JPH08126156A - Pull box - Google Patents

Abstract

PURPOSE: To obtain a pull box whose cover can be fixed or removed easily without relying upon set screws. CONSTITUTION: Two pairs of resilient pieces having 'hooked' forward end are provided, while facing each other, along the fringe of a cover 3. A case 2 to be fixed with the cover 1 is provided with an engaging part 7 by bending a set of opposing open ends 4 inward and then 'hooking' the forward end of the open end 4 thus bent. When the cover 3 is fixed, it is brought into press contact against an opening 1. Consequently, the 'hooked' resilient piece 8 of the cover 3 is bent to be engaged with the 'hooked' part 7 of the case 2 thus realizing one-touch fixing. When the cover 3 is pulled, the resilient piece 8 is bent to be disengaged from the 'hooked' part thus realizing one-touch removal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pull box used as a connection box or a branch box when connecting outdoor wirings to indoor wirings or branching indoor wirings.

[0002]

2. Description of the Related Art Pull boxes are used for connecting outdoor wirings to indoor wirings and for branching indoor wirings.

The pull box comprises a box-shaped case 2 having an opening 1 and a lid 3 attached to the opening 1 of the case 2, as shown in FIG. The ends 4 are bent inward to form joints 5 with the lid 3, and mounting holes 6 with thread grooves are formed at the four corners of the joints 5, and as shown in FIG. Holes 6 corresponding to the holes 6 are provided at four corners of the lid 3 and are detachably attached with screws.

As described above, this pull box is used for connecting outdoor wiring to indoor wiring and branching indoor wiring from each other. It can be mounted on the wall or ceiling. That is, after a hole for inserting a wire and a bolt hole for mounting are provided on a side surface surrounding the opening 1 of the case 2 or on a bottom surface facing the opening 1 in accordance with a wiring path and a mounting position, a wall surface of a building. Or it can be mounted on the ceiling. Then, in the hole for inserting the electric wire of the case 2 attached to the wall surface or the ceiling, for example, as shown in FIG.
Introduce outdoor wiring, indoor wiring, etc. to connect and branch the introduced wiring.

[0005]

However, in the pull box in which the lid is attached to the case by the above screwing, the attachment of the pull box to the building and the wiring to the pull box are not performed at the same time. Since wiring is performed after the pull box is attached, the lid of the pull box is kept removed until then to facilitate wiring. Therefore, it is necessary to store the screws until after the wiring is completed, which often causes a problem of losing the screws.

Further, at this time, since the pull box is attached to a wall surface near the ceiling or the ceiling for safety, the lid is attached or removed with one hand while the other hand is used to prevent the lid from falling. I had to install and remove the screws, which was a difficult task in high places. Moreover, since the screws may be accidentally dropped during the work, not only the workability is poor, but there is also a problem from the viewpoint of safety.

At this time, the collected screws are
Since the above-mentioned work is a work at a high place, it is troublesome, and therefore the lid may be attached without removing the screws,
There is a danger that an accident may occur due to the fall of the lid, and there is a dangerous problem.

Further, at this time, when the lid is attached to the case, since the thickness of the case is thin, the thread groove can be cut by only about two threads, so that it is difficult to engage the screw when screwing in.
Moreover, when the lid is attached, there is a problem that the strength is weak.

Therefore, an object of the present invention is to prevent problems such as loss of screws at the time of construction, and to improve the work of attaching and detaching the lid at a difficult high place. It is an object of the present invention to provide a pull box that is improved in strength and does not cause safety problems such as dropping and falling of a lid after attachment.

[0010]

In order to solve the above-mentioned problems, in the first invention, a case is provided in which a wire insertion hole is formed in a side surface surrounding the opening, a bottom surface facing the opening, or both. In a pull box consisting of a lid detachably attached to the opening of the case, opposite opening ends of the opening are bent inward, and an engaging portion is formed at the bent opening end, and the engaging That is, an elastic piece that fits with the section is provided on the back side of the lid.

In the second aspect of the invention, one of the elastic members forming a pair with the lid is provided with a hook-shaped hooking portion which engages with the engaging portion.

According to a third aspect of the present invention, there is provided a case in which a hole for inserting an electric wire is formed in a side surface surrounding the opening, a bottom surface facing the opening, or both, and a lid detachably attached to the opening of the case. In the pull box, a configuration is provided in which an engaging portion protruding or recessed is formed on the inner or outer periphery of the opening end, and a fitting portion having a protrusion or recess that fits with the engaging portion is provided on the peripheral edge of the lid. Was adopted.

[0013]

In the first aspect of the invention thus constructed, when the lid is attached to the opening of the case, the elastic piece is provided on the back side of the lid, so that the opening end formed toward the inside of the opening is engaged. Can be fitted with a part. At this time, the elastic piece bends to fit with the open end, so that the lid can be attached with one touch. On the other hand, when the lid is removed, the elastic piece bends to disengage from the open end, contrary to when the lid is attached, so the lid can be removed with one touch. .

In the second invention, when the lid is removed, the hook provided on the elastic piece of the lid engages with the engaging portion of the opening, and the lid can be held to prevent the lid from falling off.

According to the third aspect of the present invention, the engaging portion formed on the outer periphery of the open end is provided so as to be fitted with the fitting portion provided along the peripheral edge of the lid. Do. On the other hand, when removing the lid, the fitting between the fitting portion of the lid and the engaging portion of the opening end is released and removed. At this time, if the fitting portion of the lid or the engaging portion of the open end is made of an elastic material, the lid can be attached and detached with one touch.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a pull box according to the first invention as a first embodiment.

The pull box is detachably attached to a box-shaped case 2 in which a wire insertion hole is formed on a side surface surrounding the opening 1 or a bottom surface facing the opening 1 and the opening 1 of the case 2. It consists of a rectangular lid 3.

The case 2 is formed by bending the opening end 4 of the opening 1 inward, and of the bent opening ends 4, a pair of opposing opening ends 4 are bent at the tips thereof in a V shape. , The engaging portion 7 is formed. On the other hand, the lid 3 has
Four elastic pieces 8 whose tip is formed in a V shape are attached, and the elastic pieces 8 as a set of two cover pieces 3 are attached.
Are arranged in a line along the edges of and are opposed to each other as shown in FIG.

This embodiment is constructed as described above, and the lid 3 is attached to the case 2 of the pull box in the following manner.
The elastic piece 8 of the lid 3 and the engaging portion 7 of the case 2 are put together to form the lid 3
Is pressed against the opening 1. Then, the elastic piece 8 shown in FIG. 2 contacts the engaging portion 7 of the case, and the elastic piece 8 bends and is press-fitted therein. Therefore, the "K" shape is fitted to the tip of the "K" shape of the case as shown in FIG. 2, and the lid 3 is locked. At this time, the lid 3 comes into contact with the joint portion 5 in which the peripheral edge of the lid 3 is bent, and the lid 3 is prevented from falling into the opening 1. In this way, the lid 3 can be attached to the case 2 with one touch by simply pushing it into the case 2.
Even when the pull box is mounted vertically on the wall surface or when the lid 3 is mounted on the ceiling so as to face downward, the rattling is prevented and the lid 3 does not come off.

On the other hand, when the lid 3 attached to the case 2 is removed, when the lid 3 is pulled, the elastic piece 8 bends inward as shown by the arrow to engage with the engaging portion 7 of the case 2. Since it is released, the lid 3 can be easily removed.

If the elastic piece 8 is bent at the tip, as shown by the alternate long and short dash line in FIG. 2, the wiring inside the case will not be scratched, and the hand will be scratched during handling. It is preferable because it does not occur.

FIG. 3 shows another embodiment of the first embodiment as a second embodiment.

This is one in which a bent edge is provided around the lid 3 so as to cover the case 2, and the joint portion 5 with the case 2 can be protected from rain and wind and is of a simple type. It has a waterproof structure. Since the other parts are the same as those in the first embodiment, the description thereof will be omitted.

In FIG. 4, as a third embodiment according to the first invention, four tongue-like elastic pieces 8 are provided on the back side of the lid 3, and each of them has 9
The case 2 is attached at an angle of 0 degrees, while the case 2 has two protrusions 11 at the joints 5 on the respective sides of the opening end 4 with a space slightly larger than the width of the elastic piece 8. By providing the engaging portion 7 with the engaging portion 7, the lid 3 can be easily rotated to engage and disengage the lid 3 and the case 2 as shown in FIG. Indicates.

That is, in this case, the lid 3 is attached to the case 2
In the case of attaching to, the lid 3 and the case 2 are first displaced by 90 degrees as shown by the alternate long and short dash line in FIG. Next, when the lid 3 is rotated 90 degrees, the elastic piece 8 bends and gets over the protrusion 11,
It fits between the protrusions 11 and 11. At this time, the lid 3
6 is supported by the case 2 by the elastic piece 8 as shown in FIG. 6, so that it is held by the elasticity, and even when the pull box is vertically attached to the wall surface or the lid 3 is attached downward on the ceiling. It does not rattle or come off.

On the other hand, when the lid 3 is removed from the case 2, the lid 3 is removed by the reverse operation to the case where the lid 3 is attached.
When rotated by 0 degrees, the elastic piece 8 bends and the fitting with the stopper is released, so that the lid 3 can be removed with one touch.

FIG. 7 shows a pull box according to the second invention as a fourth embodiment.

In the pull box of this embodiment, one end of the elastic piece 8 provided opposite to the lid 3 of the pull box of the first embodiment has an "a" shape as shown in FIG. The hook 12 that engages with the engaging portion 7 of the case 2
Is provided.

In the case of this, when the lid 3 is attached, the lid 3 is pressed against the opening 1 to bend the elastic piece 8, and the hook 12 is fitted and engaged with the engaging portion 7 as shown in FIG. . On the other hand, when removing the lid 3, when the lid 3 is pulled out, the hook 12 is caught by the engaging portion 7 of the case 2, and as shown in FIG. 8, the lid 3 is held to prevent a sudden drop. For,
The lid 3 can be safely removed by sliding the lid 3 sideways.

In this case, as in the first embodiment, the inner wiring is scratched by bending the elastic piece 8 as shown by the alternate long and short dash line in FIG. 8 or cutting the portion 12 '. You can prevent it from getting on and scratching your hands.

FIG. 9 shows a second embodiment as another embodiment of the fourth embodiment.
A case in which the lid 3 covers the case 2 similarly to the embodiment is shown as a fifth embodiment. Since the other parts are the same as those in the fourth embodiment, the description thereof will be omitted.

FIG. 10 shows another embodiment of the second invention as a sixth embodiment.

This pull box is made of resin and has elasticity as a whole, and the case 2 has a pair of open ends 4 facing each other.
As shown in FIG. 11, an engaging portion 7 is formed by bending the tip of each of them into a V-shape and forming a recess 9 at each end of the K-shape. On the other hand, the lid 3 has, on the back side thereof, an "I" -shaped elastic piece 8 and a "J" -shaped hook 1
2 are provided with elastic pieces 8 each having a projection 1 that fits into a recess 9 of the engaging portion 7.
0 is provided. In the embodiment, the elastic piece 8 is attached to the lid 3
Although it is provided over the entire edge of the above, it is not limited to this and may be provided in several places.

In this embodiment, when the lid 3 is pressed against the opening 1, the elastic piece 8 is bent and the projection 10 is fitted into the recess 9 of the engaging portion 7 at the opening end 4 to engage the lid 3 with the case 2. Is performed. The other part, that is, the action of the hook 12 of the "J" -shaped elastic piece 8 is the same as that of the fourth and fifth embodiments, and the description thereof will be omitted.

Reference numeral 19 is a groove for inserting a screwdriver to pry open the lid 3.

FIG. 12 shows another aspect of the sixth embodiment as the seventh embodiment.

This one is provided with a lid on the lid 3 and
A groove 11 is provided in the joint 5 part of the lid 3 and the case 2, and a rubber packing 18 having a circular cross-section is fitted into the groove 11 to make it waterproof. Since they are the same as those in the sixth embodiment, their description will be omitted.

Reference numeral 13 is a receiver for making the protrusion of the lid 3 inconspicuous.

FIG. 13 shows a pull box according to the third invention as an eighth embodiment.

The pull box of this embodiment is made of a resin having elasticity, and as shown in FIG. 14, a pair of facing surfaces of the case 2 are provided with engaging portions 14 each having a groove 17 formed therein.
On the other hand, in the lid 3, the groove 1 of the case 2 is provided along the edge of the lid 3.
A fitting part 16 having a protrusion 15 for fitting with 7 is provided. With this, when the lid 3 is attached, when the lid 3 is pressed against the opening 1, the fitting portion 14 bends and the protrusion 15 is fitted into the groove 13 of the case 2, and the lid 3 is locked to the case 2 with one touch. It On the other hand, when removing the lid 3, when the lid 3 is pulled out, the protrusion of the fitting portion 16 and the recessed portion of the engaging portion 14 are disengaged, and the lid 3 can be easily removed. At this time, if the protrusion and the recess are formed to have a semicircular cross section as in the embodiment, it is possible to easily fit and release the protrusion and the recess.

FIG. 15 shows another embodiment of the third invention as a ninth embodiment.

As shown in FIG. 16, this is a waterproof pull box provided with a rim around the lid 3, and is a case 2
A protrusion 15 is provided on the outer circumference of one of the opposing openings to form an engaging portion 14, while a groove 17 is provided inside the cover on the lid 3 to form a fitting portion 16. In the embodiment, the protrusion 15 and the groove 17 are provided at two places on each side, but the present invention is not limited to this, and for example, over the entire edge of the opening 1 and the lid 3. It may be provided. The other parts and functions are the same as those in the eighth embodiment, and the description thereof will be omitted. Reference numeral 18 'is a waterproof packing having a plate-shaped cross section.

FIG. 17 shows another aspect of the ninth embodiment as the tenth embodiment.

In order to eliminate the protrusion of the lid 3 of the pull box shown in the ninth embodiment, the opening end 4 of the case 2 is formed smaller by the thickness of the lid 3 as shown in FIG. Therefore, the receiver 13 of the lid 3 is no longer necessary. Since the other parts are the same as those in the ninth embodiment, the description of the other parts and the operation will be omitted.

Although the box-shaped pull box has been described in the above embodiment, the pull box is not limited to this shape, and any shape of the pull box can be used as long as it has a lid. Well, for example, a cylindrical shape may be used.

[0047]

According to the first aspect of the invention configured as described above, the opposite opening ends of the opening of the case are bent inward, and an engaging portion is formed at the bent opening end. By providing the elastic piece that engages with the inside of the lid, the lid can be attached to the case without using screws, so that problems such as loss of screws during construction do not occur. Also, since the attachment / detachment can be done with one touch, even if the lid is attached at a high place, for example, even if the lid is attached to the ceiling with the lid facing down, the lid can be attached / removed with both hands. Can be done easily. Further, it is possible to provide a pull box in which strength is improved without causing safety problems such as dropping of screws during work and dropping of a lid after attachment.

According to the second aspect of the invention, in addition to the above-mentioned effect, a hook-shaped hooking portion that engages with the engaging portion is provided on one of the elastic pieces that form a pair with the lid. When removing the lid, it is possible to prevent the lid from falling and make the removal work safe and easy.

According to a third aspect of the present invention, an engaging portion is formed so as to protrude or recess along the inside or outside of the opening end of the case, and the fitting portion having the protrusion or recess for fitting with the engaging portion is provided. Since the lid is provided along the peripheral edge of the lid, the lid can be attached / detached with one touch with a simple structure without using elastic pieces, and a pull box having the same effect as that of the first invention can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment.

FIG. 2 is an enlarged cross-sectional view of a main part of the first embodiment.

FIG. 3 is an enlarged sectional view of an essential part of the second embodiment.

FIG. 4 is an exploded perspective view of a third embodiment.

FIG. 5 is a partially cutaway bottom view of the third embodiment.

FIG. 6 is an enlarged cross-sectional view of an essential part of the third embodiment.

FIG. 7 is an exploded perspective view of a fourth embodiment.

FIG. 8 is an enlarged cross-sectional view of the essential parts of the fourth embodiment.

FIG. 9 is an enlarged sectional view of an essential part of the fifth embodiment.

FIG. 10 is an exploded perspective view of a sixth embodiment.

FIG. 11 is an enlarged sectional view of an essential part of the sixth embodiment.

FIG. 12 is an enlarged sectional view of an essential part of the seventh embodiment.

FIG. 13 is an exploded perspective view of an eighth embodiment.

FIG. 14 is an enlarged sectional view of an essential part of the eighth embodiment.

FIG. 15 is an exploded perspective view of a ninth embodiment.

FIG. 16 is an enlarged sectional view of an essential part of the ninth embodiment.

FIG. 17 is an exploded perspective view of the tenth embodiment.

FIG. 18 is an enlarged sectional view of an essential part of the tenth embodiment.

FIG. 19 is an exploded perspective view of a conventional example.

FIG. 20 is an enlarged sectional view of a main part of a conventional example.

[Explanation of symbols]

 1 Opening 2 Case 3 Lid 4 Opening End 5 Joint 6 Mounting Hole 7 Engagement 8 Elastic Piece 9 Recess 10 Protrusion 11 Groove 12 Hook 13 Receiving 14 Engagement 15 Protrusion 16 Fitting 17 Recessed Groove 18 Rubber Packing 18 'Rubber packing 19 Groove (for driver)

Claims (3)

[Claims] 1. A pull box comprising a case in which a side for enclosing the opening, a bottom surface facing the opening, or both of which are formed with holes for inserting electric wires, and a lid detachably attached to the opening of the case. The opening ends of the opening facing each other are bent inward, an engaging portion is formed at the bent opening end, and an elastic piece fitted with the engaging portion is provided on the back side of the lid. Pull box. 2. The pull box according to claim 1, wherein one of the pair of elastic pieces of the lid is provided with a hook-shaped hooking portion which engages with the engaging portion. 3. A pull box comprising a case in which a hole for inserting an electric wire is formed on a side surface surrounding the circumference of the opening, a bottom surface facing the opening, or both, and a lid detachably attached to the opening of the case. A pull box in which an engaging portion protruding or recessed is formed along an inner circumference or an outer circumference of the opening end, and a fitting portion having a protruding or recess fitting with the engaging portion is provided on a peripheral edge of the lid.