JP2006318778A - Circuit breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit breaker allowing an operation member to be locked without directly touching the operation member and easy to compose. <P>SOLUTION: This circuit breaker is so structured that the operation member 2 for operating a breaking mechanism incorporated in a case 1 can be locked in an on or off-state by a lock member 3 detachably inserted into the case 1. The lock member 3 is inserted in a direction perpendicular to the operation direction of the operation member 2 in order to restrain the operation of the operation member 2; and the lock member 3 is provided with a locking member 6 unlockably locked to the case 1 in order to keep its inserted state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a circuit breaker (hereinafter referred to as a breaker) provided to protect an electric circuit.

  In the circuit breaker, in order to prevent the occurrence of trouble due to careless operation of the handle (operating member), for example, a fixing member is attached to the handle so that the on / off state of the circuit breaker can be locked. A method has been proposed in which the operation of the handle is constrained by being attached so as to be covered (see, for example, Patent Document 1). In this example, the fixing member is composed of a handle frame portion and a locking piece. By attaching the handle frame portion to the handle, the locking piece is brought into contact with the edge of the opening hole of the cover. The movement of the handle in the rolling direction is restricted.

JP 2002-56765 A

  However, as described above, when the fixing member as the lock member is attached to the handle, there is a problem in its attachment method (attachment configuration) because the handle must be touched. Of course, from a safety standpoint, it is desirable to be able to lock the handle without touching it directly. It is also desirable that the configuration is simple and trouble is unlikely to occur.

  This invention is made | formed in view of such a situation, and it aims at providing the circuit breaker with the simple structure which can lock an operation member, without touching an operation member directly.

(1) In the circuit breaker of the present invention, the operating member 2 for operating the blocking mechanism built in the case 1 is locked in an on or off state by a lock member 3 that is detachably inserted into the case 1. A circuit breaker that can be used,
The lock member 3 is inserted in a direction orthogonal to the operation direction of the operation member 2 in order to restrain the operation of the operation member 2.

  According to such a configuration, since the lock member 3 is inserted in a direction orthogonal to the operation direction of the operation member 2, it is possible to effectively restrain the operation member 2 without directly touching the operation member 2. This makes it easier to lock the on / off state of the operation member 2.

(2) A pair of insertion holes 4 and 5 for inserting the lock member 3 is formed in the case 1, and the lock member 3 is reversed and inserted into any of the insertion holes 4 and 5. By doing so, it may be possible to lock in the on or off state. In this way, the single lock member 3 can be locked in the on or off state, so that convenience is improved.

(3) The locking member 3 may include a locking member 6 that is detachably locked to the case 1 in order to maintain the inserted state. If it does in this way, the insertion state of lock member 3 can be held reliably.

(4) The locking member 6 may be slidably provided on the insertion side end edge of the lock member main body 7. In this way, after inserting the lock member 3 into the case 1, the insertion end side of the lock member 3 can be locked to the case 1 by sliding the locking member 6.

  In the circuit breaker according to the present invention, since the lock member is inserted in a direction orthogonal to the operation direction of the operation member, the operation member can be effectively restrained without directly touching the operation member. It becomes easy to lock the on or off state, and the configuration can be simplified.

Hereinafter, a circuit breaker according to an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1A is a front view of the circuit breaker in the on state, FIG. 1B is a side view, and FIG. 1C is a front view of the circuit breaker locked in the on state. 2A is a front view of the circuit breaker in the off state, FIG. 2B is a side view, and FIG. 2C is a front view of the circuit breaker locked in the off state. FIGS. 3A to 3C are explanatory views of the structure of the lock member, and FIG. 4 is an exploded view of the circuit breaker.

  In these drawings, reference numeral 1 is a case, 2 is an operation member for operating a shut-off mechanism (not shown) built in the case 1 on or off, and 3 is a case for locking the operation member 2. 1 is a lock member that is removably inserted into 1; 4 and 5 are insertion holes for inserting the lock member 3; and 6 is detachable with respect to the case 1 in order to maintain the inserted state of the lock member 3. It is a locking member that locks on the insertion member and is slidably provided on the insertion side edge of the lock member main body 7.

  The case 1 is made of, for example, an insulating resin material, and has terminal portions 1b and 1b at both ends in the longitudinal direction of the case body 1a. A support seat portion 1c is provided to be supported so as to be rotatable. On the upper surface of the support seat portion 1c, a lock frame plate member 1d having insertion holes 4 and 5 for inserting the lock member 3 on the side surface is provided. It is fixed with screws. In the present embodiment, the lock frame plate member 1d is formed separately from the case main body 1a and the support seat portion 1c (see FIG. 4), but these may be formed integrally.

  A locking member 6 slidably provided on the insertion side end edge (indicated by a horizontal arrow) of the lock member main body 7 has a pair of locking claws formed in a pointed shape as shown in FIG. The locking arm 6a, 6a and the locking projection 6b are provided on the insertion side end edge of the lock member main body 7 with a groove-like locked engagement for locking the locking claws of the locking arms 6a, 6a. A slide recess 7b is formed in which the portions 7a and 7a and the locking projection 6b are loosely fitted so as to be slidable by a predetermined distance, and the locking member 6 can be slid to the locking positions on both outer sides. It is configured as follows. On the other hand, at the end opposite to the insertion side of the lock member main body 7 (the lower right portion in FIG. 3A), the engagement member 6 is engaged with the side edge of the insertion holes 4 and 5 corresponding to the engagement member 6. A stop projection 7c is formed.

  The locking member 6 described above is formed separately from the lock member main body 7, but since both are formed of an insulating resin material having elasticity like the case 1, the locking member 6 is locked. If the inner side of the member body 7 is strongly pushed inward, the locking arms 6a and 6a are once bent outward and then deformed back to the inner side, as shown in FIG. 3 (b). The stoppers 7a and 7a are locked in a retaining state. In this state, as described above, the locking member 6 is locked to the lock member main body 7 by a predetermined distance from the neutral position indicated by the solid line in FIG. Can be slid.

  In the circuit breaker configured as described above, when the ON state is locked, the insertion side of the lock member 3 is inserted into one insertion hole 5 as shown in FIG. As shown in c), when the locking member 6 projected from the other insertion hole 5 is lowered, the locking member 6 and the locking projection 7c of the lock member main body 7 are connected to the lock frame plate member 1d. Since the locking member 6 is locked on both sides, the locking member 6 is prevented from coming off, and the locking member 6 prevents the operation member 2 from moving in the off direction, so that the on state is stably locked.

  On the other hand, in order to lock the OFF state, the insertion side of the lock member 3 is inserted into one insertion hole 4 as shown in FIG. 2 (a), and the other is inserted as shown in FIG. 2 (c). When the locking member 6 protruding from the hole 4 is lowered downward, the locking member 6 and the locking projection 7c of the lock member main body 7 are locked to both sides of the lock frame plate member 1d. 6 is prevented from coming off, and the locking member 6 prevents the operation member 2 from moving in the on direction, so that the off state is stably locked.

  As described above, since the lock member 3 is inserted in a direction orthogonal to the operation direction of the operation member 2 in order to restrict the operation of the operation member 2, the operation of the operation member 2 without directly touching the operation member 2. Can be effectively restrained, and the ON or OFF state of the operation member 2 can be reliably locked. Further, the configuration can be simplified. Then, a pair of insertion holes 4 and 5 for inserting the lock member 3 is formed in the case 1, and the lock member 3 is reversed and inserted into one of the insertion holes 4 and 5. Since the lock member 3 can be locked in the on or off state, the number of parts can be reduced and the convenience can be improved. It should be noted that the present invention is not limited to the embodiments, and design changes and improvements can be freely made as necessary without departing from the spirit of the invention.

(A) is a front view showing the correspondence between the circuit breaker in the on state and the lock member, (b) is a side view, and (c) is a front view of the circuit breaker locked in the on state. (A) is a front view showing the correspondence between the circuit breaker in the off state and the lock member, (b) is a side view, and (c) is a front view of the circuit breaker locked in the off state. (A) Front view of lock member, (b) is a cross-sectional view taken along line BB in (a), and (c) is a cross-sectional view taken along line CC in (b). FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Case, 2 ... Operation member, 3 ... Lock member, 4, 5 ... Insertion hole, 6 ... Locking member, 7 ... Lock member main body

Claims (4)

The operation member (2) for operating the shut-off mechanism built in the case (1) can be locked in an on or off state by a lock member (3) that is removably inserted into the case (1). A breaker
The circuit breaker according to claim 1, wherein the lock member (3) is inserted in a direction orthogonal to the operation direction of the operation portion (2) in order to restrain the operation of the operation member (2).   The case (1) is formed with a pair of insertion holes (4) and (5) for inserting the lock member (3). The circuit breaker according to claim 1, characterized in that it can be locked in the on or off state by being inserted into the holes (4) (5).   The said locking member (3) is provided with the latching member (6) which detachably latches with respect to the said case (1) in order to hold | maintain the insertion state, The Claim 1 or 2 characterized by the above-mentioned. The circuit breaker described.   The breaker according to any one of claims 1 to 3, wherein the locking member (6) is slidably provided at an insertion side end edge of the lock member main body (7).

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