JP2533208Y2 - U-shaped groove - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage U-shaped groove buried in the ground.

[0002]

2. Description of the Related Art Conventionally, concrete U-shaped grooves for drainage have been used. However, since the U-shaped groove made of concrete is heavy, there is a problem that it is not easy to transport and handle.

For this reason, a U-shaped groove made of synthetic resin, which is lightweight and easy to carry and handle, has been used in place of the U-shaped groove made of concrete. However, since the U-shaped groove made of synthetic resin is not as rigid as the U-shaped groove made of concrete,
When buried in the ground, there is a problem that both side walls of the U-shaped groove are pushed inward by earth pressure and deformed.

Therefore, in order to cope with this problem, as shown in FIG. 9, a horizontal member 100 is bridged between the upper ends of both side walls of the synthetic resin U-shaped groove 101 at an appropriate interval and fixed with screws 102 or the like. The side walls of the U-shaped groove 101 were reinforced so as not to be pushed inward by earth pressure.

[0005]

However, the work of fixing the lateral member 100 with the screw 102 or the like as described above is troublesome, and in particular, a large number of lateral members 100 are inserted into the U-shaped groove 101 having a long burying distance. In the case of fixing, a lot of trouble and time are required, and there is a problem that the construction efficiency is reduced.

[0006]

In order to solve the above-mentioned problems, the U-shaped groove of the present invention is formed of a synthetic resin U-shaped groove main body having opposing protrusions formed at upper end edges of both side walls. And a cross member holding member is fitted over the holding member, and the cross member is bridged between the holding members to be held.

[0007]

The U-shaped groove according to the present invention is a simple operation in which the horizontal member is fitted to the protrusion of the U-shaped groove main body, and the horizontal member is bridged between the holders and held. Since it is possible to attach the frame material, no troublesome screwing work is required at all,
The mounting operation can be completed in a short time even if the number of the horizontal members is large. Then, the upper ends of the side walls of the U-shaped groove main body are stuck from the inside by the horizontal member, and the side walls can be prevented from being pushed inward by earth pressure.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a U-shaped groove of the present invention, FIGS. 2, 3 and 4 are a plan view, a side view and a longitudinal sectional view of a synthetic resin U-shaped groove body, respectively. FIG. 6 is a cross-sectional view showing a buried state of the U-shaped groove of the present invention, FIG. 6 is a perspective view of the horizontal member holder and the projection, and FIGS. FIG.

The U-shaped groove shown in FIG. 1 is composed of a U-shaped groove main body 1 made of synthetic resin, a horizontal member holder 2 and a horizontal member 3.
The horizontal member holders 2 are fitted to the protruding portions 11 formed opposite to the upper edges of both side walls of the U-shaped groove main body 1, and the horizontal member 3 is inserted between the holders 2. It has a structure of being bridged and held.

As shown in FIGS. 1 to 4, the U-shaped groove body 1 has swelling portions 12 and non-swelling portions 13 alternately formed on a bottom wall and both side walls to increase rigidity and pressure resistance. Ears 14, 14 having hook-shaped cross sections are formed outside the upper edges of both side walls.
Are formed inside the upper edge, and a plurality of sets of the opposing protrusions 11, 11 are formed at regular intervals.

The projection 11 has a wedge shape as shown in FIG. 6, and the upper surface thereof is flush with the upper surface of the ear portion 14. The front surface 11a of the projection 11 is It is inclined inward and upward. Therefore, as shown in FIG. 5, the front surfaces of the opposing projections 11 and 11 have a downwardly extending relationship with each other.

The horizontal member holder 2 fitted to the projection 11
Is obtained by punching and bending a metal plate having a spring property. As shown in FIG. 6, a horizontal top plate 21 having a bolt insertion hole 21a formed therein and a lower portion extending from the rear end of the top plate 21 are formed. L-shaped rear plate portion 22 that bends further and further forward, and top plate portion 2
1, a front plate portion 23 that is bent obliquely rearward and downward from the front end of the front plate portion 23, a hem plate portion 24 that is bent diagonally forward and downward from the lower end of the front plate portion 23, and a pair of transverse member holding pieces that are folded forward from both sides of the front plate portion 23. 2
5, 25, and a pair of protrusion holding pieces 26, 26 that are bent rearward from both sides of the front plate 23.

As shown by a dashed line in FIG. 5, the cross member holder 2 has a rear plate portion 22 having an L-shaped cross section engaged with a lug portion 14 of a U-shaped groove main body and a hem plate portion 24 having a projection. By pushing the top plate portion 21 in the direction of the arrow in a state where the top plate portion 21 is in contact with the portion 11, the top plate portion 21 can be elastically fitted to the projection portion 11 with one touch. When fitted in this manner, the front plate portion 23 of the horizontal member holder 2 elastically contacts the front surface 11a of the protrusion 11 from below and the rear plate portion 22 engages with the ear portion 14 from below.
Since the horizontal member holder 2 does not come off from the protrusion 11 and the protrusion holding pieces 26 sandwich the side surfaces of the protrusion 11 from both sides, the horizontal member holder 2 is Does not shift in the longitudinal direction.

On the other hand, the horizontal member 3 is made of a synthetic resin or a metal square bar, a square pipe, or an extruded member having an inverted U-shaped cross section. It is cut obliquely so as to contact the portion 23 without any gap. The horizontal member 3 is extended between the front plates 23 of the horizontal member holders 2 with the upper ends of both side walls of the U-shaped groove body 1 spread outward, and both ends of the horizontal member 3 are sandwiched between the horizontal members. In a state of being sandwiched between the pieces 25, 25, it is supported and held by the hem plate 24. Accordingly, both ends of the horizontal member 3 are vertically sandwiched by the front plate portion 23 and the hem plate portion 24, and at the same time, are horizontally sandwiched by the horizontal member holding pieces 25, so that the horizontal member 3 is detached from the horizontal member holder 2. Never.

The bottom wall and both side walls of the U-shaped groove main body 1 have a connection bulging portion 15 larger than the bulging portion 12 and a connecting non-bulging portion 15 adjacent thereto, as shown in FIGS. The protrusions 16 are formed at regular intervals. A mark indicating the center point of the bulging portion 15, a thin portion or a hole 15a is provided on the bottom wall of the bulging portion 15 for connection, and a rib 16a of a non-bulging portion 16 for connection to be described later is provided. Shallow groove 15 to fit
b and 15b are provided. Both side walls of the connection bulging portion 15 are formed in an arc wall centered on the mark, the thin portion or the hole 15a, and the lugs 14a are also formed in an arc shape. On the other hand, the portion of the U-shaped groove main body 1 where the non-bulging portion 16 for connection is formed has its ear cut off,
Two ribs 16a, 16a are provided on the outer surfaces of the bottom wall and both side walls.
Are formed. The protrusion dimensions of the ribs 16a, 16a are substantially the same as the depth dimension of the connection bulging portion 15. And at the upper end of both side walls of this rib forming part,
A wedge-shaped protrusion 1 similar to the protrusion 11 protruding inward
6b and 16b are formed opposite to each other, and the bottom wall is provided with a mark or hole 16c indicating the same center point as described above.

Therefore, the U-shaped groove main body 1 is taken along the line A--A in FIG.
The swelling portion 15 for connection and the non-swelling portion 16 for connection along the cutting line
Even if it is a 1 to 4 m fixed-length U-shaped groove main body 1 having a connection swelling portion 15 at one end and a connection non-swelling portion 16 at the other end, these are connected. In this case, as shown in FIG. 7, the connecting non-bulging portion 16 of the other U-shaped groove main body 1 is fitted inside the connecting bulging portion 15 of the other U-shaped groove main body 1, and the rib 16a is recessed. While fitting into the groove 15b, the positions of both marks, thin portions or holes 15a, 16c are matched,
As shown in FIG. 8, when the mark, the thin portion or the hole is stopped with a screw 4 or the like, the ribs 16a,
7a can be swung freely in a state of contacting the arc-shaped side walls and the bottom wall of the connection bulging portion 15 and can be swung straight or in FIG.
As shown in the figure, the connection can be made even in a state of being freely bent within a certain angle range. The rear plate portion 22 of the transverse member holder 2 is attached to the ear portion 14a of the connection bulging portion 15.
When the holder 2 is elastically fitted to the projection 16b of the non-bulging portion 16 for connection in the manner described above, the connection portion can be easily fixed. 2,2
By bridging the horizontal member 3 between them, it is possible to reinforce the connection portion so as not to be pushed inward by earth pressure. As described above, the horizontal member holder 2 can also be used as a fixture for the connection portion. In the above connection, the waterproof material 5 is packed between the ribs 16a, 16a as shown in FIGS.
It is desirable to prevent water leakage from the connection.

The U-shaped groove main body 1 can be efficiently manufactured by a method in which a fixed-size material sheet of various plastics is supplied to a continuous press molding machine and continuously pressed and simultaneously joined together. When the U-shaped groove main body 1 is manufactured, a rib-shaped joint 17 as shown in FIGS. 1 to 4 is formed. The material sheet has a softening melt viscosity of 10
Polypropylene, polycarbonate, polyethylene, polystyrene, polyethylene terephthalate, nylon, acrylic, polybutylene terephthalate, polyphenylene sulfide, or a thermoplastic resin sheet made of these alloys or a polyvinyl chloride resin sheet, which is as low as 10,000 poise or less, is used. In particular, when the tough U-shaped groove main body 1 is manufactured, the above-mentioned thermoplastic resin layer and a mat of glass long fibers having an average fiber length of 10 mm or more (preferably a mat formed by stacking continuous spiral glass long fibers) )
Sheets having a structure in which three or more layers are alternately laminated, or 7 to 50 m
A sheet having an air-permeable structure composed of a glass fiber of m and a granular or powdery material of the above resin is preferably used.

In the U-shaped groove having the above-mentioned structure, the horizontal member holders 2 and 2 are elastically fitted to the opposite projections 11 and 11 of the U-shaped groove body 1 by one-touch as described above. The horizontal member 3 can be attached by a simple operation of merely spanning and holding the horizontal member 3 between 2 and 2, and the conventional cumbersome screw fixing work is not required at all. Therefore, even when the buried distance of the U-shaped groove is long and it is necessary to attach a large number of the transverse members 3, the attaching work can be completed efficiently in a short time.
Construction efficiency is improved.

Also, in the connection operation of the U-shaped groove main body 1, since the U-shaped groove main body 1 has the connection swelling portion 15 and the connection non-swelling portion 16 at each end, the above-described operation is performed. As described above, the connection non-bulging portion 16 of the other U-shaped groove main body 1 is fitted inside the connection bulging portion 15 of the one U-shaped groove main body 1 and fixed with the screw 4 and the horizontal member holder 2. By doing so, the connection can be made straight or bent at a desired angle. Therefore, no joints or the like are required at all, which is convenient especially when buried beside a winding road.

The U-shaped groove having the above structure may be buried in the ground as it is. However, as shown in FIG.
The floating prevention plate 6 is disposed below the non-bulging portion 13 of the U-shaped groove main body 1, and holes are formed in the both ears 14, 14 of the U-shaped groove main body 1 by a drill or the like from the bolt insertion holes 21 a of the horizontal member holder 2. It is preferable to insert the bolts 7,7, fix the floating prevention plate 6 with the bolts 7,7 and the nuts 8,8, and bury them in the ground. The bolts 7, 7
The hole of the ear part for passing through may be made in advance,
In such a case, drilling work is not required on site, so construction efficiency is improved. When buried in this way, the U-shaped groove main body 1 tends to float by the earth pressure acting on both side walls of the U-shaped groove main body 1 and both side walls are pushed inward. It is blocked by the underground floating prevention plate 6,
Further, the pushing of the both side walls is also prevented because the horizontal members 3 stick the upper ends of the both side walls from the inside. In addition, in order to prevent the U-shaped groove main body 1 from floating, a method such as inserting a rod body such as a long hook bolt into the ear portions 14 and driving it into the ground can be used.

In the above embodiment, the swelling portions 12 and the non-swelling portions 13 are alternately provided on the bottom wall and both side walls. The flow becomes better.

[0023]

As is apparent from the above description, the U-shaped groove of the present invention is formed on the side of the synthetic resin U-shaped groove main body having opposing protrusions formed on the upper end edges of both side walls. With the structure in which the holding member is fitted and the horizontal member is stretched between the holding members and held, the mounting operation of the horizontal member can be easily performed, and no troublesome screw fixing work is required. Therefore, there is an effect that the construction efficiency is improved, and it is possible to prevent both side walls of the U-shaped groove main body from being pushed inward by earth pressure by the horizontal member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a U-shaped groove of the present invention.

FIG. 2 is a plan view of a synthetic resin U-shaped groove main body.

FIG. 3 is a side view of a synthetic resin U-shaped groove main body.

FIG. 4 is a longitudinal sectional view of a synthetic resin U-shaped groove main body.

FIG. 5 is a cross-sectional view showing a buried state of the U-shaped groove of the present invention.

FIG. 6 is a perspective view of a transverse member holder and a protrusion.

FIG. 7 is a plan view of a connection portion of the U-shaped groove main body.

FIG. 8 is a longitudinal sectional view of a connection portion of a U-shaped groove main body.

FIG. 9 is a perspective view of a conventional U-shaped groove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 U-shaped groove main body made of synthetic resin 11 Projection part 2 Cross member holder 3 Cross member

Claims (1)

(57) [Scope of request for utility model registration] 1. A cross member holder is fitted to a projection of a synthetic resin U-shaped groove body having opposing projections formed on upper end edges of both side walls, and a cross member is provided between the holders. A U-shaped groove, which is held over a bridge.