Clamping structure of current terminal

Abstract

The utility model discloses a clamping structure of a current terminal, which comprises a terminal main body and a conducting strip arranged on the terminal main body, one surface of the conducting strip is provided with an accommodating groove for accommodating a wiring harness, and the other surface of the conducting strip is provided with a transmission structure connected with a grub screw; a movable clamping piece is arranged in the containing groove, the stress end of the clamping piece is connected with the extrusion end of the transmission structure so that the clamping piece can generate elastic deformation along with twisting of the screw and clamp the wire harness, and when the wire in the peeled wire harness is positioned, the wire is contained in the containing groove, the screw is twisted, and therefore the wire in the peeled wire harness can be clamped. When the electric wire is extruded, the extrusion end of the transmission structure extrudes the clamping piece, the clamping piece moves in the inner cavity of the storage groove, and the electric wire in the storage groove is clamped and positioned, so that the electric wire is prevented from being broken due to extrusion of the conducting strip.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology of current terminal, especially a clamping structure of current terminal. BACKGROUND

[0002] The current terminal is a special terminal used for connecting the current transformer to the instrument or relay in the electronic force system. Its main feature is convenient testing, which can disconnect and connect the circuit without disassembling the wire, thereby improving the convenience and safety of testing.

[0003] The current terminal is usually used for current measurement and monitoring in the power system. Through the connection with the current transformer, the current signal can be transmitted to the instrument or control system for analysis and processing.

[0004] When the current terminal used is a primary current terminal, the user clamps the electric wire bundle by twisting the screw to make the conductive sheet in the primary current terminal extrude. However, the electric wire bundle has different thicknesses. When the conductive sheet extrudes the thin electric wire, if the extrusion force is too large, the electric wire is easily broken. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a clamping structure of current terminal, which solves the problem that when the primary current terminal is used, the user clamps the electric wire bundle by twisting the screw to make the conductive sheet in the primary current terminal extrude. However, the electric wire bundle has different thicknesses. When the conductive sheet extrudes the thin electric wire, if the extrusion force is too large, the electric wire is easily broken.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a clamping structure of current terminal, comprising a terminal main body and a conductive sheet arranged on the terminal main body, one side of the conductive sheet is provided with a receiving groove for accommodating the electric wire bundle, and the other side is provided with a transmission structure connected with the flat head screw; a movable clamping piece is arranged in the receiving groove, and the stress end of the clamping piece is connected with the extrusion end of the transmission structure, so that the clamping piece is elastically deformed and clamps the electric wire bundle along with the twisting of the screw.

[0007] Further, the transmission structure comprises a slot arranged on the conductive sheet and connected with the flat head screw, and an elastic piece arranged in the inner cavity of the conductive sheet and corresponding to the slot, the elastic piece is connected with the clamping piece, and the extrusion end is located at the connection between the elastic piece and the clamping piece.

[0008] Further, the clamping piece is in the shape of a circular arc and comprises a first plate connected with the elastic piece, and a second plate and a third plate arranged at both ends of the first plate, and a receiving space for accommodating the electric wire bundle located between the first plate, the second plate and the third plate.

[0009] Further, one end of the second plate and the third plate is provided with a groove, and the other end is provided with an insertion piece, so that the insertion piece is inserted into the groove to reduce the storage space to clamp the wire harness.

[0010] Further, the receiving groove is recessed in the lower end surface of the conductive sheet, and the receiving groove is penetrated out from the side edge of the conductive sheet away from the terminal body, so that the wire harness is inserted into the receiving groove.

[0011] Further, the receiving groove is in a circular arc shape, and the two opposite side edges of the receiving groove are provided with traction pieces, which are in an arc shape and close to the center of the receiving groove.

[0012] Further, the elastic member is in an arc shape and is installed in the cavity in the inner cavity of the conductive sheet, and the clamping part is partially inserted into the cavity and connected with the recessed surface of the elastic member.

[0013] Further, the middle part of the convex surface of the elastic member corresponds to the insertion slot, and the insertion slot is a threaded slot.

[0014] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically, according to the above technical scheme, when the wire in the wire harness after peeling is positioned, the wire is stored in the receiving groove, and the screw is twisted, so that the extrusion end of the transmission structure extrudes the clamping part, the clamping part moves in the inner cavity of the receiving groove, and the wire in the receiving groove is clamped and positioned, so that the wire is prevented from being broken due to the extrusion of the conductive sheet.

[0015] In order to more clearly illustrate the structural features and effects of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments. DRAWINGS

[0016] Figure 1 It is the perspective view of embodiment 1 of the utility model.

[0017] Figure 2 It is the side view of the conductive sheet of embodiment 1 of the utility model.

[0018] Figure 3 It is the cross-sectional view of the conductive sheet of embodiment 1 of the utility model.

[0019] Figure 4 It is the A place of embodiment 1 of the utility model. Figure 3 Enlarged view.

[0020] Explanation of figure mark:

[0021] 10 terminal body;

[0022] 20 conductive sheet, 21 receiving groove, 211 traction piece, 22 transmission structure, 221 extrusion end, 222 elastic member, 223 insertion slot, 23 cavity;

[0023] 30 Clamping component, 31 First plate, 32 Second plate, 321 Groove, 33 Third plate, 331 Insert, 34 Storage space. Detailed Implementation

[0024] Please refer to Figures 1-4 As shown, this illustrates the specific structure of a preferred first embodiment of the present invention, which is a clamping structure for a current terminal. The structure includes a terminal body 10 and a conductive sheet 20 disposed on the terminal body 10. One side of the conductive sheet 20 has a receiving groove 21 for accommodating a wire bundle, and the other side has a transmission structure 22 connected to a flat-head screw. A movable clamping member 30 is disposed within the receiving groove 21. The force-bearing end of the clamping member 30 is connected to the pressing end 221 of the transmission structure 22, so that the clamping member 30 undergoes elastic deformation with the twisting of the screw and clamps the wire bundle. When positioning the wires in the stripped wire bundle, by receiving the wires in the receiving groove 21 and by twisting the screw, the pressing end 221 of the transmission structure 22 presses the clamping member 30, causing the clamping member 30 to move within the cavity of the receiving groove 21 and clamping and positioning the wires within the receiving groove 21, thus preventing the wires from breaking due to the compression of the conductive sheet 20.

[0025] like Figure 3 As shown, exemplarily, the transmission structure 22 includes a slot 223 on the conductive sheet 20 connected to a flat-head screw, and an elastic member 222 in the inner cavity of the conductive sheet 20 corresponding to the slot 223. The elastic member 222 is connected to the clamping member 30, and the pressing end 221 is located at the connection between the elastic member 222 and the clamping member 30. When the screw twists in the inner cavity of the slot 223 and abuts against the elastic member 222, the elastic member 222 is compressed and displaced, pushing the clamping member 30 to move within the receiving groove 21 and clamping the wire in the receiving groove 21.

[0026] like Figure 4 As shown, exemplarily, the clamping member 30 is arc-shaped and includes a first plate 31 connected to the elastic member 222, a second plate 32 and a third plate 33 disposed at both ends of the first plate 31, and a storage space 34 located between the first plate 31, the second plate 32 and the third plate 33 for storing the wire harness. The upper half of the first plate 31 is connected to the elastic member 222, so that when the elastic member 222 squeezes the first plate 31, the second plate 32 and the third plate 33 located at both ends of the first plate 31 move closer to each other under the pressure, thereby clamping the wire harness in the storage groove 21.

[0027] For example, at the end where the second plate 32 and the third plate 33 are close together, one has a groove 321 and the other has an insert 331, so that the insert 331 is inserted into the groove 321 to reduce the storage space 34 to clamp the wire bundle. To enable the second plate 32 and the third plate 33 to clamp the wire, a groove 321 is provided on the second plate 32, and an integrally formed insert 331 is provided on the third plate 33. As the second plate 32 and the third plate 33 move closer together, the insert 331 is inserted into the cavity of the groove 321. After the insert 331 is inserted into the groove 321, the portion of the insert 331 and the third plate 33 with the groove 321 forms an X shape, and the wire bundle is located in the cavity between the X shapes. At this time, as the second plate 32 and the third plate 33 move closer together, the insert 331 and the third plate 33 push the wire to move within the storage space 34 and move closer to the first plate 31, thereby forming a clamping and positioning of the wire bundle.

[0028] The receiving groove 21 is recessed into the lower end face of the conductive sheet 20, and the receiving groove 21 extends out from the side edge of the conductive sheet 20 away from the terminal body 10, so that the power supply cable harness can be inserted into the receiving groove 21.

[0029] like Figure 4 As shown, for example, the storage slot 21 is arc-shaped, and traction plates 211 are provided on two opposite side edges of the storage slot 21. The traction plates 211 are arc-shaped and move towards the center of the storage slot 21. By traction plates 211 pulling the second plate 32 and the third plate 33, when the first plate 31 is compressed, the opposite ends of the second plate 32 and the third plate 33 can move towards the center of the storage space 34, so that the second plate 32 and the third plate 33 can clamp the wires in the storage slot 21.

[0030] like Figure 4 As shown, exemplarily, the elastic element 222 is arc-shaped and installed in the cavity 23 opened in the inner cavity of the conductive sheet 20. The clamping element 30 extends into the cavity 23 and is connected to the concave surface of the elastic element 222. The elastic element 222 is an arc-shaped plate. The two ends of the arc-shaped plate are fixed to the bottom wall of the cavity 23, and the middle part is raised. When the screw abuts against the arc-shaped plate, the raised surface of the middle part of the arc-shaped plate moves towards the receiving groove 21 under the pressure of the screw, thereby pushing the first plate 31 to press the second plate 32 and the third plate 33, so that the insert 331 and the groove 321 on the second plate 32 are inserted into each other, thereby pressing the wires in the receiving groove 21.

[0031] The center of the protruding surface of the elastic element 222 corresponds to the slot 223, and the slot 223 is a threaded groove. Because the slot 223 is a screw groove, the screw that is turned into the slot 223 cannot reset its contact with the elastic element 222, thus ensuring that the wires held by the insert 331 and the second plate 32 will not easily separate from the conductive plate 20.

[0032] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A clamping structure of an electric current terminal, comprising a terminal main body (10) and a conductive sheet (20) provided on the terminal main body (10), characterized in that: The conductive sheet (20) is provided with a receiving groove (21) for accommodating the wire bundle on one side and a transmission structure (22) connected with the flat head screw on the other side; the receiving groove (21) is provided with a movable clamping piece (30), and the stress end of the clamping piece (30) is connected with the extrusion end (221) of the transmission structure (22) so that the clamping piece (30) is elastically deformed and clamps the wire bundle when the screw is twisted.

2. The clamping structure of a current terminal according to claim 1, characterized in that: The transmission structure (22) comprises a slot (223) provided on the conductive sheet (20) and connected with the flat head screw and an elastic piece (222) provided in the inner cavity of the conductive sheet (20) and corresponding to the slot (223), the elastic piece (222) is connected with the clamping piece (30), and the extrusion end (221) is located at the connection between the elastic piece (222) and the clamping piece (30).

3. The clamping structure of a current terminal according to claim 2, characterized in that: The clamping piece (30) is in the shape of a circular arc and comprises a first plate (31) connected with the elastic piece (222), a second plate (32) and a third plate (33) provided at both ends of the first plate (31), and a receiving space (34) for accommodating the wire bundle between the first plate (31), the second plate (32) and the third plate (33).

4. The clamping structure of a current terminal according to claim 3, characterized in that: The second plate (32) and the third plate (33) are provided with a groove (321) on one end and a plug (331) on the other end, so that the plug (331) is inserted into the groove (321) to reduce the receiving space (34) and clamp the wire bundle.

5. The clamping structure of a current terminal according to claim 1, characterized in that: The receiving groove (21) is recessed in the lower end surface of the conductive sheet (20), and the receiving groove (21) penetrates out of the side edge of the conductive sheet (20) away from the terminal body (10) to allow the wire bundle to be inserted into the receiving groove (21).

6. The clamping structure of a current terminal according to claim 5, characterized in that: The receiving groove (21) is in the shape of a circular arc, and the two opposite side edges of the receiving groove (21) are provided with a traction piece (211), which is in the shape of an arc and converges towards the center of the receiving groove (21).

7. The clamping structure of a current terminal according to claim 2, characterized by: The elastic piece (222) is in the shape of an arc and is installed in the accommodating cavity (23) provided in the inner cavity of the conductive sheet (20), and the clamping piece (30) partially extends into the accommodating cavity (23) and is connected with the recessed surface of the elastic piece (222).

8. The clamping structure of a current terminal according to claim 7, characterized in that: The protruding surface of the elastic piece (222) is provided with a threaded slot (223) in the middle.

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