JPH0110536Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a plastic bulkhead duct having two transport passages for gas, liquid, powder, etc.

[Conventional technology] Conventionally, two methods of transporting gas, liquid, powder, etc.
The book transport path was created by partitioning the inside of a duct with a circular cross section with longitudinal partition walls,
Known examples include those described in Publication No. 50-2765.

[Problem to be solved by the invention] By the way, in the above-mentioned conventional method, two passages are formed by welding a partition wall inside a duct with a circular cross section. The work to form the passage is complicated, and especially when the duct is long, it is difficult to weld the partition wall, and this kind of long duct cannot be easily obtained.

Therefore, in the present invention, one joint of a pair of half members is connected with a hinge so that it can be opened and closed, and the other joint is provided with a locking mechanism consisting of a latch that can be opened and closed with a hinge and a locking step. and by forming a stepped portion on the inner wall of the pair of half members that contacts both joint portions, and closing the pair of half members with both walls of the partition wall being sandwiched between the stepped portions. It is an object of the present invention to enable a plastic bulkhead duct having two transport passages to be easily constructed, and to easily provide even a particularly long plastic bulkhead duct of this type.

[Means for Solving the Problems] In order to achieve the object, the present invention is configured as follows.

That is, the structure consists of a pair of half members of a hollow double-walled structure having independently spaced inner and outer walls made of thermoplastic plastic, and a partition wall that partitions the transportation passage formed by the pair of half members into two. One joint of the pair of half members is connected with a hinge so that it can be opened and closed, and the other joint is provided with a locking mechanism consisting of a latch and a locking step that can be opened and closed with the hinge. A plastic partition wall characterized in that the inner wall of the half member is formed with a stepped portion in contact with both joint portions, and the pair of half members are closed together with both ends of the partition wall being sandwiched between the stepped portions. It is a duct.

[Function] Since the plastic partition duct according to the present invention is constructed as described above, in order to construct a plastic duct whose interior is partitioned by a partition wall to form two transportation passages, a pair of halves are required. The partition wall is engaged with the step portion of the inner wall of the body member that is in contact with both joint portions, and the pair of half-body members is closed around the hinge of one joint portion, and the latch of the other joint portion is locked with the step portion. When locked, a plastic duct with the interior partitioned by a partition wall to form two transport passages is constructed.

[Example] Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a plastic partition duct, and the plastic partition duct 1 is composed of a pair of half members 2a and 2b. The pair of half members 2a and 2b are made of a hollow 2 made of thermoplastic such as polyethylene, polypropylene, polystyrene, polyamide, polycarbonate, etc.
It is of heavy-walled construction. Reference numeral 3 denotes a partition wall, which is attached to the joint 4 of the pair of half members 2a, 2b.

One half member 2a has an independently spaced inner wall 5a,
It is composed of an outer wall 6a and has a hollow part 7 between them, and 8 is a weld part where the inner wall 5a and the outer wall 6a are partially joined. The other half member 2b is also configured to have a hollow double wall structure having an inner wall 5b, an outer wall 6b, and a hollow portion 7, and a weld portion 8 is formed in the same manner as the half member 2a. 9a and 9b are openings of the plastic bulkhead duct 1. The pair of half members 2a and 2b are integrally connected at the joint 4 via a bendable hinge 10 made thin by compression, and the other is connected to the locking protrusion 11 of the half member 2a. It is locked by a locking mechanism consisting of a latch 12 on the half member 2b. This latch 12 is connected to the half member 2b via a hinge 10. Further, the inner walls 5a, 5b of the half members 2a, 2b are provided with a partition wall 3 at a stepped portion 13 formed so as to be in contact with the joint portion 4.
are sandwiched between them to form two transportation passages 14a and 14b.

FIG. 3 shows an example of a method of forming the half members 2a, 2b. 15 is a parison extruded from an extrusion head (not shown); 16 and 17 are split molds; one mold 16 has a concave cavity 16a, and the other mold 17 has a convex cavity. 17a is formed. This mold 16,
In order to mold the half members 2a and 2b using the molding material 17, first, a thermoplastic such as polyethylene is melt-kneaded in an extruder and extruded as the parison 15 from an extrusion head. The extruded parison 15 is placed between the molds 16 and 17, and
6,17 will be closed. Next, the pair of half members 2a and 2b are molded by blowing pressure fluid into the parison 15 from the blowing needle 18, and the mold 1 is
The parison 15 is compressed and thinned in the compression part 19 between 6 and 17, and the hinge 10 is formed. Note that the weld portion 8, locking projection 11, latch 12, and step portion 13 are also integrally molded during the blow molding. Next, after cooling the molded products, the molds 16 and 17 are opened, the molded products are taken out, and excess burrs are removed to obtain hollow double-walled plastic half members 2a and 2b. Then, both ends of the partition wall 3, which is constructed separately from a thermoplastic board made of unfoamed or foamed polyethylene, vinyl chloride, polyethylene, polypropylene, etc., plywood, paperboard, etc., are connected to step portions 13.
By closing the half members 2a and 2b in a state where they are sandwiched, and locking the latch 12 to the locking protrusion 11,
A plastic bulkhead duct 1 as shown in FIGS. 1 and 2 is obtained.

4A, B and C each show another example of the plastic bulkhead duct 1. In FIGS. These are examples in which the openings 9a and 9b are opened in different directions. In addition, in both cases, the hinge 10 and the locking protrusion 11 of one joint part 4
The locking mechanism consisting of the latch 12 and the latch 12 is the same as that shown in FIGS. 1 and 2, and is therefore not shown. In what is shown in FIGS. 4A and 4B, reference numerals 20 and 21 are mounting brackets for mounting the plastic bulkhead duct 1 to another wall surface or the like.

In the embodiment configured as described above, the interior is partitioned by a partition wall 3 and two transport passages 1 are provided.
Plastic duct 1 formed with 4a and 14b
To configure this, the partition wall 3 is engaged with the stepped portion 13 of the inner walls 5a, 5b of the pair of half members 2a, 2b, which are in contact with both joints 4, and the inner walls 5a, 5b of the pair of half members 2a, 2b are
is closed around the hinge 10 on one joint surface 4, and the latch 12 on the other joint 4 is closed on the locking step 11.
The interior is partitioned by a partition wall 3 and the 2
The plastic duct 1 in which the book transport passages 14a and 14b are formed can be easily constructed.
Moreover, since the plastic partition duct 1 is constructed as described above, it can be easily constructed even if it is long.

[Effects of the invention] The invention provides a pair of half members of a hollow double-wall structure having independently spaced inner and outer walls made of thermoplastic plastic, and a transportation passage formed by the pair of half members is partitioned into two. Consisting of a partition wall, one joint of a pair of half members is connected with a hinge so that it can be opened and closed, and the other joint is provided with a locking mechanism consisting of a latch that can be opened and closed with a hinge and a locking step. , the inner wall of the pair of half members is formed with a stepped portion in contact with both joint portions, and the pair of half members are closed together with both ends of the partition wall being sandwiched between the stepped portions, Simply engage the partition wall with the stepped portions of the inner walls of the pair of half members that contact both joints, close the pair of half members, and engage the latch with the locking protrusion.
A plastic bulkhead duct having two transport passages can be easily constructed, and even a particularly long plastic duct of this type can be easily constructed.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a plastic bulkhead duct according to the present invention, FIG. 2 is a cross-sectional perspective view of the main parts of the same, FIG. 3 is a cross-sectional view of a mold showing a method of molding a pair of half members, and FIG. Figures A, B and C are overall perspective views showing other embodiments of the present invention. 1...Plastic bulkhead duct, 2a, 2b
... Pair of half members, 3 ... Partition wall, 4 ... Joint surface, 10 ... Hinge, 11 ... Locking protrusion, 12 ...
...Latsuchi, 13...Danbe.

Claims (1)

[Scope of utility model registration request] A pair of half members consisting of a pair of hollow double-walled half members having independently spaced inner and outer walls made of thermoplastic plastic, and a partition wall that partitions a transport passage formed by the pair of half members into two. One joint of the members is connected with a hinge so that it can be opened and closed, and the other joint is provided with a locking mechanism consisting of a latch that can be opened and closed with a hinge and a locking step, and the inner wall of the pair of half members is forms a step that touches both joints,
A plastic partition wall duct characterized in that it is constructed by closing a pair of half members with both ends of the partition wall being sandwiched between the step portions.