JP3242178B2 - Connector for connecting external wires to wiring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external electric wire connection for a wiring device mainly used for connecting a signal line as an external electric wire to an operation terminal provided with a switch for operating a load in a remote monitoring control system. Related to the connector.

[0002]

2. Description of the Related Art The present inventors have previously proposed a connector having a structure shown in FIG. 34 as a connector for connecting a signal line to an operation terminal used in a remote monitoring and control system (Japanese Patent Application No. Hei. -288287). That is, in this connector, a connector body 52 is connected to a connector cover 52 to form a cylindrical connector body, and a quick connection terminal 53 including a terminal plate 56, a locking spring 57, and a release button 58 is provided in the connector body. And the contact 54 are provided. The connector cover 52 has a hooking projection 55 protruding therefrom. When the connector body is rotated in a state where the hooking projection 55 is inserted into a coupling hole formed in a case of an operation terminal as a wiring device, the connector body is turned into a case. Is to be combined. In a state where the connector main body is connected to the case, the contactor 54 comes into contact with the conductive pattern of the circuit board mounted in the case, and the signal wire as an external electric wire connected to the quick connection terminal 53 is connected to the quick connection terminal 53. And contact 54
Through the conductive pattern.

[0003]

SUMMARY OF THE INVENTION The connector 50 described above.
In this case, the connector body is attached to and detached from the case by rotating it with respect to the case.However, there is no part that serves as a knob when rotating, and the cylindrical connector body is attached to and detached from the case. When rotating, there is a problem that a finger slips and work is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a connector for connecting an external electric wire to a wiring device which can be easily attached to and detached from a case. is there.

[0005]

According to the present invention, in order to attain the above object, a plurality of connecting holes respectively inserted into a plurality of connecting holes formed along an arc defined on one surface of a case of a wiring device. A cylindrical connector comprising: a plurality of hooking protrusions; a contact inserted into a connection hole penetrating the case at a position different from the coupling hole; and a terminal electrically connected to the contact and connected to an external electric wire. When the hook is inserted into the coupling hole and the connector body is rotated in the circumferential direction of the arc, the hooking projection is engaged with the coupling hole, and the connector body is coupled to the case and housed in the case. Contacts the hooks so that the contacts make electrical contact with the conductive patterns on the circuit board
The connector ribs are arranged, and convex ribs parallel to the center line of the connector main body are protrudingly provided at important points on the outer peripheral surface of the peripheral wall of the connector main body.

It is desirable to form a ridge on the connector body that protrudes toward the case from the center along the periphery of the surface facing the case.

[0007]

According to the present invention, a convex rib parallel to the center line of the connector main body is protruded at a key point on the outer peripheral surface of the peripheral wall of the connector main body which is detachably mounted on the case by being rotated with respect to the case of the wiring device. Therefore, it is possible to prevent the finger from slipping when the connector main body is rotated to be attached to or detached from the case, by the convex rib, and as a result, the operation of attaching / detaching the connector main body to / from the case becomes easy.

Further, in the case where the projecting ridge is formed along the periphery of the surface of the connector body facing the case, the leading end surface of the projecting ridge is formed with the hooking projection of the connector body engaged with the coupling hole of the case. Therefore, the connector body and the case can be brought into close contact with each other without any gap.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In this embodiment, an operating terminal of a remote monitoring and control system will be described as a wiring device. In other words, the remote monitoring and control system connects a plurality of operation terminals and control terminals to signal lines in a time-division multiple access system, and stores operation data generated by operating switches provided on the operation terminals. This is a system in which the control data is generated based on the control data, and the control data is transmitted to the control terminal connected to the load so that the operation state of the load corresponds to the operation of the switch. It is configured as follows. Here, the central processing unit 81 includes a plurality of operation terminals 82 for monitoring the operation state of the switch SW, and a load L.
Are connected via a two-wire signal line Ls. In addition, the operation terminal device 82
An individual address is set for each of the control terminal 83 and the control terminal 83, and the central processing unit 81 uses this address to individually recognize the operation terminal 82 and the control terminal 83.

The central processing unit 81 controls the signal line Ls
A transmission signal Vs having a format as shown in FIGS. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, a mode data signal MD indicating a signal mode, and an address data signal transmitting address data for individually calling the operation terminal 82 and the control terminal 83. 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, a time slot for receiving a return signal from the operation terminal 82 or the control terminal 83 Is a multipole (± 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, if the address data transmitted by the transmission signal Vs received via the signal line Ls matches the preset address data, the transmission signal Vs And return control data as a current mode signal (a signal transmitted 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.

The central processing unit 81 is provided with a dummy signal transmitting means and an interrupt signal processing means. The dummy signal transmitting means always sets the mode data signal MD in the dummy mode, and always transmits a dummy transmission signal provided with an empty address not set in each of the operation terminal 82 and the control terminal 83 as address data. Further, when the interrupt signal processing means receives the interrupt signal Vi as shown in FIG. 33C generated by any of the operation terminals 82, the interrupt signal processing means detects the operation terminal 82 which has generated the interrupt signal. The access terminal 82 is accessed to return the reply data. That is, the dummy signal is normally transmitted to the signal line Ls by the dummy signal transmitting means, and the switch SW
When the interrupt signal Vi generated from the operation terminal device 82 is detected in synchronization with the start pulse signal ST of the dummy transmission signal in response to the operation, the interrupt processing means changes the mode data signal MD from the central processing unit 81 to the address confirmation mode. The transmitted transmission signal Vs is transmitted. In the address confirmation mode, the operation terminals 82 having a part of the common address are grouped, and the transmission signal Vs is transmitted collectively for each group. When receiving the transmission signal Vs in which the mode data signal MD is in the address confirmation mode, the operation terminal 82 that has generated the interrupt signal Vi synchronizes with the signal return period WT of the transmission signal Vs.
The address data set in 2 is returned as reply data. In this way, the central processing unit 81 acquires the address of the operation terminal 82 that has generated the interrupt signal Vi, and accesses the operation terminal 82 using the acquired address, thereby connecting to the operation terminal 82. Operation data corresponding to the operated state of the switch SW is received as return data.

In the central processing unit 81, an operation terminal 82
Based on the operation data returned from, the control data to be transmitted to the control terminal 83 connected to the load L whose correspondence with the switch SW is set in advance is created, and the transmission signal Vs including the control data is generated. The data is transmitted to the signal line Ls, and the control data is transmitted to the corresponding control terminal 83 to control the load L.

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

The internal circuit of the operation terminal 82 is configured as shown in FIG. That is, a signal processing unit 91 including a dedicated integrated circuit with a built-in microprocessor is provided.
Connected to. The signal processing section 91 operates based on the function data and the address data stored in the storage section 93 formed of a nonvolatile memory. The address data defines an address unique to the operation terminal 82 and the control terminal 83. In the function data, the switches SW and the loads L are made to correspond one-on-one such that the loads L are individually controlled by the operations of the switches SW, or the loads L are collectively controlled by the operations of the switches SW. Of the switch SW and the load L in a one-to-many correspondence, 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. This includes data on timer operations such as stopping the operation of the timer. The function data and address data stored in the storage unit 93 are stored in the light receiving element LR.
It can be rewritten by a wireless signal such as infrared rays from an address setting device 85 (see FIG. 32) transmitted / received by a wireless transmitting / receiving section 94 having a light emitting element LE or a setting mode transmission signal Vs transmitted through a signal line Ls. I have. The power supply of the internal circuit of the operation terminal 82 is a signal line Ls
The above transmission signal Vs is obtained by full-wave rectification and stabilization by the power supply circuit section provided in the transmission / reception section 92.

The address setting unit 85 transmits a wireless signal by infrared rays, and sets, confirms, and corrects function data and address data stored in the storage unit 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 in accordance with the operation requested by the wireless signal. When the data setting is requested, the storage unit 93 is set in accordance with the content of the wireless signal.
Is rewritten, and a reception confirmation signal indicating that the wireless signal has been normally received is transmitted to the wireless transmission / reception unit 9.
4 to the address setter 85. When data confirmation is requested, the data in the storage unit 93 is read and transmitted to the address setting unit 85. When data correction is requested, necessary data is written in the same manner as in the setting, and the written data is set in the address setting. To the device 85.

The operation terminal 82 has a pair of display lamps LD ₁ and LD ₂ each composed of a light emitting diode which is turned on / off in accordance with the control state of the load L accompanying the operation of the switch SW. , One of the pair corresponding to the switch SW is turned on when the corresponding load L is operated, and the other is turned on when the load L is not operated. The signal processing unit 91 includes a crystal oscillator 95 for generating a clock signal and a reset circuit 96 for resetting at the start of operation.
Is connected.

As shown in FIG. 21, the circuit is mounted on a circuit board 2 which is a printed wiring board, and the circuit board 2 is housed in a case 1. The case 1 has a rectangular parallelepiped body 10 having a small thickness before and after the front opening, a rectangular solid having a small thickness before and after the rear opening, and a cover 20 covering the front opening of the body 10, and covering the front of the cover 20. It is formed by the decorative cover 30. The body 10 and the cover 20 are assembled with an assembling claw 21 protruding from the rear side of the cover 20.
26 (see FIG. 26) is engaged with the periphery of an assembling hole 11 formed on one side edge of the body 10, and covers an assembling screw (not shown) inserted through a through hole 12 formed in the body 10. 20 is screwed into a boss 22 protruding from the back surface of the base 20. Here, as shown in FIGS. 23 to 25, the cover 12 has a larger vertical dimension than the body 10, and the rear of the body 10 is
2 protrudes rearward from the rear surface. Engaging claws (not shown) protrude from 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 four places of the cover 20, whereby the covering claw is engaged with the cover 20. Thus, the decorative cover 30 is detachably connected. A nameplate 40 made of a synthetic resin sheet is attached to the front surface of the decorative cover 30.

As shown in FIG. 24, a pair of upper and lower mounting claws 13 protrude from the right side surface of the body 10, and a through hole 14 (see FIG. 26) penetrating back and forth is formed in the upper and lower central portion on the left side. Mounting tongue piece 2 formed continuously and integrally with cover 20
4 is inserted through the through hole 14. At the tip of the mounting tongue piece 24, an engaging claw 25 is formed which projects laterally at the same position as the mounting claw 13 in the front-rear direction of the case 1. Therefore, as shown in FIG. 25, the engagement claws 25 project from the left side surface of the body 10. At the base of the mounting tongue piece 24 in the cover 20, there is formed a release hole 35 that penetrates the cover 20 back and forth. If the tip of a driver is inserted into the release hole 35, the engaging claw 25 approaches the case 1. Mounting tongue piece 24
Can be bent.

An operation piece 26 as an operation part of the switch SW is provided on the cover 20 at a position corresponding to each of the four switches SW which are push button switches mounted on the circuit board 2.
Is provided. The operation piece 26 is inserted into an operation hole 27 formed in the cover 20, and a key portion of the periphery of the operation piece 26 is continuously and integrally connected to the periphery of the operation hole 27 so as to be able to move back and forth elastically. ing. That is, when a pressing force is applied to the operation piece 26 from the front (from above in FIG. 21), the switch S
W can be operated, and when the pressing force applied to the operation piece 26 is released, the operation piece 26 returns to the original position by the elasticity of the portion connecting the periphery of the operation hole 27 and the operation piece 26. . The front portion of the operation piece 26 protrudes forward from the cover 20. The cover 20 is formed with a display hole 28 for inserting a pair of display lamps LD ₁ and LD ₂ corresponding to each switch SW, and further a signal hole 2 for exposing a light receiving element LR for transmitting and receiving a wireless signal and a light emitting element LE.
9 are also formed.

In the decorative cover 30, an insertion hole 31 through which the front part of the operation piece 26 is inserted is perforated corresponding to each operation piece 26, and further, at a portion corresponding to the display hole 28 and the signal hole 29 of the cover 20. , A display hole 32 and a signal hole 33 are formed. Here, the front of the operation piece 26 is a decorative cover 30.
Dimensions are set so as to slightly protrude from the front surface of the. When the decorative cover 30 is attached to the cover 20, the removal hole 35 is covered by the decorative cover 30.

The nameplate 40 is provided with an operation portion 41 having a step on its periphery so as to protrude slightly forward at a portion corresponding to the operation piece 26. The operation portion 41 is formed in a thickness direction so that the operation piece 26 can be operated. It has flexibility. The nameplate 40 is mostly transparent so that characters on a nameplate sandwiched between the operation unit 41 and the operation piece 26 can be read. As shown in FIG. 21, a band-shaped non-light-transmitting 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 visible light beam is formed in a portion of the non-light-transmitting portion 42 corresponding to the display hole 32. A light-transmitting portion 43 for transmitting infrared light is formed, and an infrared transmitting portion 44 for transmitting infrared light is formed in a portion corresponding to the signal hole 33 in the non-light-transmitting portion 42.

The circuit board 2 is accommodated in a space formed between the body 10 and the cover 20. One left and right side of the circuit board 2 protrudes from one side of the body 10. It is clamped between the holding claw 15 and the rear wall of the body 10 (FIG. 2).
6), the other side of the circuit board 2 is positioned by engaging the notch 16 with the assembly screw. As shown in FIG. 23, a connector 5 to be described later is provided at the center of the body 10.
0 is mechanically coupled with the coupling hole 17 and the connector 5
A connection hole 18 for introducing the conductive portion 0 into the case 1 is formed as a connection portion with the connector 50. Coupling hole 17
The connection hole 18 is provided in a pair and formed in an arc shape.
Further, a lock groove 19 is formed on the outer surface of the case 1 on substantially the same circumference as each of the coupling holes 17 so as to be continuous with the coupling holes 17. Connector 50 is used to connect signal line Ls to the internal circuit of case 1.

The case 1 formed as described above corresponds to FIG.
As shown in FIG. 7, it is attached to a metal mounting frame 60. The attachment frame 60 shown in this embodiment has two attachment windows 61 as shown in FIG. 27, and the case 1 can be attached to each of the attachment windows 61. A first receiving portion 62 is formed on the right side of each mounting window 61 so that the mounting claw 13 provided on the case 1 can be engaged.
A second receiving portion 63 is formed, which is engageable with the second receiving portion 63. As shown in FIGS. 28 and 30, the first receiving portion 62 and the second receiving portion 63 are formed by punching a part of the mounting frame 60 forward, and the mounting claws 13 are inserted into the first receiving portion 62. When the engaging claw 25 is inserted into the second receiving portion 63, the case 1 is fixed to the mounting frame 60 by the rear surface of the cover 20 abutting against the front surface of the mounting frame 60.
When the case 1 is attached to the mounting frame 60, the rear surface of the case 1 is substantially flush with the rear surface of the mounting frame 60 or the mounting frame 6.
The dimensional relationship is set so as to be located slightly forward of the back of the zero. When the case 1 attached to the mounting frame 60 is detached from the mounting frame 60, if a tool 36 such as the tip of a driver is inserted into the removal hole 35, the mounting tongue piece 24 bends and the engaging claw 25 and the The engagement state with the second receiving portion 63 is released.

On the upper and lower sides of each mounting window 61 of the mounting frame 60, a pair of left and right long elongated mounting holes 64 into which box screws are respectively inserted are formed. The distance between the upper mounting hole 64 and the lower mounting hole 64 is the embedding box 4 (see FIG. 17) used at the time of installation of the embedding wiring device standardized by JIS standards or the like.
It is set so that a box screw to be screwed into the tongue piece 4a can be inserted. That is, the upper and lower mounting holes 6
The spacing of 4 is set equal to the mounting frame for three large squares that can mount up to three embedded wiring devices of standardized unit dimensions. As a result, the mounting frame 61 can be attached to the ready-made embedding box 4 for wiring equipment.

Further, plate screw holes 65 into which plate screws are screwed are formed above and below each of the mounting windows 61 of the mounting frame 60, so that the decorative plate 5 used when constructing a standardized embedded wiring device is formed. Can be attached to the mounting frame 60. That is, as shown in FIG. 17, the decorative plate 5 has a through-hole 5c through which a plate screw screwed into the plate screw hole 65 is inserted, and is connected to the mounting frame 60 by the plate screw. And an outer frame 5b having claws (not shown) detachable from the frame 5a. An exposed window 5d through which the front part of the case 1 can be inserted is opened in the outer frame 5b. Therefore, the portion where the pressing force acts on the operation piece 26 can be exposed through the exposure window 5d of the decorative plate 5. in this way,
Since the ready-made decorative plate 5 used for the embedded wiring device is attached to the mounting frame 60, not only the embedding box 4 but also the decorative plate 5 can be used. It is possible to suppress an increase in the manufacturing cost of the members required for the construction.

A pair of hook holes 66 are also formed above and below each mounting window 61 in the mounting frame 60, and a peripheral portion of a mounting hole formed in a wall panel or the like is sandwiched between the mounting frame 60 and the mounting hole. With one end of the clip fitting inserted into the hook hole 66,
By tightening the attraction screw screwed into the clamp through the mounting hole 64, the end of the clamp is attached to the mounting frame 6.
It can be made to approach zero. further,
Ribs 67 are punched out at key points around the periphery of the mounting frame 60, and projecting pieces 68 projecting forward are formed on both upper and lower edges of the mounting window 61 as shown in FIG.
8, the mounting frame 60 is reinforced.

As shown in FIGS. 1 to 7, the connector 50 has a bottomed cylindrical connector body 51 having one open bottom surface, and a connector cover fitted so as to close the opening surface of the connector body 51. 52, a quick connection terminal 53 for connecting the signal line Ls, and a contact 54 for contacting the conductive pattern of the circuit board 2 mounted on the case 1 in the internal space of the connector body formed by coupling the connector 52 to the circuit board 2. It has a configuration provided. The connector body 51 and the connector cover 52 are connected to the assembly holes 52e (see FIG. 9) formed on the periphery of the connector cover 52 by assembling claws 51e (see FIG. 8) projecting from two places around the opening periphery of the connector body 51. By being engaged, they are integrally joined. Here, the assembly claw 51e is engaged with a step formed inside the assembly hole 52e, and the assembly claw 5e is engaged.
1e is prevented from protruding outside.

Front surface of connector cover 52 (upper surface in FIG. 1)
Is provided with a pair of hooking projections 55 which are inserted into coupling holes 17 formed in the body 10. That is, the coupling hole 1
As shown in FIG. 19, a wide introduction portion 17a is formed on one end side in the circumferential direction, and a narrow hook portion 1 is formed on the other end.
7b, and the hooking projection 55 is
a hook groove 55a into which the peripheral portion of the hooking portion 17b is introduced when the connector 50 is rotated after the hooking projection 55 is introduced into the introduction portion 17a and the connector 50 is rotated. have. Therefore, when the connector 50 is connected to the case 1 as shown in FIG. 10A and the connector 50 is rotated as shown in FIG. 10B, the peripheral portion of the hook 17b is engaged with the hook groove 55a. The connector 50 is prevented from falling out of the case 1.

On the other hand, a positioning hole 52a is formed on the connector cover 52 on substantially the same circumference as the hooking projection 55, and the positioning projection 51a projecting from the opening surface of the connector body 51 is fitted into the positioning hole 52a. . A lock projection 51b is provided on the distal end surface of the positioning projection 51a. As shown in FIG. 6, the lock protrusion 51 b protrudes from the front surface of the connector 50, and the protrusion dimension is set smaller than the hook protrusion 55. The lock projection 51b is inserted into one end of the lock groove 19 formed continuously with the coupling hole 17 when the hooking projection 55 is introduced into the introduction portion 17a of the coupling groove 17 (see FIG. 10A). When the connector 50 is rotated, the connector 50 is pressed against the back surface of the case 1 so that the connector 50 is not easily rotated with respect to the case 1 (FIG. 10).
(B)).

Further, the front surface of the connector cover 52 (FIG. 1)
As shown in FIGS. 1, 2, 9 and the like, an annular ridge 52f projecting slightly forward from the central portion
Are protruding. Due to the presence of such a ridge 52f, the distal end surface of the ridge 52f can be brought into close contact with the case 1 in a state where the connector 50 is connected to the case 1, so that the case 1 does not rattle. The connector 50 can be connected.

As shown in FIGS. 3, 5 and the like, flat portions 51f parallel to the center line of the connector body 51 are formed at two places on the outer peripheral surface of the peripheral wall of the connector body 51. One convex rib 51g running in the direction along the center line of the connector body 51 is provided in a protruding manner. Accordingly, when the connector 50 is rotated with respect to the case 1 as described above, if the finger is applied to the flat portion 51f, the finger is prevented from slipping by the flat portion 51f and the convex rib 51g, and the connector 50 is fixed to the case. It is easy to rotate with respect to one.

Connector body 51 and connector cover 52
The quick-connecting terminal 53 provided in the space between the terminal plate 56 and a terminal plate 56 in which a pair of terminal frames 56a are connected via a connecting piece 56b as shown in FIGS. Locking spring 57 disposed between a pair of
1 is guided by a guide groove 51c formed in the front-rear direction (vertical direction in FIG. 1) in the connector body 51.
And a release button 58 as shown in FIG. Lock spring 5
7 has a well-known shape in which both ends of a band-shaped leaf spring are bent to form a contact piece 57a and a locking piece 57b, and the introduced electric wire is placed between the contact piece 57a and the terminal frame 56a. While holding the electrical contact state by pinching, the lock piece 5
The leading edge of the wire 7b is cut into the wire to prevent the wire from coming off. The release button 58 is connected to the terminal plate 5.
6, a main plate 5 disposed between a pair of terminal frames 56a
8a is formed in a shape provided with pressing projections 58b that contact the locking pieces 57b on both side surfaces, and further, a rear edge of the main plate 58a (FIG. 1).
An operation button 58c protrudes from the lower edge). Therefore, when the operation button 58c is pressed forward, a pressing force can be applied to the locking piece 57b via the pressing projection 58b, and the locking piece 57b bends away from the wire to easily pull out the wire. You can do it. The operation of this type of quick connection terminal 53 is well known.

As shown in FIG. 3, an electric wire insertion hole 59 corresponding to each locking spring 57 is formed on the rear surface of the connector body 51, and an operation button 58c of the release button 58 is exposed. Therefore, the signal line Ls is connected to the connector 50.
When a wire is inserted into the wire insertion hole 59, a wire serving as the signal line Ls is prevented from coming off by the locking spring 57 so that the wire can be easily connected. On the other hand, when the electric wire serving as the signal line Ls is disconnected from the connector 50, the operation button 58c
You can pull out the wire while pressing. Here, the signal line L
Since s is sequentially sent and wired, the wire insertion hole 59
Are provided in two sets, for a total of four holes. The operation button 58c of the release button 58 is
Each is provided. Inspection holes 51d are also formed on the rear surface of the connector body 51 so as to correspond to the lock springs 57.

As shown in FIG. 16, the contact 54 is provided with a roof-shaped contact portion 54b at one end of a main body 54a having a substantially U-shaped cross section, and a spring portion 54c at the other end of the main body 54a. Is formed, and a fixing piece 54d is cut and raised at one position of the main body 54a. The spring portion 54c is formed in a shape in which a substantially triangular portion bulging away from the side surface of the main body 54a and a portion substantially parallel to the side surface of the main body 54a are continuous. The contact 54 is shown in FIG.
As shown in the figure, the main body 54a, the spring portion 54c and the fixing piece 54
and d electrically and mechanically couple to the terminal plate 56 by surrounding the connecting piece 56b of the terminal plate 56.
Further, the contact 54 is positioned by inserting the distal end of a guide rib 51d protruding from the inner peripheral surface of the connector body 51 into the main body 54a, and protruding from the peripheral edge of the positioning hole 52a of the connector cover 52. The contact 54 is also positioned by the contact of the positioning rib 52b with the spring portion 54c.

The contact portion 54b of the contact 54 projects through a drawing hole 52c formed in the connector cover 52, and is introduced into the case 1 through the connection hole 18 of the case 1 when the connector 50 is connected to the case 1. It comes into contact with the conductive pattern formed on the circuit board 2. Accordingly, by connecting an electric wire serving as the signal line Ls to the quick connection terminal 53 of the connector 50 and bringing the contact 54 of the connector 50 into contact with the circuit board 2, the signal line Ls which is an external electric wire is connected to the case via the connector 50. It can be connected to the circuit in 1. The conductive pattern of the circuit board 2 that contacts the contact 54 is connected to the lead plate 3. That is, each pair of the left and right lead plates 3 of the case 1 is connected to the signal line Ls. Here, since the spring portion 54c is formed on the contact 54, when the contact portion 54b contacts the circuit board 2, the contact portion 54b is pushed into the connector body, and the spring portion 54c is formed.
Is bent to obtain a contact pressure.

[0037]

As described above, according to the present invention, the convex rib parallel to the center line of the connector main body is provided at a key point on the outer peripheral surface of the peripheral wall of the connector main body which is attached to and detached from the case by rotating with respect to the case of the wiring device. The convex rib prevents the finger from slipping due to the convex rib when rotating the connector body for attaching and detaching to and from the case. Has the advantage of becoming

Further, in the case where the protrusion is formed along the peripheral portion of the surface of the connector body facing the case, the tip end surface of the protrusion is formed in a state where the hooking projection of the connector body is engaged with the coupling hole of the case. By contacting the connector body, there is an effect that the connector body and the case can be closely contacted without any gap.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a connector used in an embodiment.

FIG. 2 is a front view showing a connector used in the embodiment.

FIG. 3 is a rear view showing a connector used in the embodiment.

FIG. 4 is a side view showing a connector used in the embodiment.

FIG. 5 is a plan view showing a connector used in the embodiment.

FIG. 6 is a sectional view taken along line XX of FIG. 2 showing a connector used in the embodiment.

FIG. 7 is a sectional view taken along line XX of FIG. 3 showing a connector used in the embodiment.

FIG. 8 shows a connector body used in the embodiment, and (a)
2 is a front view, and FIG. 2B is a cross-sectional view taken along line XX of FIG.

FIG. 9 shows a connector cover used in the embodiment, and FIG.
2 is a front view, and FIG. 2B is a cross-sectional view taken along line XX of FIG.

FIG. 10 is an operation explanatory view of the connector used in the embodiment.

FIG. 11 is a front view showing a terminal plate used in the example.

FIG. 12 is a side view showing a terminal plate used in the example.

FIG. 13 is a plan view showing a terminal plate used in the example.

FIG. 14 is a bottom view showing a terminal plate used in the example.

15A and 15B show a release button used in the embodiment, in which FIG. 15A is a side view and FIG. 15B is a front view.

16A and 16B show a contact used in the embodiment, wherein FIG. 16A is a side view and FIG. 16B is a front view.

FIG. 17 is an exploded perspective view showing a use state of the embodiment.

FIG. 18 is a front view showing a construction state of the operation terminal device to which the embodiment is applied.

FIG. 19 is a rear view showing a construction state of the operation terminal device to which the embodiment is applied.

FIG. 20 is a side view showing a construction state of the operation terminal device to which the embodiment is applied.

FIG. 21 is an exploded perspective view showing an operation terminal device to which the embodiment is applied.

FIG. 22 is a front view showing an operation terminal device to which the embodiment is applied;

FIG. 23 is a rear view showing the operation terminal device to which the embodiment is applied;

FIG. 24 is a right side view showing the operation terminal device to which the embodiment is applied.

FIG. 25 is a left side view showing the operation terminal device to which the embodiment is applied;

FIG. 26 is a sectional view showing an operation terminal device to which the embodiment is applied;

FIG. 27 is a front view of a mounting frame used for construction of the operation terminal device to which the embodiment is applied.

FIG. 28 is a side view of the mounting frame used for constructing the operation terminal device to which the embodiment is applied, taken along line XX of FIG. 27;

FIG. 29 is a bottom view of the mounting frame used for constructing the operation terminal device to which the embodiment is applied, which is cut along line YY in FIG. 27;

30 is a fragmentary cross-sectional view of the mounting frame used for constructing the operation terminal device to which the embodiment is applied, taken along line ZZ in FIG. 27;

FIG. 31 is a block circuit diagram of an operation terminal device to which the embodiment is applied;

FIG. 32 is a schematic configuration diagram of a remote monitoring control system.

FIG. 33 is an operation explanatory diagram illustrating a transmission signal used in the remote monitoring control system.

FIG. 34 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Circuit board 17 Connection hole 18 Connection hole 50 Connector 51 Connector body 51g Convex rib 52 Connector cover 52f Ridge 53 Quick connection terminal 54 Contact 55 Hook projection 82 Operation terminal

Claims (2)

(57) [Claims] 1. A plurality of hooking projections respectively inserted into a plurality of coupling holes penetrating along an arc defined on one surface of a case of a wiring device, and a plurality of hooking projections penetrating the case at positions different from the coupling holes. A contact inserted into the connection hole provided, and a terminal electrically connected to the contact and connected to an external electric wire are provided on the cylindrical connector body, and the hooking projection is inserted into the coupling hole to connect the connector body. to contact the conductive pattern of OsameSo circuit boards in a case together with the arc is rotated in the circumferential direction the hooking protrusion is engaged with the coupling hole connector body is coupled to the case in electrical contact Hooks and contacts
Bets are placed, the connector for external wire connections to the wiring mechanism of the outer peripheral surface key point parallel convex rib to the center line of the connector body in the peripheral wall of the connector body, characterized by comprising projecting. 2. An external electric wire connection to a wiring device according to claim 1, wherein a projecting ridge protruding from a central portion to a case side is formed along a peripheral portion of a surface facing the case in the connector main body. Connector for