JP2021111830A - Intercom device - Google Patents

Abstract

To provide an intercom device that prevents a button from falling into a main body case when a part of the button is damaged even when the button and a board do not overlap each other in the front and back due to the miniaturization of the board.SOLUTION: In an intercom master unit, a notification button 8 includes: an operating member 11 having an operating unit; a holding member 12 fixed to the rear surface of a front case 2 and holding the operating member 11 inside the main body case; and an elastic member 13 interposed between the operating member 11 and the holding member 12. The holding member 12 is formed into a rectangular plate that is long in the left-right direction, and the outer end is screwed to the rear surface of the front case 2 in the left-right direction, and the inner end is sandwiched from the front and back between and fixed by the rear surface of the front case 2 in the left-right direction and the board 3 arranged behind the member 12.SELECTED DRAWING: Figure 4

Description

The present invention relates to an intercom device having a button to be operated by pushing, for example, an intercom master unit.

Conventionally, for example, an intercom device such as an intercom master unit is provided with a button on the front surface of the main body case that can be pushed and operated by a user. In such an intercom device, a board on which a switch operated by the button is mounted is installed at a position behind the button in the main body case.

JP-A-2010-80566

In recent years, intercom devices have been made smaller and thinner, and smaller boards will be adopted. As a result, in the past, the substrate was present so as to cover almost the entire back of the button, but there are some that do not substantially overlap the button and the substrate in the front-rear direction. Then, when the button and the board do not substantially overlap each other in the front-rear direction, the conventional case where a button having a partially damaged part (such as a holding portion for holding the button against the main body case) is pushed in is operated. Then, when the substrate becomes a wall and the button is suppressed from falling into the main body case, the board cannot serve as a wall and the button falls into the main body case.

Therefore, the present invention has been made in view of the above problems, and even if the button and the substrate are not substantially overlapped in the front-rear direction due to the miniaturization of the substrate, when a part of the button is damaged, the button is formed. The purpose is to provide an intercom device that does not easily fall into the main body case.

In order to achieve the above object, in the present invention, a button window is provided on the front surface of the main body case, and a button having an operation unit to be pushed and operated by the user makes the operation unit of the main body case through the button window. An intercom device built into the main body case in a state of being projected forward, and a button is an operation member having an operation unit, and a holding member fixed in the main body case to hold the operation member in the main body case. It is provided with an elastic member interposed between the operating member and the holding member, and the holding member is formed into a long plate shape in a predetermined direction, and one end in the longitudinal direction is screwed to the inner surface of the main body case. The other end is sandwiched and fixed from the front and back by the inner surface of the main body case and the substrate arranged behind the holding member.

According to the present invention, a button is fixed in an operating member having an operating portion, a holding member for holding the operating member in the main body case, and elasticity interposed between the operating member and the holding member. It is equipped with a member. That is, instead of directly holding the operating member having the operating portion on the main body case, the operating member is divided into two members, the operating member and the holding member, and the operating member is held via the holding member, which has been damaged in the past. The part is hard to break in the first place.
Further, the holding member is formed into a long plate shape in a predetermined direction, one end in the longitudinal direction is screwed to the inner surface of the main body case, and the other end is formed by the inner surface of the main body case and the substrate arranged behind the holding member. Since it is sandwiched and fixed from the front and back, if the board is located behind even the other end side of the button, even if the board does not function as a wall when the button is damaged as in the past, the button It is possible to effectively suppress the drop into the main body case. In addition, it is possible to simplify the configuration related to fixing the holding member, and it is possible to reduce the size and thickness of the intercom device.

It is explanatory drawing which showed the intercom master unit from the front side. It is explanatory drawing which showed the intercom master unit with the rear case removed from the rear side. It is explanatory drawing which showed the intercom master unit with the board removed from the rear side. It is a perspective explanatory view which showed the intercom master unit in the disassembled state from the front side. It is a perspective explanatory view which showed the intercom master unit in the disassembled state from the rear side. It is a perspective explanatory view which showed the notification button in the disassembled state, (a) is shown from the front side, (b) is shown from the rear side, respectively. It is explanatory drawing which showed the horizontal cross section of the notification button part in the intercom master unit from the bottom.

Hereinafter, the intercom master unit according to the embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory view showing the intercom master unit 1 from the front side. FIG. 2 is an explanatory view showing the intercom master unit 1 in a state where the rear case 9 is removed from the rear surface side. FIG. 3 is an explanatory view showing the intercom master unit 1 in a state where the substrate 3 is removed from the rear surface side. FIG. 4 is a perspective explanatory view showing the intercom master unit 1 in the disassembled state from the front side. FIG. 5 is a perspective explanatory view showing the intercom master unit 1 in the disassembled state from the rear surface side. 6A and 6B are perspective explanatory views showing the notification button 8 in the disassembled state, in which FIG. 6A is shown from the front side and FIG. 6B is shown from the rear side. FIG. 7 is an explanatory view showing a horizontal cross section of the notification button 8 portion of the intercom master unit 1 from below.

The intercom master unit 1 has a main body case in which a front case 2 arranged on the front side and a rear case 9 arranged on the rear side are assembled, and an intercom slave unit (shown) is on the front surface of the main body case. A display unit 4 for displaying an image or the like captured by the intercom slave unit and a communication unit 5 for making a call with the intercom slave unit are provided. Further, on the front surface of the main body case, there are a response button 6 for answering a call from the intercom slave unit, setting buttons 7 and 7 used for setting the intercom master unit 1, and a notification button 8 used for fire alarm. , 8 etc. are provided with various buttons that can be pushed and operated by the user.

Here, the notification button 8 which is a main part of the present invention and the mounting structure of the notification button 8 will be described in detail.
The notification button 8 is provided below the display unit 4 on the front surface of the main body case, and is an operating member 11 that is directly operated by the user, a holding member 12 that holds the operating member 11, and the operating member 11 and the holding member 12. It is provided with an elastic member 13 installed between and.

The operation member 11 includes an operation unit 21 that bulges forward, a play insertion unit 22 that extends laterally from the operation unit 21, and a cover that is adjacent to the side opposite to the play insertion unit 22 in the operation unit 21. It is a member made of synthetic resin having an engaging portion 23. The operation unit 21 is formed in a rectangular shape having a long front view in the left-right direction, and the front surface is an operation surface that is pushed in by the user. Further, on the rear surface of the operation unit 21, on one end in the left-right direction (one end in the longitudinal direction), an operation protrusion for turning on / off the switch 50 mounted on the substrate 3 24 is projected backward. Further, a contact rib 25 that comes into contact with the front surface of the elastic member 13 when the notification button 8 is assembled is projected rearward at a portion substantially centered on the rear surface of the operation unit 21.

The free insertion portion 22 extends laterally from the end portion on the side opposite to the end portion of the operation portion 21 on which the operation protrusion 24 is provided in the left-right direction. A free insertion hole that penetrates the play insertion portion 22 in the front-rear direction and allows a fixing screw 40 for screwing the notification button 8 (particularly the holding member 12) to the rear surface of the front case 2 to be loosely inserted. Is provided. The engaged portion 23 is a tongue-shaped portion extending rearward from the end portion of the operating portion 21 on the side where the operating protrusion 24 is provided, and the inner surface thereof (the surface on the operating portion 21 side) has a surface. An engaging recess 26 is provided to which the engaging projection 30 of the holding member 12 can be engaged.

The holding member 12 is an elastic synthetic resin member formed in a rectangular plate shape that is long in the left-right direction like the operating member 11, and is provided with accommodating walls 27 that stand forward along the upper and lower sides, respectively. The operating member 11 can be accommodated between the upper and lower accommodating walls 27 and 27. Further, on the front surface of the holding member 12, an installation portion 28 on which the elastic member 13 can be installed is provided at a position facing the contact rib 25 when the operating member 11 is accommodated. Further, an operation window 29 through which the operation protrusion 24 can be inserted is formed at one end of the holding member 12 in the left-right direction, and when the operation member 11 is accommodated, it engages with the engagement recess 26. Possible engaging projections 30 project further laterally beyond the upper and lower accommodation walls 27, 27. In addition, a fixing portion 31 having a screw hole for screwing the holding member 12 to the rear surface of the front case 2 is provided at the other end of the holding member 12 in the left-right direction.

On the other hand, the front case 2 is provided with button windows 41 and 41 having substantially the same shape as the operation unit 21 of the operation member 11. Further, a fixing boss 42 for screwing the notification button 8 is projected rearward at a position outside of each button window 41 in the left-right direction by screwing a fixing screw 40.

Then, to explain the attachment of the notification button 8 having the above-described configuration to the main body case, first, the front case so that the operation unit 21 of the operation member 11 projects to the front of the front case 2 through the button window 41. The operation member 11 is arranged on the rear surface side of 2. In this arrangement, both the left and right operating members 11 are arranged so that the engaged portion 23 side is located inside in the left-right direction and the free insertion portion 22 side is located outside in the left-right direction. Next, after the elastic member 13 is installed in the installation portion 28 of the holding member 12, the accommodating wall 27, while engaging the engaging protrusion 30 with the engaging recess 26 and positioning the operating protrusion 24 in the operation window 29, The operating member 11 is accommodated between 27, and the holding member 12 is assembled from the rear side of the operating member 11. Finally, if the fixing portion 31 of the holding member 12 is screwed to the fixing boss 42 of the front case 2 with the fixing screw 40, the attachment of the notification button 8 is completed. Although the end portion of each notification button 8 on the engaged portion 23 side is not screwed or the like, by installing the substrate 3 behind the notification buttons 8 and 8, the end portion on the engaged portion 23 side is provided. Also, the inner surface of the front case 2 and the front surface of the substrate 3 are fixed so as to be sandwiched from the front and back (FIG. 7).

In each of the notification buttons 8 attached as described above, when the operation unit 21 is pushed in, the elastic member 13 is deformed and the operation member 11 moves rearward, and the switch 50 is operated by the operation protrusion 24. .. On the other hand, when the load on the operating portion 21 in the pushing direction is released, the operating member 11 returns to the position before the pushing operation due to the elastic force of the elastic member 13.

Further, behind the notification buttons 8 and 8 attached as described above, the substrate 3 that controls the main operation of the intercom master unit 1 (for example, a call operation with the intercom slave unit, a video transmission / reception operation, etc.). However, the substrate 3 is molded as small as possible in order to reduce the thickness of the intercom master unit 1. In the substrate 3 according to the present embodiment, the portion behind the notification buttons 8 and 8 is largely cut out, and the substrate 3 is located only about the inner half in the left-right direction of each notification button 8. Therefore, if the structure is such that the operation portion of the notification button 8 is directly held by the main body case as in the conventional case, the substrate 3 is not located behind when the holding portion is damaged or the like. The notification button 8 will fall into the main body case. However, in the structure according to the present embodiment, a configuration is adopted in which the operation member 11 is held by the holding member 12 in relation to the holding of the notification button 8 in the main body case, and the operation member 11 is directly held by the main body case. Since the holding portion (fixed portion 31 or the like) is not easily damaged in the first place. Moreover, even if the holding portion is damaged, the operating member 11 is supported by the holding member 12 whose inner end portion is sandwiched from the front and back by the inner surface of the front case 2 and the front surface of the substrate 3 in the left-right direction. , The drop of the notification button 8 into the main body case can also be suppressed.

According to the intercom master unit 1 having the above configuration, the notification button 8 is fixed to the operation member 11 having the operation unit 21 and the rear surface of the front case 2, and holds the operation member 11 in the main body case. A member 12 and an elastic member 13 interposed between the operating member 11 and the holding member 12 are provided. That is, the operating member 11 is not directly held by the main body case as in the conventional case, but is divided into two members, the operating member 11 and the holding member 12, and is held via the holding member 12. In the first place, the holding portion of the notification button 8 is hard to be damaged.

Further, the holding member 12 is formed into a rectangular plate shape that is long in the left-right direction, and the outer end portion is screwed to the rear surface of the front case 2 in the left-right direction, and the inner end portion is screwed to the rear surface of the front case 2 in the left-right direction. Since it is sandwiched and fixed from the front and back by the rear surface and the substrate 3 arranged behind the holding member 12, if the substrate 3 is located even behind the inner end portion in the left-right direction of the notification button 8. Even in a situation where the substrate 3 does not function as a wall when the button is damaged as in the conventional case, it is possible to effectively suppress the notification button 8 from falling into the main body case. In addition, the configuration for fixing the holding member 12 can be simplified, and the intercom master unit 1 can be made smaller and thinner.

In the intercom device according to the present invention, not only the overall configuration of the intercom device but also the configuration related to the buttons and the like can be appropriately changed as necessary without departing from the spirit of the present invention.

For example, in the above embodiment, the present invention is adopted for the notification button, but it goes without saying that other buttons such as the response button can also be suitably adopted.
Further, in the above-described embodiment, the button that is long in the left-right direction is described, but it is also possible to mold the button as a button that is long in the vertical direction or the inclined direction.
Further, the design can be appropriately changed as to which side end of the button is screwed in the longitudinal direction. In the above embodiment, the inner end is screwed in the left-right direction and the outer end is screwed. It is possible to configure the parts so as to be sandwiched from the front and back.
In addition, although the intercom master unit is described in the above embodiment, the present invention preferably employs other intercom devices such as an intercom slave unit and a collective entrance unit as long as it has a button for pushing operation. be able to.

1 ... Intercom master unit, 2 ... Front case (main body case), 3 ... Board, 8 ... Notification button (button), 11 ... Operation member, 12 ... Holding member, 13 ... Elastic member, 21・ ・ Operation part, 31 ・ ・ Fixed part, 40 ・ ・ Fixing screw, 42 ・ ・ Fixed boss.

Claims (1)

A button window is opened on the front of the main body case, and
A button having an operation unit that the user pushes in is an intercom device built in the main body case with the operation unit protruding forward of the main body case through the button window.
The button
An operating member having the operating unit and
A holding member fixed in the main body case and holding the operation member in the main body case,
It is provided with an elastic member interposed between the operating member and the holding member, and is provided with an elastic member.
A substrate in which the holding member is formed into a long plate shape in a predetermined direction, one end in the longitudinal direction is screwed to the inner surface of the main body case, and the other end is arranged on the inner surface of the main body case and behind the holding member. An intercom device that is characterized by being pinched and fixed from the front and back.

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