JPH0718124U - Heating panel - Google Patents

Abstract

(57) [Summary] [Purpose] For heating that can completely separate carpentry work and electrical work, can perform construction work efficiently, and can easily perform inspection work of electrical wiring. Provide the panel. A heating panel having a laminated structure A in which a sheet heating element 3 having a conductor is provided on the plate members 1 and 2. At the edge of the laminated structure A, there is provided a concave portion 4 in which at least a surface facing the front surface of the heating panel is opened, and the concave portion 4 is provided with an end portion of a conductor wire 7 connected to a conductor and from the outside. Connecting means 5 and 6 detachably attached to the end of the lead wire 7
And a lid 12 for concealing the opening of the recess 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heating panel used as a material for a floor heating system or the like, and particularly to improvement of a connecting portion of a conductor.

[0002]

[Prior art]

 As a heating panel used for floor heating of a house, for example, a sheet heating element with embedded heating wires and veneer plywood are laminated, and a groove is formed in a part of the edge on the back side of the laminated sheet. A structure in which a lead wire is drawn out is provided. When laying such a heating panel on the floor of a house, first lay the first panel on the floor and nail it in place, then place the second panel inside out and out of the groove. Connect the existing conductor to the conductor of the first panel. Next, the connecting portion of the conducting wire is accommodated in the groove of the second panel, the panel is inverted, and fixed by laying nails as in the first sheet. In this way, the panels are laid one after another while connecting the panels, and the conductors of the panels are connected to the controller or the like to complete the construction work.

[0003]

[Problems to be solved by the device]

 In this way, with conventional heating panels, wiring between panels and laying nails must be performed alternately for each panel, which increases the play time for carpenters and electricians, and It had the drawback of being inefficient. In addition, if there is a mistake in the electrical wiring or a malfunction occurs, the panel must be turned over and inspected, which complicates the work.

[0004]

[The purpose of the device]

 The present invention was made in order to solve the problems of the conventional heating panel, and it is possible to completely separate carpentry work and electrical work, and to perform the construction work efficiently. Of course, it is an object of the present invention to provide a heating panel that allows easy inspection of electric wiring.

[0005]

[Means for Solving the Problems]

 The heating panel of the present invention is provided with a recessed portion having at least a face facing the front surface side of the heating panel opened at the edge of the laminated structure of the plate material and the planar heating element, and the conductive portion of the planar heating element is provided in this recessed portion. The present invention is provided with a wire connecting means for detachably attaching the end of the conductor wire connected to the body and the end of the conductor wire from the outside, and a lid body for concealing the opening of the recess.

The wire connecting means preferably comprises a casing that fits into the recess and has a surface facing the front side of the heating panel that is open. In this case, the casing is provided with a terminal block for connecting the conductors, and the lid is attached to the opening.

[0007] To give a preferred example that can simplify the structure, the recess is made to penetrate toward the front and back sides of the heating panel, and the casing extends from one side of the heating panel to the recess. Configured to insert. In this case, the inner wall of the recess is provided with stopper means for preventing the case from coming out of the panel when the casing is inserted.

[0008]

[Action]

 In the heating panel having the above-mentioned structure, the heating panel is provided with a concave portion that can be opened and closed by the lid and the connecting means is provided in the concave portion. Wiring work can be performed. Therefore, it is possible to perform electrical work after laying all the panels on the floor, which can significantly improve the work efficiency of the construction work, and to repair or repair the wiring parts without inverting the panel. Can be inspected. In addition, since the terminals themselves are provided on the panels themselves, the wiring work between the panels can be easily done.Furthermore, by connecting the conductors of the panels to the terminal block, the panels can be easily transported and carried during construction. It has the advantage that it is easy and can be made compact and has a good-looking appearance.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 3 show a part of a heating panel formed in a rectangular standard size. Fig. 1 is its plan view, Fig. 2 is a rear view, and Fig. 3 is a side view in the direction of arrow III in Fig. 1. is there. As shown in FIG. 3, this heating panel has a laminated structure A in which a planar heating element 3 is interposed between a first wood board material (board material) 1 and a second wood board material (board material) 2. In this embodiment, the first wood board 1 is a plywood having a thickness of about 3 mm, the second wood board 2 is a plywood having a thickness of about 9 mm, and the sheet heating element 3 has a thickness of about 0.5 mm. It is said that.

At the edge of the laminated structure A, a concave portion 4 having a rectangular shape in plan view is formed so as to penetrate toward the front and back surfaces of the heating panel. A joint box (wiring means, casing) 5 is housed in the recess 4. The joint box 5 is formed in a box shape by a rectangular bottom plate 5a and a side plate 5b formed at an edge of the bottom plate 5a, and has a thickness of the sheet heating element 3 and the second wood board member 2. It is set to the same as the combined thickness. A terminal block (connection means) 6 is formed at the center of the bottom plate 5a. A screw hole 6a is formed in the terminal block 6, and a terminal 8 crimped to the end of the conductor 7 is attached to the screw hole 6a with a screw 9. The conductor 7 is connected to a conductor arranged inside the sheet heating element 3. Further, reference numeral 10 in the figure is a notch for passing the conducting wire 7. The details of the sheet heating element 3 will be described later.

Further, bosses 11 are formed on both sides of the terminal block 6, and a screw hole 11 a is formed in the center of the boss 11. As shown in FIG. 3, a screw 13 is screwed into the screw hole 11 a, and a lid (lid body) 12 is attached to the opening of the joint box 5 by the screw 13.

Next, a pair of side plates 5b facing each other is formed with a protrusion 5c protruding outward. On the other hand, a groove 14 that engages with the protrusion 5c is formed in the inner peripheral wall of the recess 4 excluding the portion of the first wood board 1. The joint box 5 is inserted into the recess 4 from the back surface side of the laminated structure A with the projection 5c positioned in the groove 14, and the projection 5c engages with the back surface of the first wood board 1. Therefore, it does not come out to the surface side of the laminated structure A 1. Further, the joint box 5 is locked in the recess 4 by a stapler needle 15 that is struck on the back surface of the second wood board 2 so as to intersect the protrusion 5c.

The joint box 5 configured as described above is arranged at a predetermined position so that the joint boxes 5 of adjacent panels are abutted against each other when a plurality of heating panels are laid on the floor. Has been done. For example, when connecting the heating panels adjacent to each other in the longitudinal direction, the joint box 5 is arranged at a position forming opposite sides in the longitudinal direction. In addition, a heating panel placed in the corner of the floor or a panel adjacent to that panel in the lateral direction is placed at a position that forms an adjacent side.

In this embodiment, the concave portion 4 is penetrated in the front and back direction of the panel and the joint box 5 is attached to the concave portion 4, but the concave portion 4 is directed from the front surface to the rear surface side of the panel. It may be formed so as to be recessed, and a terminal block as a connecting means may be attached inside the recess 4. Further, in the above embodiment, the joint box 5 is configured to be inserted into the concave portion 4 from the back surface side of the panel, but it may be configured to be inserted from the front surface side or the side surface side.

Next, the structure of the sheet heating element 3 used in this embodiment will be described in detail. 4 is a cross-sectional view of the laminated structure A including the planar heating element 3, FIG. 5 is a plan view of the planar heating element 3, and FIG. 6 is a perspective view of the planar heating element. As shown in FIG. 4, the planar heating element 5 is a laminated body in which two heat generating layers 31 and 32 are sandwiched by two insulating layers 33 and 34 and insulating layers 35 and 36, respectively, and are joined to each other. ing.

As shown in FIG. 5, the heat generating layer 31 has insulating filaments 31a made of insulating fibers as wefts, and conductive filaments (conductors) 31b made of fibers containing conductive fibers and insulation. The filamentous body 31a is woven as warp threads to form a cloth-like body, and the cloth-like body is impregnated with a resin 31c. In the heat-generating layer 31 configured as described above, the conductive filaments 31b are arranged substantially in parallel at a predetermined interval, and the insulating filaments of the same warp yarn are provided between the conductive filaments 31b. The conductive filaments 31b are electrically insulated from each other by the interposition of 31a.

The other heat generating layer 32 also has the same structure as the heat generating layer 31, and the insulating filament 32a and the conductive filament (conductor) 32b are woven to form a cloth. , And is impregnated with the resin 32c. As shown in FIG. 5, the conductive filaments 31b of the heating layer 31 and the conductive filaments 32b of the heating layer 32 do not overlap in the thickness direction when the heating layers 31 and 32 are stacked. , Are arranged so that the positional relations are offset from each other in parallel. Thereby, when the attachment hole (through hole) 3a is formed in the planar heating element 3, even if the conductive filament 31b of the heat generating layer 31 hits the attachment hole 3a and is cut, the conductive filament of the heating layer 32 is cut. 32b is designed not to be cut.

Further, as shown in FIG. 6, a plurality of cutouts 16 are formed at alternate positions at positions (on the side where the joint box 5 is not arranged) forming opposite sides of the planar heating element 3. There is. The cutout portion 16 is for forming an electric heating circuit that circulates in a strip shape in the planar heating element 3. That is, as shown in FIG. 7A, both ends in the longitudinal direction of the conductive filamentous material 31b of the heat generating layer 31 are short-circuited by the short-circuit wire 31d, and a part of the short-circuit wire 31d is cut out at a predetermined interval. It is cut by the portion 16. Then, by applying a voltage to both ends of the sheet heating element 3, as shown in FIG. 7B, the heating resistor portion 17 that circulates in an S shape between the short wire 31d and the conductive filament 31b. Is formed. Therefore, appropriate power supply terminals (not shown) are connected to both ends of the heating resistor portion 17, and the other end of the conductor wire 7 connected to the terminal block 6 is connected to this terminal. There is. The electric resistance of the heating resistor portion 17 can be set by appropriately selecting the interval between the cutout portions 16. The electric heating circuit of the heat generating layer 32 has the same structure, and therefore its description is omitted. The insulating layers 33, 34, 35, 36 have the same structure except that the conductive filaments 31b of the heat generating layer 31 are replaced with insulating filaments, and therefore detailed description thereof will be omitted.

In this embodiment, as the conductive filaments 31b and 32b, 1000 to 3000 carbon fibers having a diameter of 7 μm are bundled into a filament shape. Further, as the insulating filaments 31a and 32a, a large number of glass fibers are bundled into a filament shape having a thickness of about the thickness of the conductive filaments 31b and 32b. Further, an epoxy resin is used as a resin for impregnating a cloth-like body formed by weaving these insulating filaments 31a, 32a or conductive filaments 31b, 32b.

The heating panel having the above structure is manufactured by sandwiching the prepreg of the sheet heating element 3 between the first wood board material 1 and the second wood board material 2 and adhering and curing them while pressing them together. Therefore, the plywood that constitutes the first wood board 1 and the plywood that forms the second wood board 2 are each cut into a predetermined size, and a prepreg of the sheet heating element 3 is produced. Here, the prepreg, as is well known, refers to an uncured resin structure.

The prepreg of the sheet heating element 3 is manufactured as follows. That is, first, the required number of cloth-like bodies that form the heat-generating layers 31 and 32 and the cloth-like bodies that form the insulating layers 33, 34, 35, and 36 are produced. Next, a short-circuit wire 31d (however, the short-circuit wire of the conductive filament 32b is not shown) is connected to both ends of the conductive filaments 31b and 32b, and a power supply terminal is connected to the end of the short-circuit wire 31d. And the end of the above-described conductor 7 is connected to this power supply terminal. Next, each cloth-like body is impregnated with an epoxy resin to prepare an uncured prepreg to serve as the heat generating layers 31 and 32 and the insulating layers 33 to 36. After that, these prepregs are laminated in the above-mentioned arrangement relationship to obtain the prepreg of the planar heating element 3.

Next, the edge portion of the prepreg of the planar heating element 3 is cut to form the cutout portion 16 and the heating resistor portion 17 that circulates in an S-shape is formed. Next, the prepreg of the sheet heating element 3 is sandwiched by the first wood board 1 and the second wood board 2, and this is set in a press device and a pressing force of about 10 kg / cm 2 is applied. At the time of this press compression, the conducting wire 7 is stored in the groove formed in advance in the first wooden board 1 or the second wooden board 2. Next, in this state, power is supplied to the heating resistor portions 17 of the heating layers 31 and 32 to hold the heating layers 31 and 32 at about 130 ° C. for 1 hour, and then the power is supplied to the heating layers 31 and 32. By stopping and allowing to cool for about 1 hour, the prepreg of the sheet heating element 3 is adhered to the first and second wood board members 1 and 2, and the prepreg of the sheet heating element 3 is hardened and laminated. Structure A is obtained.

Next, a procedure for attaching the joint box 5 to the laminated structure A will be described. First, before press-compressing the prepreg of the planar heating element 3 and the first and second wood board members 1 and 2, the recesses 4 are cut in a state in which they are overlapped. Next, the groove 14 is processed only on the second wooden plate material 2, and the grooves 14 are overlapped again and the above-described press processing is performed. At this time, the end of the conductor wire 7 is pulled out to the recess 4 side. Next, the joint box 5 is inserted into the recess 4 and stapled at the protrusion 5c. Next, the terminal 8 is crimped to the end of the conductor wire 7 and attached to the terminal base 6, and the lid 12 is attached to the joint box 5.

Next, a procedure for laying the heating panel having the above configuration on the floor of a house will be described. First, the panels are laid on the floor and fixed by nailing, and then the lid 12 of the joint box 5 is removed to connect the adjacent panels. At this time, since the conductor wire 7 of the panel is attached to the terminal block 6, the conductor wire 7 of one of the panels is removed and connected to the terminal block 6 of the other panel. In this way, all the panels are connected together and the conductor 7 of a predetermined panel is connected to the controller or the like. Next, the lid 12 is attached to the joint box 5, and the construction work is completed.

As described above, in the heating panel having the above-described structure, since the concave portion 4 is formed in the edge portion and the joint box 5 having the terminal block 6 to which the conductor wire 7 is attached is attached to the concave portion 4, Wiring work can be performed from the front side of the panel. Therefore, since the electrical work can be performed after laying all the panels on the floor, the work efficiency of the construction work can be remarkably improved, and the wiring part can be connected without inverting the panel. Can be repaired or inspected. In addition, since the terminal block 6 is provided on the panel itself, the work of connecting the panels to each other can be performed more easily. Furthermore, by connecting the conductor 7 of the panel to the terminal block 6, it is possible to transport the panel. It is easy to carry during construction and has a compact and attractive appearance.

Further, in the above embodiment, the joint box 5 is inserted into the recess 4 from the back side of the panel, and the projection 5c on the side surface of the joint box 5 locks the recess in the recess 4. Therefore, the structure is simplified. At the same time, the joint box 5 is firmly fixed in the recess 4. Furthermore, after the joint box 5 is inserted into the concave portion 4, it can be attached simply by spanning the projection 5c and stapling it, so that the panel can be assembled very easily.

Further, according to the heating panel of the above-mentioned embodiment, it is possible to obtain a heating panel having a desired heat generating function without substantially impairing the features such as the appearance and the function of the conventional wood board. Is. This is a structure in which the sheet heating element 3 which is remarkably excellent in mechanical, physical and chemical strength and is also extremely advantageous in thermal properties such as heat conduction and heat efficiency is integrally formed by sandwiching it with a wooden board material. It was because. That is, since the heat generating layers 31 and 32 and the insulating layers 33, 34, 35 and 36 that form the planar heating element 3 are formed by impregnating the cloth-like body with the resins 31c and 32c, each layer itself is extremely thin. Can be strong. In this respect, the structure and function, and the function and effect thereof are basically different from the conventional planar heating element in which a heating layer is formed on the surface of a conventional insulating substrate or the heating layer is covered with a resin. That is, in the structure of this embodiment, the heat generating layers 31 and 32 have a structure in which a cloth-like body formed of conductive fibers and insulating fibers is impregnated with resin, and the conductive fibers themselves are energized. I have to. That is, since this conductive fiber constitutes a part of the cloth-like body as the reinforcing core material of the heat-generating layer and is impregnated with resin, the strength of the whole heat-generating layer is remarkably strong. Of course, since the conductive fiber is integrally incorporated inside this strong heat generating layer as a part of the cloth-like body, it has remarkable durability against external stress and pressure, and It also exhibits extremely strong durability against internal stress caused by the difference in thermal expansion when the conductive fiber is energized to generate heat. On the other hand, in the conventional case where the heat generating layer is formed on the surface of the insulating substrate described above, even if the heat generating layer is coated with resin, the heat generating layer and the substrate are separate layers until the external layer. It is significantly inferior in durability against stress, pressure or internal stress as compared with the case of the above embodiment. Further, in the above-mentioned embodiment, in addition to this, the heat generating layer and the insulating layer are laminated to form a multi-layer structure, so that the mechanical strength thereof is extremely large. Further, since the heat generating layers 31, 32 are sandwiched between the insulating layers 33, 34 and 35, 36, the effect of covering the heat generating layers with the insulating layer can be obtained, and the insulation and durability are extremely excellent. ing. Therefore, as a result of this and the first wood board 1 and the second wood board 2 being integrally joined, this heating panel is, so to speak, a plywood having a core material that is remarkably excellent in mechanical, physical, and chemical strength. The internal structure and function have the characteristics of this core material, but also have the unique appearance (texture, texture, etc.), feel, and other characteristics of the wooden board.

Further, in the heat generating layers 31 and 32, the conductive filaments 31b and 32b are arranged at a predetermined interval, and these are short-circuited by the short-circuit line 31d at both ends, and the short-circuit line 31d is cut out. Since the heat generating resistance circuit 17 is formed by cutting it by 16, it is possible to easily form an electric heating circuit having a desired resistance and current carrying capacity. Further, since the positions of the conductive filaments 31b and 32b of the heat generating layers 31 and 32 are mutually displaced in parallel, the mounting holes (through holes) are temporarily provided in the planar heat generating element 3 as shown in FIG. 3a is provided, the conductive filaments 31b of the heat generating layer 31 do not cut even if the conductive filaments 31b of the heating layer 31 hit the attachment holes 3a and are cut. It is possible to suppress fluctuations in heat generation capacity to the extent that there is no practical problem. Moreover, since the positions of the conductive filaments 31b and 32b are displaced in this way, the temperature distribution can be kept good. Further, since the sheet heating element 3 of the above-mentioned embodiment is a sheet-shaped body impregnated with a resin, a plurality of layers are laminated and integrally cured, so that, for example, a glass epoxy laminated plate used as a printed circuit board is used. The manufacturing method or the manufacturing apparatus can be diverted, and the manufacturing is easy, and the manufacturing cost can be reduced.

Further, when the prepreg of the sheet heating element 3 and the first and second wooden boards 1 and 2 are bonded and cured, the heating layers 31 and 32 are energized without using an external heating device. In particular, when the sheet heating element 3 is a large one to be attached to a large structure, it can be heated and cured relatively easily without using a large external heating device, since it is self-heated and cured. The advantage is that it can be done.

Further, in the above-mentioned embodiment, in order to simplify the explanation, an example in which the insulating layer constituting the planar heating element 3 has four layers and the heating layer has two layers is mentioned. The higher the number, the better the heat generation capacity, temperature distribution, strength, durability, etc.

Further, in the above embodiment, the positional relationship between the conductive filaments 31b of the heating layer 31 and the conductive filaments 32b of the heating layer 32 is shifted in parallel to each other, but this is orthogonal to each other. Alternatively, they may be intersected at 45 ° or any other angle. In that case, it goes without saying that the electrode structure of each heat generating layer is appropriately provided so as to suit each case.

Further, in the above-mentioned embodiment, the carbon fiber and the glass fiber are formed into a thread shape, and the carbon fiber and the glass fiber are arranged as warp threads and weft threads so as to intersect each other at a right angle to form a cloth-like body. Is not limited to this, and may be woven by another weave, and it is not always necessary to form the cloth-like body from the insulating fibers and the conductive fibers in the form of threads, and the fiber state can be maintained. It may be cloth-like, and the conductive fibers may be arranged so as to form an electric heating circuit.

Further, when a plurality of heat generating layers are provided, by making the arrangement positions and arrangement densities of the conductive fibers provided in these heat generating layers different from each other, more appropriate heating depending on the application can be performed.

Further, in the above embodiment, the glass fiber was used as the insulating fiber, but the insulating fiber is not limited to this and may be aramid fiber, PP, nylon 66 or the like. Further, although carbon fibers, which can easily obtain long fibers, were used as the conductive fibers, other conductive fibers may also be used. Further, although the epoxy resin is used as the resin in this embodiment, the resin is not limited to this, and other thermosetting resin, or a thermo-traceable resin when used at a relatively low temperature may be used.

The heating panel of the present invention can be used not only as a floor material that also serves as a heater for floor heating, but also as a wall material. Further, by manufacturing as in the above-mentioned embodiment, it can be used also as an interior wall structural material, and therefore wall heating can be easily realized without particularly providing equipment separate from the wall structural material. In addition, it is extremely effective and versatile as a new member for various applications where surface heating is required while taking advantage of the characteristics of a wooden board material as a structural material, such as a foot heating plate and a structural material of a chair having a heat generating function. Application can be expected.

[0036]

[Effect of device]

 As described above, in the heating panel of the present invention, at least the recess facing the front side of the heating panel is provided at the edge of the laminated structure of the plate material and the planar heating element, and this recess is provided in this recess. , A connection means for detachably attaching the end of the conductor wire connected to the conductor of the planar heating element and the end of the conductor wire from the outside, and a lid body for concealing the opening of the recess are provided. Therefore, the wiring work can be performed from the front surface side of the panel. Therefore, it is possible to perform electrical work after laying all of the heating panels on the floor, and it is possible to significantly improve the work efficiency of the construction work, as well as to repair the connection parts without inverting the panel. And can be inspected. In addition, since the terminal block is provided on the panel itself, it is possible to easily connect the panels to each other, and by connecting the conductors of the panel to the terminal block, it is easy to transport the panel or carry it during construction. Moreover, it has an excellent effect such as a compact and good-looking appearance.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a lid of a joint box of a heating panel according to an embodiment of the present invention is removed.

FIG. 2 is a rear view showing the joint box of the heating panel according to the embodiment of the present invention.

FIG. 3 is a view in the direction of arrow III in FIG.

FIG. 4 is a partial sectional view of a heating panel according to an embodiment of the present invention.

FIG. 5 is a plan view showing a part of a heat generating layer.

FIG. 6 is a perspective view of a planar heating element.

FIG. 7 is an explanatory diagram of an electric heating circuit of a heating layer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st wood board material (board material), 2 ... 2nd wood board material (plate material), 3 ... Sheet heating element, 4 ... Recessed part, 5 ... Joint box (casing), 6 ... Terminal block (wiring means), 7 ...
Conductive wire, 12 ... Lid (lid), A ... Laminated structure.

Claims (3)

[Scope of utility model registration request] 1. A heating panel having a laminated structure in which a sheet-shaped heating element having a conductor is provided on a plate material, and at least a surface facing the front surface side of the heating panel is opened at an edge portion of the laminated structure. A recess is provided, and in this recess, connecting means is detachably attached to the end of the conductor connected to the conductor and the end of the conductor from the outside, and a lid for concealing the opening of the recess. A heating panel characterized by being provided. 2. The wiring means includes a casing that fits into the recess and has a surface facing the front side of the heating panel that is opened, and a terminal block that is provided in the casing and to which the conductor wire is attached. The heating panel according to claim 1, further comprising: the lid body attached to an opening portion of the casing. 3. The recess is made to penetrate toward the front and back surfaces of the heating panel, and at the inner wall portion thereof,
A stopper means that engages with the casing when the casing is inserted into the recess from one side of the heating panel and prevents the casing from coming out to the other side of the heating panel. The heating panel according to claim 2, wherein: