JP4473167B2 - Wiring box - Google Patents

Description

  The present invention relates to a wiring box in which a plurality of conduits are connected to a wall portion.

  Conventionally, a conduit tube is connected to the wall portion of the wiring box having an elongated rectangular box shape, and the cable drawn into the wiring box is protected by the conduit tube. An adapter is used as a method of connecting a conduit to the wall of the wiring box (see, for example, Patent Document 1). A box mounting hub (hereinafter simply referred to as a mounting hub) as the adapter described in Patent Document 1 has a cylindrical shape, and is inserted into a knockout bored in a short wall of a wiring box at one end. And a conduit insertion port that allows the conduit to be inserted at the other end. Furthermore, a locking claw for locking to the outer surface of the conduit inserted into the conduit insertion port is formed on the peripheral wall forming the conduit insertion port. Then, when the insertion port is inserted into the knockout, the conduit is inserted into the conduit insertion port and the locking claw is locked to the conduit, the conduit is connected to the wall portion of the wiring box using the mounting hub. be able to.

Another method for connecting a conduit to a wall portion of a wiring box is to provide a set portion on the wall portion (see, for example, Patent Document 2). A set portion having a substantially cylindrical shape protrudes from the wall portion of the wiring box. Inside the set portion, a pair of holes into which end portions of a wire protection tube as a conduit tube can be inserted, and these A communication portion that allows the holes to communicate with each other is formed. In addition, the duplex electric wire protection tube connected to a set part is a thing with which two electric wire protection tubes were connected via the connection part over those whole length directions. Then, with the end of the conduit tube inserted into each hole and the connecting portion inserted into the communicating portion, the set portion is tightened with a screw, so that the duplex wire protection tube is prevented from coming off on the wall portion via the set portion. Connected to the state.
Japanese Utility Model Publication No. 4-48091 JP 2002-165329 A

  By the way, in order to connect two conduits to the short wall of the wiring box using the mounting hub described in Patent Document 1, the two mounting hubs must be connected to the short wall. However, when two mounting hubs are connected to a short wall, adjacent peripheral walls of both mounting hubs interfere with each other, making it very difficult to connect the mounting hub to the wall. It is very difficult to connect the pipe to the wiring box.

  Moreover, in the technique described in Patent Document 2, a communication portion is formed between the holes. For this reason, in a state where the duplex electric wire protection tube is connected to the wall portion using the set portion, the communication portion is interposed between the electric wire protection tubes. As a result, in the wiring box, the set part, which is the connection part of the wire protection tube, is increased in size by the provision of the communication part. This enlargement of the set part increases the size of the short wall in which the set part is provided, and thus the wiring. This will increase the size of the box.

  The present invention has been made paying attention to the problems existing in the above-described conventional technology. An object of the present invention is to provide a wiring box that can reduce the size of the body by connecting the connecting portions of the conduits and can easily connect a plurality of conduits.

In order to solve the above problems, the invention described in claim 1 is a wiring box which is formed in a box shape and has a plurality of conduits connected to a wall, and the conduit is connected to the wall. The connecting part is integrally formed, and the conduit connecting part is formed by juxtaposing an insertion part with an insertion port that allows the end of each conduit tube to be inserted individually one by one in the axial direction, A series of insertions that allow insertion of a plurality of conduits in contact with each other inside the conduit connecting portion through communication portions formed between adjacent insertion ports. The gist is to provide a space, and connect the plurality of conduits to the wall portion by inserting the plurality of conduits into the insertion space.

According to a second aspect of the present invention, in the wiring box according to the first aspect of the present invention, the conduit is formed in a concavo-convex shape by repeatedly forming a convex portion and a concave portion in the axial direction. The gist is that the portion is formed with a locking claw for locking to the concave portion.

According to a third aspect of the present invention, in the wiring box according to the first or second aspect , the wall portion has a through hole communicating with each insertion port, and The gist is that the diameter is larger than the diameter of the through-hole, and a contact portion is provided on the outer peripheral side of the through-hole to contact the axial end of the conduit tube inserted into each insertion port.

  ADVANTAGE OF THE INVENTION According to this invention, the site | part for a connection of a conduit tube can be made compact, the size reduction can be achieved, and the connection of a some conduit tube can be performed easily.

  Hereinafter, an embodiment of a wiring box embodying the present invention will be described with reference to FIGS. In the following description, “up”, “down”, “front”, “rear”, “left”, and “right” of the wiring box have the direction of the arrow Y1 shown in FIG. 1 as the vertical direction and the direction of the arrow Y2 as the front-back direction. The direction of arrow Y3 is the left-right direction.

  First, a conduit connected to a synthetic resin wiring box will be described. As shown in FIG. 1, the conduit 10 is formed in the shape of a flexible pipe from a synthetic resin material. Then, the conduit 10 has a ridge portion 10a having a ring shape with the same diameter protruding in the circumferential direction and a recess portion 10b having a ring shape with the same diameter repeatedly formed along the axial direction of the conduit tube 10. Has been uneven.

  Next, the wiring box 11 will be described. As shown in FIG. 1, the wiring box 11 has a vertically long rectangular box shape having an opening on one surface (front surface), and a plurality of (four in total, four in this embodiment) conduits 10 are formed on the wall portion H. A conduit connection part 30 to be connected is provided. In the present embodiment, it is assumed that two conduits 10 are connected to the wiring box 11.

  As shown in FIGS. 1 and 2, the wiring box 11 is formed in a vertically long rectangular box shape from a bottom wall 12 having a vertically long rectangular shape and four side walls standing from the periphery of the bottom wall 12. The wiring box 11 is used such that the short side walls facing each other are arranged up and down, and the long side walls facing each other are arranged on the left and right.

  In a state where the opening of the wiring box 11 is the front surface, the upper side wall of the pair of short side walls facing each other in the vertical direction is the upper side wall 12a and the lower side wall is the lower side wall 12b. Further, in the state where the opening of the wiring box 11 is set to the front, the left side wall of the pair of long side walls facing left and right is the left side wall 12c and the right side wall is the right side wall 12d. The bottom wall 12, the upper side wall 12 a, the lower side wall 12 b, the left side wall 12 c, and the right side wall 12 d constitute a wall portion H of the wiring box 11. On the outer surface of the left side wall 12c, there is formed a contact seat 14 that has a certain thickness and abuts against the pillar 16 when the wiring box 11 is fixed to the pillar 16. Further, a pair of through holes 18 are formed in the upper side wall 12a and the lower side wall 12b so as to penetrate the upper side wall 12a and the lower side wall 12b, respectively (only the through hole 18 in the lower side wall 12b is shown in FIG. 1). . A small diameter conduit (not shown) having an outer diameter corresponding to the length along the short side direction of the through hole 18 and having a smaller diameter than the above-described conduit 10 is connected to the through hole 18. It is possible.

  Next, the conduit connection part 30 will be described. The conduit connection portion 30 is formed in a cylindrical shape, and is integrally formed on each of the side walls 12a and 12b so as to surround each through hole 18 with the upper side wall 12a and the lower side wall 12b. The conduit connection portion 30 has two cylindrical insertion portions 31 arranged in parallel to form an outer shell, and each insertion portion 31 protrudes outward from the edge portions of the upper side wall 12a and the lower side wall 12b. Without being formed inside the upper side wall 12a.

  As shown in FIG. 3, each of the insertion portions 31 is provided with an insertion port 31 a having a circular hole shape through which one conduit 10 can be inserted. The inner diameter of each insertion port 31a is formed to be slightly smaller than the outer diameter of the conduit 10 (the outer diameter of the ridge portion 10a). For this reason, in the state in which the conduit 10 was inserted in the insertion port 31a, it is supposed that the conduit 10 is hold | maintained from the outer peripheral side by the insertion port 31a. When one conduit tube 10 is inserted into one insertion port 31 a, one conduit tube 10 can be connected to the wiring box 11 by one insertion portion 31 alone.

  Each insertion part 31 is erected from the outer peripheral side with respect to each through-hole 18 on the upper side wall 12a and the lower side wall 12b, and the inner diameter of each insertion part 31 (the diameter of the insertion port 31a) is the above-described through-hole. It is formed larger than the aperture of 18. For this reason, the outer peripheral side of each through-hole 18 is located inside each insertion part 31 in the upper side wall 12a and the lower side wall 12b. And the axial direction edge part of the conduit 10 inserted in each insertion port 31a in the site | part which is the outer peripheral side of the through-hole 18 in the upper wall 12a and the lower wall 12b, and becomes the inner side of each insertion part 31. An abutting portion 34 that abuts is configured.

  A communicating portion 33 is formed between the insertion portions 31 in the conduit connection portion 30. Here, an imaginary circle formed along the outer peripheral surface of one insertion portion 31 is referred to as C1, and an imaginary circle formed along the outer peripheral surface of the other insertion portion 31 is referred to as C2. In this case, in the conduit connection part 30, a part corresponding to an area where the virtual circle C <b> 1 and the area inside the virtual circle C <b> 2 overlap is excised, and a communication part 33 is formed in the excised part. The communication portion 33 allows the insertion ports 31 a in both the insertion portions 31 to communicate with each other. In the conduit connection portion 30, the pair of insertion ports 31 a communicate with each other through the communication portion 33 to form a series of insertion spaces S.

  This insertion space S allows two conduits 10 to be inserted, but by inserting the conduit 10 into each insertion port 31a, the two conduits 10 are made independent by the respective insertion portions 31. Can be connected to the wiring box 11. As shown in FIG. 4, in a state where the conduit 10 is inserted into each insertion port 31 a and the two conduits 10 are connected to the wiring box 11, the communication portion 33 opposes the two conduits 10. The outer surfaces to be in contact with each other at the communication portion 33. In addition, contacting the outer surfaces of the conduit 10 means that the outer surfaces of the conduit 10 contact in the state where the two conduits 10 were inserted in each insertion port 31a. In addition, although the conduit 10 is inserted into the insertion portion 31 in a slightly separated state, the outer surfaces of the conduit 10 are also brought into contact with each other within the communication portion 33 when the conduits 10 are brought close to each other. Means contact.

  As shown in FIGS. 1 to 3, in the conduit connection part 30, locking claws 35 are formed at positions where the respective insertion parts 31 face each other. Each locking claw 35 is formed so as to be elastically deformable, and the tip part is formed so as to protrude inside the insertion part 31 (inside the insertion port 31a). The conduit connecting part 30 having the above-described configuration is a connection part for connecting the plurality of conduits 10 to the wall part H in the wiring box 11.

  Now, in order to connect the two conduits 10 to the upper side wall 12a which is the wall part H of the wiring box 11, the first electric wire is inserted into the insertion port 31a of one of the insertion parts 31. The tube 10 is inserted, and the second conduit tube 10 is inserted into the insertion port 31 a of the other insertion portion 31. Then, each conduit 10 is connected to the corresponding insertion part 31 independently. Note that the two conduits 10 may be inserted into the corresponding insertion ports 31a at the same time.

  At this time, the conduit 10 is inserted until the end of each conduit 10 abuts against the abutment portion 34. Then, the latching claw 35 of each conduit 10 is elastically deformed outward by the conduit 10, and insertion into the insertion port 31a of the conduit 10 is permitted. In addition, due to the restoring force of the locking claws 35 to the original shape, each locking claw 35 enters into the concave strip portion 10b, and as shown in FIG. 5, the locking claws 35 are engaged with the outer surface of the convex strip portion 10a. Each conduit 10 is stopped by the corresponding insertion portion 31. At this time, each insertion portion 31 and the locking claw 35 are pushed and spread from the inside by the conduit 10, so the inner peripheral surface of the insertion portion 31 and the locking claw 35 are pressed against the outer peripheral surface of the conduit tube 10. Thus, each conduit 10 is held by each insertion portion 31.

  As a result, each conduit 10 is held by the insertion portion 31 into which each conduit 10 is inserted, and each conduit 10 is connected to the wiring box 11 by the insertion portion 31. That is, as shown in FIG. 1, the two conduits 10 are connected to the upper side wall 12 a (wiring box 11) via the conduit connection part 30.

  As shown in FIG. 4, in a state where the two conduits 10 are inserted into the insertion space S in the conduit connection part 30, a part of both conduits 10 enters the communication part 33, respectively. The outer surfaces come into contact with each other in the communication portion 33. In addition, since each conduit 10 is held in the insertion portion 31 and is in contact with each other, the pair of conduits 10 are positioned in the insertion space S in the insertion state with respect to the conduit connection portion 30. There is no deviation. Therefore, the pair of conduits 10 are connected to the wiring box 11 by the conduit connection part 30 in a state where they are in contact with each other.

According to the above embodiment, the following effects can be obtained.
(1) A conduit connecting portion 30 is integrally formed on the upper side wall 12 a and the lower side wall 12 b of the wiring box 11, and an insertion space S is formed inside the conduit connecting portion 30. Then, by inserting the two conduits 10 into the insertion space S, the two conduits 10 can be connected to the wiring box 11 while being in contact with each other. Therefore, there is no situation in which the mounting hubs interfere with each other as in the case where each of the pair of conduits 10 is connected to the upper side wall 12a using separate mounting hubs. Can be easily connected to.

  (2) Further, the two conduits 10 are connected to the wiring box 11 in contact with each other by the conduit connecting part 30. For this reason, for example, compared with the case where a pair of insertion part 31 is formed in a cylindrical shape, respectively, and the outer surface of both insertion parts 31 is joined, and the conduit connection part 30 is formed, it joins in this embodiment. Since there is no portion, the conduit connection portion 30 can be made compact. Therefore, the upper wall 12a and the lower wall 12b can be made compact by reducing the size of the conduit connection part 30 which is a part (connection part) for connecting the conduit 10 to the wiring box 11, The physique of the wiring box 11 can be made compact. And since the physique of the wiring box 11 is made compact, the wiring box 11 can be installed even in a small installation space.

  (3) The conduit connection portion 30 includes an insertion port 31a that allows the two conduits 10 to be inserted individually one by one, and the single conduit 10 that is inserted into the wiring box alone. Two insertion portions 31 that can be connected to 11 are arranged side by side. For this reason, the conduit 10 inserted in each insertion port 31 a is connected to the wiring box 11 while being individually held by each insertion portion 31. Therefore, the conduit 10 can be connected to the wiring box 11 in a stable state with the conduit 10 inserted into each insertion port 31a. As a result, the single conduit 10 can be stably connected to the wiring box 11 by inserting the single conduit 10 into the insertion portion 31, and the conduit 10 can be connected to the wiring box 11. Can be easily performed.

  (4) The insertion port 31 a is formed with a larger diameter than the through hole 18. For this reason, by using the conduit connection part 30, it is possible to connect the conduit 10 having a larger diameter than the small-diameter conduit that can be connected to the through hole 18 to the wiring box 11. Therefore, two types of conduits 10 having different diameters can be connected to the wiring box 11.

  (5) The conduit connection part 30 is integrally formed on the upper side wall 12a and the lower side wall 12b of the wiring box 11. For this reason, when connecting the conduit 10 to the wiring box 11, it is not necessary to connect a member (a mounting hub in the background art) separate from the wiring box 11 to the wiring box 11. Can be easily connected.

  (6) A locking claw 35 is formed in the conduit connecting portion 30. When the conduit 10 is inserted into the insertion port 31a, the locking claw 35 is elastically deformed outward and is inserted into the insertion port 31a. The insertion of the conduit tube 10 is allowed, and the locking claw 35 is locked to the recess 10b. For this reason, it is possible to prevent the electric conduit 10 from coming out of the insertion port 31a by the engagement of the engaging claws 35 and the concave strip portion 10b, and the electric conduit 10 can be reliably connected to the wiring box 11.

  (7) The upper side wall 12a and the lower side wall 12b are formed with through holes 18 communicating with the respective insertion ports 31a, and a contact portion 34 is formed on the outer peripheral side of the through hole 18. For this reason, when the conduit 10 is inserted into the insertion port 31a, the end of the conduit 10 abuts against the abutting portion 34, and the conduit 10 is prevented from entering the wiring box 11. Can do.

In addition, you may change the said embodiment as follows.
As shown in FIG. 6, it is good also as the wiring box 40 which provided the conduit connection part 30 which can connect the two conduits 10 to the upper side wall 12a and the lower side wall 12b, respectively. Also in this case, the conduit connection part 30 can be made compact. For this reason, when the conduit 10 is connected using the mounting hub, even if only three conduits 10 can be connected to the upper side wall 12a and the lower side wall 12b, the electrical wire is formed by forming the conduit connection part 30. Four pipes 10 can be connected. That is, by forming the conduit connection part 30, the number of conduits 10 that can be connected to the wiring box 11 can be increased without increasing the size of the wiring box 11.

  -In embodiment, although the insertion part 31 was materialized in the conduit connection part 30 formed in two places, the insertion part 31 is formed in three or more places, and connects the three or more conduit pipes 10 in parallel. You may embody in the wiring box 11 provided with the possible conduit connection part 30. FIG.

In the embodiment, each plug-in portion 31 has a substantially cylindrical shape, but may be changed to a shape close to a square tube shape, a triangular tube shape, or the like as long as the conduit 10 can be held.
-In embodiment, although the conduit tube 10 formed in the uneven | corrugated shape was used, you may use what the outer peripheral surface is not formed in the uneven | corrugated shape.

  -In embodiment, although it was set as the wiring box 11 which formed the conduit connection part 30 in the upper side wall 12a and the lower side wall 12b as a wall part, among the bottom wall 12 which comprises the wall part H, and each side wall 12a-12d It is good also as the wiring box 11 which formed the conduit connection part 30 in at least one of these.

  -In embodiment, although it was set as the conduit connection part 30 in which a pair of insertion part 31 was arranged in parallel, the conduit connection part 30 is made into the cylinder shape which makes a planar view long hole shape (track shape), and the conduit connection When the plurality of conduits 10 are inserted into the insertion space S of the portion 30, the conduits 10 may be configured to contact each other.

  In the embodiment, the two conduits 10 are inserted into the respective insertion portions 31, and the two conduits 10 are connected to the wiring box 11 by the conduit connection portion 30. The conduit 10 may be inserted into only one of the insertion portions 31 and the single conduit 10 may be connected to the wiring box 11 by the conduit connection portion 30.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(1) the communication unit according to claim 1 claims, characterized in that formed on the region corresponding to the region inside the area of the virtual circle formed along the outer circumferential surface of the insertion portion adjacent overlap Item 4. The wiring box according to any one of items 3 to 3 .

The perspective view which shows the state which connected the conduit tube to the wiring box of embodiment. The front view which shows the wiring box of embodiment. The top view which shows the wiring box of embodiment. The top view which shows the state which connected the conduit to the conduit connection part. Sectional drawing which shows the state which connected the conduit tube to the wiring box. The perspective view which shows the state which connected the conduit tube to the wiring box of another example.

Explanation of symbols

  H: Wall part, S: Insertion space, 10 ... Electric conduit, 10a ... Convex part, 10b ... Concave part, 11, 40 ... Wiring box, 18 ... Through hole, 30 ... Conduit connection part, 31 ... Difference Insertion part, 31a ... insertion port, 33 ... communication part, 34 ... contact part, 35 ... latching claw.

Claims (3)

It is formed in a box shape, and is a wiring box in which a plurality of conduits are connected to the wall,
A conduit connecting portion is integrally formed on the wall portion, and the conduit connecting portion is provided with an insertion port that allows each end of each conduit tube to be individually inserted in the axial direction. Are inserted side by side, and each insertion port is communicated by a communication portion formed between adjacent insertion ports, and a plurality of conduits are inserted in contact with each other inside the conduit connection portion. A wiring box characterized in that a series of insertion spaces is provided, and the plurality of conduits are connected to the wall portion by inserting the plurality of conduits into the insertion space. The conduit has a convex and concave portion that is continuously formed in the axial direction to form an uneven shape, and a locking claw that engages the concave portion is formed at the conduit connecting portion. The wiring box according to claim 1. A through hole communicating with each insertion port is formed in the wall portion, and a diameter of the insertion port is formed larger than a diameter of the through hole, and each insertion port is formed on an outer peripheral side of the through hole. The wiring box according to claim 1, further comprising a contact portion with which an end portion in the axial direction of the conduit tube inserted into the contact portion comes into contact.

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