JP2005282788A - Support structure of vibrator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide support structure of a vibrator, which bears the weight of the vibrator, can damp the vibration transmitted to a setting place, and always moves to return the vibrator to the original position. <P>SOLUTION: The support structure 1 of the vibrator is comprised of a foundation member 11 to support the vibrator V, a base member 12 fixed to the setting place PL, and a support member 13 installed between the foundation member 11 and the base member 12. The support member 13 is provided with support parts 131, 132 having a pair of curved recesses 134, 135 which are opposed to, and a plurality of pendulums 133 arranged between there. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a support mechanism that supports a vibrating body.

  When installing the vibration body at the installation location, the vibration body is installed at the installation location via a support mechanism having a vibration isolation capability in order to reduce the propagation of the vibration of the vibration body to the installation location. As a support mechanism having the vibration-proof capability, a laminated vibration-proof rubber is often used. Examples of the laminated anti-vibration rubber include those in which a plurality of rubber cylinders and metal discs are laminated, and metal plates are attached to both ends.

  One of the metal plates of the laminated anti-vibration rubber is fixed so as to come into contact with the installation place, the vibrator is placed on the upper part of the laminated anti-vibration rubber, and the other metal plate and the vibrator are fixed. . In this way, the vibrator is installed at the installation location using the laminated vibration-proof rubber.

The laminated anti-vibration rubber has high strength in the laminating direction (longitudinal direction) and a small spring constant in the direction orthogonal to the laminating direction (lateral direction). Since the laminated anti-vibration rubber has a high strength in the vertical direction, it can support a heavy vibrating body and has a low horizontal spring constant, so that the vibration-proof capability in the horizontal direction is high.
JP-A-9-303458

  However, the laminated anti-vibration rubber can dampen the vibration in the lateral direction, but the spring constant in the lateral direction is small, so that if the relative position of the vibrating body and the installation location greatly deviates, the vibrating body It takes time to return to the position, and in the worst case, it cannot return to the original position.

  In addition, when the installation location is inclined, the laminated anti-vibration rubber stops in a state where the rubber layer is deformed below the installation location due to the weight of the vibrating body, and the vibration isolation capability is extremely reduced. Or the anti-vibration ability will be lost.

  Therefore, the present invention is a support mechanism for supporting the vibrating body, which can withstand the weight of the vibrating body and attenuate the vibration propagated to the installation place. Further, the vibrating body is always automatically returned to the original position. An object of the present invention is to provide a support mechanism for a vibrating body that returns automatically.

  Further, the present invention is a support mechanism for supporting the vibrating body, and even when the vibrating body is installed at an installation location inclined by a predetermined angle, the vibration of the vibrating body can be attenuated, An object of the present invention is to provide a support mechanism for a vibrating body that automatically returns to a stable position when the tilt angle disappears.

  In order to achieve the above-described object, the present invention provides a vibrating body support mechanism for supporting a vibrating body, a base member that holds the vibrating body, a base member that is fixed to an installation place where the vibrating body is installed, The support member is provided between the base member and the base member, and the support member includes one or a plurality of support portions each having a pair of curved concave portions facing each other and a pendulum disposed therebetween. It has a feature.

  According to this configuration, since the support mechanism moves with the pendulum sandwiched between the concave portions of the support portion, the kinetic energy during the movement in the lateral direction can be smoothly converted into the potential energy, so that the vibration can be attenuated. . Thereby, it can reduce that the vibration of the said vibrating body propagates to the installation place of this vibrating body.

  In the above configuration, the pair of support portions may be formed integrally with the base member and the base member.

  According to this configuration, the upper support portion of the pair of support portions is formed integrally with the base member and the lower support portion is formed integrally with the base member, so that the number of parts can be reduced.

  In the above configuration, the pair of support portions can be exemplified by at least the concave portions having the same shape. Further, not only the shape of the recess, but also the upper support portion and the lower support portion may be bust images having substantially the same shape. As a result, it is possible to reduce the number of manufacturing steps of the constituent members, and accordingly, it is possible to manufacture at a low cost in a short time.

  The said structure WHEREIN: The curved surface of the recessed part of a support part can illustrate what is a concave groove extended in the longitudinal direction of a support part.

  According to this configuration, by arranging the longitudinal direction of the support portion in a direction orthogonal to the vibration direction, vibration can be stably supported in the orthogonal direction. Further, since the number of support portions can be reduced, the upper support portion and the lower support portion can be easily synchronized.

  The said structure WHEREIN: The curved surface of the recessed part of a support part can illustrate what is a curved shaft rotary body.

  According to this configuration, since the pendulum can move in any direction from the axis of the concave portion, a vibration body having a plurality of vibration directions or a vibration body having a complicated vibration pattern such as a vibration body that changes the vibration direction is used. It can be used as a support mechanism.

  In the above configuration, the pendulum has a vibration isolating member and a pair of sliding members fixed with the vibration isolating member sandwiched therebetween, and the side opposite to the vibration isolating member of the sliding member is configured by a curved surface. It may be.

  According to this configuration, since the vibration isolating member can be deformed to absorb vibrations, it is possible to enhance the ability of the support mechanism to attenuate the vibrations.

  In the above configuration, the pair of sliding members of the pendulum may be composed of two identical members. With this configuration, the number of manufacturing steps can be reduced, and manufacturing can be performed in a short time at a low cost.

  A Stirling refrigerator can be exemplified as the vibrating body. When the Stirling refrigerator using the Stirling refrigerator is installed at an installation location (for example, a floor surface of a machine room) where the Stirling refrigerator is installed, the Stirling of the vibration of the Stirling refrigerator is obtained by using the above support mechanism. Propagation to the refrigerator can be prevented, and noise and fatigue failure can be reduced.

  According to the present invention, the support mechanism supports the vibrating body, can withstand the weight of the vibrating body, can attenuate the vibration propagated to the installation place, and always return the vibrating body to the original position. It is possible to provide a support mechanism for a vibrating body that operates in the manner described above.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional view when a vibrating body is supported in a stable state by the vibrating body support mechanism according to the present invention. A support mechanism 1 shown in FIG. 1 includes a base member 11 that holds a vibrating body V, a base member 12 that is fixed to an installation place PL of the vibrating body V, and a support member that is disposed between the base member 11 and the base member 12. 13.

  The support member 13 includes an upper support portion 131 provided on the lower surface of the base member 11, a lower support portion 132 provided on the upper surface of the base member 12, and both support portions between the upper support portion 131 and the lower support portion 132. 131 and 132 and a pendulum 133 that contacts each other. Although the upper support part 131 and the lower support part 132 are not limited thereto, they are integrally formed with the base member 11 and the base member 12 and have the same shape. The opposing surfaces of the upper support 131 and the lower support portion 132 are formed by curved concave portions 134 and 135, respectively. As can be seen from FIG. 1, the concave portions 134 and 135 of the upper support portion 131 and the lower support portion 132 have a shape that is greatly inclined toward both ends. FIG. 2 is an exploded perspective view of a support portion of the support mechanism for the vibrator shown in FIG. As shown in FIG. 2, the concave portions 134 and 135 of the upper support portion 131 of the support portion 13 and the lower support portion 132 are curved concave grooves extending in a direction orthogonal to the vibration direction of the vibrating body V.

  The pendulum 133 includes a vibration isolating member 136 and a sliding member 137 disposed with the vibration isolating member 136 interposed therebetween. The vibration isolating member 136 is a member that attenuates vibration by being deformed, and is not limited thereto, but here is a disk-like elastic material (for example, a vibration isolating rubber) having a small spring constant (elastic coefficient). The vibration isolation member 136 and the sliding member 137 are fixed to each other. The sliding member 137 includes an upper sliding member 1371 that contacts the upper support portion 131 and a lower sliding member 1372 that contacts the lower support portion 132.

  As shown in FIG. 1, two support members 13 are attached between the base member 11 and the base member 12 in the vibration direction. However, the present invention is not limited to this. As the number of elements, ones that can stabilize the vibrating body V and the base member 11 can be widely used.

  3A to 3D are cross-sectional views showing a state of support by the support mechanism when the vibrating body vibrates. FIG. 3A shows a state in which the vibrating body V is not vibrating and the vibrating body V fixed to the base member 11 is supported on the base member 12 via the support member 13. As shown in FIG. 3A, the upper support portion 131 and the lower support portion 132 are coaxially and vertically stationary. At this time, the sliding members 1371 and 1372 of the pendulum 137 are in contact at the center of the recess 133 of the upper support 131 and the center of the recess 134 of the lower support 132. The pendulum 133 is stationary with a pair of sliding members 137 standing up and down with the vibration isolating member 1373 interposed therebetween.

  When the vibrating body V vibrates, the vibrating body V and the base member 11 move in the vibration direction (left direction in the figure) due to the vibration. At this time, the upper support portion 131 of the support member 13 moves with the movement of the base member 11 (see FIG. 3A). The upper support member 131 moves with the concave portion 134 in contact with the sliding member 1371 of the pendulum 133. The pendulum 133 is also pushed by the recess 131 and moves leftward. The pendulum 133 is also pushed by the recess 135 of the lower support part 132. As a result, the pendulum 133 rotates (clockwise here) so that the tip of the curved surface of the sliding member 137 is in contact with the curved surfaces of the recesses of the upper support 131 and the lower support 132. At this time, the pendulum 133 rises along the concave portion 135 of the lower support portion 132, and the upper support portion 131 rises as the concave portion 134 moves while sliding with the sliding member 1371 of the pendulum 133 (FIG. 3 ( B)).

  The movement of the vibrating body V and the base member 11 is stopped by converting the kinetic energy during the movement of the vibrating body V and the base member 11 into potential energy (see FIG. 3C). Thereafter, the upper support portion 131 is lowered while being in contact with the sliding member 1371 of the pendulum 133 at the concave portion 134. As a result, the curved surface of the recess 134 is urged to the right, and the upper support 131 moves to the right. Since the pendulum 133 is also stopped at a slightly raised position, the pendulum 133 is pushed by the concave portion 135 of the lower support portion 132 and moves rightward as it descends (see FIG. 3D). And the upper side support part 131 and the pendulum 133 return to the original position.

  Further, when the upper sliding member 1371 of the pendulum 133 is pushed by the concave portion 134 of the upper support portion 131, the energy transmitted from the upper sliding member 1371 is attenuated by the deformation of the vibration isolating member 136 and the lower side. It is transmitted to the sliding member 1372. Thereby, the vibration energy of the vibrating body V and the base member 11 is attenuated and transmitted to the base member 12.

  As described above, when the upper support portion 131 moves, the concave portion 134 moves while being in contact with the upper sliding member 1371 of the pendulum 133. The concave portion 134 is formed in a curved shape, and the curved surface of the concave portion 134 moves in contact with the upper sliding member 1371 so that the moving direction is smoothly switched from the lateral direction to the upward direction. Further, when the pendulum 133 moves in the lateral direction, the pendulum 133 moves smoothly while sliding with the curved surface of the concave portion 135 of the lower support portion 132. The energy attenuated by the anti-vibration member 136 of the pendulum 133 can be converted into potential energy by further smoothly rising along the curved surface. Thereby, it is possible to reduce the vibration of the vibrating body V and the base member 11 from propagating to the base member 12.

  In the support mechanism 1 shown in FIGS. 1 and 2, the curved surfaces of the concave portion 134 of the upper support portion 131 and the concave portion 135 of the lower support portion 132 have a cross-sectional shape that draws a parabola, but are not limited thereto. A curved surface having a curved cross-sectional shape that allows the pendulum 133 to slide smoothly, such as a suspension line, can be widely used. Further, the curved surfaces of the upper sliding member 1371 and the lower sliding member 1372 of the pendulum 133 can be widely adopted as the curved surfaces that allow the pendulum 133 to slide smoothly.

  4A and 4B are cross-sectional views showing another example of the state in which the vibrating body is supported using the vibrating body support mechanism according to the present invention. As shown in FIG. 4, the installation place PL of the vibrating body V is a place inclined by an angle θ, and the vibrating body V and the base member 11 to which the vibrating body V is fixed are also installed inclined. The upper support 131 moves downward along the installation place PL due to gravity. At this time, the upper sliding member 1371 of the pendulum 133 is biased by the force of gravity from the curved concave portion 134 of the upper support portion 131, and the pendulum 133 moves downward on the slope. When the pendulum 133 moves downward, the lower sliding member 1372 is biased with a force in the opposite direction from the curved surface of the concave portion 135 of the lower support portion 132. The vibrating body V and the vibrating body are balanced by the balance between the force biased by the upper support member 131 on the upper sliding member 1371 of the pendulum 133 and the force biased by the lower sliding member 372 from the lower support portion 132. The base member 11 to which V is fixed stops.

  As shown in FIG. 4, when the pendulum 133 is located inside the end of the lower support portion 132 in a stopped (balanced) state, the vibration of the vibrating body V propagates to the base member 12 in the same manner as described above. Can be prevented.

  When the inclination θ is 0, that is, when the inclination disappears, the pendulum 133 slides on the curved surface of the concave portion 135 of the lower support portion 132, and the concave portion 134 of the upper support portion 131 moves on the upper sliding member 1371 of the pendulum 133. Therefore, it automatically returns to the stable position as shown in FIG. Thereby, for example, even when an operation is performed in which the installation place PL is instantaneously tilted and then returned to the original position, the vibrating body V and the base member 11 supported by the support member 1 are greatly separated from the installation place PL. And can return to the rest position shown in FIG.

  Further, as shown in FIG. 4B, when the installation place PL is rotated to both sides by an angle θ and vibrates, the range in which the pendulum 133 does not protrude from both end portions of the upper support portion 131 and the lower support portion 132. Can be supported by using the support mechanism 1.

  FIG. 5 shows a sectional view of a Stirling cooler as an example of use of the support mechanism according to the present invention. A Stirling refrigerator A shown in FIG. 5 includes a main body 2, a Stirling refrigerator 3, a cooling side natural circulation circuit 4, and a heat radiation side natural circulation circuit 5.

  The main body 2 is surrounded by a wall formed of a heat insulating material, has a cooling chamber 21 for cooling articles, and has a machine room 22 for installing the Stirling refrigerator 3 at the upper part of the cooling chamber 21. Yes. The upper surface of the cooling chamber 21 also serves as the floor surface 221 of the machine chamber 22. The Stirling refrigerator 3 has a low temperature portion 31 that generates cold and a high temperature portion 32 that generates warm heat.

  The cooling side natural circulation circuit 4 has a condenser 41, an evaporator 42, and a refrigerant pipe 43. The condenser 41 is disposed in contact with the low temperature part 31 of the Stirling refrigerator 3. The evaporator 42 is disposed inside the cooling chamber 21. The evaporator 42 is disposed below the condenser 41. The evaporator 42 and the condenser 41 are connected by a refrigerant pipe 43, and a secondary refrigerant is sealed to form a loop thermosiphon.

  The secondary refrigerant is cooled by the cold heat of the low temperature portion 31 in the condenser 41, liquefies, flows down through the refrigerant pipe 43, and flows into the evaporator. The secondary refrigerant that has flowed into the evaporator 42 absorbs the heat of the air in the cooling chamber 21 and evaporates, flows through the refrigerant pipe 43, and flows into the condenser 41. The cooling-side natural circulation circuit 4 circulates the secondary refrigerant by utilizing a phenomenon in which high-temperature steam rises, a pressure difference due to a phase change of the secondary refrigerant, and a pressure difference when the liquid secondary refrigerant flows down. .

  Similarly to the cooling side natural circulation circuit 4, the heat radiation side natural circulation circuit 5 includes a condenser 51, an evaporator 52, and a refrigerant pipe 53. The evaporator 52 is disposed in contact with the high temperature portion 32 of the Stirling refrigerator 3. The condenser 51 is disposed above the evaporator 52. A natural circulation circuit is formed by connecting the evaporator 52 and the condenser 51 by a refrigerant pipe 53 and enclosing the refrigerant. The refrigerant absorbs the heat of the high temperature part 32 in the evaporator 52 and evaporates. The evaporated refrigerant flows through the refrigerant pipe 53 and flows into the condenser 51. In the condenser 51, the refrigerant releases heat to the air outside the condenser 51, and is cooled and liquefied. The liquefied refrigerant flows down the refrigerant pipe 53 and flows into the evaporator 52.

  The Stirling refrigerator 3 generates cold by compressing and expanding a working fluid enclosed therein by reciprocating a displacer (not shown) and a power piston. Since the Stirling refrigerator 3 has this structure, vibrations are generated. When this vibration propagates to the main body 2, noise is generated or fatigue failure due to vibration occurs.

  In order to avoid the occurrence of problems due to such vibrations, the support mechanism 1 according to the present invention is used when the Stirling refrigerator 3 as a vibrating body is attached to the installation place PL (floor surface 221). The support mechanism 1 includes a base member 11 to which the Stirling refrigerator 3 is fixed, a base member 12 fixed to the floor surface 221, and a support member 13 disposed between the base member 11 and the base member 12. Yes. As described above, the support mechanism 1 attenuates the vibration energy by the upper support 131 and the lower support 132 being displaced with the pendulum 133 interposed therebetween. As a result, the vibration generated in the Stirling refrigerator 3 can be reduced from propagating to the base member 12 and the floor surface 221 to which the base member 12 is fixed. Can be prevented.

  FIG. 6A shows a cross-sectional view of still another example of the support mechanism according to the present invention, and FIG. 6B shows an exploded perspective view of the support member of the support mechanism. A support member 63 of the support mechanism 6 shown in FIG. 6A includes an upper support portion 631, a lower support portion 632, and a pendulum 633. The upper support portion 63 is integrally formed with the base member 61 to which the vibrating body V is fixed. Further, the lower support portion 632 is integrally formed with the base member 62 fixed to the installation place PL where the vibrating body V is installed.

  As shown in FIG. 6B, the upper support portion 631 is formed in a columnar shape, and a concave portion 634 having a mortar-shaped curved surface is formed on the upper surface, and the concave portion 634 is disposed downward. The lower support portion 632 has the same shape as the upper support portion 631, and a recess 635 having a mortar-shaped curved surface is formed. The upper support portion 631 and the lower support portion 632 are installed such that the concave portions 634 and 635 face each other.

  The pendulum 633 includes a vibration isolating member 636 and a sliding member 637. The sliding member 637 includes an upper sliding member 6371 disposed in contact with the concave portion 634 of the upper support portion 631 and a lower sliding member 6372 disposed in contact with the concave portion 635 of the lower support portion 632. The upper sliding member 6371 and the lower sliding member 6372 are formed of curved shaft rotating bodies at portions that contact the recesses 634 and 635. The vibration isolation member 636 is a disk-shaped elastic member, although not limited thereto.

  In a state where the vibrating body V is not vibrating (stopped state), the pendulum 633 is disposed upright in a space formed by the upper support portion 631 and the recesses 634 and 635 of the lower support portion 632. At this time, the upper sliding member 6371 of the pendulum 633 is in contact with the central portion of the concave portion 634, and the lower sliding member 6372 is in contact with the central portion of the concave portion 635. As the pendulum 633 comes into contact with the recesses 634 and 635, the upper support portion 631 is supported so as to be positioned directly above the lower support portion 632.

  In the support mechanism 1, the concave portions 634 and 635 of the upper support portion 631 and the lower support portion 632 are formed in a mortar shape. Therefore, the moving direction of the pendulum 633 is not limited to the support mechanism 1 shown in FIG. Can move in the direction. As a result, the support mechanism 6 can also be used when the vibrating body V vibrates in a complicated manner such as vibrating in two or more directions having different vibration directions. Further, although not shown, four support mechanisms 6 may be exemplified in order to stably support the base member 11 on the base member 12. Moreover, it is not limited to it, The thing which can support stably can be employ | adopted widely.

  In the present embodiment, the upper support portion 631 and the lower support portion 632 have been described as having a cylindrical shape as an example, but are not limited thereto, such as a rectangular parallelepiped having a mortar-shaped curved surface on the upper surface or the lower surface, a hexagonal column, etc. A columnar member can be widely employed.

  Moreover, although the shape of the recessed part 634 of the upper side support part of the support mechanism 6 and the recessed part 635 of the lower side support part is a parabolic rotating body shape, it is not limited to it. Various types such as a truncated spherical shape that do not hinder the smooth movement of the pendulum 633 can be used.

  In each of the above embodiments, the upper support 131 (631) of the support 1 (6) is integrally formed with the base member 11 (61), and the lower support 132 (632) is integrally formed with the base 12 (62). However, the present invention is not limited thereto, and at least one of the upper support portion 131 (631) and the lower support portion 132 (632) is formed to be detachable. It may be fixed using fixing means such as adhesion, bolting, press-fitting and the like. In this case, the upper support portion 131 (631) and the lower support portion 132 (632) can be easily aligned.

  Further, in each of the above-described embodiments, the support mechanism has been exemplified in which the upper support portion and the lower support portion have the same shape, but may have different sizes and different shapes. Further, only the recesses may have different shapes. The upper sliding member and the lower sliding member of the pendulum may have the same shape, or may have different sizes and different shapes.

It is sectional drawing when a vibrating body is supported in the stable state with the support mechanism of the vibrating body concerning this invention. It is a disassembled perspective view of the support part of the support mechanism of the vibrating body shown in FIG. FIGS. 4A to 4D are cross-sectional views of a support state by the support mechanism of the vibration body illustrated in FIG. 1 when the vibration body vibrates. FIGS. 4A and 4B are cross-sectional views of other examples in which the vibrating body is supported using the vibrating body support mechanism according to the present invention. It is sectional drawing of the Stirling cooler which is the usage example of the support mechanism concerning this invention. FIG. (A) is a cross-sectional view of still another example of the vibrating body support mechanism according to the present invention, and FIG. (B) is an exploded perspective view of the vibrating body support mechanism shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support mechanism 11 Base member 12 Base member 13 Support member 131 Upper support part 132 Lower support part 133 Pendulum 134 Recess 135 Recess 136 Anti-vibration member 137 Slide member 1371 Upper slide member 1372 Lower slide member 2 Main body 21 Cooling Chamber 22 Machine room 221 Floor 3 Stirling refrigerator 31 Low temperature section 32 High temperature section 4 Secondary refrigerant circulation circuit 41 Condenser 42 Evaporator 43 Refrigerant pipe 5 Heat radiation side natural circulation circuit 51 Condenser 52 Evaporator 53 Refrigerant pipe 6 Support mechanism 61 Base member 62 Base member 63 Support member 631 Upper support portion 632 Lower support portion 633 Pendulum 634 Recess 635 Recess 636 Vibration isolation member 637 Slide member 6371 Upper slide member 6372 Lower slide member A Stirling cooler V Vibrator PL installation location

Claims (8)

In the support mechanism of the vibrator that supports the vibrator,
A base member for holding the vibrating body;
A base member fixed to an installation location for installing the vibrating body;
A support member provided between the base member and the base member;
The support member is provided with one or a plurality of support portions each having a pair of curved concave portions facing each other and a pendulum disposed therebetween.   2. The vibrating body support mechanism according to claim 1, wherein the pair of support portions are formed integrally with the base member and the base member.   The vibrating body support mechanism according to claim 1, wherein at least the recesses of the pair of support portions have the same shape.   The vibrating body support mechanism according to claim 1, wherein the curved surface of the concave portion of the support portion is a concave groove extending in a longitudinal direction of the support portion.   4. The vibrating body supporting mechanism according to claim 1, wherein the curved surface of the concave portion of the supporting portion is a curved shaft rotating body. The pendulum has a vibration isolating member and a pair of sliding members that are fixed with the vibration isolating member interposed therebetween.
The vibration member support mechanism according to claim 1, wherein a side of the sliding member opposite to the vibration isolating member is formed of a curved surface.   7. The vibrating body support mechanism according to claim 6, wherein the pair of sliding members of the pendulum includes two identical members.   The vibrating body support mechanism according to claim 1, wherein the vibrating body is a Stirling refrigerator and is used when the Stirling refrigerator is installed in a refrigerator.

Images