JPH05219167A - Electrical equipment and intercom - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the thickness and improve the appearance. [Structure] An attachment member 81 fixed to a fixed portion and a device body 1 attached to the attachment member 81 are provided. Mounting member 81
Is formed of a metal plate material. [Effect] The thickness of the mounting member 81 can be reduced. Mounting member 81
Even when the device body 1 is attached to the, the projecting dimension of the device body 1 from the fixed portion can be made small, and the device body 1 can be made thin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device and an intercom in which a device main body or the like is mounted on a fixed portion via a mounting member.

[0002]

2. Description of the Related Art For example, in an intercom for home use, an intercom body for outdoor use is installed on a wall surface of an entrance, and an intercom body for indoor use is installed in a room.
Then, when a visitor or the like arrives, mutual communication can be performed between the intercom body for outdoor use and that for indoor use.

The intercom body for outdoor use has a switch device for calling facing the outer surface of the case, and a microphone device and a speaker device for conversation in the case.

A mounting member formed of a synthetic resin in a frame shape is used to mount the intercom body on a wall surface or the like.

At the time of installation, first, the mounting member is fixed to the wall surface or the like with a plurality of fixing screws, and then the case is mounted to the mounting member.

[0006]

However, in the past, since the mounting member was formed of a synthetic resin material, the wall thickness becomes thicker in order to secure the required strength. Therefore, if the intercom body is attached to this attachment member, the size of projection of the intercom body from the wall surface or the like becomes large and the appearance is impaired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric device and an intercom that are thin and have an improved appearance.

[0008]

According to a first aspect of the present invention, there is provided an attachment member fixed to a fixed portion and an equipment main body attached to the attachment member, the equipment main body including an electric circuit portion. Having a case that is housed, a hook is provided on the inside of one end of the mounting surface of the case, and a mounting screw insertion portion is provided on the other end, and the mounting member is made of a metal plate material.
A locking claw with which the hooking claw is engaged is provided at one end so as to project, and a mounting hole into which the mounting screw is screwed is provided at the other end.

According to a second aspect of the present invention, there are provided a plurality of intercom bodies, each of which includes an attachment member fixed to the fixed portion and an intercom body attached to the attachment member and provided with a switch device, a microphone device and a speaker device. In an intercom that enables mutual communication between the intercom body, the intercom body has a case accommodating an electric circuit section, and a hooking claw is provided on one inner side of a mounting surface of the case and the other end side is provided. A mounting screw insertion portion is provided, the mounting member is made of a metal plate material, and a locking claw with which the hooking claw engages is projectingly provided at one end, and a mounting hole into which the mounting screw is screwed is provided at the other end side. It is provided.

According to a third aspect of the present invention, in the first or second aspect of the invention, the case is a front case having a hooking claw projecting inside one end of the back surface, and a recess provided at one end is engaged with the hooking claw. And a back cover fitted to the back of the front case,
The hooking claw is engaged with the locking claw of the mounting member through the recess of the back cover.

[0011]

According to the first aspect of the present invention, at the time of mounting the device body, after fixing the mounting member to the fixed portion, the hooking claw inside the one end of the case is engaged with the locking claw of the mounting member and hooked, , Attach the other end of the case to the mounting member with the mounting screw. And
In the mounted state of the device body, the mounting member is made of a metal plate material and has a small thickness, so that the protruding size of the device body from the fixed portion is small.

According to the second aspect of the present invention, at the time of mounting the intercom body, after fixing the mounting member to the fixed portion, the hooking claw inside one end of the case is engaged with the locking claw of the mounting member to hook.
Also, attach the other end of the case to the mounting member with the mounting screw. Further, when the intercom body is mounted, the mounting member is made of a metal plate material and has a small thickness, so that the protruding dimension of the intercom body from the fixed portion is small.

According to the third aspect of the invention, the recess of the back cover is engaged with the hooking claw of the front case, and the back cover is attached to the front case. And, the locking claw of the mounting member is passed through the recess of the back cover, and the hook claw of the front case is engaged with the locking claw of the mounting member,
The case is attached to the attachment member.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

In the figure, an intercom body 1 as a device body includes a case 2, a switch device 3, a microphone device 4, and a speaker device 5.

The case 2 includes a front case 6 made of a synthetic resin in a frame shape having an opening on the back side, and a back cover made of a synthetic resin fitted inside the back side of the front case 6 in a fitted state. 7 and 7.

The switch device 3 includes a button body 11 arranged on the front surface of the front case 6. The button body 11 is formed in a substantially quadrangular shape having an area relatively larger than the area of the front case 6, and substantially L-shaped support piece portions 12 are provided on both sides of the inner surface of the upper end and each support is formed. A projecting portion 13 is projectingly provided on the outer surface of the tip end of the piece portion 12, and a locking claw 14 having a projecting claw portion 14a on the lower surface of the tip is projectingly provided at the center of the inner surface of the lower end.

The front case 6 is provided with a concave portion 15 into which the button body 11 is fitted and arranged, and insertion holes 16 are formed on both sides of the upper end of the concave portion 15 for inserting the respective support piece portions 12. .. The distance between the outer edge portions of both insertion holes 16 is substantially the same as the distance between both support piece portions 12, and each projection 13 is inserted into each insertion hole 16 from the front with each support piece portion 12 elastically deformed. By doing so, the protrusion 13 engages with the edge portion 17 of the insertion hole 16 to prevent it from coming off. Therefore, the button body 11 is attached to the front case 6 such that the lower end side can be opened and closed and rotated about the upper end side as a fulcrum.

A support wall 18 is provided on the outer edge of each insertion hole 16 on the inner surface of the front case 6, and the button body 11 is closed on the opposite surfaces of the support wall 18. Corresponding to the position of the protrusions 13 (in the state shown in FIGS. 1, 3 and 4), the support surface portions 19 facing each other at a wider distance than the distance between the both protrusions 13.
Are provided in an inclined shape that spreads upward, and are continuous with the lower end of the support surface portion 19 and correspond to the position of the protrusion 13 in the open state of the button body 11 (the state shown in FIG. 6). Holding surface portions (20) facing each other are provided at intervals narrower than the intervals of the protrusions (13).

Further, an insertion hole 21 through which the locking claw 14 is inserted is provided at the center of the lower end of the recess 15, and a claw part 22a with which the claw part 14a of the locking claw 14 is engaged with the lower edge of the insertion hole 21. Engaging claw
22 is integrally projectingly provided, and a releasing portion 23 for disengaging the claw portion 22a from the claw portion 14a to release the engagement is integrally projectingly provided at the tip of the engaging claw 22.

Then, the button body 11 is biased forward by the elasticity of the transmission body 26, which will be described later, so that the locking claw 14 engages with the engaging claw 22, and the upper end side is used as a fulcrum to support the lower end. The side can be pushed. At this time, the protrusions 13 of the support pieces 12 of the button body 11 are located at the positions of the support surface portions 19 of the support wall portions 18 that are opposed to each other at a distance wider than the distance between the protrusions 13, and the button body 11 is rotated. There are no obstacles to it.

Further, an opening 24 is provided at the center of the concave portion 15, and a transmission body for transmitting the pushing operation force of the button body 11 to the switch 25 arranged in the case 2 in the opening 24. 26 are provided integrally. The transmission body 26 is provided with a swinging piece 28 having a substantially U shape from the upper edge portion of the opening 24 via a curved portion 27.
An abutting piece 29 that abuts the inner surface of the button body 11 is provided on the outer surface of the lower end of the rocking piece 28, and a substantial L that projects inward upward from the inner surface slightly closer to the upper end than the lower end of the rocking piece 28. The pressing piece 30 is provided in a letter shape. The curved portion 27 is a fulcrum located in the vicinity of the rotation fulcrum of the button body 11, and the contact piece 29.
Is a force point that receives the pushing operation force of the button body 11, and the pressing piece 30 is an action point that transmits the pushing operation force to the switch 25.

The switch 25 is mounted on a substrate 31 facing the pressing piece 30 and screwed to the inner surface of the front case 6. Another electric component 32 is also mounted on the board 31, and an electric circuit section 33 is configured.

The microphone device 4 has a microphone body 41 having a cylindrical shape and provided with a sound collecting portion on the front surface. The microphone body 41 is housed in a microphone housing 42 and is mounted inside the front case 6. ing. The microphone housing 42 is made of rubber and has a circular recess 43 on the front surface thereof, and a through hole 44 facing the front surface of the microphone body 41 is provided inside the recess 43.

The front case 6 is provided with a vertically elongated slit-like opening 45 communicating with the front surface of the case, and is located around the inner surface of the opening 45 and accommodates the microphone housing 42.
A cylindrical holding frame 46 into which is inserted and fixed is projectingly provided, and an annular projecting portion 47 that fits into the recess 43 of the microphone housing 42 projects around the opening 45 inside the holding frame 46. It is set up.

Further, when the microphone housing 42 is inserted into the holding frame 46, the waterproof film 48 is interposed.

The speaker device 5 includes a speaker body 51. Further, the front case 6 is provided with a plurality of vertically extending openings 52 in the shape of a horizontally elongated slit that communicates with the front surface of the case. The front end of the speaker body 51 is located around the inner surface of the opening 52. An annular holding frame 53 that fits around the periphery
Is projected. When fitting the speaker body 51 into the holding frame 53, a waterproof film (not shown) is interposed.

Inside the front case 6, a plurality of ribs 61 are provided so as to abut the inner surface of the back cover 7 inside the peripheral wall portion.
A pair of hooking claws 62 are provided at a position rearward of the rib 61 inside the upper wall portion, and a boss 64 having mounting holes 63 on both sides of the lower wall portion is provided with the rib 61.
A boss 66 protruding from the same height as that of the boss 66 having an insertion hole 65 as an insertion portion is provided on the side of the insertion hole 21. It should be noted that the insertion hole 65 is opened to communicate with the inside of the recess 15, and the large-diameter portion is formed at the opening end.
67 is provided.

The back cover 7 has a front case 6 on the periphery.
A mounting plate portion 68 is provided which is fitted inside the back surface of the and contacts the rib 61 and the boss 64. At the upper end of this mounting plate 68,
A recess 69 that fits with each hooking claw 62 is provided, and a hooking portion 69a that fits in the front surface of the inside half of each hooking claw 62 is provided in approximately the inner half of this recess 69, respectively. A cutout 70 is provided in the half corresponding to the outer half of each hooking claw 62. Through holes 71 are provided on both sides of the lower end of the mounting plate portion 68.

Then, the hooking claws 62 of the front case 6 are fitted into the recesses 69 at the upper end of the back cover 7, and the hooking parts 69a are hooked on the hooking claws 62.
Of the rear cover 7 is fitted to the inner side of the front case 6 and brought into contact with the rib 61 or the boss 64, and a screw (not shown) is inserted into each through hole 71 from the outer side of the back cover 7. The front case 6 and the back cover 7 are joined and fixed by being inserted and screwed into the mounting holes 63 of the boss 64.

Further, the back cover 7 has a mounting plate portion 68 at a substantially central region of the mounting plate portion 68, corresponding to a storage position of the electric circuit portion 33.
A projecting portion 72 that projects more outward than 68 is provided.
Corresponding to the position of the releasing portion 23, a recessed portion 73 recessed on the inner surface side of the mounting plate portion 68 is provided, and the recessed portion 73 is provided with an insertion hole 74 through which the tip of the releasing portion 23 projects. Corresponding to the storage position of the speaker main body 51, a pressing piece 76 for pressing the speaker main body 51 forward through a substantially U-shaped slit 75 is provided. Corresponding to the protruding position of the boss 66, a notch 77 into which the boss 66 is inserted and fitted is provided. Corresponding to each position of a mounting hole 84 of a mounting member 81, which will be described later, recesses 78 and 79 recessed inward from the projecting portion 72 are provided.

Further, a terminal mounting portion is provided on the outer surface of the back cover 7.
80 is provided, and a connection terminal (not shown) connected to the internal electric circuit portion 33 is attached to the terminal attachment portion 80, and is connected to another intercom body at the time of construction by a wiring wire.

Next, the mounting member 81 for mounting the intercom body 1 on the wall surface of the entrance is made of a metal plate, and the front surface is the mounting surface of the intercom body 1 and the back surface is the fixing surface for fixing to the wall surface. It is formed in a shape and dimension that allows it to be fitted to the inner side of the back surface of the front case 6, and flanges 82 that are fitted to the inner sides of both side wall portions of the front case 6 are bent and formed on both sides.

An opening 83 into which the protrusion 72 of the back cover 7 is fitted is provided in the center of the mounting member 81.
Horizontally long mounting holes 84 are provided at the upper and lower edge portions of the.

Further, at the upper edge of the mounting member 81, a pair of substantially L-shaped engaging members which engage with the front surface of the substantially outer half of each hooking claw 62 of the front case 6 through each notch 70 of the back cover 7. The stop claw 85 is provided so as to project from the front side. At the center of the lower edge, a mounting piece 86 is cut and raised on the front side, and this mounting piece 86 has an insertion hole for the boss 66.
A screw hole 87 as a mounting hole is provided coaxially with 65.

Next, the operation of this embodiment will be described.

When the intercom body 1 is mounted on a wall surface of an entrance, for example, first, when the mounting surface of the back surface of the mounting member 81 is embedded in a predetermined position on the wall surface or in advance on the wall surface, etc. The mounting member 81 is fixed to the wall surface or the like by screwing a fixing screw (not shown) to the wall surface or the mounting box through each mounting hole 84 of the mounting member 81 according to the position of the mounting box.

When the intercom body 1 is attached to the attachment member 81, the button body 11 is opened as shown in FIG. To open the button body 11, the release portion 23 protruding into the recess 73 on the back surface of the back cover 7 is pushed downward, and the engaging claw 22 integrated with the release portion 23 is removed from the locking claw 14. The locking of the lower end side of the button body 11 can be released, and the lower end side of the button body 11 can be pivotally opened upward with the upper end side of the button body 11 as a fulcrum.

When the button body 11 is rotated in the opening direction, the projections 13 of the support piece portions 12 of the button body 11 are moved from the positions where they abut the support surface portions 19 of the support wall portions 18 to the support surface portions. It moves to a position where it abuts on the lower holding surface portion 20 of 19. Since both holding surface portions 20 of both supporting wall portions 18 face each other at a distance narrower than the distance between both protruding portions 13, both supporting piece portions 12 are elastically deformed inward so that the protruding portion 13 is held surface portion 20. Pressed against the button body 11 with this pressure contact force.
Is held open.

Further, the wiring electric wire guided to the wall surface or the like or the mounting box is connected to the connection terminal arranged in the terminal mounting portion 80.

Then, the locking claws 85 of the mounting member 81 are hooked on the outer half of the hooking claws 62 of the front case 6 through the cutouts 70 of the back cover 7 of the intercom body 1, and the mounting member 81.
The periphery of the front case 6 is fitted to the periphery of the. In this fitted state, the tip surface of the boss 66 is joined to the mounting piece 86.

The mounting screw 91 is inserted from the front of the recess 15 into the insertion hole 65, and the tip of the mounting screw 91 is screwed into the screw hole 87 of the mounting piece 86.
Tighten by screwing on. The head portion 91a of the mounting screw 91 is housed in the large diameter portion 67.

Then, the button body 11 is rotated in the closing direction,
The engagement claw 14 of the button body 11 is engaged with the engagement claw 22.

In this way, the intercom body 1 is mounted on the wall surface of the entrance or the like, and is electrically connected to a pair of intercom bodies arranged indoors or the like.

Next, when a visitor or the like uses the intercom, by pressing the button body 11 of the intercom body 1, the switch 25 is operated via the transmission body 26 and a call is made. When the pushing operation of the button body 11 is released, the elasticity of the transmission body 26 pushes the locking claw 14 back to the state where the locking claw 14 engages with the engagement claw 22, and the switch 25 is turned off.

Then, when a response is made by the intercom body installed indoors or the like, the response sound is emitted from the speaker main body 51. At the same time, the voice of the visitor emitted toward the intercom body 1 is picked up by the microphone body 41 and transmitted to the indoor intercom body.

Further, although the opening 45 of the microphone device 4 and the opening 52 of the speaker device 5 are opened on the front surface of the front case 6, rainwater and the like are contained inside the case because they have a waterproof structure. Can be prevented from entering.

In the waterproof structure of the microphone device 4, the microphone housing body housing the microphone body 41 is used.
Although the waterproof film 48 is interposed when the 42 is inserted into the holding frame 46, if the microphone housing 42 is inserted to the innermost side of the holding frame 46, the microphone housing 42 is inserted.
Since the annular protrusion 47 enters the recess 43, the waterproof film 48 is pulled substantially uniformly by the protrusion 47 in all circumferential directions. Therefore, the waterproof film 48 can be stretched in a plane, and a desired microphone sensitivity can be secured.

When the button body 11 is opened, the projections 13 of the support piece portions 12 of the button body 11 are pressed against the holding surface portions 20 of the support wall portions 18, respectively. Therefore, the button body 11 can be held in an open state, and the work of screwing the mounting screw 91 or the work of adjusting the volume volume of the speaker body 51 facing the recess 15 can be facilitated. I can do it.

When the button body 11 is pushed, the transmission body 26
The contact piece 29, which is the force point, receives the pushing operation force, and the swing piece 28 swings with the curved portion 27, which is the fulcrum, as the fulcrum, and the switch 25 is pushed by the pressing piece 30, which is the action point. Therefore, the force for pushing the button body 11 is not directly applied to the switch 25,
Even if the pushing operation force is large, the transmission body 26 elastically displaces and absorbs the force, so that it is possible to prevent an unreasonable force from being applied to the switch 25 and prevent the switch 25 from being damaged or damaged.

Further, when the button body 11 is opened, the front case 6 is operated by operating the release portion 23 protruding from the back cover 7.
The engagement between the locking claw 14 of the button body 11 and the engagement claw 22 of the front case 6 can be released without removing the back cover 7.
Moreover, the rear cover 7 is provided with the projecting portion 72 having a size required for storage corresponding to the storage position of the electric circuit portion 33.
Since the concave portion 73 is provided in the portion corresponding to the projecting portion, the releasing portion 23 can be easily operated by inserting a fingertip or the like into the concave portion 73.

Further, since the mounting member 81 is formed of a metal plate so that it can be fitted inside the back surface of the front case 6, when the intercom body 1 is mounted on the mounting member 81, the mounting member 81 is concealed and the appearance is good. In addition, the mounting member 81 itself can be thinned to be thin.

[0053]

According to the first aspect of the present invention, since the mounting member for mounting the device body to the fixed portion is formed of the metal plate material, the thickness of the mounting member can be reduced, and the device body can be attached to the mounting member. Even in the mounted state, the protruding size of the device body from the fixed portion can be made small and thin, and the appearance can be improved.

According to the second aspect of the present invention, since the mounting member for mounting the intercom body on the fixed portion is formed of the metal plate material, the thickness of the mounting member can be reduced and the intercom body is mounted on the mounting member. Even in the state, the protruding dimension of the intercom body from the fixed portion can be made small and thin, and the appearance can be improved.

According to the third aspect of the invention, the recess of the back cover is engaged with the hooking claw of the front case, and the back cover is attached to the front case. Further, the locking claw of the mounting member is passed through the recess of the back cover, and the hook claw of the front case is engaged with the locking claw of the mounting member, so that the case is mounted on the mounting member. Therefore,
The recessed portion of the back cover can be used both for mounting the front case and the back cover and for mounting the case and the mounting member.

[Brief description of drawings]

FIG. 1 is a sectional view showing a combination of mounting members of an intercom body showing an embodiment of the present invention.

FIG. 2 is a rear view of a combination of intercom body mounting members.

FIG. 3 is a front view of an intercom body.

FIG. 4 is a rear view of a front case of an intercom body.

FIG. 5 is a cross-sectional view of an intercom microphone device.

FIG. 6 is a sectional view of a part of an intercom body.

[Explanation of symbols]

 1 Intercom body as a device body 2 Case 3 Switch device 4 Microphone device 5 Speaker device 6 Front case 7 Back cover 33 Electric circuit part 62 Hooking claw 65 Insertion part 81 Mounting member 85 Locking claw 87 Mounting hole 91 Mounting screw

Claims (3)

[Claims] 1. A mounting member fixed to a fixed portion, and a device body mounted to the mounting member, wherein the device body has a case accommodating an electric circuit section,
A hooking claw is provided on the inside of one end of the mounting surface of the case, and a mounting screw insertion portion is provided on the other end side of the case. The mounting member is made of a metal plate, and the one end is engaged with the hooking claw. An electric device, wherein a claw is provided so as to project, and a mounting hole into which the mounting screw is screwed is provided on the other end side. 2. An intercom body provided with an attachment member fixed to a fixed portion and an intercom body attached to the attachment member and provided with a switch device, a microphone device, and a speaker device, and mutual communication between a plurality of intercom bodies. In the interphone that can be performed, the intercom body has a case accommodating an electric circuit part, and a hooking claw is projectingly provided inside one end of a mounting surface of the case, and a mounting screw insertion part is provided at the other end side. The mounting member is made of a metal plate material, and has a locking claw protruding from one end that engages with the hooking claw, and a mounting hole into which the mounting screw is screwed at the other end. And the intercom. 3. The case comprises a front case having a hooking claw projecting from the inside of one end of the back side, and a back cover fitted to the back side of the front case by engaging a recess provided at one end with the hooking claw. The electric device according to claim 1 or the intercom according to claim 2, wherein the hooking claw is engaged with the locking claw of the mounting member through the recess of the back cover.