196results about "Solid based dampers" patented technology

The invention provides a performance failure experiment device for a gapless viscous damper, and relates to the technical field of viscous damper performance failure experiments. A control panel is mounted on the front side of the top of the damper positioning part; a damper supporting part is mounted in the center of the top of the damper positioning part; the right side of the damper positioning part is provided with the performance experiment part. A liquid leakage detection part is mounted on the damper positioning part; an extrusion moving part is mounted on the damper positioning part; two groups of movable limiting parts are mounted at the top of the liquid leakage detection part; the viscous damper is supported, and continuous friction between the outer wall of the viscous damper and the experimental device is avoided; the problems that the service life of the experimental device is affected and the outer wall of the viscous damper is abraded due to continuous friction between the outer wall of the viscous damper and the experimental device when a performance failure experiment is carried out due to lack of a supporting structure generally are solved.

The invention provides a vertical liquid damper which comprises a closed container, buffer liquid, a horizontal partition part and a horizontal energy dissipation part, a base connected with an external structure to be subjected to vibration reduction is arranged at the bottom of the closed container, and the interior of the closed container is divided into at least two independent closed cavities by the horizontal partition part; each closed cavity is filled with the buffer liquid flowing in a collision mode, the horizontal energy dissipation pieces are arranged in the closed cavities, each horizontal energy dissipation piece comprises a middle hollow channel and a peripheral baffle, and the peripheral baffle is provided with a pore structure for the buffer liquid to pass through in the vertical movement process. The device has the advantages of effective dissipation of vertical vibration energy, simple structure and the like.

The utility model discloses a double-order viscous damper which comprises a cylinder body, a first piston rod and a second piston rod, a first piston head and a second piston head are respectively provided with a plurality of flow holes, the flow hole of the first piston head is communicated with two first damping liquid cavities, and the flow hole of the second piston head is communicated with two second damping liquid cavities. A flowing hole of the second piston head is communicated with the first damping liquid cavity and the second damping liquid cavity located on the right side, the flowing hole comprises two horn sections and a straight flow section, the inner diameter of the straight flow section is constant, the horn sections are connected to the two ends of the straight flow section, and the inner diameters of the horn sections are gradually reduced from the end away from the straight flow section to the end close to the straight flow section. The flow holes in the first piston head and the second piston head are used for guiding the internal viscous damping medium, so that friction is generated between the viscous damping medium and the flow holes, double-stage energy consumption is achieved, and the damping capacity is improved.

The utility model provides a variable damping force viscous damper which comprises a cylinder barrel, bushings connected to the two ends of the cylinder barrel, a piston movably arranged in the cylinder barrel, a piston rod penetrating through the center of the piston, with the two ends penetrating through center holes of the bushings and extending outwards, and damping fluid filled in a closed cavity defined by the cylinder barrel, the bushings, the piston and the piston rod. An annular outer gap is formed between the outer wall of the piston and the inner wall of the cylinder barrel, the variable-diameter guide rod is arranged in an open hole of the piston in a penetrating mode, and the two ends of the variable-diameter guide rod are fixedly arranged on the lining in an inserted mode. The inner diameter of the open hole is larger than the outer diameter of the first rod body and the outer diameter of the second rod body, and when the piston moves to the first rod body and the second rod body, a first annular inner gap and a second annular inner gap which are different in width can be formed between the inner wall of the open hole and the outer wall of the variable-diameter guide rod, so that the overflowing area of a damping liquid flowing channel is changed, and the variable damping force effect is achieved.

The invention relates to a damper (30, 40, 50) for a semiconductor technology system (1, 101), comprising at least one damping element (31, 41, 51) and two adjacent components (43.1, 43.2, 53.1, 53.2). The damping element (31, 41, 51) comprises a shape memory material with at least one main damping direction, and the damping element (31, 41, 51) is connected to the components (43.1, 43.2, 53.1, 53.2) such that tensile and compressive forces can be transmitted at least in the main damping direction. The damper (30, 40, 50) is characterized in that the damper (30, 40, 50) comprises an elastic element (42, 52.1, 52.2) for generating a mechanical restoring force in the direction of the main damping direction. The invention further relates to a damping arrangement (60) comprising a damper (30, 40, 50) according to one of the explained embodiments. The invention further relates to a system for semiconductor lithography (1, 101) comprising a damper (30, 40, 50) according to one of the explained embodiments and / or a damping arrangement (60) according to one of the explained embodiments.

In order to achieve all the purposes mentioned above and that will emerge from the detailed description below, the present invention is related to a vibration energy damping mechanism (10) having at least one fixing element (20) that can be connected with at least one first structural member (90) and at least one second structural member (100) in order to increase the resistance of structures against events that cause vibrations, such as earthquakes. Accordingly, its novelty is that it comprises at least one plate (30) configured between said at least two fixing elements (20), and in order to increase the load capacity and energy damping capacity of the structural system by increasing the displacements as a result of vibrations, it comprises at least two friction regions (I) having at least one disk (40) providing damping as a result of friction by being positioned between at least two elements that have the degree of freedom to move relative to each other during vibration.

A bottom dampener can be provided for a can rack system. The bottom dampener can dampen forces exerted on a bottom of the can rack system by cans inserted into the can rack system. The bottom dampener can include a curved pad, which can fit into a bottom flap of the can rack system. The curved pad can be used for dampening a force exerted by a can on the bottom flap. The bottom dampener can also include one or more tabs. Each of the tabs can fit into a hole along the bottom flap to removably couple the bottom dampener to the can rack system.

The viscous damper comprises a round cylinder, the top end of the round cylinder is in threaded connection with a sealing cover, a piston block is connected into the round cylinder in a sliding mode, a movable rod is fixed to the top face of the piston block, the top end of the movable rod penetrates through the sealing cover, the movable rod is connected with the piston block in a sliding mode, and a throttling hole is formed in the top face of the piston block. An anti-loosening mechanism used for preventing the sealing cover from loosening is arranged on the circular barrel, a mounting groove is formed in the inner circumferential wall of the circular barrel, a sealing ring is fixed to the inner bottom wall of the mounting groove, and a sealing ring plate is fixed to the bottom face of the sealing cover. According to the viscous damper, the piston block is driven to move through the movable rod, throttling resistance can be generated when fluid passes through the throttling hole, then the damping and anti-seismic effects are achieved, the sealing cover is in threaded connection with the circular barrel, so that the sealing cover is convenient to disassemble and assemble, the damper is disassembled, then the fluid is replaced, and an inner cavity of the circular barrel, the piston block and the movable rod are maintained; and the damping and anti-seismic effects of the damper in subsequent use are guaranteed.

The invention discloses a liquid damping shock absorber which comprises an outer shell (6) and a middle shaft (2) and is characterized in that the outer shell (6) is in a barrel shape, the middle shaft (2) is installed at the bottom of the barrel through an axial supporting mechanism (14), a damping barrel is arranged in the outer shell (6) and installed on the middle shaft (2), and the damping barrel is of a cavity structure with an elastic gap in the lower bottom face. The upper end of the middle shaft (2) penetrates out of the center of an upper end cover (3) of the outer shell (6), damping liquid is contained in the outer shell (6), and the liquid level of the damping liquid is higher than the lower bottom face of the damping cylinder. According to the shock absorber, the damping liquid and the damping cylinder are organically combined, the damping cylinder extrudes the damping liquid when the shock absorber is subjected to an external load, vibration energy is counteracted through viscous dissipation and dynamic pressure generated by liquid shaking, gaps can be changed when pressure is received by the porous structure characteristics of the bottom of the damping cylinder, and the flow of the damping liquid penetrating through the gaps is influenced; therefore, the damping of the shock absorber is variable.

The utility model discloses a sliding type damping box, including upper connecting plate and the box of being located below upper connecting plate, the lower part fixedly connected with plunger of upper connecting plate, the right baffle and left baffle of opposite setting are equipped with in box inner chamber seal, the cavity formed by right baffle, left baffle and box is equipped with damping liquid, the lower part of plunger is inserted into damping liquid, the lower part both sides of upper connecting plate are fixedly connected with the right support plate and left support plate of inserting into the inner chamber of box, and the lower end of right support plate and left support plate respectively abuts with the sliding body of a plurality of located at the bottom of box. The utility model discloses the lower end of right support plate and left support plate abuts with a plurality of sliding bodies, can be used to bear the weight load of equipment, realizes the horizontal free sliding under heavy load working condition, can improve the friction damping effect of right support plate and left support plate through rubber pad, improves the damping effect of damper, makes up the problem that damper damping force is not enough in high temperature environment, guarantees the damping effect of damper.

The present application relates to a kind of three-dimensional pendulum tuning liquid inductance device, the inductance device includes tuning liquid column damper and tuning mass inductance container, tuning liquid column damper includes swing arm, ball hinge end head, swing arm connector, annular water tank and tuning liquid, swing arm one end is connected with ball hinge end head, the other end is connected with annular water tank by swing arm connector, tuning liquid is filled in annular water tank;Tuning mass inductance container is installed in the lower portion of tuning liquid column damper, ball hinge end head is connected with the structure to be damped, annular water tank swings and drives tuning mass inductance container to carry out energy consumption, the inductance device tuning period is adjustable.Compared with prior art, the present application has can control the vibration in each direction of the structure to be controlled, wide range of use;The parameters of each component can be flexibly adjusted to achieve the best damping effect, while tuning mass inductance container can realize the energy absorption of input structure with smaller space and achieve the two goals of energy dissipation and reduction of upper tuning liquid mass.

The invention provides a viscous damping device based on efficient heat dissipation, and belongs to the field of building anti-seismic equipment. The damper comprises a viscous damping assembly, an upper gusset plate and a lower gusset plate, the viscous damping assembly comprises a cylinder body, a piston rod, two bushings and a piston, the upper gusset plate is hinged to the end, located outside the cylinder body, of the piston rod, an upper mounting plate is fixedly mounted at the top of the upper gusset plate, and a connecting body is fixedly mounted at the end, away from the upper gusset plate, of the cylinder body; the lower gusset plate is hinged to the end, away from the cylinder body, of the connecting body, a plurality of heat conduction rods distributed in an annular array are slidably installed on the piston in a penetrating mode, and a plurality of natural graphite flakes are fixedly installed on the positions, close to the two ends, of the outer walls of the heat conduction rods. The viscous damping device based on efficient heat dissipation has the advantages that an efficient passive heat dissipation link is arranged in the cylinder body, active one-way auxiliary heat dissipation can be achieved, a heat dissipation fin convenient disassembly and maintenance structure is arranged, and the telescopic amplitude of the piston rod can be accurately recorded.

The utility model provides a buffer. The buffer comprises a cylinder body, a piston and a ball body, a liquid cavity used for containing viscous liquid is formed in the cylinder body. The piston is arranged in the liquid cavity in a sliding manner; the piston divides the liquid cavity into a pressure cavity and a non-pressure cavity; a passage communicated with the pressure cavity and the non-pressure cavity is arranged in the piston; the passage is provided with a ball seat structure on one side of the pressure cavity, and the ball body is movably arranged in the pressure cavity and is matched with the ball seat structure to open and close the passage or adjust the flow speed and flow of the viscous liquid passing through the passage by adjusting the size of the cross section of the passage at the ball seat structure. According to the utility model, the structure is more compact, and the extruded area of the elastic air bag is larger, so that the contraction ratio is larger under the same liquid pressure, and the adjusting capability is greatly improved.

A damper device and an electronic apparatus are provided. The damper device includes a first holder, a first damper component and a first gel. The first damper component includes a first protrusion part and a first bar part. The first protrusion part includes a first surface. The first bar part includes a first free end and a first fixed end. The first protrusion part is fixed on the first free end, the first fixed end is fixed on the first holder and the first surface protrudes outward from the first free end. The first free end and the first protrusion part are inserted into the first gel, and the first gel moves along the radial direction of the first bar part relative to the first bar part.

A modularized anti-seismic system capable of enhancing the anti-seismic capacity of a cultural relic cabinet comprises a supporting connecting assembly (1), a sealing type viscous damper assembly (2), a splicable threaded galvanized pipe assembly (3) and a cultural relic cabinet body connecting assembly (4). The cultural relic cabinet group is combined into a modular structure through the cultural relic cabinet body connecting assembly (4), the modular structure is connected with a wall body or a frame column through the supporting connecting assembly (1), and an integrated modular structure of the cultural relic cabinet group and the wall body or the frame column is formed. A sealing type viscous damper assembly (2) is additionally arranged between the supporting and connecting assembly (1) and the cultural relic cabinet group. The cultural relic cabinets can be connected into a cultural relic cabinet group, an integrated modular structure of the cultural relic cabinet group and the wall body or the frame column is formed, and the better protection effect on the storage type cultural relics is achieved.

The present application relates to the technical field of damper, specifically to a pipeline viscous hydraulic damper, comprising a first cylinder component group and a second cylinder component group which are coaxial and separable and are sleeved outside the damper body. The present application sets the first cylinder component group and the second cylinder component group which are nested inside and outside and can be independently disassembled, constructs an integrated maintainable protection system, realizes multi-functional integration such as corrosion protection, active cleaning of core components during maintenance period and efficient heat dissipation during operation period without disassembling the damper body, and significantly improves long-term operation reliability and maintenance convenience in harsh marine environment.

The present invention relates to the field of damper technology, and specifically provides a tuned particle damper, comprising: a first mounting portion, a second mounting portion, a spiral mechanism, and a tuned particle rotating portion, wherein the first mounting portion is slidably connected to the second mounting portion; the spiral mechanism is disposed within the second mounting portion and is used to convert linear sliding between the first mounting portion and the second mounting portion into rotational motion and output it; the tuned particle rotating portion is rotatably mounted within the first mounting portion, and the output end of the spiral mechanism is connected to the tuned particle rotating portion to provide rotational force to the tuned particle rotating portion. The present invention effectively solves the problem of the prior art that tuned mass dampers require a large mass ratio, achieving the goal of achieving a good shock absorption effect using a tuned mass damper with a smaller mass ratio.

The utility model belongs to the technical field of dampers, and particularly relates to a supporting seat for a viscous damper, which comprises a supporting seat main body and a lifting component arranged on the outer surface of the supporting seat main body, the lifting assembly comprises two rotating discs rotationally connected into the supporting seat body and a triangular frame installed on the outer surfaces of the rotating discs, one end of the viscous damper is installed on the supporting seat body, the viscous damper is clamped in a bracket on the triangular frame, the viscous damper is lifted firstly according to the installation angle of the viscous damper, and then the viscous damper is lifted up. When one end of the supporting seat is installed, the rotating disc is rotated through the triangular frame, so that the rotating disc can rotate in the supporting seat body, after the rotating disc rotates to a proper angle, a screw rod on the supporting seat body is rotated, the screw rod can push a push plate of a U-shaped mechanism, the push plate can drive a limiting strip of an arc-shaped structure to be clamped on the rotating disc, and the viscous damper is limited through a bracket; the pressing rod is simple in structure, does not need to be lifted by workers, is more convenient to use and higher in efficiency, meanwhile, reduces danger, and needs to be taken down after installation is completed.

The invention relates to a self-resetting two-way colloid damper and an assembling method thereof, and belongs to the technical field of vibration control, the self-resetting two-way colloid damper comprises a piston connecting rod, a guide cylinder, an upper pressing plate, a cylinder body, a piston rod, an upper piston, a lower piston, a lower pressing plate, a piston rod limiting nut, a tail cylinder, a compression spring and working liquid with a porous lyophobic matrix, and the cylinder body is filled with the working liquid. The guide cylinder and the tail cylinder are respectively arranged at two ends of the cylinder body to form a cylinder body of the damper; an upper pressing plate is arranged on the side, close to the guide cylinder, in the cylinder of the damper, and a lower pressing plate is arranged on the side, close to the tail cylinder, in the cylinder of the damper. An upper piston and a lower piston are oppositely arranged on the inner side of the upper pressing plate and the inner side of the lower pressing plate correspondingly. A working liquid with a porous lyophobic matrix is filled between the upper piston and the lower piston; and the compression spring is sleeved on the piston rod between the upper piston and the lower piston. According to the invention, the problem of vibration control under normal use of constructional engineering and other dynamic systems can be solved, and the design of constructional engineering based on functionality and safety is realized.

The utility model provides a buffer which comprises a cylinder body, a piston, a supporting fixing piece and an elastic sleeve. The piston divides the liquid cavity into a pressure cavity and a non-pressure cavity; the elastic sleeve is arranged in the non-pressure cavity; the elastic sleeve is cylindrical, and an annular air chamber is defined between the outer side face of the elastic sleeve and the inner side wall of the cylinder body. The annular air chamber is communicated with the outside of the cylinder body through an air path; the supporting and fixing part is arranged in the annular air chamber, a liquid storage cavity is formed in the center of the elastic sleeve, when the piston reciprocates in the liquid cavity, the viscous liquid enters and exits the liquid storage cavity, and the elastic sleeve bulges or shrinks along with the liquid storage cavity, so that the volume of the liquid storage cavity is adjusted. The supporting and fixing piece is arranged in the annular air chamber, when the elastic sleeve is compressed, the elastic sleeve is effectively supported and fixed through the supporting and fixing piece, the structure is more reliable, the working efficiency is higher, and the service life of the whole buffer is greatly prolonged.

The utility model provides a novel viscous damper which comprises a viscous damper body, a piston rod is arranged at the end of the viscous damper body, a telescopic length adjusting assembly is arranged on the outer wall of the end of the viscous damper body, and the telescopic length adjusting assembly comprises a bobbin fixed to the outer wall of the end of the viscous damper body. And an insertion hole is formed in the bobbin, a telescopic rod is inserted into the insertion hole, and a limiting block is fixed to the end, penetrating through the interior of the insertion hole, of the telescopic rod. According to the viscous damper, by arranging the telescopic length adjusting assembly, in the using process of the damper, a transmission shaft and a gear can be driven to rotate through a hand wheel, a telescopic rod can be driven to do telescopic movement in an insertion hole of a bobbin under meshing transmission of the gear and a tooth groove, and therefore adjustment of the overall length of the viscous damper is achieved; and after the viscous damper is adjusted to a proper position, a locking nut is screwed on an external thread of the transmission shaft, so that braking of gear rotation is realized, and positioning and fixing after the overall length of the viscous damper is adjusted are realized.

The utility model discloses a high-damping-ratio steel spring viscous vibration isolator, which is characterized in that a piston plate is added on the basis of a conventional damping fluid vibration isolator, a damping hole is arranged on the piston plate, and a gap is reserved between the piston plate and the inner wall of a lower cylinder. Damping liquid flows from the lower oil chamber to the upper oil chamber from the damping hole of the piston plate and the gap between the piston plate and the lower cylinder, when the vibration isolator vibrates, the damping liquid circularly flows in the two oil chambers, and the hole-gap mixed type damping hole vibration isolator is formed, that is, the piston plate greatly increases the flowing degree of the damping liquid; the energy dissipation capacity of the damping liquid is greatly improved, the damping ratio is correspondingly increased, and resonance is effectively avoided so that the vertical dynamic deformation of the floating slab can be reduced.

The utility model discloses a tuned liquid damper and vortex reduction vibration attenuation subassembly, relates to wind turbine generator vibration attenuation technical field, including fixed frame and damper water tank, fixed frame, damper platform, damper water tank fixed connection, fixed frame side is provided with fixed piece, fixed piece and fixed frame pass through fastener connection, fixed frame top is provided with pressing piece, fixed frame top is provided with the damper water tank. The pressing piece is connected with the fixing frame through a fastening piece; the damper water tank is arranged in the fixing frame, and damping liquid is contained in the damper water tank; the fixing piece can move in the horizontal direction, and therefore the damper water tank is clamped from the side face of the damper water tank. The pressing piece can move in the vertical direction so as to clamp the damper water tank from the top of the damper water tank. According to the tuned liquid damper and the vortex reduction and vibration attenuation assembly, the tuned liquid damper is fixedly connected with the inner wall of the tower drum and the damper platform, safety and stability are achieved, the set damping effect is achieved, and meanwhile disassembly, assembly and maintenance are convenient and fast.

The utility model relates to the technical field of damping instruments, and discloses a self-cooling viscous damper which comprises a damping shell, one end of the outer portion of the damping shell is fixedly connected with a supporting end, the other end of the damping shell is fixedly connected with a sliding end, and a sliding rod is slidably connected into the sliding end. One end of the sliding rod is fixedly connected with the damping shell, the other end of the sliding rod is fixedly connected with a connecting end, a partition mechanism is arranged outside the connecting end, a cooling mechanism is arranged outside the damping shell and comprises a protective shell, the interior of the protective shell is fixedly connected to the exterior of the damping shell, and a plurality of air holes are formed in the exterior of the protective shell. According to the cooling device, the circulating pipe is connected with the cooling fins, the cooling liquid is driven to flow to the cooling fins through the circulating pipe, the effect of rapidly dissipating heat in the cooling liquid is achieved through rotation of the fan, the cooling efficiency is improved, and the cooling effect on the damper is guaranteed.

The invention discloses a horizontal pipeline single-base pipe clamp and method for preventing heat from being conducted to a viscous damper. The horizontal pipeline single-base pipe clamp comprises a pipe clamp body, a support, a connecting plate and a bottom plate. The top of the support is connected with the pipe clamp, the bottom of the support is connected to the bottom plate through a connecting plate, and a plurality of connecting holes are formed in the bottom plate. The using method comprises the steps that the pipe clamp body of the horizontal pipeline single-base pipe clamp is hooped to the corresponding horizontal pipeline and fastened, the bottom plate of the horizontal pipeline single-base pipe clamp is connected with the corresponding viscous damper through the connecting holes, and heat insulation between the horizontal pipeline and the viscous damper is achieved. When the viscous damper works, redundant substances are generated to influence the normal working conditions of the damper, and therefore the technical defect that heat conduction of an existing pipeline is transmitted to the viscous damper through a pipe clamp, and consequently a damping agent in a viscous damper body is softened and fails is overcome.

The utility model discloses a viscous damper with a friction energy dissipation function, which belongs to the field of shock absorption of building and bridge structures and comprises an oil cylinder, one end of the oil cylinder is in threaded connection with a base, the other end of the oil cylinder is in threaded connection with a connecting pipe, and a piston rod is arranged on one face, facing the oil cylinder, of the base. A first piston is arranged on the piston rod outside the oil cylinder; a second piston is arranged at one end of the piston rod inside the connecting pipe; according to the viscous damper with the friction energy dissipation function, a novel friction material-ceramic fiber material is adopted, the material is resistant to high temperature and low temperature, stable in physical and chemical performance and high in durability, the friction coefficient is not reduced under reciprocating friction, a novel sealing material-polytetrafluoroethylene is adopted, the material is resistant to high temperature and low temperature, stable in physical and chemical performance, high in durability and low in friction coefficient, and the sealing performance is good. Under reciprocating friction of the piston rod, the sealing performance is not reduced, and the service life of the product is long and can be the same as that of a building structure.

Viscoelastic damper assembly applicable both in air and submerged applications and with improved efficiency over prior art solutions for adding damping to an object or structure.

The utility model relates to a viscous damper with adjustable rigidity, which is characterized in that a first spiral spring is connected between a first adjusting nut and a first sealing device in series, the first spiral spring is in surface contact with the first adjusting nut, and the first spiral spring is in surface contact with the first sealing device; the first adjusting nut can adjust the compression length of the first spiral spring through threads of the piston rod, the change of the compression length of the first spiral spring means the change of the initial rigidity of the spring, and certain rigidity can be provided for the whole building under small wind vibration and small earthquakes to resist the effect of external loads. According to the product, under large wind vibration and large earthquakes, the whole building deforms, and energy is dissipated through the damping effect of the viscous damper; the product can recover to the original performance after energy consumption, and the range of energy consumption starting force of the product is wider.

The utility model provides a viscous damper with an explosion-proof cavity, which relates to the field of viscous dampers and comprises a cylinder body, a piston is movably mounted on the inner wall of the cylinder body, damping holes are equidistantly formed in the circumference of the surface of the piston, a hose is fixedly mounted on the surface of the cylinder body, and a fixing frame is fixedly mounted on the surface of the cylinder body. A round rod is movably embedded in the inner wall of the fixing frame, a round block is fixedly installed at one end of the round rod, a spring is movably arranged on the surface of the round rod in a sleeving mode, an extrusion piece is fixedly installed at the other end of the round rod, and the other side of the extrusion piece is attached to the surface of the hose. When the damping cylinder is strongly impacted, a damping medium in the cylinder body enters the hose, so that the hose which is extruded and closed by the extrusion sheet is opened, damping value flows into the other cavity, the pressure is released, the risk of cavity explosion is reduced, the corrugated pipe is arranged on the surface of the guide rod in a sleeving manner, the extending part of the guide rod is protected, and the influence of the environment is reduced.

An actuator contributes to improving the bonding strength between a viscoelastic member and a plate-shaped portion by a simple process. The utility model relates to an actuator, which comprises a supporting body, a connecting piece, a connecting piece and a connecting piece, wherein the supporting body is provided with a plate-shaped part; a movable body having a first portion, a second portion, and a connecting portion, the first portion and the second portion facing the plate-shaped portion on both sides of the plate-shaped portion in the thickness direction, respectively, the connecting portion connecting the first portion and the second portion; a first viscoelastic member that is in contact with the plate-like portion and the first portion, respectively, at a position where the plate-like portion and the first portion face each other; and a second viscoelastic member that is in contact with the plate-shaped portion and the second portion, respectively, at positions where the plate-shaped portion and the second portion face each other, in which a plurality of recesses are provided in at least portions where the plate-shaped portion is in contact with the first viscoelastic member and the second viscoelastic member.