JP3030721B2 - Lobby intercom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lobby intercom which is installed at a common entrance of an apartment or the like and has a function that allows a visitor to call a resident and make a call.

[0002]

2. Description of the Related Art FIG. 10 shows an example of a lobby intercom provided at an entrance of an apartment. This lobby intercom is embedded box 2
1. It consists of an inner box 22 and a front panel box 23, and is mounted with the front panel box 23 exposed from the wall surface. The inner box 22 is housed in the embedding box 21 housed in the wall, and the screws 2
6, the inner box 22 is fixed to the embedding box 21. After that, when the front panel box 23 is fixed, the decorative screw 24 is inserted through the screw insertion hole 231 into the inner box 22 and fixed. However, such a conventional structure of the lobby intercom,
When mounting the display panel box 23, a plurality of cosmetic screws 24 are used.
No. 4 was seen, which was not aesthetically pleasing and poor in design.

[0003]

Accordingly, a problem to be solved by the present invention is to improve the design and aesthetics of the front panel box.

[0004]

A lobby intercom according to the present invention proposed to achieve the above object has a flange portion in which a fitting hole is formed on the periphery and at least one set of notches is formed on the lower side. And an inner box in which electric components such as a door phone, a numeric keypad, and a control circuit board are incorporated, an embedding box attached to a hole formed in a wall surface, and a fitting of the inner box. A base fitting having a locking piece formed corresponding to the mating hole and a set of receiving pieces formed corresponding to the notch formed below the flange of the inner box; A display panel attached to the inner box, a corresponding window hole for exposing a part of a numeric keypad, a reverse master key and the like protruding from the box is formed on the front surface, and a front panel frame having an open back surface; From inside the periphery of the panel frame And a front panel box consisting of a decorative rim fixed to the periphery thereof, and a locking piece of a base fitting fixed to the embedding box is fixed to the front panel box. After fitting and locking into the fitting hole of the flange portion of the inner unit box, a pair of mounting screws are screwed in from below the decorative edge fixed to the lower end of the front panel box, thereby securing the inner unit. The above set of receiving pieces formed below the flange portion of the container box is pushed up with mounting screws, and the front panel box is mounted on the base metal with the front panel box exposed from the wall surface.

[0005]

In the lobby intercom of the present invention,
Screw a screw from the inside of the front panel frame in advance, assemble the decorative rim from all sides on the periphery of the front panel frame to form a front panel box, and further secure the inner unit box to the back of the front panel box Integrate. On the other hand, the embedding box is attached to the hole formed in the wall surface, and the base metal is fixed to this embedding box with fixing screws, etc., and the signal wires drawn into the embedding box are used for the electrical parts of the inner box. Connect. Then, by inserting the fitting hole of the inner box into the locking piece of the base fitting and locking it, and further screwing a fixing screw from below the decorative edge fixed to the lower end of the front panel box, This fixing screw pushes up the receiving piece formed at the lower part of the base metal fitting to fix the base metal fitting, so that the front panel box integrated with the inner unit box fixed to the base metal fitting can be It can be fixed in an exposed state. Further, outside the front panel box, the fixing screw is hidden under the lower edge of the front panel box and is not exposed to the outside, so that the appearance is maintained.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a lobby intercom of the present invention, and FIG. 2 is an exploded perspective view of the same. In this lobby intercom, a front panel box in which a door phone 7, a numeric keypad 8, a call button 9 and a reverse master key 11 are arranged is integrated with an inner box, and attached to a base fitting 2 fixed to an embedding box. It is designed to be mounted on the wall of the condominium entrance. The embedding box 1 is a rectangular metal frame, and a plurality of screw holes 1
a is provided. A plurality of knocking holes 1b having different hole diameters are formed on the upper surface, and an opening 1c is provided on the lower surface, so that moisture in the box can be easily discharged. The base fitting 2 is formed of a metal plate frame, and a holding frame 2a is integrally formed on a lower side of the back surface.
To a is fixed a terminal block 2c for connecting the signal line L in a U-shape. A set of receiving pieces 2d for holding a front panel box 4, which will be described later, is formed integrally with a lower portion of the front surface. Further, each corner is cut out, and a screw insertion hole 2 e for the fixing screw 5 is formed corresponding to the screw hole 1 a of the embedding box 1. A locking piece 2f that is inclined upward is cut and formed at the center of each side.

The inner box 3 is a metal box,
An enclosing frame 3a is integrally formed on the rear surface, and accommodates a numeric keypad 8, an intercom 7, and a control circuit board for controlling these. And the outer flange portion 3b
A notch 3c is provided corresponding to the receiving piece 2d of the base fitting 2, and a fitting hole 3d is formed at a position facing each locking piece 2f of the base fitting 2. Here, the upper end edge of the fitting hole 3d is, as shown in FIG.
Has a downward inclined portion 3h corresponding to the locking piece 2f inclined upward. Further, a screw insertion hole 3e is formed in the flange portion 3b, and the fixing screw 6 is inserted from the base metal fitting 2 side and screwed into the front panel box 4 to be integrally fixed. I have. 3f is a master key hole, 9 is a call button, 10 is a display unit, 11 is a master key provided with a round nut 11a, and 12 is a waterproof nonwoven fabric. As shown in FIG. 3, a small hole 3g for draining water is formed in the bottom of the surrounding frame 3a. The display unit 10 is provided on the front surface so as to protrude forward. Table panel box 4 is embedded box 1
Panel frame 13 formed of a hard resin material or the like in a shape covering
And four decorative edges 14 to 17 fixed to the outer periphery of the front panel frame 13. The front panel frame 13
Has a box shape in which the back side, that is, the inner unit box 3 side is opened, and a window hole 13a corresponding to the display unit 10 is formed on the front side, and the numeric keypad 8 protruding from the inner unit box 3, Window holes 13b to 13d for partially exposing the button 9 and the reverse master key 11 are formed. Then, each side wall 13e of the front panel frame 13
Are provided with a plurality of mounting screw insertion holes 13f for inserting mounting screws 19 for mounting the decorative edges 14 to 17. The decorative edges 14 to 17 are formed to have a length corresponding to the left and right side walls and the side walls of the front panel frame 13, and a plurality of mounting holes 14a, 15a, 16a, and 17a are provided on the respective inner side surfaces. Engaging holes 14b to 17b are formed at both ends of each of the decorative edges 14 to 17, and an L-shaped connecting member 18 is fitted into the engaging holes 14b to 17b.
The decorative edges 14 to 17 are connected. Further, as shown in FIG. 5, the decorative edge 17 on the lower end side of the front panel box 4 is provided with a screw hole 17c on the lower surface side, and a mounting screw 20 is screwed into the screw hole 17c. .

Next, an operation of attaching the lobby intercom to the wall surface W will be described. The front panel box 4 is assembled in advance and integrally attached to the inner box 3. That is, as shown in FIG. 4, the coupling tool 18 is fitted into the engagement holes 14b and 17b provided in the four decorative edges 14 to 17,
This front panel frame 1 contacts the peripheral side wall of the front panel frame 13 and
The mounting screws 19 are screwed into the screw holes 14a to 17a of the decorative edges 14 to 17 from the inside of the inside 3 to be fixed, thereby forming the front panel box 4. Next, the front panel box 4 and the inner box 3 Are integrated. At this time, the non-woven fabric 12 is sandwiched between the speaker 7 and the speaker hole 13e (see FIG. 2), and the inverted master key 11 is inserted into the inverted master key hole 13d from the inner unit box 3 side and the front panel box 4 side is inserted. And the round nut 11a is screwed into the screw. In this state, the fixing screw 6 is inserted from the screw insertion hole 3e and screwed into the screw holes provided in the decorative edges 14 to 17, and the inner box 3 is fixed to the front panel box 4 and integrated. Next, the embedding box 1 is housed in the hole provided in the wall surface W, and then the base metal fitting 2 is brought into contact with the embedding box 1 so that the fixing screw 5 is inserted through the screw insertion hole 2e, and is inserted into the screw hole 1a. The base fitting 2 is fixed to the embedding box 1 by screwing. And the pipe P piped into the embedding box 1
, The signal line L is drawn into the embedding box 1 and connected to the terminal block 2c attached to the base fitting 2 in a state of being bent in a U-shape. The terminal block 2c is connected to a control circuit board connected to the doorphone 7, the numeric keypad 8, and the call button 9 via a connector. The signal line is easily connected, and the connector is also used. Since the attachment and detachment are easy, the connection work is extremely simple.

In this state, a fitting hole 3d formed in a flange portion of the inner box 3 is aligned with an upwardly inclined locking piece 2f formed on the surface of the base fitting 2, and the display panel box 4 is lowered. Slide to lock. At this time, the base fitting 2 is inserted through the notch 3c of the flange 3b.
The receiving piece 2d provided at the lower part of the frame fits inside the decoration edge 17. Then, as shown in FIG. 5, the mounting screw 20 is screwed into the screw hole 17c provided in the decorative edge 17 of the front panel box 4, and the receiving piece 2d is pushed upward by the tip of the mounting screw 20. The locking piece 2f inclined upward pushes up the base fitting 2 and fixes the base fitting 2, so that the front panel box 4 exposed from the wall surface is mounted in a state exposed on the wall surface. Further, in a state where the mounting is completed, the terminal block 2c in the embedding box 1 is directed downward, so that there is no problem that a chip of the core wire adheres to the connection terminal screw portion to cause a short circuit (FIG. 7). reference). Further, the front panel box 4 is held by the base fitting 2 via the inner box 3, but the mounting screws 20 and the fixing screws 6 from the inner box 3 side are not visible from the outside, so that the appearance is maintained. (See FIG. 1). The joint between the front panel box 4 and the inner unit box 3 has a decorative edge 1.
Since the decorative edges 14 to 17 are firmly adhered to the wall surface W with 4 to 17 interposed therebetween, there is no gap and the intrusion of water droplets is prevented. Although the numeric keypad 8 is not shown,
Since a rubber material is used on the back surface, and the peripheral portion other than the operating portion is fixed to the inner box 3 side by a ten-key holding bracket, water droplets can be prevented from entering. Further, since the speaker hole 13e is covered with the nonwoven fabric, it is possible to eliminate the intrusion of water droplets. Further, since there is no component on the surface of the inverted master key 11 and a drain hole 3g is formed on the lower surface of the inner box 3, water droplets may enter the box as shown by the arrow A in FIG. Even the drain hole 3
g. Even if water is transmitted from the upper part of the embedding box 1 or the pipe P as shown by arrows B and C in the figure, since the signal line L is bent and connected in a U-shape,
The problem of draining and coming up to the connection terminal 2g of the terminal block 2c is also avoided.

[0010]

As described above, according to the lobby intercom of the present invention, the fitting hole of the inner box integrated with the display panel box is formed in the locking piece of the base fitting to which the embedded box is fixed. After locking together, tighten the mounting screws from below the decorative edge of the lower edge of the front panel box to push up and fix the receiving piece of the base bracket, so that the screws can not be seen from the outside The appearance after mounting is improved. Further, the degree of freedom in designing the front panel box is increased, and the design is enhanced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the appearance of a lobby intercom.

FIG. 2 is an exploded perspective view of a lobby intercom.

FIG. 3 is a bottom view of the inner box.

FIG. 4 is an assembled perspective view of the front panel box.

FIG. 5 is an explanatory view showing a joint state of a display panel box, an inner box, and a base fitting.

FIG. 6 is an explanatory diagram showing signal line connection of a terminal block.

FIG. 7 is an explanatory diagram of a display unit of the front panel box.

FIG. 8 is an explanatory diagram when the inner box is attached to the embedding box.

FIG. 9 is an explanatory longitudinal sectional view showing a state in which the inner box is housed in the embedding box.

FIG. 10 is an overall configuration diagram of a conventional lobby intercom.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Embedding box 2 ... Base fitting 2c ... Terminal block 2f ... Locking piece 2d ... Receiving piece 3 ... Inner unit box 3b ... Flange part 3c ... Notch 3d Fitting hole 3g Drainage hole 4 Display panel box 8 Numeric keypad 10 Display unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/02-1/23 H05K 5/00-5/06

Claims (1)

(57) [Claims] 1. A fitting hole is formed in the periphery, and a flange portion having at least one set of cutouts is formed on the lower side, and electric components such as a door phone, a numeric keypad, and a control circuit board are provided inside the flange portion. A built-in inner box, an embedding box attached to a hole formed in a wall surface, a locking piece formed corresponding to a fitting hole of the inner box, and a flange of the inner box A base fitting having a pair of receiving pieces formed corresponding to the notches formed on the lower side of the inner box, a display unit attached to the inner box, a numeric keypad protruding from the box, and a reverse master A corresponding window hole for exposing a part of a key or the like is formed on the front surface, a front panel frame having an open back surface, and a screw is screwed in from the inside of the periphery of the front panel frame, and is fixed to the periphery. Combined with a front panel box consisting of decorative edges The locking piece of the base fitting fixed to the embedding box,
The inner box box attached to the front panel box
After fitting it into the fitting hole of the flange and locking it,
From the lower part of the decorative edge fixed to the lower end of the
By screwing in the mounting screws, the inner unit box
Remove the pair of receiving pieces formed under the flange of
Push up with attached screws to expose the front panel box from the wall
A lobby intercom characterized by a structure that can be attached to the base bracket in a state where it has been cut.