A double-clamping terminal block

Abstract

The invention discloses a double-clip clamping terminal, comprising a housing, a wiring hole and an operation hole are provided on the housing, a main wire pressing frame is provided in the wiring hole, a wire can be fixedly clamped between the main wire pressing frame and the conductive member by tightening a screw, a secondary wire pressing frame is provided on the outside of the main wire pressing frame, the main wire pressing frame, the secondary wire pressing frame and the housing are all connected by sliding up and down, a support is provided on the inner wall of the housing, a lever spring is installed on the support, and the two ends of the lever spring are respectively fixedly connected to the bottom of the main wire pressing frame and the secondary wire pressing frame. When the main wire pressing frame moves up, the secondary wire pressing frame is driven to move down, and the main wire pressing frame and the secondary wire pressing frame are staggered to clamp the wire, thereby improving the effect of clamping the wire, and at the same time, the secondary wire pressing frame presses the wire at the entrance of the wiring hole, and a part of the friction force on the wire can act on the housing, making it more difficult to pull out the wire.

Description

Technical Field

[0001] The invention relates to the technical field of wiring terminals, and in particular to a double-clip clamping wiring terminal. Background Art

[0002] The grounding connection in electrical equipment needs to be realized by a screw-type electrical terminal. The UT series standard terminal is a screw connection terminal that can realize maintenance-free wire connection. A Chinese patent with publication number CN203250862U discloses an electrical terminal for electrical connection, which is composed of an integrated insulating part, a wire pressing screw, a conductor, a wire pressing frame, and a grounding contact pin. When wiring, the gravity and pulling force of the wire will be directly transmitted to the wire pressing screw, the conductor and the wire pressing frame, which can easily cause the wire to fall off. Summary of the invention

[0003] The present invention aims to solve the problems existing in the above-mentioned prior art and provides a double-clip clamping terminal, which can improve the fixing ability of the wiring hole on the housing to the wire and prevent the wire from falling off.

[0004] The present invention solves its technical problems by adopting a technical solution: a double-clip clamping terminal, comprising a shell, the shell being provided with a wiring hole and an operating hole, a main wire pressing frame being provided in the wiring hole, a screw being provided in the operating hole, the screw being threadedly connected to the screw hole at the upper end of the main wire pressing frame, a conductive part being fixedly installed inside the shell, the end of the conductive part being located in the main wire pressing frame, the wire being fixedly clamped between the main wire pressing frame and the conductive part by tightening the screw, a secondary wire pressing frame being provided on the outer side of the main wire pressing frame, the main wire pressing frame, the secondary wire pressing frame and the shell being all slidably connected up and down, a pillar being provided on the inner wall of the shell, a lever spring being installed on the pillar, the two ends of the lever spring being respectively fixedly connected to the bottom of the main wire pressing frame and the secondary wire pressing frame.

[0005] To be further improved, the lever spring comprises a torsion spring portion, a first elastic arm and a second elastic arm. The torsion spring portion is sleeved on the pillar, and the two sides of the torsion spring portion are respectively hinged to the auxiliary wire pressing frame and the main wire pressing frame through the first elastic arm and the second elastic arm.

[0006] For further improvement, a bending portion is provided on the second elastic arm.

[0007] For further improvement, a sliding sleeve hole is provided on the torsion spring portion.

[0008] For further improvement, a wiring frame is fixedly installed on the shell, the wiring frame is located between the main wire pressing frame and the auxiliary wire pressing frame, and the upper end of the wiring frame is fixedly connected to the conductive member.

[0009] For further improvement, a contact piece extending into the auxiliary pressure wire frame is provided at the lower end of the wiring frame, and the wiring frame and the contact piece are made of conductive material.

[0010] As a further improvement, the upper side of the contact piece is provided with anti-slip grooves.

[0011] For further improvement, a limit slot is provided at the upper end of the wiring frame, and the end of the conductive member is bent to form a limit edge, and the limit edge is plugged and matched with the limit slot.

[0012] For further improvement, a V-shaped self-locking groove is provided on the top of the inner hole of the auxiliary wire pressing frame.

[0013] The beneficial effects of the present invention are as follows: the present invention has a good locking effect, when the main wire pressing frame moves up, the lever spring drives the auxiliary wire pressing frame to move down, the main wire pressing frame and the auxiliary wire pressing frame are staggered to clamp the wire, thereby improving the effect of clamping the wire, and at the same time the auxiliary wire pressing frame presses the wire at the entrance of the wiring hole, and a part of the friction force on the wire can act on the shell, making it more difficult to pull out the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention in a loosened state;

[0015] Figure 2 It is a structural schematic diagram of the present invention in a wiring state;

[0016] Explanation of the reference numerals in the accompanying drawings: 1. Shell, 2. Wiring hole, 3. Operating hole, 4. Main wire pressing frame, 5. Screw, 6. Conductive member, 7. Auxiliary wire pressing frame, 8. Pillar, 9. Lever spring, 10. Torsion spring portion, 11. Sliding sleeve hole, 12. First elastic arm, 13. Second elastic arm, 14. Bending portion, 15. Routing frame, 16. Contact piece, 17. Anti-slip pattern, 18. Limiting slot, 19. Limiting edge, 20. V-shaped self-locking groove. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] See attached Figure 1-2 : In this embodiment, a double-clip clamping terminal comprises a shell 1, a wiring hole 2 and an operating hole 3 are provided on the shell 1, a main wire pressing frame 4 is provided in the wiring hole 2, a screw 5 is provided in the operating hole 3, the screw 5 is threadedly connected to the screw hole at the upper end of the main wire pressing frame 4, a conductive member 6 is fixedly installed inside the shell 1, and the end of the conductive member 6 is located in the main wire pressing frame 4. By tightening the screw 5, the wire can be fixedly clamped between the main wire pressing frame 4 and the conductive member 6, a secondary wire pressing frame 7 is provided on the outer side of the main wire pressing frame 4, and the main wire pressing frame 4, the secondary wire pressing frame 7 and the shell 1 are all slidably connected up and down, a pillar 8 is provided on the inner wall of the shell, a lever spring 9 is installed on the pillar 8, and the two ends of the lever spring 9 are respectively fixedly connected to the bottom of the main wire pressing frame and the secondary wire pressing frame.

[0019] Through the above technical scheme, during the wiring operation, the wire is inserted into the wiring hole 2, passed through the main wire pressing frame 4 and the auxiliary wire pressing frame 7, and then the screw 5 in the operation hole 3 is tightened by using a screwdriver tool. When the screw 5 rotates forward, the main wire pressing frame 4 is driven to slide upward by the thread to clamp the wire to the conductive member 6. When the main wire pressing frame 4 moves up, the lever spring 9 is rotated counterclockwise to drive the auxiliary wire pressing frame 7 to slide downward, thereby clamping the wire near the entrance of the wiring hole 2. The wire is in a "Z"-shaped clamping state, which increases the clamping point and the clamping length. The main wire pressing frame 4 and the auxiliary wire pressing frame 7 are staggered to clamp the wire, which improves the positioning effect of clamping the wire, and is not easy to loosen. The friction force on the wire can partially act on the housing (i.e., near the entrance of the wiring hole 2), so that the external pulling force is not easy to be transmitted to the position between the inner main wire pressing frame 4 and the conductive member 6, making it more difficult to pull the wire out. After the two sides of the housing 1 are connected, the circuits on both sides are connected through the conductive member 6. When the wire needs to be removed, the screw 5 in the operating hole 3 can be rotated in the opposite direction by using a screwdriver tool. The screw 5 drives the main wire pressing frame 4 to move down to loosen the wire. At this time, the auxiliary wire pressing frame 7 moves up under the elastic force of the lever spring 9 rotating clockwise to loosen the wire, so that the wire can be easily removed from the wiring hole 2. On the one hand, the lever spring 9 can be tightened to provide a pre-tightening force for the screw 5 to prevent the screw 5 from loosening. On the other hand, it can promote the faster resetting of the main wire pressing frame 4 and the auxiliary wire pressing frame 7 when the wire is removed.

[0020] The lever spring 9 comprises a torsion spring portion 10, a first elastic arm 12 and a second elastic arm 13. The torsion spring portion 10 is sleeved on the support 8. The two sides of the torsion spring portion 10 are respectively hinged to the auxiliary wire pressing frame and the main wire pressing frame through the first elastic arm 12 and the second elastic arm 13. The torsion spring portion 10 can make the lever spring 9 have greater elasticity at the fulcrum, thereby increasing the service life of the lever spring 9.

[0021] The second elastic arm 13 is provided with a bending portion 14, which can facilitate the extension and folding of the second elastic arm 13 and is not easy to be broken. The torsion spring portion 10 is provided with a sliding sleeve hole 11. It can facilitate the sliding adjustment of the fulcrum position when the torsion spring portion 10 rotates to meet the length requirements of both sides, play the role of increasing the power arm and shortening the resistance arm, so that the auxiliary wire pressing frame 7 can be clamped tighter.

[0022] The housing 1 is fixedly provided with a wiring frame 15, which is located between the main wire pressing frame 4 and the auxiliary wire pressing frame 7, and the upper end of the wiring frame 15 is fixedly connected to the conductive member 6. The wiring frame 15 can provide a space for accommodating the wires between the main wire pressing frame 4 and the auxiliary wire pressing frame 7, and constrain them to prevent them from being sheared or scattered at will.

[0023] The lower end of the wiring frame 15 is provided with a contact piece 16 extending into the auxiliary pressure wire frame 7, and the wiring frame 15 and the contact piece 16 are made of conductive material. The wiring frame 15 and the contact piece 16 can increase the conductive area of ​​the contact to avoid the problem of poor contact. The contact piece 16 can fit against the lower side of the wire to prevent it from collapsing. The upper side of the contact piece 16 is provided with an anti-slip pattern 17 to enhance the friction force on the wire in the auxiliary pressure wire frame 7.

[0024] The upper end of the routing frame 15 is provided with a limit slot 18, and the end of the conductive member 6 is bent to form a limit edge 19, which is plugged into the limit slot 18 to improve the positioning performance of the conductive member 6 in the housing and prevent the end from being greatly deformed. The top of the inner hole of the auxiliary pressure wire frame 7 is provided with a V-shaped self-locking groove 20, which can maintain the locking force on the wire and prevent it from loosening.

[0025] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A double-clip clamping terminal, comprising a housing (1), the housing (1) being provided with a wiring hole (2) and an operating hole (3), the wiring hole (2) being provided with a main wire pressing frame (4), the operating hole (3) being provided with a screw (5), the screw (5) being threadedly connected with a screw hole at an upper end of the main wire pressing frame (4), a conductive member (6) being fixedly installed inside the housing (1), the end of the conductive member (6) being located inside the main wire pressing frame (4), and a wire passing through a secondary wire pressing frame (7) being fixedly clamped between the main wire pressing frame (4) and the conductive member (6) by tightening the screw (5), characterized in that: A secondary wire pressing frame (7) is arranged on the outer side of the main wire pressing frame (4); the main wire pressing frame (4), the secondary wire pressing frame (7) and the shell (1) are all connected in an upward and downward sliding manner; a support (8) is arranged on the inner wall of the shell; a lever spring (9) is installed on the support (8); and two ends of the lever spring (9) are respectively fixedly connected to the bottom of the main wire pressing frame and the secondary wire pressing frame.

2. A double-clamping terminal according to claim 1, characterized in that: The lever spring (9) comprises a torsion spring portion (10), a first elastic arm (12) and a second elastic arm (13); the torsion spring portion (10) is sleeved on the support (8); and the two sides of the torsion spring portion (10) are respectively hinged to the auxiliary wire pressing frame and the main wire pressing frame through the first elastic arm (12) and the second elastic arm (13).

3. A double-clip clamping terminal according to claim 2, characterized in that: The second elastic arm (13) is provided with a bent portion (14).

4. The double-clamping terminal according to claim 2, characterized in that: The torsion spring portion (10) is provided with a sliding sleeve hole (11).

5. The double-clamping terminal according to claim 1, characterized in that: A wiring frame (15) is fixedly mounted on the housing (1), the wiring frame (15) is located between the main wire pressing frame (4) and the auxiliary wire pressing frame (7), and the upper end of the wiring frame (15) is fixedly connected to the conductive member (6).

6. The double-clamping terminal according to claim 5, characterized in that: A contact piece (16) extending into the auxiliary pressure wire frame (7) is provided at the lower end of the wiring frame (15); the wiring frame (15) and the contact piece (16) are made of conductive material.

7. The double-clamping terminal according to claim 6, characterized in that: The upper side of the contact piece (16) is provided with anti-slip grooves (17).

8. The double-clamping terminal according to claim 5, characterized in that: The upper end of the wiring frame (15) is provided with a limiting slot (18), the end of the conductive member (6) is bent to form a limiting edge (19), and the limiting edge (19) is plugged into and matched with the limiting slot (18).

9. The double-clamping terminal according to claim 1, characterized in that: A V-shaped self-locking groove (20) is provided at the top of the inner hole of the auxiliary wire pressing frame (7).

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