JP2008178077A - Call terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a call terminal preventing a conductive connection means from being exposed while changing functions without replacing the whole. <P>SOLUTION: The call terminal A is divided into a body module B and an exposure panel C. The body module B has a power switch SW for switching power supply to a contact terminal at a module side while an operation section 50 is exposed to a front side. At a part facing the power switch SW at the back side of the exposure panel C, there is a power supply operation section 51 for turning on/off the power switch SW. While the exposure panel C is attached to the body module B, the power switch SW is turned on when a power supply operation section 51 pushes the operation section 50 into a hole 41 for switches. While the exposure panel C is detached from the body module B, the pushing operation of the operation section 50 by the power supply operation section 51 is cancelled, thus turning off the power switch SW. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a call terminal that is attached to a wall and is capable of making a call with a partner terminal.

  Conventionally, an interphone system has been constructed by connecting to a slave terminal (door phone slave) as a counterpart terminal installed outside the house, for example, by using a signal line as this type of telephone terminal. A device (intercom base phone) that can communicate with a side terminal is provided.

  In recent years, there has also been proposed an embedded type telephone terminal that is attached in such a manner that the rear part of the body is embedded in the wall in order to keep the amount of protrusion of the body from the wall surface small (for example, Patent Document 1). reference).

In the call terminal described in Patent Document 1, in order to provide a uniform appearance with other embedded wiring devices and to reduce the cost of members used for mounting, the embedded terminal is widely used. It can be mounted on a wall using a switch box for a type of wiring apparatus. That is, the telephone terminal is fixed to the switch box using a mounting screw that is screwed into a screw hole provided in the switch box so that the rear part of the telephone terminal body is housed in the switch box. Here, in the telephone terminal of Patent Document 1, since the mounting hole for the mounting screw is provided in the container and the container can be directly fixed to the switch box, the embedded wiring apparatus is fixed to the switch box. Therefore, the mounting frame used for this purpose is unnecessary.
JP-A-6-291818

  By the way, in the above-mentioned call terminal, all the internal circuits for enabling a call with the counterpart terminal are housed in one container, and therefore, when the function of the call terminal is changed even partially. Need to replace the entire call terminal. In particular, when the call terminal is attached with the rear part embedded in the wall, the exchange work of the entire call terminal is troublesome.

  Therefore, the telephone terminal is fixed to the wall with the main body module, and the exposed panel that is detachably attached to the front side of the main body module, and receives power supply from the connection means provided in the main body module while being attached to the main body module. It can be considered that the main body module and the exposed panel can be individually replaced. However, in this configuration, the connection means may be energized even when the exposed panel is detached from the main body module, and it is not preferable that the connection means be exposed in this state.

  The present invention has been made in view of the above-mentioned reasons, and it is possible to change the function without exchanging the entire device, while the connection means in an energized state is not exposed. The purpose is to provide.

  The invention of claim 1 is a call terminal attached to a wall and capable of making a call with a counterpart terminal, wherein the main body module is fixed to the wall, and is detachably mounted on the front side of the main body module. And an exposed panel that receives power supply from the connection means provided in the main body module in a state where the main body module is mounted, and the main body module has at least a power switch for turning on / off the connection means to the operation section of the power switch. The power switch can be turned on with the exposed panel attached to the main module at the part facing the power switch on the rear side of the exposed panel. Power supply operating means for turning off the power switch by detaching is provided.

  According to this configuration, since the call terminal is divided into the main body module and the exposed panel, the main body module and the exposed panel can be exchanged separately. For example, when changing the function of the exposed panel, It is only necessary to replace the exposed panel attached to the main body module with another type of exposed panel, and the main body module itself does not need to be replaced. Therefore, the function of the call terminal can be changed without exchanging the entire call terminal. In addition, the power switch can be turned on with the exposed panel attached to the main unit module at the position facing the power switch on the back side of the exposed panel, and the power switch can be turned off by removing the exposed panel from the main unit module. Therefore, when the exposed panel is detached from the main body module, the power switch is off and the energization to the connecting means is stopped. Therefore, the connection means in the energized state is not exposed.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the main body module comprises an embedded module fixed to the wall in such a manner that the rear part is housed in the wall.

  According to this configuration, since the rear part of the main body module fits in the wall, the main body module and the exposed panel wall surface can be compared with the case where the main body module is fixed with the back surface facing the wall surface without being embedded in the wall. The protrusion amount of can be kept small. Therefore, for example, even when the call terminal is installed in a corridor or the like where the space secured in front of the wall surface is relatively narrow, there is an advantage that the call terminal is unlikely to obstruct traffic.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the power switch is a momentary-type pushbutton switch, and the power operation means attaches the exposed panel to the main body module to supply power. The operation part of the switch is pressed.

  According to this configuration, the power operation means presses the operation part of the power switch by attaching the exposed panel to the main body module, so the power switch is turned on only by attaching the exposed panel to the main body module. This saves you the trouble of turning on the power switch.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the power switch is a slide switch that slides in a plane along the front surface of the main body module, and the power operation means is an operation portion of the power switch. The exposed panel is attached to the main body module by being slid in the direction to turn on the power switch along the front surface of the main body module, and in the direction to turn off the power switch along the front surface of the main body module. It is characterized by being detached from the main body module by being slid.

  According to this configuration, the exposed panel is attached to the main body module by being slid along the front surface of the main body module in the direction of turning on the power switch. Therefore, the power switch is turned on only by attaching the exposed panel to the main body module. This saves the trouble of turning on the power switch.

  According to a fifth aspect of the present invention, in the first or second aspect of the present invention, the power switch is a momentary type push button switch, and the power operation means has a structure for attaching the main body module of the exposed panel. It is separate from the equipped panel body, and is operated to move relative to the panel body between the position where the operation part of the power switch is pressed and the position where it is not pressed with the exposed panel mounted on the body module. The power switch is held at a position that presses at least the operation portion of the power switch.

  According to this configuration, since the power switch can be turned on / off by moving the power operation means relative to the panel body, the power switch can be turned on / off even when the exposed panel is mounted on the main body module. Even if not, the power switch can be turned off as needed. In addition, there is an advantage that the mounting structure of the panel main body with respect to the main body module can be freely designed as compared with the configuration in which the power switch is turned on / off by moving the panel main body.

  According to a sixth aspect of the present invention, in the first or second aspect of the present invention, the power switch is a slide switch that slides in a plane along the front surface of the main body module. The power switch along the front of the main module is separate from the panel main body that has a mounting structure for the main module, and is fitted into the operation section of the power switch, with the exposed panel attached to the main module. It is operated so as to move with respect to the panel body between a position where the switch is turned on and a position where it is turned off, and when the exposed panel is detached from the body module, the power switch is moved to a position where it is turned off.

  According to this configuration, since the power switch can be turned on / off by moving the power operation means relative to the panel body, the power switch can be turned on / off even when the exposed panel is mounted on the main body module. Even if not, the power switch can be turned off as needed. In addition, there is an advantage that the mounting structure of the panel main body with respect to the main body module can be freely designed as compared with the configuration in which the power switch is turned on / off by moving the panel main body.

  According to a seventh aspect of the present invention, in the third aspect of the invention, on the back side of the exposed panel, the connecting means is electrically connected to the connecting means of the main body module by mounting the exposed panel on the main body module. The main body module has a rectangular front surface, and when the exposed panel is mounted, the main module is hooked to a part of the exposed panel, thereby supporting a fulcrum portion that serves as a fulcrum for rotating the exposed panel around one side of the front surface. It is provided on the front surface side, the connecting means is disposed near the one side on the front surface of the main body module, and the power switch is disposed near the other side facing the one side on the front surface of the main body module. And

  According to this configuration, when the exposed panel is detached from the main body module, since the power switch is turned off by the power operation means and the energization to the connection means is stopped, the electrical connection of the connection means is released. It is possible to avoid problems such as arcing when the electrical connection of the connecting means is released. On the other hand, when the exposed panel is attached to the main body module, after the connection means are electrically connected to each other, the power switch is turned on by the power operation means and the connection means is energized. Problems such as arcing sometimes can be avoided.

  In the present invention, since the call terminal is divided into the main body module and the exposed panel, the main body module and the exposed panel can be exchanged separately, so that the call terminal can be replaced without replacing the entire call terminal. The function can be changed. In addition, since power operation means for turning off the power switch by attaching / detaching the exposed panel to / from the main body module is provided, the power switch is off when the exposed panel is detached from the main body module, and the connection means is energized. Is stopped, and there is an advantage that the connection means in the energized state is not exposed.

  In each of the following embodiments, a signal line (not shown) is connected to a slave terminal (not shown) as a counterpart terminal installed outside the house and attached to the wall in the house. The configuration of the call terminal according to the present invention will be described using an interphone system constructed as described above and a parent terminal that can communicate with a child terminal as an example of a call terminal. This call terminal is provided with a video display unit, and displays the video imaged by the camera of the counterpart terminal by being connected to the counterpart terminal provided with a camera (not shown) for imaging the visitor. be able to. In addition to the camera, the handset terminal includes an operation unit that allows operation input, a voice input / output unit that includes a speaker and a microphone and inputs / outputs voice during a call with the call terminal, and an audio signal and a video signal. A signal processing unit that performs input / output and a terminal unit to which a signal line is connected are provided.

(Embodiment 1)
As shown in FIG. 1, the telephone terminal A of the present embodiment includes a main body module B fixed to the wall so that the rear portion is housed in the wall, and an exposed panel C that is detachably attached to the front side of the main body module B. And. In the following, the configuration of the call terminal A will be described with the up, down, left, and right directions being the state in which the call terminal A is attached to the wall.

  As shown in FIG. 2, the main body module B has a body 3 composed of a body 1 formed in a box shape having a rectangular opening on the front surface and a cover 2 covered on the front surface of the body 1. And the first circuit portion 4 in which various electrical components are mounted on the circuit board is housed in the container 3. Furthermore, the main body module B has terminal windows 5 penetrating through two places on the rear wall of the body 1, and a power supply terminal section 6 (see FIG. 1) to which a power line (not shown) for supplying commercial power is connected. ) To be exposed from the one terminal window 5 to the outside of the container 3, and the signal terminal portion 7 to which a signal line (not shown) is connected is connected to the container 3 from the other terminal window (not shown). It is prepared to be exposed to the outside. The body 1 and the cover 2 are connected to a coupling hole 8a provided in a coupling piece 8 projecting rearward from each vertical end of the cover 2 and a coupling claw 9 provided at a front end of both end surfaces of the body 1 in the vertical direction. Are engaged by engaging each other.

  The exposed panel C includes a panel case 10 formed in a thin box shape with a rectangular front surface, and a second circuit portion (not shown) on which various electrical components are mounted is housed in the panel case 10. It has a configuration. Further, the exposed panel C is provided with a transparent display window 11 on a part of the front wall of the panel case 10, so that the image display unit 12 made of a liquid crystal panel can be viewed through the display window 11. In preparation. Here, the panel case 10 has a display window 11 at a position on the left side of the front surface, and a speaker mounting portion 13 having a large number of small holes is disposed on the right side of the display window 11 and the speaker. An operation handle 15 constituting an operation unit 14 (see FIG. 6) is disposed below the attachment unit 13. Further, a microphone hole 16 is formed at the lower left of the display window 11, and a plurality of push buttons 17 constituting the operation unit 14 are arranged in the right and left direction to the right of the microphone hole 16, that is, below the display window 11. ing. In the panel case 10, a speaker 18a (see FIG. 6) is provided at a position corresponding to the speaker mounting portion 13, and a microphone 18b (see FIG. 6) is provided at a position corresponding to the microphone hole 16. The microphone 18b constitutes a voice input / output unit 18 that inputs and outputs voice during a call with the counterpart terminal. In the panel case 10, various setting switches (not shown) and telephone calls constituting the operation unit 14 together with the operation handles 15 and the push buttons 17 are located at positions corresponding to the operation handles 15 and the push buttons 17. A switch for starting and ending (not shown) is provided.

  By the way, the main body module B of this embodiment is attached to a wall using the switch box SB for embedded wiring apparatuses installed in the wall, as shown in FIG. The switch box SB is formed in a box shape with a mounting window opened on the front surface, and a mounting screw (not shown) for fixing the main body module B to the switch box SB on a pair of inner surfaces facing vertically. A plurality of fixture fixing protrusions 22 each having a screw hole 21 are provided. Here, the fixture fixing protrusion 22 is provided in the mounting window of the switch box SB so that the screw hole 21 is exposed forward from the mounting window of the switch box SB. A rectangular construction hole 23 is opened in a portion corresponding to the switch box SB in the wall material W constituting the wall surface. The construction hole 23 is formed in a size that is smaller than the mounting window of the switch box SB and exposes all the screw holes 21 provided in the fixture fixing protrusion 22.

  The main body module B is attached to the switch box SB from the front through the construction hole 23, and is formed in a shape and size capable of accommodating the rear part of the body 3 in the switch box SB. In the present embodiment, the container body 3 is formed in a size corresponding to the switch box SB to which up to two mounting frames (not shown) can be mounted. The single mounting frame here means three mounting frames standardized in “JIS C8375”. In the following, two single mounting frames are connected in the left-right direction. The dimension is called “for 2 stations”, and the dimension with 3 connected is called “for 3 stations”. That is, the main body module B of the present embodiment is set to a size that can be attached to a double switch box SB in which two instrument fixing protrusions 22 are provided on each of a pair of inner surfaces facing vertically.

  More specifically, the cover 2 has a pair of mounting plates 24 that are integrally extended so as to extend away from the respective vertical edges on the front surface side. The pair of mounting plates 24 are formed over substantially the entire length of the cover 2 in the left-right direction. Each mounting plate 24 has a plurality (two in this case) of box holes 25 through which mounting screws are inserted, like the mounting frame used when fixing the embedded wiring device to the switch box SB. A fixing screw (not shown) that fixes a decorative plate P (described later) at a portion that is formed and is outside the box hole 25 in the vertical direction (that is, the upper side of the upper mounting plate 24 and the lower side of the lower mounting plate 24). A plurality of plate holes 26 (not shown) are formed (two in this case). Each mounting plate 24 protrudes forward compared to the cover 2. Furthermore, the periphery of each box hole 25 in each mounting plate 24 is formed thicker than other parts of the mounting plate 24 so as to suppress deformation of the container 3 when the mounting screw is tightened. The periphery of the box hole 25 is reinforced.

  Here, each of the main body module B and the exposed panel C is provided with attachment means for attaching the exposed panel C to the main body module B by engaging with each other. In the main module B, the flange 27 protruding from the front surface of the lower mounting plate 24 as shown in FIGS. 4 (b) and 4 (c) and the upper piece as shown in FIGS. 5 (a) and 5 (b). An engagement hole 28 provided in the attachment plate 24 is provided as attachment means. The flanges 27 protrude forward from the front surface of the mounting plate 24 and are formed in an L shape by extending the tip part upward, and a plurality (three in this case) are arranged in parallel in the left-right direction. Is provided. The engagement hole 28 is formed by cutting out each end of the mounting plate 24 in the left-right direction.

  In the exposed panel C, a hooking hole 29 (see FIG. 4) that is formed at a position corresponding to each collar piece 27 at a lower end portion on the back side and is hooked to the collar piece 27 by inserting the tip of the collar piece 27. ) And a pair of engagement claws 19 formed in an L shape by projecting at the positions corresponding to the respective engagement holes 28 at the upper end portion on the back side and extending in the direction in which the front end portions approach each other. (See FIG. 5) is provided as an attachment means. With this configuration, the upper end of the exposed panel C is pressed against the body module B side with the tip of the flange 27 of the body module B inserted into the hooking hole 29 of the exposed panel C, and the engaging claw 19 of the exposed panel C is engaged. Is engaged with the engagement hole 28 of the main body module B, the exposed panel C is attached to the main body module B.

  On the other hand, when the call terminal A is simply attached to the switch box SB, a gap is generated between the call terminal A and the wall material W in the construction hole 23. Therefore, a decorative plate P for an embedded wiring device is attached to the telephone terminal A. As shown in FIG. 3, the decorative plate P includes a frame-shaped plate frame 30 that surrounds the periphery of the exposed panel C, and a decorative cover 31 that is attached to the front side of the plate frame 30. The plate frame 30 is fixed by screwing a fixing screw into a plate hole 26 provided in the mounting plate 24, and the decorative cover 31 is provided with a locking claw (not shown) projecting on the back surface. It is attached to the plate frame 30 by being locked in a locking hole (not shown). Thereby, the construction hole 23 is closed by the telephone terminal A and the decorative plate P. Here, a triple decorative plate P is used. In the present embodiment, the protruding amount of the call terminal A from the wall surface is set so that the protruding height of the front surface of the exposed panel C from the wall surface is aligned with the protruding height of the decorative plate P from the wall surface.

  In addition, the exposed panel C has a front surface formed in the same size as a wiring device that can be attached to the triple switch box SB. The exposed panel C constitutes a plate portion 32 (see FIG. 4) in which each end portion in the vertical direction of the panel case 10 is formed to be thinner in the front-rear direction than the other portion by recessing the back side. Each plate portion 32 is formed over substantially the entire length of the panel case 10 in the left-right direction, and is abutted against the mounting plate 24 of the main body module B with the exposed panel C attached to the main body module B. Therefore, in a state where the exposed panel C is mounted on the main body module B, the plate portion 32 covers the front side of the mounting screw. However, the exposed size of the exposed hole C for the plate hole 26 is set smaller than that of the front surface of the main module B so that the exposed hole C is exposed forward even when the exposed panel C is mounted on the main module B. .

  By the way, the internal circuit for enabling communication with the other terminal in the call terminal A is divided into the first circuit part 4 in the main body module B and the second circuit part in the exposed panel C. Is provided.

  That is, the first circuit unit 4 in the main body module B includes a power supply board 36 and an interface board 37 that face each other in the front-rear direction as shown in FIG. 2, and a base board 38 that connects the power supply board 36 and the interface board 37. A circuit board is provided. The power board 36 is disposed behind the interface board 37, and the base board 38 is disposed below the power board 36 and the interface board 37. As shown in FIG. 6, the power supply board 36 is connected to the power supply terminal section 6 through the power switch SW, and supplies power supply 39 (AC / DC power supply section 39a and DC / DC power supply section) for supplying DC power to the internal circuit. 39b), and the interface board 37 is connected to the signal terminal unit 7 as shown in FIG. 6 and has an external call detection function for detecting a call from the partner terminal based on at least the line voltage of the signal line. An interface unit 40 is provided. Here, in a state where the power supply line is connected to the power supply terminal unit 6, power is supplied to the internal circuit when the power switch SW is turned on, and power supply to the internal circuit is stopped when the power switch SW is turned off. The power switch SW is mounted on the power supply board 36 and is inserted into the front side of the main body module B through an insertion hole (not shown) penetrating the interface board 37 and a switch hole 41 penetrating the cover 2. Exposed. The power switch SW will be described later in detail.

  On the other hand, the second circuit unit in the exposed panel C is connected to the audio input / output unit 18, the video display unit 12, and the external interface unit 40 as shown in FIG. 6, and inputs / outputs audio signals and video signals. A signal processing unit 42 and an overall control unit 43 that receives an operation input from the operation unit 14 and controls the operation of each unit of the internal circuit are provided. The signal processing unit 42 includes a sound processing unit 44 having a speaker amplifier that amplifies the sound signal to the speaker 18a and a microphone amplifier that amplifies the sound signal from the microphone 18b, and a demodulation that demodulates the video signal from the partner terminal. A video transmission processing unit 45 that has a circuit and displays video on the video display unit 12 is provided. In the present embodiment, the audio signal and the video signal are multiplexed and transmitted on the signal line. Therefore, the signal processing unit 42 is provided with a demultiplexing unit 42a that is inserted between the audio processing unit 44 and the video transmission processing unit 45 and the external interface unit 40 and separates the multiplexed audio signal and video signal. It has been.

  By the way, the exposed panel C is supplied with electric power from the connecting means provided in the main body module B while being mounted on the main body module B. More specifically, the module side contact terminal 46 as the connection means provided on the front side of the main module B and the panel side contact terminal 47 as the connection means provided on the back side of the exposed panel C are brought into contact with each other. As a result, the first circuit portion 4 and the second circuit portion are electrically connected to each other, and power is supplied to the exposed panel C.

  The module side contact terminals 46 are disposed on the base substrate 38 in the main body module B as shown in FIG. 2 and are exposed to the front side of the main body module B through the contact terminal holes 48 provided in the cover 2. The module-side contact terminal 46 and the panel-side contact terminal 47 are arranged at positions where they face each other with the exposed panel C attached to the main body module B. Just by attaching the exposed panel C to the main body module B, When the contact terminal 46 and the panel side contact terminal 47 are in contact with each other, the electrical connection between the first circuit portion 4 and the second circuit portion is completed. Therefore, workability is improved as compared with the case where the work of mounting the exposed panel C on the main body module B and the work of connecting the first circuit unit 4 and the second circuit unit are performed separately.

  Further, the call terminal A of the present embodiment can alternatively be selected from a plurality of types of exposed panels C with different exposed panels C, and the main body module B is shared by the plurality of types of exposed panels C. The Specifically, the exposure panel C is appropriately changed according to the function of the call terminal A, such as the audio input / output unit 18, the video display unit 12, the signal processing unit 42, the operation unit 14, and the overall control unit 43. On the other hand, the main unit module B has a common configuration, such as the power supply terminal unit 6, the power supply unit 39, the signal terminal unit 7, and the external interface unit 40, regardless of the function of the call terminal A. Has been. Further, in the plurality of types of exposed panels C, the configuration of the hooking hole 29 and the engaging claw 19 as the attaching means and the configuration of the panel side contact terminal 47 as the connecting means are common specifications.

  Examples of the plurality of types of exposure panels C include, for example, an exposure panel C in which a function for recording and reproducing video is added to the exposure panel C having the above-described configuration, and the screen size of the video display unit 12 is increased or decreased. Exposed panel C or the like. That is, by selectively selecting and mounting a plurality of types of exposed panels C on the common body module B, a plurality of types of call terminals A having different functions can be realized.

  According to the configuration described above, since the call terminal A is divided into the main body module B and the exposed panel C, the main body module B and the exposed panel C can be exchanged separately, and a plurality of types of exposed panels can be used. Since the main body module B can be shared in C, the presence / absence of the recording / playback function in the call terminal A, the screen size, etc. can be obtained simply by replacing the exposed panel C attached to the main body module B with another type of exposed panel C. Can be easily changed, and there is no need to replace the entire call terminal A. Here, since the exposed panel C is detachably attached to the main body module B, the exposed panel C can be easily replaced. Further, since it is not necessary to prepare the main body module B for each of the various exposed panels C, the cost for developing and manufacturing the main body module B can be kept low while providing the call terminal A having various functions. be able to. In addition, since the functions related to audio processing and video processing are concentrated in the exposed panel C in the present embodiment, the number of connection lines for performing electrical connection between the exposed panel C and the main body module B (that is, module side contact terminals) There is also an advantage that the number of terminals 46 and the panel-side contact terminals 47 can be relatively small.

  By the way, since the power switch SW described above turns on and off the power supply to the internal circuit, the module-side contact terminal 46 as the connection means is energized while the power switch SW is on, and the power switch SW is off. The power supply to the module side contact terminal 46 is stopped. Here, the power switch SW of the present embodiment is composed of a momentary type push button switch having a hinge lever type operation unit 50 as shown in FIG. 1, and is operated in a state where no pressing force is applied to the operation unit 50. The tip of the portion 50 is disposed so as to protrude from the switch hole 41 of the cover 2 to the outside of the container 3. The power switch SW is off when no pressing force is applied to the operation unit 50 and the tip of the operation unit 50 protrudes from the switch hole 41 of the cover 2, and the pressing force is applied to the operation unit 50. When the operation unit 50 is pushed into the switch hole 41, it is turned on.

  Here, for the exposed panel C, the power switch SW can be turned on while the exposed panel C is mounted on the main body module B, and the power switch SW is turned off by detaching the exposed panel C from the main body module B. A power supply operating means is provided. In the present embodiment, the portion facing the power switch SW on the back side of the exposed panel C is used as the power operating unit 51 as power operating means, and the operating panel 50 of the power switch SW is mounted by attaching the exposed panel C to the main body module B. Is pressed by the power supply operation unit 51. That is, in a state where the exposed panel C is mounted on the main body module B, the power switch 51 is turned on when the power operating section 51 pushes the operating section 50 of the power switch SW into the switch hole 41 as shown in FIG. In the state where the exposed panel C is detached from the main body module B, as shown in FIG. 3, the push operation of the operation unit 50 of the power switch SW by the power operation unit 51 is released and the power switch SW is turned off.

  Therefore, in the state where the exposed panel C is detached from the main body module B, the power switch SW is off, and the energization to the module side contact terminal 46 as the connection means is stopped. Therefore, the module-side contact terminal 46 that is energized is not exposed.

  Note that when the call terminal A is not separable like the main body module B and the exposed panel C of the present embodiment, the power switch SW is disposed at the back of the operation handle 15, for example, as shown in FIG. Then, it is conceivable that the power switch SW can be operated with the operation handle 15 removed. However, in this configuration, in order to expose the power switch SW with the operation handle 15 removed, a switch that configures the operation unit 14 together with the operation handle 15, the video display unit 12, and the like are mounted as shown in FIG. 7B. The cutout 52a must be formed in the portion of the panel substrate 52 corresponding to the power switch SW, and the arrangement of the components on the panel substrate 52 is limited by the cutout 52a. In this embodiment, there is an advantage that the degree of freedom of arrangement of each component in the exposed panel C is high.

  Next, a procedure for attaching the above-described call terminal A to the wall will be described with reference to FIG. First, the power supply line and the signal line are inserted and connected to the main body module B, and then the main body module B is fixed to the switch box SB with mounting screws. Then, the plate frame 30 is attached to the main body module B with fixing screws, and then the exposed panel C is attached to the main body module B. Then, when the decorative cover 31 is attached to the plate frame 30, the attaching operation is completed. This mounting operation is similar to the mounting operation of the embedded wall switch, assuming that the main body module B corresponds to the switch body and the exposed panel C corresponds to the switch handle. Similarly, it is relatively easy to install. In the example of FIG. 3, a regulating piece 49 that protrudes upward from the upper edge of the exposed panel C is provided, and the decorative cover 31 is attached to the regulating piece 49 so that the decorative cover 31 is removed from the plate frame 30. In other words, the exposed panel C cannot be detached from the main body module B.

  Here, as described above, with the tip of the flange 27 of the main body module B being inserted into the hooking hole 29 of the exposed panel C, the upper end of the exposed panel C is pressed against the main body module B side to engage the exposed panel C. The exposed panel C is attached to the main body module B by engaging the joint claw 19 with the engagement hole 28 of the main body module B. In short, the hook 27 of the main module B is caught around a part of the exposed panel C when the exposed panel C is mounted, so that the exposure around one side (lower end edge) of the front of the main module B is shown in FIG. It functions as a fulcrum part that becomes a fulcrum of rotation of the panel C. Here, in the present embodiment, the module side contact terminal 46 is disposed closer to the one side (lower end edge) on the front surface of the main body module B, and the power switch SW is connected to the other side (opposite side) on the front surface of the main body module B ( It is arranged closer to the upper edge.

  Therefore, when the exposed panel C is detached from the main body module B, the power switch SW is turned off by the power operation unit 51 and the energization to the module side contact terminal 46 is stopped. The electrical connection with the contact terminal 47 is released, and it is possible to avoid problems such as the occurrence of an arc when the electrical connection between the module side contact terminal 46 and the panel side contact terminal 47 is released. On the other hand, when the exposed panel C is attached to the main body module B, the power switch SW is turned on by the power operation unit 51 after the module side contact terminal 46 and the panel side contact terminal 47 are electrically connected to each other. Since energization of the module side contact terminal 46 is started, it is possible to avoid problems such as arcing when the module side contact terminal 46 and the panel side contact terminal 47 are connected.

  As shown in FIG. 9, the flange 27 in the main body module B is disposed on the upper mounting plate 24, the engagement hole 28 is disposed on the lower mounting plate 24, and the hooking hole in the exposed panel C is provided. 29 is formed at the upper end portion on the back side and the engaging claw 19 is formed at the lower end portion on the back side, when the exposed panel C is mounted on the main body module B, around the upper end edge of the front surface of the main body module B. The exposed panel C rotates. Therefore, in the case of FIG. 9, it is desirable that the module side contact terminal 46 is disposed near the upper end edge of the front surface of the main body module B, and the power switch SW is disposed near the lower end edge of the front surface of the main body module B.

  The operation of the intercom system constructed by using the call terminal A configured as described above together with the counterpart terminal will be briefly described below.

  The call terminal A outputs a ringing sound from the other party terminal through the speaker 18a when the visitor calls from the other party terminal, and displays an image captured by the camera of the other party terminal on the video display unit 12. indicate. When the operation handle 15 for a call is pushed, the call terminal A can enter a call with the other terminal. If the operation handle 15 for a call is pushed again, the call with the partner terminal is terminated.

  In the present embodiment, an example in which the switch box SB is used to attach the call terminal A to the wall has been described. However, the present invention is not limited to this configuration, and a dedicated member other than the switch box SB (for example, embedded wiring) The call terminal A may be attached to the wall by using a pinch fitting used when attaching the appliance.

  Further, in the present embodiment, as the attaching means, the main body module B is provided with the collar piece 27 and the engaging hole 28, and the exposed panel C is provided with the hooking hole 29 and the engaging claw 19, but this configuration is an example. However, it is only necessary that attachment means for attaching the exposed panel C to the main body module B by engaging with each other is provided on each of the main body module B and the exposed panel C. A nail | claw piece and an engagement hole may be provided in the exposed panel C by providing a nail | claw.

(Embodiment 2)
As shown in FIG. 10, the call terminal A of the present embodiment is a slide switch having an operation unit 50 in which the power switch SW slides in the vertical direction (the horizontal direction in FIG. 10) along the front surface of the main body module B. Thus, it differs from the call terminal A of the first embodiment in that the recessed portion 53 into which the operating portion 50 is inserted is provided on the back side of the exposed panel C so as to be opposed to the power switch SW.

  In the present embodiment, the structure of the attachment means in each of the main body module B and the exposed panel C is also different from that in the first embodiment, and the exposed panel C slides in the direction to turn on the power switch SW along the front surface of the main body module B. Thus, the attachment means is configured to be attached to the main body module B and to be detached from the main body module B by being slid along the front surface of the main body module B in the direction of turning off the power switch SW. Therefore, when the exposed panel C is attached to the main body module B, the power switch SW is turned on by sliding the exposed panel C in a state where the operation portion 50 of the power switch SW is engaged with the recess 53, while the exposed switch C is exposed. When the panel C is detached from the main body module, the power switch SW is turned off by sliding the exposed panel C in a state where the operation unit 50 of the power switch SW is engaged with the recess 53.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 3)
As shown in FIG. 11, the call terminal A of the present embodiment is a separate body from the panel main body 54 provided with means for attaching to the main body module B of the exposed panel C, and the exposed panel C is replaced with the main body module B. Embodiment 1 is that the operating element 55 operated so as to move with respect to the panel main body 54 between a position where the operating portion 50 of the power switch SW is pressed and a position where it is not pressed in the mounted state is used as the power operating means. Is different from the call terminal A of FIG.

  The operation element 55 of this embodiment is inserted into and removed from the slide groove 56 provided in the panel main body 54 by sliding in the vertical direction (the horizontal direction in FIG. 11) along the front surface of the main body module B. The distal end portion of the operation portion 50 of the power switch SW is curved in an arc shape that protrudes forward, and the distal end portion of the operation portion 50 is pressed by the operation portion 55 and slides when the operation portion 55 is inserted into the slide groove 56. The power switch SW is turned on by being pushed out of the groove 56, and the power switch SW is turned off by returning the distal end portion of the operation unit 50 into the slide groove 56 in a state where the operation element 55 is removed from the slide groove 56. Here, since the moving direction (front-rear direction) of the operation unit 50 of the power switch SW is different from the moving direction (vertical direction) of the operation unit 55, the operation unit 55 presses the operation unit 50 of the power switch SW. Thus, the power switch SW is kept on without being pushed back to the operation unit 50.

  According to this configuration, since the power switch SW can be turned on / off by moving the operation element 55 with respect to the panel main body 54, the power switch SW can be turned on / off even when the exposed panel C is mounted on the main body module B. The power switch SW can be turned off as necessary without removing the exposed panel C.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 4)
As shown in FIG. 12, the call terminal A of the present embodiment is a slide switch having an operation unit 50 in which the power switch SW slides in the vertical direction (the horizontal direction in FIG. 12) along the front surface of the main body module B. Thus, the operation terminal 55 is provided with an operation hole (not shown) into which the operation unit 50 of the power switch SW is inserted, which is different from the call terminal A of the third embodiment.

  The operation element 55 according to the present embodiment is formed in the slide groove 56 along the front surface of the main body module B in a state where the exposed panel C is attached to the main body module B and the operation hole is unevenly fitted to the operation portion 50 of the power switch SW. When the power switch SW is turned on and off, it moves relative to the panel body 54 between a position where the power switch SW is turned on and a position where it is turned off. Here, detachment prohibiting means is provided so that the exposed panel C cannot be detached from the main body module B in a state where the operation element 55 is in a position where the power switch SW is turned on. In short, when the exposed panel C is detached from the main body module B, the operator 55 needs to be moved to a position where the power switch SW is turned off. The attachment / detachment prohibiting means can be realized, for example, by providing the main body module B with a structure that engages with a part of the operation element 55 at a position where the power switch SW is turned on.

  Other configurations and functions are the same as those of the third embodiment.

(Embodiment 5)
As shown in FIG. 13, the telephone terminal A of the present embodiment is provided with an exposed body module B that is fixed to the wall in such a manner that the back surface faces the wall without being embedded in the wall. Or, it is different from the call terminal A described in any of the fourth embodiment.

  That is, in the first to fourth embodiments, the call terminal A that employs the main body module B composed of the embedded module that is fixed to the wall in a manner that the rear portion is housed in the wall has been described. An exposed body module B that is attached to the wall without being embedded in the wall is employed.

  In the example of FIG. 13, the main body module B includes a body 3 whose front surface is a rectangular shape smaller than the exposed panel C and is formed in a thin box shape thinner than the exposed panel C. An accommodation recess 57 formed in accordance with the outer shape of the container 3 of the module B is opened. By fitting the container 3 of the main body module B into the accommodation recess 57 of the exposed panel C, the exposed panel C becomes the main module B. It is attached to. Here, a panel side contact terminal 47 serving as a connection means is disposed on the bottom surface of the housing recess 57, and a module side contact terminal 46 serving as a connection means is provided at a portion facing the panel side contact terminal 47 on the front surface of the main body module B. The module-side contact terminal 46 and the panel-side contact terminal 47 come into contact with each other simply by attaching the exposed panel C to the main body module B, so that the first circuit portion 4 and the second circuit portion are electrically connected. Is completed. In addition, a mounting hole (not shown) that engages a mounting claw (not shown) as a mounting means formed on the outer peripheral surface of the main body module B is attached to the inner side surface excluding the bottom surface of the housing recess 57. Formed as a means. In addition, the accommodation recessed part 57 of the example of illustration is open | released below.

  According to the configuration described above, the exposure of the present embodiment can be performed even in a place where the embedded body module B cannot be installed due to restrictions caused by, for example, the wall material or the arrangement of pillars existing in the wall. The main body module B of the type may be installable, and as a result, there is an advantage that the degree of freedom of arrangement of the call terminal A is improved.

  Other configurations and functions are the same as those of the call terminal A described in any of the first to fourth embodiments.

  In each of the above-described embodiments, the call terminal A having a function of displaying an image captured by the camera of the counterpart terminal is illustrated as an example of the call terminal A of the present invention. The function of displaying a video on the call terminal A is not essential, and any call terminal A capable of simply making a call with a partner terminal may be used. Further, the call terminal A to which the present invention is applied is not limited to the one that constructs the interphone system together with the slave terminal as in each of the above-described embodiments. For example, a telephone that can make a call with the other party call terminal via a public line It may be.

It is a schematic sectional drawing which shows the structure of Embodiment 1 of this invention. It is an exploded perspective view same as the above. It is a disassembled perspective view which shows the example of attachment same as the above. The structure same as the above is shown, (a) is a front view, (b) is an XX cross-sectional view of (a), and (c) is an enlarged view of a main part Z of (b). The structure same as the above is shown, (a) is a YY sectional view of FIG. 4 (a), (b) is an enlarged view of the main part Z of (a). It is a block diagram which shows a structure same as the above. The other structure same as the above is shown, (a) is a perspective view, (b) is a schematic sectional view. It is the schematic which shows the example of a combination of the exposure panel same as the above, and a main body module. It is a perspective view which shows a structure same as the above. It is a perspective view which shows the other structure same as the above. It is a schematic sectional drawing which shows the structure of Embodiment 2 of this invention. The structure of Embodiment 3 of this invention is shown, (a) is a schematic sectional drawing, (b) is a perspective view of the state which removed the decorative cover. It is a schematic sectional drawing which shows the structure of Embodiment 4 of this invention. The structure of Embodiment 5 of this invention is shown, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the back side.

Explanation of symbols

46 Module side contact terminal (connecting means)
50 operation unit 51 power operation unit (power operation means)
53 Concave portion (power operation means)
54 Panel body 55 Operator (Power supply operation means)
A Call terminal B Main module C Exposed panel SW Power switch

Claims (7)

  A telephone terminal that is attached to the wall and can communicate with the other party's terminal, and is attached to the main unit module that is fixed to the wall and detachably attached to the front side of the main unit module, And an exposed panel that receives power supply from the connection means provided in the main body module, and the main body module has a power switch for turning on / off the connection means to expose at least the operation portion of the power switch to the front side. The power switch can be turned on with the exposed panel attached to the main unit module at the position facing the power switch on the back side of the exposed panel, and the power switch can be turned on by removing the exposed panel from the main unit module. A telephone terminal characterized in that a power supply operating means for turning off is provided.   2. The telephone terminal according to claim 1, wherein the main body module is an embedded module fixed to the wall so that a rear portion is accommodated in the wall.   The power switch is a momentary type push button switch, and the power operation means pushes the operation portion of the power switch by mounting the exposed panel on the main body module. 2. The call terminal according to 2.   The power switch is a slide switch that slides in a plane along the front surface of the main body module, the power operation means is concavo-convexly fitted to the operation portion of the power switch, and the exposed panel extends along the front surface of the main body module. The power supply switch is attached to the main body module by being slid in a direction to turn on, and is detached from the main body module by being slid in a direction to turn off the power switch along the front surface of the main body module. The call terminal according to claim 1 or claim 2.   The power switch is a momentary-type push button switch, and the power operation means is separate from the panel main body having a mounting structure to the main body module of the exposed panel, and the exposed panel is used as the main body module. It is operated to move with respect to the panel body between a position where the power switch operating portion is pressed and a position where the power switch is not pressed in the mounted state, and is held at least at a position where the power switch operating portion is pressed. The call terminal according to claim 1 or 2.   The power switch is a slide switch that slides in a plane along the front surface of the main body module, and the power operation means is separate from the panel main body having a structure for mounting to the main body module among the exposed panels. The power switch is fitted to the operation section of the power switch, and moved with respect to the panel body between the position where the power switch is turned on and the position where it is turned off along the front of the body module with the exposed panel mounted on the body module. The call terminal according to claim 1 or 2, wherein when the exposed panel is detached from the main body module, the power switch is moved to a position where the power switch is turned off.   On the back side of the exposed panel, there is provided connection means that is electrically connected to the connection means of the main body module by attaching the exposed panel to the main body module, and the front face of the main body module is rectangular. When the exposed panel is mounted, the front panel has a fulcrum portion that becomes a fulcrum of rotation of the exposed panel around one side of the front panel by being caught by a part of the exposed panel. 4. The telephone terminal according to claim 3, wherein the power terminal is disposed near the one side, and the power switch is disposed near the other side facing the one side on the front surface of the main body module.

Images