JP6929195B2 - Distribution board breaker mounting structure - Google Patents

Description

The present invention relates to a breaker mounting structure of a distribution board for mounting a breaker to a panel of the distribution board.

In the circuit breaker mounting structure of the distribution board according to Japanese Patent Application Laid-Open No. 2001-32709 (Patent Document 1), the panel 1 of the distribution board has a notch 3 for receiving a resin mounting part 4 having an insertion piece 6 and a knob 5. A tongue piece 11 and an L-shaped piece 12 for holding the mounting part 4 in parallel, and a hooking piece 14 for hooking the breaker 2 are provided. A hooking recess 8 for hooking 2 is formed, and a retaining portion 10 is formed at the tip of the insertion piece 6 of the mounting component 4 so as to be locked from the rear side to the protrusion 9 of the panel 1.
Further, the plug-in breaker retaining structure according to Japanese Patent Application Laid-Open No. 2004-87279 (Patent Document 2) includes a mounting plate 1 having a hooking portion 15, a plurality of conductive bars 2 to 4, and conductive bars 2 to 4. The receiving blades 12 and 13 to be plugged and connected are arranged on the front surface, and the receiving blades 12 and 13 are hooked on the hooking portion 15 and mounted on the mounting plate 1 in a state where the receiving blades 12 and 13 are plugged and connected to the conductive bars 2 to 4. A plug-in breaker 5, a hanging piece 25 hanging on the side opposite to the mounting side, and a stopper portion 26 that can move back and forth between a position that protrudes and a position that does not protrude with respect to the mounting side surface of the mounting plate 1. It has a retaining member 27 that is attached to the hanging piece 25, and the stopper portion 26 is locked to the plug-in breaker 5 by moving the retaining member 27. The hanging piece 25 and the retaining member 27 are provided with an uneven engaging portion 34 that prevents the stopper portion 26 from moving from the position where the stopper portion 26 is locked to the plug-in breaker 5.

Japanese Unexamined Patent Publication No. 2001-32709 Japanese Unexamined Patent Publication No. 2004-87279

In each of the above structures, the breaker can be easily attached and detached by operating the mounting component 4 and the retaining member 27, but the main fixing force of the breaker is the locking force of the retaining portion 10 to the protrusion 9. Alternatively, it is the engaging force of the uneven engaging portion 34, and considering that the mounting space is limited, there is a limit to the improvement.
A main object of the present invention is to provide a breaker mounting structure for a distribution board in which the breaker can be easily attached and detached, a sufficient fixing force at the time of mounting is sufficiently secured, and the cost is low.

In order to achieve the above object, the invention according to claim 1 is a distribution board panel having a notch, a breaker having a locked portion, and a locking portion that locks to the locked portion. And a tweezers-shaped mounting member having an engaging portion that engages with the notch , the locking portion is arranged at the tip of the mounting member, and the tip is naturally In the state, it is characterized by having an interval narrower than the width of the locked portion.
The invention according to claim 2 engages a panel of a distribution board having a notch, a breaker having a locked portion, a locking portion that locks to the locked portion, and the notch. It is provided with a tweezers-shaped mounting member having an engaging portion, and is characterized in that a slit is formed between the engaging portion and the locking portion or a portion connected to the locking portion. be.
The invention according to claim 3 engages a panel of a distribution board having a notch, a breaker having a locked portion, a locking portion that locks to the locked portion, and the notch. It is provided with a tweezers-shaped mounting member having an engaging portion, the engaging portion is arranged other than the bent portion of the mounting member, and the notch portion is engaged with the locking portion. It is characterized by having a mounting tapered portion that engages with the engaging portion at a position where it is locked to the stop portion.
According to a fourth aspect of the present invention, in the above invention, the notch portion has a taper portion for mounting standby that engages with the engaging portion at a position where the locking portion does not engage with the locked portion. It is characterized by being.

The main effect of the present invention is that the breaker can be easily attached and detached, a sufficient fixing force at the time of mounting is sufficiently secured, and a low-cost breaker mounting structure for the distribution board is provided.

It is a perspective view of the breaker mounting structure which concerns on this invention. It is a partially separated perspective view of FIG. It is a top view of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3 (internal structure omitted). It is a perspective view of the mounting member of FIG.

Hereinafter, embodiments and modifications thereof according to the present invention will be described as appropriate with reference to the drawings. The present invention is not limited to the following embodiments and modifications.
The front, back, top, bottom, left, and right in the form and the modified example are defined for convenience of explanation, and may change depending on the installation situation and the position and posture of the movable or posture-changeable member.

FIG. 1 is a perspective view of a breaker mounting structure 1 of a distribution board according to the present invention.
The breaker mounting structure 1 has a pair of plate-shaped bases 4 on which two plate-shaped panels 2 are placed side by side on the upper surface side, and a base so as to cross between the bases 4 via the left and right bases 6. A pair of front and rear bus bars 8 attached to 4 and arranged above the front and rear panels 2, and a U-shaped pedestal 10 with a side view attached to the upper part of each base 6 and the left and right ends of the bus bar 8. A bus bar 14 attached to the gantry 10 via a support plate 12 and arranged above each bus bar 8 and a mounting member 18 prepared for each breaker 16 are provided.

FIG. 2 is a perspective view of the rear panel 2 according to the circuit breaker mounting structure 1, three breakers 16 (one of which is in a separated state), and four mounting members 18. FIG. 2 is a top view of FIG. 2, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 in which the internal structure is omitted, and FIG. 5 is a perspective view of the mounting member 18.
Since the front panel 2 is the same as the rear panel 2 except for the arrangement that is line-symmetric with respect to the bus bar 14 in the left-right direction, the description thereof will be omitted. The same applies to the breaker 16 and the mounting member 18 mounted on the front panel 2.

The front side of the panel 2 on the rear side is the first leg portion 20 bent downward (standing portion 20a) and forward (contact portion 20b), and the rear side portion of the panel 2 is downward (standing). The second leg portion 22 is bent rearward (contact portion 22b) and the portion 22a). The panel 2 is screwed in contact with the base 4 at the contact portions 20b and 22b of the first leg portion 20 and the second leg portion 22, and the standing portions 20a of the first leg portion 20 and the second leg portion 22 are screwed together. It is separated from the base 4 by 22a.
The space between the first leg portion 20 and the second leg portion 22 on the panel 2 extends in the front-rear and left-right directions to form a mounting portion 24 on which a plurality of (six) breakers 16 can be mounted.

The upright portion 20a of the first leg portion 20 is provided with a plurality (six) of locking pieces 26 having a front view-shape protruding upward from the mounting portion 24 so as to be arranged side by side. The locking piece 26 is formed so as to be continuous with the upright portion 20a by cutting up a part of the mounting portion 24.

Further, six notches 30 are provided at the corner portion between the upright portion 22a of the second leg portion 22 and the mounting portion 24 or the peripheral portion thereof.
Each notch portion 30 is adjacent to the rectangular portion 30a arranged in the upright portion 22a and the rectangular portion 30a in the mounting portion 24, and expands to the left and right as it goes forward, and has a maximum width of about the left and right width of the rectangular portion 30a. The first tapered portion 30b as a taper portion for mounting standby, which is narrowed on the contrary after becoming A second tapered portion 30d as a mounting tapered portion, and a terminal portion 30e which is arranged on the front side thereof and is similar to the connecting portion 30c except that a dead end is formed at the front end portion, are provided in a series.

Each bus bar 8 includes six branch-shaped portions 32 that project upward and outward. Only the tip of each branch 32 is shown in FIG.
Further, the bus bar 14 has a total of 12 branch-shaped portions 34 that project downward and outward, six that protrude downward and forward, and six that protrude downward and backward.

Each breaker 16 includes a substantially rectangular breaker main body 40, a pair of left and right concave power supply side connection terminals 42 arranged at the front portion of the breaker main body 40 (only the front side breakers 16 in FIG. 1 are shown), and below the breaker main body 40. The first locked piece 44, which is formed in the lower part of the breaker body 40 and projects forward from the breaker body 40, and a pair of left and right concave load-side connection terminals 46 arranged at the rear part of the breaker body 40. A second locked piece 48 as a locked portion that protrudes rearward from the breaker main body 40 formed below the breaker main body 40 is provided.

Each mounting member 18 is a metal tweezers-shaped leaf spring, has a symmetrical shape, has a bent portion 50, a pair of plate-shaped base portions 52 extending forward from the bent portion 50, and front from each upper portion thereof. The upper tip 54 as an engaging part that extends inward at the front end and extends forward and inward from the lower part of each base 52 in the same manner as the upper tip 54, and further extends upward and bends horizontally inward. It includes a lower tip portion 56 having an L-shaped portion 56a (locking portion) having an inverted L-shape.
The slit between the upper tip portion 54 and the lower tip portion 56 (lower middle portion 56b) excluding the L-shaped portion 56a has a vertical width slightly thinner than the wall thickness of the panel 2 (mounting portion 24). ing.
The outer shape of the upper tip portion 54 and the lower intermediate portion 56b is the same as the shape of the first tapered portion 30b and the second tapered portion 30d of each notch portion 30, and more specifically, the first tapered portion 30b and the second tapered portion 30d. It is slightly larger than the shape of and spreads forward. That is, the outer shape of the upper tip portion 54 and the lower intermediate portion 56b is the same as that of the first tapered portion 30b and the second tapered portion 30d, where the width in the left-right direction is widened toward the front except for the tip portion. The portion having the maximum width in the portion 54 and the lower intermediate portion 56b has the same position in the front-rear direction and slightly larger in the left-right direction with respect to the portion having the maximum width in the first tapered portion 30b and the second tapered portion 30d.
When the mounting member 18 is in a natural state (a state in which no external force is applied), the distance between the inner surfaces of the pair of L-shaped portions 56a facing each other in the left-right direction is determined by the second locked piece 48 of the breaker 16. It is slightly smaller than the width in the left-right direction. Further, the distance between the outer surfaces of the L-shaped portion 56a in the left-right direction is slightly smaller than the distance between the outer surfaces of the notch portions 30 in the left-right direction at the end portion 30e.

The breaker 16 is attached to and detached from the mounting portion 24 of the panel 2 by an operator as follows, for example.
The operator inserts the mounting member 18 forward from the rectangular portion 30a in the notch portion 30 for mounting the breaker 16 in advance, and arranges the lower portion of the upper tip portion 54 in the first tapered portion 30b. Due to its elasticity (particularly at the bent portion 50 and the rear portion of the upper tip portion 54), the mounting member 18 exerts a pressing action on the first tapered portion 30b at the upper tip portion 54 in the lateral direction to further exert an external force. Unless added, it stays at the position of the first tapered portion 30b.

Then, first, the operator puts the first locked piece 44 of the breaker 16 into the locking piece 26 of the panel 2 or arranges it at an adjacent portion thereof, and corresponds the second locked piece 48. It is arranged in front of the notch 30 (see the circuit breaker 16 on the left side in FIGS. 2 and 3).
Next, the operator puts the breaker 16 and the mounting member 18 in a state where the first locked piece 44 enters the locking piece 26 and the second locked piece 48 enters between the L-shaped portions 56a. Move forward (see central breaker 16 in the figure). The pair of upper tip portions 54 of the mounting member 18 are contracted inward so as to approach each other by the connecting portion 30c of the notch portion 30, and the pair of lower tip portions 56 are second engaged between the L-shaped portions 56a. When the piece 48 is inserted, it spreads slightly below the notch 30. Further, one of the power supply side connection terminals 42 approaches the tip of one branch-shaped portion 32 in the bus bar 8, and the other power supply side is brought closer to the tip of one branch-shaped portion 34 in the bus bar 14. The connection terminal 42 approaches.
The operator pushes the breaker 16 and the mounting member 18 forward so that the entire first locked piece 44 enters the locking piece 26, and the L-shaped portion 56a and the second locked piece 56a of the mounting member 18 are locked. The piece 48 and the piece 48 are located at the end portion 30e of the notch portion 30, and continue until the upper tip portion 54 is located within the second tapered portion 30d, and the attachment of the breaker 16 to the panel 2 is completed (the breaker on the right side in the figure). 16).

In the mounted state, the breaker 16 is pressed against the mounting portion 24 of the panel 2 by the upper portion of the locking piece 26 of the panel 2 and the upper portion of each L-shaped portion 56a of the mounting member 18, and the upward movement is stopped. ..
Further, the breaker 16 is prevented from moving in the left-right direction by the left and right portions of the locking piece 26 and one left portion and the other right portion of the L-shaped portion 56a.
Further, the breaker 16 is prevented from moving in the front-rear direction by the rear surface of the locking piece 26 and the front surface of the L-shaped portion 56a.
The mounting member 18 having the L-shaped portion 56a is elastically fitted to the second tapered portion 30d of the upper tip portion 54, so that movement in the front-rear direction and the left-right direction is suppressed. Further, the mounting member 18 is prevented from moving in the vertical direction by the elastic fitting and the contact of the upper side portion of the lower intermediate portion 56b with the lower surface of the mounting portion 24 (arrangement of the slit with respect to the peripheral portion of the notch portion 30).
The tips of the branch-shaped portions 32 and 34 are connected to the power supply side connection terminal 42.

When removing the breaker 16, the operator retracts the mounting member 18 until the upper tip portion 54 enters the first tapered portion 30b or passes through the rectangular portion 30a and exits from the notch portion 30 to retract the L-shaped portion 56a. Is separated from the second locked piece 48 of the breaker 16, and the breaker 16 is further retracted so that the first locked piece 44 is separated from the locking piece 26 of the panel 2 and the power supply side connection terminal 42. Is separated from the tips of the branch portions 32 and 34.
The operator may pinch the upper tip portion 54 when the mounting member 18 is retracted, and in this case, the mounting member 18 is easily moved after the connecting portion 30c. Further, the operator may retract both the breaker 16 and the mounting member 18.

Such a breaker mounting structure 1 includes a panel 2 of a distribution board having a notch 30, a breaker 16 having a second locked piece 48, and an L-shaped portion that locks to the second locked piece 48. It includes a 56a and a tweezers-like mounting member 18 having an upper tip 54 that engages the notch 30. Therefore, the operator simply engages the upper tip portion 54 of the mounting member 18 with the notch 30 of the panel 2 and locks the L-shaped portion 56a with the second locked piece 48 of the breaker 16. The circuit breaker 16 can be easily attached to the panel, and the breaker 16 can be easily removed only by releasing the locking of the L-shaped portion 56a to the second locked piece 48. Engagement of the mounting member 18 for mounting the breaker 16 with the panel 2 can be realized at low cost by forming the notch 30 in the panel 2. Further, since the mounting member 18 is locked or engaged with the second locked piece 48 of the breaker 16 and the notch 30 of the panel 2 by an elastic force, the fixing force at the time of mounting the breaker 16 is sufficient. Secured.
Further, the L-shaped portion 56a is arranged at the bifurcated tip portion of the tweezers-shaped mounting member 18, and the tip portions are naturally narrower than the width of the second locked piece 48 of the breaker 16. have. Therefore, the breaker 16 is attached even more firmly in a state where the second locked piece 48 is sandwiched between the L-shaped portions 56a and the elastic force is applied.
Further, a slit is formed between the lower intermediate portion 56b connected to the L-shaped portion 56a of the mounting member 18 and the upper tip portion 54. Therefore, in the mounting member 18, the portion responsible for locking to the breaker 16 and the portion responsible for engaging with the notch 30 can be physically separated, and both locking and engagement can be made more reliable. can do.
Further, the upper tip portion 54 is arranged other than the bent portion 50 of the base end portion of the mounting member 18, and the notch portion 30 is at a position where the L-shaped portion 56a is locked to the second locked piece 48. It has a second tapered portion 30d that engages with the upper tip portion. Therefore, the tweezers-shaped mounting member 18 can be engaged with the second tapered portion 30d of the notch portion 30 that fits the front-spreading portion, the mounting strength becomes better, and the mounting member 18 and the breaker 16 It becomes easier to put on and take off.
In addition, the cutout portion 30 has a first tapered portion 30b that engages with the upper tip portion 54 at a position where the L-shaped portion 56a does not engage with the second locked piece 48. Therefore, the operator can make the mounting member 18 stand by at the first tapered portion 30b when the breaker 16 is attached / detached, and can easily handle the breaker 16 with both hands without holding the mounting member 18 with one hand.

The breaker mounting structure 1 has the following modification examples as appropriate.
The shape, size, material, etc. of the mounting member 18 can be changed in various ways. For example, the L-shaped portion 56a may be a U-shaped portion having a U-shaped cross section or an I-shaped portion having an I-shaped cross section. Further, at least a part of the upper tip portion 54 and at least a part of the lower tip portion 56 may be integrated. Further, the upper tip portion 54 may be provided with an L-shaped portion 56a for gripping the second locked piece 48 of the breaker 16, and the lower tip portion 56 may be provided with an engaging portion with respect to the notch portion 30. good. Furthermore, the mounting member 18 may have a left-right asymmetric shape. In addition, the mounting member 18 may be made of synthetic resin.
At least one of the first tapered portion 30b and the connecting portion 30c as the mounting standby tapered portion may be omitted.
The bus bars 8 and 14 may be free of branching portions 32 and 34.
A concave portion is provided instead of the branch-shaped portions 32 and 34, and the power supply side connection terminal 42 is a convex portion that enters the concave portion, or a locking piece having a convex portion instead of the locking piece 26 having a square cross section. In addition to being provided, a recess for receiving the convex portion is provided in place of the first locked piece 44, and the second locked piece 48 is provided as a recess for receiving a pair of tips of the mounting member 18. The unevenness may be appropriately replaced in locking and engaging. Further, various types of locking and engagement may be performed by convex portions having claws that engage with each other.
At least one of the power supply side connection terminal 42 and the load side connection terminal 46 may be arranged one above the other, or five or less or seven or more breakers 16 may be placed on one panel 2. Arrangement of various members and parts, such as placing one or three or more panels 2 on the base 4, making the base 4 a series or omitting it, or providing three or more types of bus bars. And the number of installations can be changed as appropriate.

1 ... Breaker mounting structure, 2 ... Panel, 16 ... Breaker, 18 ... Mounting member, 30 ... Notch, 30b ... 1st taper part (tapered part for mounting standby), 30d ... 2nd taper Part (tapered part for mounting), 48 ... 2nd locked piece (locked part), 50 ... bent part, 54 ... upper tip part (engaging part), 56a ... L-shaped part ( Locking part), 56a ... Lower middle part.

Claims (4)

A distribution board panel with a notch and
A breaker with a locked part and
A tweezers-shaped mounting member having a locking portion that engages with the locked portion and an engaging portion that engages with the notch portion.
Equipped with a,
The locking portion is arranged at the tip end portion of the mounting member.
The breaker mounting structure of the distribution board , wherein the tip portion has a space narrower than the width of the locked portion in a natural state. A distribution board panel with a notch and
A breaker with a locked part and
A tweezers-shaped mounting member having a locking portion that engages with the locked portion and an engaging portion that engages with the notch portion.
Is equipped with
The locking portion or between the portion and the engaging portion connected thereto, the breaker mounting structure of panelboard, wherein a slit is formed. A distribution board panel with a notch and
A breaker with a locked part and
A tweezers-shaped mounting member having a locking portion that engages with the locked portion and an engaging portion that engages with the notch portion.
Is equipped with
The engaging portion is arranged in a portion other than the bent portion of the mounting member.
The cutout, distribution board breaker mounting structure characterized in that it has a mounting tapered section to be engaged with the engagement portion at a position where the locking portion is engaged with the engaged portion .. The third aspect of the present invention, wherein the cutout portion has a taper portion for mounting standby that engages with the engaging portion at a position where the locking portion does not engage with the locked portion. Breaker mounting structure of distribution board.

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