JPH0828764B2 - 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 installed at a common entrance of an apartment or the like, which has a function of allowing a visitor to call a resident to make a call.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional lobby intercom installed in the entrance of a condominium has a built-in electric box box, a ten-key pad, a display unit, an intercom unit, etc. It is composed of the inner container box 22 and the front panel 23, and the embedding box 21 is attached to the hole (not shown) formed in the wall surface, and the inner container box 22 is fixed to the embedding box 21 with the screw 25, Finally, the cosmetic screw 24 is screwed into the inner unit box 22 side from the screw insertion hole 231 of the front panel 23 so that the front panel 23 can be installed on the wall surface. However, in the lobby intercom having such a conventional structure, the decorative screw 24 is exposed from the front panel 23 when mounted on the wall surface, and even when mounted on the wall surface, the decorative screw 24 is screwed while holding the front panel 23 by hand. It had to be put in, and the installation work was troublesome.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a smart appearance because the cosmetic screws are not exposed on the front panel, and the wall surface while holding the front panel by hand. The objective is to provide a lobby intercom that is easy to install and does not have to be installed on the floor.

[0004]

The lobby intercom of the present invention, which is proposed to achieve the above object, has an embedded box mounted in a wall, an internal box containing an internal circuit, and a front panel. And a decorative panel block configured by integrally assembling, and is attached to the embedded box, consisting of a mounting frame member engaged with the flange portion of the internal unit box integrated with the decorative panel block, At least the upper frame of the mounting frame member is provided with engaging projecting pieces projecting obliquely upward, and the lower frame is projecting a pair of left and right pushing up pieces, which is integrated with the decorative panel block. The formed flange portion is formed with an engagement hole having an upwardly inclined taper portion into which the engagement projection piece is fitted and which is inclined upward, and a lower piece of the decorative panel block has a pair of engagement holes. Screw operation Forms a comprises a screw cowpea having a head which is concealed in the operation hole, the pair
The push-up piece further has a screw hole into which the screw rod is screwed,
The screw rod was screwed into the screw hole of the push-up piece from below.
Sometimes, the head of the screw rod pushes the pair of mounting frame members.
Push up the upper piece and push the engaging protrusion of the mounting frame member into the internal unit.
The structure is provided with screw tightening means for tightening and holding the engaging hole of the box . The lobby inn according to claim 2
The terphone has the screw rod in place on the screw rod.
There is also a nut that goes up together with
Screw the screw rod into the screw hole of the push-up piece from below.
The nuts that rise together with the screw
Pushes up the pair of push-up pieces of the mounting frame member,
Tighten the engaging projection of the frame member to the engaging hole of the internal box
The structure is provided with a screw tightening means for holding.

[0005]

According to the lobby intercom of the present invention as described above, the front panel exposing the operation portion such as the display portion and the ten-key pad and the electric parts such as the intercom, the ten-key pad, and the control circuit board are incorporated therein. Insert the engaging projection of the mounting frame member fixed to the embedded box into the back surface of the decorative panel block that is integrally assembled with the internal unit box, that is, into the engaging hole formed in the flange of the internal unit block. After temporarily fixing it, the screw bar of the screw tightening means hidden in the lower piece of the decorative panel block is rotated from below by a screwdriver or the like to be screwed, and the mounting frame member is pushed up by the screw tightening means. Thus, the engagement protrusion of the mounting member is clamped and held in a state of being pressed against the tapered portion formed above the engagement hole of the inner unit block without forming a gap.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a mounting structure of a decorative panel block including a screw tightening means which is an essential part of the present invention.
The screw tightening means 5 forms a nut accommodating recess 42 at an appropriate position on the back surface of the front panel 4, and the head 5 is formed in the recess 42.
The nut 5d screwed into the tip of the screw rod 5b with the a pointed downward is housed in a non-rotatable manner, and the nut 5d is fitted in the middle of the screw portion of the screw rod 5b. Another nut 5c that rises together with 5a pushes up the push-up piece 2a protruding from the lower piece of the mounting frame member 2. Such a screw rod 5b has a head 5
a is a screw operation hole 4 formed in the lower piece 41 of the front panel 4.
Since it is screwed into the nut 5d which is concealed in the housing 3 and accommodated in the nut accommodating recess 42, the screw rod 5b is rotated in the direction opposite to the screw advancing direction and loosened, as shown in FIG. Then, after the engaging projection piece 2f of the mounting frame member 2 is fitted into the corresponding engaging hole 3f formed in the flange portion 3b of the inner unit block 3 and temporarily fixed, the lower piece 41 of the front panel 4 is attached. If a screwdriver or the like is inserted through the formed set of screw operation holes 43 and the screw rod 5b is screwed, the nut 5c also rises as the screw rod 5b rises. The push-up piece 2a is pushed upward. Therefore, the engagement projection piece 2f of the mounting frame member 2 which is fitted and temporarily fixed in the engagement hole 3f of the inner unit box 3 moves to such an extent that no clearance is generated in the tapered portion above the engagement hole 3f. As a result, the mounting member 2 is firmly fixed in a state of being clamped by being clamped from above and below by both the engaging hole 3f and the nut 5c of the screw means 5, as shown in FIG. Become. The nut 5c of the screw tightening means 5 shown in FIGS.
Also has an action of preventing the screw rod 5a from falling off when the screw rod is loosened. If the head portion 5a of the screw rod 5b is formed to have a sufficient length and a diameter larger than that of the screw operation hole 43, such a nut 5c is not necessary, and the head portion 5a is used to attach the mounting frame member 2 to the mounting frame member 2. Just push it up. According to this structure,
The screw rod 5b is fitted in the screw hole 5e of the upper piece 2a .
Therefore, unless you remove the screw tip 5b from the screw hole 5e,
This configuration is known because the panel block cannot be pulled out forward.
For those who do not have a decorative panel block installed
The effect is that it cannot be removed from the device.

FIG. 3 shows an exploded perspective view of such a lobby intercom of the present invention. The lobby intercom includes an embedding box 1, a mounting frame member 2, an inner unit box 3, and a front panel 4. Here, the embedding box 1 is a rectangular metal box, and a plurality of screw holes 1a are provided in the peripheral edge of the front surface. Then, on the upper surface, a plurality of wire insertion holes 1b having different hole diameters for inserting the signal wire and the power supply wire routed in the wall are formed, and on the lower surface, an opening 1c is provided,
The water inside the box 1 is easily discharged. In addition, the mounting frame member 2 includes the flange portion 3b of the inner unit box 3.
Behind the rectangular metal frame 2b,
A metal horizontal frame 2d provided with c is integrated to form a frame body, and the terminal block 2c has a signal line 8 such as a flat cable having a connector 8a at its tip.
Has been derived. The terminal block 2c is connected to the signal line led out into the embedding box 1 through the entry hole 1b of the embedding box 1. Further, the upper and lower frame pieces and the left and right frame pieces of the metal frame 2b of the mounting frame member 2 are engaged and fitted into a plurality of engagement holes 3f provided on the flange portion 3b side of the inner unit box 3. The projecting piece 2f is formed by cutting and raising by punching, and its lower frame piece receives a set of notches 3c formed in the corner portion on the lower half side of the flange portion 3b of the inner unit box 3. The push-up piece 2a is formed to project. In addition, 2e is a long hole provided for fixing to the embedding box with a screw, and is inclined and punched for position adjustment. On the other hand, the flange portion 3b of the inner unit box 3 having the above-described structure has the cutout portions 3 in which the corner portions at the four corners are cut out.
c is provided, and on the upper, lower, left, and right side pieces, engaging holes 3f corresponding to engaging projecting pieces of the mounting frame member 2 described later and the front panel 4 are fixed by screws 7 It has become. A numeric keypad, a door phone, and other circuit boards are mounted in the surrounding wall 3a of the inner unit block 3 and the back plate 6 is covered on the back surface of the back plate 6
From the opening 6a formed in a part of the
A signal line 9 such as a flat cable provided with is derived. Further, since the sloped surface 30 that descends to the rear side is formed on the surrounding wall 3a of the inner unit box 3, when water droplets such as rainwater enter from the gap created between the decorative panel block 10 and the wall surface W. However, the water droplets that have entered do not enter the inner unit box 3 and are guided to fall along the inclined surface 30. The front panel 4 has openings 4a to 4d corresponding to the display section, operation keys such as a numeric keypad, and a reverse master key.
When fixed by means such as a sticker, a display panel exposed from the surface of the inner box 3, an operation key such as a numeric keypad, and a decorative panel block 10 having an inverted master key exposed are constructed. The lower piece 41 of the decorative panel block 10 is provided with the pair of screw tightening means 5 as described above, and a set of screws formed on the lower piece 41 of the decorative panel block 10 is provided. The decorative panel block 10 can be tightened and fixed to the mounting frame member 2 attached to the embedding box 1 by inserting a driver through the operation hole 43 and screwing the screw rod 5a.

FIG. 4 shows an assembling procedure of the decorative panel block and the mounting frame member, and FIGS. 5 and 6 are views showing the structure of the mounting frame member. As shown in these drawings, the back plate of the decorative panel block 10 formed by integrally assembling the front panel 4 and the inner unit block 3 with the screw 7, that is, the back plate covered on the surrounding wall 3a of the inner unit box 3. A flat cable 9 provided with a connector 9a at its tip is led out from the opening 6a of the terminal frame 2c on the back plate 2a of the mounting frame member 2 fixed to the embedded box 1 mounted on the wall surface W with screws 7.
The flat cable 8 having a connector 8a at its tip is connected to the terminal block 2c. A signal line and a power line (not shown) introduced into the embedded box 1 mounted in the wall W are connected to the terminal block of the mounting frame member 2.

According to the lobby intercom having such a structure, the wiring work between the circuit board in the inner unit block 3 and the flat cable 9 and the signal line or power line introduced into the embedded box 1 and the mounting frame member 2 are carried out. Since the wiring work to the terminal block 2c can be performed separately in advance, if the wiring work is completed on both sides, the connector 9a provided at the tip of the flat cable 9 led out from the rear surface of the decorative panel block 10 can be used. Is required for the lobby intercom by simply connecting the to the connector 8a provided at the end of the flat cable 8 led out from the terminal block 2c provided on the back plate 2a of the mounting frame member 2 fixed to the embedded box on the wall surface with screws. Wiring work can be performed easily.

[0010]

According to the lobby intercom of the present invention,
Since the screws are not visible from the front panel side, the appearance is also smart. Further, since the front panel is held by hand and the time and effort for mounting it on the wall surface are not required, the mounting work is extremely simple.

[Brief description of drawings]

FIG. 1 is a structural explanatory view (a state in which a screw is loosened) of a screw tightening means of a lobby intercom, which is an essential part of the present invention.

FIG. 2 is a structural explanatory view (a state in which a screw is tightened) of a screw tightening means of a lobby intercom, which is an essential part of the present invention.

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

FIG. 4 is a diagram showing a state in which a decorative panel block is assembled to a mounting frame member.

FIG. 5 is a front view of a mounting frame member.

FIG. 6 is a side view of a mounting frame member.

FIG. 7 is an exploded perspective view showing a structure of a conventional lobby intercom.

[Explanation of reference numerals] 1 ... Embedded box 2 ... Mounting frame member 2f ... Engaging projection piece 2a ... Push-up piece 3 ... Inner box 3f ... Engagement hole 5 ...・ Screw tightening means 5b ・ ・ ・ Screw rod 4 ・ ・ ・ Front panel 10 ・ ・ ・ Decorative panel block 43 ・ ・ ・ Screw operation hole

Continuation of the front page (56) References JP-A-63-302650 (JP, A) JP-A-4-249952 (JP, A) Actual development: Sho-58-183013 (JP, U)

Claims (2)

[Claims] 1. A decorative panel block configured by integrally assembling an embedding box mounted in a wall, an internal unit box containing an internal circuit, and a front panel; and mounting to the embedding box. is made more and the mounting frame member engaged with the flange portion of the internal unit box integrated with the decorative panel block, said mounting frame member protrudes at least the upper frame, an oblique upward Kakarigo突A pair of left and right push-up pieces are provided on the lower frame so as to project, and the flange portion integrated with the decorative panel block is inclined in an obliquely upward direction to fit the engaging projection piece. An engagement hole having a tapered portion at the upper portion is formed, and a set of screw operation holes is formed at the lower piece of the decorative panel block, and a concealed head portion is provided in the operation hole. Left and right above including screw rod The pair of push-up pieces are used for screwing the screw rod.
It has a di-hole, the threaded rod is screwed from below into the screw hole of the push-up piece
When the head of the screw rod is
A lobby intercom having a structure including a screw tightening unit that pushes up a push-up piece to hold an engaging projection piece of the mounting frame member in an engaging hole of the inner unit box . 2. The screw rod is provided at a predetermined position of the screw rod.
A nut that rises together with the above is further provided, and the screw rod is screwed into the screw hole of the push-up piece from below.
The nut that rises together with the screw rod when
Pushes up the pair of push-up pieces of the mounting frame member,
Tighten the engaging protrusion of the mounting frame member into the engaging hole of the internal box.
A structure having a screw tightening means for holding the same.
Lobby intercom described in.