CN114888730B

CN114888730B - Combined multifunctional locking pliers

Info

Publication number: CN114888730B
Application number: CN202210824351.9A
Authority: CN
Inventors: 陈春耕; 陈国斌; 孙琪
Original assignee: Zhangjiagang Steelman Hardware Product Co ltd
Current assignee: Zhangjiagang Steelman Hardware Product Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-10-18
Anticipated expiration: 2042-07-14
Also published as: CN114888730A

Abstract

The invention relates to the field of pliers, in particular to a combined multifunctional locking pliers. The clamping device aims to solve the technical problems that the locking pliers cannot clamp parts with large thickness and need to be matched with an additionally customized clamp to clamp the parts with large thickness. The invention provides a combined multifunctional locking pliers, which comprises a limiting rod, a stretching assembly and the like; the limiting rod is connected with a stretching assembly. The invention has the conventional clamping function and the function of opening widening, when the width of the opening is adjusted, the limiting rod inserted on the upper surface of the clamp arm is pulled out, the limiting rod is rotated ninety degrees in the horizontal direction, the limiting rod is locked on the clamp arm through the locking component, the advancing and retreating adjusting component on the inner side of the clamp arm is adjusted to drive the main clamp block to move in the direction far away from the auxiliary clamp block, the width of the opening is only related to the moving length of the advancing and retreating adjusting component, and the opening is not influenced by the moving range of the clamp arm and the crank of the locking pliers.

Description

Combined multifunctional locking pliers

Technical Field

The invention relates to the field of pliers, in particular to a combined multifunctional locking pliers.

Background

The locking pliers are mainly used for clamping parts to perform various processing, the common locking pliers control the locking and unlocking of the locking pliers through a toggle rod clamping mechanism, and a tension spring generates a large clamping force after locking, so that the clamped parts cannot be loosened, and the jaws have a multi-gear adjusting function and are used for clamping parts with different thicknesses.

The locking pliers described in patent CN105328596B has a multi-gear adjusting function, on the basis of ensuring the high-strength tightening force, the locking pliers can clamp parts with different thicknesses, and is suitable for various complex machining conditions, however, the opening and closing degree of the locking pliers is limited, the opening and closing degree of the locking pliers is influenced by the movable range of a pliers arm and a crank, the clamping work cannot be performed on parts with the thickness far larger than the width between two pliers handles of the locking pliers, so that great limitation still exists in the application process, and before the parts with the clamping thickness far larger than the width between the two pliers handles of the locking pliers, an additionally customized clamp needs to be matched to perform the clamping work, and the convenience and the flexibility of the operation of the whole locking pliers are influenced.

Disclosure of Invention

The invention provides a combined multifunctional locking pliers, aiming at overcoming the defects that the locking pliers cannot clamp parts with larger thickness, and clamping work needs to be carried out by matching with an additionally customized clamp when the locking pliers clamp the parts with larger thickness, so that the convenience and flexibility of the operation of the whole locking pliers are influenced.

The technical scheme is as follows: a combined multifunctional locking pliers comprises an advancing and retreating adjusting assembly, a stretching assembly, a locking assembly, a pliers arm, an auxiliary clamping block, a crank, a connecting rod, a tension spring, a main clamping block, a U-shaped mounting piece and a limiting rod; the left part of the clamp arm is rotatably connected with an auxiliary clamping block through a first rivet; the front side of the auxiliary clamping block is fixedly connected with an auxiliary clamp sheet; the right side of the auxiliary clamping block is rotatably connected with a crank through a second rivet; the middle part of the crank is rotationally connected with a connecting rod through a third rivet; the front end of the connecting rod is rotatably connected with the clamp arm through a fourth rivet; a tension spring is fixedly connected between the crank and the clamp arm and is positioned between the connecting rod and the auxiliary clamping block; the inner side of the forceps arm is connected with an advancing and retreating adjusting component; the left side of the advance and retreat adjusting component is connected with two fifth rivets; the two fifth rivets are connected with two gaskets together; a main clamping block is fixedly connected between the left ends of the two gaskets; the rear side of the main clamping block is fixedly connected with a main clamp sheet; after the limiting rod inserted on the upper surface of the clamp arm is pulled out, the limiting rod is rotated ninety degrees in the horizontal direction, the limiting rod is locked on the clamp arm through a locking component on the clamp arm, a forward and backward adjusting component on the inner side of the clamp arm is adjusted to drive the main clamping block to move in the direction far away from the auxiliary clamping block, meanwhile, the limiting rod controls the main clamping block to move in the direction vertical to the moving direction of the forward and backward adjusting component through a U-shaped mounting piece sleeved on the outer surfaces of the two gaskets, and the distance between the main clamping piece on the main clamping block and the auxiliary clamping piece on the auxiliary clamping block is increased;

the stretching assembly comprises a fixed block, a second sliding block and a spring piece; a fixed block is fixedly connected to the left part of the lower side of the limiting rod; the lower side of the limiting rod is connected with a second sliding block in a sliding manner; a spring part is fixedly connected between the fixed block and the second sliding block; and two second clamping block structures are arranged on the lower side of the fixing block.

As the improvement of the scheme, the upper side of the U-shaped mounting piece is provided with a first clamping block structure which drives the limiting rod to move.

As an improvement of the scheme, the left end of the limiting rod is provided with a second clamping groove structure which is clamped with the first clamping block structure.

As the improvement of the proposal, the advance and retreat adjusting component comprises a guide rail, a screw rod, a first slide block and a push rod; the inner side of the forceps arm is fixedly connected with a guide rail through a sixth rivet; a screw rod is rotatably connected inside the guide rail; two first sliding blocks are connected to the right side of the guide rail in a sliding manner; the two first sliding blocks are connected with the screw rod in a rotating mode; the front sides of the two first sliding blocks are respectively and rotatably connected with a push rod through rotating shafts; the two push rods are respectively connected with a fifth rivet in a rotating way.

As the improvement of the scheme, the right end of the screw rod is provided with an anti-skid knob structure.

As an improvement of the scheme, a positioning block is fixedly connected to the rear part of the upper side of the clamp arm, and the positioning block is parallel to the first rivet in the front-back direction; the upper side of the positioning block is provided with two first clamping groove structures which are inserted with the second clamping blocks.

As the improvement of the proposal, the locking component comprises a rotating shaft, a clamping piece and a torsion spring; the left part of the upper surface of the clamp arm is rotationally connected with a rotating shaft; the outer surface of the rotating shaft is fixedly connected with a clamping piece; two torsion springs are fixedly connected between the clamping piece and the clamp arm, and the torsion springs are sleeved on the outer surface of the rotating shaft.

As an improvement of the scheme, the lower surface of the card is provided with a third card block structure of two locking limiting rods.

As an improvement of the scheme, the outer surface of the limiting rod is provided with a plurality of third clamping groove structures for clamping the third clamping block structures.

Has the beneficial effects that: the combined multifunctional locking pliers have the conventional clamping function and the function of widening a clamping opening, when the width of the clamping opening of the combined multifunctional locking pliers is adjusted, after a limiting rod inserted on the upper surface of a pliers arm is pulled out, the limiting rod rotates ninety degrees in the horizontal direction, the limiting rod is locked on the pliers arm through a locking assembly, an advancing and retreating adjusting assembly on the inner side of the pliers arm is adjusted, a main clamping block is driven to move in the direction away from an auxiliary clamping block, meanwhile, the limiting rod is sleeved on U-shaped mounting pieces on the outer surfaces of two gaskets, the main clamping block is controlled to move in the direction perpendicular to the advancing and retreating adjusting assembly, the distance between the main clamping piece on the main clamping block and the auxiliary clamping piece on the auxiliary clamping block is increased, the work of freely adjusting the width of the clamping opening is completed, in the process of adjusting the width of the clamping opening of the combined multifunctional locking pliers, the width of the clamping opening is only related to the moving length of the advancing and retreating adjusting assembly, the clamping opening is not influenced by the movable range of the pliers and the crank of the pliers, in conclusion, whether the combined multifunctional locking pliers can be adjusted by using the limiting rod in the clamping opening of the combined locking pliers, the clamping pliers, the parts can be additionally convenient and the clamping pliers, and the parts can be conveniently used for clamping parts, and the parts without additionally.

Drawings

FIG. 1 is a perspective view of the multi-functional combination pliers of the present application;

FIG. 2 is a cross-sectional view of a jawarm according to the present application;

FIG. 3 is a perspective view of the forward and backward adjustment assembly of the present application;

FIG. 4 is a schematic view of a partial perspective view of the forward/reverse adjustment assembly of the present application;

FIG. 5 is an exploded view of the main clamp block, main clamp tab, spacer and fifth rivet of the present application;

FIG. 6 is a perspective view of a U-shaped mounting plate of the present application;

FIG. 7 is a perspective view of the stop of the present application;

FIG. 8 is an enlarged view of area C of the multi-functional combination pliers of the present application;

FIG. 9 is a perspective view of a stretching assembly of the present application;

FIG. 10 is a perspective view of the locking assembly of the present application;

FIG. 11 is a partial perspective view of the closure assembly of the present application;

FIG. 12 is a first operational view of the multi-functional combination pliers of the present application;

fig. 13 is a schematic view of a second working state of the combined multifunctional locking pliers of the application.

Number designation in the figure: 1-tong arm, 11-first rivet, 12-positioning block, 121-first clamping groove, 2-auxiliary clamping block, 21-auxiliary tong piece, 22-second rivet, 3-crank, 4-connecting rod, 41-third rivet, 42-fourth rivet, 5-tension spring, 6-main clamping block, 61-main tong piece, 62-gasket, 63-fifth rivet, 7-U-shaped mounting piece, 71-first clamping block, 8-limiting rod, 81-second clamping groove, 82-third clamping groove, 101-guide rail, 1011-sixth rivet, 102-screw rod, 1021-knob, 103-first sliding block, 104-push rod, 201-fixing block, 202-second sliding block, 2021-second clamping block, 203-spring part, 301-rotating shaft, 302-clamping block, 3021-third clamping block, 303-torsion spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Examples

A combined multifunctional locking pliers is shown in figures 1-11 and comprises a forward and backward adjusting component, a stretching component, a locking component, a plier arm 1, an auxiliary clamping block 2, a crank 3, a connecting rod 4, a tension spring 5, a main clamping block 6, a U-shaped mounting plate 7 and a limiting rod 8; the left part of the clamp arm 1 is rotatably connected with an auxiliary clamping block 2 through a first rivet 11; the upper end of the first rivet 11 is provided with a convex block structure of which the left side and the right side are parallel surfaces; the front side of the auxiliary clamping block 2 is fixedly connected with an auxiliary clamp piece 21; the right side of the auxiliary clamping block 2 is rotatably connected with a crank 3 through a second rivet 22; the middle part of the crank 3 is rotationally connected with a connecting rod 4 through a third rivet 41; the front end of the connecting rod 4 is rotatably connected with the clamp arm 1 through a fourth rivet 42; a tension spring 5 is fixedly connected between the crank 3 and the clamp arm 1, and the tension spring 5 is positioned between the connecting rod 4 and the auxiliary clamping block 2; the inner side of the forceps arm 1 is connected with an advancing and retreating adjusting component; two fifth rivets 63 are connected to the left side of the forward and backward adjusting assembly; the two fifth rivets 63 are connected with the two gaskets 62; a main clamping block 6 is welded between the left ends of the two gaskets 62; the rear side of the main clamping block 6 is fixedly connected with a main clamp sheet 61; the two fifth rivets 63 are connected with the U-shaped mounting pieces 7 together; two spacers 62 are located in the U-shaped mounting plate 7; the main clamping block 6 is tightly attached to the U-shaped mounting piece 7; the upper surface of the clamp arm 1 is inserted with a limiting rod 8; a first clamping block 71 structure is arranged on the upper side of the U-shaped mounting piece 7; the left end of the limiting rod 8 is provided with a second clamping groove 81 structure; the lower side of the limiting rod 8 is connected with a stretching assembly; the left side of the clamp arm 1 is connected with a locking component.

As shown in fig. 2-4, the advancing and retreating adjusting assembly includes a guide rail 101, a screw 102, a first slider 103 and a push rod 104; the inner side of the clamp arm 1 is fixedly connected with a guide rail 101 through a sixth rivet 1011; a screw rod 102 is rotatably connected inside the guide rail 101; a knob 1021 structure is arranged at the right end of the screw rod 102; two first sliding blocks 103 are connected to the right side of the guide rail 101 in a sliding manner; the two first sliding blocks 103 are both screwed with the screw rod 102; the front sides of the two first sliding blocks 103 are respectively connected with a push rod 104 through rotating shafts in a rotating way; the two push rods 104 are each pivotally connected to a fifth rivet 63.

As shown in fig. 9, the stretching assembly comprises a fixed block 201, a second sliding block 202 and a spring member 203; a fixed block 201 is fixedly connected to the left part of the lower side of the limiting rod 8; the lower side of the limiting rod 8 is connected with a second sliding block 202 in a sliding manner; a spring part 203 is fixedly connected between the fixed block 201 and the second sliding block 202; two second fixture block 2021 structures are arranged on the lower side of the fixed block 201; a positioning block 12 is welded at the rear part of the upper side of the clamp arm 1, and the positioning block 12 is parallel to the first rivet 11 in the front and back directions; two first clamping groove 121 structures are formed on the upper side of the positioning block 12.

As shown in fig. 10 and 11, the locking assembly includes a rotating shaft 301, a locking piece 302 and a torsion spring 303; the left part of the upper surface of the clamp arm 1 is rotatably connected with a rotating shaft 301; a clamping piece 302 is fixedly connected to the outer surface of the rotating shaft 301; two torsion springs 303 are fixedly connected between the clamping piece 302 and the clamp arm 1, and the torsion springs 303 are sleeved on the outer surface of the rotating shaft 301; the lower surface of the card 302 is provided with two third block 3021 structures; a plurality of third clamping grooves 82 are formed in the outer surface of the limiting rod 8.

The combined multifunctional locking pliers have a conventional clamping function and a jaw widening function, and the conventional clamping function or the jaw widening function is selected to be used by determining whether the limiting rod 8 is used for adjustment in the work using the combined multifunctional locking pliers.

When the conventional clamping function of the combined multifunctional locking pliers is used, the pliers arms 1 and the crank 3 are only needed to be held, the crank 3 is pulled outwards, the crank 3 pushes the connecting rod 4 to rotate around the axis of the fourth rivet 42 in the clockwise direction of the overlooking angle, meanwhile, the crank 3 rotates around the axis of the third rivet 41 in the anticlockwise direction of the overlooking angle, the left end of the crank 3 drives the auxiliary clamping block 2 through the second rivet 22 and rotates around the axis of the first rivet 11 in the clockwise direction of the overlooking angle, the auxiliary clamping piece 21 on the auxiliary clamping block 2 and the main clamping piece 61 on the main clamping block 6 are far away from each other, a clamping opening between the auxiliary clamping piece 21 and the main clamping piece 61 of the combined multifunctional locking pliers is opened, meanwhile, the crank 3 drives the tension spring 5 to stretch outwards and generate elastic force, after the clamping opening is aligned with a part to be clamped, the crank 3 is loosened, the crank 3 drives the tension spring 5 to reset, and simultaneously, the crank 3 drives the auxiliary clamping piece 21 on the auxiliary clamping block 2 to move towards the main clamping piece 61 on the main clamping block 6, so that the auxiliary clamping piece 21 and the main clamping piece 61 are close to clamp a part to clamp zero.

When the combined multifunctional locking pliers is used for widening the clamping opening, the combined multifunctional locking pliers needs to be subjected to clamping opening width adjustment work, the limiting rod 8 and the connected stretching assembly are pulled out of the pliers arm 1, the clamping piece 302 is pulled out to be upwards turned around the axis of the rotating shaft 301 and drive the torsion spring 303 to upwards twist, then the limiting rod 8 rotates ninety degrees on the horizontal plane, the second clamping groove 81 of the limiting rod 8 is clamped on the first clamping block 71 of the U-shaped mounting piece 7, the two second clamping blocks 2021 on the lower side of the second sliding block 202 are clamped in the two first clamping grooves 121 of the positioning block 12, as shown in fig. 12, the limiting rod 8 is connected to the pliers arm 1 and the U-shaped mounting piece 7, the U-shaped mounting piece 7 and the main clamping block 6 are prevented from shaking in the clamping work, and the assembling work of the limiting rod 8 is completed.

Then, the width of the clamping opening between the auxiliary clamping piece 21 and the main clamping piece 61 of the combined multifunctional locking pliers is adjusted, only the knob 1021 needs to be rotated to drive the lead screw 102 to rotate, the lead screw 102 drives the two first sliding blocks 103 to move towards the main clamping block 6 along the guide rail 101, the first sliding blocks 103 push the U-shaped mounting pieces 7 through the push rods 104, the U-shaped mounting pieces 7 drive the main clamping block 6 to move away from the auxiliary clamping piece 21, at the moment, the main clamping block 6 pulls the limiting rod 8 to move through the U-shaped mounting pieces 7, the limiting rod 8 is limited by the second sliding blocks 202, the limiting rod 8 can only move along the length direction of the limiting rod, and the second sliding blocks 202 and the limiting rod 8 slide relatively, the second slider 202 stretches the spring member 203, so that the main clamping block 6 is limited by the limiting rod 8 and can only move along the direction perpendicular to the guide rail 101, the knob 1021 is continuously rotated to drive the screw rod 102 to rotate, the push rod 104 pushes the U-shaped mounting piece 7 to drive the main clamping block 6 to move towards the direction away from the auxiliary clamping block 2, and therefore the distance between the auxiliary clamping block 2 and the main clamping block 6 is adjusted, as shown in fig. 13, the adjustment work of the width of the clamping opening between the auxiliary clamping piece 21 and the main clamping piece 61 is realized until the width of the clamping opening between the auxiliary clamping piece 21 and the main clamping piece 61 is parallel to the thickness of a part to be clamped, and the adjustment work of the width of the clamping opening is completed.

And finally, the clamping piece 302 is pressed downwards, so that the two third clamping blocks 3021 on the lower side of the clamping piece 302 are respectively clamped in the two third clamping grooves 82 of the limiting rod 8, the locking work of the limiting rod 8 is completed, the phenomenon that the limiting rod 8 is loosened can not occur during the subsequent use of the combined multifunctional locking pliers for clamping parts, and therefore the width of a clamping opening between the auxiliary clamp piece 21 and the main clamp piece 61 is kept unchanged, and the stable and smooth clamping work of the parts is guaranteed.

The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.

Claims

1. A combined multifunctional locking pliers comprises a pliers arm (1), an auxiliary clamping block (2), a crank (3), a connecting rod (4) and a tension spring (5); the left part of the clamp arm (1) is rotatably connected with an auxiliary clamping block (2) through a first rivet (11); the front side of the auxiliary clamping block (2) is fixedly connected with an auxiliary clamp sheet (21); the right side of the auxiliary clamping block (2) is rotationally connected with a crank (3) through a second rivet (22); the middle part of the crank (3) is rotationally connected with a connecting rod (4) through a third rivet (41); the front end of the connecting rod (4) is rotatably connected with the clamp arm (1) through a fourth rivet (42); a tension spring (5) is fixedly connected between the crank (3) and the clamp arm (1), and the tension spring (5) is positioned between the connecting rod (4) and the auxiliary clamping block (2); is characterized by also comprising a forward and backward adjusting component, a stretching component, a locking component, a main clamping block (6), a U-shaped mounting piece (7) and a limiting rod (8); the inner side of the forceps arm (1) is connected with a forward and backward adjusting component; two fifth rivets (63) are connected to the left side of the forward and backward adjusting component; the two fifth rivets (63) are connected with two gaskets (62) together; a main clamping block (6) is fixedly connected between the left ends of the two gaskets (62); the rear side of the main clamping block (6) is fixedly connected with a main clamp sheet (61); after a limiting rod (8) inserted on the upper surface of a clamp arm (1) is pulled out, the limiting rod (8) is rotated ninety degrees in the horizontal direction, the limiting rod (8) is locked on the clamp arm (1) through a locking component on the clamp arm (1), a forward and backward adjusting component on the inner side of the clamp arm (1) is adjusted to drive a main clamping block (6) to move towards the direction far away from an auxiliary clamping block (2), meanwhile, the limiting rod (8) is sleeved on U-shaped mounting pieces (7) on the outer surfaces of two gaskets (62), the main clamping block (6) is controlled to move along the direction vertical to the forward and backward adjusting component, and the distance between a main clamping piece (61) on the main clamping block (6) and an auxiliary clamping piece (21) on the auxiliary clamping block (2) is increased;

the stretching assembly comprises a fixed block (201), a second sliding block (202) and a spring piece (203); a fixed block (201) is fixedly connected to the left part of the lower side of the limiting rod (8); the lower side of the limiting rod (8) is connected with a second sliding block (202) in a sliding manner; a spring piece (203) is fixedly connected between the fixed block (201) and the second sliding block (202); two second fixture block (2021) structures are arranged on the lower side of the fixed block (201);

a first clamping block (71) structure which drives the limiting rod (8) to move is arranged on the upper side of the U-shaped mounting piece (7);

the left end of the limiting rod (8) is provided with a second clamping groove (81) structure which is clamped with the first clamping block (71) structure;

the forward and backward adjusting component comprises a guide rail (101), a screw rod (102), a first sliding block (103) and a push rod (104); the inner side of the clamp arm (1) is fixedly connected with a guide rail (101) through a sixth rivet (1011); a screw rod (102) is rotatably connected inside the guide rail (101); two first sliding blocks (103) are connected to the right side of the guide rail (101) in a sliding manner; the two first sliding blocks (103) are connected with the screw rod (102) in a rotating mode; the front sides of the two first sliding blocks (103) are respectively connected with a push rod (104) through rotating shafts in a rotating mode; the two push rods (104) are respectively connected with a fifth rivet (63) in a rotating way;

the right end of the screw rod (102) is provided with an anti-skid knob (1021) structure;

a positioning block (12) is fixedly connected to the rear part of the upper side of the clamp arm (1), and the positioning block (12) is flush with the front and the back of the first rivet (11); the upper side of the positioning block (12) is provided with two first clamping groove (121) structures which are inserted with the second clamping block (2021);

the locking assembly comprises a rotating shaft (301), a clamping piece (302) and a torsion spring (303); the left part of the upper surface of the clamp arm (1) is rotatably connected with a rotating shaft (301); a clamping piece (302) is fixedly connected to the outer surface of the rotating shaft (301); two torsion springs (303) are fixedly connected between the clamping piece (302) and the clamp arm (1), and the torsion springs (303) are sleeved on the outer surface of the rotating shaft (301);

the lower surface of the card (302) is provided with a third fixture block (3021) structure of two locking limiting rods (8);

the outer surface of the limiting rod (8) is provided with a plurality of third clamping groove (82) structures which are clamped with the third clamping block (3021) structures.