CN1012482B

CN1012482B - Self-adjusting utility pliers

Info

Publication number: CN1012482B
Application number: CN 85107506
Authority: CN
Inventors: 威廉·A·沃赫特
Original assignee: WILLIAM A WARHEIT
Current assignee: WILLIAM A WARHEIT
Priority date: 1985-10-10
Filing date: 1985-10-10
Publication date: 1991-05-01
Also published as: CN85107506A

Abstract

The present invention relates to a pair of practical pliers operated by a single hand, which can automatically adjust to tightly clamp the positions of work pieces with any sizes determined by the maximum opening of a jaw of the pliers.

Description

Self-adjusting utility pliers

What the present invention talked is the adjusting utility pliers that symphyogenetic tooth-pawl structure is arranged, the hand vice of particularly self-regulated pattern.Hand vice of the present invention by user's one-handed performance, can make its jaw present the firmly state of holding workpiece immediately automatically when contacting with workpiece.

Some United States Patent (USP)s have been described some hand vice, and their characteristics are to have such as the bar tooth, shake pawl, tooth piece and self-regulated jaw and carry out the action that it desires to think.For ease of content, please note down the United States Patent (USP) of column number: 1,651,216 with reference to these open files; 2,531,285; 2,988,941; 4,269,089; 4,438,669; And DRP: 958,459 and 1,060,330.

Self-regulated adjusting utility pliers of the present invention comprises first and second long handle element, in the end of their each elements first and second jaw is arranged respectively; A vice jaw part has an elongated slot, and this groove has relatively and interconnective sidewall, and a side of this groove is a slideway, and opposite side has a series of protrusions or tooth; One shakes pawl is rotatably connected to another vice jaw part, and what this long handle element was fitted together is that fixing apparatus is limited in this elongated slot by one.

One spring-supported control arm links to each other two long handle elements place in the middle of their two ends, and always orders about this side of shaking pawl and this slideway generation CONTACT WITH FRICTION, and this is in two long handle elements and their jaw to separate relative position.When this long handle element and jaw are moved towards one another, and jaw one contact workpiece, control arm just makes this shake pawl and leaves slideway and go to locking mesh position between adjacent two teeth.

Catalogue of the present invention, provide the adjusting utility pliers of self-regulated pattern;

Another purpose provides the self-regulated hand vice of one-hand operation;

Another purpose provides the self-regulated hand vice that manufacturing expense is low, the life-span is long again.

In commentary that reference the following drawings is carried out and after with reference to appended claims, these and other purpose of the present invention will be more obvious.

Fig. 1 is the side view and the partial sectional view of self-regulated hand vice of the present invention;

Fig. 2 is hand vice shown in Figure 1 partial side views, but represents that some part is in and uses and operate consistent diverse location;

Fig. 3 is similar to Fig. 2, some part of representing hand vice shown in Figure 1 before clamping workpiece with use consistent location;

Fig. 4 is a 4-4 cross-sectional view among Fig. 1;

Fig. 5 is the partial top view of hand vice shown in Figure 1, and what specially represent jaw is fitted together is fixing apparatus;

Fig. 6 is and the part of the structural similarity shown in Figure 1 view of tossing about that the another kind of device of the control arm of the hand vice that open is being supported in expression, obtains the function of needed automatic adjusting and folder workpiece whereby.

Please referring to accompanying drawing, self-regulated adjusting utility pliers of the present invention is by total label 10 expressions now, and its part comprises the first long handle element 12, and this element 12 comprises jaw 12a, handgrip 12b and intermediate cross-section lightening holes 12c.The second long handle element of these hand vice represents that with label 16 it comprises jaw 16a, handgrip 16b and intermediate cross-section lightening holes 16C.

One elongated slot 20 is arranged in the lightening holes 16c of cross section, and this groove has interconnective sidewall, and its part is a slideway 22, and its another part is series of projections or the tooth 24 on long one section sidewall.

Pawl is shaken at lightening holes 12c place in the cross section, represents with label 26, utilizes the bolt 28 that its pillar is stretched out groove 20, will shake pawl 26 and be installed in rotation on this lightening holes 12c place, cross section, shakes pawl 26 and is fixed on its operating position so that make.This bolt 28 as shown in Figure 5 combines with packing ring 30 and nut 32, as the device that two cross section lightening holes 12c and 16c are fitted together.Shaking pawl 26 has plane 34, prominent face 36 and shakes pawl point 38, will be commented them later on.

Utilize trunnion 42 upper end of control arm 40 to be rotatably connected to the middle part, two ends of the first long handle element 12.

As Fig. 1 and shown in Figure 6, the lower end of control arm 40 is connected with guide block 44, and guide block 44 is loaded in the circular hole 46 among the handgrip 16b of the second long handle element 16, one helical spring 48 also is contained in this circular hole, the one end links to each other with guide block 44 simultaneously, its other end links to each other with adjustment screw 50, and this adjustment screw is contained among the handgrip 16b of the second long handle element 16, and these helical spring 48 these devices are used for increasing selectively or reduce to act on the spring tension on the control arm 40.

Be readily appreciated that

long handle element

12 and 16 will make control arm 40 move down and stretch in the circular hole 46 when close to each other, and compression helical spring 48.Unclamp long handle element 12 and at 16 o'clock, will make helical spring 48 recover its original drifts, the result, each jaw 12a moves to 16a and separates relative position.

As shown in Figure 1 and Figure 4, also have second small sircle hole 52 in handgrip 16b, it is parallel to and near the top of circular hole 46, the guide passage as leading ball 54 is contained on the control arm and lead ball 54, and near its lower end.

A kind of modification of these self-regulated hand vice is shown among Fig. 6, and except that helical spring 48, it also comprises a torsion spring 60, and it is contained on the trunnion 42, and is connected for example 58 places with control arm 40, is connected for example 60 places with the first long handle element 12.

Briefly explain the working condition of this self-regulated adjusting utility pliers now.Control arm 40 and helical spring 48 always order about together first and second long handle element 12 with 16 and their jaw 12a separately be in 16a and separate relative position, when being in this position, then act on the pressure that has backward, make the plane 34 of shaking pawl 26 keep CONTACT WITH FRICTION with slideway 22 by bolt 28.This form can make jaw move towards one another and remove.Simultaneously, do not allow to shake pawl 26 and produce interference with tooth 24.

When the first and second

long handle elements

12 and 16 are moved towards one another, thereby make its jaw separately clamp workpiece 62 inch, 40 of control arms move down, and compression helical spring 48, spring 48 then will make a pressure forward act on the bolt 28, thereby make and shake pawl and contact with the hole wall that tooth 24 is arranged, when producing this kind situation, prominent 36 in face slips over two teeth 24, makes to shake the pawl rotation, then its pawl point 38 just enters the centre of two adjacent teeth 24, and workpiece 62 is produced firm chucking power.

Usually the spring 48 that is loaded on handgrip 16b is pressed in the approach end of control arm 40, and control arm 40 is turned right around leading ball 54, and as shown in Figure 1, the active force that therefore is pressed in pin 42 retreats long handle element 12, thereby makes

jaw

12a and 16a be flared to the most unlimited position.The rotational motion of above-mentioned control arm 40 is accompanied by the corresponding rotational motion of long handle element 12, therefore shakes the whole length of pawl 26 downward slide through holes 20, and as shown in Figure 1, but it is parked in position shown in Figure 2, so it does not mesh with any tooth 24.

The user catches handgrip 12b and 16b, and hand is closed up, and makes two handgrips press close each other, so handles hand vice 10 and just can clamp workpiece.This action makes long handle element 12 around trunnion 42 clockwise directions rotations, and therefore, jaw 12a moves to jaw 16a, shakes pawl along groove 20 upwards slippages, as shown in Figure 1, contacts with workpiece and till when stopping until two jaws.Cross section lightening holes 12c that two jaws and contacting of workpiece can cause

long handle element

12 and 16 and the rotational motion between the 16c, this rotational motion reaches shakes pawl 26, makes it leave the slideway in hole 20 and rely on the opposite walls of a series of teeth 24.The crown of tooth 24 and anodontia wall is produced an acting surface altogether, prominent face 36 is in contact with it, makes to shake the rotation of pawl clockwise direction, so its crown 38 and teeth groove engagement, produce a locking effect, prevent further sliding motion between cross section lightening holes 12c and the 16c.Continue to press handgrip 12b and 16b with hand, will make

jaw

12a and 16a clamp workpiece tightly.

At workpiece under the especially little or thin situation, the prominent face 36 that shakes pawl 26 will lean against on the zone of 20 upper ends, hole and slide, and it be rotated around trunnion, and its pawl point 38 is embedded in the nearest teeth groove of teeth 24.

From as can be known to the above-mentioned introduction of hand vice 10, shake pawl 26, bolt 28 and shake pawl and the interaction of special shape groove 20, constituted long handle element 12 and the 16 solid lock meanses of between cross section lightening holes 12c and 16c, locating to connect, therefore, be used on handgrip 12b and the 16b with the masterpiece that closes up of setting about,

jaw

12a and 16a be close to each other, thereby with workpiece clamp therein.This solid lock means comprises that the suitable cross section lightening holes 12c relative cross-section lightening holes 16c that makes does to slide and the structure of rotating, thereby in the operating process of folder workpiece, makes

jaw

12a and 16a close by this.And then, should the cross section lightening holes be pinned solid lock means, prevent further slip, and contacting along with jaw and therebetween workpiece, cause that simultaneously one rotatablely moves, act on the active force of the ever-increasing hand on the handgrip afterwards, the rotational structure by solid lock means becomes the chucking power that jaw is clamped workpiece.

Discharge the palm clamp pressure that acts on the handgrip, can make spring 48 recover its original state, and make control arm 40 around leading ball 54 rotations (can be called and open action automatically), jaw moves to whole open positions, so that be used for adjusting automatically nut, pipe or other object of the ultimate range that clamping is any when being equal to or less than jaw and opening fully next time.

Though introduced the present invention in conjunction with a preferred embodiment and one modification, will be understood that, can also make other modification or improvement, and not break away from spirit of the present invention and scope because those one skilled in the art that to be these professional understand easily.Such improvement or modification should be considered as the extent of competence of the present invention and attached claim.

Claims

1, a kind of self-regulated adjusting utility pliers, it comprises:

A pair of have jaw (12a, 16a), handgrip (12b, 16b) and intermediate cross-section lightening holes (12c, rigidity long handle element (12,16) 16c);

It is characterized in that it also comprises:

One on second long handle element (16) the cross section lightening holes (16c), and the elongated slot (20) of series of projections branch (24) is arranged on the one sidewall;

One is fixed on the cross section lightening holes (12c) still, and pass the securing member (28) of elongated slot (20), this securing member (28) is at cross section lightening holes (12c, 16c) locate long handle element (12,16) is coupled together, and make the close initial grip of handgrip on two handgrips (12b, 16b) along with being applied to, allow jaw (12a, 16a) close to each other facing to the workpiece between the jaw (12a, 16a) with the slip effect;

One is connected with securing member (28) rotationally, and shake pawl (26) in position cutting elongated groove (20), it is suitable for meshing along ledge, thereby, along with contacting of jaw (12a, 16a) and workpiece, stop the slip effect between the long handle element (12,16), and, allow long handle element (12,16) capable of pivoting relative to each other along with the lasting grip force that acts on subsequently on the long handle element (12,16);

One is extended between long handle element (12,16), and the one end is connected on the long handle element (12,16) slidably, and the other end is pivotally connected to the control arm (40) on another long handle element (12,16); With

One is arranged on the long handle element (12,16), constantly to control arm (40) biasing, control arm is rotated around described another long handle element (12,16), and promotes jaw (12a, 12b) and slip off mutually, arrives the spring (48) of a fully open position.

2, self-regulated adjusting utility pliers as claimed in claim 1, it is characterized in that: this elongated slot (20) comprises two long sidewalls at regular intervals (22), shake pawl (26) but between the two side and opposing sidewalls rotate, and can or throw off with the first side wall engagement, this shakes pawl and also has one generally to contact with second sidewall friction, makes and shakes pawl and the first side wall (or ledge 24) out-of-gear plane (34).

3, self-regulated adjusting utility pliers as claimed in claim 2 is characterized in that: this shake pawl (26) have one roughly with described plane (34) facing surfaces (36), this surface contacts with the first side wall (or ledge 24), makes to shake pawl and rotate.