Automatic spring-back pliers with permanent magnet

Abstract

The application provides a permanent magnet automatic rebounding pincers, relates to the technical field of hardware tools, and aims to solve the technical problem that the distance between magnets will lose rebounding force once being pulled apart, and the rebounding function cannot be realized if the pincers are not completely closed in use in the prior art. The device comprises a first main body, a second main body and a rotating shaft structure, the first main body is connected with the second main body through the rotating shaft structure; a permanent magnet assembly is arranged in the rotating shaft structure, the application has better stability and a longer service life, and can realize automatic rebounding in a smaller degree of closure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware tools, in particular to a permanent magnet automatic rebounding pliers. BACKGROUND

[0002] In the hardware tool industry, pliers are essential tools. Ordinary pliers usually have two elongated parts, each of which has a handle at one end and a jaw at the other end. The parts cross each other and are connected by a pivot pin or similar device in a similar way to scissors at a single intermediate pivot.

[0003] Most pliers on the market do not have an automatic rebounding function. During use, the palm inward gripping force is usually large, but the outward tension is small. When the pliers pivot is relatively tight, it is necessary to use both hands to pull apart the pliers handle to continue using.

[0004] At the present stage, the pliers with automatic rebounding function all use springs as rebounding power. However, after a long time of use, the springs will appear fatigue and lose part of the rebounding force, reducing the use effect.

[0005] To solve the above problems, the Chinese invention patent with the application number CN201810735583.0 and the invention name of "Permanent magnet automatic rebounding scissors" uses two magnets (serial numbers 7 and 8) placed between the handles. When closed, it is popped open through the principle of repulsion between like magnetic poles.

[0006] However, the present applicant found that it at least has the following technical problems:

[0007] Once the distance between the magnets is pulled apart, the rebounding force will be lost. In use, if there is not a complete closing condition, the rebounding function cannot be realized. SUMMARY

[0008] The purpose of the present application is to provide a permanent magnet automatic rebounding pliers to solve the technical problems in the prior art that the distance between the magnets will lose the rebounding force once pulled apart, and the rebounding function cannot be realized in use if there is not a complete closing condition. 。 The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0009] To achieve the above purpose, the present application provides the following technical solutions:

[0010] The present application provides a permanent magnet automatic rebounding pliers, which comprises a first main body, a second main body and a pivot structure, wherein:

[0011] The first main body and the second main body are connected through the pivot structure;

[0012] The rotation shaft structure is provided with a permanent magnet assembly.

[0013] Preferably, the first body comprises a first handle and a first jaw, and the second body comprises a second handle and a second jaw, wherein:

[0014] The first handle is fixedly connected with the first jaw or integrally formed with the first jaw.

[0015] The second handle is fixedly connected with the second jaw or integrally formed with the second jaw.

[0016] The rotation shaft structure is arranged at the connection between the first handle and the first jaw, and the connection between the second handle and the second jaw.

[0017] Preferably, the permanent magnet assembly comprises a first permanent magnet group and a second permanent magnet group, wherein:

[0018] The second permanent magnet group is arranged at the outer periphery of the first permanent magnet group.

[0019] Preferably, a gap is arranged between the first permanent magnet group and the second permanent magnet group.

[0020] Preferably, the first permanent magnet group and the second permanent magnet group are both arranged in a circular ring shape.

[0021] Preferably, the first permanent magnet group and the second permanent magnet group are both arranged in a Halbach arrangement.

[0022] Preferably, the first permanent magnet group and the second permanent magnet group are both arranged in an N / S phase arrangement.

[0023] Preferably, the first handle and the second handle are respectively provided with a blade.

[0024] The first handle and the second handle are respectively provided with a blade.

[0025] The application provides a permanent magnet automatic rebounding pliers ， By arranging the permanent magnet in the rotation shaft structure, when the plier jaws are closed, the permanent magnet assembly arranged in the rotation shaft structure follows the rotation to increase the contact area of the magnets with the same polarity to provide continuous rebounding force, which is not affected by whether the closure angle is completely closed or half closed, and can always provide rebounding force. Moreover, the permanent magnet will not fatigue and decay due to a large number of uses or a long use time, so that the service life of the overall structure is longer. At the same time, by arranging the permanent magnet assembly in the rotation shaft structure, the appearance of the traditional pliers is basically not changed, which is more suitable for use habits. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art based on these drawings without creative effort should fall within the scope of the present application.

[0027] Figure 1 is a structural schematic diagram of the first embodiment of the permanent magnet automatic rebounding forceps in the present application;

[0028] Figure 2 is Figure 1 a structural schematic diagram when the forceps are opened;

[0029] Figure 3 is Figure 1 an enlarged structural schematic diagram of the transfer shaft structure;

[0030] Figure 4 is Figure 2 an enlarged structural schematic diagram of the transfer shaft structure;

[0031] Figure 5 is a structural schematic diagram of the second embodiment of the permanent magnet automatic rebounding forceps in the present application;

[0032] Figure 6 is Figure 5 an enlarged structural schematic diagram of the transfer shaft structure.

[0033] In the figure: 1, first main body; 10, first forceps head; 11, first handle; 2, second main body; 20, second forceps head; 21, second handle; 3, transfer shaft structure; 31, first permanent magnet group; 32, second permanent magnet group; 33, gap. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0035] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] Embodiment one

[0038] The present application provides a kind of permanent magnet automatic rebound forceps, Figure 1 It is the structural schematic diagram of the embodiment, as Figure 1 Shown, including first body 1, second body 2 and pivot structure 3. Wherein, first body 1 and second body 2 are connected by pivot structure 3;Pivot structure 3 is provided with permanent magnet assembly.

[0039] By setting permanent magnet in pivot structure 3, when the jaw is closed, the permanent magnet assembly provided in pivot structure 3 is followed by rotation to increase the contact area of the same polarity magnet to provide continuous rebound force, which is not affected by whether the closing angle is completely closed or half closed, and can always provide rebound force, and the permanent magnet will not fatigue attenuation due to use frequency or use time is longer, so that the service life of the overall structure is longer. At the same time, by setting the permanent magnet assembly in the pivot structure 3, the appearance of the traditional forceps is basically not changed, which is more suitable for use habit.

[0040] As an optional embodiment, the first body 1 includes a first handle 11 and a first jaw 10, and the second body 2 includes a second handle 21 and a second jaw 20.

[0041] Wherein, the first handle 11 is fixedly connected or integrally formed with the first jaw 10;The second handle 21 is fixedly connected or integrally formed with the second jaw 20, so that the stability of the connection is better.

[0042] The pivot structure 3 is arranged at the connection between the first handle 11 and the first jaw 10, and the second handle 21 and the second jaw 20.

[0043] As an optional implementation, the permanent magnet assembly includes a first permanent magnet group 31 and a second permanent magnet group 32.

[0044] In this embodiment, both the first permanent magnet group 31 and the second permanent magnet group 32 are configured as annular. The second permanent magnet group 32 is disposed on the outer periphery of the first permanent magnet group 31.

[0045] Both the first permanent magnet group 31 and the second permanent magnet group 32 are arranged in a Heilbeck configuration. By setting the magnet arrangement of the first permanent magnet group 31 and the second permanent magnet group 32 to a Heilbeck configuration, a larger magnetic force can be achieved with smaller magnets, which not only saves materials but also allows for installation in a smaller space on the pliers shaft.

[0046] Furthermore, by setting a circular Heilbeck permanent magnet assembly within the rotating shaft structure 3, automatic rebound can be achieved even with a smaller degree of closure, and the power source for automatic opening uses the Heilbeck permanent magnet assembly, resulting in better overall structure stability and a longer service life.

[0047] In this embodiment, two sets of Helbeck-arranged permanent magnet ring assemblies, the first permanent magnet group 31 and the second permanent magnet group 32, are set in the rotating shaft structure 3. Utilizing the principle of like poles repelling each other, the like pole permanent magnets come into contact when the jaws are closed. As the jaw closing angle decreases until it is fully closed, the contact area of ​​the like pole permanent magnets gradually increases to the maximum. Throughout the entire operation, the like pole repulsive permanent magnets provide a continuous outward rotation torque.

[0048] Figure 2 yes Figure 1 A schematic diagram of the structure when the jaws of the jaws are open, as shown below. Figure 2 As shown, when the second handle 21 rotates, it drives the first permanent magnet group 31, i.e., the Heilbeck permanent magnet assembly located in the inner ring, to rotate inward. The Heilbeck permanent magnet assembly located in the inner ring rotates clockwise. The mutual repulsion area of ​​the same polarity surfaces of the Heilbeck permanent magnet assembly located in the inner ring and the second permanent magnet group 32, i.e., the Heilbeck permanent magnet assembly located in the outer ring, gradually increases. At this time, a certain torque force in the counterclockwise direction will be generated, realizing the function of automatic pop-out.

[0049] Figure 3 yes Figure 1 An enlarged structural diagram of the central shaft structure, as shown below. Figure 3 As shown, when the jaws are fully closed, the same polarity repulsion area of ​​the first permanent magnet group 31 and the second permanent magnet group 32, i.e. the Heilbeck permanent magnet components located in the inner and outer rings, reaches its maximum, and the counterclockwise torque also reaches its maximum value.

[0050] Figure 4 yes Figure 2Enlarged structure diagram of the middle rotating shaft structure, as shown in Figure 4 When the jaws are fully opened, the first permanent magnet group 31 and the second permanent magnet group 32, i.e. the Halbach permanent magnet assemblies in the inner and outer rings, are in a state of attracting each other with different polarities.

[0051] This permanent magnet automatic rebounding forceps, by setting two groups of annular Halbach arranged permanent magnets in the rotating shaft structure 3, when the jaws are closed, the magnets in the rotating shaft structure 3 follow the rotation to increase the contact area of the magnets with the same polarity to provide continuous rebounding force, which is not affected by the closing angle of the jaws and can always achieve rebounding.

[0052] As an optional embodiment, a gap 33 is provided between the first permanent magnet group 31 and the second permanent magnet group 32.

[0053] By leaving a gap between the inner and outer Halbach permanent magnet assemblies, the permanent magnets can be prevented from being damaged due to friction during use.

[0054] As an optional embodiment, it also includes a blade, and the first jaw 10 and the second jaw 20 are respectively provided with blades to improve the sharpness of the forceps, so that the application range of the overall structure is more extensive.

[0055] The form of the blade can be set according to actual needs, such as sawtooth shape, knife tip structure, or other structure forms, so as to be better used for clamping, fixing, processing workpieces, or twisting, bending, and cutting metal wires.

[0056] Example Two

[0057] Figure 5 is a structure diagram of this embodiment, Figure 6 is Figure 5 Enlarged structure diagram of the middle rotating shaft structure, as shown in Figure 5 and Figure 6 As shown in the drawings, different from Example One, in this embodiment, the first permanent magnet group 31 and the second permanent magnet group 32 are arranged in an N / S alternating manner.

[0058] By arranging the permanent magnet assemblies in the rotating shaft structure 3 in an N / S alternating manner, when the jaws are opened, the first permanent magnet group 31 and the second permanent magnet group 32, i.e. the inner and outer permanent magnets, are in an attractive state. During the process of closing the jaws, the originally attracted magnets will provide a counterclockwise torque, and the other magnet in the rotation direction will also provide a counterclockwise torque due to the increase in the repulsion area of the same polarity, so that the automatic rebounding function can be achieved.

[0059] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A permanent magnet automatic spring-back forceps, characterized by: The utility model relates to a kind of magnetic force adjustable pliers, including first body, second body and pivot structure, wherein: The first body is connected with the second body by the pivot structure; Permanent magnet assembly is arranged in the pivot structure;The permanent magnet assembly includes first permanent magnet group and second permanent magnet group, wherein: the first permanent magnet group and the second permanent magnet group are both Halbach arrangement;The second permanent magnet group is arranged at the outer periphery of the first permanent magnet group.

2. The automatic permanent magnet spring pliers according to claim 1, characterized in that: The first body includes first handle and first jaw, and the second body includes second handle and second jaw, wherein: The first handle is fixedly connected with the first jaw or integrally formed and arranged; The second handle is fixedly connected with the second jaw or integrally formed and arranged; The pivot structure is arranged at the connection of the first handle and the first jaw, the second handle and the second jaw.

3. The automatic permanent magnet spring pliers according to claim 1, characterized in that: The first permanent magnet group and the second permanent magnet group are arranged with a gap therebetween.

4. The automatic permanent magnet spring pliers according to claim 1, characterized in that: The first permanent magnet group and the second permanent magnet group are both arranged in a circular ring shape.

5. The automatic permanent magnet spring pliers according to claim 2, characterized in that: It also includes pliers blade, wherein: The first jaw and the second jaw are respectively provided with pliers blade.

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