JP5964137B2 - Grommet - Google Patents

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JP5964137B2
JP5964137B2 JP2012120519A JP2012120519A JP5964137B2 JP 5964137 B2 JP5964137 B2 JP 5964137B2 JP 2012120519 A JP2012120519 A JP 2012120519A JP 2012120519 A JP2012120519 A JP 2012120519A JP 5964137 B2 JP5964137 B2 JP 5964137B2
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grommet
divided
mounting member
axial direction
divided body
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JP2013245776A (en
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茂樹 蛇谷
茂樹 蛇谷
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Nok Corp
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Description

本発明は、防振技術に係るグロメットに関する。本発明のグロメットは例えば自動車等車両の関連分野で用いられ、または一般産業用機械の分野などで用いられる。   The present invention relates to a grommet according to a vibration isolation technique. The grommet of the present invention is used, for example, in the related field of vehicles such as automobiles, or in the field of general industrial machinery.

従来から図４に示すように、ゴム状弾性体よりなる筒状のグロメット５１が知られており、このグロメット５１は図示するように、その外周面に設けた溝部５３に一方の取付部材６１の穴部６２の周縁部６３を嵌め込むことにより一方の取付部材（例えば吸気管ブラケット）６１に取り付けられるとともに、その中心軸穴５２に差し込んだボルト６４をナット６５に締結することにより他方の取付部材（例えば車両ボディ）６６に取り付けられ、両取付部材６１，６６を防振のうえ連結する機能を発揮する。   Conventionally, as shown in FIG. 4, a cylindrical grommet 51 made of a rubber-like elastic body is known. As shown in the figure, this grommet 51 has a groove 53 provided on the outer peripheral surface thereof and one mounting member 61. By fitting the peripheral edge 63 of the hole 62, it is attached to one attachment member (for example, an intake pipe bracket) 61, and the other attachment member is fastened to the nut 65 by fastening a bolt 64 inserted into the central shaft hole 52 thereof. It is attached to (for example, a vehicle body) 66 and exhibits a function of connecting both attachment members 61 and 66 after vibration isolation.

しかしながら、このグロメット５１はゴム状弾性体による一体の成形品として成形されているために、以下の問題がある。   However, since this grommet 51 is formed as an integral molded product of a rubber-like elastic body, there are the following problems.

すなわち、グロメット５１の外径が一方の取付部材６１の穴部６２の内径より大きく設定されているため、グロメット５１を一方の取付部材６１に取り付ける際にグロメット５１を大きく弾性変形させる必要がある。したがって取付時、グロメット５１に亀裂などが発生することがある。   That is, since the outer diameter of the grommet 51 is set to be larger than the inner diameter of the hole 62 of the one attachment member 61, it is necessary to elastically deform the grommet 51 when attaching the grommet 51 to the one attachment member 61. Therefore, a crack etc. may occur in grommet 51 at the time of attachment.

また、このようにグロメット５１を大きく弾性変形させつつグロメット５１に亀裂などが発生しないように慎重に取り付ける必要があるため、取付作業に熟練を要し、多くの手間と時間がかかる。また、このようにグロメット５１を取り付けにくいと云うことは、グロメット５１を取り外しにくいと云うことでもある。   In addition, since it is necessary to carefully attach the grommet 51 so that the grommet 51 is not elastically deformed so that cracks or the like are not generated, the attaching operation requires skill and takes a lot of labor and time. In addition, when it is difficult to attach the grommet 51 in this manner, it is also difficult to remove the grommet 51.

また、グロメット５１は取付部材６１の形状に合わせて専用の形状にて製作するため、取付部材６１の板厚寸法が変更されると、新たな形状で作り直す必要があり、汎用性がない。   Further, since the grommet 51 is manufactured in a dedicated shape in accordance with the shape of the mounting member 61, if the plate thickness dimension of the mounting member 61 is changed, it is necessary to make it again in a new shape, which is not versatile.

特開２００８−９５８８５号公報JP 2008-95885 A

本発明は以上の点に鑑みて、グロメットを取付部材に取り付ける際にグロメットを大きく弾性変形させる必要がなく、よってグロメットに亀裂などが発生することがなく、取付作業を容易化することもできるグロメットを提供することを目的とする。   In view of the above points, the present invention eliminates the need to greatly elastically deform the grommet when the grommet is attached to the attachment member. The purpose is to provide.

またこれに加えて、取付部材の板厚寸法が変更されてもグロメットを装着することができ、よって汎用性を備えるグロメットを提供することを目的とする。   In addition to this, it is an object to provide a grommet that can be fitted with a grommet even if the plate thickness dimension of the mounting member is changed.

上記目的を達成するため、本発明の請求項１によるグロメットは、ゴム状弾性体よりなり、筒状を呈し、外周面に取付部材の穴部の周縁部を嵌め込む溝部を設けた防振用のグロメットにおいて、当該グロメットは、軸方向に２分割されることにより前記穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備え、前記一方および他方の分割体は、前記挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えるとともに、前記取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで前記抜け止め用係合部が係合し、前記一方の分割体は、前記取付部材の板厚方向一方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記穴部に差し込まれる外筒部とを一体に備え、前記他方の分割体は、前記取付部材の板厚方向他方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記外筒部の内周側に差し込まれる内筒部とを一体に備え、前記抜け止め用係合部は、前記外筒部の内周面に設けられた係合突起と、前記内筒部の外周面に設けられた係合突起との組み合わせよりなり、前記両係合突起間に遊び隙間が設定された状態から前記両係合突起が係合した状態となるまでの間で前記両分割体が軸方向にスライド可能とされていることを特徴とする。 In order to achieve the above object, a grommet according to claim 1 of the present invention is made of a rubber-like elastic body, has a cylindrical shape, and has an outer peripheral surface provided with a groove portion into which a peripheral edge portion of a hole portion of a mounting member is fitted. In this grommet, the grommet is provided with one divided body inserted from one axial direction into the hole by being divided into two in the axial direction, and the other divided body inserted from the other axial direction, The one and the other divided bodies are provided with an engaging portion for retaining to be engaged with each other after the insertion to prevent the retaining member from being attached to each other, and the shafts can be attached to each other so that they can be mounted even if the thickness of the mounting member is changed. and the omission engaging the stop engaging portion upon which is slidable in the direction, the one of the split body includes a seating portion for seating in the plate thickness direction on one surface of said mounting member, of the seat It is provided on the circumferential side and in the hole And the other divided body is provided on a seating portion seated on the other surface in the plate thickness direction of the mounting member, and provided on the inner peripheral side of the seating portion and the outer tube And an inner cylindrical portion that is inserted into the inner peripheral side of the inner portion, wherein the engagement preventing portion is provided with an engaging protrusion provided on an inner peripheral surface of the outer cylindrical portion, and an outer peripheral surface of the inner cylindrical portion. The two split bodies are pivoted between a state in which a clearance gap is set between the engagement protrusions and a state in which the engagement protrusions are engaged with each other. It is slidable in the direction .

また、本発明の請求項２によるグロメットは、ゴム状弾性体よりなり、筒状を呈し、外周面に取付部材の穴部の周縁部を嵌め込む溝部を設けた防振用のグロメットにおいて、当該グロメットは、軸方向に２分割されることにより前記穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備え、前記一方および他方の分割体は、前記挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えるとともに、前記取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで前記抜け止め用係合部が係合し、前記一方の分割体は、前記着座部および外筒部間にスリットを備え、および／または前記他方の分割体は、前記着座部および内筒部間にスリットを備え、当該グロメットは、前記スリットの大きさまたは形状により当該グロメットのバネ定数を調整可能とされていることを特徴とする。 The grommet according to claim 2 of the present invention is a vibration-proof grommet that is made of a rubber-like elastic body, has a cylindrical shape, and has a groove portion that fits the peripheral edge portion of the hole portion of the mounting member on the outer peripheral surface. The grommet is provided with one divided body that is inserted into the hole from one side in the axial direction by being divided into two in the axial direction, and the other divided body that is inserted from the other in the axial direction. After the insertion, the split bodies include a locking engagement portion that engages with each other to prevent the locking, and can be slid in the axial direction so that they can be mounted even if the thickness of the mounting member is changed. And then the one retaining member is provided with a slit between the seating portion and the outer tube portion, and / or the other divided member is the seating portion and A slit is provided between the inner cylinders. The grommet is characterized by being adjustable spring constant of the grommet according to the size or shape of the slit.

また、本発明の請求項３によるグロメットは、ゴム状弾性体よりなり、筒状を呈し、外周面に取付部材の穴部の周縁部を嵌め込む溝部を設けた防振用のグロメットにおいて、当該グロメットは、軸方向に２分割されることにより前記穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備え、前記一方および他方の分割体は、前記挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えるとともに、前記取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで前記抜け止め用係合部が係合し、前記一方の分割体は、前記取付部材の板厚方向一方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記穴部に差し込まれる外筒部とを一体に備え、前記他方の分割体は、前記取付部材の板厚方向他方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記外筒部の内周側に差し込まれる内筒部とを一体に備え、前記抜け止め用係合部は、前記外筒部の内周面に設けられた係合突起と、前記内筒部の外周面に設けられた係合突起との組み合わせよりなり、前記両係合突起間に遊び隙間が設定された状態から前記両係合突起が係合した状態となるまでの間で前記両分割体が軸方向にスライド可能とされ、前記一方の分割体は、前記着座部および外筒部間にスリットを備え、および／または前記他方の分割体は、前記着座部および内筒部間にスリットを備え、当該グロメットは、前記スリットの大きさまたは形状により当該グロメットのバネ定数を調整可能とされていることを特徴とする。 Further, the grommet according to claim 3 of the present invention is a vibration-proof grommet made of a rubber-like elastic body, having a cylindrical shape, and provided with a groove portion into which the peripheral edge portion of the hole portion of the mounting member is fitted on the outer peripheral surface. The grommet is provided with one divided body that is inserted into the hole from one side in the axial direction by being divided into two in the axial direction, and the other divided body that is inserted from the other in the axial direction. After the insertion, the split bodies include a locking engagement portion that engages with each other to prevent the locking, and can be slid in the axial direction so that they can be mounted even if the thickness of the mounting member is changed. After that, the engagement member for retaining is engaged, and the one divided body is provided on a seating portion seated on one surface in the plate thickness direction of the mounting member, and on an inner peripheral side of the seating portion. Together with the outer cylinder part to be inserted into the hole part The other divided body is provided on a seating portion that is seated on the other surface in the plate thickness direction of the mounting member, and is provided on the inner peripheral side of the seating portion and is inserted on the inner peripheral side of the outer cylinder portion And an engaging projection provided on the outer peripheral surface of the inner cylindrical portion, and an engaging projection provided on the outer peripheral surface of the inner cylindrical portion. The two split bodies are slidable in the axial direction from the state in which a play gap is set between the both engaging protrusions to the state in which the both engaging protrusions are engaged, The one divided body is provided with a slit between the seating portion and the outer cylinder portion, and / or the other divided body is provided with a slit between the seating portion and the inner cylinder portion, and the grommet is formed of the slit. The spring constant of the grommet can be adjusted according to the size or shape. It is characterized in that is.

また、本発明の請求項４によるグロメットは、上記した請求項１、２または３記載のグロメットにおいて、前記一方および他方の分割体は、互いに同種のゴム材料によって成形され、または互いに異なる種類のゴム材料によって成形されていることを特徴とする。   The grommet according to a fourth aspect of the present invention is the grommet according to the first, second, or third aspect, wherein the one and the other divided bodies are formed of the same kind of rubber material or different kinds of rubber. It is formed by a material.

更にまた、本発明の請求項５によるグロメットは、上記した請求項１、２、３または４記載のグロメットにおいて、前記一方および他方の分割体は、ゴム硬度を互いに同一に設定され、またはゴム硬度を互いに異なるように設定されていることを特徴とする。   Furthermore, the grommet according to claim 5 of the present invention is the grommet according to claim 1, 2, 3 or 4, wherein the one and the other divided bodies are set to have the same rubber hardness, or the rubber hardness. Are set to be different from each other.

上記構成を備える本発明においては、グロメットが、軸方向に２分割されることにより取付部材の穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備えているため、これら分割体はいずれも、取付部材に取り付ける際に大きく弾性変形する必要のない形状とすることが可能とされる。また、これら分割体は穴部への挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えているため、取付部材から外れにくい。また、これら分割体は取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで抜け止め用係合部が係合するため、このスライドする範囲で取付部材の板厚寸法の変更に対応することが可能とされる。   In the present invention having the above configuration, the grommet is divided into two in the axial direction, so that one divided body inserted from one axial direction into the hole portion of the mounting member and the other inserted from the other axial direction. Since each of the divided bodies is provided with a divided body, it can be formed into a shape that does not need to be greatly elastically deformed when attached to the mounting member. In addition, since these divided bodies are provided with a retaining engagement portion that engages with each other to prevent the separation after being inserted into the hole portion, it is difficult to be detached from the mounting member. In addition, these divided bodies are slidable in the axial direction so that they can be mounted even if the plate thickness of the mounting member is changed, and the engaging portions for retaining are engaged. It is possible to cope with a change in the plate thickness dimension of the member.

一方および他方の分割体は、以下の構造とするのが好適である。   It is preferable that the one and the other divided bodies have the following structure.

すなわち一方の分割体は、取付部材の板厚方向一方の面に着座する着座部と、着座部の内周側に設けられるとともに穴部に差し込まれる外筒部とを一体に備えるものとする。他方の分割体は、取付部材の板厚方向他方の面に着座する着座部と、着座部の内周側に設けられるとともに外筒部の内周側に差し込まれる内筒部とを一体に備えるものとする。抜け止め用係合部は、外筒部の内周面に設けられた係合突起と、内筒部の外周面に設けられた係合突起との組み合わせよりなるものとする。そして両係合突起間に遊び隙間が設定された状態から両係合突起が係合した状態となるまでの間で両分割体が軸方向にスライド可能とされているため、このスライドする範囲で取付部材の板厚寸法の変更に対応することが可能とされる。   That is, one divided body is integrally provided with a seating portion seated on one surface in the plate thickness direction of the mounting member and an outer cylinder portion provided on the inner peripheral side of the seating portion and inserted into the hole portion. The other divided body is integrally provided with a seating portion that is seated on the other surface in the plate thickness direction of the mounting member, and an inner cylindrical portion that is provided on the inner peripheral side of the seating portion and that is inserted into the inner peripheral side of the outer cylindrical portion. Shall. The retaining engagement portion is a combination of an engagement protrusion provided on the inner peripheral surface of the outer cylinder portion and an engagement protrusion provided on the outer peripheral surface of the inner cylinder portion. Since both the split bodies are slidable in the axial direction from the state in which the play gap is set between the both engaging protrusions to the state in which the both engaging protrusions are engaged, in this sliding range It is possible to cope with a change in the thickness of the mounting member.

上記構造において一方の分割体は、取付部材の板厚方向一方の面に着座する着座部と、着座部の内周側に設けられるとともに穴部に差し込まれる外筒部とを一体に備えているので、この着座部および外筒部間にスリットを設けることにより一方の分割体のバネ定数を低下させることが可能とされる、またこのようにスリットを設ける場合、スリットの大きさや形状を変更するにより一方の分割体のバネ定数を調整することが可能とされる。同様に他方の分割体は、取付部材の板厚方向他方の面に着座する着座部と、着座部の内周側に設けられるとともに外筒部の内周側に差し込まれる内筒部とを一体に備えているので、この着座部および内筒部間にスリットを設けることにより他方の分割体のバネ定数を低下させることが可能とされる、またこのようにスリットを設ける場合、スリットの大きさや形状を変更するにより他方の分割体のバネ定数を調整することが可能とされる。したがってこれらによりグロメット全体としてのバネ定数を調整することが可能とされる。   In the above structure, one divided body is integrally provided with a seating portion that is seated on one surface in the plate thickness direction of the mounting member and an outer cylinder portion that is provided on the inner peripheral side of the seating portion and is inserted into the hole portion. Therefore, it is possible to reduce the spring constant of one of the divided bodies by providing a slit between the seating portion and the outer cylinder portion, and when providing the slit in this way, the size and shape of the slit are changed. Thus, the spring constant of one of the divided bodies can be adjusted. Similarly, the other divided body is integrally formed with a seating portion that is seated on the other surface in the plate thickness direction of the mounting member, and an inner cylindrical portion that is provided on the inner peripheral side of the seating portion and that is inserted on the inner peripheral side of the outer cylindrical portion. Therefore, it is possible to reduce the spring constant of the other divided body by providing a slit between the seating portion and the inner cylinder portion. The spring constant of the other divided body can be adjusted by changing the shape. Therefore, it is possible to adjust the spring constant of the entire grommet.

一方および他方の分割体は、これらを互いに同種のゴム材料によって成形しても良いが、互いに異なる種類のゴム材料によって成形しても良い。また一方および他方の分割体は、ゴム硬度を互いに同一に設定しても良いが、ゴム硬度を互いに異なるように設定しても良く、これらによればゴム材料またはゴム硬度についての組み合わせが多様化されるため、製品仕様を多様化することが可能とされる。   The one and the other divided bodies may be molded from the same type of rubber material, but may be molded from different types of rubber materials. In addition, the one and the other divided bodies may have the same rubber hardness, but the rubber hardness may be different from each other. According to these, combinations of rubber materials or rubber hardness are diversified. Therefore, it is possible to diversify product specifications.

本発明は、以下の効果を奏する。   The present invention has the following effects.

すなわち、本発明においては上記したように、グロメットが、軸方向に２分割されることにより取付部材の穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備えているため、これら分割体はいずれも、取付部材に取り付ける際に大きく弾性変形する必要のない形状とすることが可能とされている。また、これら分割体は穴部への挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えているため、取付部材から外れにくい。したがってグロメットを取付部材に取り付ける際にグロメットを大きく弾性変形させる必要がないため、グロメットに亀裂などが発生するのを防止することができ、併せて取付作業を容易化することができる。また、これら分割体は取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで抜け止め用係合部が係合するため、このスライドする範囲で取付部材の板厚寸法の変更に対応することが可能とされている。したがって取付部材の板厚寸法が変更されてもグロメットを装着することができ、よってグロメットに汎用性を持たせることができる。   That is, as described above, in the present invention, the grommet is divided into two parts in the axial direction, so that one divided body inserted from one side in the axial direction into the hole portion of the mounting member, and inserted from the other side in the axial direction. Since the other divided body is provided, any of these divided bodies can be formed into a shape that does not need to be greatly elastically deformed when attached to the attachment member. In addition, since these divided bodies are provided with a retaining engagement portion that engages with each other to prevent the separation after being inserted into the hole portion, it is difficult to be detached from the mounting member. Accordingly, since it is not necessary to elastically deform the grommet when the grommet is attached to the attachment member, it is possible to prevent the grommet from being cracked and to facilitate the attachment work. In addition, these divided bodies are slidable in the axial direction so that they can be mounted even if the plate thickness of the mounting member is changed, and the engaging portions for retaining are engaged. It is possible to cope with a change in the plate thickness dimension of the member. Therefore, the grommet can be mounted even if the plate thickness dimension of the mounting member is changed, so that the grommet can have versatility.

また、分割体にスリットを設けてこのスリットの大きさまたは形状によりグロメットのバネ定数を調整する場合には、グロメットの外観形状やゴム材料、ゴム硬度などを変更しなくてもグロメットのバネ定数を変更することができ、よって製品仕様を多様化することができる。   In addition, when a slit is provided in the divided body and the spring constant of the grommet is adjusted according to the size or shape of the slit, the spring constant of the grommet can be adjusted without changing the external shape of the grommet, rubber material, rubber hardness, etc. The product specifications can be diversified.

また、一方および他方の分割体を互いに異なる種類のゴム材料によって成形したり、ゴム硬度を互いに異なるように設定したりする場合には、これらの組み合わせ如何によっても製品仕様を多様化することができる。   In addition, when one and the other divided body are molded from different types of rubber materials or the rubber hardness is set to be different from each other, the product specifications can be diversified depending on the combination of these. .

本発明の実施例に係るグロメットを取付部材に取り付ける前の状態を示す断面図Sectional drawing which shows the state before attaching the grommet which concerns on the Example of this invention to an attachment member. 同グロメットを取付部材に取り付けた後の状態を示す断面図Sectional drawing which shows the state after attaching the grommet to an attachment member 同グロメットを板厚寸法を異にする取付部材に取り付けた後の状態を示す断面図Sectional drawing which shows the state after attaching the grommet to the attachment member from which board thickness dimension differs 従来例に係るグロメットの取付状態を示す断面図Sectional drawing which shows the attachment state of the grommet which concerns on a prior art example

本発明には、以下の実施形態が含まれる。
（１）本発明では、グロメットを２分割することで組み付け性を向上し、組み付けによる変形、亀裂を防止する。
（２）また、２分割タイプにすることで違うゴム材料・ゴム硬度を組み合わせることができ、それぞれ取り付ける場所により要求仕様（耐熱性、耐油性、支持荷重等）が異なる場合でも違うゴム材料・ゴム硬度を組み合わせることで対応することが可能となる。
（３）グロメットを２分割することで上下にスライドすることができ、板厚の変動を吸収することができる。
（４）従来のグロメットでは一体成形にて作成しているため溝部にスリットを設けることが困難であったが、グロメットを２分割することでスリットを容易に設けることができ、スリット形状によりバネ定数を調節することができる。 The present invention includes the following embodiments.
(1) In the present invention, the grommet is divided into two parts to improve the assembling property, and deformation and cracking due to the assembling are prevented.
(2) Different rubber materials and rubber hardness can be combined by using the two-part type, even if the required specifications (heat resistance, oil resistance, support load, etc.) differ depending on the installation location. It becomes possible to cope by combining the hardness.
(3) The grommet can be slid up and down by dividing the grommet into two parts, and variations in the plate thickness can be absorbed.
(4) In the conventional grommet, it was difficult to provide a slit in the groove because it was formed by integral molding. However, the slit can be easily provided by dividing the grommet into two parts, and the spring constant depends on the slit shape. Can be adjusted.

つぎに本発明の実施例を図面にしたがって説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

図１〜図３は、本発明の実施例に係るグロメット１１を示している。当該実施例に係るグロメット１１は、ゴム状弾性体よりなり、筒状を呈し、その外周面に一方の取付部材６１の穴部６２の周縁部６３を嵌め込むための環状の溝部（凹嵌部とも称する）１３（図２または図３参照）を設けた防振用のグロメットであって、軸方向（図では上下方向）に２分割されることにより取付部材６１の穴部６２に対し軸方向一方（図では上方）から挿入される一方の分割体２１と、軸方向他方（図では下方）から挿入される他方の分割体３１とを備え、これら一方および他方の分割体２１，３１に、挿入後、互いに係合して穴部６２からの抜け止めをなすための抜け止め用係合部４１が設けられている。この抜け止め用係合部４１は、取付部材６１の板厚寸法が変更されても装着できるように一方および他方の分割体２１，３１が互いに軸方向にスライド可能とされたうえで係合するように構成されているが、この点ついては後述する。   1 to 3 show a grommet 11 according to an embodiment of the present invention. The grommet 11 according to the embodiment is made of a rubber-like elastic body, has a cylindrical shape, and has an annular groove portion (concave fitting portion) for fitting the peripheral edge portion 63 of the hole portion 62 of one mounting member 61 into the outer peripheral surface thereof. (Also referred to as FIG. 2 or FIG. 3), which is an anti-vibration grommet that is divided into two in the axial direction (vertical direction in the figure) and axially relative to the hole 62 of the mounting member 61 One split body 21 inserted from one side (upper in the figure) and the other split body 31 inserted from the other axial direction (downward in the figure), After the insertion, there is provided a retaining engagement portion 41 for engaging each other to prevent the hole 62 from coming off. The retaining portion 41 for retaining is engaged after the one and the other divided bodies 21 and 31 are slidable in the axial direction so that they can be mounted even if the thickness of the mounting member 61 is changed. This point will be described later.

一方の取付部材６１は、プレート状の部材であって例えば自動車等車両における吸気管系のブラケットであり、この一方の取付部材６１に設けた穴部６２の周縁部６３を溝部１３に嵌め込むことにより当該グロメット１１が一方の取付部材６１に取り付けられる。またグロメット１１は、その中心軸穴１２にボルト（図示せず）を差し込んでナット（図示せず）に締結することにより他方の取付部材（図示せず）に取り付けられる。グロメット１１およびボルト間にはボルト締めを定寸止めするため、金属等剛材製のブッシュ（図示せず）が介装されることが多い。他方の取付部材は例えば自動車等車両における車両ボディである。したがって当該グロメット１１はこの両取付部材を防振のうえ連結する機能を発揮する。   One mounting member 61 is a plate-like member, for example, an intake pipe bracket in a vehicle such as an automobile, and the peripheral portion 63 of the hole 62 provided in the one mounting member 61 is fitted into the groove portion 13. Thus, the grommet 11 is attached to one attachment member 61. The grommet 11 is attached to the other attachment member (not shown) by inserting a bolt (not shown) into the central shaft hole 12 and fastening it to a nut (not shown). A bush (not shown) made of a rigid material such as metal is often interposed between the grommet 11 and the bolt in order to fix the bolt tightening to a fixed size. The other mounting member is, for example, a vehicle body in a vehicle such as an automobile. Therefore, the grommet 11 exhibits a function of connecting both the mounting members after vibration isolation.

一方の分割体２１は、以下のように構成されている。   One divided body 21 is configured as follows.

すなわち一方の分割体２１は、断面略四角形状を呈する環状の基部２２を有しており、この基部２２における取付部材６１に面する端面（図では下面）に、取付部材６１の板厚方向一方の面（図では上面）に着座する環状の着座部２３が図上下向きに一体成形されるとともに、着座部２３の内周側に位置して、取付部材６１の穴部６２に差し込まれる外筒部２４が同じく図上下向きに一体成形されている。外筒部２４の先端部（図では下端部）内周面に環状の第１係合突起２５が径方向内方へ向けて設けられ、基部２２の内周面に環状の第２係合突起２６が径方向内方へ向けて設けられている。また、着座部２３および外筒部２４の間に位置して環状のスリット２７が図上下向きに開口するように設けられている。   That is, one of the divided bodies 21 has an annular base 22 having a substantially square cross section, and one end of the mounting member 61 in the plate thickness direction on the end surface (the lower surface in the figure) facing the mounting member 61. An annular seat portion 23 seated on the surface (upper surface in the figure) is integrally formed vertically in the figure, and is located on the inner peripheral side of the seat portion 23 and is inserted into the hole portion 62 of the mounting member 61 The part 24 is also integrally formed in the vertical direction in the figure. An annular first engaging protrusion 25 is provided radially inward on the inner peripheral surface of the distal end portion (lower end portion in the figure) of the outer cylinder portion 24, and the annular second engaging protrusion is formed on the inner peripheral surface of the base portion 22. 26 is provided inward in the radial direction. In addition, an annular slit 27 is provided between the seat portion 23 and the outer cylinder portion 24 so as to open in the vertical direction in the figure.

他方の分割体３１は、以下のように構成されている。   The other divided body 31 is configured as follows.

すなわち他方の分割体３１は、断面略四角形状を呈する環状の基部３２を有しており、この基部３２における取付部材６１に面する端面（図では上面）に、取付部材６１の板厚方向他方の面（図では下面）に着座する環状の着座部３３が図上上向きに一体成形されるとともに、着座部３３の内周側に位置して、一方の分割体２１の外筒部２４の内周側に差し込まれる内筒部３４が同じく図上上向きに一体成形されている。内筒部３４の外周面に環状の第３係合突起３５が径方向外方へ向けて設けられている。また、着座部３３および内筒部３４の間に位置して環状のスリット３７が図上上向きに開口するように設けられている。   In other words, the other divided body 31 has an annular base portion 32 having a substantially square cross section, and the other end surface (upper surface in the drawing) of the base portion 32 facing the mounting member 61 is connected to the other side in the plate thickness direction of the mounting member 61. An annular seat portion 33 seated on the surface (the lower surface in the figure) is integrally formed upward in the figure, and is positioned on the inner peripheral side of the seat portion 33 so as to be within the outer cylinder portion 24 of one divided body 21. Similarly, the inner cylinder part 34 inserted into the peripheral side is integrally formed upward in the figure. An annular third engagement protrusion 35 is provided on the outer peripheral surface of the inner cylinder portion 34 so as to be directed radially outward. Further, an annular slit 37 is provided between the seating portion 33 and the inner cylinder portion 34 so as to open upward in the figure.

尚、グロメット１１の溝部１３は、スリット２７，３７が設けられていなければ一方および他方の分割体２１，３１が組み合わされた状態で一方の分割体２１の着座部２３および外筒部２４ならびに他方の分割体３１着座部３３によって３方を囲まれるよう形成されるが、スリット２７，３７が設けられているため、溝幅寸法が溝底部で拡大した形状とされている。   In addition, the groove part 13 of the grommet 11 has the seat part 23 and the outer cylinder part 24 of one division body 21, and the other in the state where one and the other division bodies 21 and 31 are combined unless the slits 27 and 37 are provided. However, since the slits 27 and 37 are provided, the groove width dimension is enlarged at the bottom of the groove.

上記構成を備える一方および他方の分割体２１，３１を取付部材６１に取り付けると、図２に示すように一方の分割体２１における外筒部２４が軸方向一方から穴部６２に差し込まれるとともに着座部２３が取付部材６１の板厚方向一方の面に着座し、他方の分割体３１における内筒部３４が軸方向他方から一方の分割体２１における外筒部２４の内周側に差し込まれるとともに着座部３３が取付部材６１の板厚方向他方の面に着座し、このとき一方の分割体２１における第１係合突起２５および他方の分割体３１における第３係合突起３５はその一方が他方を乗り越えて（このとき若干弾性変形する）、第１係合突起２５が第３係合突起３５の軸方向他方の側に位置するとともに第３係合突起３５が第１係合突起２５の軸方向一方の側に位置することになる。   When the one and the other divided bodies 21 and 31 having the above-described configuration are attached to the attachment member 61, the outer cylinder portion 24 of the one divided body 21 is inserted into the hole 62 from one axial direction as shown in FIG. The portion 23 is seated on one surface in the plate thickness direction of the mounting member 61, and the inner cylindrical portion 34 in the other divided body 31 is inserted from the other axial direction to the inner peripheral side of the outer cylindrical portion 24 in the one divided body 21. The seat portion 33 is seated on the other surface in the plate thickness direction of the mounting member 61. At this time, one of the first engagement protrusions 25 in the one divided body 21 and the third engagement protrusion 35 in the other divided body 31 is the other. The first engagement protrusion 25 is positioned on the other side in the axial direction of the third engagement protrusion 35 and the third engagement protrusion 35 is the axis of the first engagement protrusion 25. Direction on one side It will be.

したがって一方の分割体２１が取付部材６１から外れる方向すなわち軸方向一方へ向けて移動しようとしても第１係合突起２５が第３係合突起３５に係合するため、一方の分割体２１は取付部材６１から外れず抜け止めされ、同様に他方の分割体３１が取付部材６１から外れる方向すなわち軸方向他方へ向けて移動しようとしても第３係合突起３５が第１係合突起２５に係合するため、他方の分割体３１は取付部材６１から外れず抜け止めされることになる。   Therefore, even if one of the divided bodies 21 is moved away from the mounting member 61, that is, in the axial direction, the first engaging protrusion 25 is engaged with the third engaging protrusion 35, so that the one divided body 21 is mounted. Similarly, the third engagement protrusion 35 is engaged with the first engagement protrusion 25 even if the other divided body 31 attempts to move away from the mounting member 61, that is, in the axial direction. Therefore, the other divided body 31 is prevented from coming off without being detached from the attachment member 61.

また、このとき図２に示したように、一方の分割体２１における着座部２３が取付部材６１の板厚方向一方の面に着座するとともに他方の分割体３１における着座部３３が取付部材６１の板厚方向他方の面に着座した状態において、第１係合突起２５および第３係合突起２５間に所定の大きさに亙って軸方向の遊び隙間ｃが設定されるように構成されている。したがってこのように遊び隙間ｃが設定された状態から図３に示す両係合突起２５，３５が係合した状態（遊び隙間ｃが消失した状態）となるまでの間で一方および他方の分割体２１，３１は軸方向にスライド可能とされ、すなわち上記抜け止め用係合部４１が、一方および他方の分割体２１，３１が互いに軸方向にスライド可能とされたうえで係合するように構成されているため、このスライドする範囲で取付部材６１の板厚寸法の変更に対応することが可能とされている。   At this time, as shown in FIG. 2, the seating portion 23 of one divided body 21 is seated on one surface in the plate thickness direction of the mounting member 61 and the seating portion 33 of the other divided body 31 is seated on the mounting member 61. In the state of being seated on the other surface in the plate thickness direction, an axial play gap c is set between the first engagement protrusion 25 and the third engagement protrusion 25 over a predetermined size. Yes. Therefore, one and the other divided body from the state in which the play gap c is set in this way to the state in which both the engaging projections 25 and 35 shown in FIG. 3 are engaged (the state in which the play gap c has disappeared) is reached. 21 and 31 are slidable in the axial direction, that is, the above-described retaining portion 41 is configured so that one and the other divided bodies 21 and 31 are engaged with each other after being slidable in the axial direction. Therefore, it is possible to cope with a change in the plate thickness dimension of the mounting member 61 within the sliding range.

図２に示すように一方および他方の分割体２１，３１が互いに近付く方向にスライドするスライド端限は、一方の分割体２１における第２係合突起２６および他方の分割体３１における第３係合突起３５が係合すること、および／または一方の分割体２１における外筒部２４の先端および他方の分割体３１における基部３２が当接することによって定められる。これに対し、図３に示すように一方および他方の分割体２１，３１が互いに離れる方向にスライドするスライド端限は上記したように、第１係合突起２５および第３係合突起３５が係合することによって定められる。したがって一方および他方の分割体２１，３１はこのように図２から図３へかけての範囲でスライドすることが可能とされ、換言すると、図２に示す最小板厚寸法ｔ１から図３に示す最大板厚寸法ｔ２の範囲で取付部材６１の板厚寸法の変更に対応することが可能とされている。 As shown in FIG. 2, the slide end where the one and the other divided bodies 21 and 31 slide in the direction approaching each other is the second engagement protrusion 26 in the one divided body 21 and the third engagement in the other divided body 31. It is determined by the engagement of the protrusion 35 and / or the contact of the distal end of the outer cylinder portion 24 in one divided body 21 and the base portion 32 in the other divided body 31. On the other hand, as shown in FIG. 3, the slide end where the one and the other divided bodies 21 and 31 slide in the direction away from each other is related to the first engagement protrusion 25 and the third engagement protrusion 35 as described above. It is determined by combining. Accordingly, the one and the other divided bodies 21 and 31 can be slid in the range from FIG. 2 to FIG. 3 in this way, in other words, from the minimum thickness t 1 shown in FIG. 2 to FIG. It is possible to cope with a change in the plate thickness dimension of the mounting member 61 within the range of the maximum plate thickness dimension t 2 shown.

上記構成を備えるグロメット１１においては、軸方向に２分割されることにより一方の取付部材６１の穴部６２に対し軸方向一方から挿入される一方の分割体２１と、軸方向他方から挿入される他方の分割体３１とが備えられ、これら分割体２１，３１がいずれも、取付部材６１に取り付ける際に大きく弾性変形する必要のない形状とされている。また、これら分割体２１，３１は穴部６２への挿入後、互いに係合して抜け止めをなすための抜け止め用係合部４１を備えているため、取付部材６１から外れることがない。したがってグロメット１１を取付部材６１に取り付ける際にグロメット１１を大きく弾性変形させる必要がないため、グロメット１１に亀裂などが発生するのを防止することができ、併せて取付作業、更には取外し作業を容易化することができる。   In the grommet 11 having the above-described configuration, one divided body 21 inserted from one axial direction into the hole 62 of one mounting member 61 by being divided into two in the axial direction, and inserted from the other axial direction. The other divided body 31 is provided, and each of the divided bodies 21 and 31 has a shape that does not need to be greatly elastically deformed when being attached to the attachment member 61. Further, since the divided bodies 21 and 31 are provided with the retaining engagement portions 41 that are engaged with each other to prevent the separation after being inserted into the hole portion 62, they are not detached from the attachment member 61. Accordingly, when attaching the grommet 11 to the attachment member 61, it is not necessary to greatly deform the grommet 11, so that it is possible to prevent the grommet 11 from being cracked, and attachment work and further removal work are easy. Can be

また、これら分割体２１，３１は取付部材６１の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで抜け止め用係合部４１が係合するため、この両分割体２１，３１がスライドする範囲で取付部材６１の板厚寸法の変更に対応することが可能とされている。したがって取付部材６１の板厚寸法が変更されてもグロメット１１を装着することができ、よってグロメット１１に汎用性を持たせることができる。   Further, since these divided bodies 21 and 31 are made slidable in the axial direction so that they can be mounted even if the plate thickness dimension of the mounting member 61 is changed, the retaining member 41 for retaining is engaged. It is possible to cope with a change in the plate thickness dimension of the attachment member 61 within a range in which both the divided bodies 21 and 31 slide. Therefore, the grommet 11 can be mounted even if the plate thickness dimension of the mounting member 61 is changed, so that the grommet 11 can be versatile.

また、分割体２１，３１にスリット２７，３７が設けられてこのスリット２７，３７の大きさまたは形状によりグロメット１１のバネ定数を調整可能とされているため、グロメット１１の外観形状やゴム材料、ゴム硬度などを変更しなくてもグロメット１１のバネ定数を設計段階で変更することができる。したがってグロメット１１の外観形状が同じであってもバネ定数が異なる製品を提供することができ、よって製品仕様を多様化することができる。   Further, since the split bodies 21 and 31 are provided with slits 27 and 37 and the spring constant of the grommet 11 can be adjusted by the size or shape of the slits 27 and 37, the outer shape of the grommet 11, the rubber material, The spring constant of the grommet 11 can be changed at the design stage without changing the rubber hardness or the like. Accordingly, products having different spring constants can be provided even if the grommet 11 has the same external shape, and thus product specifications can be diversified.

尚、上記一方および他方の分割体２１，３１は、互いに同種のゴム材料によって成形されるが、互いに異なる種類のゴム材料によって成形されるものであっても良い。また一方および他方の分割体２１，３１は、ゴム硬度を互いに同一に設定されるが、ゴム硬度を互いに異なるように設定されるものであっても良い。そして、これらによればゴム材料またはゴム硬度についての組み合わせが多様化されるため、これらの組み合わせ如何によってもグロメット１１の製品仕様を多様化することができる。   The one and the other divided bodies 21 and 31 are formed of the same kind of rubber material, but may be formed of different kinds of rubber materials. The one and the other divided bodies 21 and 31 are set to have the same rubber hardness, but may be set to have different rubber hardness. According to these, combinations of rubber materials or rubber hardness are diversified, so that the product specifications of the grommet 11 can be diversified depending on any of these combinations.

１１ グロメット
１２ 中心軸穴
１３ 溝部
２１ 一方の分割体
２２，３２ 基部
２３，３３ 着座部
２４ 外筒部
２５，２６，３５ 係合突起
２７，３７ スリット
３１ 他方の分割体
３４ 内筒部
４１ 抜け止め用係合部
６１ 取付部材
６２ 穴部
６３ 周縁部
ｃ 遊び隙間 DESCRIPTION OF SYMBOLS 11 Grommet 12 Center shaft hole 13 Groove part 21 One division body 22,32 Base part 23,33 Seating part 24 Outer cylinder part 25,26,35 Engagement protrusion 27,37 Slit 31 Other division body 34 Inner cylinder part 41 Retaining prevention Engaging portion 61 mounting member 62 hole 63 peripheral edge c play gap

Claims (5)

ゴム状弾性体よりなり、筒状を呈し、外周面に取付部材の穴部の周縁部を嵌め込む溝部を設けた防振用のグロメットにおいて、
当該グロメットは、軸方向に２分割されることにより前記穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備え、
前記一方および他方の分割体は、前記挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えるとともに、前記取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで前記抜け止め用係合部が係合し、
前記一方の分割体は、前記取付部材の板厚方向一方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記穴部に差し込まれる外筒部とを一体に備え、
前記他方の分割体は、前記取付部材の板厚方向他方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記外筒部の内周側に差し込まれる内筒部とを一体に備え、
前記抜け止め用係合部は、前記外筒部の内周面に設けられた係合突起と、前記内筒部の外周面に設けられた係合突起との組み合わせよりなり、
前記両係合突起間に遊び隙間が設定された状態から前記両係合突起が係合した状態となるまでの間で前記両分割体が軸方向にスライド可能とされていることを特徴とするグロメット。 In the grommet for vibration isolation, which is made of a rubber-like elastic body, has a cylindrical shape, and is provided with a groove portion into which the peripheral edge portion of the hole portion of the mounting member is fitted on the outer peripheral surface.
The grommet is provided with one divided body inserted from one axial direction into the hole by being divided into two in the axial direction, and the other divided body inserted from the other axial direction,
The one and the other divided bodies are provided with an engaging portion for retaining to be engaged with each other after the insertion to prevent the retaining member from being attached to each other, and the shafts can be attached to each other so that they can be mounted even if the thickness of the mounting member is changed. stop engaging portion missing the after having been allowed to slide in the direction to engage,
The one divided body is integrally provided with a seating portion seated on one surface in the plate thickness direction of the mounting member, and an outer cylinder portion provided on the inner peripheral side of the seating portion and inserted into the hole portion,
The other divided body is a seat portion that is seated on the other surface in the plate thickness direction of the mounting member, and an inner cylinder portion that is provided on the inner peripheral side of the seat portion and inserted into the inner peripheral side of the outer cylinder portion. With
The retaining portion for retaining is composed of a combination of an engagement protrusion provided on the inner peripheral surface of the outer cylinder portion and an engagement protrusion provided on the outer peripheral surface of the inner cylinder portion,
The two divided bodies are slidable in the axial direction from a state in which a play gap is set between the both engaging protrusions to a state in which the both engaging protrusions are engaged. Grommet. ゴム状弾性体よりなり、筒状を呈し、外周面に取付部材の穴部の周縁部を嵌め込む溝部を設けた防振用のグロメットにおいて、
当該グロメットは、軸方向に２分割されることにより前記穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備え、
前記一方および他方の分割体は、前記挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えるとともに、前記取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで前記抜け止め用係合部が係合し、
前記一方の分割体は、前記着座部および外筒部間にスリットを備え、および／または前記他方の分割体は、前記着座部および内筒部間にスリットを備え、当該グロメットは、前記スリットの大きさまたは形状により当該グロメットのバネ定数を調整可能とされていることを特徴とするグロメット。 In the grommet for vibration isolation, which is made of a rubber-like elastic body, has a cylindrical shape, and is provided with a groove portion into which the peripheral edge portion of the hole portion of the mounting member is fitted on the outer peripheral surface.
The grommet is provided with one divided body inserted from one axial direction into the hole by being divided into two in the axial direction, and the other divided body inserted from the other axial direction,
The one and the other divided bodies are provided with an engaging portion for retaining to be engaged with each other after the insertion to prevent the retaining member from being attached to each other, and the shafts can be attached to each other so that they can be mounted even if the thickness of the mounting member is changed. The detachable engagement portion is engaged after being slidable in the direction,
The one divided body is provided with a slit between the seating portion and the outer cylinder portion, and / or the other divided body is provided with a slit between the seating portion and the inner cylinder portion, and the grommet is formed of the slit. A grommet characterized in that the spring constant of the grommet can be adjusted by size or shape . ゴム状弾性体よりなり、筒状を呈し、外周面に取付部材の穴部の周縁部を嵌め込む溝部を設けた防振用のグロメットにおいて、
当該グロメットは、軸方向に２分割されることにより前記穴部に対し軸方向一方から挿入される一方の分割体と、軸方向他方から挿入される他方の分割体とを備え、
前記一方および他方の分割体は、前記挿入後、互いに係合して抜け止めをなす抜け止め用係合部を備えるとともに、前記取付部材の板厚寸法が変更されても装着できるように互いに軸方向にスライド可能とされたうえで前記抜け止め用係合部が係合し、
前記一方の分割体は、前記取付部材の板厚方向一方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記穴部に差し込まれる外筒部とを一体に備え、
前記他方の分割体は、前記取付部材の板厚方向他方の面に着座する着座部と、前記着座部の内周側に設けられるとともに前記外筒部の内周側に差し込まれる内筒部とを一体に備え、
前記抜け止め用係合部は、前記外筒部の内周面に設けられた係合突起と、前記内筒部の外周面に設けられた係合突起との組み合わせよりなり、
前記両係合突起間に遊び隙間が設定された状態から前記両係合突起が係合した状態となるまでの間で前記両分割体が軸方向にスライド可能とされ、
前記一方の分割体は、前記着座部および外筒部間にスリットを備え、および／または前記他方の分割体は、前記着座部および内筒部間にスリットを備え、当該グロメットは、前記スリットの大きさまたは形状により当該グロメットのバネ定数を調整可能とされていることを特徴とするグロメット。 In the grommet for vibration isolation, which is made of a rubber-like elastic body, has a cylindrical shape, and is provided with a groove portion into which the peripheral edge portion of the hole portion of the mounting member is fitted on the outer peripheral surface.
The grommet is provided with one divided body inserted from one axial direction into the hole by being divided into two in the axial direction, and the other divided body inserted from the other axial direction,
The one and the other divided bodies are provided with an engaging portion for retaining to be engaged with each other after the insertion to prevent the retaining member from being attached to each other, and the shafts can be attached to each other so that they can be mounted even if the thickness of the mounting member is changed. The detachable engagement portion is engaged after being slidable in the direction,
The one divided body is integrally provided with a seating portion seated on one surface in the plate thickness direction of the mounting member, and an outer cylinder portion provided on the inner peripheral side of the seating portion and inserted into the hole portion,
The other divided body is a seat portion that is seated on the other surface in the plate thickness direction of the mounting member, and an inner cylinder portion that is provided on the inner peripheral side of the seat portion and inserted into the inner peripheral side of the outer cylinder portion. With
The retaining portion for retaining is composed of a combination of an engagement protrusion provided on the inner peripheral surface of the outer cylinder portion and an engagement protrusion provided on the outer peripheral surface of the inner cylinder portion,
Between the state in which a play gap is set between the both engaging projections and the state in which the both engaging projections are engaged, the two split bodies are slidable in the axial direction.
The one divided body is provided with a slit between the seating portion and the outer cylinder portion, and / or the other divided body is provided with a slit between the seating portion and the inner cylinder portion, and the grommet is formed of the slit. A grommet characterized in that the spring constant of the grommet can be adjusted by size or shape . 請求項１、２または３記載のグロメットにおいて、
前記一方および他方の分割体は、互いに同種のゴム材料によって成形され、または互いに異なる種類のゴム材料によって成形されていることを特徴とするグロメット。 The grommet according to claim 1, 2, or 3,
The grommet characterized in that the one and the other divided bodies are formed of the same type of rubber material or different types of rubber materials. 請求項１、２、３または４記載のグロメットにおいて、
前記一方および他方の分割体は、ゴム硬度を互いに同一に設定され、またはゴム硬度を互いに異なるように設定されていることを特徴とするグロメット。 The grommet according to claim 1, 2, 3 or 4,
The grommet characterized in that the one and the other divided bodies have the same rubber hardness or different rubber hardness.
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