CN221849889U - Automatically adjustable locking pliers - Google Patents

Abstract

The utility model provides an automatically adjustable locking pliers, belonging to the technical field of locking pliers. The automatically adjustable locking pliers include a clamping mechanism and a driving mechanism, the clamping mechanism includes a fixed handle and a movable handle, the movable handle is hingedly mounted on one side of the fixed handle through a torsion spring, a support plate is mounted on the top of the fixed handle, a mounting groove and a pair of slide grooves are provided at the top center of the support plate, and the pair of slide grooves are connected to the two sides of the mounting groove, a turntable is rotatably connected inside the mounting groove, a driving bar is mounted on the top of the turntable, connecting rods are hinged at both ends of the driving bar, sliders are slid inside the pair of slide grooves, a clamp body is mounted on the top of the slider, a groove is provided on one side of the clamp body, the connecting rod and the groove are hinged, and the technical solution can make a pair of clamp bodies move closer to or away from each other in a straight line, so that the clamped objects with regular shapes have the same contact area with them, so as to prevent the outer side of the object from being damaged.

Description

Automatically adjustable locking pliers

Technical Field

The utility model relates to the technical field of locking pliers, in particular to a pair of automatically adjustable locking pliers.

Background Art

Locking pliers are mainly used to clamp parts for riveting, welding, grinding and other processing. Their characteristics are that the jaws can be locked and generate a large clamping force to prevent the clamped parts from loosening. For locking pliers used to clamp workpieces, they are usually composed of a fixed clamp body and a movable clamp body that moves in a circle around a rotating shaft.

An automatically adjustable locking pliers with publication number CN215148260U comprises a fixed pliers handle, a fixed pliers body is arranged on the left side of the fixed pliers handle, a connecting shaft is arranged on the left side of the top of the fixed pliers handle, a movable pliers handle is arranged on the top of the fixed pliers handle, a movable pliers body is arranged on the left side of the movable pliers handle, a pin is arranged on the left side of the top of the movable pliers handle, a push rod is arranged on the left side of the bottom of the fixed pliers handle, a connecting frame is fixedly connected to the bottom of the movable pliers handle, and a connecting block is fixedly connected to the right side of the fixed pliers handle;

This technical solution can change the fulcrum of the fixed pliers body through the cooperation of the push rod and the fixed sleeve, the reset spring, the connecting slider and the push plate, and can select different fixed pliers bodies for use according to the actual needs. At the same time, this technical solution is composed of a fixed pliers body and a movable pliers body that performs circular motion around the connecting axis. However, since the movable pliers body performs curved motion, after clamping the object, the contact surface between the movable pliers body and the object is often small. In order to ensure that the clamped object does not move, the pressure applied by the movable pliers body to the object will be greater than the pressure applied by the fixed pliers body to the object. For some objects with lower hardness, the contact point with the movable pliers body may be damaged.

Utility Model Content

In order to make up for the above shortcomings, the utility model provides an automatically adjustable locking pliers.

The utility model is achieved in this way:

A kind of automatically adjustable pliers, including a clamping mechanism and a driving mechanism, the clamping mechanism includes a fixed handle and a movable handle, the movable handle is hingedly mounted on one side of the fixed handle through a torsion spring, a support plate is mounted on the top of the fixed handle, a mounting groove and a pair of slide grooves are provided at the top center of the support plate, and the pair of slide grooves are connected to the two sides of the mounting groove, a turntable is rotatably connected inside the mounting groove, a driving bar is mounted on the top of the turntable, connecting rods are hinged at both ends of the driving bar, sliders are slid inside the pair of slide grooves, a pliers body is mounted on the top of the slider, a groove is provided on one side of the pliers body, and the connecting rod and the groove are hinged.

The beneficial effect of adopting the above further scheme is that when the turntable rotates, the driving bar and the connecting rod can pull the clamp bodies on both sides thereof to make a linear motion close to each other. Then, when clamping a regular object, the contact area between a pair of clamp bodies and the object is the same, and the contact area is larger than that of the prior art, so the friction force they exert on the object is also greater. This ensures that the object will not move easily while reducing damage to the surface of the object due to excessive pressure.

Furthermore, an installation cavity is opened at the top of the fixed handle, and the driving mechanism includes a rotating shaft, a connecting shaft and a driving shaft, and the rotating shaft, connecting shaft and driving shaft are installed inside the installation cavity through bearings, the driving shaft and the connecting shaft are transmission connected, the connecting shaft and the rotating shaft are transmission connected, and the rotating shaft is connected to the turntable.

Furthermore, a motor is installed inside the fixed handle, and the output end of the motor is transmission-connected to the drive shaft, a driving bevel gear is installed on the outside of the drive shaft, a driven bevel gear is installed on the outside of the connecting shaft, and the driving bevel gear and the driven bevel gear are meshingly connected.

Furthermore, a worm is installed on the outer side of the connecting shaft, a worm wheel is installed on the outer side of the rotating shaft, and the worm and the worm wheel are meshed and connected.

The beneficial effect of adopting the above further scheme is that the motor drives the driving shaft to rotate, and the connecting shaft is rotated through the active bevel gear and the driven bevel gear. At the same time, the rotating shaft is rotated under the action of the worm and the worm wheel, thereby driving the turntable to rotate. At the same time, the worm and the worm wheel have the ability of self-locking, so when the motor is powered off, the turntable can also be kept fixed.

Furthermore, a push switch is installed on one side of the fixed handle, and the push switch is electrically connected to the motor. The movable handle can squeeze the push switch, and a reset switch is installed on the other side of the fixed handle.

Furthermore, a battery pack is installed inside the fixed handle, and the battery pack is electrically connected to the motor. A USB interface is installed at the bottom end of the fixed handle, and the USB interface is electrically connected to the battery pack.

The beneficial effect of adopting the above further scheme is that when the movable handle is pressed, the movable handle will squeeze the push switch, causing the motor to work and drive the turntable to rotate to pull a pair of pliers. When the reset switch is pressed, the motor can drive the drive disk to reverse, thereby moving the pair of pliers away. At the same time, the USB interface can charge the battery pack, and the battery forms a circuit with the push switch, reset switch, and motor to power them.

Furthermore, the outer sides of the fixed handle and the movable handle are covered with a rubber anti-slip layer.

The beneficial effect of the utility model is that the utility model obtains an automatically adjustable locking pliers through the above design. When the turntable rotates, the pliers on both sides can be pulled by the driving bar and the connecting rod to make them do linear motion close to each other. Then, when clamping a regular object, the contact area between a pair of pliers and the object is the same, and the contact area is larger than that in the prior art, so the friction force they exert on the object is also greater. In this way, while ensuring that the object will not move easily, the damage to the surface of the object due to excessive pressure can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the three-dimensional structure of an automatically adjustable locking pliers provided by the utility model;

FIG2 is a schematic diagram of the exploded structure of an automatically adjustable locking pliers provided by the utility model;

FIG3 is an enlarged schematic diagram of the structure A in FIG2 ;

FIG. 4 is an enlarged schematic diagram of the structure B in FIG. 2 .

In the figure: 100, clamping mechanism; 1001, fixed handle; 1002, push switch; 1003, movable handle; 1004, support plate; 1005, clamp body; 1006, turntable; 1007, drive bar; 1008, connecting rod; 1009, groove; 1010, installation cavity; 1011, installation groove; 1012, slide groove; 1013, slider; 200, driving mechanism; 2001, rotating shaft; 2002, connecting shaft; 2003, driving shaft; 2004, worm wheel; 2005, worm; 2006, driven bevel gear; 2007, active bevel gear.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

Embodiment 1 of the utility model of an automatically adjustable locking pliers

The utility model provides the following technical solutions: as shown in Figures 1 to 4, it includes a clamping mechanism 100 and a driving mechanism 200, the clamping mechanism 100 includes a fixed handle 1001 and a movable handle 1003, the movable handle 1003 is hingedly installed on one side of the fixed handle 1001 through a torsion spring, a support plate 1004 is installed on the top of the fixed handle 1001, a mounting groove 1011 and a pair of slide grooves 1012 are opened at the top center of the support plate 1004, and the pair of slide grooves 1012 are connected to the two sides of the mounting groove 1011, the mounting groove 1011 is internally rotatably connected with a turntable 1006, a driving bar 1007 is installed on the top of the turntable 1006, and connecting rods 1008 are hinged at both ends of the driving bar 1007. A slider 1013 slides inside a pair of slide grooves 1012, a pliers body 1005 is installed on the top of the slider 1013, a groove 1009 is provided on one side of the pliers body 1005, and a connecting rod 1008 is hinged to the groove 1009. When the turntable 1006 rotates, the driving bar 1007 and the connecting rod 1008 can pull the pliers bodies 1005 on both sides thereof to make a linear motion approaching each other. Then, when clamping a regular object, the contact area between the pair of pliers bodies 1005 and the object is the same, and the contact area is larger than that of the prior art, so the friction force they exert on the object is also greater. This ensures that the object will not move easily while reducing the damage to the surface of the object due to excessive pressure.

Embodiment 2 of the utility model of an automatically adjustable locking pliers

1 to 4, specifically, a mounting cavity 1010 is provided at the top of the fixed handle 1001, and the driving mechanism 200 comprises a rotating shaft 2001, a connecting shaft 2002 and a driving shaft 2003, the rotating shaft 2001, the connecting shaft 2002 and the driving shaft 2003 are mounted inside the mounting cavity 1010 through bearings, the driving shaft 2003 and the connecting shaft 2002 are transmission-connected, the connecting shaft 2002 and the rotating shaft 2001 are transmission-connected, the rotating shaft 2001 is connected to the turntable 1006, a motor is installed inside the fixed handle 1001, and the output end of the motor is transmission-connected to the driving shaft 2003, an active bevel gear 2007 is installed on the outer side of the driving shaft 2003, and a A driven bevel gear 2006 is provided, and the active bevel gear 2007 is meshed with the driven bevel gear 2006. A worm 2005 is installed on the outer side of the connecting shaft 2002. A worm wheel 2004 is installed on the outer side of the rotating shaft 2001, and the worm 2005 and the worm wheel 2004 are meshed with each other. The motor drives the driving shaft 2003 to rotate, and the connecting shaft 2002 is rotated through the active bevel gear 2007 and the driven bevel gear 2006. At the same time, the rotating shaft 2001 is rotated under the action of the worm 2005 and the worm wheel 2004, thereby driving the turntable 1006 to rotate. At the same time, the worm 2005 and the worm wheel 2004 have the ability of self-locking, so when the motor is powered off, the turntable 1006 can also be kept fixed.

Embodiment 3 of the automatic adjusting locking pliers of the utility model

Referring to Figures 1 to 4, specifically, a push switch 1002 is installed on one side of the fixed handle 1001, and the push switch 1002 is electrically connected to the motor. The movable handle 1003 can squeeze the push switch 1002. A reset switch is installed on the other side of the fixed handle 1001. A battery pack is installed inside the fixed handle 1001, and the battery pack is electrically connected to the motor. A USB interface is installed at the bottom end of the fixed handle 1001, and the USB interface is electrically connected to the battery pack. When the movable handle 1003 is pressed, the movable handle 1003 will squeeze the push switch 1002, so that the motor works and drives the turntable 1006 to rotate to pull a pair of clamp bodies 1005. When the reset switch is pressed, the motor can drive the drive disk 1006 to reverse, thereby moving the pair of clamp bodies 1005 away. At the same time, the USB interface can charge the battery pack, and the battery forms a circuit with the push switch, the reset switch, and the motor to power them.

Specifically, the working principle of the automatic adjusting pliers is as follows: when in use, the object to be clamped is placed between the pair of pliers 1005, and then the movable handle 1003 is pressed, and the movable handle 1003 will squeeze the pressing switch 1002, so that the motor works, and the motor drives the driving shaft 2003 to rotate, and the connecting shaft 2002 is rotated through the active bevel gear 2007 and the driven bevel gear 2006, and at the same time, the rotating shaft 2001 is rotated under the action of the worm 2005 and the worm wheel 2004, thereby driving the rotating disk 1 006 rotates. When the turntable 1006 rotates, the driving bar 1007 and the connecting rod 1008 can pull the clamp bodies 1005 on both sides thereof to make them move linearly towards each other, thereby clamping the object. Then the movable handle 1003 is released. Since the worm 2005 and the worm wheel 2004 have the ability of self-locking, the turntable 1006 can be kept fixed. When the object is processed, the reset switch is pressed to make the motor drive the driving disk 1006 to reverse, thereby moving a pair of clamp bodies 1005 away from each other to release the object.

The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (7)

1. An automatically adjustable locking pliers, characterized in that it comprises a clamping mechanism (100) and a driving mechanism (200), wherein the clamping mechanism (100) comprises a fixed handle (1001) and a movable handle (1003), wherein the movable handle (1003) is hingedly mounted on one side of the fixed handle (1001) through a torsion spring, and a support plate (1004) is mounted on the top of the fixed handle (1001), and a mounting groove (1011) and a pair of slide grooves (1012) are provided at the top center of the support plate (1004), and the pair of slide grooves (1012) and the mounting grooves The two sides of the mounting groove (1011) are connected, a turntable (1006) is rotatably connected inside the mounting groove (1011), a driving bar (1007) is installed on the top of the turntable (1006), and connecting rods (1008) are hinged at both ends of the driving bar (1007), a pair of sliding blocks (1013) are slidably provided inside the sliding grooves (1012), a clamp body (1005) is installed on the top of the sliding block (1013), a groove (1009) is provided on one side of the clamp body (1005), and the connecting rod (1008) and the groove (1009) are hinged. 2. An automatically adjustable locking pliers according to claim 1, characterized in that a mounting cavity (1010) is provided at the top of the fixed handle (1001), the driving mechanism (200) comprises a rotating shaft (2001), a connecting shaft (2002) and a driving shaft (2003), the rotating shaft (2001), the connecting shaft (2002) and the driving shaft (2003) are mounted inside the mounting cavity (1010) through bearings, the driving shaft (2003) and the connecting shaft (2002) are transmission-connected, the connecting shaft (2002) and the rotating shaft (2001) are transmission-connected, and the rotating shaft (2001) is connected to the turntable (1006). 3. An automatically adjustable locking pliers according to claim 2, characterized in that a motor is installed inside the fixed handle (1001), and the output end of the motor is transmission-connected to the drive shaft (2003), a driving bevel gear (2007) is installed on the outside of the drive shaft (2003), a driven bevel gear (2006) is installed on the outside of the connecting shaft (2002), and the driving bevel gear (2007) and the driven bevel gear (2006) are meshingly connected. 4. An automatically adjustable locking pliers according to claim 3, characterized in that a worm (2005) is installed on the outer side of the connecting shaft (2002), a worm wheel (2004) is installed on the outer side of the rotating shaft (2001), and the worm (2005) and the worm wheel (2004) are engaged and connected. 5. An automatically adjustable locking pliers according to claim 4, characterized in that a push switch (1002) is installed on one side of the fixed handle (1001), and the push switch (1002) is electrically connected to the motor, the movable handle (1003) can squeeze the push switch (1002), and a reset switch is installed on the other side of the fixed handle (1001). 6. An automatically adjustable locking pliers according to claim 5, characterized in that a battery pack is installed inside the fixed handle (1001), and the battery pack is electrically connected to the motor, and a USB interface is installed at the bottom end of the fixed handle (1001), and the USB interface is electrically connected to the battery pack. 7. An automatically adjustable locking pliers according to claim 1, characterized in that the outer sides of the fixed handle (1001) and the movable handle (1003) are covered with a rubber anti-slip layer.