JP3104719B2 - Electrical equipment and intercom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric apparatus including a push button type switch and an intercom.

[0002]

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

In an outdoor intercom, a switch device for calling is provided in a case, and a microphone device and a speaker device for conversation are provided in the case.

In a switch device, a button body is mounted on the outer surface of the case so as to be able to be pushed with the upper end side as a fulcrum, and the button body is disposed in the case so as to face the inner surface of the button body and is operated by pushing operation of the button body. And a switch.

This button body has a hooking piece projecting from the inner surface of the upper end and a locking claw projecting from the inner surface of the lower end. And
To attach the button body to the case, insert the hook at the upper end from the outer surface of the case and hook it, then rotate the button body toward the case to close it, and attach the lower hook to the case. Lock. Further, when the button body is mounted, the lower end side can be pushed and operated with the hooked portion on the upper end side as a fulcrum.

[0006]

By the way, inside the button body, the switch is provided, and for example, a volume control of a speaker device may be provided.
When adjusting them, it is necessary to open the button body, but if you remove the locking claw from the case to open the button body,
The button body comes off the case completely.

[0007] For this reason, it is troublesome to hold the detached button body while adjusting it or to store it in another place, and the button body may be lost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides an electric apparatus and an intercom which can hold a button body in an open state and can easily perform work with the button body in an open state. It is intended to provide.

[0009]

According to the first aspect of the present invention, there is provided an apparatus main body, a button body which is mounted on an outer surface of the apparatus main body at one end as a fulcrum so as to be openable and closable and pushable in a closed state; A switch disposed on the device body facing the inner surface of the button body and operated by a pressing operation of a button body, and a substantially L-shaped support piece portion is protruded on both sides of the inner surface on one end side of the button body,
A projection is provided on the outer surface of the distal end of each support piece, and an insertion hole through which each support piece of the button body is rotatably inserted is provided in the device main body, and an outer edge inside the insertion hole is provided. The portion has a support surface portion facing the projection position in the closed state of the button body at an interval larger than the interval between the two projection portions, and has a two-sided projection corresponding to the projection position in the open state of the button body. A support wall portion having a holding surface portion facing at a smaller interval than the portion interval is provided.

According to a second aspect of the present invention, there is provided an intercom which includes an intercom body provided with a switch device, a microphone device, and a speaker device in a case so that mutual communication can be performed between a plurality of interphone bodies. A button body that is mounted on the outer surface of the case so as to be openable and closable with one end as a fulcrum, and a switch that is disposed on the case facing the inner surface of the button body and that is operated by a pushing operation of the button body. A substantially L-shaped support piece is provided on both sides of an inner surface on one end side of the button body, and a protrusion is provided on an outer surface at a tip end of each support piece. The button body is provided on the case. Provide an insertion hole through which each support piece is inserted,
The outer peripheral portion inside the insertion hole has a support surface portion facing at a wider interval than both protrusion portions corresponding to the position of the protrusion in the closed state of the button body, and the protrusion in the open state of the button body. A supporting wall portion having a holding surface portion opposed to the projection at a smaller interval than both projection portions is provided.

[0011]

According to the first aspect of the present invention, in the state where the button body is closed to the device main body, the projections of the two support pieces of the button body are opposed to each other at the support surface portions of the two support walls which are opposed to each other at an interval larger than the interval between the projections. And enables the push operation of the button body. Also, when the button body is opened from the device main body, the protrusions of the two support pieces of the button body are pressed against the holding surfaces of the two support walls facing each other at a smaller interval than the distance between the two protrusions, and the button body is opened. Is held.

According to the second aspect of the present invention, in a state where the button body is closed in the case, the projections of the two support pieces of the button body are formed on the support surfaces of the two support walls opposed to each other at an interval wider than the interval between the two projections. Position, enabling the push operation of the button body. Also, when the button body is opened from the case, the protrusions of the two support pieces of the button body are pressed against the holding surfaces of the two support walls facing each other at a smaller interval than the distance between the two protrusions, and the button body is opened. Will be retained.

[0013]

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

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

The case 2 includes a front case 6 formed of a synthetic resin in a frame shape having an open back surface, and a back cover formed of a synthetic resin fitted inside the back surface of the front case 6 in a fitted state. 7 is comprised.

The switch device 3 has a button body 11 disposed on the front surface of the front case 6. The button body 11 is formed in a substantially square shape having a relatively large area as compared with the area of the front case 6. A protruding portion 13 protrudes from the outer surface of the distal end of the piece portion 12, and a locking claw 14 having a claw portion 14a protruding from the lower surface of the distal end is protruded at the center of the inner surface of the lower end.

The front case 6 is provided with a recess 15 in which the button body 11 is fitted and arranged. On both sides of the upper end of the recess 15, there are provided insertion holes 16 through which the support pieces 12 are inserted. . The distance between the outer edges of the two insertion holes 16 is substantially the same as the distance between the two support pieces 12, and each projection 13 is inserted into each of the insertion holes 16 from the front with each support piece 12 elastically deformed. By doing so, the projection 13 is engaged with the edge 17 of the insertion hole 16 to prevent it from falling off. Therefore, the button body 11 is attached to the front case 6 so 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 at an outer edge of each of the insertion holes 16 on the inner surface of the front case 6 to protrude therefrom. In the state shown in FIGS. 1, 2 and 4, the supporting surface portion 19 facing the projection 13 at a wider interval than the interval between the projections 13 corresponding to the position of the projection 13.
Are provided in an inclined shape that expands upward, and are continuous with the lower end of the support surface portion 19, and correspond to the positions of the protrusions 13 in the open state of the button body 11 (the state shown in FIG. 3). The holding surface portions 20 facing each other at an interval smaller than the interval between the protrusions 13 are provided.

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

The button body 11 is urged forward by the elasticity of a transmission body 26 to be described later so that the locking claw 14 is engaged with the engaging claw 22, and the lower end is pivoted about the upper end side. The side can be pushed. At this time, the protrusions 13 of the two support pieces 12 of the button body 11 are located at the positions of the support surfaces 19 of the two support wall parts 18 facing each other at a wider interval than the distance between the two protrusions 13, and the rotation of the button body 11 So that there is no problem.

An opening 24 is provided at the center of the concave portion 15, and a transmitting body for transmitting the pushing operation force of the button body 11 to the switch 25 disposed in the case 2 is provided in the opening 24. 26 are provided integrally. This transmission body 26 is provided with a substantially U-shaped rocking piece 28 from the upper edge of the opening 24 via a curved portion 27,
An abutment piece 29 is provided on the outer surface of the lower end of the rocking piece 28 to be in contact with the inner surface of the button body 11, and substantially L projecting inward and upward from the inner surface slightly closer to the upper end than the lower end of the rocking piece 28. A 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 point of force that receives the pushing operation force of the button body 11, and the pressing piece 30 is the point of action that transmits the pushing operation force to the switch 25.

The switch 25 is mounted on a substrate 31 which is screwed to the inner surface of the front case 6 so as to face the pressing piece 30. Other electric components 32 are also mounted on the board 31, and an electric circuit unit 33 is configured.

The microphone device 4 has a microphone body 41 having a cylindrical shape and a sound-collecting part provided 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, has a circular concave portion 43 on the front surface, and a through hole 44 facing the front surface of the microphone main body 41 inside the concave portion 43.

The front case 6 is provided with a vertically long slit-like opening 45 communicating with the front surface of the case. The microphone housing 42 is located around the inner surface of the opening 45.
A cylindrical holding frame 46 into which is inserted and fixed is projected, and an annular projection 47 fitted into the concave portion 43 of the microphone housing 42 projects around the opening 45 inside the holding frame 46. Has been established.

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

The speaker device 5 has a speaker main body 51. The front case 6 is provided with a plurality of vertically extending openings 52 in the form of a horizontally elongated slit which 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 the periphery
Are protruding. When the speaker main body 51 is fitted into the holding frame 53, a waterproof film (not shown) is interposed.

A plurality of ribs 61 projecting from the inside of the front case 6 to the inner surface of the back cover 7 on the inner side of the peripheral wall portion,
A pair of hooking claws 62 protrude at a position rearward of the rib 61 inside the upper wall, and a boss 64 having a mounting hole 63 on both sides of the lower wall is provided with a rib 61.
And a boss 66 having an insertion hole 65 is provided on the side of the insertion hole 21. In addition, the insertion hole 65 is
The large diameter portion 67 is provided at the opening end.

The back cover 7 has a front case 6 around its periphery.
A mounting plate portion 68 is provided which is fitted to the inside of the back surface and abuts on the rib 61 and the boss 64. At the upper end of this mounting plate 68,
A concave portion 69 that fits with each hooking claw 62 is provided. A hooking portion 69a that fits on the front surface of approximately half of the inside of each hooking claw 62 is provided on substantially the inside of the concave portion 69, and the outside of the concave portion 69 is provided. A cutout 70 is provided in the half corresponding to substantially the outside of each hook 62. On both sides of the lower end of the mounting plate 68, through holes 71 are provided.

Then, the hooks 62 of the front case 6 are fitted into the respective recesses 69 at the upper end of the back cover 7, and the hooks 69a are hooked up.
The rear cover 7 is fitted to the inside of the front case 6 and is brought into contact with the ribs 61 and the bosses 64. By inserting and screwing into the mounting hole 63 of the boss 64, the front case 6 and the back cover 7 are connected and fixed.

The back cover 7 has a mounting plate portion substantially at the center of the mounting plate portion 68 corresponding to the storage position of the electric circuit portion 33.
A protruding portion 72 protruding from the outer surface side beyond 68 is provided.
Corresponding to the position of the release portion 23, a concave portion 73 that is recessed on the inner surface side from the mounting plate portion 68 is provided, and an insertion hole 74 from which the tip of the release portion 23 projects is provided in the concave portion 73. A pressing piece 76 that presses the speaker main body 51 forward through a substantially U-shaped slit 75 is provided corresponding to the storage position of the speaker main body 51. A notch 77 into which the boss 66 is inserted and fitted is provided corresponding to the projecting position of the boss 66. Recesses 78 and 79 are provided corresponding to each position of a mounting hole 84 of a mounting member 81 to be described later.

Further, a terminal mounting portion is provided on the outer surface of the back cover 7.
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 interphone body by a wiring wire at the time of construction.

Next, an attachment member 81 for attaching the intercom body 1 to a wall surface of the entrance is made of a metal plate, and the front surface is used as a mounting surface for the intercom body 1 and the back surface is used as a fixed surface for fixing the wall surface or the like. Flanges 82 are formed on both sides of the front case 6 so as to be fitted into the inside of the rear surface of the front case 6, and flange portions 82 are fitted on both sides of the front case 6.

At the center of the mounting member 81, there is provided an opening 83 into which the projection 72 of the back cover 7 is fitted.
At the top and bottom edges, horizontally long mounting holes 84 are provided, respectively.

Further, a pair of substantially L-shaped engaging members are provided at the upper edge of the mounting member 81 so as to be engaged with substantially half of the front surface of each of the hooks 62 of the front case 6 through the respective notches 70 of the back cover 7. A stop claw 85 is projected from the front side. At the center of the lower edge, a mounting piece 86 is cut and raised toward the front side, and the mounting piece 86 has an insertion hole for the boss 66.
A screw hole 87 is provided coaxially with 65.

Next, the operation of this embodiment will be described.

When mounting the intercom body 1 on, for example, a wall surface of an entrance, first, the fixing surface on the back surface of the mounting member 81 is fixed to a predetermined position such as a wall surface or a mounting box is buried in a wall surface or the like in advance. 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 like or the mounting box through each mounting hole 84 of the mounting member 81 in accordance with the position of the mounting box.

In mounting the intercom body 1 to the mounting member 81, the button body 11 is opened as shown in FIG. To open the button body 11, the release portion 23 protruding from the concave portion 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 released from the locking claw 14. The lock on the lower end of the button body 11 is released, and the lower end of the button body 11 can be rotated upward with the upper end side as a fulcrum to open.

When the button body 11 is rotated in the opening direction, the protrusions 13 of the two support pieces 12 of the button body 11 are moved from the position where they come into contact with the support surface 19 of the two support walls 18 to the support surface part. Move to a position where it comes into contact with the lower holding surface portion 20 of 19. Since the two holding surfaces 20 of the two supporting walls 18 are opposed at a smaller interval than the interval of the two projections 13, the two supporting pieces 12 are elastically deformed inward to face each other, and the projection 13 is To the button body 11 by this pressing force.
Is kept open.

Further, a wiring wire led into a wall surface or the like or inside the mounting box is connected to a connection terminal provided in the terminal mounting portion 80.

The outer half of each hook 62 of the front case 6 is hooked on each locking hook 85 of the mounting member 81 through each cutout 70 of the back cover 7 of the intercom body 1, and the mounting member 81
Is fitted around the front case 6. In this fitted state, the tip surface of the boss 66 is joined to the mounting piece 86.

A mounting screw 91 is inserted into the insertion hole 65 from the front of the recess 15, and the tip of the screw portion of the mounting screw 91 is screwed into the screw hole 87 of the mounting piece 86.
And tighten it. The head 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 engaging claw 14 of the button body 11 is engaged with the engaging claw 22.

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

Next, when a visitor or the like uses the intercom, the button 25 of the intercom 1 is pushed and operated, so that the switch 25 is operated via the transmitting body 26 to make a call. When the pressing operation of the button body 11 is released, the elasticity of the transmission body 26 causes the locking claw 14 to be pushed back forward until it engages with the engaging claw 22, and the switch 25 is turned off.

When a response is made with an intercom body installed indoors or the like, a response sound is emitted from the speaker body 51. In addition, the voice of the visitor uttered toward the intercom body 1 is picked up by the microphone main body 41 and transmitted to the indoor intercom body.

An opening 45 of the microphone device 4 and an opening 52 of the speaker device 5 are opened on the front surface of the front case 6, respectively. Can be prevented from invading.

In the waterproof structure of the microphone device 4, the microphone housing housing the microphone body 41 is provided.
When inserting the microphone 42 into the holding frame 46, the waterproof film 48 is interposed. However, if the microphone housing 42 is inserted to the deepest side of the holding frame 46, the microphone housing 42
Since the annular projection 47 enters the recess 43, the waterproof film 48 is pulled substantially uniformly in all directions around the projection 47 by the projection 47. Therefore, the waterproof film 48 can be stretched two-dimensionally, and desired microphone sensitivity can be secured.

When the button body 11 is opened, the projections 13 of the two support pieces 12 of the button body 11 are pressed against the holding surfaces 20 of the two support walls 18 respectively. Therefore, the button body 11 can be held in an open state, and the screwing work of the mounting screw 91 and the adjusting work when the volume control or the like of the speaker main body 51 is disposed, for example, facing the recess 15 can be easily performed. I can do it.

When the button body 11 is pushed, the transmitting body 26 is pressed.
When the pressing operation force is received by the contact piece 29 which is the point of force, the rocking piece 28 swings around the curved portion 27 which is the fulcrum, and the switch 25 is pressed 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 is elastically displaced and absorbed, so that an unreasonable force can be prevented from being applied to the switch 25.

When the button body 11 is opened, the release case 23 protruding from the back cover 7 is operated so that the front case 6 can be opened.
The engagement between the engaging claw 14 of the button body 11 and the engaging claw 22 of the front case 6 can be released without removing the back cover 7 from the back.
In addition, the back cover 7 is provided with a protrusion 72 having a size necessary for storage corresponding to the storage position of the electric circuit portion 33, but the release portion 23 is provided.
Since the concave portion 73 is provided in a portion corresponding to the projecting portion of the, the release portion 23 can be easily operated by inserting a fingertip or the like into the concave portion 73.

The mounting member 81 is made of a metal plate.
The mounting member 81 is concealed when the intercom body 1 is mounted on the mounting member 81 so that the appearance can be improved, and the thickness of the mounting member 81 itself can be reduced. Can be

[0052]

According to the first aspect of the present invention, in the state where the button body is closed to the apparatus main body, the projections of the two support pieces of the button body are opposed to each other at a wider interval than the interval between the projections. It is located on the support surface of the section, and allows the push operation of the button body. In addition, when the button body is opened from the device body, the protrusions of the two support pieces of the button body are pressed against the holding surfaces of the two support walls facing each other at a smaller interval than the two protrusion parts, and the button body is opened. , And the operation with the button body opened can be easily performed.

According to the second aspect of the present invention, in the state where the button body is closed in the case, the projections of the two support pieces of the button body are supported by the two support wall portions facing each other at a wider interval than the interval between the two projections. It is located on the surface and enables the push operation of the button body. Also, when the button body is opened from the case, the protrusions of the two support pieces of the button body are pressed against the holding surfaces of the two support walls facing each other at a smaller interval than the distance between the two protrusions,
The button body can be held in the open state, and the operation with the button body opened can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view of an intercom body showing one embodiment of the present invention.

FIG. 2 is a sectional view of an intercom body.

FIG. 3 is a partial cross-sectional view showing a state where a button body of the intercom body is opened.

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

FIG. 5 is a rear view in which a mounting member of the intercom body is combined.

FIG. 6 is a sectional view of a microphone device of an intercom body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intercom body 2 Case as apparatus main body 3 Switching device 4 Microphone device 5 Speaker device 11 Button body 12 Support piece 13 Projection 16 Insertion hole 18 Support wall 19 Support surface 20 Holding surface 25 Switch

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/02-1/23 H05K 5/00-5/06

Claims (2)

(57) [Claims] An apparatus main body, a button body attached to an outer surface of the apparatus main body so as to be openable and closable with one end serving as a fulcrum, and a button body mounted on the apparatus main body facing the inner surface of the button body. A switch that is operated by a pushing operation of a button body, and a substantially L-shaped support piece is provided on both sides of an inner surface on one end side of the button body, and a protrusion is provided on an outer surface at the tip end of each support piece. The device main body is provided with an insertion hole through which each support piece of the button body is rotatably inserted, and an outer peripheral portion inside the insertion hole is provided with:
In addition to having a support surface portion facing at a wider interval than both protrusion portions corresponding to the protrusion position in the closed state of the button body, and having a support surface portion corresponding to the protrusion position in the open state of the button body, An electric device comprising a support wall having a holding surface facing at a narrow interval. 2. An intercom body provided with a switch device, a microphone device, and a speaker device in a case,
In an intercom capable of performing intercommunication among a plurality of intercom bodies, the switch device includes a button body attached to an outer surface of a case so as to be openable and closable with one end as a fulcrum, and to be capable of being pushed in a closed state. A switch disposed on the case facing the inner surface of the button body and operated by a pushing operation of the button body, and a substantially L-shaped support piece portion is protrudingly provided on both sides of the inner surface on one end side of the button body. A protrusion is provided on the outer surface of the distal end of the support piece, and an insertion hole through which each support piece of the button body is inserted is provided in the case, and the button body is closed at an outer edge inside the insertion hole. It has a support surface that faces at a wider interval than both protrusions corresponding to the position of the protrusion in the state, and faces at a distance smaller than the distance between both protrusions corresponding to the position of the protrusion in the open state of the button body. A supporting wall portion having a holding surface portion to be provided. Intercom that.