Fan with protective cover

Abstract

The fan with the protective cover comprises a machine shell, an impeller, a rotating shaft, a motor and the protective cover, a containing cavity is formed in the machine shell, the impeller is axially fixed in the containing cavity through the rotating shaft, one end of the rotating shaft extends to the outer side of the machine shell to be connected with the motor, a supporting limiting piece is arranged on the outer side of the motor, and the protective cover is arranged on the supporting limiting piece. The motor, the rotating shaft and the supporting and limiting piece are coaxial, and the protective cover is arranged on the outer side of the supporting and limiting piece in a sleeving mode and fixes the supporting and limiting piece to the machine shell in the axial direction. By arranging the protective cover, the supporting and limiting piece is axially fixed between the machine shell and the protective cover and does not shake, the supporting and limiting piece only needs to be arranged on the outer side of the motor in a sleeving mode, further assembling is not needed, and after the protective cover and the machine shell are assembled, the supporting and limiting piece can be axially fixed through the protective cover. According to the utility model, on one hand, the assembly of the supporting and limiting piece is simplified, and on the other hand, the protective cover can be conveniently assembled and fixed on the shell, so that the safety of operators during operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology for use in sweeping robots, and in particular to a fan with a protective cover. Background Technology

[0002] The blower in a robotic vacuum cleaner, as its core suction component, is driven by a motor to rotate at high speed, generating strong negative pressure to suck up dust from the floor and collect it through the dust removal system. The blower's structure includes a housing, impeller, shaft, and motor. During the assembly process, supporting and fixing components are typically used to maintain the stability of the shaft and prevent the motor from slipping off. Because the blowers used in robotic vacuum cleaners are relatively small, assembling these components is difficult due to limited operating space and can easily result in finger cuts during assembly. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fan with a protective cover.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A fan with a protective cover includes a casing, an impeller and a shaft, a motor, and a protective cover. The casing has a receiving cavity, and the shaft axially fixes the impeller in the receiving cavity. One end of the shaft extends to the outside of the casing and connects to the motor. A support and limiting member is provided on the outside of the motor. The motor, shaft, and support and limiting member are coaxial. The protective cover is sleeved on the outside of the support and limiting member and axially fixes the support and limiting member to the casing.

[0006] Furthermore, the support limiting component includes a support sleeve and a limiting ring. The support sleeve is fitted over the motor, and the upper edge of the support sleeve is provided with an annular groove. The limiting ring engages with the annular groove.

[0007] Furthermore, the protective cover includes an ear, a cover wall, and a cover. The ear is fixed to the housing, the cover wall connects the ear and the cover, and the size of the cover matches the outer size of the limiting ring.

[0008] Furthermore, the ear, the cover wall, and the cover are integrally formed.

[0009] Furthermore, the cover is provided with a plurality of small through holes, which are evenly distributed on the surface of the cover in a circular array.

[0010] Furthermore, the ear is provided with a protrusion, and the protrusion has a first through hole, through which the ear is fixed to the housing.

[0011] Further, the shell is provided with a recess outside, the recess comprises a first assembly area and a second assembly area, the first assembly area is used for assembling the protective cover, and the second assembly area is used for assembling the motor and the support limiting piece.

[0012] Further, the first assembly area is provided with a ring piece, and the ring piece limits the support limiting piece in the second assembly area.

[0013] Further, the first assembly area is provided with a plurality of bosses, the ring piece is provided with a second through hole corresponding to the bosses, and the second through hole is connected with the bosses.

[0014] Further, the protruding block is matched with the second through hole of the ring piece in size, the boss is provided with an assembly hole in the middle, and the first through hole is fastened and connected with the assembly hole through the second through hole.

[0015] The fan of the utility model, through setting up the protective cover, the support limiting piece is axially fixed between the shell and the protective cover and does not shake, the support limiting piece only needs to be sleeved on the outside of the motor and does not need to be further assembled, after the protective cover and the shell are assembled, the protective cover can axially fix the support limiting piece. The protective cover designed in the utility model simplifies the assembly of the support limiting piece on the one hand, on the other hand, the protective cover itself is convenient to assemble and fix to the shell, and the safety of the operator during operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for the ordinary skilled person in the art, other related drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 To complete the assembly drawing with the protective cover;

[0018] Figure 2 To Figure 1 Fan schematic diagram without assembling the protective cover;

[0019] Figure 3 To Figure 2 Protective cover schematic diagram without assembling the support limiting piece and the ring piece;

[0020] Figure 4 For the protective cover perspective view;

[0021] Figure 5 For the protective cover rear view. DETAILED DESCRIPTION

[0022] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It is noted that the embodiments given herein are only for illustrative purposes and that the present application is not limited thereto.

[0023] It is to be understood that where an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] 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 application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0025] Referring to Figures 1 to 5 A fan with a protective cover, including a casing 1, impeller and shaft 2, motor 3, protective cover 4, the casing 1 has a containing cavity, the shaft 2 is axially fixed in the containing cavity with the impeller, the shaft 2 extends to the outside of the casing 1 and connects the motor 3, the outside of the motor 3 is provided with a supporting limiting piece, the motor 3, the shaft 2 and the supporting limiting piece are coaxial, the protective cover 4 is sleeved outside the supporting limiting piece and axially fixes the supporting limiting piece on the casing 1.

[0026] The design of the fan fixes the supporting limiting piece axially between the casing 1 and the protective cover 4 without shaking by setting the protective cover 4, and the supporting limiting piece only needs to be sleeved on the motor 3 without further assembly, and after the protective cover 4 and the casing 1 are assembled, the protective cover 4 can axially fix the supporting limiting piece. The protective cover 4 designed in the present application simplifies the assembly of the supporting limiting piece on the one hand, and on the other hand, the protective cover 4 itself is convenient to assemble and fix to the casing 1, improving the safety of the operator during operation.

[0027] In an embodiment of the embodiment, the support limiting member comprises a support sleeve 61 and a limiting ring 62, the support sleeve is sleeved outside the motor, the upper edge of the support sleeve is provided with an annular groove, and the limiting ring is clamped with the annular groove. The protective cover 4 comprises an ear part 41, a cover wall 42 and a cover cap 43. The ear part 41 is fixed on the shell 1, the cover wall 42 is connected between the ear part 41 and the cover cap 43, and the size of the cover cap 43 matches the size of the outer side of the limiting ring 62. In this way, the support sleeve 61 provides support for the motor 3 and the rotating shaft 2 connected with the motor 3, avoids position deviation of the motor 3 and the rotating shaft 2 in the vibration process, reduces energy loss and heat generation, prolongs the service life of the machine, and also avoids that the motor 3 slips off the rotating shaft 2 in the vibration process. When the protective cover is fixed on the shell, the support sleeve 61 only needs to be sleeved outside the motor 3, and further fastening with the shell 1 is not required. After the protective cover 4 is fastened with the shell 1, the cover cap is pressed on the support sleeve 61 to fix the support sleeve 61 on the shell 1, and the limiting ring 62 is used for limiting the fastening degree of the protective cover, so as to avoid damage to the support sleeve 61 caused by excessive fastening and excessive pressure.

[0028] In an embodiment of the embodiment, the ear part 41, the cover wall 42 and the cover cap 43 of the protective cover are integrally formed.

[0029] In an embodiment of the embodiment, a plurality of small holes 44 are arranged on the cover cap 43, and the small holes 44 are uniformly arranged in a circular array on the surface of the cover cap 43. The uniformly arranged small holes 44 on the cover cap 43 can not only reduce the weight, but also help heat dissipation.

[0030] In an embodiment of the embodiment, the ear part 41 is provided with a protruding block 46, the protruding block 46 is provided with a first through hole 45, and the ear part 41 is fixed on the shell 1 through the first through hole 45.

[0031] In an embodiment of the embodiment, a recess is arranged on the outer side of the shell 1, the recess comprises a first assembly area 11 and a second assembly area 12, the first assembly area 11 is used for assembling the protective cover 4, and the second assembly area 12 is used for assembling the motor 3 and the support limiting member.

[0032] In an embodiment of the embodiment, a ring piece 5 is arranged on the first assembly area 11, the ring piece 5 limits the support limiting member in the second assembly area 12. A plurality of bosses 13 are arranged on the first assembly area 11, a second through hole 51 corresponding to the bosses 13 is arranged on the ring piece 5, and the second through hole 51 is connected with the bosses 13. It should be noted that the connection mode of the ring piece 13 and the first assembly area 11 can be a connection mode in the prior art and a deformation thereof.

[0033] The protrusion 46 is matched with the second through hole 51 of the ring 5 in size, the boss 13 of the first assembly area 11 of the casing 1 is provided with an assembly hole 14 in the middle, the first through hole 45 of the ear 41 is fastened and connected with the assembly hole 14 through the second through hole 51 on the ring 5, so that the ear 41 is assembled on the ring 5 and is fastened with the ring 5 on the casing 1, after fastening, the cover 43 is pressed on the supporting limiting part 62, so that the supporting limiting part does not need to be further assembled, after the protective cover 4 and the casing 1 are assembled, the protective cover 4 can axially limit the supporting limiting part between the casing 1 and the cover 43.

[0034] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for the ordinary skilled in the art, under the premise of not departing from the utility model concept, several modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A fan with a protective cover, characterized by, The utility model provides a motor protection cover, including casing, impeller and rotating shaft, motor, protective cover, the casing has the accommodation cavity in, the rotating shaft fixes the impeller in the accommodation cavity axially, the rotating shaft one end extends to the casing outside connection motor, the motor outside is provided with support limiting piece, the motor, rotating shaft, support limiting piece coaxial, the protective cover sets up in support limiting piece outside with support limiting piece axial fixed on the casing.

2. The fan with a protective cover according to claim 1, characterized in that, The support limiting piece includes a support sleeve and a limiting ring, the support sleeve is sleeved outside the motor, the upper edge of the support sleeve is provided with an annular groove, and the limiting ring is in size clamping with the limiting ring outside.

3. The fan with a protective cover according to claim 2, characterized in that, The protective cover includes an ear part, a cover wall and a cover cap, the ear part is fixed on the casing, the cover wall is connected with the ear part and the cover cap, and the cover cap is matched with the annular groove in size.

4. The fan with a protective cover according to claim 3, characterized in that, The ear part, the cover wall and the cover cap are integrally formed.

5. The fan with a protective cover according to claim 3, characterized in that, A plurality of small through holes are arranged on the cover cap, and the small through holes are uniformly arranged on the cover cap surface in a circular array.

6. The fan with a protective cover according to claim 3, characterized in that, The ear part is provided with a protruding block, a first through hole is arranged on the protruding block, and the ear part is fixed on the casing through the first through hole.

7. The fan with a protective cover according to claim 6, characterized in that A recess is arranged outside the casing, the recess includes a first assembly area and a second assembly area, the first assembly area is used for assembling the protective cover, and the second assembly area is used for assembling the motor and the support limiting piece.

8. The fan with a protective cover according to claim 7, characterized in that, A ring piece is arranged on the first assembly area, and the ring piece limits the support limiting piece in the second assembly area.

9. The fan with a protective cover according to claim 8, characterized in that, A plurality of convex blocks are arranged on the first assembly area, a second through hole corresponding to the convex block is arranged on the ring piece, and the second through hole is connected with the convex block.

10. The fan with a protective cover according to claim 9, characterized in that The convex block is matched with the second through hole of the ring piece in shape size, a assembly hole is arranged in the middle of the convex block, the first through hole passes through the second through hole and is fastened and connected with the assembly hole.

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