KR20130071033A - Scraper - Google Patents

Abstract

PURPOSE: A joint removing tool is provided to improve a fixing force by fixing a cutter penetrating a screw rod of a connector with a nut. CONSTITUTION: A joint removing tool comprises a bar(10), a connector(110), a cutter(20), and a nut(120). The connector is fixed to one end of the bar and comprises a screw rod(112) protruding in a longitudinal direction. A handle is formed at other end of the bar. A hole(22) is formed in the center of the cutter so that the screw rod penetrates the hole. The nut is screwed to the screw rod. A fixing rod is formed on the other side of the screw rod of the connector and is connected to the screw hole formed on the end of the bar.

Description

Scraper {SCRAPER}

The present invention relates to a scraper, and more particularly, to a scraper used to scrape and remove joints between tiles and tiles or between floors and floors in a tile or flooring material.

In general, tiles or flooring materials are of a predetermined size, and each tile or flooring material is spaced apart from each other by a predetermined interval, and is constructed as a checker board.

The part formed between tiles, walls or floors, like the form of a checkerboard, is often called a joint. If you rebuild or replace part of a tile or wall or floor, the removal of silicon or cement It should be preceded, in which a scraper with a sharp tip is used.

Conventional scrapers are provided with a cutter having a sharp tip at one end of a bar of a predetermined length and a handle at the other end of the bar.

However, the conventional scraper has a structure in which a screw hole is drilled at the tip of the bar and the cutter is fixed to the tip of the bar by using a bolt. However, this structure is a structure in which the cutter is fixed only by the fastening force of the bolt. There is a problem that it is easy to loosen, which causes frequent re-tightening of the bolts, and also because the bar connecting the cutter and the handle is in a straight line, the worker's wrist is bent when the joint is removed. There is a problem that the fixing force is weak and cause inconvenience to the operator.

An object of the present invention for solving the problems of the conventional scraper is to improve the clamping force of the cutter to provide a scraper that is not easily released.

Another object of the present invention is to provide an ergonomically designed scraper, to allow various types of cutters to be replaced in a one-touch manner, and to provide a scraper for easily adjusting the length of a bar.

The present invention for achieving the above object is a bar (10) having a predetermined length; A connector 110 fixed to one end of the bar and having a screw rod 112 protruding in the longitudinal direction of the bar; A cutter 20 having a hole 22 formed at a center thereof so as to penetrate the screw rod; And a nut 120 screwed to the screw rod penetrating the cutter.

According to a preferred embodiment of the present invention is characterized in that the handle 30 is formed at the other end of the bar 10.

According to a preferred embodiment of the present invention, the outer surface of the connector 110 is gradually extended in the direction of the bar 10 from the screw rod 112, characterized in that the inclined surface 113 of the conical shape is formed.

According to a preferred embodiment, the present invention is characterized in that the connector 110 is integrally processed with the bar 10 or is detachable from the bar.

At this time, the detachable structure of the connector 110, the fixing rod 111 is further formed on the opposite side of the screw rod of the connector, the fixing rod is characterized in that is fastened to the screw hole 101 formed at the tip of the bar (10) Scraper.

According to a preferred embodiment the present invention is characterized in that the bar 10 is in a straight line, or a portion of which is bent at a certain angle (A).

According to a preferred embodiment of the present invention, the bar 10 may be detachable from the handle 30, and furthermore, the length of the bar may be adjusted.

According to the present invention, the cutter fastening force is improved by taking a structure in which the cutter fastened to the tip of the bar is fixed by the tightening force of the nut in a state where the cutter penetrates the threaded rod of the connector fixed to the bar. Tightening on an inclined surface doubles the clamping force so that the cutter does not loosen easily, eliminating the need for the operator to tighten the cutter frequently.

In addition, when the bar connecting the cutter and the handle is bent at a certain angle according to the ergonomic design, the operator's wrist or hand does not become excessive when the joint is removed, and the user does not feel fatigue easily even for a long time. It can be improved.

In addition, various types of cutters can be replaced by one touch with one handle, so that the cutter of the desired shape can be replaced quickly and easily as needed, and the length of the bar can be adjusted to meet the condition of the joint or the taste of the operator. Therefore, the work efficiency can be improved by adjusting the length appropriately.

In addition, the scraper of the present invention can be used for cutting and bending of acrylic material, aluminum material, stainless material, iron plate material in addition to construction.

1 is an overall configuration diagram of a scraper according to a first embodiment of the present invention.
Figure 2 is an exploded perspective view of the cutter portion of the scraper according to the first embodiment of the present invention.
3 is a cross-sectional view of the cutter portion of the scraper according to the first embodiment of the present invention.
Figure 4 is an exploded perspective view of the cutter portion of the scraper according to the second embodiment of the present invention.
5 is a cross-sectional view of the cutter portion of the scraper according to the second embodiment of the present invention.
6 is a perspective view showing a modified example of the scraper cutter according to the present invention.
7 is an overall configuration diagram of a scraper according to a third embodiment of the present invention.
8 is a cross-sectional view showing a bar detachable structure of the scraper according to the fourth embodiment of the present invention.
9 is a bar length adjustment configuration of the scraper according to the fifth embodiment of the present invention.
10 is a bar configuration diagram of a scraper showing a modified state of the fifth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings, which show preferred embodiments of the present invention. It should be understood, however, that there is no intention to limit the invention to the particular form disclosed, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. A detailed description thereof will be omitted.

1 is an overall configuration diagram of a scraper according to the first embodiment of the present invention, Figure 2 is an exploded perspective view of the cutter portion of the scraper according to the first embodiment of the present invention, Figure 3 is a first embodiment of the present invention It is sectional drawing of the cutter part of the scraper.

1 to 3, the scraper of the present invention includes a bar 10 having a predetermined length and a cutter 20 provided on one side of the bar 10, and optionally the bar. It may be configured to further include a handle 30 on the other side of the (10).

As shown in Fig. 2, the bar 10 has a predetermined length and its cross section has a circular or triangular, quadrilateral, pentagonal or hexagonal cross section as illustrated, or various numbers of angles. It may be a polygon.

The connector 110 is to be fixed to one end of the bar 10, the screw rod 112 protrudes in the longitudinal direction of the bar 10 on one side.

The cutter 20 is for scraping in contact with the joint and has a sharp blade at least at a portion thereof, and a hole 22 is drilled in the center so that the screw rod 112 penetrates.

The nut 120 is a screw thread formed on the inner surface of the hole is an element that is fastened to the screw rod (112).

In this case, the connector 110 is fixed to one end of the bar 10, and the cutter 20 is installed outside the screw rod 112 so that the screw rod 112 penetrates the hole 22 of the cutter 20. When the nut 120 is fastened to the screw rod 112, the cutter 20 is fixed by the tightening tightening force of the nut 120 in a state in which the cutter 20 is disposed between the bar 10 and the nut 120.

In a preferred embodiment, the outer surface of the connector 110 is gradually extended in the direction in which the bar 10 is located in the screw rod 112 may be formed, for example, inclined surface 113 of the cone shape. In this case, when the nut 120 is tightened, the cutter 20 gradually descends, and the circular edge portion of the lower end of the hole 22 of the cutter is dug down while riding down the inclined surface 113 to fix the interference force, thereby doubling the fixing force. have.

The connector 110 may be integrally processed to the bar 10. That is, one end of the bar 10 may be formed using the machining equipment such as a lathe or a CNC to form the threaded rod 112 and the inclined surface 113 to manufacture the connector 110 as shown in FIG. 2.

4 is an exploded perspective view of a cutter part of the scraper according to the second embodiment of the present invention, and FIG. 5 is a cross-sectional view of the cutter part of the scraper according to the second embodiment of the present invention.

As shown in FIGS. 4 and 5, the connector 110 may be configured to be detachable from the bar 10.

In the detachable structure of the connector 110, the fixing rod 111 is provided on the opposite side on which the screw rod 112 is formed in the connector 110, and the screw hole 101 is drilled in the front end surface of the bar 10. At this time, the fixing rod 111 is a structure for fastening to the screw hole (101). Vertical cutting surfaces 114 are formed at both sides of the inclined surface 113 to fasten the connector 110 to the bar 10 using a tool such as a spanner.

The structure in which the nut 120 is fastened to the other connector 110 and the structure in which the inclined surface 113 is formed are the same as those of the first embodiment, and thus a repeated description thereof will be omitted.

6 is a perspective view showing a modified example of the scraper cutter according to the present invention, as shown in FIG. 6, the cutter 20 may be in the form of a diamond having a predetermined thickness in front view as shown in (a), or ( b) may have a rhombus shape having a predetermined thickness in front view, and in addition to the illustrated shape, there is no limitation in the shape as long as the hole 22 is formed inside and a blade is formed so as to scrape and remove the joint. .

7 is a view showing the overall configuration of the scraper according to the third embodiment of the present invention, a portion of the bar 10 may be bent by bending a certain angle (A).

In this configuration, the handle 30 does not touch the tile or the floor even when the scraper is laid down to make the best use of the cutter 20 (when the cutter is placed as vertically as possible). You do not have to use a lot of benefits such as less crowded.

Since the angle of inclination A of the bar 10 can be selected and designed in an optimal range in consideration of optimal workability, the present invention has limitations or limitations in the refractive angle A of the bar 10. no.

8 is a cross-sectional view showing a bar detachment structure of the scraper according to the fourth embodiment of the present invention, Figure 9 is a bar length adjustment configuration diagram of a scraper according to a fifth embodiment of the present invention, Figure 10 is a first embodiment of the present invention 5 is a bar configuration diagram of the scraper showing the deformed state of the fifth embodiment.

As shown in FIG. 8, the bar 10 may be detachably configured from the handle 30, and the detachable structure of the bar 10 may include a guide tube 31 having a stopper 32. And a slider 33 elastically supported by the elastic member 34 and a bar 10 formed with a groove.

The guide tube 31 is fixed to the handle 30 has a guide function to enable the insertion or removal of the bar (10).

The stopper 32 has a ball shape and is embedded in a hole formed in the wall surface of the guide tube 31, and is configured to protrude to the inner surface or the outer surface of the guide tube 31 according to the position of the slider 33. .

The slider 33 is movable in the longitudinal direction of the guide tube 31 from the outer surface of the guide tube 31, and protrudes or releases the stopper 32 to the inner surface of the guide tube according to the position. .

The elastic member 34 is shaped like a coil spring and is interposed between the inner surface of the slider 33 and the outer surface of the guide tube 31 to elastically support the slider 33 in one direction.

With this arrangement, as shown in FIG. 8A, when the slider 33 is positioned in the inlet direction of the guide tube 31 by the elastic force of the elastic member 34, the slider 33 moves the stopper 32 inward. In this case, the stopper 32 is inserted into the groove 11 formed in the bar 10 so that the bar 10 is fixed to the handle 30.

On the contrary, when the slider 33 is moved in the direction of the handle 30, the restraint of the stopper 32 is released, so that the bar 10 can be detached or coupled from the handle 30 by pulling or pushing the bar 10. The bar 10 can be attached and detached by one touch.

As shown in FIG. 9A, when two first grooves 11 and two second grooves 12 are installed at different positions in the bar 10, the distance between the handle 30 and the cutter 20 may be reduced. I can regulate it.

That is, when the first groove 11 is fixed to the stopper 32 (see FIG. 8) while the bar 10 is inserted into the handle 30 as shown in FIG. 9B, the length of the bar 10 is relatively increased. When the bar 10 is further pushed in and the second groove 12 is fixed to the stopper 32 as shown in FIG. 9C, the length of the bar 10 is relatively short.

The stopper 32 may be provided at a plurality of locations, and a groove corresponding thereto may also be provided at a plurality of locations. In addition, as shown in FIG. 10, the bar 10 may be provided with a plurality of perforations 15 at regular intervals so that the stopper 32 can be inserted therein. The length of the 10 can be adjusted appropriately, and when the plurality of grooves or perforation holes are installed, the length of the bar 10 can be more finely adjusted.

Although the present invention has been described in connection with the preferred embodiments described above, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All such changes and modifications are intended to be within the scope of the appended claims.

10: bar 11: first groove
12: second groove
20: cutter 22: hole
30: handle 31: guide tube
32: stopper 33: slider
34: elastic member
101: screw hole 110: connector
111: fixed rod 112: screw rod
113: inclined plane 114: incision plane
120: Nut

Claims (10)

A bar 10 having a predetermined length;
A connector 110 fixed to one end of the bar and having a screw rod 112 protruding in the longitudinal direction of the bar;
A cutter 20 having a hole 22 formed at a center thereof so as to penetrate the screw rod;
And a nut (120) screwed to the threaded rod through the cutter.
The method of claim 1,
Scraper, characterized in that the handle 30 is formed on the other end of the bar (10).
The method of claim 1,
Scraper, characterized in that the outer surface of the connector 110 is gradually extended in the direction of the bar (10) from the screw rod (112) to form a conical inclined surface (113).
The method of claim 1,
The connector 110 is a scraper, characterized in that the bar 10 is integrally processed or detachable to the bar.
5. The method of claim 4,
Removable structure of the connector 110, the fixing rod 111 is further formed on the opposite side of the screw rod of the connector, the fixing rod is characterized in that the fastening to the screw hole 101 formed at the tip of the bar (10) Scraper.
The method of claim 1,
The bar (10) is scraper, characterized in that the straight line or a portion of the angle (A) bent.
The method of claim 1,
The cutter (20) is a scraper, characterized in that the diamond or diamond shape having a predetermined thickness in front view.
The method of claim 2,
The bar 10 is scraper, characterized in that detachable from the handle (30).
The method of claim 8,
Detachable structure of the bar 10, the guide tube 31 is fixed to the handle 30 to insert or detach the bar 10, and
A ball-shaped stopper 32 embedded in the hole in the wall of the guide tube and protruding to the inner or outer surface of the guide tube;
A slider 33 capable of sliding in the longitudinal direction of the guide tube on the outer surface of the guide tube, protruding or releasing the stopper 32 to the inner surface of the guide tube according to a position;
An elastic member 34 for elastically supporting the slider 33 in one direction;
Scraper, characterized in that made of a combination of one or a plurality of grooves provided to be inserted into the stopper (32) on one side of the bar (10).
The method of claim 9,
The groove is provided with two or more scrapers, characterized in that the length of the bar is adjustable according to each position as each groove is fastened to the stopper.

Images