Electric crimping pliers

Abstract

The electric crimping pliers are provided with a pliers head assembly, which includes a movable pliers arm, a fixed pliers arm, a movable pliers head, and a fixed pliers head. The movable pliers arm and the fixed pliers arm are opened and closed in a swinging manner, the movable pliers head is mounted on the movable pliers arm, and the fixed pliers head is mounted on the fixed pliers arm. The electric crimping pliers optimizes the pliers head mounting structure so that the thicker part of the pliers arm provides support force to the pliers head, thereby preventing the thinner part of the pliers arm from being deformed by force, and can apply a greater force to each pliers head to complete a higher intensity operation task.

Description

Technical Field

[0001] The utility model relates to an electric wire crimping pliers. Background Art

[0002] Electric crimping pliers can be used for cable connection and terminal assembly. The electric crimping pliers are provided with a pliers head assembly, and a pliers head is detachably mounted on the pliers arm of the pliers head assembly. The pliers head is used to directly contact the cable or terminal and act on the structure of the cable or terminal. In the prior art, the pliers head is mounted on the pliers arm by bolts, and two parallel mounting plate structures are arranged on the pliers arm. The through area between the two mounting plates is used to accommodate the pliers head. The cross section of the pliers head is T-shaped, and the two sides of the pliers head are provided with limiting recesses corresponding to the mounting plates. After installation, the end face of the mounting plate is in the limiting recess of the pliers head and the end face of the mounting plate is connected to the pliers head. In the use state, the end face of the mounting plate provides support force to the pliers head. Since the thickness of the mounting plate is restricted by the thickness of the pliers arm, this is because the design habit of the pliers arm in the prior art makes the overall shape of the pliers arm designed to be smoother, and there will be no protruding structure somewhere to obtain the purpose of thickening. Therefore, after the pliers arm obtains space for installing the pliers head between the mounting plates, the thickness of the mounting plate obtained will be thinner. When the electric crimping pliers are used, the mounting plate must provide the corresponding support force when the pliers are subjected to external forces. The thin mounting plate can only provide limited support force. Therefore, after long-term use, especially when subjected to large external forces, there is a risk of deformation of the mounting plate. Once the mounting plate is deformed, the inherent working position of the pliers will change, and the two pliers will not be able to close normally, and the electric crimping pliers will lose their use value. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to prevent the deformation of the clamp arm, thereby obtaining an electric wire crimping pliers.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: the electric crimping pliers are provided with a pliers head assembly, the pliers head assembly includes a movable pliers arm, a fixed pliers arm, a movable pliers head, and a fixed pliers head. The movable pliers arm and the fixed pliers arm are opened and closed in a swinging manner. The movable pliers head is installed on the movable pliers arm, and the fixed pliers head is installed on the fixed pliers arm. The movable pliers arm is provided with a limiting surface I, a mounting groove I and a screw hole I. The extension direction of the limiting surface I and the extension direction of the mounting groove I are the same as the extension direction of the movable pliers arm. The screw hole I is located on both sides of the mounting groove I, the mounting groove I is connected with the screw hole I, the limiting surface I is located inside the mounting groove I, and the center line of the screw hole I is parallel to the limiting surface I. The movable pliers head is provided with a connecting part I, the cross section of the connecting part I is an isosceles trapezoid, the height of the connecting part I is greater than the depth of the mounting groove I, the connecting part I is embedded in the mounting groove I, and the movable pliers head and The movable clamp arms are fixedly connected by bolts, the bolts are screwed into screw holes Ⅰ and pass through connecting parts Ⅰ, the top surface of connecting parts Ⅰ is connected to the limiting surface Ⅰ, the fixed clamp arm is provided with limiting surface Ⅱ, mounting groove Ⅱ and screw holes Ⅱ, the extension direction of limiting surface Ⅱ and the extension direction of mounting groove Ⅱ are the same as the extension direction of the fixed clamp arm, the screw holes Ⅱ are located on both sides of the mounting groove Ⅱ, the mounting groove Ⅱ is connected with screw holes Ⅱ, the limiting surface Ⅱ is located inside the mounting groove Ⅱ, the center line of the screw holes Ⅱ is parallel to the limiting surface Ⅱ, the fixed clamp head is provided with a connecting part Ⅱ, the cross-section of the connecting part Ⅱ is an isosceles trapezoid, the height of the connecting part Ⅱ is greater than the depth of the mounting groove Ⅱ, the connecting part Ⅱ is embedded in the mounting groove Ⅱ, the fixed clamp head and the fixed clamp arm are fixedly connected by bolts, the bolts are screwed into screw holes Ⅱ and pass through connecting parts Ⅱ, the top surface of the connecting part Ⅱ is connected to the limiting surface Ⅱ.

[0005] The degree of closure of the installation grooves, i.e., installation grooves I and II, in the present technical solution is greater than the through-type area between the two installation plates in the prior art. The depth of the installation grooves is less than the height of the connection parts, i.e., connection parts I and connection parts II. After installation, the limit surface I on the movable clamp arm provides support force to the connection part I, and the limit surface II on the fixed clamp arm provides support force to the connection part II. In this way, the structures on both sides of the installation grooves only need to provide a limiting effect, avoiding the design requirement of providing support force to the connection parts, otherwise there will be deformation problems like the prior art. Whether it is the movable clamp arm or the fixed clamp arm, the thickness of their respective limit surfaces is sufficient to ensure that they have strong mechanical strength. Therefore, through such a connection method, the problem of deformation of the clamp arm can be completely avoided, and a greater force can be applied to each clamp head to complete a higher-intensity task.

[0006] In this technical solution, the movable clamp head and the fixed clamp head are installed in a detachable manner, which brings obvious competitive advantages to the electric crimping pliers. First, any clamp head, that is, the movable clamp head or the fixed clamp head, can be replaced by disassembly and assembly when it is damaged, avoiding the situation where the entire machine is eliminated when the clamp head is damaged, thereby reducing maintenance costs. Secondly, the electric crimping pliers can include multiple groups of various types of clamp heads, and the functions of each group of clamp heads are different to meet different work requirements. In any use state, only one group of clamp heads is installed on the clamp arm, and the functions of the electric crimping pliers are diversified.

[0007] When the electric crimping pliers are configured with a pliers head suitable for a certain working requirement, the preferred structure of the movable pliers head and the fixed pliers head can be that the fixed pliers head is provided with an upper notch corresponding to the contour of the front side of the network cable connector, the movable pliers head is provided with a lower notch corresponding to the contour of the back side of the network cable connector, the fixed pliers head is provided with two upper notches, the fixed pliers head is provided with a transverse limiting protrusion I and a longitudinal limiting protrusion I in one of the upper notches, the fixed pliers head is provided with a transverse limiting protrusion II, a longitudinal limiting protrusion II, and an extrusion protrusion at the other upper notch, the length of the transverse limiting protrusion I is less than the length of the transverse limiting protrusion II, the length of the longitudinal limiting protrusion I is equal to the length of the longitudinal limiting protrusion II, the extrusion protrusions are arranged straightly at equal intervals, the arrangement direction of the extrusion protrusions is parallel to the transverse limiting protrusion II, the movable pliers head is provided with two lower notches, and the cross-section of the lower notch is an inverted convex shape.

[0008] When the electric wire crimping pliers are configured with a pliers head suitable for another working requirement, the preferred structure of the movable pliers head and the fixed pliers head can be that the movable pliers head is provided with lower V-shaped notches, the lower V-shaped notches are arranged at equal intervals in the extension direction of the movable pliers arm and the width of each lower V-shaped notch decreases in the extension direction of the movable pliers arm, and the fixed pliers head is provided with upper V-shaped notches, the upper V-shaped notches are arranged at equal intervals in the extension direction of the fixed pliers arm and the width of each upper V-shaped notch decreases in the extension direction of the fixed pliers arm.

[0009] When the electric wire crimping pliers are configured to meet another type of work requirement, the preferred structure of the movable pliers head and the fixed pliers head can be that the movable pliers head is provided with lower W-shaped recesses, the lower W-shaped recesses are arranged at equal intervals in the extension direction of the movable pliers arm and the width of each lower W-shaped recess decreases in the extension direction of the movable pliers arm, and the fixed pliers head is provided with upper W-shaped recesses, the upper W-shaped recesses are arranged at equal intervals in the extension direction of the fixed pliers arm and the width of each upper W-shaped recess decreases in the extension direction of the fixed pliers arm.

[0010] When the electric crimping pliers are equipped with pliers heads suitable for three working requirements, each group of pliers heads can be replaced on the pliers arm by disassembly and assembly, and only play the function of meeting one working requirement during the use stage. In this way, the preferred structure of the movable pliers head and the fixed pliers head can be that the fixed pliers head is provided with an upper recess corresponding to the contour of the front side of the network cable connector, the movable pliers head is provided with a lower recess corresponding to the contour of the back side of the network cable connector, the fixed pliers head is provided with two upper recesses, the fixed pliers head is provided with a transverse limiting protrusion I and a longitudinal limiting protrusion I in one of the upper recesses, and the fixed pliers head is provided with a transverse limiting protrusion II, a longitudinal limiting protrusion II, and an extrusion protrusion at the other upper recess, the length of the transverse limiting protrusion I is less than the length of the transverse limiting protrusion II, the length of the longitudinal limiting protrusion I is equal to the length of the longitudinal limiting protrusion II, the extrusion protrusions are arranged straightly with equal spacing, and the arrangement direction of the extrusion protrusions is parallel Regarding the lateral limiting protrusion II, two lower recesses are provided on the movable pliers head, and the cross-section of the lower recesses is an inverted convex shape, or, the movable pliers head is provided with a lower V-shaped recess, the lower V-shaped recesses are arranged at equal intervals in the extension direction of the movable pliers arm and the width of each lower V-shaped recess decreases in the extension direction of the movable pliers arm, and the fixed pliers head is provided with an upper V-shaped recess, the upper V-shaped recesses are arranged at equal intervals in the extension direction of the fixed pliers arm and the width of each upper V-shaped recess decreases in the extension direction of the fixed pliers arm, or, the movable pliers head is provided with a lower W-shaped recess, the lower W-shaped recesses are arranged at equal intervals in the extension direction of the movable pliers arm and the width of each lower W-shaped recess decreases in the extension direction of the movable pliers arm, and the fixed pliers head is provided with an upper W-shaped recess, the upper W-shaped recesses are arranged at equal intervals in the extension direction of the fixed pliers arm and the width of each upper W-shaped recess decreases in the extension direction of the fixed pliers arm.

[0011] The utility model adopts the above technical solution: the electric wire crimping pliers optimize the pliers head installation structure so that the thicker part of the pliers arm provides support force to the pliers head, avoiding the deformation of the thinner part of the pliers arm due to force, and can apply greater force to each pliers head to complete higher intensity work tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 It is a structural schematic diagram of a clamp head assembly of an electric crimping pliers of the utility model;

[0014] Figure 2 It is a schematic diagram of assembling a fixed clamp head and a fixed clamp arm of a clamp head assembly of an electric crimping pliers according to the utility model;

[0015] Figure 3 It is a schematic diagram of assembling a movable clamp head and a movable clamp arm of a clamp head assembly of an electric wire crimping pliers according to the utility model;

[0016] Figure 4 It is a structural schematic diagram of a movable clamp head and a fixed clamp head provided with a V-shaped notch of a clamp head assembly of an electric crimping pliers of the utility model;

[0017] Figure 5 The utility model is a schematic structural diagram of a movable clamp head and a fixed clamp head provided with a W-shaped notch of a clamp head assembly of an electric wire crimping pliers. DETAILED DESCRIPTION

[0018] The first embodiment of the utility model.

[0019] like Figure 1 , 2 As shown in Figures 3 and 4, the electric crimping pliers are provided with a clamp head assembly. The clamp head assembly includes a movable clamp arm 1, a fixed clamp arm 2, a movable clamp head 3, and a fixed clamp head 4. The movable clamp arm 1 and the fixed clamp arm 2 are opened and closed in a swinging manner, the movable clamp head 3 is installed on the movable clamp arm 1 in a detachable manner, and the fixed clamp head 4 is installed on the fixed clamp arm 2 in a detachable manner.

[0020] The movable pliers arm 1 is provided with a limiting surface Ⅰ5, a mounting groove Ⅰ6 and a screw hole Ⅰ8. The extension direction of the limiting surface Ⅰ5 and the extension direction of the mounting groove Ⅰ6 are the same as the extension direction of the movable pliers arm 1; the screw hole Ⅰ8 is located on both sides of the mounting groove Ⅰ6, and the mounting groove Ⅰ6 is connected with the screw hole Ⅰ8; the limiting surface Ⅰ5 is located inside the mounting groove Ⅰ6 and at the bottom of the mounting groove Ⅰ6, and the center line of the screw hole Ⅰ8 is parallel to the limiting surface Ⅰ5. The movable pliers head 3 is provided with a connecting part Ⅰ7, and the cross section of the connecting part Ⅰ7 is an isosceles trapezoid, and its contour features correspond to the contour features of the mounting groove Ⅰ6. Since the height of the connecting part Ⅰ7 is greater than the depth of the mounting groove Ⅰ6, the connecting part Ⅰ7 is embedded in the mounting groove Ⅰ6 during installation; the bolt is screwed into the screw hole Ⅰ8, and the connecting part Ⅰ7 is provided with a through hole, and the bolt passes through the through hole, so that the movable pliers head 3 and the movable pliers arm 1 are fixedly connected by bolts. After installation, the top surface of the connection part Ⅰ7 is connected to the limiting surface Ⅰ5, and the movable clamp arm 1 is connected to the movable clamp head 3 in a surface connection manner.

[0021] The fixed clamp arm 2 is provided with a limiting surface Ⅱ9, a mounting groove Ⅱ10 and a screw hole Ⅱ11. The extension direction of the limiting surface Ⅱ9 and the extension direction of the mounting groove Ⅱ10 are the same as the extension direction of the fixed clamp arm 2; the screw hole Ⅱ11 is located on both sides of the mounting groove Ⅱ10, the mounting groove Ⅱ10 is connected with the screw hole Ⅱ11, the limiting surface Ⅱ9 is located inside the mounting groove Ⅱ10 and at the bottom of the mounting groove Ⅱ10, and the center line of the screw hole Ⅱ11 is parallel to the limiting surface Ⅱ9. The fixed clamp head 4 is provided with a connecting part Ⅱ12, the cross section of the connecting part Ⅱ12 is an isosceles trapezoid, and its contour features correspond to the contour features of the mounting groove Ⅱ10. Since the height of the connecting part Ⅱ12 is greater than the depth of the mounting groove Ⅱ10, the connecting part Ⅱ12 is embedded in the mounting groove Ⅱ10 during installation; the bolt is screwed into the screw hole Ⅱ11, and the connecting part Ⅱ12 is provided with a through hole, and the bolt passes through the through hole, so that the fixed clamp head 4 and the fixed clamp arm 2 are fixedly connected by bolts. After installation, the top surface of the connection part II12 is connected to the limiting surface II9, and the fixed clamp arm 2 is connected to the fixed clamp head 4 in a surface connection manner.

[0022] In this embodiment, the electric crimping pliers are equipped with three groups of pliers heads, and only one group of pliers heads is installed on the pliers arm when in use. In one group, the fixed pliers head 4 is provided with an upper notch 13 corresponding to the outline of the front side of the network cable connector, and a lower notch 14 corresponding to the outline of the back side of the network cable connector. The fixed pliers head 4 is provided with two upper notches 13; the fixed pliers head 4 is provided with a transverse limiting protrusion Ⅰ15 and a longitudinal limiting protrusion Ⅰ16 in one of the upper notches 13, and the fixed pliers head 4 is provided with a transverse limiting protrusion Ⅱ17, a longitudinal limiting protrusion Ⅱ18, and a squeezing protrusion 19 at the other upper notch 13, the length of the transverse limiting protrusion Ⅰ15 is less than the length of the transverse limiting protrusion Ⅱ17, and the length of the longitudinal limiting protrusion Ⅰ16 is equal to the length of the longitudinal limiting protrusion Ⅱ18. The squeezing protrusions 19 are arranged straightly at equal intervals, and the arrangement direction of the squeezing protrusions 19 is parallel to the transverse limiting protrusion Ⅱ17. The movable clamp head 3 is provided with two lower notches 14, and the cross section of the lower notches 14 is an inverted convex shape. After installation, each lower notch 14 corresponds to an upper notch 13. This set of clamp heads is suitable for the installation of network cable connectors, i.e., crystal plugs. In another set, such as Figure 4 As shown, the movable pliers head 3 is provided with lower V-shaped notches 20, which are arranged at equal intervals in the extension direction of the movable pliers arm 1 and the width of each lower V-shaped notch 20 decreases in the extension direction of the movable pliers arm 1; the fixed pliers head 4 is provided with upper V-shaped notches 21, which are arranged at equal intervals in the extension direction of the fixed pliers arm 2 and the width of each upper V-shaped notch 21 decreases in the extension direction of the fixed pliers arm 2. After installation, each lower V-shaped notch 20 corresponds to an upper V-shaped notch 21. This set of pliers heads is suitable for wiring operations of thinner cables. In the remaining set, as Figure 5As shown, the movable clamp head 3 is provided with lower W-shaped notches 22, which are arranged at equal intervals in the extension direction of the movable clamp arm 1 and the width of each lower W-shaped notch 22 decreases in the extension direction of the movable clamp arm 1; the fixed clamp head 4 is provided with upper W-shaped notches 23, which are arranged at equal intervals in the extension direction of the fixed clamp arm 2 and the width of each upper W-shaped notch 23 decreases in the extension direction of the fixed clamp arm 2. After installation, each lower W-shaped notch 22 corresponds to an upper W-shaped notch 23. This set of clamp heads is suitable for wiring operations of thicker cables.

[0023] The second embodiment of the utility model is different from the first embodiment in that the electric crimping pliers are equipped with a set of pliers heads, and the fixed pliers head is provided with an upper notch corresponding to the outline of the front of the network cable connector, and a lower notch corresponding to the outline of the back of the network cable connector. The fixed pliers head is provided with two upper notches; the fixed pliers head is provided with a transverse limit protrusion I and a longitudinal limit protrusion I in one of the upper notches, and the fixed pliers head is provided with a transverse limit protrusion II, a longitudinal limit protrusion II, and an extrusion protrusion at the other upper notch, the length of the transverse limit protrusion I is less than the length of the transverse limit protrusion II, and the length of the longitudinal limit protrusion I is equal to the length of the longitudinal limit protrusion II. The extrusion protrusions are arranged straightly at equal intervals, and the arrangement direction of the extrusion protrusions is parallel to the transverse limit protrusion II. The movable pliers head is provided with two lower notches, and the cross section of the lower notch is an inverted convex shape. After installation, each lower notch corresponds to an upper notch.

[0024] The third embodiment of the utility model is different from the first embodiment in that the electric crimping pliers are equipped with a group of pliers heads, the movable pliers head is provided with lower V-shaped notches, the lower V-shaped notches are arranged at equal intervals in the extension direction of the movable pliers arm and the width of each lower V-shaped notch decreases in the extension direction of the movable pliers arm; the fixed pliers head is provided with upper V-shaped notches, the upper V-shaped notches are arranged at equal intervals in the extension direction of the fixed pliers arm and the width of each upper V-shaped notch decreases in the extension direction of the fixed pliers arm. After installation, each lower V-shaped notch corresponds to an upper V-shaped notch.

[0025] The fourth embodiment of the utility model is different from the first embodiment in that the electric crimping pliers are equipped with a group of pliers heads, the movable pliers head is provided with lower W-shaped notches, the lower W-shaped notches are arranged at equal intervals in the extension direction of the movable pliers arm and the width of each lower W-shaped notch decreases in the extension direction of the movable pliers arm; the fixed pliers head is provided with upper W-shaped notches, the upper W-shaped notches are arranged at equal intervals in the extension direction of the fixed pliers arm and the width of each upper W-shaped notch decreases in the extension direction of the fixed pliers arm. After installation, each lower W-shaped notch corresponds to an upper W-shaped notch.

Claims

1. An electric crimping pliers, the electric crimping pliers having a pliers head assembly, the pliers head assembly comprising a movable pliers arm (1), a fixed pliers arm (2), a movable pliers head (3), and a fixed pliers head (4), the movable pliers arm (1) and the fixed pliers arm (2) opening and closing in a swinging manner, the movable pliers head (3) being mounted on the movable pliers arm (1), and the fixed pliers head (4) being mounted on the fixed pliers arm (2), characterized in that: The movable pliers arm (1) is provided with a limiting surface I (5), a mounting groove I (6) and a screw hole I (8); the extension direction of the limiting surface I (5) and the extension direction of the mounting groove I (6) are the same as the extension direction of the movable pliers arm (1); the screw hole I (8) is located on both sides of the mounting groove I (6); the mounting groove I (6) is connected to the screw hole I (8); the limiting surface I (5) is located inside the mounting groove I (6); the center line of the screw hole I (8) is parallel to the limiting surface I (5); the movable pliers head ( 3) is provided with a connecting portion I (7), the cross section of the connecting portion I (7) is an isosceles trapezoid, the height of the connecting portion I (7) is greater than the depth of the mounting groove I (6), the connecting portion I (7) is embedded in the mounting groove I (6), the movable clamp head (3) and the movable clamp arm (1) are fixedly connected by bolts, the bolts are screwed into the screw holes I (8) and the bolts pass through the connecting portion I (7), the top surface of the connecting portion I (7) is connected to the limit surface I (5), the fixed clamp arm (2) is A limiting surface II (9), a mounting groove II (10) and a screw hole II (11) are provided. The extending direction of the limiting surface II (9) and the extending direction of the mounting groove II (10) are the same as the extending direction of the fixed clamp arm (2). The screw hole II (11) is located on both sides of the mounting groove II (10). The mounting groove II (10) is connected to the screw hole II (11). The limiting surface II (9) is located inside the mounting groove II (10). The center line of the screw hole II (11) is parallel to the limiting surface II (9). The fixed clamp head ( 4) is provided with a connection part II (12), the cross section of the connection part II (12) is an isosceles trapezoid, the height of the connection part II (12) is greater than the depth of the mounting groove II (10), the connection part II (12) is embedded in the mounting groove II (10), the fixed clamp head (4) and the fixed clamp arm (2) are fixedly connected by bolts, the bolts are screwed into the screw holes II (11) and the bolts pass through the connection part II (12), and the top surface of the connection part II (12) is connected to the limit surface II (9).

2. The electric crimping pliers according to claim 1, characterized in that: The fixed clamp head (4) is provided with an upper notch (13) corresponding to the contour of the front side of the network cable connector, and the movable clamp head (3) is provided with a lower notch (14) corresponding to the contour of the back side of the network cable connector. The fixed clamp head (4) is provided with two upper notches (13), and the fixed clamp head (4) is provided with a transverse limiting protrusion I (15) and a longitudinal limiting protrusion I (16) in one of the upper notches (13), and the fixed clamp head (4) is provided with a transverse limiting protrusion II (17) and a longitudinal limiting protrusion II (16) in the other upper notch (13). The movable pliers head (3) comprises a plurality of lower notches (14), a plurality of lower notches (14), and a plurality of lower notches (14). ...

3. The electric crimping pliers according to claim 1, characterized in that: The movable pliers head (3) is provided with lower V-shaped notches (20), the lower V-shaped notches (20) are arranged at equal intervals in the extension direction of the movable pliers arm (1), and the width of each lower V-shaped notch (20) decreases in the extension direction of the movable pliers arm (1); the fixed pliers head (4) is provided with upper V-shaped notches (21), the upper V-shaped notches (21) are arranged at equal intervals in the extension direction of the fixed pliers arm (2), and the width of each upper V-shaped notch (21) decreases in the extension direction of the fixed pliers arm (2).

4. The electric crimping pliers according to claim 1, characterized in that: The movable pliers head (3) is provided with lower W-shaped notches (22), the lower W-shaped notches (22) are arranged at equal intervals in the extension direction of the movable pliers arm (1), and the width of each lower W-shaped notch (22) decreases in the extension direction of the movable pliers arm (1); the fixed pliers head (4) is provided with upper W-shaped notches (23), the upper W-shaped notches (23) are arranged at equal intervals in the extension direction of the fixed pliers arm (2), and the width of each upper W-shaped notch (23) decreases in the extension direction of the fixed pliers arm (2).

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