Reliable dustproof and anti-drop brushless motor

Abstract

The utility model aims to provide a reliable dustproof and anti-drop brushless motor, which comprises a stator seat and a rotating assembly, a bearing is arranged in the stator seat, one end face of the stator seat is provided with a first circular ring, and the rotating assembly comprises a rotor seat, a clamping pad, a forward fastener, a reverse fastener and a bearing cover. Two second circular rings distributed at intervals are arranged on the side, close to the stator base, of the rotor base, when part of the structure of the rotor base is rotationally arranged in the bearing, the first circular ring is located between the two second circular rings, and the forward fastener penetrates through the clamping pad and is in threaded connection with the rotor base, so that the clamping pad is clamped with the bearing; the reverse fastening piece penetrates through the clamping pad and is in threaded connection with the rotor seat, the reverse fastening piece abuts against the forward fastening piece, the bearing cover is arranged at the end, away from the first circular ring, of the stator seat, and the bearing cover is used for shielding the bearing. Therefore, the reliable dustproof and anti-drop brushless motor is provided with a dustproof structure, and can meet the requirement of large load.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a reliable dust-proof and anti-loosening brushless motor. Background Art

[0002] With the development of unmanned technology, it has been gradually applied in the agricultural field. Agricultural drones can not only be used for spraying pesticides, applying fertilizers, sowing seeds, and spreading feed, but also for monitoring farmland information, including monitoring of pests and diseases, irrigation conditions, and the growth of crops. Remote sensing technology is used to conduct aerial photography of large areas of farmland, so as to understand various indicators of crops based on aerial photos and videos. In addition, drones also demonstrate their advantages of automated operation and improved work efficiency in fruit tree planting.

[0003] However, since drones applied in agriculture need to work outdoors in high-humidity, high-dust, and heavy-load working environments for a long time, there are high requirements for the connection structure between the rotor and the stator of the drone. That is, it is necessary to have a dust-proof function to prevent dust from entering the bearings of the connection structure or chemicals such as pesticides from entering and corroding the bearings, and also to meet the demand for large loads. However, the existing brushless motors cannot meet the above requirements. Therefore, in order to solve the above problems, the reliable dust-proof and anti-loosening brushless motor of the present application is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a reliable dust-proof and anti-loosening brushless motor with a dust-proof structure and capable of meeting the demand for large loads.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A reliable dust-proof and anti-loosening brushless motor, comprising:

[0007] A stator base, a bearing is arranged in the stator base, and a first ring is arranged on one end face of the stator base;

[0008] A rotating assembly, the rotating assembly includes a rotor base, a clamping pad, a forward fastener, a reverse fastener, and a bearing cover. Two second rings are arranged at intervals on the side of the rotor base close to the stator base. When a part of the structure of the rotor base is rotatably arranged in the bearing, the first ring is located between the two second rings. The forward fastener passes through the clamping pad and is screwed onto the rotor base to make the clamping pad clamp the bearing. The reverse fastener passes through the clamping pad and is screwed onto the rotor base, and the reverse fastener abuts against the forward fastener. The bearing cover is arranged on the end of the stator base away from the first ring, and the bearing cover is used to shield the bearing.

[0009] Optionally, the rotor seat includes a rotating shaft and a rotor cover. The rotating shaft is rotatably arranged in the bearing, the rotor cover is arranged on the rotating shaft, and the two second rings are located on a side surface of the rotor cover close to the stator seat.

[0010] Optionally, a knurled surface is arranged on an outer side wall of the rotating shaft, and a mounting hole is formed in the rotor cover. The knurled surface is in interference fit with the mounting hole.

[0011] Optionally, a positioning middle hole is axially formed in the rotating shaft and opens outward.

[0012] Optionally, the rotor seat further includes a casing and a plurality of magnetic pieces. One end of the casing is arranged on the rotor cover, the other end of the casing is sleeved on an outer side wall of the stator seat, and the magnetic pieces are arranged on an inner side wall of the casing at intervals and are all in contact with the rotor cover.

[0013] Optionally, a plurality of spaced-apart spacer columns are arranged on a side surface of the rotor cover close to the casing, so that a spacer groove is formed between any two adjacent spacer columns, and the magnetic pieces are respectively located in the spacer grooves.

[0014] Optionally, the rotor seat further includes a retaining ring, and the retaining ring is arranged on the inner side wall of the casing so that the retaining ring abuts against the magnetic pieces.

[0015] Optionally, a plurality of wire winding seats are arranged on an outer side wall of the stator seat, the wire winding seats are equidistantly distributed, a coil is respectively sleeved on each wire winding seat, and the coils are respectively aligned with the magnetic pieces.

[0016] Optionally, the thread of the forward fastener is opposite to the thread of the reverse fastener.

[0017] Optionally, there are two bearings, and a gap is arranged between the two bearings.

[0018] Compared with the prior art, the utility model has at least the following advantages:

[0019] The reliable dust-proof and anti-disengagement brushless motor of the present utility model includes a stator base and a rotating assembly. A bearing is arranged inside the stator base, and a first ring is arranged on one end face of the stator base. The rotating assembly includes a rotor base, a clamping pad, a forward fastener, a reverse fastener, and a bearing cover. Two second rings spaced apart are arranged on the side of the rotor base close to the stator base. When a part of the structure of the rotor base is rotatably arranged inside the bearing, the first ring is located between the two second rings. The forward fastener passes through the clamping pad and is screwed onto the rotor base to make the clamping pad clamp the bearing. The reverse fastener passes through the clamping pad and is screwed onto the rotor base, and the reverse fastener abuts against the forward fastener. The bearing cover is arranged on the end of the stator base far from the first ring, and the bearing cover is used to shield the bearing. In this way, by setting the structure in which the first ring and the second ring are staggered, when the rotor base rotates relative to the stator base, it can effectively prevent dust, water, etc. from passing over the first ring and the second ring and entering the bearing. And through the combined action of the clamping pad, the forward fastener, and the reverse fastener, it can effectively prevent the rotor base from disengaging from the stator base. Finally, the bearing is shielded by the bearing cover to achieve dust prevention and prevent the silicone wire from contacting rotating parts such as the clamping pad. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0021] Figure 1 Structural schematic diagram of the reliable dust-proof and anti-disengagement brushless motor according to an embodiment of the present utility model;

[0022] Figure 2 is Figure 1 Schematic cross-sectional structure diagram of the shown reliable dust-proof and anti-disengagement brushless motor;

[0023] Figure 3 Partial structural schematic diagram of the rotating assembly according to an embodiment of the present utility model;

[0024] Figure 4 Structural schematic diagram of the rotor cover according to an embodiment of the present utility model.

[0025] Explanation of the reference numerals:

[0026] 10. Reliable dust-proof and non-detachable brushless motor; 100. Stator seat; 200. Rotating assembly; 300. Bearing; 400. First ring; 210. Rotor seat; 220. Positioning pad; 230. Forward fastener; 240. Reverse fastener; 250. Bearing cover; 260. Second ring; 211. Rotating shaft; 212. Rotor cover; 2111. Knurled surface; 2121. Mounting hole; 2112. Central positioning hole; 213. Machine housing; 214. Magnetic sheet; 215. Spacer column; 216. Pressing ring; 500. Winding seat; 600. Coil. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation to the present utility model.

[0028] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0030] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "coupling", "fixing", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0031] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings.

[0032] As Figure 1 and Figure 2 shown, a reliable dust-proof and anti-loosening brushless motor 10 includes a stator base 100 and a rotating assembly 200. A bearing 300 is arranged in the stator base 100. A first ring 400 is arranged on one end face of the stator base 100. The rotating assembly 200 includes a rotor base 210, a clamping pad 220, a forward fastener 230, a reverse fastener 240 and a bearing cover 250. Two second rings 260 are arranged at intervals on the side of the rotor base 210 close to the stator base 100. When a part of the structure of the rotor base 210 is rotatably arranged in the bearing 300, the first ring 400 is located between the two second rings 260. The forward fastener 230 passes through the clamping pad 220 and is screwed onto the rotor base 210 to make the clamping pad 220 clamp the bearing 300. The reverse fastener 240 passes through the clamping pad 220 and is screwed onto the rotor base 210, and the reverse fastener 240 abuts against the forward fastener 230. The bearing cover 250 is arranged on the end of the stator base 100 away from the first ring 400, and the bearing cover 250 is used to shield the bearing 300.

[0033] It should be noted that the rotor seat 210 is installed in the stator seat 100 through the bearing 300, so that the rotor seat 210 can rotate relative to the stator seat 100. A raised first ring 400 is provided on one end face of the stator seat 100 close to the rotor seat 210, and two raised second rings 260 are provided on one end face of the rotor seat 210 close to the stator seat 100, and the two second rings 260 are provided with a gap. In this way, the first ring 400 is located between the two second rings 260, so that the two second rings 260 and the first ring 400 are in an interlaced protective structure. In this way, when the rotor seat 210 rotates relative to the stator seat 100, dust, water, etc. can be effectively prevented from passing over the first ring 400 and the second ring 260 and entering the bearing 300. Further, at the end position where the rotor seat 210 passes through the stator seat 100, the positive fastener 230 first passes through the retaining pad 220 and is screwed and fixed on the rotor seat 210, so that the retaining pad 220 abuts against and clamps the bearing 300. In one embodiment, a plurality of positive fasteners 230 are provided. Further, the reverse fastener 240 also passes through the retaining pad 220 and is screwed and fixed on the rotor seat 210, and the reverse fastener 240 abuts against the positive fastener 230. In one embodiment, the forward fastener 230 and the reverse fastener 240 are both screws, and the thread of the forward fastener 230 is opposite to the thread of the reverse fastener 240, that is, the locking direction of the forward fastener 230 and the reverse fastener 240 is opposite. In this way, under heavy load use, it means that the axial force of the rotor seat 210 relative to the stator seat 100 is large. If the forward fastener 230 has a tendency to loosen, and the above tendency will make the reverse fastener 240 more firmly locked, since the forward fastener 230 is supported by the reverse fastener 240, the forward fastener 230 cannot produce a loosening action. In this way, the rotor seat 210 is effectively prevented from falling off relative to the stator seat 100, and can be reliably applied to medium load use scenarios. Finally, the bearing cover 250 is installed on the end of the stator seat 100 close to the positioning pad 220, so as to use the bearing cover 250 to shield the bearing 300 to achieve dust prevention and prevent the silicone wire from contacting the positioning pad 220 and other rotating parts.

[0034] like Figures 1 to 4 As shown, in one embodiment, the rotor seat 210 includes a rotating shaft 211 and a rotor cover 212 . The rotating shaft 211 is rotatably disposed in the bearing 300 . The rotor cover 212 is disposed on the rotating shaft 211 . Two second rings 260 are located on one side of the rotor cover 212 close to the stator seat 100 .

[0035] It should be noted that the rotating shaft 211 is adapted to be installed in the bearing 300, so that the rotating shaft 211 can rotate relative to the stator seat 100. The rotor cover 212 is fixedly installed on the rotor cover 212 by screws.

[0036] Further, in one embodiment, two bearings 300 are provided, and there is a gap between the two bearings 300. For example, a rotating hole is provided at the axial center position of the stator base 100, and the two bearings 300 are respectively located at both axial ends of the rotating hole. The rotating shaft 211 passes through the two bearings 300 in sequence, thus ensuring the stable rotation of the rotating shaft 211 relative to the stator base 100.

[0037] As Figure 3 shown, in one embodiment, a knurled surface 2111 is provided on the outer sidewall of the rotating shaft 211, and a mounting hole 2121 is provided on the rotor cover 212. The knurled surface 2111 is in interference fit with the mounting hole 2121.

[0038] It should be noted that, in order to ensure the structural strength between the rotating shaft 211 and the rotor cover 212 and prevent them from rotating relative to each other, after applying glue in the mounting hole 2121, the knurled surface 2111 and the mounting hole 2121 are bonded together.

[0039] As Figure 2 shown, in one embodiment, a positioning center hole 2112 is axially provided on the outer side of the rotating shaft 211. Thus, through this positioning center hole 2112, it is convenient to position the paddle clamp during installation.

[0040] As Figures 1 to 3 shown, in one embodiment, the rotor base 210 further includes a housing 213 and a plurality of magnetic sheets 214. One end of the housing 213 is provided on the rotor cover 212, the other end of the housing 213 is sleeved on the outer sidewall of the stator base 100, and the magnetic sheets 214 are spaced apart and arranged on the inner sidewall of the housing 213, and each magnetic sheet 214 abuts against the rotor cover 212.

[0041] It should be noted that the housing 213 is installed on the rotor cover 212 by screws, so that the housing 213 is located on the outer sidewall of the stator base 100. The magnetic sheets 214 are equally spaced and installed on the inner sidewall of the housing 213. The magnetic sheets 214 are permanent magnets.

[0042] As Figure 4 shown, in one embodiment, a plurality of spaced-apart spacer columns 215 are provided on the side surface of the rotor cover 212 close to the housing 213, so that a partition groove is formed between any two adjacent spacer columns 215, and each magnetic sheet 214 is respectively located in each partition groove.

[0043] It should be noted that the spacer columns 215 and the rotor cover 212 are integrally formed. Thus, by simply installing each magnetic sheet 214 in each partition groove, the magnetic sheets 214 can be accurately installed, which can simplify the installation of the magnetic sheets 214.

[0044] As Figure 4As shown, in one embodiment, the rotor base 210 further includes a retaining ring 216 disposed on the inner sidewall of the housing 213 such that the retaining ring 216 abuts against each magnetic sheet 214. Thus, the magnetic sheets 214 are positioned and fixed jointly by the retaining ring 216 and the rotor cover 212. For example, a structure equivalent to the spacer post 215 is also provided on the retaining ring 216.

[0045] As Figure 1 shown, in one embodiment, a plurality of winding bases 500 are provided on the outer sidewall of the stator base 100. The winding bases 500 are equally spaced, and a coil 600 is sleeved on each winding base 500 respectively. Each coil 600 is aligned with each magnetic sheet 214 respectively.

[0046] It should be noted that the winding base 500 and the stator base 100 are of an integrally formed structure, and the distance between any two adjacent winding bases 500 is equal to the distance between any two adjacent magnetic sheets 214. A coil 600 is installed on each winding base 500. Thus, by energizing each coil 600, a magnetic force can be generated, thereby driving the rotor cover 212 fixedly installed with the magnetic sheets 214 to rotate.

[0047] The above-described embodiments merely represent several embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A reliable dust-proof and non-detachable brushless motor, characterized in that, Comprising: A stator base, within which a bearing is provided, and a first ring is provided on one end face of the stator base; A rotating assembly, which includes a rotor base, a clamping pad, a forward fastener, a reverse fastener, and a bearing cover. On one side of the rotor base close to the stator base, two second rings are provided at intervals. When a part of the structure of the rotor base is rotatably arranged within the bearing, the first ring is located between the two second rings. The forward fastener passes through the clamping pad and is screwed onto the rotor base to make the clamping pad clamp the bearing. The reverse fastener passes through the clamping pad and is screwed onto the rotor base, and the reverse fastener abuts against the forward fastener. The bearing cover is provided on the end of the stator base far from the first ring, and the bearing cover is used to shield the bearing.

2. The reliable dust-proof and anti-loosening brushless motor according to claim 1, characterized in that, The rotor base includes a rotating shaft and a rotor cover. The rotating shaft is rotatably arranged within the bearing, the rotor cover is provided on the rotating shaft, and the two second rings are located on the side face of the rotor cover close to the stator base.

3. The reliable dust-proof and non-detachable brushless motor according to claim 2, characterized in that, A knurled surface is provided on the outer side wall of the rotating shaft, and a mounting hole is provided on the rotor cover. The knurled surface and the mounting hole are in interference fit.

4. The reliable dust-proof and anti-loosening brushless motor according to claim 2, characterized in that, A positioning middle hole is axially opened outward on the rotating shaft.

5. The reliable dust-proof and anti-loosening brushless motor according to claim 2, wherein The rotor base further includes a machine shell and a plurality of magnetic sheets. One end of the machine shell is provided on the rotor cover, and the other end of the machine shell is sleeved on the outer side wall of the stator base. Each of the magnetic sheets is arranged at intervals on the inner side wall of the machine shell, and each of the magnetic sheets abuts against the rotor cover.

6. The reliable dust-proof and non-detachable brushless motor according to claim 5, characterized in that, A plurality of spaced-apart spacer columns are provided on the side face of the rotor cover close to the machine shell, so that a partition groove is formed between any two adjacent spacer columns, and each of the magnetic sheets is respectively located within each of the partition grooves.

7. The reliable dust-proof and non-detachable brushless motor according to claim 6, characterized in that, The rotor base further includes a retaining ring, and the retaining ring is provided on the inner side wall of the machine shell to make the retaining ring abut against each of the magnetic sheets.

8. The reliable dust-proof and anti-loosening brushless motor according to claim 5 or 7, characterized in that, A plurality of winding bases are provided on the outer side wall of the stator base, and the winding bases are equidistantly distributed. A coil is respectively sleeved on each of the winding bases, and each of the coils is aligned with each of the magnetic sheets.

9. The reliable dust-proof and brushless motor according to claim 1, wherein, The thread of the forward fastener is opposite to the thread of the reverse fastener.

10. The reliable dust-proof and anti-loosening brushless motor according to claim 1, characterized in that, Two bearings are provided, and there is a space between the two bearings.

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