JP3058079U - Rocking member for anti-vibration table - Google Patents

Abstract

(57) [Problem] To provide an anti-vibration table rocking member that is hard to move from an attached portion and can be turned without using a wrench or the like. SOLUTION: A rubber cap (1b) is covered on a nut (1a), and a through hole (1c) is provided at a position corresponding to a screw hole of the nut (1a) of the cap (1b). The diameter (R ₂ ) of the through hole (1c) is smaller than the diameter (R ₁ ) of the screw hole of the nut (1a).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an anti-vibration member used as a connecting member for an upper and lower pedestal of an anti-vibration table.

[0002]

[Prior art]

 FIG. 1 is a diagram showing the vibration isolation table (A). The anti-vibration table is used for the purpose of preventing the vibration of the equipment mounted on the gantry from being transmitted to the installation floor, etc., and the lower gantry in contact with the floor surface and the upper gantry for mounting the equipment are used. There is a spring between them to absorb vibration.

[0003] In the figure, (13) is a lower cup portion provided on a lower gantry (11), and (12) is an upper portion nested with a lower cup portion (13) provided on an upper gantry (10). It is a cup part. A spring (14) is housed in a space formed by the lower cup portion (13) and the upper cup portion (12).

When the device is placed, the upper gantry (10) moves downward so as to sink by the weight of the device, and stops at a position where the weight is balanced with the spring (14). If there is a vibration or the like of the device mounted on the upper pedestal (10), it can be moved up and down around the balanced position to absorb the vibration. When there is horizontal vibration, the upper pedestal (10) can also move to some extent in the horizontal direction.

However, since the upper cup (12) is merely covered by the lower cup (13), if the upper pedestal (10) moves too much with respect to the lower pedestal (11), the upper pedestal is moved from the lower pedestal. There is a risk that the upper frame (10) will come off or the inclination of the upper frame (10) will be too large.

[0008] Furthermore, when no equipment is placed on the upper gantry (10), the upper gantry (10) may be pushed up high and come off the lower gantry (11).

Therefore, the upper and lower pedestals are connected using a connecting member composed of bolts, nuts, and the like, and a nut as a rocking member is attached to the connecting member, so that the upper pedestal (10) is connected to the lower pedestal (11). The range of movement is restricted.

[0008] However, since the nut for locking is mounted in a loose state, not a tightened state, the nut is gradually moved due to vibration or the like if a normal nut is used. As a result, the movable range of the upper gantry changes.

Therefore, in order to prevent the nut from moving, a double nut is used, and the nut is tightened using a tightening tool such as a wrench.

[0010] However, when a plurality of vibration isolation tables are arranged side by side, it is difficult to insert a wrench or the like into a narrow gap between the vibration isolation tables and turn the nut.

[0011]

[Problems to be solved by the invention]

 Therefore, there has been a demand for a vibration-damping table rocking member that is difficult to move from the attached position and that can be turned by hand without using a wrench or the like.

[0012]

[Means for Solving the Problems]

In the vibration damping member according to the first aspect of the present invention, the nut (1a) is covered with a rubber cap (1b) and corresponds to the screw hole of the nut (1a) of the cap (1b). A through hole (1c) is provided at a position where the hole (1c) is formed, and the diameter (R ₂ ) of the through hole (1c) is smaller than the diameter (R ₁ ) of the screw hole of the nut (1a).

According to this, since the diameter of the through hole (1c) of the rubber cap (1b) attached to the nut (1a) is smaller than the diameter of the screw (2), the portion of the through hole (1) Since it is held so as to be fastened, the rocking member (1) of the present invention does not move from the mounting position. Also, since it is fixed by tightening rubber, unlike conventional fixing with a double nut, it can be turned by hand without using a wrench.

According to a second aspect of the present invention, there is provided a vibration damping table rocking member, comprising: a metal ring (5a) having a screw hole; and a rubber attached to at least one surface of the ring (5a). plate becomes from the (5b), the rubber plate in the center of (5b) are through-hole (5c) is provided, the diameter of the through hole (5c) (R ₁₂₎ is the metal ring (5a) Characterized by being smaller than the diameter of the screw hole (R ₁₁ ).

According to this, since the diameter of the through hole (5c) of the rubber plate (5b) attached to the metal ring (5a) is smaller than that of the screw (2), that portion surrounds the screw (2). The rocking member (5) of the present invention does not move from the mounting position. In addition, since the fixing is performed by tightening the rubber as in the case of the first aspect, it can be turned by hand without using a wrench or the like.

According to a third aspect of the present invention, there is provided an anti-vibration table rocking member in which a nut is covered with a synthetic resin cap, and a through hole is provided at a position corresponding to the screw hole of the nut of the cap. The diameter of the through hole is smaller than the diameter of the screw hole of the nut.

According to a fourth aspect of the present invention, there is provided an anti-vibration table rocking member comprising: a metal ring provided with a screw hole; and a synthetic resin ring attached to at least one surface of the ring. The diameter of the through hole provided at the center of the resin ring is smaller than the diameter of the screw hole of the metal ring.

In these cases, since the through-hole of the cap or ring made of synthetic resin has a smaller diameter than the screw, the screw bites into that portion, and the rocking member does not move from the mounting position. In addition, if the diameter of the through-hole is set to an appropriate size, unlike a conventional fixing with a double nut, it can be turned by hand without using a wrench or the like.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described using preferred embodiments.

Embodiment 1 FIG. 2 is a diagram showing a use state of this embodiment. In the figure, (2) is a screw such as a bolt fixed to the lower base (11), and (3a) and (3b) are screw fixing nuts for fixing the screw (2). The screw (2) reaches the inside of the upper pedestal (10) through a through hole (10a) provided in the lower part of the upper pedestal (10). (6) is a washer attached to the through hole (10a), and there is a gap between the washer and the screw (2) penetrating the inner side.

(1) is a rocking member of the present embodiment, which is mounted above the through hole (10a) of the screw (2). That is, in the present embodiment, when the upper gantry (10) swings largely in the direction away from the lower gantry (11), the upper gantry (10) acts to limit the movement thereof. FIG. 4 is a cross-sectional view showing the configuration of the present embodiment, and FIG. 5 is a view of the present embodiment viewed from below.

(1a) is a nut corresponding to the screw (2). (1b) is a rubber cap attached so as to cover the nut.

As the nut (1a), an off-the-shelf nut can be used, and the nut (1a) can be made simply by fitting it over the rubber cap (1b). If the shape of the part where the nut (1a) of the rubber cap (1b) is fitted is made slightly smaller than the outer shape of the nut (1a), the elasticity of the rubber cap (1b) allows the two parts to be firmly attached without bonding etc. Can be attached.

[0024] A through hole (1c) is provided in the center of the rubber cap (1b) (a portion corresponding to the screw hole of the nut). The diameter (R ₂ ) of the through hole (1c) is smaller than the diameter (R ₁ ) of the screw hole provided in the nut. Therefore, when this locking member is attached to the screw (2) such as a bolt, the periphery of the through hole (1c) of the rubber cap (1b) comes into contact with the screw (2), and the rubber cap (1b) is screwed. (2) is held so as to be tightened from the periphery.

Therefore, the rocking member (1) does not move from the position where it is attached, and it is possible to prevent the movable range of the upper gantry from being changed.

Also, since the screw (2) is held by rubber having high elasticity, it can be turned by hand without using a wrench or the like. Therefore, even when there is no space for inserting and turning a wrench as in the case where a plurality of vibration isolation tables are arranged side by side, the hand can be inserted and turned, so that the position of the rocking member can be adjusted without any problem.

Second Embodiment FIG. 3 is a diagram illustrating a use state of the present embodiment. In the figure, reference numeral (5) denotes a rocking member attached to the screw (2) of the present embodiment, one of which is disposed below a through hole (10a) provided at a lower portion of the upper pedestal (10). . That is, in the present embodiment, when the upper gantry (10) swings largely in the direction approaching the lower gantry (11), it works to restrict the movement thereof.

FIG. 6 is a sectional view showing the configuration of the present embodiment, and FIG. 7 is a view of the present embodiment as viewed from below.

(5a) is a metal ring provided with a threaded screw hole (5c) corresponding to the screw (2). (5b) is a rubber plate attached to one surface of the metal ring (5a). In the embodiment, both are fixed by the adhesive, but they may be attached by other means. Further, the rubber plate (5b) may be attached to both sides of the metal ring (5a).

[0030] A through-hole (5c) is provided in the center of the rubber plate (5b) (a portion corresponding to the screw hole of the nut). The diameter (R ₁₂ ) of the through hole (5c) is smaller than the diameter (R ₁₁ ) of the screw hole provided in the metal ring (5a). Therefore, when this rocking member is attached to the screw (2) such as a bolt, the periphery of the through hole (5c) of the rubber plate (5b) comes into contact with the screw (2), and the rubber plate (5b) comes into contact with the screw (2). ) Is held so as to be tightened from the surroundings.

[0031] Therefore, the rocking member (5) does not move from the position where it is attached, and it is possible to prevent the movable range of the upper gantry from being changed. As in the first embodiment, it can be turned by hand without using a wrench or the like.

Example 3 A synthetic resin cap was used in place of the rubber cap of Example 1, and a vibration isolating table rocking member having the same configuration as that of Example 1 was formed. Also in the case of the present embodiment, the diameter of the through hole provided in the synthetic resin cap is smaller than the diameter of the screw hole provided in the nut. Therefore, when the rocking member is attached to a screw such as a bolt, the periphery of the through hole of the synthetic resin cap comes into contact with the screw, and the screw bites into the synthetic resin cap, so that the screw is not easily loosened. Therefore, the rocking member does not move from the position where it is attached, and it is possible to prevent the movable range of the upper gantry from being changed.

Further, the hardness of the rocking member can be changed by changing the diameter of the through hole. In other words, if the diameter of the through hole of the cap is slightly smaller than the diameter of the screw hole, the amount of thread biting into the synthetic resin cap is small, and the screw can be turned by hand without using a wrench etc. Can be. Therefore, even if there is no space to insert and rotate the wrench as in the case where a plurality of vibration isolation tables are arranged side by side, the hand can be inserted and turned, and the position of the rocking member can be adjusted without any problem. .

Example 4 A vibration isolating table rocking member having the same configuration as that of Example 2 was formed except that a ring made of a synthetic resin was used instead of the rubber plate in Example 2. Also in the case of this embodiment, the diameter of the through hole provided in the synthetic resin ring is smaller than the diameter of the screw hole provided in the nut.

Therefore, when this rocking member is attached to a screw such as a bolt, the periphery of the through hole of the synthetic resin ring comes into contact with the screw, and the screw thread bites into the synthetic resin ring, so that it is difficult to loosen. . For this reason, the rocking member does not move from the position where it is attached, and it is possible to prevent the movable range of the upper gantry from being changed.

In this embodiment, similarly to the third embodiment, by setting the diameter of the through hole of the synthetic resin ring to an appropriate diameter, the ring can be turned by hand without using a wrench or the like. .

[0037]

[Effect of the invention]

 As described above, according to the present invention, it is possible to provide an anti-vibration table rocking member that is hard to move from a mounted position and can be turned without using a wrench or the like.

[Brief description of the drawings]

FIG. 1 is a diagram showing a vibration isolation table.

FIG. 2 is a diagram illustrating a use state of the first embodiment.

FIG. 3 is a diagram showing a use state of the second embodiment.

FIG. 4 is a sectional view showing the configuration of the first embodiment.

FIG. 5 is a diagram of the first embodiment viewed from below.

FIG. 6 is a sectional view showing the configuration of the second embodiment.

FIG. 7 is a diagram of Example 2 as viewed from below.

[Explanation of symbols]

 (A) Anti-vibration table (1) Anti-vibration member (Example 1) (1a) Nut (1b) Rubber cap (1c) Through hole of rubber cap (2) Screw (bolt, etc.) (3a), (3b ) Screw fixing nut (5) Locking member (Example 2) (5a) Metal ring (5b) Rubber plate (5c) Rubber plate through hole (6) Washer (10) Upper mount (11) Lower mount ( 14) Spring

Claims (4)

[Utility model registration claims] A nut is covered with a rubber cap, and a through hole is provided at a position corresponding to the screw hole of the nut of the cap, and the diameter of the through hole is the diameter of the screw hole of the nut. A vibration damping member for a vibration damping table, which is smaller than the above. 2. A metal ring provided with a screw hole,
A rubber plate attached to at least one surface of the ring, and a through hole is provided at a center portion of the rubber plate, and a diameter of the through hole is larger than a diameter of a screw hole of the metal ring. An anti-vibration member for a vibration isolation table, which is also small. 3. A nut is covered with a cap made of synthetic resin, and a through hole is provided at a position corresponding to the screw hole of the nut of the cap, and the diameter of the through hole is equal to that of the screw hole of the nut. An anti-vibration table rocking member having a diameter smaller than the diameter. 4. A metal ring provided with a screw hole, and a synthetic resin ring attached to at least one surface of the ring, and a through-hole provided at a central portion of the synthetic resin ring. The diameter of the hole is smaller than the diameter of the screw hole of the metal ring.