A small wire diameter wire straight insertion terminal

Abstract

The small-diameter wire straight insertion terminal disclosed by the application comprises an insulating shell, a wire clamping spring, a conductive part and a button part. The conductive part is in abutment with the clamping section of the wire clamping spring. The button part drives the clamping section to move in the pressing direction after being pressed. The wire clamping spring is provided with an elastic wall and a driving section. One side of the elastic wall is connected with the wire clamping spring. The other side of the elastic wall is movably arranged and has a locking part. The clamping section is positioned on the elastic wall by the locking part after passing through the locking part. The opening part of the driving section is movably arranged between the elastic wall close to the opening part. When the wire is pressed down, the driving section moves downward at the initial position to drive the opening part of the driving section to drive the elastic wall to be in the opening state, so that the locking part is separated from the clamping section. The application is convenient, labor-saving and fast, ensures that the wire is reliably clamped by the clamping section after being inserted in place, avoids the wire from being loosened, and improves the connection stability between the wire and the terminal.

Description

Technical Field

[0001] This invention relates to the field of terminal block technology, and in particular to a straight-insertion terminal for small-diameter wires. Background Technology

[0002] Currently, terminal blocks are electrical connection devices that are convenient, fast, and safe to use. They are widely used in wiring of various electronic devices and industrial control systems, and are also widely used in photovoltaic power generation, rail transportation, heavy equipment, and automation. In existing technology, terminal blocks include an insulating housing with wiring holes for wire insertion, a conductor on the housing, and a wire-clamping spring inside the housing. The spring has a clamping section that can elastically deform and move under pressure. Clamping or releasing the wire is achieved by pressing a button on the insulating housing. For example, Chinese invention patent CN106602290B discloses a terminal block including multiple elastic clamping members. Each elastic clamping member includes a fixed base with a spring piece on it. The spring piece includes a fixed section and a clamping section connected to the fixed section. The elastic clamping member has a wire insertion port and a pressing port. A button is provided in the pressing port and abuts against the corresponding clamping section. The fixed base is provided with two clamping section limiting members. The clamping section can abut against the two clamping section limiting members to limit the clamping section.

[0003] When inserting or removing wires, existing terminal blocks require operators to continuously press a button with a tool to keep the clamping section open. This can easily lead to hand fatigue. After the wire is inserted or removed, the button must be released, and the clamping section will spring back to its original shape and press the wire firmly. This operation is quite cumbersome, especially when small-diameter wires are connected to the terminal block. If the button is released before the wire is fully inserted, the clamping section may fail to hold the wire securely, causing the wire to come loose and resulting in an unstable connection. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by designing a small-diameter wire straight-insertion terminal that is easy to operate, labor-saving, and quick. It ensures that the wire is reliably clamped after being inserted into place, preventing the wire from coming loose and improving the connection stability between the wire and the terminal.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a small-diameter wire straight-insertion terminal, comprising an insulating shell, a wire clamping spring piece installed in the insulating shell, a conductive element and a button part, wherein the conductive element abuts against the clamping section of the wire clamping spring piece, and the button part, after being pressed, drives the clamping section to move along the pressing direction to cooperate with the conductive element to form a wiring space for wire insertion; the wire clamping spring piece is provided with an elastic wall and a driving section.

[0006] One side of the elastic wall is connected to the wire clamping spring, and the other side of the elastic wall is movably provided with a locking part. After passing through the locking part, the clamping section is positioned on the elastic wall by the locking part. The driving section is located below the clamping section, and the opening part of the driving section is movably disposed between itself and the adjacent elastic wall. When the wire is pressed down, the driving section moves downward from its initial position so that the opening part of the driving section drives the elastic wall to open, thereby separating the locking part from the clamping section.

[0007] Preferably, there are two elastic walls, which are symmetrically arranged on the clamping spring, and the driving segment moves within the space between the two elastic walls.

[0008] Preferably, a driving part is provided below the locking part on the elastic wall. The driving part forms a guide slope on the side wall near the driving section. A driving groove is provided on the side of the driving section near the elastic wall. When the driving section moves in the downward pressing direction, the guide slope and the driving groove abut against each other.

[0009] Preferably, the elastic wall extends a guide section above the locking portion, and the clamping section moves along the guide section.

[0010] Preferably, the locking part has a guide surface that is inclined along the guide section, and the side wall of the locking part away from the guide surface has a positioning surface that abuts against the clamping section.

[0011] Preferably, the clamping spring is further provided with an installation section, and the side portion of the installation section in the width direction is fixedly connected to the elastic wall adjacent to it.

[0012] Preferably, the driving segment is fixedly connected to the connecting segment of the clamping spring, the connecting segment and the mounting segment are in abutting engagement on opposite sides, the connecting segment is provided with a first positioning structure, the mounting segment is provided with a second positioning structure, and the first positioning structure and the second positioning structure are in a concave-convex engagement.

[0013] Preferably, the driving segment is fixedly connected to the lower part of the mounting segment, the connecting segment of the clamping spring is stacked and abutting with the mounting segment, the connecting segment abuts with the opposite side of the mounting segment, the connecting segment is provided with a first positioning structure, the mounting segment is provided with a second positioning structure, and the first positioning structure and the second positioning structure are in concave-convex fit.

[0014] Preferably, the upper part of the mounting section is fixedly connected to the connecting section of the clamping spring, and the lower part of the mounting section is fixedly connected to the driving section.

[0015] Preferably, the insulating shell has at least one terminal, and the terminal has a wire insertion hole and a button hole that communicate with the inner cavity of the insulating shell. The wire insertion hole is used to guide the wire to be inserted into the driving section, and the button hole is used for the button part to slide and connect. The end of the button part abuts against the clamping section through the button hole.

[0016] The inner cavity of the insulating shell is provided with a first protrusion and a second protrusion. The first protrusion and the insulating shell form a positioning space for the insertion of the wire clamping spring. The second protrusion is used to limit the driving segment to the initial position.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The small-diameter wire straight-insertion terminal provided by the present invention, by pressing the button, causes the clamping section to move in the pressing direction. The clamping section separates from the conductive part to form a wiring space for wire insertion and removal. During this process, the clamping section abuts against the locking part, driving the elastic wall to move outward away from the clamping section until the clamping section passes smoothly through the locking part. Then the elastic wall resets to drive the locking part to approach the clamping section. The locking part abuts against the clamping section to position the clamping section, thereby maintaining the wiring space for the wiring personnel to insert the wire. The wiring personnel do not need to continuously press the button, reducing the workload of the wiring personnel's hands. The operation is convenient, labor-saving and quick.

[0019] 2. The drive section is movable between itself and the adjacent elastic wall. By inserting the wire into the wiring space, the end of the wire presses down on the drive section, which in turn drives the drive section to move in the downward pressing direction. The drive section causes the elastic wall to expand outward, and the locking part moves away from the clamping section to release the positioning of the clamping section. The clamping section resets to clamp the wire, ensuring that the wire is reliably clamped by the clamping section after it is inserted into place, avoiding the wire from coming loose. This improves the connection stability between the wire and the terminal block and is suitable for wiring operations with small diameter wires. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the through-hole terminal in Embodiment 1;

[0021] Figure 2 This is a cross-sectional view of the through-hole terminal in Embodiment 1;

[0022] Figure 3 This is a cross-sectional view of the clamping section after it passes through the locking part and is positioned by the locking part in Embodiment 1.

[0023] Figure 4 This is an exploded view of the through-hole terminal in Embodiment 1;

[0024] Figure 5 This is a schematic diagram of the wire clamping spring in Embodiment 2;

[0025] Figure 6 This is a split diagram of the clamping spring in Embodiment 2;

[0026] Figure 7 This is a schematic diagram of the wire clamping spring in Embodiment 3.

[0027] In the diagram: 1. Insulating shell; 2. Wire clamping spring; 21. Connecting section; 22. Clamping section; 3. Conductive component; 4. Conductive section; 5. Slot; 6. Baffle section; 7. Button section; 8. Elastic wall; 9. Guide section; 10. Mounting section; 11. Driving section; 12. Locking part; 13. Driving part; 14. Guide slope; 15. Driving groove; 16. Guide surface; 17. Positioning surface; 18. First positioning structure; 19. Second positioning structure; 20. Wire insertion hole; 23. Second protrusion; 24. Spreading part; 25. Button hole; 26. First protrusion. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0029] Example 1:

[0030] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A small-diameter wire straight-insertion terminal includes an insulating shell 1, a wire-clamping spring 2, a conductive element 3, and a button part 7. The insulating shell 1 has two symmetrically arranged terminals, each with a wire insertion hole 20 and a button hole 25 communicating with the inner cavity of the insulating shell 1. Two button parts 7 are provided, each slidably connected to a corresponding button hole 25. The side of the insulating shell 1 has an opening communicating with its inner cavity. The inner cavity of the insulating shell 1 has a first protrusion 26 and a second protrusion 23, with the first protrusion 26 forming a wire-clamping spring between it and the insulating shell 1. 2. An insertion positioning space, which is arc-shaped, is provided to position the wire clamping spring 2 in the inner cavity of the insulating shell 1. The wire clamping spring 2 has a clamping section 22 and a connecting section 21. The upper part of the clamping section 22 and the connecting section 21 are integrally formed. The wire clamping spring 2 is also provided with a driving section 11. The driving section 11 is integrally formed with the lower part of the connecting section 21. The second protrusion 23 is used to limit the driving section 11 to the initial position. The driving section 11 has a movable gap with the conductive member 3 in the initial position. The insertion hole 20 is used to guide the wire to be inserted into the driving section 11.

[0031] The conductive component 3 has conductive segments 4 bent at both ends. The conductive segments 4 abut against the clamping segments 22. The conductive segments 4 have several slots 5 for the clamping segments 22 to be inserted. The side of the conductive segments 4 is bent to form a baffle segment 6. The clamping segments 22 move in the space between the conductive segments 4 and the baffle segments 6. The button part 7 abuts against the clamping segments 22 through the end of the button hole 25. When the button part 7 is pressed, it drives the clamping segments 22 to move in the pressing direction to cooperate with the conductive component 3 to form a wiring space for wire insertion.

[0032] The clamping spring 2 has two symmetrically arranged elastic walls 8. The clamping spring 2 is detachably connected to an installation section 10. The two sides of the installation section 10 in the width direction are respectively fixedly connected to the two elastic walls 8. The installation section 10 and the two elastic walls 8 form a U-shaped structure. The connecting section 21 is stacked and abuts against the installation section 10. The connecting section 21 is provided with a first positioning structure 18, and the installation section 10 is provided with a second positioning structure 19. The first positioning structure 18 and the second positioning structure 19 are in a concave-convex fit. The first positioning structure 18 is a positioning hole, and the second positioning structure 19 is a positioning protrusion, which is inserted into the positioning hole. Alternatively, the connecting section 21 and the installation section 10 can be implemented in another way, where the first positioning structure 18 is a positioning protrusion and the second positioning structure 19 is a positioning hole. One side of the elastic wall 8 is connected to the clamping spring 2 via the mounting section 10. The driving section 11 moves within the space between the two elastic walls 8. The other side of the elastic wall 8 is movably provided so that the two elastic walls 8 can open or close. Each of the two elastic walls 8 has a locking part 12 on its opposite side.

[0033] A guide section 9 extends from the upper part of the elastic wall 8 corresponding to the locking part 12. The clamping part 22 moves along the guide section 9 to guide the deformation of the clamping part 22. A driving part 13 is provided below the elastic wall 8 corresponding to the locking part 12. A guide slope 14 is formed on the side wall of the driving part 13 near the driving part 11. A driving groove 15 is provided on the side of the driving part 11 near the elastic wall 8. When the driving part 11 moves in the downward pressing direction, the guide slope 14 and the driving groove 15 abut against each other to drive the elastic wall 8 to move.

[0034] The through-hole terminal, when pressed by the button 7, causes the clamping section 22 to move in the pressing direction. The clamping section 22 separates from the conductive element 3 to form a wiring space for wire insertion and removal. The locking part 12 has a guide surface 16 inclined along the guide section 9. The side wall of the locking part 12 away from the guide surface 16 has a positioning surface 17 that abuts against the clamping section 22. During the process of the clamping section 22 being pressed down by the button 7, the two sides of the clamping section 22 abut against the guide surfaces 16 of the two locking parts 12, driving... The two elastic walls 8 are pressed and open outward to move away from the clamping section 22 until the clamping section 22 passes smoothly through the locking part 12. At this point, the positioning surface 17 is located in front of the clamping section 22. The two elastic walls 8 then deform and close inward to reset, driving the two locking parts 12 to approach the clamping section 22. The positioning surface 17 of the two locking parts 12 restricts the reset action of the clamping section 22. When the wiring personnel release the pressure on the button part 7, the clamping section 22 deforms back and presses against the two positioning surfaces 17. After passing the locking part 12, the clamping section 22 is positioned on the elastic wall 8 by the locking part 12 to maintain wiring space. The wiring personnel can insert the wire into the plug hole 20 without continuously pressing the button part 7, reducing the workload of the wiring personnel's hands and making the operation convenient, labor-saving, and quick.

[0035] When the wire is inserted into the wiring space and the end of the wire presses down on the driving section 11, the wire is in place. The wire drives the driving section 11 to move in the downward pressing direction. Under the contact and cooperation of the guide slope 14 and the driving groove 15, the opening part 24 of the driving section 11 drives the two elastic walls 8 to expand outward, so that the two elastic walls 8 are in an open state. At this time, the locking part 12 is separated from the clamping section 22 to release the positioning of the clamping section 22. The clamping section 22 continues to recover its deformation and return to the position of clamping the wire, ensuring that the wire is reliably clamped by the clamping section 22 after it is inserted into place, avoiding the wire from coming loose, improving the connection stability between the wire and the terminal, and is suitable for wiring operations of small diameter wires.

[0036] Example 2:

[0037] refer to Figure 5 , Figure 6 Unlike Embodiment 1, the connecting section 21 and the driving section 11 are separate structures. The driving section 11 is fixedly connected to the lower part of the mounting section 10, so that the driving section 11, the mounting section 10, and the two elastic walls 8 are integrated into one structure. The connecting section 21 is provided with a first positioning structure 18, and the mounting section 10 is provided with a second positioning structure 19. The first positioning structure 18 and the second positioning structure 19 are in a concave-convex fit. The first positioning structure 18 is a positioning hole, and the second positioning structure 19 is a positioning protrusion. The positioning protrusion is inserted into the positioning hole, which facilitates the replacement of the individual clamping spring 2 when the clamping section 22 is damaged.

[0038] Example 3:

[0039] refer to Figure 7 Unlike Embodiment 1, the clamping spring 2 is fixedly connected to the mounting section 10. The two sides of the mounting section 10 in the width direction are respectively fixedly connected to two elastic walls 8. The mounting section 10 and the two elastic walls 8 form a U-shaped structure. The upper part of the mounting section 10 is integrally formed with the connecting part, and the driving section 11 is integrally formed with the lower part of the mounting end. The clamping section 22, the connecting section 21, the driving section 11, the connecting section 21 and the mounting section 10 are all integral structures, which reduces the number of parts of the terminal block, thereby making the disassembly and assembly of the terminal block more convenient.

[0040] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A small-diameter wire insertion terminal, comprising an insulating shell (1), a wire clamping spring (2) installed inside the insulating shell (1), a conductive element (3), and a button part (7), wherein the conductive element (3) abuts against the clamping section (22) of the wire clamping spring (2), and the button part (7), when pressed, drives the clamping section (22) to move in the pressing direction to cooperate with the conductive element (3) to form a wiring space for wire insertion, characterized in that: The clamping spring (2) is provided with an elastic wall (8) and a driving section (11); One side of the elastic wall (8) is connected to the wire clamping spring (2), and the other side of the elastic wall (8) is movably provided with a locking part (12). The clamping section (22) is positioned on the elastic wall (8) by the locking part (12) after passing through the locking part (12). The driving section (11) is located below the clamping section (22). The opening part (24) of the driving section (11) is movably disposed between itself and the elastic wall (8) adjacent to it. When the wire is pressed down, the driving section (11) moves downward from its initial position so that the opening part (24) of the driving section (11) drives the elastic wall (8) to open, so that the locking part (12) is separated from the clamping section (22).

2. The small-diameter wire straight-insertion terminal according to claim 1, characterized in that: Two elastic walls (8) are provided, and the two elastic walls (8) are symmetrically arranged on the clamping spring (2). The driving section (11) moves within the space between the two elastic walls (8).

3. A small-diameter wire straight-insertion terminal according to claim 1 or 2, characterized in that: The elastic wall (8) is provided with a driving part (13) below the locking part (12). The driving part (13) forms a guide slope (14) near the side wall of the driving section (11). The driving section (11) is provided with a driving groove (15) near the side of the elastic wall (8). When the driving section (11) moves in the downward pressing direction, the guide slope (14) and the driving groove (15) abut against each other.

4. A small-diameter wire straight-insertion terminal according to claim 3, characterized in that: The elastic wall (8) extends a guide section (9) above the locking part (12), and the clamping section (22) moves along the guide section (9).

5. A small-diameter wire straight-insertion terminal according to claim 4, characterized in that: The locking part (12) has a guide surface (16) that is inclined along the guide section (9), and the side wall of the locking part (12) away from the guide surface (16) has a positioning surface (17) that abuts against the clamping section (22).

6. A small-diameter wire straight-insertion terminal according to claim 3, characterized in that: The clamping spring (2) is also provided with a mounting section (10), the side of the mounting section (10) in the width direction is fixedly connected to the elastic wall (8) adjacent to it.

7. A small-diameter wire straight-insertion terminal according to claim 6, characterized in that: The driving section (11) is fixedly connected to the connecting section (21) of the clamping spring (2), the connecting section (21) and the opposite side of the mounting section (10) are in abutting fit, the connecting section (21) is provided with a first positioning structure (18), the mounting section (10) is provided with a second positioning structure (19), and the first positioning structure (18) and the second positioning structure (19) are in concave-convex fit.

8. A small-diameter wire straight-through terminal according to claim 6, characterized in that: The driving section (11) is fixedly connected to the lower part of the mounting section (10). The connecting section (21) of the clamping spring (2) is stacked and abuts against the mounting section (10). The connecting section (21) abuts against the opposite side of the mounting section (10). The connecting section (21) is provided with a first positioning structure (18). The mounting section (10) is provided with a second positioning structure (19). The first positioning structure (18) and the second positioning structure (19) are in concave-convex fit.

9. A small-diameter wire straight-insertion terminal according to claim 6, characterized in that: The upper part of the mounting section (10) is fixedly connected to the connecting section (21) of the clamping spring (2), and the lower part of the mounting section (10) is fixedly connected to the driving section (11).

10. A small-diameter wire straight-through terminal according to claim 1, characterized in that: The insulating shell (1) has at least one terminal, and the terminal has a wire insertion hole (20) and a button hole (25) communicating with the inner cavity of the insulating shell (1). The wire insertion hole (20) is used to guide the wire to be inserted into the drive section (11). The button hole (25) is used for the button part (7) to slide and connect. The button part (7) abuts against the clamping section (22) through the end of the button hole (25). The inner cavity of the insulating shell (1) is provided with a first protrusion (26) and a second protrusion (23). The first protrusion (26) and the insulating shell (1) form a positioning space for the insertion of the wire clamping spring (2). The second protrusion (23) is used to limit the drive section (11) to the initial position.

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