JPH0643987Y2 - Circuit breaker handle lock device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a handle lock device for a circuit breaker used for opening and closing an electric circuit in a control panel, a switchboard, or the like.

2. Description of the Related Art There are many types of handle lock devices for circuit breakers, including those made of metal and those made of plastic. In the conventional plastic handle lock device, since the lock member made of a soft material such as polypropylene is forcibly press-fitted into the handle of the circuit breaker, it takes time to attach and remove the lock member. When a force was applied to the handle, the handle was easily deformed, and the padlock for locking the handle lock device sometimes touched the test button of the earth leakage breaker and malfunctioned.

Problems to be Solved by the Invention When the lock member of the handle lock device of the circuit breaker is made of plastic, there is a problem in the operability of attaching and detaching the lock member to the handle by press fitting, and the lock used for maintenance. There was a problem that the padlock that locks the member is easy to move due to vibration and the like.

The present invention uses a plastic having excellent elasticity and rigidity as a lock member of a handle lock device of a circuit breaker, and allows a handle to be pinched and fixed with one touch.
The padlock that locks the lock member is sandwiched between the lock members, and the movement of the padlock can be restricted.

Effect of the invention The structure for fixing the lock member to the handle is such that the handle is sandwiched with one touch, so the lock member can be fixed to the handle quickly and securely, and the padlock also prevents malfunctions by the movement of the lock member being restricted. it can.

Embodiments Referring to the drawings, 1 is a circuit breaker, 2 is a case, 3 is a cover, and 4 is a handle rotatably supported.
Hold at N and OFF positions, and 5 is a locking member fixed to the handle 4 and locked at ON and OFF positions. As shown in FIG. 7, the locking member 5 has side pieces 7 and 7 integrally formed at both ends of the bridging portion 6, and the bridging portion 6 is located substantially in the middle of the side pieces 7 and 7. On the other hand, the concave portion 8 of the handle 4 is opposed to the inside of one end,
8 has locking portions 9 and 9 for locking, and sandwiching pieces 11 and 11 are formed inside the side pieces 7 and 7 by separating the locking portions 9 and 9 from the fitting recess, and the protrusion of the handle 4 is provided. 10 and 10 are the locking portions 9 and 9 and the clamping piece 1
It is sandwiched between 1 and 11 and locked in the fitting recess. Reference numeral 12 denotes a protruding portion, which is formed inside the other one of the side pieces 7, and a recess 13 is formed inside the side piece 7 facing the protruding portion 12. Reference numeral 14 is a padlock, and a metal fitting 15 is locked by being fixed to the protruding portion 12. Reference numeral 18 denotes an abutting portion, which is formed below the side piece 7.
Reference numeral 18 denotes an upper wall portion of a projecting hole 19 through which the handle 4 of the cover 3 projects.
It is locked at 20.

Next, a method of locking the handle 4 will be described. As shown in FIG. 3, the touch fingers on the other side of the side pieces 7, 7 of the lock member 5 are provided.
When 16 and 16 are pressed with fingers of the hand and force is applied to the inside, the bridge portion 6
One of the side pieces 7, 7 spreads around the fulcrum, and the handle 4 is inserted so that one of the side pieces 7, 7 spreads,
When the fingers 16 and 16 are released from the hands, the spring action of the bridging portion 6 restores the expansion of the one side piece 7 and 7 and locks it in the recesses 8 and 8 of the handle 4 as shown in FIG. The parts 9 and 9 are fitted and locked, and the protrusions 10 and 10 of the handle 4 are clamped with the locking parts 9 and 9.
The contact portion 18 of the side piece 7 is sandwiched between 11, 11 and the upper wall portion of the cover 3 is formed.
The lock member 5 is fixed to the handle 4 in a state where the lock member 5 is in contact with and locked to the handle 20.

Next, with the lock member 5 fixed to the handle 4, the padlock
Explaining the method of locking with the pad 14, as shown in FIG. 5, the unlocking rod 15 of the padlock 14 is provided on the side pieces 7, 7 of the locking member 5.
6th by inserting into the locking hole 17 formed by the bridge portion 6 and the protruding portion 12
The padlock 14 can be locked as shown.

Another embodiment of the lock member 5 will be described with reference to FIGS. 8 and 9. When the through hole 21 is formed in the handle 4, the locking engagement is performed according to the shape of the round hole of the through hole 21. Locking portions 22, 22 are formed to face one of the side pieces 7, 7 inside,
The holding portion 2 is provided at one end of each of the side pieces 7 and 7 so as to face the locking portions 22 and 22.
If the parts 3 and 23 are formed, the protrusions 24 and 24 of the handle 4 are sandwiched between the locking parts 22 and 22 and the holding parts 23 and 23, and the fixation is ensured.

Effects of the Invention As described above, the present invention has the following effects because the lock member is made of a plastic material having relatively high elasticity and rigidity and the side pieces are connected to the bridging portion in a pinching manner. .

(1) The lock member 5 is locked by a one-touch operation in which the side pieces 7, 7 of the lock member 5 are pressed by hand to engage the locking portions 9, 9 of the side pieces 7, 7 with the recesses 8, 8 of the handle 4. Since the lock member 5 can be fixed to the handle 4, the lock member 5 can be easily and quickly attached to and removed from the handle 4, and the fixing is reliable.

(2) The side pieces 7, 7 of the lock member 5, the bridging portion 6, and the protruding portion 12
Since the unlocking rod 15 of the padlock 14 is inserted into the locking hole 17 that can be formed by the locking, the unlocking rod 15 is sandwiched between the side pieces 7 and 7 and the movement is restricted, and the padlock 14 is the test button of the earth leakage breaker. It is possible to prevent a malfunction due to the padlock 14 without touching the etc.

[Brief description of drawings]

FIG. 1 shows a handlebar lock device for a circuit breaker according to the present invention.
1 shows an embodiment, FIG. 1 is a front view of a circuit breaker, FIG. 2 is a bottom view of FIG. 1, FIG. 3 is a view for explaining fixing of a handle lock member, and FIG. 4 is a lock on a handle. FIG. 5 is a view of a main part where the member is fixed, FIG. 5 is a view for explaining a locking method of the lock member, FIG. 6 is a view of a state where the lock member is locked,
8 is a perspective view of the lock member, FIG. 8 is an explanatory view of another embodiment of the handle lock device, and FIG. 9 is a sectional view taken along the line AA of FIG. 4 is a handle, 5 is a locking member, 6 is a bridging portion, 7 and 7 are side pieces, 8 and 8 are concave portions, 10 and 10 are protruding portions, 11 and 11 are sandwiching pieces,
Reference numeral 12 is a protruding portion, 14 is a padlock, 15 is an unlocking rod, and 17 is a locking hole. The same elements are designated by the same reference numerals.

Claims (2)

[Scope of utility model registration request] 1. A lock member (5) in which substantially middle portions of side pieces (7) and (7) are connected by a bridging portion (6), and the side pieces (7) and (7) are formed into bridging portions ( 6) has a function of opening and closing the end portion by the spring property of 6), and the side piece (7) of the lock member (5),
(7) Locking portion (9) provided so as to face the inner side of one end,
(9) and a holding piece (11) provided on the inner side surfaces of the side pieces (7), (7) with the engaging recesses (9) separated from the fitting recess.
(11), the protrusion (12) provided on the other inner side surface of the side piece (7), and the locking portions (9), (9) are attached to the handle (4).
Engaging with the recesses (8), (8) of the locking part (9), (9)
And the gripping pieces (11), (11) with the protrusion (1) of the handle (4).
Circuit in which 0) and (10) are sandwiched and the contact portion (18) provided at the lower portion of the side piece (7) is locked to the upper wall portion (20) of the projecting hole (19) of the handle (4). Circuit breaker handle lock device. 2. A lock (14) is hooked (unhooked) on a lock hole (17) formed by side pieces (7) and (7) of a lock member (5), a bridge portion (6) and a protruding portion (12). 15. The handle lock device for a circuit breaker according to claim 1, wherein the handle lock device is fitted.