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JP5154459B2 - Cushion clip - Google Patents

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Publication number
JP5154459B2
JP5154459B2 JP2009008607A JP2009008607A JP5154459B2 JP 5154459 B2 JP5154459 B2 JP 5154459B2 JP 2009008607 A JP2009008607 A JP 2009008607A JP 2009008607 A JP2009008607 A JP 2009008607A JP 5154459 B2 JP5154459 B2 JP 5154459B2
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Prior art keywords
cushion
side wall
wall portion
compression
clip
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JP2009008607A
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JP2010164171A (en
Inventor
準弥 鵜飼
晴久 神谷
利夫 岩原
玲子 山本
篤史 小林
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Toyota Motor Corp
Daiwa Kasei Industry Co Ltd
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Toyota Motor Corp
Daiwa Kasei Industry Co Ltd
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Priority to JP2009008607A priority Critical patent/JP5154459B2/en
Priority to US12/686,515 priority patent/US20100192335A1/en
Priority to CN2010100037898A priority patent/CN101782123B/en
Publication of JP2010164171A publication Critical patent/JP2010164171A/en
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Publication of JP5154459B2 publication Critical patent/JP5154459B2/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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/3732—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having an annular or the like shape, e.g. grommet-type resilient mountings
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/422—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing the stressing resulting in flexion of the spring
    • F16F1/426—Radial flexion of ring-type springs
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/0472—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by comprising a damping device
    • F16F9/0481—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by comprising a damping device provided in an opening to the exterior atmosphere
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Vibration Dampers (AREA)
  • Insertion Pins And Rivets (AREA)

Description

この発明はクッションクリップに関する。具体的には固定部材と可動部材のいずれかに形成された取付孔に対して係止され、固定部材と可動部材の間に位置して、固定部材に可動部材が接近する際の衝撃を吸収するクッションクリップに関する。   The present invention relates to a cushion clip. Specifically, it is locked to the mounting hole formed in either the fixed member or the movable member, and is positioned between the fixed member and the movable member to absorb the impact when the movable member approaches the fixed member. It relates to a cushion clip.

この種のクッションクリップには、衝撃を吸収するクッション部と固定部材または可動部材に形成された取付孔に係止させるための係止部とが一体化された構成とされているものがある。そして、この構成のクッションクリップでは、クッション部が軟質樹脂材により中空の略円筒形状に形成されており、固定部材に可動部材が接近すると、固定部材と可動部材の間でクッションクリップのクッション部が弾性変形により押し縮められて、衝撃を吸収する。   This type of cushion clip includes a structure in which a cushion portion that absorbs an impact and an engaging portion that is engaged with an attachment hole formed in a fixed member or a movable member are integrated. And in the cushion clip of this structure, the cushion part is formed in the hollow substantially cylindrical shape with the soft resin material, and when the movable member approaches the fixed member, the cushion part of the cushion clip is located between the fixed member and the movable member. It is compressed by elastic deformation and absorbs impact.

先行技術として、特開２００６−１５３０８３号公報（特許文献１）には、クッション部が中空とされクッション部の底部に凸部が形成されたクッションクリップが記載されている。また、特開２００７−２２５０９３号公報（特許文献２）には、クッション部の側壁が蛇腹状とされクッション部の底部に突起が形成されたクッションクリップが記載されている。   As a prior art, Japanese Patent Laying-Open No. 2006-153083 (Patent Document 1) describes a cushion clip in which a cushion portion is hollow and a convex portion is formed at the bottom of the cushion portion. Japanese Unexamined Patent Application Publication No. 2007-225093 (Patent Document 2) describes a cushion clip in which the side wall of the cushion portion is bellows and a protrusion is formed on the bottom portion of the cushion portion.

図７に特許文献１に記載されたクッションクリップとほぼ同一の構成のクッションクリップ１０１の一部断面による正面図を示す。クッションクリップ１０１は、衝撃を吸収するクッション部１１０と、クッション部１１０を固定部材に取付けるための係止部１２０とを備えており、クッション部１１０は弾性を有する軟質材で形成され、係止部１２０は所定の剛性を有する硬質材で形成されている。そして、クッション部１１０の側壁部１１２の外形は略円錐状とされており、クッション部１１０の内部には空洞部１４０が形成されており、空洞部１４０の側壁１８０はほぼ垂直とされている。そして、空洞部１４０には先端側に向けて開口する略円形の開口部１６０が設けられており、空洞部１４０の基底部には、先端側に向けて突出する凸部１９０が設けられている。   FIG. 7 shows a front view with a partial cross section of a cushion clip 101 having substantially the same configuration as the cushion clip described in Patent Document 1. FIG. The cushion clip 101 includes a cushion portion 110 that absorbs an impact, and a locking portion 120 for attaching the cushion portion 110 to a fixing member. The cushion portion 110 is formed of a soft material having elasticity, and the locking portion. 120 is formed of a hard material having a predetermined rigidity. And the external shape of the side wall part 112 of the cushion part 110 is made into the substantially cone shape, the cavity part 140 is formed in the inside of the cushion part 110, and the side wall 180 of the cavity part 140 is made substantially perpendicular | vertical. The cavity 140 is provided with a substantially circular opening 160 that opens toward the tip, and the base of the cavity 140 is provided with a protrusion 190 that protrudes toward the tip. .

ところで、特許文献１に記載されたクッションクリップ１０１は、自動車部品であるグラブボックスの蓋を閉じる時の衝撃を吸収するためのものである。そして、グラブボックスに用いられるクッションクリップは次の役割を担っている。
（１）走行時の車の揺れによりグラブドアが振動することを防ぐ。
（２）手や肘などでグラブドアを強く押した場合にもドアとボックスが直接当たることを防ぎ、異音の発生やグラブドアおよびグラブボックスの傷つきを防止する。
（３）グラブドアの建付けのばらつきやロック機構によるガタツキを吸収して、グラブドアの開閉ができる。
（４）グラブドアを開いた時にクッションクリップが見えても大きさ、形が不快でない。 Incidentally, the cushion clip 101 described in Patent Document 1 is for absorbing an impact when closing a lid of a grab box which is an automobile part. And the cushion clip used for a grab box has the following role.
(1) Prevent the grab door from vibrating due to the shaking of the car during driving.
(2) Even when the grab door is strongly pressed with a hand or elbow, the door and the box are prevented from directly hitting, and the generation of abnormal noise and the damage of the grab door and the grab box are prevented.
(3) The grab door can be opened and closed by absorbing variations in the construction of the grab door and rattling by the locking mechanism.
(4) Even when the cushion clip is visible when the grab door is opened, the size and shape are not uncomfortable.

そこで、上述の各役割を果たすために、グラブボックスに用いられるクッションクリップは次の特性を有することが必要となる。
（１）グラブドアを閉じた状態では振動に耐えうる十分な反力がある。
（２）大荷重の入力時には大きな反力を出す。
（３）どの建付けでも必要な反力が得られるよう、圧縮量の変化による反力の変化が少ない。
（４）小型であり、かつ、いびつでない。
そして、この特性を満たせない場合は、グラブドアが振動して異音が発生する、あるいはグラブドアが閉まらない等の問題が発生する。 Therefore, in order to play the above-described roles, the cushion clip used in the grab box needs to have the following characteristics.
(1) When the grab door is closed, there is a sufficient reaction force that can withstand vibration.
(2) A large reaction force is generated when a large load is input.
(3) Change in reaction force due to change in compression is small so that the required reaction force can be obtained in any installation.
(4) It is small and not distorted.
If this characteristic cannot be satisfied, problems such as the vibration of the grab door and the generation of abnormal noise or the closure of the grab door may occur.

そこで、この種のクッションクリップには、反力荷重と圧縮量の関係について、次の特性を有することが求められる。
（１）圧縮初期は、早期に必要な反力が得られるよう、圧縮量当たりの反力の増加が大きいこと。
（２）必要な反力が得られた後の圧縮中期は、圧縮量当たりの反力の増加量を抑えられること。
（３）大きな圧縮幅がとれた後の圧縮後期は、圧縮量当たりの反力増加量を大きくすること。
図８に、上述した反力荷重と圧縮量の関係を、理想荷重線として示す。図８のｂ点における反力荷重は最低反力荷重を示しており、車両の揺れによりグラブドアが振動して異音が発生するのを押さえることができる大きさを有する。そして、図８のｅ点における反力荷重は最高反力荷重を示しており、グラブドアのロックが解除できなくなり、開かなくなる大きさを有する。最高反力荷重を越えてクッションクリップの反力が大きくなると、グラブドアを開かないようにロックしているピンの摩擦が増えて、大きな力でグラブドアのドアノブを引っ張らないとグラブドアが開かなくなる。
このｂ点の最低反力荷重とｅ点の最高反力荷重の間が使用したい荷重の範囲であり、この間の圧縮量が大きいほど、ドアの建て付けのばらつきに対する対応幅が広くなる。なお、以下の説明では、最低反力荷重と最高反力荷重の間の圧縮量をクッションクリップのストロークと呼ぶ。 Therefore, this type of cushion clip is required to have the following characteristics regarding the relationship between the reaction force load and the compression amount.
(1) In the initial stage of compression, the reaction force per compression amount must be increased so that the necessary reaction force can be obtained early.
(2) The increase in the reaction force per compression amount can be suppressed in the middle of compression after the necessary reaction force is obtained.
(3) In the latter half of the compression period after a large compression width is obtained, increase the reaction force increase amount per compression amount.
FIG. 8 shows the relationship between the reaction force load and the compression amount described above as an ideal load line. The reaction force load at the point b in FIG. 8 indicates the minimum reaction force load, and has a size capable of suppressing the generation of abnormal noise due to vibration of the grab door due to the shaking of the vehicle. The reaction force load at the point e in FIG. 8 indicates the maximum reaction force load, and the grab door cannot be unlocked and does not open. If the reaction force of the cushion clip increases beyond the maximum reaction force load, the friction of the pin that locks the grab door will not increase, and the grab door will not open unless the door knob of the grab door is pulled with a large force.
The range between the minimum reaction force load at the point b and the maximum reaction force load at the point e is a range of a load to be used. In the following description, the amount of compression between the lowest reaction force load and the highest reaction force load is referred to as a cushion clip stroke.

特開２００６−１５３０８３号公報JP 2006-153083 A 特開２００７−２２５０９３号公報JP 2007-225093 A

ところで、特許文献１に記載のクッションクリップ１０１は、側壁部１１２および凸部１９０の圧縮により反力を得る仕組みであるため、反力は圧縮量の増加に伴いその積分値として増加する。そのため、圧縮量当たりの反力の増加が多く、圧縮中期の圧縮量は理想荷重線の半分程度であって、ドアの建て付けのばらつきに対する対応幅が狭いという問題がある。そして、圧縮中期を越えてさらに圧縮しようとすると、クッション部の側壁が底部の凸部に干渉して反力荷重が高くなり、圧縮が困難となる。また、特許文献２に記載のクッションクリップも荷重線の圧縮中期の圧縮量が理想荷重線の半分程度であり、圧縮中期における圧縮でクッション部の側壁の蛇腹同士が当たって粘着音が発生し、さらに圧縮量を大きくすると側壁が底部の支柱に干渉して圧縮荷重が高くなり、圧縮が困難となる。   Incidentally, since the cushion clip 101 described in Patent Document 1 has a mechanism for obtaining a reaction force by compressing the side wall portion 112 and the convex portion 190, the reaction force increases as an integral value as the amount of compression increases. For this reason, there is a large increase in the reaction force per compression amount, the compression amount in the middle of compression is about half of the ideal load line, and there is a problem that the range of response to variations in door installation is narrow. When further compression is attempted beyond the middle compression stage, the side wall of the cushion part interferes with the convex part at the bottom part, and the reaction force load increases, making compression difficult. In addition, the cushion clip described in Patent Document 2 also has a compression amount in the middle of compression of the load line is about half of the ideal load line, and the bellows on the side wall of the cushion part hit each other by compression in the middle of compression, and an adhesive sound is generated. If the amount of compression is further increased, the side wall interferes with the bottom column and the compression load increases, making compression difficult.

そこで、ストロークを確保するために、従来技術のクッションクリップの円筒状の側壁の長さを伸ばしてクッション部を縦長形状とすると、圧縮の途中でクッション部のバランスが崩れて、クッション部が途中でへの字に折れ曲がってしまう。そのため、最後まで縦方向に圧縮できず必要な反発力が得られないため、衝撃を吸収することができない。
そして、クッション部のバランスが崩れないようにするためには、クッション部の長さと共にクッション部の底部の直径も大きくしてクッションクリップ全体を大型化しなければならず、クッションクリップの搭載スペースを広く取ることが必要となる。しかし、クッションクリップの搭載スペースを広く取ることは設計の制約で困難な場合もある。また、クッションクリップを大型化すると見栄えも良くない。 Therefore, in order to secure the stroke, if the length of the cylindrical side wall of the conventional cushion clip is extended to make the cushion part a vertically long shape, the balance of the cushion part is lost during compression, and the cushion part is in the middle. It bends into a letter. Therefore, the impact cannot be absorbed because it cannot be compressed in the longitudinal direction to the end and a necessary repulsive force cannot be obtained.
And in order to keep the balance of the cushion part, the diameter of the bottom part of the cushion part as well as the length of the cushion part must be increased to enlarge the entire cushion clip, and the cushion clip mounting space is widened. It is necessary to take. However, it may be difficult to take a large space for mounting the cushion clip due to design restrictions. Further, when the cushion clip is enlarged, the appearance is not good.

そこで、本発明が解決しようとする課題は、クッションクリップの大型化によらず、ストロークが長く、かつ、途中で折れ曲がることなく必要な反発力が得られるクッションクリップを提供することにある。   Therefore, the problem to be solved by the present invention is to provide a cushion clip that has a long stroke and can provide a necessary repulsive force without bending in the middle, regardless of the size of the cushion clip.

上記課題を解決するため、本発明にかかるクッションクリップは次の手段をとる。
本発明は、固定部材と可動部材のいずれかに形成された取付孔に対して係止され、固定部材と可動部材の間に位置して、固定部材に可動部材が接近する際の衝撃を吸収するクッションクリップであって、
衝撃を吸収するクッション部と前記取付孔に係止させるための係止部とが一体化された構成とされており、
前記クッション部は底部と側壁部とを備えた中空形状とされ、該側壁部の内側壁および外側壁は底部側から先端に向かって縮径する円錐形状とされ、該側壁部の外側壁は高さ方向に直線状とされており、
前記側壁部の先端には、内側壁が径方向内側に張り出し中央に円形の開口孔が設けられた頂上部が形成されており、
前記側壁部の肉厚は底部側から先端に向かって薄くなり、
前記頂上部の下端の径方向の肉厚が前記側壁部の上部の径方向の肉厚よりも厚くされることで、クッション部にかかる荷重に対して該側壁部の上部が最も撓みやすくされており、荷重が増加すると、該側壁部は屈曲変形し、その屈曲部位が該側壁部の先端から底部へと移動するように構成されている。 In order to solve the above problems, the cushion clip according to the present invention takes the following means.
This onset Ming is locked for any which is formed in the mounting hole of the fixed member and the movable member, positioned between the fixed member and the movable member, the impact when the movable member to approach the fixed member A cushion clip to absorb,
The cushion part that absorbs the impact and the locking part for locking to the mounting hole are integrated.
The cushion portion has a hollow shape including a bottom portion and a side wall portion, the inner wall and the outer wall of the side wall portion have a conical shape with a diameter decreasing from the bottom side toward the tip, and the outer wall of the side wall portion has a high height. It is straight in the direction,
At the tip of the side wall portion, an inner wall extends radially inward and a top is formed with a circular opening hole in the center ,
The thickness of the side wall portion decreases from the bottom side toward the tip,
By making the radial thickness of the lower end of the top portion thicker than the radial thickness of the upper portion of the side wall portion, the upper portion of the side wall portion is most easily bent with respect to the load applied to the cushion portion. When the load increases, the side wall portion is bent and deformed, and the bent portion moves from the tip of the side wall portion to the bottom portion .

この発明によれば、初期の圧縮の段階では円錐状とされた側壁部の外側壁は圧縮方向に直線状であるため突っ張り、圧縮初期の荷重が立ち上がる。そして、クッション部の側壁部が外側に張り出して円筒状に変形する。さらに荷重が増加すると、円筒状に張り出していた側壁部が内側に丸められるように曲がりながら圧縮され、反力荷重が僅かに増加して圧縮量が増大する。そして、クッション部の側壁部がクッション部の底部に当たるまでは曲げにより圧縮が進むため、圧縮抵抗が急激に増大することはないので、ストロークが長い。
よって、クッションクリップの大型化によらず、ストロークが長く、かつ、途中で折れ曲がることなく必要な反発力を得られるクッションクリップを提供することができる。 According to inventions of this, the outer wall of the side wall portion that is conical at the stage of initial compression strut for a straight in the compression direction, the load of the compression initial rises. And the side wall part of a cushion part protrudes outside and deform | transforms into a cylindrical shape. When the load further increases, the side wall portion that extends in a cylindrical shape is compressed while being bent so as to be rounded inward, the reaction force load slightly increases, and the amount of compression increases. And since compression advances by bending until the side wall part of a cushion part contacts the bottom part of a cushion part, since compression resistance does not increase rapidly, a stroke is long.
Therefore, it is possible to provide a cushion clip that has a long stroke and can obtain a necessary repulsive force without being bent in the middle, regardless of the size of the cushion clip.

また、この発明によれば、側壁部は上方ほど薄く曲がりやすい構成のため、側壁部の屈曲部位は側壁部の上方から下方に移動して、側壁部の曲げによりクッション部の圧縮が進む。よって、クッションクリップの大型化によらず、ストロークが長く、かつ、途中で折れ曲がることなく必要な反発力を得られるクッションクリップを提供することができる。 Further, according to the inventions of this, the side wall portion because the thin pliable structure as above, the bent portion of the side wall is moved from the upper side wall portion downward, the cushion portion compression proceeds by bending of the side wall portions . Therefore, it is possible to provide a cushion clip that has a long stroke and can obtain a necessary repulsive force without being bent in the middle, regardless of the size of the cushion clip.

上述の本発明によれば、次の効果が得られる。すなわち、本発明によれば、側壁部の屈曲部位は側壁部の上方から下方に移動し、側壁部の曲げによりクッション部の圧縮が進む。よって、クッションクリップの大型化によらず、ストロークが長く、かつ、途中で折れ曲がることなく必要な反発力を得られるクッションクリップを提供することができる。
According to the onset Ming above, the following effects can be obtained. That is, according to the present invention, the bent portion of the side wall portion moves from the upper side to the lower side of the side wall portion, and the compression of the cushion portion proceeds by the bending of the side wall portion. Therefore, it is possible to provide a cushion clip that has a long stroke and can obtain a necessary repulsive force without being bent in the middle, regardless of the size of the cushion clip.

一実施例におけるクッションクリップの外観斜視図である。It is an external appearance perspective view of the cushion clip in one Example. 一実施例におけるクッションクリップの縦断面図である。It is a longitudinal cross-sectional view of the cushion clip in one Example. 一実施例におけるクッションクリップの圧縮初期における変形状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the deformation | transformation state in the compression initial stage of the cushion clip in one Example. 一実施例におけるクッションクリップの圧縮中期の初期段階における変形状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the deformation | transformation state in the initial stage of the compression middle stage of the cushion clip in one Example. 一実施例におけるクッションクリップの圧縮中期における変形状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the deformation | transformation state in the compression middle stage of the cushion clip in one Example. 一実施例におけるクッションクリップの圧縮中期の最終段階における変形状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the deformation | transformation state in the final stage of the compression middle stage of the cushion clip in one Example. 従来技術によるクッションクリップの一部断面による正面図である。It is a front view by the partial cross section of the cushion clip by a prior art. ストローク量の大きいクッションクリップの理想荷重線を示す図である。It is a figure which shows the ideal load line of a cushion clip with a large stroke amount.

以下、本発明を実施するための形態について実施例にしたがって説明する。
図１に本発明の一実施例におけるクッションクリップ１０の外観斜視図を示す。クッションクリップ１０は、自動車のグラブボックスのボックス本体５０（図３参照）に形成された取付孔５２（図３参照）に係止されて、グラブボックスのボックス本体５０とドア５４（図３参照）の間に位置して、ドア５４を閉めた時の衝撃を吸収するクッションクリップである。そして、衝撃を吸収するクッション部２０と取付孔５２に係止させる係止部４０が一体化された構成とされている。ボックス本体５０が本発明の固定部材に相当し、ドア５４が本発明の可動部材に相当する。 Hereinafter, modes for carrying out the present invention will be described according to examples.
FIG. 1 shows an external perspective view of a cushion clip 10 according to an embodiment of the present invention. The cushion clip 10 is locked to a mounting hole 52 (see FIG. 3) formed in the box body 50 (see FIG. 3) of the grab box of the automobile, and the box body 50 and the door 54 (see FIG. 3) of the grab box. It is a cushion clip which absorbs the impact when it closes and the door 54 is closed. And the cushion part 20 which absorbs an impact and the latching | locking part 40 latched by the attachment hole 52 are set as the structure integrated. The box body 50 corresponds to the fixed member of the present invention, and the door 54 corresponds to the movable member of the present invention.

図２にクッションクリップ１０の縦断面図を示す。クッションクリップ１０のクッション部２０は底部２４と側壁部２２とを備えた中空形状とされ、側壁部２２の内側壁２８および外側壁２６は底部側から先端に向かって直線的に縮径する円錐形状とされている。そして、側壁部２２の肉厚は底部側から先端に向かって薄くなる構成とされており、側壁部２２の先端には、内側壁２８が径方向内側に張り出し中央に円形の開口孔２５が設けられた頂上部３０が形成されており、開口孔２５の下方には中空部３２が形成されている。
そして、頂上部３０は内側壁２８が径方向内側に張り出した構成のため、頂上部３０の下端の径方向の肉厚は、頂上部３０の下方に続く側壁部２２の上部の肉厚よりも厚い構成とされている。
そして、図１及び図２に示すとおり、側壁部２２には、底部２４に近い箇所において内外に通じるエア抜き孔２３が形成されている。なお、エア抜き孔２３は、クッション部２０の変形特性に影響を与えない構成とされている。 FIG. 2 shows a longitudinal sectional view of the cushion clip 10. The cushion portion 20 of the cushion clip 10 has a hollow shape including a bottom portion 24 and a side wall portion 22, and the inner wall 28 and the outer wall 26 of the side wall portion 22 have a conical shape that linearly decreases in diameter from the bottom side toward the tip. It is said that. The thickness of the side wall portion 22 is reduced from the bottom side toward the front end, and the inner side wall 28 projects radially inward from the front end of the side wall portion 22 and a circular opening hole 25 is provided in the center. The top portion 30 is formed, and a hollow portion 32 is formed below the opening hole 25.
And since the top part 30 is the structure which the inner side wall 28 protruded to radial inside, the thickness of the radial direction of the lower end of the top part 30 is thicker than the thickness of the upper part of the side wall part 22 following the top part 30. It is thick.
As shown in FIGS. 1 and 2, the side wall portion 22 is formed with an air vent hole 23 communicating with the inside and outside at a location close to the bottom portion 24. Note that the air vent hole 23 is configured not to affect the deformation characteristics of the cushion portion 20.

クッションクリップ１０の係止部４０は、図２に示すように、クッション部２０の底部２４に埋め込まれた円板形状の基部４２と、下方に突出しボックス本体５０（図３参照）の取付孔５２（図３参照）に挿入される係止脚４４とを備えている。
そして、クッション部２０はエラストマで形成され、係止部４０はポリプロピレンで形成されて、クッション部２０と係止部４０が２色成形により一体化された構成とされている。 As shown in FIG. 2, the locking portion 40 of the cushion clip 10 includes a disc-shaped base portion 42 embedded in the bottom portion 24 of the cushion portion 20, and a mounting hole 52 of the box body 50 (see FIG. 3) protruding downward. And a locking leg 44 to be inserted (see FIG. 3).
The cushion portion 20 is made of elastomer, the locking portion 40 is made of polypropylene, and the cushion portion 20 and the locking portion 40 are integrated by two-color molding.

図３〜図６にボックス本体５０に取付けられたクッションクリップ１０の変形状態を表す縦断面図を示す。
図３はドア５４がクッション部２０に当たり、クッション部２０の圧縮を開始した直後の圧縮初期の段階で、図８のａ点とｂ点の間に対応する変形状態を示している。この段階では側壁部２２の外側壁２６が圧縮方向に直線状から円弧状に変形して突っ張り、圧縮量にほぼ比例した状態で反力荷重が立ち上がる。 The longitudinal cross-sectional view showing the deformation | transformation state of the cushion clip 10 attached to the box main body 50 to FIGS. 3-6 is shown.
FIG. 3 shows a deformed state corresponding to a point between points a and b in FIG. 8 at the initial stage of compression immediately after the door 54 hits the cushion part 20 and compression of the cushion part 20 is started. At this stage, the outer wall 26 of the side wall portion 22 is deformed and stretched from a linear shape to an arc shape in the compression direction, and the reaction force load rises in a state substantially proportional to the compression amount.

図４は、圧縮初期の段階が終わり、クッション部２０の側壁部２２が円筒状に変形した状態を示している。図８のｂ点とｃ点の間に対応する変形状態である。クッションクリップ１０のクッション部２０の側壁部２２は、外側壁２６及び内側壁２８が上方に向かって縮径する円錐形状であり、側壁部２２の肉厚が底部から先端に向かって薄くなる構成とされている。そして、クッション部２０の頂上部３０の下端の径方向の肉厚は、頂上部３０の下方に続く側壁部２２の上部の肉厚よりも厚い。そのため、クッション部２０は側壁部２２の上部が最も撓みやすい構成とされている。そこで、側壁部２２の突っ張りにより圧縮初期の荷重が立ち上がった後、圧縮中期の初期の段階ではクッション部２０の頂上部３０のすぐ下の側壁部２２が高さ方向の断面で見て円弧状に撓み、クッション部２０の頂上部３０が押し下げられて内側に丸められるように変形する。そして、さらに下方の側壁部２２は壁面が圧縮方向に直線状であって下方に向かって肉厚となる構成のため、圧縮方向に撓むことなく突っ張り、側壁部２２が外側に張り出す。そのため、クッション部２０の側壁部２２が円筒状に変形する。   FIG. 4 shows a state where the initial stage of compression is finished and the side wall 22 of the cushion part 20 is deformed into a cylindrical shape. It is a deformation | transformation state corresponding between the point b and c point of FIG. The side wall portion 22 of the cushion portion 20 of the cushion clip 10 has a conical shape in which the outer wall 26 and the inner wall 28 are reduced in diameter upward, and the thickness of the side wall portion 22 decreases from the bottom toward the tip. Has been. The radial thickness of the lower end of the top portion 30 of the cushion portion 20 is thicker than the thickness of the upper portion of the side wall portion 22 that continues below the top portion 30. Therefore, the cushion part 20 is configured such that the upper part of the side wall part 22 is most easily bent. Therefore, after the load in the initial stage of compression rises due to the stretching of the side wall part 22, the side wall part 22 immediately below the top 30 of the cushion part 20 is in an arc shape in a cross section in the height direction in the initial stage of the middle stage of compression. It bends and deforms so that the top 30 of the cushion part 20 is pushed down and rounded inward. Further, the lower side wall portion 22 has a wall surface that is linear in the compression direction and becomes thicker in the downward direction, so that the side wall portion 22 protrudes outward without being bent in the compression direction. Therefore, the side wall portion 22 of the cushion portion 20 is deformed into a cylindrical shape.

図５にドア５４が閉められ、図示しないロック機構が働いてドア５４がボックス本体５０にロックされた状態におけるクッション部２０の変形状態を示す。圧縮中期で、図８のｃ点とｄ点の間に対応する変形状態である。
図４に示した状態からさらに荷重が増加すると、円筒状に突っ張っていた側壁部２２が内側に丸められるように曲がりながら変形する。ここで、クッション部２０の側壁部２２は上方ほど薄いため曲がりやすい。そして、側壁部２２は下方ほど肉厚で径も大きくなるため、曲げに対する抗力は側壁部２２の下方ほど大きくなる。そこで、側壁部２２が曲がり始めると、側壁部２２の屈曲部位は上方から下方へと移動し、反力荷重が僅かに増加しながら圧縮量が増大する。ここで、クッションクリップ１０ではクッション部２０の内側の中空部３２には突起等の障害物がないので、側壁部２２がクッション部２０の底部２４に当たるまでは曲げ特性により変形し、反力荷重が急激に増大することはない。そして、反力荷重が僅かに増加する状態でクッション部２０の圧縮が進み、側壁部２２が底部２４に当たる前に、図５に示した状態でドア５４のロックが終了する。 FIG. 5 shows a deformed state of the cushion portion 20 in a state in which the door 54 is closed and a lock mechanism (not shown) is activated and the door 54 is locked to the box body 50. This is a deformed state corresponding to the point between points c and d in FIG.
When the load further increases from the state shown in FIG. 4, the side wall portion 22 that has been stretched in a cylindrical shape is deformed while being bent so as to be rounded inward. Here, since the side wall part 22 of the cushion part 20 is so thin that it is upwards, it is easy to bend. And since the side wall part 22 is thicker and the diameter becomes larger as it goes down, the resistance to bending becomes larger as it goes down the side wall part 22. Therefore, when the side wall portion 22 begins to bend, the bent portion of the side wall portion 22 moves from the upper side to the lower side, and the amount of compression increases while the reaction force load slightly increases. Here, in the cushion clip 10, there is no obstacle such as a protrusion in the hollow portion 32 inside the cushion portion 20, so the side wall portion 22 is deformed due to the bending characteristics until the side wall portion 22 contacts the bottom portion 24 of the cushion portion 20, and the reaction load is increased. It does not increase rapidly. Then, the compression of the cushion portion 20 proceeds with the reaction load slightly increased, and the door 54 is locked in the state shown in FIG. 5 before the side wall portion 22 hits the bottom portion 24.

ドア５４がロックされた状態で、ドア５４がさらに押されると、図６に示すようにクッション部２０の頂上部３０がクッション部２０の底部２４に当たった状態となる。図６は圧縮中期の最終段階の変形状態を示しており、図８のｅ点に対応する変形状態である。図６の状態からさらに圧縮しようとすると、曲げ特性による変形から圧縮特性による変形に変化するため、反力荷重が急激に大きくなる。   When the door 54 is further pushed while the door 54 is locked, the top 30 of the cushion portion 20 comes into contact with the bottom 24 of the cushion portion 20 as shown in FIG. FIG. 6 shows a deformed state at the final stage of the middle stage of compression, which is a deformed state corresponding to the point e in FIG. When further compression is attempted from the state of FIG. 6, the reaction force load increases rapidly because the deformation due to the bending characteristic changes to the deformation due to the compression characteristic.

上述の一実施例によれば、クッション部が圧縮初期は突っ張り、圧縮中期は曲げ特性で屈曲部位が上方から下方へ移動する構成のため、クッションクリップの大型化によらず、ストロークが長く、かつ、途中で折れ曲がることなく必要な反発力を得られるクッションクリップを提供することができる。   According to the above-described embodiment, the cushion portion is stretched in the initial stage of compression, and in the middle stage of compression, the bending portion moves from the upper side to the lower side due to the bending characteristics. It is possible to provide a cushion clip that can obtain a necessary repulsive force without being bent halfway.

上述の一実施例では、クッション部２０の側壁部２２の肉厚が底部側から先端に向かって薄くなる構成としたが、側壁部２２の肉厚を高さ方向で一定とすることもできる。側壁部２２の肉厚を一定としても、側壁部は上方に向けて縮径しているので、上方ほど側壁部２２の断面積が小さく曲がりやすい特性を有するため、圧縮中期では曲げ特性で屈曲部位が上方から下方へと移動するので、クッションクリップの大型化によらず、ストロークが長く、かつ、途中で折れ曲がることなく必要な反発力を得られるクッションクリップを提供することができる。   In the above-described embodiment, the thickness of the side wall portion 22 of the cushion portion 20 is reduced from the bottom side toward the front end. However, the thickness of the side wall portion 22 may be constant in the height direction. Even if the thickness of the side wall portion 22 is constant, the side wall portion is reduced in diameter toward the upper side, so that the cross-sectional area of the side wall portion 22 is smaller and more easily bent toward the upper side. Can move from the upper side to the lower side, it is possible to provide a cushion clip having a long stroke and capable of obtaining a necessary repulsive force without being bent in the middle, regardless of the size of the cushion clip.

そして、上述の一実施例によれば、クッション部はエラストマにより形成されているため軟質で、衝撃を吸収して弾性変形するのに適しており、係止部はポリプロピレンで形成されているため剛性が高く、取付孔への係止が安定する。そして、クッション部と係止部は２色成形により一体化されているので、クッション部と係止部の結合が強固であって一体化の構造が安定しており、取り扱いが容易である。   According to the above-described embodiment, the cushion portion is soft because it is formed of an elastomer, and is suitable for elastically deforming by absorbing an impact, and the locking portion is rigid because it is formed of polypropylene. And the locking to the mounting hole is stable. And since the cushion part and the latching | locking part are integrated by 2 color molding, the coupling | bonding of a cushion part and a latching | locking part is firm, the integrated structure is stable, and handling is easy.

上述の一実施例では、クッション部をエラストマで形成し、係止部をポリプロピレンで形成し、２色成形によりクッション部と係止部を一体化しているが、本発明に係るクッションクリップの材質及びクッション部と係止部の一体化方法はこれに限定されない。
クッション部をゴムや軟質の樹脂材で形成し、係止部を硬質の樹脂材、例えばポリアセタールで形成して、多色成形あるいはインサート成形によりクッション部と係止部を一体化しても良い。 In the above embodiment, the cushion portion is formed of elastomer, the locking portion is formed of polypropylene, and the cushion portion and the locking portion are integrated by two-color molding. The method for integrating the cushion portion and the locking portion is not limited to this.
The cushion portion may be formed of rubber or a soft resin material, the locking portion may be formed of a hard resin material such as polyacetal, and the cushion portion and the locking portion may be integrated by multicolor molding or insert molding.

また、クッション部と係止部をゴムまたはエラストマ等の軟質の樹脂材により一色成形によって形成しても良い。一色成形とすれば、製造工程が単純化され、金型等のコストの低減を図ることができる。
その他、本発明に係るクッションクリップはその発明の思想の範囲で、各種の形態で実施できるものである。 Further, the cushion portion and the locking portion may be formed by one-color molding with a soft resin material such as rubber or elastomer. If one-color molding is used, the manufacturing process is simplified, and the cost of a mold or the like can be reduced.
In addition, the cushion clip according to the present invention can be implemented in various forms within the scope of the idea of the invention.

１０ クッションクリップ
２０ クッション部
２２ 側壁部
２３ エア抜き孔
２４ 底部
２５ 開口孔
２６ 外側壁
２８ 内側壁
３０ 頂上部
３２ 中空部
４０ 係止部
４２ 基部
４４ 係止脚
５０ ボックス本体（固定部材）
５２ 取付孔
５４ ドア（可動部材）
DESCRIPTION OF SYMBOLS 10 Cushion clip 20 Cushion part 22 Side wall part 23 Air vent hole 24 Bottom part 25 Open hole 26 Outer side wall 28 Inner side wall 30 Top part 32 Hollow part 40 Locking part 42 Base part 44 Locking leg 50 Box main body (fixing member)
52 Mounting hole 54 Door (movable member)

Claims (1)

固定部材と可動部材のいずれかに形成された取付孔に対して係止され、固定部材と可動部材の間に位置して、固定部材に可動部材が接近する際の衝撃を吸収するクッションクリップであって、
衝撃を吸収するクッション部と前記取付孔に係止させるための係止部とが一体化された構成とされており、
前記クッション部は底部と側壁部とを備えた中空形状とされ、該側壁部の内側壁および外側壁は底部側から先端に向かって縮径する円錐形状とされ、該側壁部の外側壁は高さ方向に直線状とされており、
前記側壁部の先端には、内側壁が径方向内側に張り出し中央に円形の開口孔が設けられた頂上部が形成されており、
前記側壁部の肉厚は底部側から先端に向かって薄くなり、
前記頂上部の下端の径方向の肉厚が前記側壁部の上部の径方向の肉厚よりも厚くされることで、クッション部にかかる荷重に対して該側壁部の上部が最も撓みやすくされており、荷重が増加すると、該側壁部は屈曲変形し、その屈曲部位が該側壁部の先端から底部へと移動するように構成されているクッションクリップ。 A cushion clip that is locked to an attachment hole formed in one of the fixed member and the movable member, and is located between the fixed member and the movable member, and absorbs an impact when the movable member approaches the fixed member. There,
The cushion part that absorbs the impact and the locking part for locking to the mounting hole are integrated.
The cushion portion has a hollow shape including a bottom portion and a side wall portion, the inner wall and the outer wall of the side wall portion have a conical shape with a diameter decreasing from the bottom side toward the tip, and the outer wall of the side wall portion has a high height. It is straight in the direction,
At the tip of the side wall portion, an inner wall extends radially inward and a top is formed with a circular opening hole in the center ,
The thickness of the side wall portion decreases from the bottom side toward the tip,
By making the radial thickness of the lower end of the top portion thicker than the radial thickness of the upper portion of the side wall portion, the upper portion of the side wall portion is most easily bent with respect to the load applied to the cushion portion. The cushion clip is configured such that when the load increases, the side wall portion is bent and deformed, and the bent portion moves from the front end to the bottom portion of the side wall portion .
JP2009008607A 2009-01-19 2009-01-19 Cushion clip Active JP5154459B2 (en)

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