JPS60151926A - Circuit breaker - 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 of the Invention] This invention relates to a circuit breaker, and the invention relates to a circuit breaker.
It is related to the conclusion of the fourth chapter.

[Prior art]

Conventionally, this mercenary circuit breaker was used as a circuit breaker.
It's structured like crap. Figure i-1 shows its OFF state 1
Fig. 2 is a cross-sectional diagram showing the condition of the patient, Fig. 2 shows the ON condition, and Fig. 3 shows the condition at the moment of dripping. In the figure, 111 is a base made of 1d edge material, and (2) is a shaft made of a part of this pace 111 (
a handle rotatably supported around (101), (3
] is a stiff spring layered on the shaft (101), one end of which is attached to the base (1) and the other end attached to the handle (101).
21 to urge the handle (2) counterclockwise. (4) is formed in a U-shape, and one leg is a U pin rotatably inserted into a hole (not shown) formed in the inner end (2O1) of the handle (2); (5
) is a latch in which the hole (not shown) into which the other throat of this J pin (4) is inserted movably (not shown) is fixed to the above latch +51 by the shaft +61. The shaft I8) supported on the base Ill by the mover? Koto of the above-mentioned town "IIjko (7) is supported by Kaido I-IJ Noh. (9) is a lever that can be rotated by the shaft (8), and at tK, one end is 1ris (9
The hole of 01) is fitted with the latch (5) and the hole o' (101 is the above-mentioned opening J stopper t71; ■ The axis that was opened, ()1) is on this axis (lO) One end of the sled is hooked to the above-mentioned 1lI11] (8), and the other end is hooked to the above-mentioned lever (9), which urges the above-mentioned lever (9) in a counterclockwise direction. can be. (121 is from the above
Rodino contact fixed to one end of facet (7), (l
Shizu Q, the mower installed in the above base il+ (141 is the tension spring stretched between this shaft + 131 and the above shaft head,
11G+ is a stator fixed to the above base, and the river is upper u[:, stator (identification contact fixed to 1st point) so as to face the above-mentioned clasp contact 1I21, (17) is one end of which is fixed to the above-mentioned A coil (+9
) 1- to the above-mentioned town twisted copper wire state 1- electrically connected wire d
Child, principle example and terminal, I! 0 makes the external isofield (,,I
(not shown) T-connection. (2'A is a yoke that is attached to the base Ill and covers the entire acupuncture path,
(c) is the plunger % that is sucked in the pressure direction in the figure against the spring force of the push spring (to) when the coil (17) is 'uJJ 1m.b) is when the coil 07) is turned in the opposite direction. A bobbin is used, and the above-mentioned plunger/tidal force is set at 11fW in the bobbin. A is r when the plunger 1A is sucked.
C rod driven to the left gyrus, V force is the above or] child, [
IIl stranded wire 1tsl IIC coated insulation tube,
4. The above-mentioned yoke (22) and the above-mentioned I-port room (6) are 1. At the rear of the grip, which is separated by one box, TA is a visible copper stranded wire, one end of which is electrically connected to the movable element (7), -
The other end of this 131J' down, 1 I. presser foot (ha) and yi
+1I-f External isobody (not shown) fr: iX
O (foundation), which is 1 mc, is a control screw with 5 screws attached to the tip of the upper metal (Imetal ■), ■ is the above flexible 1
liuj: Ran', *x4 insulating tube attached,
G. has its 1+uli connected to the terminal C+υ, and the other end is connected to the 1(4 part j/() of the base Il+.0θ is interposed between the surface of the base Il+ and the arc runner 00. (Rear, 1.1 frame is a sub-plate made of jll' + mechanical goods placed on both sides of the arc runner (7) in parallel with the direction of the arc, (l is the base plate above) 11) with the storage unit installed on the rail (not shown)
It is something that can make you feel happy with just one touch. (One end of it is fixed to the base II+, and the other end is pressed in the direction of the mounting tool. (+4 is the movable contact (12j) and the identified contact (+01) Extinguish the arc +il 'Fox Me, the grid on the exposed board is DI
It is supported by a pair of sub-plates at regular intervals. The trowel is a barrier for arc discharge.Next, we will explain the operation of a 1-inch circuit breaker.

That is, when the handle (2) is turned clockwise k (ON steaming) from the OF'F state of the circuit breaker shown in Fig. 1, the movement of the handle +21 is caused by the U pin (4), the latch (51 k M
The I cutter (7) rotates counterclockwise around 1ill 181", and the town contact point A is moved one step at a time to each point (A). In addition, the nondol (2) is rotated and dedicated. Then, since the quick release (8) moves slightly along the surface section that is bored by the base (1), the inner end (20) of the nozzle (2) moves slightly.
1) The toggle link structure formed by the dowel pin 41 is extended beyond the dead point, and the handle (inner y
! (When the go eye stops at the base il+, this series of ONN images is completed, resulting in the state shown in Fig. 2.The contact pressure of the first contact point of 0J (12I, l+jJ, and contact point Q@) is completed on the ONN image as shown in Fig. 2. is caused by the tension spring (I).Next, due to the ON state of IL!
Handle (inside j, uJ (201) of 21) Jumping pin (4
) and shape) The toggle ri to open / ri, precept, groove crosses the dead point and turns clockwise around Roe Eiko (7) shiyo i draw (8), and the movable contact lI21 moves to 1 The surface contact point 4 opens and melts to the OFF state shown in Figure 1. Next, when a relatively small overcurrent such as an overload current flows, the bimetal (9) bends due to its own Joule heat generation, causing the adjustment screw (9) provided at the tip of the bimetal to become −(Press 91 and press /< −(9) 75≦・
1ill t8]' in a clockwise direction, and the latch (5) and lever (9) are unlatched.

Therefore, due to the biasing force of the tension spring (14), the opening force +7
+ isIM 181 Rotates clockwise around the center, moves the movable contact (1); fixed contact (separates tS from the first line,
The moment of tripping is confusing as shown in the figure. After that, by the biasing force of the twist spring (3), the non-dolling i21, 'T-bin (
4) Through this, the latch +51 is rotated clockwise around st te+ 'i, and the latch (5) is locked to the lever (9), resulting in the same OFF state as shown in FIG. ′)
It will be automatically reset. Furthermore, the above-mentioned trip will be conducted with Tokinobujin and Note. On the other hand, when a large overcurrent such as short circuit current flows, the coil H is excited and the pusher @ is attracted against the urging force of the push spring, the rod shoulder is pushed out, and the lever (, 9 ) ・Pongee (8) Rotates clockwise around the entire center.

The latch (5) and lever (9) will be unlatched. After that, the previous operation similar to that caused by the overload '1 flow occurs and a trip occurs. Note that this trip is performed with instantaneous characteristics. However, because conventional circuit breakers have complicated opening and closing mechanisms, it takes a long time to eliminate trips due to overcurrent, and the time from the occurrence of a short circuit to when the contacts are separated (when the contacts are open; The ability to cut off (cutting capacity) is 1
Furthermore, conventional circuit breakers rarely have the disadvantage of not being able to exceed 71 times.
Another disadvantage was that the A-stand was complicated, making it difficult to assemble and expensive. In addition, since the latch (5) is locked by hooking into a hole formed in the lever (9), the latch (5) and the lever (9) are sheared and the burr of the lever prevents the tripping. In some cases, the latch (6)/< -19) may not release smoothly, or after tripping, the latch (5) may not lock into the hole in the lever (9) and may not reset automatically. This invention was made in order to eliminate all the drawbacks of the conventional ones as mentioned above, and by completely abolishing the latch member, the ciT #
The first and second latching surfaces provided on the child and the second . By loosely fitting and connecting the rollers of O8 and O8 to the σ bottle,
Improved cutting performance and stable operation, and 1J construction.
ML Hayabusa aims to provide an inexpensive circuit breaker.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Fourth
Each of the figures to the OFF figure shows an embodiment of the present invention, and FIG. 4 shows the OFF state, and FIG. 5 shows the ON state.
FIG. 6 is a side sectional view showing the entire state at the moment of lipping, and the off view is an exploded perspective view showing the main parts thereof. In the figure, ■ is the above-mentioned shaft (
8) A movable element that is rotatably supported, with a pair of oars and a second latch surface (46aJ (4
6b) t=what, and the movable contact placed opposite the fixed contact (lψ) on the other rotating end.Then, the shaft (with which the movable element θΦrC is attached) The movable contact 021 is constantly biased in the direction of opening from the fixed contact 021 by the tension spring ring stretched between the shaft 10) and the axis α3) housed in the base il+.

0 is according to the above ll1ltl (8) and the above movable element (g)
A locking lever that is rotatably pivoted and has a locking portion (47a)k, which is opposite to the biasing direction of the movable element (2) by a tension spring wound around the shaft (8). It is constantly biased in the direction. (6) mt51) I/'i above σ pin (4
) is rotatably loosely fitted to the other leg of the 1.
2nd degree and O8 rollers, this O1 roller is on the latch surface (46&) of the above O1, the above second roller is on the above locking part (47a), and the O8 low 2i511;
The other leg of the U-pin (4) is normally held in contact with the second latch surface (4eb).

Next, the present invention will be explained in detail. That is, in both the OFF state of the circuit breaker shown in FIG. 4 and the ON and N states of the circuit breaker shown in FIG. ) high-cut surface (
46a) (46b) and (-C force locking part (47)
The σ-pillar (4) is locked by being held at a).

When the handle (2) is rotated clockwise (ON operation) from the OFF state of the circuit breaker shown in Fig. 4, the toggle mechanism formed by the inner end (201) of the handle (2) and the σ bottle (4) extends beyond the dead point i, and the mover @@
rotates counterclockwise around the entire center of the shaft (8), and the 0T moving contact Q
4 comes into contact with the fixed contact (16), resulting in the ON state shown in FIG. Next, turn the handle (2) to the left (OFF operation)
Then, the inner end (201) of the nondle (2) and the U-bin (
The toggle link mechanism formed by The OFF state shown in Fig. 4 occurs. Next, when a relatively small overcurrent such as an overload current flows, the bimetal is bent due to its own Joule heat generation, and the adjustment screw )
is pressed, the locking lever @η rotates clockwise around the sleeve (8), and the locking lever @η rotates clockwise around the sleeve (8). O8's Laura (4'a Qi
Q 15a comes off from both the catch surfaces (46a) (46b) and the locking part (47a).

Therefore, the locking of the U-bin (4) is released, and the 0TTJIh child caster rotates clockwise around the shaft (8) due to the biasing force of the tension spring, and the municipal contact point is separated from the fixed contact point H. , an instantaneous trip state occurs as shown in FIG. After that, the handle (2) is rotated counterclockwise by the biasing force of the tension spring (3), and each roller (41f4 (5υ) is between the latch surfaces (46&) (46b) and the locking part (47a). , the U pin (4) is located at each roller tn!I (5a-i
Both latch surfaces (46 &) (46b) and the locking part (4y
When the U-bin (4) is clamped at point a), the U-bin (4) is locked, and the OFF state occurs as shown in the fourth factor, and is automatically reset. - If a large overcurrent such as a short-circuit current flows, the coil 117) is energized, the plunger holder is attracted against the biasing force of the push spring, and the rond holder is pushed out. , the locking lever O'h is on the sleeve (8)
Rotate clockwise around t-center, valley roller value 9) m t
5υ is both latch surfaces (4a &) (46b engagement retaining part (47a
) and release the latch of the U-pin (4). After that, the circuit operates in the same way as when it is caused by an overload current and trips. In the event of a trip due to such an overcurrent, the device of the present invention smoothly moves in opposite directions, with the roller and the third roller IQ't511 in the incoming direction and the second roller in the B direction in the OFF diagram. By dividing each roller into 19 wheels so as to rotate,
Because it has a simple mechanism without the conventional latch 15),
Since the contact opening time (the time from the occurrence of a short circuit to the opening of the contact) is shortened, the -m circuit current is quickly interrupted, and the interrupting performance is improved. Furthermore, the structure of the present invention is simple because the latch (5) and shaft (6) are not required.

-Also, the conventional one has a U pin (4) in the hole of the latch (5).
It is necessary to insert the shaft (6) into the holes of the oJ first child (7) and the latch (5) to assemble the shaft (6), but as is clear from FIG. There is no need for automatic assembly, so it can be manufactured at low cost.

In addition, since circuit breaker trips and automatic resets are avoided, and each roller 11υ rotates smoothly in opposite directions, locking and unlocking of σ/(4) are performed smoothly. is stable.

〔Effect of the invention〕

As described above, according to this invention, ■ the pin is the
．． By configuring the third roller as a full valve to be clamped and locked by the mover and the red clay lever, the contact time is shortened, resulting in improved shutoff performance and stable operation. What is the effect? Moreover, since the structure is simple and automatic assembly is possible, the circuit breaker can be manufactured at low cost.

[Brief explanation of drawings]

Figures O1 to O8 all show conventional circuit breakers, and Figure 1 is a sub-sectional view showing the OF'F configuration,
The figure is a side sectional view showing the oNN discomfort, and FIG. 3 is a side sectional view showing the state at the moment of tripping. . 4 to OFF diagrams all show one embodiment of the present invention, with FIG. 4 being a side sectional view showing the OFF state, and FIG.
The figure is a side sectional view showing the ON state, FIG. 6 is a side sectional view showing the state at the moment of dripping, and the OFF view is an exploded perspective view showing the main parts. In the figure, (2) is the operation handle, (4) is the U pin, α21
is a movable contact, H is a fixed contact, m1ir=child, (461L
) (46b) is O, second latch surface, θ is locking V par, (47a) ct is locking, (41) (51G11l
is the first. Second. This is the third roller. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Masu Oiwa Drawn letter (spontaneous) Showa year G month 8th day? Of invention? 1-6. Circuit breaker 3, supplement to 4-Ministry Representative Hitoshi Kokatayama Department 4, Agent 5, Subject of amendment (1) Scope of claims in the specification (2) Invention in the specification Detailed explanation fence 6, Contents of amendment (1) The claims in the specification are amended as shown in the attached sheet. (2) The specification shall be amended as follows. Claims: A U-pin formed into a substantially U-shape, one end of which is rotatably connected to an operating handle, and forming a toggle link mechanism together with the operating handle; first, second and third rollers that are fitted and connected in series; a first rotatably supported and disposed at one rotating end facing the first and eighth rollers, respectively; and a second latching surface, and a movable contact disposed opposite the fixed contact 6ζ at the other rotating end, with the direction ζζ in which the movable contact moves g''Fllllt from the fixed contact. The movable member is rotatably supported by the movable member and the movable member, and has a locking portion at the rotating end facing the roller of 0)2 above. A locking lever is always biased in the opposite direction to the biasing direction of the child, and the first roller is on the first launch surface and the eighth roller is on the second latch surface. The second roller normally contacts the locking portion, so that the other end of the U bin is locked, and the upper P contacts are brought into contact and separated by the upper ae operation handle, 1. A circuit breaker characterized in that when an overcurrent exceeding a predetermined value flows, an upper locking lever operates to release the locking, and upper contacts are opened.

Claims (1)

[Claims] A U pin is formed into a substantially U-shape, one end of which is rotatably connected to the operating handle, and forms a toggle link mechanism together with the operating handle; Installed rollers 1, 2nd and 8 rollers, 1o
It is movably supported and has first and second latch surfaces disposed facing the roller and the third roller, respectively, at one rotating end, and a latch surface at the other rotating end. It has a town contact placed opposite to the fixed contact, and the nine contact is always biased in the direction of opening from the fixed contact. Supported and times! A retaining lever is placed at the IJIJ end facing the roller of O8, and a retaining lever is always biased in the opposite direction to the application of the movable element. The rollers 1 and 8 are in contact with the latch surface of the holder 1, the roller 8 is in contact with the second latching surface, and the second roller is in contact with the stopper, so that other than the U pin When the ends are locked and the operating handle connects and separates the contacts, and an overcurrent of more than a predetermined value flows, the retaining V-par operates to release the lock, and the contacts close together. A circuit breaker characterized in that it is opened.