JPH06223913A - Connector for connecting external electric wire to wiring accessory - Google Patents

Abstract

PURPOSE:To provide a connector which is easy to perform the detachable operations to the case of a wiring accessory. CONSTITUTION:A connector 50 has the main body of a connector formed by connecting a cylindrical connector body 51 having a bottom, one surface of which is opened, to the connector cover 52 for covering the opening surface of a connector body 51. The main body of a connector has a contact 54 electrically in contact with the conductive pattern of a circuit board accommodated in the case of a wiring accessory. A protrusion rib 51g which is parallel to the center line of the connector body 51 is projected in the outer circumferential surface of the surrounding wall of the connector body and a sliding stopper at the rotary operation of the connector 50 is formed by the protrusion rib 51g.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an external electric wire connection for a wiring device used for connecting a signal wire as an external electric wire to an operation terminal equipped with a switch for operating a load in a remote monitoring control system. Regarding 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 cover 52 is joined to a connector body 51 to form a cylindrical connector body, and a quick-connect terminal 53 including a terminal plate 56, a lock spring 57, and a release button 58 is provided in the connector body. The contactor 54 is installed. Further, a hooking projection 55 is provided on the connector cover 52, and when the hooking projection 55 is inserted into the coupling hole formed in the case of the operation terminal as a wiring tool, the connector body is rotated to the case. It is designed to be combined with. When the connector body is connected to the case, the contactor 54 contacts the conductive pattern of the circuit board housed in the case, and the signal wire as an external electric wire connected to the quick connect terminal 53 becomes the quick connect terminal 53. And contact 54
And is connected to the conductive pattern through.

[0003]

SUMMARY OF THE INVENTION The connector 50 described above.
In that case, the connector body is attached to and detached from the case by rotating it with respect to the case.However, the connector body does not have a portion that serves as a knob for rotation, and a cylindrical connector body is used to attach and detach the connector body to the case. There is a problem that the fingers slip when rotating and it is difficult to work.

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and an object of the present invention is 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 achieve the above object, a plurality of insertion holes are inserted into a plurality of coupling holes penetrating along an arc defined on one surface of a case of a wiring device. Cylindrical connector with individual hooking protrusions, contacts inserted into connection holes penetrating the case at positions different from the coupling holes, and terminals electrically connected to the contacts and connected to an external electric wire. In the body, insert the hooking protrusion into the connecting hole and rotate the connector body in the circumferential direction of the arc, so that the hooking protrusion engages with the connecting hole to connect the connector body to the case, and the connector body is mounted in the case. In the connector in which the contact electrically contacts the conductive pattern of the circuit board, a convex rib parallel to the center line of the connector body is provided in a projecting manner on the outer peripheral surface of the peripheral wall of the connector body.

Further, it is desirable to form a ridge protruding toward the case side from the central part along the peripheral part of the surface facing the case in the connector body.

[0007]

In the present invention, the convex rib parallel to the center line of the connector main body is provided at a key portion of the outer peripheral surface of the peripheral wall of the connector main body which is attached to and detached from the case of the wiring device by being rotated with respect to the case. Therefore, it is possible to prevent the fingers from slipping when the connector main body is rotated for attachment / detachment to / from the case, and as a result, attachment / detachment work of the connector main body to / from the case is facilitated.

Further, in the case where the projection is formed along the peripheral portion of the surface of the connector body facing the case, the tip surface of the projection is the case when the hooking projection of the connector body is engaged with the coupling hole of the case. By contacting the connector, the connector body and the case can be brought into close contact with each other without a gap.

[0009]

EXAMPLE In this example, an operating terminal of a remote monitoring and control system is shown as a wiring device. That is, the remote monitoring and control system connects a plurality of operation terminals and control terminals to the signal line in a time-division multiple connection method, and uses the operation data generated by operating the switches provided in the operation terminals. A system in which control data is created based on the control data, and the control data is transmitted to a control terminal to which a load is connected so that the operating state of the load corresponds to the operation of a switch. Is configured as follows. Here, the central processing unit 81 includes a plurality of operating terminals 82 for monitoring the operating state of the switch SW and a load L.
A plurality of control terminals 83 and the like for controlling the are connected via a two-wire signal line Ls. Further, the operation terminal device 82
An individual address is set to each of the control terminal 83 and the control terminal 83, and the central processing unit 81 individually recognizes the operation terminal 82 and the control terminal 83 using this address.

The central processing unit 81 uses the signal line Ls for
A transmission signal Vs having a format as shown in FIGS. 33 (a) and 33 (b) 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, 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 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.

The central processing unit 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 constantly sends a dummy transmission signal including an empty address that is not set to each operation terminal device 82 and control terminal device 83 as address data. Further, when the interrupt signal processing means receives the interrupt signal Vi generated by any of the operation terminals 82 as shown in FIG. 33C, 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 switch SW
When the interrupt signal Vi generated from the operation terminal 82 in accordance with the operation of is detected in synchronization with the start pulse signal ST of the dummy transmission signal, 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 collectively transmitted 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 central processing unit 81 acquires the address of the operation terminal device 82 that has generated the interrupt signal Vi, and accesses the operation terminal device 82 using the acquired address to connect to the operation terminal device 82. The operation data corresponding to the operation state of the operated switch SW is received as reply data.

In the central processing unit 81, the operation terminal 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.

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.
Further, it becomes possible to rewrite by a wireless signal by infrared rays or the like from the address setter 85 (see FIG. 32) 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 transmitter / receiver 9 and a reception confirmation signal indicating that the wireless signal is normally received.
It returns to the address setter 85 through 4. When the confirmation of the data is requested, the data in the storage unit 93 is read and transmitted to the address setter 85, and when the correction of the data is requested, the required data is written as in the case of the setting, and the written data is set to the address. Return to container 85.

In the operation terminal 82, 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 is provided for each switch SW. , One of the pairs corresponding to the switch SW is lit when the corresponding load L is operating, and the other is lit when the load L is not operating. Further, 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.
Are 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 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 are assembled claws 21 protruding from the back side of the cover 20.
26 (see FIG. 26) is engaged with the peripheral portion of the assembly hole 11 formed on one side edge of the body 10, and the assembly screw (not shown) inserted through the through hole 12 drilled in the body 10 is covered. The bosses 22 projecting from the rear surface of the boss 20 are screwed together to be coupled. Here, as shown in FIGS. 23 to 25, the cover 12 has a larger vertical dimension than the body 10, and the rear portion of the body 10 has the cover 1
2 projects rearward from the rear surface. 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. A name plate 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 are projected on the right side surface of the body 10, and a through hole 14 (see FIG. 26) penetrating forward and backward is formed in the upper and lower central portions of the left side portion. , The mounting tongue 2 formed integrally with the cover 20 continuously
4 is inserted into the through hole 14. An engaging claw 25 protruding laterally is formed at the same position as the mounting claw 13 in the front-rear direction of the case 1 at the tip of the mounting tongue piece 24. Therefore, as shown in FIG. 25, the engaging claw 25 projects to the left side surface of the body 10. In the cover 20, the base of the mounting tongue piece 24 is formed with a release hole 35 penetrating the cover 20 in the front-rear direction. When the tip end of a driver or the like is inserted into the removal hole 35, the engaging claw 25 can be brought close to the case 1. Mounting tongue 24
It is designed to be able to bend.

On the cover 20, an operation piece 26 as an operation portion of the switch SW is provided at positions corresponding to the four switches SW which are push button switches mounted on the circuit board 2.
Is provided. 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, when a pressing force is applied to the operation piece 26 from the front (upper side in FIG. 21), the switch S
W can be operated, and when the pushing force acting on the operation piece 26 is released, the operation piece 26 is returned to the original position by the elasticity of the portion connecting the peripheral edge of the operation hole 27 and the operation piece 26. . 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 the signal hole 2 for exposing the light receiving element LR and the light emitting element LE for transmitting and receiving wireless signals.
9 is also formed.

An insertion hole 31 through which the front portion of the operation piece 26 is inserted is formed in the cosmetic cover 30 in correspondence with 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. Further, 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 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, and the characters on the nameplate sandwiched between the operation portion 41 and the operation piece 26 can be read. As shown in FIG. 21, 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 visible light ray is formed in a portion of the non-translucent portion 42 corresponding to the display hole 32. A transparent portion 43 for transmitting the infrared rays is formed, and an infrared transparent portion 44 for transmitting infrared rays is formed in a portion of the non-transparent portion 42 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 on the one side portion of the body 10. It is sandwiched between the holding claw 15 and the rear wall of the body 10 (see FIG. 2).
6), the other side of the circuit board 2 is positioned by engaging the notch 16 with the assembly screw. At the center of the body 10, as shown in FIG.
0 is mechanically coupled to the coupling hole 17, and the connector 5
A connection hole 18 for introducing the 0 conductive portion into the case 1 is bored as a connection portion with the connector 50. Coupling hole 17
Each pair of the connection holes 18 and the connection holes 18 are formed in an arc shape.
Further, on the outer surface of the case 1, a lock groove 19 is formed continuously with the coupling holes 17 on the same circumference as the coupling holes 17. The connector 50 is used to connect the signal line Ls to the internal circuit of the case 1.

The case 1 formed as described above is shown in FIG.
As shown in FIG. 7, it is attached to a metal mounting frame 60. The mounting frame 60 shown in this embodiment has two mounting windows 61 as shown in FIG. 27, and the case 1 can be attached to each mounting window 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, and the engaging claw 25 is formed on the left side of each mounting window 61.
The second receiving portion 63 that is engageable with is formed. As shown in FIGS. 28 and 30, the first receiving portion 62 and the second receiving portion 63 are formed by punching out a part of the mounting frame 60 forward, and the mounting claw 13 is inserted into the first receiving portion 62. Further, 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 coming into contact with the front surface of the mounting frame 60.
Further, when the case 1 is attached to the mounting frame 60, the back surface of the case 1 is substantially flush with the back surface of the mounting frame 60 or the mounting frame 6 is attached.
The dimensional relationship is set so that it is located slightly forward of the back surface of 0. When removing the case 1 attached to the attachment frame 60 from the attachment frame 60, if a tool 36 such as the tip of a driver is inserted into the removal hole 35, the attachment tongue piece 24 bends and the engaging claw 25 and the first portion. The engagement state with the second receiving portion 63 is released.

A pair of left and right long mounting holes 64, into which the box screws are inserted, are formed above and below each mounting window 61 of the mounting frame 60. The distance between the upper and lower mounting holes 64 is standardized according to the JIS standard etc. The embedding box 4 used when constructing the embedding type wiring device (see FIG. 17).
It is set so that a box screw screwed into the tongue piece 4a can be inserted. That is, the upper and lower mounting holes 6
The interval of 4 is set to be equal to the mounting frame for three large polygons capable of mounting up to three standardized unit-size embedded wiring devices. As a result, the mounting frame 61 can be attached to the ready-made embedded box 4 for wiring equipment.

Also, plate screw holes 65 into which plate screws are respectively screwed are formed above and below each of the mounting windows 61 of the mounting frame 60, and the decorative plate 5 used at the time of construction of a standard embedded wiring device. Can be attached to the mounting frame 60. That is, as shown in FIG. 17, the decorative plate 5 includes a middle frame 5a having a through hole 5c through which a plate screw screwed into the plate screw hole 65 is inserted, and a middle frame 5a coupled to the mounting frame 60 by the plate screw. The outer frame 5b has a claw (not shown) that is detachable from the frame 5a. The outer frame 5b has an exposed window 5d 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 applies the pressing force through the exposure window 5d of the decorative plate 5. in this way,
Since the ready-made decorative plate 5 used in the embedded wiring device can be attached to the mounting frame 60, not only the embedded box 4 but also the decorative plate 5 can be used. Therefore, it is possible to suppress an increase in manufacturing cost of members required for construction.

A pair of hooking holes 66 are also formed above and below each mounting window 61 in the mounting frame 60, and the peripheral portions of the mounting holes formed in the wall panel or the like are sandwiched between the mounting frame 60 and the mounting frame 60. With one end of the sandwich metal fitting inserted in the hook hole 66,
The end of the sandwich metal fitting is attached to the mounting frame 6 by tightening the attracting screw screwed to the sandwich metal fitting through the mounting hole 64.
It has become possible to approach 0. further,
A rib 67 is punched out at a peripheral portion 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.
The mounting frame 60 is reinforced by 8.

As shown in FIGS. 1 to 7, the connector 50 has a bottomed cylindrical connector body 51 having an opening on one bottom surface, and a connector cover fitted so as to close the opening surface of the connector body 51. In the internal space of the connector body formed by coupling 52 with, a quick connection terminal 53 for connecting the signal line Ls and a contactor 54 for contacting the conductive pattern of the circuit board 2 housed in the case 1 are provided. It has the configuration provided. The connector body 51 and the connector cover 52 have an assembly hole 52e (see FIG. 9) formed in the peripheral portion of the connector cover 52 with assembling claws 51e (see FIG. 8) projecting from the opening edge of the connector body 51 at two positions. They are joined together by engaging. Here, the assembly claw 51e engages with a step formed inside the assembly hole 52e, and
1e does not project to the outside.

Front surface of the connector cover 52 (upper surface in FIG. 1)
A pair of hooking protrusions 55 that are inserted into the coupling holes 17 formed in the body 10 are provided on the projections. That is, the coupling hole 1
As shown in FIG. 19, a wide hooking portion 1 is formed at one end in the circumferential direction and has a narrow width at the other end.
7b, the hooking protrusion 55 is provided with the introduction portion 17
The hook groove 55a is formed to have a size that can be introduced into the hook portion 17b but cannot be inserted into the hook portion 17b, and the peripheral portion of the hook portion 17b is introduced when the connector 50 is rotated after the hook protrusion 55 is introduced into the lead portion 17a. have. Therefore, when the connector 50 is coupled 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 portion 17b is engaged with the hook groove 55a. The connector 50 is prevented from coming off from the case 1.

On the other hand, in the connector cover 52, a positioning hole 52a is formed on the circumference substantially the same as the hooking projection 55, and the positioning projection 51a protruding from the opening surface of the connector body 51 is fitted into the positioning hole 52a. . A lock protrusion 51b is provided on the tip end surface of the positioning protrusion 51a. As shown in FIG. 6, the lock projection 51 b projects from the front surface of the connector 50, and the projection size is set smaller than that of the hook projection 55. The lock protrusion 51b is inserted into one end of the lock groove 19 formed continuously with the coupling hole 17 when the hooking protrusion 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 does not easily rotate with respect to the case 1 (see FIG. 10).
(See (b)).

Further, the front surface of the connector cover 52 (see FIG.
As shown in FIG. 1, FIG. 2, FIG. 9, etc., on the periphery of the upper surface of the ring-shaped protrusion 52 f, which protrudes slightly forward from the center.
Is projected. Due to the presence of such protrusions 52f, the front end surface of the protrusions 52f can be brought into close contact with the case 1 in the state where the connector 50 is coupled to the case 1, and the case 1 will not rattle. The connector 50 can be connected.

As shown in FIGS. 3 and 5, flat portions 51f parallel to the center line of the connector body 51 are formed at two locations on the outer peripheral surface of the peripheral wall of the connector body 51. One convex rib 51g is provided so as to project along the center line of the connector body 51. Therefore, when the connector 50 is rotated with respect to the case 1 as described above, if the fingers are brought into contact with the flat surface portion 51f, the flat surface portion 51f and the convex rib 51g prevent the fingers from slipping, and the connector 50 is kept in the case. It becomes easy to rotate with respect to 1.

Connector body 51 and connector cover 52
The quick-connect terminals 53 housed in the space between and are opposed to each other in each terminal frame 56a and the terminal plate 56 in which a pair of terminal frames 56a are coupled via a connecting piece 56b as shown in FIGS. Locking spring 57 arranged between a pair of
1 is guided by a guide groove 51c formed in the connector body 51 in the front-back direction (vertical direction in FIG. 1).
And a release button 58 such as 5. Locking spring 5
7 has a known shape in which both ends of a strip-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. It holds it to secure the electrical contact, and locks the wire 5
The electric wire is prevented from coming off by cutting the tip edge of 7b. In addition, the release button 58 is the terminal board 5
6, a main plate 5 disposed between a pair of terminal frames 56a
8a, both sides of which are formed with pushing protrusions 58b that come into contact with the locking pieces 57b, and the rear edge of the main plate 58a (see FIG. 1).
An operation button 58c is provided on the lower edge). Therefore, when the operation button 58c is pressed forward, a pressing force can be exerted on the locking piece 57b via the pressing protrusion 58b, and the locking piece 57b bends away from the electric wire to easily pull out the electric wire. Can be done. The operation of this type of quick connection terminal 53 is well known.

As shown in FIG. 3, a wire insertion hole 59 corresponding to each locking spring 57 is formed on the rear surface of the connector body 51, and the operation button 58c of the release button 58 is exposed. Therefore, the signal line Ls is
At the time of connecting the wires, if an electric wire to be the signal line Ls is introduced into the electric wire insertion hole 59, the locking spring 57 prevents the wire from coming off and the wire can be easily connected. On the other hand, when disconnecting the electric wire to be the signal line Ls from the connector 50, the operation button 58c
You can pull out the wire while pressing. Here, the signal line L
Since s will be sequentially fed and wired, the wire insertion hole 59
There are 2 sets and 4 holes in total. In addition, the operation button 58c of the release button 58 is 1
They are provided individually. An inspection hole 51d is also formed on the rear surface of the connector body 51 so as to correspond to each locking spring 57.

As shown in FIG. 16, the contactor 54 has 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. And the fixing piece 54d is cut and raised at one place of the main body 54a. The spring portion 54c is formed in a shape in which a substantially triangular portion that bulges away from the side surface of the main body 54a and a portion that is substantially parallel to the side surface of the main body 54a are continuous. The contactor 54 is shown in FIG.
As shown in FIG.
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 tip end portion of the guide rib 51d projectingly provided on the inner peripheral surface of the connector body 51 into the main body 54a, and projecting at the peripheral edge of the positioning hole 52a of the connector cover 52. The contactor 54 is also positioned by the contact of the positioned rib 52b with the spring portion 54c.

The contact portion 54b of the contactor 54 projects through the lead-out hole 52c formed in the connector cover 52, and when the connector 50 is coupled to the case 1, it is introduced into the case 1 through the connection hole 18 of the case 1, It contacts the conductive pattern formed on the circuit board 2. Therefore, by connecting an electric wire to be the signal line Ls to the quick-connect 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 passed through the connector 50 to the case. It can be connected to the circuit in 1. The conductive pattern of the circuit board 2 that contacts the contactor 54 is connected to the lead plate 3. That is, the pair of left and right lead plates 3 of the case 1 are connected to the signal lines Ls, respectively. Here, since the spring portion 54c is formed in the contactor 54, when the contact portion 54b contacts the circuit board 2, the contact portion 54b is pushed into the connector main body, and the spring portion 54c.
The bending causes the contact pressure to be obtained.

[0037]

As described above, according to the present invention, the convex ribs parallel to the center line of the connector body are provided at important points on the outer peripheral surface of the peripheral wall of the connector body which is attached to and detached from the case of the wiring device by rotating it with respect to the case. The protruding ribs prevent the fingers from slipping due to the convex ribs when the connector body is rotated for attachment / detachment to / from the case, resulting in easy attachment / detachment work of the connector body to / from the case. Has the advantage that

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 surface of the protrusion is the case when the hooking protrusion of the connector body is engaged with the coupling hole of the case. By contacting the connector, the connector main body and the case can be brought into close contact with each other without a gap.

[Brief description of 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 the 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 cross-sectional view taken along line XX of FIG. 3 showing a connector used in an example.

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

FIG. 9 shows a connector cover used in Examples, (a)
Is a front view, and (b) is a sectional view taken along line XX of (a).

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

FIG. 11 is a front view showing a terminal board used in Examples.

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

FIG. 13 is a plan view showing a terminal board used in Examples.

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

FIG. 15 shows a release button used in the embodiment, (a) is a side view and (b) is a front view.

16A and 16B show a contactor used in Examples, where FIG. 16A is a side view and FIG. 16B is a front view.

FIG. 17 is an exploded perspective view showing a usage 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 an operation terminal device to which the embodiment is applied.

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

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

FIG. 26 is a cross-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 constructing an operation terminal device to which the embodiment is applied.

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

FIG. 30 is a cross-sectional view of a main part of a mounting frame used in construction of an operation terminal device to which the example 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 coupling hole 18 connection hole 50 connector 51 connector body 51g convex rib 52 connector cover 52f ridge 53 quick connection terminal 54 contactor 55 hooking protrusion 82 operation terminal

Claims (2)

[Claims] 1. A plurality of hooking protrusions respectively inserted into a plurality of coupling holes penetrating along a circular arc defined on one surface of a case of a wiring device, and a case penetrating the case at a position different from the coupling hole. A cylindrical connector body is equipped with a contactor inserted into the provided connection hole and a terminal electrically connected to the contactor and connected to an external electric wire, and a hooking protrusion is inserted into the coupling hole to mount the connector body. When rotated in the circumferential direction of the arc, the hooking projection engages with the coupling hole to couple the connector body to the case, and the contact electrically contacts the conductive pattern of the circuit board housed in the case. 2. A connector for connecting an external electric wire to a wiring device according to claim 1, wherein a convex rib parallel to the center line of the connector body is provided at a key portion on the outer peripheral surface of the peripheral wall of the connector body. 2. The external wire connection to a wiring device according to claim 1, wherein the connector main body is provided with a ridge projecting toward the case side from the central part along the peripheral part of the surface facing the case. Connector for.