JP2020175769A - Foreign object removal tool for tire - Google Patents

Abstract

To provide a foreign object removal tool for a tire which easily removes foreign objects entering into a groove part of a tire while inhibiting damage of the tire.SOLUTION: A foreign object removal tool for a tire includes: a shaft-like body part 10; a holding part 11 which is provided at one axial end side in the body part 10 and held by a worker; and a scoop part 21 which is provided at the other axial end side in the body part and enters into the groove part 101. An outer edge of an axial tip in the scoop part 21 has a tapered curve shape. The scoop part 21 has an arch shaped cross section which contacts with at least one side wall part 101a and a bottom part 101b of the groove part 101 in a state where the scoop part 21 enters into the groove part 101.SELECTED DRAWING: Figure 11

Description

The present invention belongs to the technical field relating to a foreign matter removing tool for a tire for removing foreign matter that has entered the groove of a tire.

Conventionally, when a foreign substance such as a stone is caught in a groove of a tire, it has been removed by using a screwdriver or a special tool.

For example, Patent Document 1 includes a foreign matter remover having a wide rear portion, a narrow middle portion, and a bifurcated front portion, and a hook-shaped portion protruding from the front end, and a main frame. A foreign matter removing tool is disclosed which includes a foreign matter detecting tool having a tip connecting plate on the frame and a mirror at the frame tip at the tip of the frame.

JP-A-2018-11147

By the way, if a driver is used to remove foreign matter sandwiched between the grooves of the tire as in the conventional case, the tire may be damaged at the corners of the driver and the tire may be deteriorated. Even in the foreign matter removing tool described in Patent Document 1, since it is the hook-shaped foreign matter removing tool that actually removes the foreign matter, there is a high possibility that the tip of the foreign matter removing tool will damage the tire.

Further, the foreign matter removing tool described in Patent Document 1 is troublesome because it is necessary to remove the foreign matter one by one while detecting the foreign matter by the foreign matter detecting tool.

The present invention has been made in view of these points, and an object of the present invention is to easily remove foreign matter that has entered a groove of a tire while suppressing damage to the tire.

In order to solve the above problems, the present invention targets a foreign matter removing tool for a tire for removing foreign matter that has entered the groove of the tire, and has a shaft-shaped main body and one end side of the main body in the axial direction. A grip portion provided in the above and gripped by an operator, and an action portion provided on the other end side of the main body portion in the axial direction and penetrating into the groove portion, and the tip of the action portion in the axial direction. The outer edge of the tire has a tapered curved shape, and the working portion has a bow-shaped cross section that contacts at least one side wall portion and the bottom portion of the groove portion in a state where the working portion penetrates the groove portion. It was configured as.

According to this configuration, since the outer edge of the tip of the working portion that penetrates the groove has a tapered curved shape, it is easy for the operator to penetrate the working portion into the groove of the tire, and the groove of the tire is formed. Hard to hurt. Further, since the working portion comes into contact with at least one side wall portion and the bottom portion of the groove portion in a state of entering the groove portion of the tire, foreign matter can be scraped out from the side surface side and the bottom surface side of the groove portion. Therefore, foreign matter that has entered the groove of the tire can be easily removed. Therefore, foreign matter that has entered the groove of the tire can be easily removed while suppressing damage to the tire.

In the foreign matter removing tool for tires, the working portion may have a semi-cylindrical cross section.

According to this configuration, the foreign matter can be removed even when the groove width of the groove portion of the tire is relatively wide. As a result, foreign matter that has entered the groove of the tire can be removed more easily.

In the foreign matter removing tool for tires, the thickness of the tip side of the working portion may be thinner than the thickness of the base end side of the working portion.

According to this configuration, it becomes easy to insert the working portion between the side wall portion of the groove portion and the foreign matter, and between the bottom portion of the groove portion and the foreign matter. As a result, foreign matter that has entered the groove of the tire can be removed more easily.

In the foreign matter removing tool for tires, the thickness of the tip of the working portion may be thinner as it is closer to the tip.

According to this configuration, it becomes easier to insert the working portion between the side wall portion of the groove portion and the foreign matter, and between the bottom portion of the groove portion and the foreign matter. As a result, foreign matter that has entered the groove of the tire can be removed more easily.

As described above, according to the tip tool according to the present invention, it is possible to easily remove foreign matter that has entered the groove portion of the tire while suppressing damage to the tire.

It is a top view of the foreign matter removing tool which concerns on embodiment of this invention. It is a bottom view of the foreign matter removal tool. It is a front view of the foreign matter removal tool. It is a right side view of the foreign matter removal tool. It is a left side view of the foreign matter removal tool. It is sectional drawing of the working part of the foreign matter removing tool. It is a vertical sectional view of the working part of the foreign matter removing tool. It is a figure which illustrates the shape of the groove part of the tire which a foreign matter removing tool invades. It is the schematic which shows the operation which removes the foreign matter pinched in the groove part by the foreign matter removing tool. It is sectional drawing which shows the positional relationship between the foreign matter removing tool and foreign matter, and shows the case where the groove part of a tire is relatively wide. It is sectional drawing which shows the positional relationship between the foreign matter removing tool and foreign matter, and shows the case where the groove part of a tire is relatively narrow. It is sectional drawing which shows the modification of the foreign matter removal tool. It is a perspective view which shows the other modification of the foreign matter removal tool.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 5 show a foreign matter removing tool 1 according to the present embodiment. The foreign matter removing device 1 is a tool for invading the groove 101 of the tire 100 and removing foreign matter such as stones sandwiched between the grooves 101. Although not shown, the rear view of the foreign matter removing tool 1 is symmetrical with the front view shown in FIG.

As shown in FIGS. 1 to 5, the foreign matter removing tool 1 includes a shaft-shaped main body 10. The main body 10 is composed of, for example, a metal shaft having a circular cross section.

A grip portion 11 to be gripped by an operator is provided on one end side of the main body portion 10 in the axial direction. The grip portion 11 is knurled. This knurling makes the hands of the operator who grips the grip 11 less slippery. It is desirable that this knurling process is performed only on a part of the grip portion 11 in the circumferential direction. This is because the orientation of the scoop portion 21, which will be described later, can be grasped even if the scoop portion 21 is not visible.

The grip portion 11 is provided with a through hole 12 that penetrates the grip portion 11 in a direction orthogonal to the central axis. The through hole 12 is a hole for attaching a strap or the like. As a result, if the work is performed with the strap or the like wrapped around the hand, the foreign matter removing tool 1 can be suppressed from falling. In addition, the orientation of the scoop portion 21, which will be described later, can be grasped to some extent by the through hole 12.

On the other end side of the main body 10 in the axial direction, a scoop portion (acting portion) 21 that penetrates the groove 101 and removes foreign matter is provided. A connecting portion 22 for connecting the scoop portion 21 and the main body portion 10 is formed on one end side of the scoop portion 21 in the axial direction.

As shown in FIGS. 3 and 4, the scoop portion 21 is formed in a half portion in a direction orthogonal to the axis of the main body portion 10. The scoop portion 21 has a groove shape. The length of the scoop portion 21 in the depth direction is about half the length of the scoop portion 21 in the width direction.

As shown in FIGS. 1 and 2, the scoop portion 21 includes a scoop tip portion 21a having a tapered outer edge and a scoop base end portion extending toward the one end side in the axial direction of the scoop tip portion 21a. It has 21b and.

As shown in the scoop tip 21a, FIGS. 1 and 2, the scoop tip 21a has a semi-elliptical outer edge. As shown in FIG. 3, the scoop tip portion 21a is tapered toward the tip even when viewed from the side. As shown in FIG. 4, the scoop tip portion 21a has a bow shape when viewed from the tip side. As shown in FIG. 7, the thickness of the scoop tip portion 21a is thinner than the thickness of the scoop base end portion 21b. More specifically, the thickness of the scoop tip portion 21a becomes thinner as it approaches the tip.

As shown in FIGS. 1 and 2, the scoop base end portion 21b extends to the connecting portion 22 with a constant width. As shown in FIG. 5, the scoop base end portion 21b has a bow-shaped cross section, more particularly a semi-cylindrical cross section. The thickness of the scoop base end portion 21b is constant throughout the scoop base end portion 21b. The portion of the scoop base end portion 21b near the connecting portion 22 has a semi-conical hollow shape as shown in FIGS. 1, 5, and 7. As will be described in detail later, the cross-sectional shape of the scoop base end portion 21b is a semi-cylinder such that the scoop portion 21 comes into contact with at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 in a state where the scoop portion 21 has penetrated into the groove portion 101. It is a cylinder.

The connecting portion 22 extends from the scoop base end portion 21b toward the one end side in the axial direction while remaining semi-cylindrical, and then gradually expands in cross-sectional area so as to become cylindrical.

Next, the shape of the groove 101 of the tire 100 in which the foreign matter removing tool 1 penetrates will be described. FIG. 8 shows an example of a pattern of the groove 101 in which the foreign matter can be removed by the foreign matter removing tool 1. The pattern of the groove 101 is a rib type (shown in FIG. 8A) having a straight or zigzag (zigzag in FIG. 8) continuous groove in the circumferential direction of the tire 100, substantially perpendicular to the circumferential direction of the tire 100. A groove is formed by a lug type having an extending groove (shown in FIG. 8B), a rib lug type having both a rib type pattern and a lug type pattern (shown in FIG. 8C), and an independent block. There is a block type (shown in FIG. 8D) and the like. In each of the groove portions 101, the groove width of the groove portion 101 is set to about 5 to 10 mm.

FIG. 9 shows an operation of removing the foreign matter caught in the groove 101 by the foreign matter removing tool 1. In FIG. 9, the tire 100 is a rib-shaped tire having a groove on a straight line. In the foreign matter removing tool 1 according to the present embodiment, the foreign matter removing tool 1 is inserted in a state where the scoop portion 21 is inserted into the groove portion 101 so that the axial direction of the main body portion 10 is oblique to the radial direction of the tire 100. By moving along the groove 101, foreign matter caught in the groove 101 is removed.

The foreign matter removing tool 1 according to the present embodiment can remove foreign matter even in groove portions 101 having different widths by changing the direction of the scoop portion 21. For example, as shown in FIG. 10, it is assumed that the stone S is sandwiched as a foreign substance in the groove 101 having a relatively wide groove width of the tire 100 (the length of the scoop portion 21 in the width direction is about the same). At this time, the scoop portion 21 is made to penetrate into the groove portion 101 so that the open side of the scoop portion 21 faces the open side of the groove portion 101. At this time, the scoop portion 21 (particularly, the scoop base end portion 21b) comes into contact with both side wall portions 101a and the bottom portion 101b of the groove portion 101. Then, if the foreign matter removing tool 1 is moved along the groove 101, the scoop portion 21 invades between the side wall portions 101a on both sides of the groove 101 and the stone S and between the bottom 101b and the stone S. From this state, when the foreign matter removing tool 1 is further moved along the groove portion, the stone S is scraped out by the scoop portion 21.

On the other hand, as shown in FIG. 11, it is assumed that the stone S is sandwiched as a foreign substance in the groove 101 where the groove width of the tire 100 is relatively narrow (narrower than the length of the scoop portion 21 in the width direction). At this time, the scoop portion 21 is made to enter the groove portion 101 so that the open side of the scoop portion 21 faces the side wall portion 101a of the groove portion 101. At this time, the scoop portion 21 (particularly, the scoop base end portion 21b) comes into contact with one side wall portion 101a and the bottom portion 101b of the groove portion 101. Then, if the foreign matter removing tool 1 is moved along the groove 101, the scoop portion 21 penetrates between one side wall 101a of the groove 101 and the stone S and between the bottom 101b and the stone S. From this state, when the foreign matter removing tool 1 is further moved along the groove portion, the stone S can be scraped out from the groove portion 101. At this time, as shown in FIG. 11, the stone S moves toward the other side wall portion 101a of the groove portion 101 by the thickness of the scoop base end portion 21b, and the groove portion 101 is slightly deformed. However, this deformation is a slight deformation that does not affect the deterioration of the tire 100, and therefore does not cause any particular problem.

As shown in FIGS. 10 and 11, the scoop portion 21 has a bow shape such that the scoop portion 21 comes into contact with at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 in a state where the scoop portion 21 has penetrated into the groove portion 101. By having the cross section, the scoop portion 21 can be appropriately penetrated between the foreign matter and the groove portion 101, and the foreign matter caught in the groove portion 101 of the tire 100 can be easily removed.

FIG. 12 shows a modified example of the foreign matter removing tool 1 according to the present embodiment. In this modified example, the cross section of the scoop base end portion 21b is not a semi-cylindrical shape but a bow shape. The bow shape is set so that the scoop portion 21 comes into contact with at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 while the scoop portion 21 has entered the groove portion 101. By forming the cross section of the scoop base end portion 21b into such a bow shape, even if a foreign matter enters the groove portion 101 having a narrower groove width, the foreign matter can be removed from the groove portion 101.

FIG. 13 shows another modification of the foreign matter removing tool 1 according to the present embodiment. In this modified example, a collection case 200 for temporarily collecting foreign matter scraped from the groove 101 of the tire 100 is attached. As a result, it is possible to prevent the foreign matter scraped from the groove 101 of the tire 100 from scattering around the tire 100, so that when the vehicle having the tire 100 starts again, the removed foreign matter invades the groove 101 again. It can be suppressed.

Therefore, in the present embodiment, the shaft-shaped main body portion 10, the grip portion 11 provided on one end side of the main body portion 10 in the axial direction and gripped by the operator, and the other end of the main body portion 10 in the axial direction. A scoop portion 21 provided on the side and penetrating into the groove portion 101 of the tire 100 is provided, and the outer edge of the tip of the scoop portion 21 in the axial direction (the outer edge of the scoop tip portion 21a) has a tapered curved shape. The scoop portion 21 has an arch-shaped cross section that contacts at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 in a state where the scoop portion 20 has penetrated into the groove portion 101. As a result, foreign matter that has entered the groove 101 of the tire 100 can be easily removed while suppressing damage to the tire 100. That is, since the outer edge of the tip of the scoop portion 21 that penetrates the groove portion 101 has a tapered curved shape, the operator can easily penetrate the scoop portion 21 into the groove portion 101 of the tire 100, and the tire 100 It is difficult to damage the groove 101 of the tire. Further, since the scoop portion 21 comes into contact with at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 while invading the groove portion 101 of the tire 100, foreign matter is scraped out from the side surface side and the bottom surface side of the groove portion 101. Can be done. Therefore, foreign matter that has entered the groove of the tire can be easily removed.

Further, in the present embodiment, the thickness of the tip end side (scoop tip portion 21a) of the scoop portion 21 is thinner than the thickness of the base end side (scoop base end portion 21b) of the scoop portion 21. This makes it easier to insert the working portion between the side wall portion 101a of the groove portion 101 and the foreign matter, and between the bottom portion 101b of the groove portion 101 and the foreign matter. As a result, foreign matter that has entered the groove 101 of the tire 100 can be removed more easily.

In particular, in the present embodiment, the thickness of the tip portion (scoop tip portion 21a) of the scoop portion 21 is thinner as it is closer to the tip. This makes it easier to insert the scoop portion 21 between the side wall portion 101a of the groove portion 101 and the foreign matter, and between the bottom portion 101b of the groove portion 101 and the foreign matter. As a result, the foreign matter that has entered the groove 101 of the tire 100 can be removed more easily.

The present invention is not limited to the above embodiment, and can be substituted within a range that does not deviate from the gist of the claims.

For example, when knurling is applied to the entire grip portion 11, the grip portion 11 may be provided with a recess or a protrusion so that the orientation of the scoop portion 21 can be known.

The above embodiments are merely examples, and the scope of the present invention should not be construed in a limited manner. The scope of the present invention is defined by the scope of claims, and all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

The present invention is useful as a foreign matter removing tool for a tire for removing foreign matter that has entered the groove of the tire.

1 Foreign matter removal tool 10 Main body 11 Grip 21 Scoop (working part)
21a Scoop tip (the tip side of the working part)
21b Scoop base end (the part on the base end side of the working part)

Claims (4)

A foreign matter removal tool for tires for removing foreign matter that has entered the groove of the tire.
Shaft-shaped body and
A grip portion provided on one end side in the axial direction of the main body portion and gripped by an operator, and a grip portion.
It is provided on the other end side of the main body portion in the axial direction, and includes an action portion that penetrates the groove portion.
The outer edge of the tip in the axial direction of the working portion has a tapered curved shape.
The working portion is a foreign matter removing tool for a tire, characterized in that the working portion has a bow-shaped cross section in contact with at least one side wall portion and the bottom portion of the groove portion in a state where the working portion has penetrated into the groove portion. In the foreign matter removing tool for tires according to claim 1.
The working portion is a foreign matter removing tool for tires, which has a semi-cylindrical cross section. In the foreign matter removing tool for tires according to claim 1 or 2.
A foreign matter removing tool for tires, characterized in that the thickness of the tip side of the working portion is thinner than the thickness of the base end side of the working portion. In the foreign matter removing tool for tires according to any one of claims 1 to 3.
A foreign matter removing tool for tires, wherein the thickness of the tip of the working portion is thinner as it is closer to the tip.

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