JPH058073U - Vibration isolation device - Google Patents

Abstract

(57) [Summary] [Problem] To provide a vibration isolation device 10 for preventing vibration of the base isolation table 18 in the vertical direction and for guiding and moving only in the horizontal direction when vibration propagates to the leaf springs 14, 14. . [Structure] The width of the rectangular leaf springs 14, 14 is divided into three by the two slits 20, 20 at a ratio of 1: 2: 1, and the divided leaf springs 22, 22 at a ratio of 1 are fixed to the support base 12. At the same time, the split leaf springs 24 having a ratio of 2 are attached to the projecting end portions 18a of the vibration isolating base 18, and the restoring force of the split leaf springs 22, 22 having a ratio of 1 and the split leaf springs 24 having a ratio of 2 are set. Equalize resilience. As a result, vibrations are generated in the leaf spring members 14, 1
When the plate spring members 14 and 14 are propagated to 4 and bent by the weight of the vibration isolating base 18, the vibration isolating base 18 moves while being guided only in the horizontal direction without swinging in the vertical direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to an anti-vibration device, and more particularly, to support both ends of a vibration isolation table with a pair of leaf spring members. The present invention relates to a vibration isolation device that isolates vibrations that propagate to a vibration isolation table.

[0002]

[Prior art]

  Conventionally, as shown in FIG. 5, a vibration isolator of this type has a vibration isolation table on which a vibration isolator or the like is mounted. 1 is attached to the upper ends of the leaf springs 3 and 3 via bearings 2 and 2 fixed to both ends thereof. The lower ends of the leaf springs 3, 3 are connected to each other and are fixed to the floor surface 4 of a factory or the like. Therefore , If the earthquake or traffic vibration propagates from the floor surface 4 to the leaf springs 3 and 3, the leaf springs 3 and 3 will be released. The shaking table 1 bends due to its own weight. Vibration is eliminated by the bending of the leaf springs 3 and 3. Therefore, it is possible to prevent the vibration from propagating to the vibration isolation table 1.

[0003]

[Problems to be solved by the device]

  However, in the conventional vibration isolator, when the vibration propagates to the leaf springs 3 and 3, the plate Since the bottoms 3 and 3 bend with their lower ends as fulcrums, when the vibration isolation base 1 moves x in the horizontal direction, It comes to move up and down h. Therefore, the vibration isolation base 1 also shakes in the vertical direction. Work that adversely affects the vibration-removing device placed on the shaking table 1 and works on the vibration-free table 1 It has the drawback of putting people at risk.

[0004]   The present invention has been made in view of such circumstances, and prevents the vibration of the vibration isolation base in the vertical direction. An object of the present invention is to provide a vibration isolation device that can be eliminated.

[0005]

[Means for solving the problem]

  In order to achieve the above object, the present invention divides the width into three parts at a ratio of 1: 2: 1. , The two slits are formed in parallel to a predetermined position in the longitudinal direction. A pair of rectangular leaf spring members are located on the first supporting base so as to face each other, and While fixing the split leaf spring in the ratio of 1 of the member to the first supporting base, It is characterized in that the split leaf springs are attached to both ends of the base.

[0006]

[Action]

  According to the present invention, the width of the first rectangular leaf spring member is made up of two slits in a ratio of 1: 2: 1. Divided into three parts, and a divided leaf spring of one part is fixed to the first support base and Install the split leaf springs at the ratio of 2 to both ends of the base. Therefore, the vibration is the first leaf spring. When the first plate spring member propagates to the member and is bent by the weight of the vibration-isolating base, the division is 1 Since the restoring force of the leaf spring is equal to the restoring force of the split leaf spring with a ratio of 2, It moves only by being guided horizontally without swaying.

[0007]   Further, the second pair of leaf spring members are attached in the mounting direction of the first pair of leaf spring members. The second plate spring member is positioned on the second support base in a direction orthogonal to the first plate, and the ratio of the second leaf spring member is 1 Of the second leaf spring member is fixed to the second supporting base, and the split leaf spring of the second leaf spring member is Attach the feet to both sides of the first support. This makes it possible to counter the vibrations propagated from two directions. Can respond.

[0008]

【Example】

  Hereinafter, preferred embodiments of a vibration isolator according to the present invention will be described in detail with reference to the accompanying drawings. It   FIG. 1 shows a first embodiment of a vibration isolator 10 according to the present invention. A pair of leaf springs 14 and 14 are fixed on both sides of the support 12 so as to face each other. The support The holding table 12 is installed on the floor surface of a factory (not shown) and has a concave shape inside thereof. A groove 16 is formed, and the leaf springs 14, 14 are fixed to both side surfaces of the groove 16. Further, a vibration isolation table 18 is provided in the groove 16 of the support table 12.

[0009]   The leaf spring 14 is formed in a rectangular shape as shown in FIG. 20 and 20 are formed. The two slits 20, 20 are under the support base 12. It is formed in parallel from the end to the vicinity of the upper end, so that the three split leaf springs 22, 24 are formed. , 22 are formed. Further, the two slits 20, 20 are formed by the split leaf spring 22. And the width b of the split leaf spring 24 are formed at a ratio of 1: 2.

[0010]   The split leaf springs 22, 22 are fixed to the support base 12, and the split leaf springs are The projections 18a, 18a extending from both ends of the vibration isolation base 18 are fixed to the bed 24. ing.   In addition, the groove 2 is formed in the support base 12 located on the opposite side of the split leaf spring 24 from the vibration isolation base 18. 6, 26 are formed. This groove 26 is sufficient for the protruding portion 18a of the vibration isolation table 18 to be formed. It is formed in a size to include it.

[0011]   Next, referring to FIG. 3, the operation of the vibration isolator 10 configured as described above will be described. explain.   When the vibration in the X direction shown in FIG. 3 propagates to the leaf springs 14 and 14 via the support base 12, The leaf springs 14 and 14 are bent by the weight of the vibration isolation table 18 as shown by the dotted line in the figure. At this time, Since the split leaf springs 22, 22 and the split leaf spring 24 are formed with a width ratio of 1: 2, The sum of the width dimensions of the two split leaf springs 22, 22 and the width dimension of the split leaf spring 24 Are equal. Therefore, the restoring force of the two split leaf springs 22, 22 and the split leaf spring 24 Since the restoring forces of the vibrations are the same, the vibration isolation table 18 shakes vertically as shown by the dotted line in the figure. It moves without being guided only in the horizontal direction.

[0012]   FIG. 4 shows a second embodiment of the vibration isolator according to the present invention, which is shown in FIG. The vibration isolator 10 is attached to the vibration isolator 28.   The support base 30 of the vibration isolation device 28 is orthogonal to the support base 12 of the vibration isolation device 10. Installed in the direction. Further, the pair of leaf springs 32, 32 are the leaf springs 14 of the vibration isolation device 10. , 14 are fixed to the support base 30 in the orthogonal direction. In the leaf springs 32, 32, Similar to the leaf springs 14 and 14, two slits 34 and 34 are formed to form three split plates. Springs 36, 38, 36 are formed. These two slits 34, 34 are Formed at a position where the width a of the split leaf spring 36 and the width b of the split leaf spring 38 are in a ratio of 1: 2. To be done. Further, the split leaf springs 38, 38 are provided on both sides of the support base 12 of the vibration isolation device 10. The supporting plates welded to the side surfaces 12a, 12a are fixed.

[0013]   According to the second embodiment having such a configuration, the vibration in the X direction is supported by the vibration isolator 28. Propagate to the support base 12 of the vibration isolation device 10 via the holding base 30 and the pair of leaf springs 32, 32. Then, as shown in FIG. 3, the vibration isolation table 18 does not sway vertically but only horizontally. Move to be guided by.   Further, the vibration in the Y direction in FIG. 4 propagates to the leaf springs 32, 32 via the support base 30. Then, the leaf springs 32 and 32 are bent by the weight of the vibration isolation device 10. At this time, the split leaf spring 36, Since the width ratio of 36 and the split leaf spring 38 is 1: 2, two split leaf springs are provided. The width dimension of the split leaf spring 38 becomes equal to the sum of the width dimensions of 36, 36. Servant Therefore, the restoring force of the two split leaf springs 36, 36 and the restoring force of the split leaf spring 38 are equal. Therefore, the vibration isolation device 10 is guided only in the horizontal direction without swinging in the vertical direction. Moving. As a result, the vibration isolation table 18 of the vibration isolation device 10 is guided only in the horizontal direction. It

[0014]   As described above, according to the second embodiment, the vibrations propagating from the two directions of the X direction and the Y direction are not affected. Can respond.

[0015]

[Effect of device]

  As described above, according to the vibration isolation device of the present invention, the width of the rectangular leaf spring member Is divided into 3 parts by 2 slits at a ratio of 1: 2: 1 and supports a split leaf spring at a ratio of 1 Attach the split leaf springs in the ratio of 2 to both ends of the vibration isolation base, Since the restoring force of the split leaf springs of the ratio and the restoring force of the split leaf springs of 2 are made equal, If the vibration propagates to the leaf spring member and the leaf spring member bends due to its own weight, It can be guided and moved only in the horizontal direction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a vibration isolator according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a leaf spring member applied to the vibration isolator according to the present invention.

FIG. 3 is an explanatory view showing a vibration isolation condition of the vibration isolation device according to the present invention.

FIG. 4 is a perspective view showing a second embodiment of the vibration isolator according to the present invention.

FIG. 5 is an explanatory view showing an embodiment of a conventional vibration isolation device.

[Explanation of symbols]

10, 28 ... Vibration isolation device 12, 30 ... Support stand 14, 32 ... Leaf spring 18 ... Isolation stand 20, 34 ... Slit 22, 24, 36, 38 ... Split leaf spring

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Sadao Shibuya             1-14-1 Uchikanda, Chiyoda-ku, Tokyo             Stand Plant Construction Co., Ltd. (72) Creator Koichi Kajiwara             1-14-1 Uchikanda, Chiyoda-ku, Tokyo             Stand Plant Construction Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A first pair of rectangular leaf spring members in which two slits are formed in parallel to a predetermined position in the longitudinal direction so as to divide the width into three at a ratio of 1: 2: 1. Of the first leaf spring member are fixed to the first support base while the split leaf springs of 2 ratio are removed. An anti-vibration device attached to both ends of a shaking table. 2. A second pair of leaf spring members in a direction orthogonal to a mounting direction of the first pair of leaf spring members,
The split leaf spring having a ratio of 1 of the second leaf spring member is fixed to the second support base while being positioned on the second support base installed below the first support base. 2. The vibration isolator according to claim 1, wherein split leaf springs having a ratio of 2 of the leaf spring member are attached to both sides of the first support base.