CN219170623U

CN219170623U - Long-arm locking pliers

Info

Publication number: CN219170623U
Application number: CN202223103538.4U
Authority: CN
Inventors: 单隽哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-06-13
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a long-arm locking pliers, which relates to the technical field of locking pliers and comprises the following components: the clamp body and the left arm and the right arm which are symmetrically arranged on the clamp body by taking the central line of the locking pliers as a reference, wherein the left arm and the right arm respectively comprise an upper movable part and a lower movable part, the lower end of the upper movable part is movably connected with the upper end of the lower movable part, the upper movable parts of the left arm and the right arm take the movable connection points of the upper movable parts and the lower movable parts as rotation centers, so that the upper movable parts rotate in the direction close to the central line to adjust the included angle between the upper movable parts and the lower movable parts, the relative positions of the upper movable parts and the lower movable parts are adjusted to 90 degrees which are mutually perpendicular from 180 degrees on the same plane, and the included angle alpha can be 90 degrees, 135 degrees and 180 degrees. The utility model has reasonable design and compact structure, and can adjust the distance between the chucks according to the size of the clamped object, thereby meeting the clamping requirements of objects with different sizes. Meanwhile, the overlong large force arm is avoided, the cost is saved, and the portable electronic device is also convenient to carry.

Description

Long-arm locking pliers

Technical Field

The utility model relates to the technical field of locking pliers, in particular to a long-arm locking pliers.

Background

The locking pliers are a common clamping tool which is mainly used for clamping parts for riveting, welding, grinding and other processing, and are characterized in that the jaws can be locked and generate large clamping force so that the clamped parts cannot be loosened. The C-shaped locking pliers disclosed in the patent No. CN201120088821.7 and the long-head locking pliers disclosed in the patent No. CN201820517029.0 are both single-purpose pliers, and are inconvenient to adjust.

In practical use, in order to clamp a wider object, the length of the two arms of the locking pliers is set to be long enough, so that the pliers are heavy, are inconvenient to carry and use, and increase cost.

Disclosure of Invention

The present utility model addresses one or more of the above-mentioned prior art problems by providing a long-armed pliers.

According to a first aspect of the present utility model, 1. A long-armed locking pliers, comprising:

the clamp body and the left arm and the right arm which are symmetrically arranged on the clamp body by taking the central line of the locking pliers as a reference, the left arm and the right arm both comprise an upper movable part and a lower movable part, the lower end of the upper movable part is movably connected with the upper end of the lower movable part,

the upper movable parts of the left arm and the right arm take the movable connection points of the upper movable parts and the lower movable parts as rotation centers, and the upper movable parts are rotated towards the direction close to the central line to adjust the included angle between the upper movable parts and the lower movable parts, so that the relative positions of the upper movable parts and the lower movable parts are adjusted from 180 degrees of the same plane to 90 degrees which are mutually perpendicular, and the included angle is more than or equal to 90 degrees and less than or equal to 180 degrees.

In some realizable modes, the forceps body comprises a forceps handle and corresponding connecting arms arranged on the forceps handle, the connecting arms comprise a left connecting arm and a right connecting arm, the lower end of each lower movable part is respectively and movably connected with the corresponding connecting arm,

the lower movable part takes the movable connection point of the lower movable part and the connecting arm as a rotation center, and rotates the lower movable part far away from the central line to adjust the included angle between the lower movable part and the connecting arm, so that the relative positions of the lower movable part and the connecting arm are adjusted to 90 degrees which are perpendicular to each other from the same plane, and the included angle is more than or equal to 0 degree and less than or equal to 90 degrees.

In some implementations, the lower movable portion includes an upper waist hole and a lower waist hole disposed along a length direction thereof, and locking screws are disposed in the upper waist hole and the lower waist hole;

the lower end of the upper movable part is provided with a first limiting groove section steel piece, the first limiting groove section steel piece is provided with a plurality of first limiting grooves, the upper end of the connecting arm is provided with a second limiting groove section steel piece, and the second limiting groove section steel piece is provided with a plurality of second limiting grooves;

the locking screw moves up and down in the upper waist hole and limits and fixes the upper movable part after moving to the first limiting groove;

the locking screw moves up and down in the lower waist hole and limits and fixes the lower movable part after moving to the second limiting groove.

In some implementations, the first and second limiting grooves are open in opposite directions.

In some realizable modes, each locking screw is sleeved with a pressure spring, and each locking screw penetrates through the waist hole and is connected with a corresponding nut so as to adjust the pressure of the pressure spring through an adjusting nut.

In some realizable modes, the number of the first limit grooves of the first limit groove type steel piece and the number of the second limit grooves of the second limit groove type steel piece are 3, and the included angle between each first limit groove and each second groove and the corresponding rotation center is 45 degrees.

In some realizable modes, the front end of the upper movable part is riveted with a movable chuck, the movable chuck rotates up and down around the rivet, and the movable chucks of the left arm and the right arm form a butt joint clamping surface during clamping.

In some realizable modes, the clamp handle comprises a small clamp handle, a large clamp handle, an opening handle and a tension spring, wherein the large clamp handle is fixedly connected with the right connecting arm, the small clamp handle is movably connected with the left connecting arm, the opening handle is movably connected with the middle part of the small clamp handle through a rivet or a hinge, one end of the tension spring is buckled on the left connecting arm, and the other end of the tension spring is buckled on the middle part of the large clamp handle;

the inner side of the small forceps handle is also movably connected with a middle gear through a rivet or a hinge, and the other end of the middle gear extends into the large forceps handle.

In some realizable modes, an adjusting bolt is arranged at the tail part of the large clamp handle, the head part of the adjusting bolt tightly props against the other end of the middle gear, and the adjusting bolt is used for adjusting the opening and closing degree between the right connecting arm and the left connecting arm.

In some implementations, the lower movable portion includes an upper connection block and a lower connection block, the upper waist hole is located on the upper connection block, the lower waist hole is located on the lower connection block, and the upper connection block and the lower connection block form a whole through rivet connection or welding.

The beneficial effects of the utility model are as follows: the utility model has reasonable design and compact structure, and can adjust the distance between the chucks according to the size of the clamped object, thereby meeting the clamping requirements of objects with different sizes. Meanwhile, the long large force arm is avoided, the cost is saved, the portable and portable electronic device is convenient to carry and use, and the portable and portable electronic device has a good market application prospect and is worthy of popularization.

Drawings

FIG. 1 is a schematic view of a long arm pliers;

FIG. 2 is a schematic view of a portion of a long-armed locking pliers;

FIG. 3 is a schematic view of the upper movable part of the long arm power wrench;

FIG. 4 is a schematic view of the lower movable part of the long arm power wrench;

FIG. 5 is a side view of a mating connection of the lower movable portion of the long arm power wrench;

FIG. 6 is a schematic view of the structure of the connecting arm of the upper movable part of the long arm power wrench;

FIG. 7 is a schematic view of an embodiment of a body of a long-armed pliers;

FIG. 8 is a schematic view of an embodiment of a body of a long-armed pliers;

FIG. 9 is a schematic view of an embodiment of a body of a long-armed pliers;

FIG. 10 is a schematic view of an embodiment of a body of a long-armed pliers;

fig. 11 is a schematic view of an embodiment of a body of a long-armed locking pliers.

Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The application technical scheme is further described in detail below with reference to the accompanying drawings.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the case of non-conflict, the following embodiments and features of the embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

The following description of the embodiments is not intended to limit the preferred embodiments.

Fig. 1 is a block diagram of a long-arm power wrench according to an exemplary embodiment, the present utility model provides a long-arm power wrench, a wrench body, and left and right arms 1 'and 1 symmetrically disposed on the wrench body with respect to a center line of the power wrench, the left and right arms 1' and 1 each including an upper movable portion 1-2 and a lower movable portion 1-3, a lower end of the upper movable portion 1-2 being movably connected with an upper end of the lower movable portion 1-3,

the upper movable parts 1-2 of the left arm 1' and the right arm 1 take the movable connection points of the upper movable parts 1-2 and the lower movable parts 1-3 as rotation centers, and the upper movable parts 1-2 are rotated towards the direction close to the central line to adjust the included angle between the upper movable parts and the lower movable parts, so that the relative positions of the upper movable parts and the lower movable parts are adjusted from 180 degrees of the same plane to 90 degrees which are perpendicular to each other, and the included angle is 90 degrees more than or equal to 180 degrees.

As shown in fig. 2-3, the forceps body comprises a forceps handle and corresponding connecting arms arranged on the forceps handle, the connecting arms comprise left connecting arms 1-5 and right connecting arms 1-4, the lower end of each lower movable part is respectively and movably connected with the corresponding connecting arm,

specifically, the lower movable part 1-3 takes the movable connection point of the lower movable part 1-3 and the connecting arm as a rotation center, and the lower movable part 1-3 is rotated in a direction far away from the central line to adjust the included angle between the lower movable part 1-3 and the connecting arm, so that the relative positions of the lower movable part 1-3 and the connecting arm are adjusted to 90 degrees which are perpendicular to each other from the same plane, and the included angle is more than or equal to 0 degree and less than or equal to 90 degrees.

As shown in fig. 4, the lower movable part 1-3 includes an upper waist hole 1-3-5 and a lower waist hole 1-3-6 provided along a length direction thereof, and locking screws 1-3-2 are provided in the upper waist hole 1-3-5 and the lower waist hole 1-3-6;

the lower end of the upper movable part 1-2 is provided with a first limiting groove section steel piece, the first limiting groove section steel piece is provided with a plurality of first limiting grooves 1-2-2, the upper end of the connecting arm is provided with a second limiting groove section steel piece, and the second limiting groove section steel piece is provided with a plurality of second limiting grooves 1-4-2;

the locking screw 1-3-2 moves up and down in the upper waist hole 1-3-5 and limits and fixes the upper movable part 1-2 after moving to the first limiting groove 1-2-2;

the locking screw 1-3-2 moves up and down in the lower waist hole 1-3-6 and limits and fixes the lower movable part 1-3 after moving to the second limiting groove 1-4-2.

The opening directions of the first limit groove 1-2-2 and the second limit groove 1-4-2 are opposite.

Each locking screw 1-3-2 is sleeved with a pressure spring 1-3-2', each locking screw 1-3-2 penetrates through the upper waist hole or the lower waist hole, and the locking screw is connected with a corresponding nut 1-3-2 "so as to adjust the pressure of the pressure spring 1-3-2' through an adjusting nut.

The number of the first limit grooves 1-2-2 of the first limit groove type steel piece and the number of the second limit grooves 1-4-2 of the second limit groove type steel piece are 3, and the included angle between each of the first limit grooves 1-2-2 and the second limit grooves 1-4-2 and the corresponding rotation center is 45 degrees.

The front end of the upper movable part 1-2 is riveted with a movable chuck 1-1-2, the movable chuck rotates up and down around the rivet 1-1-2, and the movable chucks of the left arm and the right arm form a involutory clamping surface during clamping.

As shown in fig. 1, the clamp handle comprises a small clamp handle 8, a large clamp handle 4, an opening handle 7 and a tension spring 9, wherein the large clamp handle 4 is fixedly connected with the right connecting arm 1-4, the small clamp handle 8 is movably connected with the left connecting arm 1-5 through a rivet 10, the opening handle is movably connected with the middle part of the small clamp handle through a rivet or a hinge, the lower end part of the left connecting arm 1-5 is provided with a hook hole, the middle part of the large clamp handle is provided with a hook head, one end of the tension spring is buckled on the hook hole of the left connecting arm 1-5, and the other end of the tension spring is buckled on the hook head at the middle part of the large clamp handle;

the inner side of the small forceps handle 8 is also movably connected with a middle gear 5 through a rivet or a hinge, and the other end of the middle gear 5 extends into the large forceps handle 4.

The tail of the large clamp handle 4 is provided with an adjusting bolt 6, and the head of the adjusting bolt 6 tightly props against the other end of the middle gear 6 during clamping, so that the adjusting bolt 6 is rotated to adjust the opening and closing degree between the right connecting arm 1-4 and the left connecting arm 1-51.

The lower movable part 1-3 comprises an upper connecting block and a lower connecting block, the upper waist hole 1-3-5 is positioned on the upper connecting block, the lower waist hole 1-3-6 is positioned on the lower connecting block, and the upper connecting block and the lower connecting block can be integrally connected by adopting the pressing plate 1-3-4 and through 4 rivets 1-3-3 or integrally formed by welding.

As shown in fig. 2-6, taking a right arm as an example, the right arm includes an upper movable portion 1-2 and a lower movable portion 1-3, a movable chuck 1-1 is riveted at the front end of the upper movable portion 1-2, the movable chuck 1-1 rotates up and down around the rivet 1-1-2, and the movable chucks of the left arm and the right arm form a butt joint clamping surface during clamping. It should be noted that the movable chuck 1-1-1 may be omitted, and the chuck may be formed directly at the upper end of the upper movable portion 1-2, which is called a fixed chuck.

As shown in FIG. 3, a rivet hole 1-2-3 and three first limit grooves 1-2-2 are arranged below the upper movable part 1-2, and each first limit groove is distributed around the rivet hole 1-2-3 at an angle of 45 degrees. The first limit groove entrance angle is set to be 0-10 degrees, preferably 3-6 degrees.

Thus, the upper movable portion 1-2 of the right arm can be rotated 45 degrees and 90 degrees counterclockwise around the rivet 1-3-1 on the lower movable portion 1-3 so that the angle α between the lower movable portion and the connecting arm is 135 degrees or the angle α between the lower movable portion and the connecting arm is 90 degrees. Alpha may be 90 deg., 135 deg., 190 deg..

The lower movable part 1-3 takes the movable connection point of the lower movable part 1-3 and the connecting arm as a rotation center, and the lower movable part 1-3 is rotated far away from the central line direction to adjust the included angle between the lower movable part 1-3 and the connecting arm, because three second limiting grooves are arranged, each first limiting groove is mutually distributed around the rivet hole 1-4-3 according to an angle of 45 degrees, the relative positions of the two first limiting grooves are adjusted to 90 degrees which are mutually perpendicular from the same plane, and the included angle is more than or equal to 0 degree and less than or equal to 90 degrees, and the angle can be 0 degree, 45 degrees and 90 degrees.

The lower movable part of the right arm comprises an upper connecting block and a lower connecting block, the upper waist hole 1-3-5 is positioned on the upper connecting block, the lower waist hole 1-3-6 is positioned on the lower connecting block, and the upper connecting block and the lower connecting block are connected through rivets or welded to form a whole.

As shown in fig. 5, each locking screw 1-3-2 is sleeved with a compression spring 1-3-2', and each locking screw 1-3-2 penetrates through the waist hole and is connected with a corresponding nut 1-3-2 "so as to adjust the pressure of the compression spring through an adjusting nut. Because the locking screw 1-3-2 and the spring compression spring 1-3-2 'are arranged in the upper waist hole 1-3-5, the locking screw 1-3-2 is pushed to enable the locking screw 1-3-2 to move up and down along with the nut 1-3-2' in the upper waist hole 1-3-5, when the upper movable part 1-2-1 of the right arm is rotated left by 45 degrees or 90 degrees, the first limiting groove 1-2 on the upper movable part is positioned at the same position with the upper waist hole, and the locking screw 1-3-2 is pushed to enter the first limiting groove 1-2-2, so that the upper movable part 1-2-1 is relatively fixed on the lower movable part 1-3.

As shown in fig. 6, the lower waist hole 1-3-6 of the lower movable portion 1-3 is located at the lower connecting block, the right connecting arm 1-4 is provided with a second limit groove 1-4-2, and the second limit groove 1-4-2 is arranged around the rivet hole 1-4-1 in two directions of 45 degrees and 90 degrees. Accordingly, the locking screws in the lower waist holes 1-3-6 move up and down in the lower waist holes together with the corresponding compression springs. The lower movable part 1-3 can rotate 45 degrees and 90 degrees rightwards around the rivet 1-4-1 on the right connecting arm 1-4, the locking screw is moved into the upper second limit groove 1-4-2 of the right connecting arm, and the lower movable part 1-3 is relatively fixed on the right connecting arm 1-4. The second limit groove 1-4-2 is set at an entrance angle of 0-10 degrees, preferably 5-8 degrees.

The right connecting arm 1-4 is provided with two rivet holes 1-4-3, the two rivet holes 1-4-3 are fixedly riveted with the large clamp handle 4 through rivets, and the right connecting arm 1-4 and the large clamp handle 4 can be welded into a whole in a welding mode.

It should be noted that the connection structure of the left arm is the same as that of the right arm, but the rotation direction thereof is opposite to that of the right arm. The lower end of the left connecting arm is movably connected with the right connecting arm 1-5.

As shown in fig. 3 and 4, a common dynamic is provided that is created after the rotation of the left and right arms.

As shown in fig. 1, a configuration is provided in which the left and right arms are not rotated;

as shown in fig. 7-11, the present application also provides a variety of configurations that result from rotating the upper and lower movable portions.

Therefore, according to the size of the clamping object, the distance between the clamping heads is adjusted, and the clamping requirements of objects with different sizes are met.

The long-arm locking pliers provided by the application have the same using and operating steps in different forms, and the working steps are as follows:

the operation is as follows:

the opening handle 7 is moved outwards (leftwards), the upper end of the opening handle 7 is separated from the middle gear 5, the small clamp handle 8 is driven to move leftwards, the left connecting arm shoulder 1-5 and the left arm 1' rotate anticlockwise around the rivet 1-4-3 on the large clamp handle 4 under the action of the spring 9, the pliers are opened, the two movable chucks are separated, and the clamped object is loosened.

And (3) clamping:

pressing down the small pliers handle 8 to right drives the left connecting arm to rotate clockwise around the rivet 10, the two movable chucks draw close to clamp the object, continuing pressing down the small pliers handle 8 to the right, opening one end of the handle 7 to draw close to the middle gear 5, at the moment, symmetrically locking the pliers, and clamping the object to be clamped by the two movable chucks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model. The foregoing are merely some embodiments of the utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. A long-armed locking pliers comprising:

the clamp body and the left arm (1 ') and the right arm (1) which are symmetrically arranged on the clamp body by taking the central line of the locking pliers as a reference, wherein the left arm (1') and the right arm (1) both comprise an upper movable part (1-2) and a lower movable part (1-3), the lower end of the upper movable part (1-2) is movably connected with the upper end of the lower movable part (1-3),

the upper movable parts (1-2) of the left arm (1') and the right arm (1) take the movable connection point of the upper movable parts and the lower movable parts (1-3) as a rotation center, and the upper movable parts (1-2) are rotated towards the direction close to the central line to adjust the included angle between the upper movable parts and the lower movable parts, so that the relative positions of the upper movable parts and the lower movable parts are adjusted from 180 degrees on the same plane to 90 degrees which are mutually perpendicular, and the included angle is 90 degrees or more and alpha or less than 180 degrees.

2. The long-arm locking pliers according to claim 1, wherein the pliers body comprises a pliers handle and corresponding connecting arms arranged on the pliers handle, the connecting arms comprise left connecting arms (1-5) and right connecting arms (1-4), the lower end of each lower movable part is respectively and movably connected with the corresponding connecting arm,

the lower movable part (1-3) takes the movable connection point of the lower movable part and the connecting arm as a rotation center, and the lower movable part (1-3) is rotated in the direction away from the center line to adjust the included angle between the lower movable part (1-3) and the connecting arm, so that the relative positions of the lower movable part and the connecting arm are adjusted to 90 degrees which are perpendicular to each other from the same plane, and the included angle is more than or equal to 0 degree and less than or equal to 90 degrees.

3. A long arm power wrench as claimed in claim 2, wherein the lower movable portion (1-3) includes an upper waist hole (1-3-5) and a lower waist hole (1-3-6) provided along a length direction thereof, and locking screws (1-3-2) are provided in the upper waist hole (1-3-5) and the lower waist hole (1-3-6);

the lower end of the upper movable part (1-2) is provided with a first limiting groove section steel piece, the first limiting groove section steel piece is provided with a plurality of first limiting grooves (1-2-2), the upper end of the connecting arm is provided with a second limiting groove section steel piece, and the second limiting groove section steel piece is provided with a plurality of second limiting grooves (1-4-2);

the locking screw (1-3-2) moves up and down in the upper waist hole (1-3-5) and limits and fixes the upper movable part (1-2) after moving to the first limiting groove (1-2-2);

the locking screw (1-3-2) moves up and down in the lower waist hole (1-3-6) and limits and fixes the lower movable part (1-3) after moving to the second limiting groove (1-4-2).

4. A long arm power wrench as claimed in claim 3, wherein the first limit groove (1-2-2) and the second limit groove (1-4-2) are open in opposite directions.

5. A long arm power wrench according to claim 3, wherein each locking screw (1-3-2) is sleeved with a compression spring (1-3-2 '), each locking screw (1-3-2) penetrates through the upper waist hole or the lower waist hole, and the locking screw is connected with a corresponding nut (1-3-2 ") so as to adjust the pressure of the compression spring (1-3-2') through an adjusting nut.

6. The long-arm locking pliers according to claim 4, wherein the number of first limit grooves (1-2-2) of the first limit groove steel member and the number of second limit grooves (1-4-2) of the second limit groove steel member are 3, and the included angle between each of the first limit grooves (1-2-2) and the second limit grooves (1-4-2) and the corresponding rotation center is 45 °.

7. The long arm power wrench as claimed in claim 4, wherein the front end of the upper movable portion (1-2) is riveted with a movable chuck (1-1-1), the movable chuck rotates up and down around the rivet (1-1-2), and the movable chucks of the left arm and the right arm form a mating clamping surface during clamping.

8. The long-arm large power pliers according to claim 2, wherein the pliers handle comprises a small pliers handle (8), a large pliers handle (4), an opening handle (7) and a tension spring (9), the large pliers handle (4) is fixedly connected with the right connecting arm (1-4), the small pliers handle (8) is movably connected with the left connecting arm (1-5), the opening handle (7) is movably connected with the middle part of the small pliers handle (8) through a rivet or a hinge, one end of the tension spring is buckled on the left connecting arm (1-5), and the other end of the tension spring is buckled on the middle part of the large pliers handle;

the inner side of the small forceps handle (8) is also movably connected with a middle gear (5) through a rivet or a hinge, and the other end of the middle gear (5) stretches into the large forceps handle (4).

9. The long-arm locking pliers according to claim 8, wherein an adjusting bolt (6) is arranged at the tail of the pliers handle (4), the head of the adjusting bolt (6) tightly abuts against the other end of the middle gear (5) during clamping, and the adjusting bolt (6) is used for adjusting the opening degree between the right connecting arm (1-4) and the left connecting arm (1-5).

10. The long arm power wrench as claimed in claim 5, wherein the lower movable part (1-3) comprises an upper connection block and a lower connection block, the upper waist hole (1-3-5) is located at the upper connection block, the lower waist hole (1-3-6) is located at the lower connection block, and the upper connection block and the lower connection block are integrally formed by rivet connection or welding.