JP4014310B2 - Tire anti-slip device fasteners - Google Patents

Description

【００１６】
表１の測定結果から明らかなように、従来品に対して、実施例１、２、３の本願発明品は、いずれも高速走行においてジョイントフックの外れは確認されなかった。なお、折り返し角度を、９０°に設定した場合には、装着性が若干低下することが判った。
【００１７】
【発明の効果】
この発明は、上記のように二股状のジョイントフックをタイヤ周方向に拡開させてそれぞれ形成すると共に、前記係止孔に嵌合するジョイントフックの両先端の折返し部を互いにタイヤ周方向の内側に向けてタイヤ径方向に対して４０°〜９０°の範囲に折り返して形成したので、車両の走行時に滑り止めネット本体の接合部に形成した係止孔から二股状のジョイントフックが外れるのを有効に防止でき、また装着作業性を良好にすることが出来る効果がある。
【図面の簡単な説明】
【図１】タイヤのトレッド面に滑り止めネット本体をこの発明に係る締付け具を介して取付けた状態を示す側面図である。
【図２】この発明の第１実施形態を示す先端折返し部の折り返し角度を、７０°に設定した場合のジョイントフックの拡大正面図である。
【図３】 この発明の比較例を示す先端折返し部の折り返し角度を、２０°に設定した場合のジョイントフックの拡大正面図である。
【図４】 この発明の第２実施形態を示す先端折返し部の折り返し角度を、４０°に設定した場合のジョイントフックの拡大正面図である。
【図５】 この発明の第３実施形態を示す先端折返し部の折り返し角度を、９０°に設定した場合のジョイントフックの拡大正面図である。
【図６】従来のタイヤ滑り止め装置の締付具の正面図である。
【図７】タイヤに従来のタイヤ滑り止め装置を装着した状態を示す拡大正面図である。
【図８】（ａ）は従来のジョイントフックの拡大正面図、（ｂ）は（ａ）のジョイントフックの側面図である。
【符号の説明】
１ 締付具 ２ 非伸長性ロープ
３ ゴムバンド ４ 締付バンド
５，６ 折り返し部 ７ 締付バックル
８ タイヤ ９ 滑り止めネット本体
９ａ，９ｂ 接合部 １０ 掛止め金具
１１ａ，１１ｂ ジョイントフック
１２ａ，１２ｂ 係止穴 ２０ 締付け具
２１ａ，２１ｂ ジョイントフック ２１ｘ 先端折返し部
Ｐ 折り返し点[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fastener for a tire slip prevention device, and more particularly, effectively prevents a bifurcated hook of a fastening buckle from coming off from a locking hole formed in a joint portion of a slip prevention net body during traveling, The present invention relates to a fastener for a tire anti-slip device having improved mounting workability.
[0002]
[Prior art]
In recent years, a so-called rope buckle that is easy to install in place of a rubber ring is used as a fastener for a tire anti-slip device that uses a strip formed in an elastic material such as rubber or synthetic resin as a non-slip body. The system is becoming mainstream.
As this type of fastener 1, for example, as shown in FIGS. 6 and 7, a non-extensible rope 2 having flexibility and a rubber band 3 shorter than the non-extensible rope 2 are connected endlessly. The folded portions 5 and 6 made of the non-extensible rope 2 are formed at both ends of the tightening band 4. One of the folded portions 5 is locked to the locking body of the tightening buckle 7, and the other folded The portion 6 is hung around a cleat pivotally supported by a fastening buckle 7 via a shaft.
[0003]
When the tire anti-slip device using the fastener 1 is mounted, the anti-slip net body 9 wound around the outer periphery of the tire 8 is connected to each other at the joint portions 9a and 9b at both ends in the longitudinal direction (circumferential direction of the tire). Then, the fastening band 4 of the fastening tool 1 is hooked so as to guide the plurality of latching fittings 10 attached to the side edges in the longitudinal direction (ends in the width direction of the tire) at predetermined intervals. ing.
[0004]
When the fastening tool 1 is mounted, first, the joint portions 9a and 9b in the longitudinal direction of the anti-slip net body 9 are connected to each other on the vehicle body side (back side) of the tire 7. Next, the bifurcated joint hooks 11a and 11b of the tightening buckle 7 are inserted into the locking holes 12a and 12b provided in the joint portions 9a and 9b of the anti-slip net body 9 to connect both ends, and then the tightening band In the state where the inner and outer loops are aligned with each other, 4 is sequentially passed over the plurality of latches 10.
[0005]
[Problems to be solved by the invention]
By the way, the buckle type tire anti-slip device as described above needs to be tightened to some extent at the time of wearing. However, when the tightening force is loose, the joint hooks 11a and 11b are engaged by disturbance input from the road surface at high speed traveling. There was a danger of coming off from the blind holes 12a, 12b.
[0006]
That is, when the vehicle travels, the terminal joint portions 9a and 9b of the anti-slip net body 9 attached to the tire 7 repeatedly expand and contract in the radial direction with respect to the tire circumferential direction, and thus are provided in the joint portions 9a and 9b. The locking holes 12a and 12b are also moved up and down in the radial direction.
As a result, as shown in FIGS. 8 (a) and 8 (b), the locking direction and the locking direction of the tip folded portions 11x and 11x of the joint hooks 11a and 11b formed in a bifurcated shape bent in a U-shaped cross section are obtained. There is a risk that the joint hooks 11a and 11b are disengaged from the locking holes 12a and 12b because the vertical movement directions of the holes 12a and 12b coincide with each other.
[0007]
An object of the present invention is to effectively prevent a bifurcated joint hook from coming off from a locking hole formed in a joint portion of a non-slip net main body during traveling of a vehicle, and to improve a mounting workability. Is to provide the fasteners.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention forms bifurcated joint hooks in the tire circumferential direction so that the folded portions at both ends of the joint hooks that fit into the locking holes are mutually connected in the tire circumferential direction. The gist of the invention is that it is formed by folding back in the range of 40 ° to 90 ° with respect to the tire radial direction toward the inside of the tire .
The present invention is configured as described above, and is formed by expanding joint hooks in the tire circumferential direction, respectively, and engaging both ends with engaging holes formed in the joint portion in the longitudinal direction of the anti-slip net body. The folding holes are formed so as to be folded in the range of 40 ° to 90 ° with respect to the tire radial direction toward each other inward in the tire circumferential direction. Even if it moves up and down, the locking direction of the tip folding part of the joint hook is shifted, so it will not come off easily, and the workability of attaching the anti-slip net body to the tire will be good It is possible.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same component as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description. FIG. 1 is a side view showing a state in which an anti-slip net body 9 is attached to a tread surface of a tire 8 via a fastener 20 according to the present invention, and 4 is a non-extensible rope 2 and a non-extensible rope 2 having flexibility. fastening band configured and short rubber band 3 than stretchable rope 2 and endlessly connected, 7 buckle fastening, 10 represents a hanging clasp tool.
[0010]
The bifurcated joint hooks 21a and 21b of the tightening buckle 7 to be engaged with the locking holes 12a and 12b formed in the joint portions 9a and 9b in the longitudinal direction of the anti-slip net body 9 are shown in FIGS. Thus, while expanding toward the tire circumferential direction S, the folded portions 21x and 21x at both ends thereof are folded back toward the inner side in the tire radial direction R.
[0011]
That is, in the first embodiment of the present invention, the folded portions 21x and 21x at both ends of the joint hooks 21a and 21b are opposed to each other with the folded point P of the joint hooks 21a and 21b as a fulcrum as shown in FIG. The folding angle may be 40 ° as shown in FIG. 4, 90 ° as shown in FIG.
[0012]
In the present invention, as described above, the joint hooks 21a and 21b are formed so as to expand to the side away from each other in the tire circumferential direction, and the joint hooks 21a and 21b are formed on the joint portions 9a and 9b in the longitudinal direction of the anti-slip net body 9. Since the folded portions 21x and 21x at both ends engaged with the stop holes 12a and 12b are folded back to the opposite sides in the tire circumferential direction, the locking holes 12a and 12b provided in the joint portion when the vehicle is running are formed. Even if it moves up and down in the radial direction with respect to the tire circumferential direction, the engagement direction with the folded portions 21x and 21x at both ends of the joint hooks 21a and 21b is shifted and engaged by friction. In addition, the workability of mounting the anti-slip net body 9 on the tire 8 can be improved.
[0013]
Next, Examples 1 to 3 of the present invention in which the folding angles of the folded portions 21x and 21x at both ends of the joint hooks 21a and 21b are set to 40 °, 70 °, and 90 °, and the folding angle is set to 20 °. Table 1 below shows the measurement results comparing the comparative example and the conventional product (when the tip of the joint hook is in the tire radial direction). In addition, as a measuring method, it is a result at the time of mounting | wearing on tire size: 215 / 60R16 L009.
[0014]
Further, the fastening tool was a buckle type, and the tightening amount was about 50% less than usual.
[0015]
[Table 1]

[0016]
As is apparent from the measurement results in Table 1, the present invention products of Examples 1, 2, and 3 were not confirmed to be detached from the joint hooks at high speeds as compared with the conventional products. It has been found that when the turn-back angle is set to 90 °, the wearability is slightly lowered.
[0017]
【The invention's effect】
In the present invention, as described above, the bifurcated joint hooks are respectively formed by expanding them in the tire circumferential direction, and the folded portions at both ends of the joint hooks that fit into the locking holes are mutually inside the tire circumferential direction. Since it is formed to be folded back in the range of 40 ° to 90 ° with respect to the tire radial direction, the bifurcated joint hook is detached from the locking hole formed in the joint portion of the anti-slip net body when the vehicle is running. It can be effectively prevented and the workability can be improved.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which a non-slip net body is attached to a tread surface of a tire via a fastener according to the present invention.
FIG. 2 is an enlarged front view of the joint hook when the turning angle of the tip turning portion showing the first embodiment of the present invention is set to 70 °.
FIG. 3 is an enlarged front view of a joint hook when a turning angle of a tip turning portion showing a comparative example of the present invention is set to 20 °.
FIG. 4 is an enlarged front view of a joint hook when a turning angle of a tip turning portion showing a second embodiment of the present invention is set to 40 °.
FIG. 5 is an enlarged front view of a joint hook when a turning angle of a tip turning portion showing a third embodiment of the present invention is set to 90 °.
FIG. 6 is a front view of a fastening tool of a conventional tire slip prevention device.
FIG. 7 is an enlarged front view showing a state in which a conventional tire slip prevention device is mounted on a tire.
8A is an enlarged front view of a conventional joint hook, and FIG. 8B is a side view of the joint hook of FIG. 8A.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fastening tool 2 Non-extensible rope 3 Rubber band 4 Fastening band 5, 6 Folding part 7 Fastening buckle 8 Tire 9 Non-slip net main body 9a, 9b Joining part 10 Latching metal fittings 11a, 11b Joint hook 12a, 12b Engagement Perforated hole 20 Fasteners 21a, 21b Joint hook 21x End turning portion P Turning point

Claims (1)

Between the joints at both ends of the anti-slip net body wound around the outer peripheral surface of the tire, a bifurcated joint hook of a tightening buckle is hooked and connected to a locking hole formed in the joint, and the tire surface edge of the anti-slip net body In the tire anti-skid device tightening tool configured to sequentially loop the loop-shaped tightening band along the portion,
The bifurcated joint hooks are respectively formed by expanding in the tire circumferential direction, and the turned-up portions at both ends of the joint hooks fitted in the locking holes are directed inward in the tire circumferential direction in the tire radial direction. A fastener for a tire anti-slip device formed by folding back in a range of 40 ° to 90 ° .

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