JP4666586B2 - Hydraulic shock absorber - Google Patents

Hydraulic shock absorber Download PDF

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JP4666586B2
JP4666586B2 JP2005041320A JP2005041320A JP4666586B2 JP 4666586 B2 JP4666586 B2 JP 4666586B2 JP 2005041320 A JP2005041320 A JP 2005041320A JP 2005041320 A JP2005041320 A JP 2005041320A JP 4666586 B2 JP4666586 B2 JP 4666586B2
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spring
vibration
outer periphery
suspension
cylinder
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JP2006226416A (en
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公亮 千葉
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Showa Corp
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Showa Corp
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Description

本発明は、油圧緩衝器に関する。   The present invention relates to a hydraulic shock absorber.

油圧緩衝器として、特許文献１に記載の如く、シリンダにピストンロッドを摺動自在に挿入し、シリンダの外周とピストンロッドの外周のそれぞれに抜けたばね支持具の間に懸架スプリングを介装し、懸架スプリングの外周に該懸架スプリングを外側から締付ける防振ラバーを設けたものがある。防振ラバーにより懸架スプリングの振動を抑制し、懸架スプリングが路面から受ける強制的な振動や内燃機関の振動と共振をおこすことを回避しようとするものである。懸架スプリングが大きく振動することを防止し、懸架スプリングがシリンダに接触して異音を生ずることを防止したり、懸架スプリングの耐久性を向上させることを図るものである。
特開平10-132010 As described in Patent Document 1, as a hydraulic shock absorber, a piston rod is slidably inserted into a cylinder, and a suspension spring is interposed between a spring support that has come out of each of the outer periphery of the cylinder and the outer periphery of the piston rod, Some of the suspension springs are provided with an anti-vibration rubber for tightening the suspension spring from the outside. The vibration-proof rubber suppresses the vibration of the suspension spring and tries to avoid the vibration that the suspension spring receives from the road surface and the vibration and resonance of the internal combustion engine. It is intended to prevent the suspension spring from vibrating greatly, to prevent the suspension spring from coming into contact with the cylinder and generating abnormal noise, and to improve the durability of the suspension spring.
JP 10-132010

しかしながら、特許文献１では、懸架スプリングの外周に設けた防振ラバーが、懸架スプリングの伸縮振動により懸架スプリングの軸方向に移動することを防止することの考慮がない。このため、防振ラバーが使用中に懸架スプリングに対する適正設定位置からずれ、当初の共振防止効果を得ることができない。   However, in Patent Document 1, there is no consideration of preventing the vibration-proof rubber provided on the outer periphery of the suspension spring from moving in the axial direction of the suspension spring due to the expansion and contraction vibration of the suspension spring. For this reason, the vibration-proof rubber is displaced from the proper setting position with respect to the suspension spring during use, and the initial resonance prevention effect cannot be obtained.

本発明の課題は、油圧緩衝器において、懸架スプリングの共振防振具を懸架スプリングに対する適正設定位置に保持することにある。   An object of the present invention is to hold a resonance vibration isolator of a suspension spring at an appropriate setting position with respect to the suspension spring in the hydraulic shock absorber.

請求項１の発明は、シリンダにピストンロッドを摺動自在に挿入し、シリンダの外周とピストンロッドの外周のそれぞれに設けたばね支持具の間に懸架スプリングを介装し、懸架スプリングの外周に該懸架スプリングに密着する防振具を設け、前記防振具を懸架スプリングの軸方向に沿う双方向に関してばね支持具に不動となるように該ばね支持具に取付けた油圧緩衝器において、前記防振具が筒状の防振ラバーからなり、該防振ラバーの端部にばね支持具への鍔状取付部を備え、前記ばね支持具がシリンダ又はピストンロッドの外周に係止されるばね受けと、該ばね受けに形成してあるスプリングシート着座面に着座して懸架スプリングを支持するスプリングシートとからなり、ばね受けのスプリングシートが着座するスプリングシート着座面の外周側に防振ラバーの鍔状取付部が取付く段差深さをもつ段差面を切欠形成し、この段差面と、ばね受けのスプリングシート着座面に着座したスプリングシートの該スプリングシート着座面から張り出る外周寄り端面との間に、防振ラバーの鍔状取付部を挟持するようにしたものである。 According to the first aspect of the present invention, a piston rod is slidably inserted into the cylinder, a suspension spring is interposed between the spring support provided on each of the outer periphery of the cylinder and the outer periphery of the piston rod. In the hydraulic shock absorber provided with a vibration isolator closely attached to the suspension spring and attached to the spring support so that the vibration isolation device does not move to the spring support in both directions along the axial direction of the suspension spring. A spring receiver comprising a cylindrical anti- vibration rubber, an end of the anti-vibration rubber having a hook-like attachment to the spring support, and the spring support being locked to the outer periphery of the cylinder or piston rod; , spring seat attachment which consists of a spring seat for supporting the suspension spring is seated on the spring seat seating surface which is formed to receive the spring, spring bearing of the spring seat is seated Flanged mounting portion of the vibration-proof rubber on the outer peripheral side surface is a stepped surface notched form with step depth rather attached, and the stepped surface, said spring seat seating a spring seat seated on the spring seat seating surface of the spring receiver The hook-shaped attachment portion of the vibration isolating rubber is sandwiched between the outer peripheral end surface protruding from the surface.

請求項２の発明は、請求項１の発明において更に、前記スプリングシートの外周寄り端面に、防振ラバーの鍔状取付部に係止する突起を備えたものである。 According to a second aspect of the present invention, in the first aspect of the present invention, the spring seat further includes a protrusion that engages with the hook-shaped attachment portion of the vibration-proof rubber on the end surface near the outer periphery .

（請求項１）
(a)防振具がばね支持具に取付けられ、懸架スプリングの軸方向に沿う上下双方向に不動にされる。従って、防振具が使用中に懸架スプリングに対する（共振防止のための）適正設定位置からずれ移動することなく、防振具による当初の共振防止効果を維持できる。従って、懸架スプリングが大きく振動することを防止し、懸架スプリングがシリンダに接触して異音を生ずることを防止できるし、懸架スプリングの耐久性を向上させることができる。 (Claim 1)
(a) The vibration isolator is attached to the spring support, and is immovable in both the upper and lower directions along the axial direction of the suspension spring. Therefore, the initial anti-resonance effect by the anti-vibration device can be maintained without the anti-vibration device moving out of the proper setting position (for resonance prevention) with respect to the suspension spring during use. Therefore, it is possible to prevent the suspension spring from vibrating greatly, to prevent the suspension spring from coming into contact with the cylinder and generating abnormal noise, and to improve the durability of the suspension spring.

(b)防振具は筒状防振ラバーの取付部を介して、ばね支持具に容易に取付けできる。 (b) The vibration isolator can be easily attached to the spring support via the attachment portion of the cylindrical vibration isolator rubber.

(c)防振具は筒状防振ラバーの鍔状取付部を、ばね受けの段差面と、スプリングシートの外周寄り端面との間に容易に取付けできる。ばね受けの段差面の上に防振ラバーの鍔状取付部を載せ置き、それらの上にスプリングシートを載せ置き、スプリングシートの上に懸架スプリングを載せ置くことで組付けでき、各部品を単に載せ置くだけであって組付性が良い。 (c) The vibration isolator can easily attach the hook-shaped attachment portion of the cylindrical vibration-proof rubber between the step surface of the spring receiver and the end surface near the outer periphery of the spring seat. It can be assembled by placing the hook-shaped mounting part of the vibration-proof rubber on the step surface of the spring holder, placing the spring seat on them, and placing the suspension spring on the spring seat. It is easy to assemble because it is just placed.

(d)防振ラバーの鍔状取付部は、ばね受けの外周側の段差面と、スプリングシートの外周寄り端面との間に挟持される。そして、懸架スプリングのばね荷重は、スプリングシートの内周寄りにおいて、これが着座するばね受けのスプリングシート着座面に直に支持され、防振ラバーを介することがないから、懸架スプリングのばね特性や防振ラバーの耐久性に悪影響を及ぼすことがない。   (d) The hook-shaped attachment portion of the vibration-proof rubber is sandwiched between the step surface on the outer periphery side of the spring receiver and the end surface near the outer periphery of the spring seat. The spring load of the suspension spring is supported directly on the spring seat seating surface of the spring seat on which the spring seat is seated near the inner periphery of the spring seat and does not go through the vibration-proof rubber. Does not adversely affect the durability of the vibration rubber.

（請求項２）
(e)スプリングシートの外周寄り端面に、防振具の鍔状取付部に係止する突起を備えたから、防振ラバーをばね支持具（ばね受けとスプリングシート）に簡易かつ確実に、外れるおそれなく取付けできる。 (Claim 2 )
(e) Since the protrusion near the outer periphery of the spring seat is fitted with a hook-shaped mounting part of the vibration isolator, the anti-vibration rubber may be easily and securely detached from the spring support (spring receiver and spring seat). It can be installed without.

図１は油圧緩衝器を示す全体断面図、図２はばね受けと防振具を示す断面図、図３はばね受けと防振具の変形例を示す断面図、図４はばね受けと防振具の参考例を示す断面図である。 1 is an overall sectional view showing a hydraulic shock absorber, FIG. 2 is a sectional view showing a spring receiver and a vibration isolator, FIG. 3 is a sectional view showing a modification of the spring receiver and the vibration isolator, and FIG. It is sectional drawing which shows the reference example of a vibration tool.

油圧緩衝器１０は、図１に示す如く、シリンダ１１にピストンロッド１２を挿入し、シリンダ１１とピストンロッド１２の外側部に懸架スプリング１３を介装している。シリンダ１１は車体側取付部材１４を備え、ピストンロッド１２にロックナット１５Ａとともに車輪側取付部材１５を備える。   As shown in FIG. 1, the hydraulic shock absorber 10 has a piston rod 12 inserted into a cylinder 11 and a suspension spring 13 interposed between the cylinder 11 and the outside of the piston rod 12. The cylinder 11 includes a vehicle body side mounting member 14, and the piston rod 12 includes a wheel side mounting member 15 together with a lock nut 15 </ b> A.

シリンダ１１の外周には上ばね支持具１６が設けられ、ピストンロッド１２の外周には下ばね支持具１７が設けられ、上ばね支持具１６と下ばね支持具１７の間に懸架スプリング１３を介装している。上ばね支持具１６については後に詳述する。下ばね支持具１７は、ピストンロッド１２に係止されるばね受け１８と、ばね受け１８に着座して懸架スプリング１３を支持するスプリングシート１８Ａとからなる。尚、ばね受け１８とスプリングシート１８Ａの間にはダストカバー１９の下端フランジが挟持され、ダストカバー１９は懸架スプリング１３の内周側をシリンダ１１の外周まわりまで立上り、ダストカバー１９の上端部に設けたダストシール１９Ａをシリンダ１１の外周に摺接させる。   An upper spring support 16 is provided on the outer periphery of the cylinder 11, and a lower spring support 17 is provided on the outer periphery of the piston rod 12, and the suspension spring 13 is interposed between the upper spring support 16 and the lower spring support 17. Disguise. The upper spring support 16 will be described in detail later. The lower spring support 17 includes a spring receiver 18 that is locked to the piston rod 12 and a spring seat 18A that is seated on the spring receiver 18 and supports the suspension spring 13. Note that a lower end flange of the dust cover 19 is sandwiched between the spring receiver 18 and the spring seat 18A. The dust cover 19 rises from the inner peripheral side of the suspension spring 13 to the periphery of the cylinder 11 and reaches the upper end of the dust cover 19. The provided dust seal 19A is brought into sliding contact with the outer periphery of the cylinder 11.

シリンダ１１はピストンロッド１２が貫通するロッドガイド２１を備える。ロッドガイド２１は、Ｏリング２２を介してシリンダ１１に液密に装着されるとともに、オイルシール２３、ブッシュ２４、ダストシール２５を備える内径部にピストンロッド１２を液密に摺動自在としている。尚、シリンダ１１は、ロッドガイド２１の外側に圧側バンパ２６を備え、最圧縮時に、ピストンロッド１２が備えるバンパストッパ２７にこの圧側バンパ２６を衝合して最圧縮ストロークを規制可能としている。また、シリンダ１１は、ロッドガイド２１の内側にワッシャ２８Ａ、伸側バンプラバー２８を備えている。   The cylinder 11 includes a rod guide 21 through which the piston rod 12 passes. The rod guide 21 is liquid-tightly attached to the cylinder 11 via an O-ring 22 and allows the piston rod 12 to slide in a liquid-tight manner on an inner diameter portion including an oil seal 23, a bush 24 and a dust seal 25. The cylinder 11 is provided with a pressure side bumper 26 outside the rod guide 21, and at the time of maximum compression, the pressure side bumper 26 is abutted against a bumper stopper 27 provided in the piston rod 12 so that the maximum compression stroke can be regulated. The cylinder 11 includes a washer 28 </ b> A and an extension-side bump rubber 28 inside the rod guide 21.

油圧緩衝器１０は、ピストンバルブ装置（圧側及び伸側減衰力発生装置）３０を有している。油圧緩衝器１０は、ピストンバルブ装置３０が発生する減衰力により、懸架スプリング１３による衝撃力の吸収に伴うシリンダ１１とピストンロッド１２の伸縮振動を抑制する。   The hydraulic shock absorber 10 has a piston valve device (pressure side and extension side damping force generation device) 30. The hydraulic shock absorber 10 suppresses expansion and contraction vibrations of the cylinder 11 and the piston rod 12 due to the absorption of the impact force by the suspension spring 13 by the damping force generated by the piston valve device 30.

ピストンバルブ装置３０は、シリンダ１１に挿入されたピストンロッド１２の端部にバルブストッパ３１、圧側バルブ３２、ピストン３３、伸側バルブ３４、バルブストッパ３５を装着し、これらをナット３６で固定してある。   The piston valve device 30 has a valve stopper 31, a pressure side valve 32, a piston 33, an expansion side valve 34, and a valve stopper 35 mounted on the end of the piston rod 12 inserted into the cylinder 11, and these are fixed with nuts 36. is there.

ピストン３３は、外周部に備えたＯリング３７Ａ、ピストンリング３７Ｂを介してシリンダ１１の内部を液密に摺接し、シリンダ１１の内部をピストンロッド１２が収容されないピストン側油室３８Ａと、ピストンロッド１２が収容されるロッド側油室３８Ｂとに区画する。ピストン３３は、圧側バルブ３２を備えてピストン側油室３８Ａとロッド側油室３８Ｂとを連通可能とする圧側流路３９と、伸側バルブ３４を備えてピストン側油室３８Ａとロッド側油室３８Ｂとを連通可能とする伸側流路（不図示）とを備える。   The piston 33 is in fluid-tight sliding contact with the inside of the cylinder 11 via an O-ring 37A and a piston ring 37B provided on the outer periphery, and the piston-side oil chamber 38A in which the piston rod 12 is not accommodated inside the cylinder 11; 12 is divided into a rod side oil chamber 38B in which 12 is accommodated. The piston 33 is provided with a pressure side valve 32 and is provided with a pressure side flow path 39 enabling communication between the piston side oil chamber 38A and the rod side oil chamber 38B, and an expansion side valve 34. The piston side oil chamber 38A and the rod side oil chamber are provided. An extension-side flow channel (not shown) that can communicate with 38B.

また、油圧緩衝器１０は、シリンダ１１のピストン側油室３８Ａに対し体積補償室４０を区画するセパレータ４１を備える。セパレータ４１は、シリンダ１１の内径に設けた突条部４２と止め輪４３との間に保持される。セパレータ４１は、ピストン側油室３８Ａと体積補償室４０とを連通するオリフィス孔４５を中心プラグ４４に穿設して備えるとともに、中心プラグ４４の周囲にバルブスプリング４６と板状チェックバルブ４７を備える。セパレータ４１は、中心プラグ４４の周囲に伸側流路４８を開口して備え、伸側流路４８は、油圧緩衝器１０の圧縮時にはピストン側油室３８Ａの油圧により押動されるチェックバルブ４７により閉じられ、伸長時にはバルブスプリング４６により押し戻されるチェックバルブ４７により開かれる。   The hydraulic shock absorber 10 includes a separator 41 that partitions the volume compensation chamber 40 with respect to the piston-side oil chamber 38A of the cylinder 11. The separator 41 is held between a protrusion 42 provided on the inner diameter of the cylinder 11 and a retaining ring 43. The separator 41 is provided with an orifice hole 45 communicating with the piston side oil chamber 38 </ b> A and the volume compensation chamber 40 in the center plug 44, and a valve spring 46 and a plate-like check valve 47 around the center plug 44. . The separator 41 includes an extension-side channel 48 that is opened around the center plug 44, and the extension-side channel 48 is pushed by the hydraulic pressure of the piston-side oil chamber 38A when the hydraulic shock absorber 10 is compressed. Is opened by a check valve 47 which is pushed back by a valve spring 46 when extended.

従って、油圧緩衝器１０は以下の如くに減衰作用を行なう。
（圧縮時）
ピストン側油室３８Ａの油が圧側流路３９を通ってロッド側油室３８Ｂに流れ、この油が圧側バルブ３２を撓み変形させて圧側の減衰力を得る。これに続き、シリンダ１１に進入したピストンロッド１２の進入容積分の油が余剰になり、この余剰油がピストン側油室３８Ａからセパレータ４１のオリフィス孔４５を通って体積補償室４０に排出され、圧側減衰力を得る。 Therefore, the hydraulic shock absorber 10 performs a damping action as follows.
(When compressed)
The oil in the piston side oil chamber 38A flows into the rod side oil chamber 38B through the pressure side flow path 39, and this oil deflects and deforms the pressure side valve 32 to obtain a pressure side damping force. Following this, the oil for the volume of entry of the piston rod 12 that has entered the cylinder 11 becomes surplus, and this surplus oil is discharged from the piston side oil chamber 38A through the orifice hole 45 of the separator 41 to the volume compensation chamber 40, Get compression side damping force.

（伸長時）
ロッド側油室３８Ｂの油が伸側流路を通り、伸側バルブ３４を撓み変形させてピストン側油室３８Ａへ流れ、伸側の減衰力を得る。そしてこのとき、シリンダ１１から退出するピストンロッド１２の退出体積分の油が不足し、この不足油が体積補償室４０からセパレータ４１のオリフィス孔４５を通ってピストン側油室３８Ａへ速やかに補給される。 (When stretched)
The oil in the rod-side oil chamber 38B passes through the expansion-side flow path, deflects and deforms the expansion-side valve 34, flows to the piston-side oil chamber 38A, and obtains an expansion-side damping force. At this time, the oil corresponding to the retracted volume of the piston rod 12 retracting from the cylinder 11 is insufficient, and this insufficient oil is quickly supplied from the volume compensation chamber 40 through the orifice hole 45 of the separator 41 to the piston-side oil chamber 38A. The

これらの圧側と伸側の減衰力により、油圧緩衝器１０の伸縮振動が抑制される。
尚、油圧緩衝器１０の最圧縮時には、シリンダ１１の側のバンパ２６とピストンロッド１２の側のバンパストッパ２７との衝合により最圧縮時の緩衝作用を果たす。また、油圧緩衝器１０の最伸長時には、シリンダ１１の側のバンパラバー２８とピストンロッド１２の側のバルブストッパ３１との衝合により、伸び切り時の緩衝作用を果たす。 The expansion and contraction vibration of the hydraulic shock absorber 10 is suppressed by the damping force on the compression side and the extension side.
When the hydraulic shock absorber 10 is most compressed, a buffering action at the time of the most compression is achieved by a collision between the bumper 26 on the cylinder 11 side and the bumper stopper 27 on the piston rod 12 side. When the hydraulic shock absorber 10 is fully extended, the bumper bar 28 on the cylinder 11 side and the valve stopper 31 on the piston rod 12 side abut against each other to provide a buffering action when fully extended.

しかるに、油圧緩衝器１０にあっては、コイルスプリングからなる懸架スプリング１３が路面から受ける強制的な振動や内燃機関の振動と共振することを回避するため、懸架スプリング１３の外周(本実施例では上端側の概ね半部の外周)に該懸架スプリング１３を外側から締付けるように該懸架スプリング１３に密着する防振具７０を備える。防振具７０は、懸架スプリング１３の上端部から、懸架スプリング１３の共振防止を図るに必要な適正設定長さの範囲に渡って設けられる。   However, in the hydraulic shock absorber 10, the outer periphery of the suspension spring 13 (in this embodiment, in order to avoid resonance with the forced vibration received from the road surface and the vibration of the internal combustion engine) An anti-vibration tool 70 is provided on the upper half of the upper end) so as to be in close contact with the suspension spring 13 so as to be tightened from the outside. The vibration isolator 70 is provided from the upper end portion of the suspension spring 13 over a range of an appropriate set length necessary for preventing resonance of the suspension spring 13.

防振具７０は、図２に示す如く、懸架スプリング１３の軸方向に沿う上下双方向に関して、上ばね支持具１６に係止されて不動となるように該ばね支持具１６に取付けられる。ばね支持具１６は、シリンダ１１の外周に係着されている止め輪５０Ａに係止されるばね受け５０と、ばね受け５０に着座して懸架スプリング１３を支持するスプリングシート６０とからなる。ばね受け５０は筒状部５１の内周を止め輪５０Ａに係止し、筒状部５１の上端部に外周に張り出るフランジ部５２を形成し、このフランジ部５２にスプリングシート着座面５２Ａを形成している。   As shown in FIG. 2, the vibration isolator 70 is attached to the spring support 16 so that the vibration isolator 70 is locked to the upper spring support 16 and does not move in the vertical direction along the axial direction of the suspension spring 13. The spring support 16 includes a spring receiver 50 that is locked to a retaining ring 50 </ b> A that is engaged with the outer periphery of the cylinder 11, and a spring seat 60 that is seated on the spring receiver 50 and supports the suspension spring 13. The spring receiver 50 locks the inner periphery of the tubular portion 51 to the retaining ring 50A, and forms a flange portion 52 projecting to the outer periphery at the upper end portion of the tubular portion 51. The spring seat seating surface 52A is formed on the flange portion 52. Forming.

防振具７０は円筒状の防振ラバー７１からなり、上端部に内周に張り出る鍔状取付部７２を備え、この鍔状取付部７２をばね支持具１６への取付部とする。ばね支持具１６は、ばね受け５０のスプリングシート６０が着座するスプリングシート着座面５２Ａの外周側に環状段差面５２Ｂを切欠形成し、この段差面５２Ｂと、スプリングシート６０の外周寄り端面との間に、防振具７０の鍔状取付部７２を挟持するものである。   The vibration isolator 70 includes a cylindrical vibration isolating rubber 71, and has a hook-shaped attachment portion 72 that protrudes to the inner periphery at the upper end, and this hook-shaped attachment portion 72 serves as an attachment portion to the spring support 16. In the spring support 16, an annular step surface 52 </ b> B is notched on the outer peripheral side of the spring seat seating surface 52 </ b> A on which the spring seat 60 of the spring receiver 50 is seated. In addition, the hook-shaped attachment portion 72 of the vibration isolator 70 is sandwiched.

スプリングシート６０は外周寄り端面に、防振具７０の鍔状取付部７２に係止する突起６１を備える。スプリングシート６０は防振ラバー７１の筒内径と概ね同一の外径を有し、この外径の周方向に連続して環状をなす突起６１を備え、又はこの外径の周方向に不連続をなす複数位置に突起６１を備える。   The spring seat 60 includes a protrusion 61 that is engaged with the hook-shaped attachment portion 72 of the vibration isolator 70 on the end surface near the outer periphery. The spring seat 60 has an outer diameter that is substantially the same as the cylindrical inner diameter of the vibration-proof rubber 71, and includes a protrusion 61 that is annular in the circumferential direction of the outer diameter, or is discontinuous in the circumferential direction of the outer diameter. Protrusions 61 are provided at a plurality of positions.

従って、油圧緩衝器１０における懸架スプリング１３の組付手順は、図２（Ｂ）に示す如く、ばね受け５０のフランジ部５２の環状段差面５２Ｂの上に防振具７０（防振ラバー７１）の鍔状取付部７２を載せ置き、それらばね受け５０のフランジ部５２のスプリングシート着座面５２Ａと防振具７０（防振ラバー７１）の鍔状取付部７２の上にスプリングシート６０を載せ置き、スプリングシート６０の上に懸架スプリング１３を載せ置く。防振具７０（防振ラバー７１）の鍔状取付部７２の厚みは、ばね受け５０の段差面５２Ｂがスプリングシート着座面５２Ａに対してなす段差深さと同等又はより厚く設定されており、取付部７２はばね受け５０の段差面５２Ｂとスプリングシート６０の外周寄り端面との間に挟持される。   Therefore, the procedure for assembling the suspension spring 13 in the hydraulic shock absorber 10 is as shown in FIG. 2B, in which the vibration isolator 70 (anti-vibration rubber 71) is placed on the annular step surface 52B of the flange portion 52 of the spring receiver 50. The spring seat 60 is placed on the spring seat seating surface 52A of the flange portion 52 of the spring receiver 50 and the hook-like attachment portion 72 of the vibration isolator 70 (anti-vibration rubber 71). Then, the suspension spring 13 is placed on the spring seat 60. The thickness of the hook-shaped mounting portion 72 of the vibration isolator 70 (antivibration rubber 71) is set to be equal to or thicker than the step depth formed by the step surface 52B of the spring receiver 50 with respect to the spring seat seating surface 52A. The portion 72 is sandwiched between the step surface 52 </ b> B of the spring receiver 50 and the end surface near the outer periphery of the spring seat 60.

本実施例によれば以下の作用効果を奏する。
(a)防振具７０がばね支持具１６に取付けられ、懸架スプリング１３の軸方向に沿う上下双方向に不動にされる。従って、防振具７０が使用中に懸架スプリング１３に対する（共振防止のための）適正設定位置からずれ移動することなく、防振具７０による当初の共振防止効果を維持できる。従って、懸架スプリング１３が大きく振動することを防止し、懸架スプリング１３がシリンダ１１に接触して異音を生ずることを防止できるし、懸架スプリング１３の耐久性を向上させることができる。 According to the present embodiment, the following operational effects can be obtained.
(a) The vibration isolator 70 is attached to the spring support 16 and is immovable in both the up and down directions along the axial direction of the suspension spring 13. Therefore, the initial anti-resonance effect by the anti-vibration tool 70 can be maintained without the anti-vibration tool 70 moving out of the proper setting position (for resonance prevention) with respect to the suspension spring 13 during use. Accordingly, it is possible to prevent the suspension spring 13 from vibrating greatly, to prevent the suspension spring 13 from coming into contact with the cylinder 11 and to generate noise, and to improve the durability of the suspension spring 13.

(b)防振具７０は筒状防振ラバー７１の取付部７２を介して、ばね支持具１６に容易に取付けできる。   (b) The vibration isolator 70 can be easily attached to the spring support 16 via the attachment portion 72 of the cylindrical vibration isolating rubber 71.

(c)防振具７０は筒状防振ラバー７１の鍔状取付部７２を、ばね受け５０の段差面５２Ｂと、スプリングシート６０の外周寄り端面との間に容易に取付けできる。ばね受け５０の段差面５２Ｂの上に防振ラバー７１の鍔状取付部７２を載せ置き、それらの上にスプリングシート６０を載せ置き、スプリングシート６０の上に懸架スプリング１３を載せ置くことで組付けでき、各部品を単に載せ置くだけであって組付性が良い。   (c) The vibration isolator 70 can easily attach the hook-shaped attachment portion 72 of the cylindrical vibration isolation rubber 71 between the step surface 52B of the spring receiver 50 and the end face near the outer periphery of the spring seat 60. The hook-shaped mounting portion 72 of the vibration-proof rubber 71 is placed on the step surface 52B of the spring receiver 50, the spring seat 60 is placed thereon, and the suspension spring 13 is placed on the spring seat 60. It can be attached, and each part is simply placed, and the assemblability is good.

(d)防振ラバー７１の鍔状取付部７２は、ばね受け５０の外周側の段差面５２Ｂと、スプリングシート６０の外周寄り端面との間に挟持される。そして、懸架スプリング１３のばね荷重は、スプリングシート６０の内周寄りにおいて、これが着座するばね受け５０のスプリングシート着座面５２Ａに直に支持され、防振ラバー７１を介することがないから、懸架スプリング１３のばね特性や防振ラバー７１の耐久性に悪影響を及ぼすことがない。   (d) The hook-shaped attachment portion 72 of the vibration-proof rubber 71 is sandwiched between the step surface 52B on the outer peripheral side of the spring receiver 50 and the end surface near the outer periphery of the spring seat 60. The spring load of the suspension spring 13 is supported directly on the spring seat seating surface 52A of the spring receiver 50 on which the spring seat 60 is seated near the inner periphery of the spring seat 60, and does not go through the vibration-proof rubber 71. No adverse effects are exerted on the spring characteristics of 13 and the durability of the vibration-proof rubber 71.

(e)スプリングシート６０の外周寄り端面に、防振具７０の鍔状取付部７２に係止する突起６１を備えたから、防振ラバー７１をばね支持具１６（ばね受け５０とスプリングシート６０）に簡易かつ確実に、外れるおそれなく取付けできる。   (e) Since the protrusion 61 that engages with the hook-shaped mounting portion 72 of the vibration isolator 70 is provided on the end face near the outer periphery of the spring seat 60, the vibration isolator rubber 71 is attached to the spring support 16 (spring receiver 50 and spring seat 60). It can be easily and securely installed without fear of coming off.

図３の変形例が図１、図２の実施例と異なる点は、スプリングシート６０から突起６１を撤去したことにある。防振具７０（防振ラバー７１）の鍔状取付部７２が、ばね受け５０のフランジ部５２の段差面５２Ｂと、スプリングシート６０の外周寄り端面との間に挟持されて使用される。   The modification of FIG. 3 is different from the embodiment of FIGS. 1 and 2 in that the protrusion 61 is removed from the spring seat 60. The hook-shaped attachment portion 72 of the vibration isolator 70 (antivibration rubber 71) is used while being sandwiched between the step surface 52B of the flange portion 52 of the spring receiver 50 and the end surface near the outer periphery of the spring seat 60.

図４の参考例が図１、図２の実施例と異なる点は、ばね支持具１６をばね受け５０だけからなるものにし、懸架スプリング１３をばね受け５０のフランジ部５２の上に直接的に支持し、フランジ部５２の外周側に環状係止部５３を形成し、防振具７０（防振ラバー７１）の上端部の内周に設けた環状取付溝７３を環状係止部５３に外方から抱持するように係着して取付けたものである。 The reference example of FIG. 4 differs from the embodiment of FIGS. 1 and 2 in that the spring support 16 is composed only of the spring receiver 50 and the suspension spring 13 is directly on the flange portion 52 of the spring receiver 50. An annular locking portion 53 is formed on the outer peripheral side of the flange portion 52, and an annular mounting groove 73 provided on the inner periphery of the upper end portion of the vibration isolator 70 (antivibration rubber 71) is formed outside the annular locking portion 53. It is attached and attached so as to hold it from one side.

以上、本発明の実施例を図面により詳述したが、本発明の具体的な構成はこの実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。例えば、防振具７０（防振ラバー７１）の鍔状取付部７２に係止する突起（６１）を、スプリングシート６０ではなく、ばね受け５０のフランジ部５２の段差面５２Ｂに備えても良い。また、防振具７０はピストンロッド１２の側に設けられても良い。   The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, a protrusion (61) that engages with the hook-shaped attachment portion 72 of the vibration isolator 70 (antivibration rubber 71) may be provided on the step surface 52B of the flange portion 52 of the spring receiver 50 instead of the spring seat 60. . The vibration isolator 70 may be provided on the piston rod 12 side.

図１は油圧緩衝器を示す全体断面図である。FIG. 1 is an overall cross-sectional view showing a hydraulic shock absorber. 図２はばね受けと防振具を示す断面図である。FIG. 2 is a sectional view showing the spring support and the vibration isolator. 図３はばね受けと防振具の変形例を示す断面図である。FIG. 3 is a sectional view showing a modification of the spring receiver and the vibration isolator. 図４はばね受けと防振具の参考例を示す断面図である。FIG. 4 is a cross-sectional view showing a reference example of a spring receiver and a vibration isolator.

符号の説明Explanation of symbols

１０ 油圧緩衝器
１１ シリンダ
１２ ピストンロッド
１３ 懸架スプリング
１６、１７ ばね支持具
５０ ばね受け
５２Ａ スプリングシート着座面
５２Ｂ 段差面
６０ スプリングシート
６１ 突起
７０ 防振具
７１ 防振ラバー
７２ 鍔状取付部 DESCRIPTION OF SYMBOLS 10 Hydraulic shock absorber 11 Cylinder 12 Piston rod 13 Suspension springs 16 and 17 Spring support 50 Spring support 52A Spring seat seating surface 52B Step surface 60 Spring seat 61 Protrusion 70 Vibration isolator 71 Vibration isolator rubber 72 Saddle-shaped attachment part

Claims (2)

シリンダにピストンロッドを摺動自在に挿入し、シリンダの外周とピストンロッドの外周のそれぞれに設けたばね支持具の間に懸架スプリングを介装し、懸架スプリングの外周に該懸架スプリングに密着する防振具を設け、
前記防振具を懸架スプリングの軸方向に沿う双方向に関してばね支持具に不動となるように該ばね支持具に取付けた油圧緩衝器において、
前記防振具が筒状の防振ラバーからなり、該防振ラバーの端部にばね支持具への鍔状取付部を備え、
前記ばね支持具がシリンダ又はピストンロッドの外周に係止されるばね受けと、該ばね受けに形成してあるスプリングシート着座面に着座して懸架スプリングを支持するスプリングシートとからなり、
ばね受けのスプリングシートが着座するスプリングシート着座面の外周側に防振ラバーの鍔状取付部が取付く段差深さをもつ段差面を切欠形成し、この段差面と、ばね受けのスプリングシート着座面に着座したスプリングシートの該スプリングシート着座面から張り出る外周寄り端面との間に、防振ラバーの鍔状取付部を挟持するようにしたことを特徴とする油圧緩衝器。 Insert a piston rod slidably into the cylinder, install a suspension spring between the spring supports provided on the outer periphery of the cylinder and the outer periphery of the piston rod, and attach the suspension spring to the outer periphery of the suspension spring. Provide the ingredients,
In the hydraulic shock absorber attached to the spring support so that the vibration isolator is immovable to the spring support in both directions along the axial direction of the suspension spring,
The vibration isolator comprises a cylindrical vibration isolating rubber, and is provided with a hook-shaped attachment portion to a spring support at the end of the anti-vibration rubber,
The spring support includes a spring receiver that is locked to the outer periphery of the cylinder or the piston rod, and a spring seat that sits on a spring seat seating surface formed on the spring receiver and supports the suspension spring,
The step surface flange-shaped mounting portion of the vibration-proof rubber on the outer peripheral side of the spring seat seating surface has a step depth rather attached to spring receiver of the spring seat is seated cutaway formed, and the stepped surface, the spring bearing of the spring seated A hydraulic shock absorber characterized by sandwiching a hook-shaped attachment portion of an anti-vibration rubber between a spring seat seated on a surface and an end face near the outer periphery protruding from the seat seating surface . 前記スプリングシートの外周寄り端面に、防振ラバーの鍔状取付部に係止する突起を備えた請求項１に記載の油圧緩衝器。   2. The hydraulic shock absorber according to claim 1, further comprising: a protrusion that engages with a hook-shaped attachment portion of the vibration-proof rubber on an end face near the outer periphery of the spring seat.
JP2005041320A 2005-02-17 2005-02-17 Hydraulic shock absorber Expired - Fee Related JP4666586B2 (en)

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JP5936127B2 (en) * 2012-12-06 2016-06-15 Ｋｙｂ株式会社 Vehicle height adjustment device
BR112017011975B1 (en) * 2014-12-12 2023-02-23 Honda Motor Co., Ltd SHOCK ABSORBER
JP2021148197A (en) * 2020-03-19 2021-09-27 日立Astemo株式会社 Shock absorber for vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054851U (en) * 1983-09-21 1985-04-17 川崎重工業株式会社 rear suspension
JPH10132010A (en) * 1996-10-24 1998-05-22 Honda Motor Co Ltd Buffer
JPH10292841A (en) * 1997-04-18 1998-11-04 Kayaba Ind Co Ltd Top cover structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054851U (en) * 1983-09-21 1985-04-17 川崎重工業株式会社 rear suspension
JPH10132010A (en) * 1996-10-24 1998-05-22 Honda Motor Co Ltd Buffer
JPH10292841A (en) * 1997-04-18 1998-11-04 Kayaba Ind Co Ltd Top cover structure

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