JP2009203636A - Surface panel mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface panel mounting structure which enables the easy and rapid mounting/demounting of a surface panel. <P>SOLUTION: A mounting base 5 which has a tubular portion getting into a mounting opening 2 formed in a substrate surface 1, is fixed, and an engaging portion 5b is provided in the tubular portion of the mounting base 5. An insertion adapter 6 which has an insertion portion capable of being inserted into the mounting base 5, is fixed on the backside of the surface panel 3. A portion 7 to be engaged is provided in the outer surface of the insertion portion of the insertion adapter 6, and at least either of the engaging portion 5b and the portion 7 to be engaged has elasticity. The insertion adapter 6 of the surface panel 3 is inserted into the mounting base 5 of the substrate surface 1, so that the portion 7 to be engaged can be engaged with the engaging portion 5b by an elastic force, and the surface panel 3 is mounted on the mounting base 5 of the substrate surface 1 by the elastic force. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surface panel mounting structure.

  Conventionally, for example, when a designed surface panel is attached to a ceiling or an undersurface of a wall, there is a method of attaching with an adhesive, an inconspicuous thin nail, a tucker or the like.

  Moreover, when attaching a surface panel to a base surface with a screw, there is a method of making a screw hole in the surface panel and fixing it with screws, and then closing the screw hole with a blindfold member.

  Although it is an embedded lighting fixture different from the front panel, there is also a method of attaching the frame body by inserting the frame body into the fixture body fixed to the ceiling and locking the rising piece of the frame body to the locking member of the fixture body. Yes (see Patent Document 1).

In particular, when functions such as speakers and lighting are added to the front panel, it is desired that the front panel can be easily attached to and removed from the base surface for maintenance and the like.
JP-A-10-208520

  However, it is very difficult to quickly remove it from the base surface without damaging the surface panel by a method such as adhesion.

  Also, with the screwing method, the blindfold on the surface of the front panel is conspicuous, so it is easy to impair the design, and the screwing work is troublesome and the front panel can not be easily attached and removed. is there.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a surface panel mounting structure that allows a surface panel to be mounted and removed easily and quickly.

  In order to solve the above-mentioned problems, the present invention is a surface panel mounting structure for removably mounting at least one of a plurality of rectangular surface panels mounted side by side on a ceiling or an undersurface of a wall. An attachment opening is formed in the base surface, and an attachment base having a cylindrical portion that enters the attachment opening is fixed, and an engagement portion is provided in the tubular portion of the attachment base. An insertion adapter having an insertion portion that can be inserted into the mounting base is fixed to the back surface of the panel, and an engaged portion is provided on an outer surface of the insertion portion of the insertion adapter, and is engaged with the engagement portion. At least one of the parts has elasticity, and by inserting the plug adapter of the front panel into the mounting base of the base surface, the engaged portion is engaged with the engaging portion by elastic force, and the base mounting base of the base surface Surface panel There is provided a surface panel mounting structure, characterized in that the to be mounted in sexual power.

  As in claim 2, a spring hook portion protruding inward is provided on the inner peripheral surface of the cylindrical portion of the mounting base, and outwardly on the outer peripheral surface of the insertion portion of the plug adapter of the surface panel. When the protruding spring part is provided and the plug adapter of the front panel is inserted into the mounting base of the base surface, the spring part of the plug adapter engages with the spring hook part of the mounting base by a spring force. It is preferable that the surface panel is attached to the attachment base of the lower ground.

  A plurality of spring portions of the mounting base and spring portions of the insertion adapter are provided at equal angular intervals on the circumference, and the insertion adapter is disposed in a gap adjacent to the spring hanging portion of the mounting base. After inserting the adapter for the front panel into the mounting base on the base surface while aligning the spring part of the front panel, turn the front panel to engage the spring part of the plug adapter with the spring hook of the mounting base with spring force. It is preferable to combine them.

  According to a fourth aspect of the present invention, the spring portion of the plug-in adapter is configured by a leaf spring, bent in a substantially square shape in a side view, and the inclined portion on the surface panel side is applied to the spring hook portion of the mounting base as a spring force. It is preferable to engage with each other.

  As in claim 5, an engagement protrusion that is bent in a substantially L shape in a side view is provided on the inner surface of the upper bottom portion of the mounting base, and the upper bottom portion of the insertion adapter is substantially in a plan view. Engaged slotted hole curved in the shape of a curved ball is provided, the insertion adapter of the front panel is inserted into the mounting base of the base surface, and the wide hole part of the engaged slotted hole is engaged It is preferable that the peripheral edge portion of the narrow hole portion of the engaged long hole portion can be engaged with the engaging projection portion by turning the front panel after being inserted into the engaging portion.

  As in claim 6, engagement protrusions protruding inwardly are provided on the inner peripheral surface of the upper edge portion of the mounting base at equal angular intervals on the circumference, and the outer periphery of the upper edge portion of the insertion adapter. Engagement protrusions projecting outward on the surface are provided at equal angular intervals on the circumference, and the front panel is fitted with the engagement protrusions of the insertion adapter in the gaps of the engagement protrusions of the mounting base It is preferable that the engagement protrusion can be engaged with the engagement protrusion by turning the front panel after the insertion adapter is inserted into the mounting base of the base surface.

  According to the present invention, a plug adapter of at least one surface panel among a plurality of surface panels mounted side by side on the lower ground of the ceiling or wall is inserted into the mounting base of the lower ground of the ceiling or wall. As a result, the engaged portion of the plug adapter of the front panel is engaged with the engaging portion of the mounting base of the ceiling or the lower ground of the wall by elastic force, and the front panel is attached to the mounting base of the base surface by elastic force. Be able to.

  Therefore, the front panel can be easily and quickly attached to the base surface. Conversely, the front panel can be easily and quickly attached by pulling out the engaged portion on the back surface of the front panel from the base mounting base. It can be removed from the mounting base.

  Further, if the surface panel is positioned by being pushed in until it does not move in the direction of the mounting base on the base surface, the surface panel can be mounted so as to be substantially flush with the adjacent surface panel. Furthermore, since the plug adapter is provided on the front panel and the mounting base is provided on the base surface, the structure is simplified.

  According to claim 2, when the plug adapter of the front panel is inserted into the mounting base of the base surface, the spring portion of the plug adapter engages with the spring hook portion of the mounting base by a spring force, The surface panel can be attached to the attachment base.

  According to the third aspect, the plug adapter of the front panel is inserted into the mounting base of the base surface while the spring portion of the plug adapter is matched with the gap of the spring hook portion of the mounting base. Thereafter, by rotating the front panel, the spring portion of the insertion adapter is engaged with the spring hook portion of the mounting base by a spring force, so that the insertion can be smoothly performed with a light force.

  According to claim 4, the leaf spring of the plug adapter is bent in a substantially square shape in a side view, and the inclined portion on the surface panel side is engaged with the spring hook portion of the mounting base by a spring force. A spring force is applied in the direction in which the panel is pulled toward the mounting base. Therefore, the surface panel is accurately positioned at the insertion position by being pressed against the flange portion or the like of the mounting base against the spring force. Accordingly, the front panel can be more accurately attached so as to be substantially flush with the adjacent front panel.

  According to the fifth aspect, the wide hole portion of the engaged long hole portion is inserted into the engaging projection portion while the insertion adapter of the front panel is inserted into the mounting base of the base surface. After that, by rotating the front panel, the peripheral edge of the narrow hole portion of the engaged elongated hole can be engaged with the engaging protrusion, so that there is no possibility that the front panel falls off from the mounting base on the base surface. .

  According to the sixth aspect, the engaged protrusion is inserted into the gap of the engaging protrusion while the plug adapter of the front panel is inserted into the mounting base of the base surface. Thereafter, by rotating the front panel, the engaged protrusion can be engaged with the engaging protrusion, so that there is no possibility that the front panel falls off the mounting base on the base surface.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 2, a plurality of rectangular surface panels 3 are arranged on the lower surface of a ceiling base material (base surface) 1 in a building, with a slight gap t between them, and arranged vertically and horizontally on the same plane. It is attached [see FIG. 3 (e)]. The surface panel 3 of this example is formed in a regular square shape of about 30 to 45 cm square, for example, and the surface (lower surface) is decorated with a color or a pattern, and is made of a wood material, a resin material, a ceramic material, Manufactured with these composite materials.

  All of the plurality of rectangular surface panels 3 do not have to be removably attached, and at least one of them may be attached removably. Hereinafter, only the front panel 3 that is detachably attached will be described.

  An attachment opening 2 is formed at the center of the ceiling base material 1 to which the front panel 3 is attached. A mounting base 5 having a cylindrical portion 5g protruding inside the ceiling base material 1 when inserted into the mounting opening 2 from below is provided, and the lower flange portion 5a of the mounting base 5 is connected to the lower surface of the ceiling base material 1 It will be positioned by hitting. The mounting base 5 is fixed to the ceiling base material 1 by fixing the lower flange portion 5a to the ceiling base material 1 with a screw or the like.

  On the inner peripheral surface of the mounting base 5 are provided a plurality of (four in this example, 90 ° intervals) arc-shaped spring hooks (engaging portions) 5b protruding inward at equal angular intervals on the circumference. It has been. Both end portions of the spring hook portion 5b are inclined so that a plate spring 7 described later can easily ride. The spring hook portion 5b can be formed integrally by cutting and raising a part of the inner peripheral surface of the mounting base 5 inward, or can be provided by welding another part.

  A lower flange portion 6a of a cylindrical insertion adapter 6 that can be inserted into the mounting base 5 of the ceiling base material 1 from below is fixed to the center portion of the rear surface of the front panel 3 with a screw or the like. A plurality (four at 90 degree intervals in this example) which are located on the outer peripheral surface of the insertion portion of the insertion adapter 6 and protrude outward from the outer peripheral surface of the insertion adapter 6 at equal circumferential intervals. Leaf spring (engaged portion) 7 is provided. Each leaf spring 7 is bent outward in a substantially square shape in a side view, and the lower end base portion 7a is fixed to the back surface of the front panel 3 with screws or the like. Instead of the leaf spring 7, a click-like spring portion in which a ball and a coil spring are combined may be used.

  The positional relationship between the spring hook portion 5b of the mounting base 5 and the leaf spring 7 of the plug-in adapter 6 is as follows. 2 (c) and FIG. 3 (e) with respect to the normal mounting state of the front panel 3, in the mounting preparation state in which the front panel 3 of FIG. 2 (a) and FIG. 3 (a) is rotated at about 45 degrees. The leaf spring 7 of the plug-in adapter 6 is adapted to match the adjacent gap s [see FIG. 1 (b)] of the spring hook portion 5b of the mounting base 5.

  Then, after the insertion adapter 6 of the surface panel 3 is inserted into the mounting base 5 of the ceiling base material 1 from below (see FIGS. 2 (a) and 2 (b)), the surface panel 3 is attached to the arrow a in FIG. 3 (c). Turn in the direction of about 45 degrees. As a result, the front panel 3 is in the normal mounting state shown in FIG. 3E, and at this time, the leaf spring 7 of the insertion adapter 6 rides on the spring hooking portion 5b of the mounting base 5 as shown in FIG. The engagement is made by spring force (elastic force).

  At this time, in the leaf spring 7, the inclined portion 7 b on the surface panel 3 side is engaged with the spring hook portion 5 b of the mounting base 5 by a spring force.

  On the other hand, on the inner surface of the upper bottom portion 5c of the mounting base 5, an engagement metal fitting 9 having a pair of engagement protrusions 9a bent inwardly in an L shape in a side view is fixed by welding or the like. Is provided. Further, as shown in FIG. 3, a pair of engaged long hole portions 6d curved in a curved shape in plan view are integrally provided by punching on the upper bottom portion 6c of the insertion adapter 6. .

  In relation to the positional relationship between the spring hook portion 5b of the mounting base 5 and the leaf spring 7 of the insertion adapter 6, the engagement protrusion 9a on the mounting base 5 side and the engaged elongated hole portion of the insertion adapter 6 are connected. The positional relationship with 6d is as follows. Compared to the normal mounting state of the front panel 3 in FIG. 3E, in the mounting preparation state in which the front panel 3 in FIG. The wide hole portion 6e of the engaged long hole portion 6d of the insertion adapter 6 is matched.

  Then, when the insertion adapter 6 of the front panel 3 is inserted into the mounting base 5 of the ceiling base material 1 from below, the wide hole portion 6e of the engaged long hole portion 6d is inserted into the engaging projection portion 9a. [Refer to Drawing 2 (a) (b) and Drawing 3 (b) (d)).

  After that, the front panel 3 is rotated at about 45 degrees in the direction of arrow a in FIG. As a result, the front panel 3 is brought into the normal mounting state shown in FIG. 3E, and at this time, as shown in FIG. 3F, the engaging projection 9a enters the narrow hole portion 6f of the engaged long hole portion 6d. Thus, the peripheral edge portion of the narrow hole portion 6f of the engaged elongated hole portion 6d can be engaged with the engaging protrusion portion 9a.

  In the configuration as described above, when the front panel 3 is attached, the front panel 3 is turned to the attachment preparation state of about 45 degrees in FIG. 3A with respect to the normal attachment state in FIG. Thereby, the leaf | plate spring 7 of the insertion adapter 6 of the surface panel 3 will correspond to the clearance gap s which the spring hook part 5b of the attachment base 5 of the ceiling base material 1 adjoins. Further, the wide hole portion 6e of the engaged long hole portion 6d of the insertion adapter 6 is matched with the engaging protrusion portion 9a on the mounting base 5 side.

  In this state, when the insertion adapter 6 of the front panel 3 is inserted into the mounting base 5 of the ceiling base material 1 from below, the leaf spring 7 of the insertion adapter 6 is adjacent to the gap s adjacent to the spring hook portion 5b of the mounting base 5. Enters without resistance. At the same time, the wide hole portion 6e of the engaged long hole portion 6d of the plug-in adapter 6 is inserted into the engaging protrusion 9a on the mounting base 5 side.

  Thereafter, when the front panel 3 is rotated by about 45 degrees in the direction of arrow a in FIG. 3C, the leaf spring 7 of the plug-in adapter 6 rides on the spring hooking portion 5b of the mounting base 5, and the spring force (elasticity) Force). In the leaf spring 7, the inclined portion 7 b on the surface panel 3 side is engaged with the spring hook portion 5 b of the mounting base 5 by a spring force. At the same time, the engaging protrusion 9a on the side of the mounting base 5 enters the narrow hole portion 6f of the engaged long hole portion 6d of the insertion adapter 6, so that the engaged long hole portion 6d is narrowed in the engaging protrusion 9a. The peripheral edge portion of the hole portion 6f can be engaged. Finally, the front panel 3 is pushed in until it does not move in the direction of the ceiling base material 1.

  In this manner, by inserting the insertion adapter 6 of the front panel 3 into the mounting base 5 of the ceiling base material 1, the leaf spring 7 comes into engagement with the spring hooking portion 5b by the spring force. The front panel 3 is attached by spring force.

  Therefore, the front panel 3 can be attached to the ceiling base material 1 easily and quickly. Conversely, the front panel 3 can be easily and quickly removed from the ceiling base material 1 by pulling out the plug adapter 6 of the front panel 3 from the mounting base 5 of the ceiling base material 1 in the reverse procedure.

  Further, if the surface panel 3 is positioned by being pushed in until it does not move in the direction of the ceiling base material 1, the surface panel 3 can be attached so as to be substantially flush with the adjacent surface panel 3.

  In particular, the plate spring 7 of the plug-in adapter 6 is bent in a square shape when viewed from the side, and the inclined portion 7b on the surface panel 3 side is engaged with the spring hook portion 5b of the mounting base 5 by a spring force. A spring force is applied in the direction in which the panel 3 is pulled toward the mounting base 5. Therefore, since the surface panel 3 is positioned against the lower flange portion 5a of the mounting base 5 against the spring force, the surface panel 3 is accurately positioned at the insertion position, so that it is substantially flush with the adjacent surface panel 3. Thus, the front panel 3 can be attached more accurately.

  Furthermore, since the plug adapter 6 is provided on the front panel 3 and the mounting base 5 is provided on the ceiling base material 1, the structure is simplified.

  Further, the insertion adapter 6 of the front panel 3 is inserted into the attachment base 5 of the ceiling base material 1 while the leaf spring 7 of the insertion adapter 6 is matched with the gap s of the spring hook portion 5 b of the attachment base 5. Thereafter, by rotating the front panel 3, the leaf spring 7 of the insertion adapter 6 is engaged with the spring hooking portion 5b of the mounting base 5 by a spring force, so that the insertion can be smoothly performed with a light force.

  Further, the insertion adapter 6 of the front panel 3 is inserted into the attachment base 5 of the ceiling base material 1, and the wide hole portion 6 e of the engaged long hole portion 6 d of the insertion adapter 6 is engaged with the engagement protrusion on the attachment base 5 side. Insert into part 9a. Thereafter, by turning the front panel 3, the engaging protrusion 9 a on the mounting base 5 side enters the narrow hole portion 6 f of the engaged long hole portion 6 d of the insertion adapter 6. As a result, the peripheral portion of the narrow hole portion 6f of the engaged elongated hole portion 6d can be engaged with the engaging protrusion portion 9a, so that there is no possibility that the surface panel 3 falls off the ceiling base material 1.

  In the embodiment shown in FIGS. 1 to 3, the mounting base 5 is provided with an engagement fitting 9 having an engagement protrusion 9 a, and the insertion adapter 6 is provided with an engaged long hole portion 6 d by punching. However, it can also be configured as in the modification shown in FIGS.

  That is, on the inner peripheral surface of the upper edge portion of the mounting base 5, arc-shaped engagement protrusions 5d projecting inward are provided at equal circumferential intervals (two in this example at 180 degrees). . In addition, on the outer peripheral surface of the upper edge portion of the plug-in adapter 6, engaged protrusions 6 g that protrude outward are provided at equal circumferential intervals (two at 180 degrees in this example).

  In relation to the positional relationship between the spring hook portion 5b of the mounting base 5 and the leaf spring 7 of the insertion adapter 6, the engaging projection 5d of the mounting base 5 and the engaged projection 6g of the insertion adapter 6 are as follows. The positional relationship is as follows. 4 (d), 5 (e) and 5 (f), the front panel 3 of FIGS. 4 (b), 5 (a) and 5 (b) is rotated at about 45 degrees. In the prepared mounting state, the engaged protrusion 6g of the insertion adapter 6 matches the gap u of the engaging protrusion 5d of the attachment base 5.

  Then, when the insertion adapter 6 of the front panel 3 is inserted into the mounting base 5 of the ceiling base material 1 from below, the engaged protrusion 6g is inserted into the gap u of the engaging protrusion 5d [FIG. (See (b) (c) and FIGS. 5 (a) and (c)).

  Thereafter, the front panel 3 is rotated at about 45 degrees in the direction of arrow a in FIG. As a result, the front panel 3 is in the normal attachment state shown in FIGS. 4D and 5E and 5F, and at this time, the engaged protrusion 6g can be engaged with the engaging protrusion 5d.

  Even if it is this structure, there is no possibility that the surface panel 3 may fall out of the ceiling base material 1.

  In the said embodiment, although the surface panel 3 was attached to the ceiling base material 1, the surface panel 3 can also be attached to a wall surface.

  In the said embodiment, although the surface panel 3 was the surface (lower surface) made up with a coloring, a pattern, etc., it can be set as the surface panel 3 incorporating a speaker or a lighting fixture, for example. When a speaker is incorporated, a vibrator can be fitted into the internal space of the plug-in adapter 6. When a lighting fixture is incorporated, a ballast can be fitted into the internal space of the plug-in adapter 6. In either case, the front panel 3 can be easily and quickly removed, so that maintenance can be easily performed.

It is the surface panel mounting structure of embodiment of this invention, (a) is a disassembled perspective view, (b) is the lower surface side perspective view of a mounting base. (A) is a cross-sectional view of the surface panel and ceiling base material in a state of mounting preparation, (b) is a cross-sectional view of the surface panel and ceiling base material when the insertion adapter is inserted into the mounting base, and (c) is a normal mounting state. It is sectional drawing of the surface panel and ceiling base material. (A) is a front view of the front panel in a state of preparation for installation, (b) is a plan sectional view showing the relationship between the engaging projection and the engaged elongated hole in (a), and (c) is different from the mounting base. The front view of the surface panel when the insertion adapter is inserted, (d) is a plan sectional view showing the relationship between the engaging projection and the engaged elongated hole of (c), and (e) is the surface in the regular attachment state The front view of a panel is (f). It is a plane sectional view showing the relation between the engaging projection part of (e), and the engaged long hole part. It is the surface panel attachment structure of the modification of this invention, (a) is a disassembled perspective view, (b) is sectional drawing of the surface panel and ceiling base material of an attachment preparation state, (c) is a plug adapter in an attachment base. Sectional drawing of the surface panel and ceiling base material when it is inserted, (d) is a cross-sectional view of the surface panel and ceiling base material in a regular attachment state. (A) is a perspective view of a surface panel and a ceiling base material in a state of mounting preparation, (b) is a front view of the surface panel of (a), and (c) is a surface panel when an insertion adapter is inserted into the mounting base. (D) is a front view of the front panel of (c), (e) is a perspective view of the front panel and the ceiling base material in a normally mounted state, and (f) is a front view of the front panel of (e). It is a front view.

Explanation of symbols

1 Ceiling base material (base surface)
2 Mounting opening 3 Front panel 5 Mounting base 5b Spring hook (engaging portion)
5c Upper bottom part 5d Engaging projection part 5g Tubular part 6 Plug adapter 6c Upper bottom part 6d Engaged long hole part 6e Wide hole part 6f Narrow hole part 6g Engagement projection part 7 Leaf spring (engaged part)
7b Inclined portion 9 Engagement fitting 9a Engagement protrusions s, t, u

Claims (6)

A surface panel mounting structure for detachably mounting at least one of a plurality of rectangular surface panels mounted side by side on a ceiling or an undersurface of a wall,
A mounting opening is formed in the base surface, a mounting base having a cylindrical portion that enters the mounting opening is fixed, and an engaging portion is provided in the cylindrical portion of the mounting base. An insertion adapter having an insertion portion that can be inserted into the mounting base is fixed on the back surface, and an engaged portion is provided on an outer surface of the insertion portion of the insertion adapter. At least one has elasticity, and by inserting the plug adapter of the front panel into the mounting base of the base surface, the engaged portion is engaged with the engaging portion by the elastic force, and the surface is attached to the mounting base of the base surface. A surface panel mounting structure, wherein the panel is mounted by an elastic force.   An inwardly projecting spring hook portion is provided on the inner peripheral surface of the cylindrical portion of the mounting base, and an outwardly projecting spring portion is provided on the outer peripheral surface of the insertion portion of the plug adapter of the front panel. When the front panel plug adapter is inserted into the mounting base on the base surface, the spring part of the plug adapter engages with the spring hook of the mounting base with a spring force. 2. The surface panel mounting structure according to claim 1, wherein the panel is mounted.   A plurality of spring portions of the mounting base and spring portions of the insertion adapter are provided at equiangular intervals on the circumference, and the spring portion of the insertion adapter is matched with a gap adjacent to the spring hanging portion of the mounting base. After inserting the plug adapter of the front panel into the mounting base on the base surface, turning the front panel allows the spring part of the plug adapter to engage with the spring hook of the mounting base with spring force. The surface panel mounting structure according to claim 2, wherein:   The spring portion of the insertion adapter is configured by a leaf spring and is bent in a substantially square shape in a side view so that the inclined portion on the front panel side is engaged with the spring hook portion of the mounting base by a spring force. The surface panel mounting structure according to claim 2 or 3, wherein   On the inner surface of the upper bottom portion of the mounting base, an engagement protrusion that is bent in a substantially L shape in a side view is provided, and the upper bottom portion of the insertion adapter is curved in a substantially curved ball shape in a plan view. An engaged long hole is provided, and the front panel insertion adapter is inserted into the mounting base of the base surface, and the wide hole portion of the engaged long hole is inserted into the engaging protrusion, and then the front panel The surface panel mounting according to any one of claims 2 to 4, wherein the peripheral edge portion of the narrow hole portion of the engaged elongated hole portion can be engaged with the engaging projection portion by turning Construction.   Engaging protrusions projecting inwardly are provided on the inner peripheral surface of the upper edge portion of the mounting base at equal angular intervals on the circumference, and projecting outward on the outer peripheral surface of the upper edge portion of the plug-in adapter. Engagement protrusions on the front panel are placed on the base panel while the engagement protrusions of the insertion adapter are aligned with the clearances of the engagement protrusions of the mounting base. 5. The engaged protrusion can be engaged with the engaging protrusion by turning the front panel after being inserted into the mounting base of claim 2. Surface panel mounting structure.

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