CN100513086C

CN100513086C - Pressing tongs

Info

Publication number: CN100513086C
Application number: CNB2008100274468A
Authority: CN
Inventors: 余炳顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-10
Filing date: 2008-04-10
Publication date: 2009-07-15
Anticipated expiration: 2028-04-10
Also published as: CN101254591A

Abstract

The invention discloses a hand tool of press pliers, which is used for pressing a lead block or pressing a lead block into a protection housing. The hand tool comprises a first and a second rotary movable arms arranged in a through-slot of a base, wherein a lower mold head of a press trough or a lower press head or a notch for loading a lead block into the protection housing is arranged on the lower section of the base; an upper mold head of the press trough or an upper press head is arranged on the end section of the first movable arm corresponding to the position; the second movable arm has a bump extending downwards from the second movable arm; a movable wheel is arranged on the lower section of the bump; and the first movable arm may move close to an upper portion of one end of the upper mold head of the press trough or the upper press head under the action of the wheel. The press pliers are power-saving and convenient in use, and has the advantages of reduced damage, improved service life, high accuracy for each pressing position and the production of marks, etc.

Description

A kind of pressing tongs

Technical field

The invention belongs to a kind of hand-held tool, relate to and have the rotating underarm of going up, so that people adopt the mode of holding, by the moving underarm of going up of plate, the parts that drive its place, end can be clamped operand, and the pliers of the operation of extruding.Be applied to the pliers of extruding, can utilize the head of suppressing on this hand-held tool lever arm to extrude and plumbous only or with lead only be pressed in the protection housing, perhaps be applied to the line ball pliers, can utilize die head on this hand-held tool lever arm tubular connection of extruding.

Background technology

Pressing tongs of the prior art; only enter the instrument of protection housing as traditional extrusion lead; with reference to Fig. 1; comprise and being installed on the pedestal 3; rotating first lever arm 1 and second lever arm 2; second lever arm 2 is above first lever arm 1; two lever arms use to hold mode for the user; can push second lever arm 2 by pronation; making progress simultaneously by all the other four except that thumb fingers, plate plays first lever arm 1; when second lever arm 2 rotates; can act on first lever arm 1 by the projection on it 21; and make first lever arm, 1 end place jointly suppress 11; extruding downwards is arranged in the lead only 5 of the housing 4 at pedestal 3 places, and plumbous only 5 distortion are squeezed in the housing 4.The extrusion of this instrument operation has the advantages that to be finished by a hand.But, by projection 21 effects first lever arm 1, not only need first lever arm 1 is produced a downward normal pressure, increase the rotation arm of force but also need move forward as far as possible by projection, in the hope of obtaining bigger moment, could guarantee to suppress an enough power of suppressing of 11 acquisitions, existing problem is: in the extrusion operating process, along with moving forward of the projection 21 of second lever arm 2, it is also increasing that 1 pair of projection of first lever arm 21 produces reaction force upwards, it is more and more big that the projection 21 of second lever arm 2 continues to move forward suffered frictional force, need the user to use bigger strength, projection 21 is moved forward, suppress 11 could with lead only 5 extrusions enter in the housing 4, thereby resemble this traditional instrument and have the relatively problem of effort of using, and repeatedly using the back on the surface of first lever arm 1, to produce concavo-convex vestige easily, not only make it impaired, and the accuracy of follow-up use location is exerted an influence.

Summary of the invention

The objective of the invention is to overcome above deficiency and a kind of pressing tongs through improvement is provided, this pressing tongs can satisfy the requirement of operand to compressive force, and can reduce the power of holding of user's hand effectively, thereby proposes in a kind of use more labour-saving pressing tongs.

Its purpose is realized by following scheme:

A kind of pressing tongs; comprise that being installed in pedestal wears in the groove; rotating first lever arm and second lever arm; wherein; the bottom of pedestal is equipped with and is suppressed head under a pressuring line groove lower die head or one or have the plumbous breach of only protecting housing that can be used for packing into; locate corresponding being equipped with on the pressuring line groove on die head or one in the corresponding first lever arm end with this and suppress head; second lever arm has the projection that extends by on it downwards; and second lever arm is positioned at the top of first lever arm; second lever arm rotate can by its projection act on die head on the nearly pressuring line groove of first lever arm or on suppress the place, top of first end; be characterized in; mobilizable wheel is equipped with in the bottom of projection, can by this wheel effect die head on the nearly pressuring line groove of first lever arm or on suppress the place, top of first end.

In the such scheme, elected using suppressed head and when suppressing down, this pressing tongs can be used as the tool using of plumbous of special extrusion tradition; Elected using when suppressing head and breach, this pressing tongs is suitable for lead only is pressed in the protection housing, and the lead instrument only of wearing the thief-proof sealing device of formula as the identification locking device and the line of special extrusion such as Chinese invention patent application 200710027143.1 disclosed sealing devices, Chinese utility model patent 03267763.4 and 200720048843.4 disclosed lead-sealable actuations uses; When die head and pressuring line groove lower die head, this pressing tongs can be used as Crimping Pliers and uses on selecting pressuring line groove for use.

When this pressing tongs uses, the available handgrip of holding first lever arm and second lever arm, can making progress simultaneously by all the other four except that thumb fingers, plate plays first lever arm, can make on the pressuring line groove of first lever arm die head or on suppress head downwards near a tubular connection to be pressed or only plumbous, push simultaneously second lever arm downwards by palm, when the handgrip of second lever arm rotates, will by projection drive wheel further push die head on the nearly pressuring line groove of first lever arm or on suppress an end of head, increasing along with pressing force, wheel can turn over an angle, at this moment, the operator of first lever arm and second lever arm is each other can be close to a greater degree, and make wheel act on die head on the nearly pressuring line groove of first lever arm or on suppress first end end application point further move forward.

In the such scheme, in order to make the pressuring line groove die head at the extrusion tubular connection or suppress the convenience that head breaks away from the plumbous only back of extrusion, at nearly pressuring line groove lower die head place, the bottom of pedestal or nearly indentation, there or the nearly head of suppressing down locate, and a spring is housed between the corresponding section of first lever arm.When the operator of first lever arm when upwards rotating, on the nearly pressuring line groove of first lever arm die head or near on suppress head an end will rotate, spring is compressed, be on the nearly pressuring line groove of first lever arm die head or near on suppress an end of head counter-rotating prepared an auxiliary torque, the deposit of this moment helps playing making things convenient for the pressuring line groove die head to break away from tubular connection or suppressing head and breaks away from a plumbous effect only.

In the such scheme; can form two outward extending extensions on the pedestal; present the breach that is similar to √ font shape; pressuring line groove lower die head or suppress down head or the plumbous breach of only protecting housing that is used to pack into can be provided with or be formed at the extension of below, second lever arm is movable to be installed in the extension of top.This scheme can play the effect that reduces pedestal materials and overall weight, especially, the extension of top is fully extended, make the wheel of the second lever arm projection bottom can be further near die head on the nearly pressuring line groove of first lever arm or on suppress the end of first end.

In the such scheme, the top of first lever arm extends upward and is formed with the flange that stops second lever arm to continue to rotate, the height of this flange is with die head on the pressuring line groove of first lever arm or suppress head and just operand extrusion is put in place, and flange is just contacting the bottom of second lever arm.Like this, further push and be restricted, can play preventing the pressuring line groove die head or suppress head and unrestrictedly move and damage tubular connector or plumbous only work by pressure first lever arm is rotated

With.

Pressing tongs of the present invention has following characteristics:

This pressing tongs is owing to load onto wheel in the projection bottom of second lever arm, utilize the operator handle of first lever arm and second lever arm, when under being subjected to pressing force effect in one's hands, rotating mutually, wheel contacts with the first lever arm end face, be subjected to the effect of the first lever arm end face frictional force, the direction of this frictional force is tangential along wheel and end face contact point, thereby, make wheel turns easily, make the contact point of the wheel and the first lever arm end face can be constantly, reach as much as possible, and make that projection is more approaching to be in and the vertical position of the first lever arm end face.

Therefore, pressing tongs of the present invention, can letter add with economizing larger wheels to die head on the nearly pressuring line groove of first lever arm or on suppress the positive acting power of first end, can increase the arm of force of this active force again around the first lever arm run-on point, obtained bigger moment, and then can improve the pressuring line groove die head largely or suppress the pressure of head, and need not require to increase the power of holding of hand.

In addition, this pressing tongs compared with prior art can also overcome conventional tool effectively owing to the increase along with pressing force causes the increase of frictional force, and the obstacle that adds the big protruding block reach thus constantly causes the problem that needs increasing palm is held power again.

Moreover, this pressing tongs is finished the extrusion operation, the pressuring line groove die head need be broken away from tubular connector or suppress head when breaking away from plumbous, can be by moving the second lever arm handgrip to upper plate, at this moment, the mode that wheel also can lift with rotation on first lever arm is left first lever arm, make wheel die head on the nearly pressuring line groove of first lever arm or on suppress the moment that first end produces and rapidly disappear, compared with prior art, can avoid the direct contact need of projection to overcome the resistance that moves friction effectively, play the labour-saving effect again.

Also have, pressing tongs since on the nearly pressuring line groove of first lever arm die head or on suppress first end moment generation be that application point and active force according to wheel produces, and the conversion of application point is to be realized by the rotation of wheel, thereby can farthest alleviate scuffing between the wheel and the first lever arm upper surface, compared with prior art, help improving service life, and guarantee putting in place and accuracy that the marking produces of each extrusion.

Description of drawings

Fig. 1 is the structural representation of existing extrusion pliers;

Fig. 2 is the structural representation of a kind of specific embodiment of pressing tongs of the present invention;

Fig. 3 is the broken section structural representation of Fig. 2 pressing tongs;

Fig. 4 is the structural representation of the another kind of specific embodiment of pressing tongs of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is made concrete detailed description:

Embodiment one: with reference to Fig. 2 and Fig. 3, this pressing tongs comprise one present be similar to √ font shape breach, have a pedestal 3 of wearing the groove structure, be that pedestal 3 has two outward extending extension 31 and following extensions 32 gone up, pedestal 3 is inner for having the conduit 33 that penetrates; And be movably arranged on first lever arm 1 in the conduit 33 of the nearly bottom of pedestal 3; With second lever arm 2 in the conduit 33 that is movably arranged on extension 31 on the pedestal 3.Wherein, the following extension 32 of pedestal 3 has can be used for packing into plumbous breach 34, the first lever arms 1 of only protecting housing and the corresponding end of this breach and is equipped with and suppresses 4; Second lever arm 2 has the projection 21 that is extended by its lower surface downwards, and mobilizable wheel 5 is equipped with in the bottom of projection 21; There is projection 11 corresponding section that the nearly indentation, there in the bottom of pedestal 3 forms recess 35, the first lever arms 1, shock mount 8 in recess 35 and projection 11; The upper surface of first lever arm 1 extends upward and is formed with flange 12.

During use; second lever arm 2 is upwards rotated and lifts; wheel 5 will leave first lever arm 1 and suppress a upper surface of 4 one ends near; under the upwards effect of spring 8; suppressing an end of 4 on first lever arm 1 is near upwards lifts; at this moment; plumbous only 6 and protection housing 7 can be placed in the breach 34; then; by holding first lever arm 1 and first lever arm, 2 open handgrips; under the effect of pressing force; the handgrip of first lever arm 1 upwards rotates; make first lever arm 1 on suppress 4 downwards near plumbous only 6; simultaneously; the handgrip of second lever arm 2 rotates; drive wheel 5 near and act on first lever arm 1 and suppress a upper surface of 4 one ends near; make first lever arm 1 on suppress 4 and only 6 fit with plumbous; subsequently; under the continuation effect of pressing force; wheel 5 can rotate an angle again; make the handgrip of first lever arm 1 and first lever arm 2 further close; and make wheel 5 and first lever arm 1 suppress a contact point of 4 one end upper surfaces near to be moved further forward; at this moment; on suppress 4 and obtained the enough power of suppressing lead only 6 is pressed in the protection housing 7; in addition; when lead only 6 enter in the protection housing 7 should the position be arranged the time, flange 12 just is supported on the lower surface of second lever arm, 2 handgrips, making further exerts pressure is restricted; make and suppress 4 and can not continue lead only 6 is produced the power of further suppressing, protection plumbous only 6 and housing 7 be not damaged.

Pressing tongs in this example is suitable for lead only is pressed in the protection housing.

Embodiment two: with reference to Fig. 4, be with the difference of embodiment one, on suppress head and change die head on the pressuring line groove (9) into, pressuring line groove lower die head (10) is loaded onto in the place that forms breach instead, make pressing tongs become the Crimping Pliers of the tubular connector of extrusion, this instrument has the advantage that the present invention mentions equally.

In addition, can imagine, with reference to embodiment one, suppress head if the breach transformation dressed up down, then pressing tongs can be used as and adapts to the plumbous only instrument of extrusion of tradition, and this instrument equally also has the advantage that the present invention mentions.

Claims

1; a kind of pressing tongs; comprise that being installed in pedestal wears in the groove; rotating first lever arm and second lever arm; wherein; the bottom of pedestal is equipped with and is suppressed head under a pressuring line groove lower die head or one or have the plumbous breach of only protecting housing that can be used for packing into; locate corresponding being equipped with on the pressuring line groove on die head or one in the corresponding first lever arm end with this and suppress head; second lever arm has the projection that extends by on it downwards; and second lever arm is positioned at the top of first lever arm; second lever arm rotate can by its projection act on die head on the nearly pressuring line groove of first lever arm or on suppress the place, top of first end; it is characterized in that; mobilizable wheel is equipped with in the bottom of projection, can by this wheel effect die head on the nearly pressuring line groove of first lever arm or on suppress the place, top of first end.

2, according to the pressing tongs of claim 1; can form two outward extending extensions on the pedestal; present the shape breach that is similar to the √ font, and the plumbous breach of only protecting housing that is used to pack into is formed at the extension of below, second lever arm is movable to be installed in the extension of top.