JP5682909B2 - Damper device for rotating member - Google Patents

Damper device for rotating member Download PDF

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JP5682909B2
JP5682909B2 JP2010229772A JP2010229772A JP5682909B2 JP 5682909 B2 JP5682909 B2 JP 5682909B2 JP 2010229772 A JP2010229772 A JP 2010229772A JP 2010229772 A JP2010229772 A JP 2010229772A JP 5682909 B2 JP5682909 B2 JP 5682909B2
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support shaft
braking
damper device
annular
rotating member
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JP2012081868A (en
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貞和 岡
貞和 岡
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Uchiyama Manufacturing Corp
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Uchiyama Manufacturing Corp
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Priority to JP2010229772A priority Critical patent/JP5682909B2/en
Priority to PCT/JP2011/073376 priority patent/WO2012050106A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
    • F16F7/06—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together in a direction perpendicular or inclined to the axis of rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
    • B60N3/02—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps
    • B60N3/023—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps movable

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Passenger Equipment (AREA)
  • Vibration Dampers (AREA)

Description

本発明は、例えば、自動車の室内に設置されるアシストグリップやコンソールボックスの蓋等のように、一方向に回転付勢力がかかった状態で使用される回動部材において、前記回転付勢力による回転動作を緩和する為に組み込まれるダンパー装置に関する。   The present invention, for example, in a rotating member used in a state in which a rotational biasing force is applied in one direction, such as an assist grip installed in an automobile interior or a console box cover, is rotated by the rotational biasing force. The present invention relates to a damper device that is incorporated to reduce operation.

自動車の室内に設置されるアシストグリップとして、常時は、ばね等の付勢手段によって、ドア上部の側壁乃至は天井壁に沿った待機位置に保持され、使用時には、グリップ本体を把持し前記付勢手段の付勢力に抗して引き下げるよう回転させて所定の使用位置になるよう構成されたものが広く採用されている。このようなアシストグリップの場合、使用後、グリップ本体を手離すと、前記付勢手段の回転付勢力によって、グリップ本体が勢いよく跳ね上がるよう回転し、天井壁等に衝突して衝撃音が発生し、これが使用者（乗員）に不快感を与えることにもなる。その為、前記アシストグリップのグリップ本体とその取付基部との間に、前記回転付勢力による回転動作を緩和する為のダンパー装置が組み込まれている（例えば、特許文献１〜３参照）。   As an assist grip installed in the interior of an automobile, it is normally held in a standby position along the side wall or ceiling wall of the upper part of the door by an urging means such as a spring. A device that is rotated so as to be pulled down against the urging force of the means to reach a predetermined use position is widely adopted. In the case of such an assist grip, when the grip body is released after use, the grip body rotates so as to jump up vigorously by the rotational urging force of the urging means, and impact sound is generated by colliding with the ceiling wall or the like. This also gives the user (occupant) an uncomfortable feeling. For this reason, a damper device is incorporated between the grip body of the assist grip and the mounting base portion for relaxing the rotational operation by the rotational biasing force (see, for example, Patent Documents 1 to 3).

特開平５−９６９８２号公報JP-A-5-96982 特許第３６１０５３５号公報Japanese Patent No. 3610535 特開２００１−５８５３５号公報JP 2001-58535 A

特許文献１に示されるダンパー装置は、グリップ体（グリップ本体）に一体とされた支承軸を、車体側に固定される粘弾性的なプラスチック材からなる成形体の孔にプレス嵌めし、成形体と支承軸との間で相対運動が可能なように構成されている。このように、成形体と支承軸との相対運動可能な摩擦力を伴った嵌合関係によって、戻しばね（グリップ体を支承軸の軸心回りの一方向に回転付勢する付勢手段）による回転動作を緩和し、グリップ体の室内壁等に対する衝撃を抑制することができる。しかし、この回転動作を緩和する機能の主体が粘弾性的なプラスチック材からなるから、支承軸との間で摩擦力を伴った相対運動を繰り返してゆくうちに、プラスチック材に圧縮永久ひずみが生じ、前記回転動作に対する初期の緩和機能から低下することが予想される。また、プラスチック材と支承軸との間の摩擦力はプラスチック材の性状（粘弾性）によるから、そのコントロールが難しく、しかも、経時的に粘弾性が変化し、これがグリップ体の回転トルクの変動をもたらす。   A damper device disclosed in Patent Document 1 press-fits a support shaft integrated with a grip body (grip body) into a hole of a molded body made of a viscoelastic plastic material fixed to the vehicle body side. And the support shaft are configured to be capable of relative movement. In this way, due to the fitting relationship with the frictional force capable of relative movement between the molded body and the support shaft, the return spring (the biasing means for biasing the grip body in one direction around the axis of the support shaft) is used. The rotating operation can be relaxed and the impact of the grip body on the indoor wall or the like can be suppressed. However, the main component of the function to relieve this rotational motion is made of viscoelastic plastic material. As the relative motion with friction force is repeated with the bearing shaft, compression set is generated in the plastic material. It is expected that the initial relaxation function with respect to the rotation operation will be lowered. Also, since the frictional force between the plastic material and the bearing shaft depends on the properties (viscoelasticity) of the plastic material, it is difficult to control, and the viscoelasticity changes over time, which causes fluctuations in the rotational torque of the grip body. Bring.

特許文献２に示されるアシストグリップは、支承軸に直交する面間で圧接する制動面と制動部材とにより、前記と同様に戻しばねによる回転付勢力を緩和するよう構成されている。しかし、制動面と制動部材とは、戻しばねの軸方向の弾発力によって圧接される為、本来ねじり弾発力を発揮する戻しばねは、ねじり度合いによって軸方向の弾発力が変化し、従って、制動面と制動部材との摩擦力による回転運動の抑制作用の設定が難しいと考えられる。また、特許文献３に示されるアシストグリップは、前記と同様の戻しばねによって一方向に回転付勢されるグリップ本体と、このグリップ本体を回動可能に軸支する固定側との間にシリコン等の高粘度の粘性剤を介在させて、戻しばねによる回転動作を緩和するよう構成されている。この場合、構造的に部品点数が多くなることは否めなかった。   The assist grip shown in Patent Document 2 is configured to relieve the rotational urging force of the return spring in the same manner as described above, by means of a braking surface and a braking member that are press-contacted between surfaces orthogonal to the support shaft. However, since the braking surface and the braking member are pressed against each other by the elastic force in the axial direction of the return spring, the elastic force in the axial direction changes depending on the degree of torsion of the return spring that originally exhibits the torsional elastic force. Therefore, it is considered difficult to set the action of suppressing the rotational motion by the frictional force between the braking surface and the braking member. Further, the assist grip shown in Patent Document 3 is formed of silicon or the like between a grip body that is urged to rotate in one direction by a return spring similar to the above and a fixed side that pivotally supports the grip body. The high-viscosity viscous agent is interposed to relieve the rotational motion of the return spring. In this case, it cannot be denied that the number of parts increases structurally.

本発明は、上記実情に鑑みなされたものであり、部品点数が少なく、回動部材の回転動作に対して安定した緩和効果を奏する新規な回動部材のダンパー装置を提供することを目的としている。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a novel rotating member damper device having a small number of parts and exhibiting a stable relaxation effect with respect to the rotating operation of the rotating member. .

本発明に係る回動部材のダンパー装置は、取付基部に対し、支持軸を介し、該支持軸の軸心回りに回動可能に支持されると共に、付勢手段によって前記軸心回りの一方向に回転付勢力が付与された回動部材において、前記回転付勢力による回転動作を緩和する為、前記取付基部と回動部材との間に介装されるダンパー装置であって、前記支持軸に対してその軸心回りに相対摺接が可能な状態で外嵌されたエラストマーからなる制動部材と、該制動部材の外周に引張り状態で外装され、該制動部材を求心方向に締め付ける円環状ばね部材とを含むことを特徴とする。
The damper device of the rotating member according to the present invention is supported by the mounting base via the support shaft so as to be rotatable about the axis of the support shaft, and is also unidirectional around the axis by the urging means. In the rotating member to which the rotation urging force is applied, the damper device is interposed between the mounting base and the rotation member in order to alleviate the rotation operation by the rotation urging force, and is provided on the support shaft. as the axial center to consist fitted elastomer in relative sliding contact state capable braking member, it is externally while pulling on the outer periphery of said braking member, an annular spring member tightening the said braking member in the centripetal direction against It is characterized by including.

本発明の回動部材のダンパー装置において、前記支持軸が前記取付基部に固着され、前記制動部材が前記回動部材に固定されていること、或いは、前記支持軸が前記回動部材に固着され、前記制動部材が前記取付基部に固定されていること、のいずれであっても良い。また、前記制動部材の前記支持軸との相対摺接部には、潤滑剤が施与されているものとしても良い。この場合、前記制動部材の前記支持軸に対する前記相対摺接部には、前記潤滑剤を保持する凹凸が形成されているものとしても良く、或いは、少なくとも前記制動部材の前記支持軸に対する相対摺接部が、潤滑性物質を含有するエラストマーからなるものとしても良い。   In the rotating member damper device of the present invention, the support shaft is fixed to the mounting base, and the braking member is fixed to the rotating member, or the support shaft is fixed to the rotating member. The braking member may be fixed to the mounting base. Further, a lubricant may be applied to a relative sliding contact portion of the braking member with the support shaft. In this case, the relative sliding contact portion of the braking member with respect to the support shaft may be provided with unevenness for holding the lubricant, or at least the relative sliding contact of the braking member with respect to the support shaft. The part may be made of an elastomer containing a lubricating substance.

本発明のダンパー装置が適用される回動部材は、取付基部に対し、支持軸を介し該支持軸の軸心回りに回動可能に支持され、前記付勢手段によって前記軸心回りの一方向に回転付勢力が付与される。この回転付勢力による回転動作は、前記取付基部と回動部材との間に介装されるダンパー装置によって緩和される。従って、前記付勢手段の付勢力に抗して、回動部材を回転させた後、この付勢力によって回転復帰動作をする際、ダンパー装置によってその回転動作が緩和される。そして、このダンパー装置による前記回転動作の緩和は、前記支持軸に対してその軸心回りに相対摺接が可能な状態で外装された制動部材によってなされ、該制動部材を構成するエラストマー特有の摩擦機能が発揮される。しかも、該制動部材の外周には、環状ばね部材が該制動部材を締め付けるよう外装されているから、制動部材が支持軸に対して弾接するようになっている。従って、部品点数も少ないにも拘わらず、制動部材の安定した弾接状態を長く保つことができる。   The rotating member to which the damper device of the present invention is applied is supported by the mounting base so as to be rotatable around the axis of the support shaft via the support shaft, and is unidirectionally around the axis by the biasing means. A rotational biasing force is applied to. The rotating operation by the rotation urging force is alleviated by a damper device interposed between the mounting base and the rotating member. Therefore, after rotating the rotating member against the urging force of the urging means, when the rotation returning operation is performed by the urging force, the rotating operation is relieved by the damper device. The reduction of the rotational movement by the damper device is performed by a braking member that is externally mounted in a state in which relative sliding contact with the support shaft is possible around the shaft center, and friction inherent to the elastomer that constitutes the braking member. Function is demonstrated. Moreover, since the annular spring member is sheathed on the outer periphery of the brake member so as to tighten the brake member, the brake member is brought into elastic contact with the support shaft. Therefore, although the number of parts is small, a stable elastic contact state of the braking member can be maintained for a long time.

本発明の回動部材のダンパー装置において、前記支持軸が前記取付基部に固着され、前記制動部材が前記回動部材に固定されている場合、回動部材の回転動作と共に、制動部材が固定状態の支持軸の軸心回りに回転し、制動部材の相対摺接部において前記緩和機能が発現される。また、前記支持軸が前記回動部材に固着され、前記制動部材が前記取付基部に固定されている場合、回動部材の回転動作と共に、支持軸がその軸心回りに回転し、固定状態の制動部材との嵌合部において前記緩和機能が発現される。ここでの二種の態様は、同様の機能を奏するものあり、設計仕様に基づき適宜採択されるものであるが、部品の組付け性を考慮すると、前者が望ましく採用される。   In the rotating member damper device according to the present invention, when the support shaft is fixed to the mounting base and the braking member is fixed to the rotating member, the braking member is fixed together with the rotating operation of the rotating member. Rotating about the axis of the support shaft, the relaxation function is exhibited at the relative sliding contact portion of the braking member. In addition, when the support shaft is fixed to the rotating member and the braking member is fixed to the mounting base, the support shaft rotates about its axis along with the rotation of the rotating member, and is in a fixed state. The relaxation function is expressed in the fitting portion with the braking member. The two types here have the same function and are appropriately selected based on the design specifications. However, the former is preferably adopted in consideration of the assembling property of the parts.

本発明の回動部材のダンパー装置において、前記制動部材の前記支持軸との相対摺接部に潤滑剤を施与した場合、この潤滑剤の施与によって、前記回転動作の緩和機能の適宜調整がなし得ると共に、前記エラストマーの支持軸との相対摺接部での磨耗、更には、制動部材の支持軸に対する固着を抑え、その結果、安定的な緩和機能を維持させ、制動部材の長寿命化も図ることができる。この場合、前記制動部材の前記支持軸に対する前記相対摺接部に、前記潤滑剤を保持する凹凸を形成するようにすれば、潤滑剤による前記作用がより効果的に発揮され、且つ、その持続性がより向上する。また、前記潤滑剤の施与に代え、少なくとも前記制動部材の前記支持軸に対する相対摺接部が、潤滑性物質を含有するエラストマーからなるものとすれば、組付け時に潤滑剤を施与する作業が不要とされ、且つ、経時的な前記潤滑作用の減退も抑えることができる。   In the damper device for a rotating member according to the present invention, when a lubricant is applied to the sliding portion of the braking member that is relative to the support shaft, the lubricant is applied to appropriately adjust the relaxation function of the rotating operation. In addition, the wear of the elastomer relative to the support shaft relative to the support shaft, and the sticking of the brake member to the support shaft can be suppressed. As a result, a stable relaxation function can be maintained, and the long life of the brake member can be maintained. Can also be achieved. In this case, if the unevenness for holding the lubricant is formed in the relative sliding contact portion of the braking member with respect to the support shaft, the action by the lubricant is more effectively exhibited and maintained. More improved. Also, instead of applying the lubricant, if at least the relative sliding contact portion of the braking member with respect to the support shaft is made of an elastomer containing a lubricating substance, the operation of applying the lubricant during assembly Can be eliminated, and the deterioration of the lubricating action over time can be suppressed.

本発明に係るダンパー装置の一実施形態が適用されたアシストグリップの一例を示す概略的部分破断正面図である。1 is a schematic partial cutaway front view showing an example of an assist grip to which an embodiment of a damper device according to the present invention is applied. 図１におけるＸ部の拡大図である。It is an enlarged view of the X section in FIG. 図２におけるＹ−Ｙ線矢視断面図である。FIG. 3 is a cross-sectional view taken along line YY in FIG. 2. 同実施形態に用いられる制動部材の支持軸との相対摺接部の他の形状の例を示す概略的断面図である。It is a schematic sectional drawing which shows the example of the other shape of a relative sliding contact part with the support shaft of the braking member used for the embodiment. 同相対摺接部の形状の更に他の例を示す概略的断面図である。It is a schematic sectional drawing which shows the further another example of the shape of the relative sliding contact part. 本発明に用いられる環状ばね部材における変位と荷重との関係を示すグラフである。It is a graph which shows the relationship between the displacement and load in the annular spring member used for this invention. 同ダンパー装置の変形例を示す図２と同様図である。It is the same figure as FIG. 2 which shows the modification of the damper apparatus. 本発明に係るダンパー装置の他の実施形態を示す図２と同様図である。It is a figure similar to FIG. 2 which shows other embodiment of the damper apparatus which concerns on this invention.

以下、本発明の実施の形態について、図面に基づいて説明する。図１は本発明の回動部材のダンパー装置が適用されるアシストグリップの一例を示している。図例の回動部材としてのアシストグリップ１は、自動車の室内側壁部乃至は天井壁部（以下、室内壁部と言う）に取付けられるもので、自動車の乗員が手で把持し得る棒状のグリップ本体部１０と、その両端に屈曲連成された一対の取付脚部１１，１２とよりなる。グリップ本体部１０と取付脚部１１，１２とは、硬質合成樹脂の一体成型体からなり、図示のように横長の略Ｕ字形に形成されている。このアシストグリップ１は、自動車室内の壁部に不図示の止具等によって固定された取付基部２，３に対し、互いに同心の支持軸４，５を介して、これら支持軸４，５の軸心４Ｌ，５Ｌ回りに回動可能に取付けられている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of an assist grip to which the rotating member damper device of the present invention is applied. An assist grip 1 as a rotating member in the illustrated example is attached to an indoor side wall portion or a ceiling wall portion (hereinafter referred to as an indoor wall portion) of an automobile, and is a rod-like grip that can be gripped by an automobile occupant by hand. It comprises a main body portion 10 and a pair of mounting leg portions 11 and 12 which are bent and coupled to both ends thereof. The grip body 10 and the mounting legs 11 and 12 are made of a rigid synthetic resin and are formed in a horizontally long substantially U shape as shown in the figure. The assist grip 1 has shafts of the support shafts 4 and 5 via support shafts 4 and 5 that are concentric with each other with respect to mounting base portions 2 and 3 that are fixed to a wall portion of the vehicle interior by a stopper (not shown). It is attached so as to be rotatable around the cores 4L and 5L.

一方の支持軸（以下、付勢側支持軸と言う）４は、取付基部（以下、付勢側取付基部と言う）２に固着されている。具体的には、付勢側取付基部２は、基部片２ａ，２ｂからなる二股状に形成され、また、付勢側支持軸４は、その先端にセレーション部４ａを備えており、一方の基部片２ａを貫き、対向する他方の基部片２ｂにこのセレーション部４ａを圧入することにより、付勢側取付基部２に軸回転不能に固着されている。前記付勢側支持軸４の固定状態では、一方の取付脚部（以下、付勢側取付脚部という）１１に、付勢側支持軸４が貫通されており、付勢側取付脚部１１は、付勢側支持軸４を介して、付勢側取付基部２の基部片２ａ，２ｂに挟まれるよう、且つ、付勢側支持軸４の軸心４Ｌ回りに回動可能に支持されている。付勢側取付脚部１１と付勢側取付基部２の基部片２ａとの間には、付勢側支持軸４に嵌装されたコイルばね（付勢手段）６が弾装されている。このコイルばね６の一端は付勢側取付基部２（基部片２ａ）に固定乃至係止され、他端は付勢側取付脚部１１に固定乃至係止されている。このような弾装状態のコイルばね６はトーションばねとして機能し、付勢側取付脚部１１は、該コイルばね６によって常時矢印Ｒ方向に回転付勢状態とされる。これによって、アシストグリップ１には、軸心４Ｌ，５Ｌ回りの一方向（矢印Ｒに沿った方向）の回転付勢力が付与され、該アシストグリップ１は、外力が付与されない限り、前記室内壁部に当接した状態で待機維持される。   One support shaft (hereinafter referred to as an urging side support shaft) 4 is fixed to an attachment base (hereinafter referred to as an urging side attachment base) 2. Specifically, the urging side mounting base 2 is formed in a bifurcated shape composed of base pieces 2a and 2b, and the urging side support shaft 4 is provided with a serration portion 4a at the tip thereof. The serration portion 4a is press-fitted into the other base piece 2b that penetrates the piece 2a and is opposed to the urging-side mounting base 2 so that the shaft cannot rotate. In the fixed state of the urging-side support shaft 4, the urging-side support shaft 4 is passed through one mounting leg portion (hereinafter referred to as an urging-side mounting leg portion) 11, and the urging-side mounting leg portion 11. Is supported by the urging-side support shaft 4 so as to be sandwiched between the base pieces 2a and 2b of the urging-side mounting base 2 and rotatable about the axis 4L of the urging-side support shaft 4. Yes. Between the urging side mounting leg 11 and the base piece 2a of the urging side mounting base 2, a coil spring (urging means) 6 fitted on the urging side support shaft 4 is mounted. One end of the coil spring 6 is fixed or locked to the biasing side mounting base 2 (base piece 2 a), and the other end is fixed or locked to the biasing side mounting leg 11. The coil spring 6 in such an elastic state functions as a torsion spring, and the urging-side mounting leg 11 is always urged to rotate in the direction of arrow R by the coil spring 6. As a result, a rotational biasing force in one direction (direction along the arrow R) around the shaft centers 4L and 5L is applied to the assist grip 1, and the assist grip 1 is provided with the interior wall portion unless an external force is applied. Is maintained in a standby state in contact with

他方の支持軸（以下、制動側支持軸と言う）５は、取付基部（以下、制動側取付基部と言う）３に固着されている。具体的には、制動側取付基部３は、基部片３ａ，３ｂからなる二股状に形成され、また、制動側支持軸５は、その先端にセレーション部５ａを備えており、一方の基部片３ａを貫き、対向する他方の基部片３ｂにこのセレーション部５ａを圧入することにより、制動側取付基部３に軸回転不能に固着されている。前記制動側支持軸５の固定状態では、他方の取付脚部（以下、制動側取付脚部という）１２に、制動側支持軸５が貫通されており、制動側取付脚部１２は、制動側支持軸５を介して、制動側取付基部３の基部片３ａ，３ｂに挟まれるよう、且つ、軸心５Ｌ回りに回動可能に支持されている。制動側取付脚部１２には、エラストマーの成型体からなる制動部材７が、制動側支持軸５と同心状に取付けられている。   The other support shaft (hereinafter referred to as a brake side support shaft) 5 is fixed to an attachment base (hereinafter referred to as a brake side attachment base) 3. Specifically, the brake-side mounting base 3 is formed in a bifurcated shape composed of base pieces 3a and 3b, and the brake-side support shaft 5 is provided with a serration portion 5a at its tip, and one base piece 3a. The serration portion 5a is press-fitted into the other base piece 3b facing each other so as to be fixed to the brake-side mounting base 3 so as not to be rotatable. In the fixed state of the braking side support shaft 5, the braking side support shaft 5 is penetrated by the other mounting leg portion (hereinafter referred to as the braking side mounting leg portion) 12, and the braking side mounting leg portion 12 is It is supported via the support shaft 5 so as to be sandwiched between the base pieces 3a and 3b of the braking side mounting base 3 and rotatable about the axis 5L. A braking member 7 made of an elastomer molded body is attached to the braking side mounting leg 12 concentrically with the braking side support shaft 5.

前記制動部材７を構成するエラストマー材としては、エチレンプロピレンゴム（ＥＰＭ）、アクリロニトリルブタジエンゴム（ＮＢＲ）、スチレンブタジエンゴム（ＳＢＲ）、アクリルゴム（ＡＣＭ）、水素化アクリロニトリルブタジエンゴム（ＨＮＢＲ）、シリコーンゴム（ＶＭＱ）、フロロシリコーンゴム（ＦＶＭＱ）、フッ素ゴム（ＦＫＭ）、ブチルゴム、エチレンプロピレンジェン共重合ゴム（ＥＰＤＭ）等のゴム材、熱可塑性エラストマー（オレフィン系、ポリエステル系、ポリアミド系、スチレン系等）等が好ましく採用される。   The elastomer material constituting the braking member 7 includes ethylene propylene rubber (EPM), acrylonitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), acrylic rubber (ACM), hydrogenated acrylonitrile butadiene rubber (HNBR), and silicone rubber. (VMQ), fluorosilicone rubber (FVMQ), fluororubber (FKM), butyl rubber, ethylene propylene copolymer rubber (EPDM) and other rubber materials, thermoplastic elastomers (olefin, polyester, polyamide, styrene, etc.) Etc. are preferably employed.

前記制動部材７によるダンパー装置の構成について、図２及び図３も参照して更に詳細に説明する。前記制動側取付脚部１２は、制動部材７を収納する横穴状の空所１２０を備え、その開口部側（基部片３ａ側）に断面形状が多角形（図３に示す例では正六角形）の保持凹部１２１が形成されている。制動部材７は、外形状が保持凹部１２１と同形状に形成された環状基部７０を保持凹部１２１に圧入することによって、制動側取付脚部１２に相互に回動不能に固定された状態で、前記空所１２０内に収納されている。制動側取付脚部１２と制動部材７との固定は、例示のような多角形状部同士の圧入嵌合による場合に限らず、他の噛み合い形状部分の圧入嵌合や、接着剤による場合、或いは、アシストグリップ（樹脂）１と制動部材（エラストマー）７との同時成型によってなされるようにしても良い。環状基部７０の内周部の径は、制動側支持軸５の外径より大とされ、制動側取付脚部１２と制動部材７との固定状態では、環状基部７０と制動側支持軸５との間に環状空間７０５が形成される。   The configuration of the damper device using the braking member 7 will be described in more detail with reference to FIGS. The braking-side mounting leg portion 12 includes a lateral hole-like space 120 for accommodating the braking member 7, and has a polygonal cross section on the opening side (base piece 3 a side) (regular hexagon in the example shown in FIG. 3). The holding recess 121 is formed. The brake member 7 is fixed to the brake-side mounting leg 12 so as not to rotate with respect to each other by press-fitting an annular base 70 having an outer shape formed in the same shape as the holding recess 121 into the holding recess 121. The space 120 is accommodated. The fixing of the brake-side mounting leg 12 and the brake member 7 is not limited to the case where the polygonal-shaped portions are press-fitted together as illustrated, but the case where the other mesh-shaped portions are press-fitted or adhesive is used, or Alternatively, the assist grip (resin) 1 and the brake member (elastomer) 7 may be simultaneously molded. The diameter of the inner peripheral portion of the annular base portion 70 is larger than the outer diameter of the braking side support shaft 5, and when the braking side mounting leg portion 12 and the braking member 7 are fixed, the annular base portion 70 and the braking side support shaft 5 An annular space 705 is formed between the two.

制動部材７は、前記環状基部７０より前記空所１２０内の奥側（基部片３ｂ側）に向け延出された環状のリップ部７１を片持ち状に有し、その内周部が後記する制動側支持軸５との相対摺接部７２とされている。この相対摺接部７２は、図２では軸心５Ｌ方向に沿った断面形状が凹凸形状とされ、その最小内径が制動側支持軸５の外径よりやや小さく設定されている。前記環状基部７０におけるリップ部７１とは反対側の部分には外向きの鍔状部７３が形成され、前記制動側取付脚部１２と制動部材７との固定状態では、前記保持筒部１２１の開口周縁部にこの鍔状部７３が密着するようになされている。前記リップ部７１の最大外径は、前記空所１２０の内径より小さく、制動部材７が制動側支持軸５に外嵌された状態で、リップ部７１と空所１２０の内壁との間に空間が確保されるように設定されている。そして、リップ部７１の外周に、該リップ部７１を求心方向に締め付ける細径のコイルスプリングからなる環状ばね部材８が引張り状態で嵌装されている。即ち、環状ばね部材８は、コイルスプリングを円環状に形成したものであり、自然状態においては、その環状部の内径が、リップ部７１の外周に形成された環状ばね部材８を装着する為の周溝７５（後記する）の溝底部の外径より小さく設定されている。更に、リップ部７１の基部の肉厚Ｈ１がリップ部７１の肉厚Ｈ２より小さく形成されている。   The braking member 7 has an annular lip portion 71 extending from the annular base portion 70 toward the back side (base piece 3b side) in the space 120 in a cantilever shape, and the inner peripheral portion thereof will be described later. A relative sliding contact portion 72 with the brake side support shaft 5 is provided. In FIG. 2, the relative sliding contact portion 72 has a concave-convex shape in cross section along the direction of the axis 5 </ b> L, and its minimum inner diameter is set slightly smaller than the outer diameter of the brake-side support shaft 5. An outward flange 73 is formed on the opposite side of the annular base portion 70 from the lip portion 71. When the braking side mounting leg portion 12 and the braking member 7 are fixed, the holding cylinder portion 121 is fixed. The flange 73 is in close contact with the peripheral edge of the opening. The maximum outer diameter of the lip portion 71 is smaller than the inner diameter of the space 120, and the space between the lip portion 71 and the inner wall of the space 120 in a state where the braking member 7 is fitted on the brake-side support shaft 5. Is set to be secured. And the annular spring member 8 which consists of a small diameter coil spring which clamps this lip part 71 to a centripetal direction is fitted by the outer periphery of the lip part 71 in the tension | pulling state. That is, the annular spring member 8 is formed by forming a coil spring in an annular shape. In the natural state, the annular spring member 8 has an inner diameter for mounting the annular spring member 8 formed on the outer periphery of the lip portion 71. It is set smaller than the outer diameter of the groove bottom of the circumferential groove 75 (described later). Further, the thickness H1 of the base portion of the lip portion 71 is smaller than the thickness H2 of the lip portion 71.

前記制動部材７は、図示のように、前記二股状の制動側取付基部３に固着された制動側支持軸５に外嵌されるが、前記リップ部７１の相対摺接部７２の内径と制動側支持軸５の外径との大小関係、及び、環状ばね部材８のリップ部７１に対する前記嵌装状態によって、相対摺接部７２が制動側支持軸５の外周に弾性的に圧接する状態とされる。また、リップ部７１の基部の肉厚Ｈ１がリップ部７１の肉厚Ｈ２より小さく形成されていることにより、制動部材７が制動側支持軸５に外嵌された状態では、リップ部７１が基部において弾性変形し、前記相対摺接部７２の制動側支持軸５の外周に対する弾性的な圧接状態がより安定的になされる。図２では、この弾性的に接する部分に潤滑剤ｇが施与されている。潤滑剤ｇとしてグリースや固体潤滑剤等が用いられる。そして、この状態で、制動側取付脚部１２が、制動部材７と共に、制動側支持軸５に対してその軸心５Ｌ回りに回動可能に支持される。前記リップ部７１は、環状基部７０より片持ち状に延出され、且つ、制動部材７が制動側支持軸５に外嵌された状態で、リップ部７１と空所１２０の内壁との間に空間が確保されるよう設定されているから、この外嵌の際におけるリップ部７１の遠心方向への膨大化、更には、アシストグリップ１の回動時における径方向の変位等を許容することができる。   As shown in the figure, the braking member 7 is externally fitted to the braking side support shaft 5 fixed to the bifurcated braking side mounting base 3, but the inner diameter of the relative sliding contact portion 72 of the lip portion 71 and the braking force are fixed. The relative sliding contact portion 72 is elastically pressed against the outer periphery of the brake side support shaft 5 by the magnitude relationship with the outer diameter of the side support shaft 5 and the fitting state of the annular spring member 8 with respect to the lip portion 71. Is done. Further, since the thickness H1 of the base portion of the lip portion 71 is formed to be smaller than the thickness H2 of the lip portion 71, the lip portion 71 is the base portion when the braking member 7 is fitted on the braking side support shaft 5. Thus, the elastic pressure contact state with respect to the outer periphery of the brake-side support shaft 5 of the relative sliding contact portion 72 is made more stable. In FIG. 2, the lubricant g is applied to the elastic contact portion. As the lubricant g, grease, solid lubricant, or the like is used. In this state, the braking side mounting leg portion 12 is supported together with the braking member 7 so as to be rotatable about the axis 5 </ b> L with respect to the braking side support shaft 5. The lip portion 71 extends in a cantilever manner from the annular base portion 70, and the brake member 7 is externally fitted to the brake-side support shaft 5, so that the lip portion 71 is interposed between the lip portion 71 and the inner wall of the space 120. Since the space is set to be secured, it is possible to allow enlargement of the lip portion 71 in the centrifugal direction at the time of the external fitting, and further allow radial displacement or the like when the assist grip 1 is rotated. it can.

また、前記リップ部７１の先端側外周部に、前記周溝７５が形成されている。この周溝７５には、前記環状ばね部材８が収容され、周方向に引っ張り状態でリップ部７１に装着される。この周溝７５における前記リップ部７１の先端側の溝壁部７６は、遠心方向に張出すように形成され、前記環状ばね部材８の外れを防止する抜け止め部とされている。制動部材７の制動側支持軸５に対する支持状態において、制動部材７における前記環状基部７０のリップ部７１の反対側の端面は、二股状の制動側取付基部３の一方の基部片３ａに、後記する制動機能の一部を担うよう弾性的に接している。このような、制動側取付脚部１２、該制動側取付脚部１２に固定された制動部材７、制動側取付基部３、該制動側取付基部３に固定された制動側支持軸５、及び、制動部材７のリップ部７１の外周に嵌装された環状ばね部材８の組付構造によってアシストグリップ１のダンパー装置が構成される。   Further, the circumferential groove 75 is formed on the outer peripheral portion on the tip end side of the lip portion 71. The annular spring member 8 is accommodated in the circumferential groove 75 and is attached to the lip portion 71 in a pulled state in the circumferential direction. A groove wall portion 76 on the distal end side of the lip portion 71 in the circumferential groove 75 is formed so as to project in the centrifugal direction, and serves as a retaining portion that prevents the annular spring member 8 from coming off. In a state in which the braking member 7 is supported with respect to the braking side support shaft 5, an end surface on the opposite side of the lip portion 71 of the annular base 70 on the braking member 7 is formed on one base piece 3 a of the bifurcated braking side mounting base 3. It is elastically in contact with the brake function. Such a braking side mounting leg 12, a braking member 7 fixed to the braking side mounting leg 12, a braking side mounting base 3, a braking side support shaft 5 fixed to the braking side mounting base 3, and The damper device of the assist grip 1 is configured by the assembly structure of the annular spring member 8 fitted on the outer periphery of the lip portion 71 of the braking member 7.

前記ダンパー装置を備えたアシストグリップ１の動作について説明する。当該アシストグリップ１は、図１に示すように、使用しない時には、前記コイルばね６の回転付勢作用によって、グリップ本体部１０が上方に押し上げられ、自動車の室内壁部（不図示）に沿った状態に維持されている。自動車の乗員がグリップ本体部１０を手で把持し、手前に引き下げるよう操作すると、アシストグリップ１は、前記コイルばね６の付勢弾力に抗し、前記軸心４Ｌ，５Ｌの回りに矢印Ｒ方向とは逆方向に回転し、乗員の安定した乗車姿勢に適した位置に維持される。そして、乗員がグリップ本体部１０を手離すと、アシストグリップ１には、前記コイルばね６によって矢印Ｒ方向に回転付勢力が付与されているから、アシストグリップ１は軸心４Ｌ，５Ｌの回りに矢印Ｒ方向に回転して元の待機位置に戻ろうとする。この時、制動側取付脚部１２と制動側支持軸５との間に、前記制動部材７が介装されているから、リップ部７１の相対摺接部７２と、制動側支持軸５との弾性的摺接による制動作用によって、アシストグリップ１の回転動作が緩和され、アシストグリップ１がゆっくりと回転し、室内壁部に強く当接することなく前記待機位置に戻る。従って、グリップ本体部１０を手離した時のアシストグリップ１の急激な動きに伴う不愉快な音の発生がなく、乗員が驚かされたり、戸惑いを覚えたりすることがない。また、衝撃によるアシストグリップ１の毀損等が生じる懸念もない。   The operation of the assist grip 1 provided with the damper device will be described. As shown in FIG. 1, when the assist grip 1 is not in use, the grip body 10 is pushed upward by the rotational biasing action of the coil spring 6, and along the interior wall (not shown) of the automobile. Maintained in a state. When an automobile occupant grips the grip body 10 by hand and operates to pull it down, the assist grip 1 resists the urging elasticity of the coil spring 6 and moves in the direction of the arrow R around the shaft centers 4L and 5L. It is rotated in the opposite direction and maintained at a position suitable for the stable riding posture of the occupant. When the occupant releases the grip body 10, the assist grip 1 is given a rotational biasing force in the direction of the arrow R by the coil spring 6, so that the assist grip 1 is rotated around the shaft centers 4 </ b> L and 5 </ b> L. It tries to return to the original standby position by rotating in the direction of arrow R. At this time, since the braking member 7 is interposed between the braking side mounting leg portion 12 and the braking side support shaft 5, the relative sliding contact portion 72 of the lip portion 71 and the braking side support shaft 5 Due to the braking action by the elastic sliding contact, the rotation operation of the assist grip 1 is relaxed, the assist grip 1 rotates slowly, and returns to the standby position without strongly contacting the indoor wall. Therefore, no unpleasant sound is generated due to the rapid movement of the assist grip 1 when the grip body 10 is released, and the passenger is not surprised or perplexed. Further, there is no concern that the assist grip 1 may be damaged due to an impact.

前記制動部材７におけるリップ部７１の外周には、環状ばね部材８が引張り状態で嵌装されているから、この求心方向への締め付け力によって、リップ部７１の相対摺接部７２と制動側支持軸５の表面との弾性的な相対摺接が安定的になされ、制動部材７を構成するエラストマーに経時的な圧縮永久ひずみや磨耗が生じても、この安定した状態を長く保つことができる。特に、環状ばね部材８としてのコイルばねは、その特性として、図６の変位と荷重との関係を示すグラフのように、変位量（伸長量）の変化に比べて荷重の変化が小さい領域ｒを有している。従って、環状ばね部材８を、この領域ｒになるような伸張状態でリップ部７１の外周に外装するようにすれば、求心方向への締め付け力を受けたリップ部７１は、制動側支持軸５との相対摺接部７２において極めて安定した制動機能を発揮する。ここでの領域ｒになるような伸張状態は、環状ばね部材８の自然状態における前記内径と、前記周溝７５の溝底部との寸法関係によって設定される。更に、環状ばね部材８を金属製のコイルばねからなるものとすれば、経時的なばね特性の変化が少なく、これによって、より安定した制動機能を得ることができる。   Since the annular spring member 8 is fitted to the outer periphery of the lip portion 71 of the braking member 7 in a tensioned state, the relative sliding contact portion 72 of the lip portion 71 and the brake side support are supported by the tightening force in the centripetal direction. The elastic relative sliding contact with the surface of the shaft 5 is made stable, and this stable state can be maintained for a long time even if the elastomer constituting the braking member 7 is subjected to compression set or wear over time. In particular, the coil spring as the annular spring member 8 has a region r in which the change in load is small compared to the change in displacement (elongation), as shown in the graph showing the relationship between displacement and load in FIG. have. Accordingly, if the annular spring member 8 is externally mounted on the outer periphery of the lip portion 71 so as to be in this region r, the lip portion 71 that has received the tightening force in the centripetal direction can be attached to the braking side support shaft 5. A very stable braking function is exhibited at the relative sliding contact portion 72 with the. The stretched state to be the region r here is set by the dimensional relationship between the inner diameter of the annular spring member 8 in the natural state and the groove bottom of the circumferential groove 75. Further, if the annular spring member 8 is made of a metal coil spring, the change in spring characteristics over time is small, and thereby a more stable braking function can be obtained.

本実施形態では、制動部材７の仕様（エラストマー材の材質等）を変更せずとも、環状ばね部材８の前記ばね特性を適宜選択することにより、ダンパー装置として要求される所望の摩擦力を容易に設定することができる。更に付言すれば、制動側支持軸５に対するリップ部７１の圧接力は、制動部材７の弾性力の他に、環状ばね部材８の締め付け力に応じて設定される。即ち、制動部材７については、比較的、弾性力が低くなるよう設定しても、その分を補うような環状ばね部材８を用いることで所望の制動トルク（摩擦力）を得ることができる。従って、制動部材７だけで所望の制動トルクを得ようとする場合に比べて、リップ部７１が制動側支持軸５との接触面で固着することを抑制することができる。   In the present embodiment, the desired frictional force required for the damper device can be easily selected by appropriately selecting the spring characteristics of the annular spring member 8 without changing the specification (elastomer material, etc.) of the braking member 7. Can be set to In addition, the pressure contact force of the lip portion 71 with respect to the brake-side support shaft 5 is set according to the tightening force of the annular spring member 8 in addition to the elastic force of the brake member 7. That is, for the braking member 7, even if the elastic force is set to be relatively low, a desired braking torque (frictional force) can be obtained by using the annular spring member 8 that compensates for that amount. Therefore, it is possible to suppress the lip portion 71 from sticking to the contact surface with the braking-side support shaft 5 as compared with a case where a desired braking torque is obtained only by the braking member 7.

また、図２の例では、前記相対摺接部７２に潤滑剤ｇが施与されているから、アシストグリップ１の前記回転動作の緩和機能の適宜調整がなし得る。加えて、制動部材７の制動側支持軸５との相対摺接部７２でのエラストマーの磨耗、更には、制動側支持軸５に対する固着を抑え、前記相対摺接の持続的安定化と、制動部材７の長寿命化も図ることができる。潤滑剤ｇの施与に代え、前記制動部材７を構成するエラストマー材に、例えばフッ素樹脂等の潤滑性物質を練り込んで自己潤滑性を高める処置を施すようにすれば、組付け時に潤滑剤を施与する作業が不要とされ、且つ、経時的な前記潤滑作用の減退も抑えることができる。この場合、相対摺接部７２のみが潤滑性物質を含有するエラストマーから構成されるようにしても良い。   In the example of FIG. 2, since the lubricant g is applied to the relative sliding contact portion 72, the assist grip 1 can be appropriately adjusted for the relaxation function of the rotational operation. In addition, the abrasion of the elastomer at the relative sliding contact portion 72 of the braking member 7 with the braking-side support shaft 5 and further the sticking to the braking-side support shaft 5 are suppressed, and the relative sliding contact is continuously stabilized, and the braking is performed. The life of the member 7 can be extended. Instead of applying the lubricant g, if the elastomer material constituting the braking member 7 is kneaded with a lubricating substance such as a fluororesin to increase the self-lubricating property, the lubricant is applied during assembly. The operation of applying the oil is not required, and the deterioration of the lubricating action over time can be suppressed. In this case, only the relative sliding contact portion 72 may be made of an elastomer containing a lubricating substance.

前記潤滑剤ｇが施与される前記相対摺接部７２の形状として、図２に示すような断面が波形の凹凸形状とすれば、潤滑剤ｇの保持性が良く、潤滑剤ｇによる前記作用の持続性が向上する。この場合、図２に示すように、前記周溝７５は、制動部材７の軸方向において、相対摺接部７２の凹部と一致する位置に形成されていることが望ましい。図４及び図５は、相対摺接部７２の形状の他の例を示している。図４の例では、周方向の凹条７２ａ及び凸条７２ｂの複数が、前記軸心５Ｌ方向に沿って繰り返す凹凸形状とされている。また、図５の例では、多数のディンプル７２ｃ（一部の図示を簡略化している）とディンプル７２ｃが形成されていない部分とによる凹凸形状とされている。これら凹凸の形成により、相対摺接部７２における潤滑剤ｇの保持性が高められる。このような形状は、制動部材７を成型する為の金型の作製がし易く、好ましく採用されるが、他の凹凸形状（例えば、ディンプル７２ｃに代え多数の小突起の形成）も除外されるものではない。   As the shape of the relative sliding contact portion 72 to which the lubricant g is applied, if the cross section as shown in FIG. 2 has a corrugated uneven shape, the retention of the lubricant g is good, and the action by the lubricant g is achieved. The sustainability is improved. In this case, as shown in FIG. 2, the circumferential groove 75 is preferably formed at a position that coincides with the concave portion of the relative sliding contact portion 72 in the axial direction of the braking member 7. 4 and 5 show another example of the shape of the relative sliding contact portion 72. FIG. In the example of FIG. 4, a plurality of circumferential concave ridges 72 a and ridges 72 b have an uneven shape that repeats along the direction of the axis 5 </ b> L. Further, in the example of FIG. 5, a concavo-convex shape is formed by a large number of dimples 72 c (a part of which is simplified) and a portion where the dimples 72 c are not formed. By forming these irregularities, the retention of the lubricant g in the relative sliding contact portion 72 is enhanced. Such a shape is easy to manufacture a mold for molding the braking member 7 and is preferably adopted, but other uneven shapes (for example, formation of a large number of small protrusions instead of the dimple 72c) are also excluded. It is not a thing.

図７は、上記実施形態のダンパー装置の変形例を示している。図７において、制動部材７の前記環状基部７０におけるリップ部７１とは反対側（基部片３ａ側）の部分には、更に内向きの鍔状部７４がリップ状に形成され、この鍔状部７４の先端が制動側支持軸５の外周に接するように形成されている。そして、この鍔状部７４も含む環状基部７０におけるリップ部７１とは反対側の端面が、制動側取付基部３の基部片３ａに弾性的に接するように形成されている。これによって、制動部材７による制動機能が助長される。また、潤滑剤ｇを施与した場合には、この鍔状部７４によって外部漏出が防止され、潤滑剤ｇによる潤滑作用の持続性を高めることができる。その他の構成は、図２に示す例と同様であるから、共通部分に同一の符号を付し、その説明を割愛する。   FIG. 7 shows a modification of the damper device of the above embodiment. In FIG. 7, an inward hook-like portion 74 is formed in a lip shape on the portion of the annular base portion 70 of the braking member 7 opposite to the lip portion 71 (base piece 3 a side). The tip of 74 is formed so as to contact the outer periphery of the brake-side support shaft 5. And the end surface on the opposite side to the lip | rip part 71 in the cyclic | annular base 70 also including this collar-shaped part 74 is formed so that the base piece 3a of the brake side attachment base 3 may be contact | connected elastically. Thereby, the braking function by the braking member 7 is promoted. Further, when the lubricant g is applied, external leakage is prevented by the hook-like portion 74, and the durability of the lubricating action by the lubricant g can be enhanced. Since the other configuration is the same as the example shown in FIG. 2, the same reference numerals are given to the common parts, and the description thereof is omitted.

図８は、本発明に係るダンパー装置の他の実施形態を示している。この実施形態においては、制動側支持軸５がアシストグリップ１の制動側取付脚部１２に固着され、制動部材７が制動側取付基部３に固定状態で取付けられている。制動側取付脚部１２は制動側取付基部３を挟むよう脚片部１２ａ，１２ｂからなる二股状に形成され、前記制動側支持軸５は、一方の脚片部１２ａ及び制動側取付基部３を貫通し、他方の脚片部１２ｂに固着されている。制動側支持軸５は、前記と同様に先端部にセレーション５ａを有し、このセレーション５ａを制動側取付脚部１２の脚片部１２ｂに圧入することにより、制動側取付脚部１２に対して固着されている。制動側取付基部３は、前記と同様自動車室内の壁部に不図示の止具等によって固定され、制動側取付脚部１２は、制動側取付基部３に対し、制動側支持軸５と共にその軸心５Ｌ回りに回動自在に支持される。   FIG. 8 shows another embodiment of the damper device according to the present invention. In this embodiment, the braking side support shaft 5 is fixed to the braking side mounting leg 12 of the assist grip 1, and the braking member 7 is fixedly attached to the braking side mounting base 3. The braking side mounting leg 12 is formed in a bifurcated shape including leg pieces 12a and 12b so as to sandwich the braking side mounting base 3, and the braking side support shaft 5 includes one leg piece 12a and the braking side mounting base 3. It penetrates and is fixed to the other leg piece 12b. The brake-side support shaft 5 has a serration 5a at the tip as described above. By pressing this serration 5a into the leg piece 12b of the brake-side attachment leg 12, the brake-side support shaft 5 is pressed against the brake-side attachment leg 12. It is fixed. The brake-side mounting base 3 is fixed to a wall portion in the vehicle interior by a stopper (not shown) or the like, as described above, and the brake-side mounting leg 12 is connected to the brake-side mounting base 3 together with the brake-side support shaft 5 in its axis. It is supported so as to be rotatable around the center 5L.

制動側取付基部３には、前記と同様のエラストマーの成型体からなる制動部材７が、制動側支持軸５と同心状に取付けられている。制動側取付基部３には、図２の例に示す制動側取付脚部１２における空所１２０及び保持凹部１２１と同様の空所３０及び保持凹部３１が形成されている。制動部材７は、外形状が保持凹部３１と同形状に形成された環状基部７０を保持凹部３１に圧入することによって、制動側取付基部３に固定された状態で、前記空所３０内に収納されている。制動部材７は、前記環状基部７０より前記空所３０内の奥側（脚片部１２ｂ側）に向け延出された環状のリップ部７１を片持ち状に有し、その内周部が前記と同様に制動側支持軸５との相対摺接部７２とされている。この相対摺接部７２の断面形状も図２に示す例と同様であり、その最小内径が制動側支持軸５の外径よりやや小さく設定されている。前記環状基部７０におけるリップ部７１とは反対側の部分には外向きの鍔状部７３が形成され、前記制動側取付基部３と制動部材７との固定状態では、前記保持筒部３１の開口周縁部にこの鍔状部７３が密着するようになされている。前記リップ部７１の最大外径は、前記空所３０の内径より小さく、制動部材７が制動側支持軸５に外嵌された状態で、リップ部７１と空所３０の内壁との間に空間が確保されるように設定されている。また、リップ部７１の外周に、該リップ部７１を求心方向に締め付ける細径のコイルスプリングからなる環状ばね部材８が前記と同様に嵌装されている。   A braking member 7 made of an elastomer molded body similar to that described above is attached to the braking side mounting base 3 concentrically with the braking side support shaft 5. The brake side mounting base 3 is formed with a space 30 and a holding recess 31 similar to the space 120 and the holding recess 121 in the brake side mounting leg 12 shown in the example of FIG. The braking member 7 is housed in the cavity 30 while being fixed to the brake-side mounting base 3 by press-fitting an annular base 70 whose outer shape is the same shape as the holding recess 31 into the holding recess 31. Has been. The braking member 7 has an annular lip portion 71 extending from the annular base portion 70 toward the back side (the leg piece portion 12b side) in the space 30 in a cantilever shape, and an inner peripheral portion thereof is In the same manner, a relative sliding contact portion 72 with the brake side support shaft 5 is provided. The cross-sectional shape of the relative sliding contact portion 72 is the same as in the example shown in FIG. 2, and the minimum inner diameter is set slightly smaller than the outer diameter of the brake-side support shaft 5. An outward flange 73 is formed in a portion of the annular base portion 70 opposite to the lip portion 71. When the braking side mounting base portion 3 and the braking member 7 are fixed, the opening of the holding cylinder portion 31 is formed. The flange 73 is in close contact with the peripheral edge. The maximum outer diameter of the lip portion 71 is smaller than the inner diameter of the space 30, and the space between the lip portion 71 and the inner wall of the space 30 in a state where the braking member 7 is fitted on the brake-side support shaft 5. Is set to be secured. Further, an annular spring member 8 made of a small-diameter coil spring for fastening the lip portion 71 in the centripetal direction is fitted on the outer periphery of the lip portion 71 in the same manner as described above.

前記制動部材７は、図示のように、制動側取付基部３に固定された制動側支持軸５に外嵌されるが、前記リップ部７１の相対摺接部７２の内径と制動側支持軸５の外径との大小関係、及び、環状ばね部材８のリップ部７１に対する前記嵌装状態によって、相対摺接部７２が制動側支持軸５の外周に弾性的に接する状態とされる。図８の例でも、この弾性的に接する部分に前記と同様の潤滑剤ｇが施与されている。前記リップ部７１は、環状基部７０より片持ち状に延出され、且つ、制動部材７が制動側支持軸５に外嵌された状態で、リップ部７１と空所３０の内壁との間に空間が確保されるよう設定されているから、この外嵌の際におけるリップ部７１の遠心方向への膨大化、更には、アシストグリップ１の回動時における径方向の変位等を許容することができる。また、この支持状態において、制動部材７における前記基部７０におけるリップ部７１とは反対側の端面は、二股状の制動側取付脚部１２の脚片部１２ａに制動機能の一部を担うよう弾性的に接している。   As shown in the figure, the braking member 7 is externally fitted to a braking side support shaft 5 fixed to the braking side mounting base portion 3, but the inner diameter of the relative sliding contact portion 72 of the lip portion 71 and the braking side support shaft 5. The relative sliding contact portion 72 is in elastic contact with the outer periphery of the brake-side support shaft 5 by the magnitude relationship with the outer diameter of the ring spring member 8 and the fitting state of the annular spring member 8 with respect to the lip portion 71. Also in the example of FIG. 8, the same lubricant g as described above is applied to this elastic contact portion. The lip portion 71 is cantilevered from the annular base portion 70, and the brake member 7 is fitted on the brake-side support shaft 5, so that the lip portion 71 is interposed between the lip portion 71 and the inner wall of the space 30. Since the space is set to be secured, it is possible to allow enlargement of the lip portion 71 in the centrifugal direction at the time of the external fitting, and further allow radial displacement or the like when the assist grip 1 is rotated. it can. In this supporting state, the end surface of the base member 70 on the side opposite to the lip 71 is elastic so that the leg piece portion 12a of the bifurcated braking side mounting leg portion 12 bears a part of the braking function. Are touching.

従って、制動側取付脚部１２、該制動側取付脚部１２に固定された制動側支持軸５、制動側取付基部３、該制動側取付基部３に固定された制動部材７、及び、制動部材７のリップ部７１の外周に嵌装された環状ばね部材８の組付構造によってアシストグリップ１のダンパー装置が構成される。この例におけるダンパー装置は、制動側支持軸５及び制動部材７の固定対象が前記実施形態と異なるが、制動側支持軸５及び制動部材７の弾性的相対摺接関係は同様であり、その奏する作用効果も同様であるので、ここではその説明を割愛する。この例において、制動部材７の構造を、図４、図５及び図７の例と同様にすることはもとより可能である。   Therefore, the braking side mounting leg 12, the braking side support shaft 5 fixed to the braking side mounting leg 12, the braking side mounting base 3, the braking member 7 fixed to the braking side mounting base 3, and the braking member The damper device of the assist grip 1 is configured by the assembly structure of the annular spring member 8 fitted on the outer periphery of the lip portion 71 of the seven. The damper device in this example is different from the above-described embodiment in the fixation target of the brake side support shaft 5 and the brake member 7, but the elastic relative sliding contact relationship between the brake side support shaft 5 and the brake member 7 is the same and has the effect. Since the effect is also the same, the description is omitted here. In this example, it is possible to make the structure of the braking member 7 the same as in the examples of FIGS. 4, 5, and 7.

尚、前記の実施形態では、自動車のアシストグリップに適用した例について述べたが、これに限らず、例えば、コンソールボックス、自動車に装備された灰皿、家電製品、家庭用ダストボックス等の各種蓋等のように、軸心回りの一方向に回転付勢力が付与された回動部材であれば、本発明のダンパー装置を適用することにより同様の作用効果を得ることができる。また、アシストグリップ１の構造、取付基部２，３の構造、制動部材７の構造及びその固定構造等も、実施形態に限定されるものではない。更に、リップ部７１における相対摺接部７２の形状は、例示のものに限定されず、例えば、周方向に不連続な形状、即ち、全周が制動側支持軸５に摺接するものに限らず、一部が摺接するものであっても良い。加えて、制動側支持軸５の断面形状も、円形に限らず他の形状とすることも可能である。   In addition, although the example applied to the assist grip of the automobile has been described in the above-described embodiment, the present invention is not limited thereto. For example, various lids such as a console box, an ashtray equipped in the automobile, a home appliance, a household dust box, etc. As described above, if the rotating member is provided with a rotational urging force in one direction around the axis, the same effect can be obtained by applying the damper device of the present invention. Further, the structure of the assist grip 1, the structure of the mounting bases 2 and 3, the structure of the braking member 7, the fixing structure thereof, and the like are not limited to the embodiment. Furthermore, the shape of the relative slidable contact portion 72 in the lip portion 71 is not limited to the illustrated one, but is not limited to, for example, a shape that is discontinuous in the circumferential direction, that is, the entire periphery that is in slidable contact with the brake-side support shaft 5. , A part may be in sliding contact. In addition, the cross-sectional shape of the brake-side support shaft 5 is not limited to a circular shape, but may be other shapes.

１ アシストグリップ（回動部材）
２ 取付基部（付勢側）
３ 取付基部（制動側）
４ 支持軸（付勢側）
５ 支持軸（制動側）
６ コイルスプリング(付勢手段）
７ 制動部材
７２ 相対摺接部
７２ａ，７２ｂ 凹条、凸条（凹凸）
７２ｃ ディンプル（凹凸）
８ 環状ばね部材
ｇ 潤滑剤 1 Assist grip (rotating member)
2 Mounting base (biasing side)
3 Mounting base (braking side)
4 Support shaft (biasing side)
5 Support shaft (braking side)
6 Coil spring (biasing means)
7 Braking member 72 Relative slidable contact portion 72a, 72b Concave strip, convex strip
72c Dimple (Unevenness)
8 Annular spring member g Lubricant

Claims (6)

取付基部に対し、支持軸を介し、該支持軸の軸心回りに回動可能に支持されると共に、付勢手段によって前記軸心回りの一方向に回転付勢力が付与された回動部材において、前記回転付勢力による回転動作を緩和する為、前記取付基部と回動部材との間に介装されるダンパー装置であって、
前記支持軸に対してその軸心回りに相対摺接が可能な状態で外嵌されたエラストマーからなる制動部材と、該制動部材の外周に引張り状態で外装され、該制動部材を求心方向に締め付ける円環状ばね部材とを含むことを特徴とする回動部材のダンパー装置。 A rotating member that is supported by the mounting base via a support shaft so as to be rotatable about the axis of the support shaft, and that is provided with a rotational biasing force in one direction around the axis by the biasing means. A damper device interposed between the mounting base and the rotating member in order to reduce the rotational operation by the rotational biasing force,
A braking member made of an elastomer that is externally fitted to the support shaft so as to be capable of relative sliding contact with the support shaft, and an outer periphery of the braking member that is externally pulled, and is tightened in the centripetal direction. damper device of the rotating member, characterized in that it comprises an annular spring member. 請求項１に記載の回動部材のダンパー装置において、
前記支持軸が前記取付基部に固着され、前記制動部材は前記回動部材に固定される環状基部と、該環状基部から片持ち状に延出された環状のリップ部とを備え、前記円環状ばね部材は当該リップ部に外装されていることを特徴とする回動部材のダンパー装置。 The damper device for a rotating member according to claim 1,
The support shaft is fixed to said mounting base, said brake member comprises an annular base portion that will be fixed to the rotary member, and a lip portion of the annular extending in a cantilever manner from the annular base portion, the annular A damper device for a rotating member, wherein the spring member is sheathed on the lip portion . 請求項１に記載の回動部材のダンパー装置において、
前記支持軸が前記回動部材に固着され、前記制動部材は前記取付基部に固定される環状基部と、該環状基部から片持ち状に延出された環状のリップ部とを備え、前記円環状ばね部材は当該リップ部に外装されていることを特徴とする回動部材のダンパー装置。 The damper device for a rotating member according to claim 1,
The support shaft is fixed to the rotating member, the brake member comprises an annular base portion that will be fixed to the mounting base, and a lip portion of the annular extending in a cantilever manner from the annular base portion, the annular A damper device for a rotating member, wherein the spring member is sheathed on the lip portion . 請求項２又は３に記載の回動部材のダンパー装置において、In the damper device of the rotating member according to claim 2 or 3,
前記リップ部の延出方向先端側外周部には周溝が形成され、前記円環状ばね部材は当該周溝に収容された状態で前記リップ部に外装され、前記周溝における前記リップ部の先端側の溝壁部は遠心方向に張出すように形成されていることを特徴とする回動部材のダンパー装置。A circumferential groove is formed on the outer peripheral portion on the distal end side in the extending direction of the lip portion, and the annular spring member is packaged on the lip portion while being accommodated in the circumferential groove, and the distal end of the lip portion in the circumferential groove The groove member on the side is formed so as to project in the centrifugal direction. 請求項１乃至４のいずれか１項に記載の回動部材のダンパー装置において、In the damper device of the rotation member according to any one of claims 1 to 4,
前記制動部材の前記支持軸との相対摺接部には、潤滑剤が施与されていることを特徴とする回動部材のダンパー装置。A damper device for a rotating member, wherein a lubricant is applied to a relative sliding contact portion of the braking member with the support shaft. 請求項５に記載の回動部材のダンパー装置において、In the damper device of the rotation member according to claim 5,
前記制動部材の前記支持軸に対する前記相対摺接部には、前記潤滑剤を保持する凹凸が形成されていることを特徴とする回動部材のダンパー装置。The rotating member damper device is characterized in that an unevenness for holding the lubricant is formed in the relative sliding contact portion of the braking member with respect to the support shaft.
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