JPH06137328A - Slider - Google Patents

Abstract

(57) [Summary] [Purpose] It has excellent friction and wear characteristics, does not damage the slip surface of the mating member, prevents cracks and chips, and has excellent strength. Provide a non-limiting slider. [Structure] In a slider 3, a synthetic resin sheet 5 having PTFE as a main component fixed to an outer surface of a thin-walled structural member 4 forms a sliding surface. Since the structural member and the synthetic resin sheet are divided into a two-layer structure, the respective characteristics are easily exhibited, and the above object is achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slider used for a linear guide portion of office equipment, audio equipment, measuring equipment and the like.

[0002]

2. Description of the Related Art Conventionally, as a mechanism for slidingly guiding the linear movement of parts constituting equipment, a slider having a sliding surface facing a plane sliding surface of a way and reciprocating linearly along the way is used. Has been. This conventional slider is made of thermoplastic synthetic resin (particularly engineering plastics) or thermoplastic synthetic resin, graphite, carbon fiber, glass fiber, graphite, molybdenum disulfide,
Using a composite material mixed with a filler such as fluororesin,
It was injection molded into a predetermined shape.

[0003]

However, the slider injection-molded from the thermoplastic synthetic resin alone has a problem that the wear resistance and the abrasion resistance are insufficient and the life of the slider is short. On the other hand, a slider injection-molded using a composite material mixed with a filler has improved wear resistance and abrasion resistance, but on the other hand, it has various problems as follows. That is, a mixture of hard fibrous fillers such as carbon fibers and glass fibers damages the slip surface of the raceway which is a mating member. In addition, when a non-fibrous filler such as graphite, molybdenum disulfide, or fluororesin is mixed, the strength and springiness of the injection-molded slider (particularly required when a snap-fit structure is used) are reduced. As a result, cracks and chips easily occur, and the slider mounting structure is limited.

Therefore, the present invention has been made by paying attention to the above-mentioned conventional problems, and has excellent friction characteristics and wear characteristics, and further, does not damage the slip surface of the mating member and causes cracks or chips. It is an object of the present invention to provide a slider which can prevent the above-mentioned problems, has excellent strength, and is not particularly limited in its mounting structure.

[0005]

SUMMARY OF THE INVENTION The present invention, which achieves the above object, relates to a slider which has a sliding surface opposed to a sliding surface of a way and linearly moves with respect to the way, and the slider is a thin plate. The synthetic resin sheet having PTFE (polytetrafluoroethylene) as a main component, which is fixed to the outer surface of the structural member, forms a slip surface.

[0006]

The slider of the present invention is used by being attached to the lower surface of the movable table which moves linearly back and forth with respect to the track. Since the sliding surface of the slider is formed of a synthetic resin sheet containing PTFE as a main component, it has excellent friction characteristics and wear characteristics and does not damage the sliding surface on the other side. Further, a thin sheet is used as the synthetic resin sheet, so that cracking or chipping can be prevented.

Further, since the synthetic resin sheet is lined with a thin-walled structural member to form a two-layer structure, the characteristics of the structural member can be selected according to the use conditions, and the required strength and springiness can be selected. It is easy to give, and the mounting structure to the movable table can be variously adopted according to the application, so that the degree of freedom in design is expanded.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment.
Is a front sectional view, and FIG. 2 is a side sectional view. First, the structure will be described. 1 is a fixed track which is long in the axial direction,
Reference numeral 2 denotes a movable table which linearly reciprocates in two directions A and B with the plane sliding surface 1a of the track 1 as a guide surface. A slider 3 of the present invention is attached to the lower surface of the movable table 2. This slider 3 has a two-layer structure in which a synthetic resin sheet 5 containing PTFE as a main component and filled with econol, graphite or the like as a wear property improving substance is bonded to the surface of a structural member 4 made of an elastic thin aluminum plate. The synthetic resin sheet 5 is provided on the front surface side of the convex portion 3a, which is curved in a spherical shape, and the mounting portion 3b, which surrounds the peripheral edge of the convex portion 3a.
The mounting portion 3b is fixed to the movable table 2 by adhering it to the lower surface of the movable table 2.

The slider 3 has a sliding surface 3c at the top of the spherical convex portion 3a, and the sliding surface 3c is in contact with the sliding surface 1a of the track. Next, the operation will be described. The movable table 2 receives an external force and reciprocates linearly on the sliding surface 1a of the track table 1 in the A direction and the B direction indicated by arrows. When the movable table 2 moves, the sliding surface 3c of the slider 3 comes into contact with the sliding surface 1a of the track 1 and slides. Since the sliding surface 3c of the slider is formed of a synthetic resin containing PTFE, which is excellent in friction characteristics and wear characteristics, as a main component, sliding is extremely smooth, and the sliding surface 1a on the other side is not damaged.

Further, since the synthetic resin sheet forming the sliding surface 3c of the slider 3 is a thin sheet, it does not crack or chip. Further, since the sliding surface 3c is a spherical surface having a two-layer structure in which the synthetic resin sheet is lined with a thin aluminum plate material, the sliding surface 3c is excellent in strength. FIG. 3 shows a second embodiment.

In this embodiment, one slider 3 is provided with two hemispherical convex portions 3a. On the other hand, the rail 1 of this embodiment has a two-layer structure in which a thin plate 8 made of stainless steel is bonded to the upper surface thereof, and a surface 8 of the thin plate 8 made of stainless steel is used.
a is the sliding surface of the way 1. The slider 3 is fixed to the lower surface of the movable table 2 by a mounting pin 7, and is in contact with the sliding surface 8a of the track 1 at two sliding surfaces 3c. By increasing the number of the sliding surfaces 3c of the slider 3 in this way, the load of the movable table 2 is dispersed, so that a larger load can be received. Further, there is an advantage that it is easier to secure the accuracy of the sliding surface roughness of the track way 1 than in the case of the first embodiment.

Other configurations, operations and effects are almost the same as those of the first embodiment. 4 and 5 show a third embodiment. The slider 3 of this embodiment uses a thin metal plate having high elasticity as the structural member 4 constituting one of the two-layer structure. By bending the strip of the metal thin plate, a curved convex portion 3a as shown in FIG. 4 and a snap-fitting mounting portion 3b formed of two opposing elastic projections are formed. The synthetic resin sheet 5 constituting the other of the two-layer structure is
Only the outer surface (that is, the outer surface other than the mounting portion 3b) corresponding to the convex portion 3a of the structural member 4 is bonded.

The slider 3 has an advantage that it can be attached to the lower surface of the movable table 2 with one touch by inserting the snap-fitting attachment portion 3b into the rectangular through hole 9 provided in the movable table 2. A fourth embodiment is shown in FIGS. 6 and 7.
The slider 3 of this embodiment differs from the third embodiment in the shape of the convex portion 3a and the structure of the mounting portion 3b. As shown in FIG. 6, the convex portion 3a is bent into a trapezoidal front shape, and the sliding surface 3c at the bottom thereof is in contact with the sliding surface 8a of the raceway 1. The mounting portions 3b ₁ and 3b ₂ are formed at both ends of the slider 3 in the longitudinal direction. One mounting end 3
b ₁ has a double-layered flange shape and is in contact with the lower surface of the movable table 2. The other mounting end 3b ₂ has a caulking structure, in which the structural member 4 made of a thin metal plate having elasticity is bent, the movable table 2 is penetrated from the lower surface to the upper surface, and then the end projecting to the upper surface is caulked. It is fixed to.

In the slider 3 of this embodiment, the structural member 4 bends slightly when the load of the movable table 2 is received, and the sliding surface 3c of the slider 3 is on the surface 8a of the stainless steel thin plate 8 which is the sliding surface of the track 1. It has the advantage of making uniform contact.
Note that FIG. 7 shows one movable table 2 to which two sliders 3 are attached. A fifth embodiment is shown in FIGS.

The slider 3 of this embodiment is one slider 3 provided with four sliding surfaces 3c. In this device, for example, a peripheral edge of a plate material having a two-layer structure composed of a structural member 4 made of a thin metal plate having elasticity and a synthetic resin sheet 5 is used as a mounting portion 3b, and a notch is formed in a central portion to form a J-shape. It can be formed by bending and providing four convex portions 3a. The slip surface 3c is each convex portion 3a
It is provided in. The mounting portion 3b is fixed to the lower surface of the movable table 2 with a screw 11, and four convex portions 3a are mounted in a set.

The slider 3 of this embodiment has four protrusions 3.
a is independent of each other, and the slip surfaces 3c are absorbed by the spring property of the structural member 4 even if the heights are slightly different,
The sliding surface 8a of the track 1 is contacted almost uniformly. Therefore, there is an advantage that the load of the movable table 2 can be evenly received. Although not shown, one movable table 2
Even when the slider 3 is attached at two positions, all the sliding surfaces 3c can be brought into contact with the sliding surface 8a of the track 1 substantially uniformly.

A sixth embodiment is shown in FIGS. In the slider 3 of this embodiment, the convex portion 3a has a pantograph shape having a high spring property, and the mounting portion 3b has a snap-fit structure similar to that of FIG. The synthetic resin sheet 5 has a convex portion 3
It is located on the lower surface of a. Easy to attach / detach to / from the movable table 2,
It has the advantage of high elasticity.

FIG. 12 shows a seventh embodiment. The slider 3 of this embodiment is different from the slider 3 shown in FIG. 6 in the structure of one mounting portion 3b ₂ . That is, the mounting portion 3b ₂ at the left end in the figure is one in which the end portion of the structural member 4 is formed in a U shape and the screw hole 12 is provided. The screw 11 inserted into the movable table 2 is screwed into the screw hole 12 and tightened to attach the slider 3 to the movable table 2 and adjust the height of the sliding surface 3c of the slider 3. This has the advantage that the height of the slider 3 can be easily adjusted.

FIG. 13 shows an eighth embodiment. The slider 3 of this embodiment has a curved convex portion 3a, and both ends thereof are provided with mounting portions 3b formed in the same U-shape as described above. Similarly to the above, it is possible to easily adjust the height of the sliding surface 3c of the slider 3 by adjusting the tightening of the mounting screw 11.

It should be noted that the sliders 3 of the above-described embodiments may be used in an appropriate combination. Further, as the synthetic resin sheet, a sheet obtained by mixing econol, graphite and the like with PTFE as a main component is used, but the sheet is not limited to this. Any material that improves the wear characteristics that does not damage the slip surface of the rail, which is the mating member, may be used, and for example, molybdenum disulfide, polyimide, bell pearl, aramid fiber, or the like can be used. The content of PTFE is preferably 50 to 90% by weight. If it is less than 50%, the abrasion property which is the property of PTFE deteriorates. On the other hand, if it is more than 90%, the amount of the wear-improving substance added becomes too small, and the wear resistance becomes insufficient.

The thickness of the synthetic resin sheet is 0.1 to
2.0 mm is preferable, but the thickness is not limited to this range and may be any thickness as long as it can be formed into a required shape. Also,
The structural member of the thin plate may be a metal (for example, mild steel, hard steel, spring steel, stainless steel, aluminum, copper, etc.) or a synthetic resin, and the one having necessary characteristics is appropriately selected and used according to the use conditions. be able to. The plate thickness may be appropriately selected as necessary.

Further, in each of the above-described embodiments, only the track base 1 is fixed and only the movable base 2 to which the slider 3 is attached is linearly moved. However, the present invention is not limited to this, and the track base 1 is also a slider. It is possible to move linearly with respect to 3.

[0023]

As described above, in the slider 3 of the present invention, the synthetic resin sheet having PTFE as a main component, which is fixed to the outer surface of the thin-walled structural member, forms the sliding surface. Therefore, it is possible to obtain an effect that it is excellent in friction characteristics and wear characteristics, and it is possible to prevent the occurrence of cracks and chips without damaging the slip surface of the other side.

Further, by separating the sliding member and the structural member, the structural member can be selected only by the characteristics such as strength and spring property required according to the use conditions, and the degree of freedom in design is expanded. It is possible to obtain the effect that various mounting structures can be adopted according to the application.

[Brief description of drawings]

FIG. 1 is a front sectional view of a first embodiment of the present invention.

FIG. 2 is a side sectional view of what is shown in FIG.

FIG. 3 is a front sectional view of a second embodiment of the present invention.

FIG. 4 is a front sectional view of a third embodiment of the present invention.

5 is a side cross-sectional view of what is shown in FIG.

FIG. 6 is a front sectional view of a fourth embodiment of the present invention.

FIG. 7 is a side view of what is shown in FIG.

FIG. 8 is a front sectional view of a fifth embodiment of the present invention.

FIG. 9 is a side view of what is shown in FIG.

FIG. 10 is a front sectional view of a sixth embodiment of the present invention.

FIG. 11 is a side view of what is shown in FIG.

FIG. 12 is a front sectional view of a seventh embodiment of the present invention.

FIG. 13 is a front sectional view of an eighth embodiment of the present invention.

[Explanation of symbols]

 1 Track 1a Sliding surface 2 Movable table 3 Slider 3a Convex part 3b Mounting part 3c Sliding surface 4 Structural member 5 Synthetic resin sheet

Claims (1)

[Claims] 1. A slider which has a sliding surface facing a sliding surface of a track and which linearly moves with respect to the track, wherein the slider is mainly composed of PTFE fixed to an outer surface of a structural member of a thin plate. A slider having a synthetic resin sheet forming a slip surface.