Fastener cover mounting structure and equipment

Abstract

The utility model relates to the technical field of fastener covers, in particular to a fastener cover installation structure and equipment, and aims to solve the problem that an existing screw cover is difficult to disassemble. In order to achieve the purpose, the fastener cover mounting structure comprises a fixing part, a first limiting part, a second limiting part and a fixing part, the fixing part is provided with a counterbore, and the counterbore is internally provided with the first limiting part; the cover body can be detachably placed in the counter bore and can rotate in the counter bore, and a first positioning part is arranged at the bottom of the cover body; when the cover body rotates in the counter bore in the set direction, the first positioning part and the first limiting part can be connected or separated. The fastener cover mounting structure is simple in structure and convenient and fast to disassemble and assemble, and the structure for connecting the cover body and the fixing part cannot be damaged in the disassembly and assembly process. And the cover body covers the counterbore, so that the user can obtain good visual sense experience.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener covers, and specifically provides a fastener cover installation structure and equipment. Background Art

[0002] Connecting two parts by screws is a common connection method. As users have higher and higher requirements for product aesthetics, more and more products are provided with screw covers at the locations where screws are installed to cover the screws, thereby improving the aesthetics of the products.

[0003] At present, most conventional screw covers are fixed to one of the multiple components connected by screws by a claw structure arranged straight up and down at one end of the screw cover. The screw cover fixed by such a clamping method is difficult to remove, and the screw cover is easily damaged during the removal process, so a new screw cover has to be replaced, which increases the cost. Utility Model Content

[0004] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing screw cover is difficult to disassemble.

[0005] In a first aspect, the utility model provides a fastener cover mounting structure, comprising: a fixing component, a countersunk hole is provided on the fixing component, a first limiting portion is provided in the countersunk hole; a cover body, the cover body is placed in the countersunk hole in a detachable manner and can be rotated in the countersunk hole, and a first positioning portion is provided at the bottom of the cover body; when the cover body rotates in the countersunk hole along a set direction, the first positioning portion can be engaged / disengaged with the first limiting portion.

[0006] Further, the cover body includes a cover plate and an extension portion; the extension portion is arranged on the side of the cover plate facing the countersunk hole; the first positioning portion is connected to the extension portion through a connecting portion and extends in a direction away from the extension portion; the first limit is arranged on the inner wall of the countersunk hole and extends toward the inside of the countersunk hole.

[0007] Furthermore, a supporting portion is provided on the inner wall of the countersunk hole; when the cover body is placed in the countersunk hole, the bottom of the extension portion of the cover body is placed on the supporting portion.

[0008] Furthermore, the extension portion also includes a cantilever portion, and a second positioning portion is provided on the bottom surface of the cantilever portion opposite to the support portion; when the bottom of the extension portion of the cover body is placed on the support portion, the bottom of the cantilever portion overlaps with the top of the support portion.

[0009] Furthermore, a second limiting portion is arranged on the top surface of the supporting portion; when the cover body rotates in the countersunk hole along a set direction, the second positioning portion can be engaged with / disengaged from the second limiting portion.

[0010] Further, the first limiting portion is arranged adjacent to one end of the supporting portion; when the cover body rotates in the countersunk hole until the first limiting portion engages with the first positioning portion, the end of the supporting portion adjacent to the first limiting portion limits the first positioning portion.

[0011] Furthermore, a first rib is arranged on the top surface of the cover body; a plurality of second ribs are arranged on the outer surface of the fixing component; when the cover body is placed in the countersunk hole and the first positioning portion is engaged with the first limiting portion, the first rib of the cover body is aligned with the second rib on the outer surface of the fixing component that passes through the open end of the countersunk hole.

[0012] Furthermore, a positioning mark is provided on the inner side wall of the countersunk hole, for indicating the position of the cover body inserted into the countersunk hole.

[0013] Furthermore, reinforcing ribs are provided on the outer side wall of the countersunk hole.

[0014] In a second aspect, the present invention provides a device comprising the fastener cover mounting structure as described above.

[0015] In the case of adopting the above technical solution, the utility model can connect the cover body with the fixing component by engaging the first positioning portion provided on the cover body with the first limiting portion provided in the countersunk hole. The fastener cover installation structure has a simple structure, convenient and quick disassembly and assembly operation, and will not cause damage to the structure connecting the cover body and the fixing component during the disassembly and assembly process. The cover of the countersunk hole by the cover body also allows users to obtain a good visual sensory experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] In the attached figure:

[0018] Figure 1A and Figure 1B is a schematic diagram of the cover body and the fixing component in the embodiment of the present application;

[0019] Figure 2is a schematic diagram of the structure of the fixing component in the embodiment of the present application;

[0020] Figure 3A and Figure 3B is a schematic structural diagram of a cover body in an embodiment of the present application;

[0021] Figure 4A and Figure 4B is Figure 1A The state of the various parts of the cover body and the fixing component in the countersunk hole when the cover body and the fixing component are in the matching state shown;

[0022] Figure 5A and Figure 5B is Figure 1B The state of the various parts of the cover body and the fixing component in the countersunk hole when the cover body and the fixing component are in the matching state shown.

[0023] Reference numerals:

[0024] 1. Fixing component; 11. Countersunk hole; 12. First limiting portion; 13. Support portion; 14. Second limiting portion; 15. Second rib; 16. Through hole; 2. Cover body; 21. First positioning portion; 22. Cover plate; 23. Extension portion; 24. Cantilever portion; 25. Second positioning portion; 26. First rib; 27. Connecting portion. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0026] First, it should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "longitudinal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] like Figure 1A and Figure 1B As shown, an embodiment of the present application provides a fastener cover installation structure, which includes: a fixing component 1 and a cover body 2.

[0029] like Figure 2 As shown, a countersunk hole 11 is provided on the fixing component 1, and a first limiting portion 12 is provided in the countersunk hole 11. A through hole 16 is provided at the bottom of the countersunk hole 11, so that a fastener can pass through the through hole 16 to fix the fixing component 1 with other components. Figure 1A and Figure 1B The cover body 2 can be placed in the countersunk hole 11 in a detachable manner and can rotate in the countersunk hole 11.

[0030] The cover body 2 is inserted into the countersunk hole 11 provided on the fixing component 1 to cover the fastener in the countersunk hole 11 and the countersunk hole 11 itself. Figure 1A The figure shows a state where the cover body 2 is inserted into the countersunk hole 11 on the fixing component 1 but the cover body 2 has not yet been fixed in the countersunk hole 11; Figure 1B The figure shows a state where the cover body 2 is fixed in the countersunk hole 11 .

[0031] like Figure 3A and Figure 3B As shown, a first positioning portion 21 is provided at the bottom of the cover body 2. FIG. 4A to FIG. 5B As shown, when the cover body 2 rotates in a set direction in the countersunk hole 11, the first positioning portion 21 can be engaged / disengaged with the first limiting portion 12. For example, after the cover body 2 is placed in the countersunk hole 11, it is rotated in a counterclockwise direction relative to the axis of the countersunk hole 11, so that the first positioning portion 21 can be engaged with the first limiting portion 12, so that the cover body 2 can be fixed in the countersunk hole 11, that is, the cover body 2 is fixedly connected to the fixing component 1. Then the cover body 2 rotates in a clockwise direction relative to the axis of the countersunk hole 11 (that is, the direction opposite to the rotation direction that enables the first positioning portion 21 to engage with the first limiting portion 12), so that the first positioning portion 21 is separated from the first limiting portion 12, so that the cover body 2 can be taken out of the countersunk hole 11, that is, the cover body 2 is removed from the fixing component 1.

[0032] By engaging the first positioning portion 21 with the first limiting portion 12, the cover body 2 is restricted in the countersunk hole 11 and cannot be separated from the countersunk hole 11. The cover body 2 covers the countersunk hole 11, so that the user cannot see the countersunk hole 11 and the fastener located at the bottom of the countersunk hole 11 from the outside of the fixing component 1. Separating the first positioning portion 21 from the first limiting portion 12 from the engaged state enables the cover body 2 to be removed from the countersunk hole 11 when needed, for example, when the fastener fixed in the countersunk hole 11 is to be removed.

[0033] The fixing component 1 can be a component on a certain device, for example, a component on a household appliance (for example, a back plate on a washing machine, or a grille on an indoor unit of an air conditioner), or a component on an industrial device (for example, a cover of a control cabinet). The fixing component 1 is connected to other components by fasteners. The fasteners can be screws or bolts.

[0034] like Figure 3A and Figure 3B As shown, the cover body 2 includes: a cover plate 22 and an extension portion 23. The extension portion 23 is arranged on a side of the cover plate 22 facing the countersunk hole 11; the first positioning portion 21 is connected to the extension portion 23 through a connecting portion 27 and extends away from the extension portion 23.

[0035] like Figure 2 As shown, the first limiting portion 12 is disposed on the inner wall of the countersunk hole 11, and the first limiting portion 12 protrudes from the inner wall of the countersunk hole 11 and extends toward the inside of the countersunk hole 11. A supporting portion 13 is also disposed on the inner wall of the countersunk hole 11.

[0036] like Figure 1A , Figure 4A and Figure 4B As shown, when the cover body 2 is inserted into the countersunk hole 11, the cover body 2 needs to be adjusted to a specific position (such as Figure 1A The cover 22 is inserted into the countersunk hole 11, so that when the cover 2 is inserted into the countersunk hole 11, the first positioning portion 21 arranged at the bottom of the cover 2 will not interfere with the first limiting portion 12 arranged on the inner wall of the countersunk hole 11 or the supporting portion 13 arranged on the inner wall of the countersunk hole 11. Finally, the bottom of the extension portion 23 of the cover 2 is placed on the supporting portion 13, so that the supporting portion 13 supports the cover 2. At this time, the first positioning portion 21 is adjacent to the first limiting portion 12 arranged in the countersunk hole 11 and is in a separated state. In addition, the upper surface of the cover plate 22 is also flush with the outer surface of the fixing component 1. Therefore, while the cover 2 covers the countersunk hole 11, the outer surface of the fixing component 1 can also be kept flat, so that the user can obtain a good visual sensory experience.

[0037] like Figure 1B , Figure 5A and Figure 5B As shown, the cover body 2 is then rotated to a position where the first positioning portion 21 provided at the bottom of the cover body 2 is engaged with the first limiting portion 12 provided on the inner wall of the countersunk hole 11. At this time, the first limiting portion 12 and the first positioning portion 21 are in a state of being stacked up and down, with the first limiting portion 12 on the top and the first positioning portion 21 on the bottom. Thus, the first limiting portion 12 provided on the inner wall of the countersunk hole 11 restricts the first positioning portion 21 provided on the cover body 2, so that the cover body 2 cannot move in a direction away from the countersunk hole 11 along the axial direction of the countersunk hole 11. Thus, the cover body 2 is restricted in the countersunk hole 11 and cannot escape from the countersunk hole 11.

[0038] When the cover body 2 is to be taken out from the countersunk hole 11, the cover body 2 is rotated in the opposite direction so that the first positioning portion 21 provided on the cover body 2 is moved out from under the first limiting portion 12 provided on the inner wall of the countersunk hole 11, thereby releasing the restriction on the cover body 2 moving along the axial direction of the countersunk hole 11 toward the direction away from the countersunk hole 11.

[0039] In the above process, no matter whether the first positioning portion 21 and the first limiting portion 12 are in a separated state or a joined state, the supporting portion 13 supports the cover body 2 .

[0040] Further, when the first positioning portion 21 is engaged with the first limiting portion 12 , it can be configured that the first positioning portion 21 and the first limiting portion 12 are abutted against each other up and down.

[0041] Furthermore, in order to facilitate the engagement and separation of the first positioning portion 21 and the first limiting portion 12 , a chamfered structure may be provided at the end of the first positioning portion 21 .

[0042] Furthermore, multiple first positioning portions 21 can be provided on the bottom of the cover 2 as required, and multiple first limiting portions 12 can be provided on the inner wall of the countersunk hole 11 accordingly. The number of the first positioning portions 21 and the first limiting portions 12 is not specifically limited in this embodiment of the application.

[0043] Also like Figure 3A and Figure 3B As shown, the extension portion 23 further includes a cantilever portion 24, and a second positioning portion 25 is provided on the bottom surface of the cantilever portion 24 opposite to the support portion 13. Figure 4A and Figure 4B As shown, when the bottom of the extension portion 23 of the cover body 2 is placed on the support portion 13, the bottom of the cantilever portion 24 overlaps with the top of the support portion 13. Figure 2As shown, a second limiting portion 14 corresponding to the second positioning portion 25 is provided on the top surface of the support portion 13. When the cover body 2 rotates in the countersunk hole 11 along a set direction, the second positioning portion 25 can be engaged / disengaged with the second limiting portion 14. Through the engagement of the second positioning portion 25 with the second limiting portion 14, the rotation of the cover body 2 in the countersunk hole 11 is limited, so that the cover body 2 is more firmly fixed in the countersunk hole 11.

[0044] like Figure 1A , Figure 4A and Figure 4B As shown, when the cover 2 is inserted into the countersunk hole 11, and the bottom of the extension portion 23 of the cover 2 is placed on the support portion 13, so that the support portion 13 supports the cover 2, the bottom of the cantilever portion 24 is also placed on the support portion 13 and does not contact the second limit portion 14. At this time, the first positioning portion 21 and the first limit portion 12 are in a separated state. Figure 1B , Figure 5A and Figure 5B As shown, when the cover body 2 is rotated so that the first positioning portion 21 is engaged with the first limiting portion 12, the second positioning portion 25 of the cantilever portion 24 is also engaged with the second limiting portion 14 of the support portion 13. Thus, while the first positioning portion 21 is engaged with the first limiting portion 12 to limit the cover body 2 from being separated from the countersunk hole 11, the second positioning portion 25 is engaged with the second limiting portion 14 to limit the rotation of the cover body 2 relative to the countersunk hole 11 in the countersunk hole 11.

[0045] When the engagement relationship between the second positioning portion 25 and the second limiting portion 14 needs to be released, the second positioning portion 25 and the second limiting portion 14 can be separated from each other by rotating the cover body 2 .

[0046] In a specific embodiment, Figure 3A and Figure 3B As shown, the second positioning portion 25 is a groove, and as shown Figure 2 As shown, the second limiting portion 14 is a convex rib corresponding to the groove shape of the second positioning portion 25. The rotation of the cover body 2 in the countersunk hole 11 relative to the countersunk hole 11 is limited by the cooperation between the groove and the convex rib. The embodiment of the present application does not specifically limit the structure of the second positioning portion 25 and the second limiting portion 14, as long as the cooperation between the second positioning portion 25 and the second limiting portion 14 can limit the rotation of the cover body 2 in the countersunk hole 11 relative to the countersunk hole 11.

[0047] Furthermore, if Figures 2 to 3BAs shown, the extension portion 23 may include a plurality of cantilever portions 24 as required. A plurality of second positioning portions 25 may also be provided on each cantilever portion 24 as required, and the same number of second position limiting portions 14 may be provided on the support portion 13 accordingly. The embodiment of the present application does not specifically limit the number of cantilever portions 24, the number of second positioning portions 25, and the number of second position limiting portions 14.

[0048] Furthermore, if FIG. 4A to FIG. 5B As shown, the first limiting portion 21 is disposed adjacent to one end of the supporting portion 13. When the cover body 2 rotates in the countersunk hole 11 until the first limiting portion 12 is engaged with the first positioning portion 21, the end of the supporting portion 13 adjacent to the first limiting portion 12 limits the first positioning portion, that is, after the first limiting portion 12 is engaged with the first positioning portion 21, even if an erroneous operation occurs so that the first positioning portion 21 continues to rotate to separate from the first limiting portion 12, the end of the supporting portion 13 adjacent to the first limiting portion 12 will block the first positioning portion 21, thereby ensuring that the first limiting portion 12 is firmly engaged with the first positioning portion 21.

[0049] Furthermore, if Figure 3A and Figure 3B As shown, in order to facilitate the insertion of the cover body 2 into the countersunk hole 11 and the rotation of the cover body 2 in the countersunk hole 11, a first rib 26 can be provided on the top surface of the cover body 2. The operator operates the cover body 2 by grasping the first rib 26. Figure 2 As shown, a plurality of second ribs 15 are provided on the outer surface of the fixing member 1 to strengthen the fixing member 1. When the cover 2 is inserted into the countersunk hole 11 and the first positioning portion 21 is engaged with the first limiting portion 12, as shown in FIG. Figure 1B As shown, the first rib 26 of the cover body 2 is aligned with the second rib 15 on the outer surface of the fixing component 1 that passes through the open end of the countersunk hole 11 .

[0050] In a specific embodiment, Figures 1A to 5B As shown, a plurality of second ribs 15 arranged on the outer surface of the fixing component 1 are arranged in parallel. When the cover body 2 is inserted into the countersunk hole 11, the first rib 26 of the cover body 2 forms a certain angle with the second rib 15 on the outer surface of the fixing component 1 that passes through the open end of the countersunk hole 11. When the cover body 2 is rotated so that the first positioning portion 21 is engaged with the first limiting portion 12, the first rib 26 of the cover body 2 forms a straight line with the second rib 15 on the outer surface of the fixing component 1 that passes through the open end of the countersunk hole 11, so that the user can obtain a good visual sensory experience. The arrangement of the plurality of second ribs 15 arranged on the outer surface of the fixing component 1 can be determined as needed, and the embodiments of the present application do not specifically limit this.

[0051] Furthermore, when the operator inserts the cover body 2 into the countersunk hole 11, if the cover body 2 is not inserted into the countersunk hole 11 in a suitable position, the first positioning portion 21 arranged at the bottom of the cover body 2 interferes with the first limiting portion 12 arranged in the countersunk hole 11 or with the supporting portion 13 arranged on the inner wall of the countersunk hole 11, resulting in that the bottom of the extension portion 23 of the cover body 2 is not placed on the supporting portion 13, thereby causing the cover body 2 to not be fully inserted into the countersunk hole 11, and the upper surface of the cover plate 22 is not flush with the outer surface of the fixing component 1, but is higher than the outer surface of the fixing component 1.

[0052] In order to avoid the above situation and enable the operator to quickly and accurately determine the insertion position of the cover body 2, a positioning mark (not shown in the figure) is provided on the inner side wall of the countersunk hole 11 to indicate the position where the cover body 2 is inserted into the countersunk hole 11. For example, the positioning mark can be a line or a graphic mark marked on the inner side wall of the countersunk hole 11. When the cover body 2 is inserted into the countersunk hole 11, the insertion position of the cover body 2 can be determined by aligning the first rib 26 provided on the cover plate 22 of the cover body 2 with the positioning mark; or the first positioning portion 21 provided at the bottom of the cover body 2 is aligned with the positioning mark to determine the insertion position of the cover body 2. The embodiment of the present application does not specifically limit the form of the positioning mark and the alignment method of the cover body 2 and the positioning mark.

[0053] Furthermore, in order to improve the strength of the countersunk hole 11, a reinforcing rib (not shown in the figure) is provided on the outer wall of the countersunk hole 11, and the reinforcing rib can connect the outer wall of the countersunk hole 11 with the inner wall of the fixing component 1, thereby improving the strength of the countersunk hole 11.

[0054] The fixing component 1 and the cover body 2 in the embodiment of the present application are preferably made of plastic material, so as to utilize the elasticity of the plastic material to avoid damage to the cover body 2 and the fixing component 1 during assembly and disassembly of the cover body 2 and the fixing component 1.

[0055] The embodiment of the present application also provides a setting, and the device includes the fastener cover mounting structure as described above. As long as there is a situation in the device where two components need to be connected together by fasteners, the above-mentioned fastener cover mounting structure can be applied. The device can be a household appliance, such as a washing machine, an air conditioner, a television, a refrigerator, etc. On household appliances, fasteners (such as screws, bolts, etc.) are often used to connect two components together, for example, the back panel of an air conditioner is connected to the outer shell of the air conditioner with screws. The device can also be industrial equipment, such as electrical equipment, computer equipment, numerical control and automation equipment, mechanical equipment, etc. There are also application scenarios on these devices where two components need to be connected together by fasteners. In these application scenarios mentioned above, the fastener cover mounting structure in the embodiment of the present application as described above can be used.

[0056] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A fastener cover mounting structure, characterized in that: include: A fixing component, wherein a countersunk hole is formed on the fixing component, and a first limiting portion is disposed in the countersunk hole; A cover body, the cover body is placed in the countersunk hole in a detachable manner and can rotate in the countersunk hole, and a first positioning portion is provided at the bottom of the cover body; When the cover body rotates in the countersunk hole along a set direction, the first positioning portion can be engaged with / disengaged from the first limiting portion.

2. The mounting structure according to claim 1, characterized in that: The cover body comprises a cover plate and an extension portion; The extension portion is arranged on a side of the cover plate facing the countersunk hole; The first positioning portion is connected to the extending portion through a connecting portion, and extends in a direction away from the extending portion; The first limiter is arranged on the inner wall of the countersunk hole and extends toward the inside of the countersunk hole.

3. The mounting structure according to claim 2, characterized in that: A support portion is provided on the inner wall of the countersunk hole; When the cover is placed in the countersunk hole, the bottom of the extension portion of the cover is placed on the support portion.

4. The mounting structure according to claim 3, characterized in that: The extension portion further comprises a cantilever portion, and a second positioning portion is provided on the bottom surface of the cantilever portion opposite to the support portion; When the bottom of the extension portion of the cover body is placed on the support portion, the bottom of the cantilever portion overlaps with the top of the support portion.

5. The mounting structure according to claim 4, characterized in that: A second limiting portion is provided on the top surface of the support portion; When the cover body rotates in the countersunk hole along a set direction, the second positioning portion can be engaged with / disengaged from the second limiting portion.

6. The mounting structure according to claim 3, characterized in that: The first limiting portion is disposed adjacent to one end of the supporting portion; When the cover body rotates in the countersunk hole until the first limiting portion engages with the first positioning portion, the end of the support portion adjacent to the first limiting portion limits the first positioning portion.

7. The mounting structure according to any one of claims 1 to 6, characterized in that: A first rib is arranged on the top surface of the cover body; A plurality of second ribs are arranged on the outer surface of the fixing component; When the cover is placed in the countersunk hole and the first positioning portion is engaged with the first limiting portion, the first rib of the cover is aligned with the second rib on the outer surface of the fixing component that passes through the open end of the countersunk hole.

8. The mounting structure according to any one of claims 1 to 6, characterized in that: A positioning mark is arranged on the inner side wall of the countersunk hole, for indicating the position where the cover body is inserted into the countersunk hole.

9. The mounting structure according to any one of claims 1 to 6, characterized in that: A reinforcing rib is arranged on the outer side wall of the countersunk hole.

10. A device, characterized in that: The invention comprises the fastener cover mounting structure according to any one of claims 1 to 9.

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