JP5457490B2 - Wiring box - Google Patents

Description

  The present invention relates to a wiring box in which a conduit is connected to accommodate a wiring device or the like and protect a cable connected to the wiring device.

  Conventionally, for example, a wiring box is installed in a wall in order to install a wiring device or the like on a wall surface in a building. A cable is drawn into the wiring box, and the cable is protected by a conduit connected to the wiring box (see, for example, Patent Document 1). The protective tube as the conduit is a flexible tube in which a ring-shaped crest having the same diameter and a ring-shaped trough having the same diameter are continuously formed, and an annular groove is formed between the ring-shaped crests. Is formed. An electrical installation box as a wiring box includes a hollow square box-like box body, and a protective tube holding port is provided on the outer wall of the box body.

  The bottom wall of the electrical installation box is notched at the position communicating with the protective tube holding port, so that the protective tube can be inserted into and removed from the protective tube holding port. Is formed. In addition, a projecting piece is formed on the inner peripheral surface of the protective tube holding port. Then, when the conduit is moved from the back side of the bottom wall toward the cutout portion, the conduit is passed through the cutout portion and inserted into the protective tube holding port, the protective tube holding port is inserted into the annular groove. While the inner edge of a part fits, the said protrusion piece engages with the annular groove of a protective tube. The electrical installation box is fixed to the pillar by fixing a fixing screw penetrating the outer wall to the pillar or the like, and in the fixed state, the protective tube is connected from the bottom wall side to the protective tube holding mouth, In the connected state, movement of the protective tube in the vertical direction and radial direction is prevented.

Utility Model Registration No. 2524247

  However, in the above conventional electrical installation box, the notch opening is opened on the bottom wall side. Therefore, to connect the conduit to the protective tube holding opening, the conduit is arranged on the back side of the electrical installation box. It must be installed and moved to the electrical box in that state. Therefore, for example, when an electrical installation box is fixed to a pillar and a wall material constituting a building wall is erected on the rear surface of the electrical installation box, between the rear surface of the electrical installation box and the inner surface of the wall material In some cases, a space for arranging the conduit was not formed. As a result, there has been a problem that it becomes impossible to connect the conduit to the electrical installation box.

  In addition, to connect the conduit to the protective tube holding port, push the conduit from the bottom wall side of the electrical installation box toward the electrical installation box and force the passage through the notch for further protection. It must be inserted into the tube holding port. At this time, since the force for pushing in the conduit acts so as to press the electrical installation box forward, the force in the same direction as the above is also applied to the fixing screw penetrating the outer wall of the electrical installation box. Will work. As a result, there has been a problem in that there is a possibility that a fixing screw fixed to the column is loosened or deformed.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose is to provide a wiring box that can connect the conduit from the side of the box body and eliminate the problems that occur in the fixed screw when the conduit is connected to the box body. It is in.

In order to solve the above-mentioned problem, the invention according to claim 1 includes a box body formed in a square box shape having an opening on one side of a bottom wall and a side wall standing from the bottom wall, The left and right side walls of the box body are provided with fixing portions through which fixing screws for fixing the box body to the structure in the building can be inserted, and the upper and lower side walls of the box body are provided. is connection hole for connecting the conduit with a synthetic resin flexible forming, on the upper and lower ends of the front SL side wall, with an opening on the side of the box body, the connecting hole By forming the insertion openings that communicate with each other, the upper and lower insertion openings are formed apart from each other without communicating with each other, and the fixing portion is pressed against the structure by the fixing screw. Move along By, insertably form the conduit to the connection hole, said box to at least one of the left side wall and right side wall of the body, abutment seat abutting against the structure in the building projects outward is The fixing part is formed on the side wall opposite to the side wall formed with the corresponding seating part so as to extend in the shape of a long hole in the depth direction of the box body, and the fixing part is formed on the upper end part. The gist is that it is disposed in a facing region between the insertion opening and the insertion opening at the lower end .

According to a second aspect of the present invention, in the wiring box according to the first aspect, a recess is recessed in an opening lower surface in the insertion opening at the upper end portion of the side wall and an opening upper surface in the insertion opening in the lower end portion of the side wall. The gist is that it is formed .

(Function)
According to invention of Claim 1 or Claim 2 , while forming the fixing | fixed part which can insert a fixing screw in the left side wall and right side wall of a box main body, the side wall which opposes the side wall in which the fixing | fixed part was formed An insertion opening that opens to the side of the box body was formed, and the insertion opening was communicated with the connection hole. Therefore, on the side of the side wall, if it is ensured space, by utilizing the space, by moving the conduit along a fixed direction fixing portion pressing on the structure, the connection from the insertion openings A conduit is inserted inside. Therefore, for example, the wall material constituting the building wall is erected on the rear surface of the wiring box, and there is no space for arranging the conduit between the rear surface of the wiring box and the inner surface of the wall material. In addition, it is possible to connect the electric pipe by inserting it into the connection hole. The insertion into the side wall opening is formed, the direction extending toward the connection hole from the insertion opening, by inserting the fixing screws on the fixing portion, to fix the said fixing screws to the structure the fixing portion of the structure It is the same as the direction of pressing, and is the same as the direction of fixing the box body to the structure. Therefore, when the conduit is pushed into the connection hole from the insertion opening, the pushing direction is a direction from the box body toward the structure, and the force for pushing the conduit does not act in the front-rear direction of the box body .

  According to the present invention, it is possible to connect the conduit from the side of the box body, and it is possible to eliminate the problem that occurs in the fixed screw when the conduit is connected to the box body.

The perspective view which shows the wiring box of 1st Embodiment. The top view which shows the wiring box of 1st Embodiment. FIG. 3 is a partial cross-sectional view taken along line 3-3 of FIG. The partial side view which shows the state by which the conduit tube was connected to the wiring box. The top view which shows the state by which the conduit tube was connected to the wiring box. The perspective view which shows the wiring box of 2nd Embodiment. The top view which shows the wiring box of 2nd Embodiment. The fragmentary sectional view which shows the engagement protrusion of the wiring box of 2nd Embodiment. The top view which shows the state by which the two conduits were connected to the wiring box. The top view which shows another example of the connection method of a wiring box and a conduit. The top view which shows the connection hole of another example. The top view which shows the connection hole of another example. The top view which shows the connection hole of another example. The top view which shows the connection hole of another example. The top view which shows the connection hole of another example.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied in a wiring box will be described with reference to the drawings.
First, as shown in FIG. 1, a conduit 10 connected to a wiring box 11 made of synthetic resin will be described. The conduit tube 10 is formed of a synthetic resin material into a flexible pipe shape, and has a ridge portion 10a having a ring shape with the same diameter protruding in the circumferential direction, and a ridge portion 10b having a ring shape with the same diameter. Are repeatedly formed in a concavo-convex shape.

  Next, the wiring box 11 will be described. The wiring box 11 is formed in a rectangular box shape having an opening on one side from a rectangular bottom wall 12 and an upper side wall 12a, a lower side wall 12b, a left side wall 12c, and a right side wall 12d erected from the bottom wall 12. A formed box body 13 is provided. In addition, let the said opening side be a front surface (front surface) of the box main body 13, and let the bottom wall 12 side be a rear surface (back surface). The upper side wall 12a and the lower side wall 12b face each other up and down, and the left side wall 12c and the right side wall 12d face each other right and left. On the outer surface of the left side wall 12c, a contact seat portion 14 having a certain thickness is formed to protrude outward, and on the outer surface of the right side wall 12d, the contact seat portion 14 is not formed and is formed in a flat shape. . Further, fixing holes 15 penetrating the side walls 12c and 12d are formed in the left side wall 12c and the right side wall 12d at three locations so as to extend in the shape of a long hole in the front-rear direction of the box body 13, and each fixing hole 15 is formed. Are formed so that the fixing screws 17 can be inserted therethrough. And in the left side wall 12c and the right side wall 12d, the peripheral part of the fixing hole 15 is provided in the box main body 13 as a fixing part for fixing the box main body 13 to the structure in the building by the fixing screw 17. Yes. When the fixing screw 17 inserted through the fixing hole 15 is fixed to the structure, the peripheral portion of the fixing hole 15 in the left side wall 12c or the right side wall 12d is pressed against the structure by the fixing screw 17.

  A circular hole 18 is formed in each of the left side portions of the upper side wall 12a and the lower side wall 12b so as to penetrate the side walls 12a and 12b. As shown in FIG. 2, engagement protrusions 18 a are provided so as to protrude inward of the circular holes 18 at positions facing each other on the inner peripheral surface of each circular hole 18. A small-diameter engagement portion 19 having an elongated plate shape is installed on the right side in each circular hole 18 so as to extend in the front-rear direction of the box body 13, and a direction orthogonal to the axis of the small-diameter engagement portion 19. The engaging protrusion 18a is formed at a position where When a small-diameter conduit (not shown) having an outer diameter smaller than that of the conduit 10 is inserted into the circular hole 18 from the upper side of the wiring box 11, the small-diameter engaging portion 19 and the left of the circular hole are inserted. The engaging protrusion 18a provided on the inner peripheral surface of the portion engages with the concave portion provided on the small-diameter electric conduit. As a result, the engagement protrusion 18a and the small diameter engagement portion 19 can be brought into contact with the convex portion of the small diameter conduit, and are connected to the circular hole 18 in a state where the end of the small diameter conduit is prevented from coming off in the vertical direction. It is like that. When the small-diameter engaging portion 19 is removed from the circular hole 18 and the conduit 10 is inserted into the circular hole 18, the pair of engaging protrusions 18a are engaged with the concave portions 10b, respectively. As a result, the pair of engaging projections 18a can be brought into contact with the protruding strip portion 10a of the conduit 10, and are connected to the circular hole 18 in a state in which the conduit 10 is prevented from coming off.

  As shown in FIGS. 1 and 2, connection holes 20 each having a long hole shape are formed through the side walls 12a and 12b on the right side of the upper and lower side walls 12a and 12b. Each of the connection holes 20 is formed so as to extend linearly from the right end edge of the upper side wall 12a and the lower side wall 12b toward the center part, and the edge located at the center part of the upper and lower side walls 12a, 12b is an arc shape. Is formed. As shown in FIGS. 1 and 3, insertion openings 21 are formed at both upper and lower ends of the right side wall 12 d so as to penetrate the right side wall 12 d, and each insertion opening 21 is a side of the box body 13. It is formed to open to the right. Each insertion opening 21 is formed in the right side wall 12d opposite to the peripheral edge of the fixing hole 15 of the left side wall 12c. Each connection hole 20 is formed so as to communicate with the insertion opening 21, and the conduit 10 can be inserted into each connection hole 20 from each insertion opening 21. As shown in FIGS. 4 and 5, the opening width of the insertion opening 21 is formed to be the same as or slightly larger than the outer diameter of the protruding portion 10 a of the conduit 10.

  As shown in FIGS. 2 and 3, an engagement protrusion 22 as an engagement portion is formed along the inner periphery of each connection hole 20. Each engagement protrusion 22 is formed so as to extend linearly from the insertion opening 21 side of the connection hole 20 toward the back of the connection hole 20 and further along an arc of the connection hole 20. The opening width of the connection hole 20, that is, the length between the inner surfaces facing each other in the width direction of the connection hole 20 is constant along the length direction of the connection hole 20. Moreover, the opening width of the connection hole 20 is formed slightly shorter than the outer diameter of the protruding portion 10 a of the conduit 10. When the conduit 10 is inserted into the connection hole 20 from the insertion opening 21, the engaging protrusion 22 can be engaged with the concave portion 10 b of the conduit 10.

  In each engagement ridge 22, a retaining portion 23 having a thickness dimension larger than that of the engagement ridge 22 is formed on the end edge on the insertion opening 21 side. Each retaining portion 23 is formed so as to protrude outward from one surface which is the outer surface of the box body 13. In each retaining portion 23, an inclined portion 23 a is formed at a tip portion located on the insertion opening 21 side, and each inclined portion 23 a is inclined obliquely upward from the insertion opening 21 side toward the depth of the connection hole 20. It is formed as follows. In each retaining portion 23, the portion other than the inclined portion 23a is formed to have a constant thickness, and the thickness dimension is determined by the width of the concave portion 10b, that is, the interval between the adjacent convex portions 10a. It is set to be large.

  As shown in FIG. 2, each connection hole 20 is provided with a cover plate 24 for closing the connection holes 20, and the cover plate 24 has connection pieces 25 provided at two locations on the outer peripheral edge thereof. It is provided in the connection hole 20 by being connected to the inner peripheral edge of the joint protrusion 22. Reinforcing pieces 26 crossing the insertion openings 21 are provided on the insertion openings 21 side of the connection holes 20, and the reinforcing pieces 26 are provided with engaging pieces 27 provided at both ends in the length direction. It is provided by being connected to the inner peripheral edge of the strip 22.

Next, the usage method and operation of the wiring box 11 having the above configuration will be described.
First, the construction site of the wiring box 11 will be described. As shown in FIG. 1, a pillar 16 as a structure is erected in a building, and a building wall W is configured by a pair of wall members 28 erected on both front and rear surfaces of the pillar 16. It has become. In order to install the wiring box 11 in the building wall W, two types of methods are mainly employed. In the first method, one wall member 28 of the pair of wall members 28 is erected at a position on the front side of the wiring box 11 fixed to the column 16, and the wiring box 11 is fixed to the column 16. The other wall member 28 is erected on the rear surface side of the wiring box 11. In the second method, after one wall member 28 of the pair of wall members 28 is erected at a position on the rear surface side of the wiring box 11 fixed to the column 16 and the wiring box 11 is fixed to the column 16 The other wall member 28 is erected on the front side of the wiring box 11.

  Next, the usage method of the wiring box 11 is demonstrated concretely. First, in the connection hole 20 of the upper side wall 12a, the connecting piece 25 and the erection piece 27 are separated from the engagement protrusion 22, respectively, the cover plate 24 and the reinforcing piece 26 are removed from the connection hole 20, and the connection hole 20 is opened. Let Next, when one wall member 28 is erected at a position on the front side of the wiring box 11, the opening end of the box body 13 is disposed so as to abut on the rear surface of the one wall member 28 erected. Then, the outer surface of the contact seat 14 is brought into contact with the side surface of the column 16. In addition, when one wall member 28 is erected at a position on the rear surface side of the wiring box 11, the box body 13 is disposed so that the opening end of the box body 13 is flush with the front surface of the column 16. The outer surface of the contact seat 14 is brought into contact. Then, among the three fixing holes 15 formed in the left side wall 12c, the fixing screw 17 is inserted through the fixing hole 15 located at the center, and the fixing screw 17 is fixed to the column 16 to connect the wiring box 11 to the column 16. To fix.

  At this time, the fixing screw 17 is fixed to the column 16 from the fixing hole 15 so as to be substantially orthogonal to the side surface of the column 16. Then, the peripheral portion of the fixing hole 15 of the left side wall 12 c is pressed against the side surface of the column 16 through the contact seat portion 14 by the fixing screw 17. Further, there is no column 16 on the side of the right side wall 12d opposite to the left side wall 12c where the fixing hole 15 is formed, and a space is formed. In addition, since the one wall member 28 is erected on the front or rear surface of the wiring box 11, no space is formed on the front or rear surface of the box body 13 in the wiring box 11.

  Subsequently, from the right side of the wiring box 11 fixed to the column 16, the insertion direction of the fixing screw 17 with respect to the fixing hole 15, that is, the direction in which the peripheral edge of the fixing hole 15 in the left side wall 12 c is pressed against the column 16 The tube 10 is moved in the radial direction toward the wiring box 11. And while inserting the end part of the conduit 10 in the insertion opening 21 opened to the right of the box main body 13, the retaining part 23 used as the front-end | tip of the engagement protrusion 22 is inserted in the concave part 10b. . Further, when the conduit tube 10 is pushed into the connection hole 20, the retaining portion 23 is smoothly inserted into the concave strip portion 10b by the inclined portion 23a. When the conduit 10 is pushed into the connection hole 20, the thickness dimension of the retaining portion 23 becomes thicker than the width of the recessed portion 10 b, so that the pair of projecting portions 10 a are pressed outward by the retaining portion 23. It is elastically deformed and expanded. Then, when the conduit 10 is pushed into the connection hole 20 with the pair of protruding portions 10a being pushed open, the retaining portion 23 passes through the recessed portion 10b and is positioned outside the conduit 10. The ridge portion 10b is disposed at a position engageable with the outer surface of the ridge portion 10a located above the concave ridge portion 10b. At the same time, the engaging ridge 22 located deeper in the connection hole 20 than the retaining portion 23 engages in the circumferential direction of the concave portion 10b.

  In order to move the conduit 10 through the insertion opening 21 in the connection hole 20, the conduit 10 is pressed toward the back of the connection hole 20. At this time, the direction in which the connection hole 20 extends from the insertion opening 21 side to the back is the same as the direction in which the peripheral edge of the fixing hole 15 in the left side wall 12 c is pressed against the column 16 by the fixing screw 17. Therefore, the conduit 10 is pressed toward the side surface of the column 16 to which the fixing screw 17 is fixed, and the wiring box 11 is also pressed toward the side surface of the column 16 to which the fixing screw 17 is fixed. Accordingly, when the conduit 10 is connected, no force acts on the wiring box 11 in the front-rear direction, and the fixing screw 17 fixed along the direction in which the wiring box 11 is pressed is also provided. There is no force acting in the direction intersecting the axis. Therefore, even if the fixing hole 15 is formed to extend in the front-rear direction of the left side wall 12c, there is no possibility that the fixing screw 17 is displaced along the direction in which the fixing hole 15 extends.

  As shown in FIGS. 4 and 5, finally, when one wall member 28 is erected at a position on the front side of the wiring box 11, the other wall member 28 is erected on the rear surface side of the box body 13. The building wall W is constructed. When one wall member 28 is erected at a position on the rear surface side of the wiring box 11, the other wall member 28 is erected so that the opening end of the box main body 13 abuts on the back surface thereof. Build the wall W. As a result, the wiring box 11 is installed in the building wall W.

  Even if a pair of upper and lower ridges 10a adjacent to the ridge 10b and the engaging ridge 22 can be brought into contact with each other and a force to move the conduit 10 in the axial direction is applied. The movement is prevented by the contact between the pair of upper and lower ridges 10a and the engagement ridge 22. Moreover, even if the force which moves to the insertion opening 21 direction acts with respect to the conduit tube 10, since a pair of retaining part 23 contact | abuts the outer surface of the conduit tube 10 (convex strip part 10a), the conduit tube 10 is inserted. Easy movement to the opening 21 side is prevented. That is, the conduit 10 is connected to the wiring box 11 in a state where the conduit 10 is prevented from coming off.

According to the wiring box 11 of the above embodiment, the following effects can be obtained.
(1) The insertion opening 21 is formed in the right side wall 12d of the box body 13, and the insertion opening 21 and the connection hole 20 are communicated. Therefore, even if no space is formed on the front surface or the rear surface side of the wiring box 11, the conduit 10 can be connected to the wiring box 11 by using the insertion opening 21. In particular, when one of the wall members 28 is erected in advance or when the wiring box 11 is installed in a place where an obstacle exists in the vicinity of the pillar 16, the conduit 10 is formed on the side of the wiring box 11. The conduit 10 can be connected to the wiring box 11 as well. Therefore, it is not necessary to perform an operation of fixing the wiring box 11 to the column 16 in a state where the conduit 10 is connected to the wiring box 11 in advance.

  (2) The direction in which the insertion opening 21 and the connection hole 20 extend is such that the fixing screw 17 is inserted into the fixing hole 15, and the peripheral portion of the fixing hole 15 in the left wall 12 c is pressed against the column 16 by the fixing screw 17. This is the same as the direction in which the box body 13 is fixed. Therefore, unlike the case where the conduit 10 is connected from the bottom wall 12 side, a force in the front-rear direction acts on the wiring box 11 when the conduit 10 is connected, and the fixing screw 17 is moved back and forth by the wiring box 11. It is prevented from being pressed in the direction. As a result, it is possible to eliminate the problem that the fixing screw 17 is loosened or deformed during the connection work of the conduit 10. In particular, although the fixing hole 15 is formed in a long hole shape, there is no possibility that the fixing screw 17 moves in the direction in which the fixing hole 15 extends or is displaced. As a result, it is possible to maintain the state in which the wiring box 11 is fixed to the pillar 16 with a single fixing screw 17, and a problem that distortion occurs in the subsequent installation of the wiring device or the like in the wiring box 11. Can be prevented.

  (3) The engaging protrusion 22 and the retaining portion 23 are formed in the connection hole 20. Therefore, when the conduit 10 is inserted into the connection hole 20, the movement of the conduit 10 in the axial direction and the radial direction can be restricted by the engagement protrusion 22 and the retaining portion 23, and the wire is inserted into the connection hole 20. The pipe 10 can be connected in a state where it is prevented from coming off. Therefore, unlike the case where another member such as an adapter is separately connected to the connection hole 20 and the conduit 10 is connected to the wiring box 11 using the separate member, the connection work of the conduit 10 to the wiring box 11 can be easily performed with one touch. Can be done.

  (4) On the inner periphery of the connection hole 20, the engagement protrusion 22 is formed so as to continuously extend, and is continuously engaged with the recess 10 b of the conduit 10. For this reason, even if a force in the axial direction acts on the conduit 10 connected to the connection hole 20, the area where the protruding portion 10 a and the engaging protrusion 22 abut increases, and the connection of the conduit 10 is increased. The escape from the hole 20 can be prevented.

  (5) Since the retaining portion 23 is provided with the inclined portion 23a, when the conduit 10 is inserted into the connection hole 20, the inclined portion 23a is quickly inserted into the recessed portion 10b, and further, the protruding portion The part 10a can be gradually expanded by the inclined part 23a. Therefore, the inclined portion 23 a can assist the operation of inserting the conduit 10 beyond the retaining portion 23 into the connection hole 20.

  (6) The thickness dimension of the retaining portion 23 is formed to be thicker than the width of the concave portion 10b, and the retaining portion 23 comes into contact with the outer surface of the convex portion 10a. The problem of passing through the opening 21 and coming out can be prevented. In particular, in order for the electric conduit 10 to exceed the retaining portion 23, both the protruding strip portions 10a adjacent to the recessed strip portion 10b must be pushed outward. Therefore, for example, the retaining portion 23 is a projection formed so as to face the inner periphery of the engaging protrusion 22, and compared with a case where the conduit 10 is elastically deformed in the radial direction and the projection is passed through. Thus, a greater force is required when the conduit 10 exceeds the retaining portion 23. Therefore, as compared with the case where the protrusion is provided as a retaining portion, it is possible to reliably prevent the conduit tube 10 from coming out of the connection hole 20 through the insertion opening 21.

(Second Embodiment)
Hereinafter, a second embodiment in which the present invention is embodied in a wiring box will be described with reference to the drawings.
As shown in FIG. 6, the wiring box 30 according to the second embodiment is similar to the wiring box 11 according to the first embodiment. The bottom wall 31 has a quadrangular shape, and the top is erected from the periphery of the bottom wall 31. The side wall 32a, the lower side wall 32b, the left side wall 32c, and the right side wall 32d are provided with a box body 33 formed in a square box shape having an opening on one surface. The bottom wall 31 has a larger outer shape than the bottom wall 12 of the box body 13 of the first embodiment, and the upper, lower, left and right side walls 32a to 32d are the upper, lower, left and right side walls 12a to 12a of the box body 13 of the first embodiment. The length in the length direction is longer than 12d.

  In addition, a contact seat portion 29 is formed on the outer surface of the left side wall 32c, as in the first embodiment, the fixing holes 34 are formed in three places on the left side wall 32c, and the outer surface is planar. Fixing holes 34 are formed in two places on the right side wall 32d. The left side wall 32c and the right side wall 32d are provided with a fixing hole 34, and the peripheral part of the fixing hole 34 is provided in the box body 33 as a fixing part. As shown in FIG. 7, a pair of circular holes 35 are formed on the left side of the upper side wall 32a and the lower side wall 32b, penetrating the side walls 32a and 32b. Engaging protrusions 35a similar to the engaging protrusions 18a of the first embodiment protrude from the opposing positions of the inner peripheral surfaces of the circular holes 35, respectively. Further, the small-diameter engagement portion 36 similar to the small-diameter engagement portion 19 of the first embodiment is provided in one (left in FIG. 7) circular hole 35, and the other (right in FIG. 7) circular hole 35. Is provided with a cover plate 37. One circular hole 35 is formed so that the end of the conduit 10 or the small-diameter conduit can be connected, and the other circular hole 35 is formed so that the end of the conduit 10 can be connected.

  A connection hole 38 having a horizontal U shape and a long hole shape in plan view is formed in the right side portions of the upper side wall 32a and the lower side wall 32b, respectively, through the side walls 32a and 32b. Each of the connection holes 38 is extended in the length direction from the connection hole 20 of the first embodiment. In addition, insertion openings 39 are formed at both upper and lower ends of the right side wall 32d, and each insertion opening 39 is formed to open to the right, which is a side of the box body 33. Each insertion opening 39 is formed in the right side wall 32d facing the peripheral edge of the fixing hole 34 of the left side wall 32c. Each connection hole 38 is formed so as to communicate with the insertion opening 39, and the conduit 10 can be inserted into each connection hole 38 from each insertion opening 39. The opening width in the width direction of each connection hole 38 and the opening width of the insertion opening 39 are formed to be the same as or slightly larger than the outer diameter of the protruding portion 10 a of the conduit 10.

  As shown in FIGS. 7 and 8, an engagement protrusion 40 as an engagement portion is formed along the inner periphery of each connection hole 38, and this engagement protrusion 40 is the engagement protrusion of the first embodiment. The length between the inner edges facing each other is set in the same manner as the engagement protrusion 22 of the first embodiment. In each engagement protrusion 40, a retaining portion 41 similar to the retaining portion 23 of the first embodiment is formed at a position that is substantially in the center in the length direction of the insertion opening 39 side and the connection hole 38. In addition, each retaining portion 41 is formed with an inclined portion 41a. As shown in FIG. 7, a cover plate 42 having the same configuration as the cover plate 24 of the first embodiment is connected to the inner peripheral edge of the engaging protrusion 40 by a connecting piece 43 at the back of each connection hole 38. Yes. At the center of each connection hole 38 and the insertion opening 39 side, a reinforcing piece 44 is installed at a position where the engaging protrusions 40 face each other, and the connecting hole 38 is reinforced from the inside by these reinforcing pieces 44.

  In order to use the wiring box 30 of the second embodiment, the cover plate 42 and the reinforcing piece 44 are first removed from the connection hole 38. Next, as shown in FIG. 6, the outer surface of the abutting seat 29 is brought into contact with the side surface of the column 16, and the fixing screw 17 is fixed to the column 16 from the fixing hole 34 of the left side wall 32c. 16 is fixed. At this time, the peripheral portion of the fixing hole 15 in the left side wall 32 c is pressed toward the column 16 by the fixing screw 17, and a space is formed on the right side of the wiring box 30 fixed to the column 16. Then, similarly to the first embodiment, the two conduits 10 are respectively inserted and connected from the insertion opening 39 to the connection hole 38 using the space on the right side of the wiring box 30. Then, as shown in FIG. 9, the retaining portions 41 come into contact with the outer surfaces of the respective conduits 10, and the conduits 10 are prevented from passing through the insertion openings 39 and coming out from the connection holes 38. Therefore, in the second embodiment, in addition to the same effects as in the first embodiment, the following effects can be exhibited. That is, two conduits 10 can be connected to one connection hole 38.

Each embodiment can be modified and embodied as follows.
In each embodiment, the inclined portions 23a and 41a of the retaining portions 23 and 41 may be omitted.

  In each embodiment, the retaining portions 23 and 41 are formed so as to protrude outward from the engaging ridges 22 and 40. However, the retaining portions 23 and 41 are disposed outside the engaging ridges 22 and 40. You may form so that it may protrude toward the direction and inward.

  In each embodiment, the engaging protrusions 22 and 40 are formed so as to continuously extend along the inner circumference of the connection holes 20 and 38, but within a range in which the conduit tube 10 can be prevented from coming out in the axial direction. If present, the engaging protrusions 22 and 40 may be intermittently formed along the inner periphery of the connection holes 20 and 38. Further, as the engaging portion, an engaging protrusion that can be engaged with the concave portion 10b instead of the engaging protrusions 22 and 40 may be provided on the inner periphery of the connection holes 20 and 38.

  In each embodiment, the contact seats 14 and 29 may be omitted. Further, when the abutment seats 14 and 29 are omitted, the insertion openings 21 and 39 and the connection holes 20 and 38 of the right side walls 12d and 32d are deleted, and the insertion opening is provided in at least one of the upper part and the lower part of the left side walls 12c and 32c. 21 and 39 may be formed, and the connection holes 20 and 38 may be communicated with the insertion openings 21 and 39. Alternatively, the contact seats 14 and 29 may be formed on both side walls of the left side walls 12c and 32c and the right side walls 12d and 32d.

  In each embodiment, the abutment seats 14 and 29 are formed only on the left side walls 12c and 32c, but the abutment seats 14 and 29 of the left side walls 12c and 32c are omitted, and the abutment seats 14 and 29 are abutted against the right side walls 12d and 32d. The contact portions 14 and 29 may be formed. At this time, the insertion openings 21 and 39 may be formed in at least one of the upper and lower portions of the left side walls 12c and 32c, and the connection holes 20 and 38 may be formed to communicate with the insertion openings 21 and 39.

In each embodiment, the retaining portions 23 and 41 may be omitted.
In each embodiment, the engagement protrusions 22 and 40 may be omitted.
In each embodiment, the circular holes 18 and 35 may be omitted.

  In each embodiment, as shown in FIG. 10, the conduit 10 is fixed to the side surface of the column 16 in advance using a fixing member K. Then, the box bodies 13 and 33 are rotated 180 degrees in the circumferential direction, and the wiring boxes 11 and 30 are moved toward the column 16 so that the right side walls 12 d and 32 d are directed toward the column 16. At this time, when fixing the wiring boxes 11 and 30 to the column 16, the box bodies 13 and 33 are moved along the direction in which the fixing screws 17 are inserted into the fixing holes 15 and 34. The conduit 10 is inserted into the connection holes 20 and 38 from the insertion openings 21 and 39 formed in the right side walls 12d and 32d, and further connected.

  -As shown in Drawing 11, you may change connection hole 20 in wiring box 11 of a 1st embodiment. In other words, the circular hole 18 is removed from the upper side wall 12a and the lower side wall 12b of the box body 13, and a connection hole 50 having a long hole shape is formed. Each connection hole 50 is formed such that its length direction extends in a direction perpendicular to the depth direction of the box body 13. Each connection hole 50 is formed to extend from the left side wall 12c side of the upper side wall 12a and the lower side wall 12b to reach the adjacent right side wall 12d, and each connection hole 50 has insertion openings 51 at both upper and lower ends of the right side wall 12d. Is formed. Each connection hole 50 is formed so that the insertion opening 51 side is wide toward the opening side of the box body 13. An engagement protrusion 22 is formed along the inner surface of the connection hole 50, and a retaining portion 23 is formed on the engagement protrusion 22.

  On the side of the insertion opening 51 in the connection hole 50, a connection member 52 extends from the inner edge of the engagement protrusion 22 located on the opening side of the box body 13. The connecting member 52 is formed in an elongated plate shape, and is integrally formed with the engaging protrusion 22 via a connecting piece 53 extending from the inner edge of the engaging protrusion 22. In the state in which the connection member 52 is integrated with the engagement protrusion 22, the edge that faces the inside of the connection hole 50 of the connection member 52 and the engagement that is located on the opening side of the box body 13 on the back side of the connection hole 50. The edge of the protrusion 22 is located on the same straight line.

  The opening width on the side of the insertion opening 51 in each connection hole 50 (the length between the inner surfaces facing each other in the width direction of the connection hole 50) is the opening width on the back side in the connection hole 50 (opposite the width direction of the connection hole 50) The length between the inner surfaces) is wider. And the 1st connection part 50a is formed in the insertion opening 51 side in each connection hole 50, and the 2nd connection part 50b is formed in the back | inner side rather than the 1st connection part 50a in the connection hole 50. That is, the opening width in the first connection portion 50a is formed wider than the opening width in the second connection portion 50b.

  In the connection hole 50 provided with the 1st connection part 50a and the 2nd connection part 50b, the conduit 10 can be connected to the 2nd connection part 50b by the engagement protrusion 22 similarly to 1st Embodiment. It has become. Moreover, in the 1st connection part 50a, the conduit 10 can be connected to the 1st connection part 50a by the engagement protrusion 22 and the connection member 52 by the side of the bottom wall 12 of the box main body 13. FIG. Further, by removing the connecting member 52 from the engaging protrusion 22 and removing it, the large diameter conduit 60 having a larger diameter than the conduit 10 can be connected to the first connecting portion 50a. ing. The large-diameter conduit 60 includes a ridge that has a larger diameter than the ridge 10 a of the conduit 10 and a recess that has a larger diameter than the recess 10 b of the conduit 10.

  Then, in the connection hole 50, the conduit 10 is inserted into the connection hole 50 from the insertion opening 51 on the side of the wiring box 11 with the connection member 52 connected to the engagement protrusion 22. Then, the engaging ridge 22 and the connecting member 52 are inserted into the concave portion 10 b of the conduit 10, and the convex ridge 10 a of the conduit 10 is engaged with the engaging ridge 22 and the connecting member 52. When the conduit 10 is further pushed into the connection hole 50, the conduit 10 is slid along the length direction of the connection hole 50 from the insertion opening 51 side to the back side of the connection hole 50. Finally, the conduit 10 is connected to the second connection part 50b.

  In addition, after connecting the conduit 10 to the 2nd connection part 50b, the connection member 52 is removed and the large diameter conduit 60 is inserted from the insertion opening 51 to the 1st connection part 50a. Then, the engaging protrusion 22 is inserted into the concave portion of the large diameter conduit 60, the engaging protrusion 22 engages with the convex portion of the large diameter conduit 60, and the large diameter electric wire is connected to the first connecting portion 50a. A tube 60 can be connected. That is, it becomes possible to connect the conduit 10 and the large diameter conduit 60 to the connection hole 50, and the connected conduits have different diameters from the conduit 10 and the large diameter conduit 60. be able to.

  Here, in a state where the conduit 10 and the large-diameter conduit 60 are connected to the connection hole 50, a straight line extending in the length direction of the connection hole 50 is defined as an axis L, and a center line in the radial direction of the conduit 10 is centered. A center line M in the radial direction of the line N and the large diameter conduit 60 is defined as a center line M. At this time, the center line N of the conduit 10 is located on the axis L, but the center line M of the large diameter conduit 60 is not located on the axis L.

  Moreover, in the wiring box 11 provided with the connection hole 50, after connecting the conduit 10 to the 2nd connection part 50b, without removing the connection member 52 from the connection hole 50, the engagement protrusion 22 and the connection member 52 are connected. The conduit 10 may be connected to the first connection portion 50a by using it. Furthermore, you may connect only the large diameter conduit 60 to the 1st connection part 50a which removed the connection member 52, without connecting the conduit 10 to the 2nd connection part 50b.

  In addition, you may change the connection hole 50 provided with the 1st connection part 50a and the 2nd connection part 50b shown in the said FIG. 11 as shown in FIG. That is, the first connection portion 50 a is formed with a wide connection hole 50 and an engaging protrusion 22 located on the insertion opening 51 side so as to expand toward the opening of the box body 13 and the bottom wall 12, respectively. Further, in the first connection portion 50 a, the connection member 52 has an inverted U shape and extends from the inner edge of the engagement protrusion 22, and the connection member 52 is also provided with a retaining portion 23. Then, by removing the connection member 52 and inserting the conduit 10 into the connection hole 50 from the insertion opening 51, the conduit 10 can be connected to the second connection portion 50b, and further to the first connection portion 50a. A large-diameter conduit 60 can be connected. In a state where the conduit 10 and the large-diameter conduit 60 are connected to the connection hole 50, the center line N of the conduit 10 and the center line M of the large-diameter conduit 60 are respectively positioned on the axis L and connected. Note that the conduit 10 may be connected to the first connection portion 50a without removing the connection member 52 from the connection hole 50.

  In the wiring box 11 shown in FIGS. 11 and 12, the fixing portion is formed at the peripheral edge of the fixing hole 15 formed in the left side wall 12c and the right side wall 12d, but only one of the left side wall 12c and the right side wall 12d is formed. The fixing hole 15 may be formed in the peripheral portion, and the peripheral portion may be used as the fixing portion. At this time, the insertion opening 51 is formed in either one of the upper part and the lower part of the side wall opposite to the side wall in which the fixing portion is formed, and the connection hole 50 communicating with the insertion opening 51 is formed in the upper side wall 12a or the lower side wall. You may form in 12b. Alternatively, the insertion openings 51 may be formed in the upper and lower portions of the side wall opposite to the side wall on which the fixing portion is formed, and the connection holes 50 communicating with the insertion opening 51 may be formed in the upper side wall 12a and the lower side wall 12b. . Further, the retaining portion 23 may be omitted, and the engaging protrusion 22 may be omitted. When the engaging protrusion 22 is omitted, the large-diameter conduit 60 is directly fitted to the first connecting portion 50a and the conduit 10 is directly fitted to the second connecting portion 50b. The opening width is formed slightly smaller.

  -As shown in FIG. 13, you may change the connection hole 20 in the wiring box 11 of 1st Embodiment. That is, the circular holes 18 are removed from the upper side wall 12a and the lower side wall 12b of the box main body 13 to form connection holes 70 having a long hole shape. Each connection hole 70 is formed such that its length direction extends in a direction perpendicular to the depth direction of the box body 13. Each connection hole 70 is formed so as to extend from the left side wall 12c side of the upper side wall 12a and the lower side wall 12b to reach the adjacent right side wall 12d, and the positions corresponding to the upper and lower ends of the right side wall 12d are inserted in each connection hole 70 respectively. An opening 71 is formed.

  Engagement ridges 22 are formed along the peripheral surface of each connection hole 70, and the opening width, which is the length between the inner surfaces facing each other in the width direction of connection hole 70, is formed constant. A connecting member 73 that extends linearly along the engaging protrusion 22 located on the opening side of the box body 13 extends from the engaging protrusion 22 at a position on the back side of the insertion opening 71 in the connection hole 70. It is installed. By providing the connection member 73 in the connection hole 70, the opening width of the connection hole 70 on the insertion opening 71 side (the length between the engaging protrusions 22 facing the width direction of the connection hole 70) is It is formed wider than the opening width on the back side (the length between the engagement protrusion 22 and the connection member 73 facing the connection hole 70 in the width direction). And the 1st connection part 70a is formed in the insertion opening 51 side in each connection hole 70, and the 2nd connection part 70b is formed in the back | inner side rather than the 1st connection part 70a in the connection hole 70.

  In the connection hole 70 provided with the 1st connection part 70a and the 2nd connection part 70b, the conduit 10 can be connected to the 2nd connection part 70b similarly to 1st Embodiment. Further, the large diameter conduit 60 can be connected by the engagement protrusion 22 in the first connection portion 70a. Then, by removing the connection member 73 from the engagement protrusion 22, the large-diameter conduit 60 connected to the first connection portion 70a is slid toward the second connection portion 70b, and the second connection The large diameter conduit 60 can be connected to the portion 70b. Further, in the wiring box 11 provided with the connection hole 70, after the connection member 73 in the second connection portion 70b is removed and the large-diameter conduit 60 is connected to the second connection portion 70b, the first connection portion 70a is also large. A diameter conduit 60 may be connected.

  -In addition, you may change the connection hole 70 as follows. That is, as shown in FIG. 14, in the second connection portion 70 b in the connection hole 70, the connection member 73 may be formed in an inverted U shape and extend from the inner edge of the engagement protrusion 22.

  Furthermore, the connection hole 38 in the wiring box 30 of the second embodiment may be changed as follows. That is, as shown in FIG. 15, connecting holes 38 extending in the length direction are formed in the upper side wall 32a and the lower side wall 32b, and this connecting hole 38 is longer than the connecting hole 38 of the second embodiment. . An engaging protrusion 40 is formed along the inner surface of the connection hole 38. Then, the first connection portion 38a is formed in approximately half of the connection hole 38 on the insertion opening 39 side, and the second connection portion 38b is formed in approximately half of the connection hole 38 on the back side of the first connection portion 38a. A connecting member 45 having an inverted U shape is integrally formed with the engaging protrusion 40 at the second connecting portion 38b. The first connection portion 38a is formed wider than the second connection portion 38b.

  Then, one large-diameter conduit 60 can be connected to the first connecting portion 38a, and two conduits 10 can be connected to the second connecting portion 38b on which the connecting member 45 is formed. . Furthermore, if the connecting member 45 is removed, the two large diameter conduits 60 can be connected to the second connecting portion 38b.

  In the wiring box 11, the fixing portion is formed at the peripheral portion of the fixing hole 15 formed in the left side wall 12c and the right side wall 12d, but the fixing hole 15 is formed only in one of the left side wall 12c and the right side wall 12d. The peripheral portion may be a fixed portion. At this time, the insertion opening 71 is formed in either one of the upper part and the lower part of the side wall opposite to the side wall in which the fixing portion is formed, and the connection hole 70 communicating with the insertion opening 71 is formed in the upper side wall 12a or the lower side wall. You may form in 12b. Alternatively, the insertion openings 71 may be formed in the upper and lower portions of the side wall opposite to the side wall on which the fixing portion is formed, and the connection holes 70 communicating with the insertion opening 71 may be formed in the upper side wall 12a and the lower side wall 12b. . Further, the retaining portion 23 may be omitted, and the engaging protrusion 22 may be omitted. When the engaging protrusion 22 is omitted, the large-diameter conduit 60 is directly fitted to the first connecting portion 70a, and the connecting hole 70 is directly fitted to the second connecting portion 70b. The opening width is formed slightly smaller.

  In the box main bodies 13 and 33 of each embodiment, the insertion openings 21 and 39 are formed in the upper and lower portions of the left side walls 12c and 32c, and the connection holes 20 and 38 are formed so as to communicate with the insertion openings 21 and 39. May be. At this time, the insertion openings 21 and 39 of the right side walls 12d and 32d may be omitted.

  In the wiring boxes 11 and 30, the connection holes 20, 38, 50 and 70 are formed in only one of the upper side walls 12a and 32a and the lower side walls 12b and 32b, and communicated with the connection holes 20, 38, 50 and 70. The insertion openings 21, 39, 51, 71 may be formed in the left side walls 12c, 32c or the right side walls 12d, 32d.

  In the wiring boxes 11 and 30, the fixing portions are formed at the peripheral portions of the fixing holes 15 and 34 formed in the left side walls 12c and 32c and the right side walls 12d and 32d, but the left side walls 12c and 32c and the right side walls 12d and 32d are formed. The fixing holes 15 and 34 may be formed only in any one of these, and the peripheral part may be used as the fixing part. At this time, an insertion opening may be formed in one of the upper part and the lower part of the side wall opposite to the side wall in which the fixing portion is formed, and a connection hole communicating with the insertion opening may be formed. Alternatively, an insertion opening may be formed in both upper and lower portions of the side wall opposite to the side wall on which the fixing portion is formed, and a connection hole communicating with the insertion opening may be formed. Further, insertion openings are formed in the upper and lower portions of the left side walls 12c and 32c and the right side walls 12d and 32d, respectively, and connection holes communicating with the insertion openings are formed in two locations on the upper side walls 12a and 32a and the lower side walls 12b and 32b. May be. Further, insertion openings are formed above or below the left side walls 12c and 32c and the right side walls 12d and 32d, and connection holes communicating with the insertion openings are formed at two locations on the upper side walls 12a and 32a or the lower side walls 12b and 32b. May be. In the above modification, the circular holes 18, 35, etc. are deleted depending on circumstances.

  In each embodiment, the connection holes 20 and 38 are formed on the right side of the upper side walls 12a and 32a and the lower side walls 12b and 32b, and the insertion openings 21 and 39 are formed only on the right side walls 12d and 32d. It may be changed. For example, in the box main bodies 13 and 33 in which the fixing portions are formed in the peripheral portions of the fixing holes 15 and 34 of the left side walls 12c and 32c and the right side walls 12d and 32d, both side portions of the upper side walls 12a and 32a and the lower side walls 12b and 32b. The connecting holes 20 and 38 may be formed in the left and the insertion openings 21 and 39 may be formed in the left side walls 12c and 32c and the right side walls 12d and 32d respectively. Alternatively, the connection holes 20 and 38 may be formed only in the left side portions of the upper side walls 12a and 32a and the lower side walls 12b and 32b, and the insertion openings 21 and 39 may be formed only in the left side walls 12c and 32c. The circular holes 18, 35, etc. are deleted depending on circumstances.

  -In the wiring box 30 shown in 2nd Embodiment, the fixing hole 34 is formed only in any one of the left side wall 32c and the right side wall 32d, and the peripheral part is made into a fixing | fixed part. Insertion openings 39 are formed in both the upper and lower portions of the left side wall 32c and the right side wall 32d, and connection holes 38 communicating with the insertion openings 39 are formed in two locations on the upper side wall 32a and the lower side wall 32b. Also good. Furthermore, the insertion opening 39 may be formed in the upper part or the lower part of the left side wall 32c and the right side wall 32d, and the connection holes 38 communicating with the insertion opening 39 may be formed in two places on the upper side wall 32a or the lower side wall 32b. The circular holes 18, 35, etc. are deleted depending on circumstances.

-In each embodiment, although the conduit 10 was formed in uneven | corrugated shape, you may use the conduit tube which comprised cylindrical shape and the outer surface was formed smoothly.
-In each embodiment, although the wiring boxes 11 and 30 were fixed to the pillar 16 as a structure, you may fix the wiring boxes 11 and 30 to the H-shaped steel, steel frame, wall material, etc. as a structure.

  A fixing portion protruding in the vertical direction of the box main bodies 13 and 33 may be formed on at least one of the left side walls 12c and 32c and the right side walls 12d and 32d, and the fixing holes 15 and 34 may be formed in the fixing portions.

Further, the technical idea that can be grasped from the embodiment will be described below.
(1) engaging portions wiring box you characterized in that it is formed so as to extend continuously along the inner periphery of the connection hole.

(2) The fastened securely retaining portion, wiring box characterized in that the inclined portion inclined in a direction to connect the conduit to the connection hole.

  DESCRIPTION OF SYMBOLS 10 ... Conduit, 10a ... Projection part, 10b ... Concave part, 11, 30 ... Wiring box, 12, 31 ... Bottom wall, 12a, 32a ... Upper side wall, 12b, 32b ... Lower side wall, 12c, 32c ... Left side Wall, 12d, 32d ... right side wall, 13, 33 ... box body, 14, 29 ... abutment seat, 16 ... pillar as structure, 17 ... fixing screw, 20, 38, 50, 70 ... connection hole, 21 , 39, 51, 71 ... insertion opening, 22, 40 ... engaging protrusion as an engaging portion, 23, 41 ... retaining portion, 38a, 50a, 70a ... first connecting portion, 38b, 50b, 70b ... first 2 connection parts, 60 ... large diameter conduit.

Claims (2)

A bottom wall, comprising a box body formed in a rectangular box shape having an opening on the more one surface and upright side walls from the bottom wall, the left wall and right wall of the box body, the structure of the building A fixing part through which a fixing screw for fixing the box body can be inserted, and a connection for connecting a flexible conduit made of synthetic resin to the upper side wall and the lower side wall of the box body Holes are formed,
The upper and lower ends of the front SL side wall, with an opening on the side of the box body, by insertion opening which communicates with the connection hole is formed respectively, upper and lower insertion openings away without communicating with each other The wire tube inserted into the insertion opening is moved along the direction in which the fixing portion is pressed against the structure by the fixing screw, so that the wire tube can be inserted into the connection hole ,
At least one of the left side wall and the right side wall of the box body is formed with an abutment seat portion that protrudes outward and abuts against a structure in the building, and a side wall that faces the side wall on which the corresponding seat portion is formed. The fixing portion is formed so as to extend in the shape of a long hole in the depth direction of the box body, and the fixing portion is disposed in a facing region between the insertion opening at the upper end and the insertion opening at the lower end. wiring box, characterized in that is. The wiring box according to claim 1 , wherein a recess is formed in a lower surface of the opening at the insertion opening at the upper end of the side wall and an upper surface of the opening at the insertion opening at the lower end of the side wall .