CN116619260A - Quick labor-saving opening method of locking pliers - Google Patents
Quick labor-saving opening method of locking pliers Download PDFInfo
- Publication number
- CN116619260A CN116619260A CN202310782689.7A CN202310782689A CN116619260A CN 116619260 A CN116619260 A CN 116619260A CN 202310782689 A CN202310782689 A CN 202310782689A CN 116619260 A CN116619260 A CN 116619260A
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- CN
- China
- Prior art keywords
- connecting plate
- pin
- movable handle
- unlocking pin
- cam
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- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The invention relates to the technical field of manual hardware tools, in particular to a quick labor-saving opening method of a locking pliers. The movable jaw is riveted with the fixed handle and the connecting plate through the rivet A and the rivet B respectively and rotates freely, the other end of the connecting plate is riveted with the supporting plate through the rivet C and rotates freely, a groove cavity for accommodating the supporting plate is formed in the connecting plate, a cam matched with the supporting plate is arranged in the groove cavity, the connecting plate is arranged in the groove cavity of the movable handle, the connecting plate and the cam are connected through a rotating pin, a unlocking pin penetrates through the movable handle, and an arc-shaped groove matched with the unlocking pin and a protruding portion are formed in the side portion of the connecting plate. The unlocking pin is matched with the arc-shaped groove when clamping the workpiece, so that the connecting plate can be locked, the unlocking pin loses the limit on the protruding part when the unlocking pin is pressed down, the connecting plate is unlocked, the movable handle is rotated to drive the cam to rotate, the cam jacks the supporting plate to unlock, the operation is simple and convenient, and the locking pliers can be prevented from being opened due to false touch.
Description
Technical field:
the invention relates to the technical field of manual hardware tools, in particular to a quick labor-saving opening method of a locking pliers.
The background technology is as follows:
the prior traditional locking pliers, such as the patent application with the publication number of CN209599144U and the name of a locking pliers with the ratchet wrench function, 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, a rivet and the like. The fixed jaw is connected with the fixed handle through welding, the movable jaw is connected with the fixed handle and the movable handle through 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 the rivets, and the other end of the support plate is contacted with the head part 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. The traditional locking pliers have the advantages that the lifting piece is required to be stirred when the jaws are opened, the operation is troublesome, the lifting piece has no locking structure, and the lifting piece is easy to be touched by mistake when the pliers are specifically operated, so that the locking pliers are opened.
In summary, how to realize the quick and labor-saving opening of the locking pliers becomes a technical problem to be solved in the industry.
The invention comprises the following steps:
the invention provides a quick labor-saving opening method of a locking pliers, which solves the problems that the lifting operation of the locking pliers is troublesome and the locking pliers are easy to open due to false touch in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the quick labor-saving opening method of the locking pliers comprises a fixed jaw, a movable jaw, a fixed handle, a movable handle, a tension spring, a support plate and an adjusting bolt, wherein the fixed jaw is welded at the front end of the fixed handle;
when a workpiece is clamped, the unlocking pin is matched with the connecting plate to lock the connecting plate, the connecting plate is driven to rotate when the movable handle is rotated, the tail part of the support plate is clamped into the fixed handle and props against the head part of the adjusting bolt, and when the tail part of the support plate, the rivet C and the rivet B are positioned in the same straight line, the front end of the support plate is clamped at the minimum diameter point of the cam to generate locking, and the locking pliers are locked at the moment;
when the unlocking pin is pressed down, the unlocking pin loses the limit on the connecting plate, the connecting plate does not rotate when the movable handle rotates, the movable handle drives the cam to rotate through the rotating pin, the maximum diameter point of the cam jacks up the support plate, the tail part of the support plate, the rivet C and the rivet B are not in the same straight line any more, and unlocking is realized under the reset action of the tension spring.
The connecting plate is internally provided with a groove cavity for accommodating the supporting plate, a cam matched with the supporting plate is arranged in the groove cavity, the connecting plate is arranged in the groove cavity of the movable handle, and the movable handle, the connecting plate and the cam are connected through a rotating pin.
The movable handle is internally penetrated with an unlocking pin, and the side part of the connecting plate is provided with an arc-shaped groove and a protruding part which are matched with the unlocking pin.
The rotary pin is a special-shaped pin, a hole with the same shape as the rotary pin is formed in the middle of the cam, a hole with the same shape as the rotary pin is formed in the movable handle, and the cam is driven to rotate through the rotary pin when the movable handle is rotated.
The hole corresponding to the rotary pin on the connecting plate is a round hole, the aperture of the round hole is consistent with the circumscribing circle of the rotary pin, and the rotary pin can not drive the connecting plate to rotate.
The unlocking pin is a push type unlocking pin, the unlocking pin is movably installed in a round hole of the movable handle, the shaft diameter of two ends of the unlocking pin is thick, the shaft diameter of the middle shaft is thin, one end of the unlocking pin is provided with a boss and a spring, and the other end of the unlocking pin is provided with a clamp spring.
When in an initial position, the arc-shaped groove at the side part of the connecting plate is matched with the position with the thick diameter of the unlocking pin, and the movable handle is rotated to drive the connecting plate to rotate.
The convex part at the side of the connecting plate is matched with the small diameter position of the unlocking pin when the unlocking pin is pressed, and the connecting plate does not rotate when the movable handle is rotated.
Torsion springs are arranged at two ends of the rotary pin, and two ends of each torsion spring are respectively contacted with the movable handle and the connecting plate.
The invention adopts the scheme and has the following beneficial effects:
through setting up the unlocking pin in movable handle, be equipped with unlocking pin matched with arc wall and bellying in even board lateral part, unlocking pin and arc wall cooperation can realize the locking to even the board when pressing down the unlocking pin, thereby the unlocking pin loses the restriction to the bellying when pressing down and releases the locking to even the board, rotates movable handle drive cam and rotates, and the cam jack-up extension board realizes the unblock, easy and simple to handle can avoid making the locking pliers open because of the mistake touch.
Description of the drawings:
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic diagram of a locking state structure of the present invention.
Fig. 3 is a schematic view of an unlock state structure of the present invention.
Fig. 4 is a schematic perspective view of the cam, support plate, connecting plate and movable handle of the present invention.
Fig. 5 is a schematic perspective view of the connecting plate and the unlocking pin according to the present invention.
Fig. 6 is a schematic perspective view of the movable handle of the present invention.
Fig. 7 is a schematic perspective view of a cam according to the present invention.
Fig. 8 is a schematic perspective view of an unlocking pin part of the present invention.
In the figure, 1, a fixed jaw, 2, a movable jaw, 3, a fixed handle, 4, a movable handle, 5, a tension spring, 6, a support plate, 7, an adjusting bolt, 8, a rivet A,9, a rivet B,10, a rivet C,11, a connecting plate, 12, a cam, 13, a rotating pin, 14, an unlocking pin, 15, an arc-shaped groove, 16, a protruding part, 17, a boss, 18, a spring, 19, a clamp spring, 20 and a torsion spring.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-8, a quick labor-saving opening method of a locking pliers comprises a fixed jaw 1, a movable jaw 2, a fixed handle 3, a movable handle 4, a tension spring 5, a support plate 6 and an adjusting bolt 7, wherein the fixed jaw 1 is welded at the front end of the fixed handle 3, the adjusting bolt 7 is connected to the tail of the fixed handle 3 through threads, the movable jaw 2 is respectively riveted with the fixed handle 3 and a connecting plate 11 through a rivet A8 and a rivet B9 and rotates freely, the other end of the connecting plate 11 is riveted with the support plate 6 through a rivet C10 and rotates freely, the movable handle 4 is connected with the connecting plate 11 through a rotary pin 13, a cam 12 matched with the support plate 6 is arranged in the middle of the rotary pin 13, and a unlocking pin 14 is arranged between the movable handle 4 and the connecting plate 11;
when a workpiece is clamped, the unlocking pin 14 is matched with the connecting plate 11 to lock the connecting plate 11, the connecting plate 11 is driven to rotate when the movable handle 4 is rotated, the tail of the support plate 6 is clamped into the fixed handle 3 and is propped against the head of the adjusting bolt 7, when the tail of the support plate 6, the rivet C10 and the rivet B9 are positioned on the same straight line, the front end of the support plate 6 is clamped at the minimum diameter point of the cam 12 to generate locking, and the locking pliers are locked at the moment;
when the unlocking pin is pressed down, the unlocking pin 14 loses the limit on the connecting plate 11, the connecting plate 11 does not rotate when the movable handle 4 rotates, the movable handle 4 drives the cam 12 to rotate through the rotary pin 13, the maximum diameter point of the cam 12 jacks up the support plate 6, the tail part of the support plate 6, the rivet C10 and the rivet B9 are not in the same straight line any more, and unlocking is realized under the reset action of the tension spring 5.
The connecting plate 11 is internally provided with a groove cavity for accommodating the support plate 6, the groove cavity is internally provided with a cam 12 matched with the support plate 6, the connecting plate 11 is arranged in the groove cavity of the movable handle 4, and the movable handle 4, the connecting plate 11 and the cam 12 are connected through a rotary pin 13.
The movable handle 4 is internally penetrated with a release pin 14, and the side part of the connecting plate 11 is provided with an arc groove 15 and a protruding part 16 which are matched with the release pin 14.
The rotary pin 13 is a special-shaped pin, a hole with the shape consistent with that of the rotary pin 13 is formed in the middle of the cam 12, two groups of through holes are formed in the movable handle 4, one group corresponds to the rotary pin 13, the other group corresponds to the unlocking pin 14, the hole with the shape consistent with that of the rotary pin 13 is formed in the movable handle 4, and the cam 12 is driven to rotate through the rotary pin 13 when the movable handle 4 is rotated.
The connecting plate 11 is provided with three groups of through holes, two groups of through holes correspond to the rivet B9 and the rivet C10, the other group of through holes correspond to the rotary pin 13, the holes corresponding to the rotary pin 13 on the connecting plate 11 are round holes, the aperture of the round holes is consistent with that of the rotary pin 13, and the rotary pin 13 can not drive the connecting plate 11 to rotate.
The unlocking pin 14 is a push type unlocking pin, the push type unlocking pin is movably arranged in a round hole of the movable handle 4, the shaft diameter of two ends of the unlocking pin 14 is large, the shaft diameter of the middle shaft is small, one end of the unlocking pin is provided with a boss 17 and a spring 18, and the other end of the unlocking pin is provided with a clamp spring 19.
In the initial position, the arc-shaped groove 15 on the side part of the connecting plate 11 is matched with the position with the thick shaft diameter of the unlocking pin 14, and the movable handle 4 is rotated to drive the connecting plate 11 to rotate.
When the unlocking pin 14 is pressed down, the protruding part 16 on the side part of the connecting plate 11 is matched with the position with the small shaft diameter of the unlocking pin 14, and when the movable handle 4 is rotated, the connecting plate 11 is not rotated.
Torsion springs 20 are arranged at two ends of the rotary pin 13, and two ends of each torsion spring 20 are respectively contacted with the movable handle 4 and the connecting plate 11, so that the movable handle 4 and the connecting plate 11 keep a certain initial angle.
Working principle:
when a workpiece is clamped, the position with the thick shaft diameter of the unlocking pin 14 is clamped in an arc-shaped groove 15 at the side part of the connecting plate 11, the unlocking pin 14 limits the arc-shaped groove 15 and the protruding part 16, at the moment, the movable handle 4 can drive the connecting plate 11 to rotate simultaneously, the tail part of the support plate 6 is clamped into the fixed handle 3 and props against the head part of the adjusting bolt 7, when the tail part of the support plate 6, the rivet C10 and the rivet B9 are positioned in the same straight line, the front end of the support plate 6 is just clamped at the minimum diameter point of the cam 12 to generate locking, and at the moment, the locking pliers can be locked; when the unlocking pin 14 is pressed down, the position with the thick shaft diameter of the unlocking pin 14 can slide out of the arc-shaped groove 15, and the middle diameter of the unlocking pin 14 is smaller, so that the limit on the protruding part 16 is lost, at the moment, the connecting plate 11 does not rotate when the movable handle 4 rotates, the movable handle 4 drives the cam 12 to rotate through the rotating pin 13, the supporting plate 6 is jacked up by the maximum diameter point of the cam 12, the tail part of the supporting plate 6, the rivet C10 and the rivet B9 are not in the same straight line any more, and unlocking is realized under the reset action of the tension spring 5.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (9)
1. The utility model provides a quick laborsaving opening method of locking pliers, includes fixed jaw, movable jaw, fixed handle, movable handle, extension spring, extension board and adjusting bolt, and fixed jaw has been welded to fixed handle front end, and adjusting bolt passes through threaded connection at fixed handle afterbody, its characterized in that: the movable jaw is riveted with the fixed handle and the connecting plate through a rivet A and a rivet B respectively and rotates freely, the other end of the connecting plate is riveted with the supporting plate through a rivet C and rotates freely, the movable handle is connected with the connecting plate through a rotating pin, a cam matched with the supporting plate is arranged in the middle of the rotating pin, and a unlocking pin is arranged between the movable handle and the connecting plate;
when a workpiece is clamped, the unlocking pin is matched with the connecting plate to lock the connecting plate, the connecting plate is driven to rotate when the movable handle is rotated, the tail part of the support plate is clamped into the fixed handle and props against the head part of the adjusting bolt, and when the tail part of the support plate, the rivet C and the rivet B are positioned in the same straight line, the front end of the support plate is clamped at the minimum diameter point of the cam to generate locking, and the locking pliers are locked at the moment;
when the unlocking pin is pressed down, the unlocking pin loses the limit on the connecting plate, the connecting plate does not rotate when the movable handle rotates, the movable handle drives the cam to rotate through the rotating pin, the maximum diameter point of the cam jacks up the support plate, the tail part of the support plate, the rivet C and the rivet B are not in the same straight line any more, and unlocking is realized under the reset action of the tension spring.
2. The quick and labor-saving opening method of the locking pliers according to claim 1, wherein the method comprises the following steps: the connecting plate is internally provided with a groove cavity for accommodating the supporting plate, a cam matched with the supporting plate is arranged in the groove cavity, the connecting plate is arranged in the groove cavity of the movable handle, and the movable handle, the connecting plate and the cam are connected through a rotating pin.
3. The quick and labor-saving opening method of the locking pliers according to claim 1, wherein the method comprises the following steps: the movable handle is internally penetrated with an unlocking pin, and the side part of the connecting plate is provided with an arc-shaped groove and a protruding part which are matched with the unlocking pin.
4. The quick and labor-saving opening method of the locking pliers according to claim 1, wherein the method comprises the following steps: the rotary pin is a special-shaped pin, a hole with the same shape as the rotary pin is formed in the middle of the cam, a hole with the same shape as the rotary pin is formed in the movable handle, and the cam is driven to rotate through the rotary pin when the movable handle is rotated.
5. The quick and labor-saving opening method of the locking pliers according to claim 4, wherein the method comprises the following steps: the hole corresponding to the rotary pin on the connecting plate is a round hole, the aperture of the round hole is consistent with the circumscribing circle of the rotary pin, and the rotary pin can not drive the connecting plate to rotate.
6. The quick and labor-saving opening method of the locking pliers according to claim 2, wherein the method comprises the following steps: the unlocking pin is a push type unlocking pin, the unlocking pin is movably installed in a round hole of the movable handle, the shaft diameter of two ends of the unlocking pin is thick, the shaft diameter of the middle shaft is thin, one end of the unlocking pin is provided with a boss and a spring, and the other end of the unlocking pin is provided with a clamp spring.
7. The quick and labor-saving opening method of the locking pliers according to claim 6, wherein the method comprises the following steps: when in an initial position, the arc-shaped groove at the side part of the connecting plate is matched with the position with the thick diameter of the unlocking pin, and the movable handle is rotated to drive the connecting plate to rotate.
8. The quick and labor-saving opening method of the locking pliers according to claim 6, wherein the method comprises the following steps: the convex part at the side of the connecting plate is matched with the small diameter position of the unlocking pin when the unlocking pin is pressed, and the connecting plate does not rotate when the movable handle is rotated.
9. The quick and labor-saving opening method of the locking pliers according to claim 1, wherein the method comprises the following steps: torsion springs are arranged at two ends of the rotary pin, and two ends of each torsion spring are respectively contacted with the movable handle and the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310782689.7A CN116619260A (en) | 2023-06-29 | 2023-06-29 | Quick labor-saving opening method of locking pliers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310782689.7A CN116619260A (en) | 2023-06-29 | 2023-06-29 | Quick labor-saving opening method of locking pliers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116619260A true CN116619260A (en) | 2023-08-22 |
Family
ID=87638301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310782689.7A Pending CN116619260A (en) | 2023-06-29 | 2023-06-29 | Quick labor-saving opening method of locking pliers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116619260A (en) |
-
2023
- 2023-06-29 CN CN202310782689.7A patent/CN116619260A/en active Pending
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