CN213040727U - Air conditioner box - Google Patents

Abstract

The application discloses an air conditioner box body, which comprises a frame and a panel, wherein the frame comprises a plurality of frame beam bodies which are columnar and rectangular in section; each panel is including locating the outside planking of frame and with the planking interval preset distance's inner panel, the edge of planking is connected through annular frame with the edge of inner panel, the section of frame is L shape, the adjacent two lateral walls laminating of frame and the frame roof beam body, the inside of inner panel embedding frame, and the inner panel is parallel and level with the inside wall of the frame roof beam body. Use the air conditioner box that this application provided, same frame is shielded between two frames, and the frame can not expose in external environment and box internal environment, and the air conditioner box is inside to level and smooth, and no laying dust dead angle does not have the clean abluent protruding structure of influence, solves the inside unevenness's of current air conditioner box problem, satisfies the easy clear requirement of clean occasion.

Description

Air conditioner box

Technical Field

The application relates to the technical field of air conditioners, in particular to an air conditioner box body.

Background

The box structure of the mainstream combined air conditioning unit in the existing market adopts a frame and panel combination mode. The inventor finds that by adopting the mode, the box body structure generally has a raised frame between the connection of each functional section, and a step surface exists between the frame and the panel, so that the interior of the box body is uneven, inconvenient to clean and incapable of meeting the requirement of a clean standard.

In summary, how to keep the inside of the air conditioning cabinet smooth is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the purpose of this application is to provide an air conditioner box, the inside of air conditioner box is level and smooth, does not have the laying dust dead angle, does not have the protruding structure who influences clean washing, solves the problem of the inside unevenness of current air conditioner box, satisfies the easy clear requirement of clean occasion.

In order to achieve the above purpose, the present application provides the following technical solutions:

an air conditioning cabinet comprising:

the frame is of a cubic structure and comprises a plurality of frame beam bodies which are columnar and rectangular in section;

a plurality of panels, each panel including locate the outside planking of frame and with the planking interval predetermines the inner panel of distance, the edge of planking with the edge of inner panel is connected through annular frame, the section of frame is L shape, the frame with two adjacent lateral wall laminating of frame roof beam body, the inner panel embedding the inside of frame, just the inner panel with the inside wall parallel and level of frame roof beam body.

Optionally, the frame further comprises a frame support, and two ends of the frame support are respectively connected with the frame beam body.

Optionally, a cavity surrounded by the inner plate, the outer plate and the frame is internally provided with a heat insulation material.

Optionally, a sealing strip abutting against the surface of the frame is arranged on the frame.

Optionally, the frame beam body includes a first inner metal section and a first non-metal outer section sleeved and fixed on the periphery of the first inner metal section.

Optionally, the frame further includes connectors located at the top corners of the cubic structure, and the connectors are connected to the ends of the at least two frame beams.

Optionally, the connector includes a first plug fixed inside the first inner profile in an inserting manner and a first end seat fixedly connected with the first plug.

Optionally, be equipped with prefabricated hole on the planking, the panel with the frame is through being located fastening screw in the prefabricated hole is fixed, the lateral wall of planking be equipped with fastening screw encapsulate in the protective cover in the prefabricated hole.

Optionally, the protective cover includes sleeve and block, the sleeve is including locating barrel in the prefabricated hole with locate the barrel tip compresses tightly the turn-ups of planking surface, the block includes the top cap and locates top cap one side and stretch into the embedding ring in the barrel.

Through above-mentioned scheme, the air conditioner box that this application provided's beneficial effect lies in:

the air conditioner box body comprises a frame and a panel; the frame is of a cubic structure and comprises a plurality of square-column-shaped frame beam bodies, and the panel comprises an outer plate, an inner plate and an annular frame with an L-shaped section. After the frame and the panel are assembled, the outer plate is arranged outside the frame, the frame is attached to two adjacent side walls of the frame beam body, the inner plate is embedded into the frame, and the inner plate is flush with the inner side wall of the frame beam body. The same frame is shielded between two adjacent frames, and the planking wraps up the complete lateral wall that forms the air conditioner box of frame, and the inboard of frame is wrapped up completely to the inner panel, and the frame can not expose in external environment and the box internal environment, and the air conditioner box is inside to level and not have the arch, satisfies the easy clear requirement of clean occasion.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a cross-sectional view of an air conditioning cabinet provided in an embodiment of the present application;

fig. 2 is an exploded schematic view of an air conditioning cabinet according to an embodiment of the present application; the remaining panels are not shown;

fig. 3 is a schematic structural diagram of a frame beam according to an embodiment of the present disclosure;

FIG. 4 is a side view of the frame beam shown in FIG. 3;

FIG. 5 is a schematic view of a fastener assembly, a frame beam and a panel in combination according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a combination of two frames according to an embodiment of the present disclosure;

FIG. 7 is an exploded view of a frame support according to an embodiment of the present application;

FIG. 8 is a schematic view of a frame support and a panel of the present application according to an embodiment of the present application;

FIG. 9 is a schematic view of a frame support and frame beam body configuration according to an embodiment of the present disclosure;

FIG. 10 is a schematic cross-sectional view of a support assembly provided in accordance with an embodiment of the present application;

fig. 11 is a schematic cross-sectional view of another support assembly provided in embodiments of the present application.

The reference numbers in the figures are: the frame comprises a frame 1, a frame beam body 11, a first inner section bar 111, a first outer section bar 112 and a first connecting head 12; the panel 2, the outer plate 21, the inner plate 22, the frame 23, the heat insulation material 24 and the sealing strip 25; a fastener kit 3, a fastening screw 31, a sleeve 32, and a cap 33; the connecting buckle plate 4; frame support 5, second inner section 51, second outer section 52, second connector 53, metal cover plate 54, breach 55, recess 56, barb structure 57, self-tapping screw 58, thickening bed course 59.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 11, the air conditioning cabinet provided by the present application may include a frame 1, a panel 2, a fastener kit 3, a connecting clip 4, and a frame support 5.

The frame 1 is of a cubic structure. The number of the frames 1 in the same air conditioner box body is not limited, and can be one or more. The single frame 1 comprises a plurality of frame beams 11, each frame beam 11 being cylindrical and the frame beams 11 being rectangular in cross-section, preferably square in cross-section.

Wherein, in one embodiment, the frame 1 further comprises connectors 12, the connectors 12 are located at the top corners of the cubic structure, and the same connector 12 is connected with the ends of at least two frame beams 11. In the actual connection, the panel 2 is fixedly connected to the frame beam 11 and/or the connecting head 12.

In another embodiment, the frame beam body 11 has an inner-outer double-layer combined structure, the inner layer is a first metal inner section 111, the outer layer is a first nonmetal outer section 112, and the first outer section 112 and the first inner section 111 are fixedly sleeved. In the assembly, the first inner profile 111 is inserted into the cavity of the first outer profile 112. The frame beam body 11 can be cut into required lengths according to actual requirements, and the use of air conditioner box bodies with different sizes is met.

In another embodiment, the connector 12 includes a first plug and a first end seat, which are fixedly connected or integrally formed, and the first plug is inserted and fixed inside the first inner section 111. The header 12 shown in fig. 1 is embodied as a triangular connector, and the header 12 has a first header and three first pins.

The panel 2 is provided in plurality, and each panel 2 comprises an outer plate 21, an inner plate 22, a frame 23, an insulating material 24 and a sealing strip 25. The outer plate 21 is provided outside the frame 1. The inner plate 22 and the outer plate 21 are arranged substantially in parallel with a predetermined distance therebetween. The frame 23 is annular, specifically, rectangular, and the cross section of the frame 23 is L-shaped, so that the edge of the outer plate 21 is connected to the edge of the inner plate 22. The inner plate 22, the outer plate 21 and the frame 23 enclose a cavity, and the heat insulating material 24 is filled in the cavity. The sealing strip 25 is arranged in the mounting groove of the frame 23, the sealing strip 25 can be fixedly bonded with the frame 23, and the sealing strip 25 abuts against the surface of the frame 1 for sealing. The sealing strip 25 and the insulating material 24 can be arranged or omitted according to actual requirements.

During assembly, the frame 23 is attached to two adjacent side walls of the frame beam 11, the inner plate 22 is embedded in the frame 1, and the inner plate 22 is flush with the inner side wall of the frame beam 11. With this structure, the frame beam body 11 is enclosed by two adjacent panels 2, and only the inner panel 22 can be seen from the inside of the air-conditioning case, and the frame beam body 11 cannot be seen directly.

The fastener kit 3 is used to secure the panel 2 to the frame 1. The fastener kit 3 comprises a fastening screw 31 and a protective cover, the panel 2 and the frame 1 are fixed by the fastening screw 31, a prefabricated hole is arranged on the outer plate 21, and the fastening screw 31 is arranged in the prefabricated hole; the protective cover is arranged on the outer side wall of the outer plate 21, and the fastening screw 31 is packaged in the prefabricated hole, so that the fastening screw 31 is completely isolated from the outside air, and the hidden danger that the fastening screw 31 is exposed outside the air-conditioning box body to generate a cold bridge is avoided.

Wherein, in one embodiment, the protecting cover comprises a sleeve 32 and a cap 33, the sleeve 32 comprises a cylinder body arranged in the prefabricated hole and a flange arranged at the end part of the cylinder body and used for pressing the outer surface of the outer plate 21, and the cap 33 comprises a top cover and an embedded ring arranged at one side of the top cover and extending into the cylinder body. When the panel 2 is fixed, the sleeve 32 is firstly embedded into the prefabricated hole of the outer plate 21, the barrel of the sleeve 32 is sunk into the panel 2, the fastening screw 31 is fastened to fix the panel 2 to the frame 1, the outer plate 21 is tightly attached to the frame 23 through the turned-out flanging of the sleeve 32, and the embedded ring and/or the top cover on the cap 33 are tightly matched with the sleeve 32.

The connecting buckle plate 4 is used for realizing the connection between two adjacent frames 1 or two adjacent boxes, please refer to fig. 6, different frames 1 or different boxes are connected, the frames 1 only need to be attached together, and the connecting buckle plate 4 is used for covering two frame beam bodies 11 which are contacted in the two frames 1, so that the connection of the boxes can be ensured to be smooth.

The frame support 5 is intended to be arranged between two adjacent panels 2 to enable adjacent panels 2 to be spliced into a larger panel assembly. Referring to fig. 9, two ends of the frame support 5 are respectively connected to a frame beam 11, two adjacent panels 2 are fixed on the same frame support 5 through the fastener kit 3, at this time, the frame 1 does not expose between the two adjacent panels 2, and the connection between the panels 2 in the box is flat.

Referring to fig. 7, the frame support 5 may include a support assembly, a second connector 53 and a metal cover plate 54.

The supporting component is of a strip-shaped structure as a whole, and the shape of the cross section of the supporting component is generally rectangular. The supporting component adopts a combined structure with an inner layer and an outer layer, the inner layer is a second inner section 51 of metal, the outer layer is a second non-metal outer section 52, and the second outer section 52 is fixedly sleeved with the second inner section 51. During combination, the second inner section bar 51 is inserted into the cavity of the second outer section bar 52, and the second inner section bar 51 and the second outer section bar 52 of the support assembly are easy to process and low in processing cost. The supporting component can be cut into required lengths according to actual requirements, and the use of air conditioner boxes with different sizes is met. And, the second inner section 51 of metal is wrapped by the second outer section 52 of non-metal to form a broken cold bridge structure, which solves the disadvantage of poor heat insulation performance when the whole supporting component is made of metal material.

In one embodiment, referring to fig. 10, the second inner section 51 may be made of standard rectangular cold-formed hollow section steel, and the second outer section 52 may be made of PVC. The structure is particularly suitable for the air conditioner box body with high strength requirement.

In another embodiment, referring to fig. 11, the second inner section 51 may be made of aluminum alloy, and the second outer section 52 is made of PVC, which is particularly suitable for the air conditioning cabinet with low strength requirement.

In another embodiment, referring to fig. 11, since the frame support 5 and the two panels 2 need to be fixed by the fastening screws 31, respectively, a thickened cushion 59 may be disposed at the position where the fastening screws 31 are fixed to increase the thickness, so as to prevent the fastening screws 31 from slipping. Specifically, in actual use, the frame support 5 side faces the inside of the air conditioning case, and this side is referred to as the inside; the other side faces the outside of the air conditioning box body, and the side is called as the outer side; two panels 2 are distributed on the left side and the right side of the frame support 5, the inner side of the panel 2 is flush with the inner side of the frame support 5, and the thickening cushion 59 is specifically arranged on the side wall of the second inner section bar 51 close to the outer part of the air conditioner box body.

The second connector 53 is arranged at the end of the support assembly and is used for being fixedly connected with the frame beam body 11 of the air-conditioning box body. Since the support member has two ends, the same support member is generally provided with a second connector 53 at each end. The second connector 53 is made of a non-metal material, and the specific material can be nylon.

In an embodiment, in the case that the second inner profile 51 is tubular, the second connector 53 specifically includes a second plug and a second end seat, the second end seat is block-shaped, an outer side wall of the second end seat includes a first end surface, a second end surface and a middle side wall, the first end surface and the second end surface are distributed oppositely, and the middle side wall is disposed between the first end surface and the second end surface. During assembly, the second plug is inserted and fixed inside the second inner section 51, the first end face is attached to the end face of the support component, and the second end face is attached to the frame beam body 11. Adopt above-mentioned structure, frame roof beam body 11 itself has certain thickness, and the inboard of frame roof beam body 11, outside are towards inside, the outside of air conditioner box respectively, and the second terminal surface of second connector 53 is fixed between the inboard and the outside of frame roof beam body 11, and second connector 53 and supporting component can not protrusion in the inboard or the outside of frame roof beam body 11 for the air conditioner box is inside all comparatively level and smooth with the outside.

Wherein in one embodiment the outer side wall of the second plug is an interference fit with the inner side wall of the second inner profile 51. In other embodiments, the second plug can also be snapped into the area between the second inner profile 51 and the second outer profile 52.

In another embodiment, a clamping groove is formed in the outer side wall of the second plug, and a barb structure 57 clamped and fixed with the clamping groove is formed in the inner side wall of the second inner section 51, so that when the end portion of the supporting component is combined with the second connector 53, the end portion of the supporting component and the second connector are connected more tightly, and the overall mechanical performance of the supporting component is enhanced.

In another embodiment, the second end seat is provided with a bolt mounting hole. Self-tapping screws 58 are provided in the bolt mounting holes to be fixed to the frame body 11.

Wherein, in another embodiment, the second end seat is provided with a groove 56 for accommodating a tapping screw 58 on a middle side wall between the first end face and the second end face, and the bolt mounting hole is communicated with the groove 56. When the frame support 5 is combined with the panel 2, the panel 2 can be attached to the side wall of the middle part of the second end seat, and at the moment, the self-tapping screw 58 is hidden in the groove 56 between the second connector 53 and the panel 2, so that the problem that the self-tapping screw 58 is exposed in the box body and cannot meet the requirement of easy cleaning of a clean occasion is solved, and meanwhile, the defect that a cold bridge is easily formed when the self-tapping screw 58 is exposed outside the air-conditioning box body is also avoided.

A metal cover plate 54 is arranged on the outer side of the support assembly, and in particular on the surface of the second outer profile 52 facing the inside of the air conditioning cabinet, the metal cover plate 54 being conformed to the second outer profile 52 and remaining fixed, the metal cover plate 54 shielding the second outer profile 52 inside itself, preventing the non-metallic second outer profile 52 from being exposed to the air and ageing. And the metal cover plate 54 enables the strength of the support assembly to be effectively utilized, and the material cost of the support assembly is low.

In one embodiment, in the case that two ends of the supporting component are respectively provided with a second connector 53, the length of the metal cover plate 54 is equal to the distance from the second end face of the first second end seat to the second end face of the second end seat; the width of the second end seat, the width of the second outer profile 52 and the width of the metal cover plate 54 are all preset widths. This ensures that the assembled assembly of the second connecting head 53 and the second outer profile 52, the side walls of which facing the interior of the air-conditioning cabinet are completely covered by the metal cover 54.

In another embodiment, the metal cover plate 54 includes a rectangular plate surface, two opposite sides of the plate surface are respectively provided with a bending edge, each bending edge forms an acute angle with the included angle of the plate surface, the two bending edges clamp the second outer section bar 52, the metal cover plate 54 is fastened with the supporting assembly through an inserting mode, and the metal cover plate is fixed without an additional fastener, is convenient to mount and is not easy to fall off.

In another embodiment, the second outer section bar 52 and the second end seat are respectively provided with a notch 55 at two side corners, the middle part of the bending edge is arranged in the notch 55 of the second outer section bar 52, and the end part of the bending edge is arranged in the notch 55 of the second end seat.

In the present embodiment, the metal cover plate 54 is provided based on the problem that the second outer shape 52 is easily degraded when exposed to air. In other embodiments, for example, where this is not the case, the frame support 5 of the air conditioning cabinet may omit the metal cover 54.

The frame support 5 is mounted as follows: the second inner section 51 is inserted into the second outer section 52, the second connectors 53 are inserted into the two ends of the support assembly, and finally the metal cover plate 54 is inserted into one side of the second connectors 53 with the notches 55, so that the installation of the frame support 5 of the air conditioner box body is completed. When the frame support 5 of the air-conditioning box body is assembled with the frame beam body 11 and the panel 2, the second connectors 53 at the two ends of the frame support 5 of the air-conditioning box body are fixed on the corresponding positions of the frame beam body 11 by using self-tapping screws 58.

In terms of materials, the first outer section 112 may specifically be made of PVC, the inner panel 22 may be made of a metal plate, the outer panel 21 may be made of a metal plate, the frame 23 may specifically be made of PVC or a plastic material of a kind or other non-metal materials, the thermal insulation material 24 may specifically be made of a foam material, and the sealing strip 25 may specifically be made of EPDM, PVC, PU or other sealing materials. The cap 33 can be made of PP or other plastics to ensure the thermal insulation of the fastening screw 31. The sleeve 32 can be made of plastics such as nylon, which not only ensures the heat-insulating property but also ensures the strength. The connecting buckle 4 can be made of metal plate.

In the above embodiment, the fastener kit 3 is used to fix the panel 2 and the frame 1, and if the panel 2 and the frame 1 are fixed by other methods, the fastener kit 3 may be omitted from the air conditioning cabinet. The connection buckle plate 4 is arranged when the same air-conditioning box body needs at least two frames 1 to be spliced for use, if a single air-conditioning box body only comprises one frame 1, or the air-conditioning box body comprises a plurality of frames 1, but the frames 1 are fixed through other modes, and the connection buckle plate 4 can be omitted from the air-conditioning box body. The frame support 5 is arranged when the panel 2 is smaller than the frame 1 and causes the single side of the frame 1 to be equipped with at least two panels 2, at the moment, two adjacent panels 2 are connected through the frame support 5, and the multiple panels 2 are spliced into a whole section on the single side of the frame 1. If a plurality of panels 2 need not be provided on a single side of the frame 1, the frame support 5 may be omitted from the air conditioning cabinet.

The application provides an air conditioner box's mounting means as follows: during production and assembly, the first outer profile 112, the first inner profile 111 and the connector 12 are assembled into the frame 1 in advance, the panel 2 is assembled on the frame 1, and the panel 2 is fastened on the frame 1 by the fastener kit 3, so that the air-conditioning box body is formed.

It can be seen from the above embodiment that the air conditioner box provided by the application has the beneficial effects that:

the frame 1 is wrapped in the panel 2, and no convex structure exists at the corner joint of the box body or the section joint. The frame 1 is hidden in the box structure and does not expose, the air conditioner box is flat and smooth, dust-collecting dead angles are avoided, the protruding structure for cleaning and washing is not influenced, the problem that the inside of the existing air conditioner box is not flat is solved, and the requirement for cleaning in a clean occasion is met. The frame beam body 11 adopts a mode of combining the first inner section bar 111 and the first outer section bar 112, when the section bars are combined, the first inner section bar 111 is inserted into the cavity of the outer section bar, and the frame 1 is simple to process and low in processing cost. The first inner section 111 is wrapped by the first outer section 112 to form a cold bridge cut-off structure, so that the defect of poor heat insulation performance of metal materials is overcome, and the strength of the metal sections is maintained. The assembly production process of the frame 1 and the panel 2 is simple, the operation is convenient, and the labor cost can be reduced. The outer plate 21 and the inner plate 22 of the panel 2 wrap the frame 23 and the frame 1 completely, if the inner plate 22 and the outer plate 21 are metal plates, the frame 1 is not exposed outside the unit because the non-metal first outer section bar 112 is made of metal material no matter what the inside and outside of the box body is, the aging problem of the non-metal section bar is solved, and the defect of short service life of the non-metal material is overcome. The box body has less abutted seams at the corner connection or the section connection, so that the hidden trouble of air leakage of the box body is reduced; the sealing strip 25 on the panel 2 can be integrally formed by adopting foaming sealant, the surface of the rubber strip is smooth, no joint is formed, and the compression rebound rate is high. The box has the advantages of no risk of bacteria breeding and dust accumulation, good sealing performance and low air leakage rate of the box body. The fastening screw 31 fixing the panel 2 is in contact only with the rim 23 and the sleeve 32 of the panel 2, the fastening screw 31 being completely isolated from the outside. The frame 1 is wrapped by the frame 23 of the panel 2, the strength of the frame 1 is effectively utilized, and the material cost of the frame 1 is low.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The air conditioning cabinet provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (9)

1. An air conditioning cabinet, comprising:

the frame (1) is of a cubic structure and comprises a plurality of frame beam bodies (11) which are columnar and rectangular in section;

a plurality of panels (2), each panel (2) including locate frame (1) outside planking (21) and with planking (21) interval default distance's inner panel (22), the edge of planking (21) with the edge of inner panel (22) is connected through annular frame (23), the section of frame (23) is L shape, frame (23) with two adjacent lateral wall laminating of frame roof beam body (11), inner panel (22) embedding the inside of frame (1), just inner panel (22) with the inside wall parallel and level of frame roof beam body (11).

2. An air conditioning cabinet as claimed in claim 1, characterized by further comprising a frame support (5), wherein both ends of the frame support (5) are respectively connected with one frame beam body (11).

3. An air conditioning cabinet as claimed in claim 1, characterized in that the inner panel (22), the outer panel (21) and the rim (23) define a cavity in which a thermal insulation material (24) is disposed.

4. An air conditioning cabinet as claimed in claim 3, characterised in that the jamb (23) is provided with a sealing strip (25) against the surface of the frame (1).

5. The air conditioning cabinet as claimed in claim 1, wherein the frame beam (11) comprises a first inner metal section (111) and a first non-metal outer section (112) fixed to the outer periphery of the first inner section (111).

6. Air-conditioning cabinet according to claim 5, characterized in that said frame (1) further comprises connectors (12) located at the top corners of said cubic structure, said same connectors (12) being connected to the ends of at least two of said frame beams (11).

7. An air conditioning cabinet as claimed in claim 6, characterized in that said connection head (12) comprises a first plug fixed inside said first inner section bar (111) by means of plug-in connection and a first end seat fixedly connected with said first plug.

8. The air conditioning cabinet as claimed in any one of claims 1 to 7, characterized in that the outer panel (21) is provided with a preformed hole, the panel (2) and the frame (1) are fixed by a fastening screw (31) in the preformed hole, and the outer side wall of the outer panel (21) is provided with a protective cover for sealing the fastening screw (31) in the preformed hole.

9. The cabinet as claimed in claim 8, wherein the protecting cover includes a sleeve (32) and a cap (33), the sleeve (32) includes a barrel disposed in the preformed hole and a flange disposed at an end of the barrel and pressing against an outer surface of the outer panel (21), and the cap (33) includes a top cover and an insert ring disposed at one side of the top cover and extending into the barrel.

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