CN219946015U - Labor-saving pliers - Google Patents

Abstract

The utility model discloses a labor-saving clamp which comprises a first handle and a second handle. The first handle includes first portion and second portion, and the distal end of second portion is used for holding, and the proximal end of second portion includes connecting portion and supporting part, and the second portion articulates in first portion through connecting portion, and the supporting part is supported by the second handle. The proximal end of the second portion of the handle includes a connection portion and a support portion, the second portion being hinged to the first portion by the connection portion, the support portion being supported by the second handle. A labor-saving lever is formed between the second part and the second handle, so that labor can be saved in the working process of the labor-saving pliers.

Description

Labor-saving pliers

Technical Field

The utility model belongs to the technical field of hardware clamping or shearing tools, and particularly relates to a labor-saving pliers/shearing tool.

Background

The manual pliers and the scissors are common hardware tools. Pliers are generally composed of three parts, namely a pliers head, a pin and a pliers handle. The basic principle of the pliers is that two levers are utilized, and at one point in the middle part, the two levers are connected together in a cross manner by a pin, so that the two ends can move relatively, and the object can be clamped at the other end only by operating the tail end by hands. In order to reduce the force applied by the user during operation, the clamp handle is generally longer than the clamp head according to the mechanical lever principle, so that a stronger clamping force can be obtained with smaller force, and the use requirement is met. The longer the grip, the better the effort-saving effect, but this results in an overall size of the pliers that is larger.

Disclosure of Invention

Embodiments of the present utility model provide a labor-saving pliers that can reduce the force required to be applied to a handle.

In a first aspect, a labor-saving pliers is provided that includes a first handle and a second handle. The first handle includes first portion and second portion, and the distal end of second portion is used for holding, and the proximal end of second portion includes connecting portion and supporting part, and the second portion articulates in first portion through connecting portion, and the supporting part is supported by the second handle.

In a first possible implementation, the length of the second portion is greater than the length of the first portion.

In combination with the above possible implementation manner, in a second possible implementation manner, the supporting portion is located at a distal end of the proximal end of the second portion, and the connecting portion is located between two distal ends of the second portion.

In combination with the above possible implementation manner, in a third possible implementation manner, a movable supporting structure is formed between the supporting portion and the second handle.

In combination with the above possible implementation manner, in a fourth possible implementation manner, the movable supporting structure is a cooperation of the slot and the pin.

In combination with the foregoing possible implementation manner, in a fifth possible implementation manner, the groove is an arc-shaped groove.

In combination with the foregoing possible implementation manner, in a sixth possible implementation manner, the supporting portion is a groove.

In combination with the foregoing possible implementation manner, in a seventh possible implementation manner, the groove has a first end and a second end, and the first end is close to the connection portion, and the second end is far from the connection portion.

In combination with the foregoing possible implementation manner, in an eighth possible implementation manner, the labor-saving pliers further includes a miter connected to the second handle, and the pin is located at the miter, and a predetermined angle is provided between the miter and the second handle.

In combination with the foregoing possible implementation manner, in a ninth possible implementation manner, a distance between the first end of the groove and the connection portion is a first distance, a distance between the connection portion and the second end is a second distance, and the first distance is one-twelfth to one-eighth of the second distance.

The labor-saving pliers provided by the utility model have the advantages that the proximal end of the second part of the handle comprises the connecting part and the supporting part, the second part is hinged to the first part through the connecting part, and the supporting part is supported by the second handle. A labor-saving lever is formed between the second part and the second handle, so that labor can be saved in the working process of the labor-saving pliers.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic view of a power saving pliers in a closed state.

Fig. 2 is a schematic view of the power saving pliers in an open state.

Fig. 3 is an enlarged partial schematic view of the mouth portion of fig. 2.

Fig. 4 is a schematic view of the structure shown in fig. 3 at another viewing angle.

Reference numerals illustrate:

a first handle 100, a first portion 110, a second portion 120; distal end 121, proximal end 122, connecting portion 123, support portion 124, first end 125, second end 126;

second handle 200, pin 210;

jaw 300, jaw 400, miter 800, miter 700, king pin 900;

a first distance a and a second distance b.

Detailed Description

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.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model. The present utility model is in no way limited to any particular construction and arrangement set forth below, but rather covers any modification, substitution, or improvement in parts, components, and connection without departing from the spirit of the utility model.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The labor-saving pliers comprise a first handle and a second handle, wherein the first handle comprises a first part and a second part, the distal end of the second part is used for being held, the proximal end of the second part comprises a connecting part and a supporting part, the second part is hinged to the first part through the connecting part, and the supporting part is supported by the second handle. A labor-saving lever is formed between the second part and the second handle, and drives the first part to move, such as driving the clamp head connected with the first part to perform shearing operation.

Reference is made to fig. 1 to 4. Fig. 1 is a schematic view of a power saving pliers in a closed state. Fig. 2 is a schematic view of the power saving pliers in an open state. Fig. 3 is an enlarged partial schematic view of the mouth portion of fig. 2. Fig. 4 is a schematic view of the structure shown in fig. 3 at another viewing angle.

The labor-saving pliers comprise pliers handles and pliers mouths. The forceps handle includes a first handle 100 and a second handle 200. The jaw consists of jaw 300 and jaw 400. The second handle 200 and jaw 400 are generally parallel and are connected by a miter 800, which generally forms a "cross-fold" configuration. First handle 100 includes a first portion 110 and a second portion 120. The first portion 110, jaw 300 and miter 700 also form a "cross-fold" configuration. The length of the first portion 110 is smaller, in this embodiment smaller than the length of the jaw 300. The second portion 120 is longer than the first portion 110. The two 'cross-fold' structures are hinged by a main pin 900.

The second portion 120 of the handle has one end for connection to the first portion 110, the end being a proximal end 122; the other end is distal end 121. The proximal end 122 of the second portion 120 is provided with a connecting portion 123 and a supporting portion 124. The connecting portion 123 is a pin hole located one sixth of the first portion 110 from the end of the proximal end 122. The support portion 124 is an arcuate slot between the connecting portion 123 and the end of the proximal end 122. The first end 125 of the arcuate slot is adjacent the connecting portion 123 and the second end 126 is adjacent the end of the proximal end 122 (distal from the connecting portion 123). The second portion 120 and the first portion 110 are hinged together by pins and pin holes. During the opening process of the first handle 100, the whole will rotate around the main pin shaft 900, and the second part 120 will also rotate around the connecting part 123, so that the opening angle of the first handle 100 is finally larger.

A pin 210 is provided at the miter 800 of the second handle 200. The diameter of the pin 210 corresponds to the width of the support 124. When the second handle 200 is rotated relative to the first handle 100, the circumferential surface of the pin 210 abuts and slides against the side wall of the groove, and the pin 210 can support the second portion 120.

Proximal end 122 is specifically configured to include two parallel plates. The spacing of the two plates is equal to the thickness of the first portion 110. The first portion 110 is clamped between the plates at the proximal end 122 and is held in place by a pin. The two plates also clamp the miter 800 of the second handle 200 in between.

In the clamping/shearing process, when the clamp mouth does not work, the stroke of the clamp handle doing work (such as the shearing process) is larger, and the required force is smaller. For the first portion 110, the second portion 120 is the portion that actively applies force, and a labor-saving lever structure is formed between the second portion 120 and the second handle 200. The pin 210 and the support portion 124 are supported (the support position is variable), the distal end 121 is a portion to which power is applied, and the connection portion 123 is a portion to which resistance is received. In this embodiment, when the first handle 100 is closed to the limit position, the first end 125 of the supporting portion 124 is supported by the pin 210, and the second distance b (resistance arm) is at a minimum, so that the effort saving effect is at a maximum. In the position shown in fig. 2, the fulcrum is located at the extreme end of the supporting portion 124, where the resistance arm is greater than the aforementioned second distance b. In other embodiments, the magnitude relationship of the second distance b and the first distance a may also be set to any value between one tenth and one eighth of the first distance a.

In alternative embodiments, the movable support structure formed by pin 210 and support 124 may have other variations, such as slots provided in miter 800 of second handle 200 and pins provided in second portion 120; or other structure capable of forming a support for the proximal end 122 of the second portion 120 in the radial direction of the kingpin axis 900. The structure matched with the supporting part 124 is arranged at the miter joint part 800, so that the resistance arm can be reduced, and the whole structure can be more compact. The location where the first portion 110 is connected to the second portion 120 and the location where the connection 123 is supported by the second handle 200 are not limited to the illustrated location, and may be adjusted according to the structure and size of a specific product.

In the embodiment in which the supporting portion 124 is a slot, the shape and the trend of the slot are not limited to those shown in the drawings, and the shape of the slot may be a straight slot; which may be coaxial or at an angle to the body of the second portion 120.

In other alternative embodiments, the labor-saving pliers are scissors, i.e. the pliers mouth in the previous embodiment is replaced by the blade of the scissors.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (7)

1. A pair of labor-saving pliers comprising a first handle and a second handle, wherein the first handle comprises a first part and a second part, the distal end of the second part is used for holding, the proximal end of the second part comprises a connecting part and a supporting part, the second part is hinged to the first part through the connecting part, and the supporting part is supported by the second handle; the length of the second portion is greater than the length of the first portion; a movable supporting structure is formed between the supporting part and the second handle; the movable support structure is a slot and pin fit.

2. The labor saving pliers according to claim 1, wherein the support is located at the end of the proximal end of the second section, and the connection is located between the two ends of the second section.

3. The labor saving pliers according to claim 1, wherein the slot is an arc-shaped slot.

4. The labor saving pliers according to claim 1, wherein the support is a slot.

5. The labor saving pliers of claim 4 wherein the slot has a first end and a second end, the first end being proximal to the connecting portion and the second end being distal to the connecting portion.

6. The power saving pliers of claim 5 further comprising a miter connected to the second handle, the pin being located at the miter, the miter having a predetermined angle with the second handle.

7. The labor saving pliers according to claim 6, wherein the first end of the slot is a first distance from the connecting portion and the connecting portion is a second distance from the second end, and the first distance is one-tenth to one-eighth of the second distance.