Pliers for electrician

Abstract

The utility model relates to a pair of pliers for electricians, which comprises a first pliers arm, a second pliers arm, a third pliers arm and a fourth pliers arm, the second clamp arm is provided with a mouth part and a handle part, the middle part of the second clamp arm is hinged with the middle part of the first clamp arm, and the mouth part of the second clamp arm is provided with a second occlusion part; a limiting piece; when the handle portion of the first clamp arm and the handle portion of the second clamp arm are kneaded or separated, the mouth portion of the first clamp arm and the mouth portion of the second clamp arm can be close to each other or separated from each other, the mouth portion of the first clamp arm and the mouth portion of the second clamp arm are close to each other to complete the shearing action, and the limiting piece limits the maximum occlusion stroke when the mouth portion of the first clamp arm and the mouth portion of the second clamp arm are occluded. According to the pliers for the electrician provided by the embodiment of the invention, the maximum occlusion stroke when the mouth part of the first pliers arm and the mouth part of the second pliers arm are occluded can be adjusted through the limiting piece, so that the shearing depth can be controlled when the first occlusion part and the second occlusion part perform shearing action, and damage to a wire core in a wire stripping process can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of auxiliary tools, in particular to a pincer for electricians. BACKGROUND

[0002] When electricians work, various power auxiliary tools are needed, for example, when performing cable wiring, the insulating sheath of the cable end needs to be removed, and the electrician usually uses a wire stripper. The electrician holds the wire stripper by pinching, cuts the insulating sheath of the cable outward, and then removes the insulating sheath of the cut part. In the process of using the traditional wire stripper to strip the cable, the electrician is prone to scratch the metal wire core of the cable when operating with the hand, thereby causing damage to the cable and posing a certain safety hazard. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a pincer for electricians, which can avoid damage to the wire core when stripping the sheath of the cable, thereby effectively solving the deficiencies in the prior art.

[0004] To this end, the present application provides a pincer for electricians, comprising:

[0005] A first pincer arm having a mouth portion and a handle portion, the mouth portion of the first pincer arm being provided with a first clamping portion;

[0006] A second pincer arm having a mouth portion and a handle portion, the middle portion of the second pincer arm being hingedly connected to the middle portion of the first pincer arm, and the mouth portion of the second pincer arm being provided with a second clamping portion;

[0007] A limiting member provided on the first pincer arm or the second pincer arm;

[0008] Wherein, pinching or separating the handle portions of the first pincer arm and the second pincer arm can make the mouth portions of the first pincer arm and the second pincer arm approach or separate, the mouth portions of the first pincer arm and the second pincer arm approach to make the first clamping portion and the second clamping portion complete a shearing action, and the limiting member limits the maximum clamping stroke when the mouth portions of the first pincer arm and the second pincer arm are clamped.

[0009] In some possible implementations, the limiting member is provided on the mouth portion of the first pincer arm.

[0010] In some possible implementations, the limiting member is adjustably provided on the mouth portion of the first pincer arm to adjust the maximum clamping stroke between the mouth portions of the first pincer arm and the second pincer arm when they are clamped.

[0011] In some possible implementations, the limiting member comprises a threaded rod, the threaded rod is screwed on the mouth portion of the first pincer arm, and one end of the threaded rod is lower than the mouth portion of the second pincer arm when the mouth portions of the first pincer arm and the second pincer arm are clamped.

[0012] In some possible implementation manners, the mouth portion of the first plier arm is provided with a connecting portion, the threaded rod is screwed in the connecting portion, and a gap is arranged between the side portion of the threaded rod and the mouth portion of the first plier arm.

[0013] In some possible implementation manners, the mouth portion of the second plier arm is provided with an abutting portion for abutting the threaded rod, and when the mouth portion of the first plier arm and the mouth portion of the second plier arm are in the occlusion state, the threaded rod abuts one side of the abutting portion, and the other side of the abutting portion is provided with a slotted polygonal section.

[0014] In some possible implementation manners, the first occlusion portion comprises a first segment and a second segment connected to each other, the second occlusion portion comprises a third segment and a fourth segment connected to each other, and when the mouth portion of the first plier arm and the mouth portion of the second plier arm are occluded, the first segment and the third segment are correspondingly occluded, and the second segment and the fourth segment are correspondingly occluded, an included angle between the first segment and the second segment is an obtuse angle, and an included angle between the third segment and the fourth segment is an obtuse angle.

[0015] In some possible implementation manners, the handle portion of the first plier arm is arranged in an arc shape.

[0016] In some possible implementation manners, the handle portion of the second plier arm comprises a first arc-shaped segment and a second arc-shaped segment connected to each other, the first arc-shaped segment and the second arc-shaped segment are both arranged in an arc shape, and a diameter of a virtual circle on which the first arc-shaped segment is located is different from a diameter of a virtual circle on which the second arc-shaped segment is located.

[0017] In some possible implementation manners, one end of the first arc-shaped segment is connected to the mouth portion of the second plier arm, the other end of the first arc-shaped segment is connected to the second arc-shaped segment, and the diameter of the virtual circle on which the first arc-shaped segment is located is greater than the diameter of the virtual circle on which the second arc-shaped segment is located.

[0018] The electrician's pliers provided in the embodiments of the present application are characterized in that the first plier arm and the second plier arm are hinged together, the handle portion of the first plier arm and the handle portion of the second plier arm are close to each other, so that the mouth portion of the first plier arm and the mouth portion of the second plier arm are occluded, and then the first occlusion portion and the second occlusion portion complete a shearing action, the maximum occlusion stroke of the mouth portion of the first plier arm and the mouth portion of the second plier arm when being occluded can be adjusted through the limiting member, and then the shearing depth can be controlled when the first occlusion portion and the second occlusion portion perform the shearing action, so that damage to the wire core in the wire stripping process can be effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structural schematic diagram of the electrician's pliers provided in the embodiments of the present application is shown in the figure;

[0020] Figure 2 The structural schematic diagram of the electrician's pliers provided in the embodiments of the present application is shown in the figure; Figure 1 The enlarged view of part A in the figure.

[0021] Figure 3 Another perspective structural schematic view of the electrician's pincers provided by the embodiment of the present application is shown in the figure;

[0022] Figure 4 For Figure 3 The local enlarged view at B in the middle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme of the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiment in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0024] As Figures 1-4 shown, the electrician's pincers provided by the embodiment of the present application is applied to the work of electricians, and serves as an auxiliary tool. When electricians work, they will use various power auxiliary tools. For example, when wiring a cable, the insulating sheath of the cable is removed first, and then the wiring is performed. Electricians usually use wire stripping pliers to remove the insulating sheath of the cable. The insulating sheath of the cable is damaged by shearing the cable with the wire stripping pliers, and then the sheath is removed. However, in the actual operation process, due to the accuracy problem of the force grasped by the electrician, the metal wire core is sometimes cut and damaged, causing the change of the cross-sectional area of the wire core, and thus there is a certain electrical safety hazard. The electrician's pincers provided by the present application aims to avoid the damage of the metal wire core in the process of removing the sheath and prevent the occurrence of electrical safety hazard.

[0025] The electrician's pincers comprise a first pincer arm 100, a second pincer arm 200 and a limiting piece, the first pincer arm 100 and the second pincer arm 200 are hinged together, the first pincer arm 100 has a mouth part and a handle part, the mouth part of the first pincer arm 100 is provided with a first clamping part, the second pincer arm 200 has a mouth part and a handle part, the mouth part of the second pincer arm 200 is provided with a second clamping part, the middle part of the first pincer arm 100 close to the mouth part and the middle part of the second pincer arm 200 close to the mouth part are hinged, forming the structure shape of the pincers to realize the action of clamping and separating, the limiting piece is arranged on the first pincer arm 100 or the second pincer arm 200, the hands of the first pincer arm 100 and the second pincer arm 200 are used for the hands of the operating personnel to hold, the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 are clamped or separated with each other to complete the clamping or loosening action of the cable, pinching or separating the handle part of the first pincer arm 100 and the handle part of the second pincer arm 200 can make the mouth part of the first pincer arm 100 and the second pincer arm 200 close or separate, the mouth part of the first pincer arm 100 and the second pincer arm 200 is close to make the first clamping part and the second clamping part complete the shearing action, the limiting piece limits the maximum clamping stroke when the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 are clamped, the first clamping part and the second clamping part cooperate to complete the shearing action when the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 are clamped, and then the object can be cut, in the above, the maximum clamping stroke refers to the maximum angle of relative swing of the first pincer arm 100 and the second pincer arm 200 when the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 are close to each other and clamped, the limiting piece limits the maximum angle, for example, an initial state, in the initial state, the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 are in an open state, the operating personnel pinches the handle part of the first pincer arm 100 and the handle part of the second pincer arm 200, so that the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 start to close to each other and clamp, until the limiting piece works, the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200 can no longer close, at this time, it is the final state, from the initial state to the final state, it is the maximum clamping stroke between the mouth part of the first pincer arm 100 and the mouth part of the second pincer arm 200, by changing the maximum clamping stroke, the first clamping part and the second clamping part can only damage the wire skin, without damaging the wire core, or 90% of the wire skin is damaged, then the operating personnel pulls the wire skin end part outward to pull off the wire skin of the wire end part, therefore, under the action of the limiting piece, the first pincer arm 100 and the second pincer arm 200, the damage to the cable core can be effectively avoided, and the electrical safety hidden danger caused by the damage of the cable core can be prevented.

[0026] Preferably, the limiting member is arranged at the mouth of the first jaw 100. In the embodiment, the limiting member is adjustably arranged at the mouth of the first jaw 100, so as to adjust the maximum clamping stroke between the mouth of the first jaw 100 and the mouth of the second jaw 200 when the two are clamped together. By adjusting the limiting member, the maximum clamping stroke between the mouth of the first jaw 100 and the mouth of the second jaw 200 can be changed, so as to be suitable for cables with different diameters of the wire core.

[0027] In an example, the limiting member comprises a threaded rod 300, which is screwed at the mouth of the first jaw 100. When the mouth of the first jaw 100 and the mouth of the second jaw 200 are clamped together, one end of the threaded rod 300 is below the mouth of the second jaw 200.

[0028] In the embodiment, the mouth of the first jaw 100 is provided with a threaded hole matched with the threaded rod 300. When the mouth of the first jaw 100 and the mouth of the second jaw 200 are moved close to each other for clamping, one end of the threaded rod 300 can abut against the mouth of the second jaw 200, thereby achieving the clamping limitation between the first jaw 100 and the second jaw 200, limiting the maximum clamping stroke between the mouth of the first jaw 100 and the mouth of the second jaw 200, so that the first clamping part and the second clamping part are not completely clamped together, i.e., a gap is formed. When the cable with the wire sheath is placed between the first clamping part and the second clamping part, under the limiting action of the threaded rod 300, the first clamping part and the second clamping part cooperate to only damage the wire sheath or the outer part of the wire sheath, without cutting the inner wire core, thereby preventing damage to the wire core. In the above, the maximum clamping stroke between the mouth of the first jaw 100 and the mouth of the second jaw 200 also represents the maximum clamping stroke between the first clamping part and the second clamping part. The first clamping part is preferably a blade fixedly arranged at the mouth of the first jaw 100, and the second clamping part is preferably a blade fixedly arranged at the mouth of the second jaw 200. The two blades cooperate to complete the shearing action.

[0029] In the embodiment, under the action of the threaded rod 300, one end of the threaded rod 300 on the mouth of the first jaw 100 abuts against the mouth of the second jaw 200, thereby achieving the limitation and adjusting the maximum clamping stroke between the mouth of the first jaw 100 and the mouth of the second jaw 200, i.e., adjusting the maximum clamping stroke between the first clamping part and the second clamping part, i.e., adjusting the shearing depth. According to the diameters of different wire cores, the maximum clamping stroke is adjusted to avoid damage to the wire core.

[0030] More preferably, the mouth of the first jaw arm 100 is provided with a connecting portion 101, the threaded rod 300 is screwed in the connecting portion 101, and a gap is provided between the side of the threaded rod 300 and the mouth of the first jaw arm 100. In this embodiment, the connecting portion 101 protrudes from one side of the mouth of the first jaw arm 100, a threaded hole is provided through the connecting portion 101, and the threaded rod 300 can be screwed through the threaded hole. By adjusting the threaded hole through screwing, the maximum clamping stroke adjustment of the first clamping portion and the second clamping portion can be achieved.

[0031] In this embodiment, the connecting portion 101 protrudes from one side of the mouth of the first jaw arm 100, the threaded rod 300 is screwed through the threaded hole in the connecting portion 101, and a gap is formed between the threaded rod 300 and the side of the mouth of the first jaw arm 100. The gap can accommodate the cable core. By bending the cable, the head of the cable core can be bent. After removing the head of the cable core, the exposed head of the cable core is placed in the gap between the threaded rod 300 and the mouth of the first jaw arm 100. By bending slightly with force, the head of the cable core can be bent, which facilitates connection with electrical equipment. In some wiring scenarios, the head of the cable core needs to be bent, which improves the versatility of the electrician's pliers. In this embodiment, the end of the threaded rod 300 that does not abut the mouth of the second jaw arm 200 can be welded with a nut to facilitate screwing of the threaded rod 300. A circumferentially extending cutting surface 301 can also be provided on the outer periphery of the threaded rod 300. The cutting surface 301 is parallel to the axis of the threaded rod 300 and is provided with a scale. The length of the threaded rod 300 extending out of the connecting portion 101 can be quantified. In actual use, the length of the threaded rod 300 extending out of the connecting portion 101 does not accurately correspond to the distance between the first clamping portion and the second clamping portion, nor does it accurately correspond to the diameter of the cable core. This will be further explained later.

[0032] Preferably, the mouth of the second jaw arm 200 is provided with an abutting portion 201 for abutting the threaded rod 300. When the mouth of the first jaw arm 100 and the mouth of the second jaw arm 200 are in a clamped state, the threaded rod 300 abuts one side of the abutting portion 201. The other side of the abutting portion 201 is provided with a slotted portion 2011 with a polygonal cross-section. In this embodiment, one side of the abutting portion 201 abuts the threaded rod 300, and the other side of the abutting portion 201 is provided with a slotted portion 2011 with a polygonal cross-section. The abutting portion 201 can be used to screw a device nut. In this way, the electrician's pliers can also function as a wrench, further improving versatility.

[0033] In an example, the first clamping part comprises a first section 401 and a second section 402 connected to each other, and the second clamping part comprises a third section 403 and a fourth section 404 connected to each other, when the mouth of the first clamping arm 100 and the mouth of the second clamping arm 200 are clamped, the first section 401 and the third section 403 are correspondingly clamped, and the second section 402 and the fourth section 404 are correspondingly clamped, the included angle between the first section 401 and the second section 402 is an obtuse angle, and the included angle between the third section 403 and the fourth section 404 is an obtuse angle.

[0034] In the embodiment, when the mouth of the first jaw 100 and the mouth of the second jaw 200 are engaged with each other, the space between the mouth of the first jaw 100 and the mouth of the second jaw 200 is taken as the inside, the space outside the mouth of the first jaw 100 and the mouth of the second jaw 200 is taken as the outside, the first section 401 and the second section 402 are both straight blades, the third section 403 and the fourth section 404 are both straight blades, the second section 402 is inclined to the inside compared with the first section 401, the fourth section 404 is inclined to the inside compared with the third section 403, when viewed from the space between the mouth of the first jaw 100 and the mouth of the second jaw 200, the first section 401 and the second section 402 form an obtuse interior angle, the third section 403 and the fourth section 404 also form an obtuse interior angle, in this way, when the mouth of the first jaw 100 and the mouth of the second jaw 200 are engaged, the first section 401 and the third section 403 are first matched for shearing, then the second section 402 and the fourth section 404 are matched for shearing, and the intersection angle between the first section 401 and the third section 403 is large, the second section 402 and the fourth section 404 are more parallel, in this way, after the cable is placed between the mouth of the first jaw 100 and the mouth of the second jaw 200, the cable is moved to between the first section 401 and the third section 403, when the mouth of the first jaw 100 and the mouth of the second jaw 200 are engaged, since the intersection angle between the first section 401 and the third section 403 is large, the cable is also facilitated to move towards between the second section 402 and the fourth section 404 while being sheared, the operator simultaneously rotates the cable, in this way, it is beneficial to preliminarily circumferentially cut the cable sheath, when the cable is moved to between the second section 402 and the fourth section 404, at this time, the first section 401 and the third section 403 completely complete shearing, the second section 402 and the fourth section 404 still form a cross structure with the ends flared, the cable is continuously moved to a region with a larger end opening, that is, a region farther away from the first section 401 and the third section 403, the region described here is a region close to the threaded rod 300, the distance of the region is closer to the length of the threaded rod 300 extending from the connecting portion 101, the region is recorded as a working region, in addition to the limiting of the threaded rod 300, the cable cannot be continuously moved, then the second section 402 and the fourth section 404 continue to be engaged, the operator can simultaneously rotate the cable, or loosen the second section 402 and the fourth section 404 one by one and then rotate the cable one by one, further circumferentially damage the cable sheath, therefore, according to the above, the gap of the working region is closer to the length of the threaded rod 300 extending from the connecting portion 101, according to the diameter of the cable core and according to the scale on the threaded rod 300, when the diameter of the cable core of the cable to be stripped is D, if the side of the connecting portion 101 towards the abutting portion 201 is flush with the second section 402,And the fourth section 404 and the abutment 201 also flush to the side of the connecting part 101, the length of the adjusting screw rod 300 extending out of the connecting part 101 is D+L, L is 0.15-0.25mm, so that the circumference of the cable head is circumferentially scratched, and then the head cable is pulled off by manpower.

[0035] Preferably, the handle part of the first jaw arm 100 is arranged in an arc shape, the handle part of the second jaw arm 200 comprises a first arc-shaped section 501 and a second arc-shaped section 502 connected with each other, the first arc-shaped section 501 and the second arc-shaped section 502 are both arranged in an arc shape, the diameter of the virtual circle on which the first arc-shaped section 501 is located is different from the diameter of the virtual circle on which the second arc-shaped section 502 is located, one end of the first arc-shaped section 501 is connected with the mouth part of the second jaw arm 200, the other end of the first arc-shaped section 501 is connected with the second arc-shaped section 502, and the diameter of the virtual circle on which the first arc-shaped section 501 is located is greater than the diameter of the virtual circle on which the second arc-shaped section 502 is located, the arc-shaped structure improves the comfort of holding.

[0036] In this embodiment, the handle of the first clamp arm 100 is a single arc-shaped structure, while the second clamp arm 200 is a two-segment arc-shaped structure. The virtual circles containing the first arc segment 501 and the second arc segment 502 of the second clamp arm 200 have different diameters. The end of the handle of the second clamp arm 200 is the second arc segment 502. The diameter of the virtual circle containing the second arc segment 502 is smaller, while the diameter of the virtual circle containing the first arc segment 501 is larger. Thus, the curvature of the second arc segment 502 is more pronounced. The diameter of the virtual circle containing the handle of the first clamp arm 100 is between the diameters of the virtual circles containing the first arc segment 501 and the second arc segment 502. The length of the handle of the first clamp arm 100 is 11-13 cm, the diameter of the virtual circle containing the handle of the first clamp arm 100 is 17-18 cm, the length of the first arc segment 501 is 6-6.5 cm, the length of the second arc segment 502 is 5-5.6 cm, and the diameter of the virtual circle containing the first arc segment 501 is 19-2 cm. The diameter of the virtual circle containing the second arc segment 502 is 15-16.5 cm. During use, the handle end of the first clamp arm 100 is positioned downwards. The operator's index, ring, middle, and index fingers grip the handle of the first clamp arm 100, while the base of the operator's thumb and the point where the palm meets grip the second arc segment 502. This improves grip comfort and facilitates even distribution of the index, ring, middle, and index fingers, resulting in a more even distribution of stress on these four fingers. The engagement of the thumb base and the more pronounced curved second arc segment 502 is also relatively more stable. When the jaws of the first clamp arm 100 and the second clamp arm 200 are in a biting state, the space between the handle of the first clamp arm 100 and the handle of the second clamp arm 200 is taken as the inside, and the space outside the handle of the first clamp arm 100 and the handle of the second clamp arm 200 is taken as the outside. The handle of the first clamp arm 100, the first arc segment 501 and the second arc segment 502 are all arranged in an outward arched arc shape.

[0037] Rubber protective layers can also be provided on the handles of the first clamp arm 100 and the second clamp arm 200 to improve friction during operation and the safety of electrical operation.

[0038] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0039] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0040] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A pair of electrician's pliers, characterized in that, include: The first clamp arm has a mouth and a handle, and the mouth of the first clamp arm is provided with a first biting part; The second clamp arm has a mouth and a handle. The middle part of the second clamp arm is hinged to the middle part of the first clamp arm. The mouth of the second clamp arm is provided with a second biting part. A limiting element is provided on the first clamp arm or the second clamp arm; The pinching or separating of the handle portion of the first clamp arm and the handle portion of the second clamp arm allows the mouth portions of the first clamp arm and the second clamp arm to approach or separate. The mouth portions of the first clamp arm and the second clamp arm approach each other to allow the first biting portion and the second biting portion to complete the shearing action. The limiting member restricts the maximum biting stroke when the mouth portions of the first clamp arm and the second clamp arm bite together.

2. The electrician's pliers according to claim 1, characterized in that: The limiting member is located at the mouth of the first clamp arm.

3. The electrician's pliers according to claim 2, characterized in that: The limiting member is adjustablely disposed at the mouth of the first clamp arm to adjust the maximum biting stroke between the mouths of the first clamp arm and the mouth of the second clamp arm when they bite together.

4. The electrician's pliers according to claim 3, characterized in that: The limiting component includes a threaded rod, which is threadedly screwed onto the mouth of the first clamp arm. When the mouths of the first clamp arm and the second clamp arm are engaged, one end of the threaded rod is lower than the mouth of the second clamp arm.

5. The electrician's pliers according to claim 4, characterized in that: The first clamp arm has a connecting part at its mouth, and the threaded rod is screwed into the connecting part. A gap is provided between the side of the threaded rod and the mouth of the first clamp arm.

6. The electrician's pliers according to claim 4, characterized in that: The second clamp arm has a stop portion for the threaded rod to abut against. When the first clamp arm and the second clamp arm are engaged, the threaded rod abuts against one side of the stop portion, and the other side of the stop portion has a slot with a polygonal cross section.

7. The electrician's pliers according to claim 1, characterized in that: The first biting part includes a first segment and a second segment connected to each other, and the second biting part includes a third segment and a fourth segment connected to each other. When the mouth of the first jaw arm and the mouth of the second jaw arm bite together, the first segment and the third segment bite together, and the second segment and the fourth segment bite together. The included angle between the first segment and the second segment is an obtuse angle, and the included angle between the third segment and the fourth segment is an obtuse angle.

8. The electrician's pliers according to claim 1, characterized in that: The handle of the first clamp arm is arc-shaped.

9. The electrician's pliers according to claim 1, characterized in that: The handle portion of the second clamp arm includes a first arc segment and a second arc segment connected to each other. Both the first arc segment and the second arc segment are arc-shaped, and the diameter of the virtual circle containing the first arc segment and the diameter of the virtual circle containing the second arc segment are different.

10. An electrician's pliers according to claim 9, characterized in that: One end of the first arc segment is connected to the mouth of the second clamp arm, the other end of the first arc segment is connected to the second arc segment, and the diameter of the virtual circle containing the first arc segment is greater than the diameter of the virtual circle containing the second arc segment.

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