JP6918527B2 - scraper - Google Patents

Description

The present invention relates to a scraper for removing deposits with a flat blade.

Conventionally, as a scraper of this type, for example, the one shown in Patent Document 1 is known. The scraper shown in Patent Document 1 includes a head, a blade fixed to the tip of the head, and a grip portion attached to the rear end of the head.

According to this scraper, the depositor can be removed by pushing the scraper against the surface of the mating material such as the floor by rubbing the cutting edge.

Here, as is known, the blade fixed to the head extends from the tip of the head (the starting point of elastic deformation of the blade) to the cutting edge when the blade is pushed out with a constant force by rubbing the cutting edge against the surface of the mating material. The longer the length, the larger the amount of deflection, and the shorter the length from the starting point to the cutting edge, the smaller the amount of deflection. Utilizing this characteristic, conventionally, scrapers have been used properly according to the length from the starting point to the cutting edge as follows.

A blade with a long length from the starting point to the cutting edge can easily bend according to the unevenness even if the surface of the mating material to which the deposits are attached has irregularities. Therefore, for example, on a floor surface having many irregularities. It is used to remove attached deposits.

A blade with a short length from the starting point to the cutting edge is hard to bend even if the cutting edge is pressed against the surface of the mating material, so it is used, for example, to remove deposits firmly attached to the floor surface. ing.

However, for the scraper having the above configuration, it is necessary to properly use scrapers having different lengths from the starting point to the cutting edge depending on the surface properties of the mating material and the properties of the deposits, which inevitably complicates the work.

Further, since the scraper having the above configuration has a constant length from the starting point to the cutting edge and the rigidity and bending characteristics of the blade are predetermined, the blade according to the preference of the operator who uses the scraper. Rigidity and deflection characteristics cannot be set.

JP-A-2009-167654

The present invention has been made in view of the above points, and a technical object thereof is to provide a scraper capable of arbitrarily adjusting the rigidity and bending characteristics of the blade.

Scraper of the present invention comprises a head main body for holding a plate-shaped blade that elastically deformed fixedly, a grip portion was set vignetting opposite the cutting edge of said blade in said head body, toward the cutting edge of said blade It includes a displacement body which is displaced retractably from said head body Te, and characterized in that it comprises a deflection adjusting means to adjust the stiffness, the deflection characteristics of the blade by contacting the displacement body on the surface of the blade do.

According to the scraper of the present invention, the rigidity and bending characteristics of the blade can be arbitrarily adjusted.

It is a top view which shows the scraper of embodiment of this invention. It is a bottom view which shows the scraper of embodiment of this invention. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is a cross-sectional view of BB of FIG. It is a perspective view which shows the state which the displacement body of the scraper of embodiment of this invention is displaced. It is explanatory drawing which shows the state which extended the length from the contact part to the cutting edge in the scraper of embodiment of this invention. It is explanatory drawing which shows the state which shortened the length from the contact part to the cutting edge in the scraper of embodiment of this invention.

Next, the scraper according to the embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 4, the scraper 10 according to the present embodiment is provided on the head 20, the blade 30 fixed to the head 20, and the head 20 located on the side opposite to the blade 30. It is composed of a grip portion 21.

The grip portion 21 is a tubular member made of metal whose surface is covered with a rubber-like elastic body, and has a diameter increasing from the front end to the rear end, and the rear end has a substantially spherical shape. As a result, the grip portion 21 has a shape that is easy for the operator to grip. In the vicinity of the tip of the grip portion 21, a hole portion 21a for inserting an engaging pin 41a for fixing the neck portion 41 of the head 20, which will be described later, is formed.

The blade 30 is made of a flat metal plate that can be elastically deformed in the thickness direction, and a cutting edge 31 is formed at the tip of the blade 30. Further, in the vicinity of the rear end of the blade 30, a blade fixing hole 32 for screwing with the blade fixing screw 70 described later and a displacement body fixing hole 33 for screwing with the displacement body fixing screw 71 described later are formed. ing. Then, as shown in FIGS. 1 and 5, the blade 30 is inserted into and fixed to the head 20.

The head 20 is attached to the head body 40 so as to come into contact with the head body 40 that fixes the rear end of the blade 30, the neck 41 that extends from the head body 40 and is fixed to the grip portion 21, and the surface of the blade 30. It is composed of a displacement body 42 to be inserted, a displacement body 42, a blade 30 fixed to the head body 40, and a displacement body fixing portion 43 for fixing the displacement body 42 by inserting the head body 40.

When the neck portion 41 is inserted into the inner peripheral side of the grip portion 21, the neck portion 41 is coupled to the grip portion 21 by inserting an engaging pin 41a from the hole portion 21a of the grip portion 21 to the hole portion 41b of the neck portion 41.

As shown in FIGS. 3 and 4, the head main body 40 is made of metal, and has a blade fixing portion 50 extending from one end of the neck portion 41 and a lower surface side (lower side in FIG. 4) of the blade fixing portion 50. ), It is composed of a support portion 52 located at.

The blade fixing portion 50 is composed of a pair of arm portions 50a extending from one end of the neck portion 41 in a direction orthogonal to the cutting edge 31 of the blade 30, and has a flat Y-shape as a whole. A blade fixing hole 51 (FIG. 5) is formed at the base of each arm portion 50a. Further, on the lower surface side of the blade fixing portion 50, a concave guide groove 50b corresponding to the protrusion 61a of the slide portion 61 of the displacement body 42, which will be described later, is formed in a direction orthogonal to the cutting edge 31 of the blade 30.

The support portion 52 extends from the middle of each arm portion 50a of the blade fixing portion 50 toward the cutting edge 31, and has a flat rectangular shape as a whole. Further, a displacement body fixing hole 53, which will be described later, is formed substantially in the middle of the support portion 52.

The displacement body 42 is made of the same material as the head body 40, and includes a contact portion 60 that comes into contact with the surface of the blade 30 and a slide portion 61 that protrudes from the center of the contact portion 60.

The contact portion 60 has a shape extending parallel to the cutting edge 31 of the blade 30 so that the contact portion 60 evenly contacts the elastically deformed blade 30. Further, when the displacement body 42 is attached to the head body 40, the tip of the contact portion 60 is located closer to the cutting edge 31 than the tip of the head body 40. As a result, the contact portion 60 becomes a starting point when the blade 30 is elastically deformed.

As shown in FIG. 4, the slide portion 61 is raised with respect to the protrusion 61a attached to the guide groove 50b formed on the lower surface side of the blade fixing portion 50 and the upper side in FIG. 4, and the blade fixing portion 50. It is composed of a pair of raised portions 61b inserted between each arm portion 50a of the above. Both the protruding portion 61a and the raised portion 61b are slidably attached to the guide groove 50b of the blade fixing portion 50 and each arm portion 50a formed in the direction orthogonal to the cutting edge 31 of the blade 30. The contact portion 60 can be displaced between the tip of the head body 40 and the cutting edge 31. Further, a long hole-shaped positioning groove 62 is formed between the pair of raised portions 61b in a direction orthogonal to the cutting edge 31 of the blade 30, and the displacement body fixing portion described later is formed in the positioning groove 62. 43 is attached. Further, the positioning groove 62 communicates with the displacement body fixing hole 33 formed in the blade 30 and the displacement body fixing hole 53 formed in the support portion 52.

As shown in FIGS. 1 and 4, the displacement body fixing portion 43 includes a displacement body fixing screw 71 and a washer mounted on the outer peripheral side of the displacement body fixing screw 71, and is formed on the slide portion 61. It is inserted into the positioning groove 62, the displacement body fixing hole 33 formed in the blade 30, and the displacement body fixing hole 53 formed in the support portion 52. As a result, the slide portion 61 can be displaced between both ends of the positioning groove 62 of the slide portion 61. Then, by tightening the displacement body fixing screw 71, the slide portion 61 is tightened to fix the displacement body 42.

Next, the procedure for assembling the scraper 10 according to the present embodiment will be described.

First, the protrusion 61a formed on the displacement body 42 is inserted into the guide groove 50b, and the raised portion 61b is inserted between the raised portion 61b and each arm portion 50a of the blade fixing portion 50 to fix the blade in the head body 40. The displacement body 42 is inserted between the 50 and the support portion 52. As a result, an insertion groove C for inserting the blade 30 is formed between the displacement body 42 and the support portion 52.

Next, the blade 30 is inserted into the insertion groove C, and the blade fixing screw 70 is inserted into the blade fixing hole 51 formed in the blade fixing portion 50 and the blade fixing hole 32 formed in the blade 30 and screwed. As a result, the blade 30 is fixed to the blade fixing portion 50.

Next, the displacement body fixing screw 71 is inserted into the positioning groove 62 of the slide portion 61, the displacement body fixing hole 33 formed in the blade 30, and the displacement body fixing hole 53 formed in the support portion 52, and screwed. As a result, the displacement body fixing screw 71 tightens the slide portion 61. As a result, the displacement body 42 is fixed to the blade fixing portion 50. The fixed position of the displacement body 42 will be described in detail later.

Next, a method of displacing the displacement body 42 of the scraper 10 according to the present embodiment will be described.

First, by loosening the displacement body fixing screw 71, the tightening on the slide portion 61 is released. As a result, the slide portion 61 can be displaced between one end and the other end of the positioning groove 62.

Then, after the slide portion 61 is displaced so that the contact portion 60 is at a desired position, the displacement body fixing screw 71 is tightened again to tighten the slide portion 61 and fix the displacement body 42.

Next, a method of removing deposits by the scraper 10 according to the present embodiment will be described.

After gripping the grip portion 21 by hand, the operator brings the blade edge 31 of the blade 30 into contact with, for example, the deposits adhering to the floor surface. Then, the worker pushes out the scraper 10 by rubbing the cutting edge 31 against the surface of the mating material such as the floor, so that the cutting edge 31 scrapes the deposits and removes the deposits.

When the length from the contact portion 60 to the cutting edge 31 is lengthened during the work of removing the deposits, the blade 30 is likely to be elastically deformed with the contact portion 60 as a fulcrum, as shown in FIG. As a result, the amount of deflection of the blade 30 increases. As a result, the blade 30 having a long length from the contact portion 60 to the cutting edge 31 can easily bend according to the unevenness even if the floor surface to which the deposit is attached has unevenness. Therefore, for example, the unevenness It is preferable to use it when removing deposits adhering to a floor surface with a large amount of water.

On the other hand, when the length from the contact portion 60 to the cutting edge 31 is shortened during the work of removing the deposits, the blade 30 is elastically deformed with the contact portion 60 as a fulcrum as shown in FIG. It becomes difficult to do so, and the amount of deflection of the blade 30 is reduced. As a result, the blade 30 having a short length from the contact portion 60 to the cutting edge 31 does not easily bend even if the cutting edge 31 is pressed against the floor surface or the like. Therefore, for example, deposits stuck to the floor surface. It is preferable to use it when removing.

As described above, according to the scraper 10 according to the present embodiment, the amount of deflection of the blade 30 is changed according to the displacement position of the contact portion 60 of the displacement body 42 without changing the fixed position of the blade 30 with respect to the head 20. be able to. This eliminates the need to properly use the scraper 10 according to the properties of the floor surface and the deposits, and it is possible to set the degree of deflection according to the operator who uses the scraper 10.

Further, according to the scraper 10 according to the present embodiment, the positioning groove 62 of the displacement body 42 has an elongated hole shape in the direction orthogonal to the cutting edge 31 of the blade 30, and the contact portion 60 forms the surface of the blade 30. Sliding. As a result, the scraper 10 according to the present embodiment can freely change the displacement position of the displacement body 42, so that the degree of deflection of the blade 30 in contact with the contact portion 60 of the displacement body 42 can be freely adjusted. can.

Further, according to the scraper 10 according to the present embodiment, only by changing the position where the contact portion 60 comes into contact with the surface of the blade 30 by loosening the displacement body fixing screw 71 and displace the slide portion 61. The degree of deflection of the blade 30 can be easily changed. In particular, since the displacement body 42 can be displaced without removing the blade 30 from the head body 40, it is not necessary to prepare a plurality of blades 30 to be fixed to the head body 40.

Further, according to the scraper 10 according to the present embodiment, since the contact portion 60 has a shape extending parallel to the cutting edge 31 of the blade 30, the blade 30 is evenly distributed when the scraper 10 removes deposits. Can be bent.

Further, according to the scraper 10 according to the present embodiment, since the displacement body 42 is housed in the head body 40, it is not necessary to increase the size of the scraper according to the prior art.

The configuration for arbitrarily adjusting the rigidity and deflection characteristics of the blade 30 is not limited to the one described in the above embodiment, and for example, the blade 30 is displaced with respect to the head body 40 so as to be in a desired position. , The amount of deflection of the blade 30 may be changed.

Further, the shape of the flat plate-shaped blade 30 is not limited to the one having a flat shape when the cutting edge 31 is viewed from the front, and may have a concave-convex shape, for example.

10 Scraper 20 Head 21 Grip 21a Hole 30 Blade 31 Blade tip 32 Blade fixing hole 33 Displacement body fixing hole 40 Head body 41 Neck 41a Engagement pin 41b Hole 42 Displacement body 43 Displacement body fixing part 50 Blade fixing part 50a Arm 50b Guide groove 51 Blade fixing hole 52 Support part 53 Displacement body fixing hole 60 Contact part 61 Sliding part 61a Protrusion part 61b Raised part 62 Positioning groove 70 Blade fixing screw 71 Displacement body fixing screw C Insertion groove

Claims (4)

A head body that fixedly holds a flat blade that deforms elastically,
A grip portion was set vignetting on the side opposite the cutting edge of said blade in said head body,
Includes a displacement body which is displaced retractably from said head body toward the cutting edge of the blade, the rigidity of the blade displacement body by contacting the surface of the blade, and bending adjustment means for the deflection characteristics adjustment,
A scraper characterized by being equipped with. In the scraper according to claim 1,
The displacement body is
A contact portion which contacts the surface of the blade, the front Symbol blades by pressing the blade elastically deforms to determine a starting point at the time of elastic deformation,
A setting unit for variably setting the position of the contact portion between the tip of the head body and the cutting edge of the blade, and a setting unit.
A scraper characterized by containing. In the scraper according to claim 1 or 2.
The tip of the head body is provided with a step portion that drops in a direction away from the cutting edge of the blade.
A scraper constructed so that the displacement body enters the step portion. In the scraper according to any one of claims 1 to 3.
The head body is constructed so as to hold the blade detachably.
When the side end of the blade is viewed in a direction parallel to the plane of the blade, the displacement body is provided so as to expose the side end of the blade at least in a range from the blade edge of the blade to the tip of the head body. A scraper with a side view shape.

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