JP3021422U - Flexible duct - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To make flexible ducts compact. SOLUTION: Between the heat insulation layer 3 and the inner circumference material 2 of a flexible duct 1 which is provided with a glass wool or other heat insulation layer 3 on the outer circumference of a spiral inner circumference material 2 and an outer skin 4 covering the outer circumference thereof. Then, a plurality of binding wires 5 are sandwiched and attached, and both ends of the binding wire 5 are exposed to the inside of the spiral inner peripheral member 2. The length of the binding wire 5 is substantially equal to the length of the flexible duct 1, and at least one end of the binding wire 5 is temporarily attached to one end of the flexible duct 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention mainly relates to a flexible duct used for air conditioning and ventilation equipment.

[0002]

[Prior art]

 A flexible duct is known in which a glass wool or other heat insulating layer is provided on the outer periphery of an inner peripheral member, and a skin covering the outer periphery is provided.

[0003]

[Problems to be solved by the device]

 When carrying this flexible duct from a factory to a construction site, conventionally, as shown in FIG. 6, the flexible duct a was carried as it was or in a spiral shape in the length direction.

However, this product has a problem in that it cannot stretch and carry many flexible ducts a at the same time. An object of the present invention is to provide a flexible duct which can be assembled into a very small size.

[0005]

[Means for Solving the Problems]

 In order to achieve such an object, the flexible duct according to claim 1 of the present application is a flexible duct including a glass wool or other heat insulating layer on an outer periphery of an inner peripheral material, and an outer cover covering the outer periphery of the flexible duct. A flexible duct according to claim 2 of the present application is characterized in that a plurality of binding wires are sandwiched between the inner peripheral member and the heat insulating layer, and the flexible duct according to claim 2 of the present application is made of glass wool or the like. In a flexible duct having a heat insulating layer and an outer skin that covers the outer periphery of the flexible duct, a plurality of binding wires are attached between the inner peripheral member and the heat insulating layer, and both ends of the inner periphery are attached to the inner periphery. The flexible duct according to claim 1 or 2 is made to face the inside of the material, and the flexible duct is compressed in the lengthwise direction, and the ends of the binding wire are tied together to form a small bundle. To be

The flexible duct according to claim 3 of the present application is the flexible duct according to claim 1 or 2, wherein the length of the binding wire is substantially equal to the length of the flexible duct. At the same time, one end of the binding wire is temporarily attached to one end of the flexible duct, which allows the binding wire to sneak into the heat insulating layer during manufacture of the flexible duct. The problem can be solved and the binding wire can be securely held in place after manufacturing.

[0007]

[Embodiment of device]

 An example of an embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a flexible duct. The flexible duct 1 covers the outer circumference of an inner peripheral member 2 with a heat insulating layer 3 such as glass wool, and the outer circumference of the heat insulating layer 3 is further covered with a skin 4 such as a vinyl film. The ends of the flexible duct 1 are end-treated, and the flexible duct 1 is compressed in its length direction so that its length can be reduced to approximately one fifth. it can. The inner peripheral member 2 is formed by spirally winding a metal wire (piano wire) 2a covered with a film 2b such as aluminum tape or polyester. The flexible duct 1 has a diameter of 10 cm to 60 cm and a length of 30 cm to 10 m.

Between the heat insulating layer 3 and the inner peripheral member 2 of the flexible duct 1, two to five binding wires 5 are arranged at substantially equal intervals in the circumferential direction, and the binding wire 5 of the flexible duct 1 is sandwiched. Mount along the length direction. In this case, if the length of the binding wire 5 is made substantially equal to the length of the flexible duct 1 and both ends of the inner peripheral member 2 are exposed to the inside of the spiral inner peripheral member 2, the inner peripheral member 2 It is not necessary that both ends of the binding wire 5 are caught in the heat insulating layer 3 when the heat insulating layer 3 is attached to the outer periphery of the wire 2.

Then, one end or both ends of the binding wire 5 is temporarily attached to the U-shaped nail A used for the end treatment of the flexible duct 1, and a tape is wound or stuck on the U-shaped nail A. . In this case, the binding wire 5 does not have a problem such as sneaking in between the inner peripheral member 1 and the heat insulating layer 2 during the production of the flexible duct 1, and the binding wire 5 is not produced after the production. Can be reliably kept in place.

The flexible duct 1 is compressed in its length direction to reduce its length to about 1/5, and then the both ends of the binding wire 5 are bound, or both ends are preliminarily attached. By hooking the formed hook portions together, the flexible duct 1 can be compactly assembled. When the flexible duct 1 is used, if both ends of the binding wire 5 are cut into a long length, when the flexible duct 1 returns to the original length, the binding wire 5 is formed as shown in FIG. The wire 5 is placed between the heat insulating layer 3 and the inner peripheral member 2. Therefore, the binding wire 5 does not interfere with the use of the flexible duct 1.

[0011]

[Effect of device]

 In the flexible duct according to claims 1 and 2 of the present application, if the flexible wire is pressed and contracted in the lengthwise direction and both ends of the binding wire are tied, the flexible duct is compacted and easily carried. By cutting both ends of the wire, the binding wire fits between the heat insulating layer and the inner peripheral material, and other problems such as the binding wire obstructing the air flow during use of the flexible duct are also avoided. Absent. When both ends of the binding wire are exposed to the inside of the spiral inner peripheral member, the binding wire is attached to the inside of the spiral inner peripheral member. Since the flexible duct can be bounded with, the wire for bundling does not damage the heat insulating layer or outer skin.

In the flexible duct according to claim 3 of the present application, further, it is possible to eliminate problems such as the binding wire slipping into the inner peripheral material during the production of the flexible duct, and after the production. Can surely keep the binding wire at a predetermined position without any trouble such as displacement of the binding wire.

[Brief description of drawings]

FIG. 1 is a cutaway side view showing an embodiment of the present invention.

FIG. 2 is a side view of a portion of FIG.

FIG. 3 is a cutaway side view of FIG.

FIG. 4 is a side view showing a state in which the flexible duct of the present invention is assembled.

FIG. 5 is a cutaway side view of a state in which the binding by the binding wire is released.

FIG. 6 is a perspective view showing a state in which flexible ducts of a conventional example are put together.

[Explanation of symbols]

1 Flexible Duct 2 Inner Circumference Material 3 Heat Insulation Layer 4 Outer Skin 5 Binding Wire

Claims (3)

[Scope of utility model registration request] 1. A flexible duct having a heat insulating layer of glass wool or the like on the outer periphery of an inner peripheral member, and an outer skin covering the outer periphery of the inner peripheral member, wherein a plurality of insulating layers are provided between the inner peripheral member and the heat insulating layer. A flexible duct characterized in that it is attached by sandwiching a binding wire. 2. A flexible duct having a heat insulating layer of glass wool or the like on the outer periphery of an inner peripheral member and an outer cover covering the outer periphery of the inner peripheral member, wherein a plurality of binding members are provided between the inner peripheral member and the heat insulating layer. A flexible duct, characterized in that it is attached with a wire being sandwiched, and both ends thereof are exposed to the inside of the inner peripheral member. 3. The length of the binding wire is substantially equal to the length of the flexible duct, and at least one end of the binding wire is temporarily attached to one end of the flexible duct. Item 3. The flexible duct according to item 1 or 2.