TW201730448A - 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 bearing device

The invention relates to a sliding support device.

Japanese Laid-Open Patent Publication No. 2001-59544 discloses a vibration-proof device in which a first sliding unit composed of a low-friction resin containing a tetrafluoroethylene resin as a main component and a second sliding unit are relatively slidably in contact with each other. Sliding support. The first sliding unit is provided with an opening on the upper surface of the first sliding surface of the contact surface with the second sliding unit, and a plurality of the same area as the opening and the arbitrary cross section parallel to the first sliding surface. Bottom hole. Each of the bottomed holes is filled with a lubricant having fluidity, and a lubricant film is formed on the contact surface by the bleeding of the lubricant, thereby reducing the friction coefficient.

Japanese Laid-Open Patent Publication No. 2002-81496 discloses a sliding material in which a fibrous additive is added to a polytetrafluoroethylene (PTFE) resin in a sliding vibration isolating device. Further, Japanese Laid-Open Patent Publication No. 2003-253073 discloses a wear-resistant resin composition in which a filler such as a fiber and a polymer resin are mixed with a crosslinked PTFE. Japanese Laid-Open Patent Publication No. 2013-32484 discloses a resin composition containing a fluororesin and a polyester, a molded body formed of the resin composition, and a sliding member formed using the molded body.

However, as in the conventional example described in Japanese Laid-Open Patent Publication No. 2001-59544, in order to provide a bottom hole for the first sliding member mainly composed of a resin, it is necessary to use a dedicated mold or hole processing of the resin. . Further, in the above-described sliding support, the first sliding unit that receives the load of the building is deformed by the vertical load, but it is necessary to The amount of the lubricant used is adjusted so that the lubricant is not reduced by the deformation portion of the outer edge, and the friction is increased.

The present invention has been made in view of the above circumstances, and its object is to maintain the low frictional property of the first sliding unit for a long period of time.

A sliding support device according to the present invention includes: a sliding support body interposed between the lower structure body and the upper structure body disposed above the lower structure body, and is fixed to one of the upper structure body and the lower structure body The first sliding assembly is disposed on the sliding support body and has a sliding surface with respect to the other of the upper structure and the lower structure; and a holding assembly is disposed on the sliding support body and the The first slide unit is held between the first slide units, and a deformation permitting portion that allows the first slide unit to be deformed in a direction away from the other of the upper structure and the lower structure is provided.

According to the slide supporting device of the present invention, it is possible to obtain an excellent effect of maintaining the low friction of the first sliding unit for a long period of time.

10‧‧‧Sliding bearing device

12‧‧‧Sliding support body

14‧‧‧1st sliding assembly

14A‧‧‧Sliding surface

16‧‧‧Retaining components

16A‧‧‧ recess

18‧‧‧Lower structure

20‧‧‧Upper structure

22‧‧‧Layered

24‧‧‧2nd sliding assembly

24A‧‧‧Sliding surface

26‧‧‧Upper mounting plate

28‧‧‧Link board

30‧‧‧Metal plates

34‧‧‧ rubber

36‧‧‧coated rubber

38‧‧ ‧ dense bottom plate

40‧‧‧through holes

44‧‧‧ dent

Fig. 1 is a cross-sectional view showing a slide supporting device according to a first embodiment.

Fig. 2 is an enlarged cross-sectional view showing the main part of the slide supporting device according to the first embodiment.

Fig. 3A is a front view showing a holding member provided with a through hole at one portion of the center portion.

Fig. 3B is a front view showing the holding member provided with a through hole at a plurality of portions of the peripheral portion.

Fig. 4 is a linear graph showing changes in the number of friction repetitions and the coefficient of friction associated with Test Example 1.

Fig. 5 is a schematic view showing a slide supporting device according to a second embodiment.

Fig. 6A is an enlarged view showing a portion A of Fig. 5.

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

Fig. 7A is a view showing a pressure sensitive paper which is pressed between the second slide unit and the first slide unit in the second embodiment.

Fig. 7B is a view showing a pressure sensitive paper which is pressed between the second slide unit and the first slide unit in the comparative example.

Fig. 8A is a view showing the repeated friction characteristics of the second embodiment and the comparative example, showing a comparison of the slip friction coefficient of the first cycle as a reference.

Fig. 8B is a view showing the repeated friction characteristics of the second embodiment and the comparative example, showing a comparison of the friction coefficient of the third cycle as a reference.

Fig. 9A is a view showing a comparison of friction coefficient ratios when the slip friction coefficient is 1 in the history curve of the second embodiment and the comparative example.

Fig. 9B is a view showing a comparison of friction coefficients in the history curves of the second embodiment and the comparative example.

Hereinafter, the form for carrying out the invention will be described based on the drawings.

[First embodiment]

In Fig. 1, a sliding support device 10 according to this embodiment has a slide support body 12, a first slide assembly 14, and a holding assembly 16.

The slide support body 12 is interposed between the lower structure 18 and the upper upper structure 20 disposed on the lower structure 18, and is fixed to one of the upper structure 20 and the lower structure 18, for example, an upper structure. 20. The superstructure 20 is a supported body such as a building, a water tank, or a water storage tank. The lower structure 18 is a base portion made of, for example, cement or the like, and is provided on the floor (not shown).

The slide supporting body 12 is configured 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 laminate 22 is formed by laminating a plurality of disk-shaped metal plates 30 and a plurality of disk-shaped rubbers 34 alternately in the thickness direction thereof. It is cylindrical and is disposed 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. Thereby, the load with respect to the vertical direction (the direction of the arrow V) has a specific hardness, and the load with respect to the horizontal direction (the direction of the arrow H) can exert a spring function and secure a specific amount of deformation.

The upper mounting plate 26 and the connecting plate 28 are each formed of a thick disk-shaped steel plate. The outer diameter of the upper mounting plate 26 is larger than the outer diameter of the sliding support body 12, and is locked with respect to the upper structural body 20 by, for example, a bolt (not shown). 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 disposed in a cylindrical shape on the outer periphery of the laminated body 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 are not exposed to the outside, and are prevented from being deteriorated.

In Fig. 1, the sliding support body 12 is subjected to 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 in the no-load state. In this state, when the upper structure body 20 relatively moves in the horizontal direction with respect to the lower structure body 18, the vibration energy of the relative movement is absorbed by the shear deformation of the slide support body 12.

The first slide unit 14 is provided on the slide support body 12 and is a low friction unit 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 slide unit 14 is a low friction resin containing, for example, a tetrafluoroethylene resin as a main component. The first slide unit 14 is provided on the lower end side of the slide support body 12, for example, through the holding unit 16.

The material of the first slide unit 14 is, for example, any one of the following (1) to (5). These are materials which can simultaneously improve the friction coefficient reduction and mechanical strength of the first slide unit 14.

(1) A tetrafluoroethylene resin composition containing an aromatic polyester or a polyimide.

(2) A tetrafluoroethylene resin composition containing 5 to 30% by weight of an aromatic polyester.

(3) A tetrafluoroethylene resin composition containing 5 to 30% by weight of polyimine.

(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 one of the above (1) to 3), one or more of carbon fibers, graphite, glass fibers, molybdenum disulfide, potassium titanate, and bronze, which are more than 0 and 5 to 20% by weight or less, are further contained.

Further, in the above (4) and (5), from the viewpoint of friction characteristics, graphite and molybdenum disulfide are more preferable than other materials.

The friction coefficient of the first slide unit 14 at a surface pressure of 20 MPa is, for example, 0.01 or less, and more preferably 0.08 or less. The amount of compressive deformation of the first slide unit 14 when the surface pressure is 80 MPa is, for example, 40% or less. The first slide unit 14 is formed, for example, in a disk shape, and is fitted into the recess 16A of the holding unit 16. Therefore, the outer diameter of the first slide assembly 14 may be smaller than the outer diameter of the retaining assembly 16. Further, the recess 16A is formed to be shallower than the thickness of the first slide unit 14. Thereby, the first sliding assembly 14 protrudes below the holding assembly 16. The first slide assembly 14 is fixed to the holding assembly 16 by, for example, being attached. Moreover, the outer diameter of the first sliding assembly 14 is not limited to be smaller than the outer diameter of the holding assembly 16, and the outer diameter of the first sliding assembly 14 may be substantially equal to the outer diameter of the holding assembly 16, or larger than the holding assembly 16. The outer diameter.

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

The holding unit 16 is provided with a plurality of through holes 40 as a deformation permitting portion that allows the first sliding unit 14 to move away from the upper structure 20 and the lower structure 18, for example, in the direction in which the lower structure 18 is deformed. The through hole 40 is, for example, a circular hole.

Further, as shown in FIG. 3A, the through hole 40 may be provided at one portion of the holding member 16 corresponding to the position of the central portion of the first slide unit 14. Moreover, as shown in FIG. 3B, the through hole 40 may also correspond to the circumference of the first sliding assembly 14 in the holding assembly 16. The position of the edge portion is provided at, for example, eight locations (plural portions) along the circumferential direction of the holding member 16. In the case where the through hole 40 is provided at one portion, it is preferable that the diameter is 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 slide unit 24 having a sliding surface 24A with respect to the first slide unit 14. The material of the second slide unit 24 is the same as, for example, the first slide unit 14, but stainless steel or the like can be used. As shown in FIG. 2, a lubricant 42 is disposed between the first slide unit 14 and the second slide unit 24. The lubricant 42 mainly stays in the recess 44 formed at the position of the through hole 40 and the second sliding unit 24.

(effect)

This embodiment is configured as described above, and its operation will be described below. In FIG. 1, the sliding support device 10 according to the present embodiment is fixed to one of the upper structure 20 and the lower structure 18, for example, the upper structure 20, and is interposed between the upper structure 20 and the lower structure. Between the bodies 18. Then, the load is applied to the lower structure 18 from the upper structure 20 through the slide support body 12, and the first slide unit 14 held by the holding unit 16 receives the compression load.

At this time, as shown in FIG. 2, since the through hole 40 of the holding unit 16 does not contact the first slide unit 14, a part of the compressed first slide unit 14 is deformed in the same manner as the through hole 40. Since the outer edge of the first slide unit 14 is fitted into the recess 16A of the holding unit 16, the first slide unit 14 is prevented from being diffused to the outside of the recess 16A. Then, a part of the first slide unit 14 is also deformed in a manner similar to the through hole 40 of the peripheral portion of the holding unit 16.

Thereby, the first slide unit 14 is deformed in the direction away from the other of the upper structure 20 and the lower structure 18 (the lower structure 18 in the present embodiment) at the position of the through hole 40. As a result, a recess 44 capable of retaining the lubricant 42 is formed between the first slide unit 14 and the second slide unit 24 (the other of the lower structures 18). In the example shown in FIG. 1, since the through holes 40 are provided at a plurality of portions, the recesses 44 are also formed at the plurality of portions. Since the recess 44 is subjected to a compressive load by the first sliding assembly 14, it is naturally formed in the corresponding portion of the holding assembly 16. The position of the perforation 40 is such that it is not necessary to use a dedicated mold for providing the recess 44 or to post-process the first slide unit 14.

In the present embodiment, since the deformation permitting portion is the through hole 40, the deformation permitting portion can be easily provided during the molding of the first sliding unit 14, and the deformation permitting portion can be provided even after machining. Easy. Moreover, 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 is retained between the recess 44 formed by the first sliding assembly 14 and the second sliding assembly 24, the first sliding assembly 14 and the second sliding assembly 24 can be maintained for a long period of time. Low friction. When the upper structure 20 is moved by an action such as an earthquake, the first slide unit 14 slides with respect to the second slide unit 24, whereby the acceleration acting in the horizontal direction of 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 slide unit 14 and the sliding surface of the second slide unit 24. By the first slide unit 14 sliding relative to the second slide unit 24, the acceleration acting in the horizontal direction of the upper structure 20 can be reduced.

Further, as shown in FIG. 3A, when the through hole 40 is provided in the center portion of the holding unit 16, the recess 44 in which the lubricant 42 can be retained is formed in the central portion of the first slide unit 14. Further, as shown in FIG. 3B, in the case where the through hole 40 is provided at a plurality of portions of the holding unit 16, the recess 44 capable of retaining the lubricant 42 is formed at a plurality of portions of the first slide unit 14.

Further, in the slide supporting device 10 according to the present embodiment, the first slide unit 14 is configured to slide with respect to the lower structure body 18, but the vertical direction may be reversed, and the first slide unit 14 may be reversed. It is a structure that slides with respect to the upper structure body 20.

The shape of the through hole 40 is not limited to a circular shape, but may be an elliptical shape or an oblong shape, a polygonal shape, or the like. Further, the deformation permitting portion is not limited to the through hole 40, and may be a non-penetrating concave portion. The recess can be shaped like a cylinder, a cone, a groove or the like.

Instead of providing the second slide unit 24, the other of the upper structure 20 and the lower structure 18 may be provided with a sliding surface with respect to the first slide unit 14.

(Test Example 1)

For the case of using the holding member constructed as shown in FIG. 3A, the case of using the holding member constructed as shown in FIG. 3B, and the holding member having no through hole (not shown), the coefficient of friction is investigated with respect to the first sliding member. 2 The amount of change in the number of sliding repetitions of the sliding assembly.

In the holding assembly of the configuration shown in Fig. 3A, a through hole having a diameter of 8 mm is provided at one portion of the central portion of the concave portion. In the holding unit 16 having the configuration shown in Fig. 3B, the through holes having a diameter of 2.8 mm are equally provided at eight portions of the peripheral portion of the concave portion. The through hole has a pitch diameter of 80 mm.

The material of the first sliding unit is a resin containing tetrafluoroethylene resin as a main component, and the material of the second sliding unit is SUS404. The dimensions of the first slide assembly and the second slide assembly are shown in Table 1. The amount of lubricant used was 2.5 g. Further, the test conditions are shown in Table 2 and Table 3. The test results are shown in Figure 4. 4, the holding portion is not provided with a through hole, and the amount of change in the friction coefficient increases as the number of repetitions increases. However, the holding portion is provided with a through hole, and the friction coefficient changes even if the number of repetitions increases. The amount is still small. In particular, the case of a through hole having a diameter of 8 mm is a case of a through hole having a diameter of 2.8 mm, and the amount of change in the friction coefficient is small. Therefore, the diameter of the through hole of 8 mm is superior to the case of a diameter of 2.8 mm.

Further, the holding portion is not provided with a through hole, and the friction coefficient increases as the number of repetitions increases, but the holding portion is provided with a through hole, and the amount of change in the friction coefficient is maintained low even if the number of repetitions increases. .

(Test Example 2)

In Tables 4 to 6, the difference in friction coefficient and compression deformation amount due to the difference in composition of the first holding member was tested. 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 amount>

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: oyster sauce

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

It can be seen from Table 4 and Table 5 that even if the material added to the first holding member is any of an aromatic polyester or a polyimide, the friction coefficient can be simultaneously achieved in the case where the addition ratio is 5 to 30% by weight. And the target value of the amount of compression deformation. Further, as can be seen from Table 6, when the amount of graphite added is 20% by weight or less, the target of the friction coefficient and the amount of compressive deformation can be achieved. value.

[Second embodiment]

In Fig. 5, the sliding support device 110 according to the present embodiment is disposed between the foundation formed by the ground and the building, and is provided with a vibration-proof function for supporting the building while supporting the foundation while suppressing earthquakes and the like. .

The slide supporting device 110 according to the present embodiment is provided on a foundation-formed lower structure body 112 formed at a position facing the upper structure 114 of the building provided on the upper portion of the foundation. Moreover, the upper structure 114 and the lower structure The body 112 is configured to be relatively movable in the horizontal direction, and its range of movement is limited by, for example, a baffle (not shown).

The slide support device 110 includes a second slide unit 116 fixed to the lower structure 112, and the second slide unit 116 is formed of, for example, a stainless steel plate. The second slide unit 116 is composed of a flat plate. Further, the shape of the second slide unit 116 is not particularly limited to a rectangular plate shape or a disk shape.

The upper surface of the second slide unit 116 constitutes a sliding surface 118. The sliding surface 118 may be formed by the surface of the stainless steel constituting the second sliding unit 116, or may be formed by a laminated structure in which a resin agent or the like is laminated on the surface of the stainless steel. As shown in FIGS. 6A and 6B, the sliding surface 118 is coated with a lubricant for reducing the friction coefficient to form the lubricating film 120.

Further, in the present embodiment, the lubrication film 120 is formed on the sliding surface 118 of the second slide unit 116 by the application of the lubricant, but the invention is not limited thereto. For example, a bottom hole may be provided in the second sliding unit 116 or the first sliding unit 122 to be described later, and the lubricant may be filled and held in the bottomed hole, whereby the oozing lubricant may be in the second sliding. The sliding surface 118 of the assembly 116 forms the configuration of the lubricating film 120.

The first slide unit 122 is disposed on the upper portion of the second slide unit 116. The first slide unit 122 is not fixed to the second slide unit 116, the second slide unit 116 is provided on the side of the lower structure 112, and the part including the upper portion of the first slide unit 122 is provided in the upper structure. 114 side. In addition, the material of the first sliding unit 122, the friction coefficient when the surface pressure is 20 MPa, and the amount of compression deformation when the surface pressure is 80 MPa are the same as those of the first sliding unit 14 of the first embodiment.

Although the lubricating film 120 is interposed between the first sliding unit 122 and the second sliding unit 116, a portion of the lubricating element 120 may be formed in a portion of the lubricating element 120 due to the vertical load applied to the first sliding unit 122 or There is no area of the lubricating film 120. The first sliding unit 122 is made of a low-friction resin containing a tetrafluoroethylene resin as a main component, and the material and the lubricating film 120 can be directed toward the sliding surface 118 of the second sliding unit 116. slide. Therefore, the first sliding component 122 can be an example. Such as low friction resin or low friction components or friction reducing components.

The first slide assembly 122 is also composed of a flat plate. The shape of the first slide unit 122 is not particularly limited to a rectangular plate shape or a disk shape, but is preferably a disk shape in order to easily move in all directions along the plane of the surface of the second slide unit 116. Further, since the first slide unit 122 is slidable relative to the second slide unit 116, the area thereof is configured to be smaller than the area of the second slide unit 116.

The upper portion of the first sliding assembly 122 is provided with a holding assembly 130. Although the holding member 130 is formed of metal, it may be made of other materials such as synthetic resin. The holding assembly 130 is formed to correspond to the shape of the first sliding assembly 122. The underside of the holding assembly 130 is recessed with an inset portion 130A.

The inner fitting portion 130A is formed in a cylindrical recessed shape in which the height of the upper portion of the first slide unit 122 can be accommodated, and is configured to accommodate the first slide unit 122. Further, the depth dimension of the recessed inner fitting portion 130A is set to be smaller than the thickness dimension of the first slide assembly 122. In a state in which the upper surface of the first slide unit 122 or the upper surface of the first slide unit 122 is sealed and housed in the inner fitting portion 130A, the lower surface side of the first slide unit 122 is protruded from the inner fitting portion 130A and held by The component 130 is retained.

Thereby, the holding component 130 can be, for example, a support or mounting component. Further, in the present specification, a state in which the opposing portions are housed in a state of being in close contact with each other is referred to as in-line fitting.

The outer side of the inner fitting portion 130A is also shown in FIGS. 6A and 6B, and the extended portion 130B is formed by the side wall surface of the holding unit 130. The extension portion 130B extends over the outer peripheral portion of the first slide unit along the side surface 122A of the first slide unit 122 while the first slide unit 122 is housed in the inner fitting portion 130A. Out of the place. In addition, in this specification, the state extended is called extension.

The extension portion 130B is extended to the central portion in the thickness direction of the first slide unit 122, and the side surface 122A of the first slide unit 122 is surrounded by the entire circumference in a state in which the extension portion 130B is adhered. Thereby, it is configured to prevent the first slide unit 122 from being detached from the holding unit 130 when the holding unit 130 is horizontally moved.

Further, in the present embodiment, the first sliding group is attached by the extension portion 130B. The case where the entire circumference of the side surface 122A of the member 122 is surrounded is described as an example, but the holding mechanism is not limited thereto. For example, the extension portion 130B which is a plurality of protrusions may be provided at a predetermined interval in the circumferential direction at the outer edge portion of the holding unit 130, and the extension portion 130B may be extended toward the side surface 122A of the first slide unit 122. The peripheral edge of the first slide unit 122 is held at a distance from each other.

Further, in the present embodiment, the case where the side surface 122A of the first slide unit 122 is surrounded and held by the extension portion 130B is described as an example, but the invention is not limited thereto. For example, it may be a holding structure in which the first slide unit 122 is subsequently held and held under the holding unit 130. Further, a holding structure in which the holding plate 130 and the first sliding unit 122 are coupled to or held by the recessed portion provided in the opposing surface of the holding unit 130 and the first sliding unit 122 may be used.

The outer edge portion of the top surface 130C of the inner fitting portion 130A of the holding member 130 is formed with a concave portion 132 that is retracted upward. The concave portion 132 is extended over the entire circumference of the outer edge portion of the top surface 130C. As shown in FIGS. 6A and 6B, the concave portion 132 constitutes a rectangular groove having a rectangular cross section extending along the inner side of the extended portion 130B.

Thereby, the recessed portion 132 is provided in a portion corresponding to the upper edge portion 122B of the first slide unit 122 in a state where the first slide unit 122 is housed in the holding unit 130. Further, when the first slide unit 122 is deformed, the outer edge portion 122B of the first slide unit 122 can be deformed in a direction away from the sliding surface 118 of the second slide unit 116 (ie, upward), and by the recess. 132 is configured to have a deformation permitting portion that can be allowed to deform.

Then, among the holding members 130, the inner side of the concave portion 132 in the top surface 130C of the inner fitting portion 130A is in contact with the first sliding member 122. Thereby, the vertical load applied to the first slide unit 122 from the holding unit 130 is transmitted from the surface contact portion. The transmission of the load on the first slide unit 122 is configured to be transmitted from the center of the top surface 130C. A transmission structure is formed in which the load of the upper structure 114 is more transmitted from the center portion which is located further inside than the outer edge portion 122B of the first slide unit 122.

Thereby, the deformation permitting portion can be, for example, a deformation permitting structure or pressure. Suppress the structure. Further, since the deformation permitting portion is constituted by the concave portion 132 which is retreated upward from the top surface 130C of the inner fitting portion 130A, the step portion is provided with respect to the top surface 130C. Thus, the deformation permitting portion can be said to be a step portion.

Further, although the case where the cross-sectional shape of the concave portion 132 constituting the deformation permitting portion is formed in a rectangular shape will be described as an example, the present invention is not limited thereto. For example, the cross-sectional shape may be other shapes such as a semicircle or a triangle.

Further, when the first slide unit 122 is held by the holding unit 130, the portion of the holding unit 130 facing the outer edge portion 122B of the first slide unit 122 may be missing from the side. The deformation permitting portion of the extension portion 130B is omitted. Moreover, the outer shape of the holding unit 130 may be smaller than the first sliding unit 122, and the outer edge portion 122B of the first sliding unit 122 may be deformed in a direction away from the sliding surface 118 of the second sliding unit 116. A deformation allowance portion is formed. Further, the deformation permitting portion also constitutes a communication structure for conveying the load of the upper structure 114 more from the center portion which is located further inside than the outer edge portion 122B of the first slide unit 122.

Further, the recessed portion 132 constituting the deformation permitting portion does not necessarily have to be a space as long as the outer edge portion 122B of the first slide unit 122 can be deformed in a direction away from the sliding surface 118 of the second slide unit 116. For example, if it is possible to allow deformation of the first slide unit 122, it may be a soft body such as a sponge. Then, the concave portion 132 constituting the deformation permitting portion is not necessarily formed continuously over the entire circumference of the holding unit 130, and may be partially intermittently formed.

As shown in FIG. 5, the upper portion of the holding member 130 is provided with an elastic support body 136 which is formed in a cylindrical shape. The lower portion of the elastic support body 136 is provided with a thick disk-shaped connecting steel plate 138, and the connecting steel plate 138 is disposed on the holding unit 130. The lower end 138A of the connecting steel plate 138 has an upper end portion of the dense bottom plate 140 embedded therein, and the lower end portion of the dense bottom plate 140 is fitted to the upper surface 130D of the holding unit 130. Thereby, the connecting steel plate 138 of the elastic support body 136 is prevented from being laterally displaced in a state of being coupled to the holding unit 130, and the elastic supporting body 136 is coupled to the holding unit 130.

The upper part of the connecting steel plate 138 is alternately laminated with a plurality of disk-shaped rubber layers The 142 and the disk-shaped metal plate 144 are provided with a rubber layer 142 at the uppermost portion. The connecting steel plate 138, the metal plate 144, and the rubber layer 142 are surrounded by a rubber peripheral wall 146 formed of rubber forming the rubber layer 142, and the front end of the rubber peripheral wall 146 is joined to the circumferential surface of the holding unit 130. Thereby, the entire elastic support body 136 is covered by the rubber and the holding member 130 to ensure watertightness.

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 constitute a laminated structure in which the connecting steel plate 138, the metal plate 144, and the rubber layer 142 are integrated. Thereby, it has a specific hardness with respect to the load in the vertical direction. Further, the load in the horizontal direction is configured to exhibit a spring function while ensuring a specific amount of deformation. Thus, it is configured to absorb energy by deformation of the elastic support body 136 with respect to small shaking.

A mounting plate 150 is fixed to an upper portion of the elastic support body 136. The portion outside the drawing of the mounting plate 150 is fixed to the upper structure 114 by bolts. Thereby, the elastic member 136, the holding member 130 fixed to the lower portion of the elastic support 136, and the first sliding unit 122 held by the holding unit 130 are provided on the side of the upper structure 114.

(effect)

Next, the action of this embodiment will be described. In the present embodiment related to the above configuration, the holding unit 130 is formed with a deformation permitting portion capable of allowing the outer edge portion 122B of the first slide unit 122 to be deformed in a direction away from the sliding surface 118 by the concave portion 132. Then, as shown in FIG. 6A, the vertical load from, for example, the upper structure 114 is transmitted to the central portion of the first slide unit 122. When the first slide unit 122 is deformed, the outer edge portion 122B faces away from the sliding surface. The deformation above 118.

Therefore, when the lower structure body 112 and the upper structure body 114 are relatively moved in the horizontal direction, there is no comparative example in which the top surface 130C of the inner fitting portion 130A of the holding unit 130 is not formed with the concave portion 132 as shown in FIG. 6B. The outer edge portion 122B of the first slide unit 122 is deformed in such a manner as to be deformed toward the sliding surface 118 side to form an acute-angled edge 122C. Thereby, the edge 122C pushes the lubricant of the outer peripheral portion of the first sliding member 122 to the first sliding assembly as compared with the comparative example in which the edge 122C is formed. The lubricant at the recovery position of the first slide unit 122 can be maintained in the case of the movement range of 122.

Thereby, the lubricating film 120 that is maintained when the first sliding unit 122 returns to the specific position can be reused. Then, as shown in FIG. 6A, the reduction of the usable lubricant can be suppressed even if the first sliding unit 122 is slid.

Therefore, it is possible to maintain the lubricating film 120 having a specific thickness and to suppress an increase in the friction coefficient without paying attention to the selection of the type or type of the lubricant or the countermeasure of keeping the amount of the lubricant large. Thereby, the friction coefficient of the first slide unit 122 can be stabilized, and the repeating characteristics at the time of sliding can be improved.

Further, as shown in FIG. 6A, the outer edge portion 122B of the first slide unit 122 is deformed in a direction away from the sliding surface 118. Therefore, the first sliding unit 122 may be located at the outer edge portion 122B of the first sliding unit 122, and the lower surface of the sliding surface 118 side may be deformed upward from the sliding surface 118 to make the outer edge portion of the first sliding unit 122. The closer the 122B is to the outer edge, the more it deforms upward, and becomes the deformed portion 122D.

In the above-described case, since the corner portion can be rounded, the lubricant can be introduced between the first slide unit 122 and the sliding surface 118 by the gap formed between the deformed portion 122D and the sliding surface 118. Thus, an increase in the friction coefficient of the first slide unit 122 and the sliding surface 118 can be suppressed.

Furthermore, the holding unit 130 is provided with an extending portion 130B extending along the side surface 122A of the first sliding unit 122. Then, when the lower structure 112 and the upper structure 114 are relatively moved in the horizontal direction to horizontally move the first slide unit 122 with respect to the sliding surface 118, the extension portion 130B can be brought into contact with the first slide unit. The side of 122. Thereby, since the first slide unit 122 can be supported from the side by the extension portion 130B, the holding force of the holding unit 130 for the first slide unit 122 during sliding can be improved.

7A and 7B show the sliding support device 110 according to the present embodiment and the comparative example, in which the pressure sensitive paper is sandwiched between the second slide unit 116 and the first slide unit 122, and is pressurized at 20 MPa. The schema of the experimental results. Fig. 7A shows the pressure sensitive paper used in the present embodiment in which the holding unit 130 is provided with the concave portion 132, and Fig. 7B shows the protection paper. The holding member 130 is not provided with the pressure sensitive paper used in the comparative example of the concave portion 132.

As a result of the experiment, in the comparative example of FIG. 7B, the outer peripheral portion 200 of the pressure sensitive paper exhibits a portion having a rich color, whereby it can be confirmed that the pressure of the outer peripheral portion of the first sliding member 122 is high, and the first sliding member 122 is high. The outer edge portion 122B is deformed toward the sliding surface 118 side to form an acute-angled edge 122C.

On the other hand, in the present embodiment of FIG. 7A, the outer peripheral portion 210 of the pressure sensitive paper exhibits a lighter color portion, and it is understood that the outer peripheral portion of the first sliding member 122 has a low pressure, and the first sliding member 122 is lower. The outer edge portion 122B is deformed in a direction away from the sliding surface 118.

8A and 8B are diagrams showing the repeated friction characteristics of the slide supporting device 110 and the comparative example according to the present embodiment. This embodiment is used for the holder 130 to be provided with the recess 132. The comparative example is used in the case where the holding member 130 is not provided with the recess 132.

FIG. 8A is a view showing a comparison of the sliding friction coefficient of the first cycle based on the first sliding unit 122 moving in the horizontal direction with respect to the second sliding unit 116. From the results of the experiment, it is understood that in the comparative example, the friction coefficient increases when the number of repetitions exceeds a specific value, but in the present embodiment, the friction coefficient does not increase even if the number of repetitions increases.

FIG. 8B is a view showing a comparison of the friction coefficient of the third cycle based on the movement of the first slide unit 122 in the horizontal direction with respect to the second slide unit 116. From the results of the experiment, it is understood that in the comparative example, the friction coefficient increases when the number of repetitions exceeds a specific value, but in the present embodiment, the friction coefficient does not increase even if the number of repetitions increases.

Fig. 9 is a view showing a history curve (one cycle) of the slide supporting device 110 and the comparative example according to the present embodiment. In the present embodiment, the holding unit 130 is provided with a concave portion 132, and as a comparative example, The retaining assembly 130 is not provided with a recess 132.

FIG. 9A shows a comparison of the friction coefficient ratio in the case where the slip friction coefficient is 1, and shows the friction coefficient ratio when the first slide unit 122 is moved in the horizontal direction with respect to the second slide unit 116. In Fig. 9A, the horizontal axis represents horizontal displacement and the vertical axis The ratio of the coefficient of friction when the slip coefficient of friction is set to 1.

From the results of the experiment, it was found that in the comparative example, the change in the friction coefficient ratio was large with respect to the moving position in the horizontal direction, and the friction coefficient was unstable. On the other hand, in the present embodiment, it is understood that the change in the friction coefficient ratio with respect to the movement position in the horizontal direction is small, and the friction coefficient is relatively stable.

FIG. 9B is a view showing a comparison of the history curve (one cycle), showing the amount of change in the friction coefficient when the first slide unit 122 is moved in the horizontal direction with respect to the second slide unit 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 was found that in the comparative example, the change in the friction coefficient ratio was large with respect to the moving position in the horizontal direction, and the friction coefficient was unstable. On the other hand, in the present embodiment, it is understood that the change in the friction coefficient ratio with respect to the movement position in the horizontal direction is small, and the friction coefficient is relatively stable.

As a result of the above-described experimental results, it was found that the repeating characteristics of the sliding support device 110 of the present embodiment are higher than those of the comparative example, and the history characteristics can be stabilized, whereby the effect of lowering the friction can be obtained.

Further, in the present embodiment, the case where the holding unit 130 is provided on the side of the upper structure 114 and the sliding surface 118 is set on the side of the lower structure 112 has been described, but the invention is not limited thereto. A sliding surface 118 may be provided on the side of the upper structure 114, and a holding unit 130 may be provided on the side of the lower structure 112.

The embodiments of the present invention have been described above, but the embodiments of the present invention are not limited to the above-described embodiments, and various modifications may be made without departing from the spirit and scope of the invention. Implement it. Further, the configuration described in the above embodiment may be combined as appropriate.

The present specification is hereby incorporated by reference in its entirety in its entirety in its entirety the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire all

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

10‧‧‧Sliding bearing device

12‧‧‧Sliding support body

14‧‧‧1st sliding assembly

14A‧‧‧Sliding surface

16‧‧‧Retaining components

16A‧‧‧ recess

18‧‧‧Lower structure

20‧‧‧Upper structure

22‧‧‧Layered

24‧‧‧2nd sliding assembly

24A‧‧‧Sliding surface

26‧‧‧Upper mounting plate

28‧‧‧Link board

30‧‧‧Metal plates

34‧‧‧ rubber

36‧‧‧coated rubber

38‧‧ ‧ dense bottom plate

40‧‧‧through holes

44‧‧‧ dent

Claims (17)

A sliding support device having a sliding support body interposed between a lower structure and an upper structure disposed above the lower structure, and fixed to one of the upper structure and the lower structure a first sliding assembly disposed on the sliding support body and having a sliding surface with respect to the other of the upper structure and the lower structure; and a holding assembly interposed between the sliding support body and the first The first slide unit is held between the slide units, and a deformation permitting portion that allows the first slide unit to be deformed in a direction away from the other of the upper structure and the lower structure is provided. The sliding support device of claim 1, wherein the deformation permitting portion is a through hole. The sliding bearing device of claim 2, wherein the through hole is a circular hole. The sliding bearing device of claim 2, wherein the through hole is formed at a position corresponding to a central portion of the first sliding assembly. A sliding bearing device according to any one of claims 2 to 4, wherein the through hole is formed at a plurality of locations. The sliding support device according to any one of claims 1 to 5, wherein the other of the upper structure and the lower structure is provided with a second sliding having a sliding surface with respect to the first sliding assembly a component; a lubricant is disposed between the first sliding component and the second sliding component. A sliding support device having: a holding unit disposed in opposite directions and capable of relatively moving the upper structure and the lower structure in a horizontal direction; wherein the first sliding unit is held by the holding unit; And sliding along a sliding surface provided by the other of the upper structure and the lower structure; and the deformation permitting portion is provided in the upper structure and the lower structure One of them allows the outer edge portion of the first slide unit to be deformed in a direction away from the sliding surface. The sliding support device according to claim 7, wherein the holding member is formed with a concave portion corresponding to a portion of the outer edge portion of the first sliding member, and the deformation permitting portion is formed. The sliding bearing device of claim 7 or 8, wherein the holding member has an extension extending to a side of the first sliding member. A sliding support device having: a second sliding assembly disposed on a side of a lower structure and having a sliding surface; a first sliding assembly sliding on the second sliding assembly; and a holding assembly from the upper structural body The first sliding unit is held sideways, and the load of the upper structure is more transmitted to the center portion than the outer edge of the first sliding unit. The sliding support device according to any one of claims 1 to 10, wherein the first sliding member is a tetrafluoroethylene resin composition containing an aromatic polyester or a polyimide. The sliding support device according to any one of claims 1 to 10, wherein the first sliding member comprises a tetrafluoroethylene resin composition of 5 to 30% by weight of an aromatic polyester. The sliding support device according to any one of claims 1 to 10, wherein the first sliding member contains 5 to 30% by weight of a tetrafluoroethylene resin composition of polyimine. The sliding support device according to any one of claims 11 to 13, wherein the first sliding member further contains one or more of carbon fiber, graphite, glass fiber, molybdenum disulfide, potassium titanate, and bronze. The sliding bearing device according to any one of claims 11 to 13, wherein the first sliding component further comprises more than 0 and 20 wt% of carbon fiber, graphite, glass fiber, molybdenum disulfide, potassium titanate, and bronze. One or more. A sliding bearing device according to any one of claims 11 to 15, wherein The friction coefficient of the first sliding unit when the surface pressure is 20 MPa is 0.01 or less. The sliding support device according to any one of claims 11 to 15, wherein the first sliding assembly has a compressive deformation amount of 40% or less when the surface pressure is 80 MPa.