JP2020200904A - Tolerance ring - Google Patents

Tolerance ring Download PDF

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JP2020200904A
JP2020200904A JP2019109339A JP2019109339A JP2020200904A JP 2020200904 A JP2020200904 A JP 2020200904A JP 2019109339 A JP2019109339 A JP 2019109339A JP 2019109339 A JP2019109339 A JP 2019109339A JP 2020200904 A JP2020200904 A JP 2020200904A
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ring
peripheral surface
tolerance
outer ring
protrusions
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JP6899866B2 (en
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俊一 渡邉
Shunichi Watanabe
俊一 渡邉
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Origin Co Ltd
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Abstract

To provide a tolerance ring capable of reducing variation in slip torque.SOLUTION: A tolerance ring 2 is formed with a plurality of protrusions 4 projecting either radially or radially inward. In at least one of the plurality of protrusions 4, a through opening extending through a protrusion end is formed. In the case that the plurality of protrusions 4 projects radially outward, when the tolerance ring 2 is press-inserted into between an inner peripheral surface 8a of an outer ring 8 and an outer peripheral surface 10a of an inner ring 10, a peripheral edge of the through opening bites into the inner peripheral surface 8a of the outer ring 8 so as to suppress relative rotation with respect to the outer ring 8. In the case that the plurality of protrusions 4 projects radially inward, when the tolerance ring 2 is press-inserted into between the inner peripheral surface 8a of the outer ring 8 and the outer peripheral surface 10a of the inner ring 10, the peripheral edge of the through opening bites into the outer peripheral surface 10a of the inner ring 10 so as to suppress relative rotation with respect to the inner ring 10.SELECTED DRAWING: Figure 4

Description

本発明は、円筒形状内周面を有する外輪と、外輪の径方向内側に配置され円筒形状外周面を有する内輪との間に圧入され、外輪と内輪との間の伝達トルクを所定値以下に制限するトレランスリングに関する。 In the present invention, the outer ring having a cylindrical inner peripheral surface and the inner ring arranged radially inside the outer ring and having a cylindrical outer peripheral surface are press-fitted, and the transmission torque between the outer ring and the inner ring is reduced to a predetermined value or less. Regarding limiting tolerance rings.

下記特許文献1には、円筒形状内周面を有する外輪と、外輪の径方向内側に配置され円筒形状外周面を有する内輪との間に圧入され、外輪と内輪との間の伝達トルクを所定値以下に制限するトレランスリングが開示されている。このトレランスリングはC字状に湾曲された帯状板材から構成されており、トレランスリングには径方向外側に突出する複数の突起が形成されている。トレランスリングが外輪の内周面と内輪の外周面との間に圧入されると、トレランスリングの突起の突出端が外輪の内周面に押圧されると共に、トレランスリングの内周面が内輪の外周面に押圧されることにより、突起が径方向に圧縮され弾性変形する。 In Patent Document 1 below, an outer ring having a cylindrical inner peripheral surface and an inner ring arranged radially inside the outer ring and having a cylindrical outer peripheral surface are press-fitted, and a transmission torque between the outer ring and the inner ring is defined. A tolerance ring that limits below the value is disclosed. This tolerance ring is composed of a strip-shaped plate material curved in a C shape, and the tolerance ring is formed with a plurality of protrusions protruding outward in the radial direction. When the tolerance ring is press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring, the protruding end of the protrusion of the tolerance ring is pressed against the inner peripheral surface of the outer ring, and the inner peripheral surface of the tolerance ring is the inner ring. By being pressed against the outer peripheral surface, the protrusions are compressed in the radial direction and elastically deformed.

そして、このトレランスリングによれば、外輪の内周面および内輪の外周面に対して、突起の弾性力に応じた摩擦抵抗を発生させることにより、外輪または内輪に入力されるトルクが所定値以下の場合には、外輪と内輪との相対回転を抑制して外輪と内輪との間で所定値以下のトルクを伝達することができる。また、外輪または内輪に入力されるトルクが所定値を超えると、トレランスリングの突起の突出端と外輪の内周面との間に滑りが生じ、外輪と内輪との間におけるトルクの伝達が遮断される。これによって、外輪と内輪との間の伝達トルクが所定値以下に制限される。以下、前記所定値を「滑りトルク」という。 According to this tolerance ring, the torque input to the outer ring or the inner ring is equal to or less than a predetermined value by generating frictional resistance on the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring according to the elastic force of the protrusion. In the case of, the relative rotation between the outer ring and the inner ring can be suppressed and a torque of a predetermined value or less can be transmitted between the outer ring and the inner ring. Further, when the torque input to the outer ring or the inner ring exceeds a predetermined value, slippage occurs between the protruding end of the protrusion of the tolerance ring and the inner peripheral surface of the outer ring, and the transmission of torque between the outer ring and the inner ring is cut off. Will be done. As a result, the transmission torque between the outer ring and the inner ring is limited to a predetermined value or less. Hereinafter, the predetermined value is referred to as "sliding torque".

特開2012−197927号公報Japanese Unexamined Patent Publication No. 2012-197927

しかしながら、上記特許文献1に開示されたトレランスリングにおいては、トレランスリングの内周面と内輪の外周面との間に滑りが生じる場合もある。内輪の外周面が滑り面となる場合の滑りトルクの値は、外輪の内周面が滑り面となる場合の滑りトルクの値とは異なる。したがって、上記特許文献1に開示されたトレランスリングにおいては、滑りトルクにばらつきが生じるという問題がある。 However, in the tolerance ring disclosed in Patent Document 1, slippage may occur between the inner peripheral surface of the tolerance ring and the outer peripheral surface of the inner ring. The value of the sliding torque when the outer peripheral surface of the inner ring is the sliding surface is different from the value of the sliding torque when the inner peripheral surface of the outer ring is the sliding surface. Therefore, the tolerance ring disclosed in Patent Document 1 has a problem that the sliding torque varies.

上記事実に鑑みてなされた本発明の課題は、滑りトルクのばらつきを低減することができるトレランスリングを提供することである。 An object of the present invention made in view of the above facts is to provide a tolerance ring capable of reducing variations in slip torque.

本発明は上記課題を解決するために以下のトレランスリングを提供する。すなわち、円筒形状内周面を有する外輪と、前記外輪の径方向内側に配置され円筒形状外周面を有する内輪との間に圧入され、前記外輪と前記内輪との間の伝達トルクを所定値以下に制限するトレランスリングであって、径方向外側または径方向内側のいずれか一方に突出する複数の突起が形成され、前記複数の突起の少なくとも1個には突出端を貫通する貫通開口が形成されており、前記複数の突起が径方向外側に突出している場合には、前記外輪の内周面と前記内輪の外周面との間に圧入された際に前記貫通開口の周縁が前記外輪の内周面に食い込むことにより前記外輪に対する相対回転が抑制され、前記複数の突起が径方向内側に突出している場合には、前記外輪の内周面と前記内輪の外周面との間に圧入された際に前記貫通開口の周縁が前記内輪の外周面に食い込むことにより前記内輪に対する相対回転が抑制されるトレランスリングを本発明は提供する。 The present invention provides the following tolerance ring in order to solve the above problems. That is, it is press-fitted between the outer ring having a cylindrical inner peripheral surface and the inner ring having a cylindrical outer peripheral surface arranged inside the outer ring in the radial direction, and the transmission torque between the outer ring and the inner ring is equal to or less than a predetermined value. A tolerance ring that is limited to a plurality of protrusions that project to either the radial outer side or the radial inner side, and at least one of the plurality of protrusions is formed with a through opening that penetrates the protruding end. When the plurality of protrusions protrude outward in the radial direction, the peripheral edge of the through opening is inside the outer ring when it is press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. By biting into the peripheral surface, the relative rotation with respect to the outer ring is suppressed, and when the plurality of protrusions project inward in the radial direction, the protrusion is press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. The present invention provides a tolerance ring in which the peripheral edge of the through opening bites into the outer peripheral surface of the inner ring to suppress relative rotation with respect to the inner ring.

好ましくは、前記貫通開口は前記突出端を通るスリットを含む。前記スリットは周方向に延びているのが好適である。前記スリットは軸方向に延びていてもよい。前記貫通開口は前記突出端に形成された円形開口を含むのが好都合である。前記複数の突起は半球状に形成されているのが好ましい。 Preferably, the through opening comprises a slit through the protruding end. It is preferable that the slit extends in the circumferential direction. The slit may extend in the axial direction. It is convenient that the through opening includes a circular opening formed at the protruding end. The plurality of protrusions are preferably formed in a hemispherical shape.

本発明のトレランスリングにおいては、複数の突起が径方向外側に突出している場合には、外輪の内周面と内輪の外周面との間に圧入された際に、貫通開口の周縁が外輪の内周面に食い込むことにより、外輪または内輪に入力されるトルクが滑りトルクを超えても外輪に対する相対回転が抑制されるので内輪の外周面が滑り面となる。また、本発明のトレランスリングにおいては、複数の突起が径方向内側に突出している場合には、外輪の内周面と内輪の外周面との間に圧入された際に、貫通開口の周縁が内輪の外周面に食い込むことにより、外輪または内輪に入力されるトルクが滑りトルクを超えても内輪に対する相対回転が抑制されるので外輪の内周面が滑り面となる。したがって、本発明のトレランスリングによれば、外輪の内周面または内輪の外周面のいずれか一方を滑り面として規定するので、滑りトルクのばらつきを低減することができる。 In the tolerance ring of the present invention, when a plurality of protrusions protrude outward in the radial direction, the peripheral edge of the through opening is the outer ring when press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. By biting into the inner peripheral surface, even if the torque input to the outer ring or the inner ring exceeds the sliding torque, the relative rotation with respect to the outer ring is suppressed, so that the outer peripheral surface of the inner ring becomes the sliding surface. Further, in the tolerance ring of the present invention, when a plurality of protrusions protrude inward in the radial direction, the peripheral edge of the through opening is formed when press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. By biting into the outer peripheral surface of the inner ring, even if the torque input to the outer ring or the inner ring exceeds the sliding torque, the relative rotation with respect to the inner ring is suppressed, so that the inner peripheral surface of the outer ring becomes the sliding surface. Therefore, according to the tolerance ring of the present invention, either the inner peripheral surface of the outer ring or the outer peripheral surface of the inner ring is defined as the sliding surface, so that the variation in the sliding torque can be reduced.

本発明に従って構成されたトレランスリングの斜視図。A perspective view of a tolerance ring configured according to the present invention. 図1に示すトレランスリングが外輪と内輪との間に圧入される状態を示す斜視図。FIG. 3 is a perspective view showing a state in which the tolerance ring shown in FIG. 1 is press-fitted between the outer ring and the inner ring. 図1に示すトレランスリングが外輪と内輪との間に圧入された状態を示す一部断面図。A partial cross-sectional view showing a state in which the tolerance ring shown in FIG. 1 is press-fitted between the outer ring and the inner ring. 図1に示すトレランスリングの弾性変形を示す模式図。The schematic diagram which shows the elastic deformation of the tolerance ring shown in FIG. (a)図1に示すトレランスリングの第1の変形例を示す斜視図、(b)(a)に示すトレランスリングの正面図、(c)(a)に示すトレランスリングの側面図。(A) A perspective view showing a first modification of the tolerance ring shown in FIG. 1, a front view of the tolerance ring shown in (b) and (a), and a side view of the tolerance ring shown in (c) and (a). (a)図1に示すトレランスリングの第2の変形例を示す斜視図、(b)(a)に示すトレランスリングの正面図、(c)(a)に示すトレランスリングの側面図。(A) A perspective view showing a second modification of the tolerance ring shown in FIG. 1, a front view of the tolerance ring shown in (b) and (a), and a side view of the tolerance ring shown in (c) and (a). (a)図1に示すトレランスリングの第3の変形例を示す斜視図、(b)(a)に示すトレランスリングの正面図、(c)(a)に示すトレランスリングの側面図。(A) A perspective view showing a third modification of the tolerance ring shown in FIG. 1, a front view of the tolerance ring shown in (b) and (a), and a side view of the tolerance ring shown in (c) and (a).

以下、本発明に従って構成されたトレランスリングの好適実施形態について図面を参照しつつ説明する。 Hereinafter, preferred embodiments of the tolerance ring configured according to the present invention will be described with reference to the drawings.

図1に全体を符号2で示すトレランスリングは、全体としてC字状に湾曲された帯状板材から構成されている。トレランスリング2の材質としては、ステンレス鋼等の適宜の金属材料が用いられ得る。トレランスリング2の外周面には、径方向外側に突出する半球状の複数の突起4が周方向に間隔をおいて形成されている。トレランスリング2の外周面からの各突起4の突出量は実質上同一であり、各突起4には突出端を貫通する貫通開口としてのスリット6が形成されている。各スリット6の長手方向寸法は各突起4の直径以下であり、各スリット6は各突起4の領域内に位置している。このようなトレランスリング2は、帯状板材にプレス加工を施すことにより突起4およびスリット6を形成した後、フォーミング加工によりC字状に湾曲させることにより形成することができる。 The tolerance ring shown by reference numeral 2 in FIG. 1 is composed of a strip-shaped plate material curved in a C shape as a whole. As the material of the tolerance ring 2, an appropriate metal material such as stainless steel can be used. On the outer peripheral surface of the tolerance ring 2, a plurality of hemispherical protrusions 4 protruding outward in the radial direction are formed at intervals in the circumferential direction. The amount of protrusion of each protrusion 4 from the outer peripheral surface of the tolerance ring 2 is substantially the same, and each protrusion 4 is formed with a slit 6 as a through opening penetrating the protruding end. The longitudinal dimension of each slit 6 is equal to or less than the diameter of each protrusion 4, and each slit 6 is located within the region of each protrusion 4. Such a tolerance ring 2 can be formed by forming the protrusions 4 and the slits 6 by pressing the strip-shaped plate material, and then bending the strip-shaped plate material into a C shape by forming.

図1に示すとおり、図示の実施形態のスリット6はトレランスリング2の周方向に延びている。スリット6が周方向に延びている場合には、スリットが軸方向に延びている場合と比較して、スリット6の軸方向片側端部からトレランスリング2の軸方向片側端部までの寸法と、スリット6の軸方向他側端部からトレランスリング2の軸方向他側端部までの寸法とが長くなるので、帯状板材にプレス加工を施してスリット6を形成する際に、スリット6を起点としてトレランスリング2が破断するおそれが低減される。 As shown in FIG. 1, the slit 6 of the illustrated embodiment extends in the circumferential direction of the tolerance ring 2. When the slit 6 extends in the circumferential direction, the dimension from the axial one-sided end of the slit 6 to the axial one-sided end of the tolerance ring 2 is compared with the case where the slit extends in the axial direction. Since the dimension from the other end in the axial direction of the slit 6 to the other end in the axial direction of the tolerance ring 2 becomes longer, the slit 6 is used as the starting point when the strip 6 is pressed to form the slit 6. The risk of the tolerance ring 2 breaking is reduced.

図2を参照して、トレランスリング2が圧入される外輪8および内輪10について説明する。外輪8は、適宜の金属材料から円筒形状に形成されており、円筒形状内周面8aを有する。内輪10は、適宜の金属材料から円柱形状に形成されており、円筒形状外周面10aを有する。内輪10は、外輪8の径方向内側に配置される。外輪8と内輪10との一方にはモータ等の駆動源が接続され、外輪8と内輪10との他方には被駆動部材が接続される。なお、外輪8と内輪10との一方が出力軸等の駆動源の一部を構成し、外輪8と内輪10との他方が被駆動部材の一部を構成するようになっていてもよい。また、外輪8は円筒形状内周面8aを有していれば、外輪8の全体形状が円筒形状でなくてもよく、内輪10は円筒形状内周面8aを有していれば、内輪10の全体形状が円柱状でなくてもよい。 The outer ring 8 and the inner ring 10 into which the tolerance ring 2 is press-fitted will be described with reference to FIG. The outer ring 8 is formed in a cylindrical shape from an appropriate metal material, and has a cylindrical inner peripheral surface 8a. The inner ring 10 is formed in a cylindrical shape from an appropriate metal material, and has a cylindrical outer peripheral surface 10a. The inner ring 10 is arranged inside the outer ring 8 in the radial direction. A drive source such as a motor is connected to one of the outer ring 8 and the inner ring 10, and a driven member is connected to the other of the outer ring 8 and the inner ring 10. One of the outer ring 8 and the inner ring 10 may form a part of a drive source such as an output shaft, and the other of the outer ring 8 and the inner ring 10 may form a part of a driven member. Further, if the outer ring 8 has a cylindrical inner peripheral surface 8a, the overall shape of the outer ring 8 does not have to be cylindrical, and if the inner ring 10 has a cylindrical inner peripheral surface 8a, the inner ring 10 does not have to be cylindrical. The overall shape of is not required to be cylindrical.

図3および図4に示すとおり、外輪8の内周面8aと内輪10の外周面10aとの間にトレランスリング2が圧入されると、トレランスリング2の各突起4の突出端が外輪8の内周面8aに押圧されると共に、トレランスリング2の内周面が内輪10の外周面10aに押圧されることにより、各突起4が径方向に圧縮され弾性変形する。この際、突起4の突出端におけるスリット6の周縁が外輪8の内周面8aに食い込む。また、各突起4の弾性力に起因して、各突起4の突出端と外輪8の内周面8aとの間に摩擦抵抗が発生すると共に、トレランスリング2の内周面と内輪10の外周面10aとの間に摩擦抵抗が発生する。これによって、外輪8または内輪10に入力されるトルクが滑りトルク以下の場合には、外輪8と内輪10との相対回転が抑制され、外輪8と内輪10との間でトルクが伝達される。 As shown in FIGS. 3 and 4, when the tolerance ring 2 is press-fitted between the inner peripheral surface 8a of the outer ring 8 and the outer peripheral surface 10a of the inner ring 10, the protruding end of each protrusion 4 of the tolerance ring 2 becomes the outer ring 8. Each protrusion 4 is compressed in the radial direction and elastically deformed by being pressed against the inner peripheral surface 8a and the inner peripheral surface of the tolerance ring 2 being pressed against the outer peripheral surface 10a of the inner ring 10. At this time, the peripheral edge of the slit 6 at the protruding end of the protrusion 4 bites into the inner peripheral surface 8a of the outer ring 8. Further, due to the elastic force of each protrusion 4, frictional resistance is generated between the protruding end of each protrusion 4 and the inner peripheral surface 8a of the outer ring 8, and the inner peripheral surface of the tolerance ring 2 and the outer circumference of the inner ring 10 are generated. Friction resistance is generated between the surface and the surface 10a. As a result, when the torque input to the outer ring 8 or the inner ring 10 is equal to or less than the sliding torque, the relative rotation between the outer ring 8 and the inner ring 10 is suppressed, and the torque is transmitted between the outer ring 8 and the inner ring 10.

外輪8または内輪10に入力されるトルクが滑りトルクを超えると、トレランスリング2の内周面と内輪10の外周面10aとの間に滑りが生じ、外輪8と内輪10との間におけるトルクの伝達が遮断される。図示の実施形態のトレランスリング2においては、突起4の突出端におけるスリット6の周縁が外輪8の内周面8aに食い込んでいることにより、外輪8または内輪10に入力されるトルクが滑りトルクを超えてもトレランスリング2と外輪8との相対回転が抑制されるので、内輪10の外周面10aが滑り面となる。したがって、図示の実施形態のトレランスリング2によれば、内輪10の外周面10aを滑り面として規定するので、滑りトルクのばらつきを低減することができる。 When the torque input to the outer ring 8 or the inner ring 10 exceeds the sliding torque, slip occurs between the inner peripheral surface of the tolerance ring 2 and the outer peripheral surface 10a of the inner ring 10, and the torque between the outer ring 8 and the inner ring 10 is increased. Transmission is blocked. In the tolerance ring 2 of the illustrated embodiment, the peripheral edge of the slit 6 at the protruding end of the protrusion 4 bites into the inner peripheral surface 8a of the outer ring 8, so that the torque input to the outer ring 8 or the inner ring 10 causes the sliding torque. Even if it exceeds the limit, the relative rotation between the tolerance ring 2 and the outer ring 8 is suppressed, so that the outer peripheral surface 10a of the inner ring 10 becomes a sliding surface. Therefore, according to the tolerance ring 2 of the illustrated embodiment, since the outer peripheral surface 10a of the inner ring 10 is defined as the sliding surface, the variation in the sliding torque can be reduced.

また、図示の実施形態のトレランスリング2においては、突起4に形成されている貫通開口がスリット6であるので、外輪8の内周面8aに食い込む部分の長さが比較的長くなり、トレランスリング2と外輪8との相対回転が効果的に抑制される。 Further, in the tolerance ring 2 of the illustrated embodiment, since the through opening formed in the protrusion 4 is the slit 6, the length of the portion that bites into the inner peripheral surface 8a of the outer ring 8 becomes relatively long, and the tolerance ring The relative rotation between 2 and the outer ring 8 is effectively suppressed.

本発明のトレランスリングは上述の実施形態に限定されず、上述の実施形態から種々の変形が可能である。たとえば、図5に示すとおり、第1の変形例としてのトレランスリング12の外周面には、径方向外側に突出する円錐台形状の複数の突起14が周方向に間隔をおいて形成され、各突起14には突出端を貫通する貫通開口としての円形開口16が形成されている。このように貫通開口が円形であると、貫通開口が形成されることによる突起14の剛性低下が緩和されるため、トレランスリング12が外輪8の内周面8aと内輪10の外周面10aとの間に圧入された際に、円形開口16の周縁が外輪8の内周面8aに食い込みやすくなる。 The tolerance ring of the present invention is not limited to the above-described embodiment, and various modifications can be made from the above-described embodiment. For example, as shown in FIG. 5, on the outer peripheral surface of the tolerance ring 12 as the first modification, a plurality of truncated cone-shaped protrusions 14 projecting outward in the radial direction are formed at intervals in the circumferential direction. The protrusion 14 is formed with a circular opening 16 as a through opening that penetrates the protruding end. When the through opening is circular in this way, the decrease in rigidity of the protrusion 14 due to the formation of the through opening is alleviated, so that the tolerance ring 12 is formed between the inner peripheral surface 8a of the outer ring 8 and the outer peripheral surface 10a of the inner ring 10. When press-fitted between them, the peripheral edge of the circular opening 16 easily bites into the inner peripheral surface 8a of the outer ring 8.

また、図6に示す第2の変形例のトレランスリング12’のように、円形開口16に加えて軸方向に延びるスリット18が各突起14に形成されていてもよい。さらに、図7に示す第3の変形例のトレランスリング12”のように、円形開口16および軸方向のスリット18に加えて周方向に延びるスリット20が各突起14に形成されていてもよい。 Further, as in the tolerance ring 12'of the second modification shown in FIG. 6, a slit 18 extending in the axial direction may be formed in each protrusion 14 in addition to the circular opening 16. Further, as in the tolerance ring 12 "of the third modification shown in FIG. 7, in addition to the circular opening 16 and the slit 18 in the axial direction, the slit 20 extending in the circumferential direction may be formed in each protrusion 14.

上述の実施形態の各突起4はトレランスリング2の外周面から径方向外側に突出しているが、各突起4は、トレランスリング2の内周面から径方向内側に突出していてもよい。この場合には、外輪8の内周面8aと内輪10の外周面10aとの間にトレランスリング2が圧入された際に、突出端におけるスリット6の周縁が内輪10の外周面10aに食い込むことにより、外輪8または内輪10に入力されるトルクが滑りトルクを超えても内輪10に対するトレランスリング2の相対回転が抑制されるので、外輪8の内周面8aが滑り面となる。また、図5ないし図7に示す変形例においても、トレランスリング12、12’、12”の内周面から径方向内側に突起14が突出していてもよい。 Although each of the protrusions 4 of the above-described embodiment protrudes radially outward from the outer peripheral surface of the tolerance ring 2, each protrusion 4 may protrude radially inward from the inner peripheral surface of the tolerance ring 2. In this case, when the tolerance ring 2 is press-fitted between the inner peripheral surface 8a of the outer ring 8 and the outer peripheral surface 10a of the inner ring 10, the peripheral edge of the slit 6 at the protruding end bites into the outer peripheral surface 10a of the inner ring 10. As a result, even if the torque input to the outer ring 8 or the inner ring 10 exceeds the sliding torque, the relative rotation of the tolerance ring 2 with respect to the inner ring 10 is suppressed, so that the inner peripheral surface 8a of the outer ring 8 becomes the sliding surface. Further, also in the modified examples shown in FIGS. 5 to 7, the protrusion 14 may protrude inward in the radial direction from the inner peripheral surface of the tolerance rings 12, 12', 12 ".

上述の実施形態のスリット6は周方向に延びているが、スリットは軸方向等の任意の方向に延びていてもよい。スリットが軸方向に延びている場合には、外輪8と内輪10との回転方向に対してスリットが直交することになるので、スリットの周縁が外輪8の内周面8a(または内輪10の外周面10a)に食い込むことになるので、トレランスリング2と外輪8(または内輪10)との相対回転が一層効果的に抑制される。 Although the slit 6 of the above-described embodiment extends in the circumferential direction, the slit may extend in any direction such as the axial direction. When the slit extends in the axial direction, the slit is orthogonal to the rotation direction of the outer ring 8 and the inner ring 10, so that the peripheral edge of the slit is the inner peripheral surface 8a of the outer ring 8 (or the outer circumference of the inner ring 10). Since it bites into the surface 10a), the relative rotation between the tolerance ring 2 and the outer ring 8 (or the inner ring 10) is more effectively suppressed.

上述の各突起の軸方向位置は整合しているが、各突起の軸方向位置は整合していなくてもよい。また、突起の形状は半球状または円錐台形状に限られず、角錐台形状等の任意の形状が採用され得る。 Although the axial positions of the above-mentioned protrusions are aligned, the axial positions of the protrusions do not have to be aligned. Further, the shape of the protrusion is not limited to the hemispherical shape or the truncated cone shape, and any shape such as a truncated cone shape can be adopted.

貫通開口は、複数の突起の少なくとも1個に形成されていればよい。貫通開口の形状はスリット形状または円形状に限定されず、矩形状等の他の形状であってもよい。貫通開口が形成される領域は、突出端を含んでいれば突起部分だけでなく非突起部分を含んでいてもよく、たとえば、スリットの長手方向寸法が突起の直径よりも大きくてもよい。 The through opening may be formed in at least one of the plurality of protrusions. The shape of the through opening is not limited to the slit shape or the circular shape, and may be another shape such as a rectangular shape. The region in which the through opening is formed may include not only the protruding portion but also the non-protruding portion as long as it includes the protruding end. For example, the longitudinal dimension of the slit may be larger than the diameter of the protrusion.

2:トレランスリング
4:突起
6:スリット(貫通開口)
8:外輪
8a:円筒形状内周面
10:内輪
10a:円筒形状外周面
2: Tolerance ring 4: Protrusion 6: Slit (through opening)
8: Outer ring 8a: Cylindrical inner peripheral surface 10: Inner ring 10a: Cylindrical outer peripheral surface

Claims (6)

円筒形状内周面を有する外輪と、前記外輪の径方向内側に配置され円筒形状外周面を有する内輪との間に圧入され、前記外輪と前記内輪との間の伝達トルクを所定値以下に制限するトレランスリングであって、
径方向外側または径方向内側のいずれか一方に突出する複数の突起が形成され、前記複数の突起の少なくとも1個には突出端を貫通する貫通開口が形成されており、
前記複数の突起が径方向外側に突出している場合には、前記外輪の内周面と前記内輪の外周面との間に圧入された際に前記貫通開口の周縁が前記外輪の内周面に食い込むことにより前記外輪に対する相対回転が抑制され、
前記複数の突起が径方向内側に突出している場合には、前記外輪の内周面と前記内輪の外周面との間に圧入された際に前記貫通開口の周縁が前記内輪の外周面に食い込むことにより前記内輪に対する相対回転が抑制されるトレランスリング。
It is press-fitted between the outer ring having a cylindrical inner peripheral surface and the inner ring having a cylindrical outer peripheral surface arranged inside the outer ring in the radial direction, and limits the transmission torque between the outer ring and the inner ring to a predetermined value or less. It ’s a tolerance ring
A plurality of protrusions projecting to either the radial outer side or the radial inner side are formed, and at least one of the plurality of protrusions is formed with a through opening penetrating the protruding end.
When the plurality of protrusions project outward in the radial direction, the peripheral edge of the through opening becomes the inner peripheral surface of the outer ring when press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. By biting into the outer ring, the relative rotation to the outer ring is suppressed.
When the plurality of protrusions project inward in the radial direction, the peripheral edge of the through opening bites into the outer peripheral surface of the inner ring when it is press-fitted between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. A tolerance ring in which the relative rotation with respect to the inner ring is suppressed.
前記貫通開口は前記突出端を通るスリットを含む、請求項1に記載のトレランスリング。 The tolerance ring according to claim 1, wherein the through opening includes a slit through the protruding end. 前記スリットは周方向に延びている、請求項2に記載のトレランスリング。 The tolerance ring according to claim 2, wherein the slit extends in the circumferential direction. 前記スリットは軸方向に延びている、請求項2に記載のトレランスリング。 The tolerance ring according to claim 2, wherein the slit extends in the axial direction. 前記貫通開口は前記突出端に形成された円形開口を含む、請求項1から4までのいずれかに記載のトレランスリング。 The tolerance ring according to any one of claims 1 to 4, wherein the through opening includes a circular opening formed at the protruding end. 前記複数の突起は半球状に形成されている、請求項1から5までのいずれかに記載のトレランスリング。 The tolerance ring according to any one of claims 1 to 5, wherein the plurality of protrusions are hemispherically formed.
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