TWI723121B - Slide support device - Google Patents

Abstract

A slide support device includes: a slide support main body that is disposed between a lower structural body and an upper structural body provided at an upper side of the lower structural body, and that is fixed to one of the upper structural body or the lower structural body; a first slide member that is provided at the slide support main body, and that has a slide surface relative to the other of the upper structural body or the lower structural body; and a holding member that is disposed between the slide support main body and the first slide member, that holds the first slide member, and that is provided with a through hole (a deformation allowing portion) that allows the first slide member to deform in a direction leading away from the other of the upper structural body or the lower structural body.

Description

Sliding support device

The invention relates to a sliding support device.

Japanese Patent Laid-Open No. 2001-59544 discloses an anti-vibration device composed of a first sliding element composed of a low-friction resin mainly composed of ethylene tetrafluoride resin and a second sliding element in contact with the ground freely sliding relative to the ground The sliding bearing. The first sliding component is provided with an opening on its upper surface and the first sliding surface that is the contact surface with the second sliding component, and has the same area as the opening and any cross section parallel to the first sliding surface. Bottom hole. Each bottomed hole is filled with a lubricant that maintains fluidity, and a lubricating film is formed on the contact surface by the seepage of the lubricant, thereby reducing the coefficient of friction.

In addition, Japanese Patent Application Laid-Open No. 2002-81496 discloses a sliding material in which a polytetrafluoroethylene (PTFE)-based resin is added with a fibrous additive in a sliding anti-vibration device. Furthermore, Japanese Patent Application Laid-Open No. 2003-253073 discloses an abrasion resistant resin composition in which crosslinked PTFE is mixed with a filler such as fibers and a polymer resin. In addition, Japanese Patent Application Laid-Open No. 2013-32484 discloses a resin composition containing fluororesin and polyester, a molded body formed from the resin composition, and a sliding component formed using the molded body.

However, as in the conventional example described in the above-mentioned Japanese Patent Application Publication No. 2001-59544, in order to provide a bottom hole in the first sliding component mainly composed of resin, it is necessary to use a dedicated mold or perform hole processing on the resin. . In addition, in the above-mentioned sliding support, although the first sliding member that bears the load of the building is deformed due to the vertical load, it must be Adjust the amount of lubricant used so that the lubricant does not decrease due to the deformation of the outer edge and cause friction to increase.

The present invention takes the above situation into consideration, and its object is to maintain the low friction properties of the first sliding member for a long period of time.

The sliding support device related to the present invention has: a sliding support body interposed between a lower structure and an upper structure arranged above the lower structure, and fixed to one of the upper structure and the lower structure The first sliding component is provided on the sliding support body and has a sliding surface relative to the other of the upper structure and the lower structure; and the holding component is interposed between the sliding support body and the The first sliding unit is held between the first sliding units, and a deformation allowing portion that allows the first sliding unit to deform in a direction away from the other of the upper structure and the lower structure is provided.

According to the related sliding support device of the present invention, it is possible to obtain an excellent effect of maintaining the low friction properties of the first sliding component for a long time.

10: Sliding support device

12: Sliding support body

14: The first sliding component

14A: Sliding surface

16: Keep components

16A: recess

18: Lower structure

20: Superstructure

22: layered body

24: The second sliding component

24A: Sliding surface

26: Upper mounting plate

28: Link plate

30: metal plate

34: Rubber

36: Coated rubber

38: dense bottom plate

40: Through hole

44: sunken

Fig. 1 is a cross-sectional view showing the sliding support device related to the first embodiment.

Fig. 2 is an enlarged cross-sectional view showing the main part of the sliding support device related to the first embodiment.

Fig. 3A is a front view showing a holding assembly provided with a through hole at one part of the central part.

Fig. 3B is a front view showing a holding assembly provided with through holes at a plurality of locations on the peripheral edge.

Fig. 4 is a linear graph showing the change of the friction repetition number and the friction coefficient related to Test Example 1.

Fig. 5 is a schematic diagram showing the sliding support device related to the second embodiment.

Fig. 6A shows an enlarged view of part A of Fig. 5.

Fig. 6B is an enlarged view showing a comparative example corresponding to part A of Fig. 5.

FIG. 7A is a diagram showing a pressure-sensitive paper that is sandwiched between the second sliding member and the first sliding member to be pressurized in the second embodiment.

FIG. 7B is a diagram showing the pressure sensitive paper sandwiched between the second sliding member and the first sliding member and being pressurized in the comparative example.

FIG. 8A is a graph showing the repeated friction characteristics of the second embodiment and the comparative example, and is a graph showing the comparison based on the slip friction coefficient of the first cycle.

FIG. 8B is a graph showing the repeated friction characteristics of the second embodiment and the comparative example, and is a graph showing a comparison based on the friction coefficient of the third cycle.

FIG. 9A is a graph showing the comparison of the friction coefficient ratio in the case where the sliding friction coefficient is 1 in the history curves of the second embodiment and the comparative example.

FIG. 9B is a graph showing the comparison of the friction coefficient in the history curves of the second embodiment and the comparative example.

Hereinafter, the modes for implementing the present invention will be described based on the drawings.

[First Implementation Type]

In FIG. 1, the sliding support device 10 related to this embodiment has a sliding support body 12, a first sliding assembly 14 and a holding assembly 16.

The sliding support body 12 is interposed between the lower structure 18 and the upper structure 20 arranged above the lower structure 18, and is fixed to one of the upper structure 20 and the lower structure 18, for example, the upper structure 20. The upper structure 20 is a supported body such as a building, a water tank, and a water storage tank. The lower structure 18 is a base part made of, for example, cement, and is installed on the ground (not shown in the figure).

The sliding support body 12 is formed by fixing the upper mounting plate 26 to the upper end of the laminated body 22 and fixing the connecting plate 28 to the lower end. The laminated body 22 is formed by alternately laminating a plurality of disc-shaped metal plates 30 and a plurality of disc-shaped rubbers 34 in its thickness direction. It has a cylindrical shape and is arranged at the center of the upper mounting plate 26. The metal plate 30 is, for example, a steel plate. The metal plate 30 and the rubber 34 are strongly integrated by vulcanization bonding. Thereby, the load in the vertical direction (arrow V direction) has a specific hardness, and the load in the horizontal direction (arrow H direction) has a spring function and a specific amount of deformation is ensured.

The upper mounting plate 26 and the connecting plate 28 are each composed of thick disc-shaped steel plates. The outer diameter of the upper mounting plate 26 is larger than the outer diameter of the sliding support body 12, and is fixed with respect to the upper structure 20 by, for example, bolts (not shown in the figure). The outer diameter of the connecting plate 28 is set to be equal to the outer diameter of the metal plate 30, and the covering rubber 36 is cylindrically arranged on the outer peripheries of the laminate 22 and the connecting plate 28. Since the outer edge of the metal plate 30 is covered by the covering rubber 36, the metal plate 30 and the connecting plate 28 will not be exposed to the outside, thereby preventing their deterioration.

In FIG. 1, the sliding support body 12 receives the load from the upper structure 20, so that the rubber 34 is slightly compressed and deformed, and the length in the vertical direction becomes shorter than that in the unloaded state. In this state, when the upper structure 20 moves relative to the lower structure 18 in the horizontal direction, the vibration energy of the relative movement will be partially absorbed due to the shear deformation of the sliding support body 12.

The first sliding element 14 is provided in the sliding support body 12 and is a low-friction element having a sliding surface 14A with respect to the other of the upper structure 20 and the lower structure 18. The material of the first sliding member 14 is, for example, a low-friction resin mainly composed of ethylene tetrafluoride resin. The first sliding unit 14 is provided on the lower end side of the sliding support body 12 through the holding unit 16, for example.

The material of the first sliding member 14 is, for example, any of the following (1) to (5). These are additives that can simultaneously improve the reduction of the friction coefficient and the mechanical strength of the first sliding component 14.

(1) Tetrafluoroethylene resin composition containing aromatic polyester or polyimide.

(2) Tetrafluoroethylene resin composition containing 5-30wt% of aromatic polyester.

(3) Tetrafluoroethylene resin composition containing 5-30wt% of polyimide.

(4) In any of the above (1) to 3), carbon fiber, graphite, glass fiber, One or more of molybdenum disulfide, potassium titanate, and bronze.

(5) In any of the above (1) to 3), one or more of carbon fiber, graphite, glass fiber, molybdenum disulfide, potassium titanate, and bronze are contained in an amount greater than 0 and less than 5-20 wt%.

In addition, in the above (4) and (5), from the viewpoint of friction characteristics, graphite and molybdenum disulfide are better than other materials.

The friction coefficient of the first sliding member 14 at a surface pressure of 20 MPa is, for example, 0.01 or less, and more preferably 0.08 or less. The compressive deformation of the first sliding member 14 at a surface pressure of 80 MPa is, for example, 40% or less, The first sliding member 14 is formed in, for example, a disc shape, and is fitted into the recess 16A of the holding member 16. Therefore, the outer diameter of the first sliding member 14 is smaller than the outer diameter of the holding member 16. In addition, the recessed portion 16A is formed to be shallower than the thickness of the first sliding member 14. Thereby, the first sliding component 14 will protrude below the holding component 16. The first sliding member 14 is fixed to the holding member 16 by, for example, bonding. In addition, the outer diameter of the first sliding member 14 is not limited to the case where it is smaller than the outer diameter of the holding member 16. The outer diameter of the first sliding member 14 may be approximately the same as the outer diameter of the holding member 16, or larger than the outer diameter of the holding member 16.的OD。

The holding assembly 16 is interposed between the sliding support body 12 and the first sliding assembly 14 to hold the first sliding assembly 14. The holding member 16 is made of metal, such as stainless steel, and is formed in a disc shape. The lower end of the holding unit 16 (the end on the side of the first sliding unit 14) is formed with a circular recess 16A into which the first sliding unit 14 is fitted. The holding component 16 is engaged with the connecting plate 28 in the horizontal direction through, for example, a key plate 38. In addition, the holding assembly 16 can also be locked to the connecting plate 28 by bolts or the like (not shown in the figure).

The holding member 16 is provided with a plurality of through holes 40 as deformation allowing portions that allow the first sliding member 14 to deform in a direction away from the upper structure 20 and the lower structure 18, for example, the lower structure 18. The through hole 40 is, for example, a circular hole.

In addition, as shown in FIG. 3A, the through hole 40 may be provided at a position corresponding to the center portion of the first sliding member 14 in the holding member 16. In addition, as shown in FIG. 3B, the through hole 40 may correspond to the circumference of the first sliding member 14 in the holding member 16 The positions of the edges are arranged at, for example, 8 locations (plural locations) along the circumferential direction of the holding assembly 16. When the through hole 40 is provided at one location, it is preferable that the diameter be larger than the case where a plurality of through holes 40 are provided.

The other of the upper structure 20 and the lower structure 18 is provided with a second sliding unit 24 having a sliding surface 24A with respect to the first sliding unit 14. Although the material of the second sliding member 24 is the same as that of the first sliding member 14, for example, stainless steel or the like may be used. As shown in FIG. 2, a lubricant 42 is arranged between the first sliding assembly 14 and the second sliding assembly 24. The lubricant 42 mainly stays in the recess 44 formed at the position of the through hole 40 and the second sliding component 24.

(effect)

This embodiment is constructed as described above, and its function will be described below. In FIG. 1, the sliding support device 10 related to this embodiment is fixed to one of the upper structure 20 and the lower structure 18, such as the upper structure 20, and is interposed between the upper structure 20 and the lower structure.体18 Among them. Then, the load acts on the lower structure 18 from the upper structure 20 through the sliding support body 12, and the first sliding member 14 held by the holding member 16 is compressed and loaded.

At this time, as shown in FIG. 2, since the through hole 40 of the holding member 16 is not in contact with the first sliding member 14, a part of the compressed first sliding member 14 is deformed as if it sinks into the through hole 40. Since the outer edge of the first sliding member 14 is fitted into the recessed portion 16A of the holding member 16, the first sliding member 14 is suppressed from spreading to the outside of the recessed portion 16A. Then, a part of the first sliding member 14 is also deformed like it sinks into the through hole 40 of the peripheral edge portion of the holding member 16.

As a result, the first sliding member 14 is deformed at the position of the through hole 40 in a direction away from the other of the upper structure 20 and the lower structure 18 (the lower structure 18 in this embodiment). As a result, a recess 44 in which the lubricant 42 can be retained is formed between the first sliding member 14 and the second sliding member 24 (the other of the lower structure 18). In the example shown in FIG. 1, since the through holes 40 are provided at multiple locations, the recesses 44 are also formed at the multiple locations. Since the recess 44 is compressed and loaded by the first sliding component 14, it is naturally formed in the corresponding penetration of the holding component 16 At the position of the perforation 40, there is no need to use a special mold for providing the recess 44 or to perform post-processing on the first sliding component 14.

In this embodiment, since the deformation allowable portion is the through hole 40, the deformation allowable portion can be easily provided during the forming of the first slide assembly 14. Moreover, even if the deformation allowable portion is provided by subsequent processing, the processing is also Easy. In addition, since the through hole 40 is a circular hole, the through hole 40 can be easily formed by drilling or the like.

In this embodiment, since the lubricant 42 will stay between the recess 44 formed by the first sliding component 14 and the second sliding component 24, the gap between the first sliding component 14 and the second sliding component 24 can be maintained for a long time. Low friction. When the upper structure 20 is moved due to an earthquake or the like, the first sliding member 14 slides with respect to the second sliding member 24, so that the horizontal acceleration acting on the upper structure 20 can be reduced. At this time, the lubricant 42 in the recess 44 is supplied between the sliding surface of the first sliding component 14 and the sliding surface of the second sliding component 24. Since the first sliding member 14 slides with respect to the second sliding member 24, the horizontal acceleration acting on the upper structure 20 can be reduced.

In addition, as shown in FIG. 3A, when the through hole 40 is provided in the center of the holding assembly 16, a recess 44 that allows the lubricant 42 to stay is formed in the center of the first sliding assembly 14. In addition, as shown in FIG. 3B, when the through holes 40 are provided in the plurality of positions of the holding member 16, the recesses 44 that can allow the lubricant 42 to stay are formed in the plurality of positions of the first sliding member 14.

In addition, in the sliding support device 10 related to this embodiment, although the first sliding assembly 14 is configured to slide with respect to the lower structure 18, the vertical direction may be reversed, so that the first sliding assembly 14 It is a structure that slides with respect to the upper structure 20.

The shape of the through hole 40 is not limited to a circular shape, but may be an ellipse, an oblong shape, a polygonal shape, or the like. In addition, the deformation allowable portion is not limited to the through hole 40, and may be a non-penetrating recess. The recess can be cylindrical, conical, grooved, etc.

The second sliding unit 24 may not be provided, and the other of the upper structure 20 and the lower structure 18 may be provided with a sliding surface with respect to the first sliding unit 14.

(Test Example 1)

For the case of using the holding component of the structure shown in FIG. 3A, the case of using the holding component of the structure shown in FIG. 3B, and the holding component without a through hole (not shown in the figure), the friction coefficient was investigated relative to the first sliding component for the first sliding component 2 The amount of change in the number of sliding repetitions of the sliding component.

In the holding assembly of the configuration shown in FIG. 3A, a through hole with a diameter of 8 mm is provided at one location in the center of the recess. In the holding assembly 16 configured as shown in FIG. 3B, through holes having a diameter of 2.8 mm are evenly provided at 8 locations on the peripheral edge of the recessed portion. The pitch diameter of the through hole is 80 mm.

The material of the first sliding component is a resin mainly composed of ethylene tetrafluoride resin, and the material of the second sliding component is SUS404. The dimensions of the first sliding component and the second sliding component are shown in Table 1. The amount of lubricant used is 2.5g. In addition, the test conditions are shown in Table 2 and Table 3. The test results are shown in Figure 4. It can be seen from Figure 4 that if the holding part is not provided with a through hole, the amount of change in the friction coefficient will increase as the number of repetitions increases, but if the holding part is provided with a through hole, even if the number of repetitions increases, the friction coefficient changes. The amount is still small. In particular, the case of the through hole with a diameter of 8 mm is smaller than the case of the through hole with a diameter of 2.8 mm. Therefore, the diameter of the through hole is 8mm better than the diameter of 2.8mm.

In addition, if the holding part is not provided with a through hole, the friction coefficient will increase as the number of repetitions increases, but if the holding part is provided with a through hole, even if the number of repetitions increases, the amount of change in the friction coefficient remains low .

(Test Example 2)

In Table 4 to Table 6, the difference in friction coefficient and compression deformation caused by the difference in the composition of the first holding component was tested. The common test conditions are as follows.

Base resin: polytetrafluoroethylene (tetrafluoroethylene resin, PTFE)

<Friction Test>

Testing machine: dynamic friction testing machine

Material of the second sliding component: SUS304

Surface pressure: 20MPa

Speed: 100mm/s

Amplitude: 200mm

<Compression Deformation>

Testing machine: compression testing machine

Surface pressure: 80MPa

Speed: 1.3mm/min

Test piece shape: diameter 30mm×thickness 5mm

The non-common test conditions are as follows.

Lubricant: Silicone oil

The target value of the friction coefficient is 0.01 or less. The target value of the compression deformation is 40% or less. The target value of the friction coefficient and the target value of the compression deformation are preferably satisfied at the same time. In addition, the amount of compression deformation is defined as ((d1-d2)/d1)×100 (%). Here, d1 is the thickness of the first holding member before the test, and d2 is the thickness of the first holding member after the test.

It can be seen from Table 4 and Table 5 that even if the material added to the first holding component is either aromatic polyester or polyimide, the friction coefficient can still be achieved at the same time when the addition ratio is 5 to 30 wt% And the target value of compression deformation. In addition, it can be seen from Table 6 that when the graphite addition amount is 20wt% or less, the friction coefficient and compression deformation target can be achieved. value.

[Second Implementation Type]

In Figure 5, the sliding support device 110 related to this embodiment is installed between the foundation formed by the ground and the building. It has the function of supporting the building on the foundation while suppressing the shaking of the building caused by earthquakes. .

The sliding support device 110 related to this embodiment is installed on the lower structure 112 as a foundation formed on the ground, at a position opposite to the upper structure 114 as a building installed on the upper part of the foundation. Also, the upper structure 114 and the lower structure The body 112 is configured to be relatively movable in a horizontal direction, and its moving range is restricted by, for example, a baffle (not shown in the figure).

The sliding support device 110 is provided with a second sliding assembly 116 fixed to the lower structure 112, and the second sliding assembly 116 is made of, for example, a stainless steel plate. The second sliding assembly 116 is composed of a flat plate. In addition, the shape of the second sliding member 116 is not particularly limited to a rectangular plate shape, a circular plate shape, or the like.

The upper surface of the second sliding assembly 116 constitutes a sliding surface 118. The sliding surface 118 may be composed of the surface of the stainless steel constituting the second sliding element 116, or may be composed of a laminated structure in which a resin agent or the like is laminated on the surface of the stainless steel. As shown in FIG. 6A and FIG. 6B, the sliding surface 118 is coated with a lubricant useful to reduce the coefficient of friction to form a lubricating film 120.

In addition, in this embodiment, although the case where the lubricating film 120 is formed on the sliding surface 118 of the second sliding element 116 by the application of the lubricant is described, it is not limited to this. For example, the second sliding component 116 or the first sliding component 122 described later may be provided with a bottom hole, and the lubricant may be filled and held in the bottom hole, whereby the leaked lubricant will slide on the second The sliding surface 118 of the component 116 forms the structure of the lubricating film 120.

The upper part of the second sliding assembly 116 is provided with a first sliding assembly 122. The first sliding assembly 122 is not fixed to the second sliding assembly 116, the second sliding assembly 116 is provided on the side of the lower structure 112, and the component including the upper part of the first sliding assembly 122 is provided on the upper structure 114 sides. In addition, regarding the first sliding member 122, the material, the coefficient of friction at a surface pressure of 20 MPa, and the amount of compression deformation at a surface pressure of 80 MPa are the same as those of the first sliding member 14 of the first embodiment.

Although the lubricating film 120 is interposed between the first sliding component 122 and the second sliding component 116, due to the vertical load applied to the first sliding component 122, a thinner area or part of the lubricating film 120 is formed in the first sliding component 122. There is no area where the lubricating film 120 exists. The first sliding element 122 is composed of a low-friction resin mainly composed of ethylene tetrafluoride resin. With its material and lubricating film 120, it can be directed along the sliding surface 118 of the second sliding element 116. slide. Thus, the first sliding component 122 can be put in other words as an example Such as low-friction resin or low-friction components or friction-reducing components.

The first sliding component 122 is also composed of a flat plate. Although the shape of the first sliding member 122 is not particularly limited to a rectangular plate shape or a circular plate shape, etc., in order to easily move in all directions along the plane of the second sliding member 116, it is preferably a circular plate shape. In addition, since the first sliding member 122 can slide relative to the second sliding member 116, its area is configured to be smaller than the area of the second sliding member 116.

The upper part of the first sliding assembly 122 is provided with a holding assembly 130. Although the holding member 130 is formed of metal, it may also be formed of other materials such as synthetic resin. The holding member 130 is formed in a shape corresponding to the first sliding member 122. The lower surface of the holding assembly 130 is recessed with an embedded part 130A.

The inlaid portion 130A is formed into a cylindrical recess shape capable of accommodating the upper portion of the first sliding member 122 with a relatively low height, and is configured to be capable of accommodating the first sliding member 122. In addition, the depth dimension of the recessed embedded portion 130A is set to a value smaller than the thickness dimension of the first sliding component 122. In a state where the upper surface or the upper side of the first sliding member 122 is closely attached to the inner fitting portion 130A, the lower surface of the first sliding member 122 can be configured to protrude from the inner fitting portion 130A and be held in Keep assembly 130.

In this way, the holding component 130 can be in other words, for example, a supporting tool or an installation component. In addition, in this specification, the state in which the opposing parts are housed in a state where they are in close contact with each other is referred to as an inlay.

The outer side of the embedded portion 130A is also shown in FIG. 6A and FIG. 6B, and the extension portion 130B is formed by the side wall surface of the holding component 130. The extended portion 130B extends along the side 122A of the first slide component 122 and covers the outer peripheral portion of the first slide component in a state where the first slide component 122 is housed in the embedded portion 130A. Out of the location. In addition, in this specification, the extended state is referred to as extended out.

The extended portion 130B extends to the center portion in the thickness direction of the first sliding member 122, and the side surface 122A of the first sliding member 122 is surrounded all around with the extended portion 130B in close contact. Thereby, it is configured to prevent the first sliding element 122 from being separated from the holding element 130 when the holding element 130 moves horizontally.

In addition, in this embodiment, although the extension part 130B is used to connect the first sliding group The case where the entire circumference of the side 122A of the member 122 is surrounded is described as an example, but the holding mechanism is not limited to this. For example, extensions 130B that are plural protruding portions may be provided on the outer edge of the holding assembly 130 at specific intervals in the circumferential direction, by extending the extensions 130B toward the side surface 122A of the first sliding assembly 122 Then, the peripheral edge of the first sliding assembly 122 is partially held at an interval.

In addition, in this embodiment, although the case where the extended portion 130B surrounds and holds the side surface 122A of the first sliding member 122 is taken as an example for description, it is not limited to this. For example, it may be a holding structure in which the first sliding member 122 is attached to and held below the holding member 130. Alternatively, it may be a holding structure in which a dense bottom plate is embedded in a recess provided on the facing surface of the holding assembly 130 and the first sliding assembly 122 to connect or hold the holding assembly 130 and the first sliding assembly 122.

The outer edge portion of the top surface 130C of the inlay portion 130A of the holding assembly 130 is formed with a recess 132 that retreats upward. The recessed portion 132 extends over the entire circumference of the outer edge of the top surface 130C. As shown in FIGS. 6A and 6B, the recessed portion 132 constitutes a groove with a rectangular cross-section extending along the inner side of the extended portion 130B.

Thereby, the concave portion 132 is provided in a position corresponding to the upper surface of the outer edge portion 122B of the first sliding component 122 in the state where the first sliding component 122 is housed in the holding component 130. In addition, when the first sliding element 122 is deformed, the outer edge 122B of the first sliding element 122 can be deformed in a direction away from the sliding surface 118 of the second sliding element 116 (that is, upward), and the concave portion 132 is constituted with a deformation allowable portion that can allow its deformation.

Then, in the holding component 130, a region more inside than the concave portion 132 in the top surface 130C of the embedded portion 130A is in surface contact with the first sliding component 122. Thereby, it is configured that the vertical load applied from the holding unit 130 to the first sliding unit 122 is transmitted from the surface contact portion. The transmission of the load of the first sliding member 122 is configured to be transmitted by contacting the center portion of the top surface 130C from the surface. A transmission structure is formed that can transmit the load of the upper structure 114 from the center portion located further inside than the outer edge portion 122B of the first sliding member 122.

With this, the deformation allowable portion can be in other words, for example, a deformation allowable structure or pressure Suppress the structure. In addition, the deformation allowable portion is constituted by the recessed portion 132 receding upward at the top surface 130C of the inlay portion 130A, and therefore has a step with respect to the top surface 130C. Thus, the deformation allowable portion can be put in other words as the step portion.

In addition, although the case where the cross-sectional shape of the recessed part 132 which comprises this deformation|transformation allowance part is formed in a rectangle is demonstrated as an example, it is not limited to this. For example, the cross-sectional shape may be other shapes such as a semicircle or a triangle.

In addition, when the first sliding member 122 is attached and held to the holding member 130, it is also possible that the part of the holding member 130 facing the outer edge portion 122B of the first sliding member 122 is missing from the side. The deformation allowable portion of the extension portion 130B is omitted. In addition, it can also be configured that the outer dimension of the holding assembly 130 is smaller than that of the first sliding assembly 122, so that the outer edge 122B of the first sliding assembly 122 can be deformed in a direction away from the sliding surface 118 of the second sliding assembly 116. Form a deformation allowable portion. In addition, these deformation allowable portions also constitute a transmission structure for transmitting the load of the upper structure 114 from the center portion located further inside than the outer edge portion 122B of the first sliding member 122.

Furthermore, the concave portion 132 constituting the deformation allowing portion is a space that allows the outer edge portion 122B of the first sliding element 122 to be deformed in a direction away from the sliding surface 118 of the second sliding element 116. Then, the recessed portion 132 constituting the deformation allowable portion does not have to be formed continuously over the entire circumference of the holding member 130, and may be partially formed intermittently.

As shown in FIG. 5, the upper part of the holding assembly 130 is provided with an elastic support body 136, and the elastic support body 136 is formed in a cylindrical shape. The lower part of the elastic support body 136 is provided with a thick disc-shaped connecting steel plate 138, and the connecting steel plate 138 is arranged on the holding assembly 130. The lower hole 138A of the connecting steel plate 138 is embedded with the upper end of the dense bottom plate 140, and the lower end of the dense bottom plate 140 is embedded in the upper hole 130D of the holding assembly 130. Thereby, the connecting steel plate 138 of the elastic support body 136 will be prevented from lateral deviation in the state of being connected to the holding assembly 130, so that the elastic support body 136 and the holding assembly 130 are combined.

A plurality of disc-shaped rubber layers 142 and disc-shaped metal plates 144 are alternately laminated on the upper part of the connecting steel plate 138, and the rubber layer 142 is provided on the uppermost part. The connecting steel plate 138, the metal plate 144 and the rubber layer 142 are composed of rubber forming the rubber layer 142 The front end of the rubber peripheral wall 146 is joined to the peripheral surface of the holding assembly 130. In this way, the entire surface of the elastic support body 136 will be covered by the rubber and the holding component 130 to ensure water tightness.

The connecting steel plate 138 and the metal plate 144, the rubber layer 142 and the rubber peripheral wall 146 are firmly fixed by vulcanization and then to form a laminated structure in which the connecting steel plate 138, the metal plate 144 and the rubber layer 142 are integrated. In this way, the load in the vertical direction will have a specific hardness. In addition, with respect to the load in the horizontal direction, the system is configured to perform a spring function while ensuring a specific amount of deformation. As a result, it will be constructed such that it can still absorb the energy of the elastic support body 136 through the deformation of the elastic support body 136 with respect to small shaking.

A mounting plate 150 is fixed to the upper part of the elastic support body 136. The part outside the figure of the mounting plate 150 is fixed to the upper structure 114 with bolts. Thereby, the upper structure 114 side is provided with an elastic support body 136, a holding member 130 fixed to the lower part of the elastic support body 136, and a first sliding member 122 held by the holding member 130.

(effect)

Next, the effect of this embodiment is explained. In the present embodiment related to the above configuration, the holding member 130 is formed by the recess 132 with a deformation allowing portion capable of allowing the outer edge portion 122B of the first sliding member 122 to deform in a direction away from the sliding surface 118. Then, as shown in FIG. 6A, for example, the vertical load from the upper structure 114 is transmitted to the center of the first sliding member 122. When the first sliding member 122 is deformed, the outer edge 122B of the first sliding member 122 will move away from the sliding surface. Deformed above 118.

Therefore, when the lower structure 112 and the upper structure 114 are relatively moved in the horizontal direction, there will be no such a comparative example in which the recess 132 is not formed on the top surface 130C of the embedded portion 130A of the holding assembly 130 as shown in FIG. 6B , The outer edge portion 122B of the first sliding element 122 may be deformed like a sink toward the sliding surface 118 side to form an acute-angled edge 122C. Thereby, compared to the comparative example where the edge 122C is formed, the edge 122C pushes the lubricant on the outer periphery of the first sliding element 122 out of the moving range of the first sliding element 122, and the first sliding element 122 can be maintained. The lubricant at the return position of the sliding component 122.

Thereby, the lubricating film 120 maintained when the first sliding component 122 returns to a specific position can be reused. Therefore, as shown in FIG. 6A, even if the first sliding member 122 is slid, it is possible to suppress the reduction of the usable lubricant.

Therefore, it is possible to maintain the lubricating film 120 with a specific thickness and suppress the increase in the friction coefficient without paying attention to the selection of the style or type of the lubricant, or to increase the retention amount of the lubricant. Thereby, the friction coefficient of the first sliding element 122 can be stabilized, and the repeatability during sliding can be improved.

In addition, the outer edge 122B of the first sliding element 122 is deformed in a direction away from the sliding surface 118 as shown in FIG. 6A. Therefore, the first sliding element 122 may also be at the outer edge portion 122B of the first sliding element 122, and the lower surface on the sliding surface 118 side may deform upwardly away from the sliding surface 118, so that the outer edge portion of the first sliding element 122 The closer 122B is to the outer edge, the more it deforms upward and becomes the deformed portion 122D.

In the above-mentioned case, since the corners can be rounded, the gap formed between the deformed portion 122D and the sliding surface 118 can promote the lubricant to enter between the first sliding component 122 and the sliding surface 118. Therefore, it is possible to suppress an increase in the coefficient of friction between the first sliding member 122 and the sliding surface 118.

Furthermore, the holding assembly 130 is provided with an extension portion 130B extending along the side 122A of the first sliding assembly 122. Therefore, when the lower structure 112 and the upper structure 114 relatively move in the horizontal direction to move the first sliding member 122 horizontally with respect to the sliding surface 118, the extended portion 130B can be brought into contact with the first sliding member 122 on the side. As a result, since the extended portion 130B can support the first sliding element 122 from the side, the holding force of the holding element 130 to the first sliding element 122 during sliding can be improved.

7A and 7B show the sliding support device 110 related to this embodiment and the comparative example, when the pressure-sensitive paper is clamped between the second sliding component 116 and the first sliding component 122, and the pressure is applied at 20 MPa Schema of experimental results. FIG. 7A shows the pressure-sensitive paper used in this embodiment in which the holding component 130 is provided with a recess 132, and FIG. 7B shows the pressure-sensitive paper used in a comparative example in which the holding component 130 is not provided with the recess 132.

From this experimental result, in the comparative example of Fig. 7B, the outer peripheral portion 200 of the pressure-sensitive paper is It can be confirmed that the outer peripheral portion of the first sliding member 122 has a high pressure due to the portion with a darker color. The outer edge 122B of the first sliding member 122 is deformed toward the sliding surface 118 to form an acute-angled edge 122C.

In contrast, in the present embodiment of FIG. 7A, the outer peripheral portion 210 of the pressure-sensitive paper is a lightly colored portion. It can be seen that the outer peripheral portion of the first sliding member 122 has a lower pressure, and the first sliding member 122 The outer edge 122B is deformed in a direction away from the sliding surface 118.

8A and 8B are diagrams showing the repeated friction characteristics of the sliding support device 110 related to this embodiment and the comparative example. This embodiment is used when the holding assembly 130 is provided with a recess 132. The comparative example is used in the case where the holding component 130 is not provided with the recess 132.

FIG. 8A is a graph showing a comparison based on the sliding friction coefficient of the first cycle when the first sliding member 122 is moved in the horizontal direction with respect to the second sliding member 116. As shown in FIG. From the experimental results, it can be seen that in the comparative example, the friction coefficient increases when the number of repetitions exceeds a specific value, but in this embodiment, the friction coefficient does not increase even if the number of repetitions increases.

FIG. 8B is a graph showing a comparison based on the friction coefficient of the third cycle when the first sliding member 122 is moved in the horizontal direction with respect to the second sliding member 116. As shown in FIG. From the experimental results, it can be seen that in the comparative example, the friction coefficient increases when the number of repetitions exceeds a specific value, but in this embodiment, the friction coefficient does not increase even if the number of repetitions increases.

9 is a diagram showing the history curve (1 cycle) of the sliding support device 110 related to this embodiment and the comparative example. In this embodiment, the holding assembly 130 is provided with a recess 132. As a comparative example, The use holding assembly 130 is not provided with the recess 132.

9A shows a comparison of the friction coefficient ratio when the sliding friction coefficient is set to 1, and shows the friction coefficient ratio when the first sliding member 122 is moved in the horizontal direction with respect to the second sliding member 116. In FIG. 9A, the horizontal axis represents the horizontal displacement, and the vertical axis represents the friction coefficient ratio when the slip-out friction coefficient is 1.

From the experimental results, it can be seen that in the comparative example, relative to the horizontal movement position, the friction The friction coefficient ratio changes greatly, and the friction coefficient is unstable. In contrast to this, it can be seen that in this embodiment, the friction coefficient ratio changes less with respect to the moving position in the horizontal direction, and the friction coefficient is relatively stable.

9B is a graph showing the comparison of the history curves (1 cycle), and shows the amount of friction coefficient change when the first sliding member 122 is moved in the horizontal direction with respect to the second sliding member 116. In FIG. 9B, the horizontal axis represents the horizontal displacement, and the vertical axis represents the friction coefficient.

From the results of the experiment, it can be seen that in the comparative example, the friction coefficient ratio changes greatly with respect to the horizontal movement position, and the friction coefficient is unstable. In contrast to this, it can be seen that in this embodiment, the friction coefficient ratio changes less with respect to the moving position in the horizontal direction, and the friction coefficient is relatively stable.

From the above experimental results, it can be found that the repeatability of the sliding support device 110 of the present embodiment is higher than that of the comparative example, and the stability of the history characteristics can be achieved, thereby obtaining the effect of low friction.

In addition, in this embodiment, although the case where the holding member 130 is provided on the upper structure 114 side and the sliding surface 118 is provided on the lower structure 112 side has been described, it is not limited to this. The sliding surface 118 may be provided on the upper structure 114 side, and the holding assembly 130 may be provided on the lower structure 112 side.

Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above-mentioned embodiments. In addition to the above-mentioned embodiments, of course, various modifications can be made without departing from the spirit of the invention. Implement it. In addition, it is also possible to appropriately combine the configurations described in the above-mentioned embodiments.

This specification refers to the disclosures of Japanese Patent Application No. 2016-8928 filed on January 20, 2016, and Japanese Patent Application No. 2016-55906 filed on March 18, 2016, and is hereby incorporated as a whole.

All the documents, patent applications, and technical specifications cited in this specification by reference are to the same degree as each document, patent application, and technical specifications are specifically and individually described.

10‧‧‧Sliding support device

12‧‧‧Sliding support body

14‧‧‧The first sliding assembly

14A‧‧‧Sliding surface

16‧‧‧Keep the components

16A‧‧‧Concave

18‧‧‧Lower structure

20‧‧‧Superstructure

22‧‧‧Laminated body

24‧‧‧Second sliding assembly

24A‧‧‧Sliding surface

26‧‧‧Upper mounting plate

28‧‧‧Link plate

30‧‧‧Metal plate

34‧‧‧Rubber

36‧‧‧Coated rubber

38‧‧‧Dense bottom plate

40‧‧‧through hole

44‧‧‧Sag

Claims (16)

A sliding support device comprising: a sliding support body interposed between a lower structure and an upper structure arranged above the lower structure, and fixed to one of the upper structure and the lower structure The first sliding component is disposed on the sliding support body and has a sliding surface relative to the other of the upper structure and the lower structure; and the holding component is interposed between the sliding support body and the first 1 between the sliding components to hold the first sliding component, and is provided with a space that allows the first sliding component to deform in a direction away from the other of the upper structure and the lower structure. unit. Such as the sliding support device of the first item in the scope of patent application, wherein the deformation allowable part is a through hole. Such as the sliding support device of the second item of the scope of patent application, wherein the through hole is a circular hole. For example, the sliding support device of item 2 or 3 of the scope of patent application, wherein the through hole is formed at a position corresponding to the center of the first sliding component. For example, the sliding support device of item 2 or 3 of the scope of patent application, wherein the through hole is formed at a plurality of positions. For example, the sliding support device of any one of items 1 to 3 in the scope of the patent application, wherein the other of the upper structure and the lower structure is provided with a second sliding member having a sliding surface relative to the first sliding component Components; the first sliding component and the second sliding component are arranged between the lubricant. A sliding support device, comprising: a holding assembly, which is provided at any one of an upper structure and a lower structure opposed to each other and relatively movable in a horizontal direction; a first sliding assembly, which is held by the holding assembly, And slide along the sliding surface provided on the other of the upper structure and the lower structure; and the deformation allowable portion is provided on any of the upper structure and the lower structure One, the outer edge of the first sliding element is allowed to deform in a direction away from the sliding surface; the retaining element is formed with a recessed portion corresponding to the outer edge of the first sliding element to constitute the deformation allowing portion. For example, the sliding support device of item 7 of the scope of patent application, wherein the holding component has an extension part extending to the side surface of the first sliding component. A sliding support device is provided with: a second sliding component, which is arranged on the side of a lower structure and has a sliding surface; a first sliding component, which is slid on the second sliding component; and a holding component, which is attached from the upper structure Side to hold the first sliding assembly, and allow the first sliding assembly to deform in a direction away from the lower structure, and a space for deformation allowing part is provided corresponding to the outer edge of the first sliding assembly. The load of the upper structure is transmitted to the central part more than the outer edge part of the first sliding unit. For example, the sliding support device of any one of items 1 to 3 and 7 to 9 in the scope of patent application, wherein the first sliding component is a tetrafluoroethylene resin composition containing aromatic polyester or polyimide. For example, the sliding support device of items 1 to 3 and 7 to 9 in the scope of patent application, wherein the first sliding component is a tetrafluoroethylene resin composition containing 5-30 wt% of aromatic polyester. For example, the sliding support device of items 1 to 3 and 7 to 9 in the scope of patent application, wherein the first sliding component is a tetrafluoroethylene resin composition containing 5 to 30 wt% of polyimide. For example, the sliding support device of item 10 of the scope of patent application, wherein the first sliding component further contains at least one of carbon fiber, graphite, glass fiber, molybdenum disulfide, potassium titanate, and bronze. For example, the sliding support device of item 10 of the scope of patent application, wherein the first sliding component further contains more than 0 and less than 20wt% of carbon fiber, graphite, glass fiber, molybdenum disulfide, potassium titanate, and bronze. For example, the sliding support device of item 10 of the scope of patent application, wherein the friction coefficient of the first sliding component when the surface pressure is 20 MPa is less than 0.01. For example, the sliding support device of item 10 in the scope of patent application, wherein the compression deformation of the first sliding component when the surface pressure is 80 MPa is less than 40%.

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