JP2648710B2 - Vice - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vice in which the distance between a fixed jaw and a movable jaw for holding a work can be set efficiently with a simple operation by approximately adjusting to the size of the work. .

[0002]

2. Description of the Related Art The most basic structure of a vise used for clamping and fixing a workpiece is, for example, as shown in a vise, a clamping piece arranged opposite to one side (a movable piece). ) Is provided so as to be able to advance and retreat with respect to the other (fixed piece), a helical shaft is connected to the movable one side, and the helical shaft is rotated by a lever to move the movable piece toward the fixed piece, The work is held between the holding pieces and the position is fixed.

[0003] In the case of such a primitive vise, there is a problem in that when the work to be held is small, the lever must be rotated many times. Therefore, the movable piece is temporarily slid to the position approximate to the size of the work, and the position is fixed, and the movement for the remaining clamping is manually performed by rotating the helical shaft or by hydraulic or air cylinder. A configuration has been proposed in which this is performed by mechanical means. For this purpose, it is necessary to temporarily fix the movable jaw near the holding position, and as one of the means, as shown in FIG. 11, a method of inserting and removing a fixing pin c between the base a and the movable jaw b is adopted. Have been.

Accordingly, an insertion hole c through which the fixing pin is inserted
In the sliding range of the movable jaw, it is necessary to provide a large number 1 on the base side. However, there is also an economic limit for mechanical strength and processing, and it can only be drilled at intervals of about 100 mm at most. Was. Accordingly, there is a case where the movable distance for the remaining clamping is required to be 100 mm or more, and a relatively large stroke hydraulic or air cylinder or the like is required.

[0005]

In view of this situation, the inventor of the present invention tentatively slides the movable jaw and temporarily fixes the movable pin to the base and the movable jaw as described above. Instead of the insertion method, an application of an engagement / disengagement mechanism as shown in FIGS. The mechanism has a rack-like tooth e on one side of the base d in its longitudinal direction.
And a claw member h having a claw piece g that engages with the rack-shaped tooth e is provided on the movable jaw f side that slides the base d. And the movable jaw f is fixed jaw i
When moved in the direction of the arrow, the claw g becomes the angled portion j of the rack-shaped tooth.
(The state of the claw member h indicated by a dashed line on the right side of FIG. 13), and from the fixed jaw i to the movable jaw f.
In the direction in which the movable jaws f are separated from each other, the claw g is engaged with the orthogonal surface k of the rack-shaped teeth e so that the position of the movable jaw f can be fixed (the state of the claw member h indicated by a solid line on the left side in FIG. Claw member h
Is elastically biased.

Therefore, when clamping the work, the movable jaw f is pushed toward the fixed jaw i by a manual operation, and the claws g are moved forward while sequentially climbing over the respective chevrons j of the rack-shaped teeth e. At the position where it is temporarily held. Thereafter, the movable jaw f is advanced by mechanical means, and the work is strongly clamped and fixed in position with the fixed jaw i.

[0007] Conversely, in order to release the clamping of the work, FIG.
Pull the knob m to the state shown by the dashed line in
The pawl member h is pulled to the disengaged position (retracted), and the movable jaw f is manually pulled back as shown by the arrow in FIG.

When the rack-shaped teeth e and the claw members h are provided in this manner, a very fine provisional positioning is achieved by the engagement between the claw members and the rack-shaped teeth, as compared with the case where the conventional fixing pin insertion hole is provided. And the strength of the base is not likely to be reduced as compared with the method of perforating the insertion hole of the fixing pin. Also, there is no trouble of inserting and removing the fixing pin.

However, since the claw member h needs to be engaged with the rack-shaped teeth e, the direction of engagement and disengagement of the claw member is
The direction is orthogonal to the base, and as a result, the following new problem occurs.

[0010] Since the claw member for engaging and disengaging is provided, the claw member and its operating mechanism (such as a biasing spring and an operation knob) protrude from the side of the vise to increase the vise width. When working on the worked workpiece, there is a fear that the worker may be caught by this.

[0011] The operation direction of the pulling operation of the movable jaw when the processing of the workpiece is completed or when it is desired to release the movable jaw from the sandwiched state is orthogonal to the direction of releasing the engagement of the claw member required at that time. Therefore, it is necessary for one worker to perform the pulling operation of the claw member with one hand and the separating operation of the movable jaw with the other hand, which is difficult and can be performed efficiently. There is a problem that it is difficult to do. In addition, it is conceivable to provide a mechanism for locking the disengagement state of the claw pieces. However, if such a lock mechanism is provided, the vise width is further increased, and this becomes an obstructive protrusion, which hinders the work. Will be.

In addition, depending on the type of work, a plurality of such devices may be used in parallel.
At this time, each vise is slidably placed on a long bed, but when the respective vice is slid on the long bed at the time of positioning, the vice may collide with each other. At that time, as described above, if the operation knob or the lock mechanism of the claw member protrudes from the side of the movable jaw, there is also a problem that it is easily broken at the time of collision and causes a failure.

[0013] The present invention solves the above-mentioned problem and makes it possible to easily perform provisional temporary fixing of the movable jaw.
An object of the present invention is to provide a vice excellent in operability, which can perform a releasing operation of a claw member from a rear end side (a base end side of a movable jaw) of the vise and can be compactly configured as a whole. .

[0014]

In order to solve the above problems, the present invention employs the following means. That is, in the vise according to the present invention, a fixed jaw is provided on the front end side of the base, and a pressing portion having a movable jaw is provided on the rear end side so as to be able to advance and retreat with respect to the fixed jaw. In a vice configured to hold a work by pressing a jaw against the fixed jaw, at least one side of the base is provided with rack-shaped teeth along a longitudinal direction thereof,
The rack-shaped teeth have an angled surface perpendicular to the base,
It is constituted by a continuation of an inclined surface inclined from the bottom of the orthogonal surface toward the fixed jaw. Further, a claw member having a claw piece capable of engaging with the orthogonal surface is slidable in a direction orthogonal to the rack-shaped teeth on a holder portion provided on the pressing portion facing the rack-shaped teeth. To be provided. Further, a release lever for releasing the engagement state of the claw piece is provided so as to be operable to be pulled in a direction perpendicular to the sliding direction of the claw member and toward the rear of the base. Further, the claw piece is held in an engaged state with the rack-shaped teeth by a biasing action of a spring so as to prevent the pressing portion from separating from the fixed jaw, and the claw member and the release lever are clawed. The engagement between the claw and the rack-shaped teeth is performed by an operation of sliding the pressing portion provided with the movable jaw toward the fixed jaw or by a pulling operation of the release lever. It is characterized in that it can be released.

In the vise, a front end portion of the release lever projects from the front end of the holder portion, and a spring is slightly compressed between a receiving portion provided on the end side of the protruding portion and the front end of the holder portion. Can be adopted.

In each of the vises, a claw piece operation restricting mechanism is provided on a guide wall provided on a holder portion for restricting sliding of the claw member in a direction perpendicular to the rack-shaped teeth, and on a part of the release lever. Further, a cam groove which is inclined with respect to the axis of the release lever and whose front end is far from the rack-shaped teeth and whose rear end is close to the rack-shaped teeth, is provided in a part of the claw member and can engage with the cam groove. It is good to comprise from an engagement pin. Alternatively, the guide wall provided on the holder, the engaging pin provided on a part of the release lever, and the engaging pin engage with the engaging pin for restricting the sliding of the claw member in a direction orthogonal to the rack-shaped teeth. As described above, it is preferable that the claw member is provided with a cam groove which is inclined with respect to the axis of the release lever and whose front end is far from the rack-shaped teeth and whose rear end is close to the rack-shaped teeth.

In each of the above-mentioned vice, it is preferable to provide a lock mechanism for locking a state of disengagement of the claw by the release lever. The release lever comprises a main body lever which forms a front side thereof and is connected to a claw member via a claw piece operation restricting mechanism, and a knob side lever which forms a rear side and has a knob at a rear end. The side lever is connected to the rear end of the main body lever so as to be rotatable around its axis.On the peripheral surface of the knob side lever, a front end of a guide groove extending in the axial direction of the release lever is provided. It is preferable that an L-shaped restricting groove formed by connecting engaging grooves extending in the circumferential direction is provided, and a restricting pin engaging with the restricting groove is provided on the holder.

In each of the vice, as a pressing mechanism used for tightening the movable jaw, an appropriate means such as a means for rotating a helical shaft manually or by an electric motor, a means using an air cylinder or a hydraulic cylinder, or the like may be used. it can.

[0019]

In the free state, the pawl is held in the engaged state in contact with the orthogonal surface of the rack-shaped teeth by the biasing action of the spring.

When the movable jaw is advanced toward the fixed jaw in this state, the engaging claws collide with the inclined surfaces of the rack-shaped teeth.
Since the claw member is slidably provided on the holder,
The claw member then elastically displaces the spring,
The claw slides in a direction to come off the rack-shaped teeth. By repeatedly pressing the movable jaw and repeating such an operation, the claw pieces sequentially climb over the respective chevrons of the rack-shaped teeth. The predetermined chevron portion of the rack-shaped teeth and the claw piece are naturally engaged by the urging action in the extension direction of the spring, whereby the provisional position of the movable jaw is set at a finer stage. Therefore, the movable jaw can be advanced toward the fixed jaw, and the work can be held between the fixed jaw and the movable jaw.

At the time when the machining of the work is completed,
When the movable jaw is separated from the fixed jaw, the operator standing on the rear end side of the vise pulls the release lever toward the rear of the base, thereby retracting the claw piece from the rack-shaped teeth to change the engagement state. Can be released. That is, the operator who stands on the rear end side of the vise can easily perform the pulling operation of the release lever at his / her hand side.

In particular, when the claw piece operation restricting mechanism is configured to include an engagement pin provided on a part of the claw member and a cam groove provided on a part of the release lever so as to be fitted with the engagement pin. ,
With the pulling operation of the release lever, the engaging pin relatively slides in the cam groove, so that the claw piece can move in a direction to come off the rack-shaped teeth.

This can also be achieved, contrary to the above, by providing an engagement pin on a part of the release lever and a cam groove on a part of the claw member.

In particular, when a lock mechanism for locking the disengagement state of the claw piece by the release lever is provided, the claw member can be fixed to the disengagement state, so that the movable jaw can be held in a free state. Further, the lock mechanism is constituted by the release lever composed of the main body lever and the knob side lever as described above, an L-shaped regulating groove is provided on the peripheral surface of the knob side lever, and the regulating groove is provided in the regulating groove. When the regulating pin is engaged, the lock state can be easily brought into the locked state by a continuous operation of pulling the release lever and rotating the knob-side lever.

[0025]

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, a vice 1 according to the present invention comprises a fixed jaw 7 at a front end side of a base 6 provided with a ridge 5 capable of engaging with engaging grooves 3 and 3 provided on both longitudinal side surfaces of a long table 2.
And a pressing portion 10 having a movable jaw 9 is provided on the rear end side of the vise so as to be able to advance and retreat along the guide rail 11 provided on the upper portion of the base with respect to the fixed jaw 7. The movable jaw 9 is configured to be pressed against the fixed jaw 7 by advancing to clamp the work 12. The base 6 is fixed to the long table 2 by tightening a lock screw 13 shown in FIG.

The pressing portion 10 includes a double-acting air cylinder 1
The movable jaw 9 is advanced by the extension of the air cylinder 15, and the work 12 is held between the movable jaw 9 and the fixed jaw 7. The stroke of the air cylinder may be relatively small because the vise of the present invention employs a provisional position setting mechanism using rack-shaped teeth.

As shown in FIGS. 1 and 3, one side of the base 6 is located at a position slightly depressed inward from the rear end of the base along its longitudinal direction and from the center of the base. The rack-shaped teeth 16 are provided continuously over the portion slightly closer to the fixed jaw, and the chevron 17 of the rack-shaped teeth 16 is formed by an orthogonal surface 19 orthogonal to the base 6 and a bottom portion 20 of the orthogonal surface 19.
, And a continuation of the inclined surface 21 inclined toward the fixed jaw 7 side.

The rack-shaped teeth 16 can be provided on both sides of the base 6, but in that case, a set of corresponding mechanisms such as claw members is required, which leads to an increase in cost.
For this reason, the rack-like teeth preferably need only be provided on one side.

A holder 22 is provided on one side of the pressing portion 10 so as to face the rack-shaped teeth 16. As shown in FIGS. A claw member 23 movable in a direction orthogonal to the rack-shaped teeth 16 and a release lever 25 for releasing the engagement state of the claw member 23 are incorporated.

The claw member 23 is provided with a guide hole 2 penetrating through the holder portion 22 in a direction orthogonal to the rack-shaped teeth 16.
A claw piece 30 is protruded from a distal end surface of a main body 29 which can slide while being in close contact with an inner peripheral surface (guide wall) 27 of the device 6. The claw piece 30 has a flat engaging surface 32 that can abut the orthogonal surface 19 of the rack-shaped tooth chevron 17, and a surface facing the same (a surface opposing the inclined surface 21 of the chevron portion). )
35 is formed as a curved surface so that the claw piece 30 gradually tapers toward the tip.

As shown in FIGS. 3 and 4, the main body 29 is provided with a horizontal split groove 36 which is opened at the distal end, except for the base end side portion. Engagement pin fixing holes 39, 39 extend vertically.

On the other hand, as shown in FIG. 3, the release lever 25 is a bar-shaped parallel to the base 6 which can be pulled in a direction perpendicular to the sliding direction of the claw member 23 and toward the rear end of the base. And is inserted through an insertion hole 40 formed in the holder portion 22 in parallel with the base. In this embodiment, the release lever 25 includes a main body lever 41 and a knob-side lever 42 connected to a rear end thereof.

The main body lever 41 has a stepped cylindrical shape,
A large-diameter portion 43 that fits in the insertion hole 40, and a small-diameter spring insertion shaft 45 that is provided at the front end of the large-diameter portion with a common axis.
The spring insertion shaft 45 is inserted through a through hole 46 provided at the front end of the holder 22 and projects forward of the holder.

The middle portion of the large-diameter portion 43 is cut off at the top and bottom to form an insertion plate portion 49, as shown in FIGS.
As shown in the figure, the insertion plate portion 49 is fitted into the split groove 36. The insertion plate portion 49 is inclined with respect to the axis of the release lever, and its front end 50 is
6, and a rear end 51 is provided with a cam groove 52 as a long groove close to the rack-shaped teeth 16, and both ends of a cylindrical engaging pin 53 passing through the cam groove 52 are provided with the engaging pin fixing holes 3 respectively.
9, 39 (FIG. 4).

The spring insertion shaft 45 has a flange-shaped receiving portion 56 provided on the front end side thereof and a front end face 5 of the holder portion.
7, the coil spring 59 is extrapolated in an initially compressed state. Due to the urging action of the initially compressed coil spring, the engaging pin 53 is in contact with the inner peripheral surface 60 on the rear end side of the cam groove 52 (FIG. 6).

The rear end of the large-diameter portion 43 is shown in FIGS.
As shown in FIGS. 6 to 6, a connection piece 62 is provided which is accommodated in a rectangular opening 61 provided at a position near the rear end of the insertion hole 40. The connecting piece 62 is formed by bending the upper and lower ends of a U-shaped part 66 having a base piece 65 which can abut on the rear surface 63 of the rectangular opening 61 inward, and the wide groove 67 and the narrow groove 6 are formed.
9 has a connecting groove 70 having a horizontal T-shape in a side view.

The knob-side lever 42 has a cylindrical shaft 72 that projects through the narrow groove 69 at the front end of a shaft 71 that is closely inserted into the rear end portion 40a of the insertion hole 40. At the front end, a disk piece 73 existing in the wide groove portion 67 is provided so as to project concentrically with the cylindrical shaft 72. And
Since the disk piece 73 exists in the wide groove portion 67,
The knob side lever 42 is connected to the rear end of the main body lever 41. A disc-shaped knob 75 is provided at the rear end of the shaft 71.
Is protruding.

As shown in FIG. 6, a guide groove 76 extending in the axial direction of the release lever is formed in the peripheral surface of the shaft 71.
Is provided with an L-shaped regulating groove 79 formed by connecting an engaging groove 77 extending in the circumferential direction of the release lever. or,
A tip portion 81 of a regulating pin 80 fixed to the top of the rear end side of the holder portion 22 and protruding downward is fitted into the regulating groove 79 (FIGS. 5 to 6).
Is associated with the pulling operation and rotating operation of the knob side lever 42,
It can relatively move along the regulating groove 79.

When the worker standing on the rear end side of the vise pulls the knob 75 forward from the state shown in FIG.
, The main body lever 41 is pulled rearward while further compressing the coil spring 59. As a result, the engaging pin 53 is guided by the inclined cam groove 52, and as a result, the claw piece 30 is slid in a direction away from the rack-shaped teeth 16 (FIG. 7), and the engaging pin 53 is moved. By being located on the front end 50 side of the cam groove 52 (FIG. 8),
The engagement state between the claw pieces 30 and the rack-shaped teeth 16 is completely released. Thereafter, when the knob 75 is rotated to introduce the distal end portion 81 of the regulating pin into the engaging groove 77 in the circumferential direction (FIG. 8), the release lever 25 is held in that state. The disengaged state of 30 is maintained.
In this state, the movable jaw 9 can move forward and backward with respect to the fixed jaw 7.

In the free state of the vice 1 according to the present embodiment, however, as shown in FIG. 3 and FIG. It is held in an engaged state in contact with the 16 orthogonal surfaces 19.

In this state, the movable jaw 9 is fixed to the fixed jaw 7.
When it is advanced toward the side, the claw piece 30 collides with the inclined surface 21 of the rack-shaped tooth 16. As described above, since the claw member 23 is slidably provided on the holder portion 22, the claw member 23 then moves in the direction in which the claw pieces 30 are disengaged from the rack-shaped teeth 16 while compressively displacing the coil spring 59. Slide (Fig. 7). By repeatedly pressing the movable jaw 9 and repeating such an operation, the claw pieces 30 successively climb over the chevron portions 31 of the rack-shaped teeth. The predetermined chevron portion of the rack-shaped teeth and the claw piece are naturally engaged by the urging action of the coil spring 59 in the extending direction, whereby the provisional position of the movable jaw is set at a finer stage. Accordingly, the pressing portion 10 can be advanced toward the fixed jaw 7, and the work 12 can be held between the fixed jaw 7 and the movable jaw 9 as shown in FIG. 9.

At the time when the processing of the work is completed, etc.
When the movable jaw 9 is separated from the fixed jaw 7, an operator standing on the rear end side of the vice pulls the release lever 25 backward as shown by a dashed line in FIG. Then, the claw piece 30 comes off the rack-shaped teeth 16. That is, by grasping the knob 75 and pulling it forward, the disengagement of the claw pieces and the retraction of the movable jaw can be achieved at the same time. That is, the operator who stands on the rear end side of the vise can easily perform the pulling operation of the release lever at his / her hand side.

Further, a claw piece operation restricting mechanism for connecting the claw member 23 and the release lever 25 is provided with an engagement pin 53 provided on a part of the claw member 23 and a release lever 25 so as to be fitted thereto.
And the cam groove 52 provided in a part of the cam groove 52, the engaging pin 53 relatively slides in the cam groove 52 with the pulling operation of the release lever 25, and the claw piece 30 It can move in a direction perpendicular to the tooth shape.

In this embodiment, the release lever 25 is
In order to adopt a lock mechanism that is composed of a main body lever 41 and a knob-side lever 42, an L-shaped restriction groove 79 is provided on the peripheral surface of the knob-side lever, and the restriction pin 80 is engaged with the restriction groove 79. By the continuous operation of the pulling operation of the release lever 25 and the turning operation of the knob side lever 42, the disengagement state of the claw pieces by the release lever can be locked.

Other Embodiments In the vise according to the present invention, a spring other than a coil spring can be used, and this spring may be built in the holder.

Contrary to the above embodiment, FIG.
As shown in FIG. 7, a configuration in which the cam groove 52 is provided in a part of the claw member 23 and the engagement pin 53 is provided in a part of the release lever 25 may be adopted. In this case, the cam groove 52 is inclined with respect to the axis of the release lever, and its front end 50 is far from the rack-shaped teeth 16 and its rear end 51 is close to the rack-shaped teeth 16. Also in this case, similarly to the above, the pawl piece 30 is held in the engaged state in contact with the orthogonal surface 19 of the rack-shaped tooth by the urging action of the coil spring 59. Further, as shown by a dashed line in FIG. 10, the release lever 25 is pulled backward from the base against the urging action of the coil spring, so that the claw piece 30 is retracted from the rack-shaped teeth 16 and the engagement state is established. Can be canceled.

[0047]

According to the present invention, the vice of the fixing pin pull-in / out method which has to be temporarily fixed at a rough stage and requires the fixing pin to be pulled in and out one by one according to the present invention. In this case, the provisional temporary fixing operation of the movable jaw can be performed in a fine step by the engagement of the pawls with the rack-shaped teeth and with a simple operation of merely pushing the movable jaw. In addition, while provisional positioning can be performed at such a fine stage, there is no danger of lowering the strength of the base as in the fixing pin removal / insertion method.

Further, the engagement state of the claw member with respect to the rack-shaped teeth can be released by pulling the release lever in the direction in which the movable jaw is pulled away from the fixed jaw (back of the base). Therefore, the operation of pulling the movable jaw away from the fixed jaw when the machining is completed or the like requires only one operation of continuing to pull the release lever. Thus, the vice according to the present invention is:
It is possible to easily perform the separation work alone,
Excellent operability.

In addition, the present invention does not employ a configuration in which the operation knob or the urging mechanism of the claw member protrudes from the side surface of the vise, despite the adoption of the engagement structure using the rack-shaped teeth and the claw member. . That is, the direction of the pulling operation of the release lever is orthogonal to the sliding direction of the claw member. From such a thing,
There is no possibility that the projections such as the operation knobs are caught by the operator, and the processing operation can be performed smoothly and efficiently.

In the present invention, the operation knob of the claw member is located on the rear end side of the base. Therefore, when a plurality of vises having such a configuration are used in parallel for a long work, when the respective vises are slid on the long table and positioned, the vises may unexpectedly collide with each other. Even if it does, the failure that occurs when the operation knob protrudes from the side surface of the vise can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a perspective view illustrating a structure in which a claw member and a release lever are connected by a claw piece operation regulating mechanism.

FIG. 4 is a cross-sectional view showing a state in which an insertion plate portion provided on a main body lever constituting a release lever is inserted into a split groove provided on a claw member, and the main body lever and the claw member are connected with an engagement pin. .

FIG. 5 is a perspective view illustrating a knob-side lever constituting a release lever.

FIG. 6 is a cross-sectional view showing a state in which the claw member and the release lever are connected by the claw piece operation regulating mechanism in a state where the claw member is engaged with the rack-shaped teeth.

FIG. 7 is a cross-sectional view for explaining disengagement of a claw and a rack-shaped tooth when a pressing portion is slid toward a fixed jaw.

FIG. 8 is a cross-sectional view showing a state in which the engagement between the claw pieces and the rack-shaped teeth is released by pulling the release lever.

FIG. 9 is a side view showing a state where the movable jaw is moved forward and temporarily fixed.

FIG. 10 is a cross-sectional view illustrating another embodiment in which the claw member and the release lever are connected by a claw piece operation regulating mechanism.

FIG. 11 is a perspective view for explaining a conventional vice of a fixing pin removal / insertion method.

FIG. 12 is a plan view illustrating a vise to which an engagement / disengagement mechanism is applied.

FIG. 13 is a cross-sectional view illustrating a provisional temporary fixing mechanism of the movable jaw in the vise.

[Explanation of symbols]

 Reference Signs List 1 vice 6 base 7 fixed jaw 9 movable jaw 10 pressing portion 16 rack-shaped tooth 17 chevron 19 orthogonal surface 21 inclined surface 22 holder portion 23 claw member 25 release lever 26 guide hole 27 guide wall 32 engaging surface 41 main body lever 42 knob side Lever 52 Cam groove 53 Engagement pin 59 Coil spring

Claims (6)

(57) [Claims] A fixed jaw is provided on a front end side of a base, and a pressing portion provided with a movable jaw is provided on a rear end side of the base so as to be able to advance and retreat with respect to the fixed jaw, and the movable jaw is moved forward by the pressing portion. In a vice configured to hold a work by pressing against a fixed jaw, a rack-shaped tooth is provided along at least one side of the base along a longitudinal direction thereof, and a mountain shape of the rack-shaped tooth is orthogonal to the base. And an inclined surface that is inclined from the bottom of the orthogonal surface to the fixed jaw side. The holder is provided on the pressing portion and faces the rack-shaped teeth. A claw member having a claw piece capable of engaging with a surface is slidably provided in a direction orthogonal to the rack-shaped teeth; and a release lever for releasing the engagement state of the claw piece is provided by the claw member. Orthogonal to the sliding direction of The hook is engaged with the rack-shaped teeth by a biasing action of a spring so as to prevent the pressing portion from separating from the fixed jaw so as to be able to be pulled in a direction toward the rear of the base. The claw member and the release lever are connected by a claw piece operation restricting mechanism, and an operation of sliding a pressing portion provided with the movable jaw toward a fixed jaw, or a pull operation of the release lever, A vice characterized in that an engagement state between the claw pieces and the rack-shaped teeth can be released. 2. A front end portion of the release lever protrudes from the front end of the holder portion, and a spring is slightly compressed between a receiving portion provided on the end side of the protruding portion and the front end of the holder portion. The vise according to claim 1, wherein the vise is mounted. 3. A guide wall provided on a holder portion and a release lever provided on a part of a release lever, wherein the claw member operation restricting mechanism restricts sliding of the claw member in a direction perpendicular to the rack-shaped teeth. A cam groove which is inclined with respect to the axis of the release lever and whose front end is far from the rack-shaped teeth and whose rear end is close to the rack-shaped teeth; and an engagement pin provided on a part of the claw member and capable of engaging with the cam groove. 2. The vise according to claim 1, wherein the vice is constituted by: 4. A guide wall provided on a holder portion and an engagement provided on a part of a release lever, wherein the claw piece operation restricting mechanism restricts sliding of the claw member in a direction orthogonal to the rack-shaped teeth. A cam which is inclined with respect to the axis of the release lever and whose front end is far from the rack-shaped teeth and whose rear end is close to the rack-shaped teeth, provided on a part of the claw member so as to engage with the engagement pin. 2. The groove according to claim 1, wherein
The described vice. 5. The vise according to claim 1, further comprising a lock mechanism for locking a disengagement state of the claw pieces by the release lever. 6. A release lever comprising a main body lever which forms a front side thereof and is connected to a claw member via a claw piece operation restricting mechanism, and a knob side lever which forms a rear side and has a knob at a rear end. The knob-side lever is connected to the rear end of the main body lever so as to be rotatable around its axis. The front end of a guide groove extending in the axial direction of the release lever is provided on the peripheral surface of the knob-side lever. An L-shaped restricting groove formed by connecting engaging grooves extending in the circumferential direction of the release lever, and a restricting pin provided on the holder portion so as to engage with the restricting groove. The vise according to claim 4, wherein