JPH08149188A - Doorphone set - Google Patents

Abstract

PURPOSE: To provide an excellent doorphone set in which interception is effectively prevented by providing a mount/dismount permission interlocking mechanism permitting mount/dismount of a cover cap only when a calling of a call operation section is made. CONSTITUTION: A gate slave set 1 of a doorphone set is provided with a call button 1a being a call operation section, a mount section 2s to be mounted onto a building member, a cover cap 1c blinding the mount 1d, and a call switch to provide the output of a signal commanding ringing to a call sound section of an in-room master set. Then an engagement piece 1a1 locking the cover cap 1c is removed from the cover cap 1c only when calling is made to the call operation section 1a to attain the removal of the cover cap 1c. Thus, when the cover cap 1c is removed to remove the gate slave set 1 from the building member, the in-room master set rings a call tone, then mischief or theft is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom system which can prevent the entrance slave unit from being stolen.

[0002]

2. Description of the Related Art In most of today's homes, when a visitor who arrives at the entrance performs a call operation such as pressing the call operation unit, a ring tone sounds to notify the resident that there is a visitor. There is a door phone device installed. Moreover, when it comes to high-end doorphone devices, not only the intercom function that enables residents to talk with visitors at the front door while staying in the living room, etc., but it also captures the image of the front door visitors with a TV camera. At the same time, it is equipped with a video monitoring function that displays the appearance of visitors on a monitor TV.

FIG. 3 is an explanatory view showing the structure of the above-mentioned intercom system, and FIG. 4 is a perspective view of a main part showing a door subunit of the above-mentioned intercom system. As shown in FIG. 3, the intercom apparatus includes an entrance slave unit 1 and an indoor master unit 2. The entrance cordless handset 1 is attached to a gatepost or an outer wall of the entrance, and includes a call operation unit 1a for performing a call operation such as pressing by a visitor. The indoor base unit 2 is installed in an indoor living room or the like, and includes a ringing sound unit 2a that sounds a ringing sound when a visitor operates the calling operation unit 1a. The entrance slave unit 1 and the indoor master unit 2 are connected by a signal line L.

[0004] By the way, the entrance slave unit 1 is usually attached to the entrance gate pillar or outer wall with screws by using the attachment screws 1b. In addition, the screw attachment has a structure in which the screw is attached from the outer surface side such as the gate pillar or the outer wall. Therefore, in order to improve the appearance and not to know the attachment point, the cover cap 1c is fitted to the attachment part 1d of the building material after attaching the entrance cordless handset 1, and the screw head of the attachment screw 1b or The attachment hole 1e and the like for passing the attachment screw 1b are blindfolded.

[0005]

However, in the door subunit 1 of the conventional intercom system as described above, the cover cap 1c is fitted into the attachment portion 1d in order to prevent the attachment portion from being identified. Although the device is designed to be blindfolded, it does not have any anti-theft alarm mechanism structurally, it can be easily removed, and there is a problem that it is not easy to get stolen.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an excellent intercom system capable of effectively preventing theft.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a cover cap for concealing an attachment part to a construction material and calling a resident in the invention according to claim 1. In an intercom system including an entrance cordless handset having a call operation unit and an indoor master unit that makes a ringing tone when the call operation unit is operated, only when the call operation of the call operation unit is performed. An attachment / detachment interlocking mechanism for permitting attachment / detachment of the cover cap is provided.

Further, in the invention according to claim 2, the attachment / detachment permission interlocking mechanism is an engagement piece which is disengaged from the cover cap only when the calling operation of the calling operation portion is performed. And

[0009]

With the above construction, in the invention according to claim 1, the door subunit is removed from the construction material without removing the cover cap for concealing the attachment portion to the construction material. In addition, a calling operation must be performed on the calling operation unit in order to remove the cover cap. Accordingly, when the cover cap is removed in order to remove the entrance cordless handset from the construction material for mischief or stealing, the indoor base unit makes a ringing sound, so that mischief or theft can be prevented.

According to the second aspect of the present invention, the engagement piece that normally locks the cover cap is removed from the cover cap only when the calling operation is performed on the calling operation portion. It can be removed and the cover cap can be attached and detached.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a door intercom apparatus according to the present invention will be described in detail below with reference to FIGS. FIG. 1 is a perspective view showing a main part of a door subunit of an intercom device, and FIG. 2 is a perspective view showing an engaging piece for a cover cap of the door subunit.
Since the same parts as those of the intercom apparatus described in the related art are designated by the same reference numerals, detailed description of the same parts will be omitted.

The door subunit 1 of the intercom system includes a call button 1a corresponding to a call operation portion, an attachment portion 1d for attaching to a construction material, and a cover cap 1c for covering the attachment portion 1d. , A calling switch 1s for outputting a signal instructing the ringing sound section (not shown) of the indoor master unit (not shown) to ring.

The call button 1a is a substantially rectangular molded product made of synthetic resin as shown in FIG. 2, and is urged by a spring or the like from the inside to the outside to form a button hole on the surface of the entrance subunit 1. The head of the call button 1a slightly projects from 1f. Further, the call button 1a includes an engagement piece 1a protruding from the side surface of the bottom portion in an L-shaped arm shape.

The attachment parts 1d are provided at two locations, respectively on the upper side and the lower side of the entrance cordless handset 1, and the attachment screw 1b is attached to the step surface parallel to the construction material surface to be attached. round preparative and an engaging piece through holes 1d ₁ for penetrating projecting the Chakuana 1e and the engagement piece 1a ₁ from the inner side for the passage, the ribs 1d ₂ are formed on both side surfaces protruding slightly linearly Prepare

The cover cap 1c is a substantially rectangular synthetic resin molded product that can be inserted into the mounting portion 1d, and is provided with slide grooves 1c ₁ into which the ribs 1d ₂ are fitted, on both side surfaces,
The bottom surface portion is provided with a fitting recess (not shown) into which the tip of the engaging piece 1a integral with the biased call button 1a is fitted. When the cover cap 1c is inserted into the attachment portion 1d, the cover cap 1c blinds the screw head of the attachment screw 1b, the attachment hole 1e, etc., and makes it difficult to know where the attachment portion is with the construction material.

The push switch 1s is arranged below the call button 1a. When the call button 1a is pressed by a visitor or the like and is sunk inside the entrance cordless handset 1, the press switch 1s is pressed by the bottom portion of the call button 1a and turned on.

Therefore, the door subunit 1 of the intercom apparatus constructed as described above is attached to the building material such as the gate post or the outer wall of the entrance as follows. That is,
After attaching the door subunit 1 with the cover cap 1c removed to the building material such as the exterior wall of the entrance, the attaching screw 1b is attached.
Through the mounting hole 1e, tighten the mounting screw 1b,
Attach the entrance cordless handset 1 to the construction material. After that, the call button 1a is pressed so that the tip of the engagement piece 1a is engaged with the engagement piece through hole 1d _1.
Insert the cover cap 1c into the attachment part 1d while fitting the slide groove 1c ₁ into the rib 1d ₂ and finally remove the pressing force of the call button 1a to let the urging force push the call button 1a. Make it protrude. Then, the tip of the engagement piece 1a also projects from the engagement piece through hole 1d ₁ and fits into a fitting recess (not shown) in the bottom surface of the cover cap 1c. Therefore, the cover cap 1c is held by the rib 1d ₂ and the tip of the engaging piece 1a, so that the cover cap 1c does not easily fall off due to vibration or the like.

The entrance cordless handset 1 attached to the building materials such as the entrance gate pillar and the outer wall as described above is unlikely to be stolen for the following reasons. That is, a person who tries to steal the door subunit 1 cannot remove the door subunit 1 from the construction material without removing the cover cap 1c. That is, the cover cap 1c cannot be removed unless the call button 1a is pressed to turn on the push switch 1s. Therefore, in order to prevent the ringing sound portion of the indoor master unit from ringing in the energized state, the door subunit 1 is a construction material. Cannot be removed from. In other words, the stealing of the entrance cordless handset 1 results in calling the resident, which prevents the theft.

The present invention is not limited to the above-described embodiment, the engaging piece does not have to be formed integrally with the calling operation portion, but may be in an interlocking relationship, and the attachment / detachment permission such as the engaging piece is permitted. The interlocking mechanism can be modified in various ways, and also includes a detachment permission interlocking mechanism for these various modifications.

[0020]

Since the intercom system of the present invention is constructed as described above, in the invention of claim 1, the door subunit is constructed without making a ringing sound from the indoor master unit. It becomes impossible to remove from the door intercom device, and it is possible to effectively prevent the theft of the entrance cordless handset by effectively utilizing the ringing sound peculiar to the doorphone device. The effect that it is possible to provide an excellent intercom device that can realize the effect is exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part showing a door subunit of an embodiment of a doorphone device according to the present invention.

FIG. 2 is a perspective view showing an engagement piece for a cover cap of the entrance cordless handset according to the embodiment.

FIG. 3 is an explanatory diagram showing a configuration of a doorphone device.

FIG. 4 is a perspective view of a main part showing a door subunit of a conventional intercom system.

[Explanation of symbols]

1 Entrance cordless handset 1a Calling operation part 1a ₁ Engagement piece (attachment / detachment permission interlocking mechanism) 1c Cover cap 1d Attachment to construction material

Claims (2)

[Claims] 1. An entrance cordless handset having a cover cap for concealing an attachment part to a construction material and a call operation part for calling a resident, and a room that sounds a ringing sound when the call operation part is operated. An intercom device including a base unit, wherein a detachment permission interlocking mechanism for permitting detachment and attachment of the cover cap is provided only when a calling operation of the call operation unit is performed. 2. The door phone apparatus according to claim 1, wherein the attachment / detachment permission interlocking mechanism is an engagement piece that is disengaged from the cover cap only when a calling operation of the calling operation unit is being performed.