JP5156050B2 - Cap array - Google Patents

Description

The present invention relates to cap-poor lay used in the electrical device.

  2. Description of the Related Art Conventionally, a distribution board including a main breaker and a plurality of branch breakers connected to the main breaker has been used for power distribution in a house or the like. Each branch breaker has a load terminal portion for load connection. The distribution board supplies power from an AC power source to the load circuit connected to the load terminal portion of each branch breaker via the main breaker and the branch breaker.

  Generally, the number of branch breakers housed in the distribution board is determined according to the number of load circuits. However, in preparation for future load circuit expansion, the number of branch breakers is larger than the number of actual load circuits. It may be stored in. In this case, some branch breakers are not used until the load circuit is expanded, and the load circuit is not connected, so that the load terminal portion remains unused for a long time. Further, even when all branch breakers are used, the load terminal is not used because the load circuit is not connected when the distribution board is installed.

  By the way, in the branch breaker in a distribution board, the terminal part (for example, quick-connection terminal) of the structure where an electric wire insertion hole opens in a part of a body, and is electrically connected with the electric wire inserted in the electric wire insertion hole. It may be used for a load terminal portion (see, for example, Patent Document 1).

JP 2004-88899 A (paragraph 0022)

  However, in a branch breaker, if a terminal part having a structure in which an electric wire is inserted from an electric wire insertion hole is used as a load terminal part, dust is applied from the electric wire insertion hole to the terminal part when the load terminal part is not used as described above. There is a possibility of entering. The same problem is not limited to the branch breaker, and may occur if there is a terminal portion that is not used in all electrical devices having a terminal portion (for example, a quick connection terminal) having a structure in which an electric wire is inserted from an electric wire insertion hole.

The present invention was made in view of the above circumstances, and aims to provide a prevention can Ruki Yappuarei that dust from entering the terminal portion by covering the electric wire insertion hole of the terminal part which is not used To do.

Cap array of the present invention, have a terminal portion of the structure connected plurality of pair electric wire insertion hole is in electrical wires inserted into the wire insertion hole has an opening with a device body which It is used in an electric device composed of a breaker device arranged in a row at a predetermined pitch in one panel, and is formed to have a size straddling the one set of the electric wire insertion holes. An exposed portion for covering, and an insertion portion that protrudes from the exposed portion by the same number as the set of wire insertion holes and is inserted into each of the set of wire insertion holes to hold the exposed portion in the body And at least one of the exposed portion and the insertion portion is made of a flexible material, and at least two insertion portions of the plurality of insertion portions are spaced from each other. Is different between the tip and the base The tip portion is pressed against the inner peripheral surface of the wire insertion hole in a state of being inserted into the wire insertion hole to prevent the wire insertion hole from coming off, and the plurality of caps have the same pitch as the electric device. The exposed portions are connected by connecting pieces so as to be aligned in a row, and the connecting pieces are formed thinner than the exposed portions, so that adjacent caps can be separated from each other. To do.

In this cap array , it is more desirable that at least the insertion portion of the cap is made of an insulating material.

In this cap array , the exposed portion includes a knob portion having a predetermined length in a direction in which the insertion portion protrudes, and the knob portion becomes thicker as the distance from the insertion portion increases in the direction in which the insertion portion protrudes. It is more desirable that it is formed.

In this cap array , the exposed portion has a through-hole penetrating in a direction intersecting the protruding direction of the insertion portion, and the through-hole is formed in a predetermined size so that a finger of a hand can be caught. It is more desirable.

  The present invention has an advantage that dust can be prevented from entering the terminal portion by covering the wire insertion hole of the terminal portion that is not used.

It is a schematic sectional drawing which shows the usage example of the cap of Embodiment 1. The distribution board where a cap same as the above is used is shown, (a) is a plan view, and (b) is a sectional view taken along the line AA of (a). The branch breaker in which a cap same as the above is used is shown, (a) is a front view, (b) is a plan view, and (c) is a side view. The structure of a cap same as the above is shown, (a) is a plan view, (b) is a front view, and (c) is a side view. The other structure of a cap same as the above is shown, (a) is a top view, (b) is a front view, (c) is a side view. 6 is a plan view showing a configuration of a cap array according to Embodiment 2. FIG.

  In the following embodiments, a branch breaker (breaker device) housed in a distribution board is illustrated as an electric device in which a cap is used. Here, the distribution board will be briefly described first.

  As shown in FIG. 2, the distribution board 10 includes a main breaker 20 and a plurality of branch breakers 40 connected to the main breaker 20 through a plurality of conductive bars 30 in a housing 50. .

  Here, the power distribution system will be described on the assumption that the single-phase AC power supply is a single-phase three-wire system that supplies a neutral pole N circuit using two electric circuits of the voltage poles L1 and L2. That is, the conductive bar 30 is composed of the neutral electrode N and the voltage electrodes L1 and L2. In addition, below, the distribution board 10 attached to the wall of a building is illustrated, and the upper and lower sides and right and left of FIG.

  The housing 50 includes a box body 51 having a front opening and a lid (not shown) coupled to the front side of the box body 51.

  The main breaker 20 includes a primary side terminal 21 to which a lead-in wire of an AC power source (commercial power source) is connected, a secondary side terminal 22 to which a conductive bar 30 is connected, and a primary side terminal 21 to a secondary side terminal 22. And a contact (not shown) inserted into the conductive bar 30 to turn on / off the power supply to the conductive bar 30.

  Each conductive bar 30 is made of a metal plate extending in the left-right direction, and is connected to the secondary side terminal 21 of the main breaker 20 via a connecting bar 31. Here, the conductive bars 30 of each polarity are arranged at equal intervals in the front-rear direction (depth direction).

  The branch breaker 40 includes a container body 41 formed in a rectangular parallelepiped shape. A plurality of branch breakers 40 are provided in the longitudinal direction of the conductive bar 30 on both sides in the width direction (vertical direction) of the conductive bar 30 (eight in the example of FIG. 2). One by one). Here, a plurality of branch breakers 40 are arranged at a predetermined pitch P <b> 1 in the width direction (left-right direction) of the container body 41 on both sides in the width direction of the conductive bar 30. The outer dimensions of each branch breaker 40 are set to so-called distribution board agreement dimensions (dimensions defined in the JIS standard as the standard of the internal device of the distribution board 10).

  The branch breaker 40 is a so-called plug-in type, and has a recessed groove-shaped power terminal portion 42 formed at a portion facing the conductive bar 30, and the conductive bar 30 is inserted into the power terminal portion 42 when mounted. This completes the electrical connection with the conductive bar 30. Therefore, in a state where the branch breakers 40 are mounted on both sides of the conductive bar 30 in the width direction, each conductive bar 30 is sandwiched between the pair of branch breakers 40.

  Further, as shown in FIG. 3, a load terminal 43 for connecting a load circuit is formed at the end of the branch breaker 40 opposite to the power supply terminal 42 in the longitudinal direction (vertical direction) of the container body 41. Has been.

  An electric wire insertion hole 44 is opened in a part of the container body 41, and the load terminal portion 43 is electrically connected to an electric wire (not shown) inserted into the container body 41 through the electric wire insertion hole 44. It consists of the terminal part of the structure. Here, the load terminal portion 43 has a terminal plate (not shown) and a locking spring (not shown) in the back of the wire insertion hole 44, and the tip of the wire is inserted from the wire insertion hole 44. It is a so-called quick-connect terminal that performs electrical connection with the electric wire and mechanical holding (preventing disconnection) of the electric wire.

  The wire insertion hole 44 is opened on an inclined surface in which a part of the end surface opposite to the power supply terminal portion 42 in the longitudinal direction of the container body 41 is inclined so that the dimension in the longitudinal direction of the container body 41 becomes smaller toward the front side. To do. A release button 45 for releasing the mechanical holding of the electric wire is provided in the vicinity of the electric wire insertion hole 44 in the container body 41.

  The wire insertion holes 44 are formed as a set of two that are arranged in the width direction (left-right direction) of the container body 41. A partition wall 46 that partitions between the load terminal portions 43 is formed between the pair of wire insertion holes 44.

  The branch breaker 40 includes a contact (not shown) interposed between the power supply terminal portion 42 and the load terminal portion 43 in the container body 41 to turn on / off the power supply to the load circuit. A handle 47 for operating the contacts is provided on the front surface of the container body 41.

(Embodiment 1)
The cap according to the present embodiment is used by being attached to a load terminal portion 43 that is not used in the branch breaker 40 described above.

  As shown in FIG. 4, the cap 1 has an exposed portion 11 that covers the wire insertion hole 44 and an insertion portion 12 that protrudes from the exposed portion 11.

  The exposed portion 11 has a first surface 13 that is set larger than the opening surface of the wire insertion hole 44, and this first surface 13 is applied to the periphery of the wire insertion hole 44 in the body 41 of the branch breaker 40. The electric wire insertion hole 44 is closed so as to make contact.

  The insertion portion 12 protrudes from a portion corresponding to the wire insertion hole 44 in the first surface 13 and is formed in a substantially cylindrical shape whose outer diameter decreases toward the distal end side. The outer diameter (maximum outer diameter) of the insertion portion 12 is set to be equal to or smaller than the inner diameter of the electric wire insertion hole 44, and the insertion portion 12 is inserted into the electric wire insertion hole 44 when the cap 1 is attached, thereby exposing the exposed portion 11 to the body. 41.

  Moreover, in this embodiment, the cap 1 is entirely formed of a synthetic resin material having insulating properties. However, the cap 1 only needs to have at least the insertion portion 12 formed of an insulating material. For example, a conductive material may be used for a part of the exposed portion 11.

  By the way, in this embodiment, one set of two electric wire insertion holes 44 is formed in the vessel body 41 of the branch breaker 40 as described above, and the exposed portion 11 has one set of the first surface 13 (two sets). ) Of the wire insertion hole 44. Furthermore, the insertion part 12 is provided in each site | part corresponding to each electric wire insertion hole 44 in the 1st surface 13 so that it may become the same number as one set (two pieces) of electric wire insertion holes 44. It is inserted into each of the set of electric wire insertion holes 44. Thus, the two wire insertion holes 44 formed in the container body 31 are collectively covered with the single cap 1.

  Here, a partition wall 46 is formed between the pair of electric wire insertion holes 44. In view of this, the exposed portion 11 has a notch 14 formed in a portion of the first surface 13 corresponding to the partition wall 46, and avoids interference with the partition wall 46 at the notch 14. Further, the cap 1 has an advantage that the creepage distance between the pair of insertion portions 12 can be increased as compared with the case where the notch portion 14 is not provided because the notch portion 14 is formed between the both insertion portions 12.

  Furthermore, the exposed part 11 has a knob part 15 having a predetermined length along the direction in which the insertion part 12 protrudes. The knob portion 15 is formed so as to be thicker away from the insertion portion 12 in the protruding direction of the insertion portion 12. Specifically, the size of the knob portion 15 in the thickness direction (vertical direction in FIG. 4B) perpendicular to the plane including the central axis of the two insertion portions 12 increases as the distance from the insertion portion 12 increases. Thus, both surfaces in the thickness direction are tapered surfaces 16 with an inclination. In addition, the edge part on the opposite side to the insertion part 12 in the protrusion direction of the insertion part 12 among the knob parts 15 forms the press part which the flange 17 protruded on both sides of the thickness direction.

  Thus, when the exposed portion 11 has the knob portion 15, when the user attaches the cap 1 to the load terminal portion 43, the user can easily cap the cap 1 by pressing the wide pressing portion with a finger. 1 can be mounted. Further, when the user removes the cap 1 from the load terminal portion 43, the user can easily remove the cap 1 by picking up the knob portion 15 from both sides in the thickness direction with his / her fingers.

  Furthermore, a plurality of ribs 18 are formed on each surface (tapered surface 16) in the thickness direction of the knob portion 15 along the direction in which the two insertion portions 12 are arranged. Therefore, when the user pulls out the cap 1 by pinching the knob portion 15, the rib 18 functions as a non-slip, and the removal of the cap 1 is further simplified as compared with the case without the rib 18.

  Next, the form at the time of use of the cap 1 of this embodiment is demonstrated with reference to FIG.

  The cap 1 is used in a state in which the pair of insertion portions 12 are inserted into a pair of corresponding wire insertion holes 44. In this state, the exposed portion 11 covers the opening of the pair of wire insertion holes 44 by bringing the first surface 13 into contact with the periphery of each wire insertion hole 44.

  In the present embodiment, the insertion portion 12 has a length dimension (from the first surface 13 so as not to contact a terminal plate or a lock spring in the back of the wire insertion hole 44 in a state of being inserted into the wire insertion hole 44. Projecting dimensions). For this reason, the cap 1 is not prevented from coming out of the wire insertion hole 44 by the quick-connection terminal retaining mechanism (terminal plate and locking spring).

  Therefore, the cap 1 of the present embodiment is prevented from coming off from the wire insertion hole 44 by the configuration described below.

  That is, the central axis of each insertion portion 12 is inclined with respect to the first surface 13 so that the distance between the pair of insertion portions 12 is narrower toward the distal end side. Here, the distance between the tip portions of both insertion portions 12 is set to be shorter than the distance between the pair of wire insertion holes 44. Therefore, the cap 1 is attached to the load terminal portion 43 while bending both the insertion portions 12 so as to increase the distance between the distal ends of the both insertion portions 12.

  As a result, in a state where the cap 1 is mounted on the load terminal portion 43, as shown in FIG. 1, both the insertion portions 12 press the tip portion against the inner peripheral surface of the wire insertion hole 44, so Acts as a stop. In other words, the both insertion portions 12 prevent the wires 41 from coming out of the wire insertion holes 44 by sandwiching the portion between the two wire insertion holes 44 in the container body 41 between the tip portions.

  The cap 1 attached to the load terminal portion 43 is removed from the load terminal portion 43 by being pulled out from the electric wire insertion hole 44 with a force larger than the force of retaining by the insertion portion 12.

  According to the configuration in which the insertion portion 12 is pressed against the inner peripheral surface of the electric wire insertion hole 44 in this way, the cap 1 can be removed from the electric wire insertion hole 44 without using the quick connection terminal retaining mechanism. It is prevented from coming off. Therefore, even if the cap 1 attached to the load terminal portion 43 is subjected to vibration or the like when the branch breaker 40 is transported or attached, the possibility of falling off from the wire insertion hole 44 is reduced. In addition, since the fast connection terminal retaining mechanism is not used to prevent the cap 1 from being detached, it is avoided that the fast coupling terminal retaining mechanism is used before the load terminal portion 43 is used and a load is applied to the retaining mechanism. There is an advantage that the cap 1 can be easily removed.

  Further, for example, even when the distance between the pair of insertion portions 12 is increased toward the distal end side, both insertion portions 12 can function as a retaining member by pressing the distal end portions against the inner peripheral surface of the wire insertion hole 44. Furthermore, as described above, in order for the both insertion portions 12 to function as a retainer, the entire cap 1 does not have to be flexible, and the exposed portion 11 and the insertion portion 12 that connect the both insertion portions 12 are not necessary. It is sufficient that at least one of them has flexibility.

  In addition, the structure for preventing the cap 1 from being removed is not limited to the above-described configuration, and the insertion portion 12 functions as a retainer even in a configuration in which, for example, a slit is formed at the distal end portion of at least one insertion portion 12 to form a fork. can do. In other words, the insertion portion 12 is inserted into the wire insertion hole 44 with the distal end closed, and the distal end is pressed into the inner peripheral surface of the wire insertion hole 44 by opening in the wire insertion hole 44 and functions as a retainer. To do.

  In addition, the cap 1 has a structure in which the insertion portion 12 is formed of an elastic material such as a rubber material and the outer diameter (maximum outer diameter) of the insertion portion 12 is set larger than the inner diameter of the wire insertion hole 44. By pushing into the electric wire insertion hole 44, it can function as a retainer.

  By using the cap 1 having the configuration described above, the wire insertion hole 44 of the load terminal portion 43 can be covered with the cap 1 if the load terminal portion 43 of the branch breaker 40 is not used. Therefore, when the cap 1 is used, there is an advantage that dust can be prevented from entering the container body 41 from the wire insertion hole 44 by opening the wire insertion hole 44 of the load terminal portion 43 that is not used. is there. Therefore, when the branch breaker 40 is accommodated more than the actual number of load circuits in preparation for future expansion of the load circuit, or when the distribution board 10 is installed, unused load terminal portions are used. It is possible to prevent dust from entering 43.

  Moreover, since one cap 1 collectively covers the two wire insertion holes 44, the cap 1 can be attached to and detached from a plurality of (two) load terminal portions 43 at a time, and a plurality of load terminal portions can be attached. The workability is improved as compared with the case where the cap 1 is individually attached to and detached from 43.

  Further, since the outer diameter of the insertion portion 12 is made smaller toward the distal end side, the cap 1 has a slight deviation between the center of the insertion portion 12 and the center of the wire insertion hole 44 when attached. In addition, the insertion portion 12 can be inserted to the position until the first surface 13 contacts the container body 41.

  In addition, since at least the insertion portion 12 is made of an insulating material, the cap 1 has an advantage that even if the insertion portion 12 comes into contact with the charging portion of the load terminal portion 43, a problem such as a short circuit does not occur.

  By the way, in this embodiment, as the structure for facilitating the removal of the cap 1, the exposed portion 11 has exemplified the structure having the knob portion 15 in which the rib 18 for slip prevention is formed on the tapered surface 16. It is not limited to the structure. That is, the exposed portion 11 may have a structure in which a through-hole 19 having a size that allows a finger of a human hand to enter, for example, as shown in FIG. The through hole 19 penetrates the exposed portion 11 in a direction (vertical direction in FIG. 5B) perpendicular to the plane including the central axis of the two insertion portions 12. Thus, the exposed portion 11 is formed in a frame shape surrounding the through hole 19, and the user can easily pull out the cap 1 by hooking a finger of the hand into the through hole 19.

  In the example of FIG. 5, the exposed portion 11 has a thickness direction so that the dimension in the thickness direction (vertical direction in FIG. 5B) increases as the distance from the insertion portion 12 is the same as the knob portion 15 described above. Both sides are tapered surfaces with an inclination. Therefore, when the user attaches the cap 1 to the load terminal portion 43, the user can easily attach the cap 1 by pressing the wide portion of the exposed portion 11 with a finger.

  In the said embodiment, although the branch breaker 40 was illustrated as an electric apparatus with which the cap 1 is used, it is not restricted to this example, The electric wire inserted in the electric wire insertion hole which has the container body which the electric wire insertion hole opened in part, and What is necessary is just an electric apparatus which has a terminal part (rapid connection terminal) of the structure connected electrically. That is, the cap 1 having the above-described configuration can be used not only for the branch breaker 40 but also for various electric devices such as a terminal block housed in the distribution board 10 and other electric devices.

  Moreover, in the said embodiment, according to the electric apparatus (branch breaker 40) in which the one set of two electric wire insertion holes 44 are formed in the container body 41, the cap 1 puts together the two electric wire insertion holes 44 together. Although it was comprised so that it might cover, the structure which covers three or more electric wire insertion holes 44 collectively may be sufficient. In other words, depending on the electric device, for example, three or more wire insertion holes may be formed in the container to support the single-phase three-wire system, and this type of electric device includes three or more electric wires. A cap 1 configured to cover the insertion holes together may be used.

(Embodiment 2)
The cap array 100 of the present embodiment includes a plurality of caps 1 having the configuration described in the first embodiment as shown in FIG. 6, and is configured by connecting and integrating these caps 1 with connecting pieces 101. Has been. In this embodiment, the cap array 100 formed by integrating four caps 1 is illustrated as an example, but the number of caps 1 constituting the cap array 100 is not limited to four.

  The connecting piece 101 connects the exposed portions 11 of adjacent caps 1 so that the plurality of caps 1 are arranged in a line at the same pitch P1 as that of the branch breaker 40 (see FIG. 2A). The plurality of caps 1 constituting the cap array 100 are arranged along the direction in which each pair of insertion portions 12 is arranged. Here, the connection piece 101 has connected the edge part (pressing part) on the opposite side to the insertion part 12 in the protrusion direction of the insertion part 12 among the exposed parts 11. FIG.

  According to the cap array 100 having the above-described configuration, when the cap 1 is a molded product of synthetic resin, a plurality of caps 1 can be formed with one mold, and thus the caps 1 are individually formed one by one. Compared to the case, the manufacturing cost can be kept low. Moreover, since the plurality of caps 1 are arranged at the same pitch P1 as the branch breaker 40, a plurality of caps 1 arranged in the panel as shown in FIG. The branch breaker 40 can be mounted.

  Further, the connecting piece 101 is formed thinner than the exposed portion 11 of each cap 1. Therefore, the cap array 100 can easily separate the caps 1 at the connecting piece 101 according to the required number. That is, in the case of the cap array 100 in which the four caps 1 are integrated as shown in FIG. 6, the number of caps 1 arbitrarily selected between 1 to 4 can be separated.

  In addition, since the structure and function of the cap 1 which comprises the cap array 100 of this embodiment are the same as that of Embodiment 1, detailed description is abbreviate | omitted.

DESCRIPTION OF SYMBOLS 1 Cap 11 Exposed part 12 Insertion part 13 1st surface 15 Knob part 19 Through-hole 40 Branch breaker (electrical device)
41 Container 43 Load terminal part (terminal part)
44 Wire insertion hole 100 Cap array 101 Connecting piece

Claims (4)

Wire insertion hole for the plurality with one set have a terminal portion of the opened device body said are electrical wire insertion hole in the inserted wires electrically connected has structure, default in one of the board Used in an electrical device consisting of a breaker device arranged in a row at a pitch of
An exposed portion that is formed to extend over the one set of the wire insertion holes and covers the wire insertion hole, and protrudes from the exposed portion by the same number as the one set of the wire insertion holes, and the one set of the wires. A plurality of caps having an insertion part that holds the exposed part in the container body by being inserted into each of the insertion holes ;
At least one of the exposed portion and the insertion portion is made of a flexible material, and at least two of the plurality of insertion portions are spaced from each other at a distal end portion and a proximal end portion. The tip is pressed against the inner peripheral surface of the wire insertion hole in a state of being inserted into the wire insertion hole, and the wire insertion hole is prevented from coming off.
The plurality of caps are connected to each other by connecting pieces so that the caps are arranged in a line at the same pitch as the electric device, and the connecting pieces are formed thinner than the exposed parts. A cap array characterized in that adjacent caps can be separated from each other . The cap array according to claim 1 , wherein at least the insertion portion is made of an insulating material . The exposed portion has a knob portion having a predetermined length in a direction in which the insertion portion protrudes, and the knob portion is formed to be thicker away from the insertion portion in the direction in which the insertion portion protrudes. cap array according to claim 1 or claim 2, characterized in. The exposed portion has a through-hole penetrating in a direction intersecting the protruding direction of the insertion portion, and the through-hole is formed to have a predetermined size so that a finger of a hand can be caught. The cap array according to any one of claims 1 to 3, wherein the cap array is characterized.

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