US20100011681A1 - Shock Absorber - Google Patents
Shock Absorber Download PDFInfo
- Publication number
- US20100011681A1 US20100011681A1 US12/176,528 US17652808A US2010011681A1 US 20100011681 A1 US20100011681 A1 US 20100011681A1 US 17652808 A US17652808 A US 17652808A US 2010011681 A1 US2010011681 A1 US 2010011681A1
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- US
- United States
- Prior art keywords
- leak
- flow
- restricting
- proof member
- proof
- 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.)
- Abandoned
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Classifications
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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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/062—Bi-tubular units
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
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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
- F16F9/50—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
- F16F9/516—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 resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/028—Earthquake withstanding shelters
Definitions
- the present invention relates to a shock absorber, and more particularly to a shock absorber which can defeat the inertia to slow the energy compression speed and increase the energy release speed.
- Taiwan is located at the active plate boundary between the Eurasian plate and the Philippine Sea plate.
- the huge pressure generated by the collision between the two plates will cause earthquake, and different quake-hit areas in the same earthquake will have different situations.
- Taiwan has certain knowledge about earthquake, but is still unable to forecast precisely where and when the quake occurs is going to happen. Living in such an unstable geological environment, we can't stop an earthquake, but we can do something to reduce the damage caused by it.
- the primary objective of the present invention is to provide a shock absorber, which can defeat the inertia displacement of the shock absorber to slow the retracting speed to absorb energy and increase the extending speed to release the energy.
- the shock absorber in accordance with the present invention comprises a driving member, a first flow-restricting member, a holder and a second flow-restricting member.
- the driving member includes a driven rod and a piston, one end of the driven rod is assembled with one end of the piston, the piston is formed with a flow-restricting passage.
- the first flow-restricting member includes a through hole for insertion of the piston, and a flow-restricting portion for cooperating with the flow-restricting passage of the piston.
- the holder includes an inner tube, a first leak-proof member, a second leak-proof member, a positioning member and an outer tube, the inner tube is used for insertion of the piston of the driving member, both ends of the inner tube are engaged with the first leak-proof member and the second leak-proof member to define a first inner space, the first leak-proof member is provided for insertion of the driven rod of the driving member, the second leak-proof member includes at least one flow-restricting passage, one end of the flow-restricting passage penetrates one end of the second leak-proof member, and the other end of the flow-restricting passage penetrates a side of the second leak-proof member.
- One end of the positioning member is assembled with one end of the second leak-proof member.
- the first leak-proof member, the inner tube and the second leak-proof member are disposed in the outer tube and define a second inner space.
- the flow-restricting passage of the second leak-proof member communicates with the first inner space and the second inner space, respectively.
- the second flow-restricting member includes a through hole and a flow-restricting portion, the through hole is provided for insertion of the positioning member and assembled with the leak-proof member, and the flow-restricting portion of the second flow-restricting member is provided for cooperating with the second leak-proof member.
- shock absorber in accordance with the present invention has the following advantages:
- the buffer liquid in the shock absorber utilizes the flow-restricting passage, the flow-restricting portion of the first flow-restricting member, the flow-restricting passage of the second leak-proof member and the flow-restricting portion of the second flow-restricting member to cooperate with the first inner space and the second inner space to change the flow speed, respectively to change the flow speed by ways of changing the inner flow passages; and under the condition that the second flow-restricting is restricted by the positioning member, the distance between the second flow-restricting member and the second leak-proof member can be changed with the movement of the piston, when the shock absorber retracts, the speed at which the buffer liquid flows from the first inner space to the second inner space will decrease, when the shock absorber extends, the speed at which the buffer liquid flows from the second inner space to the first inner space will increase, so that the retracting speed of the shock absorber is smaller than the extending speed of the shock absorber.
- the shock absorber retracts more slowly to absorb energy, and the shock absorber extends more quickly to release
- FIG. 1 is an exploded view of a shock absorber in accordance with the present invention
- FIG. 2 is a first cross-sectional view of the shock absorber in accordance with the present invention.
- FIG. 3 is a second cross-sectional view of the shock absorber in accordance with the present invention.
- FIG. 4 illustrates how the shock absorber in accordance with the present invention is used
- FIG. 5 illustrates the state of the shock absorber in accordance with the present invention before the earthquake occurs
- FIG. 6 illustrates the state of the shock absorber in accordance with the present invention after the earthquake occurs.
- FIG. 7 illustrates that the shock absorber in accordance with the present invention is assembled with springs.
- a shock absorber in accordance with the present invention comprises: a driving member 10 , a first flow-restricting member 20 , a holder 30 , a second flow-restricting member 40 and an elastic member 50 .
- the driving member 10 includes a connecting head 11 , a driven rod 12 and a piston 13 .
- the connecting head 11 is formed with a radial restricting hole 111 at one end thereof, and the other end of the connecting head 11 is axially defined with an assembling portion 112 in the form of an inner threaded hole.
- the driven rod 12 is formed at one end thereof with a first assembling portion 121 which is in the form of an outer threaded portion for screwing with the assembling portion 112 of the connecting head 11 , and formed at the other end thereof with a second assembling portion 122 which is in the form of an inner threaded hole to be matched with the piston 13 .
- the piston 13 has one end formed with an assembling portion 131 in the form of an outer threaded portion to be screwed with the second assembling portion 122 of the driven rod 12 .
- Around the outer surface of the piston 13 are defined three spaced-apart grooves 132 for accommodation of two stopping members 133 and a wear-resistance member 134 , respectively.
- the stopping members 133 and the wear-resistance member 134 are all O rings.
- the piston 13 is axially formed with an eccentric flow-restricting passage 135 .
- the first flow-restricting member 20 is a flat piece being axially defined with a central through hole 21 for insertion of the assembling portion 131 of the piston 13 , and at the outer edge of the first flow-restricting member 20 is formed a flow-restricting portion 22 .
- the flow-restricting member 20 is pressed onto the piston 13 by the driven rod 12 in such a manner that the flow-restricting portion 22 of the first flow-restricting member 20 cooperates with the flow-restricting passage 135 .
- the holder 30 includes an inner tube 31 , a first leak-proof member 32 , a second leak-proof member 33 , a positioning member 34 and an outer tube 35 .
- the inner tube 31 is used for axial insertion of the piston 13 of the driving member 10 , such that the piston 13 is in contact with the inner surface 31 of the holder 30 via the stopping members 133 and the wear-resistance 134 .
- the first leak-proof member 32 is axially defined with a through hole 321 in which are disposed a bush 322 , a stopping member 323 and a guiding member 324 , respectively, which are all O rings.
- the through hole 321 of the first leak-proof member 32 is provided for axial insertion of the driven rod 12 of the driving member 10 in such a manner that the first leak-proof member 32 is brought into contact with the outer surface of the driven rod 12 by the bush 322 , stopping member 323 and guiding member 324 .
- Around the outer surface of the first leak-proof member 32 are defined two spaced-apart grooves 325 for accommodation of two stopping members 326 , respectively, which are O rings.
- One end of the first leak-proof member 32 is engaged with one end of the inner tube 31 , and the outer surface of the first leak-proof member 32 abuts against one end inner surface of the outer tube 35 .
- the second leak-proof member 33 is defined in the outer surface thereof with two spaced-apart grooves 331 for accommodation of two stopping members 332 which are all O rings.
- One end of the second leak-proof member 33 is defined with an assembling portion 333 which is cylinder-shaped.
- a groove 334 for accommodation of a stopping member 335 .
- the second leak-proof member 33 is further provided with two flow-restricting passages 336 that are not connected to each other.
- One end of each of the flow-restricting passages 336 penetrates one end of the second leak-proof member 33 , and the other end of each of the flow-restricting passages 336 penetrates a side of the second leak-proof member 33 .
- the other end of the second leak-proof member 33 is axially defined with a connecting head 337 which is formed with a radial restricting hole 338 .
- the positioning member 34 has one end to be axially assembled with the assembling portion 333 of the second leak-proof member 33 .
- the assembling portion 333 of the second leak-proof member 33 is engaged with the other end of the inner tube 31 , and the outer surface of the second leak-proof member 33 abuts against the other end inner surface of the outer tube 35 .
- Both ends of the inner tube 31 are engaged with the first leak-proof member 32 and the second leak-proof member 33 to define a first inner pace A. Subsequently, the first leak-proof member 32 , the inner tube 31 and the second leak-proof member 33 are placed into the outer tube 35 .
- the outer surface of the first leak-proof member 32 is in contact with one end inner surface of the outer tube 32 via the stopping members 326
- the outer surface of the second leak-proof member 33 is in contact with the other end inner surface of the outer tube 35 via the stopping members 332 in such a manner that a second inner space B is defined between the inner tube 31 and the outer tube 35 .
- one end of each of the flow-restricting passages 336 of the second leak-proof member 33 communicates with first inner space A, and the other end of each of the flow-restricting passages 336 of the second leak-proof member 33 communicates with the second inner space B.
- the second flow-restricting member 40 is a flat piece being axially defined with a central through hole 41 for insertion of the positioning member 34 , and at the outer surface of the second flow-restricting member 40 is formed with a flow-restricting portion 42 .
- the elastic member 50 is a spring mounted on the positioning member 34 .
- One end of the elastic member 50 elastically abuts against the positioning member 34
- the other end of the elastic member 50 elastically abuts against the second leak-proof member 33 .
- the first inner space A and the second inner space B of the holder 30 are both pre-filled with an appropriate amount of buffer liquid.
- the restricting hole 111 of the connecting head 11 of the driving member 10 and the restricting hole 338 of the connecting head 337 of the second leak-proof member 33 respectively cooperate with positioning pieces and screws to position the shock absorber in accordance with the present invention between two beams (as shown in FIGS. 4 and 5 ), so that when the beams are subjected to external force to shake (please refer to FIG. 6 ), the driving member 10 and the holder 30 of the shock absorber in accordance with the present invention will extend and retract axially.
- the driving member 10 When the shock absorber in accordance with the present invention retracts, the driving member 10 will utilize the driven rod 12 to drive the piston 13 to move axially from the first leak-proof member 32 to the second leak-proof member 33 in the inner tube 31 , so that the buffer liquid between the piston 13 and the second leak-proof member 33 will be compressed to press the second flow-restricting member 40 to abut against assembling portion 333 of the second leak-proof member 33 closely. As a result, the speed at which the buffer liquid in the first inner space A flow to the second inner space B will decrease.
- the buffer liquid in the space defined between the piston 13 and the second leak-proof member 33 will move toward the space defined between the first leak-proof member 32 and the piston 13 .
- the flow of the buffer liquid will be restricted by the flow-restricting passage 135 of the piston 13 and the flow-restricting portion 22 of the first flow-restricting member 20 , and the flow speed of the buffer liquid can be changed by changing the inner flow passage space.
- the driving member 10 will utilize the driven rod 12 to drive the piston 13 to move axially from the second leak-proof member 33 to the first leak-proof member 32 in the inner tube 31 , and the buffer liquid between the piston 13 and the first leak-proof member 32 will be compressed by the piston, so that the second flow-restricting member 40 will not be pressed to abut against the assembling portion 333 of the second leak-proof member 33 closely.
- the speed at which the buffer liquid in the second inner space B flow to the second inner space B through the flow-restricting passage 336 of the second leak-proof member 33 will increase.
- the buffer liquid in the space defined between the piston 13 and the first leak-proof member 32 will move toward the space defined between the second leak-proof member 33 and the piston 13 .
- the flow of the buffer liquid will be restricted by the flow-restricting passage 135 of the piston 13 and the flow-restricting portion 22 of the first flow-restricting member 20 .
- the flow-restricting passage 135 of the piston 13 and the flow-restricting portion 22 of the first flow-restricting member 20 can provide such a flow speed that the inertia displacement of the shock absorber can be defeated to decrease the retracting speed of the shock absorber to absorb energy and increase the extending speed of the shock absorber to release the energy.
- the flow speed of the buffer liquid can be changed by changing the inner flow passage space.
- the piston 13 is provided with an elastic member 60 at each of two ends thereof in the first inner space A.
- the elastic members 60 are provided to retain and position the shock absorber for preventing the shock absorber from being shaken to deform uncontrollably.
- the above shock absorber is applicable to houses, motorcycles, cars or mechanical equipments.
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Abstract
A shock absorber utilizes an internal passage design and cooperates with at least one flow-restricting member and elastic member to change the flow speed and displacement during the extension and retraction of the shock absorber, so as to make the extending and retracting speeds of the shock absorber different for buffering the shake wave to the house, thus reducing the force shaking the house in the earthquake.
Description
- 1. Field of the Invention
- The present invention relates to a shock absorber, and more particularly to a shock absorber which can defeat the inertia to slow the energy compression speed and increase the energy release speed.
- 2. Description of the Prior Art
- Taiwan is located at the active plate boundary between the Eurasian plate and the Philippine Sea plate. The huge pressure generated by the collision between the two plates will cause earthquake, and different quake-hit areas in the same earthquake will have different situations.
- So far, Taiwan has certain knowledge about earthquake, but is still unable to forecast precisely where and when the quake occurs is going to happen. Living in such an unstable geological environment, we can't stop an earthquake, but we can do something to reduce the damage caused by it.
- The owner of this application, with many years of technology and experiences in the field of shock absorber, has developed a shock absorber which can solve the above problem.
- The primary objective of the present invention is to provide a shock absorber, which can defeat the inertia displacement of the shock absorber to slow the retracting speed to absorb energy and increase the extending speed to release the energy.
- In order to achieve the above objective, the shock absorber in accordance with the present invention comprises a driving member, a first flow-restricting member, a holder and a second flow-restricting member.
- the driving member includes a driven rod and a piston, one end of the driven rod is assembled with one end of the piston, the piston is formed with a flow-restricting passage. The first flow-restricting member includes a through hole for insertion of the piston, and a flow-restricting portion for cooperating with the flow-restricting passage of the piston. The holder includes an inner tube, a first leak-proof member, a second leak-proof member, a positioning member and an outer tube, the inner tube is used for insertion of the piston of the driving member, both ends of the inner tube are engaged with the first leak-proof member and the second leak-proof member to define a first inner space, the first leak-proof member is provided for insertion of the driven rod of the driving member, the second leak-proof member includes at least one flow-restricting passage, one end of the flow-restricting passage penetrates one end of the second leak-proof member, and the other end of the flow-restricting passage penetrates a side of the second leak-proof member. One end of the positioning member is assembled with one end of the second leak-proof member. The first leak-proof member, the inner tube and the second leak-proof member are disposed in the outer tube and define a second inner space. The flow-restricting passage of the second leak-proof member communicates with the first inner space and the second inner space, respectively. The second flow-restricting member includes a through hole and a flow-restricting portion, the through hole is provided for insertion of the positioning member and assembled with the leak-proof member, and the flow-restricting portion of the second flow-restricting member is provided for cooperating with the second leak-proof member.
- To summarize, the shock absorber in accordance with the present invention has the following advantages:
- The buffer liquid in the shock absorber utilizes the flow-restricting passage, the flow-restricting portion of the first flow-restricting member, the flow-restricting passage of the second leak-proof member and the flow-restricting portion of the second flow-restricting member to cooperate with the first inner space and the second inner space to change the flow speed, respectively to change the flow speed by ways of changing the inner flow passages; and under the condition that the second flow-restricting is restricted by the positioning member, the distance between the second flow-restricting member and the second leak-proof member can be changed with the movement of the piston, when the shock absorber retracts, the speed at which the buffer liquid flows from the first inner space to the second inner space will decrease, when the shock absorber extends, the speed at which the buffer liquid flows from the second inner space to the first inner space will increase, so that the retracting speed of the shock absorber is smaller than the extending speed of the shock absorber. The shock absorber retracts more slowly to absorb energy, and the shock absorber extends more quickly to release energy.
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FIG. 1 is an exploded view of a shock absorber in accordance with the present invention; -
FIG. 2 is a first cross-sectional view of the shock absorber in accordance with the present invention; -
FIG. 3 is a second cross-sectional view of the shock absorber in accordance with the present invention; -
FIG. 4 illustrates how the shock absorber in accordance with the present invention is used; -
FIG. 5 illustrates the state of the shock absorber in accordance with the present invention before the earthquake occurs; -
FIG. 6 illustrates the state of the shock absorber in accordance with the present invention after the earthquake occurs; and -
FIG. 7 illustrates that the shock absorber in accordance with the present invention is assembled with springs. - The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
- Referring to
FIGS. 1-3 , a shock absorber in accordance with the present invention comprises: adriving member 10, a first flow-restrictingmember 20, aholder 30, a second flow-restrictingmember 40 and anelastic member 50. - The driving
member 10 includes a connectinghead 11, a drivenrod 12 and apiston 13. - The connecting
head 11 is formed with aradial restricting hole 111 at one end thereof, and the other end of the connectinghead 11 is axially defined with an assembling portion 112 in the form of an inner threaded hole. - The driven
rod 12 is formed at one end thereof with a first assemblingportion 121 which is in the form of an outer threaded portion for screwing with the assembling portion 112 of the connectinghead 11, and formed at the other end thereof with a second assembling portion 122 which is in the form of an inner threaded hole to be matched with thepiston 13. - The
piston 13 has one end formed with an assembling portion 131 in the form of an outer threaded portion to be screwed with the second assembling portion 122 of the drivenrod 12. Around the outer surface of thepiston 13 are defined three spaced-apart grooves 132 for accommodation of two stoppingmembers 133 and a wear-resistance member 134, respectively. The stoppingmembers 133 and the wear-resistance member 134 are all O rings. Thepiston 13 is axially formed with an eccentric flow-restrictingpassage 135. - The first flow-restricting
member 20 is a flat piece being axially defined with a central throughhole 21 for insertion of the assembling portion 131 of thepiston 13, and at the outer edge of the first flow-restrictingmember 20 is formed a flow-restrictingportion 22. When the assembling portion 131 of thepiston 13 is assembled with the second assembling portion 122 of the drivenrod 12, the flow-restrictingmember 20 is pressed onto thepiston 13 by the drivenrod 12 in such a manner that the flow-restrictingportion 22 of the first flow-restrictingmember 20 cooperates with the flow-restrictingpassage 135. - The
holder 30 includes aninner tube 31, a first leak-proof member 32, a second leak-proof member 33, apositioning member 34 and anouter tube 35. - The
inner tube 31 is used for axial insertion of thepiston 13 of thedriving member 10, such that thepiston 13 is in contact with theinner surface 31 of theholder 30 via the stoppingmembers 133 and the wear-resistance 134. - The first leak-
proof member 32 is axially defined with athrough hole 321 in which are disposed abush 322, a stoppingmember 323 and a guidingmember 324, respectively, which are all O rings. Thethrough hole 321 of the first leak-proof member 32 is provided for axial insertion of the drivenrod 12 of thedriving member 10 in such a manner that the first leak-proof member 32 is brought into contact with the outer surface of the drivenrod 12 by thebush 322, stoppingmember 323 and guidingmember 324. Around the outer surface of the first leak-proof member 32 are defined two spaced-apart grooves 325 for accommodation of two stoppingmembers 326, respectively, which are O rings. One end of the first leak-proof member 32 is engaged with one end of theinner tube 31, and the outer surface of the first leak-proof member 32 abuts against one end inner surface of theouter tube 35. - The second leak-
proof member 33 is defined in the outer surface thereof with two spaced-apart grooves 331 for accommodation of two stoppingmembers 332 which are all O rings. One end of the second leak-proof member 33 is defined with an assemblingportion 333 which is cylinder-shaped. Around the outer surface of the second leak-proof member 33 is formed agroove 334 for accommodation of a stoppingmember 335. The second leak-proof member 33 is further provided with two flow-restrictingpassages 336 that are not connected to each other. One end of each of the flow-restrictingpassages 336 penetrates one end of the second leak-proof member 33, and the other end of each of the flow-restrictingpassages 336 penetrates a side of the second leak-proof member 33. The other end of the second leak-proof member 33 is axially defined with a connectinghead 337 which is formed with aradial restricting hole 338. - The
positioning member 34 has one end to be axially assembled with the assemblingportion 333 of the second leak-proof member 33. The assemblingportion 333 of the second leak-proof member 33 is engaged with the other end of theinner tube 31, and the outer surface of the second leak-proof member 33 abuts against the other end inner surface of theouter tube 35. - Both ends of the
inner tube 31 are engaged with the first leak-proof member 32 and the second leak-proof member 33 to define a first inner pace A. Subsequently, the first leak-proof member 32, theinner tube 31 and the second leak-proof member 33 are placed into theouter tube 35. The outer surface of the first leak-proof member 32 is in contact with one end inner surface of theouter tube 32 via thestopping members 326, and the outer surface of the second leak-proof member 33 is in contact with the other end inner surface of theouter tube 35 via thestopping members 332 in such a manner that a second inner space B is defined between theinner tube 31 and theouter tube 35. In addition, one end of each of the flow-restrictingpassages 336 of the second leak-proof member 33 communicates with first inner space A, and the other end of each of the flow-restrictingpassages 336 of the second leak-proof member 33 communicates with the second inner space B. - The second flow-restricting
member 40 is a flat piece being axially defined with a central throughhole 41 for insertion of thepositioning member 34, and at the outer surface of the second flow-restrictingmember 40 is formed with a flow-restrictingportion 42. When thepositioning member 34 is inserted through the throughhole 41 of the second flow-restrictingmember 40 and then assembled with the assemblingportion 333 of the second leak-proof member 33, the second flow-restrictingmember 41 is pressed onto the second leak-proof member 33 by thepositioning member 34 in such a manner that the flow-restrictingportion 42 of the second flow-restrictingmember 40 cooperates the flow-restrictingpassage 336 of the second leak-proof member 33. - The
elastic member 50 is a spring mounted on thepositioning member 34. One end of theelastic member 50 elastically abuts against thepositioning member 34, and the other end of theelastic member 50 elastically abuts against the second leak-proof member 33. - The first inner space A and the second inner space B of the
holder 30 are both pre-filled with an appropriate amount of buffer liquid. The restrictinghole 111 of the connectinghead 11 of the drivingmember 10 and the restrictinghole 338 of the connectinghead 337 of the second leak-proof member 33 respectively cooperate with positioning pieces and screws to position the shock absorber in accordance with the present invention between two beams (as shown inFIGS. 4 and 5 ), so that when the beams are subjected to external force to shake (please refer toFIG. 6 ), the drivingmember 10 and theholder 30 of the shock absorber in accordance with the present invention will extend and retract axially. - When the shock absorber in accordance with the present invention retracts, the driving
member 10 will utilize the drivenrod 12 to drive thepiston 13 to move axially from the first leak-proof member 32 to the second leak-proof member 33 in theinner tube 31, so that the buffer liquid between thepiston 13 and the second leak-proof member 33 will be compressed to press the second flow-restrictingmember 40 to abut against assemblingportion 333 of the second leak-proof member 33 closely. As a result, the speed at which the buffer liquid in the first inner space A flow to the second inner space B will decrease. - While the
piston 13 moves forwards, under the condition that the first inner space A is fixed, the buffer liquid in the space defined between thepiston 13 and the second leak-proof member 33 will move toward the space defined between the first leak-proof member 32 and thepiston 13. The flow of the buffer liquid will be restricted by the flow-restrictingpassage 135 of thepiston 13 and the flow-restrictingportion 22 of the first flow-restrictingmember 20, and the flow speed of the buffer liquid can be changed by changing the inner flow passage space. - When the shock absorber in accordance with the present invention extends, the driving
member 10 will utilize the drivenrod 12 to drive thepiston 13 to move axially from the second leak-proof member 33 to the first leak-proof member 32 in theinner tube 31, and the buffer liquid between thepiston 13 and the first leak-proof member 32 will be compressed by the piston, so that the second flow-restrictingmember 40 will not be pressed to abut against the assemblingportion 333 of the second leak-proof member 33 closely. As a result, the speed at which the buffer liquid in the second inner space B flow to the second inner space B through the flow-restrictingpassage 336 of the second leak-proof member 33 will increase. - While the
piston 13 moves forwards, under the condition that the first inner space A is fixed, the buffer liquid in the space defined between thepiston 13 and the first leak-proof member 32 will move toward the space defined between the second leak-proof member 33 and thepiston 13. The flow of the buffer liquid will be restricted by the flow-restrictingpassage 135 of thepiston 13 and the flow-restrictingportion 22 of the first flow-restrictingmember 20. By such arrangements, the flow-restrictingpassage 135 of thepiston 13 and the flow-restrictingportion 22 of the first flow-restrictingmember 20 can provide such a flow speed that the inertia displacement of the shock absorber can be defeated to decrease the retracting speed of the shock absorber to absorb energy and increase the extending speed of the shock absorber to release the energy. The flow speed of the buffer liquid can be changed by changing the inner flow passage space. - Referring to
FIG. 7 , thepiston 13 is provided with anelastic member 60 at each of two ends thereof in the first inner space A. Theelastic members 60 are provided to retain and position the shock absorber for preventing the shock absorber from being shaken to deform uncontrollably. - The above shock absorber is applicable to houses, motorcycles, cars or mechanical equipments.
- While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims (8)
1. A shock absorber comprising:
a driving member including a driven rod and a piston, the driven rod being formed at one end thereof with an assembling portion, the piston being formed at one end thereof with an assembling portion to be assembled with the assembling portion of the driven rod, the piston being axially formed with a flow-restricting passage;
a first flow-restricting member including a through hole and a flow-restricting portion, the assembling portion of the piston being inserted through the through hole of the first flow-restricting member, and the flow-restricting member being positioned on the piston by the driven rod in such a manner that the flow-restricting portion of the first flow-restricting member cooperates with the flow-restricting passage of the piston;
a holder including an inner tube, a first leak-proof member, a second leak-proof member, a positioning member and an outer tube, the inner tube being used for insertion of the piston of the driving member, the first leak-proof member being axially defined with a through hole for insertion of the driven rod of the driving member, one end of the first leak-proof member being engaged with one end of the inner tube, an outer surface of the first leak-proof member abutting against one end inner surface of the outer tube, one end of the second leak-proof member being engaged with the other end of the inner tube, an outer surface of the second leak-proof member abutting against the other end inner surface of the outer tube, the second leak-proof member including at least one flow-restricting passage, one end of the flow-restricting passage penetrating one end of the second leak-proof member, and the other end of the flow-restricting passage penetrating a side of the second leak-proof member, one end of the positioning member being assembled with one end of the second leak-proof member, the inner tube, the first leak-proof member and the second leak-proof member defining a first inner space, the first leak-proof member, the inner tube and the second leak-proof member being disposed in the outer tube and defining a second inner space, the flow-restricting passage of the second leak-proof member communicating with the first inner space and the second inner space, respectively; and
a second flow-restricting member including a through hole and a flow-restricting portion, the through hole of the second flow-restricting member being provided for insertion of the positioning member and assembled with the second leak-proof member in such a manner that the flow-restricting portion of the second flow-restricting member cooperates with the flow-restricting passage of the second leak-proof member.
2. The shock absorber as claimed in claim 1 further comprising an elastic member between the positioning member and the second leak-proof member, the elastic member being mounted on the positioning member, one end of the elastic member elastically abutting against the positioning member, and the other end of the elastic member elastically abutting against the second leak-proof member.
3. The shock absorber as claimed in claim 1 , wherein the assembling portion of the driven rod of the driving member is in the form of an inner threaded hole, the assembling portion of the piston of the driving member is in the form of an outer threaded portion, around an outer surface of the piston are defined at least two spaced-apart grooves for accommodation of stopping members and wear-resistance members, respectively;
an inner surface of the inner tube of the holder is in contact with the stopping members and wear-resistance members of the piston of the driving member, the through hole of the first leak-proof member is provided with a bush, a stopping member and a guiding member, the first leak-proof member of the holder is brought into contact with an outer surface of the driven rod by the bush, stopping member and guiding member, around the outer surface of the first leak-proof member is defined at least one groove for accommodation of at least one stopping member, around the outer surface of the second leak-proof member is defined at least one groove for accommodation of at least one stopping member, one end of the second leak-proof member is defined with an assembling portion for assembling with one end of the positioning member, the assembling portion of the second leak-proof member is engaged with the inner tube; and
the positioning member is inserted through the second flow-restricting member and then assembled with the assembling portion of the second leak-proof member, so that the second flow-restricting member is positioned on the second leak-proof member by the positioning member.
4. A shock absorber comprising:
a driving member including a driven rod and a piston, the driven rod being assembled with the piston, the piston including a flow-restricting passage;
a first flow-restricting member being mounted on the piston and including a flow-restricting portion, the flow-restricting member being positioned on the piston by the driven rod in such a manner that the flow-restricting portion of the first flow-restricting member cooperates with the flow-restricting passage;
a holder including an inner tube, a first leak-proof member, a second leak-proof member, a positioning member and an outer tube, the inner tube being used for insertion of the piston of the driving member, the first leak-proof member being axially defined with a through hole for insertion of the driven rod of the driving member, one end of the first leak-proof member being engaged with one end of the inner tube, an outer surface of the first leak-proof member abutting against one end inner surface of the outer tube, one end of the second leak-proof member being engaged with the other end of the inner tube, an outer surface of the second leak-proof member abutting against the other end inner surface of the outer tube, the second leak-proof member including at least one flow-restricting passage, one end of the flow-restricting passage penetrating one end of the second leak-proof member, and the other end of the flow-restricting passage penetrating a side of the second leak-proof member, one end of the positioning member being assembled with one end of the second leak-proof member, the inner tube, the first leak-proof member and the second leak-proof member defining a first inner space, the first leak-proof member, the inner tube and the second leak-proof member being disposed in the outer tube and defining a second inner space, the flow-restricting passage of the second leak-proof member communicating with the first inner space and the second inner space, respectively; and
a second flow-restricting member being provided for insertion of the positioning member and assembled with the second leak-proof member, the second flow-restricting member including a flow-restricting portion, between the positioning member and the second leak-proof member is disposed an elastic member mounted on the positioning member, one end of the elastic member elastically abutting against the positioning member, and the other end of the elastic member elastically abutting against the second leak-proof member, the second flow-restricting member cooperates with the flow-restricting passage of the second leak-proof member.
5. The shock absorber as claimed in claim 4 , wherein the driven rod is formed at one end thereof with an assembling portion, the piston is formed at one end thereof with an assembling portion to be assembled with the assembling portion of the driven rod, the piston is axially formed with the flow-restricting passage.
6. The shock absorber as claimed in claim 4 , wherein:
the driven rod of the driving member is in the form of an inner threaded hole, the piston of the driving member is in the form of an outer threaded portion, around an outer surface of the piston are defined at least two spaced-apart grooves for accommodation of stopping members and wear-resistance members, respectively;
an inner surface of the inner tube of the holder is in contact with the stopping members and wear-resistance members of the piston of the driving member, the through hole of the first leak-proof member is provided with a bush, a stopping member and a guiding member, the first leak-proof member of the holder is brought into contact with an outer surface of the driven rod by the bush, stopping member and guiding member, around the outer surface of the first leak-proof member is defined at least one groove for accommodation of at least one stopping member, around the outer surface of the second leak-proof member is defined at least one groove for accommodation of at least one stopping member, one end of the second leak-proof member is defined with an assembling portion for assembling with one end of the positioning member, the assembling portion of the second leak-proof member is engaged with the inner tube; and
the positioning member is inserted through the second flow-restricting member and then assembled with the assembling portion of the second leak-proof member, so that the second flow-restricting member is positioned on the second leak-proof member by the positioning member.
7. A shock absorber comprising a driving member, a first flow-restricting member, a second flow-restricting member and an elastic member; wherein:
the driving member includes a connecting head, a driven rod and a piston, the connecting head is formed with a radial restricting hole at one end thereof, and the other end of the connecting head is axially defined with an assembling portion in the form of an inner threaded hole, the driven rod is formed at one end thereof with a first assembling portion which is in the form of an outer threaded portion for screwing with the assembling portion of the connecting head, and formed at the other end thereof with a second assembling portion which is in the form of an inner threaded hole to be matched with the piston, the piston is formed at one end thereof with an assembling portion in the form of an outer threaded portion to be screwed with the second assembling portion of the driven rod, around an outer surface of the piston are defined three spaced-apart grooves for accommodation of two stopping members and a wear-resistance member, respectively, the stopping members and the wear-resistance member are all O rings, the piston is axially formed with an eccentric flow-restricting passage;
the first flow-restricting member is a flat piece being axially defined with a central through hole for insertion of the assembling portion of the piston, and at an outer edge of the first flow-restricting member is formed a flow-restricting portion, When the assembling portion of the piston is assembled with the second assembling portion of the driven rod, the flow-restricting member is pressed onto the piston by the driven rod in such a manner that the flow-restricting portion of the first flow-restricting member cooperates with the flow-restricting passage;
the holder includes an inner tube, a first leak-proof member, a second leak-proof member, a positioning member and an outer tube, the inner tube is used for axial insertion of the piston of the driving member, such that the piston is in contact with an inner surface of the holder via the stopping members and the wear-resistance, the first leak-proof member is axially defined with a through hole in which are disposed a bush, a stopping member and a guiding member, respectively, which are all O rings, the through hole of the first leak-proof member is provided for axial insertion of the driven rod of the driving member in such a manner that the first leak-proof member is brought into contact with the outer surface of the driven rod by the bush, stopping member and guiding member, around an outer surface of the first leak-proof member are defined two spaced-apart grooves for accommodation of two stopping members, respectively, which are O rings, one end of the first leak-proof member is engaged with one end of the inner tube, and the outer surface of the first leak-proof member abuts against one end inner surface of the outer tube, the second leak-proof member is defined in an outer surface thereof with two spaced-apart grooves for accommodation of two stopping members which are all O rings, one end of the second leak-proof member is defined with an assembling portion which is cylinder-shaped, around the outer surface of the second leak-proof member is formed a groove for accommodation of a stopping member, the second leak-proof member is further provided with two flow-restricting passages that are not connected to each other, one end of each of the flow-restricting passages penetrates one end of the second leak-proof member, and the other end of each of the flow-restricting passages penetrates a side of the second leak-proof member, the other end of the second leak-proof member is axially defined with a connecting head which is formed with a radial restricting hole, the positioning member has one end to be axially assembled with the assembling portion of the second leak-proof member, the assembling portion of the second leak-proof member is engaged with the other end of the inner tube, and the outer surface of the second leak-proof member abuts against the other end inner surface of the outer tube, both ends of the inner tube are engaged with the first leak-proof member and the second leak-proof member to define a first inner pace, subsequently, the first leak-proof member, the inner tube and the second leak-proof member are placed into the outer tube, the outer surface of the first leak-proof member is in contact with the one end inner surface of the outer tube via the stopping members, and the outer surface of the second leak-proof member is in contact with the other end inner surface of the outer tube via the stopping members in such a manner that a second inner space is defined between the inner tube and the outer tube, one end of each of the flow-restricting passages of the second leak-proof member communicates with first inner space, and the other end of each of the flow-restricting passages of the second leak-proof member communicates with the second inner space;
the second flow-restricting member is a flat piece being axially defined with a central through hole for insertion of the positioning member, and at an outer surface of the second flow-restricting member is formed with a flow-restricting portion, when the positioning member is inserted through the through hole of the second flow-restricting member and then assembled with the assembling portion of the second leak-proof member, the second flow-restricting member is pressed onto the second leak-proof member by the positioning member in such a manner that the flow-restricting portion of the second flow-restricting member cooperates with the flow-restricting passage of the second leak-proof member; and
the elastic member is a spring mounted on the positioning member, one end of the elastic member elastically abuts against the positioning member, and the other end of the elastic member elastically abuts against the second leak-proof member;
8. The shock absorber as claimed in claim 7 , wherein the piston is provided with an elastic member at each of two ends thereof in the first inner space, the elastic members of the piston are provided for retaining and positioning the shock absorber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/176,528 US20100011681A1 (en) | 2008-07-21 | 2008-07-21 | Shock Absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/176,528 US20100011681A1 (en) | 2008-07-21 | 2008-07-21 | Shock Absorber |
Publications (1)
Publication Number | Publication Date |
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US20100011681A1 true US20100011681A1 (en) | 2010-01-21 |
Family
ID=41529026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/176,528 Abandoned US20100011681A1 (en) | 2008-07-21 | 2008-07-21 | Shock Absorber |
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CN103510636A (en) * | 2013-10-15 | 2014-01-15 | 北京工业大学 | Assembled viscous double-sub-energy-dissipation device |
CN103541453A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Wave-shaped soft steel node damper |
US20140077055A1 (en) * | 2012-09-19 | 2014-03-20 | Chevron U.S.A Inc.. | Bracing assembly |
US20160298352A1 (en) * | 2013-12-02 | 2016-10-13 | The Governing Council Of The University Of Toronto | System for mitigating the effects of a seismic event |
US9732517B1 (en) * | 2016-06-06 | 2017-08-15 | Chun-Hao Huang | Earthquake resistant and reinforcing device for buildings and bridges |
US10400469B2 (en) | 2013-12-02 | 2019-09-03 | The Governing Council Of The University Of Toronto | System for mitigating the effects of a seismic event |
US10480143B1 (en) * | 2018-05-18 | 2019-11-19 | United States Of America As Represented By The Secretary Of The Army | Pile bridge assembly |
US10954685B1 (en) * | 2018-03-30 | 2021-03-23 | Southeast University | Self-centering cable with metal-based energy-dissipation |
CN114382192A (en) * | 2022-01-11 | 2022-04-22 | 北京科技大学 | Relay type shape memory alloy wire damper and manufacturing method thereof |
CN115405145A (en) * | 2022-07-28 | 2022-11-29 | 西安建筑科技大学 | Assembled variable damping shock absorption device and shock absorption method and concrete frame node |
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