JP7193850B2 - Foreign matter removal tool for tires - Google Patents

Description

TECHNICAL FIELD The present invention belongs to a technical field related to a tire foreign matter removing tool for removing foreign matter that has entered grooves of a tire.

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

For example, Patent Literature 1 discloses a foreign matter remover having a wide rear portion, a narrow middle portion, and a bifurcated tip portion, with a hook-shaped portion protruding from the end of the tip portion, and a frame as a main body. A foreign matter removing tool is disclosed which has a foreign matter detector provided with a front connection plate on the frame and a mirror at the front end of the frame.

JP 2018-111475 A

By the way, if a screwdriver is used to remove foreign matter caught in the grooves of the tire as in the conventional method, the corners of the screwdriver may damage the tire, resulting in deterioration of the tire. Even in the foreign matter removing tool described in Patent Document 1, since the hook-shaped foreign matter removing tool 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 Literature 1 is troublesome because the foreign matter must be removed one by one while the foreign matter is being detected by the foreign matter detector.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to easily remove foreign matter that has entered grooves of a tire while suppressing damage to the tire.

In order to solve the above problems, the present invention is directed to a tire foreign matter removing tool for removing foreign matter that has entered a groove of a tire. and an action portion provided on the other end side of the body portion in the axial direction and entering the groove portion, wherein the tip of the action portion in the axial direction has a tapered curved outer edge, and the working portion has an arcuate cross section that contacts at least one side wall and the bottom of the groove when the working portion enters the groove. It was configured as

According to this configuration, the working portion that enters the groove portion has a tapered outer edge at the tip, so that the worker can easily insert the working portion into the groove portion of the tire. Not easy to damage. In addition, since the working portion contacts 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, it is possible to easily remove the foreign matter that has entered the groove of the tire. Therefore, it is possible to easily remove the foreign matter that has entered the groove of the tire while suppressing damage to the tire.

In the tire foreign matter removing tool, 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. This makes it possible to more easily remove foreign matter that has entered the grooves of the tire.

In the tire foreign matter removing tool, the thickness of the working portion on the distal end side may be thinner than the thickness of the working portion on the proximal end side.

With this configuration, it becomes easier to insert the action portion between the side wall of the groove and the foreign object and between the bottom of the groove and the foreign object. This makes it possible to more easily remove foreign matter that has entered the grooves of the tire.

In the foreign matter removing tool for tires, the thickness of the tip portion of the working portion may be thinner toward the tip.

With this configuration, it becomes easier to insert the action portion between the side wall portion of the groove and the foreign matter and between the bottom portion of the groove and the foreign matter. This makes it possible to more easily remove foreign matter that has entered the grooves of the tire.

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

1 is a plan view of a foreign matter removing tool according to an embodiment of the present invention; FIG. It is a bottom view of a foreign material removal tool. It is a front view of a foreign material removal tool. It is a right side view of a foreign material removal tool. It is a left side view of a foreign material removal tool. FIG. 4 is a cross-sectional view of the working portion of the foreign matter removing tool; It is a longitudinal cross-sectional view of the working portion of the foreign matter removing tool. It is a figure which illustrates the shape of the groove part of a tire which a foreign material removal tool penetrates. FIG. 4 is a schematic diagram showing an operation of removing foreign matter caught in a groove by a foreign matter removing tool; FIG. 4 is a cross-sectional view showing the positional relationship between the foreign matter removing tool and the foreign matter, showing a case where the groove portion of the tire is relatively wide; FIG. 4 is a cross-sectional view showing the positional relationship between the foreign matter removing tool and the foreign matter, showing a case where the groove portion of the tire is relatively narrow; It is a cross-sectional view showing a modification of the foreign matter removing tool. FIG. 11 is a perspective view showing another modification of the foreign matter removing tool;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

1 to 5 show a foreign matter removing tool 1 according to this embodiment. This foreign matter removing device 1 is a tool for penetrating into a groove portion 101 of a tire 100 and removing a foreign matter such as a stone caught in the groove portion 101 . Although not shown, the rear view of the foreign matter removing tool 1 is bilaterally symmetrical to the front view shown in FIG.

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

A grip portion 11 that is gripped by an operator is provided on one end side of the body portion 10 in the axial direction. The grip portion 11 is knurled. Due to this knurling, the operator's hand gripping the grip portion 11 is less likely to slip. In addition, it is desirable that this knurling is applied only to a portion 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 cannot be seen.

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. This through hole 12 is a hole for attaching a strap or the like. As a result, it is possible to prevent the foreign matter removing tool 1 from falling when working with a strap or the like wrapped around the hand. Further, the orientation of the scoop portion 21 described later can be grasped to some extent by the through hole 12 .

A scoop portion (action portion) 21 that penetrates into the groove portion 101 to remove foreign matter is provided on the other end side of the main body portion 10 in the axial direction. A connection portion 22 that connects the scoop portion 21 and the main body portion 10 is formed on the one end side of the scoop portion 21 in the axial direction.

3 and 4, the scoop portion 21 is formed in a half portion of the body portion 10 in a direction orthogonal to the axis. The scoop portion 21 has a groove shape. The length of the scoop portion 21 in the depth direction is approximately 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 of the scoop tip portion 21a in the axial direction. 21b.

Scoop Tip 21a As shown in FIGS. 1 and 2, the scoop tip 21a has a semi-elliptical outer edge. As shown in FIG. 3, the scoop tip portion 21a tapers toward the tip 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 end 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 toward 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. The scoop base end 21b has an arcuate, more specifically semi-cylindrical cross-section, as shown in FIG. The thickness of the scoop base end portion 21b is uniform throughout the scoop base end portion 21b. A portion of the scoop base end portion 21b near the connecting portion 22 is hollowed out in a semi-conical shape as shown in FIGS. Although details will be described later, the cross-sectional shape of the scoop base end portion 21b is a semi-cylindrical shape such that when the scoop portion 21 enters the groove portion 101, it contacts at least one side wall portion 101a and the bottom portion 101b of the groove portion 101. shape.

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

Next, the shape of the groove portion 101 of the tire 100 into which the foreign matter removing tool 1 enters will be described. FIG. 8 shows an example of a pattern of grooves 101 from which foreign matter can be removed by the foreign matter removing tool 1. As shown in FIG. The pattern of the grooves 101 may be a rib type (shown in FIG. 8(a)) having continuous grooves in straight lines or zigzags (zigzags in FIG. 8) in the circumferential direction of the tire 100, and A lug type with an extending groove (shown in FIG. 8(b)), a rib-lug type with both a rib pattern and a lug pattern (shown in FIG. 8(c)), and a separate block forming the groove. and a block type (shown in FIG. 8(d)). The groove width of each groove 101 is set to about 5 to 10 mm.

FIG. 9 shows the operation of removing a foreign substance caught in the groove 101 by the foreign substance removing tool 1. FIG. In FIG. 9, the tire 100 is a rib type tire having straight grooves. In the foreign matter removing tool 1 according to this embodiment, 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, and the foreign matter removing tool 1 is removed. By moving along the groove portion 101, foreign matter caught in the groove portion 101 is removed.

The foreign matter removing tool 1 according to the present embodiment can remove foreign matter from 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 a stone S is caught as a foreign matter in a groove portion 101 of a tire 100 having a relatively wide groove width (the length in the width direction of the scoop portion 21 is about the same). At this time, the open side of the scoop portion 21 faces the open side of the groove portion 101 and the scoop portion 21 is inserted into the groove portion 101 . At this time, the scoop portion 21 (particularly, the scoop base end portion 21b) contacts both side wall portions 101a and the bottom portion 101b of the groove portion 101. As shown in FIG. When the foreign matter removing tool 1 is moved along the groove 101, the scoop 21 enters between the side walls 101a of the groove 101 and the stone S and between the bottom 101b and the stone S. When the foreign matter removing tool 1 is further moved along the groove from this state, the stone S is scraped out by the scoop portion 21 .

On the other hand, as shown in FIG. 11, it is assumed that a stone S is caught as a foreign matter in a groove portion 101 having a relatively narrow groove width (narrower than the length of the scoop portion 21 in the width direction) of the tire 100 . At this time, the open side of the scoop portion 21 faces the side wall portion 101a of the groove portion 101 and the scoop portion 21 is inserted into the groove portion 101 . At this time, the scoop portion 21 (particularly, the scoop base end portion 21b) contacts one side wall portion 101a of the groove portion 101 and the bottom portion 101b. When the foreign matter removing tool 1 is moved along the groove 101, the scoop portion 21 enters between one side wall portion 101a of the groove portion 101 and the stone S and between the bottom portion 101b and the stone S. From this state, the stone S can be scraped out from the groove portion 101 by further moving the foreign matter removing tool 1 along the groove portion. 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, thereby deforming the groove portion 101 slightly. However, since this deformation is a slight deformation that does not affect deterioration of the tire 100, it does not pose a particular problem.

As shown in FIGS. 10 and 11, the scoop portion 21 has an arcuate shape that contacts at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 when the scoop portion 21 enters the groove portion 101. By having the cross section, the scoop portion 21 can be properly inserted 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 modification of the foreign matter removing tool 1 according to this embodiment. In this modification, the cross section of the scoop base end portion 21b is not semi-cylindrical but arcuate. This arcuate shape is set so that when the scoop portion 21 enters the groove portion 101 , it contacts at least one side wall portion 101 a and bottom portion 101 b of the groove portion 101 . By forming the cross section of the scoop base end portion 21b into such an arcuate shape, even if 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 this embodiment. In this modified example, a collection case 200 is attached to temporarily collect foreign matter scraped out from the groove portion 101 of the tire 100 . As a result, it is possible to suppress the foreign matter scraped out from the groove portion 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 enters the groove portion 101 again. It is possible to suppress the loss.

Therefore, in the present embodiment, the shaft-shaped body portion 10, the grip portion 11 provided at one end side of the body portion 10 in the axial direction and gripped by the operator, and the other end of the body portion 10 in the axial direction The scoop portion 21 is provided on the side and enters the groove portion 101 of the tire 100, and the outer edge of the tip of the scoop portion 21 in the axial direction (the outer edge of the tip portion 21a of the scoop) has a tapered curved shape, The scoop portion 21 has an arcuate cross section that contacts at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 when the scoop portion 20 enters the groove portion 101 . This makes it possible to easily remove foreign matter that has entered the groove portion 101 of the tire 100 while suppressing damage to the tire 100 . That is, since the scoop portion 21 that enters the groove portion 101 has a tapered outer edge at its tip, the operator can easily insert the scoop portion 21 into the groove portion 101 of the tire 100. It is hard to damage the groove part 101 of. In addition, since the scoop portion 21 contacts at least one side wall portion 101a and the bottom portion 101b of the groove portion 101 in a state of entering the groove portion 101 of the tire 100, the scoop portion 21 scrapes out foreign matter from the side surface side and the bottom surface side of the groove portion 101. can be done. Therefore, it is possible to easily remove the foreign matter that has entered the groove of the tire.

Further, in the present embodiment, the thickness of the scoop portion 21 on the tip end side (scoop tip end portion 21a) is thinner than the thickness on the scoop portion 21 on the base end side (scoop base end portion 21b). This makes it easier to insert the action 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. This makes it possible to more easily remove the foreign matter that has entered the groove portion 101 of the tire 100 .

In particular, in the present embodiment, the thickness of the tip of the scoop portion 21 (the tip of the scoop 21a) is thinner toward 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 portion 101 of the tire 100 can be removed more easily.

The present invention is not limited to the above embodiments, and substitutions are possible without departing from the scope of the claims.

For example, when knurling is applied to the entire gripping portion 11, the gripping portion 11 may be provided with a depression or a projection so that the direction of the scoop portion 21 can be known.

The above-described embodiments are merely examples, and should not be construed as limiting the scope of the present invention. The scope of the present invention is defined by the scope of claims, and all variations and modifications within the equivalent scope of the claims are within the scope of the invention.

INDUSTRIAL APPLICABILITY The present invention is useful as a tire foreign matter removing tool for removing foreign matter that has entered grooves of a tire.

1 foreign matter removal tool 10 body portion 11 grip portion 21 scoop portion (action portion)
21a Scoop tip (part on the tip side of the action part)
21b Scoop base end (portion on the base end side of the action part)

Claims (4)

A tire foreign matter removing tool for removing foreign matter that has entered a tire groove,
a shaft-like main body;
a gripping portion provided on one end side in the axial direction of the main body portion and gripped by a worker;
an action portion provided on the other end side of the main body portion in the axial direction and entering the groove portion,
an outer edge of the tip of the acting portion in the axial direction has a tapered curved shape,
The foreign matter removing tool for a tire, wherein the working portion has a bow-shaped cross section that contacts at least one side wall portion and bottom portion of the groove portion in a state in which the working portion enters the groove portion. In the tire foreign matter removing tool according to claim 1,
A foreign matter removing tool for a tire, wherein the action portion has a semi-cylindrical cross section. In the tire foreign matter removing tool according to claim 1 or 2,
A foreign matter removing tool for a tire, wherein the thickness of the working portion on the tip end side is thinner than the thickness on the base end side of the working portion. In the tire foreign matter removing tool according to any one of claims 1 to 3,
A foreign matter removing tool for a tire, wherein the thickness of the tip portion of the working portion is thinner toward the tip.

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