CN103384779B - Buffer - Google Patents
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- CN103384779B CN103384779B CN201280009793.2A CN201280009793A CN103384779B CN 103384779 B CN103384779 B CN 103384779B CN 201280009793 A CN201280009793 A CN 201280009793A CN 103384779 B CN103384779 B CN 103384779B
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- mentioned
- bladder
- cylinder body
- ridge
- piston rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for piston rods
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a kind of buffer, this buffer makes fluid flow into and flow out in fluid chamber, fluid to be circulated in cylinder body, and by the resistance of fluid, piston rod is braked, bladder has the outstanding and front end slip ridge of the ring-type making external diameter maximum in this bladder of radial outside to this bladder in forward end, cylinder body has the internal diameter of more than the external diameter of front end slip ridge in the large diameter portion of collecting accumulator, and the end face of the forward end in this large diameter portion, have and give prominence to and the pressing ridge of ring-type to terminal side pressing front end slip ridge towards the terminal side of large diameter portion.
Description
Technical field
The present invention relates to the buffer in cylinder body with accumulator, particularly relate to and there is the buffer that bladder is wrapped in the liner being embedded in the tubular of piston rod outward and the accumulator formed.
Background technique
In the past, such as, described in patent documentation 1, be known to the buffer of the impact force relaxed between object.Fig. 4 (a) is the in-built sectional view representing buffer, and Fig. 4 (b) illustrates that the accumulator forming buffer is assemblied in the figure of the process of cylinder body.
As shown in Figure 4 (a), being formed as the cardinal extremity of cylinder C of secondary cylindrical shape with the end, the lid CP for enclosing each component parts in the inside of cylinder C is embedded with.
In the inside of this cylinder C, be inserted with in the mode of interspersed lid CP the piston rod R that the central shaft along cylinder C extends.In this piston rod R, outer columned piston P in the path part C1 of cylinder C, in addition, in piston rod R, is embedded with the liner 50 of the coiling shape be positioned in large diameter portion C2 inside and outside the large diameter portion C2 of cylinder C.In addition, in piston rod R, outside the cardinal extremity of liner 50, be embedded with the seal ring SR between sealed liner 50 and piston rod R.
Above-mentioned piston P is formed as the cylindrical shape can slided at path part C1 inner peripheral surface, the inner space of path part C1 is divided into the forward end of piston P and the terminal side of piston P.Piston P has the axially extended restriction PH along piston rod R, thus between the space of the terminal side of the space of the forward end of piston P and piston P, on the basis of the fluid resistance of regulation, silicone oil is circulated.
In above-mentioned liner 50, in the central authorities of the axis of piston rod R, at the upper outside sleeve part 51 being embedded with cylindrical shape of piston rod R.At the two end part of the axis of sleeve part 51, be linked with diameter be greater than sleeve part 51 front end boss portion 52 and similarly diameter be greater than the cardinal extremity lip part 53 of sleeve part 51.In addition, front end boss portion 52 has the axially extended stream 52H along piston rod R, circulates in the forward end in front end boss portion 52 and path part C1 with the chien shih silicone oil in the outside of the radial direction of sleeve part 51.
On the outer circumferential face of liner 50, be equipped with bladder 60 in the mode covering this outer circumferential face entirety.Bladder 60 is the elastomers formed by synthetic rubber or resin etc., is formed as the axially extended coiling shape along piston rod R.The opening portion of the forward end of this bladder 60, the radially inner side to piston rod R bends, and in the mode that the forward end of stream 52H is open, hangs over the front end in front end boss portion 52.In addition, the opening portion of the terminal side of bladder 60, also bends to radially inner side, is hung on the cardinal extremity of cardinal extremity lip part 53.In such bladder 60, cover the position of the outer circumferential face in pair of flanges portion 52,53, press and pressed by the inner peripheral surface of this outer circumferential face and large diameter portion C2.Further, in the buffer formed like this, the space in cylinder C is divided into four spaces below by piston P and bladder 60.
In path part C1, relative to the space (the first space S 1) of the forward end of piston P.
In path part C1, relative to the space (second space S2) of the terminal side of piston P.
In large diameter portion C2, the space (the 3rd space S 3) of the inner side of bladder 60.
In large diameter portion C2, the space (the 4th space S 4) in the outside of bladder 60.
Between above-mentioned first space S 1 and second space S2, on the basis of the fluid resistance of regulation, silicone oil circulates via the restriction PH of piston P.In addition, between above-mentioned second space S2 and the 3rd space S 3, silicone oil circulates via stream 52H.On the other hand, between second space S2 and the 4th space S 4 and between the 3rd space S 3 and the 4th space S 4, divided by bladder 60.
Further, if piston rod R pushes in cylinder C, then limit the circulation of silicone oil at restriction PH, by the fluid resistance of such silicone oil, piston rod R is braked.Now, although the volume reducing of the first space S 1, the change of such volume is absorbed to the radial outside flexure of piston rod R by bladder 60.In addition, if piston rod R pulls out in cylinder C, then it is also by the fluid resistance of silicone oil, and piston rod R is braked.Further, although the volume enlargement of the first space S 1, the change of such volume is absorbed to the radially inner side flexure of piston rod R by bladder 60.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2007-270951 publication
Summary of the invention
Invent problem to be solved
But, be assemblied in the process of cylinder C at the accumulator be made up of above-mentioned liner 50 and bladder 60, as shown in Figure 4 (b), under the state being embedded in piston rod R outside piston P and accumulator, insert piston rod R in the inside of large diameter portion C2.Now, be fixed on the inside of large diameter portion C2 at liner 50 before, the forward end of bladder 60 continues to slide at the inner peripheral surface of cylinder C.
On the other hand, in the forward end of bladder 60, as mentioned above, need to seal the function between second space S2 and the 3rd space S 3 and between second space S2 and the 4th space S 4.Therefore, the interval of the outer circumferential face in front end boss portion 52 and the inner peripheral surface of large diameter portion C2, generally for guarantee these sealings and be designed to bladder 60 forward end radially by conquassation., on the basis of this design, if bladder 60 slides at the inner peripheral surface of cylinder C, then act on bladder 60 with the side larger frictional force F in the opposite direction inserting piston rod R.Its result, in bladder 60, the position (position surrounded by the double dot dash line of Fig. 4 (b)) being hung on front end boss portion 52 is rolled from front end boss portion 52 sometimes.And then, in the process of assembling buffer, likely lose the sealing between second space S2 and the 3rd space S 3, sealing between second space S2 and the 4th space S 4.
The present invention completes in view of such actual conditions, its object is to provide the buffer that can suppress situation about reducing in the sealing of cylinder body inner fluid.
In order to realize such object, according to the first viewpoint of the present invention, a kind of buffer being provided, possessing: the lid being interspersed with piston rod is embedded in the cylinder body of cardinal extremity, and being contained in the accumulator forming the ring-type concentric with above-mentioned piston rod in this cylinder body, above-mentioned accumulator possesses: the liner being embedded in the cylindrical shell of the coiling shape of above-mentioned piston rod outward, and the annulus sandwiched between above-mentioned liner and above-mentioned cylinder body and between the outer circumferential face and the inner peripheral surface of above-mentioned cylinder body of above-mentioned liner marks off the bladder of the tubular of the fluid chamber of variable volume, fluid is made to flow into and flow out in above-mentioned fluid chamber and fluid is circulated in above-mentioned cylinder body, and by the fluid resistance of this fluid, above-mentioned piston rod is braked, above-mentioned bladder has the outstanding and slip ridge of the ring-type making external diameter maximum in this bladder of radial outside to this bladder in forward end, above-mentioned cylinder body has the internal diameter of more than the external diameter of above-mentioned slip ridge in the collecting part of the above-mentioned accumulator of collecting, and there is at the end face of the forward end of this collecting part the pressing ridge of to give prominence to towards the terminal side of above-mentioned collecting part and pressing the ring-type of above-mentioned slip ridge to terminal side.
In above-mentioned buffer manufacture process, under the state being embedded in piston rod outside accumulator, insert piston rod from the cardinal extremity of cylinder body to the inside of this cylinder body.Now, because the front end of the bladder forming buffer slides at the inner peripheral surface of cylinder body, so the adjoint front end at bladder applies the frictional force making the front end of this bladder offset at terminal side.This point, according to the buffer of the present invention first viewpoint, the internal diameter due to collecting part is more than the external diameter of slip ridge, therefore in the forward end of accumulator, only contacts to mastery above-mentioned slip ridge relative to the inner peripheral surface of collecting part.Therefore, compare with the situation of the inner peripheral surface of the location contacts cylinder body beyond above-mentioned slip ridge and this slip ridge, the area that bladder and cylinder body contact with each other can be suppressed.Its result, can suppress to make the front end of bladder to offset frictional force continuous action such on bladder at terminal side.And, under the state that accumulator is configured in collecting part, in the forward end pressing ridge pressing slip ridge of collecting part.Therefore, between the inner peripheral surface and slip ridge of cylinder body, although be difficult to obtain relatively high sealing, pass through the contact of the pressing ridge of these ring-types and the slip ridge of ring-type, the sealing of fluid chamber can be guaranteed.And then, situation about reducing in the sealing of cylinder body inner fluid can be suppressed.
According to the second viewpoint of the present invention, a kind of buffer is provided, possesses: the lid being interspersed with piston rod is embedded in the cylinder body of cardinal extremity, and being contained in the accumulator forming the ring-type concentric with above-mentioned piston rod in this cylinder body, above-mentioned accumulator possesses: the liner being embedded in the cylindrical shell of the coiling shape of above-mentioned piston rod outward, and the annulus sandwiched between above-mentioned liner and above-mentioned cylinder body and between the outer circumferential face and the inner peripheral surface of above-mentioned cylinder body of above-mentioned liner marks off the bladder of the tubular of the fluid chamber of variable volume, fluid is made to flow into and flow out in above-mentioned fluid chamber and fluid is circulated in above-mentioned cylinder body, and by the fluid resistance of this fluid, above-mentioned piston rod is braked, above-mentioned bladder has the outstanding and slip ridge of the ring-type making external diameter maximum in this bladder of radial outside to this bladder in forward end, above-mentioned cylinder body has the pressing ridge of to give prominence to towards the terminal side of this collecting part and pressing the ring-type of above-mentioned slip ridge to terminal side at the end face of forward end of the collecting part of the above-mentioned accumulator of collecting, above-mentioned pressing ridge presses above-mentioned slip ridge with the power being greater than above-mentioned slip ridge and pressing the power of the inner peripheral surface of above-mentioned cylinder body.
As mentioned above, in the manufacture process of buffer, apply the frictional force that the front end of this bladder is offsetted at terminal side relative to the front end of bladder.This point, according to the buffer of the present invention second viewpoint, under the state of collecting partial configuration accumulator, in the forward end pressing ridge pressing slip ridge of collecting part.Therefore, by the contact of the pressing ridge of these ring-types and the slip ridge of ring-type, thus the sealing of fluid chamber is guaranteed.Further, by being greater than the power of the power of the inner peripheral surface of slip ridge pressing cylinder body, pressing ridge pressing slip ridge.Therefore, it is possible to suppress the power of slip ridge pressing cylinder body inner peripheral surface, namely suppress above-mentioned frictional force.Its result, can suppress situation about reducing in the sealing of cylinder body inner fluid.
In buffer of the present invention, preferably on above-mentioned cylinder body, there is the forward end that the path part of the internal diameter being less than above-mentioned collecting part and this collecting part are linked to above-mentioned collecting part with one heart, above-mentioned pressing ridge is the ridge to the outstanding ring-type of the axis of above-mentioned piston rod, is provided projectingly on the end face of the above-mentioned collecting part side being linked with above-mentioned path part.
As the structure that the forward end in collecting part makes the internal diameter of cylinder body diminish, the forward end of the path part and collecting part with the internal diameter being less than collecting part links, except such structure, also there is the structure that the ridge outstanding to radially inner side is formed at the inner peripheral surface of cylinder body.But, be formed in the ridge outstanding to radially inner side in the structure of the inner peripheral surface of cylinder body, such as, when ester moulding cylinder body, be difficult to the terminal side drawing mould from cylinder body, manufacture cylinder body itself integratedly and become difficulty.This point, in above-mentioned preferred mode, for the path part and this collecting part with the internal diameter being less than collecting part are linked to the structure of the forward end of collecting part with one heart, and be provided projectingly on the end face of the collecting part that path part links towards the pressing ridge that the terminal side of collecting part is given prominence to.According to such structure, when ester moulding cylinder body itself, also becoming can from the terminal side drawing mould of cylinder body.The number of components of buffer and the time required for the manufacture of buffer is formed therefore, it is possible to reduce.
In the buffer of the present invention second viewpoint, preferably in the forward end of above-mentioned slip ridge, the open end that the peristome being formed with the forward end of above-mentioned bladder bends to radially inner side, above-mentioned open end is hung on the end face of the forward end of above-mentioned liner, sandwiches between the end face of the forward end of above-mentioned liner and the end face of the forward end of above-mentioned collecting part.
In this preferred mode, by the slip ridge of pressing ridge pressing bladder, and the open end of bladder is sandwiched between liner and accommodation section divide.Further, in the forward end of accumulator, the sealing between bladder and cylinder body is guaranteed at two positions of these slip ridges and open end.Its result, can suppress situation about reducing in the sealing of cylinder body inner fluid more reliably.
In buffer of the present invention, preferred above-mentioned liner has the outer sleeve part being embedded in above-mentioned piston rod, above-mentioned sleeve part has the front end boss portion pressing the front end of above-mentioned bladder to above-mentioned cylinder body in front end, and there is at cardinal extremity the cardinal extremity lip part pressing the base end part of above-mentioned bladder to above-mentioned cylinder body, above-mentioned fluid chamber is by above-mentioned sleeve part, above-mentioned front end boss portion, above-mentioned cardinal extremity lip part and above-mentioned bladder divide, above-mentioned front end boss portion has hanging groove in the circumference in this front end boss portion whole, the open end of the forward end of above-mentioned bladder hangs on above-mentioned hanging groove.
According to this preferred mode, the open end due to the forward end of bladder is hung on the hanging groove in whole front end boss portion, and the position being therefore more difficult to the bladder that generation causes due to above-mentioned frictional force offsets.
In buffer of the present invention, preferred above-mentioned front end boss portion has the multiple front end boss sheets pressing the front end of above-mentioned bladder to above-mentioned cylinder body in front end, above-mentioned multiple front end boss sheet is configured at the circumference of above-mentioned liner by the cantilever beam-like supported with the base end part at this front end boss sheet.
According to this preferred mode, form multiple front end boss sheets of the front end to cylinder body pressing bladder in the front end edge circumference of liner, and each of multiple front end boss sheet is formed as at cardinal extremity by the cantilever beam-like supported.According to this structure, above-mentioned frictional force can be exchanged into the power that multiple front end boss sheet is bent.Further, each making multiple front end boss sheet bends to radially inner side, thus makes the reduced diameter of the front end of liner, therefore, it is possible to suppress above-mentioned frictional force as the power offsetted to terminal side by the front end of bladder and situation about playing a role.And then, situation about reducing in the sealing of cylinder body inner fluid can be suppressed.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of a part for the profile construction of the buffer representing the first mode of execution of the present invention.
Fig. 2 is the partial sectional view of a part for the profile construction of the buffer representing the second mode of execution of the present invention.
Fig. 3 is the partial sectional view of a part for the profile construction of the buffer representing the 3rd mode of execution of the present invention.
Fig. 4 (a) is the sectional view of the profile construction representing existing buffer, and Fig. 4 (b) is the figure that the process of assembling accumulator in cylinder body is described.
Embodiment
(the first mode of execution)
Below, about the first mode of execution specializing buffer of the present invention, be described with reference to Fig. 1.In the present embodiment, buffer as the drawer or door etc. that are erected at residential equipment between open-close body and the fixed side parts of fixing open-close body and cushion impact when open-close body and fixed component collide, noise parts and be described.
As shown in Figure 1, be embedded in outside on the resinous liner 10 of piston rod R, be equipped with the bladder 20 of coiling shape.Bladder 20 is the elastomers be made up of synthetic rubber or resin etc., is formed as on the outer circumferential face of liner 10, cover liner 10 overall, on the other hand, makes the two end part of liner 10 open in the axis of piston rod R.
At the cylindrical shell of coiling shape and the center of liner 10, the bar inserting hole 10H of interspersed piston rod R runs through in the axially extended mode along piston rod R.In addition, in liner 10, in the central authorities of the axis of piston rod R, outside cylindric sleeve part 11, be embedded in piston rod R.
In above-mentioned sleeve part 11, in an end of the axis of piston rod R, be formed with the front end boss portion 12 of the cylindrical shape be made up of the external diameter of the external diameter being greater than sleeve part 11 integratedly with sleeve part 11.Front end boss portion 12 has the axially extended stream 12H along piston rod R, makes to circulate between the inside of the forward end of silicone oil in front end boss portion 12 and path part C1 and the radial outside of sleeve part 11.
In addition, the other end of the axis of piston rod R in sleeve part 11, is also formed with the cardinal extremity lip part 13 be made up of the external diameter of the external diameter being greater than sleeve part 11 integratedly with sleeve part 11.Further, if the liner 10 with such profile is configured in cylindric cylinder C, then between the outer circumferential face and the inner peripheral surface of cylinder C of sleeve part 11, the annulus concentric with piston rod R is sandwiched in above-mentioned front end boss portion 12 and is formed with cardinal extremity lip part 13 ground.
In addition, in the axial direction of piston rod R, the side in the front end boss portion 12 relative to sleeve part 11 is set to forward end, the side of the cardinal extremity lip part 13 relative to sleeve part 11 is set to terminal side.
At the base end part of cardinal extremity lip part 13, the extended embedding hole 13H had for the seal ring SR between embedding sealing cardinal extremity lip part 13 and piston rod R of the axis along piston rod R.Be interspersed in the piston rod R of liner 10, via the seal ring SR being embedded in this embedding hole 13H, keep the sealing with liner 10, and move axially relative to liner 10.
Package in the profile of the bladder 20 of above-mentioned liner 10, to be formed as coiling shape according to the outer circumferential face of above-mentioned liner 10.In this bladder 20, in the central authorities of the axis of piston rod R, mark off region and pars contractilis 21 that the radially inner side to piston rod R bends.Pars contractilis 21 is allowed and to be moved between the state of radial outside displacement in the state bent to radially inner side and from this state.In the forward end of this pars contractilis 21, to be closely attached on the mode of the outer circumferential face in front end boss portion 12, mark off the grasping part, front end 22 of the cylindrical shape be made up of the internal diameter of the internal diameter being greater than pars contractilis 21.
Grasping part, front end 22 internal diameter is less than the external diameter in front end boss portion 12, and grasping part, front end 22 grasps above-mentioned front end boss portion 12 having to shrink under the state of the contractile force of radially inner side thus.In addition, the forward end opening portion of grasping part, front end 22 and front opening end 22E, the radially inner side to piston rod R bends.The internal diameter of front opening end 22E and opening inside diameter DL, be less than the internal diameter of above-mentioned path part C1.According to this structure, the front opening end 22E of grasping part, front end 22, hangs over the end face of the forward end in front end boss portion 12.Further, by the front opening end 22E hung, accommodated part and the end face CS of forward end of large diameter portion C2 and the end face of the forward end in front end boss portion 12 and pressed.
On the outer circumferential face of grasping part, front end 22, protrude in the whole circumference of grasping part, front end 22 and be provided with to the outstanding ridge of radial outside and front end slip ridge 22T.Slip ridge 22T in front end is formed as arc-shaped at the section of the axis comprising piston rod R, in addition, is configured at the position a little by terminal side compared with the front end of the grasping part, front end 22 of the axis of piston rod R.The external diameter of this front end slip ridge 22T and ridge outer diameter D H, be greater than the outer diameter D B at other positions of bladder 20, identical with the internal diameter of large diameter portion C2 and cylinder diameter DC.
At the terminal side of above-mentioned pars contractilis 21, to be closely attached on the mode of the outer circumferential face of cardinal extremity lip part 13, mark off the cardinal extremity grasping part 23 of the cylindrical shape be made up of the internal diameter of the internal diameter being greater than pars contractilis 21.The internal diameter of cardinal extremity grasping part 23 is less than the external diameter of cardinal extremity lip part 13, and cardinal extremity grasping part 23 grasps cardinal extremity lip part 13 having to shrink under the state of the contractile force of radially inner side thus.In addition, on the outer circumferential face of cardinal extremity grasping part 23, protrude in the whole circumference of cardinal extremity grasping part 23 and be provided with to the outstanding ridge of radial outside and cardinal extremity slip ridge 23T.The outer surface of cardinal extremity slip ridge 23T is identical with front end slip ridge 22T, is formed as arc-shaped at the section of the axis comprising piston rod R, in addition, is configured at the position of forward a little side compared with the cardinal extremity of the cardinal extremity grasping part 23 of the axis of piston rod R.The external diameter of this cardinal extremity slip ridge 23T, is greater than the ridge outer diameter D H of above-mentioned front end slip ridge 22T, is greater than cylinder diameter DC.
In addition, the forward end opening portion of cardinal extremity grasping part 23, identical with the opening portion of the forward end of grasping part, front end 22, the radially inner side to piston rod R bends.The internal diameter of the peristome of the forward end of cardinal extremity grasping part 23 is greater than the internal diameter of above-mentioned embedding hole 13H, and is less than the external diameter of above-mentioned cardinal extremity lip part 13.Thus, the opening portion of the terminal side of cardinal extremity grasping part is hung on the end face of the terminal side of cardinal extremity lip part 13.
In the inner side surface of large diameter portion C2, on the end face CS of above-mentioned forward end, the pressing ridge CT of the projecting ring-type having the axis along piston rod R to extend to terminal side.Ridge CT is to leave the mode of the front opening end 22E of bladder 20 in pressing, is configured at the radial outside of this front opening end 22E.By the outstanding amount of the pressing ridge CT of this Structure composing, specify as following.Namely, under the state that the end face of forward end and the end face CS of large diameter portion C2 by liner 10 presses front opening end 22E, in the mode of the forward end of above-mentioned front end slip ridge 22T by pressing ridge CT pressing, specify the overhang of above-mentioned pressing ridge CT.
Then, at the buffer be made up of said structure on, effect when to assemble accumulator in cylinder C is described especially.
When assembling above-mentioned buffer, first, package bladder 20 on the outer circumferential face being embedded in the liner 10 of piston rod R outside.Then, the seal ring SR between the embedding hole 13H embedding sealing liner 10 and piston rod R of this liner 10, and, interspersed lid CP on the piston rod R of the terminal side of seal ring SR.Then, inject the cylinder C of path part C1 relative to the oil as fluid, from cardinal extremity and the opening portion insertion piston rod R of this cylinder C.
Now, before the front opening end 22E of bladder 20 abuts the end face CS of the forward end of large diameter portion C2, the grasping part, front end 22 of bladder 20 continues to slide at the inner peripheral surface of large diameter portion C2.Further, this grasping part, front end 22 is continuingly acted on the rightabout frictional force F of direction of insertion inserting piston rod R.On the other hand, the power that grasping part, front end 22 presses the inner peripheral surface of large diameter portion C2 is larger, and such frictional force F is larger; Grasping part, front end 22 is larger with the area of contact of large diameter portion C2 in addition, and the region of its effect is larger.This point, in above-mentioned buffer, because the ridge outer diameter D H of front end slip ridge 22T is identical with the cylinder diameter DC of large diameter portion C2, the power that therefore such front end slip ridge 22T presses large diameter portion C2 also diminishes naturally.In addition, in the outer circumferential face of bladder 20, in its forward end, the inner peripheral surface sliding contact of front end slip ridge 22T and large diameter portion C2, on the other hand, at other position, relative to the inner peripheral surface of large diameter portion C2, bladder 20 is difficult to sliding contact.Therefore, with the structure comparison without such front end slip ridge 22T, above-mentioned frictional force F can be suppressed as rolling the power of grasping part, front end 22 and situation about playing a role.
Further, the front opening end 22E of bladder 20 is connected to the end face CS of large diameter portion C2, embeds cylinder C by lid CP, thus the accumulator be made up of liner 10 and bladder 20 is fixed in large diameter portion C2.Now, as mentioned above, because the ridge outer diameter D H of front end slip ridge 22T is identical with the cylinder diameter DC of large diameter portion C2, therefore the power of the inner peripheral surface of front end slip ridge 22T pressing large diameter portion C2 becomes very little.On the other hand, front opening end 22E is pressed by the end face CS of the end face of the forward end of liner 10 and large diameter portion C2.In addition, in addition, the forward end of above-mentioned front end slip ridge 22T is also pressed ridge CT pressing.Its result, even if under the state pressing the inner peripheral surface of large diameter portion C2 at bladder 20 hardly, between front end slip ridge 22T and pressing ridge CT and between front opening end 22E and end face CS, the sealing between the forward end of large diameter portion C2 and bladder 20 can be guaranteed.In addition, the sealing between cardinal extremity lip part 13 and large diameter portion C2 can be guaranteed between the inner peripheral surface of large diameter portion C2 and cardinal extremity slip ridge 23T.
Like this, if sealed between front end boss portion 12 and large diameter portion C2 and between cardinal extremity lip part 13 and large diameter portion C2, the annulus then formed between the outer circumferential face and the inner peripheral surface of cylinder C of liner 10, is divided into the ring-type of two layers by above-mentioned bladder 20.
Specifically, by sleeve part 11, front end boss portion 12, cardinal extremity lip part 13 and bladder 20, mark off the 3rd space S 3 as fluid chamber.In addition, the 3rd space S 3 is communicated with the outside of accumulator via stream 12H.In addition, except the 3rd such space S 3, by large diameter portion C2, front end boss portion 12, cardinal extremity lip part 13 and bladder 20, mark off the 4th space S 4 as air chamber.Relative to the 4th space S 4, via the intercommunicating pore CH being formed at large diameter portion C2, be communicated with outside cylinder C.
Further, in the buffer be assembled with like this, if piston rod R pushes cylinder C, then by the fluid resistance of silicone oil, piston rod R is braked.Now, a part for the silicone oil in cylinder C, flow into the 3rd space S the 3, three space S 3 via above-mentioned joint-cutting 12S and become large, the change of the volume thus in path part C1 is absorbed by accumulator.In addition, if piston rod R pulls out in cylinder C, then also by the fluid resistance of silicone oil, piston rod R is braked.Further, a part for the silicone oil in cylinder C, flows out from the 3rd space S 3 via above-mentioned joint-cutting 12S, and because the 3rd space S 3 diminishes, the change of the volume thus in path part C1 is absorbed by accumulator.
Below, according to the first mode of execution, obtain the following effect remembered.
(1) the ridge outer diameter D H due to front end slip ridge 22T is identical with cylinder diameter DC, therefore, it is possible to suppress bladder 20 to offset because of frictional force F.And under the state that accumulator is positioned large diameter portion C2, in the forward end of large diameter portion C2, pressing ridge CT is to terminal side pressing front end slip ridge 22T.Therefore, by pressing the contact of ridge CT and front end slip ridge 22T, the sealing of fluid chamber can be guaranteed.And then, the sealing of the fluid in cylinder C can be suppressed.
In addition, as mentioned above, due to bladder 20 can be suppressed to offset because of frictional force F, the bladder 20 when buffer assembles therefore can be suppressed to roll.Therefore, also can improve yield rate and realize reducing costs.
(2) outstanding to the terminal side of large diameter portion C2 pressing ridge CT, is provided projectingly on the end face CS of the forward end of large diameter portion C2.According to such structure, when ester moulding cylinder C itself, also can from the terminal side drawing mould of cylinder C.Therefore, it is possible to reduce the number of components of formation buffer and the time required for buffer manufacture.
(3) the front opening end 22E of bladder 20 sandwiches between liner 10 and large diameter portion C2.According to this structure, except front end slip ridge 22T, even if at front opening end 22E, also can guarantee the sealing between bladder 20 and cylinder C.Its result, can suppress situation about reducing in cylinder C inner fluid sealing more reliably.
(the second mode of execution)
Below, about the second mode of execution specializing buffer of the present invention, be described with reference to Fig. 2.In addition, in this second embodiment, front end boss portion 12, cardinal extremity lip part 13, grasping part, front end 22, cardinal extremity grasping part 23, their structure is different from the first mode of execution.Therefore, the structure below relating generally to them is described, and about the part identical with the first mode of execution, omits the description.
As shown in Figure 2, on the outer circumferential face in front end boss portion 12, the recessed front end hanging groove 12G be provided with along whole circumference.In front end boss portion 12, relative to the external diameter of the forward end of above-mentioned front end hanging groove 12G, compared with the external diameter of the terminal side relative to this front end hanging groove 12G, the only thickness of large bladder 20.In addition, in the hanging groove 12G of this front end, clip piston rod R axis both sides a pair groove sidewall in, its shape is mutually different.Specifically, in a pair above-mentioned groove sidewall, the groove sidewall of terminal side is orthogonal with the axis of piston rod R, and on the other hand, the groove sidewall of forward end is formed as tilting such taper from groove bottom towards channel opening to terminal side.
In addition, at the outer circumferential face of cardinal extremity lip part 13, also in the whole circumference of cardinal extremity lip part 13, be recessed into and be provided with cardinal extremity hanging groove.The shape of this cardinal extremity hanging groove is relative to the face orthogonal with the axis of piston rod R, symmetrical with front end hanging groove 12G.
In the opening portion of the forward end of grasping part, front end 22, the front opening end 22E along the whole circumference of this opening portion is bending to the radially inner side of piston rod R.In the 22E of front opening end, clip piston rod R axis both sides a pair end face in, its shape is mutually different.Specifically, in a pair above-mentioned end face, the end face of terminal side is orthogonal with the axis of piston rod R, and on the other hand, the end face of forward end is formed as tilting such taper from outer surface towards peristome to terminal side.
In addition, the opening portion of the terminal side of cardinal extremity grasping part 23, is also formed to the bending cardinal extremity open end of the radially inner side of piston rod R.The relation of the shape of this cardinal extremity open end and the shape of front opening end 22E, identical with the relation of above-mentioned front end hanging groove 12G and cardinal extremity hanging groove, symmetrical relative to the face orthogonal with the axis of piston rod R.
On the other hand, in the inner side surface of large diameter portion C2, on the end face CS of above-mentioned forward end, the pressing ridge CT of the projecting ring-type having the axis along piston rod R to extend to terminal side.The internal diameter of pressing ridge CT is roughly the same with external diameter maximum in front end boss portion 12, is embedded with the front end in front end boss portion 12 in the inner side of pressing ridge CT.Be decided to be by the outstanding gauge of the pressing ridge CT of such Structure composing, the forward end of above-mentioned front end slip ridge 22T is pressed ridge CT pressing.
Then, at the buffer by above-mentioned Structure composing on, effect when to assemble accumulator in cylinder C is described especially.
According to the front end boss portion 12 be made up of above-mentioned structure and grasping part, front end 22, front opening end 22E is hung on the front end hanging groove 12G in front end boss portion 12.Further, clip a pair end face of axial both sides at front opening end 22E, be adjacent to identical a pair end face clipping axial both sides at front end hanging groove 12G.Thus, the area that front end boss portion 12 contacts with grasping part, front end 22 becomes large result, strengthens the power grasping front end boss portion 12, grasping part, front end 22 can be suppressed further to roll.In addition, on cardinal extremity lip part 13 similarly, the power grasping cardinal extremity lip part 13 is strengthened.
In addition, due to the external diameter of the forward end relative to front end hanging groove 12G, compared with the external diameter of the terminal side relative to this front end hanging groove 12G, the only thickness of large bladder 20, the outer surface therefore in grasping part, front end 22 beyond front end slip ridge 22T is roughly concordant with the outer surface of forward end in front end boss portion 12.
Therefore, when assembling liner 10 in cylinder C, can realize being difficult to produce in the front end of axial forward end grasping part 22 of piston rod R and the inner peripheral surface of large diameter portion C2 interfering, and then the rolling of the grasping part, front end 22 that can suppress to cause due to such interference.
Above, according to the second mode of execution, except the effect of above-mentioned (1) ~ (3) can be obtained, the following effect listed can also be obtained.
(4) because the front opening end 22E of bladder 20 is hung on the front end hanging groove 12G in whole front end boss portion 12, therefore, it is possible to realize the dislocation being more difficult to the bladder that generation causes due to above-mentioned frictional force F.Its result, can suppress the bladder 20 when buffer assembles to be rolled.Also can improve yield rate and realize reducing costs.
(the 3rd mode of execution)
Below, about the 3rd mode of execution specializing buffer of the present invention, be described with reference to Fig. 3.In addition, in the third embodiment, the structure in the front end boss portion 12 of liner 10 is different from the second mode of execution.Therefore, the structure below relating generally to them is described, and about the part identical with the second mode of execution, omits the description.
As shown in Figure 3, on the perisporium and diapire in front end boss portion 12, be equally spaced configured with axially extended 4 the joint-cutting 12S along piston rod R in the circumference of piston rod R.Each of 4 joint-cutting 12S is the axially extended otch along piston rod R, piston rod R axially on the whole width in front end boss portion 12 continuously.That is, the entirety in front end boss portion 12 is circumferentially split by 4 joint-cutting 12S.In addition, each of i.e. 4 the front end boss sheet 12B of part that front end boss portion 12 is split, links with cantilever beam-like at the front end of sleeve part 11.Further, if each of 4 front end boss sheet 12B is subject to the external force of the radially inner side to piston rod R, then each of this 4 front end boss sheet 12B, using the bond sites of this front end boss sheet 12B and sleeve part 11 as fixed end, bends to radially inner side.
Then, illustrate by the buffer of above-mentioned Structure composing particularly accumulator is assemblied in cylinder C on time effect.
When inserting piston rod R in the inside of cylinder C, before the end face of the forward end of bladder 20 is connected to the end face of the forward end of large diameter portion C2, the grasping part, front end 22 of bladder 20 continues to slide at the inner peripheral surface of large diameter portion C2.Further, this grasping part, front end 22 is continuingly acted on the rightabout frictional force F of direction of insertion inserting piston rod R.On the other hand, such frictional force F except as the masterpiece making grasping part, front end 22 roll for except this grasping part, front end 22, also by this grasping part, front end 22, also act on this front end boss portion 12 as the power making front end boss portion 12 to radially inner side (direction of arrow of Fig. 3) displacement.
This point, in above-mentioned buffer, each of 4 front end boss sheet 12B in formation front end boss portion 12 has overhang structure.Therefore, with the structure comparison not having such overhang and construct, above-mentioned frictional force F is easily converted to the power that front end boss portion 12 is bent.In addition, if front end boss sheet 12B bends, then because the area of contact of the outer circumferential face of grasping part, front end 22 and the inner peripheral surface of large diameter portion C2 diminishes, therefore, it is possible to suppress above-mentioned frictional force F to act on grasping part, front end 22.Its result, and does not have the front end boss portion that such overhang constructs and compares, and can above-mentioned frictional force F be suppressed as making the power that grasping part, front end 22 is rolled and situation about playing a role in the amount ground that bends of corresponding front end boss sheet 12B.And then, grasping part, front end 22 can be suppressed to depart from from front end boss portion 12.
Above, according to the 3rd mode of execution, except the effect of above-mentioned (1) ~ (4) can be obtained, the following effect listed can also be obtained.
(5) form multiple front end boss sheet 12B of the front end to cylinder C pressing bladder 20 in the front end edge circumference of liner 10, and each cantilever beam-like supported with cardinal extremity of multiple front end boss sheet 12B is formed.According to this structure, above-mentioned frictional force F is converted to the power that multiple front end boss sheet 12B is bent.Further, to be bent to radially inner side by each making multiple front end boss sheet 12B, thus the reduced diameter of front end due to liner 10, therefore, it is possible to suppress above-mentioned frictional force F to play a role as the power making the front end of bladder 20 offset to terminal side.And then, situation about reducing in the sealing of cylinder C inner fluid can be suppressed.
In addition, as mentioned above, due to bladder 20 can be suppressed to offset because of frictional force F, therefore, it is possible to suppress the bladder 20 when buffer assembles to be rolled.Therefore, also can improve yield rate and realize reducing costs.
In addition, the respective embodiments described above, also can change enforcement as following.
The external diameter of front end slip ridge 22T and ridge outer diameter D H, also can be less than internal diameter and the cylinder diameter DC(DH < DC of large diameter portion C2).Even such structure, also can guaranteed that by front end slip ridge 22T and pressing ridge CT bladder 20 is with on the basis of the sealing of large diameter portion C2, guarantees the function as accumulator.
The external diameter of front end slip ridge 22T and ridge outer diameter D H, also internal diameter and the cylinder diameter DC(DH > DC of large diameter portion C2 can be greater than), as long as pressing ridge CT is to be greater than the power pressing front end slip ridge 22T that slip ridge 22T in front end presses the power of the inner peripheral surface of cylinder C.Even such structure, also can guaranteed that by front end slip ridge 22T and pressing ridge CT bladder 20 is with on the basis of the sealing of large diameter portion C2, suppresses the inner peripheral surface of cylinder C and the sealing of front end slip ridge 22T.
In cardinal extremity grasping part 23, as long as the structure that cardinal extremity lip part 13 is sealed by cardinal extremity grasping part 23 with large diameter portion C2, then also can for omitting the structure of above-mentioned cardinal extremity slip ridge 23T.
As the structure that the forward end of the collecting part at collecting accumulator makes the internal diameter of cylinder C diminish, as mentioned above, except forming except cylinder C by path part C1 and large diameter portion C2, also there is the structure forming the ridge outstanding to radially inner side at the inner peripheral surface of cylinder C.So-called above-mentioned pressing ridge CT, both can be the structure being formed at ridge outstanding in such cylinder C, also can give prominence to towards the terminal side of this collecting part for the end face of the forward end of the collecting part at collecting accumulator, and press the ridge of the ring-type of front end slip ridge 22T.
The shape of the slip ridge 22T side, front end of pressing ridge CT, as long as pressing ridge CT is by the shape be pressed on front end slip ridge 22T.Moreover, as long as the structure of pressing ridge CT and front end slip ridge 22T point cantact, then improve surface pressure in the face of their contacts, also can realize improving sealing.
The internal diameter of pressing ridge CT both can be identical with the external diameter of the front end of accumulator, or also can be greater than the external diameter of its front end.
The direction pressing ridge CT extended can be different from the axis of piston rod R, such as, press ridge CT and also for the tubular diminished towards the cardinal extremity internal diameter of large diameter portion C2, or can become large tubular towards the cardinal extremity internal diameter of large diameter portion C2.That is, as long as press the shape that ridge CT extends from the end face CS of large diameter portion C2 towards cardinal extremity.
The front end hanging groove 12G being formed at front end boss portion 12 also can be more than 2.Now, be hung on these front ends hanging groove 12G each on ridge, be preferably formed in the structure of the inner peripheral surface of grasping part, front end 22.If be such structure, then grasping part, front end 22 can be suppressed further to roll.
As long as be formed at the joint-cutting 12S 2 in front end boss portion 12, also can be the structure of these joint-cuttings of unequal interval ground configuration 12S in addition, as long as form the structure of the front end boss sheet 12B of cantilever beam-like.
Here quote the full content of specification, claims, accompanying drawing and the specification digest of No. 2011-035023rd, the Japanese patent application of application on February 21st, 2011, adopt as the open of specification of the present invention.
Claims (8)
1. a buffer, possesses: the lid being interspersed with piston rod is embedded in the cylinder body of cardinal extremity; And be contained in the accumulator forming the ring-type concentric with above-mentioned piston rod in this cylinder body,
Above-mentioned accumulator possesses:
Be embedded in the liner of the cylindrical shell of the coiling tubular of above-mentioned piston rod outward; And
The annulus sandwiched between above-mentioned liner and above-mentioned cylinder body and between the outer circumferential face and the inner peripheral surface of above-mentioned cylinder body of above-mentioned liner marks off the bladder of the tubular of the fluid chamber of variable volume,
Make fluid flow into and flow out in above-mentioned fluid chamber and fluid is circulated in above-mentioned cylinder body, and by the fluid resistance of this fluid, above-mentioned piston rod braked,
The feature of above-mentioned buffer is,
Above-mentioned bladder has the outstanding and slip ridge of the ring-type making external diameter maximum in this bladder of radial outside to this bladder in forward end,
Above-mentioned cylinder body has the internal diameter of more than the external diameter of above-mentioned slip ridge in the collecting part of the above-mentioned accumulator of collecting, and has the pressing ridge of to give prominence to towards the terminal side of above-mentioned collecting part and pressing the ring-type of above-mentioned slip ridge to terminal side at the end face of the forward end of this collecting part.
2. a buffer, possesses: the lid being interspersed with piston rod is embedded in the cylinder body of cardinal extremity; And be contained in the accumulator forming the ring-type concentric with above-mentioned piston rod in this cylinder body,
Above-mentioned accumulator possesses:
Be embedded in the liner of the cylindrical shell of the coiling tubular of above-mentioned piston rod outward; And
The annulus sandwiched between above-mentioned liner and above-mentioned cylinder body and between the outer circumferential face and the inner peripheral surface of above-mentioned cylinder body of above-mentioned liner marks off the bladder of the tubular of the fluid chamber of variable volume,
Make fluid flow into and flow out in above-mentioned fluid chamber and fluid is circulated in above-mentioned cylinder body, and by the fluid resistance of this fluid, above-mentioned piston rod braked,
The feature of above-mentioned buffer is,
Above-mentioned bladder has the outstanding and slip ridge of the ring-type making external diameter maximum in this bladder of radial outside to this bladder in forward end,
Above-mentioned cylinder body has the pressing ridge of to give prominence to towards the terminal side of this collecting part and pressing the ring-type of above-mentioned slip ridge to terminal side at the end face of forward end of the collecting part of the above-mentioned accumulator of collecting,
Above-mentioned pressing ridge presses above-mentioned slip ridge with the power being greater than above-mentioned slip ridge and pressing the power of the inner peripheral surface of above-mentioned cylinder body.
3. buffer according to claim 1 and 2, is characterized in that,
On above-mentioned cylinder body, there is the forward end that the path part of the internal diameter being less than above-mentioned collecting part and this collecting part are linked to above-mentioned collecting part with one heart,
Above-mentioned pressing ridge is the ridge to the outstanding ring-type of the axis of above-mentioned piston rod, is provided projectingly on the end face of the above-mentioned collecting part side being linked with above-mentioned path part.
4. buffer according to claim 3, is characterized in that,
In the forward end of above-mentioned slip ridge, the open end that the peristome being formed with the forward end of above-mentioned bladder bends to radially inner side,
Above-mentioned open end is hung on the end face of the forward end of above-mentioned liner, sandwiches between the end face of the forward end of above-mentioned liner and the end face of the forward end of above-mentioned collecting part.
5. the buffer according to claim 1,2 or 4, is characterized in that,
Above-mentioned liner has the outer sleeve part being embedded in above-mentioned piston rod,
Above-mentioned sleeve part has the front end boss portion pressing the front end of above-mentioned bladder to above-mentioned cylinder body in front end, and has the cardinal extremity lip part pressing the base end part of above-mentioned bladder to above-mentioned cylinder body at cardinal extremity,
Above-mentioned fluid chamber is divided by above-mentioned sleeve part, above-mentioned front end boss portion, above-mentioned cardinal extremity lip part and above-mentioned bladder,
Above-mentioned front end boss portion has hanging groove in the circumference in this front end boss portion whole,
The open end of the forward end of above-mentioned bladder hangs on above-mentioned hanging groove.
6. buffer according to claim 3, is characterized in that,
Above-mentioned liner has the outer sleeve part being embedded in above-mentioned piston rod,
Above-mentioned sleeve part has the front end boss portion pressing the front end of above-mentioned bladder to above-mentioned cylinder body in front end, and has the cardinal extremity lip part pressing the base end part of above-mentioned bladder to above-mentioned cylinder body at cardinal extremity,
Above-mentioned fluid chamber is divided by above-mentioned sleeve part, above-mentioned front end boss portion, above-mentioned cardinal extremity lip part and above-mentioned bladder,
Above-mentioned front end boss portion has hanging groove in the circumference in this front end boss portion whole,
The open end of the forward end of above-mentioned bladder hangs on above-mentioned hanging groove.
7. buffer according to claim 5, is characterized in that,
Above-mentioned front end boss portion has the multiple front end boss sheets pressing the front end of above-mentioned bladder to above-mentioned cylinder body in front end,
Above-mentioned multiple front end boss sheet is configured at the circumference of above-mentioned liner by the cantilever beam-like supported with the base end part at this front end boss sheet.
8. buffer according to claim 6, is characterized in that,
Above-mentioned front end boss portion has the multiple front end boss sheets pressing the front end of above-mentioned bladder to above-mentioned cylinder body in front end,
Above-mentioned multiple front end boss sheet is configured at the circumference of above-mentioned liner by the cantilever beam-like supported with the base end part at this front end boss sheet.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011035023A JP2012172755A (en) | 2011-02-21 | 2011-02-21 | Damper |
| JP2011-035023 | 2011-02-21 | ||
| PCT/JP2012/053413 WO2012114943A1 (en) | 2011-02-21 | 2012-02-14 | Damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103384779A CN103384779A (en) | 2013-11-06 |
| CN103384779B true CN103384779B (en) | 2015-08-12 |
Family
ID=46720725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280009793.2A Expired - Fee Related CN103384779B (en) | 2011-02-21 | 2012-02-14 | Buffer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2012172755A (en) |
| CN (1) | CN103384779B (en) |
| WO (1) | WO2012114943A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SI3434929T1 (en) * | 2017-07-24 | 2020-09-30 | Industrias Auxiliares, S.A. | Double-sealed gasket for hydraulic shock absorber for use in self-closers in furniture |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05346132A (en) * | 1991-08-30 | 1993-12-27 | Showa:Kk | Manufacture of buffer |
| JP2004011720A (en) * | 2002-06-05 | 2004-01-15 | Kayaba Ind Co Ltd | Sealing structure |
| JP2006132594A (en) * | 2004-11-02 | 2006-05-25 | Showa Corp | Vehicular hydraulic shock absorber |
| JP2007205494A (en) * | 2006-02-02 | 2007-08-16 | Fuji Latex Kk | Shock absorber |
| JP2008025713A (en) * | 2006-07-20 | 2008-02-07 | Fuji Latex Kk | Damper device |
| CN101427049A (en) * | 2006-03-31 | 2009-05-06 | 株式会社利富高 | Speed response type damper and shock-absorbing damper device |
| JP2009168159A (en) * | 2008-01-16 | 2009-07-30 | Fuji Latex Kk | Shock absorber |
| CN201705853U (en) * | 2010-06-29 | 2011-01-12 | 沈秋庆 | Damping buffer |
-
2011
- 2011-02-21 JP JP2011035023A patent/JP2012172755A/en not_active Withdrawn
-
2012
- 2012-02-14 WO PCT/JP2012/053413 patent/WO2012114943A1/en active Application Filing
- 2012-02-14 CN CN201280009793.2A patent/CN103384779B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05346132A (en) * | 1991-08-30 | 1993-12-27 | Showa:Kk | Manufacture of buffer |
| JP2004011720A (en) * | 2002-06-05 | 2004-01-15 | Kayaba Ind Co Ltd | Sealing structure |
| JP2006132594A (en) * | 2004-11-02 | 2006-05-25 | Showa Corp | Vehicular hydraulic shock absorber |
| JP2007205494A (en) * | 2006-02-02 | 2007-08-16 | Fuji Latex Kk | Shock absorber |
| CN101427049A (en) * | 2006-03-31 | 2009-05-06 | 株式会社利富高 | Speed response type damper and shock-absorbing damper device |
| JP2008025713A (en) * | 2006-07-20 | 2008-02-07 | Fuji Latex Kk | Damper device |
| JP2009168159A (en) * | 2008-01-16 | 2009-07-30 | Fuji Latex Kk | Shock absorber |
| CN201705853U (en) * | 2010-06-29 | 2011-01-12 | 沈秋庆 | Damping buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103384779A (en) | 2013-11-06 |
| JP2012172755A (en) | 2012-09-10 |
| WO2012114943A1 (en) | 2012-08-30 |
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