JP2002033039A - Breaker mounting structure - Google Patents

Abstract

(57) [Problem] To provide a breaker mounting structure capable of performing a breaker mounting / removing operation by forward / backward movement on a mounting base with a simple structure, and obtaining a robust connection structure. SOLUTION: A protruding body 5 provided at a lower part of the front surface of a breaker 1
a movable locking jig 3 in which a fixed locking piece 7 for locking a is formed on the mounting base 2, and a movable locking piece 13 for locking the projection 5 b provided on the lower rear portion is attached to the mounting plate 2 so as to be movable back and forth. Formed. The movable jig 3 is provided with a locking piece 3b which locks the breaker 1 at the tip thereof to move following the forward movement operation of the breaker 1 and also has a lock mechanism for preventing retreat when moving forward. Was.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a breaker mounted in a distribution board.

[0002]

2. Description of the Related Art Conventionally, a breaker is mounted in a distribution board by providing a screw insertion hole in the breaker and fixing the breaker to a breaker mounting panel provided in the distribution board by a screw, or FIG.
As shown in FIG. 3, a concave portion 22 is formed in the lower portion of the front and back surfaces of a breaker 21 having connection terminals 20a and 20b, and a hook-like locking claw 24 is inserted into the concave portion 22 and locked in the breaker mounting panel 23. And one of the locking claws is fastened with a screw 25 to make the breaker 21 detachable, or as shown in FIG.
By forming a with elasticity, the breaker 21 is inserted from above, and the concave portion 22 is locked by utilizing the elasticity to fix the breaker 21. Further, as shown in FIG. 5, a rail member 27 having an inverted trapezoidal cross section is provided on the breaker mounting panel 23, and the rail member 2 is provided on the bottom surface of the breaker.
There is a configuration in which a dovetail groove 28 that engages with the groove 7 is formed and is connected to be movable in the left-right direction.

[0003] However, fixing with a screw requires time and trouble to tighten the screw, and there is a fear that the screw may be lost and cannot be mounted. The structure using the locking claw 24 is also troublesome because the screw 25 is used for one of the locking claws 24. Also, in the case of using elasticity, the breaker must be removed at an angle while fixing the elastic member when removing, so that the bus bar (not shown) is used.
If the power supply side connection terminal 20a connected to the power supply side connection terminal 20a is excessively stressed and deteriorated, or if a plurality of breakers 21 are installed adjacent to each other, the removal work is very troublesome. In addition, the holding force of the elastic member may decrease, and it may not be possible to stably fix the elastic member. Further, the rail member 2
7, the rail member 27 is required, and the holding force is weak since the dovetail groove 28 is merely fitted.
During transportation, the lock was released and the breaker could fall off.

Therefore, as a mounting structure that does not damage the connection terminals of the breaker when attaching and detaching, there is a technique disclosed in Japanese Patent No. 3046797. This is a mounting structure of a plug-in breaker, in which the breaker is connected to a mounting base with a moving jig interposed, and the moving jig is mounted on a mounting base that can move forward and backward with respect to the bus bar, The breaker is connected to the bus bar to be connected back and forth so as to be movable back and forth so that the power supply side connection terminal is not degraded during the attaching / detaching operation. Further, with such a configuration, even if a plurality of breakers are attached adjacently, an arbitrary breaker can be easily removed.

[0005]

However, the above-mentioned patent No. 3
The technology disclosed in Japanese Patent No. 046797 requires the work of mounting the movable jig on the breaker mounting base and the work of mounting the breaker on the movable jig without using screws when mounting the breaker on the distribution board. There are many work processes, and the process of mounting the breaker on the moving jig has a fitting point, so it can not be set casually, it takes time to mount, processing of the moving jig and mounting of the breaker Mounting table processing for mounting the movable holding jig on the table was also necessary, which was costly. In addition, since it is mounted on the mounting base via the movable jig, it has been difficult to achieve a robust connection state.

In view of the above problems, the present invention provides a breaker mounting structure that enables a simple structure to perform the mounting and dismounting operation of the breaker by moving back and forth on a mounting base and obtains a robust connection structure. That is the task.

[0007]

In order to solve the above-mentioned problems, according to the present invention, an engagement portion is provided at a lower end of a front surface having a power supply side connection terminal and a rear surface having a load side connection terminal of a breaker. At the same time, an engaging portion for fixing the breaker by locking the engaging portion on the mounting base is provided, and the mounting portion is mounted on the mounting base by the mounting operation of the breaker and the forward moving operation after mounting. A mounting structure of a breaker to be locked to the locking portion,
The locking portion is formed by a fixed locking piece that locks the breaker front side engaging portion integrally formed on the mounting base and a movable locking piece that locks the breaker rear side engaging portion. The piece is formed on a movable jig assembled to the mounting base, and the movable jig is
A lock mechanism that moves following the forward movement of the breaker mounted on the mounting table and that inhibits the breaker from retreating at the forward position; It is characterized by a locking operation with respect to the joint.

According to a second aspect of the present invention, in the first aspect of the present invention, the lock mechanism has an engaging portion which is urged to widen in a state where the movable jig is mounted on the mounting table, and the movable jig is moved forward. It is characterized in that, when moving, the hooking portion is widened and hooked on a hooked step formed on the mounting base, so that the reversing movement of the moving holder is prohibited.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the moving holder has a hooking piece hooked on the front surface of the breaker, and the moving holder follows the forward movement of the breaker. And when the movable jig is moved backward, the breaker also moves backward in conjunction therewith.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the engaging portions formed at the lower ends of the front and back surfaces of the breaker are projections projecting forward or rearward. The stop piece and the movement locking piece have a groove into which the projection is inserted.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1A and 1B show an example of a breaker mounting structure according to the present invention, wherein FIG. 1A is a plan view showing a state in which the breaker is mounted on a breaker mounting base in a distribution board, FIG. 1B is a front view, and FIG. FIG. In the figure, 1 is a breaker, 2 is a mounting base, 3 is a moving jig, and a breaker 1 is a front surface 1 provided with a power supply side connection terminal 4a.
a and projections 5a and 5b, which are engaging portions, are provided on both lower ends of the rear surface 1b on which the load-side connection terminals 4b are provided, and both projections 5a and 5b are provided on the mounting base 2. It is held and fixed by a stop. FIG.
On the right side of (a) and (c), a bus bar (not shown) of the distribution board is arranged, and the breaker 1 attached to the mounting base 2 has a power supply side connection terminal 4a provided on the front surface thereof. Connected to bus bar.

The mounting base 2 has step portions 6a and 6b on the front and rear sides, is formed so as to have a space inside by raising the breaker mounting portion, and serves as a fixed hooking piece on the front step portion 6a. A cut-and-raised piece 7 is formed by punching and standing, and has a locking hole 7a therein. The locking hole 7a forms one locking portion for locking the front-side protrusion 5a of the breaker 1. In addition, a two-stage opening 8 having a wide width and a narrow width is formed through the step 9 in accordance with the position of the fixed locking piece 7 formed forward from the middle of the mounting surface to the rear step 5b. A portion of the movable jig 3 protrudes from the opening 8. The moving holder 3 has a main body 3a disposed in the internal space of the mounting base 2, and a front end thereof protrudes forward from a notch groove 10 formed in a step 6a at the front of the mounting base adjacent to the fixed locking piece 7. To form a flap-shaped engaging piece 3b which engages the breaker front surface 1a.
An operation protrusion 12 and a movement locking piece 13 are formed on the rear portion so as to protrude from the opening 8 onto the mounting base.

The moving jig 3 will be described in more detail with reference to FIG. 2A is a plan view of the movable jig 3, FIG. 2B is a side view, and FIG. 2C is a bottom view. The movable jig 3 is formed by resin molding. A V-shaped lock mechanism 15 is formed by being forked. The lock mechanism 15 has an operation projection 12 for gripping operation at an upper portion, and a movable engagement piece 13 for retaining and engaging the rear projection 5b of the breaker 1 at a V-shaped base. At the lower part of the operation projection 12, a C-shaped engaging portion 14 is formed which is in contact with the left and right wall surfaces of the opening 8 of the mounting base 2. Further, the V-shaped bifurcated portion is formed to have elasticity, and is formed so as to urge the widening when the opening angle of the V-shape is narrowed as shown in FIG.

By making the lock mechanism 15 have such elasticity, one wide portion 8a of the opening 8 formed in the mounting base 2 is formed in accordance with the forming width of the engaging portion 14, and the step 9 is formed. If the sandwiching width portion 8b formed behind is formed with a width that can be inserted by narrowing the V-shaped angle, the C-shaped engaging portion 1 can be formed.
4 moves forward from the narrow width portion 8b to the wide width portion 8a, the engaging portion 14 widens when passing through the step portion 9, and the rear end portion of the engaging portion 14 hooks on the step portion 19, so that the movement is maintained. The backward movement of the tool 3 is prohibited, and the movement holding jig 3 is locked. In addition, a portion formed in an inverted C-shape at the rear portion of the engaging portion 14 is a sliding surface 14 a that urges the moving jig 3 forward by a widening action when it comes into contact with the step portion 9. When the sliding surface 14a is reached, the movable jig 3 further moves forward, and the movable locking piece 13 surely covers the front side projection 5b, locks and securely connects the breaker 1 to the mounting base 2. it can.

The breaker 1 is mounted on the mounting base 2 formed as described above.
The procedure for attaching the camera will be described with reference to FIG.
First, as shown in FIG.
Then, the movable jig 3 attached to the opening 8 is pulled out to the rearmost portion, and the engaging portion 14 is positioned at the narrow width portion 8 b of the opening 8. Next, the breaker 1 is placed on the mounting base 2. At this time, the breaker 1
As shown in (b), the movable jig 3 is disposed between the engaging piece 3b and the movable locking piece 13, and furthermore, the front and rear protrusions 5a, 5b are provided.
Are arranged in front of the fixed locking pieces 7 and the moving locking pieces 13 of the mounting base 2.

Then, the breaker 1 is slid forward. By doing so, as shown in FIG. 3 (c), the front side projection 5a is locked by the fixed locking piece 7, and the movement holder 3 also slides forward by the action of the locking piece 3b. When the hook portion 14 widens when passing through the step portion 9, the movable holding jig 3 is prohibited from retreating and locked. Further, at this time, since the movable locking piece 13 locks the rear projection 5b, the front and rear projections 5a and 5b are locked, and the breaker 1 is connected to the mounting base 2.

In this connection operation, after the breaker 1 is mounted, the movable jig 3 may be operated forward, and the movable locking piece 13 pushes out the breaker 1 and the breaker 1 is attached to the mounting base in the same manner as described above. 2 In order to remove the breaker 1, the user can grasp the operation protrusion 12, reduce the opening angle of the V-shaped portion, release the latch, and pull the breaker 1 rearward.
b is engaged with the front face 1a of the breaker, the breaker 1 is pulled out, the connection with the mounting base 2 is released, and the breaker 1 can be removed.

As described above, after the breaker is mounted on the mounting table, the breaker can be mounted by a simple operation of moving the breaker forward, so that the mounting time can be reduced, and the vertical movement for mounting and the horizontal movement for moving forward. Since this is a simple moving operation, it is possible to easily cope with automation of the assembling process, and to reduce the cost of the assembling work.
In addition, since it is directly mounted on the mounting base, a robust mounting state can be obtained, and the breaker does not need to be operated obliquely during the mounting / removing operation, so a large stress is applied between the power supply side connection terminal and the bus bar. It does not occur and the connection terminal does not deteriorate. Furthermore, when the engaging portion is locked by moving forward, the connection state is not released because the locking portion is locked, and the breaker can be pulled out by pulling out the moving jig, so that even if the breaker is arranged adjacently. , Any breaker can be easily taken out. In addition, since a special process such as a fitting portion is not required for the mounting base, a simple structure can be achieved and the device can be manufactured at low cost.

Although the movable jig is provided so that the hooking piece is hooked on the front surface of the breaker, if the recessed portion on which the hooking piece is hooked is provided at the bottom of the breaker, it may be formed so as to hook on the bottom. good. In addition, the engaging portion of the breaker is a projection,
The concave portions may be reversed, and in this case, the fixed locking pieces and the movable locking pieces may be hook-shaped projecting pieces that engage with the concave portions.

[0020]

As described in detail above, according to the present invention,
After placing the breaker on the mounting base, the breaker can be mounted on the mounting base with a simple operation of simply moving it forward. No stress is applied to the connection terminal when connecting or disconnecting to the bus bar, and the connection terminal does not deteriorate. In addition, since a special process such as a fitting portion is not required for the mounting base, a simple structure can be achieved and the device can be manufactured at low cost. Furthermore, since it is directly mounted on the mounting base, a robust mounting state can be obtained.Since it can be connected by a simple operation of vertical mounting operation and horizontal forward movement operation, it can easily respond to automation of assembly It is possible to reduce the cost of the assembling work. Further, when the engaging portion is locked by moving forward, the connection state is not released because the locking portion is locked, and the breaker can be pulled out by pulling out the moving jig, so that even if the breaker is adjacently arranged. , Any breaker can be easily taken out.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of a breaker mounting structure according to the present invention, wherein (a) is a plan view showing a state where the breaker is mounted on a mounting table, (b) is a front view, and (c) is a side view. It is.

2 (a) is a plan view, FIG. 2 (b) is a side view, FIG. 2 (c) is a bottom view, and FIG. 2 (d) is a rear view showing a state where the opening angle of the lock mechanism is narrowed. It is a top view.

FIGS. 3 (a), (b), and (c) are views showing a procedure for connecting a breaker to a mount, and show a plan view and a side view, respectively.

4 (a) and 4 (b) are side views showing one example of a conventional breaker mounting structure.

FIG. 5 is a side view showing another example of a conventional breaker mounting structure.

[Explanation of symbols]

1. Breaker, 2. Mounting base, 3. Moving jig, 3.
b, hooking pieces, 4a, power supply side connection terminals, 4b, load side connection terminals, 5a, 5b, protrusions (engaging portions), 7,.
Fixed locking piece, 7a locking hole, 8 opening, 9 step, 12 operation protrusion, 13 moving locking piece, 14
Engagement part, 15 ... lock mechanism part.

Claims (4)

[Claims] An engaging portion is provided at a lower end of a front surface having a power supply side connection terminal and a rear surface having a load side connection terminal of a breaker, and the breaker is fixed by locking the engaging portion to a mounting base. A mounting structure for a breaker, wherein a locking portion is provided, and the breaker is mounted on a mounting base, and the forward movement operation after the mounting is performed, whereby the engagement portion is locked to the locking portion. Are formed with a fixed locking piece that locks the breaker front side engaging portion integrally formed on the mounting base, and a movable locking piece that locks the breaker rear side engaging portion. A lock mechanism is formed on a movable jig attached to the base, and the movable jig moves along with the forward movement of the breaker mounted on the mounting base and inhibits the breaker from retreating at the advanced position. The moving locking piece is engaged with the breaker rear side engaging portion when the moving member moves forward. A breaker mounting structure characterized in that the breaker is operated by locking. 2. The locking mechanism section has a latching section urged to widen in a state in which the movable jig is assembled to the mount, and a latch step formed on the mount when the movable jig is moved forward. 2. The breaker mounting structure according to claim 1, wherein said hook portion is widened and hooked to prevent the movable holder from retreating. 3. The moving holder has a latching piece which is hooked on the front surface of the breaker. When the breaker is moved forward, the moving holder also moves forward, and when the moving jig is moved backward. The breaker mounting structure according to claim 1 or 2, wherein the breaker also moves backward in conjunction with the breaker. 4. An engagement portion formed at a lower end portion of a front surface and a rear surface of a breaker is a protrusion protruding forward or rearward,
The breaker mounting structure according to any one of claims 1 to 3, wherein the fixed locking piece and the movable locking piece have a concave groove into which the protrusion is inserted.