JP4624872B2 - Tarpaulin welding tool - Google Patents

Description

  The present invention relates to a waterproof sheet welding tool used for bonding a waterproof sheet laid on a rooftop of a building such as a rooftop, a veranda or a pool with a welding agent.

  When a waterproof layer is formed by laying a synthetic resin waterproof sheet on the roof of a structure such as a rooftop, a veranda, or a pool, for example, a flat plate or a L-shaped section made of a synthetic resin-coated steel plate whose surface is coated with a synthetic resin A sheet joining piece such as a sheet is fixed to a required part of the housing, and a waterproof sheet is laid thereon, and a required portion of the waterproof sheet and the sheet joining piece and the side edges of the waterproof sheet are joined together by a welding agent. Has been made. As an example of the joining method, carry a dish-like container containing a small amount of the welding agent, attach the welding agent to the hair bundle using a brush, and place it between the required portions or the corners of the side edges. Are inserted, pressed and brought into close contact with each other.

  However, such a method of carrying a brush and a container in each case is complicated, and since the container is opened, the welding agent is likely to evaporate, which is also a problem in terms of the environment and the health management of workers. There is.

Therefore, to solve this problem, as shown in FIGS. 6 and 7, the tube 13 is inserted into the root portion of the hair bundle 14, and the other end is connected to the mouth of the polybin 16 filled with the welding agent. There is known a welding tool 10 (Patent Document 1) in which a brush and a brush are integrated.
Japanese Utility Model 04-70164

  However, in the welding tool 10 described above, since the hair bundle 14 and the polybin 16 are connected by the straight tube 13, for example, the side edges of the waterproof sheets S and S laid on a flat surface as shown in FIG. In the case of joining, it is necessary to incline the polybin 16 to an angle close to the horizontal, and when the welding agent filled in the container decreases, the welding agent may not easily flow out.

  Moreover, since the welding tool 10 is what hold | grips the polybin 16 with a hand and presses it and makes an internal welding agent flow out, for example, the side edges of a long waterproof sheet are joined continuously. In such a case, the pumping operation has to be repeated, and depending on the pressure, the amount of outflow is different and it is easy to cause coating unevenness. Further, since the polybin 16 is usually made of a soft and slippery material such as polyethylene, the workability is poor when working with gloves such as gloves.

  On the other hand, as shown in FIG. 7, an L-shaped sheet joining piece J is fixed to the corner of the flat field and the rising wall, and the waterproof sheet S extends from the top to the vicinity of the corner along the rising wall. In the case where the overlapping portion between the waterproof sheet S and the sheet joining piece J is welded and joined, in the conventional welding tool 10, since the tube 13 has a straight shape, the hair bundle 14 is used as the overlapping portion. In some cases, it was difficult to plug in and work was not possible.

  In order to solve such problems, the present invention can efficiently apply coating unevenness regardless of a place such as a flat place or a rising wall when welding a waterproof sheet laid on a structural body such as a rooftop, a veranda or a pool. Therefore, an object of the present invention is to provide a waterproof sheet welding tool that can be welded to a small amount.

  In order to solve the above problems, the inventor can supply the welding agent continuously to the root of the hair bundle attached to the tip of the tube in a conventional welding tool by bending the straight tube into a square shape. It was thought that the above problems could be solved by adopting such a structure, and as a result of intensive experiments on the achievable structure, the present invention was achieved.

That is, in the invention according to claim 1, the brush is supported on the side surface of the container for filling the welding agent, and the hollow portion that communicates with the mouth of the flat cylindrical body that sandwiches the hair bundle inside the handle portion of the brush. A gist of a waterproof sheet welding tool, wherein the hollow portion and the container communicate with each other through a connecting pipe, and the handle portion is bent in a square shape toward a container at a required position in the longitudinal direction. And

  The gist of the invention according to claim 2 is the waterproof sheet welding tool according to claim 1, wherein the flat cylindrical body is closely fitted to the handle portion in a removable manner.

According to the present invention, the brush is supported on the side surface of the container for filling the welding agent, and the handle portion of the brush is bent in a square shape toward the container side. When the bundle is inserted, the container can be placed at a high position, so that the welding agent filled therein naturally flows into the hair bundle by gravity, and the welding agent oozes continuously from the hair bundle. Thus, the welding workability can be improved.

  In addition, since the hollow portion is provided inside the handle portion, even when the container is pushed too much, the welding agent is once stored in the hollow portion and then flows out from the hair bundle, thereby reducing coating unevenness. There is an effect that can be done.

In addition, for the waterproof sheet that is laid and extended to the vicinity of the corner of the rising wall, the hair bundle is made of the waterproof sheet because the handle is bent in a square shape toward the container at the required position in the longitudinal direction. It can also be inserted into the gap in the vertical direction, enabling welding work that has been difficult in the past.

  Furthermore, since the brush is supported on the side surface of the container for filling the welding agent, it is possible to work by grasping the handle portion of the brush and workability is good.

  Moreover, according to this invention, it is preferable that the flat cylindrical body which pinches | interposes the hair | bristle bundle in a brush, and the front-end | tip part of the handle | pattern part were closely fitted by the aspect which can be attached or detached. By doing so, the brush, which is a consumable item, can be replaced, and the cost is excellent.

  FIG. 1 is a perspective view showing a welding tool 1 according to the present invention, and FIG. 2 is a sectional view and a front view thereof. (A is a sectional view, b is a front view)

  In the welding tool 1 according to the present invention, the brush 2 is supported on the side surface of a solvent-filled container 6 by a support material 7. The brush 2 here is constituted by a handle 3 and a hair bundle 4 attached to the tip thereof.

  The handle 3 is made of a metal hollow body, and is bent in a square shape toward the container 6 at a required position in the longitudinal direction. As shown in FIG. 2A, a hollow portion 3 a is formed inside the handle portion 3, and one end of the hollow portion 3 a communicates with the mouth portion of the flat cylindrical body 4 a that sandwiches the hair bundle 4. The tip 3b of the handle 3 and the flat cylindrical body 4a are connected in a close fitting state. The flat cylindrical body 4a is formed by winding a metal plate around the base of the hair bundle 4 and fixing it with nails.

  A tube portion 3c extends from the other end of the hollow portion 3a of the handle portion 3 toward the container 6 side from the hollow portion 3a, and is connected to the tube 6c extending from the plug portion 6a of the container 6. Thus, the connecting pipe 5 is formed. By this connecting pipe 5, the inside of the container 6 and the cavity 3a are in communication.

  The container 6 is a flexible container (polybin) made of polyethylene, and presses the body part 6b to cause the welding agent filled therein to flow out from the pipe 6c.

  The support member 7 is made of a loop-shaped wire, and is wound around two portions of the body 6 b and the stopper 6 a of the container 6, and the end thereof is welded to the handle 3 of the brush 2. Here, the upper support member 7a wound around the stopper portion 6a is in a fastened state, and the lower support member 7b wound around the trunk portion 6b is in a loosely attached state. By setting it as such a state, the trunk | drum 6b of the container 6 can be rotated freely and the trunk | drum 6b can be attached or detached.

The present invention is characterized in that the handle 3 of the brush 2 is bent in a square shape toward the container 6 at a required position in the longitudinal direction . By adopting such a shape, the container 6 can be placed at a high position when the hair bundle 4 is inserted with respect to the waterproof sheet laid on a flat surface. It is possible to improve the welding workability. In addition, for the waterproof sheet laid to extend to the vicinity of the corner along the rising wall, the hair bundle 4 can be inserted into the overlapping portion, which has been difficult to insert conventionally, thereby enabling welding. be able to.

  The bending angle θ is preferably 60 ° to 85 °. If it is less than 60 °, it is necessary to lay the container 6 close to the horizontal when welding to a waterproof sheet laid on a flat surface, and it becomes difficult for the container 6 to flow out when the welding agent filled in the interior decreases. Harm sex. Further, for the waterproof sheet laid on the rising wall so as to extend to the vicinity of the corner of the entrance, there is a case where the hair bundle 4 cannot be inserted between the waterproof sheet and the corner of the rising wall because the handle portion is almost straight. is there. On the other hand, when it exceeds 85 °, when the waterproof sheet laid on the flat field is welded and joined, the tip 3b of the handle 3 tends to push up the waterproof sheet beyond the horizontal, which is not preferable from the viewpoint of workability.

  The required portion where the handle portion 3 is bent, that is, the bending fulcrum is not particularly limited as long as it can be designed, but is preferably an arbitrary portion between the tube portion 3c and the flat cylindrical body 4a. . In addition, the square shape in the present invention includes, for example, a curved shape and a U shape.

  In the present invention, the brush 2 needs to be supported on the side surface of the container 6. By being supported, the brush 2 and the container 6 are integrated, and when the welding operation is not performed, the container 6 is placed with the bottom face down, and when the welding operation is performed, the handle portion 3 is held. It is convenient to work. In addition, by gripping the handle portion 3, there is little slipping even when gloves such as gloves are worn, and the workability is excellent.

  The support member 7 is preferably made of a loop-shaped wire. However, the support member 7 is not limited to the material and the shape as long as it can be supported.

  In the present invention, the cavity 3 a is formed inside the handle 3, and the cavity 3 a and the container 6 need to communicate with each other via the connecting pipe 5. By taking such a structure, the welding agent filled in the container 6 can continuously flow out to the tip of the hair bundle 4 through the connecting pipe 5 and the cavity 3a. At this time, the cavity 3a is considered to play a buffering role. That is, even when the container 6 is pushed too much, the welding agent is once stored therein, and the air pressure in the cavity 3a increases, whereby the pressure can push out the welding agent to the hair bundle 4 little by little. . There is no restriction | limiting in particular about the volume of the cavity part 3a, and it will not be a problem as long as the flow of a solvent is not prevented. There is no particular limitation on the shape of the hollow portion 3a. In FIGS. 1 and 2, the shape extended to the root of the inside of the handle portion 3 is illustrated, but there is no problem in expanding in this way.

  The material constituting the handle 3 is preferably made of a metal such as stainless steel, tinplate, or brass. By adopting a metal, sufficient rigidity can be ensured even when a cavity is provided in the interior or when it is bent into a square shape, and the durability is excellent. However, the material applied here is not limited to metal. For example, if it is necessary to mass-produce, synthetic resin such as polyethylene capable of injection molding can be adopted.

  In this invention, it is preferable that the front-end | tip part 3b in the handle | pattern part 3 is closely fitted with the flat cylindrical body 4a in the hair | bristle bundle 4 in the aspect which can be attached or detached. Of course, the tip 3b of the handle 3 and the flat cylindrical body 4a in the hair bundle 4 can be welded and fixed. For example, as shown in FIG. 3, the tip 3b and the flat cylindrical body 4a are fixed. A plurality of projecting portions t are provided at the meshing portions of each of the meshing portions so that they can be fitted to each other, and after they are meshed, the sealing material 8 is embedded between the corners so that they can be attached and detached. This is preferable. By setting it as such a structure, the hair | bristle bundle 4 which is consumables can be replaced | exchanged and it becomes the thing excellent in economical efficiency.

  At this time, the sealing material 8 is more preferably a resin composition in which a solvent such as tetrahydrofuran (THF) is dissolved in a vinyl chloride resin and mixed. By using the sealing material 8 made of such a resin composition, the sealing material 8 absorbs the welding agent and swells at the time of welding work, so that sufficient sealing performance between the tip 3b and the flat cylindrical body 4a is obtained. This is because the solvent component is volatilized and the sealing material 8 contracts during non-working, so that the flat tubular body 4a can be easily pulled out and is more excellent in detachable workability.

  In addition, in order to adjust the outflow of the welding agent at the end of the hair bundle 4 at the inner side of the flat cylindrical body 4a, for example, a flow rate adjusting member 4b in which a plurality of pores are provided in wood may be attached.

  Next, an embodiment of a welding operation method using the welding tool 1 according to the present invention will be described with reference to FIGS. 4 and 5.

  FIG. 4 shows a mode in which waterproof sheets S, S are laid on a substantially horizontal flat surface so as to overlap with side edges, and the side edges are welded and joined together.

  First, in welding, the bottom part of the container 6 in the welding tool 1 according to the present invention is inclined obliquely upward, and the hair bundle 4 is inserted into the gap between the substantially horizontal waterproof sheets S and S. In this state, the container 6 is pushed once to pour out the welding agent into the cavity 3a. Then, since the container 6 is at a high position, the welding agent naturally oozes from the tip of the hair bundle 4 through the connecting pipe 5 and the cavity 3a. In this state, by moving through the gap between the waterproof sheets S, S, the welding agent can be continuously applied on the waterproof sheet S, and can be efficiently and uniformly welded.

  Next, a method of welding a waterproof sheet laid near the upper corner of the rising wall will be described with reference to FIG. FIG. 5 shows a state in which an L-shaped sheet joining piece J is fixed to the entrance corner of the flat field and the rising wall, and the waterproof sheet S is extended and laid along the rising wall to the vicinity of the entrance corner. It is.

  First, as in the method shown in FIG. 4, the bottom of the container 6 of the welding tool 1 is tilted obliquely upward, and the container 6 is pushed once to cause the welding agent to exude to the hair bundle 4. Next, as shown in FIG. 5, the welding tool 1 is tilted back until the bottom of the container 6 becomes substantially horizontal, and then the hair bundle 4 is pressed onto the sheet joining piece J and further pushed upward. Then, the sheet is inserted into the gap between the waterproof sheet S and the sheet joining piece J. After the insertion, this time the container 6 is pressed and the welding agent flows out from the hair bundle 4. In this way, it is possible to weld the waterproof sheet S even at a rising portion near the corner where it has been difficult with a welding tool having a straight handle. Further, by performing the pumping operation, welding can be performed even on a long side edge.

It is a perspective view which shows the waterproof sheet welding tool of this invention. (A) is sectional drawing which shows the waterproof sheet welding tool of this invention, (b) is a front view which shows the waterproof sheet welding tool of this invention. It is an expanded sectional view which shows the fitting part of the handle | pattern part and flat cylindrical body in the waterproof sheet welding tool of this invention. It is sectional drawing which shows the embodiment of the welding work method using the waterproof sheet welding tool of this invention. It is sectional drawing which shows the embodiment of the welding work method using the waterproof sheet welding tool of this invention. It is sectional drawing which shows the embodiment of the welding work method using the conventional waterproof sheet welding tool. It is sectional drawing which shows the embodiment of the welding work method using the conventional waterproof sheet welding tool.

DESCRIPTION OF SYMBOLS 1 Welding tool 2 Brush 3 Handle | pattern part 3a Cavity part 3b Tip part 3c Pipe part 4 Hair bundle 4a Flat cylindrical body 4b Flow adjustment member 5 Connection pipe 6 Container 6a Plug part 6b Trunk part 6c Pipe 7 Support material 8 Sealing material S Waterproof sheet J Sheet joining piece t Protrusion

Claims (2)

A brush is supported on the side surface of the container for filling the welding agent, and a hollow portion is formed in the handle of the flat tubular body that sandwiches the hair bundle inside the handle portion of the brush. A waterproof sheet welding tool, wherein the handle is bent in a square shape toward the container at a required position in the longitudinal direction. The waterproof sheet welding tool according to claim 1, wherein the flat cylindrical body is tightly fitted in a manner detachable from the handle.

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