JPH0333937B2 - - Google Patents
Info
- Publication number
- JPH0333937B2 JPH0333937B2 JP15251583A JP15251583A JPH0333937B2 JP H0333937 B2 JPH0333937 B2 JP H0333937B2 JP 15251583 A JP15251583 A JP 15251583A JP 15251583 A JP15251583 A JP 15251583A JP H0333937 B2 JPH0333937 B2 JP H0333937B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature control
- flow rate
- temperature
- inner tube
- ring valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 11
- 230000035939 shock Effects 0.000 claims description 10
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/52—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics in case of change of temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Description
【発明の詳細な説明】
本発明は温度変化に対して常に安定して作動す
る油圧式緩衝器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic shock absorber that always operates stably against temperature changes.
一般に油圧式緩衝器においては、温度が上昇す
ると液体の粘度が低下し、緩衝能力が低下する。
この為冬場に設定した緩衝器が夏場では充分その
能力を発揮できず、再度調整しなおす必要が生じ
たり、あるいは同一の周囲温度でも緩衝器の自己
発熱により使用中に緩衝能力が低下しボトミング
現象が発生することがある。本発明は上述した点
を考慮し、温度上昇に伴ない液体通路のオリフイ
ス孔を制御することにより、常に一定した緩衝効
果を提供するものである。 Generally, in a hydraulic shock absorber, when the temperature rises, the viscosity of the liquid decreases, and the buffer capacity decreases.
For this reason, a buffer set in the winter may not be able to fully demonstrate its capacity in the summer and may need to be readjusted, or even at the same ambient temperature, the buffer capacity may decrease during use due to self-heating of the buffer, resulting in bottoming phenomenon. may occur. The present invention takes the above points into consideration and provides a constant buffering effect by controlling the orifice hole of the liquid passage as the temperature rises.
第１図は本発明による油圧式緩衝器の構造図で
ある。外周部にネジが切られたアウターチユーブ
１の内側には、インナーチユーブ２が収納されて
おり、さらにインナーチユーブ２の内側にはピス
トンロツド３と一体となつたピストン４が摺動可
能に納められている。このピストン４の中央部に
は通路孔８を開閉する弁球７が配設されている。
さらにピストン４は復帰スプリング６により、常
に上方に弾撥されている。またインナーチユーブ
２の底部には底蓋を兼ねた調整ツマミ５が枢支さ
れている。このインナーチユーブ２には通路孔１
０が開けられており、これに対向する位置にある
調整ツマミ５には流量調整溝１１が、また一部に
流量調整孔１２が設けられている。この流量調整
機構は第２図ａに示されているようにインナーチ
ユーブ２の通路孔１０と調整ツマミ５の流量調整
孔１２の位置とが対向していれば、液体２０は矢
印の様に最短距離でインナーチユーブ２の内側よ
り外側に小さな粘性抵抗で移動することができ
る。反対に第２図ｂに示されるようインナーチユ
ーブ２の通路孔１０と調整ツマミ５の流量調整孔
１２とが180度ずれた位置となると、液体２０は
流量調整孔１２を出た後、流量調整溝１１を通
り、通路孔１０に到達しインナーチユーブ２の外
側に出る為め粘性抵抗が大きくなるものである。
一方アウターチユーブ１とインナーチユーブ２と
の間にはギヤツプがあり、このギヤツプの上部に
はアキユムレータ１４が挿入されている。このア
キユムレータ１４を保持するようにインナーチユ
ーブ２には隔壁１５が設けられている。この隔壁
１５は図の様にインナーチユーブ２に一体として
作るのが安価であるが、下部にあるバイアススプ
リング１７の初期設定を可変できるようにインナ
ーチユーブ２と螺合しておくのもよい。 FIG. 1 is a structural diagram of a hydraulic shock absorber according to the present invention. An inner tube 2 is housed inside an outer tube 1 whose outer circumference is threaded, and a piston 4 integrated with a piston rod 3 is slidably housed inside the inner tube 2. There is. A valve ball 7 for opening and closing the passage hole 8 is disposed in the center of the piston 4.
Furthermore, the piston 4 is always resiliently repelled upward by the return spring 6. Further, an adjustment knob 5 which also serves as a bottom cover is pivotally supported at the bottom of the inner tube 2. This inner tube 2 has a passage hole 1.
0 is opened, and the adjustment knob 5 located opposite to this is provided with a flow rate adjustment groove 11, and a part thereof is provided with a flow rate adjustment hole 12. This flow rate adjustment mechanism is such that if the passage hole 10 of the inner tube 2 and the flow rate adjustment hole 12 of the adjustment knob 5 are opposed to each other as shown in FIG. It is possible to move from the inside of the inner tube 2 to the outside with small viscous resistance. On the other hand, when the passage hole 10 of the inner tube 2 and the flow rate adjustment hole 12 of the adjustment knob 5 are shifted by 180 degrees as shown in FIG. Since it passes through the groove 11, reaches the passage hole 10, and exits the inner tube 2, the viscous resistance becomes large.
On the other hand, there is a gap between the outer tube 1 and the inner tube 2, and an accumulator 14 is inserted into the upper part of this gap. A partition wall 15 is provided in the inner tube 2 to hold the accumulator 14. Although it is inexpensive to make this partition wall 15 integrally with the inner tube 2 as shown in the figure, it is also preferable to screw it into the inner tube 2 so that the initial setting of the bias spring 17 at the bottom can be varied.
このバイアススプリング１７に接し、温調用リ
ング弁１８があり、さらに下側にはセンサースプ
リング１９が構成されている。この温調用リング
弁１８は、インナーチユーブ２に設けられた複数
の小孔でできた温調用オリフイス２１（あるいは
スリツト状の温調用オリフイス２１）の周りを包
むようにして、摺動可能に設定されている。また
本発明に使用されるセンサースプリング１９は一
般に形状記憶合金と呼ばれ、所定温度を越えると
初期形状に復帰するとともに、弾性係数も大きく
なる性質をもつたものである。 A temperature control ring valve 18 is provided in contact with the bias spring 17, and a sensor spring 19 is further provided below. This temperature control ring valve 18 is configured to be slidable so as to wrap around a temperature control orifice 21 (or a slit-shaped temperature control orifice 21) made of a plurality of small holes provided in the inner tube 2. . The sensor spring 19 used in the present invention is generally called a shape memory alloy, and has the property of returning to its initial shape and increasing its elastic modulus when a predetermined temperature is exceeded.
次に本油圧緩衝器の動作を説明する。初めに通
路孔１０に対して流量調整孔１２の位置決めを行
ない、衝撃吸収状態が適切となるよう調整ツマミ
５を回転する。この時、室温20℃程度であれば温
調用リング弁１８は第３図に示されるよう、温調
用オリフイス２１の内小孔２１−４のみを閉成し
た状態となつている。ここで外部よりピストンロ
ツド３に衝撃が加わると、従来周知のように、ピ
ストン４の弁球７は通路孔９を閉成し、液体２０
は流量調整孔１２、流量調整溝１１、通路孔１０
を通りアキユムレータ１４及び通路孔９を通りピ
ストン４の上方に移動する。また液体２０の一部
は温調用オリフイスの小孔２１−１，２１−２，
２１−３を通り移動する。この為液体２０が通過
するオリフイス面積はこれらが合計されたものと
なる。ここで緩衝器本体が自己発熱あるいは外気
温度の影響により、温度が上昇すると、液体２０
の粘度は低下し、緩衝器の吸収能力は大幅に低下
するのが従来製品である。しかし本製品では、セ
ンサースプリング１９がバイアススプリング１７
に抗して伸張し、温調用リング弁１８を上昇温度
幅に従つて上方に移動する為、温調用オリフイス
の小孔２１−３，２１−２が閉成される。この為
全体としてのオリフイス面積は縮少され、液体２
０の粘度が低下しても緩衝器の能力を低下させな
いものである。反対に冬場など、外気温度が低下
すると、センサースプリング１９は弾性係数が小
さくなり、バイアススプリング１７の弾撥力によ
り温調用リング弁１８は下方に移動し温調用オリ
フイス２１の小孔２１−１〜２１−４を開放す
る。一方液体２０の粘度は高くなる為、緩衝器の
能力は低下しないものである。この様に温度にと
もない、液体２０の粘度が変化しても、これを補
正するようにセンサースプリング１９が働き、温
調用オリフイス２１の小孔を開閉する為め、常に
安定した作動をする油圧緩衝器を得ることができ
るものである。 Next, the operation of this hydraulic shock absorber will be explained. First, the flow rate adjustment hole 12 is positioned with respect to the passage hole 10, and the adjustment knob 5 is rotated so that the shock absorption state is appropriate. At this time, if the room temperature is about 20 DEG C., the temperature control ring valve 18 is in a state where only the inner small hole 21-4 of the temperature control orifice 21 is closed, as shown in FIG. When an impact is applied to the piston rod 3 from the outside, the valve ball 7 of the piston 4 closes the passage hole 9 and the liquid 20
are the flow rate adjustment hole 12, the flow rate adjustment groove 11, and the passage hole 10.
, and moves above the piston 4 through the accumulator 14 and the passage hole 9. Also, a part of the liquid 20 flows through the small holes 21-1 and 21-2 of the temperature control orifice.
Move through 21-3. Therefore, the area of the orifice through which the liquid 20 passes is the sum of these areas. If the temperature of the shock absorber body rises due to self-heating or the influence of outside air temperature, the liquid 20
With conventional products, the viscosity of the product decreases, and the absorption capacity of the buffer decreases significantly. However, in this product, the sensor spring 19 is replaced by the bias spring 17.
The small holes 21-3 and 21-2 of the temperature control orifice are closed because the temperature control ring valve 18 is moved upward according to the rising temperature range. For this reason, the overall orifice area is reduced, and the liquid 2
Even if the viscosity of 0 is reduced, the performance of the buffer is not reduced. On the other hand, when the outside temperature drops, such as in winter, the elastic coefficient of the sensor spring 19 decreases, and the elastic force of the bias spring 17 moves the temperature control ring valve 18 downward, causing the small holes 21-1 to 21 of the temperature control orifice 21 to move downward. Open 21-4. On the other hand, since the viscosity of the liquid 20 increases, the capacity of the buffer does not decrease. In this way, even if the viscosity of the liquid 20 changes with temperature, the sensor spring 19 works to compensate for this and opens and closes the small hole of the temperature control orifice 21, so the hydraulic shock absorber always operates stably. It is something that can be obtained.
第１図は本発明の油圧緩衝器の一部断面図、第
２図は流量調整機構の説明図、第３図は温度調整
機構の説明図である。
１……アウターチユーブ、２……インナーチユ
ーブ、３……ピストンロツド、４……ピストン、
５……調整ツマミ、６……復帰スプリング、７…
…弁球、８，９，１０，１６……通路孔、１１…
…流量調整溝、１２……流量調整溝、１３……止
め栓、１４……アキユムレータ、１５……隔壁、
１７……バイアススプリング、１８……温調用リ
ング弁、１９……センサースプリング、２０……
液体、２１……温調用オリフイス。
FIG. 1 is a partial sectional view of the hydraulic shock absorber of the present invention, FIG. 2 is an explanatory diagram of a flow rate adjustment mechanism, and FIG. 3 is an explanatory diagram of a temperature adjustment mechanism. 1... Outer tube, 2... Inner tube, 3... Piston rod, 4... Piston,
5...adjustment knob, 6...return spring, 7...
... Valve ball, 8, 9, 10, 16... Passage hole, 11...
...Flow rate adjustment groove, 12...Flow rate adjustment groove, 13...Stop plug, 14...Accumulator, 15...Partition wall,
17... Bias spring, 18... Temperature control ring valve, 19... Sensor spring, 20...
Liquid, 21... Orifice for temperature control.
Claims (1)
ユーブと、該インナーチユーブ内を上下動するピ
ストン及びピストンロツドと、該ピストン及びピ
ストンロツドの上下動により流量調整孔を通り移
動する液体とよりなる油圧式緩衝器において、 前記流量調整孔あるいは別に設けられた温調用
オリフイスを開閉する温調用リング弁と、該温調
用リング弁を一方向に弾撥するよう設けられ、通
常のバネ材でできたバイアススプリングと、前記
温調用リング弁を温度上昇とともに前記した流量
調整孔あるいは温調用オリフイスの開放面積を小
さくするように前記したバイアススプリングに抗
して弾撥するように設けられ、形状記憶合金材で
できたセンサースプリングとより構成されたこと
を特徴とする自動温度調整機能を有する油圧式緩
衝器。[Claims] 1. Consists of an inner tube installed in an outer tube, a piston and a piston rod that move up and down within the inner tube, and a liquid that moves through a flow rate adjustment hole due to the up and down movement of the piston and piston rod. In a hydraulic shock absorber, there is a temperature control ring valve that opens and closes the flow rate adjustment hole or a temperature control orifice provided separately, and a temperature control ring valve that is provided to elastically repel the temperature control ring valve in one direction and is made of a normal spring material. A bias spring and a shape memory alloy material are provided so as to elastically repel the temperature control ring valve against the bias spring so as to reduce the open area of the flow rate control hole or temperature control orifice as the temperature rises. A hydraulic shock absorber with an automatic temperature adjustment function, characterized by being composed of a sensor spring made of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15251583A JPS6044636A (en) | 1983-08-23 | 1983-08-23 | Hydraulic buffer having automatic temperature control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15251583A JPS6044636A (en) | 1983-08-23 | 1983-08-23 | Hydraulic buffer having automatic temperature control function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6044636A JPS6044636A (en) | 1985-03-09 |
| JPH0333937B2 true JPH0333937B2 (en) | 1991-05-20 |
Family
ID=15542129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15251583A Granted JPS6044636A (en) | 1983-08-23 | 1983-08-23 | Hydraulic buffer having automatic temperature control function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6044636A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607890B1 (en) * | 1986-12-09 | 1989-04-21 | Renault | SHOCK ABSORBER COMPRISING SHAPE MEMORY MATERIALS |
| DE10323952B4 (en) * | 2003-05-27 | 2006-06-29 | Zf Sachs Ag | Vibration damper with temperature-compensated damping characteristics |
-
1983
- 1983-08-23 JP JP15251583A patent/JPS6044636A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6044636A (en) | 1985-03-09 |
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