WO2014196368A1 - 防振装置 - Google Patents
防振装置 Download PDFInfo
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- WO2014196368A1 WO2014196368A1 PCT/JP2014/063582 JP2014063582W WO2014196368A1 WO 2014196368 A1 WO2014196368 A1 WO 2014196368A1 JP 2014063582 W JP2014063582 W JP 2014063582W WO 2014196368 A1 WO2014196368 A1 WO 2014196368A1
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- Prior art keywords
- chamber
- rectifying
- liquid chamber
- vibration
- liquid
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
- F16F13/105—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
- F16F13/107—Passage design between working chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1208—Resilient supports
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
Definitions
- the present invention relates to a vibration isolator that is applied to, for example, automobiles and industrial machines and absorbs and attenuates vibrations of a vibration generating unit such as an engine.
- This application claims priority based on Japanese Patent Application No. 2013-116890 for which it applied to Japan on June 3, 2013, and uses the content here.
- the vibration isolator includes a cylindrical first mounting member connected to one of the vibration generating unit and the vibration receiving unit, a second mounting member connected to the other, and an elastic connecting the both mounting members. And a partition member that divides the body and the liquid chamber in the first mounting member in which the liquid is sealed into a main liquid chamber and an auxiliary liquid chamber each having an elastic body as a part of the wall surface.
- the partition member is formed with a restriction passage that communicates the main liquid chamber and the sub liquid chamber.
- the restriction passage includes a first restriction passage that causes liquid column resonance with respect to an input of idle vibration, and a second restriction passage that causes liquid column resonance with respect to an input of shake vibration.
- the partition member is provided with a plunger member.
- the plunger member is moved to open and close the first restriction passage, thereby switching the restriction passage through which the liquid flows between the main liquid chamber and the sub liquid chamber.
- the liquid flows through the first restriction passage when the idle vibration is input, and the liquid flows through the second restriction passage when the shake vibration is input.
- the conventional vibration isolator has room for improvement in terms of simplification of the structure and simplification of manufacture.
- the present invention has been made in view of the above-described circumstances, and an object thereof is to provide a vibration isolator capable of simplifying the structure and simplifying manufacture.
- a first aspect of the vibration isolator includes a cylindrical first mounting member connected to one of the vibration generating unit and the vibration receiving unit, a second mounting member connected to the other, and these An elastic body that connects the two mounting members, and a liquid chamber in the first mounting member in which a liquid is sealed, are divided into a main liquid chamber and a sub liquid chamber having the elastic body as a part of a wall surface.
- a limiting passage that connects the main liquid chamber and the sub liquid chamber is formed in the partition member, and the limiting path is a first that causes resonance with respect to an input of idle vibration.
- An anti-vibration device including a restriction passage and a second restriction passage that causes resonance with respect to an input of shake vibration, wherein the partition member includes the main liquid chamber or the sub liquid chamber and the first liquid passage.
- a rectifying chamber communicating with the restriction passage is provided, and the rectifying chamber is shake-vibrated. The liquid that has been introduced into rectifying the swirling flow on input.
- the vibration isolator according to the present invention can simplify the structure and simplify the manufacturing.
- FIG. 3 is an AA cross-sectional view of the partition member shown in FIG.
- FIG. 3 is a BB cross-sectional view of the partition member shown in FIG.
- the vibration isolator 10 includes a cylindrical first mounting member 11 connected to one of a vibration generating unit and a vibration receiving unit, and a second mounting member 12 connected to the other.
- An elastic body 13 that elastically connects the first mounting member 11 and the second mounting member 12, a liquid chamber 14 in the first mounting member 11 in which the liquid L is sealed, and the elastic body 13 as a part of the wall surface.
- a partition member 17 that is divided into a main liquid chamber 15 on one side and a sub liquid chamber 16 on the other side.
- this liquid-filled vibration isolator 10 When this liquid-filled vibration isolator 10 is mounted on, for example, an automobile, the second mounting member 12 is connected to an engine as a vibration generating unit, while the first mounting member 11 is connected to a vehicle body as a vibration receiving unit. As a result, the vibration of the engine is prevented from being transmitted to the vehicle body. In this vibration isolator 10, positive pressure acts on the main liquid chamber 15 based on the support load at the time of mounting.
- the first mounting member 11 is formed in a cylindrical shape, in the illustrated example, in a multistage cylindrical shape.
- the direction along the axis O of the first mounting member 11 is referred to as the axial direction
- the main liquid chamber 15 side with respect to the partition member 17 along the axial direction is referred to as one side in the axial direction
- the auxiliary liquid chamber 16 side is referred to as the other side of the axial direction
- the direction orthogonal to the axis O is referred to as the radial direction
- the direction around the axis O is referred to as the circumferential direction.
- the second mounting member 12 is disposed at one end of the first mounting member 11 located on one side in the axial direction.
- the second attachment member 12 is formed in a columnar shape arranged coaxially with the axis O.
- the elastic body 13 is separately bonded to the inner peripheral surface of one end of the first mounting member 11 and the outer peripheral surface of the second mounting member 12, and closes one end of the first mounting member 11.
- the other end of the first mounting member 11 located on the other side in the axial direction is closed by a diaphragm 18.
- the liquid chamber 14 is a portion located between the elastic body 13 and the diaphragm 18 in the first mounting member 11, and a liquid such as ethylene glycol, water, or silicone oil is contained in the liquid chamber 14.
- L is filled and a partition member 17 is disposed.
- the hydraulic pressure in the main liquid chamber 15 fluctuates when the elastic body 13 is deformed and the internal volume of the main liquid chamber 15 changes when vibration is input.
- the auxiliary liquid chamber 16 includes the diaphragm 18 as a part of the wall surface, and expands and contracts when the diaphragm 18 is deformed.
- the partition member 17 is provided with restriction passages 21 and 22 and rectifying chambers 23 and 24.
- the restriction passages 21 and 22 communicate with the main liquid chamber 15 and the sub liquid chamber 16 and include a first restriction passage 21 (idle orifice) and a second restriction passage 22 (shake orifice).
- the first restriction passage 21 causes liquid column resonance with respect to an input of idle vibration (for example, a frequency of 18 Hz to 30 Hz and an amplitude of ⁇ 0.5 mm or less).
- the second restriction passage 22 causes liquid column resonance with respect to an input of shake vibration (for example, the frequency is 14 Hz or less and the amplitude is greater than ⁇ 0.5 mm) whose frequency is lower than that of the idle vibration.
- first restriction passage 21 In the state where the flow resistance of the first restriction passage 21 is smaller than the flow resistance of the second restriction passage 22 and the main liquid chamber 15 and the sub liquid chamber 16 are communicated with each other through the first restriction passage 21.
- L circulates through the first restriction passage 21 more actively than the second restriction passage 22.
- the first restriction passage 21 and the second restriction passage 22 are independent from each other in the partition member 17 and do not serve as a flow path.
- the second restriction passage 22 is provided on the outer peripheral portion of the partition member 17.
- the second restriction passage 22 includes a circumferential groove 22a, a main-side opening 22b, and a sub-side opening 22c.
- the circumferential groove 22 a is provided on the outer circumferential surface of the partition member 17 so as to extend in the circumferential direction, and is closed from the radially outer side by the inner circumferential surface of the first mounting member 11. Of both ends in the circumferential direction of the circumferential groove 22a, one end communicates with the main liquid chamber 15 through the main opening 22b, and the other end communicates with the sub liquid chamber 16 through the sub opening 22c. is doing.
- the first restriction passage 21 is disposed on the inner side of the partition member 17 in the radial direction with respect to the second restriction passage 22.
- the first restriction passage 21 includes passage chambers 21a and 21b, a storage chamber 21c, and communication holes 21d and 21e.
- a pair of passage chambers 21 a and 21 b are provided, and each passage chamber 21 a and 21 b constitutes an end portion of the first restriction passage 21. Both passage chambers 21a and 21b have the same shape and the same size by reversing in the axial direction.
- the passage chambers 21 a and 21 b are formed in a circular shape in a plan view as viewed from the axial direction, and are arranged coaxially with the axis O.
- the first passage chamber 21a located on the main liquid chamber 15 side is formed in a bottomed shape that opens toward one side in the axial direction, and is located on the sub liquid chamber 16 side.
- the second passage chamber 21b is formed in a top shape that opens toward the other side in the axial direction.
- the storage chamber 21c is disposed between the passage chambers 21a and 21b, and is located between the bottom surface of the first passage chamber 21a and the top surface of the second passage chamber 21b.
- the storage chamber 21 c is formed in a circular shape in the plan view and is disposed coaxially with the axis O.
- the communication holes 21d and 21e communicate the passage chambers 21a and 21b with the storage chamber 21c.
- the communication holes 21d and 21e include a first communication hole 21d that communicates the first passage chamber 21a and the storage chamber 21c, and a second communication hole 21e that communicates the second passage chamber 21b and the storage chamber 21c. I have.
- a plurality of first communication holes 21d are arranged at intervals in the circumferential direction on the bottom surface of the first passage chamber 21a.
- the first communication hole 21d is formed in a long hole shape extending in the circumferential direction.
- the plurality of first communication holes 21d are arranged so as to be rotationally symmetric with respect to the axis O in the plan view.
- a plurality of second communication holes 21e are arranged at intervals in the circumferential direction on the top surface of the second passage chamber 21b.
- the second communication hole 21e is formed in a long hole shape extending in the circumferential direction.
- the plurality of second communication holes 21e are arranged to be rotationally symmetric with respect to the axis O in the plan view.
- the movable plate 25 is accommodated in the accommodation chamber 21c.
- the movable plate 25 is a so-called play membrane that is formed of an elastic material such as a rubber material and is housed in the housing chamber 21c so as to be displaceable relative to the partition member 17 in the axial direction.
- the mode of the displacement of the movable plate 25 in the axial direction varies depending on the frequency of the input vibration.
- the movable plate 25 communicates the main liquid chamber 15 and the sub liquid chamber 16 through the storage chamber 21c when the idle vibration is input, and the main liquid chamber 15 and the sub liquid chamber 16 that pass through the storage chamber 21c when the shake vibration is input.
- the axial displacement is made relative to the partition member 17 so as to block the communication.
- the rectifying chambers 23 and 24 communicate the main liquid chamber 15 or the auxiliary liquid chamber 16 with the first restriction passage 21.
- the rectifying chambers 23 and 24 include a first rectifying chamber 23 that communicates the main liquid chamber 15 and the first restricting passage 21, and a second rectifying chamber 24 that communicates the sub-liquid chamber 16 and the first restricting passage 21. Is provided. Both the rectification chambers 23 and 24 are disposed so as to sandwich the first restriction passage 21 in the axial direction. Both the rectification chambers 23 and 24 are communicated with each other through the first restriction passage 21, and the first restriction passage 21 is provided between the rectification chambers 23 and 24 so as to extend in the axial direction.
- Both rectification chambers 23 and 24 are formed in the same shape and size. Both the rectifying chambers 23 and 24 are formed in a circular shape having a larger diameter than the passage chambers 21a and 21b in the plan view, and are arranged coaxially with the axis O (first mounting member 11). Both the rectification chambers 23 and 24 are formed so that the liquid L flowing into the rectification chambers can be rectified into a swirl flow. Both the rectifying chambers 23 and 24 rectify the liquid L flowing into the inside from the main liquid chamber 15 side and the liquid L flowing into the inside from the sub liquid chamber 16 side into a swirl flow.
- the first rectification chamber 23 rectifies the liquid L flowing into the inside from the main liquid chamber 15 side into a swirl flow
- the second rectification chamber 24 flows into the inside from the sub liquid chamber 16 side.
- the liquid L is rectified into a swirling flow.
- Both the swirling flow in the first rectifying chamber 23 and the swirling flow in the second rectifying chamber 24 swirl in the circumferential direction.
- the swirling flow in the first rectifying chamber 23 and the swirling flow in the second rectifying chamber 24 swirl toward the opposite sides along the circumferential direction.
- the wall surfaces of both the rectifying chambers 23 and 24 are provided with rectifying openings 26a and 26b and flow openings 27a and 27b.
- the rectifying openings 26 a and 26 b are disposed on the inner peripheral surfaces of the rectifying chambers 23 and 24, and open in the circumferential direction toward the rectifying chambers 23 and 24.
- One rectifying opening 26a, 26b is provided in each rectifying chamber 23, 24.
- the rectifying openings 26a and 26b communicate with the main liquid chamber 15 or the sub liquid chamber 16 through the introduction paths 28a and 28b.
- the introduction paths 28a and 28b extend linearly in a direction along an orthogonal plane orthogonal to the axis O.
- the introduction paths 28a and 28b extend in the tangential direction of the virtual circle with the axis O as the center.
- the rectifying chambers 23 and 24 are swirled by flowing the liquid L flowing into the rectifying openings 26a and 26b through the introduction passages 28a and 28b along the inner peripheral surfaces of the rectifying chambers 23 and 24. Rectify to
- the distribution openings 27 a and 27 b allow the liquid L rectified into a swirling flow in both the rectifying chambers 23 and 24 to flow out of the both rectifying chambers 23 and 24.
- the flow openings 27a and 27b open in the rectifying chambers 23 and 24 in the axial direction, and are located on the inner side in the radial direction than the rectifying openings 26a and 26b.
- the circulation openings 27 a and 27 b are formed in a circular shape in the plan view and are arranged coaxially with the axis O.
- the circulation openings 27a and 27b are directly connected to the opening ends of the passage chambers 21a and 21b, and are formed in the same shape and size as the opening end and coaxially in the plan view.
- the rectifying openings 26a and 26b, the circulation openings 27a and 27b, and the introduction paths 28a and 28b those provided in the first rectification chamber 23 are respectively referred to as the first rectification opening 26a and the first circulation opening.
- the part 27a and the first introduction path 28a are referred to.
- the rectifying openings 26a and 26b, the circulation openings 27a and 27b, and the introduction paths 28a and 28b the ones provided in the second rectification chamber 24 are respectively the second rectification opening 26b, the second circulation opening 27b, This is referred to as a second introduction path 28b.
- the flow velocity of the liquid L flowing into the rectifying chambers 23 and 24 is determined by the product of the amplitude of the input vibration and the vibration frequency of the input vibration.
- the shake vibration has a larger amplitude than the idle vibration and the flow velocity of the liquid L is also large.
- both the attachment members 11 and 12 are relatively displaced while elastically deforming the elastic body 13, and the hydraulic pressure in the main liquid chamber 15 changes.
- a large amount of the liquid L in the main liquid chamber 15 flows into the first rectifying chamber 23 through the first introduction path 28a and the first rectifying opening 26a.
- the liquid L having an increased flow velocity flows into the rectifying chamber 23. Therefore, the liquid L is filled in the first rectifying chamber 23 with the liquid L flowing into the rectifying chamber 23 filled therein. It flows into the chamber 23 and tries to turn. At this time, the liquid L in the auxiliary liquid chamber 16 flows in a large amount per unit time into the second rectifying chamber 24 through the second introduction path 28b and the second rectifying opening 26b according to the amplitude of the shake vibration. In a state where the inside of the second rectifying chamber 24 is filled with the liquid L that has flowed into the inside, the liquid L further flows into the second rectifying chamber 24 and tries to turn.
- the flow resistance between the main liquid chamber 15 and the sub liquid chamber 16 through the rectifying chambers 23 and 24 and the first restricting passage 21 increases, so that the liquid L is separated from the main liquid chamber 15 and the sub liquid. It preferentially circulates between the chamber 16 through the second restriction passage 22, and liquid injection resonance occurs in the second restriction passage 22 to absorb and attenuate the shake vibration.
- the movable plate 25 is partitioned within the storage chamber 21 c so as to abut against the wall surface of the storage chamber 21 c and close the communication holes 21 d and 21 e. It is displaced relative to the member 17 in the axial direction. Therefore, the liquid L is restricted from flowing through the first restriction passage 21.
- the movable plate 25 may alternately block the first communication hole 21d and the second communication hole 21e, or may continue to block one of the first communication hole 21d and the second communication hole 21e.
- the movable plate 25 is relatively displaced in the axial direction with respect to the partition member 17 in the storage chamber 21c so as to be spaced apart from the wall surface of the storage chamber 21c and open the communication holes 21d and 21e.
- the main liquid chamber 15 and the sub liquid chamber 16 communicate with each other through the passage 21.
- the movable plate 25 may be displaced alternately on both sides in the axial direction, for example, in a state of being separated from the inner surface of the storage chamber 21c.
- the first restriction passage 21 can be actively circulated in the liquid L through the introduction passages 28a and 28b, the rectifying openings 26a and 26b, and the circulation openings 27a and 27b. Resonance occurs and idle vibration is absorbed and damped.
- both the rectifying chambers 23 and 24 are provided in place of the plunger member as in the prior art, thereby absorbing both shake vibration and idle vibration.
- the vibration damping device 10 can be simplified and the structure thereof can be simplified.
- Both the rectifying chambers 23 and 24 rectify the liquid L flowing into the inside from the main liquid chamber 15 side and the liquid L flowing into the inside from the sub liquid chamber 16 side into a swirling flow. Therefore, when shake vibration is input, the liquid L in the main liquid chamber 15 flows to the sub liquid chamber 16 through the rectifying chambers 23 and 24 and the first restriction passage 21, and the liquid L in the sub liquid chamber 16 flows. Both of the rectifying chambers 23 and 24 and the first restriction passage 21 can be restricted from flowing into the main liquid chamber 15. As a result, the second restriction passage 22 can be more preferentially circulated in the liquid L.
- the first rectifying chamber 23 rectifies the liquid L flowing into the inside from the main liquid chamber 15 side into a swirling flow
- the second rectifying chamber 24 swirls the liquid L flowing into the inside from the sub liquid chamber 16 side. Rectify into a stream. Therefore, it is possible to suppress the liquid L in the main liquid chamber 15 and the sub liquid chamber 16 from reaching the first restriction passage 21 when the shake vibration is input, so that the shake vibration can be reliably absorbed and attenuated. it can.
- the liquid L can be passed through the first restriction passage 21 through the first restricting passage 21 when a shake vibration is input, by a simple configuration in which the mode of displacement of the movable plate 25 in the axial direction is changed according to the frequency of the input vibration. It is possible to restrict the flow between the sub liquid chamber 16 and the sub liquid chamber 16. Accordingly, a shake vibration having a small amplitude is inputted, and the main liquid chamber 15 and the sub liquid chamber 16 that have passed through the rectifying chambers 23 and 24 and the first restriction passage 21 by the swirling flow in the rectifying chambers 23 and 24 are input. Even when it is difficult to sufficiently increase the flow resistance between the liquid L and the liquid L, it is possible to restrict the liquid L from flowing through the first restriction passage 21. As a result, the second restriction passage 22 can be reliably circulated through the liquid L.
- both the rectifying chambers 23 and 24 rectify the liquid L flowing into the inside from the rectifying opening portions 26a and 26b along the inner peripheral surfaces of the both rectifying chambers 23 and 24 into a swirling flow
- the liquid L can be reliably rectified into a swirl flow with a simple configuration.
- the flow openings 27a and 27b open in the axial direction in the rectifying chambers 23 and 24, and are located on the inner side in the radial direction than the rectifying openings 26a and 26b. Therefore, until the liquid L rectified into the swirl flow in both the rectifying chambers 23 and 24 flows out of the flow openings 27a and 27b, the liquid L can be retained in both the rectifying chambers 23 and 24 for a long time. it can.
- the first restricting passage 21 is provided with the containing chamber 21c in which the movable plate 25 is housed, and the movable plate 25 passes through the first restricting passage 21 when the idle vibration is input. 15 and the secondary liquid chamber 16 are communicated with each other, and the first liquid passage 15 and the secondary liquid chamber 16 are blocked from communicating with each other through the first restriction passage 21 when a shake vibration is input.
- the mounting member 11 may be accommodated so as to be displaceable in the axial direction.
- the movable plate 25 when shake vibration is input, the movable plate 25 is displaced in the axial direction in the storage chamber 21c so as to block the communication between the main liquid chamber 15 and the sub liquid chamber 16 through the first restriction passage 21.
- the movable plate 25 restricts the liquid from flowing through the first restriction passage 21, and the liquid flows through the second restriction passage 22.
- the movable plate 25 when an idle vibration is input, the movable plate 25 is displaced in the axial direction in the storage chamber 21c so that the main liquid chamber 15 and the sub liquid chamber 16 that have passed through the first restriction passage 21 communicate with each other.
- the first restriction passage 21 can be actively distributed.
- the vibration isolator 10 a simple configuration in which the mode of displacement of the movable plate 25 in the axial direction is changed according to the frequency of the input vibration, so that the liquid is first limited when the shake vibration is input. It is possible to restrict the flow between the main liquid chamber 15 and the sub liquid chamber 16 through the passage 21. Accordingly, a shake vibration having a small amplitude is inputted, and the main liquid chamber 15 and the sub liquid chamber 16 that have passed through the rectifying chambers 23 and 24 and the first restriction passage 21 by the swirling flow in the rectifying chambers 23 and 24 are input.
- both the rectification chambers 23 and 24 are arrange
- the rectifying openings 26a and 26b that open in the circumferential direction of the member 11 are provided, and both the rectifying chambers 23 and 24 allow the liquid that has flowed into the rectifying openings 26a and 26b to flow into the rectifying chambers.
- the flow may be rectified into a swirl flow by flowing along the inner peripheral surface.
- both the rectifying chambers 23 and 24 rectify into a swirling flow by causing the liquid flowing into the inside from the rectifying openings 26a and 26b to flow along the inner peripheral surfaces of the both rectifying chambers 23 and 24.
- the liquid can be reliably rectified into a swirl flow with a simple configuration.
- the technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
- the movable plate 25 and the introduction paths 28a and 28b may not be provided.
- the rectifying openings 26a and 26b are provided in each of the rectifying chambers 23 and 24.
- the present invention is not limited to this.
- a plurality of rectifying openings may be provided in each rectifying chamber.
- straightening chamber 23 which connects the main liquid chamber 15 and the 1st restriction
- path 21 rectifies the liquid L which flowed into the inside from the main liquid chamber 15 side into a swirl flow
- the first rectification chamber that communicates the main liquid chamber and the first restriction passage may rectify the liquid that has flowed into the sub liquid chamber from the side into the swirling flow.
- the second rectifying chamber 24 communicating the sub liquid chamber 16 and the first restricting passage 21 rectifies the liquid L flowing into the sub liquid chamber 16 from the swirl flow.
- the second rectification chamber that communicates the auxiliary liquid chamber and the first restriction passage may rectify the liquid that has flowed into the inside from the main liquid chamber side into a swirling flow.
- both the rectifying chambers 23 and 24 are provided with the first rectifying chamber 23 and the second rectifying chamber 24.
- the present invention is not limited to this.
- only the first rectifying chamber may be provided, or only the second rectifying chamber may be provided. That is, the rectifying chamber may be appropriately changed to another configuration that rectifies the liquid that has flowed into the vortex flow when the shake vibration is input.
- the vibration isolator 10 was set as the structure which a positive pressure acts on the main liquid chamber 15 based on a support load, it is not restricted to this, For example, a negative pressure is applied to a main liquid chamber based on a support load.
- the structure which acts may be sufficient.
- the 1st attachment member 11 is connected with the vibration receiving part and the 2nd attachment member 12 is connected with the vibration generation part, it is not restricted to this.
- the first mounting member may be connected to the vibration generating unit, and the second mounting member may be connected to the vibration receiving unit.
- the main liquid chamber 15 and the sub liquid chamber 16 have different structures.
- the present invention is not limited to this, and the main liquid chamber 15 and the sub liquid chamber 16 You may have the same structure. That is, in the above embodiment, the main liquid chamber 15 and the sub liquid chamber 16 may be formed in the same shape and size in the same manner as the rectifying chambers 23 and 24 are formed in the same shape and size. Good.
- the vibration isolator 10 according to the present invention is not limited to the engine mount of the vehicle, and can be applied to other than the engine mount.
- the present invention can be applied to a mount of a generator mounted on a construction machine, or can be applied to a mount of a machine installed in a factory or the like.
- the vibration isolator according to the present invention can simplify the structure and simplify the manufacturing.
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- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
本願は、2013年6月3日に日本国に出願された特願2013-116890号に基づき優先権を主張し、その内容をここに援用する。
この防振装置では、振動が入力されたときにプランジャ部材を移動させて第1制限通路を開閉することで、主液室と副液室との間で液体が流通する制限通路を切り替える。これにより、アイドル振動の入力時には液体が第1制限通路を流通し、シェイク振動の入力時には液体が第2制限通路を流通する。
図1に示すように、防振装置10は、振動発生部および振動受部のうちのいずれか一方に連結される筒状の第1取付け部材11、および他方に連結される第2取付け部材12と、第1取付け部材11および第2取付け部材12を弾性的に連結する弾性体13と、液体Lが封入された第1取付け部材11内の液室14を、弾性体13を壁面の一部とする一方側の主液室15と他方側の副液室16とに区画する仕切り部材17と、を備えている。
弾性体13は、第1取付け部材11の一端部の内周面および第2取付け部材12の外周面に各別に接着されていて、第1取付け部材11の一端部を閉塞している。
制限通路21、22は、主液室15と副液室16とを連通し、第1制限通路21(アイドルオリフィス)と、第2制限通路22(シェイクオリフィス)と、を備えている。
第1制限通路21と第2制限通路22とは、仕切り部材17内において互いに独立していて、流路が兼用されていない。
連通孔21d、21eは、通路室21a、21bと収容室21cとを連通する。連通孔21d、21eには、第1通路室21aと収容室21cとを連通する第1連通孔21dと、第2通路室21bと収容室21cとを連通する第2連通孔21eと、が備えらえている。
第2連通孔21eは、第2通路室21bの頂面に、周方向に間隔をあけて複数配置されている。第2連通孔21eは、周方向に延在する長穴状に形成されている。複数の第2連通孔21eは、前記平面視において、軸線Oを基準として回転対称となるように配置されている。
整流開口部26a、26bは、両整流室23、24の内周面に配設され、両整流室23、24内に向けて周方向に開口している。整流開口部26a、26bは、各整流室23、24に1つずつ設けられている。整流開口部26a、26bは、導入路28a、28bを通して主液室15または副液室16に連通している。導入路28a、28bは、軸線Oに直交する直交面に沿う方向に直線状に延びている。導入路28a、28bは、軸線Oを中心とする仮想円の接線方向に延びている。両整流室23、24は、導入路28a、28bを通して整流開口部26a、26bから内部に流入された液体Lを、この両整流室23、24の内周面に沿って流動させることで旋回流に整流する。
防振装置10において、前記軸方向にシェイク振動が入力されると、両取付け部材11、12が弾性体13を弾性変形させながら相対的に変位して主液室15の液圧が変動する。このシェイク振動の振幅に応じて、主液室15内の液体Lが単位時間当たり多量に、第1導入路28aおよび第1整流開口部26aを通して第1整流室23内に流入する。すなわち、シェイク振動の入力時には流速が高められた液体Lが整流室23内へ流入するため、内部に流入した液体Lにより第1整流室23内が満たされた状態で、液体Lが第1整流室23内に流入して旋回しようとする。またこのとき、シェイク振動の振幅に応じて、副液室16内の液体Lが単位時間あたり多量に、第2導入路28bおよび第2整流開口部26bを通して第2整流室24内に流入し、内部に流入した液体Lにより第2整流室24内が満たされた状態で、さらに液体Lが第2整流室24内に流入して旋回しようとする。
以上により、両整流室23、24および第1制限通路21を通した主液室15と副液室16との間の流通抵抗が上昇することから、液体Lが、主液室15と副液室16との間で第2制限通路22を通して優先的に流通し、第2制限通路22内で液注共振が生じてシェイク振動が吸収および減衰される。
以上により、液体Lに、導入路28a、28b、整流開口部26a、26bおよび流通開口部27a、27bを通して第1制限通路21を積極的に流通させることが可能になり、第1制限通路21内で共振が生じてアイドル振動が吸収および減衰される。
さらに流通開口部27a、27bが、両整流室23、24内に前記軸方向に開口し、整流開口部26a、26bよりも前記径方向の内側に位置している。そのため、両整流室23、24内で旋回流に整流された液体Lが流通開口部27a、27bから流出するまで、この液体Lを、長時間にわたって両整流室23、24内に滞留させることができる。これにより、両整流室23、24および第1制限通路21を通した主液室15と副液室16との間の流通抵抗を確実に上昇させることができる。
また、前記実施形態では、第1制限通路21には、内部に可動板25が収容された収容室21cが備えられ、可動板25は、アイドル振動の入力時に第1制限通路21を通して主液室15と副液室16とを連通させ、シェイク振動の入力時に第1制限通路21を通した主液室15と副液室16との連通を遮断するように、収容室21c内に、第1取付け部材11の軸方向に変位自在に収容されていてもよい。
この場合、シェイク振動の入力時には、可動板25が、第1制限通路21を通した主液室15と副液室16との連通を遮断するように、収容室21c内で前記軸方向に変位することで、液体が第1制限通路21を流通することが可動板25により規制され、液体が第2制限通路22を流通する。一方、アイドル振動の入力時には、可動板25が、第1制限通路21を通した主液室15と副液室16とを連通させるように、収容室21c内で前記軸方向に変位し、液体に、第1制限通路21を積極的に流通させることができる。
この防振装置10によれば、入力される振動の周波数に応じて可動板25の前記軸方向への変位の態様を異ならせるという簡便な構成によって、シェイク振動の入力時に、液体が第1制限通路21を通して主液室15と副液室16との間で流通するのを規制することができる。したがって、シェイク振動のうち、振幅が小さいものが入力され、両整流室23、24内の旋回流により両整流室23、24および第1制限通路21を通した主液室15と副液室16との間の流通抵抗を十分に高め難い場合であっても、液体が第1制限通路21を流通するのを規制することが可能になり、液体に第2制限通路22を確実に流通させることができる。
また、前記実施形態では、両整流室23、24は、第1取付け部材11と同軸に配置され、両整流室23、24の壁面には、両整流室23、24内に向けて第1取付け部材11の周方向に開口する整流開口部26a、26bが設けられ、両整流室23、24は、整流開口部26a、26bから内部に流入された前記液体を、この両23、24整流室の内周面に沿って流動させることで旋回流に整流してもよい。
この場合、両整流室23、24が、整流開口部26a、26bから内部に流入された液体を、この両整流室23、24の内周面に沿って流動させることで旋回流に整流するので、液体を、簡素な構成で確実に旋回流に整流することができる。
例えば、可動板25、導入路28a、28bはなくてもよい。
さらに前記実施形態では、第1取付け部材11が振動受部に連結され、第2取付け部材12が振動発生部に連結されているが、これに限られない。例えば、第1取付け部材が振動発生部に連結され、第2取付け部材が振動受部に連結されてもよい。
さらに前記実施形態では、図1に示されるように、主液室15と副液室16とが異なる構造を有しているが、これに限られず、主液室15と副液室16とが同じ構造を有してもよい。即ち、前記実施形態において、両整流室23、24が互いに同形同大に形成されているのと同様に、主液室15と副液室16とが互いに同形同大に形成されてもよい。
11 第1取付け部材
12 第2取付け部材
13 弾性体
14 液室
15 主液室
16 副液室
17 仕切り部材
21 第1制限通路
22 第2制限通路
23 第1整流室
24 第2整流室
25 可動板
26a、26b 整流開口部
27a、27b 流通開口部
L 液体
Claims (8)
- 振動発生部および振動受部のうちの一方に連結される筒状の第1取付け部材、および他方に連結される第2取付け部材と、
これらの両取付け部材を連結する弾性体と、
液体が封入された前記第1取付け部材内の液室を、前記弾性体を壁面の一部とする主液室と、副液室と、に区画する仕切り部材と、を備え、
前記仕切り部材には、前記主液室と前記副液室とを連通する制限通路が形成され、
前記制限通路は、アイドル振動の入力に対して共振を生じさせる第1制限通路と、シェイク振動の入力に対して共振を生じさせる第2制限通路と、を備えた防振装置であって、
前記仕切り部材には、前記主液室または前記副液室と前記第1制限通路とを連通する整流室が設けられ、
前記整流室は、シェイク振動の入力時に内部に流入された前記液体を旋回流に整流する防振装置。 - 請求項1記載の防振装置であって、
前記整流室は、前記主液室側から内部に流入された前記液体、および前記副液室側から内部に流入された前記液体それぞれを旋回流に整流する防振装置。 - 請求項2記載の防振装置であって、
前記整流室として、
前記主液室と前記第1制限通路とを連通し、前記主液室側から内部に流入された前記液体を旋回流に整流する第1整流室と、
前記副液室と前記第1制限通路とを連通し、前記副液室側から内部に流入された前記液体を旋回流に整流する第2整流室と、が備えられている防振装置。 - 請求項1から3のいずれか1項に記載の防振装置であって、
前記第1制限通路には、内部に可動板が収容された収容室が備えられ、
前記可動板は、アイドル振動の入力時に前記第1制限通路を通して前記主液室と前記副液室とを連通させ、シェイク振動の入力時に前記第1制限通路を通した前記主液室と前記副液室との連通を遮断するように、前記収容室内に、前記第1取付け部材の軸方向に変位自在に収容されている防振装置。 - 請求項1から3のいずれか1項に記載の防振装置であって、
前記整流室は、前記第1取付け部材と同軸に配置され、
前記整流室の壁面には、前記整流室内に向けて前記第1取付け部材の周方向に開口する整流開口部が設けられ、
前記整流室は、前記整流開口部から内部に流入された前記液体を、この整流室の内周面に沿って流動させることで旋回流に整流する防振装置。 - 請求項4記載の防振装置であって、
前記整流室は、前記第1取付け部材と同軸に配置され、
前記整流室の壁面には、前記整流室内に向けて前記第1取付け部材の周方向に開口する整流開口部が設けられ、
前記整流室は、前記整流開口部から内部に流入された前記液体を、この整流室の内周面に沿って流動させることで旋回流に整流する防振装置。 - 請求項5記載の防振装置であって、
前記整流室の壁面には、前記整流室内で旋回流に整流された前記液体を、前記整流室の外部に流出させる流通開口部が設けられ、
前記流通開口部は、前記整流室内に前記第1取付け部材の軸方向に開口し、前記整流開口部よりも前記第1取付け部材の径方向の内側に位置する防振装置。 - 請求項6記載の防振装置であって、
前記整流室の壁面には、前記整流室内で旋回流に整流された前記液体を、前記整流室の外部に流出させる流通開口部が設けられ、
前記流通開口部は、前記整流室内に前記第1取付け部材の軸方向に開口し、前記整流開口部よりも前記第1取付け部材の径方向の内側に位置する防振装置。
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CN201480030162.8A CN105247240B (zh) | 2013-06-03 | 2014-05-22 | 隔振装置 |
JP2015521380A JP6028099B2 (ja) | 2013-06-03 | 2014-05-22 | 防振装置 |
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JP6274927B2 (ja) * | 2014-03-17 | 2018-02-07 | 株式会社ブリヂストン | 防振装置 |
JP6300406B2 (ja) * | 2014-04-24 | 2018-03-28 | 株式会社ブリヂストン | 防振装置 |
JP6355242B2 (ja) * | 2014-06-05 | 2018-07-11 | 株式会社ブリヂストン | 防振装置 |
CN110573763B (zh) * | 2017-04-27 | 2021-10-29 | 株式会社普利司通 | 隔振装置 |
WO2021187226A1 (ja) | 2020-03-19 | 2021-09-23 | 西尾 満彦 | コンクリート型枠パネル |
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US9759285B2 (en) | 2017-09-12 |
EP3006771B1 (en) | 2019-07-03 |
CN105247240A (zh) | 2016-01-13 |
EP3006771A1 (en) | 2016-04-13 |
JPWO2014196368A1 (ja) | 2017-02-23 |
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