JPH028499Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a plastic trough used for underground or above-ground wiring of power lines, communication lines, etc.

(Prior Art) A conventional plastic trough is constructed by connecting a large number of fixed-sized troughs with connecting portions at both front and rear ends, and burying the plastic troughs as a trough of a predetermined length. However, in order to adjust the length of the troughs at corners, ends, etc., it is necessary to prepare troughs of various lengths and use them as needed, and many types of troughs must be manufactured. Since it is necessary to manufacture molds individually, the cost is high, and there is also the problem that inventory management requires time and effort.

(Problems that the invention attempts to solve) This invention solves these conventional problems,
It was completed with the aim of creating a plastic trough that could be easily installed to a desired length depending on the installation location without the need to manufacture and store many types of troughs.

(Means for Solving the Problems) The plastic trough of the present invention, which attempts to solve the above-mentioned problems, has a main body having a U-shaped cross section, in which an insertion end of the other end is fitted into one end of the main body. At one end of the main body having the same cross-sectional shape as the said sizing trough, there is a sizing trough formed by expanding a receiving step part of a size that can be expanded, and a cutting trough which is cut from the sizing trough to an appropriate length from the tip. A step part having the same shape as the step part is expanded and formed, and the other end is provided with a connecting plate part extending forward from the inner surface of the side plate part of the main body part and a support plate part extending forward from the outer surface of the bottom plate part of the main part. The sizing trough is connected by fitting its insertion end into the receiving part at one end of the joint trough, while the cutting trough has its end face on the cutting side connected to the joint trough. It is characterized in that the connecting plate part and the supporting plate part of the joint trough are connected by abutting against the abutting end surface of the other end, and by attaching the connecting plate part and the support plate part to the inner surface of the side plate part and the outer surface of the bottom plate part on the cutting side.

(Example) Next, the present invention will be explained in detail with reference to the illustrated example.

Reference numeral 1 denotes a sizing trough made of a plastic material such as glass fiber reinforced polyester resin, and having a main body portion having a U-shaped cross section with side plates 3, 3 erected on both sides of a bottom plate portion 2; Connecting parts 4 and 5 are provided at both front and rear ends. The connecting portion 4 at one end on the front side of the main body has an inner surface of the end edge as an enlarged portion, and an outer surface of the end edge of the other end of the adjacent sizing trough 1, that is, a receptacle into which an insertion end 5a (to be described later) can be fitted. The bottom plate portion 2 of the stepped portion 4a is formed on the stepped portion 4a.
A is provided with an engaging portion 6 such as a through hole. In addition, the other connecting portion 5 has an outer edge portion formed into an insertion end portion 5a that can be fitted into the receiving step portion 4a of the adjacent sizing trough 1, and an outer surface of the bottom plate portion 2b of the insertion end portion 5a. A convex engaging portion 7 that is engaged with the engaging portion 6 is provided on the trough 1, so that a plurality of sizing troughs 1 can be easily connected without separating them back and forth. Reference numeral 8 denotes a joint trough made of the same material and having the same cross-sectional shape as the sizing trough 1, and the joint trough 8 is provided at one end with a connecting portion 9 of the same type as the connecting portion 4 provided at one end of the sizing trough 1. The end is a connecting part 10 with a cutting part 17 of a cutting trough 16, which will be described later. That is, the connecting portion 9 provided at one end of the joint trough 8
1 is a sizing trough 1 in which a receiving part 9a is formed on the inner surface of the end edge like the one connecting part 4 of the sizing trough 1, and an engagement hole 11a is provided in the bottom plate part 11 of the receiving part 9a. It can be connected to the connecting part 5 of
Also, the connecting portion 10 at the other end of the joint trough 8
The abutting end surface 12 with the end surface 17a of the cutting portion 17 of the cutting trough 16, the supporting plate portion 13 stretched forward from the outer surface of the bottom plate portion 18, and the connecting plate portion 15 stretched forward from the inner surfaces of the side plate portions 14, 14. , 15, and the end surface 17a of the cutting part 17 of the cutting trough 16 is connected to the connecting part 1.
When the cutting trough 1 is butted against the abutting end surface 12 of
It is supported by the support plate part 13 of the bottom plate part 2 of the cutting trough 16, and the connecting plate parts 15, 15 are also attached to the inner surfaces of the both side plate parts 3, 3 of the cutting trough 16, so that the cutting trough 16 is prevented from moving vertically and horizontally. Concatenated. 16 is fixed size trough 1
This cutting trough 16 connects the cutting part 17 to the connecting part 10 at the other end of the joint trough 8 as described above, and also connects the connecting part 5 left at one end. is connected to one connecting portion 4 of the sizing trough 1. In addition, 19
is a mooring hole provided at the bottom of each trough, 2
0 is a reinforcing rib provided at its upper end with a locking portion 21 for engagement with a locking claw of a trough cover (not shown).

(Function) The device configured in this way connects an appropriate number of sizing troughs 1 with connecting parts 4 and 5 provided at both ends of each sizing trough 1, and also connects the sizing troughs 1 alone. If the length cannot be adjusted, a cut trough 16 and a joint trough 8, which are cut from a fixed size trough, are used.
are installed as a plastic trough of a predetermined length by connecting them to the connecting parts of the sizing trough 1 at each connecting part, and cables such as power lines and communication lines are attached inside, and a trough cover (not shown) is installed. This cutting trough 16 is used as a lid, but since the cutting trough 16 is obtained by cutting the easily cut plastic sized trough 1 to the desired length, the trough can be cut to a specified length at the corner or end. If the specified length cannot be obtained by simply connecting the sized troughs 1, the specified length can be achieved by cutting the sized troughs 1 at the installation site and connecting the cut troughs 16 with a joint trough 8 interposed. In particular, the connecting portion 9 of the joint trough 8 is a connecting plate portion 1 extending forward from the inner surface of the side plate portion of the main body portion having the same cross-sectional shape as the sizing trough 1.
5, 15 and a support plate portion 13 extending forward from the outer surface of the bottom plate portion of the main body portion, the cutting trough 16 has its cutting side end surface 17a connected to the abutting end surface 12 of the other end of the joint trough 8. The connecting plate portion 15 of the joint trough 8 is butted against the inner surface of the side plate portion and the outer surface of the bottom plate portion on the cutting side.
15 and the support plate 13 are connected together, so when the end face 17a of the cutting part 17 of the cutting trough 16 is butted against the abutting end face 12 of the connecting part 10, the cutting trough 16 is supported by its bottom plate part 2. Supported by the plate part 13 and both side plate parts 3 of the cutting trough 16,
Since the connecting plate parts 15, 15 are also attached to the inner surface of 3 and are connected in a state in which movement in the vertical and horizontal directions is prevented, a stable connected state can be obtained.

(Effects of the invention) As is clear from the above explanation, the invention has the following effects:
A pair of connecting plates extending forward from the inner surface of the side plate at the other end of the main body portion and having the same cross-sectional shape as the sizing trough connect the sizing trough and a cutting trough obtained by cutting the sizing trough to an appropriate length. By interposing a joint trough in which a special connecting part is formed at one end and a supporting plate part extending forward from the outer surface of the bottom plate part of the main body part is interposed, a trough of any length can be formed with a simple connecting operation. Since it can be installed in a stable condition,
There is no need to prepare sized troughs of various lengths as in the past, and the labor of manufacturing and storage can be saved.

Therefore, the present invention has great practical value as it eliminates the problems of conventional plastic troughs.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof. 1: Sized trough, 4a: Insertion end, 5a: Stepped part, 8: Joint trough, 9: Connecting part, 9a:
Step part, 12: Butting end surface, 13: Support plate part, 15:
Connecting plate portion, 16: cutting trough, 17a: end surface.

Claims (1)

[Scope of utility model registration request] A sizing trough 1 in which a receiving step portion 4a of a size that can fit an insertion end 5a at the other end of the main body is expanded at one end of a main body having a U-shaped cross section; Between the cutting trough 16 cut to a more appropriate length, a receiving step portion 9a having the same shape as the receiving step portion 4a is formed at one end of the main body portion having the same cross-sectional shape as the sizing trough 1, and is formed at the other end. A joint trough 8 in which a connecting portion 9 formed of connecting plate portions 15, 15 extending forward from the inner surface of the side plate portion of the main body portion and a support plate portion 13 extending forward from the outer surface of the bottom plate portion of the main body portion is interposed, and The sizing trough 1 is connected by fitting its insertion end 5a to the receiving step 9a at one end of the joint trough 8, while the cutting trough 16 has its cutting side end surface 17a abutting against the other end of the joint trough 8. The connecting plate portions 15, 15 and the support plate portion 13 of the joint trough 8 are butted against the end surface 12 and on the inner surface of the side plate portion and the outer surface of the bottom plate portion on the cutting side.
A plastic trough characterized by being connected together.