Crimpzange

Abstract

Crimping pliers, characterized in that the crimping pliers comprise a fastening element (10), a movable plier head (20), a movable handle (30) and a locking component (40), wherein one end of the fastening element (10) forms a fastening plier head (11) and the other end forms a fastening handle (12); wherein the movable plier head (20) and the fastening element (10) are hinged at the first point (101), the first point (101) being located between the jaws (105) of the crimping pliers (100) and the fastening handle (12); wherein the movable handle (30) and the movable plier head (20) are hinged at a second point (102); wherein the locking component (40) comprises the following: a coupling section (41) which is hinged at a third point (103) on the fastening element (10) and at a fourth point (104) on the movable handle (30), wherein the connecting lines connecting the first point (101), the second point (102), the third point (103) and the fourth point (104) form a quadrilateral; a first elastic element (42) connected to the coupling section (41) and configured to reset the coupling section (41); an adjustment section (43) rotatably connected to the movable handle (30) and adapted to the coupling section (41) to limit the outward rotation of the movable handle (30), wherein in the vertical direction the projection of the adjustment section (43) lies completely within the projection of the movable handle (30), the vertical direction being the direction perpendicular to the quadrilateral formed by the first point (101), the second point (102), the third point (103) and the fourth point (104); a second elastic element (44) connected to the adjustment section (43) and configured to reset the coupling section (41); wherein the locking component (40) also includes a forced release component (430) which is rigidly connected to the adjustment section (43), wherein the forced release component (430) is located on a side of the movable handle (30) which faces towards or away from a user.

Description

TECHNICAL AREA

[0001] The present utility model relates to the field of hand tools and in particular to crimping pliers. STATE OF THE ART

[0002] A crimping tool is a widely used hand tool for electrical wiring, network installation, and other tasks. Its primary function is to securely and reliably connect a wire to a connector (such as an RJ45 plug, wire terminal, or similar). A typical crimping tool usually comprises a pair of handles connected by a pivoting shaft, upper and lower jaws (or clamping bars) attached to the front ends of the handles, and a self-locking mechanism located on the head of the tool. This self-locking mechanism engages automatically once the preset crimping force is reached when the user applies pressure to crimp, ensuring a complete crimp and effectively preventing poor contact due to insufficient pressure.

[0003] To release the self-locking mechanism after crimping, the crimping pliers must be equipped with a release device. In related technologies, the crimping pliers' release device, such as a release button or lever, is located on the inside of the two handles. This arrangement is inconvenient to use. For example, if the user has particularly large fingers, it is difficult to fit them between the two handles, which can impair efficiency. CONTENTS OF THE PRESENT USE SAMPLE

[0004] The purpose of this utility model is to provide a crimping tool.

[0005] The objective of this utility model is achieved by the following technical solution to the aforementioned technical problems: A crimping tool comprises a fastening element, a movable plier head, a movable handle, and a locking component, wherein one end of the fastening element forms a fastening plier head and the other end forms a fastening handle; wherein the movable plier head is hinged to the fastening element at the first point, the first point being located between the jaws of the crimping tool and the fastening handle; the movable handle and the movable plier head are hinged at the second point; the locking component comprises the following: a coupling section that is hinged at the third point on the fastening element and at the fourth point on the movable handle; the connecting lines that link the first, second, third and fourth points form a quadrilateral; a first elastic element that is connected to the coupling section and configured to reset the coupling section; an adjustment section rotatably connected to the movable handle and adapted to the coupling section to limit the outward rotation of the movable handle, wherein in the vertical direction the projection of the adjustment section lies entirely within the projection of the movable handle, the vertical direction being the direction perpendicular to the quadrilateral formed by the first point, the second point, the third point and the fourth point; a second elastic element connected to the adaptation section and configured to reset the coupling section; The locking component also includes a forced release component which is firmly connected to the adjustment section; the forced release component is located on one side of the movable handle, facing either towards or away from the user. In a further development, it is provided that the forced release component comprises a sleeve and a lever provided on one side of the sleeve, the sleeve being firmly connected to the coupling section in order to release the locking state of the two if the coupling section and the coupling section unexpectedly engage or jam;

[0006] The lever is located on one side of the movable handle, facing either towards or away from the user.

[0007] In a continuing education program, the adaptation section is designed to include the following: a column that is rotatably connected to the movable handle; a prong tooth that is connected to the column and adapted to the adaptation section; a connecting block that is connected to the column, wherein one end of the second elastic element is connected to the connecting block and the other end is connected to the movable handle.

[0008] In a further training, it is provided that the crimping pliers also include a pliers component, the pliers component is located in the jaws, and the pliers component is detachably connected to at least one of the fastening pliers head or the movable pliers head.

[0009] In a further development, it is provided that at least one of the fastening pliers head or the movable pliers head is provided with a connecting groove, the connecting groove has a first and a second end, the pliers component comprising the following: a pliers section located in the jaws and provided with a buckle groove, the buckle groove being directly opposite the first end of the connecting groove; a connecting section which is arranged penetrating through the connecting groove and the buckle groove to connect the pliers section to the corresponding fastening pliers head or the movable pliers head; the connecting section can be moved to the other end to release itself from the buckle groove.

[0010] In a further training course, it is stipulated that the longitudinal direction of the connecting groove is inclined relative to the longitudinal direction of the jaws.

[0011] In a further training, it is provided that the connecting groove has a fastening part and a release part, the first end is located in the fastening part, the second end is located in the release part, the buckle groove is located directly opposite the fastening part, whereby along the width direction of the connecting groove the fastening part is larger than the release part.

[0012] In a further training course, it is stipulated that the shape of the fastening part is round, while the shape of the release part corresponds to that of a raceway.

[0013] In a continuing education course, the connection section is designed to include the following: a connecting column that is arranged penetrating through the buckle groove and the connecting groove; a first boundary end that is firmly connected to one end of the connecting column; a second limiting end that is locked onto the other end of the connecting column, whereby the connecting column can rotate when it is at the first end, and can move to the second end when it rotates into a suitable position.

[0014] In a further training, it is provided that the pliers section includes a mounting block and a clamping block, the mounting block is connected to the clamping block, the buckle groove is located in the mounting block, the mounting block is arranged either on the fastening pliers head or on the movable pliers head.

[0015] Exemplary embodiments of the present utility model provide a crimping tool. By arranging the projection of the adjusting section completely within the projection of the movable handle, and by positioning the adjusting section at least partially on one side of the movable handle, the crimping tool allows the user easy access to the adjusting section. The user can easily rotate the adjusting section, thus simplifying and making the reset process of the crimping tool easier and more convenient. Furthermore, by allowing the adjustment section to be moved, the tightening or loosening of the crimping section can be controlled, making operation simple and convenient. BRIEF DESCRIPTION OF THE DRAWING

[0016] To clarify the technical solutions of the embodiments of this utility model, the drawings required for the descriptions in these embodiments are briefly described below. Obviously, the accompanying drawings in the following description represent some embodiments of this utility model, and other drawings can be derived from these drawings without any creative effort by the person skilled in the art in this field. Fig. Figure 1 shows a three-dimensional structural representation of the crimping tool in an embodiment of the present application. Fig. Figure 2 shows a front view of the crimping pliers in the open state in an embodiment of the present application. Fig. Figure 3 shows a front view of the crimping tool in the clamping state in an embodiment of the present application. Fig. Figure 4 shows a schematic partial exploded view of the crimping pliers in an embodiment of the present application. Fig. Figure 5 shows a schematic, partially structural representation of the crimping pliers in an embodiment of the present application. Fig. Figure 6 shows a schematic, partially structural representation of the crimping pliers in the open state in an embodiment of the present application. Fig. Figure 7 shows a schematic, partially structural representation of the crimping pliers in the clamping state in an embodiment of the present application. Fig. Figure 8 shows a further partial exploded view of the crimping pliers in an embodiment of the present application. Fig. Figure 9 shows an enlarged representation of the partial assembly of the crimping pliers in an embodiment of the present application. Fig. Figure 10 shows a further enlarged representation of the partial assembly of the crimping pliers in an embodiment of the present application.

[0017] 100. Crimping pliers; 101. First point; 102. Second point; 103. Third point; 104. Fourth point; 105. Jaw; 10. Fastening element; 11. Fastening plier head; 12. Fastening handle; 20. Movable plier head; 30. Movable handle; 40. Locking component; 41. Coupling section; 42. First elastic element; 43. Adjustment section; 4311. Column; 4312. Engagement tooth; 4313. Connecting block; 430. Forced release component; 4301. Sleeve; 4302. Lever; 44. Second elastic element; 50. Pliers component; 51. Pliers section; 511. Mounting block; 5111. Buckle groove; 512. Pliers block; 52. Connecting section; 521. Connecting column; 522. Limiting end; 60. Connecting groove; 601. First end; 602. Second end; 603. Fastening part; 604. Release part. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of this utility model are described clearly and completely below with reference to the drawings in those embodiments. Obviously, the described embodiments are some of the embodiments of this utility model, not all of them. All other embodiments that a person skilled in the art can derive from the embodiments in this utility model without any creative activity are within the scope of protection of this utility model.

[0019] It is understood that the terms “comprehensive” and “inclusive” in this description and the accompanying claims indicate the presence of the described features, ensembles, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, ensembles, steps, operations, elements, components and / or collections thereof.

[0020] It is further understood that the terminology used in this description of the present utility model serves only to describe certain embodiments and is not intended to limit the present utility model. In this description and the accompanying claims of the present utility model, the singular forms "a", "a" and "the" are to be understood as also including the plural forms, unless the context clearly indicates otherwise.

[0021] It should further be understood that the term “and / or”, as used in this description of the present utility model and the accompanying claims, denotes and includes any combination and all possible combinations of one or more of the associated listed elements.

[0022] It should be noted that when using “-” to represent a range in the present embodiment, the endpoint values, e.g. 1-10, are to be included; this range is to be understood as greater than or equal to 1 and less than or equal to 10.

[0023] A crimping tool is a widely used hand tool for electrical wiring, network installation, and other tasks. Its primary function is to securely and reliably connect a wire to a connector (such as an RJ45 plug, wire terminal, or similar). A typical crimping tool usually comprises a pair of handles connected by a pivoting shaft, upper and lower jaws (or clamping bars) attached to the front ends of the handles, and a self-locking mechanism located on the head of the tool. This self-locking mechanism engages automatically once the preset crimping force is reached when the user applies pressure to crimp, ensuring a complete crimp and effectively preventing poor contact due to insufficient pressure.

[0024] To release the self-locking mechanism after crimping, the crimping pliers must be equipped with a release device. In related technologies, the crimping pliers' release device, such as a release button or lever, is located on the inside of the two handles. This arrangement is inconvenient to use. For example, if the user has particularly large fingers, it is difficult to fit them between the two handles, which can impair efficiency.

[0025] To solve the aforementioned problems, the present application discloses a crimping tool comprising a fastening element, a movable plier head, a movable handle, and a locking component, wherein one end of the fastening element forms a fastening plier head and the other end forms a fastening handle; wherein the movable plier head is hinged to the fastening element at the first point, the first point being located between the jaws of the crimping tool and the fastening handle; the movable handle and the movable plier head are hinged to the second point; the locking component comprises a coupling section, a first elastic element, an adjustment section, and a second elastic element. The coupling section is hinged to the fastening element at the third point and to the movable handle at the fourth point; the connecting lines linking the first, second, third, and fourth points form a quadrilateral.The first elastic element is connected to the coupling section and is configured to reset the coupling section; the adjustment section is rotatably connected to the movable handle and adjusted to the coupling section to limit the outward rotation of the movable handle, wherein, in the vertical direction, the projection of the adjustment section lies entirely within the projection of the movable handle, the vertical direction being the direction perpendicular to the quadrilateral formed by the first point, the second point, the third point, and the fourth point; the second elastic element is connected to the adjustment section and is configured to reset the coupling section;The locking component also includes a forced release component that is rigidly connected to the adjustment section, the forced release component being located on one side of the movable handle facing the user or facing away from the user.

[0026] With reference to Fig. Figures 1 to 10 represent embodiments of the present utility model, comprising a crimping tool 100, a movable plier head 20, a movable handle 30, and a locking component 40, wherein one end of the fastening element 10 forms a fastening plier head 11 and the other end forms a fastening handle 12. The movable plier head 20 is pivotally connected to the fastening element 10 at the first point 101, the first point 101 being located between the jaws 105 of the crimping tool 100 and the fastening handle 12. The movable handle 30 is pivotally connected to the movable plier head 20 at the second point 102. The locking component is connected to the movable handle 30 and the fastening element 10, with the connection point to the fastening element 10 being the third point 103 and the connection point to the movable handle 30 being the fourth point 104.

[0027] For better description, the crimping tool 100 is shown in Fig. 2 is used as a directional reference for the directional description; that is, the upper end of the crimping pliers 100 comprises the movable plier head 20 and the fastening plier head 11, while the lower end of the crimping pliers 100 comprises the fastening handle 12 and the movable handle 30. The left side of the crimping pliers 100 comprises the movable plier head 20 and a movable handle 30, while the right side of the crimping pliers 100 comprises a fastening element 10. The area between the two handles is the inside, and the side where the two handles are furthest apart is the outside. It is understood that the above directional indication serves only to simplify the following description and does not represent any further limitation for the crimping pliers 100.

[0028] The first point 101 is located approximately in the middle position of the movable plier head 20, the second point 102 is located to the left and below the first point 101, and the second point 102 refers to the lower end of the movable plier head 20 and the upper end of the movable handle 30, the third point 103 is located to the right and below the first point 101 and the second point 102 and is located approximately in the middle position of the fastening element 10, the fourth point 104 is located to the left of the third point 103 and below the second point 102.

[0029] When the user presses the fastening handle 12 and the movable handle 30, the lower end of the movable handle 30 rotates towards the fastening element 10, and the upper end of the movable handle 30 rotates in a direction away from the fastening element 10, thereby rotating the upper end of the movable plier head 20 in a direction towards the fastening plier head 11, and the jaws 105 close to clamp the workpiece.

[0030] In some embodiments, the movable plier head 20 is approximately triangular and consists of two superimposed sheet metal parts. The movable handle 30 also consists of two sheet metal parts. These two sheet metal parts are arranged vertically spaced apart and clamped to the movable plier head 20. A fastening element is located between the sheet metal parts to secure them together. The fastening element 10 can be a screw, a rivet, or a similar structure. Accordingly, the fastening element 10 is also formed from two sheet metal parts that are vertically spaced apart.

[0031] The locking component 40 comprises a coupling section 41, a first elastic element 42, an adjusting section 43, a second elastic element 44, and a forced release component 430. The coupling section 41 is pivotally connected to the fastening element 10 at a third point 103 and to the movable handle 30 at a fourth point 104, with the connecting lines linking the first point 101, the second point 102, the third point 103, and the fourth point 104 forming a quadrilateral. The first elastic element 42 is connected to the coupling section 41 and is configured to reset the coupling section 41. The adjusting section 43 is rotatably connected to the movable handle 30 and interacts with the coupling section 41 to limit outward rotation of the movable handle 30.The second elastic element 44 is connected to the adaptation section 43 and is configured to reset the coupling section 41.

[0032] Alternatively, both the first elastic element 42 and the second elastic element 44 are tension springs, with the upper end of the first elastic element 42 connected to the fastening element 10 and the lower end of the first elastic element 42 connected to the right end of the coupling section 41. It should be noted that the first elastic element 42 and the second elastic element 44 are not limited to tension springs; in some other embodiments, they may also be torsion springs or other structures capable of resetting the coupling section 41 and the adjusting section 43.

[0033] The coupling section 41 and the adjustment section 43 work together to prevent the jaws 105 from opening. When the coupling section 41 and the adjustment section 43 are disengaged, the first elastic element 42 and the second elastic element 44 can reset the coupling section 41 and the adjustment section 43, thereby automatically opening the jaws 105.

[0034] In some embodiments, the projection of the adjusting section 43 is located entirely within the projection of the movable handle 30 in the vertical direction. The vertical direction is the direction perpendicular to the quadrilateral formed by the first point 101, the second point 102, the third point 103, and the fourth point 104; it is also the direction perpendicular to the crimping pliers 100, which are located in Fig. 2 is shown.

[0035] It should be noted that the projection of the adjusting section 43 lies entirely within the projection of the movable handle 30, which means that the majority of the projection of the adjusting section 43 lies within the projection of the movable handle 30 and a small part lies outside the projection of the movable handle 30 when the adjusting section 43 is in the reset state and when the adjusting section 43 is in the locked rotation position.

[0036] The forced release component 430 is rigidly connected to the adjusting section 43 and is located on one side of the movable handle 30, facing either towards or away from the user. By rotating the release component 430, the adjusting section 43 can be set in motion, thereby achieving the purpose of forced release.

[0037] The forced release component 430 is exposed on the outer surface of the movable handle 30, specifically arranged on a user-facing side of the crimping pliers 100, or, in some embodiments, on a side of the crimping pliers 100 facing away from the user. This external arrangement allows the user to directly access the forced release component 430 with their thumb or index finger without the need for other tools, thereby enabling the user to easily rotate the adjusting section 43 to release the coupling between the adjusting section 43 and the coupling section 41. That is to say, the forced release of the crimping pliers 100 according to the present application is simpler and more convenient.

[0038] In some embodiments, the forced release component 430 is provided to include the following: a sleeve 4301; a lever 4302 which is arranged on the circumferential side of the sleeve 4301.

[0039] Specifically, the longitudinal direction of the lever 4302 and the direction of rotation of the sleeve 4301 form an angle. This angle can be set, for example, to 90 degrees or 45 degrees, as long as the movement of the lever 4302 is comfortable for the user; the present application does not provide for any specific limitations. The sleeve 4301 is rigidly connected to the coupling section 43, so that if the coupling section 43 and the connecting section 41 unintentionally engage or lock, the lever 4302 is rotated to rotate the sleeve 4301 and the coupling section 43 synchronously, thereby releasing the locking state of the coupling section 43 and the connecting section 41. The lever 4302 is located on one side of the movable handle 30, facing either towards or away from the user.

[0040] Specifically, the sleeve 4301 is cylindrical and has a circular cylinder; a rectangular hole is provided inside the sleeve 4301; a prism is formed at the tip of the adapting section 43, which adapts to the rectangular hole; the prism penetrates the rectangular hole and is connected to a clamping cap to limit the forced release component 430.

[0041] In some embodiments, the adapting section 43 and the coupling section 41 are interlocked so that the adapting section 43 and the coupling section 41 can rotate synchronously.

[0042] The adaptation section 43 comprises a column 4311, a engagement tooth 4312, and a connecting block 4313. The column 4311 is rotatably connected to the movable handle 30. The engagement tooth 4312 is connected to the column 4311 and adapted to the adaptation section 43. The connecting block 4313 is connected to the column 4311, with one end of the second elastic element 44 connected to the connecting block 4313 and the other end connected to the movable handle 30. The sleeve 4301 is placed on the projection at the upper end of the column 4311.

[0043] In some embodiments, the coupling section 41 is strip-shaped and is provided with several teeth 410 at its left end, the teeth 410 engage in the opposing teeth 4312, and an end of the coupling section 41 facing away from the teeth 410 is formed with a hole for fitting to the first elastic element 42.

[0044] In combination with Fig. In some embodiments, as described in figures 7 to 10, the crimping pliers 100 also comprise a plier component 50 located in the jaws 105, wherein the plier component 50 is detachably connected to at least one of the fastening plier heads 11 or the movable plier head 20. Alternatively, two plier components 50 are provided, one of which is detachably connected to the fastening plier head 11 and the other to the movable plier head 20. Furthermore, the two plier components 50 interact with each other to clamp the workpiece.

[0045] In some embodiments, at least one of the fastening pliers head 11 or the movable pliers head 20 is provided with a connecting groove 60, wherein the connecting groove 60 has a first end 601 and a second end 602. The pliers component 50 comprises a pliers section 51 and a connecting section 52. The pliers section 51 is located in the jaws 105 and is provided with a buckle groove 5111, which is directly opposite the first end 601 of the connecting groove 60. The connecting section 52 is arranged to penetrate through the connecting groove 60 and the buckle groove 5111 in order to connect the pliers section 51 to the corresponding fastening pliers head 11 or movable pliers head 20. The connecting section 52 can move to the second end 602 to disengage from the buckle groove 5111.

[0046] Specifically, both the fastening pliers head 11 and the movable pliers head 20 are provided with a connecting groove 60. When the connecting section 52 is located at the first end 601, and since the connecting section 52 is arranged to penetrate the buckle groove 5111 and the connecting groove 60, the pliers section 51 can be connected to the corresponding fastening pliers head 11 or the movable pliers head 20. When the connecting section 52 moves to the second end 602, and since it disengages from the buckle groove 5111, the pliers section 51 can detach from the corresponding pliers head.

[0047] The connecting section 52 is a structure that is larger at both ends and smaller in the middle, similar to a bolt with a nut or a bolt with a washer. The dimensions of the ends of the connecting section 52 are larger than the connecting groove 60, while the dimensions of the middle section are smaller than the connecting groove 60. Thus, the connecting section 52 can slide in the connecting groove 60 without disengaging from it. The buckle groove 5111 is an open groove, allowing the connecting section 52 to move into or out of the buckle groove 5111 as the connecting section moves within the connecting groove 60.

[0048] The pliers section 51 can be attached or removed by sliding the connecting section 52, and the process of attaching or removing the pliers section 51 is simple and quick.

[0049] In some embodiments, the longitudinal direction of the connecting groove 60 is inclined relative to the longitudinal direction of the jaws 105. This arrangement prevents the pliers section 51 from falling apart due to accidental contact.

[0050] In some embodiments, the connecting groove 60 has a fastening part 603 and a release part 604, wherein the first end 601 is located in the fastening part 603, the second end 602 is located in the release part 604, the buckle groove 5111 is directly opposite the fastening part 603, and along the width direction of the connecting groove 60, the fastening part 603 is larger than the release part 604.

[0051] When the connecting section 52 rotates into the appropriate position, it can slide between the fastening part 603 and the release part 604. If the connecting section 52 is not rotated into the appropriate position, it can only be located in the fastening part 603 and cannot move into the release part 604, thus further improving the stability of the connecting section 52 for fastening the clamping section 51.

[0052] In some embodiments, the fastening part 603 is circular, and the release part 604 has the form of a raceway. The central part of the connecting section 52 also has the form of a raceway, thus allowing the connecting section 52 to rotate within the fastening part 603. When it rotates into the position corresponding to the release part 604, it can slide towards the release part 604.

[0053] In some embodiments, the connecting section 52 comprises a connecting column 521 and two limiting ends 522. The connecting column 521 extends through the buckle groove 5111 and the connecting groove 60, and two limiting ends 522 are provided at both ends of the connecting column 521. When the connecting column 521 is at the first end 601, it can rotate, and once it has rotated into the appropriate position, it can move to the second end 602.

[0054] The area of ​​the limiting end 522 is larger than the area of ​​the connecting column 521; the two limiting ends 522 can be the same or different. If, for example, the connecting section 52 consists of a screw in conjunction with a washer or nut, one of the two limiting ends 522 can be the end of the screw and the other limiting end 522 a washer or nut. Alternatively, the connecting column 521 has the form of a raceway.

[0055] In some embodiments, the pliers section 51 has a mounting block 511 and a clamping block 512, the mounting block 511 and the clamping block 512 are connected to each other, the buckle groove 5111 is located on the mounting block 511, and the mounting block 511 is provided on the fastening pliers head 11 or the movable pliers head 20.

[0056] In summary, the embodiments of the present application provide a crimping tool 100. The external arrangement of the forced release component 430 allows the user easy access to this component, thus facilitating forced release. Furthermore, the ability to move the connecting section 52 allows for control of the fastening or loosening of the crimping section 51, thereby simplifying its replacement or disassembly.

[0057] The foregoing represents only specific embodiments of the present utility model; however, the scope of protection of the present utility model is not limited thereto. Any person familiar with the technical field can readily imagine various equivalent modifications or replacements, and these modifications and replacements should be covered by the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model should be subject to the scope of protection of the claims.

Claims

[1] Crimping pliers, characterized by , that the crimping pliers comprise a fastening element (10), a movable plier head (20), a movable handle (30) and a locking component (40), wherein one end of the fastening element (10) forms a fastening plier head (11) and the other end forms a fastening handle (12); wherein the movable plier head (20) and the fastening element (10) are hinged at the first point (101), the first point (101) being located between the jaws (105) of the crimping pliers (100) and the fastening handle (12); wherein the movable handle (30) and the movable plier head (20) are hinged at a second point (102); wherein the locking component (40) comprises the following: a coupling section (41) which is hinged at a third point (103) on the fastening element (10) and at a fourth point (104) on the movable handle (30), wherein the connecting lines connecting the first point (101), the second point (102), the third point (103) and the fourth point (104) form a quadrilateral; a first elastic element (42) connected to the coupling section (41) and configured to reset the coupling section (41); an adjustment section (43) rotatably connected to the movable handle (30) and adapted to the coupling section (41) to limit the outward rotation of the movable handle (30), wherein in the vertical direction the projection of the adjustment section (43) lies completely within the projection of the movable handle (30), the vertical direction being the direction perpendicular to the quadrilateral formed by the first point (101), the second point (102), the third point (103) and the fourth point (104); a second elastic element (44) connected to the adjustment section (43) and configured to reset the coupling section (41); wherein the locking component (40) also includes a forced release component (430) which is rigidly connected to the adjustment section (43), wherein the forced release component (430) is located on a side of the movable handle (30) which faces towards or away from a user. [2] Crimping pliers according to claim 1, characterized by , that the forced release component (430) comprises a sleeve (4301) and a lever (4302) arranged on one side of the sleeve (4301), wherein the sleeve (4301) is rigidly connected to the coupling section (43) to release the locking state of the two when the coupling section (43) and the coupling section (41) unexpectedly engage or jam; wherein the lever (4302) is located on one side of the movable handle (30) facing the user or away from the user. [3] Crimping tool according to one of claims 1 to 2, characterized by, that the adaptation section (43) includes the following: a column (4311) which is rotatably connected to the movable handle (30); a occlusal tooth (4312) which is connected to the column (4311) and adapted to the adaptation section (43); a connecting block (4313) which is connected to the column (4311), wherein one end of the second elastic element (44) is connected to the connecting block (4313) and the other end is connected to the movable handle (30). [4] Crimping pliers according to claim 1, characterized by , that the crimping pliers (100) also comprise a pliers component (50), wherein the pliers component (50) is located in the jaws (105), and wherein the pliers component (50) is detachably connected to at least one of the fastening pliers head (11) or the movable pliers head (20). [5] Crimping pliers according to claim 4, characterized by, that at least one of the fastening pliers head (11) or the movable pliers head (20) is provided with a connecting groove (60), wherein the connecting groove (60) has a first end (601) and a second end (602), wherein the pliers component (50) comprises the following: a pliers section (51) located in the jaws (105) and provided with a buckle groove (5111), the buckle groove (5111) being located directly opposite the first end (601); a connecting section (52) which is arranged penetrating through the connecting groove (60) and the buckle groove (5111) to connect the pliers section (51) to the corresponding fastening pliers head (11) or the movable pliers head (20), wherein the connecting section (52) can be moved to the second end (602) to release itself from the buckle groove (5111). [6] Crimping pliers according to claim 5, characterized by, that the longitudinal direction of the connecting groove (60) is inclined relative to the longitudinal direction of the jaws (105). [7] Crimping pliers according to claim 5, characterized by , that the connecting groove (60) has a fastening part (603) and a release part (604), wherein the first end (601) is located in the fastening part (603) and the second end (602) is located in the release part (604), wherein the buckle groove (5111) is located directly opposite the fastening part (603), wherein along the width direction of the connecting groove (60) the width of the fastening part (603) is greater than the width of the release part (604). [8] Crimping pliers according to claim 7, characterized by , that the shape of the fastening part (603) is round, wherein the shape of the release part (604) corresponds to that of a raceway. [9] Crimping pliers according to claim 5, characterized by , that the connecting section (52) comprises the following: a connecting column (521) which is arranged penetrating through the buckle groove (5111) and the connecting groove (60); a first limiting end (522) which is firmly connected to an end of the connecting column (521); a second limiting end (523) which is locked to the other end of the connecting column (521), wherein the connecting column (521) can rotate when it is at the first end (601) and can move to the second end (602) when it rotates into a corresponding position. [10] Crimping pliers according to claim 5, characterized by , that the pliers section (51) has a mounting block (511) and a pliers block (512), wherein the mounting block (511) is connected to the pliers block (512), wherein the buckle groove (5111) is located in the mounting block (511), and wherein the mounting block (511) is arranged on the fastening pliers head (11) or the movable pliers head (20).

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