JP2012047231A - Vibration control device and its manufacturing method - Google Patents

Vibration control device and its manufacturing method Download PDF

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JP2012047231A
JP2012047231A JP2010188578A JP2010188578A JP2012047231A JP 2012047231 A JP2012047231 A JP 2012047231A JP 2010188578 A JP2010188578 A JP 2010188578A JP 2010188578 A JP2010188578 A JP 2010188578A JP 2012047231 A JP2012047231 A JP 2012047231A
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rubber
surface portion
vibration
inner cylinder
mold
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JP5593166B2 (en
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Toshifumi Sakata
利文 坂田
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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Priority to JP2010188578A priority Critical patent/JP5593166B2/en
Priority to PCT/JP2011/051961 priority patent/WO2011114784A1/en
Priority to US13/582,876 priority patent/US9010739B2/en
Priority to CN201180014584.2A priority patent/CN102822558B/en
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Abstract

PROBLEM TO BE SOLVED: To provide a vibration control device that can suppress the formation of burrs when, in particular, insert-molding a vibration isolation leg at a bracket member, and can secure a stopper function by the vibration isolation leg, and to provide a method of manufacturing the vibration control device, concerning the vibration control device and its manufacturing method.SOLUTION: A resin molding metal mold 400 can rigidly press both sides 402e, 53a since the second pressing face 402e presses the seal face 53a toward a mold-fastening direction. By this arrangement, resin materials injected into a cavity C are made to hardly enter between both sides 402e, 53a, and the formation of the burrs can be suppressed. Furthermore, even if the resin materials enter between both sides 402e, 53a, a stopper face is protruded from the seal face 53a by an amount of a step 53c, thereby a stroke (compression margin) of the stopper face can be secured, and the stopper function can be exhibited.

Description

本発明は、ゴム状弾性体からなる防振脚部を樹脂材料からなるブラケット部材にインサート成形する構造の防振装置および防振装置の製造方法に関し、特に、インサート成形時のバリの発生を抑制して、防振脚部によるストッパ機能を確保することができる防振装置および防振装置の製造方法に関するものである。   The present invention relates to an anti-vibration device having a structure in which an anti-vibration leg portion made of a rubber-like elastic body is insert-molded into a bracket member made of a resin material, and a method for manufacturing the anti-vibration device, and particularly suppresses the generation of burrs during insert molding. In addition, the present invention relates to a vibration isolator capable of ensuring a stopper function by the vibration isolator leg and a method for manufacturing the vibration isolator.

防振装置の一例として、例えば、車体側に取着されるブラケット部材に内挿孔を設け、その内挿孔に内挿配置される内筒部材を振動源(例えば、エンジンやモータ、トランスミッションなど)側に取着すると共に、内挿孔の内周側と内筒部材の外周側とをゴム状弾性体からなる防振脚部で連結する構造のものが知られている。   As an example of the vibration isolator, for example, an insertion hole is provided in a bracket member attached to the vehicle body side, and an inner cylinder member inserted in the insertion hole is used as a vibration source (for example, an engine, a motor, a transmission, etc. In addition, a structure is known in which the inner peripheral side of the insertion hole and the outer peripheral side of the inner cylinder member are connected by a vibration-proof leg portion made of a rubber-like elastic body.

近年では、軽量化や低コスト化を目的として、ブラケット部材を樹脂材料から構成することが試みられている。例えば、特許文献1には、ブラケット部材を樹脂材料から構成すると共に、そのブラケット部材に設けたマウント装着孔(内挿孔)の内周面に金属プレートを配設し、その金属プレートに本体ゴム弾性体(防振脚部)を接着することで、本体ゴム弾性体をマウント装着孔の内周面に固着する技術が開示されている。また、このように、金属プレートを接着によってブラケット部材に固定する技術に加え、機械的な係合構造により固着させる技術も開示されている。   In recent years, it has been attempted to construct the bracket member from a resin material for the purpose of reducing the weight and cost. For example, in Patent Document 1, a bracket member is made of a resin material, and a metal plate is disposed on an inner peripheral surface of a mount mounting hole (insertion hole) provided in the bracket member. A technique for fixing a main rubber elastic body to an inner peripheral surface of a mount mounting hole by bonding an elastic body (vibration-proof leg portion) is disclosed. In addition to the technique for fixing the metal plate to the bracket member by bonding as described above, a technique for fixing the metal plate by a mechanical engagement structure is also disclosed.

特開平9−170634号公報(図1〜図5、段落[0007]など)JP-A-9-170634 (FIGS. 1-5, paragraph [0007], etc.)

しかしながら、上述した従来の防振装置では、機械的な係合構造により金属プレートを固着させる場合、ブラケット部材の内挿孔の内周面の一部を防振脚部へ向けて張り出させる構造であり、その張り出し部分がアンダーカット形状となるため、ブラケット部材を成形するための樹脂成形金型の構造が複雑になる。   However, in the conventional vibration isolator described above, when the metal plate is fixed by a mechanical engagement structure, a structure in which a part of the inner peripheral surface of the insertion hole of the bracket member is projected toward the vibration isolating leg portion. And since the overhang | projection part becomes an undercut shape, the structure of the resin molding die for shape | molding a bracket member becomes complicated.

これに対し、本出願人は、鋭意検討した結果、防振脚部の他端側に外側部材を埋設させ、かかる外側部材と共に防振脚部の他端側をブラケット部材にインサート成形することで、防振脚部の他端側がブラケット部材から抜け出ることを抑制しつつ、樹脂成形金型の構造を簡素化できることを見いだした(本出願時において未公知)。   On the other hand, as a result of earnest examination, the present applicant embeds an outer member on the other end side of the anti-vibration leg portion, and insert-molds the other end side of the anti-vibration leg portion into the bracket member together with the outer member. The present inventors have found that the structure of the resin molding die can be simplified while suppressing the other end side of the vibration isolating leg from coming out of the bracket member (not known at the time of this application).

ここで、かかる防振装置および樹脂成形金型の構造について、図16及び図17を参照して説明する。図16は、防振装置200の斜視図である。   Here, the structure of the vibration isolator and the resin mold will be described with reference to FIGS. 16 and 17. FIG. 16 is a perspective view of the vibration isolator 200.

図16に示すように、防振装置200は、樹脂材料から構成されるブラケット部材230と、そのブラケット部材230に形成された内挿孔231に内挿配置される内筒部材240と、その内筒部材230に一端側が連結されると共にブラケット部材230の内挿孔231の内周側に他端側がインサート成形されゴム状弾性体から構成される一対の防振脚部250と、それら一対の防振脚部250の他端側に埋設される一対の外側部材260(図17参照)とを主に備える。防振脚部250の他端側には、外側部材260を覆う覆設ゴム部253が形成されている。この覆設ゴム部253は、ストッパ面として機能する部位であり、ブラケット部材230の外面から内筒部材240の軸方向へ向けて突出される。即ち、覆設ゴム部253に相手部品が当接されることで、その変位を規制する。   As shown in FIG. 16, the vibration isolator 200 includes a bracket member 230 made of a resin material, an inner cylinder member 240 inserted and disposed in an insertion hole 231 formed in the bracket member 230, A pair of anti-vibration legs 250, each of which is connected to the cylindrical member 230 and is made of a rubber-like elastic body, the other end being insert-molded on the inner peripheral side of the insertion hole 231 of the bracket member 230, and the pair of anti-vibration legs 250 It mainly includes a pair of outer members 260 (see FIG. 17) embedded in the other end side of the swing leg portion 250. A covering rubber portion 253 that covers the outer member 260 is formed on the other end side of the vibration isolation leg portion 250. The covering rubber portion 253 is a portion that functions as a stopper surface, and protrudes from the outer surface of the bracket member 230 toward the axial direction of the inner cylinder member 240. In other words, the displacement of the mating part is restricted when the mating part is brought into contact with the covering rubber part 253.

図17は、型締めされた樹脂成形金型2400の断面図であり、図16のXVII−XVII線における段面図に対応する。防振装置200の製造は、内筒部材240及び防振脚部250が設置された樹脂成形金型2400を、内筒部材240の軸方向(図17上下方向)に型締めした後、キャビティC内へ樹脂材料を注入して固化させ、防振脚部250をブラケット部材230にインサート成形することで行われる。樹脂成形金型2400は、覆設ゴム部253のストッパ面(図17上側面)に連なる縦壁253aに当接面部2400aが当接することで、樹脂材料が注入されるキャビティCと覆設ゴム部253のストッパ面が収納される空間Sとを区画する。   FIG. 17 is a cross-sectional view of the resin-molding mold 2400 that has been clamped, and corresponds to a step view taken along line XVII-XVII in FIG. The vibration isolator 200 is manufactured by clamping the resin molding die 2400 provided with the inner cylinder member 240 and the vibration isolation legs 250 in the axial direction of the inner cylinder member 240 (the vertical direction in FIG. 17), and then the cavity C This is performed by injecting a resin material into the inside and solidifying it, and insert-molding the vibration-proof leg portion 250 into the bracket member 230. The resin molding die 2400 includes a cavity C into which a resin material is injected and an overlaid rubber portion by the abutment surface portion 2400a coming into contact with a vertical wall 253a connected to the stopper surface (upper side surface in FIG. 17) of the overlaid rubber portion 253. A space S in which 253 stopper surfaces are stored is partitioned.

この場合、樹脂成形金型2400の当接面部2400aと覆設ゴム部253の縦壁253aとの密着が弱いと、キャビティC内に注入された樹脂材料が、当接面部2400aと縦壁253aとの間に浸入してバリとなる。かかるバリは樹脂材料からなり硬いため、覆設ゴム部253のストッパ面としての機能を阻害する。そのため、ストッパ機能を確保するためには、バリの発生を抑制する必要があり、樹脂成形金型2400の当接面部2400a及び防振脚部253の縦壁253aに高い寸法精度が要求される。   In this case, if the close contact between the contact surface portion 2400a of the resin molding die 2400 and the vertical wall 253a of the covering rubber portion 253 is weak, the resin material injected into the cavity C is separated from the contact surface portion 2400a and the vertical wall 253a. It penetrates between and becomes burr. Since such burrs are made of a resin material and are hard, they hinder the function of the covering rubber portion 253 as a stopper surface. Therefore, in order to ensure the stopper function, it is necessary to suppress the occurrence of burrs, and high dimensional accuracy is required for the contact surface portion 2400a of the resin molding die 2400 and the vertical wall 253a of the vibration isolation leg portion 253.

本発明は、上述した事情に鑑みてなされたものであり、ゴム状弾性体からなる防振脚部を樹脂材料からなるブラケット部材にインサート成形する構造において、インサート成形時のバリの発生を抑制して、防振脚部によるストッパ機能を確保することができる防振装置および防振装置の製造方法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-described circumstances, and suppresses generation of burrs during insert molding in a structure in which a vibration-proof leg portion made of a rubber-like elastic body is insert-molded into a bracket member made of a resin material. An object of the present invention is to provide a vibration isolator and a method for manufacturing the vibration isolator capable of ensuring a stopper function by the anti-vibration legs.

課題を解決するための手段および発明の効果Means for Solving the Problems and Effects of the Invention

請求項1記載の防振装置によれば、ブラケット部材の外面から突出される突出ゴム部は、外縁側に位置する平坦面状のシール面部と、そのシール面部に段差を介して連設され段差の分だけシール面部よりも突出されるストッパ面部とを備え、樹脂成形金型の押圧面部が第1成形体の突出ゴム部におけるシール面部を押圧して、樹脂材料が注入されるキャビティと突出ゴム部のストッパ面部が収容される空間とを区画した状態で、ブラケット部材の内挿孔の内周側にインサート成形されたものであるので、防振装置の製造過程におけるバリの発生を抑制して、ストッパ機能を確保することができるという効果がある。   According to the vibration isolator of claim 1, the protruding rubber portion protruding from the outer surface of the bracket member is connected to the flat sealing surface portion located on the outer edge side and the sealing surface portion via the step. And a stopper surface portion that protrudes more than the seal surface portion, and the pressing surface portion of the resin molding die presses the sealing surface portion in the protruding rubber portion of the first molded body, and the cavity into which the resin material is injected and the protruding rubber Since it is insert-molded on the inner peripheral side of the insertion hole of the bracket member in a state of partitioning the space in which the stopper surface portion of the part is accommodated, the occurrence of burrs in the manufacturing process of the vibration isolator is suppressed. There is an effect that the stopper function can be secured.

即ち、突出ゴム部におけるシール面部が平坦面状に形成され、かかるシール面部を樹脂成形金型の押圧面部が押圧するので、これら押圧面部とシール面部とを強固に密着させることができる。よって、キャビティ内に注入された樹脂材料が押圧面部とシール面部との間に浸入することを抑制して、その分、インサート成形時のバリの発生が抑制されるという効果がある。   That is, the sealing surface portion of the protruding rubber portion is formed in a flat surface shape, and the pressing surface portion of the resin molding die is pressed against the sealing surface portion, so that the pressing surface portion and the sealing surface portion can be firmly adhered. Therefore, there is an effect that the resin material injected into the cavity is prevented from entering between the pressing surface portion and the sealing surface portion, and generation of burrs during insert molding is suppressed accordingly.

また、このように、押圧面部とシール面部との密着を強固とすることができれば、その分、樹脂成形金型の押圧面部と、突出ゴム部のシール面部との寸法精度を緩やかとすることができるので、防振装置を製造するための樹脂成型金型およびゴム加硫金型の製造コストを低減することができるという効果がある。   In addition, if the close contact between the pressing surface portion and the sealing surface portion can be strengthened in this way, the dimensional accuracy between the pressing surface portion of the resin molding die and the sealing surface portion of the protruding rubber portion can be moderated accordingly. Therefore, the manufacturing cost of the resin molding die and the rubber vulcanization die for manufacturing the vibration isolator can be reduced.

更に、突出ゴム部のストッパ面部は、シール面部に段差を介して連設され、その段差の分だけシール面部よりも突出されているので、キャビティ内に注入された樹脂材料が押圧面部とシール面部との間に浸入して、その浸入した樹脂材料がバリとなった場合であっても、ストッパ面部のストッパ面をバリから段差の分だけ離間させることができる。よって、仮に防振装置の製造過程においてバリが発生したとしても、ストッパ面部によるストッパ機能を確保することができるという効果がある。   Furthermore, since the stopper surface portion of the protruding rubber portion is connected to the seal surface portion through a step and protrudes from the seal surface portion by the amount corresponding to the step, the resin material injected into the cavity is pressed against the pressing surface portion and the seal surface portion. Even when the intruded resin material becomes a burr, the stopper surface of the stopper surface portion can be separated from the burr by a level difference. Therefore, even if a burr occurs in the manufacturing process of the vibration isolator, there is an effect that the stopper function by the stopper surface portion can be ensured.

請求項2記載の防振装置の製造方法によれば、ゴム加硫工程において、内筒部材および外側部材がゴム加硫金型のキャビティ内に設置された後、そのキャビティ内にゴム状弾性体が注入され加硫成形されることで、一対の防振脚部の一端側が内筒部材に加硫接着された第1成形体が成形される。次いで、樹脂成形工程において、ゴム加硫工程により成形された第1成形体が樹脂成形金型のキャビティ内に設置されると共に、そのキャビティ内に樹脂材料が注入され固化されることで、第1成形体がブラケット部材にインサート成形される。   According to the method for manufacturing a vibration isolator according to claim 2, in the rubber vulcanization step, after the inner cylinder member and the outer member are installed in the cavity of the rubber vulcanization mold, the rubber-like elastic body is placed in the cavity. Is injected and vulcanized to form a first molded body in which one end side of the pair of anti-vibration legs is vulcanized and bonded to the inner cylinder member. Next, in the resin molding step, the first molded body molded by the rubber vulcanization step is placed in the cavity of the resin molding die, and the resin material is injected into the cavity and solidified, whereby the first The molded body is insert-molded into the bracket member.

この場合、ゴム加硫工程により成形される第1成形体は、突出ゴム部が、外縁側に位置する平坦面状のシール面部と、そのシール面部に段差を介して連設され段差の分だけシール面部よりも突出されるストッパ面部とを備え、樹脂成形工程では、樹脂成形金型の押圧面部が第1成形体の突出ゴム部におけるシール面部を押圧することで、樹脂材料が注入されるキャビティと第1成形体の突出ゴム部におけるストッパ面部が収容される空間とを区画するので、バリの発生を抑制して、ストッパ機能を確保することができるという効果がある。   In this case, the first molded body molded by the rubber vulcanization process is such that the protruding rubber portion is connected to the flat seal surface portion located on the outer edge side, and the seal surface portion via the step, and the amount corresponding to the step. A cavity into which the resin material is injected by pressing the sealing surface part of the protruding rubber part of the first molded body with the pressing surface part of the resin molding die in the resin molding step. And the space in which the stopper surface portion in the protruding rubber portion of the first molded body is accommodated, there is an effect that the generation of burrs can be suppressed and the stopper function can be secured.

即ち、突出ゴム部におけるシール面部が平坦面状に形成され、かかるシール面部を樹脂成形金型の押圧面部が押圧するので、これら押圧面部とシール面部とを強固に密着させることができる。よって、キャビティ内に注入された樹脂材料が押圧面部とシール面部との間に浸入することを抑制して、その分、インサート成形時のバリの発生を抑制できるという効果がある。   That is, the sealing surface portion of the protruding rubber portion is formed in a flat surface shape, and the pressing surface portion of the resin molding die is pressed against the sealing surface portion, so that the pressing surface portion and the sealing surface portion can be firmly adhered. Therefore, the resin material injected into the cavity can be prevented from entering between the pressing surface portion and the seal surface portion, and the generation of burrs during insert molding can be suppressed accordingly.

また、このように、押圧面部とシール面部との密着を強固とすることができれば、その分、樹脂成形金型の押圧面部と、第1成形体の突出ゴム部におけるシール面部との寸法精度を緩やかとすることができるので、樹脂成型金型およびゴム加硫金型の製造コストを低減することができるという効果がある。   In addition, if the close contact between the pressing surface portion and the sealing surface portion can be strengthened in this way, the dimensional accuracy between the pressing surface portion of the resin molding die and the sealing surface portion of the protruding rubber portion of the first molded body is increased accordingly. Since it can be made loose, there is an effect that the manufacturing cost of the resin molding die and the rubber vulcanizing die can be reduced.

更に、突出ゴム部のストッパ面部は、シール面部に段差を介して連設され、その段差の分だけシール面部よりも突出されているので、キャビティ内に注入された樹脂材料が押圧面部とシール面部との間に浸入して、その浸入した樹脂材料がバリとなった場合であっても、ストッパ面部のストッパ面をバリから段差の分だけ離間させることができる。よって、仮にバリが発生したとしても、ストッパ面部のストローク(圧縮代)を確保して、そのストッパ機能を発揮させることができるという効果がある。   Furthermore, since the stopper surface portion of the protruding rubber portion is connected to the seal surface portion through a step and protrudes from the seal surface portion by the amount corresponding to the step, the resin material injected into the cavity is pressed against the pressing surface portion and the seal surface portion. Even when the intruded resin material becomes a burr, the stopper surface of the stopper surface portion can be separated from the burr by a level difference. Therefore, even if burrs are generated, there is an effect that the stroke (compression allowance) of the stopper surface portion can be secured and the stopper function can be exhibited.

請求項3記載の防振装置の製造方法によれば、請求項2記載の防振装置の製造方法の奏する効果に加え、ゴム加硫工程は、外側部材を内筒部材と共に設置したゴム加硫金型のキャビティ内にゴム状弾性体を注入して加硫成形して、一対の防振脚部の一端側を内筒部材の外周面に連結すると共に一対の防振脚部の他端側に外側部材を埋設した第1成形体を成形し、樹脂成形工程は、樹脂成形金型の押圧面部が、突出ゴム部のシール面部であって、外側部材の少なくとも一部に重なる領域を押圧するので、押圧面部により押圧されたシール面部をその背面側から金属材料から構成される外側部材に支持させることができる。これにより、押圧面部とシール面部との密着をより強固とすることができるので、キャビティ内に注入された樹脂材料が押圧面部とシール面部との間に浸入することを抑制でき、その分、インサート成形時のバリの発生をより確実に抑制できるという効果がある。   According to the method for manufacturing a vibration isolator according to claim 3, in addition to the effect of the method for manufacturing a vibration isolator according to claim 2, the rubber vulcanization step includes a rubber vulcanization in which the outer member is installed together with the inner cylinder member A rubber-like elastic body is injected into the mold cavity and vulcanized to connect one end side of the pair of vibration isolation legs to the outer peripheral surface of the inner cylinder member and the other end side of the pair of vibration isolation legs. The first molded body having the outer member embedded therein is molded, and in the resin molding step, the pressing surface portion of the resin molding die is the sealing surface portion of the protruding rubber portion and presses the region that overlaps at least a part of the outer member. Therefore, the sealing surface part pressed by the pressing surface part can be supported by the outer member comprised from a metal material from the back side. As a result, the adhesion between the pressing surface portion and the sealing surface portion can be further strengthened, so that the resin material injected into the cavity can be prevented from entering between the pressing surface portion and the sealing surface portion. There is an effect that the generation of burrs during molding can be more reliably suppressed.

また、請求項3によれば、ゴム加硫行程において、金属材料から構成される外側部材が防振脚部の他端側に埋設され、その防振脚部の他端側が樹脂成形行程においてブラケット部材にインサート成形されることで、外側部材の少なくとも一部がブラケット部材に係合されるので、防振脚部の他端側がブラケット部材から抜き出ることを抑制できる防振装置を製造することができるという効果がある。   According to the third aspect of the present invention, in the rubber vulcanization process, the outer member made of a metal material is embedded in the other end side of the vibration isolation leg part, and the other end side of the vibration isolation leg part is a bracket in the resin molding process. Since at least a part of the outer member is engaged with the bracket member by insert molding to the member, it is possible to manufacture a vibration isolator capable of suppressing the other end side of the vibration isolating leg portion from being extracted from the bracket member. There is an effect that can be done.

請求項4記載の防振装置の製造方法によれば、請求項2又は3に記載の防振装置の製造方法の奏する効果に加え、樹脂成形工程で使用される樹脂成形金型は、押圧面部に連なる縦壁と、第1成形体のシール面部およびストッパ面部の間の段差との間に所定の隙間を有するので、押圧面部によりシール面部が押圧されることで押し出されるゴム状弾性体の余肉を、縦壁と段差との間の隙間に逃がして吸収させることができる。このように、余肉を逃がすことで、押圧面部とシール面部とを、余肉により阻害されることなく、密着させることができるという効果がある。その結果、キャビティ内に注入された樹脂材料が押圧面部とシール面部との間に浸入することを抑制できるので、その分、インサート成形時のバリの発生をより確実に抑制できる。   According to the method for manufacturing a vibration isolator according to claim 4, in addition to the effect exhibited by the method for manufacturing a vibration isolator according to claim 2 or 3, the resin molding die used in the resin molding step is a pressing surface portion. Since there is a predetermined gap between the vertical wall connected to the step and the step between the seal surface portion and the stopper surface portion of the first molded body, the surplus of the rubber-like elastic body that is pushed out when the seal surface portion is pressed by the press surface portion Meat can be released and absorbed in the gap between the vertical wall and the step. Thus, by letting out the surplus, there is an effect that the pressing surface portion and the seal surface portion can be brought into close contact with each other without being obstructed by the surplus. As a result, since the resin material injected into the cavity can be prevented from entering between the pressing surface portion and the seal surface portion, the generation of burrs during insert molding can be more reliably suppressed.

本発明の第1実施の形態における防振装置の斜視図である。It is a perspective view of the vibration isolator in 1st Embodiment of this invention. (a)は、防振装置の正面図であり、(b)は、防振装置の側面図である。(A) is a front view of a vibration isolator, (b) is a side view of a vibration isolator. (a)は、外側部材の斜視図であり、(b)は、外側部材の背面図である。(A) is a perspective view of an outer member, (b) is a rear view of an outer member. (a)は、図3(b)のIVa−IVa線における外側部材の断面図であり、(b)は、図3(b)のIVb−IVb線における外側部材の断面図である。(A) is sectional drawing of the outer member in the IVa-IVa line | wire of FIG.3 (b), (b) is sectional drawing of the outer member in the IVb-IVb line | wire of FIG.3 (b). 第1成形体の斜視図である。It is a perspective view of a 1st molded object. (a)は、第1成形体の正面図であり、(b)は、第1成形体の側面図である。(A) is a front view of a 1st molded object, (b) is a side view of a 1st molded object. (a)は、図6(a)のVIIa−VIIa線における第1成形体の断面図であり、(b)は、図6(b)のVIIb−VIIb線における第1成形体の断面図である。(A) is sectional drawing of the 1st molded object in the VIIa-VIIa line | wire of Fig.6 (a), (b) is sectional drawing of the 1st molded object in the VIIb-VIIb line | wire of FIG.6 (b). is there. 図6(a)のVIII−VIII線における第1成形体の断面図である。It is sectional drawing of the 1st molded object in the VIII-VIII line of Fig.6 (a). 内筒部材および外側部材がセットされて型締めされたゴム加硫金型の断面図である。FIG. 3 is a cross-sectional view of a rubber vulcanization mold in which an inner cylinder member and an outer member are set and clamped. 第1成形体がセットされて型締めされた樹脂成形金型の断面図である。It is sectional drawing of the resin mold which the 1st molded object was set and clamped. 第1成形体がセットされて型締めされた樹脂成形金型の断面図である。It is sectional drawing of the resin mold which the 1st molded object was set and clamped. 第1成形体がセットされて型締めされた樹脂成形金型の断面図である。It is sectional drawing of the resin mold which the 1st molded object was set and clamped. 防振装置の部分断面図である。It is a fragmentary sectional view of a vibration isolator. 防振装置の部分断面図である。It is a fragmentary sectional view of a vibration isolator. (a)は、第2実施の形態における外側部材の断面図であり、(b)は、第3実施の形態における外側部材の断面図である。(A) is sectional drawing of the outer member in 2nd Embodiment, (b) is sectional drawing of the outer member in 3rd Embodiment. 従来の防振装置の斜視図である。It is a perspective view of the conventional vibration isolator. 型締めされた従来の樹脂成形金型の断面図である。It is sectional drawing of the conventional resin molding metal mold | die clamped.

以下、本発明の好ましい実施例について、添付図面を参照して説明する。まず、図1及び図2を参照して防振装置1の全体構成について説明する。図1は、本発明の第1実施の形態における防振装置1の斜視図であり、図2(a)は、防振装置1の正面図であり、図2(b)は、防振装置1の側面図である。なお、図1及び図2において、矢印F,B方向は車両前後方向を、矢印L,R方向は車両左右方向を、矢印U,D方向は車両上下方向を、それぞれ表している。   Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, the whole structure of the vibration isolator 1 is demonstrated with reference to FIG.1 and FIG.2. FIG. 1 is a perspective view of a vibration isolator 1 according to a first embodiment of the present invention, FIG. 2 (a) is a front view of the vibration isolator 1, and FIG. 2 (b) is a vibration isolator. 1 is a side view of FIG. 1 and 2, arrows F and B indicate the vehicle longitudinal direction, arrows L and R indicate the vehicle lateral direction, and arrows U and D indicate the vehicle vertical direction.

図1及び図2に示すように、防振装置1は、自動車の振動源(図示せず)を支持固定しつつ、その振動源から発生する振動を車体(図示せず)へ伝達させないようにするものであり、車体側に取り付けられる筒状の軸短取付金具11及び軸長取付金具12と、それら両取付金具11,12の外周面に加硫接着されると共にゴム状弾性体から構成される弾性体21,22と、それら両弾性体21,22がそれぞれ圧入される圧入孔を有すると共に樹脂材料から構成されるブラケット部材30と、そのブラケット部材30に形成された内挿孔31に内挿配置されると共に振動源側に取り付けられる内筒部材40と、その内筒部材40に一端側が連結されると共にゴム状弾性体から構成される一対の防振脚部50と、それら一対の防振脚部50の他端側がそれぞれ連結されると共にブラケット部材40に係合される一対の外側部材60(図7参照)と、を主に備えて構成される。   As shown in FIGS. 1 and 2, the vibration isolator 1 supports and fixes a vibration source (not shown) of an automobile so that vibration generated from the vibration source is not transmitted to a vehicle body (not shown). It is composed of a cylindrical short shaft mounting bracket 11 and a long shaft mounting bracket 12 attached to the vehicle body side, and vulcanized and bonded to the outer peripheral surfaces of both the mounting brackets 11 and 12 and a rubber-like elastic body. Elastic members 21, 22, a bracket member 30 having a press-fit hole into which both the elastic bodies 21, 22 are press-fitted and made of a resin material, and an insertion hole 31 formed in the bracket member 30. An inner cylinder member 40 that is inserted and arranged on the vibration source side, a pair of vibration isolation legs 50 that are connected to the inner cylinder member 40 at one end side and that are made of a rubber-like elastic body, and the pair of anti-vibration parts Other swing legs 50 Side is composed mainly comprises a pair of outer member 60 (see FIG. 7) which is engaged to the bracket member 40 while being connected, respectively, to.

なお、振動源は、本実施の形態では、モータであるが、他には、エンジンやトランスミッションなどが例示される。   In this embodiment, the vibration source is a motor, but other examples include an engine and a transmission.

軸短取付金具11及び軸長取付金具12は、鉄鋼材料から構成され、車体側に取り付けられる金具である。これら両取付金具11,12は、貫通孔を有する筒状に形成されており、この貫通孔には、ボルト(図示せず)が内挿され、そのボルトの締結により、両取付金具11,12の端面がそれぞれ車体側に取り付けられる。   The short shaft mounting bracket 11 and the long shaft mounting bracket 12 are made of a steel material and are mounted on the vehicle body side. Both the mounting brackets 11 and 12 are formed in a cylindrical shape having a through-hole, and a bolt (not shown) is inserted into the through-hole. Are attached to the vehicle body side.

ブラケット部材30は、樹脂材料から正面略矩形の枠状体として構成されており、圧入孔と内挿孔31とが厚み方向に貫通して形成されている。圧入孔には、外周面に弾性体21,22が加硫接着された各取付金具11,12が圧入されて保持される。内挿孔31には、内筒部材40が内挿される。なお、内挿孔31の内周面は、大変位入力時における内筒部材40を受け止めてその変位を規制するストッパ部としても機能する。   The bracket member 30 is made of a resin material as a substantially rectangular frame-like body, and has a press-fitting hole and an insertion hole 31 penetrating in the thickness direction. The fittings 11 and 12 having the elastic bodies 21 and 22 vulcanized and bonded to the outer peripheral surface are press-fitted and held in the press-fitting holes. The inner cylinder member 40 is inserted into the insertion hole 31. The inner peripheral surface of the insertion hole 31 also functions as a stopper portion that receives the inner cylinder member 40 when a large displacement is input and restricts the displacement.

ブラケット部材30の上端および下端には、複数の肉抜き穴32が厚み方向に貫通して形成されている。なお、圧入穴、内挿孔31および肉抜き孔32は、開口側へ向けて内径が拡大されるテーパ状の内周を有すると共に、内筒部材40及び後述する外側部材60の孔63aの軸心方向と平行に形成されている。よって、樹脂成形金型400(図10参照)からの脱型性が確保される。   At the upper end and the lower end of the bracket member 30, a plurality of lightening holes 32 are formed penetrating in the thickness direction. The press-fitting hole, the insertion hole 31 and the lightening hole 32 have a tapered inner periphery whose inner diameter is enlarged toward the opening side, and the shaft of the inner cylinder member 40 and a hole 63a of the outer member 60 described later. It is formed parallel to the direction of the heart. Therefore, the mold release property from the resin molding die 400 (see FIG. 10) is ensured.

内筒部材40は、アルミ合金から貫通孔を有する断面楕円形の筒状に形成される。内筒部材40は、貫通孔に挿通されたボルト(図示せず)を介して、振動源側に締結固定される。一対の防振脚部50は、ゴム状弾性体から構成され、振動源側で発生する振動が車体側へ伝達されることを抑制するための部材であり、一端側が内筒部材40の外周面に連結されると共に他端側がブラケット部材30における挿通孔31の内周面にそれぞれ連結される。   The inner cylinder member 40 is formed from an aluminum alloy into a cylindrical shape having an elliptical cross section having a through hole. The inner cylinder member 40 is fastened and fixed to the vibration source side via a bolt (not shown) inserted through the through hole. The pair of anti-vibration legs 50 are composed of rubber-like elastic bodies, and are members for suppressing the vibration generated on the vibration source side from being transmitted to the vehicle body side, and one end side is the outer peripheral surface of the inner cylinder member 40. Are connected to the inner peripheral surface of the insertion hole 31 in the bracket member 30.

これら一対の防振脚部50は、内挿孔31の車両前後方向となる内周面に連結されており、内挿孔31の上側および下側(車両上方側および下方側)との間には空間が形成される。そのため、防振脚部50は、内筒部材40を車両上下方向へ変位させる際の上下方向ばね定数が、内筒部材40を車両左右方向へ変位させる際の左右方向ばね定数よりも小さくされている。   The pair of anti-vibration legs 50 are connected to the inner circumferential surface of the insertion hole 31 in the vehicle front-rear direction, and between the upper side and the lower side (the vehicle upper side and the lower side) of the insertion hole 31. A space is formed. Therefore, in the vibration isolation leg portion 50, the vertical spring constant when the inner cylinder member 40 is displaced in the vehicle vertical direction is made smaller than the horizontal spring constant when the inner cylinder member 40 is displaced in the vehicle left-right direction. Yes.

防振脚部50の他端側には、ブラケット部材30の前面および背面となる外面(図2(b)左側面および右側面)から、内筒部材40の軸方向(図2左右方向)へ向けて突出される第2壁覆設ゴム53が連なっている。第2壁覆設ゴム53は、シール面部53a及びストッパ面部53bを備える。ストッパ面部53bは、シール面部53aに段差53cを介して連設されており、その段差53cの分だけシール面部53aよりも内筒部材40の軸方向へ突出されている。即ち、ストッパ面部53bは、シール面部53aよりもブラケット部材30の外面からの突出高さが高くされている。内筒部材40に締結固定された相手部品500(図13参照)が大変位入力時に相対変位した場合には、その相手部品にストッパ面部53bが当接してその変位を規制するストッパ部として機能する。   On the other end side of the anti-vibration leg portion 50, from the outer surfaces (the left side surface and the right side surface in FIG. 2B) that are the front surface and the back surface of the bracket member 30, the axial direction of the inner cylinder member 40 (the left and right direction in FIG. 2). The second wall covering rubber 53 protruding toward the line is continuous. The second wall covering rubber 53 includes a seal surface portion 53a and a stopper surface portion 53b. The stopper surface portion 53b is connected to the seal surface portion 53a via a step 53c, and protrudes in the axial direction of the inner cylinder member 40 from the seal surface portion 53a by the amount of the step 53c. That is, the stopper surface portion 53b has a higher protruding height from the outer surface of the bracket member 30 than the seal surface portion 53a. When the counterpart component 500 (see FIG. 13) fastened and fixed to the inner cylinder member 40 is relatively displaced when a large displacement is input, the stopper surface portion 53b contacts the counterpart component and functions as a stopper portion that regulates the displacement. .

次いで、図3及び図4を参照して、外側部材60について説明する。図3(a)は、外側部材60の斜視図であり、図3(b)は、外側部材60の背面図である。図4(a)は、図3(b)のIVa−IVa線における外側部材60の断面図であり、図4(b)は、図3(b)のIVb−IVb線における外側部材60の断面図である。   Next, the outer member 60 will be described with reference to FIGS. 3 and 4. FIG. 3A is a perspective view of the outer member 60, and FIG. 3B is a rear view of the outer member 60. 4A is a cross-sectional view of the outer member 60 taken along line IVa-IVa in FIG. 3B, and FIG. 4B is a cross-sectional view of the outer member 60 taken along line IVb-IVb in FIG. FIG.

図3及び図4に示すように、外側部材60は、金属材料からなる1枚の平板状体にプレス加工機による絞り加工を施すことで、容器状に形成された部材であり、一対の防振脚部50の他端側にそれぞれ埋設されると共に、ブラケット部材30に係合される。この外側部材60は、背面視矩形状に形成される基板部61と、その基板部61の外縁であって対向する2辺(図3(b)上側および下側)から背面側(図3(b)紙面手前側)へ向けて延設される一対の第1壁部62と、基板部61の残りの2辺から背面側へ向けて延設されると共に一対の第1壁部61の端部同士を連結する一対の第2壁部63とを備える。   As shown in FIGS. 3 and 4, the outer member 60 is a member formed in a container shape by drawing a flat plate made of a metal material by a press machine, and a pair of protective members. It is embedded in the other end side of the swing leg 50 and engaged with the bracket member 30. The outer member 60 has a substrate portion 61 formed in a rectangular shape when viewed from the back, and two opposite sides (the upper side and the lower side in FIG. 3B) that are the outer edges of the substrate portion 61 and the rear side (FIG. 3 ( b) A pair of first wall portions 62 extending toward the front side of the paper) and the ends of the pair of first wall portions 61 extending from the remaining two sides of the substrate portion 61 toward the back side. And a pair of second wall parts 63 that connect the parts.

基板部61は、背面側へ向けて凸となり軸心L1を有する円弧状に湾曲して形成される(図4(a)参照)。即ち、基板部61は、図4(a)において、紙面垂直方向に軸心L1が伸びる円筒の側壁の一部を切り取った形状に形成される。基板部61の板面中央には、背面視略矩形状の貫通孔61aが穿設される。   The substrate portion 61 is formed to be convex toward the back side and to be curved in an arc shape having the axis L1 (see FIG. 4A). That is, in FIG. 4A, the substrate portion 61 is formed in a shape in which a part of a side wall of a cylinder whose axis L1 extends in a direction perpendicular to the paper surface is cut off. A through-hole 61 a having a substantially rectangular shape when viewed from the back is formed in the center of the plate surface of the substrate portion 61.

貫通孔61aは、一対の第2壁部63に対してはそれらの対向間中央に配置されているが、一対の第1壁部62に対してはそれらの対向間中央よりも一方側(図3(b)及び図4(a)下側)へ偏って配置されている。よって、図4(a)において、貫通孔61aの上方側の基板部61により形成される弧の中心角θaは、貫通孔61aの下方側の基板部61により形成される弧の中心角θbよりも大きくされている。   The through-hole 61a is disposed at the center between the pair of second wall portions 63, but is located on one side of the pair of first wall portions 62 with respect to the pair of first wall portions 62 (see FIG. 3 (b) and FIG. 4 (a) lower side). Therefore, in FIG. 4A, the central angle θa of the arc formed by the substrate portion 61 on the upper side of the through hole 61a is larger than the central angle θb of the arc formed by the substrate portion 61 on the lower side of the through hole 61a. Has also been enlarged.

第1壁部62は、ブラケット部材30に対する外側部材60の車両前後方向(矢印F,B方向)及び車両上下方向(矢印U,D)への移動を主に規制するための平板状の部位であり(図12参照)、一対が対向配置されると共に、それら一対の対向間隔が、基板部61の背面側から離間するに従って拡大する末広がり状に形成されている(図4(a)参照)。なお、一対の第1壁部62は互いに同じ形状に形成されている。   The first wall portion 62 is a flat plate-like portion for mainly restricting movement of the outer member 60 with respect to the bracket member 30 in the vehicle longitudinal direction (arrows F and B directions) and the vehicle vertical direction (arrows U and D). Yes (see FIG. 12), and a pair is arranged opposite to each other, and the distance between the pair of opposing faces is formed so as to widen away from the back side of the substrate portion 61 (see FIG. 4 (a)). The pair of first wall portions 62 are formed in the same shape.

第2壁部63は、ブラケット部材30に対する外側部材60の車両左右方向(矢印L,R)への移動を主に規制するための平板状の部位であり(図10参照)、一対が平行を保ちつつ対向配置されている(図4(b)参照)。これら一対の第2壁部63には、正面視円形の孔63aが、各第2壁部63に対して2箇所ずつ合計4箇所に穿設されている。   The second wall portion 63 is a flat portion for mainly restricting movement of the outer member 60 in the left-right direction of the vehicle (arrows L and R) with respect to the bracket member 30 (see FIG. 10), and a pair of the second wall portions 63 are parallel to each other. They are arranged opposite to each other (see FIG. 4B). In the pair of second wall portions 63, holes 63 a having a circular shape when viewed from the front are formed in a total of four locations, two locations for each second wall portion 63.

これら各孔63aは、図4(a)に示すように、一対の第1壁部62の内の一方の第1壁部62側(図4(a)下側)に偏った位置に配置されている。詳細には、2箇所に穿設される孔63aの内の一方の孔63aは一対の第1壁部62間の略中央に、他方の孔63aは一対の第1壁部62の内の一方の第1壁部62側に、それぞれ配置されている。   As shown in FIG. 4A, each of the holes 63a is disposed at a position biased toward one first wall 62 side (lower side in FIG. 4A) of the pair of first wall portions 62. ing. Specifically, one of the holes 63 a formed at two locations is substantially at the center between the pair of first wall portions 62, and the other hole 63 a is one of the pair of first wall portions 62. Are arranged on the first wall 62 side.

第2壁部63には、正面視半円状の膨出部が外縁から膨出形成されており、その膨出部と同心となる位置に各孔63aが配置されている。なお、このように、膨出部と貫通孔61aとが共に、一対の第1壁部61の対向間中央よりも一方側に偏って配置されていることで、貫通孔61aによる強度の低下を、膨出部により補うことができるので、外側部材60全体としての強度の向上を図ることができる。   The second wall 63 has a bulged portion that is semicircular when viewed from the front, and is bulged from the outer edge, and each hole 63a is disposed at a position that is concentric with the bulged portion. As described above, since both the bulging portion and the through hole 61a are arranged to be deviated to one side from the center between the pair of first wall portions 61, the strength of the through hole 61a is reduced. Since it can be compensated by the bulging portion, the strength of the outer member 60 as a whole can be improved.

ここで、一対の第2壁部63は、孔63aの配置も含め、互いに同じ形状に形成されている。そのため、外側部材60は、防振装置1(第1成形体100)の左右いずれにも共通に使用することができる(図7参照)。   Here, the pair of second wall portions 63 are formed in the same shape as each other including the arrangement of the holes 63a. Therefore, the outer member 60 can be used in common on both the left and right sides of the vibration isolator 1 (first molded body 100) (see FIG. 7).

次いで、図5から図8を参照して、第1成形体100について説明する。図5は、第1成形体100の斜視図である。図6(a)は、第1成形体100の正面図であり、図6(b)は、第1成形体100の側面図である。また、図7(a)は、図6(a)のVIIa−VIIa線における第1成形体100の断面図であり、図7(b)は、図6(b)のVIIb−VIIb線における第1成形体100の断面図であり、図8は、図6(a)のVIII−VIII線における第1成形体100の断面図である。   Next, the first molded body 100 will be described with reference to FIGS. FIG. 5 is a perspective view of the first molded body 100. FIG. 6A is a front view of the first molded body 100, and FIG. 6B is a side view of the first molded body 100. 7A is a cross-sectional view of the first molded body 100 taken along the line VIIa-VIIa in FIG. 6A, and FIG. 7B is a cross-sectional view taken along the line VIIb-VIIb in FIG. FIG. 8 is a sectional view of the first molded body 100 taken along the line VIII-VIII in FIG.

図5から図8に示すように、第1成形体100は、防振装置1を製造する過程(ゴム加硫金型300を使用した加硫工程)における1次加工品であり、内筒部材40と、その内筒部材40に一端側が連結される一対の防振脚部50と、それら一対の防振脚部50の他端側がそれぞれ連結される一対の外側部材60と、その外側部材60を覆う各覆設ゴム51〜53とを主に備え、左右(図6(a)左右)対称に形成される。   As shown in FIGS. 5 to 8, the first molded body 100 is a primary processed product in the process of manufacturing the vibration isolator 1 (the vulcanization process using the rubber vulcanization mold 300), and the inner cylinder member 40, a pair of anti-vibration legs 50 having one end connected to the inner cylinder member 40, a pair of outer members 60 to which the other ends of the pair of anti-vibration legs 50 are respectively connected, and the outer member 60 The covering rubbers 51 to 53 are mainly provided and are symmetrically formed on the left and right (FIG. 6 (a) left and right).

図5から図8に示すように、内筒部材40の上方側および下方側は、一対の防振脚部50の一端側同士が連なることで、ゴム状弾性体により覆われており、車両上下方向(矢印U,D方向)への大変位入力時には、このゴム状弾性体を介して、内筒部材40が挿通孔31の内周面に当接される(図1参照)。   As shown in FIGS. 5 to 8, the upper side and the lower side of the inner cylinder member 40 are covered with rubber-like elastic bodies by connecting one end sides of a pair of vibration isolation legs 50, and When a large displacement is input in the direction (directions of arrows U and D), the inner cylindrical member 40 is brought into contact with the inner peripheral surface of the insertion hole 31 through the rubber-like elastic body (see FIG. 1).

一対の外側部材60は、その背面側を向き合わせつつ所定間隔を隔てて対向配置され、その対向間に内筒部材40が配置される。なお、一対の外側部材60は、その基板部61の軸心L1(図4(a)参照)が内筒部材40の軸心と平行となる状態で配置される。   The pair of outer members 60 are opposed to each other with a predetermined interval while facing the back sides thereof, and the inner cylinder member 40 is disposed between the opposed members. The pair of outer members 60 are disposed in a state where the axis L1 (see FIG. 4A) of the base plate portion 61 is parallel to the axis of the inner cylinder member 40.

一対の防振脚部50は、内筒部材40と一対の外側部材60との間をそれぞれ連結し、正面視において、左右に直線状に延びる形状に形成されている。防振脚部50には、外側部材60の外面を覆う各覆設ゴム51〜53が連なっている。   The pair of anti-vibration legs 50 connect the inner cylinder member 40 and the pair of outer members 60, respectively, and are formed in a shape extending linearly to the left and right in a front view. The anti-vibration legs 50 are connected to respective covering rubbers 51 to 53 that cover the outer surface of the outer member 60.

基板覆設ゴム51は、貫通孔61a内に充填されつつ、基板部61の外面を一定の厚み寸法で覆う。基板部61の前面側(第1及び第2壁部62,63が延設される側)に覆設される基板覆設ゴム51の厚み寸法は、十分に薄くされており、本実施の形態では、基板部61の厚み寸法よりも小さくされている。そのため、後述するように、樹脂成形工程において、空間Sに樹脂材料が充填されると、その射出圧力により、樹脂材料が貫通孔61aに嵌り込む。   The substrate covering rubber 51 covers the outer surface of the substrate portion 61 with a constant thickness while filling the through hole 61a. The thickness of the substrate covering rubber 51 covered on the front side of the substrate portion 61 (the side on which the first and second wall portions 62 and 63 are extended) is sufficiently thin, and this embodiment Then, it is made smaller than the thickness dimension of the board | substrate part 61. FIG. Therefore, as will be described later, when the space S is filled with the resin material in the resin molding step, the resin material is fitted into the through hole 61a by the injection pressure.

第1壁覆設ゴム52は、一対の第1壁部62の外面をそれぞれ一定の厚み寸法で覆い、第2壁覆設ゴム53は、一対の第1壁部63の外面をそれぞれ一定の厚み寸法で覆う。なお、第2壁覆設ゴム53には、厚み寸法を厚くした箇所(ストッパ面部53b)が部分的に形成されている。また、第2壁部53の孔53aには、ゴム加硫金型300のゴム型下ピン301a及びゴム型上ピン302aが挿通されるので、第2壁覆設ゴム53が充填されていない。同様に、第2壁部63の外面(対向面と反対側の面)は、ゴム加硫金型300のゴム型座部301c,302cが当接されるので、ゴム型座部301c,302cに対応する形状の窪みが第2壁覆設ゴム53(シール面部53a)に形成される。また、第2壁部63の対向面側に覆設される第2壁覆設ゴム53は、孔63aに対応する部分のみ厚み寸法が厚くされている。   The first wall covering rubber 52 covers the outer surfaces of the pair of first wall portions 62 with a certain thickness, and the second wall covering rubber 53 covers the outer surfaces of the pair of first wall portions 63 with a certain thickness. Cover with dimensions. The second wall covering rubber 53 is partially formed with a portion (stopper surface portion 53b) having a thick thickness. Further, since the rubber mold lower pin 301a and the rubber mold upper pin 302a of the rubber vulcanizing mold 300 are inserted into the hole 53a of the second wall portion 53, the second wall covering rubber 53 is not filled. Similarly, the rubber mold seats 301c and 302c of the rubber vulcanization mold 300 are brought into contact with the outer surface of the second wall 63 (the surface opposite to the facing surface), so that the rubber mold seats 301c and 302c are in contact with each other. A correspondingly shaped recess is formed in the second wall covering rubber 53 (seal surface portion 53a). In addition, the second wall covering rubber 53 that is covered on the opposite surface side of the second wall portion 63 is thickened only in a portion corresponding to the hole 63a.

このように、外側部材60の外面を、各覆設ゴム51〜53が所定の厚み寸法で覆うことで、外側部材60の第1壁部62及び第2壁部63の対向面間(即ち、基板部61、第1壁部62及び第2壁部63で取り囲まれた部分)に空間Sが形成される。かかる空間Sには、後述するように、ブラケット部材30の一部が内嵌される。   As described above, the covering rubbers 51 to 53 cover the outer surface of the outer member 60 with a predetermined thickness dimension, so that the opposing surfaces of the first wall portion 62 and the second wall portion 63 of the outer member 60 (that is, A space S is formed in a portion surrounded by the substrate portion 61, the first wall portion 62, and the second wall portion 63). As will be described later, a part of the bracket member 30 is fitted in the space S.

なお、第2壁覆設ゴム53は、上述したように、シール面部53a及びストッパ面部53bを備える。シール面部53aは、第1壁覆設ゴム52に連設され、外面(空間Sと反対側の面)が内筒部材40の軸方向に直交する平坦面状に形成されている。ストッパ面部53bは、正面視(図6(a)参照)においてシール面部53aよりも小さな外形に形成されると共に内筒部材40側の縁部に沿って位置し、かつ、シール面部53aの外面から内筒部材40の軸方向へ向けて突出され、シール面部53aとの間に段差53cが形成されている。   As described above, the second wall covering rubber 53 includes the seal surface portion 53a and the stopper surface portion 53b. The seal surface portion 53 a is connected to the first wall covering rubber 52 and has an outer surface (surface opposite to the space S) formed in a flat surface shape orthogonal to the axial direction of the inner cylinder member 40. The stopper surface portion 53b is formed in an outer shape smaller than the seal surface portion 53a in a front view (see FIG. 6A) and is positioned along the edge on the inner cylinder member 40 side, and from the outer surface of the seal surface portion 53a. A step 53c is formed between the inner cylindrical member 40 and the seal surface portion 53a.

次いで、図9から図12を参照して、防振装置1の製造方法について説明する。図9は、内筒部材40及び外側部材60がセットされて型締めされたゴム加硫金型300の断面図であり、キャビティ内にゴム状弾性体が注入される前の状態が図示されている。また、図10は、第1成形体100がセットされて型締めされた樹脂成形金型400の断面図であり、キャビティC内に樹脂材料が注入される前の状態が図示されている。なお、図9及び図10における断面は、図7(a)に示す断面に対応する。   Next, a method for manufacturing the vibration isolator 1 will be described with reference to FIGS. FIG. 9 is a cross-sectional view of the rubber vulcanization mold 300 in which the inner cylinder member 40 and the outer member 60 are set and clamped, and illustrates a state before the rubber-like elastic body is injected into the cavity. Yes. FIG. 10 is a cross-sectional view of the resin molding die 400 in which the first molded body 100 is set and clamped, and shows a state before the resin material is injected into the cavity C. 9 and FIG. 10 corresponds to the cross section shown in FIG.

図9に示すように、ゴム加硫金型300は、第1成形体100を加硫成形するための金型であり、上下(図9上下方向、内筒部材40の軸方向)に型締めされる下型301及び上型302と、それら上下型301,302の間に挟まれる中型303とを備え、ゴム加硫工程において、型締めにより形成されるキャビティ内に注入孔(図示せず)から注入されて充填されたゴム状弾性体を加硫することで、第1成形体100(図5参照)を成形する。   As shown in FIG. 9, the rubber vulcanization mold 300 is a mold for vulcanization molding of the first molded body 100, and is clamped vertically (in the vertical direction in FIG. 9, the axial direction of the inner cylinder member 40). A lower mold 301 and an upper mold 302, and an intermediate mold 303 sandwiched between the upper and lower molds 301 and 302, and an injection hole (not shown) in a cavity formed by clamping in the rubber vulcanization process. The first molded body 100 (refer to FIG. 5) is molded by vulcanizing the rubber-like elastic body injected and filled from above.

下型301は、第1成形体100の正面側(図6(a)紙面手前側)の外形を形成するための部位であり、内筒部材40を係止するための内筒係止部301aと、外側部材60を係止するためのゴム下型ピン301b及びゴム下型座部301cとを備える。   The lower mold 301 is a part for forming the outer shape of the first molded body 100 on the front side (the front side in FIG. 6A), and an inner cylinder locking portion 301a for locking the inner cylinder member 40. And a lower rubber mold pin 301b and a lower rubber seat 301c for locking the outer member 60.

内筒係止部301aは、内筒部材40の下端を係止する部位であり、内筒部材40の下端が内嵌可能に凹設された凹設溝部と、内筒部材40の下端開口から挿入される挿入ピンとを備える。   The inner cylinder locking portion 301 a is a portion that locks the lower end of the inner cylinder member 40, and includes a recessed groove portion that is recessed so that the lower end of the inner cylinder member 40 can be fitted inside, and a lower end opening of the inner cylinder member 40. And an insertion pin to be inserted.

ゴム下型ピン301bは、外側部材60の孔63aに挿入される円柱状のピンであり、片側2箇所ずつ合計4箇所に形成されている。これら各ゴム下型ピン301bが各孔63aに挿入されることで、外側部材60が所定位置に位置決めされる。   The lower rubber pin 301b is a cylindrical pin that is inserted into the hole 63a of the outer member 60, and is formed at a total of four locations, two on each side. By inserting each of these lower rubber mold pins 301b into each of the holes 63a, the outer member 60 is positioned at a predetermined position.

ゴム下型座部301cは、外側部材60の第2壁部63の外面を支持する部位であり、ゴム下型ピン301bよりも大径の円柱状に形成されると共にゴム下型ピン301bと同心に形成されている。よって、ゴム下型ピン301bは、ゴム下型ピン301bとの間に平坦面状の段差面を有し、その段差面が第2壁部63の外面に当接して支持する円環状の座面とされている。なお、かかる座面は、その直径が第2壁部63に形成される半円状の膨出部よりも小径に設定されており、第2壁部63の外面内に収まるように形成されている。   The lower rubber mold seat portion 301c is a portion that supports the outer surface of the second wall portion 63 of the outer member 60, and is formed in a columnar shape having a larger diameter than the lower rubber pin 301b and concentric with the lower rubber pin 301b. Is formed. Therefore, the rubber lower mold pin 301b has a flat stepped surface between the rubber lower mold pin 301b and the stepped surface abuts on and supports the outer surface of the second wall portion 63. It is said that. The seat surface is set to have a diameter smaller than that of the semicircular bulge portion formed in the second wall portion 63 and is formed so as to be within the outer surface of the second wall portion 63. Yes.

上型302は、第1成形体100の背面側(図6(a)紙面奥側)の外形を形成するための部位であり、下型301に対して上下動(図9上下方向移動)することで、型締め及び型開き可能に構成され、内筒部材40を係止するための内筒係止部302aと、外側部材60を係止するためのゴム上型ピン302b及びゴム上型座部302cとを備える。   The upper mold 302 is a part for forming the outer shape of the back side of the first molded body 100 (FIG. 6A, the back side of the paper), and moves up and down (moves up and down in FIG. 9) with respect to the lower mold 301. Accordingly, the inner cylinder locking portion 302a for locking the inner cylinder member 40, the rubber upper mold pin 302b for locking the outer member 60, and the rubber upper mold seat are configured to be mold-clamped and mold-openable. Part 302c.

なお、内筒係止部302a、ゴム上型ピン302b及びゴム上型座部302cは、下型301における内筒係止部301a、ゴム下型ピン301b及びゴム下型座部301cと同一の構成であるので、その説明を省略する。但し、ゴム上型ピン302bは、最大径が下型301におけるゴム下型ピン301bの外径よりも若干小さくされると共に、先端側ほど小径となる円錐形状のテーパピンとして構成されている。これにより、外側部材60をセットする際には、その外側部材60の寸法公差を吸収して、作業性の向上を図ることができると共に、外側部材60のキャビティ内での保持を適正な姿勢で強固に行うことができる。   The inner cylinder locking portion 302a, the rubber upper mold pin 302b, and the rubber upper mold seat portion 302c have the same configuration as the inner cylinder locking portion 301a, the rubber lower mold pin 301b, and the rubber lower mold seat portion 301c in the lower mold 301. Therefore, the description thereof is omitted. However, the upper rubber mold pin 302b is configured as a conical tapered pin whose maximum diameter is slightly smaller than the outer diameter of the lower rubber mold pin 301b in the lower mold 301 and becomes smaller in diameter toward the distal end side. Thereby, when setting the outer member 60, the dimensional tolerance of the outer member 60 can be absorbed to improve workability, and the outer member 60 can be held in the cavity in an appropriate posture. It can be done firmly.

また、中型303は、第1成形体100の上下面および両側面(図6(a)上下面および左右面)の外形を形成するための部位であり、分割可能な複数から構成され、下型301の所定位置に配置される。   The middle mold 303 is a part for forming the outer shapes of the upper and lower surfaces and both side surfaces (the upper and lower surfaces and the left and right surfaces in FIG. 6A) of the first molded body 100, and is composed of a plurality of separable lower molds. 301 is arranged at a predetermined position.

図10に示すように、樹脂成形金型400は、第1成形体100をブラケット部材30にインサート成形するための金型であり、上下(図9上下方向、内筒部材40の軸方向)に型締めされる下型401及び上型402を備え、型締めにより形成されるキャビティC内に注入孔(図示せず)から樹脂材料を注入(射出)して固化させることで、防振装置1を成形する。   As shown in FIG. 10, the resin molding die 400 is a die for insert-molding the first molded body 100 to the bracket member 30, and vertically (in the vertical direction in FIG. 9, the axial direction of the inner cylinder member 40). The vibration isolator 1 includes a lower mold 401 and an upper mold 402 that are clamped, and a resin material is injected (injected) into a cavity C formed by mold clamping from an injection hole (not shown) and solidified. Is molded.

下型401は、上型402と共にブラケット30の外形を形成するための部位であり、内筒部材40を係止するための内筒係止部401aと、外側部材60を係止するための樹脂下型ピン401b及び樹脂下型座部401cとを備える。なお、内筒係止部401a、樹脂下型ピン401b及び樹脂下型座部401cは、ゴム加硫金型300の下型301における内筒係止部301a、ゴム下型ピン301b及びゴム下型座部301cと同一の構成であるので、その説明を省略する。   The lower mold 401 is a part for forming the outer shape of the bracket 30 together with the upper mold 402, and an inner cylinder locking portion 401a for locking the inner cylinder member 40 and a resin for locking the outer member 60. A lower mold pin 401b and a resin lower mold seat portion 401c are provided. The inner cylinder locking portion 401a, the resin lower mold pin 401b, and the resin lower mold seat portion 401c are the inner cylinder locking portion 301a, the rubber lower mold pin 301b, and the rubber lower mold in the lower mold 301 of the rubber vulcanizing mold 300. Since it is the same structure as the seat part 301c, the description is abbreviate | omitted.

上型402は、下型401に対して上下動(図10上下方向移動)することで、型締め及び型開き可能に構成され、内筒部材40を係止するための内筒係止部402aと、外側部材60を係止するための樹脂上型ピン402b及び樹脂上型座部402cとを備える。なお、内筒係止部402a、樹脂上型ピン402b及び樹脂上型座部402cは、ゴム加硫金型300の上型302における内筒係止部302a、ゴム上型ピン302b及びゴム上型座部302cと同一の構成であるので、その説明を省略する。   The upper mold 402 is configured to be mold-clamped and mold-openable by moving up and down (moving up and down in FIG. 10) with respect to the lower mold 401, and an inner cylinder locking portion 402a for locking the inner cylinder member 40. And an upper resin mold pin 402b for locking the outer member 60 and an upper resin mold seat portion 402c. The inner cylinder locking portion 402a, the resin upper mold pin 402b, and the resin upper mold seat portion 402c are the inner cylinder locking portion 302a, the rubber upper mold pin 302b, and the rubber upper mold in the upper mold 302 of the rubber vulcanizing mold 300, respectively. Since it is the same structure as the seat part 302c, the description is abbreviate | omitted.

なお、下型401及び上型402には、圧入孔形成ピン(図示せず)が形成されており、樹脂加硫工程において、ブラケット部材30の所定位置に2つの圧入孔(各取付金具11,12とそれらの外周面にそれぞれ加硫接着される弾性体21,22とからなるブッシュが圧入される孔、図1参照)を貫通形成する。   The lower mold 401 and the upper mold 402 are formed with press-fitting hole forming pins (not shown). In the resin vulcanization process, two press-fitting holes (each of the mounting brackets 11, 12 and holes (see FIG. 1) through which bushes composed of elastic bodies 21 and 22 vulcanized and bonded to the outer peripheral surfaces thereof are press-fitted.

防振装置1の製造は、まず、ゴム加硫工程を行い、第1成形体100を成形し、次いで、樹脂成形工程へ移行し、第1成形体100をブラケット部材30にインサート成形することで行われる。   The vibration isolator 1 is manufactured by first performing a rubber vulcanization process to form the first molded body 100, then proceeding to a resin molding process, and insert molding the first molded body 100 into the bracket member 30. Done.

即ち、ゴム加硫工程では、まず、ゴム加硫金型300の下型301に内筒部材40及び外側部材60をセットし、次いで、中型303を下型301の所定位置に配置した後、上型302を下降移動させて、型締めする。これにより、図9に示すように、ゴム状弾性体を加硫するための加硫空間であるキャビティが形成されるので、図示しない注入孔からキャビティ内にゴム状弾性体を注入して、かかるキャビティ内にゴム状弾性体を充填する。そして、ゴム加硫金型300を加圧・加熱した状態で所定時間保持することで、ゴム状弾性体(防振脚部50及び各覆設ゴム51〜53)が加硫され、第1成形体100が成形される。   That is, in the rubber vulcanization process, first, the inner cylinder member 40 and the outer member 60 are set on the lower mold 301 of the rubber vulcanization mold 300, and then the middle mold 303 is disposed at a predetermined position on the lower mold 301, The mold 302 is moved down and clamped. As a result, a cavity, which is a vulcanization space for vulcanizing the rubber-like elastic body, is formed as shown in FIG. 9, and the rubber-like elastic body is injected into the cavity from an injection hole (not shown). A rubber-like elastic body is filled in the cavity. Then, by holding the rubber vulcanizing mold 300 in a pressurized and heated state for a predetermined time, the rubber-like elastic body (anti-vibration leg portion 50 and the respective covering rubbers 51 to 53) is vulcanized, and the first molding is performed. The body 100 is molded.

この場合、外側部材60は、一対の第2壁部63のそれぞれに2箇所ずつ孔63aが穿設されている。これら各孔63aは、一対の第1壁部62の対向間中央よりも一方側に偏った位置に配置されている(図4(a)参照)。そのため、外側部材60をゴム加硫金型300の下型301にセットする際には、第2壁部63に穿設された各孔63aへ各ゴム下型ピン301bをそれぞれ適切に挿通させることが必要とされる。   In this case, the outer member 60 has two holes 63 a in each of the pair of second wall portions 63. Each of these holes 63a is disposed at a position that is biased to one side of the center between the pair of first wall portions 62 (see FIG. 4A). Therefore, when the outer member 60 is set in the lower mold 301 of the rubber vulcanizing mold 300, each rubber lower mold pin 301b is appropriately inserted into each hole 63a formed in the second wall 63. Is needed.

即ち、外側部材60の向きを正しく設定して、各孔63aのそれぞれへ対応するゴム下型ピン301bをそれぞれ挿通させなければ、外側部材60の第2壁部63を下型301のキャビティ(凹部)内に収容させることができない(第1壁覆設ゴム62の厚み寸法が一対の第2壁部52の離間間隔よりも十分に小さいため)。よって、貫通孔61aが偏った位置に形成され、外側部材60に方向性がある場合であっても、かかる外側部材60をゴム加硫金型300へセットする際の作業不良(設置不良)を確実に抑制することができる。   That is, if the orientation of the outer member 60 is set correctly and the corresponding rubber lower mold pins 301b are not inserted into the respective holes 63a, the second wall 63 of the outer member 60 is inserted into the cavity (recessed portion) of the lower mold 301. ) (Because the thickness dimension of the first wall covering rubber 62 is sufficiently smaller than the distance between the pair of second wall portions 52). Therefore, even when the through-hole 61a is formed at a biased position and the outer member 60 has directionality, work failure (setting failure) when setting the outer member 60 to the rubber vulcanizing mold 300 is avoided. It can be surely suppressed.

また、一対の第2壁部63には、それぞれ2箇所ずつに孔63aが穿設されるので、ゴム加硫工程において、外側部材60を下型301にセットした状態では、かかる外側部材60の回転を確実に規制することができる。よって、上型302を下型301に型締めする際には、各ゴム上型ピン302bを各孔63aへ確実に挿入させることができる。   Further, since the pair of second wall portions 63 are provided with holes 63a at two locations, respectively, in a state where the outer member 60 is set on the lower mold 301 in the rubber vulcanization process, The rotation can be reliably controlled. Therefore, when the upper mold 302 is clamped to the lower mold 301, each rubber upper mold pin 302b can be surely inserted into each hole 63a.

更に、一対の第2壁部63のそれぞれの各孔63aにゴム下型ピン301b及びゴム上型ピン302bがそれぞれ挿通されることで、ゴム加硫金型300のキャビティ内において、外側部材60を確実に保持できるので、ゴム状弾性体を介して作用する加硫圧力による外側部材60の変形を抑制することができる。   Further, the rubber lower mold pin 301b and the rubber upper mold pin 302b are respectively inserted into the holes 63a of the pair of second wall portions 63, so that the outer member 60 is placed in the cavity of the rubber vulcanizing mold 300. Since it can hold | maintain reliably, the deformation | transformation of the outer member 60 by the vulcanization pressure which acts via a rubber-like elastic body can be suppressed.

また、このように、外側部材60の設置不良および変形の抑制を可能とするために、孔63a及びゴム下型ピン301b等を複数設ける構成であっても、これら孔63a及びゴム下型ピン301b等は、断面円形という簡素な形状に形成されているので、その製造を容易として、防振装置1及びゴム加硫金型300の製品コストの低減を図ることができる。   Further, in this way, even in a configuration in which a plurality of holes 63a and lower rubber mold pins 301b and the like are provided in order to enable the installation failure and deformation of the outer member 60 to be suppressed, these holes 63a and lower rubber mold pins 301b. Are formed in a simple shape having a circular cross section, and therefore, the manufacture thereof is facilitated, and the product cost of the vibration isolator 1 and the rubber vulcanizing mold 300 can be reduced.

外側部材60を覆う各覆設ゴム51〜53は、防振脚部50に連なるゴム状弾性体からなるので、防振脚部50と各覆設ゴム51〜53とを同時に加硫成形することができ、その分、製造コストの削減を図ることができる。また、このように、各覆設ゴム51〜53を形成することで、外側部材60全体をゴム状弾性体で覆うことができるので、外側部材60の耐食性の向上を図ることができる。   Since each covering rubber 51 to 53 covering the outer member 60 is made of a rubber-like elastic body connected to the vibration isolating leg 50, the vibration isolating leg 50 and each covering rubber 51 to 53 are simultaneously vulcanized and molded. The manufacturing cost can be reduced accordingly. In addition, by forming the covering rubbers 51 to 53 in this way, the entire outer member 60 can be covered with the rubber-like elastic body, so that the corrosion resistance of the outer member 60 can be improved.

ここで、ゴム加硫金型300のキャビティ内に設置された外側部材60は、その外面を覆う各覆設ゴム51〜53の厚みの分、全面にわたってゴム加硫金型300との間に隙間が空くため、ゴム状弾性体を介して作用する加硫圧力によって、変形されやすい。特に、基板部61は、ゴム下型ピン301b等により支持される第2壁部63に比較して、変形が顕著となる。これに対し、本実施の形態における防振装置1では、基板部61に貫通孔61aが貫通形成されているので、ゴム状弾性体を介して作用する加硫圧力を、貫通孔61aによって逃がすことができ、その結果、外側部材60の変形を抑制することができる。   Here, the outer member 60 installed in the cavity of the rubber vulcanization mold 300 has a gap between it and the rubber vulcanization mold 300 over the entire surface by the thickness of the respective covering rubbers 51 to 53 covering the outer surface. Therefore, it is easily deformed by the vulcanization pressure acting through the rubber-like elastic body. In particular, the substrate portion 61 is significantly deformed compared to the second wall portion 63 supported by the lower rubber mold pins 301b and the like. On the other hand, in the vibration isolator 1 according to the present embodiment, since the through hole 61a is formed through the substrate portion 61, the vulcanization pressure acting via the rubber-like elastic body is released by the through hole 61a. As a result, deformation of the outer member 60 can be suppressed.

なお、ゴム加硫金型300は、第1成形体100のパーティングラインPL(下型301と中型303との合わせ面および上型302と中型303との合わせ面に沿って第1成形体100の表面に形成されるバリ、図11及び図12参照)の位置が、外側部材60の第2壁部63よりも内方側(即ち、貫通孔61a側)となるように、上下型301,302と中型303との割り面の位置を設定している。   The rubber vulcanizing mold 300 includes a first molded body 100 along the parting line PL (the mating surface of the lower mold 301 and the middle mold 303 and the mating surface of the upper mold 302 and the middle mold 303) of the first molded body 100. The upper and lower molds 301, 301 are arranged so that the position of the burr formed on the surface of the outer member 60 (see FIGS. 11 and 12) is on the inner side (that is, the through hole 61a side) than the second wall 63 of the outer member 60. The position of the split surface between 302 and the middle mold 303 is set.

次いで、樹脂成形工程では、樹脂成形金型400の下型401に第1成形体100をセットし、次いで、上型402を下降移動させて、型締めする。これにより、図10に示すように、樹脂材料を充填して固化させるための空間であるキャビティCが形成されるので、図示しない注入孔からキャビティC内に樹脂材料を注入(射出)して、所定時間保持することで、樹脂材料が固化され、第1成形体100がブラケット部材30にインサート成形される。最後に、ブッシュをブラケット部材30の圧入孔へ圧入することで、防振装置1の製造が完了する。   Next, in the resin molding step, the first molded body 100 is set on the lower mold 401 of the resin molding die 400, and then the upper mold 402 is moved downward and clamped. As a result, as shown in FIG. 10, a cavity C that is a space for filling and solidifying the resin material is formed, so that the resin material is injected (injected) into the cavity C from an injection hole (not shown), By holding for a predetermined time, the resin material is solidified, and the first molded body 100 is insert-molded into the bracket member 30. Finally, the bushing is press-fitted into the press-fitting hole of the bracket member 30 to complete the manufacture of the vibration isolator 1.

この場合、樹脂成形金型400の下型401への第1成形体100のセットは、外側部材60の第2壁部63に穿設された孔63aに樹脂下型ピン401bを挿通させることで行われるので、上述したゴム加硫工程の場合と同様に、第1成形体100の向き(即ち、外側部材60の向き)を正しく設定して、各孔63aのそれぞれへ対応する樹脂下型ピン401bをそれぞれ挿通させなければ、第1成形体100を下型401のキャビティ(凹部)内に収容させることができない。よって、外側部材60の貫通孔61aが偏った位置に形成され、第1成形体100に方向性がある場合であっても、かかる第1成形体100を樹脂成形金型400へセットする際の作業不良(設置不良)を確実に抑制することができる。   In this case, the first molded body 100 is set in the lower mold 401 of the resin molding die 400 by inserting the resin lower mold pin 401b through the hole 63a formed in the second wall portion 63 of the outer member 60. Therefore, as in the case of the rubber vulcanization process described above, the direction of the first molded body 100 (that is, the direction of the outer member 60) is set correctly, and the resin lower mold pin corresponding to each of the holes 63a. The first molded body 100 cannot be accommodated in the cavity (concave portion) of the lower mold 401 unless the respective 401b is inserted. Therefore, even when the through-hole 61a of the outer member 60 is formed at a deviated position and the first molded body 100 has directionality, the first molded body 100 is set in the resin molding die 400. Work defects (defective installation) can be reliably suppressed.

また、上述したゴム加硫工程の場合と同様に、第1成形体100を下型401にセットした状態では、第2壁部63の2箇所の孔63aそれぞれに樹脂下型ピン401bが挿入されることで、第1成形体100の回転を確実に規制することができる。よって、上型402を下型401に型締めする際には、各樹脂上型ピン402bを各孔63aへ確実に挿入させることができる。   Similarly to the rubber vulcanization process described above, in a state where the first molded body 100 is set in the lower mold 401, the resin lower mold pins 401b are inserted into the two holes 63a of the second wall portion 63, respectively. Thereby, rotation of the 1st molded object 100 can be controlled reliably. Therefore, when the upper die 402 is clamped to the lower die 401, each resin upper die pin 402b can be reliably inserted into each hole 63a.

更に、一対の第2壁部63のそれぞれの各孔63aに樹脂下型ピン401b及び樹脂上型ピン402bがそれぞれ挿通されることで、樹脂成形金型400のキャビティ内において、外側部材60を確実に保持できるので、キャビティ内に射出された樹脂材料の射出圧力による外側部材60の変形を抑制することができる。   Further, the lower resin pin 401b and the upper resin mold pin 402b are inserted into the respective holes 63a of the pair of second wall portions 63, so that the outer member 60 can be reliably secured in the cavity of the resin molding die 400. Therefore, deformation of the outer member 60 due to the injection pressure of the resin material injected into the cavity can be suppressed.

なお、上述したゴム加硫工程の場合と同様に、樹脂下型ピン401b及び樹脂上型ピン402bは、断面円形という簡素な形状に形成されているので、その製造を容易として、樹脂成形金型400の製品コストの低減を図ることができる。   As in the case of the rubber vulcanization process described above, the resin lower mold pin 401b and the resin upper mold pin 402b are formed in a simple shape having a circular cross section, which facilitates their manufacture, and makes the resin molding mold 400 product costs can be reduced.

ここで、ゴム加硫工程では、外側部材60の第2壁部63をゴム下型座部301c及びゴム上型座部302cとで支持する。これらゴム下型座部301c及びゴム上型座部302cの座面は、孔63aと同心で第2壁部63の膨出部よりも直径が小さい円環状なので、第2壁部63の外縁からはみ出さずその第2壁部63の板面内に収まる。よって、第2壁部63を覆う第2壁覆設ゴム53は、孔63a近傍が部分的に凹設されるのみであり、四隅に凹部が形成されない。   Here, in the rubber vulcanization step, the second wall portion 63 of the outer member 60 is supported by the lower rubber seat portion 301c and the upper rubber seat portion 302c. The seat surfaces of the lower rubber seat portion 301c and the upper rubber seat portion 302c are concentric with the hole 63a and have an annular shape having a smaller diameter than the bulging portion of the second wall portion 63, and therefore, from the outer edge of the second wall portion 63. It does not protrude and fits within the plate surface of the second wall 63. Therefore, the second wall covering rubber 53 covering the second wall portion 63 is only partially recessed near the hole 63a, and no recess is formed at the four corners.

即ち、従来の製造方法では、第2壁部63の四隅をゴム加硫金型で支持するので、第2壁覆設ゴム53の四隅にゴム加硫金型の支持部に対応する凹部が形成される。そのため、樹脂成形工程では、樹脂材料のシール性を確保することが困難となるため、樹脂成形金型の構造や形状が複雑化して、製造コストが嵩む。これに対し、本実施の形態における製造方法によれば、第2壁覆設ゴム53の四隅に凹部がなく、シール性の確保が容易であるので、樹脂成形金型400の構造や形状を簡素化して、製造コストの低減を図ることができる。   That is, in the conventional manufacturing method, since the four corners of the second wall 63 are supported by the rubber vulcanization mold, the concave portions corresponding to the support portions of the rubber vulcanization mold are formed at the four corners of the second wall covering rubber 53. Is done. For this reason, in the resin molding process, it is difficult to ensure the sealing performance of the resin material, so that the structure and shape of the resin molding die are complicated and the manufacturing cost increases. On the other hand, according to the manufacturing method in the present embodiment, since there are no recesses at the four corners of the second wall covering rubber 53 and it is easy to ensure the sealing performance, the structure and shape of the resin molding die 400 are simplified. Manufacturing cost can be reduced.

また、従来の製造方法のように、第2壁部63の四隅をゴム加硫型で支持する構造であると、第2壁部63と基板部61との間に曲げ加工によるR形状がある場合、かかるR形状は寸法公差が大きいため、その分、R形状部を支持するゴム加硫金型側の支持部も寸法公差を大きく設定する必要が生じ、外側部材60のゴム加硫金型に対する位置精度が低下する。これに対し、本実施の形態における製造方法によれば、第2壁部63の孔63aにゴム下型ピン301b等を挿通させる構成であれば、寸法公差を小さくして、ゴム加硫金型300に対する位置精度の向上を図ることができる。その結果、外側部材60と内筒部材40や防振脚部50との相対位置精度を向上させることができるので、防振装置1の静的および動的な特性の安定化を図ることができる。   Further, when the structure is such that the four corners of the second wall portion 63 are supported by the rubber vulcanization mold as in the conventional manufacturing method, there is an R shape between the second wall portion 63 and the substrate portion 61 by bending. In this case, since the R shape has a large dimensional tolerance, it is necessary to set a large dimensional tolerance for the support portion on the rubber vulcanization mold side that supports the R shape portion. The positional accuracy with respect to is reduced. On the other hand, according to the manufacturing method in the present embodiment, if the rubber lower mold pin 301b or the like is inserted into the hole 63a of the second wall portion 63, the dimensional tolerance is reduced and the rubber vulcanization mold is configured. The positional accuracy with respect to 300 can be improved. As a result, the relative positional accuracy between the outer member 60 and the inner cylindrical member 40 or the vibration isolation leg 50 can be improved, so that the static and dynamic characteristics of the vibration isolation device 1 can be stabilized. .

ここで、ゴム加硫工程で成形される第1成形体100には、外側部材60の第1壁部62と第2壁部63とで取り囲まれた部分(即ち、第1壁覆設ゴム52と第2壁覆設ゴム53とに囲まれた部分)に空間Sが形成される。樹脂成形工程において樹脂材料が樹脂成形金型のキャビティ内に注入されると、その樹脂材料が空間Sに充填される。その結果、ブラケット部材30の一部が空間Sに内嵌された状態に第1成形体100がブラケット部材30にインサート成形される。   Here, the first molded body 100 molded by the rubber vulcanization process includes a portion surrounded by the first wall portion 62 and the second wall portion 63 of the outer member 60 (that is, the first wall covering rubber 52). And a portion surrounded by the second wall covering rubber 53). When the resin material is injected into the cavity of the resin molding die in the resin molding step, the resin material is filled in the space S. As a result, the first molded body 100 is insert-molded into the bracket member 30 in a state where a part of the bracket member 30 is fitted in the space S.

この場合、外側部材60の基板部61に貫通孔61aが貫通形成されているので、樹脂成形工程において、樹脂成形金型のキャビティ内に注入された樹脂材料の注入(射出)圧力を、貫通孔61aを通じて、防振脚部50へ作用させることができる。これにより、防振脚部50に予圧縮を付与することができるので、耐久性の優れた防振部材50を製造することができる。   In this case, since the through hole 61a is formed through the substrate portion 61 of the outer member 60, the injection (injection) pressure of the resin material injected into the cavity of the resin molding die is used as the through hole in the resin molding step. It can be made to act on the vibration isolation leg part 50 through 61a. Thereby, since pre-compression can be provided to the vibration-proof leg part 50, the vibration-proof member 50 excellent in durability can be manufactured.

また、樹脂材料の注入圧力を変更することで、防振脚部50に付与される予圧縮量を変化させることができるので、防振部材1を製造する際に、防振脚部50のばね特性を調整することができる。即ち、防振脚部50の特性をゴム状弾性体の特性(例えば、ゴム硬度)を変更することで調整する場合、そのゴム硬度のロット毎のばらつきが大きいため、特性の微調整が困難である。これに対し、樹脂材料の注入(射出)圧力は、射出成形機の設定により高精度か容易に調整できるので、予圧縮量の変更による防振脚部50のばね特性の調整を確実に行うことができる。   Moreover, since the amount of pre-compression applied to the vibration isolation leg 50 can be changed by changing the injection pressure of the resin material, the spring of the vibration isolation leg 50 is manufactured when the vibration isolation member 1 is manufactured. Characteristics can be adjusted. That is, when adjusting the characteristics of the anti-vibration legs 50 by changing the characteristics (for example, rubber hardness) of the rubber-like elastic body, fine adjustment of the characteristics is difficult because the rubber hardness varies widely from lot to lot. is there. On the other hand, since the injection (injection) pressure of the resin material can be adjusted with high accuracy or easily by setting the injection molding machine, the adjustment of the spring characteristics of the vibration isolation leg 50 by changing the pre-compression amount is surely performed. Can do.

また、例えば、かかる樹脂材料の注入(射出)圧力を高めることで、空間Sに充填された樹脂材料を、貫通孔61aを通じて、防振脚部50側へ押し込み、かかる樹脂材料が貫通孔61aを貫通しつつ防振脚部50に嵌り込んだ内嵌状態を形成することができる(但し、後述する図13及び図14では、樹脂材料の注入圧力が低い場合の成形状態が図示されている)。よって、このような内嵌状態を形成した場合には、ブラケット部材30からの外側部材60の抜け出しをより確実に防止し得る防振装置1を製造することができる。   Further, for example, by increasing the injection (injection) pressure of the resin material, the resin material filled in the space S is pushed through the through hole 61a toward the vibration isolation leg 50, and the resin material enters the through hole 61a. It is possible to form an internal fitting state that penetrates the vibration isolating leg 50 while penetrating (however, in FIGS. 13 and 14 to be described later, a molding state when the injection pressure of the resin material is low is shown). . Therefore, when such an internal fitting state is formed, the vibration isolator 1 that can more reliably prevent the outer member 60 from coming out of the bracket member 30 can be manufactured.

次いで、図11及び図12を参照して、樹脂成形金型400により第1成形体100をブラケット部材30へインサート成形する際のシール構造について説明する。なお、下型401によるシール構造は、上型402によるシール構造と同様であるため、上型402を例に説明し、下型401についてはその説明を省略する。   Next, with reference to FIG. 11 and FIG. 12, a seal structure when the first molded body 100 is insert-molded into the bracket member 30 by the resin molding die 400 will be described. Since the seal structure by the lower mold 401 is the same as the seal structure by the upper mold 402, the upper mold 402 will be described as an example, and the description of the lower mold 401 will be omitted.

図11及び図12は、第1成形体100がセットされて型締めされた樹脂成形金型400の断面図であり、キャビティC内に樹脂材料が注入される前の状態が図示されている。なお、図11は、図10の拡大図に対応し、図12は、図6(a)のXII−XII線における断面図に対応する。また、図11及び図12では、第2壁覆設ゴム53の表面上に形成されるパーティングラインPLの位置を矢印により図示する。   11 and 12 are cross-sectional views of the resin molding die 400 in which the first molded body 100 is set and clamped, and the state before the resin material is injected into the cavity C is illustrated. 11 corresponds to an enlarged view of FIG. 10, and FIG. 12 corresponds to a cross-sectional view taken along line XII-XII of FIG. Moreover, in FIG.11 and FIG.12, the position of the parting line PL formed on the surface of the 2nd wall covering rubber | gum 53 is illustrated with an arrow.

図11及び図12に示すように、樹脂成形金型400は、第2壁覆設ゴム53のシール面部53aの側面(図11及び図12左側面)を押圧してシールする第1押圧面部402dと、その第1押圧面部402dに連設され第2壁覆設ゴム53のシール面部53aの上面を押圧してシールする第2押圧面部402eと、その第2押圧面部402eとの間に立て壁402fを介して連設され第2壁覆設ゴム53のストッパ面部53bの上面を押圧してシールする第3押圧面部402gとを主に備える。   As shown in FIGS. 11 and 12, the resin molding die 400 includes a first pressing surface portion 402d that presses and seals the side surface (the left side surface in FIGS. 11 and 12) of the sealing surface portion 53a of the second wall covering rubber 53. A vertical wall between the second pressing surface portion 402e and the second pressing surface portion 402e that is connected to the first pressing surface portion 402d and presses and seals the upper surface of the sealing surface portion 53a of the second wall covering rubber 53 It mainly includes a third pressing surface portion 402g that presses and seals the upper surface of the stopper surface portion 53b of the second wall covering rubber 53 that is provided continuously through 402f.

第1押圧面部401dは、シール面部53aの側面(図11及び図12左側面)に平行な平坦面に形成されると共に、内筒部材40の軸心からの距離がシール面部53aの側面よりも短くされている。第2押圧面部402eは、シール面部53aの上面に平行な平坦面に形成され、第3押圧面部402gは、ストッパ面部53bの上面に平行な平坦面に形成されている。これら第2押圧面部402e及び第3押圧面部403gは、下型401における第2押圧面部および第3押圧面部(図示せず)との間の対向間距離(図11及び図12上下方向寸法)が、一対のシール面部53a及び一対のストッパ面部53bの上面の間の対向間距離(図11及び図12上下方向寸法)よりもそれぞれ短くされている。なお、本実施の形態では、第1押圧面部401dが内筒部材40の軸方向に平行に形成される一方、第2押圧面部402e及び第3押圧面部403gが内筒部材40の軸方向に直交して形成されている。   The first pressing surface portion 401d is formed on a flat surface parallel to the side surface (the left side surface in FIGS. 11 and 12) of the seal surface portion 53a, and the distance from the axis of the inner cylinder member 40 is larger than the side surface of the seal surface portion 53a. It has been shortened. The second pressing surface portion 402e is formed on a flat surface parallel to the upper surface of the seal surface portion 53a, and the third pressing surface portion 402g is formed on a flat surface parallel to the upper surface of the stopper surface portion 53b. The second pressing surface portion 402e and the third pressing surface portion 403g have an opposing distance (the vertical dimension in FIGS. 11 and 12) between the second pressing surface portion and the third pressing surface portion (not shown) in the lower mold 401. The distance between the upper surfaces of the pair of seal surface portions 53a and the pair of stopper surface portions 53b (the vertical dimension in FIGS. 11 and 12) is shorter. In the present embodiment, the first pressing surface portion 401d is formed parallel to the axial direction of the inner cylinder member 40, while the second pressing surface portion 402e and the third pressing surface portion 403g are orthogonal to the axial direction of the inner cylinder member 40. Is formed.

よって、樹脂成形工程において、上型402が内筒部材40の軸方向に平行に下降移動され、型締めされると、かかる上型402の第2押圧面部402eが、第2壁覆設ゴム53のシール面部53aの上面を型締め方向(図11及び図12下方)へ向けて押圧する。これにより、樹脂材料が注入されるキャビティCとストッパ面部53bが収容される側の空間Rとを区画できるので、インサート成形時の樹脂材料によるバリの発生を抑制して、ストッパ機能を確保することができる。   Therefore, in the resin molding step, when the upper mold 402 is moved downward in parallel to the axial direction of the inner cylinder member 40 and is clamped, the second pressing surface portion 402e of the upper mold 402 is moved to the second wall covering rubber 53. The upper surface of the seal surface portion 53a is pressed toward the mold clamping direction (downward in FIGS. 11 and 12). Accordingly, since the cavity C into which the resin material is injected and the space R on the side where the stopper surface portion 53b is accommodated can be partitioned, the occurrence of burrs due to the resin material during insert molding is suppressed and the stopper function is ensured. Can do.

即ち、上述した通り、シール面部53aが内筒部材40の軸方向(即ち、型締め方向)に直交する平坦面状に形成され、かかるシール面部53aを上型402の第2押圧面部402eが型締め方向へ押圧するので、これら第2押圧面部402eとシール面部53aとを強固に密着させることができる。よって、キャビティC内に注入された樹脂材料が第2押圧面部402eとシール面部53aとの間に浸入することを抑制して、その分、インサート成形時のバリの発生を抑制できる。   That is, as described above, the seal surface portion 53a is formed in a flat surface shape orthogonal to the axial direction (that is, the mold clamping direction) of the inner cylinder member 40, and the second pressing surface portion 402e of the upper mold 402 is formed by the seal surface portion 53a. Since the pressing is performed in the tightening direction, the second pressing surface portion 402e and the seal surface portion 53a can be firmly adhered to each other. Therefore, the resin material injected into the cavity C can be prevented from entering between the second pressing surface portion 402e and the seal surface portion 53a, and generation of burrs during insert molding can be suppressed accordingly.

なお、このように、第2押圧面部402eとシール面部53aとの密着を強固とすることができれば、その分、樹脂成形金型400の他の押圧面部(第1押圧面部402d及び第3押圧面部402g)と、第1成形体100のシール面部53a及びストッパ面部53bとの寸法精度を緩やかとすることができるので、樹脂成型金型400及びゴム加硫金型300の製造コストを低減することができる。   In addition, if the adhesion between the second pressing surface portion 402e and the seal surface portion 53a can be strengthened in this manner, the other pressing surface portions (the first pressing surface portion 402d and the third pressing surface portion) correspondingly. 402g) and the dimensional accuracy of the sealing surface portion 53a and the stopper surface portion 53b of the first molded body 100 can be moderated, so that the manufacturing cost of the resin molding die 400 and the rubber vulcanizing die 300 can be reduced. it can.

また、ストッパ面部53bは、シール面部53aに段差53cを介して連設され、その段差53cの分だけシール面部53aよりも高さ寸法が大きくされている(内筒部材40の軸方向へ突出されている)ので、仮に、キャビティC内に注入された樹脂材料が第2押圧面部402eとシール面部53aとの間に浸入して、その浸入した樹脂材料がバリとなった場合であっても、ストッパ面部53bのストッパ面(上面側、図11及び図12上側)をバリから段差53cの分だけ離間させることができる。よって、仮にバリが発生したとしても、ストッパ面部53bのストローク(圧縮代)を確保して、そのストッパ機能を発揮させることができる。   Further, the stopper surface portion 53b is connected to the seal surface portion 53a via a step 53c, and the height of the stopper surface portion 53b is larger than that of the seal surface portion 53a by the amount of the step 53c (projects in the axial direction of the inner cylinder member 40). Therefore, even if the resin material injected into the cavity C enters between the second pressing surface portion 402e and the seal surface portion 53a, the intruded resin material becomes a burr. The stopper surface (upper surface side, FIG. 11 and FIG. 12 upper side) of the stopper surface portion 53b can be separated from the burr by the level difference 53c. Therefore, even if burrs occur, the stroke (compression allowance) of the stopper surface portion 53b can be ensured and the stopper function can be exhibited.

この場合、第2押圧面部402eは、樹脂成形金型400の型締め方向視において、外側部材60の第2壁部63の少なくとも一部に重なるように形成されている。即ち、本実施の形態では、上型402の縦壁402fが、第2壁部63の基板部61と反対側(図11及び図12左側)の端部と基板部61との間に位置する。   In this case, the second pressing surface portion 402e is formed so as to overlap at least a part of the second wall portion 63 of the outer member 60 in the mold clamping direction view of the resin molding die 400. That is, in the present embodiment, the vertical wall 402f of the upper mold 402 is located between the end of the second wall 63 opposite to the substrate 61 (on the left side in FIGS. 11 and 12) and the substrate 61. .

これにより、上型402が型締めされ、かかる上型402の第2押圧面部402eが、第2壁覆設ゴム53のシール面部53aの上面を型締め方向(図11及び図12下方)へ向けて押圧する場合には、外側部材60(第2壁部63)の少なくとも一部に重なる領域を押圧するので、第2押圧面部402eにより押圧されたシール面部53aを、その背面側(図11及び図12下側)から金属材料から構成される外側部材60に支持させることができる。これにより、第2押圧面部402eとシール面部53aとの密着をより強固とすることができるので、キャビティC内に注入された樹脂材料が第2押圧面部402eとシール面部53aとの間に浸入することを抑制でき、その分、インサート成形時のバリの発生をより確実に抑制できる。   As a result, the upper die 402 is clamped, and the second pressing surface portion 402e of the upper die 402 faces the upper surface of the seal surface portion 53a of the second wall covering rubber 53 in the clamping direction (downward in FIGS. 11 and 12). In the case of pressing, the region that overlaps at least a part of the outer member 60 (second wall 63) is pressed, so that the seal surface portion 53a pressed by the second pressing surface portion 402e is moved to the back side (FIG. 11 and FIG. 11). The outer member 60 made of a metal material can be supported from the lower side of FIG. Thereby, since the close contact between the second pressing surface portion 402e and the sealing surface portion 53a can be further strengthened, the resin material injected into the cavity C enters between the second pressing surface portion 402e and the sealing surface portion 53a. This can be suppressed, and the generation of burrs during insert molding can be more reliably suppressed.

また、本実施の形態では、樹脂成形金型400が型締めされると、第1押圧面部402dも、第2壁覆設ゴム53のシール面部53aの側面(図11及び図12左側面)を押圧する。よって、第2押圧面部402eの側面においてシールすることができるので、かかるシールにより、キャビティC内に注入された樹脂材料が、第2押圧面部402eとシール面部53aの上面との間まで到達することをより確実に抑制できる。その結果、インサート成形時のバリの発生によりストッパ機能が阻害されることをより確実に抑制することができる。   In the present embodiment, when the resin molding die 400 is clamped, the first pressing surface portion 402d also has the side surface (the left side surface in FIGS. 11 and 12) of the sealing surface portion 53a of the second wall covering rubber 53. Press. Therefore, since the sealing can be performed on the side surface of the second pressing surface portion 402e, the resin material injected into the cavity C reaches the space between the second pressing surface portion 402e and the upper surface of the sealing surface portion 53a. Can be suppressed more reliably. As a result, it is possible to more reliably suppress the stopper function from being hindered by the occurrence of burrs during insert molding.

一方で、第1押圧面部402dは、シール面部53aの側面(図11及び図12左側面)の全領域を押圧するのではなく、少なくともパーティングラインPLよりもシール面部53aの上面側(図11及び図12上側面)に位置する領域のみを押圧する。これにより、樹脂成形工程において、第1成形体100がブラケット部材30にインサート成形されると、パーティングラインPLを樹脂で覆う(ブラケット部材30内に埋設する)ことができる。その結果、防振装置100の外観からパーティングラインPLを隠すことができ、製品の美観を高めることができると共に、パーティングラインPLが基点となり第1成形体100に亀裂が発生することを抑制できる。   On the other hand, the first pressing surface portion 402d does not press the entire region of the side surface (the left side surface in FIGS. 11 and 12) of the sealing surface portion 53a, but at least the upper surface side of the sealing surface portion 53a from the parting line PL (FIG. 11). And only the area | region located in FIG. Thereby, in the resin molding step, when the first molded body 100 is insert-molded into the bracket member 30, the parting line PL can be covered with the resin (embedded in the bracket member 30). As a result, the parting line PL can be hidden from the appearance of the vibration isolator 100, and the appearance of the product can be enhanced, and cracking of the first molded body 100 can be suppressed by using the parting line PL as a base point. it can.

ここで、本実施の形態では、樹脂成形金型400が、第2押圧面部402e及び第3押圧面部402gを連設する縦壁402fと、シール面部53a及びストッパ面部53bを連設する段差53cとの間に空間としての隙間Tを有するように形成されている。これにより、型締め時に、第1押圧面部402d及び第2押圧面部402eによりシール面部53aが押圧されることで押し出されるゴム状弾性体の余肉を、縦壁402fと段差53cとの間の隙間Tに逃がして吸収させることができる。   Here, in the present embodiment, the resin molding die 400 includes a vertical wall 402f that continuously connects the second pressing surface portion 402e and the third pressing surface portion 402g, and a step 53c that continuously connects the seal surface portion 53a and the stopper surface portion 53b. Are formed so as to have a gap T as a space. Thereby, during mold clamping, the extra space of the rubber-like elastic body pushed out by pressing the sealing surface portion 53a by the first pressing surface portion 402d and the second pressing surface portion 402e is removed between the vertical wall 402f and the step 53c. It can be absorbed by T.

このように、余肉を逃がすことで、第1押圧面部402d及び第2押圧面部402eとシール面部53aとを、余肉により阻害されることなく、密着させることができる。その結果、キャビティC内に注入された樹脂材料が第1押圧面部402d及び第2押圧面部402eとシール面部53aとの間に浸入することを抑制できるので、その分、インサート成形時のバリの発生をより確実に抑制できる。   Thus, by letting out the surplus, the first pressing surface portion 402d, the second pressing surface portion 402e, and the seal surface portion 53a can be brought into close contact with each other without being hindered by the surplus. As a result, the resin material injected into the cavity C can be prevented from entering between the first pressing surface portion 402d and the second pressing surface portion 402e and the seal surface portion 53a, and accordingly, burrs are generated during insert molding. Can be suppressed more reliably.

以上のように構成された防振装置1の詳細構成について、図13及び図14を参照して説明する。図13及び図14は、防振装置1の部分断面図であり、それぞれ図7(a)及び図7(b)に示す断面に対応する。なお、図13では、防振装置1が車両へ組み付けられた際に第2壁覆設ゴム53に対向配置される相手部品500が図示されている。また、図14では、防振装置1の一部が部分的に拡大図示され、かかる拡大部分では、図面を簡素化するために、ブラケット部材30及び各覆設ゴム51,52の断面線の図示が省略されている。   A detailed configuration of the vibration isolator 1 configured as described above will be described with reference to FIGS. 13 and 14. 13 and 14 are partial cross-sectional views of the vibration isolator 1, and correspond to the cross-sections shown in FIGS. 7 (a) and 7 (b), respectively. Note that FIG. 13 illustrates a counterpart component 500 that is disposed to face the second wall covering rubber 53 when the vibration isolator 1 is assembled to a vehicle. Further, in FIG. 14, a part of the vibration isolator 1 is partially enlarged, and in this enlarged part, the sectional lines of the bracket member 30 and the covering rubbers 51 and 52 are shown in order to simplify the drawing. Is omitted.

図13及び図14に示すように、防振脚部50の他端側(図13及び図14左側)が基板部61の背面側に加硫接着され、その基板部61の外縁からは、ブラケット部材30へ向けて(即ち、防振脚部50と反対側へ向けて)、一対の第1壁部62が末広がり状に延設されると共に、一対の第2壁部63が平行を保ちつつ延設され、これら第1壁部62及び第2壁部63が周方向に(即ち、基板部61の外縁に沿って)連結されつつ、ブラケット部材30に埋設されている。   As shown in FIGS. 13 and 14, the other end side (left side of FIGS. 13 and 14) of the anti-vibration leg portion 50 is vulcanized and bonded to the back side of the substrate portion 61. A pair of first wall portions 62 are extended toward the member 30 (that is, toward the side opposite to the anti-vibration legs 50), and the pair of second wall portions 63 are kept parallel to each other. The first wall portion 62 and the second wall portion 63 are extended and are embedded in the bracket member 30 while being connected in the circumferential direction (that is, along the outer edge of the substrate portion 61).

よって、ブラケット部材30に対する外側部材60の車両左右方向(矢印L,R方向、図13上下方向)の移動については、一対の第2壁部63とそれら一対の第2壁部63の対向間に内嵌されたブラケット部材30の被内嵌部分との係合により、規制することができる。   Therefore, with respect to the movement of the outer member 60 in the left-right direction of the vehicle with respect to the bracket member 30 (arrows L and R directions, the vertical direction in FIG. 13), between the pair of second wall parts 63 and the pair of second wall parts 63 facing each other It can regulate by engagement with the fitted part of the bracket member 30 fitted inside.

また、ブラケット部材30に対する外側部材60の車両上下方向(矢印U,D方向、図14上下方向)の移動については、一対の第1壁部62とそれら一対の第1壁部62の対向間に内嵌されたブラケット部材30の被内嵌部分との係合、及び、一対の第1壁部62とそれら一対の第1壁部62を狭持するブラケット部材30の狭持部分との係合により、規制することができる。   Further, regarding the movement of the outer member 60 with respect to the bracket member 30 in the vehicle vertical direction (arrow U, D direction, vertical direction in FIG. 14), the pair of first wall portions 62 and the pair of first wall portions 62 are opposed to each other. Engagement with the internally fitted portion of the bracket member 30 that is internally fitted, and engagement between the pair of first wall portions 62 and the holding portion of the bracket member 30 that holds the pair of first wall portions 62 Can be regulated.

更に、ブラケット部材30に対する外側部材60の車両前後方向(矢印F,B方向、図14左右方向)であって、ブラケット部材30から抜け出る方向(図14右方向)への外側部材60の移動については、一対の第1壁部62とそれら一対の第1壁部62の外面側に突出するブラケット部材30の突出部分(即ち、図14において範囲Lで示す部分)との係合により、規制することができる。   Further, regarding the movement of the outer member 60 in the vehicle front-rear direction of the outer member 60 with respect to the bracket member 30 (arrows F and B directions, right and left directions in FIG. 14) and in the direction of exiting from the bracket member 30 (right direction in FIG. 14). And restricting by engagement between the pair of first wall portions 62 and the protruding portion of the bracket member 30 protruding to the outer surface side of the pair of first wall portions 62 (that is, the portion indicated by the range L in FIG. 14). Can do.

このように、外側部材60とブラケット部材30との車両前後方向における係合は、外側部材60の一対の第1壁部62をブラケット部材30に埋設させることで達成する構造であるので、外側部材60を係合するためにブラケット部材30を防振脚部50へ向けて張り出させる必要がなく、従来品のようにアンダーカット形状が形成されることを抑制することができる。よって、ブラケット部材30を成形する樹脂成形金型400の構造の簡素化を図ることができる。   As described above, since the engagement of the outer member 60 and the bracket member 30 in the vehicle front-rear direction is a structure achieved by embedding the pair of first wall portions 62 of the outer member 60 in the bracket member 30, the outer member It is not necessary to project the bracket member 30 toward the antivibration leg portion 50 in order to engage 60, and it is possible to suppress the formation of an undercut shape as in the conventional product. Therefore, the structure of the resin molding die 400 for molding the bracket member 30 can be simplified.

また、防振装置1は、ブラケット部材30に対する外側部材60の移動を各方向において規制することができるので、内筒部材40がいずれの方向へ変位しても、外側部材60とブラケット部材30との係合状態を保ち、かかる外側部材60がブラケット部材30から抜け出ることを防止することができる。   Moreover, since the vibration isolator 1 can regulate the movement of the outer member 60 with respect to the bracket member 30 in each direction, the outer member 60 and the bracket member 30 can be moved regardless of which direction the inner cylinder member 40 is displaced. Thus, the outer member 60 can be prevented from coming out of the bracket member 30.

ここで、外側部材60は、ブラケット部材30に対する移動を各方向において規制可能としつつ、その製造を簡易に行うことができる。即ち、外側部材60は、板状の基板部61の外縁から板状の第1及び第2壁部62,63が一方へ向けて延設される形状(いわゆる容器形状)に形成されているので、1枚の平らな素板にパンチとダイとを用いてプレス加工機により絞り加工を施すことで、簡易に製造することができる。従って、外側部材60の製造コストを低減して、その分、防振装置1全体としての製品コストを低減することができる。   Here, the outer member 60 can be easily manufactured while the movement with respect to the bracket member 30 can be restricted in each direction. That is, the outer member 60 is formed in a shape (so-called container shape) in which the plate-like first and second wall portions 62 and 63 extend from the outer edge of the plate-like substrate portion 61 toward one side. A single flat base plate can be easily manufactured by drawing with a press machine using a punch and a die. Therefore, the manufacturing cost of the outer member 60 can be reduced, and the product cost of the vibration isolator 1 as a whole can be reduced accordingly.

この場合、第1壁部62と第2壁部63とは、その端部同士が連結される、即ち、周方向に連続して形成されているので、それら各壁部62,63の曲げ方向(基板部61に対して揺動する方向)の強度を高めることができる。よって、その分、外側部材60の板厚を小さくすることができるので、材料コストの低減を図ることができると共に、軽量化を図ることができる。   In this case, since the end portions of the first wall portion 62 and the second wall portion 63 are connected to each other, that is, formed continuously in the circumferential direction, the bending direction of each of the wall portions 62 and 63 is determined. The strength in the direction of swinging with respect to the substrate unit 61 can be increased. Therefore, the plate thickness of the outer member 60 can be reduced correspondingly, so that the material cost can be reduced and the weight can be reduced.

また、上述した通り、第2壁部63を覆う第2壁覆設ゴム53は、ストッパ面部53bがブラケット部材30の外面から相手部品500側へ突出して形成されているので、かかる第2壁覆設ゴム53のストッパ面部53bを、相手部品500に当接してその変位を規制するストッパ部として利用できる。この場合、第2壁覆設ゴム53には、一対が平行配置される平板状の第2壁部63がストッパ面部53bの近傍に埋設されているので、相手部品500が当接される際の衝撃力を第2壁部63で受け止めて、ブラケット部材30の負担を軽減することができる。これにより、ブラケット部材30が樹脂材料から形成される場合であっても、その耐久性の向上を図ることができる。   Further, as described above, the second wall covering rubber 53 covering the second wall portion 63 is formed so that the stopper surface portion 53b protrudes from the outer surface of the bracket member 30 to the counterpart component 500 side. The stopper surface portion 53b of the installation rubber 53 can be used as a stopper portion that abuts against the counterpart component 500 and restricts its displacement. In this case, the second wall covering rubber 53 is embedded with a flat plate-like second wall portion 63 arranged in parallel in the vicinity of the stopper surface portion 53b. The impact force can be received by the second wall 63 and the burden on the bracket member 30 can be reduced. Thereby, even if it is a case where the bracket member 30 is formed from a resin material, the improvement of the durability can be aimed at.

更に、第2壁部63は、上述したように、その端部が第1壁部62の端部と連結され、曲げ方向の強度が高められているので、相手部品500が当接される際の衝撃力を強固に受け止めることができると共に、外側部材60自体だけでなくブラケット部材30の耐久性も向上させることができる。   Further, as described above, the end of the second wall 63 is connected to the end of the first wall 62 and the strength in the bending direction is increased. The impact force of the bracket member 30 as well as the outer member 60 itself can be improved.

次いで、図15を参照して、第2及び第3実施の形態について説明する。図15(a)は、第2実施の形態における外側部材2060の断面図であり、図15(b)は、第3実施の形態における外側部材3060の断面図である。なお、図15(a)及び図15(b)は、図3(a)のIVa−IVa線における外側部材の断面図に対応する。   Next, the second and third embodiments will be described with reference to FIG. FIG. 15A is a cross-sectional view of the outer member 2060 in the second embodiment, and FIG. 15B is a cross-sectional view of the outer member 3060 in the third embodiment. 15A and 15B correspond to cross-sectional views of the outer member taken along line IVa-IVa in FIG.

第1実施の形態では、外側部材60の第2壁部63に正面視円形の孔63aが穿設される場合を説明したが、第2及び第3実施の形態における外側部材2060,3060の第2壁部2063,3063には、正面視長円形および正面視台形の孔2063a,3063aが穿設されている。なお、上述した第1実施の形態と同一の部分には同一の符号を付して、その説明は省略する。   In the first embodiment, the case where the second wall 63 of the outer member 60 has the circular hole 63a in front view has been described. However, the outer members 2060 and 3060 in the second and third embodiments The two walls 2063 and 3063 are formed with holes 2063a and 3063a having an oblong shape and a trapezoidal shape when viewed from the front. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the description is abbreviate | omitted.

図15(a)及び図15(b)に示すように、第2壁部2063,3063は、第1実施の形態における第2壁部63に対応し、一対が平行を保ちつつ対向配置される平板状の部位である。第2壁部2063には、正面視長円形の孔2063aが各第2壁部2063に対して1箇所ずつ合計2箇所に穿設される。同様に、第2壁部3063には、正面視台形の孔3063aが各第2壁部3063に対して1箇所ずつ合計2箇所に穿設される。   As shown in FIGS. 15A and 15B, the second wall portions 2063 and 3063 correspond to the second wall portion 63 in the first embodiment, and a pair of the second wall portions 2063 and 3063 are arranged to face each other while being kept parallel. It is a flat part. The second wall portion 2063 is formed with two holes 2063a that are oblong in front view, one for each second wall portion 2063 in total. Similarly, a trapezoidal hole 3063a in front view is formed in the second wall portion 3063 at a total of two locations, one for each second wall portion 3063.

これら各孔2063a,3063aは、図15(a)及び図15(b)に示すように、一対の第1壁部62の内の一方の第1壁部62側(図15(a)及び図15(b)の左側)に偏った位置に配置されている。また、第2壁部2063,3063には、膨出部が外縁から膨出形成されており、この膨出部によって各孔2063a,3063aが取り囲まれている。   As shown in FIGS. 15A and 15B, each of the holes 2063a and 3063a has a first wall 62 side of the pair of first wall portions 62 (see FIGS. 15A and 15B). 15 (b) on the left side). Further, the second wall portions 2063 and 3063 are formed with a bulging portion bulging from the outer edge, and each of the holes 2063a and 3063a is surrounded by the bulging portion.

ここで、一対の第2壁部2063及び一対の第2壁部3063は、孔2063a,3063の配置も含め、それぞれ互いに同じ形状に形成されている。そのため、外側部材2060,3060は、第1実施の形態の場合と同様に、防振装置1(第1成形体100)の左右いずれにも共通に使用することができる。   Here, the pair of second wall portions 2063 and the pair of second wall portions 3063 are formed in the same shape, including the arrangement of the holes 2063a and 3063. Therefore, the outer members 2060 and 3060 can be used in common on both the left and right sides of the vibration isolator 1 (first molded body 100) as in the case of the first embodiment.

なお、ゴム加硫金型および樹脂成形金型は、ゴム下型ピン、ゴム上型ピン、樹脂下型ピン及び樹脂上型ピンの外形が各孔2063a,3063aに対応する形状(即ち、断面長円形または断面台形)に形成されており、これら各ピンが各孔2063a,3063aに挿入されることで、外側部材2060,3060が所定位置に位置決めされる。   It should be noted that the rubber vulcanizing mold and the resin molding mold are shaped so that the outer shapes of the lower rubber pin, the upper rubber mold pin, the lower resin mold pin and the upper resin mold pin correspond to the holes 2063a and 3063a (that is, the cross-sectional length The outer members 2060 and 3060 are positioned at predetermined positions by inserting the pins into the holes 2063a and 3063a.

また、ゴム下型座部、ゴム上型座部、樹脂下型座部および樹脂下型座部は、各ピンよりも大きな外形であって、かつ、膨出部よりも小さな外形(即ち、第2壁部2063,3063の外面内に収まる形状)に形成され、各ピンとの間に形成された平坦面状の段差面が第2壁部2063,3063の外面に当接して支持する座面とされている。   The rubber lower mold seat, the rubber upper mold seat, the resin lower mold seat, and the resin lower mold seat have an outer shape larger than each pin and smaller than the bulge portion (that is, the first mold seat). A flat stepped surface formed between each pin and the outer surface of the second wall portions 2063 and 3063 and supporting the outer surface of the second wall portions 2063 and 3063. Has been.

よって、第2及び第3実施の形態においても、第1実施の形態の場合と同様に、外側部材2060,3060をゴム加硫金型へセットする際の作業不良(設置不良)を抑制することができる。また、外側部材2060,3060を下型にセットした状態では、かかる外側部材2060,3060の回転を規制することができるので、上型を下型に型締めする際に、各ゴム上型ピンを各孔2063a,3063aへ確実に挿入させることができる。   Therefore, also in the second and third embodiments, as in the case of the first embodiment, it is possible to suppress the work failure (setting failure) when setting the outer members 2060 and 3060 to the rubber vulcanization mold. Can do. Further, in a state where the outer members 2060 and 3060 are set in the lower mold, the rotation of the outer members 2060 and 3060 can be restricted. Therefore, when clamping the upper mold to the lower mold, The holes 2063a and 3063a can be reliably inserted.

また、第1実施の形態における場合と同様に、一対の第2壁部2063,3063のそれぞれの各孔2063a,3063aに各ピンがそれぞれ挿通されることで、ゴム状弾性体を介して作用する加硫圧力による外側部材2060,3060の変形を抑制することができる。   Similarly to the case of the first embodiment, each pin is inserted into each hole 2063a, 3063a of the pair of second wall portions 2063, 3063, thereby acting via a rubber-like elastic body. Deformation of the outer members 2060 and 3060 due to the vulcanization pressure can be suppressed.

更に、第1実施の形態の場合と同様に、第2壁覆設ゴムの四隅に凹部を形成せずに第1成形体を形成することができるので、樹脂成形工程におけるシール性の確保を容易とすることができる。よって、樹脂成形金型の構造や形状を簡素化して、その製造コストの低減を図ることができる。   Further, as in the case of the first embodiment, since the first molded body can be formed without forming the recesses at the four corners of the second wall covering rubber, it is easy to ensure the sealing performance in the resin molding process. It can be. Therefore, the structure and shape of the resin molding die can be simplified, and the manufacturing cost can be reduced.

また、第1実施の形態の場合と同様に、外側部材2060,3060の各孔2063a,3063aを各ピンにより係止する金型構造とすることで、四隅を支持する構造の場合と比較して、外側部材2060,3060のゴム加硫金型に対する位置精度を向上させることができ、内筒部材40や防振脚部50との相対位置精度を向上させることができるので、防振装置の静的および動的な特性の安定化を図ることができる。   Further, as in the case of the first embodiment, the holes 2063a and 3063a of the outer members 2060 and 3060 are formed by a mold structure that is locked by the pins, so that it is compared with the structure that supports the four corners. Further, the positional accuracy of the outer members 2060 and 3060 with respect to the rubber vulcanizing mold can be improved, and the relative positional accuracy with respect to the inner cylinder member 40 and the anti-vibration legs 50 can be improved. Stabilization of dynamic and dynamic characteristics can be achieved.

以上、実施の形態に基づき本発明を説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能であることは容易に推察できるものである。   The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

上記各実施の形態で挙げた数値は一例であり、他の数値を採用することは当然可能である。例えば、上記第1実施の形態では、孔63aを一対の第2壁部63の合計4箇所に穿設する場合を説明したが、合計3箇所以下であっても良く、或いは、合計5箇所以上であっても良い。例えば、一対の第2壁部63の一方には2箇所に、他方には1箇所に穿設する構成でも良い。最小の配設個数により、外側部材60のゴム加硫工程における回転および倒れを確実に防止できるからである。第2及び第3実施の形態についても同様であり、各孔2063a,3063aの配設個数は任意に設定することができる。   The numerical values given in the above embodiments are merely examples, and other numerical values can naturally be adopted. For example, in the first embodiment, the case where the holes 63a are formed in a total of four locations of the pair of second wall portions 63 has been described. However, the total number may be three or less, or a total of five or more locations. It may be. For example, a configuration in which one of the pair of second wall portions 63 is drilled in two places and the other in one place may be employed. This is because the minimum arrangement number can reliably prevent the outer member 60 from rotating and falling in the rubber vulcanization process. The same applies to the second and third embodiments, and the number of holes 2063a and 3063a can be arbitrarily set.

なお、上記各実施の形態のように、一対の第2壁部63,2063,3063のそれぞれに形成する孔63a,2063a,3063aの配設個数を同数とすることで、絞り加工や穴あけ加工を対称に行い得るようにして、その加工精度の向上を図ることができる。   As in the above embodiments, the number of holes 63a, 2063a, 3063a formed in each of the pair of second wall parts 63, 2063, 3063 is the same, so that drawing and drilling can be performed. The processing accuracy can be improved so that the processing can be performed symmetrically.

上記各実施の形態では、外側部材60,2060,3060を、1枚の平らな素板からプレス加工機を用いた絞り加工によりプレス成形する場合を説明したが、必ずしもこれに限られるものではなく、他の成形方法を採用することは当然可能である。   In each of the above-described embodiments, the case where the outer members 60, 2060, 3060 are press-molded from one flat base plate by drawing using a press machine is not necessarily limited thereto. Of course, it is possible to adopt other molding methods.

なお、他の成形方法としては、例えば、複数の板材料を溶接固定して成形する方法や直方体の素材から切削可能による削り出しにより成形する方法などが例示される。この場合、外側部材は、上記各実施の形態のように、容器形状である必要はない。例えば、先端へ向かうほど末広がりとなる(即ち、先端へ向かうほど断面積が大きくなる)棒状体の基部を基板部61の正面(防振脚部50が連結される背面の反対側)に固着(例えば、溶接固定)し、かかる棒状体をブラケット部材30に埋設しても良い。これによっても、ブラケット部材30に対する外側部材の各方向への移動を規制して、その抜け出しを防止することができる。   Examples of other forming methods include a method of forming a plurality of plate materials by welding and fixing, a method of forming by cutting out from a rectangular parallelepiped material, and the like. In this case, the outer member does not need to have a container shape as in the above embodiments. For example, the base of the rod-shaped body that becomes wider toward the tip (that is, the cross-sectional area becomes larger toward the tip) is fixed to the front surface of the substrate 61 (opposite to the back surface to which the antivibration legs 50 are connected) ( For example, the rod-shaped body may be embedded in the bracket member 30 by welding. Also by this, the movement of the outer member in each direction with respect to the bracket member 30 can be restricted, and the removal thereof can be prevented.

また、上記各実施の形態では、対向する一対の第1壁部62の全体が基板部61から離間するに従って末広がり状に延設される(即ち、一対の第1壁部62の全体がその対向間隔を拡大させる)場合を説明したが、必ずしもこれに限られるものではなく、一対の第1壁部62の少なくとも一部がブラケット部材30に係合可能であれば良い。なお、係合可能とは、第1壁部62がブラケット部材30内から抜き取られる方向へ外側部材60が変位する場合に、第1壁部62の抜き取り方向への移動がブラケット部材30の樹脂材料により規制されることを意味する。従って、例えば、一対の第1壁部62は、基板部61側(図4(a)右側)の部分が互いに平行に形成され、残りの部分(基板部61と反対側の部分、図4(a)左側)のみが末広がり状(対向間隔が漸次大きくなる形状)に形成されていても良い。或いは、一対の第1壁部62は、互いに平行に形成され第2壁部63と同じ高さ位置まで延設される部位と、その部位の延設端(図4(a)左側端)から外方または内方へ向けて折り返されるフランジ状の部位とを有して形成されていても良い。いずれの形状であっても、ブラケット部材30と係合可能になるからである。   Further, in each of the above-described embodiments, the entire pair of opposing first wall portions 62 are extended in a divergent shape as they are separated from the substrate portion 61 (that is, the entire pair of first wall portions 62 are opposed to each other). However, the present invention is not necessarily limited to this, and it is sufficient that at least a part of the pair of first wall portions 62 can be engaged with the bracket member 30. Note that “engageable” means that when the outer member 60 is displaced in the direction in which the first wall 62 is extracted from the bracket member 30, the movement of the first wall 62 in the extraction direction is the resin material of the bracket member 30. It means that it is regulated by. Therefore, for example, in the pair of first wall portions 62, the portions on the substrate portion 61 side (right side in FIG. 4A) are formed in parallel with each other, and the remaining portions (portions opposite to the substrate portion 61, FIG. a) Only the left side) may be formed in a divergent shape (a shape in which the facing interval gradually increases). Alternatively, the pair of first wall portions 62 are formed in parallel to each other and extended from the same height position as the second wall portion 63 and the extended end of the portion (the left end in FIG. 4A). It may be formed having a flange-like portion that is folded outward or inward. This is because any shape can be engaged with the bracket member 30.

また、上記各実施の形態では、一対の第1壁部62と一対の第2壁部63との端部同士が連結される(周方向に連続して形成される)場合を説明したが、必ずしもこれに限られるものではなく、これら第1壁部62及び第2壁部63の端部同士の一部または全部を連結せずに形成することは当然可能である。   In each of the above embodiments, the case where the ends of the pair of first wall portions 62 and the pair of second wall portions 63 are connected to each other (formed continuously in the circumferential direction) has been described. The present invention is not necessarily limited to this, and it is naturally possible to form the first wall portion 62 and the second wall portion 63 without connecting part or all of the end portions thereof.

上記各実施の形態では、基板部61に貫通孔61aを貫通形成する場合を説明したが、必ずしもこれに限られるものではなく、かかる貫通孔61aの形成を省略しても良い。また、貫通孔61aの形状は、正面視矩形状である必要はなく、円形や楕円形などの曲線形状であっても良く、或いは、三角形や五角形以上の多角形であっても良い。また、その配設個数も任意の個数を設定できる。   In each of the above embodiments, the case where the through hole 61a is formed through the substrate 61 has been described. However, the present invention is not necessarily limited to this, and the formation of the through hole 61a may be omitted. The shape of the through hole 61a does not have to be a rectangular shape when viewed from the front, and may be a curved shape such as a circle or an ellipse, or may be a triangle or a polygon more than a pentagon. Moreover, the arrangement | positioning number can also set arbitrary numbers.

また、上記各実施の形態では、外側部材60,2060,3060を防振脚部50の他端側に埋設する場合を説明したが、必ずしもこれに限られるものではなく、かかる外側部材60,2060,3060の埋設を省略しても良い。即ち、ゴム加硫工程において、内筒部材40のみをゴム加硫金型300にセットし、外側部材60を省略した状態で第1成形体100を加硫成形し、次いで、その第1成形体100を樹脂成形金型400にセットしインサート成形することで、防振装置1を製造しても良い。   Further, in each of the above embodiments, the case where the outer member 60, 2060, 3060 is embedded in the other end side of the antivibration leg portion 50 has been described. However, the present invention is not necessarily limited thereto, and the outer member 60, 2060 is not necessarily limited thereto. , 3060 may be omitted. That is, in the rubber vulcanization step, only the inner cylinder member 40 is set in the rubber vulcanization mold 300, and the first molded body 100 is vulcanized and molded with the outer member 60 omitted, and then the first molded body. The vibration isolator 1 may be manufactured by setting 100 in the resin mold 400 and insert molding.

この場合、ゴム下型ピン301bや樹脂下型ピン401bなどの各ピン301b,302b,401b,402b、及び、ゴム下型座部301cや樹脂下型座部401cなどの各座部301c,302c,401c,402cは省略する。この場合であっても、防振脚部50の他端側に窪んで形成される空間S(図10参照)へのブラケット部材30の内嵌および第1壁覆設ゴム652の傾斜によるブラケット部材30への係合(図14参照)により、ブラケット部材30から防振脚部50が抜け出ることを、外側部材60が埋設される場合と同様に、抑制することができる。   In this case, the pins 301b, 302b, 401b, 402b such as the rubber lower mold pin 301b and the resin lower mold pin 401b, and the seat portions 301c, 302c, such as the rubber lower mold seat portion 301c and the resin lower mold seat portion 401c, 401c and 402c are omitted. Even in this case, the bracket member 30 is fitted into the space S (see FIG. 10) formed in the other end side of the vibration isolating leg 50 and the bracket is formed by the inclination of the first wall covering rubber 652. Due to the engagement with 30 (see FIG. 14), the vibration-proof leg portion 50 can be prevented from coming out of the bracket member 30 as in the case where the outer member 60 is embedded.

また、上記各実施の形態では、第1押圧面部402dを設ける場合を説明したが、必ずしもこれに限られるものではなく、第1押圧面部402dの形成を省略しても良い。即ち、図11及び図12において、第2押圧面部402eとキャビティCの上面(図11及び図12上側面)とを面一に形成しても良い。或いは、キャビティCの上面を第2押圧面部402eと第3押圧面部402gとの間の高さ位置としても良い。   In each of the above embodiments, the case where the first pressing surface portion 402d is provided has been described. However, the present invention is not necessarily limited thereto, and the formation of the first pressing surface portion 402d may be omitted. That is, in FIG.11 and FIG.12, you may form the 2nd press surface part 402e and the upper surface (FIG.11 and FIG.12 upper side surface) of the cavity C flush. Or it is good also considering the upper surface of the cavity C as the height position between the 2nd press surface part 402e and the 3rd press surface part 402g.

同様に、上記各実施の形態では、第3押圧面部402gを設ける場合を説明したが、必ずしもこれに限られるものではなく、第3押圧面部402gの形成を省略しても良い。即ち、型締め時に、第3押圧面部402gとストッパ面53bの上面(図11及び図12上側面)との間に隙間を有するように構成しても良い。   Similarly, in each of the above embodiments, the case where the third pressing surface portion 402g is provided has been described. However, the present invention is not necessarily limited thereto, and the formation of the third pressing surface portion 402g may be omitted. That is, a configuration may be adopted in which a gap is provided between the third pressing surface portion 402g and the upper surface of the stopper surface 53b (upper side surfaces in FIGS. 11 and 12) during mold clamping.

また、上記各実施の形態では、縦壁402fと段差53cとの間に隙間Tを設ける場合を説明したが(図11及び図12参照)、必ずしもこれに限られるものではなく、かかる隙間Tを設けず、縦壁402fが段差53cを押圧するように構成しても良い。   In each of the above embodiments, the case where the gap T is provided between the vertical wall 402f and the step 53c has been described (see FIGS. 11 and 12). However, the present invention is not necessarily limited to this, and the gap T is not limited to this. Instead, the vertical wall 402f may be configured to press the step 53c.

1 防振装置
30 ブラケット部材
31 内挿孔
40 内筒部材
50 防振脚部
53 第2壁覆設ゴム(突出ゴム部)
53a シール面部
53b ストッパ面部
53c 段差
60,2060,3060 外側部材
100 第1成形体
300 ゴム加硫金型
400 樹脂成形金型
402e 第2押圧面部(押圧面部)
402f 縦壁
R 空間(ストッパ面部が収容される空間)
C キャビティ
T 隙間
DESCRIPTION OF SYMBOLS 1 Anti-vibration apparatus 30 Bracket member 31 Inner insertion hole 40 Inner cylinder member 50 Anti-vibration leg part 53 2nd wall covering rubber (projection rubber part)
53a Seal surface portion 53b Stopper surface portion 53c Steps 60, 2060, 3060 Outer member 100 First molded body 300 Rubber vulcanizing mold 400 Resin molding die 402e Second pressing surface portion (pressing surface portion)
402f Vertical wall R space (space in which the stopper surface portion is accommodated)
C Cavity T Clearance

Claims (4)

振動発生体側または車体側の一方に取着される筒状の内筒部材と、前記内筒部材が内挿配置される内挿孔を有し樹脂材料からなると共に前記振動発生体側または車体側の他方に取着されるブラケット部材と、前記内筒部材の外周面に一端側が連結されると共に他端側が前記ブラケット部材の内挿孔の内周側にインサート成形により連結されゴム状弾性体からなる一対の防振脚部と、を備える防振装置であって、
前記防振脚部は、前記ブラケット部材の内挿孔の内周側にインサート成形された前記他端側の側面に形成されると共に前記ブラケット部材の外面から突出される突出ゴム部を備え、
前記突出ゴム部は、外縁側に位置する平坦面状のシール面部と、前記シール面部に段差を介して連設され前記段差の分だけ前記シール面部よりも突出されるストッパ面部とを備え、
前記防振脚部の他端側は、樹脂成形金型の押圧面部が前記突出ゴム部のシール面部を押圧することで、前記樹脂材料が注入されるキャビティと前記突出ゴム部のストッパ面部が収容される空間とを区画した状態で、前記ブラケット部材の内挿孔の内周側にインサート成形されたものであることを特徴とする防振装置。
A cylindrical inner cylinder member attached to one of the vibration generator side or the vehicle body side, and an insertion hole into which the inner cylinder member is inserted and arranged, are made of a resin material, and are arranged on the vibration generator side or the vehicle body side. One end side is connected to the bracket member attached to the other and the outer peripheral surface of the inner cylinder member, and the other end side is connected to the inner peripheral side of the insertion hole of the bracket member by insert molding and is made of a rubber-like elastic body. A vibration isolator comprising a pair of vibration isolator legs,
The anti-vibration leg portion includes a protruding rubber portion that is formed on the side surface on the other end side that is insert-molded on the inner peripheral side of the insertion hole of the bracket member and protrudes from the outer surface of the bracket member,
The protruding rubber part includes a flat surface-shaped sealing surface part located on the outer edge side, and a stopper surface part that is connected to the sealing surface part via a step and protrudes from the sealing surface part by the step.
The other end side of the anti-vibration leg is accommodated in the cavity into which the resin material is injected and the stopper surface portion of the protruding rubber portion by the pressing surface portion of the resin molding die pressing the seal surface portion of the protruding rubber portion. An anti-vibration device that is insert-molded on the inner peripheral side of the insertion hole of the bracket member in a state in which the space is defined.
振動発生体側または車体側の一方に取着される筒状の内筒部材と、前記内筒部材が内挿配置される内挿孔を有し樹脂材料からなると共に前記振動発生体側または車体側の他方に取着されるブラケット部材と、前記内筒部材の外周面に一端側が連結されると共に他端側が前記ブラケット部材の内挿孔の内周側に連結されゴム状弾性体からなる一対の防振脚部と、を備える防振装置を製造する防振装置の製造方法において、
前記内筒部材が設置されたゴム加硫金型のキャビティ内にゴム状弾性体を注入して加硫成形することで、前記一対の防振脚部の一端側が前記内筒部材の外周面に加硫接着された第1成形体を成形するゴム加硫工程と、
前記ゴム加硫工程により成形された第1成形体が設置された樹脂成形金型のキャビティ内に樹脂材料を注入して固化させることで、前記第1成形体の前記防振脚部の他端側を前記ブラケット部材の内挿孔の内周側にインサート成形する樹脂成形工程と、を備え、
前記ゴム加硫工程により成形された第1成形体は、前記ブラケット部材の内挿孔の内周側にインサート成形された前記防振脚部の他端側の側面に形成されると共に前記ブラケット部材の外面から突出される突出ゴム部を備えると共に、前記突出ゴム部は、外縁側に位置する平坦面状のシール面部と、前記シール面部に段差を介して連設され前記段差の分だけ前記シール面部よりも突出されるストッパ面部とを備え、
前記樹脂成形工程で使用される樹脂成形金型は、前記第1成形体の突出ゴム部におけるシール面部を押圧する押圧面部を備え、前記押圧面部が前記シール面部を押圧することで、前記樹脂材料が注入されるキャビティと第1成形体の突出ゴム部におけるストッパ面部が収容される空間とを区画することを特徴とする防振装置の製造方法。
A cylindrical inner cylinder member attached to one of the vibration generator side or the vehicle body side, and an insertion hole into which the inner cylinder member is inserted and arranged, are made of a resin material, and are arranged on the vibration generator side or the vehicle body side. A bracket member to be attached to the other, and a pair of protection members made of a rubber-like elastic body having one end connected to the outer peripheral surface of the inner cylinder member and the other end connected to the inner peripheral side of the insertion hole of the bracket member. In the manufacturing method of the vibration isolator for manufacturing the vibration isolator including the swing leg portion,
By injecting a rubber-like elastic body into the cavity of the rubber vulcanization mold in which the inner cylinder member is installed and vulcanizing and molding, one end side of the pair of vibration isolation legs is placed on the outer peripheral surface of the inner cylinder member. A rubber vulcanization step for molding the first vulcanized and bonded product,
The other end of the anti-vibration leg portion of the first molded body is formed by injecting a resin material into a cavity of a resin molding die in which the first molded body molded by the rubber vulcanization step is installed and solidifying the resin material. A resin molding step of insert-molding the side to the inner peripheral side of the insertion hole of the bracket member,
The first molded body molded by the rubber vulcanization process is formed on the side surface on the other end side of the vibration isolating leg portion that is insert-molded on the inner peripheral side of the insertion hole of the bracket member. A protruding rubber portion that protrudes from the outer surface of the flat surface, and the protruding rubber portion is connected to the flat sealing surface portion located on the outer edge side, and the seal surface portion via a step. A stopper surface portion protruding from the surface portion,
The resin molding die used in the resin molding step includes a pressing surface portion that presses a sealing surface portion in the protruding rubber portion of the first molded body, and the pressing surface portion presses the sealing surface portion, thereby the resin material. A method for manufacturing an anti-vibration device, comprising: partitioning a cavity into which water is injected and a space in which the stopper surface portion of the protruding rubber portion of the first molded body is accommodated.
前記防振装置は、前記防振脚部の他端側に埋設されると共に金属材料から構成され少なくとも一部が前記ブラケット部材に係合される外側部材を備え、
前記ゴム加硫工程は、前記外側部材を前記内筒部材と共に設置したゴム加硫金型のキャビティ内にゴム状弾性体を注入して加硫成形することで、前記一対の防振脚部の一端側を前記内筒部材の外周面に連結すると共に前記一対の防振脚部の他端側に前記外側部材を埋設し、
前記樹脂成形工程は、前記樹脂成形金型の押圧面部が、前記突出ゴム部のシール面部であって、前記外側部材の少なくとも一部に重なる領域を押圧することを特徴とする請求項2記載の防振装置の製造方法。
The vibration isolator includes an outer member embedded in the other end side of the vibration isolating leg and made of a metal material and at least a part of which is engaged with the bracket member.
In the rubber vulcanization step, a rubber-like elastic body is injected into a cavity of a rubber vulcanization mold in which the outer member is installed together with the inner cylinder member, and vulcanization molding is performed. The one end side is connected to the outer peripheral surface of the inner cylinder member and the outer member is embedded in the other end side of the pair of vibration isolation legs,
The said resin molding process presses the area | region where the press surface part of the said resin mold is a seal surface part of the said protrusion rubber part, and overlaps at least one part of the said outer member. A method of manufacturing a vibration isolator.
前記樹脂成形工程で使用される樹脂成形金型は、前記押圧面部に連なる縦壁と、前記第1成形体のシール面部およびストッパ面部の間の段差との間に所定の隙間を有することを特徴とする請求項2又は3に記載の防振装置の製造方法。   The resin molding die used in the resin molding step has a predetermined gap between a vertical wall continuous to the pressing surface portion and a step between the sealing surface portion and the stopper surface portion of the first molded body. The manufacturing method of the vibration isolator of Claim 2 or 3.
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