JPS6229650B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves forming a casing by combining plates with appropriate thickness and having several types of required cutout holes, and incorporating a plurality of rollers equally distributed in a space formed inside the casing. The present invention relates to a slide bearing capable of supporting a shaft fitted into a central guide hole so as to be slidable in the axial direction or slidably relative to the shaft using internal rollers.

Conventionally, a shaft or an article attached to a shaft is
Various types of reciprocating rolling bearings for slidably supporting the motor in the axial direction have already been developed and put into practical use. However,
In order to maintain a constant relationship between the shaft and the rotor of the bearing, these known methods include forming a groove on the shaft side into which the rotor fits, or conversely, forming a protrusion on the circumferential surface of the shaft. It uses a type of spline shaft that requires a special shaft with a A sleeve-like design with a special internal structure and a mounting seat is used, which makes it expensive. Another type, which does not use the spline shaft type described above, is one in which three small radial bearings are equally distributed through a complicated retainer in the integrally molded main body (for example, Utility Model Publication No. 41-13370 etc.), which requires improvement, such as being dimensionally specific and structurally complex, making it expensive. In both the former and latter cases, the rotor installed inside the main body uses steel balls or radial ball bearings, and the corresponding shaft is heat-treated to increase durability. There is a need to improve the overall accuracy, and of course, a corresponding means is required for use, which significantly increases the manufacturing cost.

The present invention solves these problems and provides a highly mass-producible, multi-purpose slide that has an extremely simple structure and can operate smoothly without the need for machining that requires special precision, especially on the shaft. The company aims to provide bearings.

In the present invention, a main body is formed by laminating plates of appropriate thickness in which three types of punched holes are formed in predetermined dimensions in the axial direction of a shaft that guides and supports them, and formed around the central guide hole of the main body. The rotor is freely disposed in the direction of the axis that guides and supports the rollers in a plurality of spaces, and the inner holes of the plurality of hollow studs to which all the laminated plates are fastened and fixed can be used as mounting holes. be.

Further, in the present invention, a combination of laminated plates can be appropriately selected, and rotor pairs can be arranged in double rows to easily construct a rotor of any length.

In the present invention, a synthetic resin roller or a rolling bearing is used as the rotor, and in either case, the support shaft is held in a holding part formed with a hole inside the rotating roller support laminated plate (center laminated plate). The rotor was rotatably supported via a bush.

Furthermore, when the bearing of the present invention is to be fitted to a target part, it is fitted into the mounting hole with reference to the peripheral surfaces of both outer plates, and fixed to a separate mounting plate using the fastening hollow rivet holes. The outer periphery of the guiding and supporting shaft has a circular or polygonal cross section that comes into contact with the multiple rotors installed. ,
Alternatively, any material such as a partially cut circular cross section can be used.

Below, the present invention will be described in detail with reference to the drawings for one embodiment. The bearing B shown in FIG. 1 and FIG. A plurality of plates 2 and 3 having a plurality of thicknesses and having two types of holes formed therein are combined and integrally laminated and connected using a plurality of fastening sleeves 4,
Alternatively, a hollow rivet 5 is inserted and fastened in place of the sleeve 4, and a bearing body 10 is formed by both outer plates 1, 1' and the laminated plates 2, 3, and a roller 7 is inserted into a space 6 formed inside. A plurality of rollers are equally distributed radially from the center of the central guide hole 8 so that their rotating surfaces are oriented in the centripetal direction, and the shaft portion of the roller 7 is held in a recess via a bush 9 so that the roller 7 can freely rotate.

Each plate constituting the main body 10 can be made of metal or synthetic resin, and an example of its shape is shown in FIG. A guide hole is provided at the center with a required diameter, and a fastening hole 21 is provided at a position divided into three equal parts with the center on the circumference defined by an appropriate radius. Fourth
The figure shows plate 3 for central lamination, with an outer diameter of
D' is a slightly smaller diameter than the outer diameter D of the outer plate 1, and the guide hole 8 in the center is equal to that of the outer plate, and the fastening holes 31 are also the same. A rectangular notch 32 of the required length is formed radially from the center at the equally divided position with an appropriate width W, and each is symmetrical with respect to the rectangular notch 32 in a direction perpendicular to the center and passing through a point of the required dimension. Square notches 33, 33 with stepped tips are formed, and cross-shaped notches 34 are formed radially from the central guide hole 8 in three directions. Note that the width of the horizontal square notches 33, 33 of each cross-shaped notch 34 is an integral multiple of the thickness of the laminated plate 3. Incidentally, in this embodiment, the plate thickness is 1 mm, and the width of the square cuts 33, 33 is 3 mm. What is shown in FIG. 5 is a space forming laminated plate 2 in which the outer diameter D' is the same as that of the central laminated plate 3, the central guide hole 8 and the fastening hole 21 are also the same as that of the outer plate 1, and The dimensions of the rectangular notches 22 formed radially into three equal parts from the central guide hole 8 are also made equal to those of the central lamination plate 3. Note that each board 1,
It is preferable that plates 2 and 3 have the same thickness. Further, a notch 35 is provided at an appropriate position on the outer periphery of the central lamination plate 3, and this may be omitted depending on the case.

Next, when assembling the respective lamination plates, three center lamination plates 3 and two space forming lamination plates 2 are cut into each rectangular notch 32 at the front and back of the center lamination plate combination. , 22 and the fastening holes 31, 21 are aligned and stacked. In this way, a longitudinal space 6 is formed by the rectangular long notches 32, 22 in three directions from the central guide hole 8, and a longitudinal space 6 is formed in the center thereof. Further, rectangular depressions 6' which are perpendicular to each other are formed symmetrically by the laterally symmetrical rectangular notches 33, 33 by the three layers of central lamination plates. The rectangular recesses 6', 6' are constructed so that the cross section perpendicular to the axial direction thereof is square, and a bushing 9 that exactly fits is fitted into the rectangular recess 6'. The support shaft 7' of the roller 7 is rotatably and accurately supported in the rectangular recesses 6', 6', and the rollers 7 are respectively disposed within the space 6. The roller 7 is made of synthetic resin, or in some cases uses a small rolling bearing.

With this structure, in order to support this on the shaft S, the shaft S must be inserted into the central guide hole 8, and the circumferential surface of each roller 7 disposed inside the main body 10 will be aligned with the circumferential surface of the shaft S. The bearing B can be in equal contact with the shaft S, or the shaft S can be slid relatively smoothly in the axial direction with respect to the bearing B. The support shaft 7' for the roller 7 is supported by the bush 9 inside the rectangular recess 6' formed by the laminated plates as described above, so the structure is formed by laminating the plates. Nevertheless, accuracy is expected.

Then, to attach the bearing B to the object, use the inside of the sleeve or hollow rivet 5 as a mounting hole and tighten the bolt 12 to the mounting plate 11.
This mounting plate 11 is fixed to the object with bolts or the like, and when fitting it into the hole of the object, the outer diameter of both laminated outer plates 1, 1' of the main body 10 must be precisely finished. This allows the outer diameter part to fit into the mounting hole and hold it. Therefore, it is convenient to form a cylindrical shape with the outer peripheral surface of this outer plate as the standard outer diameter for fitting and mounting. It is.
Furthermore, in order to fit and fix the object into the so-called housing at the target location without using a mounting plate, a contact plate with an outer diameter slightly larger than the outside diameter of one outer plate 1 is placed along one side of the outer plate 1 as shown in Fig. 6. 13 is fixed with bolts 12 through the mounting holes 14, and the plate 13 is in contact with the end face of the insertion hole A, and a notch is formed in the central laminated plate 3 on the outer peripheral surface of the main body 10. 3
A set screw 15 is screwed into the housing H from the outside so that the tip thereof is engaged with the recess 5. (However, it is not limited to this.) Although the above explanation was about a single type, by using three types of plates 1, 2, and 3 as described above and skillfully combining them, For example, the seventh
As shown in the figure, a plurality of space forming laminated plates 2
, three central laminated plates 3 are attached to the roller fitting part.
and then at least 5 double-sided laminated plates 2
Then, three central laminated plates 3 are stacked one after another in the axial direction, followed by a plurality of space forming laminated plates 2, and each space rectangular recess formed in each central laminated plate is formed. nibutsuyu 9
A supporting shaft 7 is fitted and supported by the supporting shaft 7, and outer plates 1 and 1' are respectively attached to the outermost part of the laminated plates.
If you fit the fastening sleeve 4 of the length corresponding to the total thickness into each fastening hole 21, 31 or fasten it with the space rivet 5, it will be possible to create a structure with rollers arranged in double rows in the axial direction. can get.

In addition to the circular outer shape of each of the laminated plates that make up this main body, they can also be square or isogonal, and by setting the outer circumferential surfaces of both outer plates to exact dimensions, you can use this as a reference. Also, when fitting into a groove or hole, the connecting surface can be reduced and accurate installation can be easily performed.

Furthermore, a double-row type can be constructed by connecting and fixing two of the above embodiments together with a suitable spacer interposed between them, if necessary.

Furthermore, as shown in FIG. 8, if a shaft S' having a hexagonal cross section is inserted into the central guide part and each roller 7 is made to come into contact with three surfaces of the shaft S', a bearing can be formed with respect to the shaft S'. B can move freely in the axial direction, and rotates the shaft S' to rotate the bearing body 1.
0' can also rotate, resulting in a bearing that can easily perform both sliding and rotational movements. Alternatively, if the bearing B is fixed and installed in the normal state, the rollers 7 are in contact with each of the three equal parts, so that the axis S' can reciprocate accurately and smoothly in a stable state. .

In addition, this requires a part of a special structure, but for example, one or two of the three rollers are made to have a larger outer diameter than the others, and of course, a rectangular part of the space into which this roller 7a can be fitted is attached to it. By making it suitable, it is also possible to make a bearing that can slide and rotate at the same time by fitting it with a part of the shaft S'' that has been cut flat in the axial direction as shown in Figure 9. Yes, of course stable reciprocating motion is possible.

In addition, by making partial changes depending on the application and other needs, the slide bearing can be used as a slide-based bearing that can operate effectively with high precision without requiring special machining accuracy on the shaft side. More effective results can be obtained by selectively using materials with high lubricity for the rollers and their supporting bearings.

As described above, according to the present invention, at least three types of plate materials having a predetermined thickness and punched holes in a desired shape are formed, and the required number of plates are formed so that each plate has a role to play. By stacking them together in the axial direction of the supporting shafts and fastening them together, it is possible to obtain a roller that is rotatably held and installed inside, which improves the machining accuracy of the notch hole in the center plate. By increasing the height, the dimensional accuracy of shaft holding by rollers could be easily increased by holding the bushings in square recesses, and it became possible to obtain slide bearings that could move smoothly. It can be used without any special processing such as hardening, which makes the installation process very simple and easy to work with, and therefore the parts where it is used are relatively small, mainly automatic machines etc. It can be used to great effect in devices that require irregular movements under light loads. Furthermore, since the bearing of the present invention can be constructed by combining a large number of plates with a predetermined shape, it can be easily mass-produced by punching metal plates, for example, and it can also be easily manufactured in special shapes by combining various combinations as needed. Its industrial effects are enormous, such as being able to provide inexpensive products in terms of productivity.

Note that when installing the bearing, it is also possible to use a method in which a bolt is previously inserted into the fastening hole and the bolt is used for installation.

[Brief explanation of the drawing]

The drawings show an embodiment of the bearing of the present invention, in which Fig. 1 is a longitudinal sectional view of one specific example, Fig. 2 is a partially cutaway sectional view of Fig. 1, and Fig. 3 shows the outer plate. Figure 4 shows the center lamination plate, Figure 5 shows the both side lamination plates, Figure 6 shows another example, and Figure 7 shows a double row bearing. FIG. 8 is a partially cutaway front view of a shaft having an irregular shape, and FIG. 9 is a front view of another example. 1, 1'... Outer plate, 2... Space forming plate, 3... Center lamination plate, 4... Fastening sleeve, 5... Hollow rivet, 6... Space, 6'... Square recess, 7, 7a... Rotation Child, 7'... Support shaft, 8... Center guide hole, 9... Bush, 10... Main body, 11... Mounting plate, 13... Back plate, 15... Push bolt, 14... Mounting hole, 21, 3
1... Fastening hole, 22, 32... Square long notch, 33... Square notch, 34... Cross-shaped notch, 35... Notch,
S, S′, S″…axis.

Claims (1)

[Claims] 1. A sliding bearing that is used by being fitted onto a shaft, and the main body is formed by laminating at least three types of plates in a predetermined arrangement in the axial direction of the supported shaft, and each of these plates has a central A guide hole and a plurality of fastening holes arranged around the guide hole are equally provided, and the central laminated plate 3 arranged in the center of the laminated plates has a corner for receiving the roller from the center of the central guide hole 8 toward the outer periphery. Long notch 32 and square notches 33 on both sides in the middle
A plurality of cross-shaped cutouts 34 symmetrically formed are provided, and the space-forming laminate 2 disposed before and after the central laminate 3 has a rectangular long cutout of the central laminate 3. A rectangular notch 22 that matches the notch is provided, and the outermost plate 1 has a standard outer diameter slightly larger than the other plates and does not have a notch. They are integrally fastened together using a hollow fastening body at a common fastening hole location, and space portions 6 formed radially from the center of the central guide hole 8 by the rectangular notches of the respective plates inside the main body are provided with respective holes. The roller 7 for supporting the shaft is inserted into the square cut 33 of the central laminated plate 3.
A slide bearing characterized in that it is supported by a support shaft 7' held by an internal bearing bush 9 in a rectangular depression 6' formed by a space-forming laminate 2 on the front and rear thereof.