JP4641689B2 - Circuit breaker mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for attaching a circuit breaker to a mounting plate.
[0002]
[Prior art]
Conventionally, in order to attach the circuit breaker 21 to the mounting plate 22 as shown in FIG. 5, the screw 24 is inserted into the screw insertion hole 21 a formed in the circuit breaker 21 and fastened to the mounting plate 22.
[0003]
Further, as shown in FIG. 6, hook holes 31 a are provided on both side surfaces of the circuit breaker 31 in the longitudinal direction. Tightened and fixed to.
[0004]
Further, as shown in FIG. 7, the mounting plate 42 is fixed with a rail 45 formed in a shape in which a flange 45a is extended outward from both end edges having a substantially U-shaped cross section, and the bottom surface of the circuit breaker 41 is a rail. A recess 41a is formed so that the recess 41a can be inserted, a protrusion 41b that engages with the flange 45a of the rail 45 is formed on one side wall of the recess 41a, a guide groove 41c is formed on the other side wall, and the guide groove 41c A locking claw 43 that is elastically engaged is fitted into the recess 41a so that the tip protrudes. In order to attach the circuit breaker 41 to the rail 45, the protrusion 41b of the recess 41a of the circuit breaker 41 is locked to one flange 45a of the rail 45, and the circuit breaker 41 is pushed in from above, thereby locking claws 43 is pressed against the other flange 45a and slides outward. When the latching claw 43 gets over the collar 45a, the latching claw 43 slides into the recess 41a by the elastic force and returns to its original position. It returned and it fixed by the latching claw 43 latching to the collar part 45a.
[0005]
As shown in FIG. 8, the circuit breaker 51 is provided with hook holes 51a and 51b on both side surfaces in the longitudinal direction, and one hook hole 51a is engaged with a claw 52a protruding from the mounting plate 52, and the other The attachment hole 53 provided on the attachment plate 52 is engaged with the hook hole 51b. The attachment tool 53 is engaged with the engagement portion 53 a that bends the leaf spring at a substantially right angle and engages with the hook hole 51 b, the fixing portion 53 b that is bent into a hairpin shape and fixed to the attachment plate 52, and the attachment plate 52. And an engaging claw 53c formed at the tip of the fixing portion 53b by inserting the fixing portion 53b of the attachment 53 into the insertion hole 52b formed in the attachment surface of the attachment plate 52. Is engaged with an engagement hole 52c formed in the end of the attachment surface of the attachment plate 52 and fixed. In order to attach the circuit breaker 51, one hook hole 51a of the circuit breaker 51 is hooked on the claw 52a of the mounting plate 52, and the circuit breaker 51 is pushed downward, and the fitting 53 is inserted into the other hook hole 51b. The engaging portion 53a is engaged and fixed.
[0006]
[Problems to be solved by the invention]
However, the circuit breaker mounting structure shown in FIG. 5 and FIG. 6 has the disadvantage that it takes time to tighten the screws and the cost increases. In addition, the circuit breaker mounting structure shown in FIG. 7 requires a rail, which increases the cost. Also, since the holding force is weak, there is a risk of dropping during transportation. Moreover, the attachment structure of the circuit breaker shown in FIG. 8 is extended when a force is applied in the direction of arrow B at the time of removal, and there is a possibility that the holding force is reduced and the circuit breaker is dropped. Further, since the fixing portion of the attachment tool is level with the attachment surface of the attachment plate and the engaging claws of the attachment tool are engaged with the attachment surface, there is a drawback that the attachment plate becomes larger by the dimension C.
[0007]
Therefore, in view of the above problems, an object of the present invention is to provide a circuit breaker mounting structure that can reduce the cost by reducing the mounting time of the circuit breaker and reduce the size of the mounting plate. It is.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, there is provided a structure for attaching a circuit breaker to a mounting plate, wherein one of protrusions formed on both side surfaces in the longitudinal direction of the circuit breaker. Is inserted into the locking hole of the locking piece projecting on the mounting plate and locked, and the other projection of the circuit breaker is formed by bending the leaf spring, guiding the projection of the circuit breaker An engaging portion formed on the lower end of the trunk portion for engaging and fixing the mounting plate, and a locking hole for locking with the protrusion of the circuit breaker. Insert the body into an insertion hole drilled in the upper plate formed by bending the end of the mounting plate, and engage the engaging claw with the engagement hole drilled in the lower plate of the mounting plate It is characterized by being locked and fixed in the locking hole of the fixture that has been fixed.
[0009]
According to the second aspect of the present invention, in the circuit breaker mounting structure according to the first aspect, the gap is provided between the side surface of the mounting tool where the protrusions of the circuit breaker are formed at both ends in the width direction. For this purpose, a protruding piece is formed.
[0010]
According to the third aspect of the present invention, in the circuit breaker mounting structure according to the first or second aspect, the vertical plate portion formed between the upper plate portion and the lower plate portion of the mounting plate is provided. A convex portion for bending the body portion of the fixture is formed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a structure for attaching the circuit breaker to the mounting plate, wherein one of the protrusions formed on both side surfaces of the circuit breaker in the longitudinal direction projects from the mounting plate. The other part of the protrusion of the circuit breaker is formed by bending a leaf spring, and an inclined part for guiding the protrusion of the circuit breaker; It has a locking hole for locking with the projecting part of the circuit breaker, and an engaging claw formed at the lower end of the body part for engaging and fixing to the mounting plate, and the end of the mounting plate is bent An attachment tool fixed by inserting a body portion into an insertion hole formed in the upper plate portion formed in this manner and engaging an engagement claw with an engagement hole formed in the lower plate portion of the attachment plate. By locking and fixing to the stop holes, the circuit breaker installation time is reduced, reducing costs, and the size of the mounting plate is reduced. It can be.
[0012]
According to the second aspect of the present invention, in the circuit breaker mounting structure according to the first aspect, the gap is provided between the side surface of the mounting tool where the protrusions of the circuit breaker are formed at both ends in the width direction. Therefore, the circuit breaker can be easily attached.
[0013]
According to the third aspect of the present invention, in the circuit breaker mounting structure according to the first or second aspect, the vertical plate portion formed between the upper plate portion and the lower plate portion of the mounting plate is provided. By forming the convex part which bends the trunk | drum of an attachment tool, an attachment tool can be reliably fixed to an attachment board.
[0014]
【Example】
An embodiment of a circuit breaker mounting structure according to the present invention will be described with reference to the accompanying drawings of FIGS.
[0015]
The circuit breaker 1 has protrusions 1a and 1b formed at the lower center of both side surfaces in the longitudinal direction of the case. An operation handle 1c is provided on the upper surface, and insertion holes 1d for connecting conductors are provided above the protrusions 1a and 1b on both side surfaces in the longitudinal direction.
[0016]
The mounting plate 2 for mounting the circuit breaker 1 is cut at one end of the mounting surface, and is raised to be provided with a locking piece 2a. The locking piece 2a has a protruding portion 1a of the circuit breaker 1. A slightly larger locking hole 2b is formed. The other end is provided with a fixture 3.
[0017]
The attachment 3 is formed by bending a leaf spring, the upper part is formed with an inclined part 3a for guiding the protruding part 1b of the circuit breaker 1, and the vertical body part 3b below the inclined part 3a is a circuit. A locking hole 3c slightly larger than the protruding portion 1b is formed to lock the protruding portion 1b of the circuit breaker 1, and an engaging claw for engaging and fixing the mounting plate 2 at the lower end of the trunk portion 3b. 3d is formed to protrude in the opposite direction to the inclined portion 3a. In addition, projecting pieces 3e are formed to protrude in the same direction as the engaging claws 3d at the left and right ends of the body portion 3b at substantially the same vertical position as the locking hole 3c.
[0018]
The other end of the mounting plate 2 is bent in a substantially U shape, and an insertion hole 2d through which the body portion 3b of the mounting tool 3 can be inserted is formed in the bent portion of the upper plate portion 2c serving as the mounting surface. An engagement hole 2f for engaging the engagement claw 3d of the attachment 3 is formed in the bent portion of the lower plate portion 2e. Further, the hanging plate portion 2g between the upper plate portion 2c and the lower plate portion 2e is formed with a convex portion 2h that protrudes inward without punching the plate thickness from the outside with a press or the like.
[0019]
In order to attach the attachment 3 to the attachment plate 2, the lower end of the attachment 3 is inserted into the insertion hole 2d from above the attachment plate 2 with the inclined portion 3a facing outward. At this time, since the body portion 3b of the attachment tool 3 abuts on the convex portion 2h of the attachment plate 2, the body portion 3b of the attachment tool is pushed and bent from the inside, and then the attachment hole 2f of the attachment plate 2 is inserted into the engagement hole 2f. The engaging claw 3d is inserted and engaged and fixed. For this reason, the fixture 3 cannot be easily removed.
[0020]
In order to attach the circuit breaker 1 to the mounting plate 2, first, one projection 1a of the circuit breaker 1 is inserted into the locking hole 2b of the locking piece 2a from the upper side and locked, and the other protruding portion 1 b is placed on the inclined portion 3 a of the fixture 3. When the circuit breaker 1 is pushed downward, the other protruding portion 1b deforms the inclined portion 3a outward, and when the protruding portion 1b is pushed into the locking hole 3c, the inclined portion 3a is returned to its original position. It is fixed by returning to.
[0021]
When the installation of the circuit breaker 1 is completed, the protruding piece 3e of the fixture 3 presses the side surface of the circuit breaker 1 and fixes it in the longitudinal direction. Since the projecting piece 3e forms a gap L between the attachment 3 and the side surface of the circuit breaker 1, the inclined portion 3a of the attachment 3 is slightly deformed when the circuit breaker 1 is attached. The protruding portion 1 b can be locked in the locking hole 3 c of the fixture 3.
[0022]
In order to remove the circuit breaker 1, the inclined part 3a can be pushed outward with a finger and the circuit breaker 1 can be lifted and removed when the projection 1b of the circuit breaker 1 is disengaged from the locking hole 3b.
[0023]
In this embodiment, the shape of the attachment tool and the attachment plate is not limited. For example, the lower plate portion 12e of the attachment plate 12 can be inserted from the lower side of the attachment plate 12 as shown in FIG. The engagement holes 12f are formed to be large, elastic pieces 13f for preventing dropping off are formed on the left and right ends of the attachment 13, and the attachment 13 is inserted from the engagement holes 12f of the lower plate 12e to the insertion holes 12d of the upper plate 12c. It can be suitably changed without departing from the gist of the present invention, such as being fixed by the elastic piece 13f and the engaging claw 13e.
[0024]
【The invention's effect】
As described above, according to the first aspect of the invention, the circuit breaker is attached to the mounting plate, and one of the protrusions formed on both side surfaces in the longitudinal direction of the circuit breaker is the mounting plate. The other one of the protrusions of the circuit breaker is formed by bending a leaf spring to guide the protrusion of the circuit breaker. An inclined portion, a locking hole for locking with the protrusion of the circuit breaker, and an engaging claw formed on the lower end of the body portion for engaging and fixing the mounting plate, Insert the body part into the insertion hole drilled in the upper plate part formed by bending the end part, and fix the engagement claw with the engagement hole drilled in the lower plate part of the mounting plate. By locking and fixing in the fixing hole of the fixture, the circuit breaker installation time can be reduced, reducing costs And, there is an effect that since the fitting is mounted vertically to the mounting plate can be reduced the size of the mounting plate.
[0025]
According to the second aspect of the present invention, in the circuit breaker mounting structure according to the first aspect, the gap is provided between the side surface of the mounting tool where the protrusions of the circuit breaker are formed at both ends in the width direction. By forming the projecting piece for the circuit breaker, when the projection of the circuit breaker is locked in the locking hole of the mounting tool, the mounting tool locks the projection with a small deformation, so that the force is applied to the mounting of the circuit breaker. There is an effect that it can be easily attached without being required.
[0026]
According to the third aspect of the present invention, in the circuit breaker mounting structure according to the first or second aspect, the vertical plate portion formed between the upper plate portion and the lower plate portion of the mounting plate is provided. By forming the convex part that bends the body part of the fixture, the fixture is bent and fixed at three points of the insertion hole, the convex part, and the engagement hole of the attachment plate, so that it can be securely fixed to the attachment plate. There is an effect that can be done.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a circuit breaker according to the present invention is attached to an attachment plate.
FIGS. 2A and 2B show a state in which the circuit breaker according to the present invention is attached to the attachment plate. FIG. 2A shows a state in the middle of attachment, and FIG.
FIG. 3 is an enlarged view of a part A in FIG. 3;
FIG. 4 is a modified embodiment of the circuit breaker mounting structure according to the present invention.
FIG. 5 is a front view showing a state in which a conventional circuit breaker is fixed to a mounting plate with screws.
FIG. 6 is a front view showing a state in which a conventional circuit breaker is fixed to a mounting plate with a screw through a claw member.
FIG. 7 is a front view showing a state in which a conventional circuit breaker is fixed to a mounting plate via a rail.
FIGS. 8A and 8B show a state in which a conventional circuit breaker is fixed to a mounting plate via a mounting tool. FIG. 8A shows a state in the middle of mounting, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Circuit breaker 1a, 1b ... Projection part 2 ... Mounting plate 2a ... Locking piece 2b ... Locking hole 2c ... Upper plate part 2d ... Insertion hole 2e ... Lower plate part 2f ... Engagement hole 2g ... Hanging plate part 2h ... convex part 3 ... mounting plate 3a ... inclined part 3b ... trunk part 3c ... locking hole 3d ... engaging claw 3e ... projecting piece

Claims (3)

A structure for attaching a circuit breaker to a mounting plate, wherein one of the protrusions formed on both sides in the longitudinal direction of the circuit breaker is inserted into a locking hole of a locking piece protruding from the mounting plate. The other of the protrusions of the circuit breaker is formed by bending a leaf spring, an inclined portion for guiding the protrusion of the circuit breaker, and a protrusion of the circuit breaker, It has a locking hole for locking and an engaging claw formed at the lower end of the body part to engage and fix the mounting plate, and is formed by bending the end of the mounting plate The locking hole of the fixture that is fixed by inserting the body portion into the insertion hole formed in the upper plate portion and engaging the engagement claw with the engagement hole formed in the lower plate portion of the mounting plate. The circuit breaker mounting structure is characterized in that the circuit breaker is locked and fixed to the circuit board. 2. The circuit breaker attachment according to claim 1, wherein projecting pieces for forming a gap are formed between side faces of the attachment breaker in which the protrusions of the circuit breaker are formed. Construction. The convex part which bends the trunk | drum of the said fixture is formed in the vertical board part formed between the upper-plate part of the said attachment plate, and the lower board part, The Claim 1 or Claim 2 characterized by the above-mentioned. Circuit breaker mounting structure.

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