JPH03241170A - Plastering trowel - Google Patents

Abstract

PURPOSE:To prevent peeling off of tiles from a concrete wall by mounting a vibration generating body on the upper surface of a plastering trowel plate in a removable state and making the joining force of a base mortar layer to the concrete wall stronger by vibrating the trowel plate. CONSTITUTION:A vibration generating body V is mounted on the upper surface of the plastering trowel 2 together with a permanent magnet 1. The body contains a vibrating motor 6, dry cells 7, and a switch 8 and the rotary shaft 6a of the motor 6 is eccentrically fitted with a weight 9. In order to make the surface of a base mortar layer applied to a concrete wall smooth, the trowel is used while the motor 6 is actuated. Because of the vibration of the trowel plate, the water contained in the mortar comes out and the affinity of the mortar layer to the surface layer section of the concrete wall is enhanced, resulting in an increase in the joining force of the mortar to the concrete wall. Therefore, peeling off of tiles from the concrete wall can be prevented.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is used to flatten the surface of a base mortar layer that is applied directly to a concrete wall before affixing tiles to the exterior wall of a building. This article relates to a plastering trowel.

[Conventional technology]

To attach tiles to the exterior wall of a building, mortar is applied to the concrete wall to form a base mortar layer to smooth out the unevenness of the concrete wall, and after this base mortar layer has hardened, mortar is applied on top of this. The upper mortar layer is coated with a layer of mortar, the tiles are dug into the upper mortar layer, and the tiles are attached as the mortar dries.

In old buildings that have been constructed for many years, accidents have occurred in which tiles pasted in the above manner peel off from the exterior walls and fall, injuring passersby.

Regarding this peeling of tiles, there are cases where only the tile is peeled off from the upper mortar layer, but when the base mortar layer is peeled off from the concrete wall surface, the base mortar layer and the tile are peeled off as one. There is also. That is, tiles peel off due to the weak bonding strength between the concrete wall surface and the underlying mortar layer.

[Problem to be solved by the invention]

The present invention improves the bonding strength of the base mortar layer to the concrete wall surface by smoothing the surface of the base mortar layer applied directly to the concrete wall surface while applying vibration to the trowel plate, thereby preventing tiles from peeling off. The aim is to prevent

[Means to solve the problem]

The means adopted by the present invention to solve the above problems is that a vibration generator is removably attached to the upper surface of a trowel plate of a plastering trowel used to flatten a base mortar layer. be.

[Action of the invention]

The surface of the base mortar layer is flattened while the trowel plate is vibrated, so the vibration action pushes out the water contained in the mortar and permeates into the surface layer of the concrete wall. As a result, during the hardening of the mortar, the contact area between the surface layer of the concrete wall and the base mortar layer becomes better, and the bonding force of the base mortar layer to the concrete wall surface increases.

In addition, the vibration generator is removably attached to the iron plate, so by removing the vibration generator, you can wash or store the iron, and you can also remove the vibration generator from other irons. There are benefits that can be shared.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.

The vibration generator V of this embodiment is removably attached to the upper surface of the trowel plate 2 of the plastering trowel A via the permanent magnet 1. That is, as shown in FIGS. 3 and 4, a ring-shaped permanent magnet 1 is bonded to the back surface of a flanged disk 3, and this flanged disk 3 is attached to the case 4 of the vibration generator V. It is attached to the back side with screws 5. The case 4 of the vibration generator V has a two-part structure, and includes a vibration motor 6, a dry battery 7 that serves as an IF source for the vibration motor 6, and a switch 8 for turning the vibration motor 6 ON-OFF. It is stored. The vibration motor 6 has a weight 9 on its rotating shaft 6a.
The vibration motor 6 is mounted eccentrically, and when the vibration generator ■ is attached to the upper surface of the soldering iron plate 2, the vibration motor 6
The rotation axis 6a is perpendicular to the surface of the iron plate 2. The push S port 8a of the switch 8 is attached to the top surface of the case 4, and is used to activate the vibration motor 6 during plastering work.
This is to facilitate the ON-OFF operation.

Further, an endless hook string 11 is attached to the vibration generator V, and the hook string 11 is connected to the handle 12 of the trowel A.
By hooking it to the part of
Safety is ensured by preventing the vibration generator V from falling even if it is removed from i2.

The case 4 has a cylindrical shape and has a flat part 4a on the side surface, as shown in FIGS. 1 and 2.
With the flat part 4a of the case 4 in contact with the front end surface of the handle 12, a vibration generator V is attached to a wide space in front of the handle 12 on the iron plate 2 by means of a permanent magnet l.

Then, the vibration motor 6 is started by the switch 8, and in this state, in order to eliminate the unevenness of the surface of the concrete wall 13, the surface of the base mortar layer 14 that has been applied directly to this part is used with the trowel plate 2. When flattened,
Moisture contained in the mortar is pushed out by the vibration action and penetrates into the surface layer of the concrete wall 13, and during the hardening of the mortar, the contact area between the surface layer of the concrete wall 13 and the base mortar layer 14 becomes loose. Becomes good. As a result, after the base mortar layer 14 has hardened,
The bonding strength of the base mortar layer 14 to the concrete wall 13 increases.

After the base mortar layer 14 with the smoothed surface has hardened in this way, mortar is further applied on top of the base mortar layer 14 to form a top mortar layer (not shown). The tiles are cut in and pasted. In addition, when smoothing the surface of this upper mortar layer,
When the trowel A according to the present invention is used, the bonding force with the base mortar layer 14 increases due to the vibration effect.

In particular, in this embodiment, the rotation shaft 6 of the vibration motor 6
Since a is perpendicular to the surface of the iron plate 2,
In the case of the same vibration energy, the deflection of the trowel plate 2 becomes the smallest, and the effect of pushing out the moisture in the mortar becomes high.

Further, as shown in FIG. 5, by removing the vibration generator V from the iron plate 2, the iron plate 2 can be washed or stored.

In the above embodiment, the permanent magnet l is used as a means for removably attaching the vibration generator (2) to the soldering iron plate (2), but this means is not limited at all, and for example, a suction cup may be used. is also possible.

〔Effect of the invention〕

When the plastering trowel according to the present invention is used to flatten the surface of the base mortar layer, the vibration action of the trowel plate increases the bonding force of the base mortar layer to the concrete wall. , the risk of the underlying mortar layer peeling off together with the tile is eliminated or drastically reduced.

In addition, since the vibration generator is removably attached to the iron plate, there is no need to modify the iron at all.
The conventional trowel can be used as is, and the vibration generator can be shared, and the above-mentioned great effects can be expected at extremely low cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the surface of the base mortar layer 14 being smoothed using a plastering trowel A according to the present invention, FIG. 2 is a side sectional view, and FIG. FIG. 4 is a front view of the soldering iron A with the vibration generator V section broken, and FIG. 4 is a view of the vibration generator ■ seen from the direction of arrow P in FIG. Trowel A with vibration generator V removed
FIG. The explanations of the symbols of the main parts constituting the present invention are as follows. A: Plastering trowel ■: Vibration generator 1: Permanent magnet
2: Trowel plate 6: Vibration motor 13: Concrete wall 14: Base mortar layer

Claims (1)

[Claims] A trowel for plastering, characterized in that a vibration generator is detachably attached to the upper surface of a trowel plate.