A composite terminal

Abstract

The present invention relates to a composite terminal, comprising a wiring bracket, a spring sheet, a rotating shaft, a wiring baffle and an actuator, wherein the actuator comprises a screw, a fixing bracket and a sliding block, wherein the fixing bracket is connected to the wiring bracket, a limiting slot is provided on the fixing bracket, an annular groove is provided on the screw, the screw passes through the limiting slot so that the annular groove and the limiting slot are interlocked with each other, and the screw can rotate in the limiting slot, the sliding block is mounted on the screw and is threadedly connected to the screw, the sliding block moves along the axial direction of the screw as the screw rotates, the sliding block pushes the arm end on the other side of the spring sheet so that the spring sheet rotates, and the elastic arm end can press the inserted external wire during the rotation process. Compared with the prior art, the present invention overcomes the problem that the screw and nut structure is easy to fall off, and the longitudinal length in the wiring bracket is too large.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker accessories, and in particular to a composite wiring terminal. Background Art

[0002] In order to connect the main circuit and the external circuit, the circuit breaker is generally provided with a terminal block to connect with the external wires. At present, the direction of the force used for the wiring operation of the traditional circuit breaker terminal block is perpendicular to the wiring direction, that is, the direction of the external force used for the wiring operation is inconsistent with the wiring direction of the wire, resulting in the need for space in at least two directions for operation during the wiring process of the terminal block. However, some circuit breakers currently need to be installed in a small space, and only the wiring direction of the circuit breaker has space for wiring operations. The existing terminal blocks cannot meet the terminal block wiring connection under such conditions.

[0003] In order to solve the above problems, a Chinese utility model with publication number CN 209104095 U discloses a composite terminal block, which solves the problem of the wiring direction being different from the wiring direction of the wire and occupying a large space by combining screws with spring sheets. However, the structure still has the following problems: 1. The spring sheet is driven by screwing the screw into the nut, which can easily cause the screw to fall off during use, making operation inconvenient. 2. The axial length of the screw is relatively large, so the longitudinal distance of the wiring bracket needs to be designed to be larger, and the required operating space is also larger. Otherwise, for some thicker wires, the screw may be exposed for a longer distance, resulting in poor fixing effect or safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a composite terminal block to overcome the defects of the prior art, thereby improving the convenience of operation and reducing the overall volume of the terminal block.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A composite terminal comprises a wiring bracket, a spring sheet, a rotating shaft, a wiring baffle and an actuator, wherein the rotating shaft is installed in the wiring bracket, the spring sheet is located on the rotating shaft in the wiring bracket and can rotate around the rotating shaft, the wiring baffle is arranged on one side of the top of the wiring bracket, a wiring space is reserved between the elastic arm end on one side of the spring sheet and the wiring baffle, and the actuator is located at the bottom of the wiring bracket and is used for linkage with the spring sheet;

[0007] The actuator includes a screw, a fixed frame and a sliding block. The fixed frame is connected to the wiring bracket, and a limiting slot is provided on the fixed frame. The screw is provided with an annular groove. The screw passes through the limiting slot so that the annular groove and the limiting slot are interlocked with each other, and the screw can rotate in the limiting slot. The sliding block is installed on the screw and is threadedly connected to the screw. The sliding block moves along the axial direction of the screw as the screw rotates. The sliding block pushes the arm end on the other side of the spring sheet to rotate the spring sheet. During the rotation process, the elastic arm end can press the inserted external wire.

[0008] Furthermore, a U-shaped groove is provided on the end of the support arm for passing the screw rod.

[0009] Furthermore, a disc head is provided on the proximal end of the screw rod close to the annular groove.

[0010] Furthermore, a rotating handle is provided on the proximal end of the screw rod close to the annular groove.

[0011] Furthermore, the limiting slot hole is a U-shaped hole.

[0012] Furthermore, a bearing is provided between the limiting slot and the rotating shaft.

[0013] Furthermore, a smooth surface is provided on the distal end of the screw away from the annular groove.

[0014] Furthermore, a protrusion is provided at the bottom of the sliding block, and a sliding groove is provided at the bottom of the wiring bracket. The protrusion is inserted into the sliding groove so that the sliding block can move along the sliding groove.

[0015] Furthermore, the wiring baffle and the wiring bracket are integrated.

[0016] Furthermore, the fixing frame and the wiring bracket are integrated.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention designs an integral actuator consisting of a screw rod, a fixing bracket and a sliding block, which overcomes the technical problems that the screw and nut structure is easy to fall off and the longitudinal length of the wiring bracket is too large.

[0019] 2. A U-shaped groove is provided on the end of the support arm, so that the end of the support arm and the screw rod are staggered with each other, which can effectively increase the stroke of the spring sheet in the same space, making the space more compact and helping to reduce the overall volume of the terminal.

[0020] 3. A disc head is provided at the end of the screw to increase the contact area with the screwdriver, making the installation more stable and convenient; or the end of the screw can be a rotating handle, which is convenient for users to directly install by hand and avoid the use of tools.

[0021] 4. The far end of the screw rod away from the annular groove is a smooth surface, which can limit the sliding block, and the sliding block is separated from the screw rod during the thread removal process.

[0022] 5. A convex block is provided under the sliding block to cooperate with the sliding groove, which improves the stability of the sliding block when it moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the present invention in a state where no conductor is clamped.

[0026] Figure 4 It is a structural schematic diagram of the present invention in a state of clamping a wire.

[0027] Figure numerals: 1, wiring bracket, 11, sliding groove, 2, spring sheet, 21, elastic arm end, 22, support arm end, 22a, U-shaped groove, 3, rotating shaft, 4, wiring baffle, 5, screw, 51, ring groove, 6, fixing frame, 61, limiting slot, 7, sliding block, 71, protrusion, 8, disk head. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0029] Embodiment 1

[0030] like Figure 1 to Figure 4 As shown, this embodiment provides a composite terminal, including a wiring bracket 1, a spring sheet 2, a rotating shaft 3, a wiring baffle 4 and an actuator. The rotating shaft 3 is installed in the wiring bracket 1, and the spring sheet 2 is located on the rotating shaft 3 in the wiring bracket 1 and can rotate around the rotating shaft 3. The wiring baffle 4 is arranged on one side of the top of the wiring bracket 1, and a wiring space is left between the elastic arm end 21 on one side of the spring sheet 2 and the wiring baffle 4. The actuator is located at the bottom of the wiring bracket 1 and is used to work in conjunction with the spring sheet 2.

[0031] The actuator includes a screw rod 5, a fixing frame 6 and a sliding block 7. The fixing frame 6 is arranged on the wiring bracket 1. A limiting slot 61 is arranged on the fixing frame 6. An annular groove 51 is arranged at the left end of the screw rod 5. The screw rod 5 passes through the limiting slot 61 so that the annular groove 51 and the limiting slot 61 are interlocked with each other, and the screw rod 5 can rotate freely in the limiting slot 61. The limiting slot 61 limits the axial direction of the screw rod 5. The sliding block 7 is installed at the right end of the screw rod 5. Specifically, a threaded hole is arranged in the sliding block 7 for passing the screw rod 5; a convex block 71 is arranged at the lower end of the sliding block 7, and a sliding groove 11 is arranged along the axial direction of the screw rod 5 at the bottom of the wiring bracket 1, and the convex block 71 is inserted into the sliding groove 11. Therefore, the sliding block 7 can move along the sliding groove 11 as the screw rod 5 rotates. A disk head 8 with a larger area is also arranged at the left end of the screw rod 5 to increase the contact area between the screw rod 5 and the screwdriver, making the use and installation more stable and convenient.

[0032] The wiring baffle 4 and the wiring bracket 1 are generally integrated or detachable structures, and the specific form is not limited. This embodiment adopts a detachable structure with a snap-on connection. The fixing frame 6 and the wiring bracket 1 are also generally integrated or detachable structures. This embodiment adopts a plug-in detachable structure. The protrusions at both ends of the fixing frame 6 are inserted into the grooves of the wiring bracket 1, and the limiting slot hole 61 in the fixing frame 6 is a U-shaped hole opening downward, so that the annular groove 51 is embedded in the U-shaped hole. This structure can realize the simple installation and disassembly of the entire actuator.

[0033] In this embodiment, a U-shaped groove 22a may be further provided on the arm end 22 for passing the screw rod 5. This structure allows the arm end 22 and the screw rod 5 to intersect with each other, which can effectively increase the stroke of the spring sheet 2 in the same space, making the space more compact and helping to reduce the overall volume of the terminal.

[0034] The working principle of this embodiment is: when the wire is inserted under the wiring baffle 4, the screw 5 is rotated, and the screw 5 drives the sliding block 7 to push the spring sheet 2 to rotate around the rotating shaft 3. During the rotation process, the elastic arm end 21 of the spring sheet 2 and the wiring baffle 4 jointly press the inserted wire.

[0035] Embodiment 2

[0036] The overall structure and principle of this embodiment are the same as those of the first embodiment, except that a rotating handle is used at the proximal end of the screw rod near the annular groove instead of the disc head, so that the user can directly perform manual installation, avoiding the use of tools and further improving convenience.

[0037] Embodiment 3

[0038] The overall structure and principle of this embodiment are the same as those of the first embodiment, except that a bearing may be provided between the limiting slot and the rotating shaft. The bearing may be a ball bearing, a sliding bearing, etc., in any form, to improve the stability of the screw installation and the smoothness of the rotation.

[0039] Embodiment 4

[0040] The overall structure and principle of this embodiment are the same as those of the first embodiment, except that the distal end of the screw rod away from the annular groove is a smooth surface, and the sliding block is a rectangular block, and there is no sliding groove at the bottom of the wiring bracket, and the rectangular block and the bottom slide in surface contact. Therefore, during the sliding process of the sliding block, the smooth surface on the screw rod can limit the sliding distance of the sliding block to prevent it from falling off the screw rod.

[0041] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A composite terminal, comprising a terminal support (1), a spring sheet (2), a rotating shaft (3), a terminal baffle (4) and an actuator, wherein the rotating shaft (3) is installed in the terminal support (1), the spring sheet (2) is located on the rotating shaft (3) in the terminal support (1) and can rotate around the rotating shaft (3), the terminal baffle (4) is arranged on one side of the top of the terminal support (1), a wiring space is reserved between the elastic arm end (21) on one side of the spring sheet (2) and the terminal baffle (4), and the actuator is located at the bottom of the terminal support (1) and is used to work in conjunction with the spring sheet (2); It is characterized in that The actuator comprises a screw rod (5), a fixing frame (6) and a sliding block (7), wherein the fixing frame (6) is connected to the wiring bracket (1), a limiting slot (61) is provided on the fixing frame (6), an annular groove (51) is provided on the screw rod (5), the screw rod (5) passes through the limiting slot (61) so that the annular groove (51) and the limiting slot (61) are interlocked with each other, and the screw rod (5) can rotate in the limiting slot (61), the sliding block (7) is installed on the screw rod (5) and is threadedly connected to the screw rod (5), the sliding block (7) moves axially along the screw rod (5) as the screw rod (5) rotates, the sliding block (7) pushes the arm end (22) on the other side of the spring sheet (2) so that the spring sheet (2) rotates, and during the rotation process, the spring arm end (21) can press the inserted external wire tightly; The support arm end (22) is provided with a U-shaped groove (22a) for passing the screw rod (5).

2. The composite terminal according to claim 1, characterized in that: A disc head (8) is provided on the proximal end of the screw rod (5) close to the annular groove (51).

3. The composite terminal according to claim 1, characterized in that: A rotating handle is provided on the proximal end of the screw rod (5) close to the annular groove (51).

4. The composite terminal according to claim 1, characterized in that: The limiting slot hole (61) is a U-shaped hole.

5. The composite terminal according to claim 1, characterized in that: A bearing is provided between the limiting slot hole (61) and the rotating shaft (3).

6. The composite terminal according to claim 1, characterized in that: A smooth surface is provided on the distal end of the screw rod (5) away from the annular groove (51).

7. The composite terminal according to claim 1, characterized in that: The bottom of the sliding block (7) is provided with a protrusion (71), and the bottom of the wiring bracket (1) is provided with a sliding groove (11). The protrusion (71) is inserted into the sliding groove (11) so that the sliding block (7) can move along the sliding groove (11).

8. The composite terminal according to claim 1, characterized in that: The wiring baffle (4) and the wiring bracket (1) are integrated.

9. The composite terminal according to claim 1, characterized in that: The fixing frame (6) and the wiring bracket (1) are integrated.

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