Labor-saving pliers convenient to unlock

Abstract

The labor-saving pliers convenient to unlock comprise a first plier body and a second plier body which are connected through a hinged shaft, a ratchet piece is arranged on the first plier body, a retaining pawl piece is arranged on the second plier body, and the ratchet piece and the retaining pawl piece are meshed with each other. The first clamp body and the second clamp body are close to each other to drive the ratchet piece and the retaining pawl piece to move relatively and be meshed so as to position the first clamp body and the second clamp body, a limiting locking block is arranged on the second clamp body, a limiting part and a driving part are arranged on the retaining pawl piece, and the driving part is used for driving the limiting locking block to move when the retaining pawl piece is away from the ratchet piece. And the limiting locking block is clamped in the limiting part. The labor-saving pliers not only have a labor-saving effect, but also can be conveniently unlocked and unlocked, so that the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pliers, in particular to a pair of labor-saving pliers that can be easily unlocked. Background Art

[0002] Application No. 2024204411543 (the same applicant as the present case) discloses a labor-saving pliers, which is provided with a ratchet piece on the first pliers body and a back-stop pawl piece on the second pliers body, and the ratchet piece and the back-stop pawl piece are arranged to mesh with each other. In actual use, the first pliers body and the second pliers body are gripped so that the first pliers body and the second pliers body are close to each other. When the first pliers body and the second pliers body are close to each other, the ratchet piece and the back-stop pawl piece will also move relative to each other, and at the same time, the ratchet piece and the back-stop pawl piece will also mesh. At this time, even if the first pliers body and the second pliers body are released, the first pliers body and the second pliers body will continue to maintain their position, so that the clamped material will not be loosened, and the user can loosen his hands, relieving the fatigue of his hands during clamping, thereby achieving the purpose of labor saving. Compared with ordinary pliers, it has a significant labor-saving effect. At the same time, by providing an unlocking piece, the unlocking piece can be toggled to drive the anti-retraction pawl piece away from the ratchet piece, so that the anti-retraction pawl piece is disengaged from the ratchet piece to release the positioning of the first pliers body and the second pliers body. By providing a limiting locking block on the second pliers body and a corresponding limiting portion on the anti-retraction pawl piece, the limiting locking block can be engaged in the limiting portion, or disengaged from the engagement with the limiting portion. When the limiting locking block is not engaged with the limiting portion, the anti-retraction pawl piece remains close to the ratchet piece, and the pliers have a labor-saving effect. When the limiting locking block is engaged with the limiting portion, the anti-retraction pawl piece does not contact the ratchet piece. At this time, the pliers are used as ordinary pliers and do not have a labor-saving effect, thereby adapting to different usage requirements.

[0003] However, in actual use, if the anti-retraction pawl is to be disengaged from the ratchet member, it is necessary to first operate the limit lock block to release the engagement between the limit lock block and the limit portion, and then toggle the unlocking member, which is inconvenient in use. Utility Model Content

[0004] The purpose of this utility model is to provide a solution to the current problem.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pair of labor-saving pliers with easy unlocking includes a first pliers body and a second pliers body connected by a hinge shaft, a ratchet piece is provided on the first pliers body, and a back-stop pawl piece is provided on the second pliers body, the ratchet piece and the back-stop pawl piece are meshed with each other, and the first pliers body and the second pliers body are close to each other to drive the ratchet piece and the back-stop pawl piece to move relative to and mesh with each other to position the first pliers body and the second pliers body, a limiting lock block is provided on the second pliers body, and a limiting part and a driving part are provided on the back-stop pawl piece, and the driving part is used to drive the limiting lock block to move when the back-stop pawl piece is away from the ratchet piece, so that the limiting lock block is clamped in the limiting part.

[0007] Furthermore, the limit lock block is hinged to the second clamp body through a first hinge shaft, wherein a limit claw is provided on the limit lock block at one end close to the first hinge shaft, the limit claw is used to cooperate with the limit part, and a reset block is provided on the limit lock block at one end away from the first hinge shaft.

[0008] Furthermore, the limiting portion and the driving portion are both arranged on the edge of the anti-retraction pawl member, wherein the limiting portion is recessed inwardly along the edge of the anti-retraction pawl member, and the driving portion is extended outwardly along the edge of the anti-retraction pawl member.

[0009] Furthermore, an arcuate portion is provided on the limiting locking block at a side corresponding to the driving portion, and the arcuate portion is used to avoid the driving portion when the ratchet member and the retaining pawl member are engaged.

[0010] Furthermore, an unlocking member is provided on the anti-retraction pawl member, and the anti-retraction pawl member is driven away from the ratchet member by toggling the unlocking member.

[0011] Furthermore, the anti-retraction pawl is hinged to the second caliper body via a second hinge shaft, and an elastic member is provided on the second caliper body. The anti-retraction pawl is close to the ratchet member via the elastic member so that the anti-retraction pawl engages with the ratchet member.

[0012] Furthermore, the elastic member includes a torsion spring, and the end of the anti-backward pawl member is arranged on the second caliper body through the torsion spring.

[0013] Beneficial effects of the utility model:

[0014] The conveniently unlocked, labor-saving pliers of this utility model utilize a clever combination of a locking block, a limiting portion of a retaining pawl, and a driving portion. When the clamping state of the labor-saving pliers needs to be released, the unlocking member is simply toggled, driving the retaining pawl away from the ratchet member. As the retaining pawl member moves, the driving portion pushes the locking block to move, causing it to engage with the limiting portion, thereby automatically retaining the retaining pawl member in the position without the need to toggle the locking block. At this point, the retaining pawl member can completely disengage from the ratchet member, releasing the positioning of the first and second pliers bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the utility model showing the conveniently unlocked labor-saving pliers in a locked state;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure at A in the middle;

[0017] Figure 3 This is a schematic structural diagram of the unlocked state of the labor-saving pliers with convenient unlocking according to the utility model;

[0018] Figure 4 yes Figure 3 Schematic diagram of the structure at point B.

[0019] The names corresponding to the marks in the figure are:

[0020] 1. Hinge shaft, 2. First clamp body, 3. Second clamp body, 4. Ratchet member, 5. Retraction pawl member, 6. Limit lock block, 7. Limit part, 8. Driving part, 9. First hinge shaft, 10. Limit claw, 11. Reset block, 12. Arc-shaped part, 13. Unlocking member, 14. Second hinge shaft, 15. Elastic member. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] A labor-saving pliers with convenient unlocking, such as Figures 1 to 4 As shown, the clamp comprises a first jaw body 2 and a second jaw body 3 connected by a hinge shaft 1. A ratchet member 4 is provided on the first jaw body 2, and a retaining pawl member 5 is provided on the second jaw body 3. The ratchet member 4 and the retaining pawl member 5 are arranged to engage with each other. When the first jaw body 2 and the second jaw body 3 approach each other, the ratchet member 4 and the retaining pawl member 5 are driven to move relative to each other and engage, thereby positioning the first jaw body 2 and the second jaw body 3. This prevents the clamped material from loosening, allowing the user to release their hand, relieving hand fatigue during clamping, and thus achieving the purpose of saving effort.

[0023] A limit lock block 6 is provided on the second caliper body 3, and a limit portion 7 and a driving portion 8 are provided on the anti-retraction pawl member 5. The driving portion 8 is used to drive the limit lock block 6 to move in a linked manner when the anti-retraction pawl member 5 is away from the ratchet member 4, so that the limit lock block 6 is engaged in the limit portion 7. Specifically, the limit lock block 6 is hinged to the second caliper body 3 via a first hinge shaft 9, wherein a limit claw 10 is provided on the limit lock block 6 at one end close to the first hinge shaft 9, and the limit claw 10 is used to cooperate with the limit portion 7; a reset block 11 is provided on the limit lock block 6 at one end away from the first hinge shaft 9, which is used to manually reset the limit lock block 6.

[0024] like Figure 2 and Figure 4 As shown, both the limiting portion 7 and the driving portion 8 are disposed on the edge of the retaining pawl 5. The limiting portion 7 is recessed inwardly along the edge of the retaining pawl 5, while the driving portion 8 extends outwardly along the edge of the retaining pawl 5. This design allows the driving portion 8 to naturally push the limiting lock block 6 to move when the retaining pawl 5 moves, achieving engagement between the limiting lock block 6 and the limiting portion 7.

[0025] In addition, an arc portion 12 is provided on the side of the limit lock block 6 corresponding to the driving part 8. The arc portion 12 is used to avoid the driving part 8 when the ratchet part 4 and the stop pawl part 5 are engaged, ensuring that the driving part 8 can smoothly push the limit lock block 6 to move.

[0026] In order to facilitate unlocking, an unlocking member 13 is provided on the anti-retraction pawl member 5. By toggling the unlocking member 13, the anti-retraction pawl member 5 can be driven away from the ratchet member 4, thereby releasing the positioning of the first caliper body 2 and the second caliper body 3.

[0027] To maintain stable engagement between the retaining pawl 5 and the ratchet 4, the retaining pawl 5 is hinged to the second caliper body 3 via a second hinge shaft 14. An elastic member 15 is provided on the second caliper body 3. This elastic member 15 draws the retaining pawl 5 closer to the ratchet 4, allowing the retaining pawl 5 to engage with the ratchet 4. Specifically, the elastic member 15 comprises a torsion spring, the end of which is attached to the second caliper body 3 via the torsion spring. This ensures that the retaining pawl 5 remains engaged with the ratchet 4 unless subjected to external forces.

[0028] Working principle:

[0029] When the force-saving pliers are used to clamp materials, the first and second pliers bodies 2, 3 are held close to each other. At this time, the ratchet 4 and the stop pawl 5 move relative to each other and engage, positioning the first and second pliers bodies 2, 3 so that the clamped materials will not loosen.

[0030] When the force-saving pliers need to be released from the clamping state, it is only necessary to toggle the unlocking member 13, driving the anti-retraction pawl member 5 away from the ratchet member 4. During the movement of the anti-retraction pawl member 5, the driving unit 8 pushes the limit lock block 6 to move, causing the claw 10 of the limit lock block 6 to engage with the limiting portion 7, thereby allowing the limit lock block 6 to automatically limit the anti-retraction pawl member 5 without toggling the limit lock block 6. At this time, the anti-retraction pawl member 5 can be completely disengaged from the ratchet member 4, releasing the positioning of the first pliers body 2 and the second pliers body 3.

[0031] When the labor-saving function needs to be used again, it is only necessary to manually reset the limit lock block 6 by resetting the shift block 11, so that the claw 10 of the limit lock block 6 is disengaged from the limit part 7. At this time, under the action of the elastic member 15, the stop pawl member 5 will automatically approach the ratchet member 4 and engage, thereby restoring the labor-saving function of the labor-saving pliers.

[0032] Through the above design, the labor-saving pliers of the present invention not only have a labor-saving effect, but also can be unlocked and opened conveniently, thereby improving the convenience of use.

[0033] Obviously, the embodiments described are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention.

Claims

1. A labor-saving pliers with convenient unlocking, characterized by: The invention comprises a first pliers body and a second pliers body connected by a hinge shaft, a ratchet piece is provided on the first pliers body, and a stop pawl piece is provided on the second pliers body, the ratchet piece and the stop pawl piece are meshed with each other, and the first pliers body and the second pliers body are close to each other to drive the ratchet piece and the stop pawl piece to move relative to and mesh with each other to position the first pliers body and the second pliers body, a limiting lock block is provided on the second pliers body, and a limiting part and a driving part are provided on the stop pawl piece, and the driving part is used to drive the limiting lock block to move when the stop pawl piece is away from the ratchet piece, so that the limiting lock block is clamped in the limiting part.

2. The labor-saving pliers with convenient unlocking according to claim 1, characterized in that: The limit lock block is hinged to the second clamp body through a first hinge shaft, wherein a limit claw is provided on the limit lock block at one end close to the first hinge shaft, and the limit claw is used to cooperate with the limit part, and a reset block is provided on the limit lock block at one end away from the first hinge shaft.

3. The labor-saving pliers with convenient unlocking according to claim 2, characterized in that: The limiting portion and the driving portion are both arranged on the edge of the anti-retraction pawl member, wherein the limiting portion is recessed inwardly along the edge of the anti-retraction pawl member, and the driving portion is extended outwardly along the edge of the anti-retraction pawl member.

4. The labor-saving pliers with convenient unlocking according to claim 3, characterized in that: An arcuate portion is provided on the limiting locking block at one side corresponding to the driving portion, and the arcuate portion is used to avoid the driving portion when the ratchet member and the retaining pawl member are engaged.

5. The labor-saving pliers with convenient unlocking according to claim 4, characterized in that: The anti-retraction pawl member is provided with an unlocking member, and the anti-retraction pawl member is driven away from the ratchet member by toggling the unlocking member.

6. The labor-saving pliers with convenient unlocking according to any one of claims 1 to 5, characterized in that: The anti-retraction pawl is hinged on the second caliper body through a second hinge shaft. The second caliper body is provided with an elastic member. The anti-retraction pawl is close to the ratchet member through the elastic member so that the anti-retraction pawl is engaged with the ratchet member.

7. The labor-saving pliers with convenient unlocking according to claim 6, characterized in that: The elastic member includes a torsion spring, and the end of the anti-backward pawl member is arranged on the second caliper body through the torsion spring.

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