Brushless motor single-side end cover anti-loosening structure

Abstract

The utility model provides a kind of brushless motor single side end cover anti-loosening structure, including end cover, the rear side of the end cover is equipped with stator chip, the front end of the end cover is connected with screw, the middle part of the screw is sleeved with limit card, the rear end of the limit card extends to the middle part inboard of stator chip, first limit hole and second limit hole are communicated after limit pin slides into limit slot, now the installation position locking of limit card is completed by screw on end cover, by embedding of limit card in first limit hole and second limit hole, the anti-deviation anti-loosening treatment of stator chip outside end cover is completed, the design structure is simple and reasonable and convenient production, and its improvement cost is low, and the adaptability to brushless motor product is higher.

Description

Technical Field

[0001] This utility model mainly relates to the field of brushless motor technology, specifically to a brushless motor single-side end cap anti-loosening structure. Background Technology

[0002] The end cap design of the brushless motor employs a flange and groove assembly structure between the end cap and the stator chip. This design allows the stator chip to be rotated outside the end cap for assembly and disassembly. The assembly gap between the flange and groove is typically designed to prevent loosening between the end cap and the stator chip. If the gap is too small, assembly difficulties will occur; if the gap is too large, the end cap and stator chip will not be able to be tightly assembled, resulting in loosening.

[0003] The inventors proposed a single-sided end cap anti-loosening structure for brushless motors. By adding an anti-rotation plate assembly between the end cap and the stator chip, and fixing it to the end cap with screws, the assembly of the end cap and the stator chip is limited, preventing the stator chip from rotating and loosening outside the end cap. Utility Model Content

[0004] 1. Technical problem solved by the utility model: This utility model provides a single-sided end cap anti-loosening structure for a brushless motor, which solves the technical problem of insufficient anti-loosening treatment in the existing assembly of end caps and nail chips.

[0005] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a brushless motor single-sided end cover anti-loosening structure, including an end cover, a stator chip is provided on the rear side of the end cover, a screw is threaded to the front end of the end cover, a limit card is sleeved in the middle of the screw, and the rear end of the limit card extends to the inner side of the middle of the stator chip.

[0006] Furthermore, the outer edge of the rear end of the end cap is fixed with a plurality of limiting pins, and the front part of the end cap is provided with a plurality of anchor holes for mating screws. The end cap is provided with a first limiting hole at a radial position outside the end cap along the anchor holes, and the first limiting hole is mated with a limiting clip.

[0007] Furthermore, a front wire frame is detachably snapped onto the front side of the stator chip, and a rear wire frame is detachably snapped onto the rear end of the front wire frame. The front part of the rear wire frame is detachably snapped onto the rear end of the stator chip. A plurality of second limiting holes are opened in the middle of the stator chip to cooperate with the first limiting hole. The second limiting holes cooperate with the rear end of the limiting card.

[0008] Furthermore, the front frame has multiple limiting grooves in the middle, which cooperate with limiting pins. The front part of the limiting groove extends to the front part of the front frame and forms an opening. The middle part of the front frame is detachably snapped onto the outer side of the end cover.

[0009] Furthermore, an anti-loosening washer is movably fitted into the middle of the screw.

[0010] Furthermore, a bearing is movably connected to the middle of the end cover, the middle of the inner ring of the bearing is movably sleeved with the middle of the machine shaft, and a rotor is detachably connected to the rear end of the machine shaft.

[0011] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This utility model provides a single-sided end cover anti-loosening structure for a brushless motor. The first limiting hole and the second limiting hole are connected after the limiting pin slides into the limiting groove. At this time, the installation position of the limiting card is locked by the screw on the end cover. By embedding the limiting card in the first limiting hole and the second limiting hole, the stator chip is protected against deviation and loosening outside the end cover. This design structure is simple, reasonable and convenient to produce. Its improvement cost is low and it has high adaptability to brushless motor products. The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0012] Figure 1 This is a perspective view of the structure of this utility model; Figure 2 This is a half-sectional perspective view of the front frame structure of this utility model; Figure 3 This is an exploded view of the stator chip structure of this utility model; Figure 4 This is a half-section of the stator chip structure of this utility model. Figure 1 ; Figure 5 This is a half-section of the stator chip structure of this utility model. Figure 2 ; Figure 6 This is an exploded view of the assembly structure of the end cap and the front frame of this utility model; Figure 7 This is a perspective view of the front-line frame structure of this utility model; Figure 8 This is a perspective view of the rotor structure of this utility model.

[0013] Figure label: End cap-1; Limit pin-11; Anchor hole-12; First limit hole-13; Stator chip-2; Second limiting hole-21; Front frame-3; Limiting slot-31; Rear line frame -4; Screw-5; Limiting card -6; Bearing-7; Shaft-8; Rotor-81. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0015] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] See attached document Figure 1-8 This utility model provides a single-sided end cap anti-loosening structure for a brushless motor, including an end cap 1, a stator chip 2 on the rear side of the end cap 1, a screw 5 threadedly connected to the front end of the end cap 1, a limit card 6 sleeved in the middle of the screw 5, and the rear end of the limit card 6 extending to the inner side of the middle of the stator chip 2.

[0018] In this embodiment, a plurality of limiting pins 11 are fixed on the outer edge of the rear end of the end cap 1, and a plurality of anchor holes 12 for mating screws 5 are opened at the front of the end cap 1. A first limiting hole 13 is opened at the radial position outside the end cap 1 along the anchor holes 12, and the first limiting hole 13 is mating with the limiting card 6.

[0019] The engagement of the limiting pin 11 and the limiting groove 31 completes the assembly of the front frame 3 outside the end cover 1 and the axial anti-displacement treatment.

[0020] In this embodiment, a front wire frame 3 is detachably snapped to the front side of the stator chip 2, and a rear wire frame 4 is detachably snapped to the rear end of the front wire frame 3. The front part of the rear wire frame 4 is detachably snapped to the rear end of the stator chip 2. A plurality of second limiting holes 32 that cooperate with the first limiting hole 13 are opened in the middle of the stator chip 2. The second limiting holes 32 cooperate with the rear end of the limiting card 6.

[0021] The front frame 3 and the rear frame 4 work together to complete the assembly of the stator chip 2 on the outside of the end cover 1.

[0022] The first limiting hole 13 and the second limiting hole 32 are connected after the limiting pin 11 slides into the limiting groove 31. At this time, the installation position of the limiting card 6 is locked by the screw 5 on the end cover 1. By embedding the limiting card 6 in the first limiting hole 13 and the second limiting hole 32, the stator chip 2 is protected against deviation and loosening outside the end cover 1. This design is simple, reasonable and convenient to produce. Its improvement costs are low and it has high compatibility with brushless motor products.

[0023] In this embodiment, a plurality of limiting grooves 31 are provided in the middle of the front cable frame 3. The limiting grooves 31 cooperate with the limiting pins 11. The front part of the limiting grooves 31 extends to the front part of the front cable frame 3 and forms an opening. The middle part of the front cable frame 3 is detachably snapped to the outer side of the end cover 1.

[0024] The opening design at the front of the limiting groove 31 facilitates the sliding of the limiting pin 11 into the limiting groove 31, and makes it convenient for workers to complete the external assembly production of the stator chip 2 on the end cover 1 through the assembly of the front frame 3 and the end cover 1.

[0025] In this embodiment, an anti-loosening washer is movably sleeved in the middle of the screw 5.

[0026] Due to the working environment and potential vibrations of the brushless motor, anti-loosening washers are required for the screw 5 to be installed on the end cover 1 to ensure that the limit card 6 can be stably embedded in the first limit hole 13 and the second limit hole 32.

[0027] In this embodiment, a bearing 7 is movably connected to the middle of the end cover 1, the middle of the inner ring of the bearing 7 is movably sleeved with the middle of the machine shaft 8, and a rotor 81 is detachably connected to the rear end of the machine shaft 8.

[0028] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A single-sided end cap anti-loosening structure for a brushless motor, characterized in that: Includes an end cap (1), a stator chip (2) is provided on the rear side of the end cap (1), a screw (5) is threaded to the front end of the end cap (1), a limit card (6) is sleeved in the middle of the screw (5), and the rear end of the limit card (6) extends to the inner side of the middle of the stator chip (2).

2. The anti-loosening structure for the single-sided end cap of the brushless motor according to claim 1, characterized in that: The end cap (1) has multiple limiting pins (11) fixed on the outer edge of its rear end. The end cap (1) has multiple anchor holes (12) for mating screws (5) at its front. The end cap (1) has a first limiting hole (13) at a radial position outside the end cap (1) along the anchor holes (12). The first limiting hole (13) is mated with a limiting card (6).

3. The anti-loosening structure for the single-sided end cap of the brushless motor according to claim 1, characterized in that: The front side of the stator chip (2) is detachably snapped with a front wire frame (3), and the rear end of the front wire frame (3) is detachably snapped with a rear wire frame (4). The front part of the rear wire frame (4) is detachably snapped with the rear end of the stator chip (2). The middle part of the stator chip (2) is provided with a plurality of second limiting holes (32) that cooperate with the first limiting hole (13). The second limiting holes (32) cooperate with the rear end of the limiting card (6).

4. The anti-loosening structure for the single-sided end cap of the brushless motor according to claim 3, characterized in that: The front wire frame (3) has multiple limiting grooves (31) in the middle. The limiting grooves (31) cooperate with the limiting pins (11). The front part of the limiting grooves (31) extends to the front part of the front wire frame (3) and forms an opening. The middle part of the front wire frame (3) is detachably snapped to the outside of the end cover (1).

5. The anti-loosening structure for the single-sided end cap of the brushless motor according to claim 1, characterized in that: The screw (5) is fitted with an anti-loosening washer in the middle.

6. The anti-loosening structure for the single-sided end cap of the brushless motor according to claim 1, characterized in that: The end cap (1) is movably connected to a bearing (7) in the middle. The middle of the inner ring of the bearing (7) is movably sleeved with the middle of the shaft (8). The rear end of the shaft (8) is detachably connected to a rotor (81).

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