JP7419074B2 - intercom equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an intercom device, such as an intercom base unit, having a push-operated button.

BACKGROUND ART Conventionally, an intercom device such as an intercom base unit is provided with a button on the front surface of a main body case that can be pressed and operated by a user. In such an intercom device, a board equipped with a switch that is turned on and off by the button is installed at a position behind the button inside the main body case.

Japanese Patent Application Publication No. 2010-80566

In recent years, intercom devices have become smaller and thinner, and smaller substrates are also being adopted. As a result, whereas in the past there was a board that covered almost the entire rear of the button, there are now products in which the button and the board do not overlap from the front to the back. If the button and the board do not overlap from front to back like this, if a button is pushed in and a part (such as the holding part that holds the button against the main body case) is damaged, In this case, the board acts as a wall and prevents the button from falling into the main body case, but the board cannot function as a wall and the button falls into the main body case.

Therefore, the present invention was made in view of the above-mentioned problem, and with the miniaturization of circuit boards, even if the button and the circuit board do not substantially overlap from front to back, when a part of the button is damaged, the button can be damaged. The aim is to provide an intercom device that does not easily fall into the main body case.

In order to achieve the above object, the present invention has a button window provided on the front surface of the main body case, and a button having an operation section that is pressed and operated by the user, allows the operation section to be opened on the front side of the main body case through the button window. An intercom device built into a main body case in a state of protruding forward, the button comprising: an operating member having an operating portion; a holding member fixed within the main body case and holding the operating member within the main body case; It includes an elastic member interposed between the operating member and the holding member, and the holding member is formed into a plate shape that is elongated 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 fixed by being sandwiched from the front and rear between the inner surface of the main body case and a board disposed behind the holding member.

According to the present invention, the button includes an operating member having an operating portion, a holding member fixed within the main body case and holding the operating member within the main body case, and an elastic member interposed between the operating member and the holding member. It is equipped with a member. In other words, the operating member with the operating section is not held directly in the main body case, but is separated into two parts, the operating member and the holding member, and is held through the holding member, which has caused breakage in the past. The parts are difficult to damage.
In addition, the holding member is formed into a plate shape that is long in a predetermined direction, and one end in the longitudinal direction is screwed to the inner surface of the main body case, and the other end is connected to the inner surface of the main body case and a board arranged behind the holding member. Because the button is clamped and fixed from the front and back, as long as the board is located at the rear of the other end of the button, the button can be secured even if the board does not function as a wall when the button is damaged. Falling into the main body case can be effectively suppressed. In addition, the configuration related to fixing the holding member can be simplified, and the intercom device can be made smaller and thinner.

It is an explanatory view showing an intercom base unit from the front side. FIG. 3 is an explanatory diagram showing the intercom base unit from the rear side with the rear case removed. FIG. 2 is an explanatory diagram showing the intercom base unit from the rear side with the board removed. It is a perspective explanatory view showing the intercom main unit in a disassembled state from the front side. It is a perspective explanatory view showing the intercom base unit in a disassembled state from the rear side. It is a perspective explanatory view which showed the notification button in a disassembled state, (a) is shown from the front side, (b) is shown from the back side, respectively. It is an explanatory view showing a horizontal section of a notification button part in an intercom base unit from below.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An intercom base unit that is an embodiment of the present invention will be described in detail below based on the drawings.

FIG. 1 is an explanatory diagram showing the intercom base unit 1 from the front side. FIG. 2 is an explanatory diagram showing the intercom base unit 1 from the rear side with the rear case 9 removed. FIG. 3 is an explanatory diagram showing the intercom base unit 1 from the rear side with the board 3 removed. FIG. 4 is a perspective explanatory view showing the intercom base unit 1 in a disassembled state from the front side. FIG. 5 is a perspective explanatory view showing the intercom base unit 1 in a disassembled state from the rear side. FIG. 6 is a perspective explanatory view showing the notification button 8 in a disassembled state, with (a) showing it from the front side and (b) showing it from the back side, respectively. FIG. 7 is an explanatory diagram showing a horizontal section of the notification button 8 portion of the intercom base unit 1 from below.

The intercom base unit 1 has a main body case assembled with a front case 2 disposed on the front side and a rear case 9 disposed on the rear side. A display section 4 for displaying images captured by the intercom device, and a communication section 5 for communicating with an intercom handset are provided. In addition, on the front of the main body case, there is a response button 6 for responding to calls from the intercom slave unit, setting buttons 7, 7 used for setting the intercom base unit 1, and an alarm button 8 used for fire alarms. , 8, etc., are provided with various buttons that can be pressed 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 explained in detail.
The notification button 8 is provided below the display section 4 on the front surface of the main body case, and includes 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. An elastic member 13 is provided between the elastic member 13 and the elastic member 13.

The operating member 11 includes an operating section 21 that bulges forward, a loose insertion section 22 that extends laterally from the operating section 21, and a cover that is adjacent to the operating section 21 on the opposite side of the loose insertion section 22. It is a member made of synthetic resin and has an engaging portion 23. The operating section 21 is formed into a rectangular shape that is elongated in the left-right direction when viewed from the front, and the front surface is an operating surface that is pressed and operated by the user. Further, on the rear surface of the operation unit 21, at one end in the left-right direction (one end in the longitudinal direction), there is an operation projection for turning ON/OFF the switch 50 mounted on the board 3. 24 protrudes rearward. Furthermore, 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 provided at a location substantially in the center of the rear surface of the operating portion 21 to protrude rearward.

The loose insertion portion 22 extends laterally from the end of the operating portion 21 on the side opposite to the end on the side where the operating protrusion 24 is provided in the left-right direction. The loose insertion part 22 has a loose insertion hole that penetrates in the front-rear direction and into which a fixing screw 40 for screwing the notification button 8 (particularly the holding member 12) to the rear surface of the front case 2 can be loosely inserted. is provided. The engaged portion 23 is a tongue-shaped portion extending rearward from the end 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) includes: An engagement recess 26 that can be engaged with the engagement protrusion 30 of the holding member 12 is provided.

Like the operating member 11, the holding member 12 is an elastic synthetic resin member formed into a rectangular plate shape that is elongated in the left-right direction, and is provided with housing walls 27 that stand up forward along the upper and lower sides. The operating member 11 can be accommodated between the upper and lower housing walls 27, 27. Further, on the front surface of the holding member 12, an installation portion 28 in which the elastic member 13 can be installed is provided at a position facing the abutting rib 25 when the operating member 11 is accommodated. Furthermore, an operation window 29 through which the operation protrusion 24 can be inserted is formed at one end in the left-right direction of the holding member 12, and is engaged with the engagement recess 26 when the operation member 11 is accommodated. Possible engagement projections 30 project further laterally beyond the upper and lower receiving walls 27, 27. In addition, a fixing part 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, 41 having substantially the same shape as the operating section 21 of the operating member 11. Further, a fixing boss 42 for fixing the notification button 8 by screwing the fixing screw 40 is provided at a position on the outer side in the left-right direction of each button window 41 to protrude rearward.

Then, to explain how to attach the notification button 8 having the above-described configuration to the main body case, first, the front case is attached so that the operation part 21 of the operation member 11 protrudes forward of the front case 2 through the button window 41. An operating member 11 is disposed on the rear side of 2. In this arrangement, both the left and right operating members 11 are positioned such that the engaged portion 23 side is located inside in the left-right direction, and the loosely inserted portion 22 side is located outside in the left-right direction. Next, after installing the elastic member 13 in the installation part 28 of the holding member 12, while engaging the engagement protrusion 30 with the engagement recess 26 and positioning the operation protrusion 24 in the operation window 29, the accommodation wall 27, The operating member 11 is housed between the openings 27 and the holding member 12 is assembled from the rear side of the operating member 11. Finally, when the fixing portion 31 of the holding member 12 is screwed to the fixing boss 42 of the front case 2 using the fixing screw 40, the installation of the notification button 8 is completed. Although the end of each notification button 8 on the engaged part 23 side is not screwed, etc., by installing the board 3 behind the notification buttons 8, 8, the end on the engaged part 23 side is also fixed by being sandwiched from the front and back by the inner surface of the front case 2 and the front surface of the board 3 (FIG. 7).

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

Further, behind the notification buttons 8, 8 installed as described above, there is a board 3 that controls the main operations of the intercom base unit 1 (for example, communication operations with intercom slave units, video transmission/reception operations, etc.). The board 3 is formed to be as small as possible in order to make the intercom base unit 1 thinner. The board 3 according to this embodiment has a large cutout at the rear of the notification buttons 8, 8, and the board 3 is located only about half inside each notification button 8 in the left-right direction. Therefore, if the operation part of the notification button 8 is directly held in the main body case as in the conventional structure, when the holding part is damaged, the board 3 is not located at the rear. The notification button 8 will fall into the main body case. However, in the structure according to this embodiment, the operation member 11 is held by the holding member 12 in order to hold the notification button 8 on the main body case, and the operation member 11 is held directly on the main body case. Therefore, the structure is such that the holding part (fixing part 31, etc.) is not easily damaged in the first place. Moreover, even if the holding part is damaged, the operating member 11 is supported by the holding member 12 whose inner end in the left and right direction is held between the front and rear surfaces of the front case 2 and the front surface of the board 3. It is also possible to prevent the notification button 8 from falling into the main body case.

According to the intercom base unit 1 having the above configuration, the notification button 8 is fixed to the operating member 11 having the operating part 21 and the rear surface of the front case 2, and the holding member 11 is fixed to the rear surface of the front case 2. 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 held directly by the main body case as in the past, but is separated 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 part 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. Since it is clamped and fixed from the front and back by the rear surface and the board 3 arranged at the rear of the holding member 12, if the board 3 is located even behind the inner end of the notification button 8 in the left-right direction, Even in a situation where the board 3 does not function as a wall when the button is damaged, as in the conventional case, it is possible to effectively prevent the notification button 8 from falling into the main body case. In addition, the configuration related to fixing the holding member 12 can be simplified, and the intercom base device 1 can be made smaller and thinner.

In addition, in the intercom device according to the present invention, not only the overall structure of the intercom device but also the structure related to the buttons etc. can be changed as necessary without departing from the spirit of the present invention.

For example, in the embodiments described above, the present invention is applied to the notification button, but it goes without saying that it can be suitably applied to other buttons including the response button.
Further, in the above embodiment, a button that is long in the left-right direction is described, but it is also possible to form a button that is long in the vertical direction or in the inclination direction.
Furthermore, the design can be changed as appropriate regarding which end of the button in the longitudinal direction is screwed, and in the above embodiment, the inner end is screwed in the left and right direction, and the outer end is screwed. It is possible to configure the structure so that the parts are sandwiched from the front and back.
In addition, although the above embodiment describes an intercom base unit, the present invention can also be suitably applied to other intercom devices such as an intercom slave unit or a collective entrance unit as long as the button is provided with a push button. be able to.

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

Claims (1)

There is a button window on the front of the main case, and
An intercom device in which a button having an operation section that is pressed and operated by a user is built into the main body case in a state in which the operation section projects forward of the main body case through the button window,
The button is
an operating member having the operating section;
a holding member fixed within the main body case and holding the operating member within the main body case;
an elastic member interposed between the operating member and the holding member;
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 connected to the inner surface of the main body case and a board arranged behind the holding member. An intercom device characterized by being clamped and fixed from the front and back by the and.

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