Such a rotor will show an oscillating state during use. Over time, the rotor bearing will eventually bend and break, resulting in damage to the device. In this scheme, the connection structure is relatively simple. When used for a long time, the connecting piece will vibrate and then cause the connection to be disconnected, which will eventually cause the rotor bearing to bend and break, resulting in damage to the device. For this reason, we propose a brushless motor punching sheet. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a brushless motor punching sheet to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a brushless motor punching sheet includes a No. 1 motor punching sheet, a plurality of support rods are arranged on the outer side of the No. 1 motor punching sheet, and a first notch is arranged at the center of the No. 1 motor punching sheet, and a No. 2 motor punching sheet is installed at the lower end of the No. 1 motor punching sheet, characterized in that it also includes:

[0008] The ring groove is provided with a connecting block on the lower surface of the No. 1 motor punching sheet, a clamping block is installed at the lower end of the connecting block, the clamping block is installed inside the ring groove, and the ring groove is provided on the surface of the support rod.

[0009] The structure for fixing the No. 1 motor punching sheet comprises at least one offset clamping structure.

[0010] Preferably, an annular groove is provided at the upper end of the No. 1 motor punching sheet, a connecting block is installed at the lower end of the No. 1 motor punching sheet, and the No. 1 motor punching sheet and the No. 2 motor punching sheet are arranged in the same shape.

[0011] Preferably, a plurality of circular grooves are arranged on the surface of the annular groove, and small annular grooves are arranged on the surface of the annular groove, and the inside of the annular groove is arranged.

[0012] Preferably, the installation position of the connecting block corresponds to the position of the circular groove, and the size of the clamping block is the same as that of the circular groove.

[0013] Preferably, a plurality of empty slots are arranged on the surface of the annular slot, and the lower ends of the empty slots penetrate the No. 1 motor punching sheet, and the diameter of the empty slots is smaller than that of the circular slots, and a fixing pin is installed inside the empty slots.

[0014] Preferably, four connecting blocks are provided and four corresponding empty slots are provided.

[0015] Preferably, the dislocation snap-fit ​​structure comprises a connecting block, a snap-fit ​​block, an annular groove and a fixing pin, a connecting block is arranged at the lower end of the No. 1 motor punching sheet, a snap-fit ​​block is arranged at the lower end of the connecting block, and the snap-fit ​​block is installed inside the annular groove.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a brushless motor punching plate, which has the following beneficial effects:

[0018] 1. In the brushless motor punching sheet, an annular groove is arranged on the upper surface of the punching sheet, a fixing block is installed inside the annular groove, a connecting block and a clamping block are installed at the lower end of the punching sheet, and when splicing is required, the clamping block is aligned with the circular groove, and after the clamping block enters the circular groove, the No. 1 motor punching sheet is rotated, the clamping block moves inside the circular groove, and the connecting block moves inside the small annular groove above the annular groove, and the connecting block connects the clamping block with the No. 1 motor punching sheet, and the staggered clamping structure is used to make the connection between the motors closer, so as to prevent the motor punching sheet from being deformed and vibrating during long-term use.

[0019] 2. In the brushless motor punching sheet, an empty slot is set inside the ring groove. The diameter of the empty slot is smaller than the clamping block, which can prevent the clamping block from entering the empty slot. When the No. 1 motor punching sheet and the No. 2 motor punching sheet are connected, the fixing pin is inserted into the empty slot to fix the No. 1 motor punching sheet for the second time to prevent the motor punching sheet from shaking and causing the No. 1 motor punching sheet to slip out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the utility model;

[0021] Figure 2 It is a folded schematic diagram of the utility model;

[0022] Figure 3 It is a schematic cross-sectional view of the side panel of the utility model.

[0023] In the figure: 1. No. 1 motor punching plate; 2. Support rod; 3. First notch; 4. Connecting block; 5. Clamping block; 6. Ring groove; 7. No. 2 motor punching plate; 8. Empty groove; 9. Fixing pin; 10. Round groove; 11. Small ring groove; 12. Fixing block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3A brushless motor punching sheet comprises a motor punching sheet 1, a plurality of support rods 2 are arranged on the outer side of the motor punching sheet 1, and a first notch 3 is arranged at the center of the motor punching sheet 1, and a motor punching sheet 7 is installed at the lower end of the motor punching sheet 1. The invention is characterized in that it also comprises: an annular groove, a connecting block 4 is arranged on the lower surface of the motor punching sheet 1, a clamping block 5 is installed at the lower end of the connecting block 4, and the clamping block 5 is installed inside the annular groove 6; the annular groove 6 is arranged on the surface of the support rod 2; a structure for fixing the motor punching sheet 1, which at least comprises a staggered clamping structure, and is the basic composition of the motor punching sheet.

[0026] Furthermore, an annular groove 6 is set at the upper end of the No. 1 motor punching sheet 1, a connecting block 4 is installed at the lower end of the No. 1 motor punching sheet 1, and the No. 1 motor punching sheet 1 and the No. 2 motor punching sheet 7 are set to the same shape, the clamping block 5 is installed inside the annular groove 6, and the No. 1 motor punching sheet 1 and the No. 2 motor punching sheet 7 are set to the same shape.

[0027] Furthermore, a plurality of circular grooves 10 are arranged on the surface of the annular groove 6 , a small annular groove 11 is arranged on the surface of the annular groove 6 , and a 12 is arranged inside the annular groove 6 . The annular groove 6 is the movable range of the clamping block 5 , and the small annular groove 11 is the movable range of the connecting block 4 .

[0028] Furthermore, the installation position of the connecting block 4 corresponds to the position of the circular groove 10 , and the size of the clamping block 5 is the same as that of the circular groove 10 , and the clamping block 5 enters into the annular groove 6 through the circular groove.

[0029] Furthermore, a plurality of empty grooves 8 are arranged on the surface of the annular groove 6, and the lower end of the empty groove 8 passes through the No. 1 motor punching sheet 1, and the diameter of the empty groove 8 is smaller than the circular groove 10, and a fixing pin 9 is installed inside the empty groove 8, and the fixing pin 9 is installed inside the empty groove 8, and the fixing pin 9 connects the No. 1 motor punching sheet 1 and the No. 2 motor punching sheet 7.

[0030] Furthermore, four connecting blocks 4 are provided, and four corresponding empty slots 8 are provided. Fixing pins 9 are installed inside the empty slots 8 , and the fixing pins 9 fix the connecting block 4 .

[0031] Furthermore, the staggered snap-fit ​​structure includes a connecting block 4, a snap-fit ​​block 5, an annular groove 6 and a fixing pin 9. The connecting block 4 is arranged at the lower end of the No. 1 motor punching sheet 1, and the snap-fit ​​block 5 is arranged at the lower end of the connecting block 4. The snap-fit ​​block 5 is installed inside the annular groove 6, which is the basic composition of the staggered snap-fit ​​structure.

[0032] Working principle: Place the No. 1 motor punching sheet 1 on the upper end of the No. 2 motor punching sheet 7, rotate the No. 1 motor punching sheet 1 to adjust it, align the clamping block 5 with the circular groove 10, install the clamping block 5 inside the circular groove 10, rotate the No. 1 motor punching sheet 1, the clamping block 5 moves inside the circular groove 10, and the connecting block 4 moves inside the small annular groove 11. The clamping block 5 touches the fixed block 12 during rotation, stops rotating, and inserts the fixing pin 9 downward along the empty groove 8. The fixing pin 9 fixes the No. 1 motor punching sheet 1 and the No. 2 motor punching sheet 2.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushless motor punching sheet, comprising a first motor punching sheet (1), a plurality of support rods (2) are arranged outside the first motor punching sheet (1), a first notch (3) is arranged at the center of the first motor punching sheet (1), a second motor punching sheet (7) is installed at the lower end of the first motor punching sheet (1), and the characteristics are as follows: Also includes: The annular groove is provided with a connecting block (4) on the lower surface of the first motor punching sheet (1), a clamping block (5) is installed at the lower end of the connecting block (4), the clamping block (5) is installed inside the annular groove (6), and the annular groove (6) is provided on the surface of the support rod (2); A structure for fixing a No. 1 motor punching sheet (1), comprising at least one offset clamping structure.

2. A brushless motor punching sheet according to claim 1, characterized in that: The upper end of the No. 1 motor punching sheet (1) is provided with an annular groove (6), the lower end of the No. 1 motor punching sheet (1) is installed with a connecting block (4), and the No. 1 motor punching sheet (1) and the No. 2 motor punching sheet (7) are arranged in the same shape.

3. The brushless motor punching sheet according to claim 1, characterized in that: A plurality of circular grooves (10) are arranged on the surface of the annular groove (6), a small annular groove (11) is arranged on the surface of the annular groove (6), and (12) is arranged inside the annular groove (6).

4. The brushless motor punching sheet according to claim 1, characterized in that: The installation position of the connecting block (4) corresponds to the position of the circular groove (10), and the size of the clamping block (5) is the same as that of the circular groove (10).

5. The brushless motor punching sheet according to claim 1, characterized in that: A plurality of empty grooves (8) are arranged on the surface of the annular groove (6), and the lower ends of the empty grooves (8) penetrate the No. 1 motor punching sheet (1), and the diameter of the empty grooves (8) is smaller than that of the circular grooves (10), and a fixing pin (9) is installed inside the empty grooves (8).

6. The brushless motor punching sheet according to claim 1, characterized in that: The connecting blocks (4) are provided in four numbers, and correspondingly, four empty slots (8) are provided.

7. The brushless motor punching sheet according to claim 1, characterized in that: The dislocation clamping structure comprises a connecting block (4), a clamping block (5), an annular groove (6) and a fixing pin (9); the connecting block (4) is arranged at the lower end of the first motor punching sheet (1); the clamping block (5) is arranged at the lower end of the connecting block (4); and the clamping block (5) is installed inside the annular groove (6).

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