JP7602710B2 - Callus scraper - Google Patents

Description

The present invention relates to a callus scraper having a number of protruding blades formed on the surface of a metal plate.

Conventionally, products made of molded pumice or granular ceramics, or products made of thin stainless steel plates with protrusions have been used as tools for removing stratum corneum that occurs on human heels, elbows, etc. Also, as shown in Japanese Patent Laid-Open Publication No. 11-225915 (Patent Document 1) and Utility Model Registration No. 3131031 (Patent Document 2), callus removing tools having cut holes in a plate are known.

Japanese Patent Application Publication No. 11-225915 Utility Model Registration No. 3131031

The callus removal tools disclosed in the above Patent Documents 1 and 2 have holes drilled into a metal plate, and the callus is scraped off at the corners of the circumference of the holes. However, because the inner diameter of the holes is small, only a small amount of callus falls into the holes, and there is a problem that the amount of callus to be scraped off is small and it takes a long time. In addition, because the corners of the inner diameter of the holes for scraping off the callus are formed at almost right angles, the callus cannot be scraped off sufficiently, and moreover, it is necessary to press hard to make the callus fall into the holes, which increases the feeling of fatigue.

The problem to be solved by the present invention is to provide a callus scraper that can scrape off callus easily and efficiently by using a large number of protruding blades formed on the surface of a metal plate.

In order to solve the above problems, the invention described in claim 1 is a callus scraper having multiple jetty blades formed on the surface of a metal plate, wherein the jetty blades have a small jetty blade formed in a sawtooth shape and lower in height than the forward jetty blades and have tips facing in the other direction, protruding between multiple forward jetty blades of a predetermined height with their tips facing in one direction .

According to the present invention, the small jetty blades are formed in a sawtooth shape with a lower height than the forward jetty blades with their tips facing in the other direction, between the multiple forward jetty blades with a predetermined height with their tips facing in one direction, so that when the callus scraper is moved in the forward direction, the callus can be efficiently scraped off in a predetermined rough cutting state. Also, when the callus scraper is moved in the reverse direction, less callus is scraped off by the small jetty blades, so it can be used in two ways for finishing. Furthermore, when using a callus scraper, a chattering phenomenon can usually occur when it is moved in the reverse direction, but at this time, the amount of scraping off by the small jetty blades is small, so the chattering phenomenon can be suppressed and the usability can be improved.

FIG. 1 is a perspective view showing a callus scraping tool according to the present invention. FIG. 4 is a cross-sectional view showing a jetty blade formed on the callus scraper. FIG. 2 is a cross-sectional view showing a forward jetty blade and a small jetty blade formed on a callus scraper. 4A and 4B are process explanatory diagrams showing the process of forming a jetty blade. 1A and 1B are explanatory diagrams showing the state in which callus from the heel is scraped off with a callus scraper. 1A and 1B are partial cross-sectional views showing another embodiment of a callus scraper according to the present invention.

The callus scraper has a plurality of jetty blades formed on the surface of a metal plate, and the jetty blades have a plurality of forward jetty blades with a predetermined height and tips facing in one direction, and between these, small jetty blades formed in a sawtooth shape and lower in height than the forward jetty blades and with tips facing in the other direction, protrude.

The callus scraper according to the present invention will be described in detail below with reference to the drawings. Fig. 1 shows a callus scraper 1, and the metal plate 2 used in this callus scraper 1 is made of stainless steel, copper, or aluminum. This metal plate 2 is formed in a rectangular shape, and the thickness is preferably 0.5 mm to 2.0 mm, and these metal plates 2 may be plated. Furthermore, the callus scraper 11 is formed in a shape that takes into consideration the ease of use of the user, and a grip portion 1a is formed on one end side in the longitudinal direction. A plurality of jetty blades 3 are formed at equal intervals on the surface of the metal plate 2 excluding the grip portion 1a.

As shown in Figures 2 and 3, the jetty blade 3 has a forward jetty blade 3a and a small jetty blade 3b formed on the surface of the metal plate 2 in a direction perpendicular to the longitudinal direction. As shown in Figure 3, the forward jetty blade 3a has a height H1 formed at a predetermined height of approximately 0.2 mm to 0.5 mm from the surface of the metal plate 2. This forward jetty blade 3a is formed in a sawtooth shape, and its tip is directed in one direction to the left in the figure. On the other hand, the small jetty blade 3b is formed at a height H2 lower than the height H1 of the forward jetty blade 3a, and is formed at a predetermined height of approximately 0.1 mm to 0.4 mm from the surface of the metal plate 2. This small jetty blade 3b is also formed in a sawtooth shape, and its tip is directed to the right in the figure.

These forward jetty blades 3a and small jetty blades 3b are formed by the process shown in Fig. 4. The metal plate 2, which is the base material of the keratin scraper 1, is selected from stainless steel, copper, and aluminum that has been anodized. The thickness of the metal plate 2 is appropriately set to 0.5 mm to 2.0 mm. The metal plate 2 is placed on a processing device (not shown). Then, as shown in Fig. 4, the forward jetty blades 3a are formed to stand at equal intervals by a digging tool 5.

The excavation tool 5 has a blade 5a formed at the tip on the bottom side perpendicular to the direction of movement, and its width is set to the width of the forward jetty blade 3a forming the keratin scraper 1. The excavation tool 5 is attached to a driving device (not shown) at a predetermined angle θ1 so that the rear end side is higher than one side of the metal material 1. This inclination angle θ1 is set to approximately 10 degrees to 60 degrees. The angle θ2 between the sliding surface 5b of the excavation tool 5 and the direction of movement is set to approximately 30 degrees to 80 degrees.

First, as shown in Fig. 4(A), the blade portion 5a of the excavation tool 5 is brought into contact with the position of the metal plate 2 where the forward jetty blade 3a is to be formed, and then the excavation tool 5 is driven by the driving device to enter the metal plate 2 in the direction of the arrow at a predetermined angle θ1, so that the blade portion 5a of the excavation tool 5 bites into one side of the metal plate 2, forming the forward jetty blade 3a in an upright state. The height H1 of this forward jetty blade 3a is preferably about 0.1 mm to 0.5 mm.

Next, the excavation tool 5 is returned to the original position, and the metal plate 2 is advanced to the position where the next forward jetty blade 3a is to be formed, and the excavation tool 5 is abutted against that position, and then, as shown in Fig. 4(B), the excavation tool 5 is inserted into the metal plate 2 in the direction of the arrow at a predetermined angle θ1 by the driving device, and the blade portion 5a of the excavation tool 5 bites into one side of the metal plate 2, so that the next forward jetty blade 3b is formed at a position spaced apart from the forward jetty blade 3a formed by Fig. 4(A). The two forward jetty blades 3b formed in this way are spaced apart at equal intervals of approximately 3 mm to 10 mm. After that, the excavation tool 5 is returned to the original position and the metal plate 2 is advanced until it reaches the length at which the forward jetty blade 3a is to be formed.

After that, the metal plate 2 on which the multiple forward jetty blades 3a are formed is turned 180 degrees. Then, between the forward jetty blades 3a formed by the above-mentioned process, the reverse-direction small jetty blades 3b are formed to stand up, as shown in Fig. 4(C). The process of forming the small jetty blades 3b is the same as the process shown in Fig. 4(A) and (B) described above, but the difference from the forward jetty blades 3a described above is the height and orientation.

That is, after the excavation tool 5 is abutted at the position where the small jetty blade 3b is to be formed upright, as shown in Fig. 4(C), the excavation tool 5 is inserted into the metal plate 2 in the direction of the arrow at a predetermined angle θ1 by the driving device, and the blade portion 5a of the excavation tool 5 is caused to bite into the surface of the metal plate 2, so that the small jetty blade 3b is formed upright between the forward jetty blades 3a formed by Fig. 4(A). This small jetty blade 3b is formed at a predetermined height H2 of approximately 0.1 mm to 0.4 mm from the surface of the metal plate 2, and the tip of the small jetty blade 3b faces in the opposite direction to the forward jetty blade 3a. After that, the excavation tool 5 is returned to the origin and the metal plate 2 is advanced until it reaches the length where the small jetty blade 3b is to be formed.

The multiple forward jetty blades 3a and multiple small jetty blades 3b formed as described above have a cross section formed in a generally sawtooth shape. This is because, as shown in the figure, the inclination angle of the side surface that is in sliding contact with the sliding surface 5b of the excavation tool 5 relative to the surface of the metal plate 2 is formed at an obtuse angle, and the inclination angle of the other side surface is formed at an acute angle.

This callus scraper 1 can be used in two ways: rough scraping and finish scraping. For example, when the callus on a person's heel 6 is large, it is first used for rough scraping. In this case, as shown in Figure 5 (A), the callus scraper 1 is pressed against the heel 6 and moved so that the tip side of the forward jetty blade 3a is in the direction of travel indicated by the arrow. At this time, since the tip of the forward jetty blade 3a is formed at an acute angle, the tip of the forward jetty blade 3a can bite into the callus on the heel 6 and scrape off a large amount. By moving the callus scraper 1 while changing its position, the callus on the heel 6 is gradually scraped off.

After rough scraping is completed, or when there is little callus on the heel 6, finish scraping is performed. For finish scraping, as shown in Figure 5 (B), the callus scraper 1 is lightly pressed against the heel 6 and moved so that the tip side of the small jetty blade 3b is in the direction of movement indicated by the arrow. At this time, the height of the small jetty blade 3b is small, so it does not bite into the callus of the heel 6 to an excessively small extent, and so finish scraping is possible because only a small amount of callus is scraped off. When finish scraping is performed in this way, the tip of the forward jetty blade 3a faces in the opposite direction, so even if it is pressed against the heel 6 and moved, the tip simply slides and does not scrape off the callus. Therefore, no chattering occurs.

Fig. 6 shows another embodiment of the callus scraper 1 according to the present invention. Fig. 6(A) shows an example in which a reverse-direction jetty blade 3c, whose tip faces in the opposite direction to the forward-direction jetty blade 3a, is formed between a plurality of forward-direction jetty blades 3a formed upright on the surface of a metal plate 2. When using the callus scraper 1 having the forward-direction jetty blade 3a and the reverse-direction jetty blade 3c formed in a protruding manner in this way to scrape off callus generated on the heel 6 of a person shown in Fig. 5, the callus scraper 1 is pressed against the heel 6 and moved so that the tip side of the forward-direction jetty blade 3a faces the direction of travel, whereby the callus scraper 1 is scraped off. After that, by moving the callus scraper 1 in the reverse direction while pressing it against the heel 6, the callus scraper 1 is scraped off by the reverse-direction jetty blade 3c. In this way, by moving the callus scraper 1 back and forth, the callus on the heel 6 can be scraped off efficiently.

6(B) shows an example in which a plurality of forward jetty blades 3a are formed upright on the surface of the metal plate 2. When the callus scraper 1 having a plurality of the same forward jetty blades 3a formed thereon is used to scrape off callus formed on a person's heel 6, the callus scraper 1 is pressed against the heel 6 and moved so that the tip side of the forward jetty blade 3a faces the direction of travel, thereby scraping off the callus. The callus scraper 1 is then pulled back, and the callus scraper 1 is pressed against the heel 6 again and moved, thereby scraping off the callus. In this way, when only a plurality of forward jetty blades 3a are formed upright, even if the callus scraper 1 is pulled back while pressed against the heel 6, the forward jetty blade 3a slides over the callus, so no chattering occurs.

The present invention described above is not limited to these embodiments and can be modified in various ways without departing from the scope of the present invention. In the above-mentioned embodiments, an example was shown in which multiple jetty blades were formed to protrude at equal intervals on the surface of a metal plate, but they may be formed partially at unequal intervals depending on the usability of the callus scraper. In addition, multiple small jetty blades may be formed upright between multiple forward jetty blades. Furthermore, the multiple jetty blades may be formed at a predetermined angle with respect to the longitudinal direction of the callus scraper. In addition, the multiple forward jetty blades and the multiple small jetty blades may be formed to have partially different heights.

1 Callus scraper 2 Metal plate 3 Jetty blade 3a Forward jetty blade 3b Small jetty blade

Claims (1)

A callus scraper having a plurality of jetty blades formed on the surface of a metal plate,
The callus scraper is characterized in that the jetty blade has a small jetty blade formed in a sawtooth shape with a lower height than the forward jetty blades with their tips facing in the other direction protruding between a plurality of forward jetty blades with a predetermined height with their tips facing in one direction .

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