JP3551471B2 - Wall-mounted electronics - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an embedding box which is embedded in a recess formed in a wall surface and is attached and fixed to the wall surface, and is connected to the embedding box and mounted in a state exposed from the wall surface, and an inner unit box The present invention relates to a wall-mounted electronic device such as a lobby intercom configured by combining with a decorative panel box to which is attached.
[0002]
[Prior art]
As conventional lobby intercoms, there are those shown in FIGS. 6 and 7 and those shown in FIG. 8, and those described in Japanese Utility Model Laid-Open No. 5-217474 and shown in FIGS. .
The lobby intercom R10 shown in FIGS. 6 and 7 is formed by a member formed to be bent forward and obliquely upward at the upper end of the front surface 101 of the embedding box 100 embedded and fixed in the recess U provided in the wall surface K. A hook piece 111 is provided integrally, and a mounting piece 112 bent horizontally and formed forward is provided integrally at a lower end portion. On the other hand, an L-shaped bent piece 131 extending downward and integrally with the inner panel box 130 in the decorative panel box 120 is formed.
[0003]
The screw portion 151 of the mounting screw 150 is screwed into a screw hole formed in the mounting piece 112 and the bent protrusion 131 via a rubber washer 140, and in a state shown in FIG. By inserting a screwdriver into the opening 122 of the lower plate portion 121 and turning the mounting screw 150 in the tightening direction, the inner unit box 130 is tightened toward the embedding box 100 as shown in FIG. By fixing the inner box 130, the decorative panel box 120 is fixed to the wall surface K.
[0004]
However, in the lobby intercom R10, as shown in FIGS. 6 and 7, the fastening direction of the mounting screw 150 is vertical, that is, parallel to the wall surface K, so that there is a problem that mounting work is difficult.
In addition, when the mounting screw 150 is rotated in the tightening direction, the position of the mounting screw 150 is shifted due to friction between the mounting bracket 150 and the rubber washer 140. There was a problem that would emerge from the.
[0005]
The lobby intercom R20 shown in FIG. 8 is a locking piece bent forward and obliquely upward at the upper end of the front face 201 of the embedding box 200 embedded and fixed in the recess U provided in the wall surface K. 211 is provided integrally, and a mounting piece 212 is formed integrally at the lower end and bent outward and obliquely upward toward the front. On the other hand, a bolt insertion hole 222 is provided in a lower plate portion 221 of the decorative panel box 220 in which the inner unit box 230 is housed, and a locking protrusion facing the locking hook 211 is formed in the upper plate portion 223. A part 224 is provided.
[0006]
Then, the mounting screw 250 is inserted into the bolt insertion hole 222 of the lower plate portion 221 of the decorative panel box 220, and the mounting screw 250 is screwed with a screwdriver with the head 251 abutting against the hole wall of the lower plate portion 221. By rotating the screw 250 in the tightening direction, the screw 250 is screwed, and the decorative panel box 220 is pressed against the wall surface K and fixed.
[0007]
However, in the lobby intercom R20, when the mounting screw 250 is tightened, the decorative panel box 220 is pushed upward, and rattling occurs between the locking projection 224 and the locking hook 211. There is a problem that the decorative panel box 220 floats from the wall surface K.
Therefore, recently, a lobby intercom 30R as shown in FIGS. 9 to 11 has been proposed. That is, in the lobby intercom R30, a mounting bracket 310 is fixed to a front surface 301 of an embedding box 300 which is buried and fixed in a recess U provided in a wall surface K. The locking portion 311 is formed integrally with the threaded portion, and the lower end portion is integrally provided with a threaded portion 312 bent diagonally forward and downward.
[0008]
On the other hand, at the lower end of a mounting member 360 mounted on the side wall of the panel 320 on which the electronic device 330 is mounted, a screw threaded portion 361 bent outward and diagonally downward is provided. The outer peripheral frame 370 fixed to 320 is fitted to the locking portion 311 of the mounting bracket 310, and the screw threaded portion 361 of the mounting member 360 is obliquely moved upward with the screw 350 from the threaded portion 312 below the mounting bracket 310. , The panel 320 is fixed to the wall surface K.
[0009]
Such a lobby intercom 30R has a good screw tightening operation. However, if the screw 350 is tightened excessively, there is a problem that the screw threading portion 312 is deformed.
In addition, when the screw 350 is retreated in the anti-tightening direction, there is a problem that the screw 350 comes off from the screw engagement portion 361 and falls off.
[0010]
[Problems to be solved by the invention]
The present invention has been made in view of the conventional problems described above, and the decorative panel box does not come off from the wall surface, does not float, and the fixing direction is set to be oblique, thereby facilitating installation work. It is an object of the present invention to provide a wall-mounted electronic device that does not come off when a mounting bolt is unscrewed, can check the tightening state of the mounting screw, and can prevent deformation of members related to mounting.
[0011]
[Means for Solving the Problems]
A wall-mounted electronic device according to claim 1, which is proposed to achieve the above object, comprises an embedding box embedded in a recess formed in a wall surface and fixedly attached to the wall surface; In a wall-mounted electronic device which is combined with a decorative panel box to which the inner box is attached in a state of being exposed from the wall surface and which is mounted on the inner box, the embedded box side protrudes from the wall surface. An engaging piece and a screw supporting protruding piece are formed above and below, and an inner box containing electronic components is attached to the decorative panel box side, and the engaging piece is inserted. A hole and a bent protruding piece extending obliquely upward are formed on the wall surface side corresponding to the screw supporting protruding piece, and an opening for operating a coupling screw is formed below the decorative panel box. , The coupling screw is The end is rotatably fastened to the screw support piece, and a screw nut is screwed on the screw portion so as to be interposed between the screw support protrusion and the bent protrusion. And the screw head is located below the bent protruding piece, and is mounted so that the screw head is directed downward and obliquely as a whole, and the screw head is attached to the decorative panel box. The structure is such that a jig can be inserted from the operation opening and tightened.
[0012]
In the wall-mounted electronic device according to claim 2, the locking piece and the screw support protrusion are integrally formed on the front surface of the embedding box, and the hook hole and the bent protrusion are formed in the decorative panel box. The structure is formed integrally.
The wall-mounted electronic device according to a third aspect has a structure in which the bent protruding piece is formed by a second mounting bracket having a rectangular shape in a side view, which is fixed to a lower surface of the inner box.
[0013]
5. The wall-mounted electronic device according to claim 4, wherein the fastening nut screwed into the screw portion of the coupling screw forms a fastening surface corresponding to an inclined surface of the bent protruding piece, and a rotation stopper is attached. And
According to a fifth aspect of the present invention, there is provided a wall-mounted electronic device having a structure in which a fastening step having a diameter larger than that of the screw portion is formed between the head of the coupling screw and the screw portion.
[0014]
[Action]
According to the wall-mounted electronic device of the first aspect, the screw tip of the coupling screw is rotatably fixed to the screw support protrusion, and the tightening nut is screwed onto the coupling screw in a state where rotation is prevented. . Therefore, when the connecting screw is rotated in the tightening direction, the connecting screw rotates but does not advance, and the tightening nut screwed into the connecting screw and prevented from rotating moves downward.
[0015]
When the coupling screw is further tightened, a force is applied to the bent protruding piece to be pressed downward by the tightening nut. Therefore, the inner box and the decorative panel box fixed thereto are pushed downward. Therefore, the latching piece of the embedding box inserted into the latching hole of the inner box of the decorative panel box is pushed downward by the hole wall of the latching hole, so that the latching piece is locked to the latching hole. The state is firmly held, and the locking piece does not come off the hook hole.
[0016]
Further, at the time of the above-mentioned tightening, since the bent protruding piece is inclined upward toward the wall surface, a force for pushing the bent protruding piece toward the wall acts simultaneously. Therefore, the decorative panel box is pushed to the wall side via the bent protruding piece and the inner unit box, so that the decorative panel box is prevented from floating.
According to the wall-mounted electronic device of the second aspect, the locking piece and the screw supporting projection are integrally formed on the front surface of the embedding box, and the hook hole and the bending projection are connected to the inner unit. Since it is integrally formed on the back surface of the box, the number of parts can be reduced.
[0017]
According to the wall-mounted electronic device of the third aspect, since the bent protruding piece is constituted by the mounting bracket having a rectangular shape in a side view fixed to the lower surface on the decorative panel box side, it is easy to manufacture each component. .
According to the wall-mounted electronic device of the fourth aspect, the fastening nut screwed into the screw portion of the coupling screw forms a fastening surface corresponding to the inclined upper surface of the bent protruding piece, and the rotation stopper is attached. Since the tightening nut contacts the inclined upper surface of the bending protrusion accurately and over a large area, the tightening force of the tightening nut is reliably transmitted to the bending protrusion, and the decorative panel box is firmly fixed. Can be fixed to the wall.
[0018]
Moreover, since the tightening nut is prevented from rotating by the rotation stopper, the tightening nut accurately moves downward by rotating the mounting screw in the tightening direction and abuts on the bent protruding piece, so that the decorative panel box is Fixing to the wall surface can be reliably performed. According to the wall-mounted electronic device of claim 5, since a pressing step having a diameter larger than that of the screw is provided between the head of the mounting screw and the screw, when the mounting screw is rotated in the tightening direction. When the tightening nut comes into contact with the bent protrusion, the pressing step of the mounting screw also comes into contact with the bent protrusion, so it can serve as a stopper for the tightening nut and check the tightening condition of the mounting screw. As a result, it is possible to prevent the mounting screws from being excessively tightened, thereby preventing the bent protruding pieces and the screw supporting protruding pieces from being deformed.
[0019]
【Example】
Hereinafter, an embodiment of a wall-mounted electronic device according to the present invention will be described with reference to the drawings. In this embodiment, a lobby intercom will be described as a wall-mounted electronic device. However, the present invention is not limited to this, and can be applied to a door phone handset and the like.
[0020]
1 to 4 show a lobby intercom R1 according to a first embodiment. The lobby intercom R1 is embedded in a recess U formed in a wall surface K, and is fixed to the wall surface. An embedding box 10 and a decorative panel box 20 coupled to the embedding box 10 and attached to the embedding box 10 in a state of being exposed from the wall surface K are configured. The decorative panel box 20 incorporates electronic components. An inner unit box 30 is mounted inside.
[0021]
Locking pieces 11 and screw support protrusions 12 are formed above and below the embedding box 10, while the locking pieces 11 are inserted into the upper part of the metal body 40 fixed to the decorative panel box 20. A hanging hole 41 is formed, and a hanging piece 42 protrudes from a lower portion of the metal body 40. The hanging piece 42 has a folding part extending obliquely upward at a predetermined angle θ toward the wall surface K side. A mounting bracket 50 having a curved projection 51 and having a rectangular shape in side view is fixed.
[0022]
The bent protruding piece 51 is provided with a groove 52 for screw insertion (see FIG. 3), and the coupling screw 60 is inserted into the groove 52 obliquely upward toward the wall surface. .
The coupling screw 60 has its tip rotatably fixed to the screw support protruding piece 12, and the screw portion 61 is provided with a tightening nut 70, which is prevented from rotating, with the screw support protruding piece 12 and the bent protruding piece 51. The screw head 62 is located below the bent protruding piece, and is mounted so that the screw head 62 is directed downward and obliquely upward as a whole. The screw head 62 can be tightened by inserting a jig (not shown) through the operation opening 21 provided below the decorative panel box 20.
[0023]
The coupling screw 60 is provided with a pressing step 63 having a diameter larger than that of the screw part 62 between the head part 61 and the screw part 62.
The tightening nut 70 has a long plate-like shape having a screw hole 72 formed in the center, and a tightening surface 71 corresponding to the inclined surface 51a of the bent protruding piece 51 is formed. A tool 80 is attached.
[0024]
Locking pieces 81 and 82 are bent at both ends of the rotation stopper 80.
Further, a pair of E-rings 91, 91 for securing the screw portion 62 to the screw support protrusion 12 are fixed to upper and lower portions of the screw portion 62 of the coupling screw 60 inserted into the screw support protrusion 12. ing.
[0025]
The embedding box 10 has an operation opening 18 (see FIG. 3) for fitting the inner box 30 therein.
In the embedding box 10, flanges 15 and 16 (see FIG. 3) in the form of vertically long plates for screwing and fixing to the wall surface K are embedded at the left and right ends of the front surface in a state of being embedded in the recess U of the wall surface K. It protrudes outward.
[0026]
Next, an attaching operation when attaching and fixing the decorative panel box 20 to the embedding box 10 in the lobby intercom R1 having the above configuration will be described with reference to FIGS.
The embedding box 10 is embedded in the recess U provided on the wall surface K as described above, and the flange portions 15 and 16 at both left and right ends thereof are fixed to the wall surface K with screws.
[0027]
In this state, as shown in FIG. 1, the decorative panel box 20 to which the inner box 30 is attached is covered so as to cover the front surface of the embedding box 10 and the flanges 15 and 16.
At this time, the hooking piece 11 of the embedding box 10 is engaged with the hook hole 41 of the metal body 40, and is supported by the screw supporting projection 12 of the embedding box 10 and the fastening nut 70 is screwed in advance. The proximal end of the screw portion 62 of the coupling screw 60 is inserted from the front side (wall surface side) into a screw insertion groove 52 (see FIG. 3) formed in the bent protruding piece 51 of the mounting bracket 50.
[0028]
In this state, a screwdriver (not shown) is inserted into the operation opening 22 of the lower plate portion 21 of the decorative panel box 20 from a diagonally lower side, and the coupling screw 60 is turned in the tightening direction with the screwdriver. Then, since the coupling screw 60 is supported by the screw supporting projection 12 in a state where it is prevented from coming off, it rotates but does not screw toward the wall surface K, and is screwed into the coupling screw 60. The tightening nut 70 moves toward the bent protrusion 51 of the mounting bracket 50.
[0029]
As described above, when the tightening nut 70 moves toward the bending protrusion 51 of the mounting bracket 50, the inclined tightening surface 71 of the tightening nut 70 causes the bending protrusion 71 of the mounting bracket 50 to move as shown in FIG. It contacts the inclined upper surface of the piece 51.
When the mounting screw 60 is further turned in the tightening direction in the contacted state, the tightening nut 70 moves downward, and the mounting bracket 50 to which the tightening nut 70 is abutted is pushed downward, and the inner unit box 30 is pressed. And the decorative panel box 20 are pushed downward.
[0030]
Thereby, the locking state of the locking piece 11 of the embedding box 10 and the locking hole 41 of the metal body 40 on the decorative panel box 20 side is strengthened, and the locking piece 11 comes off from the locking hole 41. Nothing.
Further, at the time of the above-mentioned tightening, since the bent protrusion 51 is inclined upward toward the wall surface K, a force for pushing the bent protrusion 51 toward the wall also acts. Therefore, the decorative panel box 20 is pushed to the wall side via the bent protruding piece 51 and the metal body 40, and is prevented from rising.
[0031]
FIG. 5 shows a lobby intercom R2 according to a second embodiment of the present invention. In this lobby intercom R2, the fastening nut 70A is formed in a symmetrical shape in the left-right direction and the front-rear direction.
When the coupling screw 60 is turned in the tightening direction, a part of the tightening nut 70A comes into contact with the inclined upper surface of the bent protruding piece 51 of the mounting bracket 50.
[0032]
Thereby, friction between the fastening nut 70A and the inclined upper surface of the bent protruding piece 51 of the mounting bracket 50 is reduced.
When the tightening nut 70A is used, since a rotation stopper is not required, the number of parts can be reduced and the structure can be simplified.
In the above-described embodiment, the case where the mounting bracket 50 is provided has been described. However, the present invention is not limited to this, and the bent protruding piece 51 is integrally formed below the metal body 40 without providing the mounting bracket 50. Is also good.
[0033]
【The invention's effect】
As described above, according to the wall-mounted electronic device according to the present invention, when the coupling screw is rotated in the tightening direction, the decorative panel box is pushed downward via the tightening nut. Since the engagement between the locking hook on the box side and the hook hole formed in the inner box on the decorative panel box side does not come off, and the decorative panel box is pushed even when facing the wall side, The panel box can be firmly fixed to the wall.
[0034]
In addition, since the operation of turning the coupling screw in the fixing direction, that is, in the tightening direction with a screwdriver or the like can be performed from the front diagonal direction with respect to the wall surface, the mounting work is easy.
Further, since the coupling screw is rotatably fixed to the screw support protrusion formed on the embedding box side, it does not come off.
[0035]
Further, in the case where the connecting screw is provided with a pressing step having a diameter larger than the screw portion, when the pressing step is turned in the tightening direction, the pressing step comes into contact with the bent protruding piece on the decorative panel box side. In order to function as a stopper for the tightening nut, it is possible to check the tightening degree of the connecting screw, prevent over-tightening of the connecting screw, and prevent deformation of the bent protruding piece and the screw supporting protruding piece. be able to.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a state before fastening with a coupling bolt in a lobby intercom according to a first embodiment as an example of a wall-mounted electronic device according to the present invention.
FIG. 2 shows a state where the lobby intercom according to the first embodiment is fastened by a coupling screw.
FIG. 3 is a perspective view showing a state before the lobby intercom of the first embodiment is attached.
FIG. 4 is a perspective view showing an attached state of a coupling screw, a fastening nut, and a rotation stopper in the lobby intercom of the first embodiment.
FIG. 5 is a longitudinal sectional view showing a state where the lobby intercom according to the second embodiment is fastened by a coupling screw.
FIG. 6 is a longitudinal sectional view showing a state before tightening by a mounting bolt in a first example of a conventional lobby intercom.
FIG. 7 is a longitudinal sectional view showing a state in which a lobby intercom according to a second conventional example is fastened by mounting bolts.
FIG. 8 is a longitudinal sectional view showing a second example of a conventional lobby intercom.
FIG. 9 is a longitudinal sectional view showing a lower portion of a third example of a conventional lobby intercom.
FIG. 10 is a longitudinal sectional view showing an upper portion of a lobby intercom of a third conventional example.
FIG. 11 is a partial bottom view showing a threaded portion and a screw in a lobby intercom of a third conventional example.
[Explanation of symbols]
R1, R2 Lobby intercom (wall-mounted electronic device)
K Wall surface U Recess 10 Embedding box 11 Locking piece 12 Screw support protruding piece 20 Decorative panel box 22 Operation opening 30 Inner unit box 40 Metal body 41 Hook hole 50 Mounting bracket 51 Bending protruding piece 60 Coupling screw 61 Head 62 Screw part 63 Pressing step part 70, 70A Tightening nut 71 Tightening surface 80 Rotation stopper

Claims (5)

An embedding box embedded in a recess formed in the wall surface and fixedly attached to the wall surface, and coupled to the embedding box, attached in a state exposed from the wall surface, and an inner unit box was attached. In a wall-mounted electronic device configured by combining with a decorative panel box,
On the embedding box side, a locking hook piece protruding from the wall surface and a screw support protruding piece are formed above and below,
On the side of the decorative panel box, an inner box with built-in electronic components is attached, and corresponds to the hook holes for inserting the locking pieces and the screw supporting projections, and extends obliquely upward to the wall side. Forming a bent protruding piece, and an opening for operating a coupling screw is formed below the decorative panel box,
The coupling screw has a distal end rotatably fixed to the screw support piece, and a tightening nut whose rotation is prevented is interposed between the screw support projection and the bent projection. The screw head is located below the bent protruding piece, and is mounted so that the screw head is directed obliquely upward with the screw head as a whole. A wall-mounted electronic device having a structure in which a jig can be inserted and tightened from the operation opening of the decorative panel box. The locking hook and the screw supporting projection are integrally formed on the front surface of the embedding box, and the hooking hole and the bent projection are integrally formed on the decorative panel box. Item 2. A wall-mounted electronic device according to Item 1. 2. The wall-mounted electronic device according to claim 1, wherein the bent protruding piece is configured by a second mounting bracket having a L-shape in side view fixed to the lower surface on the side of the decorative panel box. 3. 4. The structure according to claim 1, wherein the fastening nut screwed into the screw portion of the coupling screw forms a fastening surface corresponding to the inclined surface of the bent protruding piece, and has a structure in which a rotation stopper is attached. The wall-mounted electronic device as described. The wall-mounted electronic device according to any one of claims 1 to 4, wherein a fastening step portion having a diameter larger than that of the screw portion is formed between the head of the coupling screw and the screw portion.

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