JPS6029422Y2 - Movable jaw type hand vise - Google Patents

Description

[Detailed description of the invention] Adjustment of an adjusting screw rod, which comprises a fixed jaw and a movable jaw that approaches or moves away from the fixed jaw to sandwich an article, and the movable jaw is adjustable and supported on the main body of the device. After bringing the article to be sandwiched close to an appropriate position depending on the size of the article, by tightening the movable handle whose proximal end is pivotally attached to the movable jaw, the operating end is pivotally attached to the movable handle, and the adjusting screw is tightened. A push rod, whose proximal end is supported at the tip of the rod, is compressed between its pivot joint and an adjusting screw rod (this action will be explained in detail later) to urge both jaws in the proximal direction. A scissors tool that forcefully pinches objects between the jaws has come to be marketed as a Vise Clip (registered trademark) or a hand vise.

This tool is prized for its strong grip, but it has the inconvenience of being somewhat difficult to handle, and if handled incorrectly, it may lead to an unexpected accident as will be explained later.

In order to eliminate the above-mentioned problems, this invention makes it possible to adjust the distance between the scissor surfaces between the fixed jaw and the movable jaw so that large and small items can be gripped, and even if the distance between the scissor surfaces is adjusted, It is designed to always generate a constant gripping force.

Many conventional wrenches are known in which one side of the scissor face is adjustable to accommodate the size of the object to be pinched, but all conventional wrenches have a fixed jaw side that can be manually adjusted. Therefore, if this product is used in a product that generates gripping force through a toggle action, such as the product of this invention, it will be difficult to adjust the jaw distance (
(manual) errors may cause the dangers described below.

However, in the present invention, the above object is distantly achieved by configuring the scissors surface on the rotating head side to be manually adjustable.

The reason for this will be explained in detail later. The hand vise of the present invention will be described below with reference to the accompanying drawings.

In Fig. 1, reference numeral 1 denotes a fixed jaw, which forms one side of a tightening bundle, and has a proximal end 2 of a vice body 2 having a roughly U-shaped cross section.
1, it is firmly fixed by welding or the like.

3 is a movable jaw device of the present invention, which includes a rotary member 31 whose one end edge is pivoted near the base of the fixed jaw 1 by a first pivot 30 positioned on the fixed jaw 1; It is separated from the movable jaw 32, which is located at the same position and is supported by a rotating member 31 so that the distance between the fixed jaw 1 and the fixed jaw 1 can be adjusted.

The front edge 33 of the rotating member 31 that supports the movable jaw 32 extends linearly from near the base end of the tooth-shaped scissor surface 11 of the fixed jaw 1 in a substantially perpendicular direction, and expands inside into a cylindrical shape. A guide groove 34 is provided.

Further, the rotating member main body is provided with a rectangular transparent window 35 having one side parallel to the front edge 33, and the worm 4
is rotatably supported by a rotating shaft 41 screwed parallel to the front edge 33.

On the other hand, the proximal end of the movable jaw 32 is integrally formed with a fitting part 36 that extends long up and down the jaw along the front edge,
Its end edge is formed into a cylindrical enlarged portion that can fit into the expanded cylindrical portion of the guide groove 34, and has rack teeth 37 exposed in the transparent window 35 and engaged with the worm 4.

The fixed jaw 1 is provided with a through hole 12 into which the fitting portion 36 can enter, as shown in plan view in FIG. 1b.

In this embodiment, the pivot portion 31' of the rotating member 31 is also pivotally supported within the through hole 12.

A proximal end 51 of the movable bundle 5 forming the other of the gripping bundles is located at a position of the rotating member 31 where the first pivot 30 and the movable jaw 32 can form a triangle.
is pivoted.

As shown in FIG. 1c, the portion of the movable bundle 5 near the pivot point has a cross-sectional shape made of a bent U-shaped sheet metal, and the actuating end 61 of the actuating push rod 6 of a certain length is supported by the third pivot shaft 60. pivot.

The third pivot 60 is provided at a position slightly offset from the pivot 50 at the proximal end of the movable bundle 5 toward the gripping end 52 thereof.

The clamping end of the vice body 2 is squeezed into a cylindrical portion 22, and the inner surface thereof is formed into a screw hole 23.

Through this screw hole 23, the fine adjustment push rod 7 provided with a male threaded portion 71 is screwed.

The operating push rod 6 has a free end formed into an abutment portion 62 supported by the tip of the fine adjustment push rod 7.

Reference numeral 24 denotes a tension spring tensioned between a latch 25 protruding from the vice body 2 and a spring hole 26 formed in the rotating member 31, and the rotating member 31 is rotated about the first pivot 30. 1st
This force is applied via the second pivot shaft 50 and the third pivot shaft 60 to press the contact portion 62 of the actuating push rod against the tip 72 of the fine adjustment push rod 7. to work.

Reference numeral 65 denotes a claw piece for reliably maintaining engagement between the contact portion 62 and the tip of the fine adjustment push rod.

At an intermediate position of the movable bundle 5, a return lever 8 is installed, which is enclosed in a bundle having a U-shaped cross section and whose portion near the compression 81 is pivotally supported by a pin 80. A protrusion 63 is formed opposite to the depression 81 of the return lever 8 .

64 is a recessed portion for avoiding the latch 25.

The pusher 81 of the return lever 8 has a pusher surface that can overlap with the U-shaped back surface of the movable bundle 5, and the other end operating portion 82
1 and the back surface of the movable bundle 5 are in an overlapping state, the gripping end 52 of the movable bundle 5 is formed to be slightly flat.
When the operating portion 82 is pushed toward the gripping end 52 of the movable bundle 5, the operating portion 82 is brought into close contact with the back surface of the movable bundle 5. The compressor 81 is made in such a shape that it can be pushed out largely clockwise in FIG. 1 with the pin 80 as the axis.

The relationship between the protrusion 63 and the return lever 8 will be explained later.

Before explaining the operation and operation of the hand vise of the present invention having the above-mentioned configuration, the operation and operation of the conventionally known hand vise shown in FIGS. 2 to 4 will be explained.

In FIGS. 2 to 4, parts given the same reference numerals as in FIG. 1 are equivalent to those in FIG. 1, and have the same functions.

The difference between the conventional hand vise (the latter) and the product of the present invention (the former) is that the movable jaw 300 is not divided into a rotating member and a movable jaw like the former, and the fine adjustment push rod 7 of the former The latter setting screw rod 700 has a different role in use.

The movable jaw 300 is rotatable about a first pivot 30, and its scissor surface 39 and the first pivot 30 and second pivot 50 form the vertices of a triangle.

The setting threaded rod 700 has an adjustment threaded groove 7 along its entire length.
01, and each time you use it, hold the knob 73 and turn the shaft A-
It is for adjustment in direction B (Fig. 3).

Since the other parts are the same as the former, explanation of the structure will be omitted.

FIG. 3 is an operational explanatory diagram partially diagrammatically illustrating the same structure (the return lever 8 is omitted).
The contact point C between the tip 72 of the setting screw rod is pushed in the B direction of the screw shaft A-B by the force S of the tension spring, and when the setting screw rod is pulled out for a long time, the contact point C moves in the Ca direction. As a result, the movable jaw opens wide as shown at 300a, and the pulling force of the tension spring 24 generates a force that pushes the third pivot outward, causing the rotating handle to open wide as shown at 5a.

When holding an object between both jaws, in order to hold a large object W as shown in Fig. 3, turn the knob 73 at each end to move the setting threaded rod 700, move the contact point C in the direction of Ca, and press one of the ends. The object W held in the other hand is brought between the wide open movable jaw 300a of the hand vise holding the handle with the other hand, and the fixed jaw 1, and when the handle is squeezed moderately, the object W is placed between the two jaws. be held between.

Then, the object is released, and the setting screw rod 700 is moved forward and backward by rotating the knob 73 with that hand to adjust the contact point C to be set at an appropriate position.

In this adjustment, in this type of hand vise (wrench), the operating push rod 6, and therefore the third pivot 60, is opposite to the vice body 2 with respect to the limit line XX connecting the second pivot 50 and the contact point C (Ca). When the third pivot 60 trips beyond the limit line XX from the reset state on the side (shown by the chain line in FIG. 3), the operating push rod 6 rotates the second pivot 50 on the movable handle 5. The gripping force is generated by a toggle action that pushes the member 31 in the direction.

The height of the protrusion 63 of the actuating push rod is made such that it abuts against the back surface of the movable handle 5 via the compression 81 of the return lever immediately after the third pivot 60 crosses the limit line.

Therefore, to adjust the contact point C, move the contact point C in the direction A-B depending on the size of the article to be sandwiched, and find the appropriate reset position where the position of the third axis is not too far away from the limit line X-X. When it is necessary to locate and push the contact to the position shown in FIG. 3C, the movable jaw 300 DEG third pivot 60 and the movable handle 5 are respectively in the position shown in solid lines.

Finding such a position can be done by grasping both handles.
This is done depending on the state in which the handles are tightened to a moderate degree and the degree to which both handles are opened.

When the third pivot is in the proper reset position 60, the protrusion 63 of the actuating push rod faces closely the depression 81 of the return lever 8 which overlaps the back surface of the movable handle 5.

Next, when the movable handle 5 is squeezed a little strongly, the movable handle 5 rotates about the second pivot 50 in the counterclockwise direction in FIG.
trip to the side, position 60b slightly beyond the limit line
When reached, the protrusion 63 collides with the depression 81 of the return lever, fixing the entire device in that position.

The displacement of the third pivot 60 actually moves the upper movable jaw along the chain line 300.
A displacing force is generated as shown in b, but there is no object W between the jaws.
This force compresses the actuating push rod 6 between the third pivot 60 and the contact point C, and on the other hand presses the movable jaw against the article W.

This force is extremely strong, and a gripping force of over 1 ton can easily be obtained.

In order to release the trapped article, the operating portion 82 of the return lever 8 may be pulled toward the gripping end 52 of the movable handle 5.

The force compressing the operating push rod 6 when the third pivot 60 is inside the line X-X (line X in other figures) forces the movable handle 5 in a counterclockwise direction about the second pivot 50. However, a component force is generated that presses the apex of the protrusion 63 against the back surface of the movable handle 5 via the compression 81, but with the above operation of the return lever 8, the compression 81 resists the component force. The protrusion 63 is pushed out from the back surface of the movable handle 5.

As a result, the movable handle 5 is pushed by the pin 80 and opens.
Return the third pivot 60 to the outside of line XX.

The movable jaws 300 are thus opened and the article W is released.

If the article to be sandwiched is small as indicated by W' in FIG. 4, it is necessary to push the setting screw rod 700 further and move the contact point C position in the direction A in FIG. 3 for setting.

When the setting screw rod 700 is screwed in while gripping the movable handle 5 fairly tightly, as can be seen by observing FIG.
The position of the contact point C may be set such that the distance between the third pivot 60 and the line X becomes considerably large.

In this state, when the gripping end 52 of the movable handle 5 is further tightened, a considerably large amount of displacement is applied until the third pivot shaft 60 is oriented inwardly beyond the line X, and the operating push rod 6 is
As a result, an excessive compressive force is applied to the fixed jaw 1, and the fixed jaw 1 breaks.

Line 13 in FIG. 4 shows the normally occurring fracture surface of fixed jaw 1.

As explained above, with conventional hand vises, it is necessary to use both hands at the same time to adjust the tightening of the handle and use the other hand to set the position of the setting screw rod before gripping the item, making one-handed operation much easier. There is an inconvenience that it cannot be done.

Or, it is necessary to reset the setting threaded rod every time the items to be sandwiched change.

Furthermore, if a broken jaw occurs while working at height, the broken pieces of the jaw and the object it was trying to clip will fall, posing the danger of not only damaging the tool but also causing an unexpected accident.

The hand vise of the present invention can completely eliminate the above-mentioned drawbacks.

Returning to FIG. 1, by appropriately operating the movable handle 5 and the fine adjustment push rod 7, the object sandwiched between the scissor surface 38 of the movable jaw 32 at an arbitrary position and the scissor surface 11 of the fixed jaw 1 is Once the position of the fine adjustment push rod 7 is adjusted and set to a position where the toggle device is pinched with an appropriate force when tripped (this setting is referred to as 1 gripping force setting), from then on, it is possible to adjust the position of the fine adjustment push rod 7 to a position where it is pinched with an appropriate force when the toggle device is tripped (this setting is referred to as 1 grip force setting). No matter how the position of the movable jaws 32 relative to the rotary member 31 is changed and adjusted in order to grip an item, the same gripping force will always be obtained when the movable handle 5 is gripped strongly and tripped. , there is no need to adjust the fine adjustment push rod each time.

Therefore, in order to use the hand vise (wrench) of this invention, hold the object between your jaws with one (usually left) hand,
When the hand vise main body 2 and the movable handle 5 are grasped with the other hand, the thumb of that hand becomes in a state where the worm 4 can be operated.

Then, turn the worm 4 and insert the scissors surface 11 of both jaws 1 and 32.
．． The movable jaw 32 is positioned at a position where the scissors 38 lightly touch both sides of the article (a position where the distance between the two scissor surfaces is approximately equal to the thickness of the article).

Since the item to be pinched is stably supported with one hand,
This operation is extremely easy, and there is no danger of the article wobbling or even falling off when adjusting the setting screw 700 using both hands, as in conventional products.

When the toggle mechanism is tripped by gripping the handle firmly, the object is gripped with a certain amount of force determined by the grip force setting.

Next, the reason why the above effect occurs will be explained.

The reason why this type of hand vise exhibits an extremely strong gripping force is that when the toggle mechanism trips from the pre-trip state, the third pivot is displaced from the 60a side to the 60b side, so that the actuating push rod 6 is moved to the second pivot. 50 to generate a force that causes the rotating member 31 to rotate by a certain angle about the first pivot 30, and when there is an object between the jaws, this force compresses the operating push rod. As mentioned above, the object becomes a force and the object is gripped as a reaction force.

Setting the gripping force in the product of the present invention is to define the position of the third pivot 60 on the verge of tripping to the optimum position shown in FIG. 3.

That is, when tripped from this state, the rotating member 3
The angle at which 1 attempts to rotate is always constant.

In other words, it remains constant regardless of the position of the movable jaw 32.

Needless to say, the relative positions of the fixed jaw 1 and the rotating member 31 remain unchanged.

Therefore, the scissor surface 11 of the immovable fixed jaw 1 and the scissor surface 3 of the movable jaw 32 on the rotary member 31 in the proper position before tripping.
If the distance between the handle and the handle 8 is adjusted to be approximately equal to the thickness of the article as described above, a constant gripping force can always be obtained.

If the scissor surface on the rotating member side, that is, the movable jaw side, is fixed with respect to the rotating member, and the scissor surface on the fixed jaw 1 side is adjustable, the distance between the two scissor surfaces should be adjusted according to the distance between the two scissor surfaces. Adjustment according to the thickness is performed based on the movable jaw which is in an unstable state before tripping, that is, in a swingable state, and the operation is quite troublesome.

According to the movable jaw type hand vise of this invention as described above, once the gripping force is set by appropriately adjusting the position of the fine adjustment push rod 7, the movable jaw 3 is adjusted according to the size of the article.
A constant gripping force can be obtained regardless of the change in the position of item 2, and there is a marked difference in ease of use compared to conventional products, and it has the effect of completely eliminating the dangers of the conventional products. .

In addition, the fine adjustment push rod 7 of the present invention is useful for restoring the grip force when the pivot part is worn out and the grip force has decreased due to long-term use, and the grip force can be adjusted to some extent depending on the purpose of use. It can also be useful when trying to strengthen or weaken.

Incidentally, since this fine adjustment push rod 7 is not used all the time, its outer end can be cut off as shown in FIG. 5 and adjusted using a ten or minus type screwdriver.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the product of the present invention, showing the handle portion in cross section, and Figures 1a and 1b are side views showing one embodiment of the present invention.
Figures 1c and 1d are cross-sectional views taken along lines C-C and D-D, and Figure 2 is a side view of the conventional product as seen in Figure 1. Figure 3 is an explanatory diagram of its operation, Figure 4 is a side view of the conventional product in a state where different articles are sandwiched,
FIG. 5 is a side view showing a modification of the product of the present invention. 1...Fixed jaw, 2...Vise body, 3
...Movable jaw device, 5...Movable handle, 6...Operating push rod, 7...Fine adjustment push rod, 8...Return lever .

Claims (1)

[Scope of utility model registration request] A vice body 2 to which the fixed jaw 1 is fixed is pivoted at one end by a first pivot 30 positioned near the proximal end of the fixed jaw 1, and the first
a second position forming a triangle with the pivot 30 and the movable jaw 32;
a movable jaw device 3 having a pivot 50 and a proximal end 5 at the second pivot;
1, a third pivot 60 provided at a position close to the second pivot 50 of the movable handle 5, an operating end 61 pivotably attached to the third pivot 60, and The abutment part 62 at the end consists of an operating pushrod 6 of a certain length, which has an abutment waist protrusion 63 at the tip of a fine adjustment pushrod 7 screwed to the gripping end of the vise body 2, and a return lever 8. In the hand vise, the movable jaw device 3 is connected to the first pivot 30.
It consists of a rotating member 31 which is pivotally attached to the vice main body portion and supports a second pivot shaft 50, and a movable jaw 32 which is movably supported by the rotating member 31, and the rotating member 31 is connected to the fixed jaw. 1, the movable jaw 32 has a straight front edge 33 extending from near the proximal end of the fixed jaw 1 substantially at right angles to the scissoring surface 11 of the fixed jaw 1, while the movable jaw 32 has a scissoring surface 11 facing substantially parallel to the scissoring surface 11 of the fixed jaw 1. A fitting part 3 having a surface 38 and having a long proximal end
6, supports the fitting part 36 so as to be movable back and forth along the front edge 33, and is pivotally supported on the rotating member 31 by rack teeth 37 provided on the fitting part 36. 4, the rotating member 31
A movable jaw type hand vise characterized in that a movable jaw 32 is coupled to the fixed jaw 1 so as to be movable back and forth, and the fixed jaw 1 is provided with a through hole 12 through which the fitting portion 36 can enter.