Motor structure

Abstract

The utility model discloses a motor structure, and relates to the technical field of motors. The motor structure comprises a shell assembly which is provided with a rotating shaft hole and a power supply hole; the motor body is fixedly mounted in the shell assembly; the driving end of the motor body is connected with a driving rotating shaft, and the driving rotating shaft extends to the outside of the shell assembly through the rotating shaft hole; the dustproof cover is fixedly arranged on the driving rotating shaft in a sleeving mode, and the dustproof cover is located outside the shell assembly; the dust cover is used for covering the rotating shaft hole; the dustproof sleeve is installed in the power supply hole in a sealed mode, a through hole part is formed in the middle of the dustproof sleeve in a penetrating mode, and an external power line penetrates through the through hole part so that the power line can be electrically connected with the motor body; the inner wall of the through hole part is attached to the power line. According to the technical scheme provided by the utility model, the dustproof performance of the motor structure can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor structure. Background Technology

[0002] An electric motor is a drive device that converts electrical energy into mechanical energy. Its main function is to generate driving torque to serve as a power source for electrical appliances or various machines. A typical electric motor structure includes a housing assembly, a motor body, and a drive shaft. The motor body is installed inside the housing assembly, and the drive shaft is mounted on the drive end of the motor body and extends to the outside of the housing assembly, transmitting power externally through the drive shaft. A power supply port is also provided on the side of the housing assembly so that an external power cord can be electrically connected to the motor body located inside the housing assembly.

[0003] In existing technologies, the sealing effect at the connection between the drive shaft and power cord and the housing assembly is not ideal, allowing dust or carbon particles to easily enter the housing assembly from these connections and adhere to the motor body surface, causing short circuits and potential safety accidents during use. Therefore, a new motor structure is urgently needed to effectively improve dustproof performance.

[0004] It should be noted that the above content is only used to help understand the technical solution of this utility model, and does not represent an admission that the above content is prior art. Utility Model Content

[0005] The main purpose of this invention is to propose a motor structure that effectively improves the dustproof performance of the motor structure.

[0006] To achieve the above objectives, this utility model proposes a motor structure;

[0007] Specifically, the motor structure includes:

[0008] The housing assembly is provided with a pivot hole and a power supply hole;

[0009] The motor body is fixedly installed inside the housing assembly; the drive end of the motor body is connected to a drive shaft, and the drive shaft extends to the outside of the housing assembly through the shaft hole;

[0010] A dust cover is fixedly sleeved on the drive shaft, and the dust cover is located outside the housing assembly; the dust cover is used to cover the shaft hole;

[0011] A dust cover is sealed and installed on the power supply hole. The dust cover has a through hole in the middle for an external power cord to pass through so that the power cord can be electrically connected to the motor body. The inner wall of the through hole is in contact with the power cord.

[0012] In one embodiment, the housing assembly has an outward protrusion, and the pivot hole is disposed on the outward protrusion end face of the outward protrusion; the dust cover is disposed on the outside of the outward protrusion, and a preset gap is provided between the inner wall of the dust cover and the outer wall of the outward protrusion.

[0013] In one embodiment, the inner wall of the dust cover is provided with a brush portion, and the free end of the brush portion is in contact with the outer wall of the protruding portion.

[0014] In one embodiment, the drive shaft has a protruding abutment portion disposed between the dust cover and the protruding portion, the abutment portion being used to restrict the dust cover from moving toward the protruding portion; and the dust cover and the drive shaft are interference-fitted.

[0015] In one embodiment, the motor structure further includes a limiting ring, which is fixedly sleeved on the drive shaft and located on the side of the dust cover away from the housing assembly; the limiting ring is used to abut against an external fitting, wherein the fitting is mounted on the drive shaft.

[0016] In one embodiment, the dust cover includes a connecting portion and an extension portion connected together, wherein the extension portion is located outside the housing assembly; the through hole portion is disposed through the connecting portion and the extension portion; the connecting portion includes a first connector, a second connector and a third connector arranged sequentially, wherein the cross-sectional area of ​​the second connector is smaller than the cross-sectional areas of the first connector and the third connector, and the outer wall of the second connector is in contact with the inner wall of the power supply hole; the first connector and the third connector are respectively located on the inner and outer sides of the housing assembly, and the first connector and the third connector are combined to clamp the shell wall of the housing assembly.

[0017] In one embodiment, the end of the extension closer to the connecting portion is defined as the first end, and the end of the extension farther from the connecting portion is defined as the second end; the diameter of the through hole gradually decreases from the first end to the second end of the extension.

[0018] In one embodiment, the dust cover is made of an elastically deformable material.

[0019] In one embodiment, the housing assembly includes a first housing and a second housing, the pivot hole being disposed on the side of the first housing away from the second housing; the first housing is provided with a first flange, the second housing is provided with a second flange, and the first flange and the second flange are fixed to each other by a plurality of bolts to fix the first housing and the second housing in a fixed connection.

[0020] In one embodiment, the first flange and the second flange are respectively provided with a protrusion and a recess on opposite sides. The protrusion and the recess are annular in structure and are coaxially arranged around the axis of the first flange. The protrusion and the recess are fitted together.

[0021] In one embodiment, the cavity of the recess is filled with a sealant layer.

[0022] The technical solution of this utility model involves two aspects. Firstly, a dust cover is fixedly fitted onto the drive shaft and located outside the housing assembly. The dust cover covers the shaft hole to prevent dust or carbon particles from entering the housing assembly from the connection point between the drive shaft and the housing assembly. Secondly, a dust sleeve is provided, sealed and installed at the power supply hole. The dust sleeve has a through-hole in its center, allowing an external power cord to pass through and electrically connect to the motor body, enabling the motor to operate. The inner wall of the through-hole fits snugly against the power cord to prevent dust or carbon particles from entering the housing assembly from the connection point between the power cord and the housing assembly. Through the combined effect of the dust cover and dust sleeve, the dustproof performance of the motor structure is effectively improved. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of an embodiment of the motor structure provided by this utility model;

[0025] Figure 2 An exploded view of an embodiment of the motor structure provided by this utility model;

[0026] Figure 3 A schematic diagram of the internal structure of one embodiment of the motor structure provided by this utility model;

[0027] Figure 4 A second internal structural schematic diagram of an embodiment of the motor structure provided by this utility model;

[0028] Figure 5 A schematic diagram of the internal structure of the dust cover in one embodiment of the motor structure provided by this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Housing assembly; 110. Shaft hole; 120. Power supply hole; 130. Outward protrusion; 140. First housing; 141. First flange; 142. Protrusion; 150. Second housing; 151. Second flange; 152. Recess; 153. Sealing layer; 160. Bolt; 200. Motor body; 210. Drive shaft; 211. Abutment part; 300. Dust cover; 310. Preset gap; 320. Brush part; 400. Dust sleeve; 410. Through hole; 420. Connecting part; 421. First connector; 422. Second connector; 423. Third connector; 430. Extension; 500. Power cord; 600. Limiting ring;

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, it should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] In existing technologies, the sealing effect at the connection between the drive shaft and power cord and the housing assembly is not ideal, allowing dust or carbon particles to easily enter the housing assembly from these connections and adhere to the motor body surface, causing short circuits and potential safety accidents during use. Therefore, a new motor structure is urgently needed to effectively improve dustproof performance.

[0036] To solve the above-mentioned technical problems, this utility model proposes a motor structure.

[0037] Please see Figures 1 to 2 In one embodiment of this utility model, the motor structure includes:

[0038] The housing assembly 100 is provided with a pivot hole 110 and a power supply hole 120;

[0039] The motor body 200 is fixedly installed inside the housing assembly 100; the drive end of the motor body 200 is connected to a drive shaft 210, and the drive shaft 210 extends to the outside of the housing assembly 100 through the shaft hole 110.

[0040] A dust cover 300 is fixedly sleeved on the drive shaft 210, and the dust cover 300 is located outside the housing assembly 100; the dust cover 300 is used to cover the shaft hole 110.

[0041] A dust cover 400 is sealed and installed on the power supply hole 120. The dust cover 400 has a through hole 410 in the middle, which is used for the external power cord 500 to pass through so that the power cord 500 can be electrically connected to the motor body 200. The inner wall of the through hole 410 is in close contact with the power cord 500.

[0042] The technical solution of this utility model involves, on the one hand, setting a dust cover 300, which is fixedly sleeved on the drive shaft 210 and located outside the housing assembly 100; the dust cover 300 covers the shaft hole 110 to prevent dust or carbon particles from entering the housing assembly 100 from the connection between the drive shaft 210 and the housing assembly 100; on the other hand, setting a dust sleeve 400, which is sealed and installed in the power supply hole 120, wherein the dust sleeve 400 has a through hole 410 in the middle, which is used for the external power cord 500 to pass through so that the power cord 500 is electrically connected to the motor body 200 to realize the energization and operation of the motor body 200; the inner wall of the through hole 410 fits against the power cord 500 to prevent dust or carbon particles from entering the housing assembly 100 from the connection between the power cord 500 and the housing assembly 100. The combined effect of the dust cover 300 and the dust sleeve 400 can effectively improve the dustproof performance of the motor structure.

[0043] As a preferred embodiment of the above embodiments, refer to the appendix. Figure 4 The housing assembly 100 has an outward protrusion 130, and a pivot hole 110 is provided on the outward protruding end face of the outward protrusion 130. A dust cover 300 is provided on the outside of the outward protrusion 130, and a preset gap 310 is provided between the inner wall of the dust cover 300 and the outer wall of the outward protrusion 130. With this configuration, by covering the entire outside of the outward protrusion 130 with the dust cover 300, it is difficult for dust or carbon particles to enter the interior of the housing assembly 100 through the connection between the drive pivot 210 and the housing assembly 100. At the same time, in order to avoid rigid contact between the dust cover 300 and the outward protrusion 130, which would affect the rotation speed of the drive pivot 210, this embodiment provides a preset gap 310 between the inner wall of the dust cover 300 and the outer wall of the outward protrusion 130. The preset gap 310 is used to separate the dust cover 300 and the outward protrusion 130 from each other to avoid rigid contact.

[0044] Furthermore, the inner wall of the dust cover 300 is provided with a brush portion 320, the free end of which contacts the outer wall of the protrusion 130. This arrangement takes into account the preset gap 310 between the dust cover 300 and the protrusion 130, which may allow dust or carbon particles to enter the connection between the drive shaft 210 and the housing assembly 100. Based on this consideration, this embodiment provides a brush portion 320 on the inner wall of the dust cover 300, with the free end of the brush portion 320 contacting the outer wall of the protrusion 130. Since the brush portion 320 is made of soft material, even if the free end of the brush portion 320 contacts the outer wall of the protrusion 130, it will not significantly affect the rotation speed of the drive shaft 210. Simultaneously, the brush portion 320 can also prevent dust or carbon particles from passing through the preset gap 310, thereby further improving the dustproof performance of the motor structure.

[0045] Furthermore, the drive shaft 210 is provided with an outwardly protruding abutment portion 211, which is disposed between the dust cover 300 and the outwardly protruding portion 130. The abutment portion 211 is used to restrict the dust cover 300 from moving towards the outwardly protruding portion 130. With this configuration, the abutment portion 211 restricts the dust cover 300 from moving towards the outwardly protruding portion 130, thereby preventing the dust cover 300 and the outwardly protruding portion 130 from coming into contact with each other, thus ensuring the service life of the motor. Understandably, since the dust cover 300 is fixedly sleeved on the drive shaft 210, the dust cover 300 rotates along with the drive shaft 210. However, the protruding part 130, which is part of the housing assembly 100, is fixed. If the dust cover 300 and the protruding part 130 come into contact with each other, on the one hand, the dust cover 300 will cause wear on the protruding part 130, and on the other hand, the rotation speed of the dust cover 300 will be hindered and reduced, which in turn will lead to a decrease in the rotation speed of the drive shaft 210 that is fixedly connected to it. The combination of these two factors will result in a reduction in the service life of the motor.

[0046] Furthermore, the dust cover 300 is interference-fitted with the drive shaft 210. This arrangement ensures that the dust cover 300 can be securely fitted onto the drive shaft 210, preventing displacement of the dust cover 300 during the rotation of the drive shaft 210.

[0047] As a preferred embodiment of the above embodiments, refer to the appendix. Figure 4 The motor structure also includes a limiting ring 600, which is fixedly sleeved on the drive shaft 210 and located on the side of the dust cover 300 away from the housing assembly 100. The limiting ring 600 is used to abut against external components (not shown in the attached drawings), which are mounted on the drive shaft 210. This arrangement prevents interference friction between the components and the dust cover 300, ensuring the rotational speed of the components. Understandably, the aforementioned components can refer to rotating parts such as fan blades or transmission gears.

[0048] Furthermore, the limiting ring 600 has a C-shaped structure, and the inner circle of the limiting ring 600 is smaller than the diameter of the drive shaft 210. With this configuration, the limiting ring 600 is inserted into the drive shaft 210 from the side through a notch in the C-shaped structure. Because the inner circle of the limiting ring 600 is smaller than the diameter of the drive shaft 210, the inner circle of the limiting ring 600 is stretched and deformed by the drive shaft 210. At the same time, the limiting ring 600 is firmly locked into the drive shaft 210 due to its own deformation, resulting in an interference fit between the limiting ring 600 and the drive shaft 210, ensuring that the position between the limiting ring 600 and the drive shaft 210 is firm and difficult to move.

[0049] As a preferred embodiment of the above embodiments, refer to the appendix. Figure 5The dust cover 400 includes a connecting portion 420 and an extension portion 430 connected together, wherein the extension portion 430 is located outside the housing assembly 100; a through hole portion 410 is provided through the connecting portion 420 and the extension portion 430; the connecting portion 420 includes a first connector 421, a second connector 422 and a third connector 423 arranged in sequence, wherein the cross-sectional area of ​​the second connector 422 is smaller than the cross-sectional area of ​​the first connector 421 and the third connector 423, and the outer wall of the second connector 422 is in contact with the inner wall of the power supply hole 120; the first connector 421 and the third connector 423 are respectively located on the inner and outer sides of the housing assembly 100, and the first connector 421 and the third connector 423 are combined to clamp the shell wall of the housing assembly 100. With this configuration, the connecting part 420 overcomes its own deformation, allowing its first connecting member 421 to move through the power supply hole 120 into the housing assembly 100. This allows the first connecting member 421 and the third connecting member 423 to combine and clamp the shell wall of the housing assembly 100, thus achieving the connection between the connecting part 420 and the housing assembly 100. Since the outer wall of the second connecting member 422 fits into the inner wall of the power supply hole 120, it ensures that dust and carbon particles enter the housing assembly 100 through the connection between the second connecting member 422 and the housing assembly 100. The above structure is simple and highly practical.

[0050] Furthermore, the end of the extension 430 closest to the connecting portion 420 is defined as the first end, and the end of the extension 430 furthest from the connecting portion 420 is defined as the second end; the diameter of the through hole 410 gradually decreases from the first end to the second end of the extension 430. With this configuration, since the diameter of the through hole 410 gradually decreases from the first end to the second end of the extension 430, the through hole 410 has a tapered structure. This tapered structure serves two purposes: firstly, it guides the power cable 500 as it is introduced from inside the housing assembly 100 to the outside of the housing assembly 100; secondly, the gradually decreasing diameter gradually seals and encloses the power cable 500, ensuring that the inner wall of the through hole 410 fits snugly against the power cable 500, thus guaranteeing the successful implementation of the technical solution of this application.

[0051] Furthermore, the dust cover 400 is made of a deformable material. This design allows the dust cover to overcome its own deformation, enabling the first connector 421 to move through the power supply hole 120 into the housing assembly 100, ensuring an effective connection between the connector 420 and the housing assembly 100. Simultaneously, since the power cord 500 requires bending in actual installation scenarios, making the dust cover 400 a deformable material allows the extension 430 to also bend along with the power cord 500, thus improving the flexibility of this application.

[0052] As a preferred embodiment of the above embodiments, refer to the appendix. Figure 3 The housing assembly 100 includes a first housing 140 and a second housing 150. A shaft hole 110 is located on the side of the first housing 140 away from the second housing 150. The first housing 140 has a first flange 141, and the second housing 150 has a second flange 151. The first flange 141 and the second flange 151 are fixed together by several bolts 160, thus fixing the first housing 140 and the second housing 150 together. This configuration divides the housing assembly 100 into the first housing 140 and the second housing 150, facilitating the installation of the motor body 200 into the housing assembly 100. The first housing 140 and the second housing 150 are then fixedly connected by the installation of the first flange 141 and the second flange 151. Flange connections can withstand higher pressure and temperature, ensuring the stability and reliability of the connection. Furthermore, compared to welding, flange connections allow for easy disassembly without damaging internal parts, facilitating installation, inspection, and maintenance. The power supply hole 120 can be located in either the first housing 140 or the second housing 150; this application does not specifically limit its location.​​

[0053] Furthermore, the first flange 141 and the second flange 151 are respectively provided with a protrusion 142 and a recess 152 on opposite sides. The protrusion 142 and the recess 152 are annular in structure and coaxially arranged around the axis of the first flange 141. The protrusion 142 and the recess 152 fit together. This arrangement facilitates the mutual positioning of the first flange 141 and the second flange 151 through the fitting of the annular protrusion 142 and the recess 152, which is beneficial to improving installation efficiency. It is understood that the protrusion 142 can be located on the first flange 141 and the recess 152 on the second flange 151; or the protrusion 142 can be located on the second flange 151 and the recess 152 on the first flange 141; this application does not impose specific limitations on this.

[0054] Furthermore, the cavity inside the recess 152 is filled with a sealant layer 153. With this configuration, during the assembly of the first flange 141 and the second flange 151, the protrusion 142 compresses the sealant layer 153 in the recess 152, thereby achieving a sealed connection between the first flange 141 and the second flange 151, preventing dust and carbon particles from entering the housing through the connection between the first flange 141 and the second flange 151.

[0055] It should be noted that other aspects of the motor structure disclosed in this utility model are existing technologies and will not be described in detail here.

[0056] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any application of this utility model directly or indirectly in other related technical fields is included within the patent protection scope of this utility model.

Claims

1. A motor structure, characterized in that, The motor structure includes: The housing assembly is provided with a pivot hole and a power supply hole; The motor body is fixedly installed inside the housing assembly; the drive end of the motor body is connected to a drive shaft, and the drive shaft extends to the outside of the housing assembly through the shaft hole; A dust cover is fixedly sleeved on the drive shaft, and the dust cover is located outside the housing assembly; the dust cover is used to cover the shaft hole; A dust cover is sealed and installed on the power supply hole. The dust cover has a through hole in the middle for an external power cord to pass through so that the power cord can be electrically connected to the motor body. The inner wall of the through hole is in contact with the power cord.

2. The motor structure as described in claim 1, characterized in that: The housing assembly has an outward protrusion, and the pivot hole is located on the outward protrusion end face of the outward protrusion; the dust cover is located on the outside of the outward protrusion, and a preset gap is provided between the inner wall of the dust cover and the outer wall of the outward protrusion.

3. The motor structure as described in claim 2, characterized in that: The inner wall of the dust cover is provided with a brush section, and the free end of the brush section is in contact with the outer wall of the protruding part.

4. The motor structure as described in claim 2, characterized in that: The drive shaft has a protruding abutment portion, which is disposed between the dust cover and the protruding portion. The abutment portion is used to restrict the dust cover from moving towards the protruding portion. The dust cover and the drive shaft are interference-fitted.

5. The motor structure as described in claim 1, characterized in that: The motor structure also includes a limiting ring, which is fixedly sleeved on the drive shaft and located on the side of the dust cover away from the housing assembly; the limiting ring is used to abut against external fittings, wherein the fittings are installed on the drive shaft.

6. The motor structure as described in claim 1, characterized in that: The dust cover includes a connecting portion and an extension portion connected together, wherein the extension portion is located outside the housing assembly; the through hole portion is disposed through the connecting portion and the extension portion; The connecting part includes a first connector, a second connector, and a third connector arranged in sequence. The cross-sectional area of ​​the second connector is smaller than that of the first connector and the third connector, and the outer wall of the second connector is in contact with the inner wall of the power supply hole. The first connector and the third connector are located on the inner and outer sides of the housing assembly, respectively, and the first connector and the third connector are combined to clamp the shell wall of the housing assembly.

7. The motor structure as described in claim 6, characterized in that: The end of the extension closer to the connecting portion is defined as the first end, and the end of the extension farther from the connecting portion is defined as the second end; the diameter of the through hole gradually decreases from the first end to the second end of the extension.

8. The motor structure as described in any one of claims 6 or 7, characterized in that: The dust cover is made of a resilient and deformable material.

9. The motor structure as described in claim 1, characterized in that: The housing assembly includes a first housing and a second housing. The pivot hole is located on the side of the first housing away from the second housing. The first housing is provided with a first flange, and the second housing is provided with a second flange. The first flange and the second flange are fixed to each other by a plurality of bolts so that the first housing and the second housing are fixedly connected.

10. The motor structure as described in claim 9, characterized in that: The first flange and the second flange are respectively provided with a protrusion and a recess on their opposite sides. The protrusion and the recess are in the form of annular structure and are coaxially arranged around the axis of the first flange. The protrusion and the recess are fitted together. Furthermore, the cavity inside the recessed portion is filled with a sealant layer.

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