JP2000192956A - Slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide device composed of a rail and a guide, capable of being miniaturized, capable of reducing weight, inexpensively manufacturable, endurable to a load from all directions and slidingly movable by motive power. SOLUTION: A slide device is composed of a nonsteel bar-shaped rail 1 forming three or more lengthwise directional grooves 5 mounted with a rail protective plate 4 having high strength on parallelly opposed both side surfaces 3 and a frame-shaped guide 2 having a shaft 7 fixed to a right-angled outward directional inside surface 6 of a position corresponding to the groove 5, having a diameter formed slightly smaller than a distance between both sides in the groove 5 and respectively arranging two or more bearings 8 housed in the groove 5 in the lengthwise direction, and is supported by contact of the rail protective plate 4 having high strength and a peripheral side surface 9 of the bearings 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a rail and a guide, which can be reduced in size and weight, can be manufactured at low cost, can withstand loads from all directions, and can be slid by a bolt and nut. It relates to a certain slide device.

[0002]

2. Description of the Related Art Conventionally, a steel rail in which a bearing shaft is arranged in such a manner that a bearing is applied vertically from both sides of a steel rail formed simply in a prismatic shape and sandwiched between the peripheral side surfaces of the bearing. And a slide device composed of the following.

Conventionally, there has been no slide device in which a bolt rotated by power is provided on a guide side and a nut is provided on a rail side.

[0004]

The above conventional slide device has the following problems.

[0005] The widthwise direction is structurally large, and it has been difficult to reduce the size. Looking at the size of the conventional slide device in the width direction, it will be at least the width of the rail located at the center, the plus, the diameter of one bearing, the plus, the diameter of the other bearing, and cover the whole That guide is even bigger than that.

[0006] The conventional slide device requires that the peripheral surface of the bearing take the rail vertically for a load applied in the width direction. Cannot be taken vertically, and cannot bear a load. It can only handle loads in a certain direction.

[0007] Since both the rails and the guides are made of steel, they are heavy, and it is difficult to reduce the weight, and the manufacturing cost has to be increased. This is due to the need for structural strength and strength to withstand the friction of the bearing, so there was no room for selecting other materials. If the strength is low, the rails and guides may be broken, and if the rails are shaved by the bearings, the accuracy of the rails and guides will be reduced and rattled.

[0008] A feature of the slide device for moving the nut with a bolt that rotates by power is that the direction of the bolt and the nut that are screwed together completely match, and there is no play. On the other hand, a slight but slight displacement may occur between the direction in which the rail and the guide face. Also, there may be play between the rail and the guide. Further, the rotation of the bolt may be slightly but slightly shifted from the center. Some slide devices with the bolts fixed on the guide side and the nuts fixed on the rail side do not absorb the above-mentioned misalignment anywhere and place an undue burden on the device. Can be

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and is a slide which can be reduced in size and weight, can be manufactured at low cost, can withstand loads from all directions, and can be slid by a bolt and nut. It is intended to provide a device.

[0010]

A first aspect of the present invention is a slide device in which a rail passes through the inside of a guide and is slidable in a linear direction. A non-steel rod-shaped rail having three or more longitudinal grooves in which a strong rail protection plate is mounted, and a shaft at a right-angled outer surface at a position corresponding to the three or more grooves of the rail. Two or more bearings, each having a diameter slightly smaller than the distance between the opposed high-strength rail protection plates on the inner surface of the groove of the rail and having a size that can be accommodated in the groove, are provided in the length direction. A slide device comprising a frame-shaped guide that slidably supports a rail protection plate having high strength on the inner surface of the groove on the peripheral surface of the bearing, and is capable of responding to a load from any direction. It relates.

[0011] A second aspect of the present invention is a slide device in which a rail passes through the inside of a guide and is slidable in a linear direction. A non-steel rod-shaped rail having three or more longitudinal grooves in which is mounted, and bolted from both ends with three or more long bolts and nuts in the longitudinal direction; The shaft is fixed to the inner surface in the direction perpendicular to the outside at the position corresponding to the number of grooves and the diameter is slightly smaller than the distance of the opposed high strength rail protection plate on the inner surface of the groove of the rail and fits in the groove. And a frame-shaped guide slidably supporting the rail protection plate having a high strength on the inner surface of the groove on the peripheral side surface of the bearing. It can respond to load from relates sliding device according to claim.

A third aspect of the present invention is that, in the above-described slide device, a space portion having at least one open end is formed in the rail, and a nut attached via an elastic rubber is prevented from rotating. Provided at one end where the space is open, a bolt that is rotated by power is inserted from one end of the guide and provided so as to be located inside the guide. The sliding device is characterized in that a smooth sliding movement is possible by absorbing the gap between the rail and the guide and the backlash between the rail and the guide and the rotation of the bolt by moving the nut to move the gap. It is about.

According to the above-described slide device, since the bearing is accommodated in the groove of the rail, the size in the width direction can be reduced accordingly.

Since the bar-shaped rail has three or more longitudinal grooves and the guide is provided with bearings corresponding to these grooves, it can withstand and respond to loads from any direction. For example, when a load is applied from a direction perpendicular to one groove on one surface and no load is applied to a bearing in this groove, the bearing in a groove on another surface bears the load. For example, when a load is applied to a groove on any surface of a rail from an oblique direction that is not a right angle, the load is distributed and applied to bearings in a plurality of grooves on a plurality of surfaces.

The non-steel rail may be made of any material as long as it is non-steel and has a certain strength. Examples of the material of the rail include aluminum, plastic, and wood. A high-strength rail protection plate is installed on the inner surface of the rail groove, so even if the rail material is not steel, it will not wear or deform due to friction with the peripheral surface of the bearing. Absent. The high strength rail protection plate reinforces the rail strength. By selecting a material other than steel for the rail, it is possible to reduce the weight. Aluminum, plastic, wood, and the like have lower material costs than steel, and therefore lower manufacturing costs. The guide may be made of any material as long as the guide has sufficient strength to fix the shaft of the bearing.

By tightening bolts from both ends with three or more long bolts and nuts in the length direction of the rail, the bending strength of the rail is enhanced and the rail is less likely to break. For example, if a rail is likely to bend under a load from one direction,
Normally, the side to which the rail load is applied tends to expand, and the opposite side of the rail tries to shrink in reverse, but since it is bolted from both ends in the length direction with three or more bolt nuts,
Both are blocked by bolts. Non-steel rails such as aluminum, plastic, and wood have lower bending strength and are more easily broken than steel rails, but can be reinforced with bolts and nuts.

In a slide device for rotating a bolt by power to move a nut, the nut is mounted on a rail via elastic rubber, and a gap between the rail and the guide, a play between the rail and the guide, and a bolt are provided. The rotation deviation can be absorbed by the rubber, and the sliding movement can be smoothly performed without imposing an excessive load by rotating the bolt.

The space opened at at least one end of the rail is provided inside the guide with a bolt rotated by power inserted from one end of the guide, and is screwed through a nut to enter and exit while rotating. Space. With this structure, a smart and compact slide device can be obtained.

The grooves, spaces and the like formed in the rail contribute to weight reduction and material cost reduction.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings based on embodiments, but it is needless to say that the present invention is not limited to the following embodiments. 13 (A) and FIG. 14 (A) are central longitudinal sectional views, but in other drawings, one surface of the guide 2 is cut out so that the internal structure can be seen. It is sectional drawing.

In the figure, reference numeral 1 denotes a rail, and reference numeral 2 denotes a guide. The rail 1 passes through the inside of the guide 2 and can slide freely in a linear direction. Either the rail 1 or the guide 2 may be fixed and either may be moved. The installation direction is
It may be horizontal, vertical or oblique. A high-strength rail protection plate 4 of the groove inner surface 3 on the rail 1 side is slidably supported by a peripheral side surface 9 of a bearing 8 on the guide 2 side. The slide device of the present invention has a structure capable of responding to a load from any direction.

The rail 1 has a rod shape. The material is non-steel, and it does not matter if it has some strength and is light,
It can be aluminum, plastic or wood. The rail may have any shape such as a triangle, a square, a pentagon, a hexagon, a circle, etc., but in the embodiment, the rail is round, and the rail 1 has four longitudinal grooves 5 (FIG. 14 excluding the eighth embodiment).
A rail protection plate 4 having high strength is mounted on at least only the groove inner side surfaces 3 facing each other in parallel. The rail protection plate 4 having high strength is required to have strength enough to withstand a load. Although the material is not limited, a stainless steel plate is used in this embodiment to prevent rust and strength. The high-strength rail protection plate 4 of the embodiment has a U-shaped cross section,
It is mounted in the groove 5 (except for the eighth embodiment in FIG. 14).
Three or more grooves 5 are formed in the rod-shaped rail 1. The rail 1 of the present embodiment has a space 12 having an open rear end.
(Except for the eighth embodiment in FIG. 14). The space portion 12 can receive a bolt 15 rotated by power or can pass an electric wire (not shown). A front cover 16 is attached to one end in front of the rail 1, and a rear cover 17 having a hole integrated with the space 12 is attached to the rear end of the rail 1. Four bolt grooves 19 penetrating in the length direction are formed in the rail 1 of this embodiment (FIG. 14 except for the eighth embodiment). In some cases, the bolt groove 19 may be a through hole instead of a groove. 1, 2, 3, 4, 5, 9, 10, 11, 12, 1
3, the front cover 16 and the rear cover 17 are
Elongated bolt 10 and nut 11 through bolt groove 19
And bolted from both front and rear ends. The long bolt 10 and the nut 11 can reinforce and increase the strength of the rail 1. The front cover 16 and the rear cover 17 in FIGS.
To the rail 1. Formed on the rail 1,
The groove 5, the space 12, and the bolt groove 19 contribute to weight reduction and material cost reduction.

The guide 2 has a frame shape. The material is an iron plate in this embodiment, but is not particularly limited. The general appearance of the guide 2 generally corresponds to the shape of the rail 1, but may be any shape such as a triangle, a square, a pentagon, a hexagon, and a circle. Examples are excluded). The shaft 7 of the bearing 8 is fixed to a portion of the inner surface 6 of the guide 2 which corresponds to a direction perpendicular to the outside at a position corresponding to the groove 5 of the rail 1. The bearing 8 has a high-strength rail protection plate 4 whose peripheral surface 9 has a diameter opposite to that of the groove inner surface 3 of the rail 1.
Is slightly smaller than the distance and is set to a size that can be accommodated in the groove 5. In this embodiment, the diameter of the bearing 8 is 0.2 mm smaller than the distance between the opposing high-strength rail protection plates 4. The bearing 8 rotates about the shaft 7. Two or more bearings 8 are provided for each groove in the length direction. If the number of the bearings 8 for one groove 5 is two, the play is large, but it is sufficient depending on the purpose of use.
If the opposite sides are supported, the backlash is reduced, and it is possible to cope with a highly accurate use purpose.

FIG. 6 shows a slide device according to a first embodiment of the present invention, which comprises a rail 1 shown in FIG. 7 and a guide 2 shown in FIG. Four grooves 5 in the length direction are formed on the rail 1 having a round appearance, and four grooves 19 for bolts are formed in the length direction. The front cover part 16 and the rear cover part 17 are formed by bolts 18. Fixed. A rail protection plate 4 having high strength is mounted on the groove inner side surface 3 facing the groove 5. The groove 5 is provided on the inner surface of the guide 2 having a substantially
The shafts 7 of the two bearings 5 are provided in the lengthwise direction with respect to one groove 5 at a position corresponding to the outside at a right angle at a position corresponding to. Relatively suitable for applications where strength and high precision are not required. It can be used for an arm or the like.

FIG. 1 shows a slide device according to a second embodiment of the present invention, which comprises a rail 1 shown in FIG. 2 and a guide 2 shown in FIG. Four grooves 5 in the length direction are formed on the rod 1 having a substantially round rod shape, four grooves 19 for bolts are formed in the length direction, and the front cover part 16 and the rear cover part 17 are formed with bolt grooves. The bolt is fastened with a long bolt 10 and a nut 11 that pass through 19. A rail protection plate 4 having high strength is mounted on the groove inner side surface 3 facing the groove 5. A shaft 7 of two bearings 5 is provided on the inner surface of the guide 2 having a substantially rectangular shape at a portion corresponding to the groove 5 in a direction corresponding to the outside at right angles to the one groove 5 in the length direction. ing. It is installed horizontally, the guide 2 is fixed, and the rail 1 is made to move. FIG.
FIG. 4 shows a state where it is advanced. Relatively strong, but suitable for applications where high precision is not required. It can be used for an arm or the like.

FIG. 5 shows a slide device according to a third embodiment of the present invention, which has the same basic structure as the second embodiment.
The rail 1 is vertically erected, and the bottom is fixed to an installation table or the like (not shown) so that the guide 2 can move.
It can be used for lifts and the like.

FIG. 9 shows a slide device according to a fourth embodiment of the present invention. It comprises a rail 1 shown in FIG. 2 and a guide 2 shown in FIG. Four grooves 5 in the length direction are formed on the rod 1 having a substantially round rod shape, four grooves 19 for bolts are formed in the length direction, and the front cover part 16 and the rear cover part 17 are formed with bolt grooves. The bolt is fastened with a long bolt 10 and a nut 11 that pass through 19. A rail protection plate 4 having high strength is mounted on the groove inner side surface 3 facing the groove 5. The shaft 7 of the four bearings 5 is provided on the inner surface of the guide 2 having a substantially rectangular shape at a portion corresponding to the groove 5 in a direction perpendicular to the outside at a position corresponding to the groove 5 in the length direction with respect to one groove 5. ing. Since the peripheral side surfaces 9 of the bearings 8 on both sides and the peripheral side surface 9 of the bearings 8 on both inside sides support the high-strength rail protection plate 4 mounted on the opposing groove inner side surfaces 3 on the opposite sides, respectively. There is no rattling. Bearing 8 on both sides
If an eccentric shaft is used for one of the bearings 8 on both inner sides, adjustment according to the size of the play can be performed. Relatively suitable for applications where a large load is required and strength and high accuracy are required. In this case, one groove 1 has 4
Although the number of the bearings 8 is used, if three or more bearings 8 are provided in one groove 5, the backlash can be eliminated.

FIG. 10 shows a slide device according to a fifth embodiment of the present invention. Four grooves 5 in the length direction are formed on a rod 1 having a substantially round rod shape, and four grooves 1 for bolts are formed in the length direction.
9 is formed, and the long bolt 1 passes through the bolt groove 19.
0 and nut 11 are bolted from both front and rear ends.
A rail protection plate 4 having high strength is mounted on the groove inner side surface 3 facing the groove 5. On the inner surface of the guide 2 having a substantially rectangular shape, a portion corresponding to three of the four grooves 5 corresponding to the outer side at a right angle is two in the length direction with respect to one groove 5. The shaft 7 of the bearing 5 is provided. Relatively suitable for applications where the load is small and high accuracy is not required.

FIG. 11 shows a slide device according to a sixth embodiment of the present invention. 2, two rails 1 each having a round bar shape and having a substantially external appearance are bundled together. Six grooves 5 in the length direction are formed on the rail 1, eight groove 19 for the bolt are formed in the length direction, and a long bolt 10 and a nut 11 passing through the groove 19 for the bolt are used from both front and rear ends. Bolted. Groove 5
A rail protection plate 4 having high strength is mounted on the opposing groove inner side surfaces 3. On the inner surface of the guide 2 having a substantially rectangular shape, a portion corresponding to the above-mentioned six grooves 5 in a direction perpendicular to the outside corresponds to one groove 5 and two bearings 5 in the length direction. A shaft 7 is provided. Relatively large load, suitable for applications requiring high strength and high accuracy.

FIG. 12 shows a slide device according to a seventh embodiment of the present invention. The basic structure is the same as that of the second embodiment. A space 12 is formed on the rail 1 at one rear end thereof. The nut 14 is made of rubber 13 having elasticity.
Is provided on one end side after the space portion 12 of the rail 1 is opened via the. The nut 14 does not rotate even when the bolt 15 rotates. Although the shape of the nut 14 is not limited, the nut 14 of the present embodiment is formed with a rotation stop blade 20 as shown in FIG. In this embodiment, the nut 14 is sandwiched between two washers of rubber 13 from the front and rear, and is attached to the rail 1. The bolt 15 is rotated by the power of a motor (not shown). The bolt 15 is inserted from one end side of the guide 2 and provided so as to be located inside the guide 2. A bolt 15 is screwed through the nut 14. When the bolt 15 is rotated, the nut 14 moves. The rubber 13 sandwiching the nut 14 causes the gap between the rail 1 and the guide 2 to face, the play between the rail 1 and the guide 2 and the bolt 15.
Smooth sliding motion is possible to absorb the rotation deviation.

FIG. 14 shows a slide device according to an eighth embodiment of the present invention. The rail 1 has a right-side portion 23 in which a single longitudinal groove 5 is formed on the right side surface, and a substantially right side of the longitudinal direction groove 5 is formed near the center of the upper surface, and a length is formed on the left side surface. A left portion 24 in which a single groove 5 is formed in the direction and a substantially left side of the longitudinal groove 5 is formed near the center of the upper surface, and a rack gear 22 is formed on the upper surface sandwiched between these two from the left and right. It is formed integrally with the central portion 25. The rail 1 is installed on a mounting base 26. A rail protection plate 4 having high strength is mounted on the groove inner side surface 3 facing the groove 5. On the inner surface of the guide 2 having a substantially U-shaped frame shape, a portion corresponding to the groove 5 in a direction corresponding to the outer side at a right angle is a shaft of two bearings 5 in a length direction with respect to one groove 5. 7 are provided. A rotary gear 27 shown by a dotted line is provided at the upper center of the guide 2, and is rotated by the power of a motor (not shown). When the rack gear 22 and the rotary gear 27 mesh with each other and the rotary gear 27 rotates, the guide 2 can perform a sliding motion.

[0032]

According to the slide device of the present invention described above, the following effects can be obtained.

Since the bearing is accommodated in the groove of the rail, the size in the width direction can be reduced accordingly.

Since the bar-shaped rail has three or more longitudinal grooves and the guide is provided with bearings corresponding to these grooves, it can withstand loads from any direction. For example, when a load is applied from a direction perpendicular to one groove on one surface and no load is applied to a bearing in this groove, the bearing in a groove on another surface bears the load. For example, when a load is applied to a groove on any surface of a rail from an oblique direction that is not a right angle, the load is distributed and applied to bearings in a plurality of grooves on a plurality of surfaces.

The rail made of non-steel can be made of any material as long as it is non-steel and has a certain strength. Examples of the material of the rail include aluminum, plastic, and wood. A high-strength rail protection plate is installed on the inner surface of the rail groove, so even if the rail material is not steel, it will not wear or deform due to friction with the peripheral surface of the bearing. Absent. The high strength rail protection plate reinforces the rail strength. By selecting a material other than steel for the rail, it is possible to reduce the weight. Aluminum, plastic, wood, and the like have lower material costs than steel, and therefore lower manufacturing costs. The guide can be made of any material as long as it is strong enough to fix the bearing shaft and return.

By tightening bolts from both ends with three or more long bolts and nuts in the length direction of the rail, the bending strength of the rail is strengthened and the rail is hardly broken. For example, if a rail is likely to bend under a load from one direction,
Normally, the side to which the rail load is applied tends to expand, and the opposite side of the rail tries to shrink in reverse, but since it is bolted from both ends in the length direction with three or more bolt nuts,
Both are blocked by bolts. Non-steel rails such as aluminum, plastic, and wood have weaker bending strength than steel and are easily broken, but can be reinforced with bolts and nuts.

A slide device for rotating a bolt by power to move a nut has the nut mounted on a rail via elastic rubber, and a gap between the rail and the guide, a play between the rail and the guide, and a bolt. The rotation deviation can be absorbed by the rubber, and the sliding movement can be smoothly performed without imposing an excessive load by rotating the bolt.

A space opened at at least one end of the rail is provided inside the guide by inserting a bolt rotated by power from one end of the guide, and is screwed through a nut to enter and exit while rotating. Space. With this structure, a smart and compact slide device can be obtained.

The grooves, spaces and the like formed on the rail contribute to weight reduction and material cost reduction.

[Brief description of the drawings]

FIGS. 1A and 1B are cross-sectional views showing a second embodiment according to the present invention.

FIGS. 2A and 2B show a rail of the slide device according to the present invention, wherein FIG. 2A is a side view, FIG. 2B is a sectional view, and FIG.

3A and 3B show a second embodiment according to the present invention, wherein FIG. 3A is a side view and FIG. 3B is a cross-sectional view.

4A and 4B show a second embodiment according to the present invention, wherein FIG. 4A is a side view and FIG.

5A and 5B show a third embodiment according to the present invention, wherein FIG. 5A is a side view and FIG. 5B is a cross-sectional view.

FIGS. 6A and 6B are cross-sectional views showing a first embodiment according to the present invention.

7A and 7B show a rail of the slide device according to the present invention, wherein FIG. 7A is a side view, FIG. 7B is a sectional view, and FIG.

FIGS. 8A and 8B are cross-sectional views showing a guide of the slide device according to the present invention.

FIGS. 9A and 9B are cross-sectional views showing a fourth embodiment according to the present invention.

FIG. 10 is a sectional view showing a fifth embodiment according to the present invention.

FIG. 11 is a sectional view showing a sixth embodiment according to the present invention.

FIGS. 12A and 12B are cross-sectional views showing a seventh embodiment according to the present invention.

FIG. 13 shows a seventh embodiment according to the present invention, and (A)
(B) is a sectional view, and (C) is a front view showing a nut.

14A and 14B show an eighth embodiment according to the present invention, and FIG.
Is a sectional view, and (B) is a front view.

[Explanation of symbols]

 Reference Signs List 1 rail 2 guide 3 both side surfaces 4 rail protection plate having high strength 5 groove 6 inner surface 7 axis 8 bearing 9 peripheral side surface 10 bolt 11 nut 12 space 13 rubber 14 nut 15 bolt

Claims (3)

[Claims] 1. A slide device in which a rail (1) passes through the inside of a guide (2) and is slidable in a linear direction, so that at least a parallel inner surface (3) of the groove has high strength. A non-steel rod-shaped rail (1) having three or more longitudinal grooves (5) on which a rail protection plate (4) is mounted, and three or more grooves (5) of the rail (1) The shaft (7) is fixed to the inner surface (6) in the direction perpendicular to the outside at a position corresponding to the above, and the inner surface (3) of the groove of the rail (1) has a diameter
And two or more bearings (8) formed in the longitudinal direction each having a size slightly smaller than the distance between the opposed high-strength rail protection plates (4) and fit in the groove (5). A frame guide (2) for slidably supporting a rail protection plate (4) having a high strength on the inner surface (3) of the groove on a peripheral surface (9) of the bearing (8);
A slide device capable of responding to loads from any direction. 2. A slide device in which a rail (1) passes through the inside of a guide (2) and is slidable in a linear direction. The rail protection plate (4) has three or more longitudinal grooves (5) on which the rail protection plate (4) is mounted. A shaft (7) is fixed to a non-steel rod-shaped rail (1) that is fastened and an inner surface (6) at a right angle outward direction at a position corresponding to three or more grooves (5) of the rail (1). A bearing (8) whose diameter is slightly smaller than the distance of the opposed high-strength rail protection plate (4) on the groove inner surface (3) of the rail (1) and fits in the groove (5). ) Are provided two or more in the length direction, and the high strength of the groove inner surface (3) is improved. And a frame-shaped guide (2) that slidably supports the rail protection plate (4) having a peripheral side surface (9) of the bearing (8), and can cope with a load from any direction. apparatus. 3. The sliding device according to claim 1, wherein a space (12) having at least one open end is formed in the rail (1), and the rubber (1) has elasticity.
A nut (14) attached via 3) is provided at one end of the rail (1) where the space (12) is open so as not to rotate, and a bolt (15) that rotates by power is connected to the guide (2). It is inserted from one end side and provided so as to be positioned inside the guide (2), and has a structure in which a bolt (15) is screwed through the nut (14). The bolt (15) rotates to move the nut (14). This allows the rubber (13) to smoothly absorb the gap between the rail (1) and the guide (2) in the direction in which the rail (1) faces and the gap between the rail (1) and the guide (2) and the rotation of the bolt (15). A slide device capable of sliding motion.