JPH0116644Y2

JPH0116644Y2 -

Info

Publication number: JPH0116644Y2
Application number: JP1983033173U
Authority: JP
Priority date: 1983-03-07
Filing date: 1983-03-07
Publication date: 1989-05-16
Also published as: JPS59137804U

Description

【考案の詳細な説明】［産業上の利用分野］本考案は、高速走行時のタイヤバルブの曲がり
防止対策を施した自動車用スナツプインタイプの
チユーブレスバルブに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a snap-in type tubeless valve for automobiles that is designed to prevent tire valves from bending during high-speed driving.

［従来の技術］従来、自動車用スナツプインタイプのチユーブ
レスバルブは、高速走行時の曲がり角度が大きく
なるということから、耐久試験においては停止、
走行のくり返し試験を行つているがゴムの疲労と
いう点で問題があつた。[Conventional technology] Conventionally, snap-in type tubeless valves for automobiles have had to stop or stop during durability tests because the bending angle becomes large when driving at high speeds.
We have been conducting repeated driving tests, but we have encountered problems with rubber fatigue.

そこで、バルブの曲がり防止を図るために、ホ
イールにバルブ固定治具を使用したり、又は弾性
体の硬度強化あるいは、図示しないが、実公昭32
−６号に示されるように、鍔付抑止環を加硫時に
ゴムと一体的に埋設する等、種々の方法がとられ
てきた。 Therefore, in order to prevent the valve from bending, a valve fixing jig was used on the wheel, the hardness of the elastic body was strengthened, or
Various methods have been used, such as embedding a flanged restraining ring integrally with the rubber during vulcanization, as shown in No. 6.

［考案が解決しようとする課題］しかし、いずれも自動車用タイヤリムへのバル
ブの装着時の挿入力上昇、挿入工数増加、バルブ
重量増加等の問題があつた。[Problems to be solved by the invention] However, all of them had problems such as an increase in the insertion force when attaching the valve to an automobile tire rim, an increase in the number of insertion steps, and an increase in the weight of the valve.

本考案は、リムに組付けられたチユーブレスバ
ルブの弾性体の下穴部に、別体にて形成した中空
円筒状のブツシユを嵌挿することによつて、自動
車用タイヤリムへのバルブの装着時に挿入力が大
きくなりすぎて挿入できないという問題を起こす
ことなく、自動車の高速走行時のバルブの曲がり
防止対策を施したものである。 The present invention allows the valve to be attached to an automobile tire rim by inserting a separately formed hollow cylindrical bush into the prepared hole of the elastic body of the tubeless valve assembled to the rim. This prevents the valve from bending when the car is running at high speed, without causing the problem of the valve being unable to be inserted due to excessive insertion force.

［課題を解決するための手段］本考案のチユーブレスタイヤ用バルブは、弾性
体２の下端部に設けられた下穴部３の内壁中間部
に環状の凹溝４を形成してなるチユーブレスタイ
ヤ用バルブと、外壁中段部に前記環状の凹溝４と
対応させて設けた環状の凸部を形成してなる円筒
状のブツシユ５とからなり、チユーブレスタイヤ
用バルブをリムに装着した後、円筒状のブツシユ
５を前記弾性体の下穴部３に挿入するようにした
ものである。[Means for Solving the Problems] The tubeless tire valve of the present invention has a tubeless tire valve in which an annular groove 4 is formed in the middle part of the inner wall of a pilot hole 3 provided at the lower end of the elastic body 2. It consists of a tire valve and a cylindrical bushing 5 formed with an annular convex part provided in the middle part of the outer wall in correspondence with the annular groove 4, and after the tubeless tire valve is mounted on the rim. , a cylindrical bush 5 is inserted into the prepared hole 3 of the elastic body.

［実施例］本考案の実施例を図面に基づいて説明すれば次
の通りである。[Example] An example of the present invention will be described below based on the drawings.

弾性体２の下端部に設けられた下穴部３にはそ
の内壁中間部に環状の凹溝４が設けられている。 A pilot hole 3 provided at the lower end of the elastic body 2 is provided with an annular groove 4 in the middle of its inner wall.

中空円筒状のブツシユ５はその外壁中段部に前
記凹溝４と合致する環状の凸部６が形成され、こ
の中空円筒状のブツシユ５は、チユーブレスタイ
ヤ用バルブをリムに組付けた後、前記弾性体の下
穴部３に強く嵌挿される。 The hollow cylindrical bush 5 has an annular protrusion 6 formed in the middle part of its outer wall to match the groove 4, and after the tubeless tire valve is assembled to the rim, the hollow cylindrical bush 5 is used. It is firmly inserted into the prepared hole 3 of the elastic body.

［効果］本考案は上述の如く、バルブ弾性体２の下穴部
３に中空円筒状のブツシユ５が挿入されているの
で、例え高速走行時に、タイヤ用バルブに曲げ力
（リム７を支点とする首振り）が大きく働いても
弾性体２の強度はこれにより補強されるのでバル
ブ弾性部の変形が極めて小さくなり、高速走行時
の曲がり角度は著しく改善される。[Effects] As described above, in the present invention, the hollow cylindrical bush 5 is inserted into the pilot hole 3 of the valve elastic body 2, so even when driving at high speed, bending force (using the rim 7 as a fulcrum) is applied to the tire valve. This reinforces the strength of the elastic body 2 even when large amounts of oscillation occur, so deformation of the valve elastic portion becomes extremely small, and the bending angle during high-speed running is significantly improved.

又、前述したように自動車用タイヤリムにバル
ブを装着する際にはブツハシユがないので容易に
装着可能であり、挿入後は強固な装着状態が得ら
れるものである。 In addition, as mentioned above, when the valve is mounted on an automobile tire rim, it can be easily mounted because there is no bump, and a firm mounting condition can be obtained after insertion.

[Brief explanation of the drawing]

図面は考案の実施例を示す縦断側面図で、第１
図はブツシユ５の挿入前の状態を示し、第２図は
挿入後の状態を示すものである。１…バルブステム、２…バルブ弾性体部、３…
バルブ弾性体下穴部、４…環状の凹溝、５…円筒
状ブツシユ、６…環状の凸部、７…自動車用タイ
ヤリム。 The drawing is a longitudinal sectional side view showing an embodiment of the invention.
The figure shows the state before the bush 5 is inserted, and FIG. 2 shows the state after the bush 5 is inserted. 1...Valve stem, 2...Valve elastic body part, 3...
Valve elastic body prepared hole portion, 4... Annular groove, 5... Cylindrical bush, 6... Annular convex portion, 7... Automobile tire rim.

Claims

[Scope of utility model registration request]

A tubeless tire valve has an annular groove 4 formed in the middle part of the inner wall of a pilot hole 3 provided at the lower end of the elastic body 2, and a groove 4 corresponding to the annular groove 4 in the middle part of the outer wall. It consists of a cylindrical bushing 5 formed with an annular convex part provided therein, and after the tubeless tire valve is mounted on the rim, the cylindrical bushing 5 is inserted into the pilot hole part 3 of the elastic body. Valve for tubeless tires.