JPH034003A - Oscillation unit using elastic contractor - Google Patents

Abstract

PURPOSE:To allow desirable oscillation by placing elastic contractors, which are expansion-transformed in dia. by pressurizing fluid and contracted in an axial direction, between a pair of fixed plate and movable plate, mutually spaced, and providing a supporting member which has one end given relative rotation to the movable plate, between both plates. CONSTITUTION:Elastic contractors 16, which are expansion-transformed in dia. by pressurizing fluid and contacted in an axial direction, are placed between a fixed plate 12 and a movable plate 14, mutually spaced. Then, a supporting member 40, which has one end fixed to the fixed plate 12 and the other end attached to the movable plate 14 in a relative rotation allowable manner, is joined thereto. As a result, the feed and discharge of the pressurizing fluid to each elastic contractor 16 are performed as necessary to allow the desirable oscillation of the movable plate 14 and the enhancement of rigidity, resulting in less effect of even minute oscillation on the movable plate 14.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a rocking device using a so-called air bag type elastic contracting body that expands and deforms in diameter by supplying pressurized fluid and generates a contracting force in the axial direction. This is related to the dynamic unit.

(Prior art) Experience has shown that it is necessary to tilt work tables, lighting equipment, and even measuring instruments as necessary to perform work efficiently and provide useful contrast. Also known as

For this reason, in the prior art, the workbench is supported, for example, via a suitable link mechanism, and the crank that constitutes the link mechanism is translated using an electric motor connected via a speed reduction mechanism. Or, it was rotated to swing the lever and, by extension, the workbench connected to it.

Another device uses a hydraulic motor instead of an electric motor, or even uses a hydraulic cylinder directly connected to the workbench to tilt the workbench.

(Problems to be Solved by the Invention) However, conventional devices, such as those using electric motors, require a speed reduction mechanism, which means that they are heavy and occupy a large space, and on the other hand, sparks are not generated. Since this is unavoidable, there is also the problem that its use in explosive atmospheres is restricted.

On the other hand, with hydraulic motors or hydraulic cylinders, it is difficult to completely prevent leakage of hydraulic oil, so contamination of the surrounding area is unavoidable, and they must be used in a clean working environment. In addition, the temperature of the hydraulic oil,
There are many problems that need to be solved from a management perspective, such as the need to carefully manage cleanliness.

The present invention has been made in view of these problems, and its purpose is to provide a swing unit that is easy to handle, has a small, lightweight, and clean structure and is free from environmental pollution. do.

(Means for Achieving the Object) In order to achieve this object, the swinging unit of the present invention includes a pair of fixed plates and a movable plate arranged apart from each other, and the fixed plate and the movable plate. At least two parts are disposed between each other, one end is fixed to the fixed plate, and the other end is rotatably connected to the movable plate, and expands and deforms in diameter when supplied with pressurized fluid to generate a contraction force in the axial direction. A set of elastic contraction bodies in a book,
The support member has one end fixed to the fixed plate and the other end rotatably attached to the movable plate.

(Function) According to this swing unit, by further supplying the pressurized fluid to any of the elastic contracting bodies to which the initial setting pressure is applied,
While the elastic contraction body contracts, the other elastic contraction bodies are maintained in the initial state, so the movable plate is inclined toward the contracted elastic contraction bodies. In addition, since the support member whose one end is fixed to the fixed plate swingably supports the movable plate at the other end, by appropriately supplying and discharging pressurized fluid to each elastic contractile body, the movable plate can be moved as desired. It is possible to impart a rocking motion of.

Moreover, since the fixed plate and the movable plate are connected to each other via the support member, they have sufficient rigidity against lateral forces acting on these plate members, but the fixed plate and the movable plate have Since the vibrations acting in the direction shown in FIG.

(Embodiments) Hereinafter, preferred embodiments of the swing unit of the present invention will be described in detail with reference to the drawings.

FIGS. 1(a) and 1(b) are a perspective view and an exploded view schematically showing a swing unit 10 according to the present invention, in which a pair of disk-shaped swing units made of rigid metal or engineering plastic are shown. The fixed plate 12 and the movable plate 14 are arranged substantially parallel to each other and spaced apart from each other, and the plate members 12 and 1
4, a set of three elastic contracting bodies 16 are arranged parallel to each other and spaced apart from each other.

Here, as is clear from FIG. 2, which shows a part of the elastic contraction body in cross section, the elastic contraction body side 6 has an outer periphery of a tubular body 18 made of rubber or synthetic resin that can hold the pressurized fluid without transmitting it. , organic or inorganic high tensile strength fibers, e.g.
In addition to covering it with a reinforcing structure 20 that is a braided bundle of aromatic polyamide fibers (Kevlar: trade name), twisted bundles of filaments such as ultrafine metal wires, or non-twisted bundles,
The openings at both ends of the tubular body 18 and the reinforcing structure 20 are closed with closing members 22, and further sealed from the outside using a caulking ring 24 to prevent these members from falling out. It is.

Then, as the pressurized fluid flows into the internal space 28 of the reinforcing structure 20 through the fitting 26 installed in the supply/discharge hole formed in at least one of the closing members, the reinforcing structure 20 changes from the initial braid angle θ to the so-called stationary state. The expansion to reach the angle (54°44'), that is, the expansion diameter of the tubular body 18 due to the pantograph movement, and the resulting contraction in the axial direction are brought about, and the energy possessed by the pressurized fluid is efficiently converted into kinetic energy. can do.

In this embodiment, a threaded hole 22a is formed in the end face of one of the closing members 22 of the elastic contracting bodies 16, that is, the closing member in which the feeding hole is formed, as shown in FIG. 1(a). As shown, the elastic contractile body 16 is fixed by inserting a set screw into the through hole 30 that opens in the accommodation recess 29 formed in the fixing plate 12 corresponding to the closing member and screwing into the screw hole. Can be fixed to the board. Of course, the fixed plate 12 has
Depending on the number of elastic contraction bodies used, receiving recesses 29 and associated through-holes 30 are formed.

On the other hand, as clearly shown in FIG. 1
A support pin 36 attached to a bracket 34 is inserted through the attachment fixed to the elastic member 4 to rotatably support the elastic contracting body 16. In addition, in this embodiment, the closing member 2
In order to prevent the support pin 36 from falling out of the through hole 22b formed in the bracket 2, a locking pin 38 is attached to each protruding portion of the support pin 36 passing through the bracket 34.

On the other hand, a rod-shaped support member 40 is disposed between the fixed plate 12 and the movable plate 14, and male threaded portions are formed at both ends thereof, and one end thereof is connected to a female threaded portion provided on the fixed plate 12. By screwing together, it stands upright and is integrally fixed to the fixing plate 12, and the other end is screwed into a female thread provided in the ball portion of the spherical bearing 42.

Therefore, by fixing the socket portion of the spherical bearing 42 to the movable plate 14 using a known suitable fastening means, for example, a fixing screw as shown in FIG. A rocking movement can be performed about the support member. In addition, in FIG. 1(b), the elastic contractile body 16 is omitted for easy understanding.

Next, the operation of the device of the present invention will be explained.

Now, when pressurized fluid, for example, compressed air, is appropriately supplied to or discharged from the internal space 28 through the respective fintings 26 attached to the respective elastic contraction bodies, the pressurized fluid exceeds the initial set pressure. While the applied elastic contractile body contracts in its axial direction, it is maintained at an initial set pressure;
Alternatively, the elastic contractile body that has been brought about a decrease in pressure will be expanded due to its initial state or its restoring force.
The movable plate 14 performs a rocking motion according to the pressure difference between the pressurized fluids applied to each elastic contractile body.

Such a supply operation of pressurized fluid is accomplished in accordance with the prior art by connecting a line connected to an operating pressure source such as an air compressor and provided with known valve means and regulating the operation of said valve means. It can be easily done using

Further, for example, by controlling the valve means based on detection signals from a plurality of sensors attached to the movable plate and detecting the degree of inclination thereof, and controlling the amount of pressurized fluid supplied to each elastic contractile body, The structure may be such that the inclination of the movable plate is adjusted, and the amount of pressurized fluid supplied to and discharged from each elastic contraction body is adjusted in accordance with each signal from the detection means that detects the amount of contraction of each elastic contraction body. A similar oscillating motion can be applied to the movable plate even if the movable plate is configured to do so.

FIG. 3 is a diagram showing another embodiment of the unit of the present invention. In this embodiment, a plate-shaped member is used as the support member, and the end thereof facing the movable plate 14 teeth,
It has a semicircular cross-sectional shape.

On the other hand, on the end surface of the movable plate 14 facing the support member 40 having an end portion having a semicircular cross-sectional shape, a support member 40 is provided.
An engagement groove 42 having a conical cross-section is formed, extending along the width direction. The method for attaching each elastic contractile body 16 to the fixed plate 12 and the movable plate 14 is the same as that in the embodiment shown in FIG. 1, so the explanation thereof will be omitted here for the sake of brevity.

According to this device, by appropriately supplying pressurized fluid to each elastic contractile body, the movable plate 14 can be rotated approximately around the engagement groove formed in the movable plate 14 as the rotation axis. It can be given to

Note that in any of the devices shown in the above-mentioned embodiments, the rigidity of the device can be adjusted freely by adjusting the rigidity of the elastic contracting body in accordance with the magnitude of the initial setting pressure applied to the elastic contracting body. Since it can be changed, the rigidity can be adjusted according to the object to which the device is applied.

Of course, the present invention is not limited to the embodiments described above, and the number of elastic contracting bodies may be increased or decreased as necessary, and the shapes and materials of the fixed plate and movable plate may be variously changed. and may be modified in various ways within the scope of the claims.

(Effects of the Invention) Thus, the device of the present invention uses a so-called air bag type elastic contractible body as an actuator, which can efficiently convert the mechanical energy of a pressurized fluid into kinetic energy.
By controlling the supply and discharge of pressurized fluid to each elastic contraction body, a desired rocking motion is imparted to the movable plate, and by adjusting the initial setting pressure that determines the rigidity of the elastic contraction bodies, the device is controlled. Since the rigidity can be changed freely, the range of application is wide, and it is lighter than known devices.
It does not contaminate the working environment, is easy to handle, and has many advantages such as being able to be used even in vibration environments because the elastic contracting body also functions as a damper. There is.

[Brief explanation of drawings]

FIG. 1(a) is a perspective view schematically showing the swing unit of the present invention, FIG. 1(b) is a front view showing the device shown in FIG. 1(a) with some parts omitted, FIG. 1(c) is an explanatory diagram showing an enlarged view of how the elastic contracting body is connected to the movable plate, and FIG. 2 is an elastic contracting body suitable for application to the unit shown in FIG. 1(a). FIG. 3 is a partially cutaway perspective view showing another embodiment of the present invention with some parts omitted. 10 - Swing unit 12 - Fixed plate 14 - Movable plate 16 - Elastic contraction body 18 -
- Tubular body 20 - Reinforcement structure 22 - Closing member 30 - Through hole 32 - Set screw 34 - Mounted on bracket 40 - Support member 42 - Engagement groove Fig. 2

Claims (1)

[Claims] 1. A pair of fixed plates and a movable plate arranged apart from each other, and a device arranged between the fixed plate and the movable plate, one end of which is fixed to the fixed plate and the other end rotated by the movable plate. a set of at least two elastic contracting bodies that are operably connected and expand and deform in diameter when supplied with pressurized fluid to generate a contractile force in the axial direction;
1. A swing unit using an elastic contracting body, comprising a support member having one end fixed to a fixed plate and the other end rotatably attached to a movable plate.