JP2002321183A - Chuck device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a handling mechanism that is compact and easy to control for handling small sized optical disks, magnetic disks and other disk elements. SOLUTION: A chuck device has a holder that a base element and an arm element are engaged in L shape, a fixing chuck element attached to the base element of the holder, and a mobile chuck element that is movable along a guide element attached to the arm element. The chuck device has a pair of spring elements that are preloaded elastically to make move the movable chuck element along the guide element. At least one piece of the spring elements is made of a shape memory alloy spring and there is a control means for the shape memory alloy spring by heating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device chuck device, and more particularly to a chuck device for holding a disk member having a central hole, such as a small-diameter optical disk or magnetic disk. .

[0002]

2. Description of the Related Art Conventionally, in a process of moving a disk member having a hole at a central portion of an optical disk, a magnetic disk, or the like, it is necessary to prevent scratches and dirt from adhering to a film formation area (recording area) of the optical disk or a magnetic disk. To prevent this, a hole at the center of the disk member or the outer peripheral portion is gripped. This is not limited to optical disks and magnetic disks, but is similarly performed for various disk-shaped recording media that are vulnerable to scratches and dirt. Further, in these disk manufacturing processes, there are generally many times such as occasions of handling the disk, such as transporting the disk between the processes and delivery of the disk in the manufacturing apparatus.

[0003] Conventional disk handling is a method of mechanically clamping an inner hole or an outer periphery of a disk member.

For example, FIG. 20 of the drawings shows an example of such a conventional method for handling the inner hole of a disk member.

As shown in the figure, a conventional chuck device 100 includes a fixed chuck member 104 fixed to a base member 102 of a holder 101 and an air actuator 106 mounted on an arm member 103 of the holder 101. And a movable chuck member 105 that is operated in response to the above. An air actuator 106 is actuated by air supplied and exhausted through an intake pipe 107 and an exhaust pipe 108 to operate the actuator 106. The movable chuck member 105 is moved up and down along the guide member 110, and the disk member 111 is clamped and clamped by the fixed chuck member 104 and the movable chuck member 105 inserted into the inner hole 112 of the disk member 111. Moving in the direction

[0006] Such a conventional handling system uses the chuck device 100 having the above-described structure. The opening and closing movement of the pair of chuck members 104 and 105 by driving the air actuator 106 causes the inner hole of the disk member 111 to move. The portion 112 is clamped. Further, instead of the air actuator 106, there is one using a motor and a direct acting screw. In addition,
In FIG. 20, such a chuck device 100 is schematically illustrated. In these mechanisms, since the air actuator 106 is used as a driving source,
The air actuator 106 requires piping such as an intake pipe 107 and an exhaust pipe 108 for intake and exhaust, and a motor requires a direct-acting mechanism. There are problems such as the increase.

[0007]

In particular, in recent years, disk members such as optical disks and magnetic disks have become smaller in diameter, and with such a reduction in diameter, a handling mechanism for holding the disk members has become smaller. There is a demand for conversion. On the other hand, in a method of handling by an air actuator or a motor drive like a conventional handling mechanism, a mechanism of a driving unit is complicated, piping such as intake and exhaust is required, and air control is performed. However, there is a problem that the handling portion becomes large for a disk member having a small diameter.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a small and easy-to-control disk member for handling a disk member such as an optical disk or a magnetic disk having a small diameter in order to solve such a conventional problem. An object of the present invention is to provide a chuck device which is a handling mechanism.

[0009]

In order to achieve the above object, a chuck device according to the present invention comprises a holder in which a base member and an arm member are connected in an L-shape, and a fixing member attached to the base member of the holder. In a chuck device having a chuck member and a movable chuck member movably provided along a guide member attached to the arm member, the movable chuck member is elastically biased to move along the guide member. It has a pair of spring members, wherein at least one of the spring members is formed of a shape memory alloy spring, and has control means for controlling heating of the shape memory alloy spring.

Further, in the chuck device of the present invention, the control means has a power supply and a switch, and controls heating of the shape memory alloy spring.

Further, in the chuck device of the present invention, there is provided a holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member mounted on the base member of the holder, and a guide member mounted on the arm member. A movable chuck member movably provided along the guide member, a pair of shape memory alloy springs elastically biasing the movable chuck member to move along the guide member, and the shape memory alloy spring And a control means for controlling the heating of the substrate.

Further, in the chuck device of the present invention, the control means has a power supply and a switch.

[0013] A chuck device according to the present invention includes a holder having a base member and an arm member connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a guide member attached to the arm member. A movable chuck member movably provided in the chuck device, a pair of shape memory alloy springs elastically biased to move the movable chuck member along the guide member,
Control means for heating and controlling the shape memory alloy spring,
The movable chuck member is elastically biased by the pair of shape memory alloy springs along the guide member, and is elastically displaceable by another spring member on the openable member along another guide member. And a chuck member mounted on the base member.

Further, in the chuck device of the present invention, the control means has a power supply and a switch.

Further, in the chuck device of the present invention, a holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a guide member attached to the arm member A movable chuck member movably provided along the guide member, a pair of shape memory alloy springs elastically biasing the movable chuck member to move along the guide member, and the shape memory alloy spring Means for controlling the heating of the fixed chuck member, the fixed chuck member is formed by connecting a strong root member and a flexible tip member in a cantilever shape, the movable chuck member along the guide member A rigid base member elastically biased by the pair of shape memory alloy springs, and a flexible tip member supported in a cantilever manner on the base member. And said that you are.

Further, in the chuck device of the present invention, the control means has a power supply and a switch.

The chuck device of the present invention is provided with a holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and provided opposite to the fixed chuck member. In a chuck device having a movable chuck member, an opening / closing member movably provided along a guide member attached to the arm member, and a pair of elastically urging the opening / closing member to move along the guide member. A shape memory alloy spring, and means for selectively controlling heating of the shape memory alloy spring, wherein the movable chuck member is held at a predetermined distance from the fixed chuck member, and The movable chuck member is pressed and displaced.

Further, in the chuck device according to the present invention, the fixed chuck member and the movable chuck member are provided at intervals by a spacer member, and each have a strong root member and a flexible tip member in a cantilever shape. And is formed by being connected to

Further, in the chuck device of the present invention, the opening / closing member has a projecting portion for pressing the movable chuck member, and the fixed chuck member has a stopper member for limiting elastic displacement of the movable chuck member. It is characterized by.

Further, in the chuck device of the present invention, the control means has a power supply and a switch.

Other objects, features and advantages of the present invention will be apparent from the following detailed description of several embodiments of the chuck apparatus of the present invention, as illustrated in the accompanying drawings.

[0022]

(Embodiment 1) FIGS. 1 to 4 show Embodiment 1 of a chuck device for a disk member according to the present invention.
FIG. 1 is a schematic side view showing the structure of a chuck device of the present invention, FIGS. 2 to 4 are operation explanatory diagrams, and FIG. 2 shows a chuck member in a hole of a disk member. FIG. 3 is a view showing a state before insertion, FIG. 3 is a view showing a state in which a chuck member is inserted into a disk member and holding the disk member, and FIG. 4 is a view showing a state in which the chuck member is pulled out from a hole of the disk member. is there.

As shown in FIGS. 1 to 4, the chuck device 1 of the present invention has a holder 2 in which a base member 3 and an arm member 4 are connected in an L-shape, and is attached to the base member 3 of the holder 2. A fixed chuck member 5, a movable chuck member 6 movably provided along guide members 7, 8 attached to the arm member 4, and a movable chuck member 6 for moving the movable chuck member 6 along the guide members 7, 8. And a pair of elastic members 9 and 10, which are elastically biased.
At least one of the springs 10 is formed of a shape memory alloy spring, and a control means 11 for controlling heating of the shape memory alloy spring is provided. Such a control means 11 has a power supply 12 and a switch 14. In this embodiment, the spring member 9 is a shape memory alloy spring and the spring member 10
Is a coil spring.

In such a chuck device 1 of the present invention, the holder 2 is formed by connecting the base member 3 and the arm member 4 in an L-shape at substantially right angles, and the fixed chuck member 5 is provided at the upper end of the base member 3. The movable chuck member 6 is mounted on the guide members 7 and 8 which are fixed and erected from the arm member 4 so as to be slidable in the vertical direction, and a spring member 9 such as a shape memory alloy spring is mounted on the upper portion of the guide member 8. A spring member 10 such as a coil spring is mounted below the guide member 8 so that the movable chuck member 6 can be moved in the vertical direction by the pair of spring members 9 and 10 provided opposite to each other. Is elastically biased.

In the illustrated embodiment, the upper portion of the guide member 8 is interrupted and is not connected to the fixing chuck member 5, so that the guide member 8 is not affected by expansion due to heating of the shape memory alloy spring. The configuration is not particularly limited, and any other appropriate shape or configuration can be used to achieve the same effect.

The spring member 9 made of a shape memory alloy spring is connected to a control means 11 as a control circuit having a power supply 12 and a switch 14. When the switch 14 is turned on, the spring member 9 is energized and heated. Thereby, the movable chuck member 6 can be moved along the guide members 7 and 8.

The operation of the thus constructed chuck device of the present invention will be described below.

In the chuck device 1 according to the first embodiment of the present invention, in an initial state in which the switch 14 shown in FIG. 4 is turned off (OFF), as shown in FIG. The spring member 9 of the shape memory alloy spring is extended to a deformation region beyond the elastic region. Then, in this state, when the switch 14 is turned on to turn on (ON) so as to energize the spring member 9 of the shape memory alloy spring, the spring member 9 of the shape memory alloy spring is heated by the energization and the restoring force increases. As shown in FIG. 2, the movable chuck member 6 operates in a direction in which the distance between the fixed chuck member 5 and the movable chuck member 6 becomes smaller.

When the distance between the fixed chuck member 5 and the movable chuck member 6 is narrower and smaller than the diameter of the hole 17 of the disk member 16, the fixed chuck member 5 and the movable chuck member 6 are connected to the disk member 16. Into the hole 17. Then, the switch 14 is turned off to turn it off. As a result, the spring member 9 of the shape memory alloy spring is cooled by the heat radiation and the tensile force is reduced. Therefore, the spring member 9 of the coil spring is pulled by the spring member 10 of the coil spring to return to the initial state (FIG. 4), as shown in FIG. As described above, the movable chuck member 6 operates in the direction in which the distance between the fixed chuck member 5 and the movable chuck member 6 is widened.
6, the disc 16 can be held firmly by the spring force of the spring member 10,
The disk member 16 can be transported to a predetermined location by moving the holder 2 together. Then, to release the disk member 16 again, the switch 14 may be turned on, whereby the distance between the fixed chuck member 5 and the movable chuck member 6 becomes smaller than the diameter of the hole 17 of the disk member 16 and The disk member 16 can be released because the disk member 16 can be easily pulled out from the hole 17.

Therefore, according to the above configuration, the switch 1
4, the fixed chuck member 5 and the movable chuck member 6 can be opened and closed by turning on and off, and the disk member 16 can be held by the spring force without continuously applying power.
In addition, since no air actuator or the like is arranged near the chuck device 1 and the device can be configured with a simple structure and simple wiring, the chuck device 1 can be downsized.

As described above, in the chuck device 1 of the present invention, the fixed chuck member 5 and the movable chuck member 6
The fixed chuck member 5 and the movable chuck member 6 are inserted into the holes 17 of the disk member 16 to be supported by being mounted on the base member 3 of the holder 2 in a cantilever manner. Has become.

(Embodiment 2) FIGS. 5 to 12 are schematic views for illustrating and explaining Embodiment 2 of a disk member chucking device of the present invention. FIG. 5 shows the structure of the chucking device of the present invention. 6 to 12 are operation explanatory diagrams.
FIG. 6 is a diagram illustrating a state in which one shape memory alloy spring is energized and heated by a switch, FIG. 7 is a diagram illustrating a state in which the switch is turned off and the shape memory alloy spring is cooled, and FIG. FIG. 9 is a diagram showing a state when a switch is switched to heat another shape memory alloy spring, FIG. 9 is a diagram showing a state when the switch is turned off and the shape memory alloy spring is cooled, and FIG. 7 is a view showing a state in which the chuck member is inserted into the hole of the disk member in the state of FIG. 7, FIG. 11 is a view showing a state in which the disk member is held by the chuck member, and FIG. FIG.

As shown in FIG. 5, Embodiment 2 of the present invention
The chuck device 20 includes a holder 22 in which a base member 23 and an arm member 24 are connected in an L-shape, a fixed chuck member 25 attached to the base member 23 of the holder 22, and a guide member 2 attached to the arm member 24.
A movable chuck member 26 mounted on an opening / closing member 29 movably provided along 7, 28, and a pair of shape memory alloys for elastically urging the movable chuck member 26 to move along the guide members 27, 28 The movable chuck member 26 includes springs 30 and 31 and control means 32 for controlling heating of the shape memory alloy springs 30 and 31.
An opening / closing member 29 elastically urged by a pair of shape memory alloy springs 30 and 31 along 28 and a third spring member 34 on this opening / closing member 29 along another guide member 33.
And a chuck member 35 mounted so as to be elastically displaceable.

The control means 32 comprises a power source 36 and a switch 37
Are connected to the shape memory alloy springs 30 and 31, and the movable chuck member 26 is guided by the conductive heating of the shape memory alloy springs 30 and 31 by switching the switch 37. 2
It is configured to be able to move along 7,28.

In this embodiment, the movable chuck member 2
6 is formed from the opening / closing member 29 and the chuck member 35 so as to be supported by the double cushion, and the control means 32 is formed so as to control the heating of the pair of shape memory alloy springs 30 and 31. This is different from that of the first embodiment.

In the chuck device 20 according to the second embodiment of the present invention, the holder 22 is formed by connecting the base member 23 and the arm member 24 to each other at substantially right angles in an L-shape, and fixed to the upper end of the base member 23. Guide members 27 and 28 to which the chuck member 25 is fixed and which stands upright from the arm member 24.
The movable chuck member 26 is slidably mounted in a vertical direction, a shape memory alloy spring 30 is mounted on an upper portion of the guide member 28, and another shape memory alloy spring 31 is mounted on a lower portion of the guide member 28. The movable chuck member 26 is elastically biased by the pair of shape memory alloy springs 30 and 31 provided facing each other via the opening and closing member 29 so that the movable chuck member 26 can be moved in the vertical direction.

The pair of shape memory alloy springs 30 and 31 are connected to a control means 32 as a control circuit having a power supply 36 and a switch 37, and the switch of the switch 37 activates the shape memory alloy springs 30 and 31. By being heated, the movable chuck member 26 guides the guide member 27,
It is configured to be able to move up and down along 28.

The operation of the chuck device according to the second embodiment of the present invention will be described below.

In the chuck device 20 according to the second embodiment of the present invention, when the switch 37 is turned on and the shape memory alloy spring 30 is energized and heated as shown in FIG. The displacement of the alloy spring 30 approaches zero, and the shape memory alloy spring 31 is extended to increase the deformation amount. When the switch is turned off in the state of FIG. 6 (FIG. 7), the restoring force is reduced with cooling of the shape memory alloy spring 30, and the elastic region of the shape memory alloy spring 30 and the unloading of the shape memory alloy spring 31 are reduced. It stops at a position where the stress in the later elastic region is balanced (FIG. 7).

At this time, the distance between the fixed chuck member 25 and the movable chuck member 26 is X2, and the disk member 3
Assuming that the diameter of the hole 39 of No. 8 is X1, the relationship of X1> X2 is satisfied.

Next, when the switch 37 is turned to the side where the shape memory alloy spring 31 is heated, the displacement of the shape memory alloy spring 31 approaches zero due to the restoring force, and the shape memory alloy spring 3
The deformation amount is increased by extending 0 (FIG. 8). When the switch 37 is turned off in this state (FIG. 9), the restoring force decreases with the cooling of the shape memory alloy spring 31, and the elastic region of the shape memory alloy spring 31 and the shape memory alloy spring 30 after unloading. It stops at the position where the stress is balanced in the elastic region (FIG. 9).
The distance X3 between the chuck members 25 and 26 at this time is represented by X3
> X1.

Next, delivery of the disk member will be described. First, the fixed chuck member 25 and the movable chuck member 26 are inserted into the holes 39 of the disk member 38 in the state shown in FIG. Then, the switch 37 is set to the shape memory alloy spring 3.
1 to be turned on so as to energize the shape memory alloy spring 31
Is heated by being energized, the shape memory alloy spring 31 contracts due to the restoring force, and the movable chuck member 26 opens with respect to the fixed chuck member 25 to hold the disk member 38 (FIG. 10).

At this time, the third spring member 34 is pulled by the shape memory alloy spring 31, and the force generated by this spring member 34 becomes the force for holding the disk member 38. Thereafter, when the switch 37 is turned off, the shape memory alloy spring 3
1 is cooled and tries to return to the state of FIG. At this time, the disk member 38 is held by the balance between the spring system formed by the shape memory alloy springs 30 and 31 and the force of the spring member 34 (FIG. 11).

In other words, the disk member 38 is held when the shape memory alloy spring 31 is energized, and is kept held even when the energization is stopped. When the shape memory alloy spring 30 is energized, the fixed chuck member 25 and the movable chuck member 2
Numeral 6 is smaller than the diameter of the hole 39 of the disk member 38, so that the state is maintained smaller than the diameter of the hole 39 of the disk member 38 even after the energization is stopped, so that the disk member 38 can be delivered. Become.

From the above, it is only when the movable chuck member 26 is opened and closed with respect to the fixed chuck member 25 that the shape memory alloy springs 30 and 31 are energized and heated, and the disk member 38 is held without energizing. In addition, the fixed chuck member 25 and the movable chuck member 26 can be kept open or narrowed, so that the life of the shape memory alloy springs 30 and 31 can be extended and power can be further saved. The holding of the disk member 38 is performed by the force of the third spring member 34, and no large force is received by the restoring force of the shape memory alloy springs 30, 31, and there is no fear of damage such as scratches.

(Embodiment 3) FIGS. 13 to 15 are schematic views for illustrating and explaining Embodiment 3 of a disk member chucking apparatus according to the present invention. FIG. 13 shows a chuck according to Embodiment 3 of the present invention. 14 and 15 are explanatory views of the operation, FIG. 14 is a view showing a state before the chuck member is inserted into the hole of the disk member, and FIG. It is a figure showing the state where the member was inserted and the disk member was held.

As shown in FIG. 13, the chuck device 40 according to the third embodiment of the present invention includes a holder 42 in which a base member 43 and an arm member 44 are connected in an L-shape, and a holder 42 attached to the holder 42. The fixed chuck member 45 provided, the movable chuck member 46 movably provided along a guide member 47 attached to the arm member 44, and an elastic bias for moving the movable chuck member 46 along the guide member 47. Pair of shape memory alloy springs 4
8 and 49, and control means 50 for heating and controlling the pair of shape memory alloy springs 48 and 49 which are arranged to face each other with the movable chuck member 46 interposed therebetween.

The control means 50 comprises a power supply 51 and a switch 52
And is connected to the shape memory alloy springs 48 and 49. The movable memory member springs 48 and 49 are energized and heated by switching the switch 52 so that the movable chuck member 46 is guided by the guide members. 4
7.

In this embodiment, the fixed chuck member 4
5 and the movable chuck member 46 are formed by connecting rigid root members 53 and 55 and flexible tip members 54 and 56 in a cantilever shape so that they can be bent. It differs from those of Examples 1 and 2 and is substantially the same in the construction of the other parts.

In the chuck device 40 according to the third embodiment of the present invention, the holder 42 is formed by connecting the base member 43 and the arm member 44, and the fixed chuck member 45 is fixed to the upper end of the base member 43. A root member 53 is fixed, a flexible tip member 54 is connected to the tip of the root member 53, and a guide member 47 that stands upright from the arm member 44.
A strong root member 55 of the movable chuck member 46 is slidably mounted in the vertical direction along the base member 5.
5, a flexible tip member 56 is connected to the tip, a shape memory alloy spring 48 is mounted on an upper portion of the guide member 47, and another shape memory alloy spring 49 is mounted on a lower portion of the guide member 47, The movable chuck member 46 is elastically biased by the pair of shape memory alloy springs 48 and 49 disposed opposite to each other so that the movable chuck member 46 can be moved in the vertical direction.

A pair of shape memory alloy springs 48, 49
Is connected to a control means 50 which is a control circuit having a power supply 51 and a switch 52. When the switch 52 is switched, one of the shape memory alloy springs 48, 49 is energized and heated. Can be moved in the vertical direction along the guide member 47.

In the third embodiment of the chuck device of the present invention, the fixed chuck member 45 and the movable chuck member 46 are connected to the rigid root members 53 and 55 by the flexible tip member 5.
The fixed chuck member 45 is connected to
This embodiment differs from the first and second embodiments in that the movable chuck member 46 and the movable chuck member 46 are formed so as to be able to bend.

In the chuck device 40 according to the third embodiment of the present invention, when the switch 52 is turned on and the shape memory alloy spring 48 is energized and heated as shown in FIG. As a result, the displacement of the shape memory alloy spring 48 approaches zero, and the shape memory alloy spring 49 is extended to increase the deformation amount. When the switch is turned off (FIG. 15) in the state of FIG. 14, the shape memory alloy spring 4
8, the restoring force decreases with cooling, and the shape memory alloy spring 4
The movable chuck member 46 is located at a position where the stress in the elastic region 8 and the elastic region after the unloading of the shape memory alloy spring 49 are balanced.
Stops (FIG. 14).

At this time, if the distance between the fixed chuck member 45 and the movable chuck member 46 is X4 and the diameter of the hole 58 of the disk 57 is X1, the relationship X1> X4 is established.

Next, when the switch 52 is turned on the side of heating the shape memory alloy spring 49 under such a relationship, the displacement of the shape memory alloy spring 49 approaches zero due to the restoring force, and the shape memory alloy spring 49 is turned off. The spring 48 is extended to increase the amount of deformation. When the switch 52 is turned off in this state (FIG. 1)
5) At the position where the stress is balanced in the elastic region of the shape memory alloy spring 48 and the elastic region after the shape memory alloy spring 49 is unloaded (FIG. 13), the restoring force is reduced due to the cooling of the shape memory alloy spring 49. Trying to return to stop. At this time, the distance X5 between the fixed chuck member 45 and the movable chuck member 46 is set to satisfy X5> X1.

Therefore, in order to perform the delivery operation of the disk member 57 by the chuck device 40 of the present invention configured as described above, first, the fixed chuck member 45 and the movable chuck member 45 are inserted into the holes 58 of the disk member 57 in the state shown in FIG. Member 46
Is inserted. Then, the switch 52 is turned on so that the shape memory alloy spring 49 is energized, and when the shape memory alloy spring 49 is energized and heated, the shape memory alloy spring 4 is turned on.
Numeral 9 is contracted by the restoring force, and the movable chuck member 46 is opened with respect to the fixed chuck member 45 to hold the disk member 57 (FIG. 15).

At this time, the root member 53 of the fixed chuck member 45 and the root member 55 of the movable chuck member 46 have high rigidity, and the force for holding the disk member 57 is the cantilever of the flexible tip members 54 and 56. Is a force generated by the bending due to the configuration of the above. Therefore, the disk member 57 is held when the shape memory alloy spring 49 is energized, and is maintained even when the energization is stopped. When the shape memory alloy spring 48 is energized, the tip members 54, 56 of the fixed and movable chuck members 45, 46 become smaller than the diameter of the hole 58 of the disk member 57. The hole 58 is kept narrower than the diameter of the hole 58 to maintain a deliverable state.

As described above, in the third embodiment of the chuck device of the present invention, the shape memory alloy springs 48, 49 are energized and heated only when the fixed and movable chuck members 45, 46 are opened and closed. , The fixed and movable chuck members 45 and 46 can be kept open, and the disk member 57 can be kept open.
Is held by the force of the bending of the fixed and movable chuck members 45 and 46, so that the holding force can be easily determined, and the holding force of the shape memory alloy springs 48 and 49 does not receive a large force. The disk member 57 can be held without fear of damage.

As described above, the electric heating of the shape memory alloy springs 48 and 49 is performed by the fixed and movable chuck members 4.
Only when opening and closing 5, 46, the disk member 57 can be held without energization, and the fixed and movable chuck members 45, 46 can be kept open or narrowed. It is possible to extend the life of the 49 and further save power, and furthermore, the holding of the disk member 57 is performed by the force of the bending of the fixed and movable chuck members 54 and 46, so that the holding force can be easily determined. The disk member 57 can be held without receiving a large force due to the restoring force of the shape memory alloy springs 48 and 49 and without fear of damage such as scratches.

(Embodiment 4) FIGS. 16 to 19 are schematic views for illustrating and explaining Embodiment 4 of the disk member chucking device of the present invention, and FIG. 16 shows the structure of the chucking device of the present invention. 17 and 18 are explanatory views of the operation, FIG. 17 is a view showing a state before the chuck member is inserted into the hole of the disk member, and FIG. 18 is a diagram showing the chuck member inserted into the hole of the disk member. FIG. 19 is a diagram showing a state in which the disk member is held, and FIG. 19 is a graph showing the relationship between stress and displacement.

As shown in FIG. 16, a chuck device 60 according to a fourth embodiment of the present invention includes a holder 62 in which a base member 63 and an arm member 64 are connected in an L-shape, and is fixed to the base member 63 of the holder 62. Fixed member 7
3 and a movable chuck member 6 provided corresponding to the fixed chuck member 65.
6, an open / close member 67 movably provided along a guide member 74 attached to the arm member 64, and a pair of shape memory alloys elastically biasing the open / close member 67 to move along the guide member 74. Springs 68 and 69 and opening / closing member 6
Shape-memory alloy spring 6 provided oppositely with interposition 7
A movable chuck member 66 is held at a predetermined interval with respect to the fixed chuck member 65, and the movable chuck member 66 is pressed by the opening / closing member 67. And is displaced.

The control means 70 is formed as a control circuit having a power supply 71 and a switch 72, and is connected to the shape memory alloy springs 78 and 79.
When the shape memory alloy springs 78 and 79 are energized and heated by the switching of the step 2, the opening / closing member 67 is moved to the guide member 74.
, And the movable chuck member 66 can be moved by the movement of the opening / closing member 67.

Further, in this embodiment, the fixed chuck member 65 and the movable chuck member 66 are firmly fixed to the fixed member 73 so that they can be flexed.
77 and the flexible tip members 76 and 78 are connected to each other in a cantilever shape, and the strong root member 77 of the movable chuck member 66 is pressed and displaced by the opening and closing member 67. It is different from those of the first to third embodiments, and the configuration of other parts is substantially the same.

In the chuck device 60 according to the fourth embodiment of the present invention, the holder 62 is formed by connecting the base member 63 and the arm member 64, and the fixing member 73 is fixed to the upper end of the base member 63. The fixing member 73
A strong base member 75 of the fixed chuck member 65 is fixed thereon, and a flexible end member 76 is connected to the end thereof. The strong root member 7 of the movable chuck member 66 via the spacer member 79 corresponding to the fixed chuck member 65.
7 is attached and supported in a cantilever shape, and a flexible tip member 78 is connected to a tip portion of the base member 77 in a cantilever shape. An opening / closing member 67 is slidably mounted in a vertical direction along a guide member 74 that stands upright from the arm member 64. Are provided so as to protrude. Further, a shape memory alloy spring 68 is mounted on the upper portion of the guide member 74 with the opening / closing member 67 interposed therebetween.
9 is attached to the lower part of the guide member 74, and is elastically biased by the pair of shape memory alloy springs 68, 69 arranged opposite to each other so that the opening / closing member 67 can be moved in the vertical direction.

A pair of shape memory alloy springs 68, 69
Is connected to control means 70, which is a control circuit having a power supply 71 and a switch 72. When the switch 72 is switched, one of the shape memory alloy springs 68, 69 is energized and heated to open and close the opening / closing member 67. The movable chuck member 66 is moved vertically along the guide member 74 so as to press the root member 77 of the movable chuck member 66 via the protruding portion 80 to be elastically displaced.

In the fourth embodiment of the chuck apparatus of the present invention, the fixed chuck member 65 and the movable chuck member 66 are connected to the rigid base members 75 and 77, respectively, and the flexible fixed end member 76 and Movable tip member 7
8 are connected to each other in a cantilever shape, and the fixed chuck member 65 and the movable chuck member 76 are formed so as to be able to bend, respectively, which is different from those of the above-described first to third embodiments. . Further, the fixed chuck member 6
Another stopper member 81 is provided on the inner side of the tip of the root member 75 so as to be able to receive the root member 77 of the movable chuck member 66 that has been pressed and displaced.

The operation of the chuck apparatus according to the fourth embodiment of the present invention will be described below.

First, when the switch 72 is turned on and the shape memory alloy spring 68 is energized and heated, the displacement of the shape memory alloy spring 68 approaches zero due to the restoring force.
9 is extended to increase the amount of deformation. And the opening and closing member 6
7 moves in a direction to open the movable chuck member 66 with respect to the fixed chuck member 65, and presses a root member 77 of the movable chuck member 66. The root member 77 is distorted by elastic deformation, and Tip member 76
The distance between the movable chuck member 66 and the distal end member 78 is reduced. In this state, when the switch 72 is turned off (FIG. 16), the restoring force is reduced due to the cooling of the shape memory alloy spring 68, and the elastic area of the shape memory alloy spring 68 and the root member 77 of the movable chuck member 66 are reduced. It stops at the position where the stress balances in the elastic range after the unloading of the spring force and the shape memory alloy spring 69 (FIG. 17). The fixed chuck member 65 at this time
X6 <X1 with respect to the diameter X1 of the hole 86 of the disk member 85 with respect to the distance X6 between the distal end members 76 and 78 of the movable chuck member 66.

When the switch 72 is turned on on the side where the shape memory alloy spring 69 is energized, the displacement of the shape memory alloy spring 69 approaches zero due to the restoring force, the shape memory alloy spring 68 is extended, and the amount of deformation is increased. To increase. Then, the opening / closing member 67 is separated from the root member 77 of the movable chuck member 66, and the root member 77 of the movable chuck member 66 is opened. When the switch 72 is turned off in this state, the restoring force decreases with the cooling of the shape memory alloy spring 69, and the stress between the elastic region of the shape memory alloy spring 69 and the elastic region after the shape memory alloy spring 68 is unloaded. Stop at the position where
8).

At this time, the distance X between the tip member 76 of the fixed chuck member 65 and the tip member 78 of the movable chuck member 76 is determined.
7 with respect to the diameter X1 of the hole 39 of the disc 38, X7
> X1.

Next, the delivery of a disc will be described. First, the tip member 76 of the fixed chuck member 65 and the tip member 78 of the movable chuck member 76 are inserted into the hole 86 of the disk 85 in the state shown in FIG. Then, when the switch 72 is turned on so as to energize the shape memory alloy spring 69 and the shape memory alloy spring 69 is energized and heated, the shape memory alloy spring 69 is contracted by a restoring force, and the distal end member of the fixed chuck member 65. 76 and the distal end member 78 of the movable chuck member 66 open to hold the disk member 85.

At this time, the strain of the disk member 85 approaches zero, and the fixed chuck member 65 and the movable chuck member 66
Of the disc member 8 by the strain of the tip members 76 and 78
5 is retained.

That is, the holding force of the disk member 85 is determined by the spring constant of the tip members 76 and 78. Thereafter, when the switch 72 is turned off, the shape memory alloy spring 6
9 is cooled and the restoring force is reduced, but since the opening / closing member 67 does not contact the root member 77 of the movable chuck member 66, the disk member 85 is kept held.

That is, when the disk member 85 is energized to the shape memory alloy spring 69, the cantilevered tip members 76, 7
8 and continue to be held even if the energization is stopped. Further, when the shape memory alloy spring 68 is energized, the tip members 76 and 78 become narrower than the diameter of the hole 86 of the disk member 85, and also maintain a state smaller than the inner diameter of the disk member 85 even after the energization is stopped. It will maintain a deliverable state.

As described above, in the present invention, energizing heating of the shape memory alloy spring is performed only by opening and closing the chuck member, and the disk member can be held without continuing energization. Can be kept open and can be narrowed, extending the life of the shape memory alloy spring, further saving power, and holding the disk member by the force of the cantilever chuck member. The effect is such that the force is always constant, does not receive a large force due to the restoring force of the shape memory alloy spring, and there is no fear of damage such as scratches.

[0076]

As described above, according to the first aspect of the present invention,
The chuck device described above is capable of moving along a holder in which the base member and the arm member are connected in an L shape, a fixed chuck member attached to the base member of the holder, and a guide member attached to the arm member. A movable chuck member provided with a pair of spring members for elastically urging the movable chuck member to move along the guide member, wherein at least one of the spring members is a shape memory alloy spring. And a control means for heating and controlling the shape memory alloy spring, so that it can be configured with a simple mechanism and simple wiring without disposing an air actuator or the like near the chuck member, and can be downsized. The shape memory alloy spring is energized and heated only when opening and closing the chuck member. It can hold the disc member and open the chuck, and can continue to narrow, easily determine the holding power for holding the disk member is made by the force due to deflection of the chuck member, also,
A large force is not received by the restoring force of the shape memory alloy spring, and the spring can be held without fear of damage such as scratches.

The chuck device according to claim 2 of the present invention is
Since the control means has a power source and a switch and controls heating of the shape memory alloy spring, the chuck member can be opened and closed by turning on and off the switch, and the disk member can be opened and closed by the spring force without applying special power. Can be kept.

According to the third aspect of the present invention, there is provided the chuck device,
A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable chuck member movably provided along a guide member attached to the arm member A chuck device having a pair of shape memory alloy springs that elastically urge the movable chuck member to move along the guide member, and control means for controlling heating of the shape memory alloy spring. It can be configured with a simple mechanism and simple wiring without arranging an air actuator etc. near the member, it can be downsized, and the energization heating of the shape memory alloy spring is used when opening and closing the chuck member Only, the disc member can be held without energization, and the chuck is kept open and narrowed Since the holding of the disk member is performed by the force of the bending of the chuck member, it is easy to determine the holding force, and the disk member does not receive a large force due to the restoring force of the shape memory alloy spring. Can be held without worry.

The chuck device according to the fourth aspect of the present invention provides:
Since the control means has a power source and a switch, the chuck member can be opened and closed by turning on and off the switch,
It is possible to keep holding the disk member by the spring force without giving special power.

The chuck device according to claim 5 of the present invention is
A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable chuck member movably provided along a guide member attached to the arm member A pair of shape memory alloy springs that elastically urge the movable chuck member to move along the guide member, and control means for controlling heating of the shape memory alloy spring, A movable chuck member elastically urged by the pair of shape memory alloy springs along the guide member, and a movable guide member on the open / close member along another guide member and elastically displaceable by another spring member; Since it is formed from the attached chuck member, a simple mechanism and simple operation without placing an air actuator etc. near the chuck member In addition to being able to be configured with wiring, the size can be reduced, and the shape memory alloy spring is energized and heated only when the chuck member is opened and closed, and the disk member can be held without continuing energization. In addition, the chuck can be opened and kept narrow, and the holding force is easily determined because the holding of the disk member is performed by the force of the bending of the chuck member.
A large force is not received by the restoring force of the shape memory alloy spring, and the spring can be held without fear of damage such as scratches.

According to a sixth aspect of the present invention, in the chuck device, since the control means has a power supply and a switch, it can be configured with a simple mechanism and simple wiring, and can be downsized. can do.

The chuck device according to claim 7 of the present invention provides
A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable chuck member movably provided along a guide member attached to the arm member A pair of shape memory alloy springs for elastically urging the movable chuck member to move along the guide member, and means for controlling heating of the shape memory alloy spring, The chuck member is formed by connecting a strong root member and a flexible tip member in a cantilever shape, and the movable chuck member is elastically biased by the pair of shape memory alloy springs along the guide member. And a flexible tip member supported in a cantilever shape on the root member, so that the air actuator is located near the chuck member. It can be configured with a simple mechanism and simple wiring without placing any data, etc., it can be downsized, and the shape memory alloy spring is energized and heated only when opening and closing the chuck member. The disk member can be held without energization, and the chuck can be opened and narrowed continuously. Since the disk member is held by the force of the bending of the chuck member, the holding force can be easily determined. In addition, a large force is not received by the restoring force of the shape memory alloy spring, and the spring can be held without fear of damage such as scratches.

The chuck device according to claim 8 of the present invention provides:
Since the control means has a power source and a switch, the chuck member can be opened and closed by turning on and off the switch,
It is possible to keep holding the disk member by the spring force without giving special power.

The chuck device according to the ninth aspect of the present invention provides
In a chuck device having a holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable chuck member provided to face the fixed chuck member, An opening and closing member movably provided along a guide member attached to the arm member, a pair of shape memory alloy springs elastically biasing the opening and closing member to move along the guide member, and the shape memory Means for selectively controlling the heating of the alloy spring, wherein the movable chuck member is held at a predetermined interval with respect to the fixed chuck member, and the movable chuck member is pressed by the opening / closing member to be elastically displaced. Therefore, a simple mechanism and simple wiring can be used without arranging an air actuator or the like near the chuck member. Only when the chuck member is opened and closed, the shape memory alloy spring is energized and heated only when the chuck member is opened and closed. The disk member can be held without continuing energization, and the chuck member can be opened and closed. Since the holding of the disk member is performed by the force of the bending of the chuck member, the holding force is easily determined, and a large force is not received by the restoring force of the shape memory alloy spring. Can be held without worry.

According to a tenth aspect of the present invention, in the chuck device, the fixed chuck member and the movable chuck member are provided at intervals by a spacer member, and each has a strong root member and a flexible tip member. Since the disk member is formed by being connected in a cantilever shape, the holding force is easily determined because the holding of the disk member is performed by the elastic force due to the bending of the chuck member, and a large force is generated by the restoring force of the shape memory alloy spring. It can be held without suffering damage or damage.

In the chuck device according to the eleventh aspect of the present invention, the opening / closing member has a protrusion for pressing the movable chuck member, and the fixed chuck member limits elastic displacement of the movable chuck member. , The structure can be made simple, and the displacement of the chuck member can be well defined.

According to a twelfth aspect of the present invention, since the control means has a power source and a switch,
The chuck member can be opened and closed by turning on and off the switch, and the disc member can be continuously held by the spring force without applying special power.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a configuration of a chuck device according to a first embodiment of the present invention.

FIG. 2 is a view showing a state before the chuck member is inserted into a hole of the disk member of the chuck device of the present invention shown in FIG. 1;

3 is a view showing a state where the chuck member is inserted into the disk member of the chuck device of the present invention in FIG. 1 and the disk member is held.

FIG. 4 is a view showing a state where the chuck member of the chuck device of the present invention shown in FIG. 1 is extracted from a hole of a disk member.

FIG. 5 is a schematic side view showing a configuration of a chuck device according to a second embodiment of the present invention.

FIG. 6 is a view showing a state in which one shape memory alloy spring is energized and heated by a switch of the chuck device in Embodiment 2 of the present invention in FIG. 5;

FIG. 7 is a view showing a state when the shape memory alloy spring is cooled by turning off a switch of the chuck device of FIG. 5;

FIG. 8 is a view showing a state where a switch is switched to heat another shape memory alloy spring of the chuck device of FIG. 5;

9 is a diagram showing a state in which the switch of the chuck device of FIG. 8 is turned off and the shape memory alloy spring is cooled.

FIG. 10 is a view showing a state in which the chuck member is inserted into the hole of the disk member in the state of FIG.

FIG. 11 is a diagram showing a state in which a disk member is held by a chuck member in a chuck device according to a second embodiment of the present invention.

FIG. 12 is a graph showing a relationship between a stress and a displacement of a chuck device according to a second embodiment of the present invention.

FIG. 13 is a schematic side view illustrating a configuration of a chuck device according to a third embodiment of the present invention.

FIG. 14 is an operation explanatory view showing a state before the chuck member is inserted into the hole of the disk member of the chuck device according to the third embodiment of the present invention in FIG. 13;

FIG. 15 is a view showing a state in which the chuck member is inserted into the disk member of the chuck device in the third embodiment of the present invention shown in FIG. 13 and the disk member is held.

FIG. 16 is a schematic side view showing a configuration of a chuck device according to a fourth embodiment of the present invention.

FIG. 17 is an operation explanatory view showing a state before the chuck member is inserted into the hole of the disk member of the chuck device according to the fourth embodiment of the present invention in FIG. 16;

FIG. 18 is an operation explanatory view showing a state in which the chuck member is inserted into the hole of the disk member of the chuck device and the disk member is held in the fourth embodiment of the present invention in FIG. 16;

FIG. 19 is a graph showing the relationship between stress and displacement in the chuck device of the present invention.

FIG. 20 is a schematic side view of a conventional chuck device.

[Explanation of symbols]

 Reference Signs List 1 chuck device 2 holder 3 base member 4 arm member 5 fixed chuck member 6 movable chuck member 7 guide member 8 guide member 9 shape memory alloy spring 10 spring member (coil spring) 11 control means 12 power supply 14 switch 16 disk member 17 hole 20 Chuck device 22 Holder 23 Base member 24 Arm member 25 Fixed chuck member 26 Movable chuck member 27 Guide member 28 Guide member 29 Opening and closing member 30 Shape memory alloy spring 31 Shape memory alloy spring 32 Control means 33 Power supply 34 Switch 36 Disk member 37 Hole 40 Chuck device 42 holder 43 base member 44 arm member 45 fixed chuck member 46 movable chuck member 47 guide member 48 shape memory alloy spring 49 shape memory alloy spring 50 control means 51 power supply 52 Switch 53 Root member (strong) 54 Tip member (soft) 55 Root member (strong) 56 Tip member (soft) 57 Disk member 58 Hole 60 Chuck device 62 Holder 63 Base member 64 Arm member 65 Fixed chuck member 66 Movable chuck member 67 Opening / closing member 68 Shape memory alloy spring 69 Shape memory alloy spring 70 Control means 71 Power supply 72 Switch 73 Fixing member 74 Guide member 75 Root member (strong) 76 Tip member (flexible) 77 Root member (strong) 78 Tip member (flexible) 79 Spacer member 80 Projection 81 Stopper member 85 Disk member 86 Hole

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C007 DS01 ES02 ET08 ET10 EV03 EV11 HS06 NS14 5D112 AA24 KK01 5D121 AA20 JJ02 JJ09

Claims (12)

[Claims] 1. A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to a base member of the holder, and a movable member provided along a guide member attached to the arm member. A movable chuck member having a pair of spring members for elastically urging the movable chuck member to move along the guide member, wherein at least one of the spring members is formed of a shape memory alloy spring. A chuck device comprising: a control unit formed to control heating of the shape memory alloy spring. 2. The chuck device according to claim 1, wherein said control means has a power supply and a switch, and controls heating of said shape memory alloy spring. 3. A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable member provided along a guide member attached to the arm member. A pair of shape memory alloy springs that elastically urge the movable chuck member to move along the guide member, and control means for controlling heating of the shape memory alloy spring. A chuck device comprising: 4. The chuck device according to claim 3, wherein said control means has a power supply and a switch. 5. A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable member provided along a guide member attached to the arm member. A pair of shape memory alloy springs that elastically urge the movable chuck member to move along the guide member, and control means for controlling heating of the shape memory alloy spring. The movable chuck member has an opening / closing member elastically biased by the pair of shape memory alloy springs along the guide member, and another spring member along another guide member on the opening / closing member. And a chuck member mounted so as to be elastically displaceable by the chuck device. 6. The chuck device according to claim 5, wherein said control means has a power supply and a switch. 7. A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable member provided along a guide member attached to the arm member. And a pair of shape memory alloy springs which elastically urge the movable chuck member to move along the guide member, and means for controlling heating of the shape memory alloy spring. The fixed chuck member is formed by connecting a strong root member and a flexible tip member in a cantilever manner, and the movable chuck member is configured to move the pair of shape memory alloy springs along the guide member. A strong base member elastically biased by
A chuck device, comprising: a flexible tip member supported in a cantilever manner on the root member. 8. The chuck device according to claim 7, wherein said control means has a power supply and a switch. 9. A holder in which a base member and an arm member are connected in an L-shape, a fixed chuck member attached to the base member of the holder, and a movable chuck member provided to face the fixed chuck member. An open / close member movably provided along a guide member attached to the arm member, and a pair of shape memory alloy springs elastically biasing the open / close member to move along the guide member And means for selectively heating and controlling the shape memory alloy spring. The movable chuck member is held at a predetermined interval with respect to the fixed chuck member, and the movable chuck member is held by the opening / closing member. A chuck device that is pressed and elastically displaced. 10. The fixed chuck member and the movable chuck member are provided at intervals by a spacer member, and are formed by connecting a strong root member and a flexible tip member in a cantilever shape. The chuck device according to claim 9, wherein: 11. The apparatus according to claim 10, wherein the opening / closing member has a protrusion for pressing the movable chuck member, and the fixed chuck member has a stopper member for limiting elastic displacement of the movable chuck member. The chuck device as described in the above. 12. The chuck device according to claim 10, wherein said control means has a power supply and a switch.