JPS5820828Y2 - heating panel - Google Patents

Description

[Detailed explanation of the idea] This invention relates to heating panels.

In a conventional heating panel in which a surface heating element is laid on the back side of a metal plate frame having a top plate surface and covered with a heat insulating material, one corner of the metal plate frame A as shown in FIG. A notch B is formed in the opening side of the metal plate frame A, and a rectangular back material C that is equal to the metal plate frame A is covered from the opening side of the metal plate frame A, and the corners of the back material C that protrude from the notch B and the corners of the back material C are The space surrounded by the side frame piece vertically disposed on the end edge of the part and the side frame piece E of the notch B was defined as the wiring joint space.

As a result, not only does the heating panel become heavier and difficult to handle, but additional parts are required for the backing material C, which increases costs.Furthermore, since a metal plate is usually used as the backing material C, Due to its good thermal conductivity, heat dissipation from this backing material C was severe, resulting in poor thermal efficiency.

Other conventional heating panels include a part with a cutout,
It has been proposed to place a joint box in the notch.

This allows for material savings and also solves thermal efficiency problems.

However, there were problems with the work involved in attaching the joint box to the heating panel and the strength of the attachment.

That is, when attaching the joint box by spot welding, there is a problem in that the spot gun hits other parts of the joint box, making it difficult to weld.Furthermore, fixing with screws has poor workability and also has the problem of loosening over time.

Therefore, the purpose of this invention is to reduce the overall weight and
It can reduce costs and improve thermal efficiency,
Furthermore, it is an object of the present invention to provide a heating panel with good workability and reliable member mounting strength.

An embodiment of this invention is shown in FIGS. 2 and 3.

That is, this heating panel has a square cutout 2 formed in one corner of a rectangular metal plate frame 1 which has a top plate surface, a surface heating element is laid on the back surface, and a heat insulating material is stretched from above. A metal plate frame 1 is attached to the outer edge of the metal plate frame 1 in a size corresponding to the notch 2 from the opening side of the metal plate frame 1, that is, the side facing the top plate surface 1a.
A square joint bottom member 3 with vertical side frame pieces 3a of the same height is stretched over the side frame pieces 1b of the heating panel. A joint space 4 for a cord to be wired is configured.

At the edge of the notch 2, a side frame piece 2a is formed whose height is the same as that of the other side frame piece 1b of the metal plate frame 1.
A cord insertion notch 2b is formed in a part of the cord.

The joint bottom member 3 is attached to the metal plate frame 1 by using a slit 5 formed in a portion where the side frame piece 1b of the metal plate frame 1 and the side frame piece 2a of the notch 2 are adjacent to each other, as shown in FIG. The side frame piece 3a of the joint bottom member 3 is fitted into the joint part bottom member 3, and the overlapping part of the side frame piece 1b of the metal plate frame 1 and the side frame piece 3a of the joint part bottom member 3 is fixed by spot welding.

The side frame piece 3a of the joint bottom member 3 is formed with a bushing notch 3b into which a bushing for inserting a cord is mounted.

In this way, the joint bottom member 3 that covers only the portion corresponding to the notch 2 is stretched from the opening side of the metal plate frame 1, and the joint bottom member 3 and the notch 2 form a joint that is a space for connecting a cord. Since the space 4 is configured, the area of the members to be stretched on the back side of the metal plate frame 1 is significantly reduced.
Not only is the weight of the entire heating panel reduced, making it easier to handle, but the number of required parts is reduced, leading to a reduction in cost to 1.Also, even when a metal plate is used as the joint bottom member 3, its area is reduced. Since it is small, there is less heat dissipation from the back side, so there is no risk of lowering thermal efficiency.

In addition, the side frame piece 3a of the joint bottom member 3 and the metal plate frame 1
Since the side frame pieces 1b have a structure in which they overlap at their connecting portions, the strength can be improved.

Also, unlike welding a box-shaped item inside the notch,
Since welding is performed to the side frame piece 1b of the metal plate frame 1, there is an advantage that there are no obstacles that come into contact with the electrode when spot welding or the like is performed, making it easy to perform the welding work.

Moreover, since the side frame piece 3a of the joint bottom member 3 is sandwiched between the end surface of the side frame piece 2a of the metal plate frame 1 and the side frame piece 1b, the joint bottom member 3 is temporarily held during welding. This also has the advantage of making the work easier.

As described above, the heating panel of this invention has a heating panel in which a surface heating element is laid on the back side of a metal plate frame having a top plate surface and covered with a heat insulating material, and a joint part formed at a corner of the metal plate frame is provided. a joint part bottom member extending from the opening side of the metal plate frame to a region corresponding to the joint part notch and forming a joint part space with its own side frame piece and the side frame piece of the joint part notch; Because it is equipped with
The overall weight is lighter, making it easier to handle, and the number of required materials is reduced, reducing product costs.Furthermore, even if the joint bottom member is made of metal, there is less heat dissipation from the back side, which improves the thermal efficiency of the heating panel. In addition, the side frame piece of the joint bottom member is sandwiched between the end face of the side frame piece of the notch in the metal plate frame and the inner surface of the side frame piece of the metal plate frame, and is overlapped and welded to this inner surface. This has the effect that the joint bottom member can be reliably joined and the joining work can be easily performed.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing a conventional example, FIG. 2 is an exploded perspective view showing an embodiment of this invention, and FIG. 3 is a perspective view of the main parts thereof. 1...Metal plate frame, 1a...Top plate surface, 1
b...Side frame piece, 2...Notch, 2a...
... Side frame piece, 2b ... Notch for cord insertion,
3...□・Joint part bottom member, 3a...
・Side frame piece, 3b...Notch for bushing, 4...
...Joint space.

Claims (1)

[Scope of utility model registration request] In a heating panel in which a surface heating element is laid on the back side of a metal plate frame consisting of a top plate surface and a side frame piece bent from the top plate surface to the back side and covered with a heat insulating material, the heating panel is formed at a corner of the metal plate frame. a notch for the joint portion, a notch side frame piece bent from the top plate surface to the back side at the edge of the notch, and a region corresponding to the notch for the joint portion stretched from the back side of the metal plate frame. The joint bottom member and the two adjacent joint bottom members
The side edges are formed upright to form a joint space with the notch side frame piece, and one end of each extends inward from the notch, and the extending portion meets the end face of the notch side frame piece. A heating panel comprising: a joint bottom member side frame piece which is sandwiched between the inner surface of the side frame piece of the metal plate frame and overlapped with and welded to the inner surface of the side frame piece.