JPH1140323A - Antifreezer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate length adjustment, and prevent adhesion from being decreased and stress from being applied in winding and fitting work by plane- forming a plurality of heating wires with elasticity side by side, which are bent to be a wave form, and forming expandably contractibly with the heating wires jointed to each other. SOLUTION: A heating wire with elasticity is obtained by winding a nichrome wire around a core material made of glass fiber or the like, and coating its circumference with an envelope, such as vinyl chloride. This heating wire 56 is bent into a wave form, such as a sinewave. By folding the bent heating wire 56 three times at its halfway part, the first reciprocating parts 56a, 56b and the second reciprocating parts 56c, 56d are formed, and by separating them from each other, they are plane-formed in parallel in the identical direction. At the most adjacent bent part, the heating wires are jointed to each other by a joint material 12 with flexibility, made of synthetic resin or the like, so as to be a mesh body as a whole. By jointing the folded part A and the folding start and finish portions of the heating wire 56 integrally with jointing members 14, 16 made of synthetic resin, and connecting a power supply cord 60, it is possible to obtain an antifreezer 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antifreezing device used for water pipes and the like.

[0002]

2. Description of the Related Art In winter, water pipes may freeze, and as a preventive measure, water pipes are prevented from freezing by warming a belt-shaped antifreeze device along the water pipes. . As shown in FIG. 14, a conventional anti-freezing device 50 has a core 52 made of glass fiber or polyester fiber.
A heating wire 56 formed by winding a nichrome wire 54 is covered with a jacket 58 such as vinyl chloride.

In this example, the heating wire 56 is folded back at an intermediate portion, and a forward portion 56a and a return portion 56b sandwiching the folded portion.
Are spaced apart from each other and are coated in a state of being parallel to each other to form a flat shape as a whole. In addition, the anti-freezing device 50
Outgoing part 5 to make
The coating between 6a and the return portion 56b is formed thinner than the portion that covers the heating wire 56. And this heating wire 5
The power cord 6 is provided at the start and end points of the nichrome wire 54 of FIG.
0 and the power cord 60 is connected to an outlet, so that the heating wire 56 (specifically, the nichrome wire 5
4) An electric current flows to generate heat and prevent freezing of a structure such as a water pipe to which the freeze protector 50 is attached. In order to prevent the heating wire 56 from being overheated, a temperature controller 62 composed of a thermistor having a positive temperature characteristic or the like is covered in a state connected in series with the heating wire 56.

When the strip-shaped anti-freezing device 50 is attached to a water pipe 64 as an example, as shown in FIG. 15, it extends along the outer surface of the water pipe 64 along its longitudinal direction (vertical direction in FIG. 15). And fixing means 66 such as vinyl tape
It is common to use a method of fixing with a screw or a spiral winding (not shown). In an area where cold is severe, the water pipe 64 provided with the deicer 50 may be connected to the deicer 50.
It may be further covered with a heat insulating material or the like from above.

[0005]

However, the above-mentioned conventional anti-freezing device has the following problems. Normally, the length L of the freeze protector is set in advance, and even if a device having a different length L is prepared, there are many types. On the other hand, the length M of the mounting portion of a structure such as a water pipe to which the freeze protector is to be mounted varies. For this reason, it is rare that the length L of the anti-freezing device exactly matches the length M of the mounting portion of the structure, and usually, the length L is insufficient or insufficient. At this time, in the case where the anti-freezing device is wound around the structure, the anti-freezing device having a length L (> M) can be prepared, and the anti-freezing device can be adjusted and mounted by appropriately changing the winding pitch, as shown in FIG. In the case where the anti-freezing device is attached along the longitudinal direction of the structure, there is a problem that a portion where the anti-freezing device cannot be attached occurs when the structure is insufficient. In addition, when it is surplus, it is folded and attached, but there is a problem that the folded portion is overheated and is dangerous.

[0006] In the case of winding and mounting, adjustment is possible, but the on / off operation of the current causes the antifreeze itself to slightly expand and contract. When the structure is extended, the winding force is reduced and a gap is formed between the structure and the mounting portion of the structure. As a result, the structure cannot be heated efficiently. There is a problem that it cannot be heated uniformly because it falls. In addition, when the length is reduced, the force for tightening the structure increases more than when the structure is attached, and there is a problem that a load (stress) is applied to the heating wire, which is not preferable.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to be able to easily adjust the length by being formed to be stretchable and to turn on a current when it is wound around a structure.・ Even if you expand and contract by turning off,
An object of the present invention is to provide an antifreezing device that does not reduce the adhesion to a structure or apply stress.

[0008]

In order to achieve the above-mentioned object, according to the present invention, there is provided a freeze protector according to the first aspect of the present invention, wherein a plurality of elastic heating wires having a wave-like bent elasticity are arranged in a plane. And the heating wires are connected to each other. In the present invention, the freeze protector according to claim 2 is
It is characterized in that a plurality of elastic heating wires bent in a waveform are arranged side by side while intersecting in a plane, and the heating wires are connected at an intersection. According to these, by connecting the heating wires to each other, it is possible to realize an anti-freezing device that can expand and contract in the longitudinal direction and the juxtaposition direction of the heating wires, and to adjust the length and width of structures having different lengths and widths. It can be easily attached while doing. Also, even if the freeze protector itself expands and contracts due to turning on and off the current to the heating wire, the expansion and contraction of the freeze protector itself can be absorbed by installing the freeze protector in a stretched state in advance. Even when the protector is extended, no gap is created between the freeze protector and the mounting site. Therefore, the adhesion of the anti-freezing device is maintained, and efficient heating can be performed. Also, stress is less likely to be applied to the heating wire.

According to a third aspect of the present invention, there is provided the freeze protector according to the third aspect of the present invention, wherein a flexible heating wire bent in a waveform is formed on a stretchable planar body along the stretching direction of the planar body. And are integrally attached. According to these, since the planar body further has elasticity, if the heating wire itself has flexibility even if it does not have elasticity, it is possible to realize an antifreezing device that can expand and contract in the longitudinal direction of the heating wire.

[0010] As the planar body, a rubber material, a foam or a non-woven fabric can be used. Further, it is also possible to form the planar body in a net shape using a synthetic resin material. In this case, it is also possible to form a net formed by overlapping circular, elliptical or rhombic shapes. In addition, the planar body has a configuration in which steps are repeatedly provided and has elasticity along a direction in which the steps are arranged, and the heating wire is fixed at the top of the step at an intermediate portion between adjacent bent portions. With this configuration, it is possible to realize an anti-freezing device having elasticity along the longitudinal direction of the heating wire.

According to another aspect of the present invention, there is provided an anti-freezing device having two elastic power sources which are bent in a waveform, are juxtaposed in a plane, and are connected to adjacent bent portions. For the lead wire, the forward part and the return part formed by folding back in the middle part are arranged side by side and the bent parts where the forward part and the return part approach each other are connected by a connecting material, and on the power supply lead wire An elastic heating wire arranged and attached in the same direction as the power supply lead wire, arranged on one end side of the power supply lead wire, one end of the power supply lead wire and both ends of the heating wire A first end connecting member which is integrally connected and has a power supply cord for supplying power to the heating wire and the power supply lead wire, which is disposed on the other end side of the power supply lead wire; The end of the wire and the folded part of the heating wire A first auxiliary anti-freezing device having a first connector to be connected, and two power supply leads having elasticity, which are bent in a corrugated form, are arranged side by side in a plane, and are connected to adjacent bent portions thereof; The forward portion and the return portion formed by folding back in the middle portion are arranged side by side in a plane, and the bent portions approaching the forward portion and the return portion are connected by a connecting material,
An elastic heating wire, which is mounted on the power supply lead wire in the same direction as the power supply lead wire, is disposed on one end side of the power supply lead wire, and has one end of the power supply lead wire and heat generation The two ends of the wire are integrally connected and connectable to the first connector. When connected to the first connector, a second power source for supplying power to the heating wire and the power supply lead wire is provided.
A third connector disposed on the other end side of the connector and the power supply lead wire and having the same structure as the first connector and integrally connecting the other end of the power supply lead wire and the folded portion of the heating wire; And a second auxiliary anti-freezing device having: According to this, by changing the number of the second sub-freeze protectors connected to the first sub-freeze protector, a freeze protector of an arbitrary length can be easily assembled even at the work site, which is convenient.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a freeze protector according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, as an example, an example in which an antifreeze device is used for a water pipe will be described. However, the present invention can be naturally applied to various structures such as walls, floors, ceilings, and the like that need to be heated by electric heat. is there. (First Embodiment) First, the configuration of the freeze protector 10 will be described with reference to FIG. In the basic structure, a plurality of elastic heating wires bent in a waveform are arranged side by side in a plane, and the heating wires are connected to each other. In the present embodiment, one heating wire 56 having elasticity is bent into a waveform, and is folded once or more at an intermediate portion to form one or more forward portions and return portions, and these forward portions and return portions are formed. Are arranged side by side in a plane. Then, by treating each of the forward portion and the return portion as an individual heating wire, a plurality of heating wires are arranged in a plane and connected to each other. As described in the conventional example, the specific structure of the heating wire 56 is to wind the nichrome wire 54 around the core member 52 made of glass fiber or polyester fiber, and to cover the periphery thereof with a jacket 58 such as vinyl chloride. It is the structure which did. Further, the waveform includes a sine wave, a wave close to a sine wave constituted by a curve such as an arc shown in FIG. 1, and also includes a wave shape constituted by a triangle, a trapezoid, and a rectangle. .

The heating wire 56 is folded back in the middle, and the first forward portion 56a and the first backward portion 56b, the first backward portion 56b and the second forward portion 56c, and the second forward portion 5 sandwiching the folded portion A are sandwiched.
6c and the second return portion 56d are spaced apart from each other and are arranged side by side in the same direction. The heating wire 56 is formed between the bent portions of the first forward portion 56a and the first return portion 56b which approach each other,
The bent portions approaching the first return portion 56b and the second outward portion 56c and the bent portions approaching the second outward portion 56c and the second return portion 56d are made of a flexible material (such as a synthetic resin material). It is connected by the formed connecting member 12 and is formed in a net-like body as a whole. The number of times of folding is three in the present embodiment, but the antifreezing device 10 may be constituted by only the first forward part 56a and the first return part 56b as one time, or two or four times. The width of the antifreeze device 10 can be set to an appropriate size by increasing or decreasing the number of times of folding back, such as five times.

The starting point of the heating wire 56, the folded portion A and the end point of the heating wire 56 are integrally connected by the first end connecting member 14 formed of a synthetic resin material. A power cord 60 is connected to the end point. The remaining folded portions A of the heating wires 56 are also integrally connected by a second end connecting member 16 made of a synthetic resin material. Note that a temperature controller such as a thermistor for preventing overheating of the heating wire 56 may be provided inside the first end connecting member 14 to which the power cord 60 is connected as in the conventional example.

The anti-freezing device 10 having the above-described configuration includes the first forward portion 5
6a, the first end connecting member 14 and the second
When a force for separating the end connecting member 16 is applied, the first forward portion 56a, the first backward portion 56b, the second forward portion 56a, and the second backward portion 56b are deformed in a direction in which the amplitude of each waveform decreases. And extends along the longitudinal direction X. When the stretching force is released, the amplitude of the original waveform returns to the original amplitude due to the elastic restoring force of each of the first forward portion 56a, the first backward portion 56b, the second forward portion 56a, and the second backward portion 56b. Vessel 10
Shrinks to its original length. In this way, the anti-freezing device 10 has elasticity along the longitudinal direction X. It should be noted that when extended, the amplitudes of the first forward portion 56a, the first backward portion 56b, the second forward portion 56a, and the second backward portion 56b decrease,
The length (corresponding to the width of the antifreeze device 10) of the antifreeze device 10 along the juxtaposition direction Y such as the first forward portion 56a is reduced.

On the other hand, when a force in the juxtaposition direction Y is applied to both ends of the intermediate portion of the freeze protector 10, the first forward portion 56a, the first backward portion 56b, the second forward portion 56a, and the second backward portion 56b are caused. This time, since the waveforms are deformed so that the amplitudes of the respective waveforms increase, the antifreezing device 10 can also extend in the so-called width direction. When the stretching force is released, the original waveform is formed by the elastic restoring force of each of the first forward portion 56a, the first backward portion 56b, the second forward portion 56a, and the second backward portion 56b as in the case of the longitudinal direction X. Return. In this way, the anti-freezing device 10 also has elasticity along the juxtaposition direction Y.
As a result, the anti-freezing device 10 can expand and contract in all directions, such as being able to expand and contract in an oblique direction as a whole, and can be bent in the same plane as a whole.

As described above, since the deicer 10 has elasticity, even if the length of the deicer 10 is shorter than the length of the mounting portion of the deicer 10 in a structure such as a water pipe, the deicer is prevented. By pulling and extending the device 10, the antifreeze device 10 can be easily mounted without any excess or shortage so as to reach the entire mounting site. In addition, even when the mounting portion has a convex portion, since the anti-freezing device 10 has elasticity in all directions as described above, the anti-freezing device 10 can be mounted so as to be in close contact with the entire surface including the convex portion of the mounting portion, Efficient heating becomes possible. In addition, even when it is wound around a water pipe, it can be wound while being slightly stretched, and the anti-freezing device 10 itself tightens the water pipe by its own lengthening force. Workability is improved. Further, even if the anti-freezing device 10 is slightly expanded or contracted due to a temperature change due to on / off of the current to the heating wire 56 of the anti-freezing device 10, the anti-freezing device 10 is wound while being slightly stretched in advance. The amount of expansion and contraction can be absorbed.
Even when the entire length of the water pipe is extended, the winding force on the water pipe is not lost, and no trouble such as slipping off from the water pipe occurs. Further, even when the freeze protector 10 is entirely contracted, the heating wire 56 is bent in advance into a waveform, so that the width of the waveform only slightly changes within this range, and the heating wire 56 is linearly arranged as in the related art. Very little stress is applied compared to when

(Second Embodiment) First, an antifreezing device 2
0 will be described with reference to FIG. A plurality of heating wires 56 having elasticity bent in a waveform are arranged in parallel in a plane,
The basic structure of connecting the adjacent heating wires 56 is similar to that of the above-described antifreeze device 10 of the first embodiment, but the antifreeze device 20 of the present embodiment is different in the connection structure. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description will be omitted. The heat generating wire 56 is formed by folding back at an intermediate portion, and the first forward portion 56a, the first return portion 56b, the second forward portion 56c, and the second forward portion 56a are arranged in parallel with the folded portion A therebetween.
And a return portion 56d. The connecting structure is such that the first outward portion 56a and the first return portion 56b approach each other, the first return portion 56b and the second outward portion 56c approach each other, and the second outward portion 56c and the second outward portion 56c approach each other. The two return sections 56d are arranged side by side so that the approaching bent sections cross each other, and each intersection B
, The first going part 56a, the first returning part 56b, and the second going part 5
6c and the second return portion 56d are connected by means such as fusion, adhesion, or binding, and the heating wire 56 is formed in a net-like body as a whole.

With the above-described configuration, the antifreeze device 20 of the present embodiment also has the heating wire 56 formed in a mesh like the antifreeze device 10 of the first embodiment. It has elasticity along the longitudinal direction X such as 56a, and also has elasticity along the parallel direction Y such as the first forward portion 56a.
Therefore, the anti-freezing device 20 of the present embodiment can also be adjusted in length while being stretched when attached to a structure such as a water pipe, and even when it is wrapped around a water pipe or the like,
Since winding can be performed while being slightly stretched, winding workability is improved. Further, even if the antifreeze device 20 expands and contracts due to a temperature change due to turning on and off the current, the antifreeze device 20 itself has elasticity and can absorb the expansion and contraction due to the temperature change. Operation similar to the form of
It works.

(Third Embodiment) First, the deicer 2
2 will be described with reference to FIG. The same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof will be omitted. The basic configuration of the freeze protector 22 of the present embodiment is such that a flexible heating wire 56 that is bent in a waveform is formed on a planar body 24 made of a stretchable material.
In such a manner as to extend along the direction of expansion and contraction of the sheet-like body 24, that is, the heating wire 56 is integrally attached so that the longitudinal direction X thereof is the same as the direction of expansion and contraction.

Next, the configuration of the heating wire 56 and the configuration of the sheet 24 will be described. The heating wire 56 has a configuration basically similar to that of the first embodiment. That is, the heating wire 56 is folded back at an intermediate portion (in the present embodiment, as an example, once), and the first forward portion 5 sandwiching the folded portion A is formed.
6a and the first return portion 56b are spaced apart from each other and are arranged side by side in a plane along the same direction. The heating wire 56 is the first
The approaching bent portions of the forward portion 56a and the first return portion 56b are connected by the connecting member 12, so that the first forward portion 56a and the first return portion 56b do not intersect when the deicer 22 is extended. .

The sheet 24 has a heating wire 56 on one surface thereof.
Are bonded or fused and attached, or the heating wire 56
Are attached by integral molding, and are bridged between the first end connecting member 14 and the second end connecting member 16 to support the heating wire 56. The longitudinal direction X of the first forward portion 56a and the like is provided. The two end portions along the first end connecting member 14 and the second end connecting member 1
6. Further, the sheet-like body 24 has at least a longitudinal direction X of the heating wire 56 with the heating wire 56 attached thereto.
It is necessary to have elasticity along. For this reason, in the present embodiment, as shown in FIG. 3, the planar body 24 is configured by continuously connecting a plurality of synthetic resin-made components 24a formed in a diamond shape. With this configuration, when a force is applied along the longitudinal direction X of the sheet body 24, the sheet member 24a
Can be narrowed and extended, and when the force is released, it can return to its original shape by its own restoring force. The shape of the component member 24a may be a circle, a tortoise shell, or an ellipse instead of a rhombus as long as the shape can expand and contract.
Or a combination of these. And since the sheet body 24 has elasticity based on the shape of the component member 24a itself, it is preferable that the material itself of the sheet body 24 has elasticity. Any material may be used as long as it has flexibility. For example, foamed materials such as elastic rubber materials and sponges may be used, as well as vinyl chloride, silicone resin, and the like having low elasticity. The number of the component members 24a is the same as the number of the connecting members 12 that connect the adjacent bent portions of the first forward portion 56a and the first return portion 56b of the heating wire 56. Further, a portion having a shape that bends in a waveform like the heating wire 56 along the back surface of the heating wire 56 shown in FIG. In this case, since the sheet-like body 24 and the heating wire 56 are not connected at the intersection but connected by a line, the strength and durability of the antifreezing device 22 are improved.

As shown in FIG. 3, the method of attaching the heating wire 56 to the planar body 24 is as follows.
Each of the adjacent bent portions of the first and second return portions 56b is located inside each of the constituent members 24a constituting the planar body 24, and the other of each of the first forward portion 56a and the first return portion 56b. The heating wires 56 are arranged on the planar body 24 so that the bent portions are located outside the respective constituent members 24a. As a result, the intermediate portion between the adjacent bent portions of the first forward portion 56a is
4a, and an intermediate portion between adjacent bent portions of the first return portion 56b also intersects the component 24a. Then, these intersections are fixed by bonding or the like. As a result, the heating wire 56 and the net-like planar body 24 are entirely formed in a new net-like body. As a result, when the freeze protector 22 is pulled in the longitudinal direction X, as shown in FIG. Component 24
It can extend simultaneously following the deformation of a. Then, when the pulling force is released, the heat generating wire 56 together with the sheet 24 returns to the original form shown in FIG. 3 due to the elastic restoring force of the sheet 24. Therefore, the freeze protector 22 having elasticity can be realized.

In order to increase the width of the freeze protector 22, as shown in FIG. 6, the number of turns of the heating wire 56 is further increased, and the sheet body 24 is moved in the direction Y in which the heating wire 56 is juxtaposed.
And one or more (one as an example) is added and juxtaposed,
Adjacent bent portions of each component member 24a constituting each planar member 24 may be newly connected with the auxiliary connecting member 12a. Further, the adjacent bent portions of the heating wire 56 and the adjacent bent portions of the first return portion 56b and the second forward portion 56c in FIG. 6 may be further connected by the sub-connecting material 12b, thereby freezing. The degree of connection of the preventer 22 as a mesh body is further increased, and the elasticity is improved. In order to make the width of the anti-freezing device arbitrarily wide at the installation site, FIG.
In the anti-freezing device 30 shown in FIG. 1, one end of the heat generating wire 56 of each of the first end connecting member 14, the second end connecting member 16 and the component member 24a of the sheet body 24 in the juxtaposition direction Y (FIG. 7 is provided with an engaging portion (an engaging ring as an example) 26, and the other end (the right side in FIG. 7) is an engaged portion (an example) that engages with the engaging portion 26. A T-shaped engagement piece 28 which is inserted into and engaged with the engagement ring 26 is provided.

According to this, another anti-freezing device 30 is provided on the engaging portion 26 side of one anti-freezing device 30, and the engaged portion 28 is on the engaging portion 26 side of one anti-freezing device 30. The width of the antifreeze device 30 can be easily doubled by arranging the engagement portions 26 and the engaged portions 28 in such a manner. Further, by repeating this, a wider antifreeze device 30 can also be easily manufactured.
In addition, as shown in FIG. 7, the engaged part 28 provided on the first end connecting member 14 and the second end connecting member 16 has a shape in which a plurality of T-shaped bodies are connected, so that the anti-freezing device 30 is provided. The to-be-engaged portion 28 is wound around a structure such as a water pipe to which the water-removal device is attached, and is engaged with the engaging portion 26, so that the anti-freezing device 30 can be used as a fixing means to the structure. The engaging portion 26 and the engaged portion 28 only need to be able to removably engage with each other, and both may be formed in a hook shape, or may be formed of various known structures such as a hook structure and a hook-and-loop fastener structure. A structure may be employed.

(Fourth Embodiment) First, the deicer 3
2 will be described with reference to FIG. The basic configuration of the freeze protector 32 of the present embodiment is the same as the freeze protectors 22 and 30 of the third embodiment, and the same components are denoted by the same reference numerals and detailed description. Is omitted. The basic configuration is such that a flexible heating wire 56 bent in a wave shape is formed on a stretchable planar body 24 along the direction in which the planar body 24 expands and contracts, in other words, the heating wire 56 is extended along its length. That is, they are integrally mounted so that the direction X is the same as the direction of expansion and contraction.

The third embodiment differs from the third embodiment in the structure of the planar body 24. Note that the configuration of the heating wire 56 is the same, and is formed by bending into a waveform. A description will be given of a different configuration of the planar body 24. In the third embodiment, the planar body 24 is formed of a rhombus or the like so that the planar body 24 can be used even if the material itself does not have elasticity. Although the component members 24a each having a shape are connected to each other, and the component members 24a are provided with elasticity by deformation, the planar body 24 in the present embodiment uses a material having elasticity. , In that the component 24a is not used. Since the planar body 24 itself is made of a rubber material or a foam having elasticity such as a sponge, the planar body 24 can be formed in a rectangular plate shape that is not a net shape, and the heating wire 56 bent in a waveform is It is bonded and fused to one surface. The planar body 24 may be integrally molded and attached. With this configuration, as in the third embodiment, even if the heating wire 56 itself does not have a stretching force, the anti-freezing device 32 can be moved in the longitudinal direction X and in the oblique direction by the elastic stretching force of the planar body 24. It is also possible to expand and contract.

The heating wire 5 in each of the above-described embodiments is used.
6 except that the heating wires 56 are overlapped and connected like the freeze protector 20 of FIG. 2, each forward part and the backward part are adjacent to each other so that the ranges of the respective amplitudes C do not overlap. Although the phases of the waveforms of the forward part and the backward part are shifted side by side by, for example, 180 degrees, the ranges of the amplitude C of the forward part 56a and the backward part 56b are overlapped as in the freeze protector 34 shown in FIG. The waveforms may be bent and arranged side by side so as to have the same phase, and may be attached to the planar body 24. With this configuration, the density of the heating wires 56 is increased, which is suitable for concentrated heating. In addition, a knit material having elasticity may be used for the planar body 24 instead of the rubber material.

In another embodiment of the planar body 24, a step 36 is repeatedly applied to the planar body 24 as shown in FIG. In the present embodiment, as an example, a step 36 in which the cross-sectional shape of the planar body 24 along the longitudinal direction X is a sine wave shape is provided. Thereby, even if the sheet body 24 is made of a synthetic resin material having no elasticity such as a rubber material, the synthetic resin material itself has a restoring force to the initial shape of the step 36, The sheet-like body 24 has elasticity along the direction X in which the steps 36 are arranged (to be coincident with the longitudinal direction of the heating wire 56 as described later). Then, a flexible heating wire 56 bent in a waveform is applied to one surface of the sheet body 24 along the direction X in which the steps 36 are arranged. They are arranged so as to be in contact with each other, and the contact portions are fixed by bonding, fusion or the like. Also in this configuration, it is possible to realize an antifreezing device that can be extended and contracted along the longitudinal direction of the heating wire 56 (the same as the direction X in which the steps 36 are arranged).

The antifreezing devices 10 to 3 of the above embodiments are described.
FIG. 11 shows a state in which 4 is attached to a water pipe 64 which is an example of a structure. As an example, a case where the antifreezing device 10 is used is shown, but the same applies to other antifreezing devices. This mounting method is performed along the longitudinal direction of the water pipe 64.
First, the freeze protector 10 having a length shorter than the length of the installation portion of the water pipe 64 is selected. Subsequently, the second end connecting member 16 of the anti-freezing device 10 is fixed to a position of a freezing depth (a depth at which soil does not freeze in winter) by a fixing means 66 such as a vinyl tape. Next, the user holds the first end connecting member 14 to which the power cord 60 is attached, and adjusts the length of the cryoprotector 10 to the length of the attachment portion while pulling the cryoprotector 10 so as to extend along the outer periphery of the water pipe 64. Then, the vicinity of the first end connecting member 14 is fixed by the fixing means 66. Finally, the fixing device 66 is fixed at several places in the middle of the anti-freezing device 10. Thereby, the antifreezing device 10 can be installed in the installation part of the water pipe 64 without excess or shortage.

(Fifth Embodiment) The anti-freezing device of each of the above-described embodiments is formed to be extensible in the longitudinal direction X of the heating wire 56, that is, the anti-freezing device, and can be adjusted in length. Although it has a configuration, it may not be possible to cover the extent of extension of one cryoprotector depending on the mounting part of the cryoprotector, and it is very convenient if a longer cryoprotector can be arbitrarily connected and assembled on site. is there. In order to achieve this object, as shown in FIG. 12, two sub-freeze preventers having the following configuration may be combined and used as one freeze protector 48.

First, the basic configuration of one sub-freeze preventer (first sub-freeze preventer) 40 is that two elastic power supply leads (hereinafter simply referred to as lead wires) 46 which are bent into a waveform are formed in a plane. And the insulating jackets of the adjacent bent portions are connected to each other. On the lead wire 46, a forward portion 56a and a return portion 56b formed by folding back at an intermediate portion of the elastic heating wire 56 bent in a waveform are arranged side by side in a plane, and each of the above-described embodiments is described. In the same manner as described above, the approaching bent portions of the forward portion 56a and the return portion 56b are connected by the connecting member 12. The intermediate portion D between the adjacent bent portions of the one lead wire 46 has the forward portion 56 disposed above the intermediate portion D.
a or the intermediate portion D between the adjacent bent portions of the return portion 56b is positioned so as to coincide with the intermediate portion D, and the intermediate portions D are connected to each other by means such as adhesion to form a net-like body as a whole. Further, as shown in FIG.
The bending cycle of the waveform No. 6 is set to be the same.

The forward portion 5 of the lead wire 46 and the heating wire 56
A first end connecting member 14 and a second end connecting member 16 formed as a first connector are attached to both ends in the longitudinal direction X of the 6a and the return portion 56b. Specifically, the first end connecting member 14 is connected to one of the lead wires 46 (upper in FIG. 12).
, One end (upper end) of each lead wire 46 and both ends of the heating wire 56 are integrally connected, and a power cord 60 is attached, and the heating wire 56 and the lead wire 46 are internally connected to each other. It is connected to supply power (commercial power supply voltage: 100 V or the like) to both the heating wire 56 and the lead wire 46.
The first connector 16 is disposed on the other (lower in FIG. 12) end of each of the lead wires 46, and integrates the other (lower) end of each of the lead wires 46 with the folded portion of the heating wire 56. Connect to Further, the first connector 16 is provided with a pair of socket terminals 38, and each lead wire 46 is internally provided.
Are connected to the pair of socket terminals 38.

Next, the other sub-freeze protector (second sub-freeze protector) 42 has the same basic structure as the first freeze protector 40, such as the configuration of the lead wire 46 and the heating wire 56. A second connector 14a and a third connector 16a are attached to both ends of the lead wire 46, the forward portion 56a and the return portion 56b of the heating wire 56 in the longitudinal direction X. Specifically, the second connector 14a is connected to one of the lead wires 46 (upper in FIG. 12).
And one end (upper end) of each lead wire 46 and both ends of the heating wire 56 are integrally connected. It has a pair of plug terminals 43 connectable to a pair of socket terminals 38 and is connectable to the first connector 16.
When connected to the connector 16, power is supplied to both ends of the heating wire 56 and each lead wire 46. The third connector 16a has the same structure as the first connector 16. That is, the other end (lower side in FIG. 12) of each lead wire 46 is disposed on the other end side (lower side in FIG. 12).
And the folded portion of the heating wire 56 are integrally connected, and have a pair of socket terminals 38 so as to be connectable to the second connector 14a.

Next, the terminal connector 44 has a plug terminal 43 as an example, and has a function of connecting to the first connector 16 or the third connector 16a to prevent water from entering from the socket terminal 38. That is, it functions as a waterproof cap. Since the terminal connector 44 is not always necessary, the terminal connector 44 may be properly used according to the environment of the place where the freeze protector is installed. Even if the terminal connector 44 does not have the plug terminal 43, the terminal connector 44 may naturally have a cap structure detachable from the first connector 16 or the third connector 16a so as to cover the exposed surface of the socket terminal 38.

The first sub-freezing preventer 40 and the second
If the auxiliary freeze prevention device 42 and the terminal connector 44 are used, the first
Zero or one or more second sub-freeze preventers 42 are connected to the sub-freeze preventer 40 at the site in accordance with the length of the mounting site, and the first connector 1 of the first sub-freeze preventer 40
6 or the third connector 16a of the second auxiliary freeze protector 42
By attaching the terminal connector 44 to the terminal, the entire length of the freeze protector 48 can be arbitrarily set, which is convenient. Further, there is no change in that the anti-freezing device 48 thus connected and configured as a whole can expand and contract in the longitudinal direction X. The heating wires 56 in the first sub-freezing preventer 40 and the second sub-freezing preventer 42 have a circuit configuration as shown in the circuit diagram of FIG. Because it is connected in parallel to the power supply (100V) line, the first
The heating value of each heating wire 56 in the sub-freezing prevention device 40 and the second sub-freezing prevention device 42 becomes the same.

Further, the construction in which the anti-freezing device 48 can be easily connected at the site to have an arbitrary length is not necessarily required. As shown in FIG. 13, the present invention is not limited to the antifreeze devices 40 and 42 which can be expanded and contracted, and can be applied to the antifreeze device 50 having the configuration described in the conventional example.
In this case as well, similarly, the two types of first sub-freeze protectors 50a and the second sub-freeze protectors 50a and the second sub-freeze preventer 42 having the same circuit configuration (FIG. 14B) as the first sub-freeze protector 40 and the second sub-freeze protector 42 described above. This can be realized by preparing the anti-freezing device 50b and, if necessary, the terminal connector 44. The same reference numerals are given to the same configurations as the first sub-freezing prevention device 40 and the second sub-freezing prevention device 42,
Description is omitted.

The structure of the first sub-freeze preventer 50a is the same as that of the first freeze protector 40 except that the forward portion 56a and the return portion 5
6b is changed from a corrugated shape to a linear shape.
Similarly, they are formed in a linear shape and are arranged in a plane so as to be parallel to each other.
8 and is integrally formed, and the other configuration is the same as that of the first sub freeze prevention device 40. FIG.
See (a), (c). In addition, the configuration of the second sub-freezing preventer 50b is such that the forward portion 56a and the return portion 56b of the heating wire 56 in the second sub-freezing preventer 42 have a linear shape from a waveform,
Similarly, the lead wires 46 are similarly formed in a linear shape and are arranged in a plane so as to be parallel to each other, and the periphery thereof is integrally formed by covering with a jacket 58 such as vinyl chloride. Is the same as that of the second sub freeze prevention device 42. See FIGS. 14A and 14C. With this configuration, the length of the second auxiliary freeze protector 50b can be set to an arbitrary length by increasing or decreasing the number of the second sub-freeze protectors 50b even in the same freeze protector as the conventional example in which the heating wires 56 are linearly arranged. However, it can be easily performed even in the field, which is very convenient.

As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the present invention. Of course.

[0040]

According to the first or second aspect of the present invention, an antifreezing device which can be extended and contracted in the longitudinal direction or the juxtaposed direction of the heating wires by connecting the heating wires with elasticity. A vessel can be realized and can be easily attached to structures having different lengths and widths while adjusting the length and width. In addition, even if the anti-icing device expands and contracts due to temperature due to the turning on and off of the current, it can be stretched and attached in advance, so that the elongation due to temperature can be absorbed and the anti-icing device does not loosen as in the past. Adhesion with the surface of the mounting portion of the structure is maintained. Therefore, efficient heating can be performed. In addition, since the heating wire can expand and contract, stress is less likely to be applied to the heating wire itself. Further, even when there are convex portions on the surface of the structure, it is possible to deform and adhere to the shape of the convex portion, and a gap is hardly generated between the structure and the peripheral surface of the convex portion. This has an effect that the heating of satisfactorily can be performed. In addition, when the antifreezing device according to claims 3 to 7 is used, in addition to the above-described effects, the planar body has elasticity and elasticity, so that the heating wire itself has flexibility even without elasticity. If it has, it is possible to realize an antifreezing device that can be extended and contracted in the longitudinal direction of the heating wire, and it is possible to use the heating wire having various structures. Further, when the freeze protector according to claim 8 is used, by changing the number of the second sub-freeze protectors connected to the first sub-freeze protector, an antifreeze of an arbitrary length can be provided at the work site. Can be easily assembled and is convenient.

[Brief description of the drawings]

FIG. 1 is an explanatory view, viewed from a plane, showing a configuration of a first embodiment of a freeze protector according to the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a second embodiment of a freeze protector according to the present invention as viewed from a plane.

FIG. 3 is an explanatory diagram showing a configuration of a third embodiment of a freeze protector according to the present invention as viewed from a plane.

FIG. 4 is an explanatory view showing a state where FIG. 3 is pulled in a longitudinal direction X.

FIG. 5 is an explanatory view in which the shape of a component member of a planar body is changed in the third embodiment.

FIG. 6 is an explanatory diagram in which the width of the freeze protector of the third embodiment is changed.

FIG. 7 is an explanatory view in which an engaging portion and an engaged portion are provided in the freeze protector of the third embodiment so that the width can be arbitrarily changed.

FIG. 8 is a plan view showing a configuration of a fourth embodiment of a freeze protector according to the present invention, as viewed from above.

FIG. 9 is an explanatory diagram showing another embodiment of FIG. 8;

FIG. 10 is an explanatory view showing another form of the planar body as viewed obliquely.

FIG. 11 is an explanatory view showing a state in which the freeze protector according to the present invention is attached to a water pipe.

FIG. 12 is an explanatory view showing a configuration of a fifth embodiment of an antifreezing device according to the present invention, as viewed from a plane.

FIG. 13 is an explanatory diagram showing a configuration of another embodiment of FIG.

FIG. 14 is an explanatory view showing the structure of a conventional anti-freezing device.

FIG. 15 is an explanatory view showing a state in which a conventional anti-freezing device is attached to a water pipe.

[Description of Signs] 10 Anti-freezing device 12 Connecting material 14 First end connecting material 16 Second end connecting material 24 Plane 24a Constituent member 56 Heating wire

Claims (8)

[Claims] An antifreeze device comprising a plurality of elastic heating wires bent in a waveform and arranged in a plane, and the heating wires are connected to each other. 2. An antifreezing device comprising: a plurality of elastic heating wires bent in a waveform, which are arranged side by side while intersecting in a plane, and wherein the heating wires are connected at an intersection. 3. An anti-freezing method, wherein a flexible heating wire bent in a corrugated manner is integrally attached on a stretchable planar body along the stretching direction of the planar body. vessel. 4. The antifreezing device according to claim 3, wherein the planar body is formed of a rubber material, a foam, or a nonwoven fabric. 5. The freeze protector according to claim 3, wherein the planar body is formed in a net shape using a synthetic resin material. 6. The antifreezing device according to claim 5, wherein the planar body is formed in a net shape formed by overlapping circular, elliptical or rhombic shapes. 7. The planar body is repeatedly provided with steps.
4. An anti-freezing device according to claim 3, wherein the heating wire has elasticity along the direction in which the steps are arranged, and the heating wire is fixed at the top of the step at an intermediate portion between adjacent bent portions. . 8. A resilient power supply lead wire which is bent in a wave form, is arranged side by side in a plane, and is connected to each adjacent bent portion. And the return portion are arranged side by side in plane and the bent portions approaching the forward portion and the return portion are connected by a connecting material,
An elastic heating wire, which is mounted on the power supply lead wire in the same direction as the power supply lead wire, is disposed on one end side of the power supply lead wire, and has one end of the power supply lead wire and heat generation A first end connecting member to which both ends of the wire are integrally connected and to which a power cord for supplying power to the heating wire and the power lead is attached; A first sub-freezing protector having a first connector for integrally connecting the other end of the lead wire and the folded portion of the heating wire; bent in a waveform, arranged in parallel in a plane, and bent in close proximity to each other Two power supply leads having elasticity connected to each other, a forward part and a return part formed by folding back at an intermediate part in a plane, and a bent part where the forward part and the return part approach each other. Comrades are connected with connecting materials, A heating wire having elasticity, which is disposed on the lead wire in the same direction as the power supply lead wire, is disposed on one end side of the power supply lead wire, and has one end of the power supply lead wire and the heat generation wire. The other end of the power supply lead wire, a second connector for supplying power to the heating wire and the power supply lead wire when the first connector is connected to the first connector. A second sub-freeze protector having the same structure as the first connector, and having a third connector integrally connecting the other end of the power supply lead wire and the folded portion of the heating wire. An antifreezing device comprising: