JPH10314649A - Portable heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a device to apply to the drying of a thermosetting coating material, capable of surely fixing to work having a rugged curve surface, while keeping the distance from a heating object surface constant and capable of preventing a radiation heat quantity from being dissipated. SOLUTION: An Al sheet 22 is stretched around the outsides of frames 21 on a shielding cover body 2, the inside surfaces are made into heat reflective surfaces, the bottom facing to the heating object surface is in an open state and a heater 23 is attached to the ceiling part. Further, fixing adsorption legs 3 provided projectingly to the outside are provided. The fixing adsorption leg 3 is assembled of a spherical bearing 31, a ferrite magnet 32 and a polyvinyl chloride sheet 33 and is attached to a tongue piece 25 projected from the low edge part of the frame 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable heating device which is easy to carry, and is particularly suitable for heat curing treatment of repair painting for a part of the painting surface of a large three-dimensional article. The present invention relates to a portable heating device.

[0002]

2. Description of the Related Art Conventionally, when a painted surface of an automobile body that has undergone a painting process is subjected to abrasion or the like for some reason in a car manufacturing factory, repair painting is performed on the damaged portion depending on the degree of damage. It is customary to perform and recover. In this case, a predetermined pretreatment such as degreasing, sanding, and putting is performed on the repaired portion, and a touch-up paint of the same color as the surroundings is applied two to three times, and is sufficiently dried to finish.

[0003] The drying of the coated surface is achieved by radiating heat from an infrared lamp or the like and heating, thereby obtaining the advantages of sufficiently curing the coated film and shortening the drying time. As the heating device for this purpose, a device in which an appropriate number of infrared lamps are attached to a stay fitting with a light bulb socket detachably attached to a rod-shaped stand jig with a chuck is used.

However, in such a heating device,
Since it is difficult to set the distance to the surface to be heated constant, the drying quality of the coating film tends to be uneven. In addition, the amount of heat is easily dissipated to parts other than the work, and as a result, the amount of heat for heating is insufficient, so that the temperature of the surface to be heated cannot be increased, so that repair using a thermosetting paint having excellent durability cannot be performed. there were. In addition, when targeting automobiles or large home appliance parts, it is necessary to fix the infrared lamp with a long stay fitting each time to repair the painted surface of the central part or the back side of the large workpiece, which makes the work extremely unstable. Had become.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is possible to reliably maintain a constant distance to a surface to be heated even if the workpiece is a concave-convex surface. It can be fixed and prevents radiation heat radiation,
Provided is a portable heating device which can be applied to a thermosetting paint and is relatively inexpensive and portable.

[0006]

SUMMARY OF THE INVENTION The above-mentioned problem is caused by a heat source,
Shielding means incorporating the heat source and covering the surface to be heated, and fixing means which is provided to protrude outside the shielding means and which can be detachably attached to a work portion outside the surface to be heated and has a variable fixing direction. And a portable heating device characterized by having the following.

Another problem is that a far-infrared heater is provided on the ceiling to cover and heat the surface to be heated, and the inner surface of the shielding cover having an open bottom surface is made of a heat-resistant material, preferably aluminum. Or a heat-reflection surface made of a material such as stainless steel, and a suction means detachably attached to a work portion outside the surface to be heated and protruding outside the shielding cover so as to be disposed. Heating device.

A shielding sheet for closing a gap with a surface to be heated is provided at a lower edge of a side wall of the shielding cover;
Alternatively, it is preferable that the suction means is a magnet suction tool, a suction cup or a reduced pressure suction disc, and that these suction means have a variable suction direction with a spherical bearing interposed therebetween. Further, it can be embodied as a form in which the surface to be heated is a painted surface of an automobile or a large home appliance part.

[0009]

Next, an embodiment of a portable heating apparatus according to the present invention will be described with reference to FIGS. FIG.
In the appearance of the portable heating device that can cover and heat the heating target surface (not shown) of the work,
It consists of a handle 1 on the upper surface and a shielding cover 2 provided with a fixing suction leg 3 protruding outward. Then, an aluminum sheet 22 is stretched around the outside of the frame 21 on the shielding cover 2, the inner surface is used as a heat reflecting surface, and the bottom surface facing the surface to be heated is open.
A heater 23 (not shown) is attached to the ceiling and wired so that power can be supplied from a terminal box 24 on the upper surface.

The shielding cover 2 shown in FIG. 1 has a cubic shape in which an aluminum sheet 22 whose inner surface acts as a heat reflecting surface is stretched around a sheet metal 1 mmt aluminum frame 21 having a side of about 200 mm. However, the present invention is not limited to this shape and size, and a cylindrical shape having a ceiling of an appropriate size, a bowl shape with a prone face, and the like can be appropriately applied. As the heater 23 serving as a heat source, a thermocouple embedded type far-infrared heater of about 200 V and 400 W is suitable, but an infrared lamp type or the like can also be applied. Further, the terminal box 24 accommodates a connection plate for drawing in external power supply wiring, but of course, other types may be used.

The fixing suction leg 3 is provided with a spherical bearing 3.
1. A tongue piece 2 assembled from a ferrite magnet 32 and a PVC sheet 33 and protruding from the lower end of the frame 21
5 is attached. FIG. 2 shows the fixing suction leg 3.
The spherical bearing 31 has an outer race 31b.
And a shank 31a with a ball fitted thereto. The outer race 31b and the shaft center of the shank 31a with a ball are formed to be bendable within a certain range. This outer ring 31b is fixed to a holder 34 with bolts, and a ferrite magnet 32 is attached thereto. Further, on its lower surface, a PVC sheet 33 having a thickness of about 0.5 mmt is attached as a cushioning material.

The fixing suction leg 3 shown in FIGS. 1 and 2 uses a magnet as a fixing element. However, in the present invention, other suction means such as a soft plastic suction cup or a reduced pressure suction cup for reducing the pressure by a vacuum pump. Alternatively, the fixing means can be a fixing element. When a suction cup or a reduced pressure suction cup is used, there is an advantage that the target work can be suitably applied to materials other than iron.

[0013] The portable heating device thus configured can be finished in a compact form in which the weight of the portable portion is about 1.5 kg and the total weight is 10 kg or less including the control box. It will be extremely excellent. In particular, it is suitable when the size of the work to be heated is large, such as a painted surface of an automobile or a large home appliance part.

In order to attach the heating device to the work, the fixing means or the suction means as described above is used, so that the attachment and detachment are easy and the direction of the suction surface or the fixing surface can be changed. Since it is formed, even if the surface of the work is slightly uneven or curved, the work can be reliably fixed while maintaining a constant distance from the surface to be heated.

At the same time, the fixing means or the suction means of the present invention is provided so as to protrude outside the shielding cover. , And is kept at a low temperature close to the outside because it is not heated by a heat source. Therefore, since the heat resistance is not particularly required for the cushioning member and the like used here, there is obtained an advantage that an ordinary low-cost general-purpose part can be applied.

Further, since the surface to be heated is heated with the shielding cover covering the surface, the radiation of the radiant heat from the heat source is effectively prevented, and the ambient temperature is 200 ° C. or more and the target surface temperature is 1
It is possible to maintain a high temperature of about 50 ° C. Here, it is more effective if the inner surface of the shielding cover is a heat reflecting surface such as aluminum or stainless steel. As a result, there is obtained a remarkable advantage that repair using a thermosetting type coating having excellent durability as employed in a coating factory is possible.

As shown in FIG. 1, if a hanging sheet 22a for closing the gap with the surface to be heated is provided over the entire periphery of the lower end edge of the side wall of the shielding cover, the cold outside air can be removed from the gap. This is preferable because the flow of the heat does not make the internal temperature unstable and the heating of the fixing suction leg 3 is hardly conducted. As the hanging sheet 22a, a heat-resistant woven fabric woven with aluminum foil, metal wire such as aluminum, glass fiber, or the like is appropriate.

In FIG. 1, the fixing suction leg 3 is illustrated as being completely fixed to the tongue piece 25. However, by turning the shank 31a of the spherical bearing 31, the fixing suction leg 3 is fixed. It is preferable that the height can be raised and lowered, or that a spring material is inserted between the heights so as to have a vertical height adjustment function. In addition, the fixing suction legs 3
As for the required number of, if at least three are prepared, the purpose of fixing is achieved.

[0019]

As described above, the portable heating apparatus of the present invention can be reliably fixed while maintaining a constant distance from the surface to be heated of the work to be heated, and dissipates the radiant heat. It is possible to apply a thermosetting paint with excellent durability, and it is not necessary to use high heat-resistant parts for fixing legs, and there is an excellent effect that inexpensive general-purpose parts can be applied. . Therefore, the present invention is a portable heating device that solves the conventional problems,
Its industrial value is extremely large.

[Brief description of the drawings]

FIG. 1 is an essential part perspective view for explaining an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the fixing suction leg of the present invention. FIG.

[Explanation of symbols]

2 Shielding cover, 21 frames, 22 sheets, 23
Heater, 25 tongue pieces, 3 fixing suction legs, 31 spherical bearing, 32 magnet, 33 PVC sheet, 34 holder.

Claims (6)

[Claims] 1. A heat source, a shielding means which contains the heat source and covers the surface to be heated, and is provided so as to protrude outside the shielding means, and is detachably fixed to a work portion outside the surface to be heated. A portable heating device, comprising: fixing means for making the temperature variable. 2. A far-infrared heater is disposed on the ceiling to cover and heat the surface to be heated, and the inner surface of the shielding cover having an open bottom surface is used as a heat reflecting surface of a heat-resistant material. A portable heating device, wherein a suction means detachably attached to a work portion outside the surface to be heated is provided so as to protrude outside the covering body. 3. The portable dryer according to claim 2, further comprising a hanging sheet at a lower end edge of a side wall of the shielding cover for closing a gap with a surface to be heated. 4. The portable heating apparatus according to claim 2, wherein the suction means is a magnet suction tool, a suction cup or a reduced pressure suction cup. 5. The portable heating apparatus according to claim 2, wherein said suction means changes a suction direction via a spherical bearing. 6. The portable heating apparatus according to claim 2, wherein the surface to be heated is a painted surface of an automobile or a large household electric appliance part.