JP6338224B2 - Portable electromagnetic induction heater for waterproof sheet construction - Google Patents

Description

  The present invention relates to a portable electromagnetic induction heater used for fixing a waterproof sheet to a waterproof construction surface as a waterproofing construction surface such as a land roof or a sloped roof of a building, a floor of a house veranda or a roof balcony.

  As a construction method for laying waterproof sheets on rooftops such as flat roofs, many conductive disk plates with adhesive layers laminated on the surface are distributed in a scattered manner with anchor bolts etc. on the waterproof construction surface of concrete slabs. Attach and fix, and apply a waterproof sheet to the entire covering state of the waterproof construction surface, press the waterproof sheet against the disk plate from above with an electromagnetic induction heater, and heat the disk plate by the electromagnetic induction action of the heater For example, as described in Patent Documents 1 and 2, a method for melting the adhesive layer by the heat generation and bonding and fixing the waterproof sheet to the disk plate is well known.

Japanese Patent No. 3787532 JP 2016-110825 A

  However, the conventional electromagnetic induction heaters (heating holder / portable induction heating welding apparatus) described in Patent Documents 1 and 2 are cylindrical with a built-in electromagnetic induction heating coil, and the upper surface of the cylindrical vessel body. Hold the handle across the handle and press the waterproof sheet against the conductive disc plate (conductor piece), and on the upper surface (front surface) of the body or the lower surface (back surface) of the handle, depending on the fingertip of one hand The power switch (heating button) is activated (turned on), but as is clear from the posture state of the worker described in the drawings of Patent Documents 1 and 2, the worker is kneeling on the ground as described above. A heating operation must be performed.

  Further, after the waterproof sheet and the disk plate are bonded and fixed by the above heating operation, it is necessary to perform the work of pressing and pressing from above using a separate plate, waste cloth, silicon pad or the like while kneeling on the ground.

  In that case, the conductive disk plate (conductor piece) is in a large number of scattered distribution states as the assignment to the waterproof construction surface, and the pressing heating operation and the subsequent crimping operation must be performed one by one. Not only that, but rooftop concrete slabs are extremely hot under the summer heat, and working on the ground while kneeling is severe enough to cause burns. An electromagnetic induction heater has not been developed yet.

  The present invention aims to drastically solve the above-mentioned problem. For this purpose, in claim 1, a conductive material that is connected to an electromagnetic induction heating device via a cable having a required length and is preliminarily attached and fixed to a waterproof construction surface. The surface adhesive layer of the conductive disk plate is melted by electromagnetic induction heating action from above the waterproof sheet stretched in a covering state thereon, and the waterproof sheet is bonded and integrated to the conductive disk plate An electromagnetic induction heater,

A cylindrical vessel with the electromagnetic induction heating coil built-in,

A power supply switch exposed from the upper surface of the body,

Similarly, a base plate that is mounted and fixed so as to cross the diameter line of the upper surface,

A pair of opposite handle barrels that are integrally suspended from the base plate by a certain height;

An accepting guide bar for starting operation rod of the power supply switch horizontally and horizontally mounted on the upper ends of the two receiving cylinders;

A handle rod in which the lower ends of both ends of the metal pipe bent into an elongated inverted U-shape are inserted and fixed so as to be freely detachable from above into a pair of opposing receiving tubes,

The above-mentioned horizontally fixed and horizontally mounted from the upper end portion, which is a bent grip portion at a ground height that can be operated by the hand while the operator on the handle rod is standing, to a mid-height position that is lowered by a certain distance An accepting guide bar for starting operation of the feed switch;

An activation operation rod of the power supply switch that is vertically suspended and vertically passed between the activation operation rod reception guide bar and the activation operation rod reception guide bar;

In order for the operator to press the electromagnetic induction heater from above the waterproof sheet to the conductive disc plate, the heating operation of the power switch is pushed down with one fingertip holding the bent grip portion of the handle rod to heat it. It is characterized in that it can be done.

Further, in claim 2, the U-shaped flange pieces in plan view, which are located in correspondence with each other, partially extend from the upper starting operation rod receiving guide bar and the lower starting operation rod receiving guide bar, respectively.

Each of the overhanging flange pieces is formed with an opening for receiving the activation operation rod, and the lower end portion of the activation operation rod that is vertically inserted into both of the reception holes is brought into contact with the surface of the power supply switch. It is characterized by that.

Furthermore, in claim 3, the fixing nuts are welded to the midway height position of the handle rods for both handle rods from the opposite sides, respectively.

The handle rod is pressed into a state where it is prevented from coming off from the receiving tube by the tip of a butterfly bolt that is screwed and fastened to the fixing nut from the inside so as to be freely advanced and retracted.

According to the configuration of the first aspect, the waterproof sheet stretched in a covering state of the entire construction surface is electromagnetically applied from above to a large number of conductive disk plates attached and fixed to the waterproof construction surface such as a roof concrete slab on a flat roof. In the construction of a waterproof sheet that is pressed by an induction heater, melts the surface adhesive layer of the disk plate by the electromagnetic induction heating action, and bonds and integrates the waterproof sheet to the disk plate, the electromagnetic induction heater Grab the upper end (grip) of the handle rod that is suspended from the body with the built-in electromagnetic induction heating coil to a height that allows the operator to operate the hand while standing. The power switch (heating button) can be pressed against the disc plate from above the tarpaulin and with the fingertip of one hand holding the upper end (grip) of the handle. The power switch can be activated (turned on) by depressing the activation (on) switch so that the operator does not have to kneel down on the waterproof construction surface as in the prior art described at the beginning. Originally, there is an effect that the start operation of the power feeding switch can be surely performed.

Further, the handle rod is designed to be inserted into and fixed to the receiving tube so that it can be inserted and removed from the upper side, so that it is a narrow work space in which the electromagnetic induction heater cannot be pressed and heated while the worker is standing. In such a case, pull out the handle rod that hangs up tall from the handle tube receiving tube on the body side, and hold the horizontal starting operation rod receiving guide bar of the handle tube receiving tube. In addition to being able to perform the heating operation of the electromagnetic induction heater, the convenience of being able to be disassembled and packed in a compact and compact manner is also obtained.

In that case, if the structure of Claim 2 is employ | adopted, the starting operation rod of a feed switch can be reliably supported stably (bearing) from the body of an electromagnetic induction heater to the handle rod which stands tall. There is an effect that the activation operation rod can be smoothly pushed down with respect to the power supply switch.

Moreover, since the flange pieces partially projecting from the upper and lower pair of starting operation bar receiving guide bars are U-shaped in a plan view, even if the electromagnetic induction heater falls down, the flange pieces There is no risk of damaging the tarpaulin.

Furthermore, if the structure of Claim 3 is employ | adopted, since a butterfly bolt is employ | adopted, it can be conveniently and conveniently rotated with one hand, without using a special rotation tool. In addition, the butterfly bolt and the fixing nut are installed inside the handle barrel and do not project outside the receptacle, so that even if the electromagnetic induction heater falls down, the tarpaulin will be damaged. There is no fear.

It is a perspective view which shows the connection state of the portable electromagnetic induction heater which concerns on this invention, and an electromagnetic induction heating apparatus. It is a slope view which extracts and shows the portable electromagnetic induction heater. FIG. 3 is a front view of FIG. 2. FIG. 4 is a side view of FIG. 3. It is a disassembled slope figure of the state which extracted the handle rod from the body side of the electromagnetic induction heater. FIG. 4 is a partially enlarged plan view of FIG. 3. 63 is an enlarged front view of 63. FIG. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7. FIG. 9 is a sectional view taken along line 9-9 in FIG. 8. It is a side view which shows another use condition from which the handle rod was extracted and removed. It is a side view which shows the construction work condition of the waterproof sheet by use of an electromagnetic induction heater. It is a partial expanded sectional view of the construction state which bonded and integrated the waterproof sheet to the disc board. It is a front view which extracts and shows the crimping jig used after heating operation. It is an expanded sectional view of the state where a waterproof sheet was pressed against a disk board with the crimping jig.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. A portable electromagnetic induction heater (A) according to the present invention is relatively similar to a high-frequency electromagnetic induction heating apparatus (T) as shown in FIG. It is connected and used via a secondary cable (C2) having a short required length, and is fed and controlled by the heating device (T).

That is, the electromagnetic induction heater (A) has a non-illustrated electromagnetic induction heating coil in a cylindrical body (10) having a diameter (for example, about 105 mm) larger than the height (for example, about 70 mm). If the feeding switch (heating button) (12) exposed from the upper surface (upper lid) (11) of the vessel (10) is pushed down and activated, the electromagnetic induction heating device (T) Power is supplied to the heating coil of the electromagnetic induction heater (A). (13) is a heated display lamp exposed on the upper surface (upper lid) (11) of the vessel (10), and (14) is heat resistant silicon installed on the lower surface (pressing surface) of the vessel (10). It is rubber.

The electromagnetic induction heating device (T) is provided with a casing (15) that can be moved by a method such as wrapping, carrying, carrying on the shoulder, carrying on the back, and incorporating a power supply circuit, a heating control circuit, etc. therein, and is relatively long. Needless to say, it is connected to the commercial power supply via the primary cable (C1) of the required length. A power lamp, a display lamp during heating, a power switch, an output changeover switch, a temperature indicator, and the like are arranged in parallel on the surface of the casing (15), but these are not shown.

In the present invention, the body (10) of the heater (A) so that the power supply switch (12) of the electromagnetic induction heater (A) can be activated (switched on) while the worker is standing. The following special configuration is retrofitted.

That is, as apparent from FIGS. 2 to 5 showing the whole of the electromagnetic induction heater (A) and FIGS. 6 to 9 showing the portion extracted and enlarged, the cylindrical shape of the heater (A) is changed. A relatively thick metal (preferably aluminum) base plate (16) is placed on the upper surface (upper cover) (11) of the eggplant body (10). The cylinder (17) is integrally suspended by a certain height (H1) (for example, about 100 mm). The handle rod receiving cylinder (17) is welded to the base plate (16) as the same metal pipe as the base plate (16). In addition, a nut (18) is embedded in the bottom of each receiving tube (17) so as not to rotate.

Then, from the inside (lower side) of the vessel body (10) through the upper surface (upper lid) (11) as shown in FIG. 9, the fixing bolt (19) screwed and fastened to the nut (18) A base plate (16) of the handle rod receiving cylinder (17) is attached and fixed to the upper surface (upper lid) (11) of the vessel (10). In the illustrated embodiment, the base plate (16) not only crosses the diameter line of the upper surface (upper lid) (11) of the body (10), but also partially flanges projecting into a U shape from the middle thereof. The piece (16a) surrounds the power supply switch (12) as shown in FIGS.

A pair of the handle rod receiving cylinders (17) is suspended in a parallel state, and a starting operation rod receiving guide bar (20) of the power supply switch (12) is horizontally fixed and horizontally mounted on the upper end portion thereof. Yes. The guide bar (20) is the same metal plate as the handle rod receiving cylinder (17) and is welded to the connection state of the both receiving cylinders (17), but is substantially the same as the base plate (16). A part of the flange piece (20a) that has the same planar contour shape and projects in the same U shape so as to correspond to the flange piece (16a) of the base plate (16) from the middle is provided with a feed switch (12). A starting hole (21) for starting operation rod is formed. The starting operation rod (22) of the power supply switch (12) is inserted into the receiving hole (21).

(23) is a pair of opposing fixing nuts welded from the inside to the mid-height position of the handle rod receiving cylinder (17), and is screwed and fastened to the fixing nut (23) so as to be able to advance and retract from the inside. The tip of the butterfly bolt (24) pushes the handle rod (25) into a retaining state, but the butterfly bolt (24) is screwed to remove the handle rod (25) from the receiving tube (17). It can also be extracted upwards from.

Further, as suggested by another use situation of FIG. 10, the horizontal starting operation rod receiving guide bar (20) of the handle rod receiving cylinder (17) remaining after extracting the handle rod (25). It is also possible to heat the electromagnetic induction heater (A) by pressing it against the disk plate from above the waterproof sheet described later.

In that case, since the butterfly bolt (24) is adopted, the pivoting operation can be performed conveniently and directly with one hand without using a special rotating tool. The butterfly bolt (24) and the fixing nut are also provided. (23) is installed on the inside of the handle rod receiving tube (17) and does not protrude outside the receiving tube (17). Even if the electromagnetic induction heater (A) falls down, There is no possibility of damaging a waterproof sheet described later.

The handle rod (25) is bent from the same metal pipe as the receiving tube (17) into an elongated inverted U shape having a certain height (H2) (for example, about 830 mm) as shown in FIG. The lower portions of the both ends of the separation are inserted into the pair of the receiving cylinders (17) so as to be freely inserted and removed from above, and then fixed in a state of being prevented from being detached by pressing the butterfly bolt (24).

In the installed state where the handle rod (25) is inserted into the receiving tube (17) and is vertically suspended, the upper end portion of the handle rod (25) forming the bent halfway portion of the inverted U-shape serves as a grip portion (25a). Is at a ground level (H3) (for example, about 930 mm) that can be held comfortably while standing.

(26) is a horizontal starting operation rod receiving guide bar that is fixedly mounted in a mid-height position lowered by a certain distance (D) (for example, about 100 mm) from the grip portion (25a) of the handle rod (25). The horizontal starting operation rod receiving guide bar (20) on the side of the handle rod receiving cylinder (17) is composed of the same metal plate with the same planar contour shape, and a part protruding from the middle into a U-shape. The flange piece (26a) is also provided with a receiving hole (27) for the starting operation rod (22).

And the receiving hole (27) of the starting operation rod receiving guide bar (26) in the handle rod (25) and the receiving hole of the starting operation rod receiving guide bar (20) in the handle rod receiving cylinder (17). The start operation rod (22) having the same height (length) (H4) (about 830 mm exemplified above) as the handle rod (25) is passed through the vertical pair with (21). Yes.

That is, the starting (ON) operation rod (22) of the power supply switch (12) is supported by the upper and lower pairs of the receiving guide bars (26) and (20) so as to be able to move up and down stably. 12) Positional relationship that can accurately contact the surface (upper surface) of 12) and can be pushed down by the fingertip of one hand holding the grip portion (25a) of the handle rod (25) at the upper end of the activation operation rod (22). It is in.

Incidentally, since some of the flange pieces (26a) (20a) protruding from the middle of the starting operation bar receiving guide bar (26) (20) have a U-shape in plan view, they should be electromagnetic. Even if the induction heater (A) falls down, there is no possibility that the waterproof sheet is damaged by the flange pieces (26a) (20a).

The portable electromagnetic induction heater (A) is used for laying a waterproof sheet (28) on a waterproof construction surface (M), for example, a roof concrete slab on a flat roof as a waterproof construction surface (M). In the construction of the waterproof sheet (28), as shown in FIGS. 11 and 12, a conductive metal disk plate (on the surface of which a hot-melt adhesive layer (29) made of a thermoplastic resin is laminated and integrated) A large number of 30) are attached and fixed to the waterproof construction surface (M) by anchor bolts (31) or the like in a distributed state assigned in a predetermined manner.

On the other hand, a waterproof sheet (28) such as a vinyl chloride sheet is prepared and prepared in a size / planar contour corresponding to the waterproof construction surface (M), and the disk plate (30) is formed on the entire waterproof construction surface (M). The electromagnetic induction heater (A) is pressed against the disk plate (30) from above the waterproof sheet (28).

The pressing operation must be performed for each of the disk plates (30) distributed in a scattered manner. In this case, the electromagnetic induction is performed while maintaining an easy posture standing on the waterproof construction surface (M) as an operator. While holding the grip part (25a) of the handle rod (25) standing tall from the body (10) of the heater (A) with one hand, it can be securely pressed and held. The start (on) operation rod (22) of the power supply switch (12) can be pushed down with the fingertip of one hand to supply power to the electromagnetic induction heating coil (not shown), as in the prior art described at the beginning. There is no need to kneel and do the heating.

In any case, if power is supplied to the electromagnetic induction heating coil of the electromagnetic induction heater (A), the heating coil is excited by an alternating current, and eddy current is generated in the disk plate (30) by the electromagnetic induction action of the generated magnetic field. Flows. Joule heat is generated by the eddy current, the disk plate (30) itself generates heat, and the waterproof adhesive sheet (28) is bonded and integrated to the disk plate (30) by the melted adhesive layer (29). It will be.

During the heating operation of the electromagnetic induction heating coil by the start (on) operation of the power supply switch (12), this can be known by lighting the display lamp (13) in the electromagnetic induction heater (A), and the prediction When the set heating (power supply) time (for example, about 1 to 2 seconds) elapses and the indicator lamp (13) is turned off, the disc plate (30 immediately after the waterproof sheet (28) is bonded) ), A separate self-supporting crimping jig (W) is placed, and the adhesion of the waterproof sheet (28) to the disk plate (30) is kept stable and strong by the pressing force as a paperweight. .

As shown in FIGS. 13 and 14, the above-mentioned crimping jig (W) can be carried while keeping the posture in which the operator stands from the center of the metal disc (32) having a large mass that becomes a weight (for example, about 950 g). It is equipped with a support bar (33) that hangs tall up to a certain height (H5) (for example, about 750 mm), and the upper end of the support bar (33) can be used as a hand (34) so that it can be carried with one hand. Therefore, the crimping operation subsequent to the pressing heating operation by the electromagnetic induction heater (A) can be easily performed in a standing posture without kneeling on the ground.

In that case, in the crimping jig (W) of the illustrated embodiment, the support rod (33) is a fixed length (height) steel rod having male screws at both upper and lower ends, and a litter (34) at the upper end thereof. The metal eye nut is detachably screwed and fastened, and the lower end of the iron bar is also detachably screwed to the fixing nut (35) welded to the center of the metal disk (32). It is designed to maintain a stable and independent state. The total weight is about 1.5 kg as an example, but it can be disassembled and packed.

(10)-Body (11)-Top (top lid)
(12) ・ Power switch (13) ・ Indicator lamp (14) ・ Silicone rubber (15) ・ Case (16) ・ Base plate (16a) (20a) (26a) ・ Flange piece (17) ・ Handle for handle rod (18) ・ Nut (19) ・ Fixing bolt (20) (26) ・ Accepting guide bar for starting operation rod (21) (27) ・ Accepting hole for starting operation rod (22) ・ Starting rod (23) ・ Fixing Nut (24), butterfly bolt (25), handle rod (28), waterproof sheet (29), adhesive layer (30), disk plate (31), anchor bolt (32), metal disc (33), support rod (34) ・ Linger (35) ・ Fixing nut (A) ・ Electromagnetic induction heater (C1) ・ Primary cable (C2) ・ Secondary cable (M) ・ Waterproof construction surface (T) ・ High frequency electromagnetic induction heating device (W) ・ Pressure Fixing jig

Claims (3)

A surface adhesive layer ( 30) of a conductive disk plate (30) that is connected to an electromagnetic induction heating device (T) through a cable (C2) of a required length and is fixedly attached to a waterproof construction surface (M) in advance. 29) is melted by electromagnetic induction heating action from above the waterproof sheet (28) stretched in a covering state, and the waterproof sheet (28) is bonded and integrated to the conductive disk plate (30) . An electromagnetic induction heater (A) for performing
A cylindrical vessel (10) containing the electromagnetic induction heating coil;
A feed switch (12) exposed from the upper surface (11) of the vessel (10);
A base plate (16) mounted and fixed in a state of crossing the diameter line of the upper surface (11),
A pair of opposed handle rod receivers (17) integrally suspended from the base plate (16) by a certain height (H1);
An accepting guide bar (20) for starting operation rods of the feeding switch (12) horizontally fixed to the upper ends of the two receiving cylinders (17);
A handle rod (25) in which the lower ends of both ends of the metal pipe bent into an elongated inverted U-shape are inserted and fixed to the pair of receiving tubes (17) facing each other so as to be freely detachable from above.
The midway height that is lowered by a certain distance (D) from the upper end portion that is the bent grip portion (25a) at the ground height (H3) that can be operated by the hand while the operator is standing in the handle rod (25). An accepting guide bar (26) for starting operation rods of the feeding switch (12) horizontally fixed to the vertical position;
An activation operation rod (22) of the power supply switch (12) that is vertically passed through a pair of upper and lower of the activation operation rod reception guide bar (26) and the activation operation rod reception guide bar (20). )
One hand holding the bent grip portion (25a) of the handle rod (25) so that the operator presses the electromagnetic induction heater (A) from above the waterproof sheet (28) to the conductive disk plate (30). A portable electromagnetic induction heater for waterproof sheet construction, characterized in that it can be heated by depressing the starting operation rod (22) of the power supply switch (12) with a fingertip. The U-shaped flange pieces (26a) and (20a) in plan view located in a mutually corresponding position are partially formed from the upper starting operation rod receiving guide bar (26) and the lower starting operation rod receiving guide bar (20). And overhang,
The protruding flange pieces (26a) and (20a) were respectively formed with opening holes (27) and (21) for starting operation rods, and passed through the receiving holes (27) and (21) from above to stand upright. The portable electromagnetic induction heater for waterproof sheet construction according to claim 1, characterized in that the lower end portion of the start operation rod (22) is set in contact with the surface of the power supply switch (12) . Weld the fixing nuts (23) from the opposite inside to the mid-height position of the handle cylinders (17) for both handle rods,
The handle rod (25) is pressed into the retaining nut (23) from the receiving tube (17) by the tip of the butterfly bolt (24) that is screwed and fastened to the fixing nut (23) from the inside. The portable electromagnetic induction heater for waterproof sheet construction according to claim 1.

Images