JPH04355545A - Lobby interphone - Google Patents

Abstract

PURPOSE:To provide the lobby interphone with a light weight able to easily cope with the specification of a card reader and a reverse master key. CONSTITUTION:The interphone consists of a decoration panel block 10 in which an inner box 3 with electric components such as a doorphone, a ten-key, a control printed circuit board or the like are integrated is fitted to a front panel 4 on which an operation section such as a display section and a ten-key are exposed, a recessed box 1 fitted to a hole formed onto a wall face, and a mount frame member 2 fitted to the recessed box 1 and assembled to the decoration panel block 10, the inner box 3 is integrated with resin forming processing, and an open hole 3k corresponding to a card loading point of a card reader, a boss 3m to which the card reader is screwed and a punch-hole 3n to which an inverse master key is fitted are provided in advance to the surface of the box 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a lobby intercom that is installed at a common entrance of an apartment building or the like, and allows visitors to call residents and talk to them.

0002

[Prior Art] Conventional lobby intercoms installed embedded in entrances of condominiums, etc., have built-in electrical components such as an embedded box 21, a numeric keypad, a display, and a doorphone slave, as shown in Figure 6. The embedded box 21 is installed in a hole (not shown) formed in the wall, the inner box 22 is fixed to the embedded box 21, and finally the decorative The front panel 23 is fixed to the wall by screwing in screws 24. By the way, with recent lobby intercoms like this, when unlocking the common entrance door,
There are models that allow you to attach a card reader in place of the keyhole of the reverse master key, but with conventional models, you can only choose between the reverse master key and the card reader, and if you select the reverse master key specification, It is necessary to form holes corresponding to both the internal box and the front panel during installation for installation.If you select the card reader specification, as shown in Figure 7, it is necessary to form holes corresponding to both the internal box and the front panel. Card insertion hole 22 compatible with both 22 and front panel 23
c, then use the mounting bracket 53 to attach the screw 55.
It was customary to attach a card reader 54 to the card. However, in these cases, conventional lobby intercoms are formed by processing a metal plate, so the inner surface of the internal box where the reverse master key and card reader are attached requires secondary processing of studs and hole square spacers. In addition, since the internal box 22 is formed by processing a metal plate, if you want to install a doorbell, numeric keypad, circuit board, etc. in a predetermined position inside the box 22, you need to install it in advance. It was necessary to use auxiliary parts such as screws and mounting brackets to attach it to a mounting plate of a specific shape with a step or the like (not shown).

0003

[Problems to be Solved by the Invention] The present invention has been made in view of the above circumstances, and is designed to reduce the weight of a lobby intercom, and to easily attach a card reader and reverse master key to the internal box. The purpose of the present invention is to provide a lobby intercom that can easily accommodate both reverse master key and card reader specifications.

0004

[Means for Solving the Problems] A lobby intercom of the present invention proposed to achieve the above object includes a display section,
A decorative panel box consists of a front panel that exposes the operation parts such as a numeric keypad, and an internal box that houses electrical components such as a doorbell, numeric keypad, and control circuit board inside, and a hole formed in the wall. It consists of an embedded box that is attached to the inner box, and a mounting frame member that is attached to the embedded box so that it can be assembled to the decorative panel box, and the inner box is integrally molded by resin molding. It has a structure in which an opening hole corresponding to the card insertion slot of the card reader, a boss portion for attaching the card reader with a screw, and a hole portion for attaching a reverse master key are provided in advance.

[0005]

[Operation] According to the lobby intercom of the present invention, when the lobby intercom is used as a card reader, the card reader is directly screwed to the boss portion of the card reader. In addition, when used as a reverse master key specification, the hole for attaching the reverse master key is removed and the reverse master key is installed.

[0006]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. 1 and 2 show essential parts of the present invention, with FIG. 1 showing a rear view of the internal box, and FIG. 2 showing a side sectional view. As shown in these figures, the inner box 3 is integrally formed by resin molding with a surrounding wall 3a provided for accommodating electrical components and circuit boards, and a plurality of bosses 3h protruding inside the surrounding wall 3a. is formed. Inside thereof, a numeric keypad 8, a door phone 5, and electrical components such as a control circuit board for controlling these are attached to the protruding surface of the boss portion 3h by screws. In addition, such an internal box 3 has a rib frame 3j for blocking external light from sources other than the doorbell camera section, an opening 3k corresponding to the card insertion slot of the card reader, and a reverse master key for attaching it. A punching hole 3n, that is, a knockout hole is formed. Further, the inner box 3 is provided with a boss portion 3m for directly attaching a card reader.

FIG. 3 shows an exploded perspective view of the lobby intercom of the present invention. This lobby intercom is a doorbell,
A front panel 4 on which a numeric keypad, a call button, and a reverse master key are arranged is integrated with an internal box 3 using screws 7 to constitute a decorative panel box 10. The decorative panel box 10 is attached to the embedded box 1 by the attachment frame member 2, so that the lobby intercom is attached to the wall of the common entrance of the condominium. The embedded box 1 is a rectangular metal frame, and a plurality of screw holes 1a are provided on the periphery of the front surface. A plurality of wire entry holes 1b having different hole diameters are formed on the upper surface, and an opening 1c is provided on the lower surface, so that water inside the box 1 can be easily discharged. The mounting frame member 2 is made of a metal plate frame, and a holding frame 2a is integrally molded on the lower side of the back side.
A terminal block 2c for connecting the signal line L in a U-shape is fixed to this holding frame 2a. And at the bottom of this front,
A receiving piece 2d for holding the front panel box 4, which will be described later, is integrally formed. Further, each corner portion is cut out, and a screw insertion hole 2e for a fixing screw 5 is formed corresponding to the screw hole 1a of the embedded box 1. Furthermore, an upwardly inclined locking piece 2f is cut and raised in the center of each side, so that it can be attached to the front panel 4. The front panel 4 has an opening 4a that exposes the display section 20, an opening 4b that exposes the numeric keypad 8, and an opening 4 for the call button of the doorbell 5.
c etc. are formed. Further, an opening 4d is provided at the bottom of the front panel 4 to correspond to a card insertion slot of a card reader, and an opening 4e for a reverse master key is also installed.

As shown in FIGS. 4 and 5, the internal box 3
The surrounding wall 3a has a size corresponding to the opening formed by the flange portion 3b and protrudes rearward, and therefore, even when water droplets such as rainwater enter,
Water droplets are guided to fall along the paths shown by arrows in FIG.

[0009]

[Effects of the Invention] According to the present invention, since the internal box is molded with resin, the weight can be reduced, and the opening hole and boss portion for attaching the card reader and the hole for attaching the reverse master key are pre-prepared. Since it is provided, it can easily be used with reverse master keys and card readers.

[Brief explanation of drawings]

FIG. 1 is a rear view of an internal box forming a main part of a lobby intercom of the present invention.

FIG. 2 is a vertical cross-sectional structural view of an internal box that forms a main part of the lobby intercom of the present invention.

FIG. 3 is an exploded perspective view of the lobby intercom of the present invention.

FIG. 4 is a rear perspective view of the internal box.

FIG. 5 is a partially enlarged vertical cross-sectional view of the surrounding wall.

FIG. 6 is an exploded perspective view of a conventional lobby intercom.

FIG. 7 is an explanatory diagram of an internal box of a conventional lobby intercom.

Claims (1)

[Claims] [Claim 1] A decorative panel box consisting of a front panel that exposes the operation parts such as a display and a numeric keypad, and an internal box that houses electric components such as a doorbell, a numeric keypad, and a control circuit board inside. , an embedded box that is attached to a hole formed in a wall surface, and a mounting frame member that is attached to this embedded box so that it can be assembled to the decorative panel box, and the inner box is made of resin. It is integrally formed by molding process,
This lobby intercom has a structure in which an opening hole corresponding to a card insertion slot of a card reader, a boss part for attaching the card reader by screwing, and a hole part for attaching a reverse master key are provided in advance.