JP2004166387A - Vibration controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration controller which can damp vibrations transmitted through wiring. <P>SOLUTION: A first coupling member 101 and a second coupling member 102 are connected with eight wiring members 105 having prescribed elasticity to function as a vibration control material. The wiring member 105 is a conductive material having a property of returning to its original shape by repelling when it is bent. The vibrations to be transmitted between the first coupling member 101 and the second coupling member 102 are absorbed and controlled by the eight wiring members 105. Also, a conductive route from the first coupling member 101 to the second coupling member 102 can be secured by the wiring members 105. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vibration damping device that attenuates vibration transmitted to wiring and piping. The present invention also relates to a vibration damping device that can be used for supporting or fixing a structure.
[0002]
[Prior art]
10 to 12 show examples of a passive vibration damping joint according to the related art. FIG. 10 shows a vibration damping joint having a structure in which a disc 202 and a disc 203 are bonded to both ends of a damping material 201 such as silicone rubber. A male screw 204 is fixed to the disk 202, and a male screw 205 is fixed to the disk 203. The fixing of the structures is performed by connecting the structures to the male screws 204 and 205, respectively. The vibration damping joint of FIG. 10 has a structure in which a vibration damping material is used as a direct coupling member.
[0003]
FIG. 11 shows a structure in which the structure 210 and the structure 211 are connected to each other, and is a vibration damping joint having a structure in which vibration damping materials 214, 215, and 216 are fastened by being sandwiched between bolts 212 and nuts 213.
[0004]
FIG. 12 shows a vibration damping joint having a structure in which piston-type coupling members 221 and 222 are held by an O-ring or spherical vibration-damping material 226 in a two-part cylinder-shaped casing consisting of 223 and 224. is there. In the vibration damping joint of FIG. 12, the structures are connected to each other by fixing the structures to be connected to the coupling members 221 and 222, respectively.
[0005]
FIG. 13 is a diagram illustrating a structure for fixing a device to a floor or the like in the related art. FIG. 13 shows a state in which a device (for example, a measuring device or the like) 231 which is not desirable to receive vibration is fixed to the floor 233 via a suitable vibration damping material (for example, rubber) 232. In this case, the vibration transmitted to the device 231 via the floor 233 is damped by the vibration damping material 233, and the inconvenience that the normal operation of the device 231 is prevented by the vibration transmitted from the floor 233 is prevented. Note that a similar structure is used when a device that generates vibration is used as the device 231. In this case, the vibration transmitted from the device 231 to the floor 233 is damped by the vibration damping material 232, thereby reducing the vibration transmitted to the floor 233 or cutting off the vibration transmitted to the floor 233.
[0006]
[Problems to be solved by the invention]
The above-described vibration damping joint is used in a portion for fixing the device to the housing, and has a role of blocking or reducing vibration transmitted from the housing to the device or transmitted from the device to the housing.
[0007]
As a vibration propagation path, a wiring for transmitting electric power, a control signal, and the like can be given. Today, many devices are related to electronic control, and are connected to control signal input / output wiring and power supply wiring. The propagation of vibration through the wiring also causes a failure of the device and a reduction in the reliability of the system. The vibration damping joint illustrated in FIGS. 10 to 12 cannot be used for the purpose of preventing the propagation of vibration through such wiring. In addition, the same problem of vibration propagation as in the case of wiring can be pointed out in piping for transmitting fuel, cooling water, or hydraulic pressure.
[0008]
Further, the vibration damping joint shown in FIGS. 10 to 12 has items to be improved as described below. In the structure of FIG. 10, the temperature characteristics of the vibration damping material 201 directly affect the rigidity of the joint, and therefore, the vibration characteristics of the portion connected by the vibration damping joint become unstable depending on the temperature of the environment. This is because the elastic modulus of a rubbery material such as silicone rubber used as a vibration damping material changes greatly with temperature.
[0009]
Further, in the structure of FIG. 11, the rigidity characteristics are apt to change depending on the fastening state of the fastener, and the vibration damping performance tends to vary depending on the manner of mounting work. Therefore, there is concern about obtaining stable performance. Also, in the structure of FIG. 11, similarly to the structure of FIG. 10, the temperature characteristic of the vibration damping material directly affects the rigidity of the joint, and the vibration characteristic of the portion connected by the vibration damping joint is unstable due to the environmental temperature. Can be pointed out.
[0010]
12, it can be pointed out that the vibration-damping effect of the vibration-damping material 226 changes depending on the temperature, whereby the vibration characteristics of the portions connected by the vibration-damping joint shown in FIG. 12 become unstable.
[0011]
The phenomenon that the vibration damping characteristics change depending on the temperature is particularly evident in an environment where temperature changes rapidly, such as in a combustion engine or aerospace field.
[0012]
Further, the vibration damping joints shown in FIGS. 10 and 11 exhibit a vibration damping effect against vibrations to which compression is repeatedly applied, but have a relatively small vibration damping effect against repeated torsion. The vibration damping joint shown in FIG. 12 exerts a vibration damping effect only on the displacement in the axial direction indicated by the arrow 227. That is, the vibration damping joint shown in FIGS. 10 to 12 cannot sufficiently exert the vibration damping action depending on the direction of vibration.
[0013]
On the other hand, there are other technical issues described below. As shown in FIG. 13, when the device 231 is fixed to the floor 233 or the like via the vibration damping material 232, when the device 231 is a precision device that does not like vibration, the strength and state of the vibration applied to the device 231 are predicted in advance. The necessary vibration suppression design is performed. That is, it is necessary to determine the material and structure of the vibration damping material 232 in order to reduce the vibration transmitted to an allowable level.
[0014]
On the other hand, a wiring 234 and the like are generally connected to the device 231. The wiring 234 is connected to, for example, another device. When the wiring 234 and the like are connected to the device 231, vibration transmitted through the wiring 234 also exists, so that the above-described design conditions of the vibration damping material 232 are different from those assumed, and the vibration damping material 232 is controlled as expected. The problem that the vibration effect cannot be exhibited occurs. As a result, unexpected complicated vibrations are transmitted to the device 231, causing problems such as a decrease in reliability, malfunction, or malfunction.
[0015]
In order to solve this problem, the vibration damping material 232 may be designed in consideration of the vibration transmitted through the wiring 234 and the like. However, the vibration analysis including the vibration transmitted to the wiring 234 is not preferable because the analysis becomes complicated and the design cost increases. Also, it is not easy to deal with it. This problem can be pointed out similarly when a pipe for supplying fuel, cooling water, or the like is arranged in addition to the wiring. This problem can also be pointed out when the device 231 generates vibration and the vibration is transmitted to other devices.
[0016]
An object of the present invention is to provide a vibration damping device that attenuates vibration transmitted through wiring and piping. Another object of the present invention is to provide a vibration damping device for attenuating vibration transmitted through wiring and piping, wherein the temperature dependency of the vibration damping characteristics is small. Another object of the present invention is to provide a vibration damping device for attenuating vibration transmitted through wiring and piping, in which the vibration damping performance is not limited in the direction of vibration displacement. Another object of the present invention is to solve the problem that in a state where the first structure is fixed to the second structure, complicated vibration is transmitted from one structure to the other by vibration transmitted through wiring and piping. It is to provide a vibration damping device to be solved.
[0017]
[Means for Solving the Problems]
Hereinafter, the present invention and others will be described. A first invention provides a single or a plurality of wiring members having predetermined elasticity, a first connecting member connected to one end of the wiring member, and a second connecting member connected to the other end of the wiring member. And a first wiring connecting means provided on the first connecting member, and a second wiring connecting means provided on the second connecting member.
[0018]
The predetermined elasticity refers to a physical property that can be bent and rebounds and returns to its original state when the force applied after the bending is removed. The wiring member having the predetermined elasticity includes a wiring material having the property itself and a wiring material which does not have the property but is given the property by being combined with another member.
[0019]
Examples of the wiring member having a predetermined elasticity include steel, phosphor bronze, and an elastic alloy. Further, as the wiring member having a predetermined elasticity, a wiring member having a structure in which an elastic member is arranged along a wiring member such as a copper wire or a coaxial cable, and physical properties as a longitudinal elastic member are imparted to the wiring member. No. Examples of such a wiring member include a structure in which wiring is inserted into a pipe having elasticity, for example, a pipe made of glass fiber or a pipe made of carbon fiber. The wiring includes a single-wire cable, a multi-core cable, a coaxial cable, an optical fiber, and other wires for transmitting electric power and electric signals.
[0020]
The first and second coupling members are connected to one end and the other end of the wiring member, respectively. Examples of the connection method include a method using an appropriate connector structure, a method using a screw structure, a method using fitting, a method using pressure bonding, a method using an adhesive, and a method using brazing (typically, soldering). The securing of the conductivity and the securing of the bonding strength may be performed simultaneously or separately.
[0021]
The first wiring connection means and the second wiring connection means are wiring connection means for connecting the vibration damping device from outside. In other words, the vibration damping device of the present invention is inserted into a part of the wiring for which the propagation of vibration is to be reduced, and the connecting means for the wiring to be damped is the first wiring connecting means and the second wiring connecting means. Connection means. Examples of the wiring connection means include a method using an appropriate connector structure, a method using a screw structure, a method using fitting, a method using pressure bonding, a method using an adhesive, and a method using brazing (typically, soldering). Further, the first wiring connection means and the second wiring connection means respectively connect the first structure and the vibration damping device when the structures using the vibration damping device of the first invention are connected to each other. , And the connecting means between the second structure and the vibration damping device. It should be noted that the first wiring connection means and the second wiring connection means may not be used as the connection means for the structure, and other connection means may be prepared. Here, the term “structure” is a general term for a device housing, a part of members constituting the device, a floor or a wall, and other members having a predetermined structure. For example, when a measuring device is arranged inside a certain device, the housings that constitute the former device and the latter device are both structural bodies.
[0022]
According to the first aspect, the vibration transmitted between the first coupling member and the second coupling member is absorbed or reduced by the elasticity of the wiring member. Thereby, the vibration transmitted through the wiring can be suppressed. In addition, by using the vibration damping device utilizing the first invention, the structures are connected to each other, or the other structure is fixed to one structure, and power supply and communication are secured between the two structures. it can. In this structure, the parts that physically connect the structures and the wiring and piping are composed of the same member, so there is no vibration separately transmitted through the wiring and piping, and unexpected or unpredictable complexities between the structures. It can prevent the situation where a strong vibration is transmitted. This facilitates the vibration design of the system (structure or other design taking vibration into account).
[0023]
In a second aspect based on the first aspect, the wiring member is a coaxial cable, and the first coupling member or the second coupling member is made of a conductive material, and is connected to a shield wire of the coaxial cable. It is characterized by. According to the second aspect, a shield structure using one or both coupling members as a shield is realized. The second invention is suitable for handling a high-frequency signal.
[0024]
According to a third aspect, in the first or second aspect, a bending stress acts on the wiring member. The bending stress refers to a stress (internal force) generated inside the wiring member when a force is applied to the wiring member and the wiring member is bent (curved). According to the third aspect, the repulsive force of the wiring member to return to the original shape is maintained, so that a vibration damping device having a tight structure can be obtained. The third invention is particularly useful when the device is fixed using the vibration damping device of the present invention. In this case, since the repulsive force of the wiring member always acts, the rigidity or strength of the vibration damping device is ensured, and thereby a property preferable as a member for supporting the weight of the device is obtained.
[0025]
A fourth invention is characterized in that, in any one of the first to third inventions, the plurality of wiring members include a plurality of wiring members having different bending directions.
[0026]
Curved refers to a curved shape that is not straight. Normally, when a force is applied to both ends of the wiring member to bend, the shape of the wiring member follows a curve approximated by a part of a circle or an ellipse. There are two types of curved wiring members, one using a shape that maintains a curved state and the other using a state in which it is forcibly deformed and has a repulsive force.
[0027]
The direction of the curve is defined as a direction from the center of curvature of the curved shape approximated by a part of a circle or ellipse (the center of the approximate circle or ellipse) to the center of the wiring member. If the curve is not a simple shape approximated by a part of a circle or an ellipse, a single wiring member has a plurality of curved directions.
[0028]
According to the fourth aspect, since the directions of curvature of the plurality of wiring members are different, a vibration damping effect can be obtained in various directions of vibration transmitted between the first coupling member and the second coupling member. Can be In other words, since the directions of curvature of the plurality of wiring members are not the same, it is suitable for vibration suppression for displacements in various directions generated between the first coupling member and the second coupling member when subjected to vibration. There is a wiring member which receives the displaced displacement, whereby an effective vibration damping effect can be obtained in various vibration directions.
[0029]
According to a fifth aspect, in any one of the first to fourth aspects, the whole has a spherical shape (or a shape that can be approximately approximated to a spherical shape), and the first coupling member is connected to one of the spherical poles. The second coupling member is located at the other pole of the spherical shape, and a plurality of wiring members are located along the spherical shape. The shape may not be a perfect sphere but may be a shape obtained by deforming a sphere.
[0030]
According to the fifth aspect, the vibration transmitted between the first coupling member and the second coupling member can be effectively dispersed to the plurality of wiring members. Further, since the direction of curvature can be made different in each of the plurality of wiring members, a vibration damping effect against various vibrations can be obtained.
[0031]
According to a sixth aspect, in any one of the first to fourth aspects, the wiring member has a bent shape or a spiral shape. The bent shape refers to a bent shape. The number of times of bending is not limited to one. Helical shapes include those in which the diameter of the spiral is not constant. According to the sixth aspect, since the wiring member has a bent shape or a spiral shape, an effect of reducing or absorbing a force applied to the wiring member due to vibration can be obtained.
[0032]
In the above invention, the wiring has a vibration damping effect. As another invention, there is a configuration in which the first coupling member and the second coupling member are connected by a longitudinal elastic member that is responsible for vibration suppression separately from the wiring. The same configuration as the wiring member having the above-described predetermined elasticity can be applied to the longitudinal elastic member. When a longitudinal elastic member is used, appropriate wiring is arranged between the first coupling member and the second coupling member, and an electrical contact path is secured.
[0033]
Here, the longitudinal elastic member refers to a member which has a long and thin elongated shape, is capable of being bent, and has a resilience which rebounds and returns to its original state when a force applied after bending is removed. As the material of the longitudinal elastic member, a conductive material or a non-conductive material having the above-described mechanical properties can be used. Examples of such a material include steel, phosphor bronze, an elastic alloy, a member using carbon fiber (carbon fiber), a member using glass fiber (glass fiber), and the like.
[0034]
In each of the above-mentioned inventions, piping for transporting a fluid may be employed instead of the wiring. In this case, the wiring connection means becomes the pipe connection means. That is, each of the above-described inventions can be applied to a pipe for transporting a fluid, instead of the wiring for transmitting an electric signal or current. In this case, the effect of suppressing the vibration transmitted through the pipe can be obtained as in the case of the wiring. The type of the fluid is not limited as long as it flows through the pipe, such as a gas, a liquid, and a powder. Further, a case where the transport distance of the fluid is short, such as a pipe for transmitting hydraulic pressure, may be used.
[0035]
Another invention is a first coupling member, a second coupling member, a fluid connected between the first coupling member and the second coupling member, and a fluid between the first coupling member and the second coupling member. A single or a plurality of elastic piping members for transporting and absorbing vibration.
[0036]
In the above invention, it is necessary that the pipe has such a rigidity that the shape of the entire vibration damping device is maintained. The elasticity needs to be elastic enough to suppress vibration. It is preferable that the elasticity is such that a repulsive force is generated when bent. According to the above invention, the vibration transmitted between the first coupling member and the second coupling member is damped by the pipe member, and the fluid is transported. The vibration transmitted through the pipe can be damped by inserting and arranging the vibration damping device of the present invention in a part of the pipe through which the fluid is transported. Also in the present invention, it is preferable to arrange a plurality of pipes having different directions of curvature so as to be able to cope with various vibration directions. Alternatively, a pipe having a predetermined elasticity may be forcibly bent and used in a state in which bending stress is acting (in a state having a repulsive force). Furthermore, the whole may be configured in a spherical shape, the first coupling member may be arranged on one pole, the second coupling member may be located on the other pole, and a plurality of piping members may be located along the spherical shape. . Further, the pipe member may have a bent shape or a spiral shape. Further, wiring for conducting signals and power may be employed instead of the piping.
[0037]
Still another aspect of the present invention provides a single or plural longitudinal elastic members, a first coupling member connected to one end of the longitudinal elastic member, and a second coupling member connected to the other end of the longitudinal elastic member. And a pipe having one end connected to the first coupling member and the other end connected to the second coupling member; first piping connection means provided on the first coupling member; And a second pipe connection means provided. According to the present invention, it is sufficient that the longitudinal elastic member is responsible for maintaining the shape of the vibration damping device as a whole and for damping the vibration, and that the piping be capable of transporting fluid.
[0038]
In the above invention, it is preferable that a plurality of curved longitudinal elastic members are arranged, and the directions of the curvatures are different from each other. By doing so, it is possible to perform vibration suppression corresponding to various vibration directions. Further, a bending stress may be applied to the longitudinal elastic member. Further, the whole is configured in a spherical shape, the first coupling member is arranged at one pole, the second coupling member is located at the other pole, and a plurality of longitudinal elastic members are located along the spherical shape. Is also good. Further, the longitudinal elastic member may have a bent shape or a spiral shape.
[0039]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention can be implemented in many different modes and should not be construed as being limited to the description of the embodiments. The same elements are given the same numbers throughout.
[0040]
FIG. 1 is a diagram showing an example of a vibration damping device using the present invention. FIG. 1 shows a vibration damping joint 100. The vibration damping joint 100 includes a first coupling member 101, a second coupling member 102, a receptacle 103, a receptacle 104, a wiring member 105 made of a metal rod and having a predetermined elasticity, a connection terminal 106, a connection terminal 108, a screw 107, and a screw. 109 is included.
[0041]
The vibration damping joint illustrated in FIG. 1 has a spherical shape as a whole, the first coupling member 101 is located at one spherical pole, the second coupling member 102 is located at the other spherical pole, Eight wiring members 105 are located along the spherical surface.
[0042]
The first coupling member 101 and the second coupling member 102 have the same structure, and have a disk shape in which one edge is processed into a tapered shape. The first connecting member 101 and the second connecting member 102 are connected to each other by eight wiring members 105. More specifically, the wiring member 105 has a connection terminal 106 attached to one end and a connection terminal 108 attached to the other end. The connection terminal 106 is fixed to the first coupling member 101 by a screw 107, and the connection terminal 108 is fixed to the second coupling member 102 by a screw 109. Thus, the first connecting member 101 and the second connecting member 102 are connected via the eight wiring members 105. Further, with this structure, an electric conduction path between the first coupling member 101 and the second coupling member 102 is secured.
[0043]
The first coupling member 101 has a receptacle 103 disposed thereon, and the second coupling member 102 has a receptacle 104 disposed therein. The plug 110 is joined to the receptacle 103. A plug 112 is joined to the receptacle 104. Wiring 111 is connected to plug 110, and wiring 113 is connected to plug 112. Threads are formed on the outer periphery of the receptacles 103 and 104. Each of the plugs 110 and 112 has a cylindrical shape and a thread corresponding to the thread of the receptacle formed on the inner surface. The plug 110 is screwed into the receptacle 103 and the two are joined. Further, the plug 112 is screwed into the receptacle 104 so that the two are connected. The wirings 111 and 113 are wirings made of, for example, copper.
[0044]
Hereinafter, an example of a material forming the vibration damping joint 100 illustrated in FIG. 1 will be described. The first coupling member 101 and the second coupling member 102 are made of a conductive material. For example, it is composed of stainless steel, copper, iron, aluminum, various alloys and the like. The coupling member is preferably made of a rigid material. The materials of the receptacles 103 and 104, the connection terminals 106 and 108, and the screws 107 and 109 are the same as those of the coupling member. The wiring member 105 is made of a conductive material having a property of repelling when bent and returning to its original state. For example, round bars of stainless steel, steel, and phosphor bronze are used.
[0045]
The wiring member 105 has two usage forms. One is a mode in which a wiring member 105 curved into the shape shown in FIG. 1 is prepared and used. In this case, when no force is applied, the wiring member 105 has the curved shape shown in FIG. Another form of use is to prepare a non-curved shape as shown in the figure (for example, a linear shape or another curved shape), forcibly bend it into the shape shown in the drawing, and bend stress acts. This is a method of using with a repulsive force. In either case, when a force is applied between both ends of the wiring member to change the shape of the wiring member, a repulsive force is generated against the change. In the latter method of using the repulsive force, the structure of the vibration damping joint can be made tight without any looseness.
[0046]
Next, the function of the vibration damping joint will be described. The vibration damping joint 100 illustrated in FIG. 1 absorbs or reduces a force applied between the first coupling member 101 and the second coupling member 102 by the plurality of wiring members 105. When a force is applied between the first coupling member 101 and the second coupling member 102, the force deforms the wiring member 105. By this deformation, the vibration transmitted from the first coupling member 101 to the second coupling member 102 or the vibration transmitted from the second coupling member 102 to the first coupling member 101 is absorbed, and the vibration is suppressed. Thus, vibration transmitted from the wirings 111 to 113 or vibration transmitted from the wiring 113 to the wiring 111 is cut off or weakened.
[0047]
The above-described vibration damping effect is not limited to the direction of the amplitude of the vibration applied between the first coupling member 101 and the second coupling member 102. That is, the vibration damping effect can be obtained regardless of the direction of the amplitude of the vibration applied between the first coupling member 101 and the second coupling member 102. This is effective for any relative displacement occurring between the first coupling member 101 and the second coupling member 102 since each of the eight wiring members has a different direction of curvature. This is because the displacement of the wiring member exhibiting a great vibration damping effect occurs.
[0048]
Next, an example of use of the vibration damping joint illustrated in FIG. 1 will be described. FIG. 2 is a diagram illustrating an example of use of the vibration damping joint. FIG. 2 shows an example in which the vibration damping joint 100 is arranged between the wiring 121 and the wiring 122. In the example of FIG. 2, the wiring 121 and the wiring 122 are connected via the vibration damping joint 100. In the example of FIG. 2, vibration transmitted from the wiring 121 to the wiring 122 or vibration transmitted from the wiring 122 to the wiring 121 is cut off or attenuated by the vibration damping joint 100.
[0049]
Since the vibration damping joint illustrated in FIG. 1 does not use a rubber material or the like whose mechanical properties such as elastic modulus have a large temperature dependence, the temperature dependence of the vibration characteristics of the coupled structures can be reduced. Further, a vibration damping action can be obtained irrespective of the direction of displacement following the vibration.
[0050]
In the example shown in FIG. 1, the wiring member 105 is fixed in a state of being curved outward. However, the curved state of the wiring member 105 is not limited to the state of FIG. However, it is not preferable to make the shape linear. This is because the displacement of the wiring member 105 is not stably caused depending on how the force is applied.
[0051]
Next, another example of the present invention will be described. FIG. 3 is a diagram showing another example of the present invention. FIG. 4 is an enlarged view of a part of the structure shown in FIG. FIG. 3 illustrates an example in which a commercially available coaxial cable is used as the wiring member. In this example, a predetermined elasticity is given to the coaxial cable by winding an elastic member around the coaxial cable, and a wiring member having a predetermined elasticity is obtained.
[0052]
In the example of FIG. 3, the first coupling member 131 and the second coupling member 132 are connected by a coaxial cable 135. The coaxial cable 135 has a structure having a repulsive force against bending. The coaxial cable 135 is connected to the first coupling member 131 and the second coupling member 132 by connectors. Plugs 136 and 137 constituting a connector are attached to both ends of the coaxial cable 135.
[0053]
A band-shaped metal plate 144 is spirally wound around the coaxial cable 135. The strip-shaped metal plate 144 is made of stainless steel, steel, phosphor bronze, an appropriate alloy, or the like, and has a property of repelling against a change in shape and returning to its original state in a spiral state.
[0054]
Normally, a commercially available coaxial cable 135 does not have a predetermined elasticity, but by winding a band-shaped metal plate 144, physical properties as a longitudinal elastic member are imparted.
[0055]
FIG. 4 shows a detailed example of the structure of the connector. Here, a part of the first coupling member 131 will be described as an example. On the first coupling member 131, the receptacles 140 and 142 are arranged. The receptacles 140 and 142 are connected by a coaxial cable 141 (in the case of FIG. 4A) or a single wire 143 (in the case of FIG. 4B). The coaxial cable 141 is a normal coaxial cable. A plug 136 is coupled to the receptacle 140. The plug 136 is attached to one end of the coaxial cable 135. A plug 139 is coupled to the receptacle 142. The plug 139 is attached to one end of the coaxial cable 138. The coaxial cable 138 is a cable for connecting wiring from the first coupling member 131 to an electronic device, a circuit board, or the like (not shown).
[0056]
The receptacle 140 has a structure in which a metal cylindrical member is filled with an appropriate insulating material, and a hole is formed at the center thereof for making an electrical connection with the core wire of the coaxial cable 135. A connection electrode is arranged on the inner surface of the hole. Further, a screw thread is formed on a side surface of the receptacle. The plug 136 that is the mating part of the receptacle 140 has a rotatable metal cylindrical member with a thread on the inner surface, and a rod-shaped electrode (not shown) inserted in the center hole of the above-mentioned receptacle at the center of the inside. . This rod-shaped electrode is in electrical contact with the core wire of the coaxial cable 135. The connection of the plug 136 to the receptacle 140 is made by engaging the thread inside the plug 136 with the thread outside the receptacle 140. The structure of the plug 139 and the receptacle 142 is the same as that of the plug 136 and the receptacle 140. Note that a coupling member formed of a set of a receptacle and a plug is referred to as a connector. The structure of the connector is not limited to the structure exemplified here, and various types can be used.
[0057]
In the example of FIG. 4B, the wiring in the coupling member 131 is only a single wire (or a stranded wire) 143 that connects the core of the coaxial cable 135 and the core of the coaxial cable 138, and the shield is a casing of the coupling member 131. I use my body. In this structure, the shields (outer conductors) of the coaxial cables 135 and 138 are electrically connected to the housing of the coupling member 131 to ensure conduction. In the example of FIG. 4B, since the casing of the coupling member 131 is used as a shield, when the frequency to be handled is high, the disturbance of the impedance is large. In that case, a constant impedance attenuator with an appropriate loss may be arranged inside or outside the coupling member 131 to suppress the generation of reflected waves due to impedance mismatch. The structure shown in FIG. 4B has an advantage that a structure capable of handling a high-frequency signal with a simple structure can be realized.
[0058]
In FIG. 3, a predetermined elasticity is given to the coaxial cable by arranging an elastic band-shaped member on the coaxial cable along a spiral winding. A similar effect may be obtained by fixing a band-shaped elastic member to a coaxial cable in close contact with a straight line. FIG. 5 is a diagram illustrating an example of a structure for providing elasticity to a coaxial cable. FIG. 5 shows an example in which a strip-shaped elastic member 153 extends along a coaxial cable 151 having plugs 152 attached to both ends. In this example, elasticity is given to the coaxial cable 151 by the elastic member 153. In the example of FIG. 5, the elastic members 153 are fixed to the coaxial cable 151 at a plurality of locations by the fasteners 154. Metal such as steel, resin material, glass fiber material, and carbon fiber material can be used for the elastic member 153. The elastic member 153 also needs to have a mechanical property that deforms when an external force is applied and generates a repulsive force to return to the original shape.
[0059]
There is still another method of using a coaxial cable as a wiring member having a predetermined elasticity. For example, there is a method in which a coaxial cable is inserted into a pipe having predetermined elasticity. Examples of such a pipe include a pipe made of a resin material having a material that generates a repulsive force when bent, a glass fiber pipe, and a carbon fiber pipe.
[0060]
Further, the type of the coaxial cable that can be used is not limited. Furthermore, although an example using a coaxial cable is shown here, the type of cable is not limited to this. For example, a single-core wiring cable, a parallel two-wire cable, or a multi-core cable can be used. Further, a bare wire without an insulating coating may be used.
[0061]
The vibration damping joint illustrated in FIG. 3 has the same operation and effect as the vibration damping joint illustrated in FIG. In addition, the vibration damping joint illustrated in FIG. 3 has an advantage that a commercially available coaxial cable or wiring can be used.
[0062]
As another aspect of the present invention, there is an example in which wiring connection between the first and second coupling members and physical connection using an elastic material are configured separately. Hereinafter, this example will be described. FIG. 6 is a diagram showing another example of the present invention. FIG. 6 shows an example in which the first coupling member 131 and the second coupling member 132 are connected by a longitudinal elastic member 602, and the wiring is connected by a coaxial cable 601. In the case of this example, the coaxial cable 601 does not need to have elasticity or strength, and may have a role of making an electrical connection. The longitudinal elastic member 602 only needs to have necessary elasticity, and may be a conductor or a non-conductor. FIG. 6 illustrates an example of a coaxial cable, but the type of wiring is not limited to the coaxial cable.
[0063]
As a structure of the vibration damping device, there is also a structure as exemplified in FIG. FIG. 7 is a diagram showing another example of the present invention. FIG. 7A illustrates a structure in which a first coupling member 701 and a second coupling member 702 are connected by a wiring member 703 bent and bent at a predetermined angle. There are eight wiring members 703, which have physical properties as a longitudinal elastic member. The wiring member 703 can be replaced with a longitudinal elastic member that does not function as a wiring. In this case, the wiring is prepared separately. The structures of the wiring member and the coupling member can be the same as those in the above-described embodiment. In the structure illustrated in FIG. 7A, a bellows structure is formed by the wiring member 703.
[0064]
FIG. 7B illustrates a structure in which a first connection member 704 and a second connection member 705 are connected by a spiral wiring member 706. There are two wiring members 706, which have physical properties as a longitudinal elastic member. The wiring member 706 can be replaced with a longitudinal elastic member that does not function as a wiring. In this case, the wiring is prepared separately. Note that the same structure as in the above-described embodiment can be adopted for the wiring member and the coupling member.
[0065]
As another embodiment utilizing the present invention, there is an example in which piping is used instead of wiring. Hereinafter, an example in which the present invention is applied to a pipe through which a fluid flows will be described. For example, in the structure illustrated in FIG. 3, an example is given in which the coaxial cable 135 is changed to a pipe. In this case, other coaxial cables are also changed to piping. Also, the connector part is changed to a pipe joint (connection part). When the coaxial cable 135 is changed to a pipe in the structure shown in FIG. 3, the physical properties of the longitudinal elastic member are given by the strip-shaped metal plate 144, so that a flexible resin material or the like can be used as the pipe material. Alternatively, the pipe itself may be formed of an elastic pipe-shaped member made of carbon fiber or glass fiber without using the band-shaped metal plate 144. In this case, the pipe itself functions as a longitudinal elastic member.
[0066]
Further, it is also possible to obtain a vibration damping device applied to piping using the structure shown in FIG. That is, in the structure illustrated in FIG. 6, the coaxial cable 601 and another coaxial cable may be changed to piping. In this case, the material of the pipe is a material having such flexibility that the function of the longitudinal elastic member 602 is not impaired.
[0067]
By applying the present invention to a pipe, propagation of vibration through the pipe can be prevented. For example, a pipe for supplying fuel and cooling water is connected to the combustion engine, and there are cases where it is desired to suppress vibration transmitted through the pipe. In such a case, the transmission of vibration through the pipe can be suppressed by interposing the above-described vibration damping structure in the middle of the pipe. Further, for example, by using the above configuration, it is possible to prevent vibration transmitted from an exhaust pump connected to a precision device such as an electron microscope requiring a reduced pressure state to the precision device via an exhaust pipe.
[0068]
FIG. 8 shows an example of a structure for suppressing vibration transmitted through a pipe. FIG. 8 shows an example in which the vibration damping devices 170 to 172 of the present invention are inserted and arranged in a part of the fuel pipe 167, the cooling water supply pipe 168, and the cooling water drain pipe 169 connected to the power generation equipment 161. . FIG. 8A is a general outline, and FIG. 8B is an enlarged view of a part of the vibration damping device 170.
[0069]
FIG. 8A shows a power generation facility 161, a diesel engine 162, a generator 163, a pedestal 164, a damping support member 165, a floor (or base) 166, a fuel pipe 167, a cooling water supply pipe 168, and a cooling water drain pipe. 169, a damping device 170, a damping device 171 and a damping device 172 are shown. FIG. 8B shows a first connecting member 173, a second connecting member 174, a first pipe connecting means 175, a second pipe connecting means 176, a pipe 177, a longitudinal elastic member 178, a pipe connecting portion 179, a pipe connection. Section 180 is shown.
[0070]
The generator 163 converts rotational energy generated by the diesel engine 162 into electric power. Diesel engine 162 and generator 163 are fixed on pedestal 164. The pedestal 164 is fixed on a floor (or base) 166 via a damping support member 165 made of damping rubber. A vibration damper 171 is inserted into a part of the fuel supply pipe 167. Similarly, a damping device 171 and a damping device 172 are inserted into a part of the cooling water supply pipe 168 and a part of the cooling water drain pipe 169, respectively.
[0071]
The first connection member 173 is connected to the fuel pipe 167 via a first pipe connection means 175, while the pipe 177 is connected via a pipe connection section 179. The first coupling member 173 is made of a suitable metal material. A space serving as a path through which a fluid flows is formed inside the first coupling member, and the first pipe connection means 175 and the pipe connection portion 179 are connected inside. As the first pipe connection means 175 and the pipe connection part 179, a commonly used pipe connection structure can be used. The second coupling member 174 has the same structure as the first coupling member 173. The second pipe connection means 176 has the same structure as the first pipe connection means 175, and the pipe connection section 180 has the same structure as the pipe connection section 179. Note that the damping device 171 and the damping device 172 have the same structure as the damping device 170 described above.
[0072]
The pipe 177 is a pipe having a degree of flexibility that does not impair the function of the longitudinal elastic member 178, and is made of a material that is not corroded by fuel flowing inside. As the pipe 177, for example, a flexible metal pipe can be used. The longitudinal elastic member 178 is an elastic rod-shaped member made of steel or carbon fiber. Note that a material having a certain degree of elasticity may be adopted for the pipe 177 so that the pipe 177 exerts a vibration damping action in cooperation with the longitudinal elastic member 178.
[0073]
The fuel flowing through the fuel pipe 167 flows from the second pipe connecting means 176 into the second connecting member 174, from the pipe connecting section 180 to the pipe connecting section 179 through the pipe 177, and further passes through the first connecting member 173. Out of the first pipe connection means 175. The first connecting member 173 and the second connecting member 174 are connected by a longitudinal elastic member 178, and a fluid flow between the two is secured by a pipe 177. The force applied between the first coupling member 173 and the second coupling member 174 is absorbed by the longitudinal elastic member 178, whereby a vibration damping effect is obtained.
[0074]
According to the configuration illustrated in FIG. 8, vibration generated in the diesel engine 162 can be prevented from being transmitted from the power generation facility to the outside via the fuel pipe 167, the cooling water supply pipe 168, and the cooling water drain pipe 169.
[0075]
Next, an example in which precision equipment is fixed to an appropriate housing using the vibration damping device of the present invention will be described. The following example can be applied to a case where a precision instrument that does not want to vibrate is installed in a boiler facility, a power generation facility, or a transport device (such as a ship or an aircraft). Examples of the precision instrument include instruments that are not preferably subjected to vibration, such as computer instruments, measuring instruments, communication instruments, and hard disk drives.
[0076]
FIG. 9 is a diagram showing another example using the vibration damping device of the present invention. FIG. 9 shows a precision instrument 191, a vibration suppression device 192, a structure 193, a signal wiring 194, and a power supply wiring 195. The precision instrument 191 is fixed to a structure 193 via a vibration damping device 192. The precision instrument 191 is a measuring device that measures, for example, temperature. A signal wiring 194 and a power supply wiring 195 are connected to the precision instrument 191.
[0077]
The vibration damping device 192 can adopt, for example, the structure illustrated in FIG. In the structure illustrated in FIG. 9, the vibration damping device 191 has three roles. The first role is to fix the precision instrument 191 to the structure 193 and to support the precision instrument 191. The second role is to control vibration transmitted from the structure 193. The third role is a function as a connector (connection member) of the signal wiring 194 and the power wiring 195 to the precision instrument 191.
[0078]
In the structure illustrated in FIG. 9, the vibration transmitted from the structure 193 to the precision instrument 191 is cut off or attenuated by the vibration damping device 192. In this structure, the vibration via the wiring is also damped by the damping device 192, so that unexpected vibration is prevented from being transmitted to the precision equipment. In addition, vibration design can be easily performed when designing the system.
[0079]
The vibration damping device 102 may be used in a state where the device is hung or supported from the side, in addition to being used in a state of receiving weight as illustrated in FIG. 9. Here, an example of wiring has been described, but the present invention can also be applied to piping. The example of FIG. 9 can also be applied to a case where a device that dislikes vibration is arranged near a device that generates vibration. Although FIG. 9 illustrates a case where a device that dislikes vibration is arranged, a device that generates vibration such as a generator or a pump may be arranged. In this case, the effect of preventing or reducing the vibration generated in the device 191 from being transmitted to the structure 193 is obtained. Also in this case, the fact that the vibration suppression device also serves as the wiring and the piping can prevent the propagation of the vibration via the wiring and the piping, as in the case illustrated in FIG. 9.
[0080]
In the above examples, an example of damping vibration to or from an appropriate device has been described. However, the present invention can be applied to damping of vibration transmitted from an appropriate structure to another structure. Although the present invention has been specifically described based on the embodiments, the present invention is not limited to the above-described embodiments, and can be modified without departing from the gist thereof.
[0081]
【The invention's effect】
The effects obtained by typical aspects of the invention disclosed in the present application are as follows. That is, the present invention provides a vibration damping device that attenuates vibration transmitted through wiring and piping. Further, according to the present invention, in a vibration damping device for attenuating vibration transmitted through wiring and piping, a vibration damping device having small temperature dependence of vibration damping characteristics is provided. Further, according to the present invention, in a vibration damping device for attenuating vibration transmitted through a wiring or a pipe, a vibration damping device in which the vibration damping performance is not limited in the direction of vibration displacement is provided. Further, according to the present invention, in a state where the first structure is fixed to the second structure by the vibration damping device, complicated vibration is transmitted from the first structure to the second structure by vibration transmitted through the wiring and the piping. The problem is solved.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a vibration damping device using the present invention.
FIG. 2 is a diagram illustrating an example of use of a vibration damping device.
FIG. 3 is a diagram showing another example of the vibration damping device.
FIG. 4 is an enlarged view of a part of the structure shown in FIG. 3;
FIG. 5 is a diagram illustrating an example of a wiring member.
FIG. 6 is a diagram showing another example of the vibration damping device.
FIG. 7 is a diagram showing another example of the vibration damping device.
FIG. 8 is a diagram illustrating an example of a structure for damping vibration transmitted through a pipe.
FIG. 9 is a diagram showing another application example of the present invention.
FIG. 10 is a diagram showing an example of a passive vibration damping joint according to the related art.
FIG. 11 is a diagram illustrating an example of a passive vibration damping joint according to the related art.
FIG. 12 is a diagram illustrating an example of a passive vibration damping joint according to the related art.
FIG. 13 is a diagram illustrating an application example of a vibration damping device according to the related art.
[Explanation of symbols]
Reference numerals 100: vibration damping joint, 101: first coupling member, 102: second coupling member, 103: receptacle, 104: receptacle, 105: wiring member, 106: connection terminal, 107: screw, 108: connection terminal, 109: screw Reference numerals 121, coaxial cable, 122, coaxial cable, 131, first coupling member, 132, second coupling member, 135, coaxial cable, 136, connector, 137, connector, 138, coaxial cable, 139, plug, 140, receptacle Reference numerals 141, coaxial cable, 142, receptacle, 143, single wire, 144, band-shaped metal plate, 151, coaxial cable, 152, plug, 153, elastic member, 154, fastener, 161, coaxial cable, 162, longitudinal elasticity Members, 161, power generation facilities, 162, diesel engines, 163, generators, 164, pedestals, 65: Damping support member, 166: Floor (or base), 167: Fuel pipe, 168: Cooling water supply pipe, 169: Cooling water drain pipe, 170: Damping device, 171: Damping device, 172: Damping Apparatus, 173 first connecting member, 174 second connecting member, 175 first pipe connecting means, 176 second pipe connecting means, 177 pipe, 178 long elastic member, 179 pipe connecting section, 180 ... Piping connection part, 191 ... Precision instrument, 192 ... Vibration suppression device, 193 ... Structure, 194 ... Signal wiring, 195 ... Power supply wiring, 201 ... Vibration damping material, 202 ... Disc, 203 ... Disc, 204 ... Male Screw, 205: male screw, 210: structure, 211: structure, 212: bolt, 213: nut, 214: damping material, 221: coupling member, 223: casing, 224: casing, 226: damping material, 27 arrow, 231 equipment, 232 damping material, 233 floor, 701 first coupling member, 702 second coupling member, 703 wiring member, 704 first coupling member, 705 second coupling member , 706... Wiring members.

Claims (16)

A single or a plurality of wiring members having a predetermined elasticity,
A first coupling member connected to one end of the wiring member;
A second coupling member connected to the other end of the wiring member,
First wiring connection means provided on the first coupling member;
Second wiring connection means provided on the second coupling member;
Including vibration damping device. The wiring member is a coaxial cable,
2. The vibration damping device according to claim 1, wherein the first coupling member or the second coupling member is made of a conductive material, and is connected to a shield line of the coaxial cable. 3. The vibration damping device according to claim 1, wherein a bending stress acts on the wiring member. 4. The vibration damping device according to claim 1, wherein the plurality of wiring members include a plurality of wiring members having different bending directions. 5. The whole has a spherical shape,
The first coupling member is located at one pole of the spherical shape,
The second coupling member is located at the other pole of the spherical shape,
The vibration damping device according to any one of claims 1 to 4, wherein the plurality of wiring members are located along the spherical shape. The vibration damping device according to any one of claims 1 to 4, wherein the wiring member has a bent shape or a spiral shape. One or more longitudinal elastic members;
A first coupling member connected to one end of the longitudinal elastic member;
A second coupling member connected to the other end of the longitudinal elastic member;
A wire having one end connected to the first coupling member and the other end connected to the second coupling member;
First wiring connection means provided on the first coupling member;
Second wiring connection means provided on the second coupling member;
Including vibration damping device. The wiring is a coaxial cable,
The vibration damping device according to claim 7, wherein the first coupling member or the second coupling member is made of a conductive material, and is connected to a shield line of the coaxial cable. 9. The vibration damping device according to claim 7, wherein a bending stress acts on the longitudinal elastic member. The vibration damping device according to any one of claims 7 to 9, wherein the plurality of longitudinal elastic members include a plurality of longitudinal elastic members having different bending directions. The whole has a spherical shape,
The first coupling member is located at one pole of the spherical shape,
The second coupling member is located at the other pole of the spherical shape,
The vibration suppression device according to any one of claims 7 to 10, wherein the plurality of longitudinal elastic members are located along the spherical shape. The said longitudinal elastic member has a bending shape or a spiral shape, The vibration suppression apparatus of any one of Claims 7-10 characterized by the above-mentioned. A first coupling member;
A second coupling member;
A single or a plurality of elastic pipes connected to the first coupling member and the second coupling member for transporting fluid and absorbing vibration between the first coupling member and the second coupling member. Components,
Including vibration damping device. 14. The vibration damping device according to claim 13, wherein the plurality of piping members include a plurality of piping members that are curved and the directions of the bending are different from each other. One or more longitudinal elastic members;
A first coupling member connected to one end of the longitudinal elastic member;
A second coupling member connected to the other end of the longitudinal elastic member;
A pipe having one end connected to the first coupling member and the other end connected to the second coupling member;
First piping connection means provided on the first coupling member;
Second pipe connection means provided on the second coupling member;
Including vibration damping device. The vibration damping device according to any one of claims 1 to 15, wherein the vibration damping device is used for fixing a second structure to the first structure.

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