JPS6161328A - Switch unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a switch device in which two circuit breakers are provided with grooves and are interlocked to trip when an overcurrent is detected, and to enable remote control. .

[Background Art] Conventionally, in a switch device such as a circuit disconnector of this type in which two circuit breakers are installed side by side and trip operation is performed in conjunction with each other, when the latch plate of the trip means is shared. However, there was a problem in that the latch load increased, making the tripping operation unstable and reducing reliability. Therefore, there was a system in which each circuit breaker h7 was equipped with a trip means and the trip means were operated in conjunction with each other, but the interlocking body was an external component, making it difficult to carry out the operation. There was a residence. In addition, there is a problem in that if the circuit is to be disconnected remotely from the outside, the MJm bucket becomes complicated.

[Objective of the Invention 1] The present invention has been made in view of the above-mentioned points, and its object is to provide an electromagnet for remote control tripping, which allows tripping to occur without variation and improves reliability. To provide a switch device to which a device can be easily added and which is easy to assemble.

[Disclosure of the invention 1 supervising director Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show two-pole examples.

Side covers 1a, 1b on both sides and central partition wall 1 in the center
The housing 2 is composed of the side covers 1a and 1b.
A circuit interrupting mechanism consisting of an operator 3 and a movable contact 6fl is stored between the recesses on both sides of the central partition wall 1c.
! The operator 3 of the structure for one circuit cutoff is the middle LP, and a coffin 4 is integrally provided on both sides of the part. The movable contactor 6 can be placed on the lower surface of the extending piece 6a that extends laterally from the lower surface of one end! Fix IJI contact 7! Latch pins 8 are provided protruding from both sides of the end. The operator 3 and the movable contact 6 are connected by a spring link 11 made of a torsion spring. In other words, at both ends of the spring link 11 there are connecting legs 11a111b bent and extending at right angles, and these connecting legs 11a, llb
One connecting leg 11a is inserted into the long hole 10 of the narrow plate-shaped metal fitting 9 for regulating expansion, and the other connecting leg 11a is inserted into the hole 12 drilled in the lower ma side of the middle part of the movable contact 6. Connecting leg 11b
is inserted into a hole 13 bored at one end of the operator 3 to connect the movable contact 6 and the operator 3. One end of a tension spring 14 made of a coil spring can be locked to a locking piece 6b extending laterally from the lower end of the movable contact 6 between the position of the hole 12 of the movable contact 6 and the movable contact 7. be. This tension spring 14
The other end is locked to a locking portion 3a provided on the lower surface between the other end of the operator 3 and the yuzuri 4, and serves as both an Ill pole spring and a handle return spring. At this time, the Z-shaped bent portion 6C formed at the center of the movable contact 0 is used as a relief for the center of the tension spring 14.

The block composed of the movable contactor 6, the operator 3, the spring link 11, the tension spring 14, and the plate-shaped metal fitting 9 connects the shaft 4 of the operator 3 to the side cover 1a or 1b and the medium-heat bulkhead 1c. The operator 3 is rotatably supported in the housing 2 by inserting it into the sleeve hole 5 provided in the recess, and the latch pin 8 is provided in the recess of the side cover 1a or 1b and the center part "J1e". It is disposed within the housing 2 in engagement with a certain arcuate guide fi428.

On the other hand, a fixed terminal plate 15 of a recessed type, which has a fixed contact 16 that contacts and separates from the movable contact 7, has a middle part bent in a Z shape, and a side cover I At 1 b and a central part! ! ! 1 Groove 1 of protrusion ff1i17 provided in the recess of c
8, fit the piece 15a above the bent part to position it, and place the bent horizontal piece 15b in the middle part on the side cover 1a or the center part! The protruding pieces 15d protruding from both ends of the upper part of the piece 15c placed on the inner bottom of the recess of the JIC and protruding outward from the bottom opening are placed in the center of the side cover 1a*!
! ! It is fixed by coming into contact with the lower part of 1c.

Now, the latch plate 23 which engages and disengages the two edge pins 8 is made by inserting the yuzu 25 into the insertion hole 23a which is passed through the side surface of the intermediate part, and connecting both ends of the shaft 25 to the side cover 1a or 1b and the central partition wall. It is supported and rotatably attached to the sleeve hole 27 of 1c, and a latch locking piece 2 for engaging the latch pin 8 is provided on one surface below the insertion hole 23a.
4, and one side of the wide part at the upper end and the side cover 11 or 1.
b and central part! ! ! A biasing spring 26 is compressed between the IC and a spring seat, and is constantly biased to rotate counterclockwise in the drawing. The collar 25a provided on the sleeve 25 is for making the sleeve 25 stable and self-supporting.

Next, the tripping groove will be described. In this embodiment, the tripping mechanism includes an overcurrent detection device gIA and an electromagnet device B operated by an external signal voltage.

f! l The current detection device A is composed of a bimetal plate 20, and the bimetal plate 20 is supported and fixed by one terminal connected to an external circuit. In other words, the plug-in terminal 19 is formed integrally by bending the support base 19a from the upper end side, and the adjustment screw 21 is screwed into the center of the lower piece of the support base 19a whose side ends are connected to the upper end side. Drill the screw hole 19e and tilt the tip slightly upward ii+! A protrusion 191 provided on a hanging piece 19d that hangs down and extends from the side surface of the tip of the upper piece.
hole 20aI provided at the bottom end of the bimetal [20]
:IIr+, and the bimetal plate 20 is fixedly supported by caulking the tip of the projection 19b. Then, the adjusting screw 21 is screwed into the screw hole 19c, and the tip of the adjusting screw 21 is brought into contact with the lower surface of the upper piece of the support base 19a of the terminal 19. Thus, the terminal 19 is fixed by fitting the central piece of the support base 19a into the fixing groove 22 provided in the recess of the side cover 1 & or the central tooth "l 1 e."

At this time, the upper end of the bimetal plate 20 is opposed to the wide upper end portion of the latch plate 23. Also, the adjustment screw 21
The head faces the jig insertion hole 22a drilled at the bottom of the recess of the side cover 1 & or center partition wall 1c so as not to protrude outside of the How Song 2, and then insert the adjustment screw 21 with a screwdriver through the jig insertion hole 22a. When screwed upward, the adjustment screw 21
The upper end pushes up and deforms the upper piece of the support base 19a and moves the tip of the upper piece upward using the base as a fulcrum, thereby reducing the distance between the upper end of the bimetal plate 20 and the wide part of the latch plate 23, that is, the current You can set the size of Here, since the jig insertion hole 22a is located on the side of the terminal 19 that protrudes outside, it is hidden when the terminal 19 is connected to a receptacle, etc. Therefore, there is no need for a cover etc. to hide the adjustment screw 21. , 311 after assembly is complete! ! is possible.

The bimetal plate 20 is electrically connected to the movable contactor 6 by a knitted wire.

200 million circuit breakers 8! Interlocking body 30 that interlocks and trips the grooves
is the opening 29 formed at the bottom of the central tooth 'jl 1 c.
The shaft hole 32 is located in the recess of the central tooth "Jlc".
It is rotatably attached by a glaze 31 inserted through a hole 30a of the interlocking body 30. The interlocking body 30 is formed with two triangular trip drive pieces 33, and the trip drive pieces 33 have central teeth with the central partition wall 1c as a boundary. ! ! I
They are located on both sides of C, and are further located so as to be in contact with one surface of the lower part of each latch plate 23.

Next, the electromagnetic device for remote control will be explained. Electromagnet device B is a fill frame 49 around which a fill 50 is wound.
An iron core 51 is inserted into the center of the coil frame 49, and a movable iron piece 52 and a yoke 53, which are attracted to the iron core 51, are arranged on the top and side surfaces of the coil frame 49.
The protrusions 53a on both sides of the tip of the horizontal piece of the yoke 53 are inserted into the tip of the yoke 53, and the movable iron piece 52 is rotatably supported at the tip of the horizontal piece of the yoke 53, and is biased by the spring 56 to the side opposite to the iron core 51 side. Electromagnet block and coil 50 opening m
Plug-in control end connected to L: F-, 54 has been removed. And both side collars 4 of the fill frame 49
A fitting groove 49b is provided in the lower ri 1 part of the fitting groove 49b, which opens inward in the middle direction and also has an open end surface.
Both side ends of the transverse arm 54a, which is bent and formed at the upper end of the control terminal 54, are fixed to i49b by moving and moving together, and the lead wire 1 of the coil 50 is fixed to the transverse arm 5 of the control terminal 54.
4a and is soldered to the cut-up protrusion 54b provided at the end of the coil frame 49. As shown in FIG.
49a and the horizontal piece 54& of the control terminal 54, and are sandwiched and fixed at 1111. The electromagnet block is inserted into the insertion hole 55 drilled in the bottom of the case 48, which has an open top.
The 111 al terminal 54 is inserted from above and penetrated below the case 48 to be housed in the case 48. Case 4.8
The seven ranks 48a around the upper end are slidably inserted into the grooves 57 of the central partition wall 1c and the side covers 1a, 1b, and the case 48, that is, the electromagnet device B is fixed to the Haunong 2. Here, the trip drive horizontal piece 59 of the interlocking body 30 is placed above the push-up piece 58 of the movable iron piece 52.

Now, the side cover 11.1b made of synthetic resin and the central tooth! ! ! IC is the central tooth! ! ! It is assembled by inserting the pin 36 integrally protruding from the side cover 1c into the mounting hole 37 of the side cover 1a, 1b and thermally welding its tip, and it is used for the opening/closing part and overcurrent detection. Device A1
The electromagnet device B, the fixed terminal plate 15, and the terminal 19 are housed and fixed in the housing song 2. A mounting plate 34 is placed over the upper surface of the housing 2 assembled in this way, and two fork-shaped mounting pieces 38 extending from both sides of the mounting plate 34 are attached to the side cover 1.
The mounting plate 34 is fixed to the housing 2 by inserting it between the protrusions 39 formed on the side surfaces of portions a and 1b and expanding the tip of the mounting piece 38 outward as shown in FIG. The mounting plate 34 has a fixing hole 40 formed at its end, and is fixed to a case of a container or the like through the fixing hole 40. Also,
A positioning hole 41 is formed in the center of the mounting plate 34, and a positioning hole 41 engages with a protrusion 42 formed on the upper surface when the housing 2, that is, the side covers 1M, 1B and the central partition wall 1c are assembled. Triangular handle attachment pieces 43 are bent upward on both sides of the hole 41, and the operating handle 35 is attached to these handle attachment pieces 43. That is, the shaft protrusions 44 on both sides of the operating handle 35 are pivotally supported in the shaft support hole 45 of the handle attachment piece 43, and the operating handle 35 is swingably attached to the attachment piece 34. Also, from the bottom of the operating handle 35! As shown in Figure @4, a pivot piece 46 is integrally covered, and a notch 47 is formed in this pivot piece 46. This notch 47 is connected to the connecting shaft 3b of the operating element 3, and the operating force of the operating handle 35 is transferred to the operating element 3.
to communicate.

In the above embodiment, the operating element 3 and the operating handle 35 are connected, but one end of the operating element 3 may be extended to serve as the handle.

Next, the operation of the embodiment will be specifically explained.

4 to 6 are cross-sectional views showing the operation. FIG. 4 shows when the operating handle 35 is set to the off side and the movable contact 7 is turned off, and FIG. 5 shows when the operating handle 35 is set to the on side. When set and the movable contact 7 is latched on, FIG. 6 shows a case where an overcurrent is detected but a trip operation occurs due to the far FfS operation.

Now, when the operating handle 35 is turned from OFF to ON, the operating element 3 rotates around the cypress 4, and this rotational force is transmitted to the movable contact 6 via the spring link 11! Then, the movable contact 6 is rotated around the latch pin 8 that engages with the latch locking piece 24 of the latch plate 23, and the movable contact 7 elastically contacts the fixed contact 16, and the movable contact 7 is turned on. Ru. At this time, there is a dead center in the link mfM formed by the spring link 11, and a reliable reversal operation is performed. It is now possible to obtain it.

That is, in the on state shown in FIG. 5, the spring link 11
is in a slightly compressed state, and the elastic force corresponding to this compression is applied to the movable contact 7 as contact and compression pressure.
It is now granted to

At the same time, the tension spring 14 is stretched and the trip driving force is turned off.

Next, when the bimetal plate 20 of the overcurrent detection device A with at least one pole is bent inward and the upper end of the latch plate 23 is pressed inward, as shown in FIG. The latch locking piece 24 and the latch pin 8 of the movable contact 6 are disengaged, the movable contact 6 rotates around the engagement point of the spring link 11 due to the return force of the tension spring 14, and the movable contact 7 opens. be done.

At this time, the latch pin 8 protruding from the movable contact 6
moves down along the idle groove 28, presses one of the trip drive pieces 33 located on the locus of the latch pin 8, and rotates the interlocking body 30 ff1IJ. This interlocking body 30 turns!
When FJJ is performed, the other trip drive piece 33 blocks the other trip drive piece 33! ? i The latch plate 23 of the rock 4M is rotated, and the movable contact 7 of the movable contactor 6 is forcibly opened.

In addition, if you want to turn off the on state shown in FIG. 5 by remote control, you can apply the control voltage No. 4H to the control terminal 54 of the electromagnet device B. In other words, when the signal voltage is applied and the iron core 51 is energized, the iron core 51 The movable iron piece 52 is attracted, and at this time, the push-up piece 58 pushes up the trip drive horizontal piece 59 of the interlocking body 30 to rotate the interlocking body 30. This rotation of the interlocking body 30 rotates the latch plate 23 and opens the pole in the same manner as described above. Of course, turning on and off by manual operation can be done by operating the operating handle 35.

By the way, in the case of the above-mentioned 1I11 pole, the upper end of one end of the movable contact 6 may hit the wall surface of the housing 2 and scrape the housing 2, which is a molded part, but the movable contact 6 is bent and extended from the upper edge of -i. This is prevented by the half piece 60.

Further, marks 61a and 61b indicating on and off are respectively written on the upper surface of the operating handle 35, and can indicate the above-mentioned on and off states.

[Effects of the Invention] As described above, the present invention provides side covers of the center VA* having outwardly opening recesses on both left and right sides, and the 2@ side covers 113 in each recess in the center wA''J. Block Ig left and right with
A movable contact which forms a housing having several storage parts and is provided with a movable contact that comes in contact with a fixed contact, and a latch that locks a latch pin protruding from one end of the movable contact. A latch plate is rotatably supported with a latch plate, and when the latch plate is engaged with one end of the latch plate and an overcurrent flows, the latch plate is rotated in the direction of releasing the lock between the two latch pins and the latch locking piece. I3 to move? ! A circuit interrupter Isotuga consisting of a current detection means and a handle means for manual operation is housed in the above-mentioned interrupter mechanism housing, and is located on the locus of movement of the latch pin that is pushed by the latch pin when the latch is released. The center part of the interlocking body, which has trip drive pieces at both ends that push the latch plate in the unlocking direction when the latch plate is activated, is rotatably supported on the central bulkhead, so that the latch of one circuit breaker mechanism If the plate is tripped by the overcurrent detection means, the latch plate of the other circuit disconnection mechanism can be surely tripped, and the latch load will be increased. ! The double-rotation shutoff has the effect that the tripping operation of the groove is performed reliably and stably without variation, improving reliability.In addition, the interlocking body is pivoted to the central partition wall, and the interlocking body is a member that forms the housing. Because it is integrated into the body, it is easy to assemble, and the trip drive piece is driven by an external control signal to push the latch plate in the unlocking direction; electromagnet! ! Since the device is attached to the housing below the interlocking body, in addition to manual operation using the handle and overcurrent tripping operation, tripping can be performed by remote grinding, and the electromagnet device and circuit breaker No. 1 Since the interlocking configuration with the interlocking body only requires linking the electromagnet VC position with the interlocking body, the groove construction can be easily completed and an electromagnet device for remote operation tripping can be easily added.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, rjS2 is an exploded perspective view of the main parts of the same, Fig. 3 is an external perspective view of the same, and Fig. 4 is an exploded perspective view of an embodiment of the present invention.
The figures to fjS6 are explanatory diagrams of the same operation. la and lb are side covers, 1c is a central partition wall, 2 is a housing, 6 is a movable contact, 7 is a movable contact, 8 is a latch pin, 16 is a fixed contact, 23 is a latch plate, 24 is a latch locking piece, 26 is a The interlocking body, 33 is a trip drive piece, 35 is an operation handle, Ali is an overcurrent detection device, and B is an electromagnet device. Agent Patent Attorney Ishi 1) Chief 7 Figure 3 Figure 4 Figure 5 ei! 1 Diagram 6

Claims (1)

[Claims] (1) A housing with cut-off mechanism housings on the left and right sides is constructed by a central partition wall having outwardly opening recesses on both left and right sides, and two side covers each covering each recess of the central partition wall. A movable contact is provided with a movable contact that is formed into a fixed contact and is brought into contact with and released from the fixed contact, and a latch locking piece that locks a latch pin protruding from one end of the movable contact and is rotatably supported. a latch plate, an overcurrent detection means that engages with one end of the latch plate and rotates the latch plate in a direction to release the latch pin and the latch locking piece when an overcurrent flows; and a movable contactor. A circuit interrupting mechanism consisting of a handle means that is manually driven to open and close is housed in each of the interrupting mechanism housings, and the circuit interrupting mechanism is located on the locus of movement of the latch pin that is pushed by the latch pin when the latch is released, and when the latch pin is pushed by the latch plate, the circuit interrupting mechanism is located on the locus of movement of the latch pin when the latch pin is released. The center part of the interlocking body is rotatably supported on the central bulkhead, and the trip drive piece is provided at both ends with a trip drive piece that pushes the latch plate in the unlocking direction at its tip. 1. A switch device comprising: an electromagnetic device for remote control tripping that rotates the interlocking body in a direction in which the interlocking body is pushed in the unlocking direction; attached to a housing below the interlocking body.