Spring device

Abstract

To make it possible to receive a large load while reducing concentration of stress on an attachment part to which a spring gear is attached.SOLUTION: A spring gear 100 includes: a disc spring row 114 in which a plurality of laminated disc springs 112 are arranged linearly in a direction orthogonal to an expansion / contraction direction; a storage body 120 in which a row of the disc spring row 114 is accommodated; and a push-pull both-handed mechanism 151 to be pushed and drawn relative to the storage body 120 so as to compress the disc spring row 114 in both directions of pushing and drawing.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a spring device. [Background technology]

[0002] Patent Documents 1, 2 and 3 disclose techniques relating to a cylindrical spring device in which a compressive force acts on a disc spring in both the pushing and pulling directions.

[0003] Patent Document 4 discloses a technique relating to a mooring shock absorber for a floating marine structure in which a plurality of disc springs are arranged in a circular shape.

[0004] Patent Document 5 discloses a technique relating to a vibration isolation bearing in which four coil springs are arranged in parallel and fixed between frames. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2012-163134 A [Patent Document 2] JP 2013-002599 A [Patent Document 3] JP 2013-104438 A [Patent Document 4] Japanese Patent Application Publication No. 11-301574 [Patent Document 5] Japanese Patent Application Publication No. 06-300083 Summary of the Invention [Problem to be solved by the invention]

[0006] Although disc springs have a large load-bearing capacity, they can only withstand compressive forces. Therefore, the cylindrical spring devices in Patent Documents 1, 2, and 3 are equipped with a mechanism that applies compressive forces to the disc springs in both pushing and pulling directions so that they can withstand both tensile and compressive forces generated between two members.

[0007] When installing such cylindrical spring devices of Patent Documents 1, 2, and 3, for example, at the connecting portion of two seismically isolated buildings where a large load acts, it is necessary to handle the large load by increasing the size of the disc spring, etc. However, if the size of the disc spring is increased to handle the large load, stress will be concentrated at the mounting portion where the cylindrical spring device is attached.

[0008] In view of the above, an object of the present invention is to provide a spring device that is capable of withstanding a large load while reducing stress concentration at a mounting portion where the spring device is mounted. [Means for solving the problem]

[0009] The first aspect is a spring device comprising a disc spring row in which a single disc spring or multiple stacked disc springs are arranged in a straight line in a direction perpendicular to the expansion and contraction direction, a housing in which the disc spring row is housed in one or multiple rows, and a push-pull mechanism that is pushed and pulled relative to the housing, compressing the disc spring row in both the push and pull directions.

[0010] In the spring device of the first embodiment, a row of disc springs, each of which is a single disc spring or a plurality of stacked disc springs arranged in a straight line in a direction perpendicular to the direction of expansion and contraction, is accommodated in a housing in one or more rows. This allows a large spring force to be exerted without increasing the size of each disc spring. This means that the area of ​​the mounting portion where the spring device is attached is larger than that of a cylindrical spring device, and stress concentration at the mounting portion is reduced.

[0011] In a second aspect, the push-pull mechanism is the spring device described in the first aspect, and includes a tensioning member provided between a bottom of one end of the housing and a rear end of the row of disc springs, a piston portion that is pushed in through an opening formed in the other end of the housing and compresses the row of disc springs, a rod having one end connected to the tensioning member and the other end protruding from the housing, and an engagement portion that is provided on the piston portion and has the other end of the rod inserted so as to be relatively movable in the push-pull direction, and that engages with the engaged portion of the rod when the piston portion is pulled, moving the tensioning member toward the opening and compressing the row of disc springs against the peripheral portion of the opening.

[0012] In the spring device of the second embodiment, when the piston part is pushed, the piston part pushes in the disk spring row, compressing the disk spring row. When the piston part is pulled, the engaging part of the piston part engages with the engaged part of the tip of the rod, moving the tension member toward the opening side, and the disk spring row hits the periphery of the opening and is compressed. In this way, the disk spring row is compressed in both the pushing and pulling directions of the piston part, and the spring force can be generated continuously.

[0013] A third aspect is the spring device according to the second aspect, in which the rod is arranged radially outside each of the disc springs constituting the disc spring row, and positions the disc springs.

[0014] In the spring device of the third aspect, the rod is disposed radially outside the disc spring, which makes it possible to determine the cross-sectional area of ​​the rod and the diameter of the disc spring's central hole separately, in comparison with a configuration in which the rod is inserted into the disc spring's central hole. Effect of the Invention

[0015] According to the present invention, it is possible to reduce the concentration of stress on the mounting portion where the spring device is mounted, while allowing the spring device to withstand a large load. [Brief description of the drawings]

[0016] [Figure 1]FIG. 1A is a perspective view of the spring device as viewed from the piston side, and FIG. 1B is a perspective view of the spring device as viewed from the slide member side. [Diagram 2] FIG. 2 is a cross-sectional view of the spring device taken along line 2-2 in FIG. [Diagram 3] FIG. 3 is a cross-sectional view of the spring device taken along line 3-3 in FIG. [Figure 4] FIG. 1 is a plan view showing the spring array, the rod, and the flat plate portion. [Diagram 5] 3A is a cross-sectional view of the spring device in a pushed state corresponding to FIG. 2, and FIG. 3B is a cross-sectional view of the spring device in a pulled state corresponding to FIG. [Figure 6] 13 is an elevation view seen from the Y direction, showing a schematic diagram of a connection structure in which a first building and a second building are connected by a spring device. FIG. [Figure 7] FIG. 7 is an enlarged elevational view of the main part of FIG. 6. [Figure 8] FIG. 8 is a plan view of FIG. [Figure 9] 5 is a plan view corresponding to FIG. 4 and showing a spring row, a rod, and a flat plate portion of a spring device of a first modified example. FIG. [Figure 10] 5 is a plan view corresponding to FIG. 4 and showing a spring row, a rod, and a flat plate portion of a spring device of a second modified example. FIG. [Figure 11] FIG. 7 is an elevational view corresponding to FIG. 6, illustrating a coupling structure of a modified example. [Figure 12] FIG. 11 is a plan view of DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] <Embodiment> A spring device according to an embodiment of the present invention and a connection structure in which two buildings are connected by this spring device will be described. The push-pull direction is the X direction, indicated by the arrow X, and the longitudinal direction perpendicular to the push-pull direction, which will be described later, is the Y direction, indicated by the arrow Y. The push direction of the push-pull direction (X direction) is the +X direction, and the pull direction is the -X direction.

[0018] Furthermore, the direction perpendicular to the X and Y directions is the Z direction, and is indicated by the arrow Z. Note that this Z direction is the vertical direction in the spring device when two buildings are connected, as described below.

[0019] [Spring device] First, the spring device will be described.

[0020] 1 to 3, the spring device 100 has a device body 102 and a slide member 104. As shown in Fig. 1 and Fig. 3, the slide member 104 has a longer overall length in the Y direction than the device body 102.

[0021] As shown in FIG. 2, the device body 102 of the spring device 100 has a spring section 110, a box-shaped container 120 (see also FIG. 1), and a push-pull mechanism section 150.

[0022] As shown in FIG. 1, the outer shape of the box-shaped container 120 as viewed from the X direction is a rectangle with the Y direction as the longitudinal direction.

[0023] 2, the spring portion 110 is accommodated inside the accommodation body 120. The spring portion 110 is configured as a disc spring row 116 in which a disc spring group 114 made up of a plurality of stacked disc springs 112 is linearly arranged in the Y direction perpendicular to the expansion and contraction direction as shown in FIG.

[0024] 2, one end in the X direction (end in the +X direction) is formed with a rectangular one-end opening 122. The other end in the X direction (end in the -X direction) of the housing 120 is formed with a rectangular other-end opening 124 (see also FIG. 3), and the one-end opening 122 is provided with a rail-shaped slide member 104.

[0025] As shown in Figures 1 and 2, the slide member 104 is a rail-shaped member consisting of a T-shaped cross-sectional portion 191 composed of a flange portion 190 and a web portion 192, and a flat bottom portion 194 provided at the tip of the web portion 192.

[0026] 2, the slide member 104 is provided such that the web portion 192 is inserted into the one-end opening 122 and the one-end peripheral portion 123 of the one-end opening 122 is sandwiched between the flat bottom portion 194 and the flange portion 190. The flat bottom portion 194 forms the bottom of one end (the end in the +X direction) of the container 120.

[0027] A sliding material 189 made of a material such as fluororesin is applied to the wall surface of the portion of one end of the housing 120 where the sliding member 104 comes into contact. This sliding material 189 allows the sliding member 104 and the housing 120 to slide easily relative to each other in the Y direction, while preventing or suppressing rattling between them.

[0028] The push-pull mechanism 150 is a mechanism in which the piston 160 is pushed and pulled relative to the accommodating body 120, elastically deforming the disc spring row 116, and has a push-pull dual-acting mechanism 151 that compresses the disc spring row 116 in both the push and pull directions.

[0029] The push-pull dual-acting mechanism 151 has a tension member 152, the above-mentioned piston portion 160, a rod 154 (see also FIG. 3), and an engagement portion 170 provided on the piston portion 160.

[0030] The tension member 152 is a plate-shaped member provided between the flat bottom portion 194 of the slide member 104 and one end (the end in the +X direction) of the disc spring row 116. The tension member 152 has a length capable of pushing the entire spring row 116, in which the spring group 114 is aligned in the Y direction, in the -X direction.

[0031] The piston portion 160 has a T-shape made up of an insertion portion 162 (see also FIGS. 1 and 3) that is inserted into the other end opening 124 (see also FIG. 3), and an operation portion 164 that is wide in the Z direction and provided at the other end of the insertion portion 162. The insertion portion 162 is a member that is pushed in the +X direction from the other end opening 124 (see also FIG. 3) formed at the other end of the housing body 120, and compresses the disc spring row 116 in the +X direction.

[0032] 3, the insertion portion 162 has a length capable of pushing the entire spring row 116, in which the spring group 114 is aligned in the Y direction, in the +X direction. Note that in FIG. 3, the insertion portion 162 is shown by an imaginary line (two-dot chain line).

[0033] As shown in FIG. 2, the rod 154 is a rod-shaped member, one end 154A of which is connected to the tension member 152, and the other end 154B of which protrudes through the other end peripheral portion 125 of the other end opening 124 of the container 120 (see also FIG. 3).

[0034] 3 and 4, a plurality of rods 154 are disposed radially outside each of the disc springs 112 constituting the disc spring row 116, and position the disc spring group 114. In this embodiment, four rods 154 are provided for each disc spring group 114.

[0035] 2, the engagement portion 170 is a hole portion formed in the operation portion 164 of the piston portion 160 and inserted so as to be relatively movable in the push-pull direction (X direction). The engagement portion 170 is composed of a first hole portion 172 at one end side (+X direction side) and a second hole portion 174 larger than the first hole portion 172 at the other end side (-X direction side) of the first hole portion 172. From another perspective, the first hole portion 172 communicates with a bottom portion 174A of the second hole portion 174.

[0036] The other end 154B of the rod 154 is inserted into this engaging portion 170 so as to be relatively movable in the push-pull direction (X direction). When the piston portion 160 is pulled in the -X direction, the other end 154B of the rod 154 is expanded in diameter to form an expanded diameter portion 154C, which is an engaged portion, and the expanded diameter portion 154C comes into contact with and engages with the bottom portion 174A of the second hole portion 174.

[0037] (Push and pull action) Next, the pushing and pulling operation of the spring device 100 will be described with reference to Fig. 5. Specifically, the operation of the pushing and pulling mechanism 151 that compresses the disc spring row 116 in both the pushing and pulling directions will be described.

[0038] Push action 5(A), when the piston portion 160 is pressed in the +X direction, the insertion portion 162 of the piston portion 160 presses the disc spring row 116 in the +X direction, the disc spring row 116 presses the tension member 152 in the +X direction, and the tension member 152 is pressed against the flat bottom portion 194. As a result, the gap between the insertion portion 162 of the piston portion 160 and the tension member 152 becomes narrower, and each disc spring 112 of each disc spring group 114 of the disc spring row 116 is compressed. At this time, the other end portion 154B of the rod 154 moves within the second hole portion 174 of the engagement portion 170 toward the -X direction relative to the piston portion 160.

[0039] Pulling action As shown in Fig. 5(B), when the piston portion 160 is pulled in the -X direction, the enlarged diameter portion 154C of the other end portion 154B of the rod 154 abuts and engages with the bottom portion 174A of the second hole portion 174. As a result, the tension member 152 is pulled in the -X direction, and the tension member 152 moves in the -X direction (towards the other end opening 124) and presses the disc spring row 116, which is pressed against the other end peripheral portion 125 (see also Fig. 3). As a result, the gap between 162, the tension member 152, and the other end peripheral portion 125 becomes narrow, and each disc spring 112 of each disc spring group 114 of the disc spring row 116 is compressed.

[0040] [Connection structure] Next, a connection structure in which two buildings are connected by a spring device will be described.

[0041] 6, a first building 10 and a second building 20 supported in a seismic isolation manner are connected by a connecting structure 300. The main component of the connecting structure 300 in this embodiment is the spring device 100.

[0042] 6, the first building 10 and the second building 20 are constructed side by side along the X direction. A seismic isolation pit 32 for a seismic isolation foundation 30 is provided in the ground G, and a seismic isolation device 50 is installed in this seismic isolation pit.

[0043] The direction in which the first building 10 and the second building 20 move towards or away from each other is the X direction, and the sliding direction is the Y direction.

[0044] The seismic isolation device 50 is composed of an isolator 52 and a damper 54. The isolator 52 may be a laminated rubber bearing, a sliding bearing, a rolling bearing, etc. The damper 54 may be an oil damper, a steel damper, a lead damper, etc. The first building 10 and the second building 20 are supported by the isolator 52.

[0045] 7 and 8, the extended end 14 of the first foundation slab 12 of the first building 10 and the extended end 24 of the second foundation slab 22 of the second building 20 are connected by a spring device 100. The spring device 100 is arranged such that the X direction, which is the pushing / pulling direction, is aligned with the contact direction between the first building 10 and the second building 20, and as shown in Fig. 8, the Y direction, which is the longitudinal direction, is aligned along the horizontal direction perpendicular to the contact direction.

[0046] 7 and 8, in this embodiment, the piston portion 160 of the spring device 100 is joined to the end face 14A of the extension end 14 of the first foundation slab 12 of the first building 10, and the slide member 104 of the spring device 100 is joined to the end face 24A of the extension end 24 of the second foundation slab 22 of the second building 20. However, the piston portion 160 of the spring device 100 may be joined to the end face 24A of the extension end 24 of the second foundation slab 22 of the second building 20, and the slide member 104 of the spring device 100 may be joined to the end face 14A of the extension end 14 of the first foundation slab 12 of the first building 10.

[0047] 7 and 8, the portions of the end face 14A of the extended end portion 14 and the end face 24A of the extended end portion 24 to which the spring device 100 is attached are the attachment portion 14B and the attachment portion 24B. Any structure may be used for attaching the spring device 100 to the attachment portion 14B and the attachment portion 24B. For example, a connecting structure may be used in which bolt holes for attachment are provided in the piston portion 160 and the slide member 104 of the spring device 100, and a connecting member such as an H-shaped steel is fastened with a bolt, and the connecting member is fastened with a bolt to the end faces 14A and 24A.

[0048] As shown in Fig. 7, an expansion joint 25 is provided above a gap 19, which is a seismic isolation clearance between the extended end 14 of the first foundation slab 12 of the first building 10 and the extended end 24 of the second foundation slab 22 of the second building 20. Note that the expansion joint 25 is not shown in Fig. 8.

[0049] <Action and Effects> Next, the operation and effects of this embodiment will be described.

[0050] The spring device 100 includes a disc spring row 116 in which a disc spring group 114 composed of a plurality of stacked disc springs 112 is arranged in a straight line in a Y direction perpendicular to the X direction which is the expansion / contraction direction, a housing body 120 in which the disc spring row 116 is housed, and a push-pull dual-acting mechanism 151 which is pushed and pulled relative to the housing body 120 to compress the disc spring row 116 in both push and pull directions (both +X and -X directions).

[0051] Thus, a large spring force can be exerted without increasing the size of each disc spring 112. Therefore, compared to a cylindrical spring device, the area of ​​the mounting portion 14B of the end face 14A of the extension end 14 of the first foundation bottom plate 12 to which the spring device 100 is attached and the mounting portion 24B of the end face 24A of the extension end 24 of the second foundation bottom plate 22 can be secured to be large, and stress concentration at the mounting portions 14B, 24B is reduced. In other words, it becomes possible to receive a large load while suppressing and reducing stress concentration at the mounting portions 14B, 24B to which the spring device 100 is attached.

[0052] Furthermore, in the spring device 100, when the piston portion 160 is pushed in the +X direction, the insertion portion 162 of the piston portion 160 pushes the disc spring row 116, and the disc spring row 116 is compressed. Conversely, when the piston portion 160 is pulled in the -X direction, the enlarged diameter portion 154C of the other end portion 154B engages with the engagement portion 170 of the operation portion 164 of the piston portion 160, moving the tension member 152 toward the other end opening 124, and the disc spring row 116 comes into contact with the other end peripheral portion 125 of the other end opening 124, and is compressed. In this way, the disc spring row 116 is compressed in both pushing and pulling directions of the piston portion 160 (both +X and -X directions), and a spring force can be generated continuously.

[0053] Moreover, in the spring device 100, the rod 154 is disposed radially outward of the disc spring 112. Therefore, compared to a configuration in which the rod 154 is inserted into the central hole of the disc spring 112, the cross-sectional area of ​​the rod 154 and the diameter of the central hole of the disc spring 112 can be determined individually.

[0054] The spring device 100 also includes a spring section 110 composed of a spring row 116, a container 120 that contains the spring section 110, a push / pull mechanism section 150 that is pushed and pulled relative to the container 120 to elastically deform the spring section 110 in both push / pull directions (both +X and -X directions), and a slide member 104 that is slidable in the Y direction perpendicular to the X direction, which is the push / pull direction of the container.

[0055] Therefore, in the spring device 100, the spring row 116 elastically deforms in both the pushing and pulling directions, and the sliding member 104 provided in the housing 120 slides in the Y direction perpendicular to the X direction which is the pushing and pulling direction. Therefore, the spring device 100 can be provided between two members which come into contact with and separate from each other in the X direction and are relatively displaced in both directions in the Y direction (sliding direction) perpendicular to the coming and separating direction, in this embodiment, between the first building 10 and the second building 20.

[0056] Furthermore, by disposing the spring device 100 between the first building 10 and the second building 20, which are seismically isolated buildings, and attaching the piston portion 160 to the first building 10 side and the slide member 104 to the second building 20 side, it becomes possible to reduce the seismic isolation clearance (gap 19) in the X direction where the first building 10 and the second building 20 move toward and away from each other. It also becomes possible to reduce the building response of the first building 10 and the second building 20 during an earthquake.

[0057] In addition, in response to relative displacement in the horizontal Y direction perpendicular to the X direction in which the first building 10 and the second building 20, which are seismically isolated buildings, move toward and away from each other, the slide member 104 slides, thereby preventing or suppressing load on the spring device 100 (device body 102).

[0058] Here, a comparative spring device in which the container body is cylindrical will be considered.

[0059] When the housing is cylindrical, the disc springs are arranged in a circle, so that when the same number of disc springs are stored, the vertical width (Z direction width) is larger than that of the spring device 100 of this embodiment in which the disc springs are arranged in a straight line in a box-shaped housing. Therefore, in the spring device of the comparative example, the upper and lower ends protrude from the end faces 14A and 24A, so the mounting area is smaller, and as a result, stress concentration is large. Also, the details of the mounting structure to the mounting area are more complicated for a cylindrical housing than for a box-shaped housing. Furthermore, it is considered that the material cost of a cylindrical member is higher than that of a plate-shaped member. Therefore, the spring device 100 of this embodiment in which the disc springs 112 are arranged in a straight line is preferable.

[0060] [Modification of spring device] Next, modified examples of the spring device will be described. Note that a spring device 101 of a first modified example or a spring device 103 of a second modified example, which will be described later, may be used in the connecting structure 300 of the above embodiment.

[0061] (First Modification) 9, the rod 154 is provided at one location between the disc spring groups 114. This ensures a space between the rods 154, and as a result, the space between the engagement portion 170 formed by the first hole portion 172 and the second hole portion 174 can be increased.

[0062] (Second Modification) 10, the spring device 103 has a configuration in which the disk spring rows 116, in which the spring portions 210 are arranged in the longitudinal direction, are arranged in multiple rows in the Z direction, two rows in this modification. Note that the insertion portion 162, the tension member 252, and the flat bottom portion (not shown) are sized so that the entire spring portion 210 in which the disk spring rows 116 are arranged in two rows can be pushed and pulled.

[0063] [Modification of the connection structure] The modified connecting structure 302 in FIG. 11 and FIG.

[0064] An attachment portion 310 is provided on the lower portion of each of the extending end portion 14 of the first foundation slab 12 of the first building 10 and the extending end portion 24 of the second foundation slab 22 of the second building 20. The spring device 100 is attached to the attachment portion 310. The portion of the side surface 310A of the attachment portion 310 where the spring device 100 is attached is the attachment portion 310B.

[0065] As shown in Fig. 11, an expansion joint 27 is provided above the gap 21 between the extended end 14 of the first foundation slab 12 of the first building 10 and the extended end 24 of the second foundation slab 22 of the second building 20. Note that the expansion joint 27 is not shown in Fig. 12.

[0066] The X-direction width of the gap 21 shown in Figures 11 and 12 is narrower than the X-direction width of the spring device 100. In other words, the gap 21 in Figures 11 and 12 is narrower than the gap 19 in Figures 7 and 8. Therefore, the seismic isolation clearance (gap 19) in the X-direction where the first building 10 and the second building 20 move toward and away from each other is further reduced.

[0067] The spring device 100 may be provided across the entire width in the Y direction of the first foundation bottom slab 12 and the second foundation bottom slab 22. In this case, the spring device 100 may be long in the Y direction, or multiple spring devices 100 may be installed side by side in the Y direction. The spring device 100 may also have the function of an expansion joint.

[0068] The spring device 101 of the first modified example or the spring device 103 of the second modified example may be used in the connecting structure 302 of this modified example.

[0069] <Other> The present invention is not limited to the above embodiment.

[0070] For example, the spring devices 100, 101, 103 of the above-mentioned embodiment and modified examples are pushed and pulled relative to the housing 120, and the push-pull dual-acting mechanism 151 that compresses the disc spring row 116 in both push and pull directions (both +X and -X directions) is not limited to the mechanism of the above-mentioned embodiment. For example, the mechanism may be one disclosed in Japanese Patent Application Laid-Open No. 2012-163134 and Japanese Patent Application Laid-Open No. 2013-104438. Alternatively, the mechanism may be one disclosed on the website of Heiwa Hatsujo Co., Ltd.<https: / / www.hhk.co.jp / > The mechanism may be that disclosed in

[0071] In addition, for example, in the above embodiment and modified example, the disc spring row 116 is configured such that the disc spring group 114, in which a plurality of disc springs 112 are stacked, are arranged in the Y direction, but is not limited thereto. A single disc spring 112 may be arranged in the Y direction.

[0072] In addition, for example, in the above embodiment and modified example, the rod 154 is disposed radially outward of the disc spring 112, but is not limited to this. The rod 154 may be inserted into a center hole of the disc spring 112.

[0073] Also, for example, a cushioning material such as a disc spring may be provided between the tension member 152 and the flat bottom portion 194 in the housing 120. By providing a cushioning material in this manner, it is possible to absorb the impact force during compression and prevent or suppress damage caused by the impact force. Alternatively, an elastic member such as a disc spring may be provided between the tension member 152 and the flat bottom portion 194 in the housing 120. By providing an elastic member in this manner, it is possible to adjust the stiffness of the elastic member so that the spring stiffness of the tension side and the compression side are adjusted to be the same.

[0074] In addition, in the spring devices 100, 101, and 103 of the above-described embodiment and modified examples, the sliding member 104 is provided in the housing 120, but the present invention is not limited to this. A sliding member may be provided in the operation portion 164 of the piston portion 160.

[0075] Also, for example, in the above embodiment and modified example, the spring devices 100, 101, 103 are provided at the connection portion between the first building 10 and the second building 20, which are seismically isolated buildings, but this is not limited to this. The spring devices 100, 101, 103 may be provided between buildings other than seismically isolated buildings, or between members other than buildings. Also, multiple spring devices 100, 101, 103 may be provided. Furthermore, multiple spring devices may be provided in the Y direction. In short, it is sufficient that the spring devices 100, 101, 103 are provided between two members that move toward and away from each other.

[0076] In addition, for example, in the spring devices 100, 101, and 103 of the above-described embodiment and modified examples, the slide member 104 is provided, but the present invention is not limited to this. The slide member does not necessarily have to be provided.

[0077] Furthermore, the present invention can be embodied in various forms without departing from the spirit and scope of the present invention. A plurality of embodiments and modifications can be implemented in appropriate combination. [Explanation of symbols]

[0078] 100 Spring device 101 Spring device 103 Spring device 104 Slide member 110 Spring part 112 Disc spring 114 Disc Spring Group 116 Disc Spring Row 120 Containment Unit 124 Other end opening 125 Other end peripheral portion 150 Push-pull mechanism 151 Push-pull double-acting mechanism 152 Tensile members 154 Rod 154C Expanded diameter part (example of engaged part) 160 Piston section 170 Engagement part 194 Flat bottom (example of bottom) 252 Tensile members

Claims

1. A disc spring row in which a single disc spring is linearly arranged in a row direction perpendicular to the expansion / contraction direction, or a disc spring row in which a group of disc springs made up of a plurality of stacked disc springs is linearly arranged in a row direction perpendicular to the expansion / contraction direction; The disc springs are accommodated in one row or in a plurality of rows in a direction perpendicular to the row direction as viewed from the extension / contraction direction, and an opening of the rectangular container has a longitudinal direction in the row direction as viewed from the extension / contraction direction; a push-pull mechanism that is pushed and pulled relative to the housing and compresses the disc spring row in both the push and pull directions; Equipped with The piston portion constituting the push-pull dual-acting mechanism is An operation unit that is disposed on the outside of the container and has a width along the longitudinal direction of the container; a rectangular insertion portion that is provided in the operation portion and is inserted into the opening of the container to compress the disc spring row; having Spring device.

2. The push-pull dual-acting mechanism is a tension member provided between a bottom portion of one end of the housing and a rear end portion of the disc spring row; the insertion portion being pushed into the opening formed at the other end of the housing and compressing the disc spring row; a rod having one end connected to the tension member and the other end protruding from the housing; an engaging portion provided on the piston portion, into which the other end of the rod is inserted so as to be relatively movable in a push-pull direction, and which engages with the engaged portion of the rod when the piston portion is pulled, moves the tension member toward the opening, and compresses the disc spring row against the periphery of the opening; having The spring device of claim 1 .

3. The rods are arranged radially outwardly of each of the disc springs constituting the disc spring row, and position the disc springs. The spring device of claim 2.

4. A disc spring row in which a single disc spring or a plurality of stacked disc springs are linearly arranged in a direction perpendicular to the expansion and contraction direction; A housing in which the disc spring rows are housed in one or more rows; a push-pull mechanism that is pushed and pulled relative to the housing and compresses the disc spring row in both the push and pull directions; Equipped with The push-pull dual-acting mechanism is a tension member provided between a bottom portion of one end of the housing and a rear end portion of the disc spring row; a piston portion that is pushed into the housing through an opening formed at the other end thereof and compresses the disc spring row; a rod having one end connected to the tension member and the other end protruding from the housing; an engaging portion provided on the piston portion, into which the other end of the rod is inserted so as to be relatively movable in a push-pull direction, and which engages with the engaged portion of the rod when the piston portion is pulled, moves the tension member toward the opening, and compresses the disc spring row against the periphery of the opening; having The rods are arranged radially outwardly of each of the disc springs constituting the disc spring row, and position the disc springs. Spring device.

Images