JP2008211875A - Distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution board preventing branch switches from rattling in the longitudinal direction when installed. <P>SOLUTION: The distribution board comprises: a plurality of branch switches 4 accommodated in a box; an installation base 9 at which the branch switches 4 are installed; and a locking member 10 which is turnably pivoted to the installation base 9, and regulates the movement of the branch switches 4. Blade receivers 16, to which conductive bars 14 are inserted and connected are arranged at longitudinal one ends of the branch switches 4, and locking recesses 4c are formed at the other ends. The locking member 10 has a main body 10a, and locking piece 10b which protrudes upward, and also protrudes outside at their tip sides is integrally formed at end rims of the main body 10a. The locking member 10 is turnably pivoted to supporting piece 9b of the installation base 9, and when the locking piece 10b is inserted into the locking recesses 4c by turning the locking member 10 in while the branch switches 4 are installed, the branch switches 4 are held to be elastically energized by spring body 10e arranged at tip sides of the locking piece 10b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a distribution board.

Conventionally, there has been a distribution board in which a circuit breaker is inserted and connected to a conductive bar (see, for example, Patent Document 1). This distribution board is provided with a plurality of long conductive bars arranged side by side in the front-rear direction (depth direction of the distribution board) and a receiving blade that is inserted and connected to the conductive bar from the short side on one end side. A plurality of circuit breakers having a hooked portion formed on the other end side, and a base on which a hooking portion hooked on the hooked portion is formed and the circuit breaker is attached. The hooking portion is substantially L-shaped, and the hooking piece is integrally formed on the tip side. The hooking portion is provided with a hooking recess in which the hooking piece is inserted at a portion corresponding to the hooking piece. And when each receiving blade of the circuit breaker is inserted and connected to the corresponding conductive bar from the short direction of the conductive bar and the hooking piece is inserted into the hooking concave part, the hooking piece comes into contact with the end surface on the back side of the hooking concave part, Movement of the circuit breaker to the front side is restricted.
Japanese Patent Laid-Open No. 2003-164021 (pages 3 to 7 and FIGS. 1 to 9)

  In the distribution board shown in the above-mentioned Patent Document 1, when a deviation occurs in the height position of the hooking piece and the hooking recess due to a manufacturing error or the like, the circuit breaker is attached between the hooking piece and the hooking recess. There was a gap in the front-rear direction, and the movement of the circuit breaker to the front side could not be sufficiently restricted, and the circuit breaker could rattle in the front-rear direction.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a distribution board in which backlash in the front-rear direction of a branch switch is suppressed in an attached state.

  The invention of claim 1 includes a mounting plate on which a branch switch is disposed on the front side, and the branch switch is provided with an engagement recess on one side in a direction connecting two opposing surfaces of the switch body. The other side is provided with a movement restricting portion that engages with an engaging protrusion provided on the mounting plate and restricts the movement of the branch switch to the other side, and the mounting plate engages with the engaging recess. An engagement that has a piece and rotates between an attachment position that allows the engagement piece to enter the engagement recess along a plane parallel to the attachment plate and a removal position that causes the engagement piece to exit from the engagement recess. A member is provided, and the engaging member is provided with an elastic spring portion that applies an elastic biasing force toward the mounting plate to the branch switch when the engaging piece enters the engaging recess.

  According to a second aspect of the present invention, the engaging member has a shaft portion for pivotally supporting the mounting plate, and the elastic spring portion is provided from the spring body that gives the shaft portion an elastic biasing force toward the back side of the mounting plate. It is characterized by becoming.

  The invention according to claim 3 is characterized in that the elastic spring portion is formed of a spring body provided at a portion of the engagement piece that contacts the engagement recess.

  According to the first aspect of the present invention, even when the height position of the engagement piece and the engagement recess is shifted due to a manufacturing error or the like, by providing the elastic spring portion on the engagement member, the branch opening / closing in the mounted state Since the elastic biasing force to the mounting plate side can be given to the device, there is an effect that the branch switch can be held without looseness with the mounting plate.

  According to the second aspect of the present invention, in the mounted state in which the engaging piece is engaged with the engaging recess by providing the spring body that elastically biases the shaft portion on the back side of the mounting plate, the mounting plate is attached to the branch switch. Since the side elastic biasing force can be applied, there is an effect that the branch switch can be held without rattling between the mounting plate and the mounting plate.

  According to the invention of claim 3, by providing the spring body at the portion of the engagement piece that comes into contact with the engagement recess, an elastic biasing force on the mounting plate side can be applied to the branch switch by the spring body in the mounted state. Therefore, there exists an effect that a branch switch can be hold | maintained without looseness between attachment plates. In addition, since the spring body contacts the engagement recess only when the engagement piece enters the engagement recess, the wear of the spring body can be suppressed, and rattling of the branch switch can be reliably suppressed in the mounted state. There is an effect that can be.

(First embodiment)
A first embodiment will be described with reference to FIGS. The distribution board A of this embodiment is attached to a construction material (for example, a wall surface, etc.), and a main switch 3 or a plurality (16 in FIG. 2) of branch switches 4 housed therein are provided as necessary. Turned on / off. In the following description, unless otherwise specified, the vertical and horizontal directions are defined in the direction shown in FIG. 2, and the front of FIG. Therefore, the lower side of FIG.

  As shown in FIGS. 2 and 3, the distribution board A of the present embodiment is a vertically long back plate 1a having a substantially rectangular plate shape and is vertically long and is attached to the back plate 1a along the outer edge of the back plate 1a. A box 1 integrally formed with a frame 1b, a main switch 3 and a plurality of branch switches 4 housed in the box 1, a mount 9 to which the branch switch 4 is mounted, and a mount 9, an engaging member 10 that is pivotally supported by 9 and restricts the movement of the branch switch 4, and a front side of the main switch 3 and the branch switch 4 that is pivotally supported at one end side of the box body 1. And a cover 2 for covering.

  First, the back plate 1a will be described with reference to FIGS. The back plate 1a has a vertically long, substantially rectangular plate shape, and vertically long mounting members 5 and 5 having a U-shaped cross-sectional view are attached to both ends in the left-right direction using screws 11 respectively. Each mounting member 5 is provided with a plurality of mounting holes 5a along the longitudinal direction at regular intervals, and a substantially rectangular plate shape for mounting the main switch 3 above the mounting members 5 and 5. The mounting base 6 is attached using screws 15. In addition, a mounting base 7 having a rectangular plate shape in plan view is attached to the lower position of both attachment members 5 and 5 using screws 15. On the front side of the mounting base 7, three conductive bars 14 are arranged at different heights in the front-rear direction along the vertical direction at the center position in the left-right direction. Mounting bases 9 and 9 to which the device 4 is attached are respectively attached using screws 15.

  Here, the mounting base 9 is demonstrated based on FIG.1 and FIG.5. The mounting base 9 has a U-shaped main base 9a, and mounting pieces 9c and 9c extending inwardly from the lower ends of both sides of the main base 9a are bent. 9 c is fixed to the mounting base 7 with a screw 15. Further, on the conductive bar 14 side of the main base 9a, an engaging protruding piece 9e is formed by cutting and raising the front end side and the front end side being bent obliquely forward. On the opposite side of the main base 9a to the conductive bar 14, A support piece 9b provided with a shaft hole 9d for pivotally supporting the engaging member 10 is folded in two. A plurality (8 in this embodiment) of these engaging protrusions 9e and support pieces 9b are provided at the mounting interval of the branch switch 4 along the longitudinal direction of the conductive bar 14. Here, a mounting plate is formed on the upper surface of the main base 9a.

  Next, the main switch 3 will be described with reference to FIG. The trunk switch 3 is formed in a vertically long, substantially rectangular parallelepiped shape, and a plurality of power supply side terminals 3b and load side terminals 3c (each three in FIG. 2) are provided on both ends in the longitudinal direction on the front side. Yes. In addition, at a substantially central position on the front side of the main switch 3, an internal contact (not shown) is turned on / off to conduct or open between each power supply side terminal 3 b and the corresponding load side terminal 3 c. An operation knob 3a is provided. A primary power source (not shown) is connected to each power supply side terminal 3b, and one end side of L-shaped conductive members 8a to 8c in plan view is connected to each load side terminal 3c using a screw 12, respectively. In addition, the conductive members 8a and 8c are bent at midway positions so that the height of the other end is matched with the corresponding height of the conductive bar 14, and the other ends of the conductive members 8a to 8c are respectively corresponding to the corresponding conductive. It is connected to the bar 14 using screws 13. The main switch 3 is fixed to the mounting base 6 using, for example, screws.

  Furthermore, the branch switch 4 is demonstrated based on FIGS. 1-3. The branch switch 4 has a substantially rectangular parallelepiped shape and a switch body 4f formed in one distribution board agreement size, and a substantially rectangular parallelepiped shape and a plug that is detachably attached to the switch body 4f. And an in-adapter 4g. The switch body 4f is provided with two load-side terminals 4e on one end side in the left-right direction (right side in FIG. 1) on the front side, and a power-side terminal corresponding to the load-side terminal 4e on the other end side (left side in FIG. 1). (Not shown) is provided. On the other hand, the plug-in adapter 4g is provided with three grooves 4b at height positions corresponding to the three conductive bars 14 on the side surface on one end side in the left-right direction (left side in FIG. 1), and a pair of upper four locations. Blade receivers 16 and 16 are respectively disposed. Each blade receiver 16 is provided on one end side of a conductive member (not shown) housed in the adapter, and an insertion terminal (not shown) on the other end side is used as a corresponding power supply side terminal of the switch body 4f. By fixing with screws, each blade receiver 16 and the power supply side terminal are electrically connected.

  In addition, the switch body 4f is provided with an engagement recess 4c that engages the engagement member 10 below the side surface on the load side terminal 4e side, and the engagement base 9 is engaged below the side surface on the power source side terminal side. A locking recess (movement restricting portion) 4d for locking the mating protrusion 9e is provided. Further, at a substantially central position on the front side of the switch body 4f, an internal contact (not shown) is turned on / off to conduct or open between each blade receiver 16 and the corresponding load side terminal 4e. An operation knob 4a is provided. As shown in FIG. 2, the branch switches 4 are arranged in two rows on the left and right sides of the conductive bar 14 in the left-right direction, and a plurality (eight in FIG. 2) are arranged along the conductive bar 14 in the vertical direction. It is installed. In this embodiment, the switch body 4f and the plug-in adapter 4g are provided separately, but a plug-in type branch opening / closing provided with a blade receiver 16 connected to the conductive bar 14 inside the switch body. It is good also as a vessel.

  Here, the engaging member 10 will be described with reference to FIGS. 1 and 4. The engaging member 10 is made of, for example, a synthetic resin and has a substantially disc-shaped main body portion 10a. A plus-shaped driver groove 10g is provided at a substantially central position on the upper surface of the main body portion 10a. In addition, an engagement piece 10b having a substantially L-shape in a side view is provided integrally on the edge of the upper surface of the main body 10a. The engagement piece 10b protrudes upward and protrudes outward in a direction substantially parallel to the upper surface of the main body 10a. It has been. Furthermore, an inclined surface 10f that is inclined obliquely downward toward the inside is formed at one end edge (on the left side of FIG. 4A) on the distal end side of the engagement piece 10b, and in the vicinity of the inclined piece 10f. Is substantially provided with a substantially arc-shaped spring body (elastic spring portion) 10e. By providing the inclined surface 10f on the distal end side of the engagement piece 10b, the engagement piece 10b can be easily inserted without being caught when inserted into the engagement recess 4c.

  On the other hand, a substantially disc-shaped shaft portion 10j is integrally formed on the lower surface of the main body portion 10a, and a projecting piece 10c is provided on the lower surface of the shaft portion 10j. It has been. Further, a pair of retaining pieces 10d and 10d are integrally provided on the tip side of the projecting piece 10c so as to extend obliquely upward from both sides with the projecting piece 10c in between, and the distance between the projecting pieces 10c increases toward the main body 10a side. It has been. When the projecting piece 10c and both retaining pieces 10d and 10d are protruded downward through the shaft hole 9d provided in the support piece 9b of the mounting base 9, and the shaft portion 10j is pivotally supported by the shaft hole 9d, the engaging member 10 is moved. It is attached to the support piece 9b so as to be rotatable. In the mounted state, since the leading end sides of both retaining pieces 10d, 10d are spread away from the projecting piece 10c, even when an upward force is applied to the engaging member 10, the retaining pieces 10d, 10d The distal end side can contact the lower surface of the support piece 9b to prevent the engagement member 10 from coming off.

  Next, the procedure for installing the branch switch 4 will be described with reference to FIG. First, the branch switch 4 is placed on the upper surface of the main base 9a of the mounting base 9 (see FIG. 1A). In this state, since the engagement piece 10b of the engagement member 10 is disposed rightward, the engagement piece 10b does not interfere when the branch switch 4 is placed. Next, the branch switch 4 is slid to the left side (conductive bar 14 side) along the upper surface of the main base 9a, and the engaging protrusion 9e is locked to the locking recess 4d, and each conductive bar 14 is connected to the corresponding blade. The holders 16 are clamped (see FIG. 1B). When a plus driver (not shown) is inserted into the driver groove 10g of the engaging member 10 and rotated clockwise, the engaging member 10 rotates along the upper surface of the support piece 9b, and the branch switch 4 is engaged. The engagement piece 10b is inserted into the recess 4c, and the installation of the branch switch 4 is completed (see FIG. 1C). The branch switch 4 is held from both the left and right sides by the engagement protrusion 9e and the engagement member 10 in the completed state, and movement of the branch switch 4 in the left-right direction is restricted.

  In this distribution board A, by providing the spring body 10e at the portion of the engagement piece 10b that contacts the engagement recess 4c, the spring body 10e elastically contacts the lower surface of the engagement recess 4c in the mounted state, and the branch switch 4 Can be elastically biased downward, so that the branch switch 4 can be held between the mounting base 9 without rattling. Further, since the spring body 10e contacts the engagement recess 4c only when the engagement piece 10b is entered into the engagement recess 4c of the branch switch 4, it is possible to suppress wear of the spring body 10e, and in the mounted state. Shaking of the branch switch 4 can be reliably suppressed.

  In the present embodiment, the spring body 10e is integrally formed on the distal end side of the engagement piece 10b. However, the spring body 10e is not limited to the present embodiment, and for example, a spring steel or the like is used separately. It may be formed and attached to the engaging piece 10b.

  Further, the shapes of the engagement recess 4c and the engagement member 10 are not limited to the present embodiment, and may be appropriately designed according to the position where the branch switch 4 is disposed.

(Second Embodiment)
A second embodiment will be described with reference to FIG. The distribution board A of the present embodiment includes a box body 1, a main switch 3 and a plurality of branch switches 4, a mounting base 9, an engagement member 10, and a lid body 2, and a spring body. The same configuration as that of the first embodiment except that the retaining pieces 10h and 10h that provide elastic biasing force toward the back side to the shaft portion 10j instead of 10e are also used as the elastic spring portion. Elements are denoted by the same reference numerals and description thereof is omitted.

  The retaining pieces 10h and 10h are made of, for example, a synthetic resin, and extend from the distal end side of the projecting piece 10c toward the main body 10a side. The engaging member 10 is pivotally supported on the support piece 9b of the mounting base 9. In this state, as shown in FIG. 6A, the tip portions of both retaining pieces 10h and 10h are in contact with the lower surface of the support piece 9b. In the state where the engagement piece 10b is inserted into the engagement recess 4c of the branch switch 4, as shown in FIG. 6 (b), the leading end sides of the both retaining pieces 10h and 10h are formed in a generally letter shape toward the outside. It bends and the lower surface of the engagement piece 10b and the lower surface of the engagement recessed part 4c are contact | abutting.

  In this distribution board A, by providing an elastic spring portion on the projecting piece 10c, the branch switch 4 is elastically biased downward in an attached state in which the lower surface of the engaging piece 10b is in contact with the lower surface of the engaging recess 4c. Therefore, it is possible to hold the branch switch 4 without rattling between the mounting base 9 and the branch switch 4. Moreover, the manufacturing cost can be reduced by using the elastic spring portion as both the retaining pieces 10h and 10h.

(A)-(c) is explanatory drawing explaining the procedure which attaches a branch switch to the electricity distribution panel of 1st Embodiment. It is a front view of the state which removed the cover body same as the above. It is XX sectional drawing same as the above. The engaging member used for the above is shown, (a) is a front view, (b) is a side view, (c) is a top view, (d) is a detailed view of a Y portion, and (e) is a ZZ cross-sectional view. . The mounting base used for the above is shown, (a) is a top view that can be partially broken, and (b) is a side view that can be partially broken. (A), (b) is a principal part expanded sectional view explaining the electricity distribution panel of 2nd Embodiment.

Explanation of symbols

4 Branch switch 4c Engaging recess 4d Locking recess (movement restricting part)
9c Engagement protrusion 10 Engagement member 10b Engagement piece 10e Spring body (elastic spring part)
A Distribution board

Claims (3)

  The branch switch is provided with a mounting plate on the front side, and the branch switch is provided with an engagement recess on one side in a direction connecting two opposing surfaces of the switch body and the mounting plate on the other side. A movement restricting portion that engages with the engaging protrusion provided on the other side and restricts the movement of the branch switch to the other side is provided, and the mounting plate has an engaging piece that engages with the engaging recess. Then, a mechanism that rotates between an attachment position where the engagement piece enters the engagement recess and a removal position where the engagement piece retracts from the engagement recess along a plane parallel to the attachment plate. An engaging member is provided, and the engaging member is provided with an elastic spring portion that applies an elastic biasing force to the branch switch when the engaging piece enters the engaging recess. Characteristic distribution board.   The engaging member has a shaft portion for pivotally supporting the mounting plate, and the elastic spring portion is formed of a spring body that gives the shaft portion an elastic biasing force toward the back side of the mounting plate. The distribution board according to claim 1, wherein   2. The distribution board according to claim 1, wherein the elastic spring portion includes a spring body provided at a portion of the engagement piece that contacts the engagement recess.

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