Pliers head and pressure pliers

Abstract

A pliers head characterized in that it comprises the following: a first crimping head with a first base and a plurality of first ribs and side walls extending from the first base; a second crimping head with a second base and a plurality of second ribs extending from the second base; wherein the side wall extends at least from the side end of a first rib to the side end of a last rib and a groove for receiving a second rib is formed between two adjacent first ribs arranged in the same direction and the side wall; the side ends of the multitude of second ribs are completely open; where the multitude of first and second ribs interlock during crimping to change the opening of the crimp interface.

Description

TECHNICAL AREA

[0001] This utility model relates to the field of pliers technology and in particular to a pliers head and a pressure pliers. STATE OF THE ART

[0002] In the field of wire connections, crimping pliers, such as wire crimping pliers, are indispensable tools for a reliable connection between the conductor end and the ferrule. Their central functional element is the opposing crimp interfaces. The interlocking rib structures at the crimp interfaces plastically deform the ferrule, creating a tensile connection with the conductor end. To ensure the stability of the relative movement of the crimp interfaces during the crimping process, existing technologies typically incorporate a guide surface positioned transversely to the longitudinal direction of the ribs, outside the rib working area of ​​the crimp interfaces. Corresponding guide projections are located on the opposing crimp interfaces.The interaction of the guide surface and guide projections restricts the relative displacement of the crimp interfaces along the longitudinal direction of the ribs, thus ensuring the connection quality (such as the technical solution described in patent CN111279561B).

[0003] However, the guide structure of the aforementioned technology still exhibits numerous shortcomings that urgently require improvement. Firstly, the fit between the guide surface and the guide projection necessitates high-precision machining to ensure assembly accuracy. This not only increases the manufacturing difficulties and production costs of the crimp interfaces but also carries the risk of fit failure due to machining errors, thus compromising the guide stability of the crimp interfaces. Secondly, the guide projection extending from the crimp interface base and the associated guide surface structure increase the overall structural complexity of the crimp interfaces. During assembly and disassembly, the guide projection can collide with the jaws or other components, particularly when the crimp interfaces need to be rotated around their axis of rotation to adjust the working position or for replacement.This further increases the risk of collision and makes the crimping tool more difficult to use.

[0004] Furthermore, with existing technology, an uneven, raised area forms on the side adjacent to the crimp interface opening due to structures such as the guide projection. This not only increases the likelihood of foreign matter adhering, making cleaning and maintenance more difficult, but can also hinder the insertion or removal of workpieces such as cable protection conduits, thus impairing workpiece positioning accuracy and operational efficiency. CONTENTS OF THE PRESENT USE SAMPLE

[0005] In order to remedy at least one deficiency of the prior art, this utility model provides a crimping head and crimping pliers in which the adjacent sides of the opening of the crimp interfaces do not have separate guide projections or other structures.

[0006] To achieve the aforementioned objectives, this utility model provides a crimping head comprising a first crimping head and a second crimping head. The first crimping head includes a first base and a plurality of first ribs and side walls extending from the first base. The second crimping head includes a second base and a plurality of second ribs extending from the second base, the side wall extending at least from the side end of a first rib to the side end of a last rib, and a groove for receiving a second rib formed between two adjacent first ribs arranged in the same direction and the side wall; the side ends of the plurality of second ribs being completely open; and the plurality of first ribs and second ribs interlocking during crimping to modify the opening of the crimp interface.

[0007] The first / second base forms the supporting structure of the crimping head and serves to support components such as ribs and side walls. The first / second rib represents the central working structure, enabling mutual embedding and controlling the deformation of the wire ferrule during the crimping process; the side wall refers to the lateral protective structure extending from the first base.

[0008] Optionally, the side walls have at least two, namely a first and a second side wall, wherein the first and second side walls are of equal width and at least one of the first and second side walls projects from a first rib in the width direction. The width direction can be perpendicular to the rib extension direction and parallel to the side end face.

[0009] Optionally, the side wall length is greater than the length of the plurality of first ribs, and the side wall completely covers the alternating grooves formed at the side ends of the plurality of second ribs when the first and second crimp heads are in the fully closed state. The fully closed state refers to the operating condition in which the ribs of the two crimp heads interlock until the maximum stroke is reached and the crimp interface opening has reached its minimum size.

[0010] Optionally, to ensure that the outermost rib maintains effective contact with the side wall throughout the crimping process and to avoid guidance deviation caused by contact failure in the edge area, the length of the outermost second rib can be no shorter than the length of the side wall, and the side wall interacting with the outermost second rib can be set away from the first rib in the width direction to interact with the outermost second rib.

[0011] Optionally, precise guidance during the crimping process can be achieved by means of a guide surface or channel on the outermost rib. At the same time, the "complete coverage" prevents uneven, protruding areas, thus solving problems with malfunctions and cleaning.The upper surface of the outermost first rib is designed as a first guide section, the corresponding second rib is provided with a first guide surface or a first guide channel that interacts with the first guide section, the upper surface of the outermost second rib is designed as a second guide section and the corresponding first rib is provided with a second guide channel or a second guide surface that interacts with the second guide section; wherein, when the first crimping head and the second crimping head are in the fully closed state, the plier head is completely covered by the first rib and the second rib, respectively, on the side perpendicular to the side end.

[0012] Optionally, the first guide section / second guide section can refer to a protruding structure extending from the top of the rib for guidance and positioning; the first guide surface / second guide surface can refer to a planar guide structure adapted to the guide section; and the first guide channel / second guide channel can refer to a groove-shaped guide structure adapted to the guide section.

[0013] Optionally, to ensure that the guide section and the guide surface / channel remain in close contact during the crimping process and to improve the accuracy and stability of the guide, the first guide section can be formed by protruding from the top of the first rib towards the second crimp section along the crimping direction, and the second guide section can be formed by protruding from the top of the second rib towards the first crimp section along the crimping direction.

[0014] Optionally, to ensure effective guidance throughout the entire process, the length of the first rib with the first guide section can be at least as long as the sidewall length, and the length of the first rib with the first guide section can be greater than the length of the other first ribs. The length specification refers to the rib's extension in the crimping direction.

[0015] Optionally, a gap can be provided between the outermost first rib and the opposite side wall to form a second guide channel. The root of the outermost second rib, or the root of the outermost first rib, is provided with a notch to form the first or second guide surface, respectively. The design with guide channels in gaps and guide surfaces in notches eliminates the need for additional independent guide structures. This simplifies the overall design of the crimping head while simultaneously ensuring the effective implementation of the guide function.

[0016] Optionally, the first crimping head includes a first rotating shaft extending from the first base towards the numerous first ribs. The first crimping head is rotatably mounted around the geometric axis of rotation of this first rotating shaft. The second crimping head includes a second rotating shaft extending from the second base towards the numerous second ribs. The second crimping head is also rotatably mounted around the geometric axis of rotation of this second rotating shaft. The rotating shaft and the rotatable structure allow the crimping head to adjust its angle around the axis of rotation to accommodate different crimping conditions (e.g., crimping conductors with different specifications) while simultaneously avoiding collisions with existing guide structures. The rotating shaft is a wave-shaped component that enables the rotation of the crimping head.The geometric axis of rotation is the central axis of the rotating shaft and serves as a reference line for the rotation of the crimping head.

[0017] Optionally, at least one of the first ribs not located on the outermost side and the second rib not located on the outermost side have a projection at the crimp interface opening. This projection rises from the intersection of the first and second ribs, respectively, to its highest point. This gradual projection at the rib intersection creates a local indentation in the cable sheath during crimping, thereby increasing the mechanical contact force on the conductor and preventing the conductor from loosening after crimping. The intersection point can refer to the intersection of the first ribs running in opposite directions, or to the intersection of the second ribs running in opposite directions; the highest point can refer to the location where the projection is greatest.

[0018] This utility model provides a crimping tool, including all the crimping heads described above, a first and a second crimping jaw, each connected to the first and second crimping heads, respectively; and a first and a second crimping handle, each connected to the first and second crimping jaws, respectively. The crimping tool is suitable for various applications such as power engineering, the assembly of automotive wiring harnesses, and the construction of communication lines, and can crimp conductors of different diameters.

[0019] Optionally, the crimping tool further comprises a first bearing housing and a second bearing housing. The first crimping head also includes a first rotating shaft extending from the first base away from the numerous first ribs. The first rotating shaft is rotatably mounted in the first bearing housing about its geometric axis of rotation. The second crimping head further comprises a second rotating shaft extending from the second base away from the numerous second ribs. The second rotating shaft is rotatably mounted in the second bearing housing about its geometric axis of rotation.

[0020] Optionally, the pressure clamp also includes a first positioning pin and a second positioning pin, which are located in the first bearing housing and the second bearing housing respectively, to interact with the first positioning holes on the first rotating shaft and the second positioning holes on the second rotating shaft respectively.

[0021] Optionally, the first bearing housing is provided on both sides with a first support shaft, via which the first bearing housing and the first jaw are connected. The second bearing housing is provided on both sides with a second support shaft, via which the second bearing housing and the second jaw are connected.

[0022] Optionally, the first jaw of the crimping pliers includes a first elastic plate, and the second jaw includes a second elastic plate. The first elastic plate divides into two legs at the crimping head section of the pliers. The first crimping head is rotatably mounted between the two branched first elastic plates. Similarly, the second elastic plate divides into two legs at the crimping head section of the pliers. The second crimping head is rotatably mounted between the two branched second elastic plates. This branched design of the elastic plates provides elastic support for the crimping head, dampens the impact force during crimping, and facilitates the assembly and disassembly of the crimping head. An elastic plate is a sheet-like structure with elastic deformation capability; the branching refers to the fact that the elastic plate divides into two supporting legs at its end.

[0023] Optionally, the first jaw of the pliers includes two additional jaw connection plates, each with a first elastic plate positioned between them. The second jaw of the pliers also includes two second jaw connection plates, each with a second elastic plate positioned between them. The jaw connection plates laterally define and support the elastic plates, thereby increasing their bending strength and ensuring stable elastic behavior during long-term use.

[0024] Optionally, the first elastic plate has a first groove on the body of the pressure pliers, facing the second elastic plate, and the second elastic plate has a second groove on the body of the pressure pliers, also facing the first elastic plate. The pressure pliers also include a first elastic element, both ends of which are positioned in the first and second grooves, respectively. The first elastic element is a component with elastic recovery, such as a spring or an elastic rubber. The first and second grooves are groove-like structures that receive the ends of the elastic element and enable its positioning.

[0025] Optionally, the pressure pliers can also include a ratchet stop located in the second handle and a connecting piece. The ratchet stop consists of a ratchet pawl and a second elastic element. The connecting piece has a ratchet end. This ratchet end has a ratchet mechanism for engaging the ratchet pawl. The two ends of the second elastic element are each connected to the second handle and the ratchet pawl, respectively.

[0026] Optionally, the connector can also have an arc-shaped end, and the first elastic plate can have an arc-shaped groove that fits with the arc-shaped end.

[0027] In summary, this utility model offers an improved crimping head structure. By removing the interacting guide surfaces and guide projections of the opposing crimp interfaces, and by designing the side area adjacent to the crimp interface opening as a side wall (i.e., the side end and the side with the crimp interface opening are not parallel; the side end can be perpendicular to the side with the crimp interface opening), the entire structure remains flush. This solves the problems of the prior art regarding high manufacturing difficulties, poor user-friendliness, and cumbersome cleaning and maintenance.

[0028] The improvements offer at least one of the following advantages: First, they simplify the design of the crimp interfaces. This eliminates the need for high-precision guide surfaces and protrusions, simplifying manufacturing, reducing costs, and minimizing guidance errors due to machining flaws. Second, removing the protruding structure effectively prevents the jaws and other components from jamming when rotating the crimp interface for adjustment or disassembling it for replacement. This improves the operability of the crimping tool and the efficiency of crimp interface replacement. Third, the flush side ends reduce the areas where foreign matter can accumulate, facilitating cleaning and maintenance, and preventing the protruding structure from interfering with workpiece insertion and removal. This contributes to higher workpiece positioning accuracy and increased work efficiency.Fourth, the flush side-end structure allows for a more even distribution of force on the workpiece during the crimping process. This reduces local stress peaks and further improves the connection reliability between the ferrule and the conductor end. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 schematically shows the pliers head in the fully closed state according to embodiment 1 of this utility model; Fig. Figure 2 schematically shows the pliers head in a partially open or partially closed state according to embodiment 1 of this utility model; Fig. Figure 3 shows a side view of the pliers head. Fig. 2 on the side of the crimp interface opening; Fig. Figure 4 schematically shows the first crimping head according to embodiment 1 of this utility model; Fig. Figure 5 shows a side view of the first crimping head. Fig. 4 on the side of the crimp interface opening; Fig. Figure 6 schematically shows the first crimping head. Fig. 4 in a different direction; Fig. Figure 7 schematically shows the second crimping head according to embodiment 1 of this utility model; Fig. Figure 8 schematically shows the pressure pliers in the fully closed state according to embodiment 2 of this utility model; Fig. Figure 9 schematically shows the pressure pliers in the partially open or partially closed state according to embodiment 2 of this utility model; Fig. Figure 10 schematically shows the pressure pliers. Fig. 9 in another direction; Fig. Figure 11 shows an exploded view of the pressure pliers from embodiment 2 of this utility model after removal of the handle cover, with the first elastic element and the second elastic element hidden; Fig. Figure 12 schematically shows the bearing housing from embodiment 2 of this utility model; Fig. Figure 13 shows a top view of the pressure clamp. Fig. 8 from front to back; Fig. Figure 14 shows a cross-section along line AA. Fig. 13; Fig. Figure 15 shows a cross-section of the pressure pliers. Fig. 9 along line AA at the same position as in Fig. 13; Fig. Figure 16 shows a cross-section of the pressure pliers. Fig. 8 parallel to the end of the page; Fig. Figure 17 shows a cross-section of the pressure pliers. Fig. 9 parallel to the end of the page. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned and other objects, features and advantages of this utility model clearer and more understandable, preferred embodiments are described in detail below with reference to the attached drawings. Example 1

[0030] See Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7. This embodiment provides a crimping head 100 with a first crimping head 10 and a second crimping head 20. The first crimping head 10 comprises a first base 101 and a plurality of first ribs (102 and 102') and side walls (103 and 103') extending from the first base.The second crimp head 20 comprises a second base 201 and a plurality of second ribs (202 and 202') extending from the second base, the side wall extending at least from the side end of a first rib to the side end of a last rib, and a groove (111 and 111') for receiving a second rib formed between two adjacent first ribs arranged in the same direction and the side wall; the side ends 201 of the plurality of second ribs being completely open, or one can say that the side ends 204 of the second ribs having no projections or side wall structures, the plurality of first ribs and second ribs interlocking during crimping to modify the opening 30 of the crimp interface. For example, at least one of the following properties may change: the size or the shape of the opening.

[0031] The first base 101 and the second base 201 can be curved, with the central section projecting outwards. The shape of the side ends can be determined based on the base shape. Optionally, the plurality of first ribs (102 and 102') further comprises two sets of ribs arranged in opposite directions. A first set of ribs 102 and a second set of ribs 102' run in the same direction. The two first sets of ribs (102 and 102') are arranged alternately. Similarly, the plurality of second ribs (202 and 202') comprises two sets of ribs arranged in opposite directions. A second set of ribs 202 and a second set of ribs 202' run in the same direction. The two second sets of ribs (202 and 202') are arranged alternately.

[0032] As in the Fig. 4, Fig. 5 to Fig. As shown in Figure 6, the first crimping head 10 has two side walls, a first side wall 103' and a second side wall 103', which are opposite each other. The width dimensions W of the first and second side walls can be the same. The first and second side walls 103' project beyond the first rib in the width direction, with the first side wall 103' projecting beyond the first rib on both sides in the width direction, thus forming projections 109. The lower edge of the projection 109 forms a lower contact surface 110 for interaction with the second rib. The length of the outermost second rib is not shorter than the length of the side wall.

[0033] The side wall is longer than the length of the multiple first ribs. When the first and second crimp heads are fully closed, the side wall completely covers the alternating grooves formed by several second ribs at the side ends. The longitudinal direction corresponds to that shown in Fig. 2 L-direction shown.

[0034] What's next? Fig. As can be seen from Figure 7, the upper surface of the outermost first rib is designed as a first guide section 104, the corresponding second rib is equipped with a first guide surface 107 or a first guide channel 105 that interacts with the first guide section, the upper surface of the outermost second rib is designed as a second guide section 204 and the corresponding first rib is equipped with a second guide channel or a second guide surface 207 that interacts with the second guide section; wherein, when the first crimping head and the second crimping head are in the fully closed state, the plier head is completely covered by the first rib and the second rib, respectively, on the side that is perpendicular to the side end.

[0035] Optionally, the first guide section is formed by protruding from the top of the first rib towards the second crimp section along the crimp direction, and the second guide section is formed by protruding from the top of the second rib towards the first crimp section along the crimp direction.

[0036] In this embodiment, the first rib with the first guide section and the side wall are of the same length in the longitudinal direction, the length of the first rib with the first guide section is greater than the length of the other first ribs, and the length of the second rib with the second guide section is greater than the length of the other second ribs.

[0037] In this embodiment, a gap is provided between the outermost first rib and the opposite side wall to form the second guide channel, and the root of the outermost second rib or the root of the outermost first rib is provided with a notch to form the first guide surface or second guide surface, respectively.

[0038] In this embodiment, the first crimping head additionally comprises a first rotating shaft 106 extending from the first base towards the numerous first ribs. The first crimping head is rotatably mounted about the geometric axis of rotation of this first rotating shaft. The second crimping head additionally comprises a second rotating shaft 206 extending from the second base towards the numerous second ribs. The second crimping head is also rotatably mounted about the geometric axis of rotation of this second rotating shaft. The ends of the first rotating shaft 106 and the second rotating shaft 206 are additionally provided with annular grooves for connecting seals.

[0039] In this embodiment, at least one of the first ribs not located on the outermost side and the second rib not located on the outermost side have a projection 31 at the opening of the crimp interface, the projection gradually increasing from the intersection a of the first rib or from the intersection of the second rib to the highest point.

[0040] The terms "first" and "second" mentioned above serve only to distinguish similar technical features. They do not significantly restrict the specific design, dimensions, functional effects, joining methods, or arrangement of the respective features. For example, the second side wall could extend beyond the first rib in the lateral direction, etc. Example 2

[0041] See Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16 to Fig. 17. This embodiment also provides a crimping tool 200, comprising one of the crimping heads 10 described in embodiment 1, a first jaw 51 and a second jaw 52, ​​each connected to a first crimping head and a second crimping head, respectively, and a first handle 80 and a second handle 90, respectively, each connected to the first jaw and the second jaw. The terms "first" and "second" are not limited here; they can refer to either the first jaw with the first crimping head, the second jaw with the second crimping head, the first handle with the first jaw, or the second handle with the second jaw. The crimping tool can comprise three parts: a head 210, a body 220, and a handle 230.

[0042] Protective covers can be attached to the first plier handle 80 and the second plier handle 90.

[0043] In this embodiment, the pressure clamp further comprises a first bearing housing 41 and a second bearing housing 42. The first rotating shaft 106 is rotatably mounted in the first bearing housing about the geometric axis of rotation of this first rotating shaft. The second rotating shaft 206 is rotatably mounted in the second bearing housing about the geometric axis of rotation of this second rotating shaft. The first bearing housing is further provided on both sides with a first support shaft 411, via which the first bearing housing and the first clamping jaw are connected. The first bearing housing is provided with a hole 412 for the first positioning pin 74. The second bearing housing is provided on both sides with a second support shaft, via which the second bearing housing and the second clamping jaw are connected. The second bearing housing can be designed analogously to the first bearing housing. The ends of the first support shaft 411 and the second support shaft are further provided with annular grooves for connecting seals.

[0044] In this embodiment, the pressure clamp also comprises a first positioning pin 74 and a second positioning pin 74', which are arranged in the first bearing seat and the second bearing seat respectively, to interact with the first positioning holes 108 on the first rotating shaft and the second positioning holes 208 on the second rotating shaft respectively.

[0045] In this embodiment, the first jaw of the pliers comprises a first elastic plate 51, and the second jaw of the pliers comprises a second elastic plate 52. The first elastic plate divides into two legs at the head section of the crimping pliers. The first crimping head is rotatably mounted between the two branched first elastic plates. Similarly, the second elastic plate divides into two legs at the head section of the crimping pliers. The second crimping head is rotatably mounted between the two branched second elastic plates. The first elastic plate in the pliers body can consist of two superimposed plates or of a single, one-piece molded plate. The second elastic plate in the pliers body can consist of two superimposed plates or of a single, one-piece molded plate.

[0046] In this embodiment, the first jaw of the pliers further comprises two first jaw connection plates 53, between each of which a first elastic plate is arranged. The second jaw of the pliers also comprises two second jaw connection plates 60, between each of which a second elastic plate is arranged. The first elastic plate and the first jaw connection plates can be connected by means of threaded parts. The second elastic plate and the second jaw connection plates can be connected by means of threaded parts.

[0047] In this embodiment, the first elastic plate has a first groove 511 on the body of the pressure pliers, which faces the second elastic plate, and the second elastic plate has a second groove 521 on the body of the pressure pliers, which faces the first elastic plate. The pressure pliers also include a first elastic element 75, both ends of which are positioned in the first and second grooves, respectively. The first elastic element 75 can be a compression spring.

[0048] In this embodiment, the pressure pliers can also include a ratchet stop arranged in the second pliers handle and a connecting piece 71. The ratchet stop consists of a ratchet pawl 73 and a second elastic element 76. The connecting piece has a ratchet end 711. This ratchet end has a ratchet for engaging the ratchet pawl. The two ends of the second elastic element are each connected to the second pliers handle and the ratchet pawl. Adjustment is achieved via the adjusting element 72. The connecting piece 71 can consist of two superimposed parts or a single-piece formed sheet metal. The second elastic element 76 can be a tension spring.

[0049] In this embodiment, the connecting piece can also have an arc-shaped end 712, and the first elastic plate can have an arc-shaped groove 512 that fits with the arc-shaped end.

[0050] It is known to those skilled in the art that the terms "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside", etc., in the disclosure of this utility model, indicate the orientation or positional relationship according to the accompanying drawings. These terms serve only to simplify the description of the utility model and do not imply that the described device or element must have a specific orientation or be designed and operated in a specific orientation. Therefore, the above terms are not to be interpreted as limitations of the utility model.

[0051] Although the utility model was described above using preferred embodiments, this does not limit the scope of protection. People skilled in the art can make modifications and refinements without exceeding the scope of protection of the utility model. The scope of protection of this utility model is therefore determined by the scope claimed in the claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 111279561B

[0002]

Claims

[1] A pliers head, characterized by that it includes the following: a first crimping head with a first base and a plurality of first ribs and side walls extending from the first base; a second crimping head with a second base and a plurality of second ribs extending from the second base; wherein the side wall extends at least from the side end of a first rib to the side end of a last rib and a groove for receiving a second rib is formed between two adjacent first ribs arranged in the same direction and the side wall; the side ends of the multitude of second ribs are completely open; where the multitude of first and second ribs interlock during crimping to change the opening of the crimp interface. [2] The pliers head according to claim 1, characterized bythat the side walls have at least two, namely a first and a second side wall, wherein the first side wall and the second side wall are of the same size in the width direction and at least one of the first side wall and the second side wall projects from a first rib in the width direction. [3] The pliers head according to claim 1, characterized by , that the length of the side wall is greater than the length of the plurality of first ribs and that the side wall completely covers the grooves formed alternately at the side ends of the plurality of second ribs when the first crimping head and the second crimping head are in the fully closed state. [4] The pliers head according to any one of claims 1 to 3, characterized by, that the length of the outermost second rib is not shorter than the length of the side wall and that the side wall cooperating with the outermost second rib extends in the width direction from the first rib in order to cooperate with the outermost second rib. [5] The pliers head according to claim 4, characterized by, that the upper surface of the outermost first rib is designed as a first guide section, the corresponding second rib is provided with a first guide surface or a first guide channel that interacts with the first guide section, the upper surface of the outermost second rib is designed as a second guide section and the corresponding first rib is provided with a second guide channel or a second guide surface that interacts with the second guide section; wherein when the first crimping head and the second crimping head are in the fully closed state, the plier head is completely covered by the first rib and the second rib, respectively, on the side perpendicular to the side end. [6] The pliers head according to claim 5, characterized by, that the first guide section is formed by protruding from the top of the first rib in the direction of the second crimp section along the crimp direction, and the second guide section is formed by protruding from the top of the second rib in the direction of the first crimp section along the crimp direction. [7] The pliers head according to claim 6, characterized by , that the length of the first rib with the first guide section is not shorter than the length of the side wall, the length of the first rib with the first guide section is greater than the length of the other first ribs, and the length of the second rib with the second guide section is greater than the length of the other second ribs. [8] The pliers head according to claim 7, characterized by, that a gap is provided between the outermost first rib and the opposite side wall to form the second guide channel, and that the root of the outermost second rib or the root of the outermost first rib is provided with a notch to form the first guide surface or second guide surface, respectively. [9] The pliers head according to claim 1, characterized by , that at least one of the first ribs not located on the outermost side and the second rib not located on the outermost side have a projection at the opening of the crimp interface, the projection gradually increasing from the intersection of the first rib or from the intersection of the second rib to the highest point. [10] A pressure clamp, characterized by that it includes the following: a pliers head according to any one of claims 1 to 9; a first and a second crimping jaw, each connected to the first crimping head and the second crimping head, respectively; a first pliers handle and a second pliers handle, each connected to the first jaw of the pliers and the second jaw of the pliers.

Images