JPH0799716A - Mounting frame of terminal equipment for operation - Google Patents

Abstract

PURPOSE:To facilitate wiring execution by eliminating the need for connection operation for feed wiring among a plurality of terminal equipments for operation juxtaposed at one place. CONSTITUTION:A mounting frame 60 has a base frame 61 having two mounting windows 63 and being made of a metal, and holding springs 71a, 71b are fixed onto the fronts of each side piece 64, 65 of the base frame 61. Conductive springs 74 are mounted on the side piece 64 between the adjacent mounting windows 63 through an insulating base 62. The holding springs 71a, 71b are brought into contact elastically with the front sides of holding pawls protruded from the side faces of cases 1, and prevent the forward movement of the cases 1. The conductive springs 74 are brought into contact elastically with lead plates exposed from the side faces of the cases 1, and the lead plates of the cases 1 installed to the adjacent mounting windows 63 through bridging pieces are electrically connected mutually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a remote monitoring control system for monitoring and controlling a load, and is used for mounting an operating terminal equipped with a switch for operating a load on a construction surface. It is about the frame.

[0002]

2. Description of the Related Art Conventionally, a plurality of operation terminals and control terminals are connected to a signal line by a time division multiplex connection method, and operation data generated by operating a switch in an operation terminal equipped with a switch. There is provided a remote monitoring control system in which the control data is created based on the above, and the control data is transmitted to the control terminal device to which the load is connected so that the operating state of the load corresponds to the operation of the switch. .

A remote monitoring control system is shown in FIG.
It is configured as shown in. That is, the transmission processing device 81
A plurality of operation terminals 82 for monitoring the operation state of the switch SW, a plurality of control terminals 83 for controlling the load L, and the like are connected to the via a two-wire signal line Ls. Individual addresses are set in the operation terminal 82 and the control terminal 83, respectively, and the transmission processing device 81 uses the addresses to allow the operation terminal 82 and the control terminal 8 to operate.
Recognize 3 individually.

The transmission processing device 81 is connected to the signal line Ls by
A transmission signal Vs having a format as shown in FIGS. 13A and 13B is transmitted. That is, the transmission signal Vs is a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, and an address data signal for transmitting address data for individually calling the operation terminal 82 and the control terminal 83. A time slot for receiving AD, a control data signal CD for transmitting control data for controlling the load L, a checksum data signal CS for detecting a transmission error, and a return signal from the operation terminal 82 or the control terminal 83. Is a bipolar (± 24 V) time-division multiplexed signal having a signal return period WT, and data is transmitted by pulse width modulation.

In each operation terminal 82 and each control terminal 83, when the address data transmitted by the transmission signal Vs received through the signal line Ls matches the preset address data, the transmission signal Vs The control data is taken in from and the return data is returned as a current mode signal (a signal sent by short-circuiting the signal line Ls via an appropriate low impedance) in synchronization with the signal return period WT of the transmission signal Vs.

Further, the transmission processing device 81 is provided with dummy signal transmitting means and interrupt signal processing means. The dummy signal transmitting means sets the mode data signal MD to the dummy mode and sets each operation terminal 82 and control terminal 83.
A dummy transmission signal having an empty address that is not set as the address data is constantly transmitted. In addition, the interrupt signal processing means, when receiving the interrupt signal Vi as shown in FIG. 13C generated by any of the operation terminals 82, after detecting the operation terminal 82 that generated the interrupt signal. , The operation terminal 82 is accessed to return the reply data. That is, the dummy signal transmitting means always sends the dummy signal to the signal line Ls, and the interrupt signal Vi generated from the operation terminal 82 in accordance with the operation of the switch SW is synchronized with the start pulse signal ST of the dummy transmission signal. When detected, the interrupt processing means sends the transmission signal Vs in which the mode data signal MD is set to the address confirmation mode from the transmission processing device 81. In the address confirmation mode, the operation terminals 82 having a part of the common address are grouped, and the transmission signal Vs is collectively applied to each group. When the mode data signal MD receives the transmission signal Vs in the address confirmation mode, the operation terminal 82 that has generated the interrupt signal Vi is synchronized with the signal return period WT of the transmission signal Vs, and the operation terminal 8 is operated.
The address data set to 2 is returned as reply data. In this way, the transmission processing device 81 acquires the address of the operating terminal device 82 that has generated the interrupt signal Vi, and accesses the operating terminal device 82 using the acquired address to connect to the operating terminal device 82. The operation data corresponding to the operation state of the operated switch SW is received as reply data.

In the transmission processing device 81, the operation terminal device 82
Based on the operation data returned from the control data, the control data to be transmitted to the control terminal device 83 to which the load L having the corresponding relationship with the switch SW is connected is created, and the transmission signal Vs including the control data is generated. The load L is controlled by sending it to the signal line Ls and transmitting the control data to the corresponding control terminal device 83.

The operation terminal 82 can connect up to four switches SW independent of each other, and the control terminal 83 can connect up to four loads L independent of each other. It is configured. That is, the operation terminal 8 in which the same address data is set
The load number data of 2 bits is set for each of the 2 and the control terminal device 83 so that the switch SW and the load L can be identified up to a maximum of four.

By the way, the case of the conventional operating terminal 82 is for a standardized embedded wiring device so that it can be installed in the same manner as an embedded wiring device standardized in JIS or the like. The external shape and dimensions are set so that it can be attached to the mounting frame standardized in. That is, the rear portion of the case projects rearward of the mounting frame and is attached to the construction surface with the rear portion of the case being inserted into the construction surface. Further, in order to wire the signal lines Ls between the operation terminals 82, terminals for wire feeding are provided.

[0010]

In the above-mentioned conventional configuration, each operation terminal 8 is provided by sending the signal line Ls and wiring.
2 can be connected to the signal line Ls, but wiring work between the operation terminals 82 is required even when a plurality of operation terminals 82 are arranged in parallel at one place. Therefore, there is a problem that the wiring construction becomes troublesome.

An object of the present invention is to solve the above problems and to eliminate the need for wire connection work for feeding wires between a plurality of operation terminals arranged in parallel at one place, thereby performing wiring work. It is intended to provide a mounting frame for an operating terminal which is facilitated.

[0012]

According to a first aspect of the present invention, a plurality of terminals each having an address separately are connected to a transmission processing device via a two-wire signal line in a time division multiple connection system and operated. The load connected to the control terminal by transmitting the operation data generated based on the operation of the switch on the control terminal to the control terminal which has a preset correspondence relationship by the address via the transmission processing device. A mounting frame used for a remote monitoring control system for controlling a case of an operation terminal, and a metal base frame having a plurality of mounting windows into which rear parts of the cases are inserted respectively. ,
A pair of insulating bases made of insulating material and attached to the front side of the side pieces between adjacent mounting windows, and a shape made of leaf springs fixed to the base frame through the insulating bases and protruding toward the mounting window. A conductive spring equipped with bent contact pieces at both ends of the bridging piece, and a holding piece bent from a leaf spring that is fixed to the key points on both sides surrounding each mounting window and protrudes toward the mounting window. With the holding spring provided, the holding piece is elastically contacted with the front side of the holding claw protruding from the side surface of the case to prevent the case from moving forward, and electrically connected to the connecting portion to the signal line. The contact piece is elastically contacted with the lead plate that is connected and exposed on the side surface of the case, and the lead wires of the case mounted on the adjacent mounting windows are electrically connected via the conductive spring.

According to a second aspect of the invention, in the invention of the first aspect, the insulating base is provided with engaging claws protruding rearward from both end portions of the base body and projecting toward each other at the rear end portion. And a pair of holding legs having a pair of holding legs having a pair of holding legs, and a side piece between the adjacent mounting windows in the base frame is sandwiched between the holding legs. According to a third aspect of the present invention, in the second aspect of the present invention, notch grooves are formed on both side edges of the side piece between the adjacent mounting windows of the base frame, and the holding legs of the insulating base engage with each other. It is characterized in that the engaging claw abuts on the rear surface of the peripheral portion of the cutout groove in a state of being meshed with the cutout groove.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the conductive spring is fixed to the insulating base in such a manner that the fixing boss protruding from the front side of the insulating base is inserted into the conductive spring. It is characterized by In the invention of claim 5, in the invention of claim 1, a decorative plate that covers the front surface side of the base frame while leaving a part of the front surface of the case including the operation portion of the switch is attached to the base frame, and the peripheral wall of the decorative plate is attached. A mounting claw protruding in a direction substantially orthogonal to the peripheral edge of the decorative plate is formed at a key portion on the inner peripheral surface of the rear end portion, and the mounting claw is engaged with the rear surface of the peripheral portion of the base frame.

[0015]

According to the structure of the present invention, a pair of conductive springs are fixed to the side pieces between the mounting windows adjacent to each other in the base frame via the insulating bases, and the holding springs are provided on both side pieces surrounding the mounting windows. It is attached to the adjacent mounting window by contacting the conductive spring to the lead plate that is electrically connected to the connection to the signal line and exposed on the side surface of the case of the operation terminal. The lead plates of the case can be electrically connected to each other via a conductive spring, and the holding spring engages with the holding claws of the case only by attaching the case to the mounting frame, and the case mechanical It is fixed. As a result, the signal line feed wiring can be performed only by mounting the case on the mounting frame, and it is not necessary to separately perform wiring work for the feed wiring. Moreover, since the holding spring is bent so as to make elastic contact with the front surface of the holding claw protruding from the side surface of the case, the case is attached to the mounting frame by inserting the rear part of the case into the mounting window. The case can be easily attached to and detached from the frame.

According to a second aspect of the present invention, the side piece is sandwiched between a pair of flexible holding legs provided on the insulating base, and the engaging claw provided at the rear end of the holding leg is provided on the side piece. To engage
The insulating base can be easily attached to and detached from the mounting frame, and the conductive spring can be attached and detached as necessary. According to the configuration of claim 3, since the holding legs of the insulating base are engaged with each other by forming the notch grooves on the both side edges of the side piece between the adjacent mounting windows in the base frame, the side is maintained even when the insulating base is attached. There is no effect on the width dimension of the piece, and the effective width of the mounting window can be made constant regardless of the presence or absence of an insulating base.

According to the fourth aspect of the present invention, the conductive spring is fixed to the insulating base by inserting the fixing boss protruding from the front side of the insulating base into the conductive spring. It is possible to maintain the insulation between the conductive spring and the base frame while firmly coupling the conductive spring. According to the configuration of claim 5, the decorative plate is attached to the base frame by engaging the mounting claw provided at a key portion of the inner peripheral surface of the rear end of the peripheral wall of the decorative plate with the rear surface of the peripheral portion of the base frame. , It becomes easy to put on and take off the decorative plate.

[0018]

EXAMPLE The internal circuit of the operating terminal 82 is constructed as shown in FIG. That is, the signal processing unit 91 including a dedicated integrated circuit incorporating a microprocessor is provided, and the signal processing unit 91 passes through the transmission / reception unit 92 and the signal line Ls.
Connected to. The signal processing unit 91 operates based on the function data and the address data stored in the storage unit 93 formed of a non-volatile memory. The address data defines an address unique to the operation terminal device 82 and the control terminal device 83. Regarding the function data, the switches SW and the loads L are made to correspond one-to-one so that the loads L are individually controlled by operating the switches SW, or the loads L are collectively controlled by operating the switches SW. As described above, the correspondence data for selecting whether to make the switch SW and the load L correspond one-to-many, the load L is operated for a fixed time after the switch SW is operated, or the load L is delayed for a fixed time after the switch SW is operated. It includes data about timer operation such as stopping the operation of. The function data and the address data stored in the storage unit 93 are stored in the light receiving element LR.
Also, it becomes possible to rewrite by a wireless signal by infrared rays or the like from the address setting device 85 (see FIG. 12) transmitted / received by the wireless transmission / reception unit 94 including the light emitting element LE or the transmission signal Vs in the setting mode transmitted on the signal line Ls. There is. The power source of the internal circuit of the operation terminal 82 is the signal line Ls.
It is obtained by full-wave rectifying and stabilizing the above transmission signal Vs by the power supply circuit unit provided in the transmitting / receiving unit 92.

The address setter 85 sends out a wireless signal by infrared rays, and sets, confirms, and corrects the function data and the address data stored in the storage section 93. That is, when the wireless transmission / reception unit 94 receives the wireless signal from the address setting unit 85, the signal processing unit 91 operates the data in the storage unit 93 according to the operation requested by the wireless signal. When data setting is requested, the storage unit 93 is operated according to the content of the wireless signal.
Data of the wireless transmission / reception unit 94 and a reception confirmation signal indicating that the wireless signal is normally received.
Through the address setter 85. When the data confirmation is requested, the data in the storage unit 93 is read and transmitted to the address setter 85. When the data correction is requested, the required data is written in the same manner as the setting, and the written data is written. It is returned to the address setter 85.

The operation terminal 82 is provided with a pair of display lamps LD ₁ and LD ₂ each of which includes a light emitting diode which is turned on and off according to the control state of the load L associated with the operation of the switch SW, for each switch SW. , One of each pair corresponding to each switch SW is lit when the corresponding load L is operating, and the other is lit when the load L is not operating. A crystal oscillator 95 for generating a clock signal and a reset circuit 96 for resetting at the start of operation are connected to the signal processing unit 91.

As shown in FIG. 10, the circuit is mounted on a circuit board 2 which is a printed wiring board, and the circuit board 2 is mounted in a case 1. The case 1 has a rectangular parallelepiped body 10 having a small front and rear opening, a cover 20 formed in a rectangular shape having a small front and rear opening and covering the front opening of the body 10, and a front surface of the cover 20. It is formed by the makeup cover 30. The body 10 and the cover 20 engage an assembly claw (not shown) provided on the rear surface side of the cover 20 with a peripheral portion of an assembly hole 11 formed at one side edge portion of the body 10, and The assembly screw (not shown) inserted through the through hole 12 drilled in the screw 10 is screwed into a boss (not shown) projecting on the back surface of the cover 20 to be coupled. Cover 2 here
0 has a larger vertical dimension than the body 10, and the rear portion of the body 10 projects rearward from the rear surface of the cover 20.
Engaging claws (not shown) are provided on the back surface of the decorative cover 30, and the engaging claws are engaged with the peripheral portions of the engaging holes 23 formed at the four positions of the cover 20, so The makeup cover 30 is detachably connected. Makeup cover 3
A name plate 40 made of a synthetic resin sheet is attached to the front surface of 0.

A pair of upper and lower holding claws 13 are provided on each side of the body 10 so as to project therefrom. The cover 20 is provided with operation pieces 26 as operation portions of the switches SW at positions corresponding to the four switches SW which are push button switches mounted on the circuit board 2. The operation piece 26 is inserted into the operation hole 27 formed in the cover 20, and the essential parts of the peripheral portion of the operation piece 26 are continuously and integrally joined to the peripheral edge of the operation hole 27 so as to be elastically movable back and forth. ing. That is, the operation piece 2
When a pressing force is applied to 6 from the front, the switch SW can be operated, and when the pressing force applied to the operation piece 26 is released, the operation piece 26 is elasticized by a portion connecting the periphery of the operation hole 27 and the operation piece 26. Is designed to return to its original position. The front portion of the operation piece 26 projects forward of the cover 20. The cover 20 is formed with a display hole 28 into which the display lamps LD ₁ and LD ₂ corresponding to the respective switches SW are inserted in pairs, and further a light receiving element L for transmitting / receiving a wireless signal.
A signal hole 29 for exposing R and the light emitting element LE is also formed.

An insertion hole 31 through which the front portion of the operation piece 26 is inserted is formed in the decorative cover 30 so as to correspond to each operation piece 26, and further in a portion corresponding to the display hole 28 and the signal hole 29 of the cover 20. The display hole 32 and the signal hole 33 are punched. Here, the front portion of the operation piece 26 is a makeup cover 30.
Is dimensioned to project slightly from the front of the.

The nameplate 40 is formed with an operation portion 41 having a step on the peripheral portion so as to project slightly forward at a portion corresponding to the operation piece 26, and the operation portion 41 has a thickness direction so that the operation piece 26 can be operated. It has flexibility. Most of the nameplate 40 is transparent so that the characters on the name card 45 sandwiched between the operation section 41 and the operation piece 26 can be read. A band-shaped non-translucent portion 42 is formed in a portion of the nameplate 40 where the display holes 32 and the signal holes 33 are arranged, and a portion of the non-translucent portion 42 corresponding to the display hole 32 transmits a visible light. And the non-translucent portion 42 is formed.
In the above, an infrared transmitting portion 44 for transmitting infrared rays is formed in a portion corresponding to the signal hole 33.

The circuit board 2 is housed in the space formed between the body 10 and the cover 20, and the left and right side portions of the circuit board 2 are provided so as to project from the one side portion of the body 10. It is sandwiched between the locking claw 15 and the rear wall of the body 10, and the other side of the circuit board 2 is positioned by engaging the notch 16 with the assembly screw. Further, one end of a lead plate 3 made of a conductive plate spring penetrating the peripheral wall of the body 10 is connected to the circuit board 2 by soldering. Lead plate 3
A contact portion 3a bent in a substantially J shape is formed on the back side of the case 1 at the other end. A pair of lead plates 3 is provided on each of the left and right side surfaces of the case 1. A hook piece 57 provided on the connector 50 (see FIG. 1) is provided at the center of the body 10.
Coupling hole 17 for mechanically coupling the connector and the connector 50
The connection hole 18 for introducing the contactor 58, which is a conductive portion, into the case 1 is bored as a connection portion with the connector 50. A pair of the coupling hole 17 and the connection hole 18 are provided and formed in an arc shape. The connector 50 is used to connect the signal line Ls to the internal circuit of the case 1, and the pair of lead plates 3 exposed on the left and right side surfaces of the case 1 are connected to the signal line Ls via the conductive pattern of the circuit board 2. It is electrically connected.

The case 1 formed as described above is shown in FIG.
As shown in FIG. Mounting frame 60
As shown in FIG. 2, has a metal base frame 61 having two mounting windows 63, and a portion of the front surface of the base frame 61 corresponding to both side pieces 64 and 65 surrounding the mounting window 63 is provided. The holding springs 71a and 71b are fixed. Holding spring 71a,
71b is a leaf spring, and in the holding spring 71a fixed to the side piece 64 between the adjacent mounting windows 63, the holding pieces 73 are continuously and integrally provided at both ends of the fixed piece 72.
In the holding spring 71b fixed to the side pieces 65 at both ends, the holding piece 73 is continuously and integrally provided at one end of the fixed piece 72. The holding piece 73 is bent in a V shape protruding toward the inside of the mounting window 63. Here, the holding springs 71a, 7
The fixing piece 72 of 1b is fixed to the base frame 61 by fixing means such as rivets or spot welding.

A side piece 64 between the adjacent mounting windows 63 is also provided.
A conductive spring 74 is removably attached to the holding spring 71a at a position different from the holding spring 71a via the insulating base 62. Insulation base 6
2 is made of synthetic resin, and is provided with a pair of flexible holding legs 62b that project rearward from both ends of the base body 62a, and project toward the rear ends of the holding legs 62b in a direction toward each other. An engaging claw 62c is provided so as to project. Further, a holding groove 62d running in the width direction of the side piece 64 is formed on the front surface of the base body 62a, and a fixing boss 62e is provided at the center of the bottom surface of the holding groove 62d. The conductive spring 74 is formed of a metal leaf spring having conductivity in a shape including the contact pieces 76 at both ends of the bridging piece 75, and the contact piece 76 is bent in a dogleg shape protruding inside the attachment window 63. There is. The conductive spring 74 connects the bridging piece 75 to the holding groove 62d of the insulating base 62.
The fixing boss 62e is inserted into the bridging piece 75 while being fixed to the insulating base 62 by a method such as heat staking. Insulating base 6 on side piece 64 of base frame 61
A notch groove 66 with which the holding leg 62b meshes is formed on both side edges of the portion where the 2 is attached. When the holding leg 62b is pressed against the base frame 61 in accordance with the notch groove 66, the engaging claw 6
2c rides over the base frame 61 and engages with the rear surface of the base frame 61. In this way, the insulating base 62 is attached to the base frame 6
It can be easily attached only by pressing it against 1. Further, since the notch groove 66 is provided in the base frame 61, the insulating base 62 can be easily positioned in the base frame 61 and the notch groove 66 and When the engaging claws 62c are in mesh with each other, the rear surface of the holding leg 62b and the opening edge of the notch groove 66 can be made substantially flush with each other, and the insulating base 62 can be mounted without affecting the effective width of the mounting window 63. It can be installed.

In the above structure, the holding springs 71a and 71b are fixed to the base frame 61, and the conductive spring 74 together with the insulating base 62 is attachable to and detachable from the base frame 61.
However, as shown in FIG. 8, when the case 1 is fitted to the mounting window 63 of the mounting frame 60 and mounted from the front and the holding claws 13 pass over the bent portion of the holding piece 73, as shown in FIG. The holding piece 73 makes elastic contact with the front surface of the holding claw 13 so that the case 1
Will block the forward movement of. In this state, the rear surface of the cover 20 forming the case 1 contacts the front surface of the peripheral portion of the mounting window 63, and the case 1 is prevented from dropping rearward with respect to the mounting frame 60. Further, when the case 1 is attached to the mounting frame 60, the rear surface of the case 1 has the mounting frame 6
The dimensional relationship is set so as to be substantially flush with the back surface of 0 or slightly forward of the back surface of the mounting frame 60. Further, in this state, as shown in FIG. 7B, the contact piece 7 is attached to the contact portion 3a of the lead plate 3 exposed on the side surface of the case 1.
6 is elastically contacted, and the lead plates 3 of the two cases 1 are electrically connected to each other via the holding spring 70. Only by attaching the case 1 to the mounting frame 60, separate wiring is performed. The signal line can be sent and wired without the need.

Above and below the respective mounting windows 63 of the mounting frame 60, a pair of left and right elongated mounting holes 67 through which box screws are inserted are formed in the base frame 61. The distance between the upper and lower mounting holes 67 is set so that a box screw screwed into the tongue piece 4a of the embedding box 4 used when constructing the embedding-type wiring device standardized by JIS or the like can be inserted. Has been done. That is, the interval between the upper and lower mounting holes 67 is set to be equal to that of the mounting frame for three large polygons capable of mounting up to three embedded wiring devices having standardized unit dimensions. As a result, the mounting frame 60 can be attached to the ready-made embedded box 4 for wiring equipment.

As shown in FIGS. 3 to 6, the decorative plate 5 is attached to the mounting frame 60. That is, the decorative plate 5 includes the middle frame 51 having the attachment claws 53 that engage with the upper and lower peripheral portions of the attachment frame 60, and the middle frame 51.
And an outer frame 52 having a claw (not shown) removably coupled to the outer frame 52. The mounting claw 53 is provided so as to project from the inner peripheral surface of the rear end portion of the peripheral wall of the middle frame 51. As shown in FIG. 4, the decorative plate 5 is detachably attached to the mounting frame 60 by engaging the mounting claw 53 with the peripheral portion of the mounting frame 60.

The outer frame 52 has an opening window 54 through which the front portion of the case 1 can be inserted. Therefore, it is possible to expose the portion of the operation piece 26 that exerts a pressing force through the exposure window 54 of the decorative plate 5. In the above embodiment, the two cases 1 are attached to the attachment frame 60, but the technical idea of the present invention can be applied as long as two or more cases 1 are attached. Further, as shown in FIG. 9, in the mounting frame 60 having one mounting window 63, the holding spring 70 is not provided with the conductive spring 74.
By providing only b, the case 1 can be easily attached to and detached from the mounting frame 60 as in the above embodiment.

[0032]

According to the first aspect of the present invention, a pair of conductive springs are fixed to the side pieces between the adjacent mounting windows in the base frame via the insulating base, and the side springs surrounding the respective mounting windows are respectively fixed. Since the holding spring is fixed, the conductive spring is brought into contact with the lead plate that is electrically connected to the connection portion to the signal line and exposed on the side surface of the case of the operation terminal, so that the adjacent mounting window The lead plates of the case mounted on the can be electrically connected to each other via the conductive spring, and the holding spring is engaged with the holding claw of the case only by attaching the case to the mounting frame. Mechanical fixation is made. As a result, there is an advantage that the signal line feed wiring can be performed only by mounting the case on the mounting frame, and it is not necessary to separately perform wiring work for the feed wiring. Moreover, since the holding spring is bent so as to elastically contact the front surface of the holding claw protruding from the side surface of the case, the case is attached to the mounting frame by inserting the rear part of the case into the mounting window, and The effect is that the case can be easily attached and detached.

According to the second aspect of the present invention, the side piece is sandwiched between a pair of flexible holding legs provided on the insulating base, and the engaging claw provided at the rear end of the holding leg is provided on the side piece. Since the insulating base can be easily attached to and detached from the mounting frame, there is an advantage that the conductive spring can be attached and detached as necessary. According to the third aspect of the present invention, since the notch grooves are formed in both side edges of the side piece between the adjacent mounting windows in the base frame to engage the respective holding legs of the insulating base, the side even when the insulating base is attached. There is an effect that the width dimension of the piece is not affected and the effective width of the mounting window can be made constant regardless of the presence or absence of the insulating base.

According to the fourth aspect of the invention, since the conductive spring is fixed to the insulating base by inserting the fixing boss protruding from the front surface of the insulating base into the conductive spring, the insulating base and the conductive spring are fixed. There is an effect that it is possible to maintain insulation between the conductive spring and the base frame while firmly connecting and. According to the fifth aspect of the present invention, the decorative plate is attached to the base frame by engaging the mounting claws provided at important points on the inner peripheral surface of the rear end portion of the peripheral wall of the decorative plate with the rear surface of the peripheral portion of the base frame. The advantage is that the decorative plate can be easily attached and detached.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment.

FIG. 2 is an exploded perspective view of the embodiment.

FIG. 3 is a front view showing a relationship between a mounting frame and a middle frame in the embodiment.

FIG. 4 is a rear view showing the relationship between the mounting frame and the middle frame in the embodiment.

FIG. 5 is a vertical cross-sectional view showing a usage state of the embodiment.

FIG. 6 is a cross-sectional view showing a usage state of the embodiment.

FIG. 7 shows an embodiment, (a) is a sectional view showing a relationship between a holding piece and a holding claw, and (b) is a sectional view showing a relationship between a contact piece and a lead plate.

FIG. 8 is a diagram illustrating the operation of the embodiment.

FIG. 9 is a front view showing an application example.

FIG. 10 is an exploded perspective view showing an operating terminal used in the embodiment.

FIG. 11 is a block circuit diagram of an operating terminal used in the embodiment.

FIG. 12 is a schematic configuration diagram of a remote monitoring control system.

FIG. 13 is an operation explanatory diagram illustrating a transmission signal used in the remote monitoring control system.

[Explanation of symbols]

 1 Case 3 Lead Plate 5 Decorative Plate 13 Holding Claw 53 Mounting Claw 60 Mounting Frame 61 Base Frame 62 Insulation Base 62a Base Main Body 62b Holding Leg 62c Engaging Claw 62e Fixing Boss 63 Mounting Window 64 Side Piece 65 Side Piece 66 Notch Groove 71a Holding spring 71b Holding spring 73 Holding piece 74 Conductive spring 75 Bridging piece 76 Contact piece 81 Transmission processing device 82 Terminal for operation 83 Terminal for control L Load Ls Signal line SW switch

Claims (5)

[Claims] 1. A plurality of terminals each having an address separately are connected to a transmission processing device through a two-wire signal line in a time division multiple connection system, and based on operation of a switch on an operation terminal. Used in a remote monitoring control system that controls the load connected to the control terminal by transmitting the generated operation data to the control terminal in which the correspondence by address is preset through the transmission processing device, Between the mounting frame to which the case of the operation terminal is attached, the metal base frame having a plurality of mounting windows into which the rear parts of the cases are inserted, and the adjacent mounting windows made of an insulating material. A pair of insulating bases attached to the front side of the side pieces, and a contact piece made of a leaf spring, which is fixed to the base frame through each insulating base and bent into a shape protruding toward the mounting window, is a bridging piece. The conductive strips on both ends of And a holding spring, which is made of a leaf spring and is fixed to the important part of both side pieces surrounding each mounting window, and has a holding piece bent to a shape protruding toward the mounting window, and is provided on the side surface of the case. With the holding piece elastically contacting the front side of the holding claw to prevent the case from moving forward, the contact piece is elastically connected to the connection part to the signal line and exposed to the lead plate exposed on the side surface of the case. A mounting frame for an operation terminal, wherein lead wires of a case mounted in contact with and adjacent to each other are electrically connected via a conductive spring. 2. The insulating base includes a pair of flexible holding legs having rear end portions with engaging claws protruding rearward from both ends of the base body and projecting toward each other. 2. The mounting frame for an operating terminal according to claim 1, wherein the engaging claw engages with the rear surface of the side piece in such a manner that the side piece between the adjacent mounting windows is sandwiched between the holding legs. 3. A notch groove for engaging each holding leg of the insulating base is formed on both side edges of a side piece between adjacent mounting windows in the base frame, and the notch groove is formed in a state where the holding leg is engaged with the notch groove. The engaging claws are in contact with the rear surface of the peripheral portion of the blade.
Mounting frame for the described operation terminal. 4. The operation spring according to claim 1, wherein the conductive spring is fixed to the insulating base by inserting a fixing boss projecting from the front side of the insulating base into the conductive spring. Attachment frame for terminals. 5. A decorative plate that covers the front surface side of the base frame, leaving a part of the front surface of the case including the operation part of the switch, is attached to the base frame, and the decorative plate of the inner peripheral surface of the rear end of the peripheral wall of the decorative plate is attached. 2. The operation terminal device according to claim 1, wherein a mounting claw protruding in a direction substantially orthogonal to a peripheral edge of the decorative plate is formed at a key portion, and the mounting claw is engaged with a rear surface of a peripheral portion of the base frame. Mounting frame.