JP2007173174A - Wiring tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring tool capable of surely holding mounting state of a case main body and a lid body. <P>SOLUTION: Locking claw arranging parts 15, 25 are formed on shoulder parts 12, 24 of the case main body 10 and the lid body facing each other by perforating or notching the shoulder part. A holding frame 30 is formed by a trunk part 31 put on the shoulder part 24 of the lid body 10 and a locking claw 32 extending from the trunk part 31. The middle part of the locking claws 32 are arranged to the locking claw arranging parts 15, 25 formed on the case body 10 and the lid body 20, and the hook-shaped claw part formed on a tip part is bent at base part and locked to an end part of back face side of the case 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wiring device such as a switch or an outlet provided on a wall surface of a room, and more particularly to a wiring device having an improved assembly structure of a case body and a lid body constituting the device main body.

  Wiring devices such as switches and outlets have a device body composed of a box-shaped case body having one end face opened and a lid body assembled to the case body so as to close the open end face. Various parts for constituting a switch and an outlet such as a terminal, a contact, and a blade bracket are accommodated in the case body. The lid is assembled to one end opening of the case body, and is fixed to the case body by a metal holding frame.

  Patent Document 1 discloses an assembly structure of a body (case body) and a cover (lid body) having the following configuration, for example. That is, as shown in FIG. 1 of Patent Document 1, a shoulder (26) projects from the cover (20), and a locking projection (17) is formed on the body (10). The metal assembly frame (40) includes a locking piece (41) placed so as to straddle the pair of shoulder portions (26) of the cover (20), and both shoulder portions of the locking piece (41). (26) A connecting piece (43) whose base end is connected to a portion between the two pieces and a claw piece (42, 42) projecting laterally from both side edges of the distal end of the connecting piece (43) are continuously provided. It is formed integrally.

Then, the locking piece (41) of the assembly frame (40) is placed so as to straddle the pair of shoulder portions (26) of the cover (20), and the claw piece (42) is bent to the cover (20) side. The claw piece (42) engages with the recess (17a) provided in the engaging projection (17), and the body (10) and the cover (20) are coupled.
JP 2002-10436 A

  However, in the assembly structure of the body (case body) and the cover (lid body) having the above-described configuration, the claw piece (42) extends from the tip of the connecting piece (43), and this claw piece (42). Therefore, when an external force is applied to separate the body (case body) and the cover (lid body), stress concentrates on the nail piece (42), and the nail piece (42) It tries to restore the state before bending. As a result, the locked state by the claw piece (42) is released, and the body (10) and the cover (20) may be disassembled.

  This invention is made | formed in view of such a situation, and it aims at provision of the wiring apparatus which can hold | maintain the assembly | attachment state of a case body and a cover body reliably.

In order to achieve the above object, the present invention provides an instrument main body composed of a box-shaped case body whose one end face is open, and a lid body which is assembled to the case body so as to close the open end face. And a holding frame that holds the assembled state of the lid body,
A shoulder is formed on both sides of the case body, and a shoulder is formed on the both sides of the lid at a position facing the shoulder,
Further, each opposing shoulder portion of the case body and the lid body is formed with a locking claw arrangement portion by drilling or notching the shoulder portion,
The holding frame has a trunk portion that is placed on the shoulder portion of the lid, and a locking claw that extends from the trunk portion,
The locking claw is disposed in the locking claw disposition portion formed at the middle portion of the case body and the lid body, and the hook-shaped claw portion formed at the tip portion bends the root portion to fold the shoulder of the case body. It is the structure latched by the part back surface side edge.

In the wiring device having the above configuration, the lid body is assembled to the case body by the following procedure. That is, the lid is assembled to the case body in a state where the shoulder portions are aligned, and the assembled state is held by the holding frame. That is, the trunk portion of the holding frame is placed on the shoulder portion of the lid, and the middle portion of the locking claw is disposed on the locking claw placement portion. In this state, the locking claw is bent at the base. Thereby, the claw part formed in the front-end | tip part of a latching claw is latched by the back surface side edge of the shoulder part of a case body, and the assembly | attachment state of a case body and a cover body is hold | maintained.
Here, since the locking claw is bent at the base and the claw portion is locked to the locking claw arrangement portion of the case body, when an external force is applied to separate the case body and the lid body, The external force is received by the entire locking claw from the claw portion to the root, and as a result, the locked state can be firmly held.

The base portion of the locking claw is a support portion having a width that fits into the locking claw placement portion formed on the lid with almost no gap, and a folding portion that extends from the support portion and is narrower than the intermediate portion. It is preferable that a curved portion is included.
If comprised in this way, since a support part is fitted in the latching claw arrangement | positioning part of a cover body without rattling, it becomes possible to perform the bending operation of a bending part stably. Further, by making the bent portion narrower than the middle portion, the bent portion can be stably bent, and the locking claw can always hold the case body in a substantially constant form.

Moreover, the latching claw arrangement | positioning part is each formed in two places on the both sides | surfaces of a case body and a cover body,
The holding frame has two locking claws in which an intermediate portion is arranged at these two locking claw arrangement portions, and each of the two locking claws has a symmetrical hook-shaped claw portion. Is preferably formed.
By locking the case body symmetrically with the two locking claws, the assembled state of the case body and the lid can be held more firmly.

  As described above, according to the present invention, the locking claw is bent at the base and the claw portion is locked to the locking claw arrangement portion of the case body, so that the case body and the lid body are separated. When the external force to be applied acts, the external force is received by the whole of the locking claw from the claw portion to the root, and as a result, the locked state can be firmly held.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
1 to 5 are views showing a wiring device according to the first embodiment of the present invention, and FIG. 1 is a perspective view showing an overall configuration of the wiring device according to the first embodiment.
As shown in FIG. 1, the wiring device 1 of the present embodiment is configured to be fitted into a resin insulating frame 2 formed exclusively. The resin insulating frame 2 holds the wiring device 1 firmly and is attached to a wall surface or the like by screwing or the like. As such a structure of the resin insulating frame 2, for example, a wiring fixture mounting device disclosed in Japanese Patent Application Laid-Open No. 2002-44824 filed earlier by the present applicant can be applied.
Note that the wiring device 1 is generally formed with dimensions standardized by JIS standards, and in the present embodiment, details of a configuration example in which the present invention is applied to an outlet in which one plug insertion port is formed. Explained.

FIG. 2 is an exploded perspective view showing the configuration of the wiring device of the wiring device of the first embodiment, FIG. 3 is a development view showing the configuration of the wiring device, and FIG. ) Is a side sectional view, and (c) is a front view.
As shown in FIGS. 2 and 3, the wiring device 1 includes a substantially box-shaped case body 10 having an open front surface and a lid body 20 assembled to the case body 10 so as to close the opening end surface 11 of the case body 10. And a metal holding frame 30 that holds the assembled state of the case body 10 and the lid body 20. Here, the case body 10 and the lid body 20 are formed using a thermosetting synthetic resin excellent in durability.

  The case body 10 has shoulders 12 projecting from the left and right ends of the opening end surface 11. A pair of insertion holes 13 (locking claw placement portions) are formed in the shoulder portions 12 in the vertical direction.

  A pair of blade receiving members 14 are housed side by side in the case body 10. Although not specifically shown, the case body 10 is provided with a quick connection terminal that is electrically connected to the blade receiving member 14 at the inner bottom portion. The quick connection terminal is electrically connected to the internal blade receiving member 14 by simply inserting an external electric wire from an electric wire hole (not shown) drilled in the back surface of the case body 10, and the electric wire can be easily connected. It has a structure that cuts in so as not to pull out. As a structure of such a quick connection terminal, for example, a wiring device disclosed in Japanese Patent Application Laid-Open No. 2000-306616 filed earlier by the present applicant can be applied.

The upper surface of the lid 20 is a boss surface 21 into which a plug such as an electric appliance is inserted. The boss surface 21 is provided with a pair of plug blade holes 22 into which plug plug blades are inserted.
Further, similarly to the case body 10, shoulder portions 24 are respectively provided on both side surfaces of the lid body 20. The shoulder portion 24 is formed at a position just opposite to the shoulder portion 12 of the case body 10 in a state where the lid body 20 is assembled to the case body 10. The shoulder portion 24 of the lid 20 is provided with a notch groove 25 (locking claw arrangement portion). The notch groove 25 is formed at a position facing the insertion hole 13 of the case body 10 in a state where the case body 10 and the lid body 20 are combined. The insertion hole 13 and the cutout groove 25 penetrate from the front side (that is, the upper surface side) of the lid body 20 to the rear surface side (that is, the lower surface side) of the case body 10.

Two retaining claws 32 extend from the body 31 to the metal holding frame 30. Each locking claw 32 has a hook-shaped claw portion 32a formed symmetrically at the tip.
In the state in which the lid 20 is assembled to the opening end surface 11 of the case body 10, the metal holding frame 30 has an intermediate portion 32 b of the locking claw 32 as shown in FIG. The hook-shaped claw portion 32a formed at the tip end portion is inserted into the insertion hole 13 of the case body 10 from the notch groove 25, and is exposed on the back surface side of the insertion hole 13 of the case body 10. The body portion 31 is placed on the shoulder portion 24 of the lid body 20.

  Here, at the base portion of the locking claw 32, a support portion 32c having a width that fits in the notch groove 25 of the lid body 20 with almost no gap, and extending from the support portion 32c and narrower than the intermediate portion 32b. A formed bent portion 32d is formed.

Next, as shown in FIG.4 (b), by bending the bending part 32d of each latching claw 32, the claw part 32a is latched to the back side edge of the shoulder part 12 of the case body 10, The assembled state of the case body 10 and the lid body 20 is maintained.
As described above, the locking claw 32 is bent at the bent portion 32d at the base portion and the claw portion 32a is locked to the case body 10, so that the case body 10 and the lid body 20 are separated. When an external force to be applied acts, the locking claw 32 receives the entire force from the claw portion 32a to the root. Therefore, the locked state can be held firmly.

Further, the support portion 32 c formed at the base portion of the locking claw 32 is fitted into the cutout groove 25 of the lid body 10 without rattling. For this reason, it becomes possible to perform the bending operation of the bending part 32d stably. Further, by making the bent portion 32d narrower than the intermediate portion 32b, the bent portion 32d can be stably bent, and the locking claw 32 is always locked to the case body 10 in a substantially constant form. Can do.
Further, the two locking claws 32 lock the case body 10 symmetrically (see FIG. 4B). For this reason, the assembly | attachment state of the case body 10 and the cover body 20 can be hold | maintained still more firmly.

  A mounting claw 33 extends from the body portion 31 to the holding frame 30 in the outward direction. When the wiring device 1 is fitted into the resin insulating frame 2, the mounting claw 33 is locked to the mounting portion 2 a (see FIG. 1) of the resin insulating frame 2. As a result, the wiring device 1 is mounted on the resin insulating frame 2.

  Note that the wiring device 1 of the first embodiment is not limited to the above-described embodiment, and various application implementations and modifications can be made as necessary. Below, the modification of the wiring appliance of 1st Embodiment is illustrated.

FIG. 5 is a diagram illustrating a modification of the wiring device according to the first embodiment, where (a) is a front view of Modification 1, (b) is a front view of Modification 2, and (c) is a modification. 3 is a top view of FIG. 3, and FIG.
[Modification 1]
In the wiring device 1 shown in FIG. 5A, the shoulder portions 12 and 24 of the case body 10 and the lid body 20 are cut out at both side portions, and cutout grooves 15 and 26 (locking claw arrangement portions) are formed there. It is. In this case, the support groove 16 is formed in the middle portion of the shoulder 12 of the case body 10, and the support protrusion 34 that engages with the support groove 16 is extended from the body portion 31 of the holding frame 30. The support protrusion 34 is formed to have a width that fits into the support groove 16 with almost no gap, and the support protrusion 34 is fitted into the support groove 16 to suppress rattling of the holding frame 30. Then, the locking claw 32 is bent at the bent portion 32 d at the base portion, and the claw portion 32 a is locked to the shoulder portion 12 of the case body 10. Thereby, the assembly state of case body 10 and lid 20 can be held firmly.

[Modification 2]
The wiring device 1 shown in FIG. 5B has a shape in which the claw portion 32 a formed on the locking claw 32 of the holding frame 30 faces outward.

[Modification 3]
5 (c) and 5 (d), shoulder portions 12 and 24 are formed over the entire width on both side surfaces of the case body 10 and the lid body 20, and the notch grooves 17 and 27 (engagement) are formed on both end surfaces thereof. A pawl arrangement portion) is formed. The locking claws 32 of the holding frame 30 are formed to extend downward from both ends of the body portion 31.

[Second Embodiment]
6 to 9 are views showing a wiring device according to the second embodiment of the present invention.
As shown in FIG. 6, the wiring device 1 of the second embodiment has a pair of plug blade holes 22 at two spaced locations on the boss surface 21 formed on the lid body 20. The width of the lid 20 is longer than that of the first embodiment. In other words, the wiring device 1 has a width corresponding to three wiring devices shown in the first embodiment. The wiring apparatus according to the present embodiment is also mounted on the resin insulating frame 2 and installed on the wall surface of the room via the resin insulating frame 2.

  Also in the wiring device of this embodiment, parts such as the blade receiving member 14 are accommodated in the case body 10, and shoulder portions 12 are respectively provided on the left and right side surfaces of the case body. A pair of insertion holes 13 (locking claw placement portions) are formed in the shoulder portions 12 in the vertical direction.

  In addition, shoulder portions 24 are respectively provided on both side surfaces of the lid 20. The shoulder portion 24 is formed at a position just opposite to the shoulder portion 12 of the case body 10 in a state where the lid body 20 is assembled to the case body 10. An insertion hole 25 (locking claw placement portion) is formed in the shoulder portion 24 of the lid body 20. The insertion hole 25 is formed at a position facing the insertion hole 13 of the case body 10 in a state where the case body 10 and the lid body 20 are combined. The insertion hole 13 and the insertion hole 25 penetrate from the front side (that is, the upper surface side) of the lid body 20 to the rear surface side (that is, the lower surface side) of the case body 10.

As shown in FIG. 9 and the like, two locking claws 32 extend from the body portion 31 to the metal holding frame 30. Each locking claw 32 has a hook-shaped claw portion 32a formed symmetrically at the tip.
In the metal holding frame 30, the intermediate portion 32 b of the locking claw 32 is inserted from the insertion hole 25 of the lid body 20 into the insertion hole of the case body 10 in a state where the lid body 20 is assembled to the opening end surface 11 of the case body 10. 13 and the hook-shaped claw portion 32 a formed at the tip is exposed on the back side of the insertion hole 13 of the case body 10. The body portion 31 is placed on the shoulder portion 24 of the lid body 20.

  Here, a support portion 32c having a width that fits in the insertion hole 25 of the lid 20 with almost no gap at the base portion of the locking claw 32 and a width extending from the support portion 32c and narrower than the intermediate portion 32b. A formed bent portion 32d is formed.

Next, the bent portion 32 d of each locking claw 32 is bent, and the claw portion 32 a is locked to the edge on the back surface side of the shoulder portion 12 of the case body 10, whereby the case body 10 and the lid body 20 are assembled. The attached state is maintained.
As described above, the locking claw 32 is bent at the bent portion 32d at the base portion and the claw portion 32a is locked to the case body 10, so that the case body 10 and the lid body 20 are separated. When an external force to be applied acts, the locking claw 32 receives the entire force from the claw portion 32a to the root. Therefore, the locked state can be held firmly.

Further, the support portion 32 c formed at the base portion of the locking claw 32 is fitted into the insertion hole 25 of the lid body 10 without rattling. For this reason, it becomes possible to perform the bending operation of the bending part 32d stably. Further, by making the bent portion 32d narrower than the intermediate portion 32b, the bent portion 32d can be stably bent, and the locking claw 32 is always locked to the case body 10 in a substantially constant form. Can do.
Further, the two locking claws 32 lock the case body 10 symmetrically. For this reason, the assembly | attachment state of the case body 10 and the cover body 20 can be hold | maintained still more firmly.

  A mounting claw 33 extends from the body portion 31 to the holding frame 30 in the outward direction. When the wiring device 1 is fitted into the resin insulating frame 2, the mounting claw 33 is locked to the mounting portion 2 a (see FIG. 6) of the resin insulating frame 2. As a result, the wiring device 1 is mounted on the resin insulating frame 2.

  Note that the wiring device 1 of the second embodiment can be variously applied or modified as in the first embodiment.

[Third Embodiment]
10 to 12 are views showing a wiring device according to a third embodiment of the present invention.
As shown in FIGS. 10 and 11, the wiring device 1 of the third embodiment is made of metal on the outer periphery of the side surface of the case body 10 and the lid body 20 formed in the same shape as the second embodiment. The wall surface mounting frame 40 is attached. The wall surface mounting frame 40 is a component for installing the wiring device 1 directly on the indoor wall surface without being fitted into the resin insulating frame 2 or the like as described above.

  Similarly to the second embodiment, the wiring device 1 of the third embodiment also has a pair of plug blade holes 22 at two spaced locations on the boss surface 21 formed on the lid body 20, and thus the case body 10. And the width of the lid 20 is longer than that of the first embodiment (see FIG. 10). In other words, the wiring device 1 has a width corresponding to three wiring devices shown in the first embodiment.

  Also in the wiring device of the present embodiment, parts such as a blade receiving member are accommodated inside the case body 10, and shoulder portions 12 are respectively provided on the left and right side surfaces of the case body. A pair of insertion holes 13 (locking claw placement portions) are formed in the shoulder portions 12 in the vertical direction.

  In addition, shoulder portions 24 are respectively provided on both side surfaces of the lid 20. The shoulder portion 24 is formed at a position just opposite to the shoulder portion 12 of the case body 10 in a state where the lid body 20 is assembled to the case body 10. An insertion hole 25 (locking claw placement portion) is formed in the shoulder portion 24 of the lid body 20. The insertion hole 25 is formed at a position facing the insertion hole 13 of the case body 10 in a state where the case body 10 and the lid body 20 are combined. The insertion hole 13 and the insertion hole 25 penetrate from the front side (that is, the upper surface side) of the lid body 20 to the rear surface side (that is, the lower surface side) of the case body 10.

As shown in FIG. 12 and the like, two locking claws 42 extend from the frame body 41 a provided on both sides of the body portion 41 to the metal wall surface mounting frame 40. Each locking claw 42 has a hook-shaped claw portion 42a formed symmetrically at the tip.
In the metal wall mounting frame 40, the intermediate portion 42 b of the locking claw 42 is inserted from the insertion hole 25 of the lid body 20 into the case body 10 in a state where the lid body 20 is assembled to the opening end surface 11 of the case body 10. A hook-like claw portion 42 a inserted into the hole 13 and formed at the tip is exposed on the back side of the insertion hole 13 of the case body 10. The frame body 41 a of the body section 41 is placed on the shoulder section 24 of the lid body 20.

  Here, at the base portion of the locking claw 42, a support portion 42c having a width that fits in the insertion hole 25 of the lid 20 with almost no gap, and extending from the support portion 42c and narrower than the intermediate portion 42b. The formed bent part 42d is formed (see FIG. 12).

Next, the bent portion 42d of each locking claw 42 is bent, and the claw portion 42a is locked to the rear surface side edge of the shoulder portion 12 of the case body 10 so that the case body 10 and the lid body 20 are assembled. The attached state is maintained.
As described above, the locking claw 42 is bent at the bent portion 42d at the base portion and the claw portion 42a is locked to the case body 10, so that the case body 10 and the lid body 20 are separated. When an external force is applied, the locking claw 42 receives the external force as a whole from the claw portion 42a to the root. Therefore, the locked state can be held firmly.

Further, the support portion 42 c formed at the base portion of the locking claw 42 is fitted into the insertion hole 25 of the lid body 10 without rattling. For this reason, it becomes possible to perform the bending operation of the bending part 42d stably. Further, by making the bent portion 42d narrower than the intermediate portion 42b, the bent portion 42d can be stably bent, and the locking claw 42 is always locked to the case body 10 in a substantially constant form. Can do.
Further, the two locking claws 42 lock the case body 10 symmetrically. For this reason, the assembly | attachment state of the case body 10 and the cover body 20 can be hold | maintained still more firmly.

Note that the wiring device 1 of the third embodiment can be variously applied or modified as in the first embodiment.

It is a perspective view showing the whole wiring fixture composition concerning a 1st embodiment. It is a disassembled perspective view which shows the structure of the wiring device of 1st Embodiment. It is an expanded view which shows the structure of the wiring instrument of 1st Embodiment, (a) is a top view, (b) is side sectional drawing, (c) is a front view. It is a front view which shows the assembly | attachment structure of the wiring device of 1st Embodiment, (a) is a figure before bending a latching claw, (b) is a figure after folding a latching claw. It is a figure which shows the modification of the wiring appliance of 1st Embodiment, (a) is a front view of the modification 1, (b) is a front view of the modification 2, (c) is a top view of the modification 3, (D) is a side view of Modification 3. It is a perspective view which shows the whole structure of the wiring device which concerns on 2nd Embodiment. It is a disassembled perspective view which shows the whole structure of the wiring device of 2nd Embodiment. It is an expanded view which shows the structure of the wiring device of 2nd Embodiment, (a) is a top view, (b) is side sectional drawing, (c) is a front view. It is the figure which showed the metal holding frames of the wiring device of 2nd Embodiment, (a) is a top view, (b) is a side view. It is a perspective view which shows the whole structure of the wiring appliance which concerns on 3rd Embodiment. It is an expanded view which shows the whole structure of the wiring device of 3rd Embodiment, (a) is a top view, (b) is a side view. It is an expanded view of the wall surface mounting frame attached to the wiring device of 3rd Embodiment, (a) is a top view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Wiring instrument, 2: Resin insulation frame, 2a: Mounting part 10: Case body, 11: Open end surface, 12: Shoulder part, 13: Insertion hole (locking claw arrangement | positioning part), 14: Blade receiving member, 15 : Notch groove (locking claw arrangement part), 16: Support groove, 17: Notch groove (locking claw arrangement part)
20: Lid, 21: Boss surface, 22: Plug blade hole, 24: Shoulder part, 25: Notch groove or insertion hole (locking claw arrangement part), 26: Notch groove (locking claw arrangement part), 27: Notch groove (locking claw placement part)
30: Holding frame, 31: Body part, 32: Locking claw, 32a: Claw part, 32b: Intermediate part, 32c: Support part, 32d: Bending part, 33: Mounting claw, 34: Support protrusion 40: Wall mounting Frame, 41: body part, 41a: frame body, 42: locking claw, 32a: claw part, 32b: intermediate part, 32c: support part, 32d: bent part

Claims (3)

An instrument body composed of a box-shaped case body having an open end surface and a lid body assembled to the case body so as to close the opening end surface, and maintains the assembled state of the lid body to the case body A wiring device including a holding frame,
Forming shoulders on both side surfaces of the case body, and forming shoulder portions at positions facing the shoulder portions on both side surfaces of the lid body,
Further, each opposing shoulder portion of the case body and the lid body is formed with a locking claw arrangement portion by drilling or notching the shoulder portion,
The holding frame has a trunk portion placed on the shoulder portion of the lid body, and a locking claw extending from the trunk portion,
The locking claw has an intermediate portion disposed in a locking claw disposition portion formed in the case body and the lid body, and a hook-shaped claw portion formed in a distal end portion bends a root portion of the case. A wiring device characterized by being configured to be locked to an edge on the back side of the shoulder portion of the body. The base portion of the latching claw is formed with a support portion having a width that fits into the latching claw arrangement portion formed on the lid body with almost no gap, and is narrower than the intermediate portion extending from the support portion. The wiring device according to claim 1, wherein the wiring device includes a bent portion. The locking claw arrangement portions are formed at two locations on both side surfaces of the case body and the lid body,
In the holding frame, two locking claws having an intermediate portion arranged between the two locking claw arrangement portions extend, and the two locking claws are symmetrically formed with the hook-shaped claws. The wiring apparatus according to claim 1, wherein a portion is formed.

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