JP2019083598A - Breaker mounting structure of distribution board - Google Patents

Abstract

To provide a breaker mounting structure of a distribution board to which the breaker is easily detachable and in which a sufficient fixing power at a time of mounting is secured and which is low in cost.SOLUTION: A breaker mounting structure 1 includes: a panel 2 of a distribution board having a notch 30; a breaker 16 having a second piece 48 to be locked; a tweezers-like mounting member 18 having an L-shaped portion 56a locked to the second piece 48 to be locked and an upper end 54 engaged to the notch 30. The L-shaped portion 56a is disposed at a bifurcated end of the tweezers-like mounting member 18. A tip thereof has an interval narrower than a width of the second piece 48 to be locked of the breaker 16 in natural conditions.SELECTED DRAWING: Figure 2

Description

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

In a breaker mounting structure of a distribution board according to JP 2001-327009A (patent document 1), a panel 1 of the distribution board is provided with a notch 3 for receiving a resinous attachment 4 having an insertion piece 6 and a knob 5 The tongue piece 11 and the L-shaped piece 12 for holding the mounting part 4 in parallel, and the hooking piece 14 for holding the breaker 2. The knob 5 at the base end of the mounting part 4 is a breaker A locking recess 8 for locking 2 is formed, and at the tip of the insertion piece 6 of the mounting component 4, a retaining portion 10 that is locked from the rear side to the projection 9 of the panel 1 is formed.
Moreover, the retaining structure of the plug-in breaker according to Japanese Patent Application Laid-Open No. 2004-87279 (Patent Document 2) includes the mounting plate 1 having the hooking portion 15, the plurality of conductive bars 2-4, and the conductive bars 2-4. The receiving blades 12 and 13 to be inserted and connected are disposed on the front surface, and the receiving blades 12 and 13 are hooked on the hook portion 15 in a state of being inserted and connected to the conductive bars 2 to 4 and mounted on the mounting plate 1 Plug-in breaker 5, hanging piece 25 hanging down on the opposite side to the mounting side, and stopper portion 26 which can be advanced and retracted between the position where it protrudes and the position where it does not protrude with respect to the mounting side surface of mounting plate 1 It has the retaining member 27 attached to the hanging piece 25, and the stopper 26 is engaged with the plug-in breaker 5 by moving the retaining member 27. The hanging piece 25 and the retaining member 27 are provided with a concavo-convex engaging portion 34 that prevents the stopper portion 26 from moving from the position where it is locked to the plug-in breaker 5.

JP, 2001-327009, A JP 2004-87279 A

In each of the above-mentioned structures, although the breaker can be easily attached and detached by the operation of the attachment component 4 and the retaining member 27, whether the main fixing force of the breaker is the locking force to the projection 9 of the retaining portion 10, Alternatively, there is a limit to the improvement in consideration of the engagement force of the concavo-convex engaging portion 34 and considering that the mounting space is limited.
The main object of the present invention is to provide a low-cost power distribution board breaker mounting structure in which the breaker is easily removable and the fixing force at the time of mounting is sufficiently ensured.

In order to achieve the above object, the invention according to claim 1 is a panel of a distribution board having a notch portion, a breaker having a locked portion, and a locking portion locked to the locked portion, And a tweezers-like mounting member having an engagement portion engaged with the notch.
The invention according to claim 2 is characterized in that, in the above-mentioned invention, the locking portion is disposed at the tip portion of the mounting member, and the tip portion has a gap narrower than the width of the locked portion in a natural state. It is characterized by having.
The invention according to claim 3 is characterized in that, in the above-mentioned invention, a slit is formed between the locking portion or a portion connected thereto and the engaging portion.
The invention according to claim 4 is characterized in that, in the above-mentioned invention, the engaging portion is disposed other than the bent portion of the mounting member, and the notch portion is engaged with the engaged portion by the engaging portion. At a position where the mounting taper portion is engaged with the engagement portion.
The invention according to claim 5 is characterized in that, in the above-mentioned invention, the notch portion has a mounting standby taper portion which engages with the engagement portion at a position where the locking portion does not lock to the locked portion. It is characterized by

  The main effect of the present invention is to provide a breaker mounting structure of a distribution board which is easily detachable and has a sufficient securing power at the time of mounting, and is low in cost.

It is a perspective view of a breaker attachment structure concerning the present invention. It is a partial isolation perspective view of FIG. It is a top view of FIG. It is the sectional view on the AA line (internal structure abbreviation | omission) of FIG. It is a perspective view of the attachment member of FIG.

Hereinafter, embodiments according to the present invention and modifications thereof will be appropriately described based on the drawings. The present invention is not limited to the following embodiments and modifications.
The front and rear, upper and lower, right and left in the said form or example of a change are defined for convenience of explanation, and may change with the situation of installation, the position of a movable or posture changeable member, posture, etc.

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 includes a pair of plate-like bases 4 mounted on the upper surface side in a state where two plate-like panels 2 are arranged back and forth, and a base so as to cross between the bases 4 via the left and right bases 6. 4, a pair of front and rear busbars 8 mounted on the upper side between the front and rear panels 2, and a pedestal 10 having a U-shaped side view attached to the top of the left and right ends of each base 6 and busbars 8 And a bus bar 14 attached to the rack 10 via the support plate 12 and disposed above the bus bars 8, and a mounting member 18 prepared for each breaker 16.

FIG. 2 is a perspective view of the rear panel 2 and three breakers 16 (one of which is separated) and four mounting members 18 according to the breaker mounting structure 1, and FIG. FIG. 4 is a top view of FIG. 2, FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 with the internal structure omitted, and FIG. 5 is a perspective view of a mounting member 18.
The front panel 2 is the same as the rear panel 2 except for the arrangement in line symmetry with respect to the lateral generatrix bar 14, and therefore the description thereof is omitted. The same applies to the breaker 16 and the mounting member 18 attached to the front panel 2.

The front side of the rear panel 2 is the first leg 20 bent downward (the standing portion 20a) and the front (the contact portion 20b), and the rear side of the panel 2 is the lower (elevated) The second leg 22 is bent in the portion 22a) and the rear (contact portion 22b). The panel 2 is screwed in contact with the base 4 at the contact portions 20 b and 22 b of the first leg 20 and the second leg 22, and the rising portions 20 a of the first leg 20 and the second leg 22 are screwed. It is separated from the base 4 by 22a.
Between the 1st leg 20 and the 2nd leg 22 in panel 2, it spreads to the front and back, right and left, and it has become mounting part 24 which can mount a plurality (six pieces) of breakers 16.

  A plurality of (six pieces) locking pieces 26 in a front view shape L-shaped protruding in the upper direction from the placement portion 24 are provided on the rising portion 20 a of the first leg portion 20 so as to be aligned in the left and right. The locking piece 26 is formed to be continuous to the rising portion 20 a by cutting and raising a part of the mounting portion 24.

Further, six notches 30 are provided at a corner between the rising portion 22 a of the second leg 22 and the placement portion 24 or the periphery thereof.
Each notch portion 30 is adjacent to the rectangular portion 30a disposed in the standing portion 22a and the rectangular portion 30a in the placement portion 24 and extends to the left and right as it goes to the front, and the maximum width about the width of the rectangular portion 30a The first taper portion 30b as a mounting standby taper portion which narrows in reverse after becoming, the communication portion 30c of a fixed width disposed on the front side, and the same are disposed on the front side of the first taper portion 30b A second tapered portion 30d as a mounting tapered portion and an end portion 30e which is disposed on the front side and which is similar to the connecting portion 30c except for a dead end at the front end portion are provided in series.

Each bus bar 8 is provided with six branches 32 projecting upward and outward. Each branch 32 is shown only at its tip in FIG.
Also, the bus bar 14 has a total of twelve branches 34 projecting downward and outward, six projecting downward and forward, and six projecting downward and backward.

  Each breaker 16 includes a substantially rectangular shaped breaker main body 40, a pair of left and right concave power source side connection terminals 42 (only the front breakers 16 are shown in FIG. 1) disposed at the front of the breaker main body 40, and the lower part thereof. A first engaged piece 44 projecting forward from a breaker body 40 formed at the lower portion of the breaker body 40, and a pair of left and right concave load side connection terminals 46 disposed at the rear of the breaker body 40; A second engaged piece 48 serving as an engaged portion that protrudes rearward from the breaker main body 40 formed on the lower side of the breaker main body 40 at the lower side thereof.

Each mounting member 18 is a metal tweezer-shaped leaf spring, has a symmetrical shape, and has a bending portion 50, a pair of plate-like base portions 52 extending from there and extending forwardly, and respective upper portions thereof from the top Upper end 54 as an engaging portion that bends inward and bends inward at the front end, and from the lower portion of each base 52 to extend forward and inward similarly to the upper end 54 and further extending upward and bending horizontally inward And a lower end portion 56 having an L-shaped portion 56a (locking portion) having a view reverse L-shape.
Between the upper end portion 54 and the lower end portion 56 (lower intermediate portion 56b) excluding the L-shaped portion 56a, a slit having an upper and lower width slightly thinner than the thickness of the panel 2 (mounting portion 24) ing.
The outer shape of the upper end 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 30, and more specifically, the first tapered portion 30b and the second tapered portion 30d It is slightly more widely spread than the shape of. That is, similar to the first tapered portion 30b and the second tapered portion 30d, the outer shape of the upper end portion 54 and the lower intermediate portion 56b is such that the width in the left-right direction is wider toward the front except for the end 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 as the portion having the maximum width in the first tapered portion 30b and the second tapered portion 30d, and is slightly larger in the lateral direction.
When the attachment 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 the second engaged 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 portions 56 a in the left-right direction is slightly smaller than the distance between the end portions 30 e of the notches 30 in the left-right direction.

The breaker 16 is attached to and detached from the mounting portion 24 of the panel 2 as follows, for example.
The operator inserts the mounting member 18 forward from the rectangular portion 30a in the notch 30 to which the breaker 16 is attached, and arranges the lower portion of the upper tip portion 54 in the first tapered portion 30b. The mounting member 18 further exerts an external force by exhibiting a pressing action on the first tapered portion 30 b outward in the left-right direction with respect to the first tapered portion 30 b by its elasticity (particularly at the rear of the bent portion 50 and the upper tip portion 54). It stays at the position of the first taper portion 30b unless it is added.

Then, first, the operator places the first engaged piece 44 of the breaker 16 into the engaged piece 26 of the panel 2 or arranges it in the adjacent part thereof, and corresponds the second engaged piece 48. It arrange | positions on the front side of the notch part 30 (refer the breaker 16 on the left side in FIG. 2, FIG. 3).
Next, the worker causes the breaker 16 and the attachment member 18 to be in such a state that the first locked piece 44 enters the locking piece 26 and the second locked piece 48 enters between the L-shaped portions 56a, Move it forward (see the center breaker 16 in the figure). The pair of upper end portions 54 of the attachment member 18 is compressed inwardly toward each other by the connecting portion 30 c of the notch 30, and the pair of lower end portions 56 is the second engaged between the L-shaped portions 56 a. When the stop piece 48 is inserted, it slightly spreads under the notch 30. In addition, one end of the power supply side connection terminal 42 approaches the tip end of one branch portion 32 in the bus bar 8, and the other power side is connected to the tip end of one branch portion 34 in the bus bar 14. The connection terminal 42 approaches.
The operator pushes the breaker 16 and the attachment member 18 forward while the entire first engaged piece 44 enters the engagement piece 26 and the L-shaped portions 56a of the attachment member 18 and the second engaged member The piece 48 is positioned at the end 30e of the notch 30 and continues until the upper end 54 is positioned within the second tapered portion 30d, completing the attachment of the breaker 16 to the panel 2 (the right breaker in FIG. 16).

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

When removing the breaker 16, the operator retracts the attachment member 18 until the upper end 54 enters the first tapered portion 30 b or passes through the rectangular portion 30 a and exits the notch 30 to form the L-shaped portion 56 a. Separates the second locked piece 48 of the breaker 16 and further retracts the breaker 16 so that the first locked piece 44 separates from the locked piece 26 of the panel 2, and the power supply side connection terminal 42. Are separated from the tips of the branches 32, 34.
The operator may pinch the upper end portion 54 when the mounting member 18 is retracted, in which case the mounting member 18 can be easily moved after the connecting portion 30c. Also, 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 engaged piece 48, and an L-shaped portion engaged with the second engaged piece 48. A tweezers-like mounting member 18 having an upper end 54 which engages with the notch 30; Therefore, the worker simply engages the upper end portion 54 of the mounting member 18 with the notch 30 of the panel 2 and locks the L-shaped portion 56 a with the second engaged piece 48 of the breaker 16. 16 can be easily attached to the panel, and the breaker 16 can be easily removed simply by releasing the lock of the L-shaped portion 56a to the second engaged piece 48. The engagement of the mounting member 18 for mounting such a 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 resiliently engaged or engaged with the second engaged piece 48 of the breaker 16 and the notch 30 of the panel 2, the fixing force at the time of attachment of the breaker 16 is sufficiently Secured.
The L-shaped portion 56a is disposed at the bifurcated end of the attachment member 18 in the form of a tweezers, and the end has an interval narrower than the width of the second engaged piece 48 of the breaker 16 in the natural state. have. Therefore, the breaker 16 is attached more firmly in a state where the second engaged piece 48 is sandwiched by the L-shaped portion 56 a and the elastic force is applied.
Furthermore, a slit is formed between the lower intermediate portion 56 b connected to the L-shaped portion 56 a of the mounting member 18 and the upper tip portion 54. Therefore, in the mounting member 18, the portion responsible for locking the breaker 16 and the portion responsible for engagement with the notch 30 can be physically separated, and more secure in both locking and engagement. can do.
Furthermore, the upper end portion 54 is disposed at a position other than the bending portion 50 of the proximal end portion of the mounting member 18, and the notch 30 is at a position where the L-shaped portion 56 a is engaged with the second engaged piece 48. It has the 2nd taper part 30d engaged with an upper tip part. Therefore, the tweezers-like mounting member 18 can be engaged at the second tapered portion 30d of the notch 30 fitted to the front-spreading portion, and the mounting strength is further improved. It becomes easier to attach and detach.
In addition, the notch 30 has a first tapered portion 30 b that engages with the upper end portion 54 at a position where the L-shaped portion 56 a does not lock to the second engaged piece 48. Therefore, when attaching and detaching the breaker 16, the worker can stand the attaching member 18 in the first tapered portion 30 b, and can easily handle the breaker 16 with both hands without holding the attaching member 18 with one hand.

The breaker mounting structure 1 has the following modification as appropriate.
The shape, size, material, etc. of the mounting member 18 can be variously changed. For example, the L-shaped portion 56a may be a U-shaped portion having a U-shaped cross section, or may be an I-shaped portion having an I-shaped cross section. Also, at least a portion of the upper tip portion 54 and at least a portion of the lower tip portion 56 may be integral. Furthermore, an L-shaped portion 56a for gripping the second engaged piece 48 of the breaker 16 may be provided in the upper end portion 54, and an engagement portion for the notch 30 may be provided in the lower end portion 56. good. Furthermore, the mounting member 18 may have an asymmetrical shape. In addition, the mounting member 18 may be made of synthetic resin.
At least one of the first taper portion 30b as the attachment standby taper portion and the communication portion 30c may be omitted.
The bus bars 8, 14 may not have the branches 32, 34.
Instead of the branch portions 32, 34, a recess is provided and the power supply side connection terminal 42 is a protrusion into which the recess is inserted, or a locking piece having a protrusion instead of the locking piece 26 having a V-shaped cross section In addition to the first hooked piece 44, a recess is provided for receiving the projection, and the second hooked piece 48 is used as a recess for receiving the pair of tips of the mounting member 18, etc. The unevenness may be appropriately replaced in locking or engagement. In addition, various types of locking and engagement may be performed by convex portions having claws engaged with each other.
At least one of the power supply side connection terminal 42 and the load side connection terminal 46 is vertically aligned, or five or less or seven or more breakers 16 can be mounted on one panel 2; Arrangement of various members and parts, such as placing one or three or more panels 2 on the base 4, forming the series 4 as the series 4 or omitting them, providing three or more bus bars, etc. The number of installation and the like can be changed as appropriate.

  1 · · · Breaker mounting structure · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · notch 30b · · · 1st taper portion (tapered portion for mounting standby), 30d · · 2nd taper Part (taper part for attachment), 48 · · · 2nd locked piece (locking portion), 50 · · · bent portion 54 · · upper tip portion (engagement portion), 56a · · L-shaped portion Locking portion), 56a · · · lower middle portion.

Claims (5)

Panel of distribution board with notch,
A breaker having a locked portion;
A tweezers-like mounting member having a locking portion to be locked to the locked portion and an engaging portion to be engaged to the cutout portion;
Breaker mounting structure of the distribution board characterized by having. The locking portion is disposed at the tip of the mounting member,
The breaker mounting structure of a distribution board according to claim 1, wherein the tip end portion has a gap narrower than the width of the engaged portion in a natural state. The breaker mounting structure of a distribution board according to claim 1 or 2, wherein a slit is formed between the locking portion or a portion connected to the locking portion and the engaging portion. The engagement portion is disposed other than the bent portion of the attachment member,
4. The mounting structure according to claim 1, wherein the notch portion has a mounting taper portion that engages with the engaging portion at a position where the locking portion locks to the locked portion. Breaker mounting structure of the distribution board according to any one of the above. The said notch part has an attachment standby taper part engaged with the said engaging part in the position which the said latching | locking part does not latch to the said to-be-locked part. Breaker mounting structure of distribution board.

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