CN212867989U

CN212867989U - Ceiling fan, accessory mechanism and cover body structure thereof

Info

Publication number: CN212867989U
Application number: CN202021840323.9U
Authority: CN
Inventors: 张建生; 黄如辉
Original assignee: Foshan Carro Electrical Co Ltd
Current assignee: Foshan Carro Electrical Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-02
Anticipated expiration: 2030-08-28

Abstract

The utility model relates to a ceiling fan, accessory mechanism and lid structure thereof, accessory mechanism are including installation main part and lid structure, and the lid structure includes lid body and cooperation portion, and the cooperation portion wears to locate in the mounting hole of installation main part. The joint portion on the inner wall of the mounting hole can be penetrated through by the communicating groove to be arranged in the joint groove, so that the cover body covers the mounting hole. The clamping groove is in interference fit with the clamping portion, and when the cover body structure is disassembled, the clamping portion can be withdrawn from the clamping groove only when the friction force between the clamping portion and the inner wall of the clamping groove can be overcome by the acting force received by the cover body structure. Because the size in intercommunication groove is greater than the size in joint groove, make joint portion can run through one side of cooperation portion by the intercommunication groove and withdraw from, realize the dismantlement of lid structure for the installation main part. And through the interference fit of joint groove and joint portion, can avoid under no external force or less exogenic action, lead to the lid structure to drop by the installation main part.

Description

Ceiling fan, accessory mechanism and cover body structure thereof

Technical Field

The utility model relates to a ceiling fan technical field especially relates to ceiling fan, accessory mechanism and lid structure thereof.

Background

Ceiling fans are generally installed on ceilings and have the advantages of energy conservation, convenience, practicability and the like. Because the structure of traditional ceiling fan is single, and then more and more ceiling fan increase the accessory structure of illumination etc to further improve the practicality of ceiling fan. However, the accessory structure of the ceiling fan is generally fixed to the main structure of the ceiling fan, which in turn causes inconvenience in the maintenance of the components within the accessory structure.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a ceiling fan, an accessory mechanism and a cover structure thereof, which are convenient for maintenance.

A cover structure of an accessory mechanism, the cover structure comprising:

a cover body; and

cooperation portion, cooperation portion set up in on the lid body, cooperation portion is used for installing in the mounting hole, so that the lid body can cover the mounting hole, seted up on the outer wall of cooperation portion joint groove and with the intercommunication groove that the joint groove is linked together, the intercommunication groove is kept away from the part in joint groove runs through cooperation portion dorsad in the surface of lid body, the joint groove be used for with joint portion interference fit on the mounting hole inner wall, the size in intercommunication groove is greater than the size in joint groove.

In one embodiment, a first abutting portion is arranged on an inner wall of the clamping groove adjacent to the communication groove, and the first abutting portion is used for abutting the clamping portion on the inner wall of the clamping groove.

In one embodiment, a second abutting part is arranged on the outer wall of the matching part and used for abutting against the inner wall of the mounting hole; and/or

The outer wall of the matching part is used for abutting against a second abutting part, wherein the second abutting part is arranged on the inner wall of the mounting hole.

In one embodiment, the communication groove is located on one side of the clamping groove, the matching portion can rotate in the mounting hole from the communication groove to the direction towards the clamping groove, and the communication groove is obliquely arranged relative to the rotation axis of the matching portion.

In one embodiment, a handle portion is disposed on a side of the cover body opposite to the matching portion.

An accessory mechanism, the accessory mechanism comprising:

the mounting structure comprises a mounting main body, a clamping part and a fixing part, wherein the mounting main body is provided with a mounting hole, and the inner wall of the mounting hole is provided with the clamping part; and

in the cover body structure, the matching part is arranged in the mounting hole in a penetrating manner, so that the clamping part can be clamped in the clamping groove by the communicating groove, and the cover body can cover the mounting hole.

In one embodiment, the mounting body includes a housing and a fitting, the housing forms an accommodating cavity, the mounting hole is opened on the housing and is communicated with the accommodating cavity, and the fitting is disposed in the accommodating cavity and is opposite to the mounting hole.

In one embodiment, a connecting portion is formed in the accommodating cavity, the connecting portion surrounds the mounting hole, and the mounting hole penetrates through the outer wall of the shell.

A ceiling fan, comprising:

a fan main body; and

the mounting body is disposed on the fan body.

In one embodiment, the ceiling fan further comprises a fastener passing through the mounting body from the mounting hole and passing through the fan body, and the cover body is used for covering the fastener in the mounting hole.

The ceiling fan, the accessory mechanism and the cover body structure thereof are characterized in that the matching part of the cover body structure is arranged in the mounting hole of the mounting main body in a penetrating way. Because the joint groove has been seted up on the outer wall of cooperation portion and the intercommunication groove that is linked together with the joint groove, and the part that the joint groove was kept away from in the intercommunication groove runs through the cooperation portion in the surface of lid body dorsad, and then makes joint portion on the mounting hole inner wall wear to locate the joint inslot by the intercommunication groove to make lid body cover the mounting hole, protect the part in the mounting hole or the installation main part. When needs overhaul the installation main part or the part in the mounting hole, only need reverse rotation cooperation portion to make joint portion enter into the intercommunication inslot by joint portion, and withdraw from one side that the cooperation portion was run through from the intercommunication groove, can realize the lid structure for the dismantlement of installation main part, conveniently overhaul the part in the mounting hole, or overhaul the part of installation main part through the mounting hole.

When the joint portion card was located the joint inslot, because joint groove and joint portion interference fit, and then can improve joint portion and establish stability in the joint inslot card. When lid structure is dismantled to needs, only receive the effort by joint groove orientation intercommunication groove direction for the installation main part when lid structure, and when this effort can overcome the frictional force between joint portion and the joint inslot wall, just can make joint portion withdraw from the joint groove. And because the size in intercommunication groove is greater than the size in joint groove for joint portion can further be run through one side of cooperation portion by the intercommunication groove and withdraw from, realizes the dismantlement of lid structure for the installation main part. Through the cooperation in above-mentioned joint groove and intercommunication groove to through the interference fit of joint groove and joint portion, not only can conveniently realize the dismantlement of lid structure for installation main part structure, and can guarantee the stability of lid structure installation in the installation main part, avoid under no external force or less exogenic action, lead to the lid structure to drop by the installation main part.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale. In the drawings:

FIG. 1 is a partial schematic structural view of an accessory mechanism in one embodiment;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic structural view of the housing of FIG. 1;

FIG. 4 is a schematic structural view of the cover structure of FIG. 1;

FIG. 5 is an enlarged view at B in FIG. 4;

fig. 6 is a front view of the cover structure shown in fig. 5.

Description of reference numerals:

10. the auxiliary part mechanism comprises an auxiliary part mechanism 100, an installation main body 110, an installation hole 112, a clamping portion 120, an accommodating cavity 130, a connecting portion 200, a cover body structure 210, a cover body 220, a matching portion 222, a clamping groove 224, a communication groove 230, a first abutting portion 240, a second abutting portion 250 and a handle portion.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In one embodiment, the ceiling fan includes a fan body and an accessory mechanism 10 (shown in FIG. 1), the accessory mechanism 10 being disposed on the fan body to further increase the utility of the ceiling fan.

Referring to fig. 1 to 3, in an embodiment of the present invention, the auxiliary device mechanism 10 includes a mounting main body 100 and a cover structure 200, the mounting main body 100 is provided with a mounting hole 110, and the cover structure 200 is detachably mounted in the mounting hole 110, so as to conveniently realize the maintenance of the components inside the mounting main body 100 through the mounting hole 110.

Specifically, the cover structure 200 includes a cover body 210 and a matching portion 220, the matching portion 220 is disposed on the cover body 210, the matching portion 220 is configured to be installed in the installation hole 110, so that the cover body 210 can cover the installation hole 110, a clamping groove 222 and a communicating groove 224 communicated with the clamping groove 222 are formed on an outer wall of the matching portion 220, and a portion of the communicating groove 224 far away from the clamping groove 222 penetrates through the matching portion 220 and faces away from the surface of the cover body 210. Be provided with joint portion 112 on the inner wall of mounting hole 110, cooperation portion 220 wears to locate in the mounting hole 110, so that joint portion 112 can by the intercommunication groove 224 card is located in the joint groove 222, lid body 210 can cover mounting hole 110. The clamping groove 222 is used for interference fit with the clamping portion 112 on the inner wall of the mounting hole 110, and the size of the communicating groove 224 is larger than that of the clamping groove 222.

In the auxiliary device mechanism 10, the matching portion 220 of the cover structure 200 is inserted into the mounting hole 110 of the mounting main body 100, so that the clamping portion 112 on the inner wall of the mounting hole 110 can be inserted into the clamping groove 222 through the communicating groove 224, and the cover body 210 covers the mounting hole 110, thereby protecting the components in the mounting hole 110 or the mounting main body 100. When parts in the installation main body 100 or the installation hole 110 need to be overhauled, the matching part 220 only needs to be rotated reversely, so that the clamping part 112 enters the communicating groove 224 from the clamping part 112, and exits from one side of the communicating groove 224 penetrating through the matching part 220, the cover body structure 200 can be detached relative to the installation main body 100, the parts in the installation hole 110 can be conveniently overhauled, or the parts of the installation main body 100 can be overhauled through the installation hole 110.

When the clamping portion 112 is clamped in the clamping groove 222, the clamping groove 222 is in interference fit with the clamping portion 112, so that the clamping stability of the clamping portion 112 in the clamping groove 222 can be improved. And then when lid structure 200 is dismantled to needs, only when lid structure 200 receives the effort by joint groove 222 towards the communication groove 224 direction for installation main body 100, and this effort can overcome the frictional force between joint portion 112 and the joint groove 222 inner wall, just can make joint portion 112 withdraw from joint groove 222. And because the size of the communication groove 224 is larger than that of the clamping groove 222, the clamping portion 112 can be further withdrawn from one side of the communication groove 224 penetrating through the matching portion 220, and the cover body structure 200 can be detached from the mounting main body 100. Through the cooperation of above-mentioned joint groove 222 and intercommunication groove 224 to through the interference fit of joint groove 222 and joint portion 112, not only can conveniently realize the dismantlement of lid structure 200 for installation main part 100 structure, and can guarantee the stability of lid structure 200 installation on installation main part 100, avoid under no external force or less exogenic action, lead to lid structure 200 to drop by installation main part 100.

In one embodiment, the mounting body 100 includes a housing formed with a receiving cavity 120, the mounting hole 110 opened on the housing and communicated with the receiving cavity 120, and a fitting disposed in the receiving cavity 120 and opposite to the mounting hole 110. The housing forms a receiving chamber 120 for receiving and mounting the accessories. And because the accessory is to being located mounting hole 110 department, and then can be through dismantling lid structure 200, realize the maintenance to the accessory. Meanwhile, the structural stability of the fitting can be protected by covering the mounting hole 110 with the cover body 210.

In this embodiment, the accessory includes a light emitting component and a controller, the light emitting component is electrically connected to the controller, and the controller is used for controlling the operation of the light emitting component. In this embodiment, the controller is located at the mounting hole 110, the light emitting element is disposed in the accommodating cavity 120 of the housing, and the housing is a transparent or translucent housing, which is convenient for light generated by the light emitting element to be emitted through the housing. And the controller pair is positioned in the mounting hole 110, thereby facilitating the controller to be overhauled through the mounting hole 110.

In other embodiments, the accessory may also be a component capable of other functions, for example, the accessory may also be a music player, a smoke detector, or other components.

In one embodiment, a connecting portion 130 is formed in the accommodating cavity 120, the connecting portion 130 surrounds the mounting hole 110, and the mounting hole 110 penetrates through an outer wall of the housing. By arranging the connecting portion 130 in the accommodating cavity 120, the housing is convenient to form the mounting hole 110, and thus a mounting space is provided for the cover structure 200. In this embodiment, the connecting portion 130 is integrally formed on the housing, so that the stability of the connecting portion 130 on the housing can be improved. In other embodiments, the connecting portion 130 can be disposed on the housing by other connecting methods such as clamping, gluing, and the like.

In one embodiment, as shown in fig. 1, at least two snap-in grooves 222 are formed in the matching portion 220, different snap-in grooves 222 are arranged at intervals, the number of the communicating grooves 224 corresponds to the number of the snap-in grooves 222, and each snap-in groove 222 correspondingly communicates with one communicating groove 224. The number of the catching portions 112 on the inner wall of the mounting hole 110 corresponds to the number of the catching grooves 222. Each clamping portion 112 can be correspondingly clamped in the corresponding clamping groove 222 by a connecting groove 224. Through setting up two at least joint grooves 222 and cooperating with joint portion 112, can improve the stability of cooperation portion 220 installation in mounting hole 110, and then improve the stability of cover structure 200 installation on installation main part 100.

Specifically, the communication groove 224 is located at one side of the catching groove 222. Each communication groove 224 is aligned with the corresponding snap-in groove 222, so that the corresponding snap-in portion 112 can be snapped in the snap-in groove 222 by the corresponding communication groove 224 during the rotation of the fitting portion 220 in the mounting hole 110.

Referring to fig. 2, fig. 4 and fig. 5, in an embodiment, a first abutting portion 230 is disposed on an inner wall of the clamping groove 222 adjacent to the communicating groove 224, and the first abutting portion 230 is used for abutting the clamping portion 112 on the inner wall of the clamping groove 222. By arranging the first abutting portion 230 on the inner wall of the clamping groove 222, the interference fit between the clamping portion 112 and the clamping groove 222 is facilitated. Specifically, the first abutting portion 230 is an elastic protrusion structure.

In this embodiment, the first abutting portion 230 is integrally formed on the inner wall of the clamping groove 222, so that the stability of the first abutting portion 230 disposed on the side wall of the clamping groove 222 can be improved. In other embodiments, the first abutting portion 230 can be disposed on the inner wall of the clamping groove 222 by gluing, screwing, or the like.

In another embodiment, the first abutting portion 230 can be omitted, so that the size of the clamping groove 222 is slightly smaller than the size of the clamping portion 112 according to the size of the clamping portion 112, and then when the clamping portion 112 is inserted into the clamping groove 222, the interference fit between the clamping portion 112 and the clamping groove 222 is realized.

In an embodiment, a second abutting portion 240 is disposed on an outer wall of the fitting portion 220, and the second abutting portion 240 is configured to abut against an inner wall of the mounting hole 110. By providing the second abutting portion 240 on the outer wall of the fitting portion 220, the second abutting portion 240 abuts against the inner wall of the mounting hole 110, the clamping force of the fitting portion 220 in the mounting hole 110 can be increased, and the stability of the fitting portion 220 in the mounting hole 110 can be further improved. In this embodiment, the second abutting portion 240 is disposed on an outer wall close to the clip groove 222 to ensure the stability of the clip portion 112 in the clip groove 222. In other embodiments, the second abutting portion 240 may be disposed at other positions of the mating portion 220.

In another embodiment, the second abutting portion 240 may be disposed on an inner wall of the mounting hole 110, and the second abutting portion 240 may abut against an outer wall of the fitting portion 220, so as to improve the stability of the fitting portion 220 mounted in the mounting hole 110. In other embodiments, the second abutting portion 240 is disposed on both the outer wall of the fitting portion 220 and the inner wall of the mounting hole 110. The stability of the fitting portion 220 in the installation hole 110 is further improved.

In this embodiment, the second abutting portion 240 has a bump structure. The effect of increasing the abutting force between the outer wall of the fitting portion 220 and the inner wall of the mounting hole 110 is realized by the abutting of the bump structure, so that the stability of the fitting portion 220 in the mounting hole 110 is improved. In other embodiments, the second abutting portion 240 may have other types of structures as long as the stability of the installation of the fitting portion 220 in the installation hole 110 can be improved.

Referring to fig. 4, in an embodiment, a handle portion 250 is disposed on a side of the cover body 210 opposite to the matching portion 220. Through set up handle portion 250 on lid body 210, be convenient for through handle portion 250 normal running fit portion 220, and then be convenient for make joint portion 112 enter into the communication groove 224 by joint groove 222 to run through the side by communication groove 224 and withdraw from, or make joint portion 112 rotate to the joint inslot 222 by communication groove 224. The convenience of detaching or attaching the cover structure 200 can be improved by providing the handle portion 250. Specifically, the handle portion 250 is integrally formed on the cover body 210. In other embodiments, the handle portion 250 may be detachably disposed on the cover body 210.

In one embodiment, a rotation mark is disposed on a side of the cover body 210 opposite to the matching portion 220. The installation direction or the disassembly direction of the matching part 220 installed in the installation hole 110 can be further conveniently judged by arranging the rotary mark, and the installation and disassembly efficiency is improved.

Referring to fig. 6, in an embodiment, the communication groove 224 is located at one side of the engaging groove 222, the engaging portion 220 can rotate in the mounting hole 110 from the communication groove 224 to the engaging groove 222, and the communication groove 224 is disposed in an inclined manner with respect to a rotation axis of the engaging portion 220. In the present embodiment, the communication groove 224 is provided obliquely with respect to the rotation axis of the fitting portion 220 from a portion communicating with the click groove 222 to a portion away from the click groove 222. Because the communicating groove 224 sets up for the axis of rotation slope of cooperation portion 220, and then be convenient for cooperation portion 220 when rotating around the axis of rotation to make joint portion 112 can rotate to joint inslot 222 or rotate to communicating groove 224 and withdraw from by joint groove 222 by communicating groove 224, improve the stability that joint groove 222 card was located joint groove 222, or improve the stability that joint portion 112 withdrawed from through communicating groove 224 by joint groove 222.

In other embodiments, the direction of the communication groove 224 from the portion communicating with the clamping groove 222 to the portion away from the clamping groove 222 may also coincide with the direction of the rotation axis of the fitting portion 220, as long as it is possible to realize that the clamping portion 112 rotates from the clamping groove 222 to the communication groove 224 and can be withdrawn from the communication groove 224.

In this embodiment, the fitting portion 220 is a cylindrical structure, and the mounting hole 110 is a circular hole, so as to facilitate the rotation of the fitting portion 220 in the mounting hole 110.

In one embodiment, the ceiling fan further comprises a fastener passing through the mounting body 100 from the mounting hole 110 and passing through the fan body, and the cover body 210 is used for covering the fastener in the mounting hole 110. The stability of installation main part 100 on the fan body can further be improved through setting up the fastener, and owing to seted up mounting hole 110 on installation main part 100, make things convenient for the fastener to pass installation main part 100 and wear to locate fan body through mounting hole 110. In addition, since the cover body 210 of the cover structure 200 can cover the mounting hole 110, the structural neatness of the mounting body 100 can be improved, and the external tube of the accessory mechanism 10 is prevented from being affected by the exposed fastener. Specifically, fasteners pass through the fitting and are disposed through the fan body.

In this embodiment, the fastening member is a connection screw, and the connection screw passes through the mounting main body 100 from the bottom wall of the mounting hole 110 and is inserted into the fan main body, so as to further improve the stability of the arrangement of the mounting main body 100 on the fan main body, and meanwhile, when the accessory mechanism 10 is detached from the fan main body, the connection screw is detached to achieve detachment of the accessory mechanism 10.

In one embodiment, the fan body includes a driving member and a blade, and the driving member is used for driving the blade to rotate.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A cover structure of an accessory mechanism, comprising:

a cover body; and

2. The cover structure of an auxiliary mechanism according to claim 1, wherein a first abutting portion is provided on an inner wall of the clip groove adjacent to the communication groove, and the first abutting portion abuts the clip portion against the inner wall of the clip groove.

3. The cover structure of an accessory mechanism according to claim 1, wherein a second abutting portion is provided on an outer wall of the engagement portion, the second abutting portion being configured to abut against an inner wall of the mounting hole; and/or

4. The cover structure of an auxiliary mechanism according to any one of claims 1 to 3, wherein the communication groove is located on one side of the engaging groove, the engaging portion is rotatable in the mounting hole from the communication groove toward the engaging groove, and the communication groove is provided obliquely with respect to a rotation axis of the engaging portion.

5. A cover structure of an accessory mechanism according to any one of claims 1 to 3, wherein a handle portion is provided on a side of the cover body facing away from the engaging portion.

6. An accessory mechanism, comprising:

the cover structure according to any one of claims 1 to 5, wherein the fitting portion is inserted into the mounting hole, so that the engaging portion can be engaged with the engaging groove, and the cover body can cover the mounting hole.

7. An accessory mechanism as claimed in claim 6, wherein the mounting body comprises a housing defining a receiving cavity, and a fitting provided in the housing and in communication with the receiving cavity, the fitting being positioned in the receiving cavity and opposite the receiving cavity.

8. An accessory mechanism as claimed in claim 7, wherein the receiving cavity is formed with a connecting portion which encloses the mounting aperture and which extends through an outer wall of the housing.

9. A ceiling fan, comprising:

a fan main body; and

the mounting body of any of claims 6-8, disposed on the fan body.

10. The ceiling fan of claim 9 further comprising a fastener extending through the mounting body from the mounting hole and through the fan body, the cover body for covering the fastener in the mounting hole.