Waterproof sheet installation aid and waterproof sheet installation method

Abstract

To provide a waterproof sheet installation auxiliary tool and a waterproof sheet installation method capable of suppressing the occurrence of wrinkles during installation of a waterproof sheet. [Solution] A waterproof sheet installation auxiliary jig 20 assists in the attachment work of attaching a waterproof sheet 6 to a wall 10. The waterproof sheet installation auxiliary jig 20 includes a handle portion 21 and an engagement portion 30 that engages with a wall sheet portion 6B of the waterproof sheet 6 that is attached to the wall 10. The handle portion 21 has a base portion 22 including a contact portion 23 that contacts a floor 2 connected to the wall 10, and a lever portion 28 extending from the base portion 22. The engagement portion 30 has an attachment portion rotatably attached to the base portion 22, an extension portion extending from the attachment portion, and a claw portion 36 provided on the extension portion that is inserted into an upper portion of the wall sheet portion 6B.

Description

[Technical field]

[0001] The present disclosure relates to a waterproof sheet installation auxiliary tool and a waterproof sheet installation method. [Background technology]

[0002] A tool is known for laying a waterproof sheet on a wall rising from the floor on the roof of a building. The tool is used to lay the waterproof sheet so as to prevent wrinkles from occurring. For example, Patent Document 1 discloses a waterproof sheet installation auxiliary tool (called an installation tool in Patent Document 1). The waterproof sheet installation auxiliary tool in this document includes a base and a pressing part that is arranged to rotate relative to the base. The pressing part has an elastic body. The pressing part presses the waterproof sheet against the wall via the elastic body, thereby preventing wrinkles from occurring after pressing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-129719 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is room for improvement in waterproof sheet installation auxiliary jigs and waterproof sheet installation methods with respect to preventing the occurrence of wrinkles in the waterproof sheet when it is installed. [Means for solving the problem]

[0005] (1) A waterproof sheet installation auxiliary jig that solves the above-mentioned problems is a waterproof sheet installation auxiliary jig that assists in the work of attaching a waterproof sheet to a wall, and includes a handle portion and an engagement portion provided on the handle portion that engages with a wall sheet portion of the waterproof sheet to be attached to the wall, the handle portion having a base portion including a contact portion that contacts a floor connected to the wall, and a lever portion extending from the base, and the engagement portion has an attachment portion that is rotatably attached to the base, an extension portion extending from the attachment portion, and a claw portion provided on the extension portion that is inserted into an upper portion of the wall sheet portion.

[0006] With this configuration, when force is applied to the lever, the handle rotates around the contact part as a fulcrum and the engagement part moves upwards, causing the waterproof sheet engaging with the engagement part to stretch, thereby reducing wrinkles in the waterproof sheet stretched over the wall.

[0007] (2) The waterproof sheet installation auxiliary tool of (1) above further includes a biasing portion that biases the engaging portion so as to move the engaging portion away from the lever portion. According to this configuration, the engaging portion is biased against the lever portion, so that the engaging portion can be strongly engaged with the wall sheet portion.

[0008] (3) In the waterproof sheet installation auxiliary jig of (2) above, a first regulating portion is further provided that regulates the position of the engaging portion relative to the lever portion so that the angle between the lever portion and the engaging portion is equal to or less than a first angle, and the first regulating portion is configured to be able to release the position regulation of the engaging portion relative to the lever portion.

[0009] According to this configuration, the position of the engaging part can be maintained in a state where the angle between the lever part and the engaging part is equal to or less than the first angle. This makes it difficult for the claw part of the engaging part to come into contact with the wall sheet part. This reduces the chance of the claw part of the engaging part getting caught on the wall sheet part due to carelessness on the part of the worker, making it easier to position the waterproof sheet installation auxiliary jig at a position a specified distance away from the wall.

[0010] (4) The waterproof sheet installation auxiliary jig of (3) above further includes a second regulating portion that regulates the position of the engaging portion relative to the lever portion so that the angle between the lever portion and the engaging portion is equal to or smaller than a second angle that is larger than the first angle. With this configuration, the force applied to the lever portion can be easily transmitted to the engaging portion.

[0011] (5) The waterproof sheet installation auxiliary jig of any one of (2) to (4) above further comprises a support member disposed between the wall and the lever portion so that the distance between the wall and the lever portion does not become shorter than a predetermined distance when the waterproof sheet installation auxiliary jig is in a temporarily fastened state, the temporarily fastened state being a state in which the claw portion is inserted into the wall sheet portion of the waterproof sheet and the wall sheet portion is pulled. According to this configuration, the support member maintains the distance between the wall and the lever portion at the predetermined distance, so that the temporarily fastened state of the waterproof sheet installation auxiliary jig can be maintained.

[0012] (6) In the waterproof sheet installation auxiliary tool of (5) above, the support member is rotatably attached to the lever portion or detachably attached to the lever portion. With this configuration, since the support member is attached to the lever portion, it is possible to prevent the support member from being lost.

[0013] (7) In the waterproof sheet installation auxiliary tool of any one of (1) to (6) above, the contact portion of the base is configured to have a curved surface. With this configuration, it is possible to prevent traces of the waterproof sheet installation auxiliary tool from being left on the floor sheet portion.

[0014] (8) A waterproof sheet installation method that solves the problem is a waterproof sheet installation method for attaching a waterproof sheet to a wall, and includes a first step of temporarily fastening a wall sheet portion, which is a part of the waterproof sheet, in contact with a wall rising from a floor using a waterproof sheet installation auxiliary tool described in any one of (1) to (7) above, and a second step of fixing the wall sheet portion to the wall.

[0015] According to this configuration, since a waterproof sheet installation auxiliary jig is used in the construction of attaching a waterproof sheet to a wall, the occurrence of wrinkles can be suppressed when the waterproof sheet is attached to a wall. Effect of the Invention

[0016] According to the waterproof sheet installation auxiliary tool of the present disclosure, the occurrence of wrinkles in the waterproof sheet can be suppressed when the waterproof sheet is installed. According to the waterproof sheet installation method of the present disclosure, the occurrence of wrinkles in the waterproof sheet can be suppressed when the waterproof sheet is installed. [Brief description of the drawings]

[0017] [Figure 1] This is a front view of a balcony wall when a waterproof sheet installation auxiliary jig is placed on the wall. [Diagram 2] This shows a person working on putting up a waterproof sheet on a balcony wall. [Diagram 3] FIG. 2 is a perspective view of a waterproof sheet installation auxiliary jig. [Figure 4] FIG. 4 is an enlarged perspective view of part C in FIG. [Diagram 5] 2 is a cross-sectional view of the wall taken along line BB in FIG. 1, showing the first step of the installation work using the waterproof sheet installation auxiliary tool. [Figure 6] 1. This is a cross-sectional view of the wall taken along line BB in FIG. 1, showing the second step of the installation work using the waterproof sheet installation auxiliary tool. [Figure 7] 1. This is a cross-sectional view of the wall taken along line BB in FIG. 1, showing the third step of the installation work using the waterproof sheet installation auxiliary tool. [Figure 8] 1. This is a cross-sectional view of the wall taken along line BB in FIG. 1, showing the fourth step of the installation work using the waterproof sheet installation auxiliary tool. [Figure 9] FIG. 13 is a diagram showing a modified example of a waterproof sheet installation auxiliary jig. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] A waterproof sheet installation auxiliary tool 20 and a waterproof sheet installation method of the present embodiment will be described with reference to Figures 1 to 8. The waterproof sheet installation auxiliary tool 20 is a tool for assisting the work of attaching a waterproof sheet 6 to a wall 10.

[0019] The wall 10 for which the waterproof sheet installation auxiliary tool 20 is used in installing the waterproof sheet 6 is a wall that is arranged to rise from the floor 2 of a building. The wall 10 to which the waterproof sheet 6 is installed is an outdoor wall. Examples of outdoor walls 10 to which the waterproof sheet 6 is applied include veranda walls, balcony walls, and rooftop parapets. In this embodiment, the wall is a wall that rises from the floor 2 of the balcony 1.

[0020] In this embodiment, the floor 2 of the balcony 1 is composed of a floor unit 3. The floor unit 3 is disposed on the lower frame at the bottom of the balcony 1. The floor unit 3 may be disposed on the lower frame via a concrete member 7. The floor unit 3 includes a gradient insulation material 4, a steel plate 5 disposed on the gradient insulation material 4, and a waterproof sheet 6 attached to the steel plate 5. The upper surface of the gradient insulation material 4 is inclined relative to the horizontal. The waterproof sheet 6 is extended so as to cover the lower part of the wall 10 of the balcony 1. That is, the waterproof sheet 6 includes a floor sheet portion 6A and a wall sheet portion 6B. In one continuous waterproof sheet 6, the floor sheet portion 6A and the wall sheet portion 6B are provided. The wall sheet portion 6B protrudes from the gradient insulation material 4.

[0021] The wall 10 includes a frame 11, plywood 12, and exterior cladding 13. The exterior cladding 13 is attached to the frame 11 with mounting brackets.

[0022] The exterior material 13 is disposed on the outer surface 11A and the inner surface 11B of the frame 11. In Figs. 5 to 8, the exterior material 13 on the outer surface 11A is omitted. The inner surface 11B of the frame 11 indicates the surface facing the building body. The outer surface 11A of the frame 11 indicates the opposite side to the inner surface 11B. The exterior material 13 covers an area on the inner surface 11B of the frame 11 from a position of a predetermined height upward. On the inner surface 11B of the frame 11, a plywood 12 is provided in an area from a position of a predetermined height to the lower end. The plywood 12 is located below the exterior material 13. The plywood 12 is fixed to the frame 11 by metal fittings, screws or bolts. A water-repellent material and a sealing material may be provided between the plywood 12 and the exterior material 13 in the vertical direction.

[0023] As described above, the waterproof sheet 6 includes the wall sheet portion 6B and the floor sheet portion 6A. The wall sheet portion 6B is a portion of the waterproof sheet 6 that is attached to the wall 10. The floor sheet portion 6A is a portion of the waterproof sheet 6 that is attached to the floor 2. In this embodiment, the floor sheet portion 6A is provided via the steel plate 5 on the gradient insulation material 4 of the floor unit 3 that constitutes the floor 2, as described above.

[0024] [Waterproof sheet installation auxiliary tool] As shown in FIGS. 1 and 2, the waterproof sheet installation auxiliary jig 20 assists the work of attaching the waterproof sheet 6 to the wall 10.

[0025] 3, the waterproof sheet installation auxiliary tool 20 includes a handle portion 21 and an engagement portion 30 provided on the handle portion 21. The waterproof sheet installation auxiliary tool 20 may further include a biasing portion 40. The waterproof sheet installation auxiliary tool 20 may further include a first restricting portion 41 and a second restricting portion 51. The waterproof sheet installation auxiliary tool 20 may further include a support member 60.

[0026] [Handle section] The handle portion 21 has a base portion 22 and a lever portion 28 extending from the base portion 22. A force is applied to the handle portion 21. The handle portion 21 transmits the force applied to the handle portion 21 to the engagement portion 30. The engagement portion 30 moves based on the force applied to the handle portion 21.

[0027] The base 22 includes a contact portion 23. The base 22 further includes a first portion 22A and a second portion 22B. The first portion 22A is a portion to which the lower end of the lever portion 28 is attached. The second portion 22B is a portion to which the attachment portion 31 of the engagement portion 30 is attached. The contact portion 23 is a portion that contacts the floor 2 that is connected to the wall 10. The first portion 22A and the second portion 22B are located above the contact portion 23. The second portion 22B is located at a position horizontally spaced apart from the first portion 22A. The second portion 22B may be located at a higher position than the first portion 22A or may be located at a lower position than the first portion 22A. Due to such a positional relationship between the first portion 22A, the second portion 22B, and the contact portion 23, when the first portion 22A is lowered with the contact portion 23 in contact with the floor 2, the second portion 22B is raised.

[0028] A specific example of the base 22 will be described. The base 22 includes a bottom 25 including a contact portion 23, and a cross extension portion 26 extending upward from a first end 25A of the bottom 25. The cross extension portion 26 rises so as to cross the bottom 25. The bottom surface of the bottom 25 is configured to be flat. An engagement portion 30 is rotatably provided at the upper end of the cross extension portion 26 via a hinge 39. A lever portion 28 is connected to a second end 25B of the bottom 25 opposite to the first end 25A. In this example, the second end 25B of the bottom 25 corresponds to the first portion 22A. The upper end of the cross extension portion 26 corresponds to the second portion 22B.

[0029] The contact portion 23 is provided near the second end 25B on the bottom surface of the bottom portion 25. The contact portion 23 contacts the floor sheet portion 6A. The contact portion 23 also contacts the floor sheet portion 6A when the wall sheet portion 6B is pulled by the waterproof sheet installation auxiliary jig 20. Specifically, the contact portion 23 contacts the floor sheet portion 6A when the handle portion 21 is tilted by applying force to the lever with the engagement portion 30 engaged with the wall sheet portion 6B. At this time, the floor sheet portion 6A is pressed by the contact portion 23. For this reason, the contact portion 23 is configured not to sink into the waterproof sheet 6.

[0030] Specifically, as shown in Fig. 4, the contact portion 23 is configured to have a curved surface. In one example, the contact portion 23 is configured to have a surface along a circular arc. In the contact portion 23, a corner between the curved surface of the contact portion 23 and the side surface of the contact portion 23 is provided with a chamfered portion 24.

[0031] The lever portion 28 has a grip portion 29 to be gripped. The grip portion 29 is made of plastic, rubber, or cloth. The grip portion 29 may be configured to have a shape that is easy to grip. The grip portion 29 is provided near the tip of the lever portion 28 that is away from the base portion 22. In this embodiment, the lever portion 28 is configured to be longer than the engagement portion 30.

[0032] [Engagement part] The engaging portion 30 engages with the wall sheet portion 6B. The engaging portion 30 has an attachment portion 31, an extension portion 32 extending from the attachment portion 31, and a claw portion .

[0033] The mounting portion 31 is a portion that is rotatably attached to the base portion 22. In this embodiment, the mounting portion 31 is rotatably attached to the cross extension portion 26 of the base portion 22 via a hinge 39. The mounting portion 31 may be rotatably attached to the cross extension portion 26 of the base portion 22 via a shaft and a bearing.

[0034] The extension portion 32 has a first extension portion 33 that extends straight, and a second extension portion 34 that extends from the tip of the first extension portion 33. The second extension portion 34 extends away from the lever portion 28 as it approaches the tip of the second extension portion 34. The second extension portion 34 is configured to gradually become thinner toward the tip. A claw portion 36 is provided at the tip of the second extension portion 34.

[0035] The claw portion 36 is provided on the extension portion 32. In one example, the claw portion 36 is provided at the tip of the extension portion 32. The claw portion 36 is configured to engage with the wall sheet portion 6B.

[0036] The claw portion 36 is configured to be inserted into an upper portion of the wall sheet portion 6B of the waterproof sheet 6 that is attached to the wall 10. Specifically, the claw portion 36 has a plurality of projections 36A each having a pointed tip.

[0037] [Electricity applying part] The biasing portion 40 biases the engagement portion 30 so as to move the engagement portion 30 away from the lever portion 28. In one example, the biasing portion 40 is disposed between a lower portion of the lever portion 28 and a middle portion of the engagement portion 30. The biasing portion 40 is configured by a coil spring. The biasing portion 40 may be configured by a torsion spring. The biasing portion 40 may be configured by a leaf spring.

[0038] [First Regulatory Department] The first restricting portion 41 restricts the position of the engaging portion 30 relative to the lever portion 28 so that the angle A between the lever portion 28 and the engaging portion 30 is equal to or smaller than a first angle A1.

[0039] Even in a state in which the position of the engaging portion 30 relative to the lever portion 28 is restricted by the first restricting portion 41, the biasing portion 40 biases the engaging portion 30 so as to move the engaging portion 30 away from the lever portion 28. Therefore, in a state in which the position of the engaging portion 30 relative to the lever portion 28 is restricted by the first restricting portion 41, the angle A between the lever portion 28 and the engaging portion 30 is maintained at the first angle A1.

[0040] The first restricting portion 41 is configured to be able to release the position restriction of the engaging portion 30 relative to the lever portion 28. Specifically, the first restricting portion 41 includes a hook 42 and a hook engaging portion 43 to which the hook 42 is hooked. One of the hook 42 and the hook engaging portion 43 is provided on the lever portion 28. The other of the hook 42 and the hook engaging portion 43 is provided on the engaging portion 30.

[0041] [Second Regulatory Department] The second restricting portion 51 restricts the position of the engaging portion 30 relative to the lever portion 28 so that the angle A between the lever portion 28 and the engaging portion 30 is equal to or smaller than the second angle A2. The second angle A2 is larger than the first angle A1. The second angle A2 is smaller than the third angle. The third angle is the angle between the lever portion 28 and the engaging portion 30 when the biasing portion 40 is fully extended in the absence of the second restricting portion 51. According to the second restricting portion 51, when the restriction by the first restricting portion 41 is released, the angle A between the lever portion 28 and the engaging portion 30 does not become larger than the second angle A2.

[0042] In one example, the second restricting portion 51 is built into the hinge 39. The second restricting portion 51 includes a sector plate 52 fixed to one rotating body of the hinge 39, and a pin 53 fixed to the other rotating body of the hinge 39. The sector plate 52 restricts the rotation of the hinge 39 by engagement with the pin 53. This limits the angle A between the lever portion 28 and the engagement portion 30 to an angle equal to or smaller than the second angle A2.

[0043] [Support member] The support member 60 is a member disposed between the wall 10 and the lever portion 28. Specifically, the support member 60 is disposed between the wall 10 and the lever portion 28 so that the distance between the wall 10 and the lever portion 28 is not shorter than a predetermined distance (hereinafter, the predetermined wall-lever distance) when the waterproof sheet installation auxiliary jig 20 is in a temporarily fastened state. The temporarily fastened state is a state in which the claw portion 36 is inserted into the wall sheet portion 6B of the waterproof sheet 6, and the wall sheet portion 6B is pulled by the waterproof sheet installation auxiliary jig 20.

[0044] In one example, the support member 60 is rotatably attached to the lever portion 28. The support member 60 has a contact end 61 that contacts the wall 10. Specifically, one end of the support member 60 is rotatably attached to the lever portion 28. The other end of the support member 60 is provided with the contact end 61. The contact end 61 has an elastic friction portion 62. The elastic friction portion 62 is made of rubber. In this example, the wall-to-lever predetermined distance is defined as the distance between the rotation shaft portion of the lever portion 28 and the wall 10.

[0045] <Waterproof sheet installation method> A waterproof sheet installation method for attaching the wall sheet portion 6B of the waterproof sheet 6 to the wall 10 will be described with reference to Figs.

[0046] The waterproof sheet installation method is a method for attaching a waterproof sheet 6 to a wall 10. The waterproof sheet installation method includes a first step and a second step. In the first step, the wall sheet portion 6B is temporarily fastened by a waterproof sheet installation auxiliary jig 20 in a state in which the wall sheet portion 6B is in contact with the wall 10. In the second step, the wall sheet portion 6B is fixed to the wall 10. In the second step, the wall sheet portion 6B is fixed to the wall sheet portion 6B by a tacker 70 with screws.

[0047] In the first step, first, the wall sheet portion 6B of the waterproof sheet 6 is brought into contact with the wall 10 of the balcony 1 so as to extend along the wall. Then, the wall sheet portion 6B is temporarily fixed in place by a waterproof sheet installation auxiliary jig.

[0048] The procedure for temporary fastening using the waterproof sheet installation auxiliary jig 20 will be described below. As shown in FIG. 5, in the first step, the waterproof sheet installation auxiliary jig 20 is placed at a predetermined distance from the boundary between the wall sheet portion 6B and the floor sheet portion 6A.

[0049] 6, in the second step, the wall sheet portion 6B is pulled upward by hand to release the restriction by the first restricting portion 41. Then, the claw portion 36 of the engaging portion 30 is thrust into the upper portion of the wall sheet portion 6B by the force of the biasing portion 40.

[0050] Next, as shown in FIG. 7, in the third step, the lever portion 28 is pulled in a direction away from the wall 10 (hereinafter, the first direction D1). Then, the handle portion 21 rotates with the contact portion 23, which contacts the floor sheet portion 6A, as a fulcrum. At this time, the cross extension portion 26 of the base portion 22 is lifted, and the angle A between the lever portion 28 and the engagement portion 30 is widened. When the lever portion 28 is further tilted, the angle A between the lever portion 28 and the engagement portion 30 is fixed to the second angle A2 by the second regulating portion 51. When the lever portion 28 is pulled in the first direction D1 in this state, the engagement portion 30 further moves upward together with the cross extension portion 26. Then, the upper portion of the wall sheet portion 6B is pulled up by the engagement portion 30. This causes the wall sheet portion 6B to be fully stretched.

[0051] At this time, a restoring force is generated in the wall sheet portion 6B, which tries to return it to its original shape against the stretching. Therefore, the wall sheet portion 6B pulls the engagement portion 30 downward. When the force applied to the lever portion 28 is released, the restoring force of the wall sheet portion 6B pulls the lever portion 28 in a direction approaching the wall 10 (hereinafter, the second direction).

[0052] Therefore, as shown in FIG. 8, in the fourth step, a support member 60 is placed between the wall 10 and the lever portion 28 to resist the restoring force of the wall sheet portion 6B. The support member 60 is placed between the wall 10 and the lever portion 28 when the wall sheet portion 6B is fully stretched. Then, the contact end portion 61 of the support member 60 is pressed against the wall 10 so that the elastic friction portion 62 of the contact end portion 61 is deformed. This fixes the position of the lever portion 28 relative to the wall 10. Therefore, even when the force pulling the lever portion 28 is released, the wall sheet portion 6B is maintained in a state where it is stretched sufficiently and stretched along the wall 10. The worker repeats this operation at predetermined intervals on the wall sheet portion 6B. In this way, the wall sheet portion 6B is stretched on the wall 10 with few wrinkles.

[0053] Thereafter, in a second step, the worker operates the tacker 70 to fix the wall sheet portion 6B to the wall 10 with screws.

[0054] [Operation of this embodiment] The waterproof sheet installation auxiliary jig 20 comprises a handle portion 21 and an engagement portion 30 that engages with the wall sheet portion 6B of the waterproof sheet 6. The handle portion 21 has a base portion 22 including a contact portion 23 that contacts the floor 2, and a lever portion 28 extending from the base portion 22. The engagement portion 30 has a claw portion 36 that is inserted into an upper portion of the wall sheet portion 6B.

[0055] According to this configuration, when a force is applied to the lever portion 28, the handle portion 21 rotates with the contact portion 23 as a fulcrum, and the engagement portion 30 moves upward. This allows the waterproof sheet 6 engaged with the engagement portion 30 to be stretched. This reduces wrinkles in the waterproof sheet 6 stretched over the wall 10. Furthermore, the engagement portion 30 is rotatably mounted on the base portion 22. This makes it difficult for the claw portion 36 to come off the waterproof sheet 6 when the engagement portion 30 moves upward. Therefore, this structure reduces the need to redo the work when the claw portion 36 comes off the waterproof sheet 6.

[0056] [Effects of this embodiment] (1) The waterproof sheet installation auxiliary jig 20 includes a handle portion 21 and an engagement portion 30 that engages with the wall sheet portion 6B of the waterproof sheet 6. The handle portion 21 has a base portion 22 including a contact portion 23 that contacts the floor sheet portion 6A, and a lever portion 28 that extends from the base portion 22. The engagement portion 30 has an attachment portion 31, an extension portion 32 that extends from the attachment portion 31, and a claw portion 36 that is inserted into an upper portion of the wall sheet portion 6B.

[0057] According to this configuration, when force is applied to the lever portion 28, the handle portion 21 rotates with the contact portion 23 as a fulcrum and the engagement portion 30 moves upward. This causes the waterproof sheet 6 engaged with the engagement portion 30 to stretch, thereby reducing wrinkles in the waterproof sheet 6 stretched over the wall 10.

[0058] (2) The waterproof sheet installation auxiliary jig 20 further includes a biasing portion 40 that biases the engaging portion 30 so that the engaging portion 30 moves away from the lever portion 28. According to this configuration, the engaging portion 30 is biased against the lever portion 28, so that the engaging portion 30 can be tightly engaged with the wall sheet portion 6B.

[0059] (3) The waterproof sheet installation auxiliary jig 20 may further include a first restricting portion 41. The first restricting portion 41 restricts the position of the engaging portion 30 relative to the lever portion 28 so that the angle A between the lever portion 28 and the engaging portion 30 is equal to or smaller than a first angle A1. The first restricting portion 41 is configured to be able to release the position restriction of the engaging portion 30 relative to the lever portion 28.

[0060] According to this configuration, the position of the engaging portion 30 can be maintained in a state in which the angle A between the lever portion 28 and the engaging portion 30 is equal to or less than the first angle A1. This makes it difficult for the claw portion 36 of the engaging portion 30 to come into contact with the wall sheet portion 6B. This reduces the chance of the claw portion 36 of the engaging portion 30 getting caught on the wall sheet portion 6B due to carelessness on the part of the worker, making it easier to position the waterproof sheet installation auxiliary jig 20 at a position a predetermined distance away from the wall 10.

[0061] (4) The waterproof sheet installation auxiliary jig 20 may further include a second regulating portion 51. The second regulating portion 51 regulates the position of the engaging portion 30 relative to the lever portion 28 so that the angle A between the lever portion 28 and the engaging portion 30 is equal to or smaller than a second angle A2 that is larger than the first angle A1. With this configuration, the force applied to the lever portion 28 can be easily transmitted to the engaging portion 30.

[0062] (5) The waterproof sheet installation auxiliary jig 20 may further include a support member 60. The support member 60 is disposed between the wall 10 and the lever portion 28 so that the distance between the wall 10 and the lever portion 28 does not become shorter than a predetermined distance when the waterproof sheet installation auxiliary jig 20 is in a temporarily fastened state. According to this configuration, the support member 60 maintains the distance between the wall 10 and the lever portion 28 at the predetermined distance, so that the waterproof sheet installation auxiliary jig 20 can be maintained in a temporarily fastened state.

[0063] (6) Support member 60 is rotatably attached to lever portion 28, or is detachably attached to lever portion 28. According to this configuration, since support member 60 is attached to lever portion 28, loss of support member 60 can be prevented.

[0064] (7) In the waterproof sheet installation auxiliary jig 20, the contact portion 23 of the base portion 22 is configured to have a curved surface. With this configuration, it is possible to prevent traces of the use of the waterproof sheet installation auxiliary jig 20 from remaining on the floor sheet portion 6A.

[0065] (8) The waterproof sheet installation method includes a first step and a second step of fixing the wall sheet portion 6B to the wall 10. In the first step, the wall sheet portion 6B, which is a part of the waterproof sheet 6, is brought into contact with the wall 10 rising from the floor 2, and the wall sheet portion 6B is temporarily fixed by a waterproof sheet installation auxiliary jig 20. According to this configuration, since the waterproof sheet installation auxiliary jig 20 is used in the installation of attaching the waterproof sheet 6 to the wall 10, the occurrence of wrinkles can be suppressed when the waterproof sheet 6 is attached to the wall 10.

[0066] <Modification> The above embodiment is an example of the form that the waterproof sheet installation auxiliary jig 20 and the waterproof sheet installation method can take, and is not intended to limit the form. The waterproof sheet installation auxiliary jig 20 and the waterproof sheet installation method can take a form different from the form exemplified in the above embodiment. Examples of such a form include a form in which a part of the configuration of the embodiment is replaced, changed, or omitted, or a form in which a new configuration is added to the embodiment. Modified examples of the embodiment are shown below.

[0067] 9 shows a modified example of the base 22. In this modified example, a contact portion 23 is provided at the lowest point of the base 22. Even when the waterproof sheet installation auxiliary jig 20 has a base 22 with such a structure, the effects of the embodiment are achieved.

[0068] In the above embodiment, the biasing portion 40 is disposed between the lower portion of the lever portion 28 and the middle portion of the engagement portion 30, but the biasing portion 40 may be provided on the hinge 39. The biasing portion 40 of the hinge 39 biases the hinge 39 to open. Even with such a structure, the biasing portion 40 can bias the engagement portion 30 so as to move the engagement portion 30 away from the lever portion 28.

[0069] In the above embodiment, the second restricting portion 51 is built into the hinge 39, but the second restricting portion 51 may be provided outside the hinge 39. For example, the second restricting portion 51 may be configured as a stopper protruding from the cross extension portion 26. The stopper is configured so that the engaging portion 30 abuts against the stopper when the angle A between the lever portion 28 and the engaging portion 30 becomes the second angle A2. This limits the angle A between the lever portion 28 and the engaging portion 30 to an angle equal to or less than the second angle A2.

[0070] In the above embodiment, the support member 60 is rotatably attached to the lever portion 28, but the support member 60 may be detachably attached to the lever portion 28. For example, the support member 60 may be housed in a case provided in the lever portion 28.

[0071] In this embodiment, the waterproof sheet installation auxiliary jig 20 is used when stretching the waterproof sheet 6 of the floor unit 3 onto the wall 10 of the balcony 1, but the form of the waterproof sheet 6 to which the waterproof sheet installation auxiliary jig 20 can be applied is not limited to this. For example, the waterproof sheet installation auxiliary jig 20 can also be applied when laying the waterproof sheet 6 from the existing floor 2 to the wall 10.

[0072] The waterproof sheet installation auxiliary tool 20 can also be used when the waterproof sheet 6 is applied only to the wall 10. In this case, the bottom end of the waterproof sheet 6 is fixed to the wall 10. Then, the waterproof sheet installation auxiliary tool 20 can be used to pull the waterproof sheet 6 upward.

[0073] The biasing portion 40 may be omitted from the waterproof sheet installation auxiliary jig 20. In this case, the worker engages the claw portion 36 of the engagement portion 30 with the waterproof sheet 6.

[0074] This specification discloses the following techniques. [Appendix 1] Appendix 1 is a waterproof sheet installation auxiliary tool that assists in the work of attaching a waterproof sheet to a wall. The waterproof sheet installation auxiliary tool includes a handle portion and an engagement portion that engages with a wall sheet portion of the waterproof sheet that is attached to the wall. The handle portion has a base portion including a contact portion that contacts a floor connected to the wall, and a lever portion extending from the base portion. The engagement portion has an attachment portion that is rotatably attached to the base, an extension portion that extends from the attachment portion, and a claw portion that is provided on the extension portion and that is inserted into an upper portion of the wall sheet portion.

[0075] [Appendix 2] The waterproof sheet installation auxiliary jig described in Appendix 1 further includes a biasing portion that biases the engaging portion so as to move the engaging portion away from the lever portion.

[0076] [Appendix 3] The waterproof sheet installation auxiliary jig described in Appendix 2 further includes a first restricting portion that restricts the position of the engaging portion relative to the lever portion so that the angle between the lever portion and the engaging portion is equal to or smaller than a first angle. The first restricting portion is configured to be able to release the restriction of the position of the engaging portion relative to the lever portion.

[0077] [Appendix 4] The waterproof sheet installation auxiliary jig described in Appendix 3 further includes a second regulating portion that regulates the position of the engaging portion relative to the lever portion so that the angle between the lever portion and the engaging portion is equal to or smaller than a second angle that is greater than the first angle.

[0078] [Appendix 5] The waterproof sheet installation auxiliary jig described in Appendix 2 further includes a support member disposed between the wall and the lever portion so that the distance between the wall and the lever portion is not shorter than a predetermined distance when the waterproof sheet installation auxiliary jig is in a temporarily fastened state. The temporarily fastened state is a state in which the claw portion is inserted into the wall sheet portion of the waterproof sheet and the wall sheet portion is pulled.

[0079] [Appendix 6] In the waterproof sheet installation auxiliary jig described in Appendix 5, the support member is rotatably attached to the lever portion, or is detachably attached to the lever portion.

[0080] [Appendix 7] In the waterproof sheet installation auxiliary jig described in Appendix 1, the contact portion of the base is configured as a curved surface.

[0081] [Appendix 8] Supplementary Note 8 relates to a waterproof sheet installation method for attaching a waterproof sheet to a wall. The waterproof sheet installation method includes a first step and a second step. In the first step, a wall sheet portion, which is a part of the waterproof sheet, is brought into contact with a wall rising from a floor, and the wall sheet portion is temporarily fixed by a waterproof sheet installation auxiliary tool described in any one of Supplementary Note 1 to 7. In the second step, the wall sheet portion is fixed to the wall. [Explanation of symbols]

[0082] A...angle, A1...first angle, A2...second angle, 1...balcony, 2...floor, 6...waterproof sheet, 6B...wall sheet portion, 10...wall, 20...waterproof sheet installation auxiliary jig, 21...handle portion, 22...base portion, 23...contact portion, 28...lever portion, 30...engagement portion, 31...mounting portion, 32...extension portion, 36...claw portion, 40...urge portion, 41...first regulating portion, 51...second regulating portion, 60...support member.

Claims

1. A waterproof sheet installation auxiliary tool that assists in the installation work of attaching a waterproof sheet to a wall, A handle portion and an engagement portion provided on the handle portion and adapted to engage with a wall sheet portion of the waterproof sheet attached to the wall, The handle portion has a base portion including a contact portion that contacts a floor connected to the wall, and a lever portion extending from the base portion, The engagement portion has an attachment portion rotatably attached to the base, an extension portion extending from the attachment portion, and a claw portion provided on the extension portion and inserted into an upper portion of the wall sheet portion. Waterproof sheet installation aid.

2. The engaging portion may further include a biasing portion that biases the engaging portion so as to move the engaging portion away from the lever portion. A waterproof sheet installation auxiliary tool according to claim 1.

3. a first restriction portion that restricts a position of the engaging portion relative to the lever portion so that an angle between the lever portion and the engaging portion is equal to or smaller than a first angle; The first restricting portion is configured to be able to release the position restriction of the engaging portion with respect to the lever portion. A waterproof sheet installation auxiliary tool according to claim 2.

4. a second restriction portion that restricts a position of the engaging portion relative to the lever portion so that an angle between the lever portion and the engaging portion is equal to or smaller than a second angle that is larger than the first angle; A waterproof sheet installation auxiliary tool according to claim 3.

5. The waterproof sheet installation auxiliary tool further includes a support member disposed between the wall and the lever portion so that the distance between the wall and the lever portion is not shorter than a predetermined distance in a temporary fastening state of the waterproof sheet installation auxiliary tool, and the temporary fastening state is a state in which the claw portion is inserted into the wall sheet portion of the waterproof sheet and the wall sheet portion is pulled. A waterproof sheet installation auxiliary tool according to claim 2.

6. The support member is rotatably attached to the lever portion, or is detachably attached to the lever portion. A waterproof sheet installation auxiliary tool according to claim 5.

7. The contact portion of the base portion is configured to have a curved surface. A waterproof sheet installation auxiliary tool according to claim 1.

8. A waterproof sheet installation method for attaching a waterproof sheet to a wall, comprising: A first step of temporarily fastening the wall sheet portion, which is a part of the waterproof sheet, by the waterproof sheet installation auxiliary tool according to any one of claims 1 to 7 in a state in which the wall sheet portion is in contact with a wall rising from a floor; A second step of fixing the wall sheet portion to the wall. How to install a waterproof sheet.

Images