JPH11117916A - Clamping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent unexpected fix releasing. SOLUTION: An operating lever 18 is separately formed of a base part 18-1 and a holding part 18-2, and the holding part is connected to the terminal of the base part so as to be turnable from a linear position related to the base part in a fix releasing direction and so as to be unturnable from the linear position in the fixing direction. A slider 36 which is partially overlapped with the base part 18-1 is arranged on the holding part 18-2 of the operating lever so as to a slidable against the deviating force of a return spring 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device capable of temporarily fixing an object at a corresponding position by clamping or pressing a clamp piece interlocked with an operation lever by a clamp portion.

[0002]

2. Description of the Related Art A clamping device (also referred to as a clamper) is provided as a so-called jig for positioning and temporarily fixing and holding a workpiece during machining, welding, or assembling members. Have been. As such a clamp device, for example, a so-called toggle type configuration including a clamp piece that is interlocked with the rotation of an operation lever is known.

[0003] Such a toggle-type clamping device has, for example, a main body fixed to a predetermined work table or the like, and the above-mentioned workpiece, that is, an object to be fixed, is pivotally mounted on the main body. A clamp piece that allows an object to be sandwiched and fixed between the work table and the like is rotatably supported. Then, the operating point of the operating lever, which is supported by the connecting point with the other end of the rotatable link that is pivotally connected at one end to the main body, is pivoted to the force point of the clamp piece, and a clamp that can be interlocked with the operating lever A clamping device having a piece is formed.

In the clamp device having such a configuration, the flip-up position of the operation lever and the clamp piece is set as the fixed release position, and the corresponding direction under the rotation of the operation lever accompanied by the rotation of the link. The object can be fixed by the rotation of the clamp piece and thus the movement of the clamp portion.

[0005]

The known clamping device does not have the stopper means for the operation lever when the object is fixed, so that the object can be fixed and released smoothly and easily.

However, on the other hand, when an external force in the unlocking direction is applied to the operating lever at the fixed position, the operating lever easily rotates in the unlocking direction. In a known clamping device having no fixing device, it is unavoidable that the fixing of an object is accompanied by an unexpected fixing release. Such an unexpected release of the clamp device may cause a decrease in workability, reliability, and safety of various operations using the clamp device as a jig.

Further, since the known clamp device is configured to be used by fixing the main body to a work table or the like, it is unavoidable to limit the range of use of the clamp device. In the known clamp device, the size of the object that can be fixed is limited under the height of the fulcrum of the clamp piece with respect to the main body, so that a clamp device corresponding to the size of the object is required each time. Selection must be made, and from this point, a decrease in workability is inevitable.

[0008] The known clamp device has neither the operating lever nor the holding means of the clamp piece in the fixed release position, and merely sets the substantially vertical position of the clamp piece as the fixed release position. In other words, if the clamp piece and the operating lever are not properly rotated to the release position after the release of the fixation, that is, the substantially vertical position of the clamp piece, the clamp piece and the operation lever may return in the fixing direction under their own weight. A reduction in workability and safety is inevitable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clamp device which can prevent unexpected release of fixing.

It is another object of the present invention to provide a clamp device that can appropriately cope with a change in the size of an object in addition to preventing unexpected release of fixation.

[0011]

According to the present invention, to achieve this object, an operating lever is formed separately from a base portion on a fulcrum side and a grip portion on a force point side with respect to the fulcrum. The terminal of the base is connected to the base so as to be rotatable in a fixed releasing direction from a predetermined initial position with respect to the base, and is not rotatable in the fixed direction from the initial position. And
A slider is slidably disposed on one of the base portion and the grip portion of the operation lever against the biasing force of the return spring, and slides to the other side against the biasing force of the return spring. The slider is partially polymerized on the other side,
Only when engaged, the base and the grip of the operation lever can be integrally rotated in the fixing release direction.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1A and 2, in a clamp device 10 according to an embodiment of the present invention, a main body 12 is provided.
The pivot point 14b of the clamp piece 14 pivotally connected to the fulcrum 14a is pivotally connected by a pivot pin 20 to the operation point 18b of the operating lever 18 connected to the fulcrum 18a via a rotatable link 16. ing.

For example, the main body 12, which is fixed to the work table 22 by bolts 21 or the like, is formed by a pair of vertical walls 12a facing each other, and a pivot pin provided between the vertical walls constituting the main body.
By means of 24, a fulcrum 14a of the clamp piece 14 at the end of which the clamp portion 14c is defined is pivotally attached to the main body.

The fulcrum 18a of the operation lever 18 is rotatably connected to the other end of the link 16 pivotally connected to the main body 12 at one end by a pivot pin 26.

In such a configuration, as shown in FIG. 1A, when the operation lever 18 is at the lowered position and the corresponding clamp member 14 is at the lowered position, the fixed object 30 is connected to the worktable 22 by the clamp 22. It is sandwiched and fixed between the one clamp part. When the clamp piece 14 is rotated in the release direction in conjunction with the operation lever 18 from such a fixed state of the target object 30, the fixing of the target object is released due to the separation of the clamp portion 14c from the fixed object. (See FIG. 1B).

The basic principle and the basic configuration of such a so-called toggle type clamping device 10 are generally known, and the basic configuration itself is not the purpose of the present invention, and will not be described in detail here. .

Here, as can be seen from FIGS. 1A and 2, in the present invention, the operating lever 18 is provided with a base 18-1 on the fulcrum side and a grip 18 on the fulcrum side with respect to the fulcrum 18a.
-2 and formed separately. And this gripping part 18-2
However, the terminal of the base 18-1, a predetermined initial position with respect to the base,
For example, they are connected by a connecting pin 32 so as to be rotatable in the fixing release direction from the linear position and not to be rotatable in the fixing direction from the linear position.

The holding portion 18-2 is, for example, a connecting pin.
A stopper 34 engageable with the base 18-1 is integrally formed on the lower surface of the distal end to be inserted into the base 32, and the stopper is engaged with the base in the linear position. The rotation of the grip portion in the fixing direction, that is, downward (clockwise in the drawing) is restricted.

A slider 36 is slidably provided in, for example, the hollow portion 18-2a of the grip portion 18-2 of the operation lever against the biasing force of the return spring 38 and is not detachable. The sliding range of the slider 36 is defined between a non-overlapping position with respect to the base 18-1 shown by a dashed line in FIG. 1A and a partially overlapping position with respect to the base shown by a solid line in FIG. I have.

As the return spring 38, for example,
The locking piece 40 suspended from the slider 36 and the hollow portion 18 of the grip portion
A tension coil spring stretched between the locking pin 42 fixed to -2a can be used.

Here, as shown in FIGS. 1A and 2, a predetermined range of the free end side of the grip portion 18-2 of the operating lever is covered with a synthetic resin member or a hard rubber member. Is usually defined as a grip 44. In the present invention, the slider is moved to a position operable with any of the five fingers of the operator's hand holding the grip 44.
36 are provided. In the embodiment of the present invention, the gripper 18 at a position adjacent to the grip 44 is operable with the thumb.
The slider 36 is provided on the upper surface of the -2.

As shown in FIG. 3 (A), the slider 36 normally moves the base 18 under the biasing force of the return spring 38.
In this state, the gripping portion 18-2 has no means for integrally rotating the base in the unlocking direction. Even if an external force acts in the direction of the arrow, that is, in the direction of releasing the lock, the gripping portion rotates in the corresponding direction about the connecting pin 32 without the base as shown in FIG. Just do it.

That is, in the initial position of the slider 36 which is biased and held under the biasing force of the return spring 38, even if an external force is applied to the operation lever 18 in the direction of releasing the fixing, the external force is not applied to the base portion 18. The clamp piece 14 is not rotated in the fixing releasing direction under this external force because it is absorbed under the rotation of the grip portion 18-2 with respect to -1. Therefore, the fixing of the object 30 by the clamp portion 14c does not occur.

On the other hand, the slider 36 is moved from the initial position indicated by the dashed line in FIG. 1A to the base 18-1 indicated by the solid line in FIG.
When the slider is slid against the biasing force of the return spring 38 to the overlapping position, the gripper 18-2 is prevented from rotating with respect to the base under partial engagement between the slider and the base. Therefore, the operation lever 18 can be entirely rotated around the fulcrum 18a, that is, the pivot pin 28. In this state, the grip 44 is pulled up, that is, the operation lever is turned in the unlocking direction. Thus, the fixing of the object 30 by the clamp portion 14c of the clamp piece is performed.

After releasing the fixing of the object 30, the slider 36
When the operating force is released, the slider returns to the return spring.
It automatically returns to the initial position under the biasing force of 38 (see the dashed line in FIG. 1B). Then, for the base 18-1,
Since the rotation of the gripper 18-2 from the linear position to the fixing direction is regulated by the stopper 34 at the tip of the gripper, the gripper is rotated in the fixing direction from the fixing release position shown in FIG. Then, irrespective of the slider 36, the operation lever 18 is integrally rotated in the fixing direction while the linear position of the base portion and the grip portion remains (see FIG. 3A).

As described above, in the clamp device 10 according to the embodiment of the present invention, the operation of releasing the fixing of the clamp piece 14 by the operation lever 18 can be arbitrarily selected by the slide operation of the slider 36. , Return spring
By biasing and holding the slider to the initial position under the biasing force of 38, the external force acting on the operating lever is reduced by the base 18-1.
Therefore, the rotation of the clamp piece in the corresponding direction under the external force acting in the fixing release direction can be reliably prevented. Therefore, the unexpected release of the object 30 due to the action of the external force is prevented, and the workability and the workability of various works using the clamp device 10 as a jig, and the safety are easy and reliable. To improve.

The slider 36 to which the biasing force is applied by the return spring 38 only needs to be slidably provided on the grip 18-2 of the operation lever, so that the structure can be prevented from becoming complicated.

Furthermore, it is sufficient to operate the slider 36 only when the operation lever 18 rotates in the fixing releasing direction, so that the operability at the time of fixing the object 30 is not different from the known configuration. Then, since it is sufficient to slide the slider 36 in the base direction with the finger of the hand gripping the grip 44 of the grip portion of the operation lever, the fixing release operation by the operation lever 18 is also required.
According to the present invention, it becomes possible smoothly and easily.

In the embodiment of the present invention, the linear position with respect to the base 18-1 is illustrated as the initial position of the gripper 18-2. The position is not limited to the linear position as long as it is possible, and another position, that is, an appropriate inclined position from the base may be set as the initial position of the gripping part with respect to the base.

Further, although the slider 36 is provided on the grip portion 18-2, the present invention is not limited to this, and a configuration in which the slider is slidably provided on the base portion 18-1 may be employed. In this case, the slider 36 is disposed so as to be partially overlapped with the holding portion 18-2 under a slide against the biasing force of the return spring 38.

However, as in the embodiment of the present invention,
If the slider 36 is provided on the grip portion 18-2, the slide operation can be performed with the finger of the hand holding the grip 44, so that the clamp device 10 can be operated with one hand, and the operability is further improved.

In the embodiment of the present invention, the downward rotation position of the operation lever 18 is set to the fixed position with respect to the object 30. However, the present invention is not limited to this. The rotation position may be a fixed position with respect to the object. Further, the rotation direction of the operation lever 18 and the clamp piece 14 is not limited to the vertical direction, and the operation lever and the clamp piece may be rotatable in the horizontal direction, that is, in the horizontal direction.

Further, in the embodiment of the present invention, the clamp device 10 is embodied as a toggle type. However, the present invention is not limited to this. For example, a so-called cam type clamp device using a cam may be used. The present invention may be applied.

In the above-described embodiment of the present invention, the object 30 is fixed by being sandwiched between the worktable 22 to which the main body 12 is fixed and the clamp portion 14c of the clamp piece. However, the present invention is not limited to this. For example, as shown in FIGS. 4 (A) and 5, a clamp device 114a according to another embodiment of the present invention, The support piece 48 to which 130 can be fixed may be provided on the clamping device itself.

In a clamping device 110 according to another embodiment of the present invention, a force point 114b of a clamp piece 114 pivotally connected to a fulcrum 114a of a main body 112 is also connected to a fulcrum 118a of a fulcrum 118a via a rotatable link 116. The operation lever 118 is pivotally connected to an operation point 118 b of the operation lever 118 by a pivot pin 120.

The fulcrum 114a of the clamp piece is, for example,
It is pivotally attached to the main body by a pivot pin 124 erected between the left and right vertical walls of 112. And the fulcrum 118a of the operation lever
Is rotatably connected by a pivot pin 128 to the other end of a link 116 pivotally connected to the main body 112 by a pivot pin 126.

Further, as can be seen from FIGS. 4A and 5, a clamping device 11 according to another embodiment of the present invention.
In FIG. 5, a support piece 48 facing the clamp portion 114c of the clamp piece is provided integrally with the tip of a base body 50 separate from the main body 112, and an adjustment screw 54 having an operation dial 52 at one end. Are rotatably provided by a pair of support pieces 56 and 58 at opposing positions and are immovable in the axial direction. Then, the main body 112 is slidably connected to the base body 50 under the screwing of the integral nut 60 to the adjusting screw 54.

In such a configuration, as shown in FIG. 4A, the lowering position of the operating lever 118 and the corresponding forward position of the clamp piece 114 (rightward position in the drawing)
The fixed object 130 is sandwiched and fixed between the support piece 48 of the base body and the clamp portion 114c of the clamp piece. Then, from such a fixed state of the object 130, the operation lever
If the clamp piece 114 is rotated in the release direction in conjunction with 118, the fixing of the target object is released by the separation of the clamp portion 114c from the fixed object (see FIG. 4B).

As can be seen from FIGS. 4A and 5, in another embodiment of the present invention, the operation lever 11 is also provided.
8 are separately formed into a base portion 118-1 on the fulcrum side and a grip portion 118-2 on the fulcrum side with respect to the fulcrum 118a, and this grip portion is engaged with the terminal of the base portion by engagement with the stopper 134 on the lower surface. For example, it is connected by a connecting pin 132 so as to be rotatable only from the linear position in the fixing releasing direction.

Then, the slider 136 is inserted into, for example, the grip portion 118-2 of the operation lever through the slit 62 on the upper surface.
It is slidable against the biasing force of the return spring 138 and is arranged so as not to be detached. The sliding range of the slider 136 is defined between a non-overlapping position with respect to the base 118-1 shown by a dashed line in FIG. 4A and a partially overlapping position with respect to the base shown by a solid line in FIG. .

As the return spring 138, for example, a tension coil spring stretched between a locking piece 140 suspended from the slider 136 and a locking pin 142 fixed to the grip portion 118-2 can be used. .

Then, as shown in FIGS. 4 (A) and 5, a synthetic resin member or a hard rubber member is covered in a predetermined range on the free end side of the grip portion 118-2 of the operation lever.
Thus, the portion is defined as the grip 144.

The position where the slider 136 is provided is as follows.
As in the above-described embodiment, the position is set to a position operable with any one of the five fingers of the operator's hand holding the grip 144, for example, the thumb.

Here, as can be seen from FIG. 4 (A),
In the clamp device 110 according to another embodiment of the present invention, the locking piece 64 on the gripping part side located forward of the connecting point between the base 118-1 and the gripping part 118-2, that is, the connecting pin 132.
A spring means 68 composed of a tension coil spring is stretched between the base and the locking pin 66 on the base side fixed to the base. The clamp device 110 is configured to be able to return and hold the gripper 118-2 to a linear position with respect to the base 118-1 under the biasing force of the spring means (tensile coil spring) 68.

As shown in FIG. 6A, in the clamp device 110 according to another embodiment of the present invention, the slider 13
6 is normally biased and held at a non-overlapping position where it does not overlap with the base 118-1 under the biasing force of the return spring 138. Even if an external force acts in the release direction, the gripping portion rotates in the corresponding direction about the connecting pin 132 without the base, as shown in FIG. 6B.

That is, in the initial position of the slider 136 which is biased and held under the biasing force of the return spring 138, even if an external force is applied to the operation lever 118 in the direction of releasing the fixing, the external force is not applied to the base 118. The clamp piece 114 is not rotated in the fixing releasing direction under this external force because it is absorbed under the rotation of the gripper 118-2 with respect to -1. Therefore, the fixing of the object 130 by the clamp 114c does not occur.

When the gripper 118-2 rotates with respect to the base 118-1 under external force, the gripper 118-2 of the operation lever rotates against the biasing force of the spring means 68. Therefore, when the external force is released, the grip portion is automatically returned to the initial position, that is, a linear position with the base under the biasing force of the spring means.

Then, the slider 136 is moved from the initial position indicated by the dashed line in FIG. 4A to the base 118-1 indicated by the solid line in FIG.
When the slider is slid against the biasing force of the return spring 138 to the overlapping position, the rotation of the grip portion 118-2 with respect to the base is prevented under the partial engagement between the slider and the base. Therefore, the operation lever 118 can be rotated about the fulcrum 118a, that is, the pivot pin 128 as a whole. In this state, the grip 144 is pulled up, that is, the operation lever is turned in the unlocking direction. Thereby, the fixing of the object 130 by the clamp portion 114c of the clamp piece is released.

After releasing the fixing of the object 130, the slider
When the operation force on 136 is released, the slider automatically returns to the initial position under the biasing force of the return spring 138 (see the dashed line in FIG. 4B). Since the rotation of the gripper 118-2 from the linear position to the fixing direction with respect to the base 118-1 is regulated by the stopper 134 at the tip of the gripper, the grip 114 is moved from the unlocked position shown in FIG. That is, if the grip is rotated in the fixing direction, the operation lever 118 is integrally rotated in the fixing direction without changing the linear position of the base and the grip independently of the slider 136 (see FIG. )).

As described above, also in the clamp device 110 according to another embodiment of the present invention, the slider 136 is biased and held at the initial position under the biasing force of the return spring 138, thereby acting on the operation lever. External force, the base 118-
1 can be absorbed under the rotation of the base 118-2 with respect to 1, so that the rotation of the clamp piece in the corresponding direction under the external force acting in the unlocking direction can be reliably prevented. for that reason,
Unintended release of the object 130 due to the action of the external force is prevented, and the workability, reliability and safety of various works using the clamp device 110 as a jig are facilitated.
In addition, the effect of reliably improving can be sufficiently ensured even in this clamp device.

In the clamp device 110, the base body 50 provided with the support piece 48 is slidably provided on the main body 112 via the screwing of the adjusting screw 54 and the nut 60. That is, in this configuration,
Since the base body 50 and the main body 112 relatively move back and forth by the screw 60 being screwed into and out of the adjustment screw by the rotation operation of the adjustment screw 54 by the operation handle 54, the rotation operation of the adjustment screw is also Thus, the distance between the support piece 48 at the tip of the base body and the clamp portion 114c of the clamp piece on the main body side can be arbitrarily adjusted.

As described above, by changing the distance between the support piece 48 and the clamp portion 114c, the width or diameter of the object 130 that can be fixed by the clamp device 110 is diversified. The diversification of the width or diameter of the object 130 makes it possible for the clamp device 110 to handle objects of various widths and diameters without changing the model. Work reliability is improved.

Further, the clamping device 110 is
And the base body 50 are combined in a unit shape, that is, the support piece 48 for fixing the object 130 between the clamp portion 114c of the clamp piece is provided on the clamp device itself. It is not limited to the place where the workbench is located. That is, since the jig for the portable tool can be provided integrally with the portable tool, the range of use of the clamp device 110 can be easily expanded.

Here, as shown in FIGS. 4A and 5, in the clamping device 110 according to another embodiment of the present invention, for example, the force point 114b of the clamp piece and the operating point 118a of the operating lever are connected. Connecting pivot pin 120 and link 116
Each of the pivot pins 126 for pivotally connecting one end of the shaft to the main body 112 has a shape having extended ends 120a and 126a, and a holding spring 70 formed of a tension coil spring is stretched between the extended ends. .

In such a configuration, the operation lever 11
8 is rotated to the unlocking position, the pivot pin 120 is biased and held in the direction of the pivot pin 126 under the biasing force of the holding spring (tensile coil spring) 70, so that the operating lever is It is held in the fixed release position. Accordingly, since unexpected rotation of the operation lever 118 in the fixed direction is reliably prevented, the work reliability and safety can be ensured also from this point. Then, if the application of the operating force to the operating lever is released at an appropriate position without securely rotating the operating lever 118 to the unlocking position, the operating lever is unlocked under the biasing force of the holding spring 70. The workability is further improved because the position is reliably biased and held.

Here, in another embodiment of the present invention, a configuration in which the holding spring 70 is stretched between the pivot pins 120 and 126 is illustrated. However, the holding spring 70 has a pivot pin connecting the point of force 114b of the clamp piece and the point of action 118a of the operating lever.
Since it is sufficient to pull 120 on the main body 112, it is not limited to the locking of the terminal to the pivot pin 126.For example, by holding the corresponding terminal directly to the main body, the holding spring may be stretched. Is also good.

In FIG. 5, illustration of the holding spring 70 is omitted for clarity of the drawing.

The embodiments of the present invention described above are intended to explain the present invention, and do not limit the present invention in any way. Modifications, alterations, etc., within the technical scope of the present invention may also be made. It goes without saying that all are included in the present invention.

[0060]

As described above, according to the clamp device of the present invention, since the external force acting on the operation lever is absorbed by the rotation of the gripping portion with respect to the base, the external force acting in the fixing release direction is absorbed. The rotation of the clamp piece in the corresponding direction under the condition can be reliably prevented, and the unexpected release of the object from being fixed due to the action of the external force is prevented. Accordingly, the workability, the work reliability, and the safety of various works using the clamp device as a jig are easily and surely improved.

Further, since it is sufficient that the slider to which the biasing force of the return spring is applied is slidably provided on the grip portion of the operation lever, the configuration can be prevented from becoming complicated.

Further, it is sufficient to operate the slider only when the operation lever is rotated in the fixing releasing direction, so that the operability when fixing the object is not reduced.

Further, in a configuration in which the base body provided with the support pieces is slidably provided on the main body via the screwing of the adjusting screw and the nut, the distance between the support pieces and the clamp portion can be arbitrarily adjusted. Therefore, it is possible to cope with objects having various widths and diameters without changing the model of the clamp device. Therefore, also from this point, workability and work reliability are improved.

Further, by providing the support piece on the clamp device itself, it becomes possible to provide the clamp device integrally with the portable tool as a jig for the portable tool, so that the range of use of the clamp device can be expanded. Easy to get off.

The pivot pin between the operating point of the operating lever and the force point of the clamp piece has an extended end, and a holding spring made of a tension coil spring is stretched between the extended end and the main body. In this case, the operation lever is held at the fixed release position under the biasing force of the holding spring. Therefore, since unexpected rotation of the operation lever in the fixed direction is reliably prevented, the work reliability and safety can be ensured also from this point. Then, if the application of the operating force to the operating lever is released at an appropriate position without reliably rotating the operating lever to the unlocking position, the operating lever moves to the unlocking position under the biasing force of the holding spring. The workability is further improved because it is securely biased and held.

Further, if the slider is provided so that it can be operated with at least one of the five fingers of the operator's hand holding the grip, the sliding operation can be performed with the finger holding the grip. The clamp device can be operated with one hand, and the operability is further improved.

Further, a predetermined initial position of the gripping portion with respect to the base of the operating lever is a linear position between the gripping portions, and a locking point on the gripping portion side located forward of a connection point between the base and the gripping portion, and If the gripper can be returned to and held in a linear position with respect to the base under the biasing force of a spring means composed of a tension coil spring stretched between the fixed base side and the locking point on the base side, external force Upon release, the gripper automatically returns to the initial position under the biasing force of the spring means, thereby improving operability.

[Brief description of the drawings]

FIG. 1 is an operation diagram of a clamp device according to an embodiment of the present invention in a fixed state and a fixed release state.

FIG. 2 is a schematic perspective view of the clamp device according to the embodiment of the present invention in a fixed state.

FIG. 3 is an operation diagram of the clamp device according to the embodiment of the present invention in a fixed state and in a state in which an external force is applied.

FIG. 4 is an operation diagram of a clamp device according to another embodiment of the present invention in a fixed state and a fixed release state.

FIG. 5 is a schematic perspective view of a clamp device according to another embodiment of the present invention in a fixed state.

FIG. 6 is an operation diagram of a clamp device according to another embodiment of the present invention in a fixed state and a state in which an external force is applied.

[Explanation of symbols]

 10, 110 Clamping device 12, 112 Main body 14, 114 Clamp piece 16, 116 Link 18, 118 Operating lever 18-1, 118-1 Base of operating lever 18-2, 118-2 Gripping part of operating lever 30, 130 Target Object 36, 136 Slider 38, 138 Return spring 44, 144 Grip 48 Support piece 50 Base body 54 Adjusting screw 60 Nut 68 Spring means (Tension coil spring) 70 Holding spring (Tension coil spring)

Claims (7)

[Claims] 1. A clamp device for fixing and releasing an object by a clamp portion of a clamp piece by a movement operation of the clamp piece in a corresponding direction in conjunction with rotation of an operation lever about a fulcrum, The operating lever is formed separately from a base portion on the fulcrum side; and a grip portion on the fulcrum side with respect to the fulcrum. A slider is arranged so as to be non-rotatable in the fixed direction from the initial position, and a slider is slidably disposed on one of the base portion and the grip portion of the operation lever against the biasing force of the return spring. Only when the slider is partially overlapped and engaged with the other side under the slide to the other side against the biasing force of the return spring, the base and grip of the operating lever are released. Clamping device being characterized in that the integrally rotatable direction. 2. A power point of a clamp piece pivotally connected to a fulcrum is pivotally attached to an operation point of an operation lever having a fulcrum as a fulcrum at a connection point with a rotatable link on the side of the main body, and the fulcrum is centered. A clamp device for fixing and releasing an object by a clamp portion of the clamp piece by rotating the clamp piece in a corresponding direction in conjunction with the rotation of the operation lever, wherein the operation lever is provided with a base on a fulcrum side. And a grip part on the side of the force point with respect to the fulcrum; and the grip part can be turned on the terminal of the base from a predetermined initial position with respect to the base in the unlocking direction and from the initial position in the fixing direction. And a slider is slidably disposed on one of the base portion and the grip portion of the operation lever against a biasing force of the return spring, and is provided with a slider against the biasing force of the return spring. Only when the slider is partially overlapped and engaged with the other side under the sliding to the one side, the base and the grip of the operation lever can be integrally rotated in the fixing release direction. And clamping device. 3. A power point of a clamp piece pivotally connected to the main body is pivotally attached to an operation point of an operation lever having a connection point with a rotatable link on the side of the main body as a fulcrum, and the fulcrum is centered. A clamp device for clamping and releasing an object by a clamp portion of a clamp piece by rotating the clamp piece in a corresponding direction in conjunction with the rotation of an operation lever, and a base on a fulcrum side; And a grip portion of the operation lever separately formed in;
The terminal of the base is connected to the base so as to be rotatable in a fixed release direction from a predetermined initial position with respect to the base and is not rotatable in the fixed direction from the initial position. The slider is one of the base and the grip of the operation lever. On one side, the slider is slidably disposed against the biasing force of the return spring, and the slider is partially overlapped with and engaged with the other side under sliding to the other side against the biasing force of the return spring. Only when the operation is performed, the base and the grip of the operation lever are integrally rotatable in the fixing releasing direction, and the operation dial is attached to a base body having a support piece integrally opposed to the clamp part of the clamp piece. An adjustment screw integrally provided with the main body is rotatably provided so as not to move in the axial direction, and the main body is swung with respect to the base body under screwing of an integral nut with the adjustment screw. Clamping device, characterized in that the id linked. 4. A pivot pin for pivotally connecting the operating point of the operating lever and the force point of the clamp piece has an extended end, and the operating lever is provided between the extended end and a predetermined locking point on the side of the main body. 4. The clamping device according to claim 2, wherein a tension coil spring that biases and holds the clamp piece in the fixing releasing direction is stretched as a holding spring. 5. A pivot pin for pivotally connecting the operating point of the operating lever, the point of force of the clamp piece, and the body and the link, each having an extended end, and the operating lever is provided between the extended ends. 4. The clamping device according to claim 2, wherein a tension coil spring that biases and holds the clamp piece in the fixing releasing direction is stretched as a holding spring. 6. A grip that can be gripped by an operator is defined in a predetermined range of a grip portion of the operation lever, and the return spring is biased by at least one of the five fingers of the operator who grips the grip. 6. The slider according to claim 1, wherein the slider is disposed at a position where the slider can be slid against the force.
The clamp device according to any one of the above. 7. A predetermined initial position of the gripper with respect to the base of the operation lever is a linear position between the grips, and a locking point of a gripper side located forward of a connection point between the base and the gripper; The gripper is returned to a linear position with respect to the base under the biasing force of a spring means comprising a tension coil spring stretched between the fixed base side and the locking point.
The clamping device according to any one of claims 1 to 6, wherein the clamping device can be held.