JPH049681B2 - - Google Patents

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、気体入りタイヤを用いた車両におい
て、タイヤ漏気時の保安としてタイヤ内に内蔵す
る補助輪の構造、特に補助輪が弾性パツドを介し
ホイールリム外径を把握することを前提とした分
割形補助輪の構造に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the structure of a training wheel built into the tire for security in the event of tire air leakage in a vehicle using a pneumatic tire, and in particular to a construction in which the training wheel is made of elastic pads. This relates to the structure of a split type auxiliary wheel on the premise that the outer diameter of the wheel rim can be determined through the auxiliary wheel.

［従来の技術］ 従来から気体入りタイヤの車両において、タイ
ヤ漏気が生じた際の保安のため、タイヤたわみを
制限するようタイヤ内に補助輪を設けることが多
く提案されており、その中の一つとして、本出願
人の考案による実公昭57−30166号「空気タイヤ
に内蔵する補助車輪装置」がある。[Prior Art] Conventionally, in vehicles with pneumatic tires, in order to ensure safety in the event of tire air leakage, it has often been proposed to provide auxiliary wheels within the tires to limit tire deflection. One example is Utility Model Publication No. 57-30166, ``Auxiliary wheel device built into a pneumatic tire,'' devised by the present applicant.

これは組立が容易である特長をもつもので、補
助輪はデイスクホイールとの嵌合を条件として分
割輪間の半径方向ならびに軸方向の相対変位が拘
束される構造である。したがつて、分割輪の内径
ならびにデイスクホイールの外径に高い加工精度
が要求される。また、デイスクホイールは、分割
形である必要がある等の欠点を有する。 This has the advantage of being easy to assemble, and the auxiliary wheels have a structure in which relative displacement in the radial and axial directions between the divided wheels is restricted on the condition that they are fitted with the disc wheel. Therefore, high machining accuracy is required for the inner diameter of the split ring and the outer diameter of the disc wheel. Additionally, the disc wheel has drawbacks such as the need to be of a split type.

さらに他の公知技術として、実公昭53−25247
号「特殊タイヤ」があるが、これはリムと円弧心
金との間にインナーラバー（弾性パツド）を介在
させているので、円弧心金の内径およびリムの外
径に特に高い加工精度を要しない特長をもつてい
る。しかし、円弧心金はリング状として十分な強
度剛性をもつ必要があり、円弧心金の結合には、
結合部にフランジを設けてフランジを密着させる
ようボルト締結を行わねばならず、さらに調整シ
ムの挿入作業もあり、タイヤの内部で行う作業と
しては容易でない。特に、タイヤ断面内空に比し
て補助輪の占める割合が大きいときは作業スペー
スが不足し、結合不可能な場合も発生する。さら
に、円弧心金のフランジを密着させる構造である
ため、この円弧心金加工に当たつては、一旦フラ
ンジ合わせ面の平面加工とボルト穴加工を行い、
仮にリングを形成せしめ、内外径を丸削り加工す
る方法をとるのが通常手段で、工程が多い欠点を
もつている。 Furthermore, as another known technology, Utility Model Publication No. 53-25247
"Special Tires" have an inner rubber (elastic pad) interposed between the rim and the arcuate core, so particularly high machining accuracy is required for the inner diameter of the arcuate core and the outer diameter of the rim. It has the feature that it does not. However, the arc-shaped mandrel must have sufficient strength and rigidity as a ring.
A flange must be provided at the joint and bolts must be fastened to bring the flange into close contact, and there is also the work of inserting adjustment shims, which is not an easy work to do inside the tire. In particular, when the auxiliary wheel occupies a large proportion of the cross-sectional space of the tire, there may be a shortage of working space and it may not be possible to connect the wheels. Furthermore, since the structure is such that the flanges of the circular arc mandrel are brought into close contact with each other, when machining this arc mandrel, the flange mating surfaces are first flattened and the bolt holes are machined.
The usual method is to temporarily form a ring and round the inner and outer diameters, which has the disadvantage of requiring many steps.

さらに他の公知技術として、特開昭54−122502
号「タイヤおよび車輪リムアセンブリー」がある
が、この内蔵補助輪である安全ローラーと呼称す
るものは、複数に分割され、その結合構造は、
「タイヤに挿入した後、重なり合う部分の端を通
る締め具により締め付けられる。」であり、重な
り合う部分は形状も複雑であり、かつ精度の高い
加工を行わないと、安全ローラーを強固な一体品
とすることができない欠点をもつている。 Furthermore, as another known technique, Japanese Patent Application Laid-Open No. 54-122502
``Tire and Wheel Rim Assembly'', this built-in auxiliary wheel called the safety roller is divided into multiple parts, and their joint structure is as follows:
``After being inserted into the tire, the safety roller is tightened by a fastener that passes through the edge of the overlapping part.'' The overlapping part has a complex shape, and unless it is processed with high precision, the safety roller cannot be made into a strong one piece. It has the disadvantage that it cannot be used.

本発明は以上にかんがみ、分割形補助輪の内径
部とホイールリムの外径部に弾性パツドを介在せ
しめ、この部分は特に高い精度が不要なものと
し、分割形補助輪を形成する一片である分割部分
の結合作業が容易な結合構造を採用し、さらに分
割部分の集合である分割形の補助輪を容易に製造
し得る構造としたもので、補助輪ならびにホイー
ルリムに特に高い精度を要求することなく、タイ
ヤ内において容易に組立作業を行うことのできる
分割形補助輪の構造を提供することを目的として
いる。 In view of the above, the present invention interposes an elastic pad on the inner diameter part of the split type auxiliary wheel and the outer diameter part of the wheel rim, and this part does not require particularly high precision, and is one piece forming the split type auxiliary wheel. It adopts a joining structure that makes it easy to join the divided parts, and also has a structure that makes it easy to manufacture split-type auxiliary wheels, which are a collection of divided parts, and requires particularly high precision for the auxiliary wheels and wheel rims. It is an object of the present invention to provide a structure of a split type auxiliary wheel that can be easily assembled inside a tire without causing any problems.

［課題を解決するための手段］ 上記の目的達成のため本発明の分割形補助輪
は、(a)気体入れチユーブレスタイヤ１の内部に挿
入可能なように円周方向において複数の分割片２
に分割され、各分割片２がリム部２ａとボス部２
ｂとこれらの両部分を連結するデイスク部２ｃと
から構成され、前記チユーブレスタイヤ１に適合
し気密を保持するホイールリム４の外径部と前記
ボス部２ｂの内径部との間に弾性パツド３を介在
させて前記チユーブレスタイヤ１に内蔵する分割
形補助輪の構造であつて、(b)前記各分割片２間を
結合するための結合装置１０が、結合片７と、係
止部材８と、分割片２および結合片７を一連に貫
通し且つ先端の螺合部にナツト２０を螺合・緊締
する偏心ボルト部材１１とを備え、(c)前記分割片
２の両端面に前記係止部材８に対応する凹部１７
が、また該凹部１７の近くに前記偏心ボルト部材
１１の係合孔１６がそれぞれ開設され、(d)前記結
合片７は、前記偏心ボルト部材１１を係合する係
合面１５を両端寄りに備え、該偏心ボルト部材１
１を所定角度回転させることにより、前記係合面
１５および前記係合孔１６との係合を介して前記
分割片２同士が相互に引き寄せられる構造とし、
(e)前記係止部材８を、僅かな〓間を設けて相互に
結合される両分割片２間の結合端部の半径方向の
相対変位を拘束するキーとして作用させるように
している。[Means for Solving the Problems] In order to achieve the above object, the split type auxiliary wheel of the present invention includes (a) a plurality of split pieces 2 in the circumferential direction so as to be insertable into the inside of the inflatable tubeless tire 1;
Each divided piece 2 has a rim part 2a and a boss part 2.
An elastic pad is provided between the outer diameter part of the wheel rim 4, which fits the tubeless tire 1 and maintains airtightness, and the inner diameter part of the boss part 2b. (b) A connecting device 10 for connecting each of the divided pieces 2 includes a connecting piece 7 and a locking member. 8, and an eccentric bolt member 11 that passes through the divided piece 2 and the connecting piece 7 in series and screws and tightens the nut 20 at the threaded portion at the tip; Recess 17 corresponding to locking member 8
However, the engagement holes 16 of the eccentric bolt member 11 are opened near the recesses 17, and (d) the coupling piece 7 has the engagement surfaces 15 for engaging the eccentric bolt member 11 closer to both ends. and the eccentric bolt member 1
1 by a predetermined angle, the divided pieces 2 are attracted to each other through engagement with the engagement surface 15 and the engagement hole 16,
(e) The locking member 8 is configured to act as a key for restraining relative displacement in the radial direction of the joint end portions between the two divided pieces 2 that are joined to each other with a slight gap between them.

［作用］ 本発明にかかる分割形補助輪をタイヤ内部に挿
入して組み立てるには、円周方向に分割された補
助輪の複数（たとえば四個）の分割片２を、チユ
ーブレスタイヤ１内に挿入してこれらを円環状に
配置し、各分割片２の相隣接する端部の凹部１７
内に跨つて係止部材８を挿入し、その片側又は両
側に結合片７を配置し、各分割片２の係合孔１６
および結合片７の係合面１５の位置に偏心ボルト
部材１１を一連に貫通して先端の螺合部にナツト
２０を螺合して緊締する。この状態では、偏心ボ
ルト部材１１の偏心面１４は結合片７の係合面１
５に係合していない。ここで偏心ボルト部材１１
を所定角度回転させると、偏心ボルト部材１１の
偏心面１４が結合片７の係合面１５に係合し、且
つ前記相隣接する分割片２同士を対応する係合孔
１６と偏心ボルト部材１１との係合を介して相互
に引き寄せて保持する。そのため、分割片２の互
いに対向する両端面間には、僅かな〓間が設けら
れている。また相隣接する分割片２の凹部１７間
に跨つて挿入される前記係止部材８が、僅かな〓
間を設けて相互に結合される両分割片２間の結合
端部の半径方向の相対変位を拘束する。[Operation] In order to insert and assemble the split type auxiliary wheel according to the present invention inside a tire, a plurality of (for example, four) divided pieces 2 of the auxiliary wheel divided in the circumferential direction are inserted into the tubeless tire 1. These are inserted and arranged in an annular shape, and the recesses 17 at the adjacent ends of each divided piece 2 are inserted.
Insert the locking member 8 across the inside, place the coupling piece 7 on one or both sides of the locking member 8, and insert the locking member 8 into the engaging hole 16 of each divided piece 2.
The eccentric bolt member 11 is passed through the engagement surface 15 of the coupling piece 7 in series, and the nut 20 is screwed into the threaded portion at the tip and tightened. In this state, the eccentric surface 14 of the eccentric bolt member 11 is connected to the engagement surface 1 of the coupling piece 7.
5 is not engaged. Here, the eccentric bolt member 11
When rotated by a predetermined angle, the eccentric surface 14 of the eccentric bolt member 11 engages with the engagement surface 15 of the coupling piece 7, and the adjacent divided pieces 2 are connected to the corresponding engagement holes 16 and the eccentric bolt member 11. are attracted and held together through engagement with the Therefore, a slight gap is provided between the opposing end surfaces of the divided piece 2. In addition, the locking member 8 inserted across the recesses 17 of the adjacent divided pieces 2 is slightly
Relative displacement in the radial direction of the joint ends between the two divided pieces 2 which are joined to each other with a gap therebetween is restrained.

［実施例］ つぎに実施例について、図面を参照して説明す
る。第１図は本発明にかかる補助輪を内蔵するタ
イヤ車輪の一実施例の断面図で、気体入りのチユ
ーブレスタイヤ１の内部にリム部２ａとボス部２
ｂとそれを結ぶデイスク部２ｃとが一体となつた
金属製の補助輪を配置し、この補助輪のボス部２
ｂがゴム性状の弾性パツド３を介し、チユーブレ
スタイヤ用のホイールリム４の外径部を把握する
構造で、結合片７、係止部材８、偏心ボルト部材
（図示されず）、緊締部品としてのボルト９、ナツ
ト２０等よりなる分割形補助輪の分割片２の結合
装置１０をもつている。図例の分割形補助輪は四
分割で、タイヤの内部に挿入可能なように、回転
軸線を含む放射方向の平面によつて四個の扇形の
分割片２に分割され、組み立てられて出来てい
る。第２図に示すように、四個の分割片２−１，
２−２，２−３，２−４は、結合装置１０によつ
てたがいに結合される。また各分割片端面間に
は、僅かな〓間Ａが設けられる。なお、第１図の
５はフランジ、６はフランジ５を止めるロツクリ
ングである。[Example] Next, an example will be described with reference to the drawings. FIG. 1 is a sectional view of an embodiment of a tire wheel incorporating an auxiliary wheel according to the present invention.
A metal auxiliary wheel is disposed in which b and a disk portion 2c connecting it are integrated, and the boss portion 2 of this auxiliary wheel is
b has a structure in which the outer diameter part of a wheel rim 4 for a tubeless tire is grasped via a rubber-like elastic pad 3, and includes a connecting piece 7, a locking member 8, an eccentric bolt member (not shown), and a tightening part. It has a coupling device 10 for the divided pieces 2 of the split type auxiliary wheel, which is made of bolts 9, nuts 20, etc. The split-type auxiliary wheel shown in the figure is divided into four parts, and is made by dividing into four sector-shaped parts 2 by a plane in the radial direction including the axis of rotation, and assembling them so that they can be inserted into the inside of the tire. There is. As shown in FIG. 2, four divided pieces 2-1,
2-2, 2-3, and 2-4 are coupled to each other by a coupling device 10. Further, a slight distance A is provided between each divided end face. In addition, 5 in FIG. 1 is a flange, and 6 is a lock ring for fixing the flange 5.

第３図は、結合装置１０の構成を示す斜視図
で、分割部分２−１，２−２の結合端部に、係止
部材８の係合する凹部１７が各２箇所に、また大
きく開口構造とした空間１８が結合端部間に跨つ
てそれぞれ開設されている。なお、空間１８は後
述する緊締部品のボルト９の貫通にも利用され
る。 FIG. 3 is a perspective view showing the structure of the coupling device 10, in which the coupling ends of the divided parts 2-1 and 2-2 have two recesses 17 each in which the locking member 8 engages, and a large opening. A structured space 18 is provided between the joined ends. Note that the space 18 is also used for passing a bolt 9 of a tightening component to be described later.

結合片７は、各分割片２の結合状態で偏心ボル
ト部材１１を介し、その金属弾性変形で分割片２
同士、たとえば分割片２−１と２−２とをたがい
に引き寄せる方向の結合力を生起し保持する構造
である。 The connecting piece 7 connects the divided pieces 2 through the eccentric bolt member 11 in the connected state of each divided piece 2 by the elastic metal deformation.
This structure generates and maintains a bonding force in a direction that draws the divided pieces 2-1 and 2-2 toward each other, for example.

係止部材８は、分割部分２−１および２−２の
各々の凹部１７に係合し、両分割片２の結合端部
の半径方向の相対変位をキー作用で拘束する構造
であり、図示の通り偏心ボルト部材１１および緊
締部品としてのボルト９の軸中心線は、補助輪中
心線と平行である。 The locking member 8 has a structure that engages with the recess 17 of each of the divided portions 2-1 and 2-2, and restrains relative displacement in the radial direction of the joint ends of both the divided pieces 2 by a key action. The axial center lines of the eccentric bolt member 11 and the bolt 9 as a tightening component are parallel to the auxiliary wheel center line.

偏心ボルト部材１１は、結合片７の係合面１５
および分割部分２−１，２−２の係合孔１６とそ
れぞれ係合する円周面（偏心面）１４を有し、結
合片７のもつ結合力を分割片２−１，２−２に伝
達する構造となつている。緊締部品は、ボルト９
のほかに特殊座金１２，１３をも含めて構成さ
れ、結合片７を分割片２−１，２−２のデイスク
部２ｃの両面に固着するよう締め付ける作用をす
る。本実施例では、偏心ボルト部材１１がこの機
能をも兼ね備える構成とされており、上記緊締部
品と協調して結合部における両分割片２の軸方向
相対変位を拘束する構造とされている。この締付
には、ボルト９の先端および偏心ボルト部材１１
の先端の螺合部にそれぞれナツト２０を螺合緊締
するようになつている。この緊締によつて分割片
２−１と２−２とは軸方向の相対変位が拘束され
る。 The eccentric bolt member 11 is connected to the engagement surface 15 of the coupling piece 7.
and a circumferential surface (eccentric surface) 14 that engages with the engagement hole 16 of the divided portions 2-1, 2-2, respectively, and applies the binding force of the connecting piece 7 to the divided pieces 2-1, 2-2. It is structured to communicate. The tightening part is bolt 9
It also includes special washers 12 and 13 in addition to the above, and has the function of tightening the connecting piece 7 so as to be fixed to both sides of the disk portion 2c of the divided pieces 2-1 and 2-2. In this embodiment, the eccentric bolt member 11 is configured to have this function as well, and cooperates with the above-mentioned tightening component to restrain relative displacement in the axial direction of both divided pieces 2 at the joint portion. For this tightening, the tip of the bolt 9 and the eccentric bolt member 11 are
A nut 20 is screwed and tightened into the threaded portion at the tip of each. This tightening restricts the relative displacement of the divided pieces 2-1 and 2-2 in the axial direction.

結合片７は、偏心ボルト部材１１，１１に対す
る二箇所の係合面１５，１５の間を連続した一つ
の空間とした開口構造とし、結合力を伝達する部
分は、その開口を挟んで平行に配置される一対の
細長い片によつて構成される。この構成により、
結合力に応じて結合片７の全体が伸び易い弾性構
造となつている。 The coupling piece 7 has an open structure with one continuous space between the two engaging surfaces 15, 15 for the eccentric bolt members 11, 11, and the part that transmits the coupling force is arranged in parallel across the opening. It consists of a pair of elongated strips that are arranged. With this configuration,
The entire connecting piece 7 has an elastic structure that is easily expanded according to the binding force.

係止部材８は、ソリツドの円柱構造にかえて、
中心が開口構造でさらにスリーブの一部を切り欠
いた弾性係止片２２とすることもできる。また、
分割片２における結合力の作用する梁状部１９
（斜線部）を、図示のような大きい開口部として
の空間１８を設けることによつて、斜線で示した
形の両端固定のたわみ梁に相当するものとして構
成し、梁状部１９が結合力の作用によつて生じる
たわみを期待した弾性構造とすることもできる。 The locking member 8 has a solid cylindrical structure,
It is also possible to use an elastic locking piece 22 having an open structure at the center and cutting out a part of the sleeve. Also,
Beam-shaped portion 19 on which the bonding force acts in the divided piece 2
By providing a space 18 (shaded area) as a large opening as shown in the figure, it is configured to correspond to a flexible beam fixed at both ends as shown in the shaded area, and the beam-like part 19 is It is also possible to use an elastic structure that anticipates the deflection caused by the action of .

偏心ボルト部材１１が結合片７の係合面１５お
よび分割片２−１，２−２の係合孔１６にそれぞ
れ係合する面は、偏心面としての円周面１４であ
る。ただし、偏心ボルト部材１１の、上方の結合
片７および下方の結合片７の係合面１５と係合す
る部分は、平面２１が形成されており、その平面
２１の位置における偏心ボルト部材１１の断面形
状は、円の一部が切り欠かれたものとなつてい
る。偏心ボルト部材１１を挿入する場合、前記平
面２１が相手の係合孔１６の方向となるよう、偏
心ボルト部材１１を図示の位相より90°回転させ
た位相とし、抵抗なく挿入できるようにする。挿
入後、偏心ボルト部材１１を90°回転させること
により、円周面１４が係合面１５および係合孔１
６と係合し、結合片７に結合力を生起させる。 The surfaces on which the eccentric bolt member 11 engages with the engagement surface 15 of the coupling piece 7 and the engagement holes 16 of the divided pieces 2-1 and 2-2 are circumferential surfaces 14 as eccentric surfaces. However, a flat surface 21 is formed in the portion of the eccentric bolt member 11 that engages with the engaging surface 15 of the upper connecting piece 7 and the lower connecting piece 7, and the eccentric bolt member 11 at the position of the flat surface 21 is formed. The cross-sectional shape is a circle with a part cut out. When inserting the eccentric bolt member 11, the eccentric bolt member 11 is rotated by 90° from the phase shown in the figure so that the flat surface 21 is in the direction of the mating engagement hole 16, so that the eccentric bolt member 11 can be inserted without resistance. After insertion, by rotating the eccentric bolt member 11 by 90 degrees, the circumferential surface 14 is aligned with the engagement surface 15 and the engagement hole 1.
6 and generates a bonding force in the coupling piece 7.

その様子を第４図によつて説明する。偏心ボル
ト部材１１を挿入するときを実線で示し、偏心ボ
ルト部材１１を90°回転させたときを破線で示し
ている。分割片２の係合孔１６は、実線位置から
破線位置までの移動量Ｂの移動を強制せられ、こ
の移動によつて分割部分同士を引き寄せ、結合力
を発生させる効果をもつものである。所要結合力
を得るための一実施例としては、円筒面１４の直
径Ｃを、たとえば20.0mm、20.1mm、20.2mm等何種
かを準備し、補助輪のみを広い場所でリング状に
仮組立し、その際に偏心ボルト部材１１を選択す
ることにより、各部材の製作誤差の大小に拘わら
ず、適正な結合力を得ることができる。偏心ボル
ト部材１１の回転に当たつては、トルクレンチを
使用して抵抗トルクを求めることにより、結合力
の調整が可能となる。 The situation will be explained with reference to FIG. A solid line indicates when the eccentric bolt member 11 is inserted, and a broken line indicates when the eccentric bolt member 11 is rotated by 90 degrees. The engagement hole 16 of the divided piece 2 is forced to move by an amount B from the solid line position to the broken line position, and this movement has the effect of drawing the divided parts together and generating a bonding force. As an example for obtaining the required bonding force, prepare several diameters C of the cylindrical surface 14, such as 20.0 mm, 20.1 mm, and 20.2 mm, and temporarily assemble only the auxiliary wheels in a ring shape in a wide area. However, by selecting the eccentric bolt member 11 at this time, an appropriate bonding force can be obtained regardless of the magnitude of manufacturing error of each member. When rotating the eccentric bolt member 11, the coupling force can be adjusted by determining the resistance torque using a torque wrench.

第５図は、第４図の場合の偏心ボルト部材１１
の断面を長円２３に変えたもので、基本的には同
じ機能をもつている。第４図の形状では円周面１
４と平面２１との交わるコーナーの部分の相手係
合面に対する作用がやゝ円滑を欠くが、第５図例
ではこれがなく、偏心ボルト部材１１の回転を円
滑にする長所があるものの、製作上やゝ手数を要
する欠点をもつている。 FIG. 5 shows the eccentric bolt member 11 in the case of FIG.
It has the cross section changed to an ellipse 23, and basically has the same function. In the shape of Figure 4, the circumferential surface 1
Although the action of the corner portion where 4 and the plane 21 intersect with the mating engagement surface is a little lacking in smoothness, this is not the case in the example shown in FIG. It has the disadvantage that it requires some effort.

第６図は偏心ボルト部材１１のうち分割片２に
係合する箇所のみに対し偏心量Ｄを付した円柱体
２４としたもので、偏心ボルト部材１１の180°以
内の回転によつて係合孔１６を介して分割片２を
移動させることのできる移動量Ｂと偏心量Ｄとの
間には、［Ｂ＜2D］の関係がある。本品の製作
は、第４図の場合よりもやゝ手数を要するが、断
面にコーナー部がないという長所をもつている。
ただし、これをそのまま第３図の偏心ボルト部材
１１に置き換えることはできず、結合片７の二枚
が共通使用できなくなる等の不便があり、構造上
やゝ複雑化する不利がある。すなわち、以上の第
４図〜６図の各様式は、使用条件によつて適宜に
選択されるべきである。 FIG. 6 shows a cylindrical body 24 with an eccentric amount D attached only to the portion of the eccentric bolt member 11 that engages with the divided piece 2, and is engaged by rotation of the eccentric bolt member 11 within 180°. There is a relationship [B<2D] between the amount of movement B by which the divided piece 2 can be moved through the hole 16 and the amount of eccentricity D. This product requires a little more time to manufacture than the case shown in Figure 4, but it has the advantage of having no corners in its cross section.
However, this cannot be directly replaced with the eccentric bolt member 11 shown in FIG. 3, and there are inconveniences such as the two connecting pieces 7 not being able to be used in common, and there are disadvantages in that the structure is complicated. That is, each of the formats shown in FIGS. 4 to 6 above should be appropriately selected depending on the conditions of use.

第３図の構造において、偏心ボルト部材１１を
挿入後、90°の回転を行い、さらにナツト２０に
より偏心ボルト部材１１に緊締作用をも行わせる
過程で、偏心ボルト部材１１は座金１２の溝５の
深さＥだけ軸方向の挿入が進み、頭部が溝２５内
に嵌まり込むことによつて、偏心ボルト部材１１
は回り止めされた状態となる。その状態が第２図
に示される。 In the structure shown in FIG. 3, after inserting the eccentric bolt member 11, the eccentric bolt member 11 is rotated by 90 degrees, and in the process of tightening the eccentric bolt member 11 with the nut 20, the eccentric bolt member 11 is inserted into the groove 5 of the washer 12. The eccentric bolt member 11 is inserted in the axial direction by a depth E, and the head fits into the groove 25.
is in a state where it is stopped from rotating. The situation is shown in FIG.

［発明の効果］ 分割形補助輪とホイールリムとの間に弾性パツ
ドを介することで、補助輪ならびにホイールリム
に特に高い精度を要求することなく、結合片、係
止部材および偏心ボルト部材を有する結合装置に
より、弾性パツドの有するたわみに対し、補助輪
を形成する分割片間の半径方向ならびに軸方向の
相対変位を拘束し、十分な強度剛性を有する補助
輪形成を可能とする。[Effect of the invention] By interposing the elastic pad between the split type auxiliary wheel and the wheel rim, the connecting piece, the locking member, and the eccentric bolt member can be provided without requiring particularly high precision for the auxiliary wheel and the wheel rim. The coupling device restrains relative displacement in the radial and axial directions between the divided pieces forming the auxiliary wheel against the deflection of the elastic pad, making it possible to form the auxiliary wheel with sufficient strength and rigidity.

結合装置の結合操作を行う偏心ボルト部材およ
び緊締部品の軸中心線が車輪中心線と平行である
ため、少ないスパナー作業スペースのもとでの作
業が可能とされ、タイヤ内における組立作業が容
易に実施できる。また、分割形補助輪の分割部に
対して、分割片の間に僅かな〓間を設けることに
より、結合力のすべてが係止部材を経由すること
で、特に係止部材を二個以上設けた際の補助輪全
体のなすリングの変形に対し、分割片の曲げモー
メントの伝達も可能となり、補助輪の強度剛性を
高いものとなし得る。また前述した通り、補助輪
の製作を容易にする効果を得ることができる。 Since the axis center line of the eccentric bolt member and tightening part that perform the coupling operation of the coupling device is parallel to the wheel center line, it is possible to work with a small spanner work space, making assembly work inside the tire easier. Can be implemented. In addition, by providing a slight gap between the divided pieces of the split type auxiliary wheel, all of the coupling force passes through the locking member, so it is possible to use two or more locking members. It is also possible to transmit the bending moment of the divided pieces against the deformation of the ring of the entire auxiliary wheel when the auxiliary wheel is turned, and the strength and rigidity of the auxiliary wheel can be increased. Furthermore, as described above, it is possible to obtain the effect of facilitating the manufacture of the auxiliary wheels.

さらに、結合装置を構成する部材に対して、開
口構造による弾性を付することで、補助輪が受け
る外力に対し、結合力を安定に保持することがで
きる。また前述したように、偏心ボルト部材の偏
心部分の断面形状を、真円の一部を切り欠いた形
状、楕円ないし長円とすることにより、偏心ボル
ト部材を回転させるだけで強固な結合力を得るこ
とができ、その作業が簡単容易なものであるとい
う効果をあわせもつものである。 Furthermore, by imparting elasticity to the members constituting the coupling device due to the opening structure, the coupling force can be stably maintained against external forces applied to the auxiliary wheel. Furthermore, as mentioned above, by making the cross-sectional shape of the eccentric part of the eccentric bolt member into a shape with a part of a perfect circle cut out, an ellipse, or an ellipse, a strong bonding force can be achieved simply by rotating the eccentric bolt member. It also has the effect of making the work simple and easy.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は分割形補助輪ならびに気体入りタイヤ
車輪の断面図、第２図はその分割形補助輪の側面
図、第３図はその分割形補助輪の結合装置を分解
して示す斜視図、第４図、第５図および第６図は
いずれもその結合装置の要部に関し、それぞれ異
なる実施例についての説明図である。 １……チユーブレスタイヤ、２−１，２−２，
２−３，２−４……分割片、２ａ……リム部、２
ｂ……ボス部、２ｃ……デイスク部、３……弾性
パツド、４……ホイールリム、５……フランジ、
６……ロツクリング、７……結合片、８……係止
部材、９……ボルト、１０……結合装置、１１…
…偏心ボルト部材、１２，１３……座金、１４…
…円周面（偏心面）、１５……係合面、１６……
係合孔、１７……凹部、１８……空間、１９……
梁状部、２０……ナツト、２１……平面、２２…
…弾性係止片、２３……長円、２４……円柱体、
２５……溝、Ａ……〓間、Ｂ……移動量、Ｃ……
円筒面の直径、Ｄ……偏心量、Ｅ……溝の深さ。 FIG. 1 is a cross-sectional view of a split-type auxiliary wheel and a pneumatic tire wheel, FIG. 2 is a side view of the split-type auxiliary wheel, and FIG. 3 is an exploded perspective view of a coupling device for the split-type auxiliary wheel. FIG. 4, FIG. 5, and FIG. 6 are all explanatory diagrams of different embodiments of the main parts of the coupling device. 1... Tubeless tire, 2-1, 2-2,
2-3, 2-4...Divided piece, 2a...Rim part, 2
b...Boss part, 2c...Disk part, 3...Elastic pad, 4...Wheel rim, 5...Flange,
6... lock ring, 7... coupling piece, 8... locking member, 9... bolt, 10... coupling device, 11...
...Eccentric bolt member, 12, 13...Washer, 14...
... Circumferential surface (eccentric surface), 15 ... Engagement surface, 16 ...
Engagement hole, 17... recess, 18... space, 19...
Beam-shaped portion, 20... Nut, 21... Plane, 22...
...Elastic locking piece, 23...Oval, 24...Cylindrical body,
25...Groove, A...=, B...Movement amount, C...
Diameter of cylindrical surface, D: eccentricity, E: depth of groove.

Claims (1)

【特許請求の範囲】 １ 気体入れチユーブレスタイヤ１の内部に挿入
可能なように円周方向において複数の分割片２に
分割され、各分割片２がリム部２ａとボス部２ｂ
とこれらの両部分を連結するデイスク部２ｃとか
ら構成され、前記チユーブレスタイヤ１に適合し
気密を保持するホイールリム４の外径部と前記ボ
ス部２ｂの内径部との間に弾性パツド３を介在さ
せて前記チユーブレスタイヤ１に内蔵する分割形
補助輪の構造であつて、 前記各分割片２間を結合するための結合装置１
０が、結合片７と、係止部材８と、偏心面１４を
有し前記分割片２および前記結合片７を一連に貫
通し且つ先端の螺合部にナツト２０を螺合・緊締
する偏心ボルト部材１１とを備え、 前記分割片２の両端面に前記係止部材８に対応
する凹部１７が、また該凹部１７の近くに前記偏
心ボルト部材１１の係合孔１６がそれぞれ開設さ
れ、 また前記結合片７は、前記偏心ボルト部材１１
を係合する係合面１５を両端寄りに備え、該偏心
ボルト部材１１を所定角度回転させることによ
り、前記係合面１５および前記係合孔１６との係
合を介して前記分割片２同士が相互に引き寄せら
れる構造とし、 さらに前記係止部材８を、僅かな〓間を設けて
相互に結合される両分割片２間の結合端部の半径
方向の相対変位を拘束するキーとして作用させる
ことを特徴とする気体入れタイヤに内蔵する分割
形補助輪の構造。[Scope of Claims] 1 Divided into a plurality of divided pieces 2 in the circumferential direction so as to be insertable into the inside of the gas-filled tubeless tire 1, each divided piece 2 having a rim part 2a and a boss part 2b.
and a disk part 2c connecting these two parts, and an elastic pad 3 is provided between the outer diameter part of the wheel rim 4 that fits the tubeless tire 1 and maintains airtightness, and the inner diameter part of the boss part 2b. This is a structure of a split type auxiliary wheel built into the tubeless tire 1 with a connecting device 1 for connecting each of the divided pieces 2.
0 is an eccentric that has a connecting piece 7, a locking member 8, and an eccentric surface 14, passes through the divided piece 2 and the connecting piece 7 in series, and screws and tightens a nut 20 to the threaded portion at the tip. a bolt member 11, a recess 17 corresponding to the locking member 8 is provided on both end surfaces of the divided piece 2, and an engagement hole 16 for the eccentric bolt member 11 is provided near the recess 17, and The coupling piece 7 is connected to the eccentric bolt member 11.
By rotating the eccentric bolt member 11 by a predetermined angle, the divided pieces 2 are connected to each other through engagement with the engaging surface 15 and the engaging hole 16. are drawn to each other, and furthermore, the locking member 8 is made to act as a key to restrain the relative displacement in the radial direction of the joint end between the two divided pieces 2 that are joined to each other with a slight gap between them. The structure of the split type auxiliary wheel built into the pneumatic tire is characterized by: