CN113021206A

CN113021206A - Locking pliers with automatic adjusting function

Info

Publication number: CN113021206A
Application number: CN201911341315.1A
Authority: CN
Inventors: 王骞; 于金汕; 王伟刚; 张旭文
Original assignee: Weihai Maxpower Advanced Tool Co ltd
Current assignee: Weihai Maxpower Advanced Tool Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2021-06-25

Abstract

The invention discloses locking pliers with an automatic adjusting function, which comprise a fixed jaw, a fixed handle, a movable jaw, a movable handle, a support plate, a lifting piece, an adjusting bolt, a tension spring, a guide rail, a locking block, a large pressure spring, a baffle, a cylinder, a small pressure spring and a rivet which are connected in a matched manner. The front end of the locking block is provided with a plane and an inclined plane, the cylinder rolls at the inclined plane and the plane, the front end of the locking block is provided with a through groove, and the lower side of the locking block is provided with an adjusting bolt. The baffle has raised parts on two sides, the raised parts contact with the front end plane and the inclined plane of the lock block and can move freely, and the rest parts are in the through groove of the lock block. The support plate is provided with a special-shaped bulge which is contacted with the baffle. The cylinder can be replaced by a profile. Compared with the traditional locking pliers, the adjustable clamp does not need to frequently adjust the adjusting bolt to clamp a workpiece, and is very convenient to use.

Description

Locking pliers with automatic adjusting function

Technical Field

The invention relates to the technical field of locking pliers with manual tools, in particular to locking pliers with an automatic adjusting function.

Background

The existing traditional locking pliers generally comprise a fixed jaw, a fixed handle, a movable jaw, a movable handle, a support plate, a lifting piece, an adjusting bolt, a tension spring and a rivet. The fixed jaw and the fixed handle are connected together by welding, and the movable jaw and the fixed handle and the movable handle are connected together by rivets. The adjusting bolt is positioned at the tail part of the fixed handle. One end of the support plate is connected with the movable handle through a rivet, and the other end of the support plate is contacted with the head of the adjusting bolt. When the movable handle is pressed, the movable handle drives the movable jaw by taking one end of the support plate as a fulcrum, and the movable jaw starts to rotate and the fixed jaw clamps a workpiece. Traditional locking pliers, because the work piece is not of uniform size needs often to adjust adjusting bolt when using at every turn and satisfies the operation requirement, the availability factor is low, and it is very inconvenient to use.

Disclosure of Invention

The invention aims to overcome the defects of the technology and provide the locking pliers with the automatic adjusting function, which are reasonable in design, simple in structure, easy to manufacture and convenient to use.

The technical scheme adopted by the invention is as follows: a locking pliers with automatic regulating function is composed of fixed jaw, fixed handle, movable jaw, movable handle, supporting plate, lifting plate, regulating bolt, tension spring, guide track, locking block, big pressure spring, baffle, cylinder, small pressure spring and rivet. A guide rail is welded in the fixed handle, a large pressure spring and a locking block are sleeved on the guide rail, and a baffle, a cylinder, a small pressure spring and an adjusting bolt are arranged on the locking block. The fixed jaw is connected with the fixed handle, and the movable jaw is respectively connected with the movable handle and the fixed handle. The movable handle is connected with the support plate and the movable jaw. The lifting piece is connected with the movable handle. The support plate is connected with the movable handle and the locking block. The front end of a locking block is provided with a plane and an inclined plane, a cylinder rolls at the inclined plane and the plane, the front end of the locking block is provided with a through groove, and the lower side of the locking block is provided with an adjusting bolt. The two sides of the baffle are provided with convex parts, the convex parts of the baffle are contacted with the plane and the inclined plane of the front end of the locking block and can move freely, and the rest parts are arranged in the through groove of the locking block. The three support plates are characterized in that special-shaped bulges are arranged on the three support plates. The characteristic four cylinders can be replaced by special-shaped pieces. When the locking pliers clamp a workpiece, the movable handle pushes the rotating support plate, the support plate pushes the locking block to move backwards along the guide rail, the movable handle drives the support plate to rotate, the special-shaped bulge of the support plate is far away from the baffle plate when the support plate is in a proper position, the baffle plate is in a free movable state, the baffle plate does not restrain the cylinder on the plane of the locking block any more, the cylinder on the plane of the locking block enters the inclined plane at the front end of the locking block under the pushing of the small pressure spring, the cylinder pushes the locking block to rotate anticlockwise, the locking block is forced to be in a friction locking state with the guide. When the clamping is not used for workpieces of different sizes, the locking block can be locked in a friction mode at a proper position and provides supporting force, clamping force is provided for the movable jaw, the adjusting bolt does not need to be adjusted frequently, when the locking pliers are opened, the movable handle drives the supporting plate to rotate, the abnormal-shaped protruding portion of the supporting plate contacts the middle portion of the baffle plate, the baffle plate is forced to rotate, the cylinder on the inclined plane of the locking block is pushed to move backwards to enter the plane of the locking block, the locking block is in an unlocking state at the moment, the locking block is reset under the action of the large pressure spring.

Detailed Description

The locking pliers with the automatic adjusting function comprise a fixed jaw 1, a fixed handle 2, a rivet 3, a tension spring 4, a guide rail 5, a locking block 6, a large pressure spring 7, a movable jaw 8, a rivet 9, a rivet 10, a support plate 11, a movable handle 12, a rivet 13, a baffle 14, a cylinder 15, a small pressure spring 16, an adjusting bolt 17 and a lifting piece 18. The body of the fixed jaw 1 is connected with the head of the fixed handle 2. The guide rail 5 is positioned on the body part of the fixed handle 2, the locking block 6 is sleeved on the guide rail 5, and the large pressure spring 7 is sleeved on the guide rail 5 and is in contact with the locking block 6. The support plate 11 is connected with the movable handle 12 through a rivet 10 and connected with the locking block 6 through a rivet 13, a cylinder 15 and a small pressure spring 16 are placed on the plane of the front end of the locking block 6, a baffle 14 is arranged in a through groove in the front end of the locking block 6, and an adjusting bolt 17 is arranged on the lower side of the locking block 6. When the power tongs clamps a workpiece, the movable handle 12 rotates and pushes the support plate 11, the support plate 11 pushes the lock block 6 to move backwards, the movable handle 12 drives the support plate 11 to rotate, the special-shaped bulge of the support plate 11 is far away from the baffle 14 when the power tongs are in a proper position, the baffle 14 is in a free movable state, the baffle 14 does not restrain the cylinder 15 on the plane of the lock block 6 at the moment, the cylinder 15 on the plane of the lock block 6 enters the inclined plane at the front end of the lock block 6 under the pushing of the small pressure spring 16, the cylinder 15 pushes the lock block 6 to rotate anticlockwise to force the lock block 6 and the guide rail 5 to be in a friction locking state, the lock block 6 provides supporting force for the support plate 11, the movable handle 12 is gripped to drive the movable jaw 8 to rotate to clamp the workpiece, when the power tongs are opened, the movable handle 12 drives the support plate 11 to rotate, the special-shaped bulge of the support plate 11 contacts the middle, the locking piece 6 is now in the unlocked state. The locking block 6 is reset under the pushing of the large pressure spring 7. The locking pliers with the automatic adjusting function have the design effect.

In the movement implementation process, the key is that when the locking pliers clamp a workpiece, the movable handle 12 pushes and rotates the support plate 11 through the rivet 10, the support plate 11 pushes the locking block 6 to move backwards through the rivet 13, at the moment, the support plate 11 continues to rotate, the special-shaped bulge of the support plate 11 is far away from the baffle 14 when the support plate 11 is in a proper position, the baffle 14 is in a free moving state and does not restrain the cylinder 15 on the plane of the locking block 6, the cylinder 15 on the plane of the locking block 6 enters the inclined plane of the locking block 6 under the pushing of the small pressure spring 16, and the cylinder 15 pushes the locking block 6 to rotate anticlockwise, so that the locking block 6 and the guide rail 5 are in. The locking block 6 provides a supporting force for the support plate 11, and a clamping force is provided for the movable jaw 8 through the movable handle 12. When the locking pliers are opened, the movable handle 12 drives the support plate 11 to rotate through the rivet 10, the special-shaped bulge of the support plate 11 contacts the middle part of the baffle plate 14, the baffle plate 14 is forced to rotate, the cylinder 15 at the inclined plane at the front end of the locking block 6 is pushed to move backwards to enter the plane at the front end of the locking block 6, and at the moment, the locking block 6 is in an unlocking state. The locking block 6 is reset under the pushing of the large pressure spring 7.

Description of the drawings:

FIG. 1 is a schematic view of the closed state of the locking pliers with automatic adjusting function according to the invention;

FIG. 2 is a schematic view of the opening state of the locking pliers with the automatic adjusting function according to the invention;

FIG. 3 is a partially enlarged view of the closed state of the locking pliers with automatic adjustment function according to the present invention;

FIG. 4 is a partially enlarged view of the opening state of the locking pliers with the automatic adjusting function according to the present invention;

FIG. 5 is a schematic view of a locking block of locking pliers with automatic adjustment function according to the present invention;

FIG. 6 is a left side view of FIG. 5;

FIG. 7 is a schematic view of the guide rail of the locking pliers with automatic adjustment function according to the present invention;

FIG. 8 is a left side view of FIG. 7;

FIG. 9 is a schematic view of a locking pliers stop with automatic adjustment of the present invention;

FIG. 10 is a left side view of FIG. 9;

FIG. 11 is a schematic view of a locking pliers support plate with automatic adjustment of the present invention;

fig. 12 is a top view of fig. 11.

The labels in the figure are: 1. the device comprises a fixed jaw, 2, a fixed handle, 3, a rivet, 4, a tension spring, 5, a guide rail, 6, a locking block, 7, a large pressure spring, 8, a movable jaw, 9, a rivet, 10, a rivet, 11, a support plate, 12, a movable handle, 13, a rivet, 14, a baffle, 15, a cylinder, 16, a small pressure spring, 17, an adjusting bolt, 18 and a lifting piece.

Claims

1. A locking pliers with automatic regulating function features that a cylindrical body with a through slot and an adjusting bolt is arranged at the front end of a locking block, which has a plane and an inclined plane, and a cylinder rolls on said inclined plane and said inclined plane.

2. The locking pliers as claimed in claim 1, wherein the two sides of the blocking plate have protrusions, the protrusions of the blocking plate contact with the front end of the locking block and the inclined surface and are free to move, and the rest of the blocking plate is in the through groove of the locking block.

3. The locking pliers as claimed in claim 1 or 2 wherein the three support plates have shaped protrusions which contact the stop.

4. Locking pliers with automatic adjustment function according to claim 3 characterized in that the four cylinders can be replaced by a profiled element.