JP3001965U - Grooving surface trowel for stairs - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to chamfer the corners of a staircase and to form a groove for non-slip at the same time when finishing the staircase with mortar. [Structure] A trowel body 1 having an L-shaped cross section, which includes a vertical surface portion 1a for hitting a vertical surface of a corner of a staircase, a corner surface portion 1b for hitting a corner of the staircase, and a horizontal surface portion 1c for hitting a horizontal surface of the staircase. And a support body 2 that is planted in the trowel body 1, and a handle 3 provided at the end of the support body 2 for gripping with a hand.
And a plurality of ridges 4 formed on the lower surface of the horizontal surface portion 1c of the iron body 1. Vertical surface part 1 of the iron body 1
a, the corner surface portion 1b, the horizontal surface portion 1c, the vertical surface of the stair corner portion,
After touching the corner and the horizontal surface respectively, pull from the one end of the stairway front to the opposite end to the left and right with reference to the vertical surface of the staircase corner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a trowel for chamfering a corner portion of a concrete staircase and forming a groove portion for preventing slippage.

[0002]

[Prior art]

 At the corners of conventional stairs, tiles with anti-slip grooves were attached in advance, or anti-slip strips were attached or attached.

[0003]

[Problems to be solved by the device]

 However, in a conventional staircase to which a tile provided with a non-slip groove is attached, the tile has a long life, and the mortar portion on the rear side is weak, resulting in an uneven state, and the tile may peel off.

In addition, there is a problem that it takes a lot of time and cost to attach a tile provided with a non-slip groove or a strip for non-slip.

In view of the above points, an object of the present invention is to chamfer a corner portion of a staircase and to form a groove for non-slip at the same time when finishing the staircase with mortar.

[0006]

[Means for Solving the Problems]

 As shown in FIGS. 1, 2, and 6, the problem solving means according to the present invention comprises a vertical surface portion 1a for contacting a vertical surface X of a corner portion of stair A, a corner surface portion 1b for contacting a corner Y of stair A, and a staircase. A trowel body 1 having an L-shaped cross section, which is composed of a horizontal plane portion 1c to be applied to the horizontal plane Z of A, a support body 2 erected on the trowel body body 1, and a hand provided at an end portion of the support body 2 It is provided with a handle 3 for gripping and a plurality of ridges 4 formed on the lower surface of the horizontal surface portion 1c of the iron body 1.

[0007]

[Action]

 In the above problem solving means, the method of use will be described. When finishing the stairs foundation by applying finishing mortar, when finishing the corners of the stairs, an L-shaped trowel with a groove for pulling the stairs After the vertical surface portion 1a, the corner surface portion 1b, and the horizontal surface portion 1c of the main body 1 are respectively applied to the vertical surface X, the corner portion Y, and the horizontal surface Z of the staircase corner portion, the staircase angle from one end to the opposite end of the stairway frontage By pulling left and right with respect to the vertical surface X of the section, the stair corner is chamfered in an arc shape B, and the non-slip groove C 1 is formed at one time on the horizontal plane Z of the stair corner.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. First, a description will be given with reference to FIGS. 1, 2A, 2B, 2C, and 6 and a first embodiment will be described. This surface iron is a vertical surface for contacting a vertical surface X of a corner portion of a stair A. An iron body 1 having an L-shaped cross section, which includes a surface portion 1a, a corner surface portion 1b for contacting the corner Y of the stair A, and a horizontal surface portion 1c for contacting the horizontal surface Z of the stair A, and the iron body 1 An upright supporting body 2, a handle 3 provided at an end portion of the supporting body 2 for gripping by hand, and two ridges 4 formed on a lower surface of a horizontal plane portion 1c of the trowel body 1. It is equipped with The ridge 4 has a triangular cross-sectional shape.

Next, the method of use will be explained. When finishing mortar for finishing by applying mortar for finishing to the stairs foundation, when finishing the corners of the stairs, the L-shaped tip of the grooved surface trowel for stairs of the present invention is used. After applying the vertical surface portion 1a, the corner surface portion 1b, and the horizontal surface portion 1c of the iron body 1 to the vertical surface X, the corner portion Y, and the horizontal surface Z of the staircase corner portion, respectively, from one end to the opposite end of the stairway frontage. By pulling left and right with respect to the vertical plane X of the staircase corner, the staircase corner is chamfered in an arc shape B, and the non-slip groove C is formed at one time on the horizontal plane Z of the staircase corner.

FIGS. 3A, 3B, 3C and 3D show a second embodiment in which both ends of the ridge 4 gradually become zero as they approach the ends. The gradual-change portion 4a is formed into a shape that is easy to separate and advance the mortar when forming the groove C. Other configurations and operations are similar to those of the first embodiment.

FIGS. 4A and 4B show a third embodiment, in which the ridges 4 of the iron body 1 are arranged in three rows. Other configurations and operations are similar to those of the first embodiment.

FIGS. 5A and 5B show a fourth embodiment, in which the cross-sectional shape of the ridge 4 on the lower side of the horizontal plane portion 1c of the trowel body 1 is a quadrangle. Other configurations and operations are similar to those of the first embodiment.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

[0014]

[Effect of device]

 As is clear from the above description, according to the present invention, it is possible to easily form the chamfer of the staircase corner and the anti-slip groove at the same time during the mortar finishing of the staircase, and the construction period can be shortened. In addition, there is no need to perform tiling work on the corners of the stairs, which has excellent effects such as saving costs.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2-A is a front view of the same.

FIG. 2B is a side view of the same.

FIG. 2C is a bottom view of the same.

FIG. 3A is a front view of the second embodiment of the present invention.

FIG. 3B is a side view of the same.

FIG. 3C is a bottom view of the same.

FIG. 3D is a perspective view of the same.

FIG. 4-A is a side view of the third embodiment of the present invention.

FIG. 4-B is a perspective view of the same.

FIG. 5A is a side view of a fourth embodiment of the present invention.

FIG. 5-B is a perspective view of the same.

FIG. 6 is a side view of a staircase formed by using the grooved surface trowel for stairs according to the first embodiment of the present invention.

[Explanation of symbols]

 1 Trowel main body 1a Vertical surface portion 1b Corner surface portion 1c Horizontal surface portion 2 Support body 3 Handle 4 Protrusion 4a Gradual change portion 4a

Claims (3)

[Scope of utility model registration request] 1. A trowel body having an L-shaped cross section, which comprises a vertical surface portion for hitting a vertical surface of a corner portion of a staircase, a corner surface portion for hitting a corner of the staircase, and a horizontal surface portion for hitting a horizontal surface of the staircase. A trowel that is planted in the trowel body; a handle provided at an end of the trowel body for gripping by a hand; and a plurality of protrusions formed on the lower surface of the horizontal surface of the trowel body. A grooved surface trowel for stairs that is equipped with a trowel. 2. The stepped anti-slip grooved surface member according to claim 1, wherein both end portions of the ridge are gradually changing portions in which the amount of protrusion gradually becomes zero as approaching the end. hand. 3. A grooved surface trowel for stair slipping, wherein the cross-sectional shape of the ridge according to claim 1 is a triangle or a quadrangle.