JPS6343834Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heating element mounting device for a heater such as a kotatsu.

BACKGROUND ART Conventionally, a thin sheathed heater using a linear heating element 1 bent in a meandering manner as shown in FIG. 1 has been used in a kotatsu or the like installed in a shallow place under the floor surface. The linear heating element 1 has an exterior made of an aluminum pipe. The linear heating elements 1 are arranged in two stages, upper and lower, and crimping fittings 2 are attached near the folded portions 1a and 1b on both sides as shown in FIGS. 2 and 3.
is fixed to the heater body. However, since a large number of crimping fittings 2 must be crimped, there is a problem in that assembly work is time-consuming. In addition, the folded portions 1 on both sides of the linear heating element 1 are
Since a and 1b were fixed, it was difficult to absorb the thermal expansion and contraction of the linear heating element 1, and unreasonable force was applied to the part fixed by the crimping fitting 2, causing the linear heating element 1 to deform or become unfixed. There was a problem that some slack occurred.

Therefore, an object of this invention is to provide a heating element mounting device for a heater that is easy to assemble and does not cause problems due to thermal expansion and contraction of the heating element.

An embodiment of this invention is shown in FIGS. 4 to 12. In the figure, 3 is a rectangular heater body, and 4 is a meandering linear heating element. The linear heating elements 4 are stacked in two layers, upper and lower, and are attached to the heater body 3 via two parallel fasteners 5 and 6. The linear heating element 4 has an exterior made of an aluminum pipe, and a cord 7 is connected to both ends.
Each stopper 5, 6 has a substantially L-shaped cross section as shown in FIGS.
b is bent and formed, and the bottom plate portions 5c and 6
Reinforcing falling pieces 5d and 6d are bent from the side edge of c. Further, each of the fasteners 5, 6 has heating element insertion holes 8 in the rising portions 5a, 6a at appropriate intervals in the longitudinal direction. The heating element insertion hole 8 is provided over the entire vertical width of the rising pieces 5a, 6a, and this vertical width is such that the linear heating element 4 is
The height is such that they fit tightly together as stacked tiers. The width of the heating element insertion hole 8 is such that the U-shaped folded portions 4a and 4b of the linear heating element 4 can be inserted therethrough. Further, the width of the rising pieces 5a, 6a between the heating element insertion holes 8 is such that it fits inside the U-shaped folded portions 4a, 4b of the linear heating element 4. Only the tip of the U-shaped folded portion 4b on one side of the linear heating element 4 is fitted into the heating element insertion hole of the stopper 6, and the U-shaped folded portion 8a on the other side is inserted into the rising piece of the stopper 5. It is deeply inserted into the heating element insertion hole 8 so as to straddle the heating element insertion hole 5a. Also, some of the U-shaped folded portions 4b on one side are provided with holding pieces 6b of the stopper 6 as shown in FIGS. 9 and 11.
A U-shaped stopper piece 9 is placed over the U-shaped stopper piece 9, and both ends 9a of the U-shaped stopper piece 9 are attached to the bottom plate portion 6 of the stopper 6.
The mounting protrusion 10 (Figs. 10 and 11)
It is locked in the mounting hole 11 shown in the figure. The bottom plate portions 5c and 6c of the fasteners 5 and 6 are provided with raised protrusions 12 that engage with the side surfaces of the linear heating element 4 to prevent displacement.
There are many. Further, a large number of presser tongue pieces 13 are provided on the presser pieces 5b and 6b of the stoppers 5 and 6. To explain the mounting structure of the fasteners 5, 6 to the heater main body 3, near both ends of the fasteners 5, 6, there are a mounting slit 14, a notch hole 15 for screwing, and a mounting tongue 16 (Fig. 7, By fixing the insulating mounting plate 17, which is fitted into the mounting slit 14 and crimped with the mounting tongue 16, to the heater main body 3 with the screws 18, the fasteners 5, 6 is being fixed.

With this structure, when assembling, the right U-shaped folded portion 4b of the linear heating element 4 is inserted into the heating element insertion hole 8 from the left side of the left stopper 5 in FIG. Then, this U-shaped folded portion 4b is further inserted into the heating element insertion hole 8 of the right stopper 6. Then, after fixing both fasteners 5 and 6 to the heater body 3 with the insulating mounting plate 17, 2 of the right fasteners 6
Assembly is completed by attaching U-shaped retaining pieces 9 to the locations. In this way, the U-shaped folded portion 4b on one side of the linear heating element 4 is fixed with the U-shaped stopper piece 9,
Since the other end is simply inserted into the heating element insertion hole 8 of the stopper 5, the number of steps for fixing the linear heating element 4 is reduced compared to the conventional one, and assembly is easy. Also, since only one side is fixed like this and the other side is just inserted, the linear heating element 4
Even if expansion and contraction occurs due to heat, no unreasonable force is applied,
Therefore, there is no problem that the linear heating element 4 is deformed or loosely fixed and shakes.

In addition, in the above embodiment, the direction of the stopper 5 on the left side in FIG.
Although it is oriented so that it is located on the left side, it may be oriented so that it is located on the right side.

As described above, the heating element mounting device for a heater of this invention has a heater main body, a cross section of which is formed in a substantially L-shape, and a heating element insertion hole is provided in the rising piece portion, and is mounted to the heater main body. two fasteners parallel to each other; a linear heating element formed in a meandering shape and having folded portions on both sides inserted into the heating element insertion holes of each of the fasteners; A U that covers the linear heating element at the folded part on one side of the body and has both ends fixed to the bottom plate part of the stopper.
Since it is equipped with a letter-shaped retaining piece, only one side of the linear heating element is fixed, and the other side is inserted into the heating element insertion hole and supported, which reduces the number of man-hours for fixing. It is easy to assemble, and thermal expansion and contraction is absorbed, so no excessive force is generated, and there are no problems with deformation or loosening.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a conventional heater, FIG. 2 is a partially enlarged plan view thereof, FIG. 3 is a sectional view of the heating element fixing part, and FIG. 4 is a plan view of an embodiment of this invention. Figure 5 is a front view of the stopper, Figure 6
The figure is a plan view of the fastener, FIG. 7 is a rear view of the fastener, FIG. 8 is a cross-sectional view of the fastener, and FIG. 9 is one of the fasteners and the linear heating element. A perspective view showing the relationship between
Figure 0 is a perspective view showing the relationship between the other fastener and the linear heating element, and Figure 11 is XI-XI of Figure 4.
The sectional view, FIG. 12, is a sectional view taken along the line XII-XII in FIG. 4. 3... Heater main body, 4... Linear heating element, 4a,
4b...U-shaped folded part, 5,6...stopper,
5a, 6a... Rising piece, 5b, 6b... Holding piece, 5c, 6c... Bottom plate part, 8... Heating element insertion hole, 9... U-shaped stopper piece, 11... Mounting hole, 12
... Cut and raised locking piece, 17 ... Insulating mounting plate.

Claims (1)

[Scope of utility model registration request] A heater main body, two mutually parallel fasteners each having a substantially L-shaped cross-sectional shape and having a heating element insertion hole provided in a rising piece portion and attached to the heater main body, each having a meandering shape. a linear heating element which is inserted into the heating element insertion hole of each fastener, and a folded part on one side of the linear heating element covers the linear heating element at both ends. and a U-shaped stopper piece fixed to the bottom plate portion of the stopper.