A terminal

Abstract

A terminal block includes a housing, a conductive member is fixedly installed inside the housing, a wiring hole is provided on the surface of the housing, and a clamping assembly for pressing and fixing a wire to the conductive member is provided on the wiring hole. The clamping assembly includes a movable sleeve, a ball head pin and a spring. The movable sleeve is rotatably connected to the wiring hole, and a locking hole is provided on the side wall of the movable sleeve. During the rotation of the movable sleeve, the ball head pin can be elastically inserted into the locking hole under the action of the spring force. One end of the conductive member extends into the movable sleeve and is disposed opposite to the ball head pin to achieve clamping of the wire. In the present invention, the wiring and disconnection operations are realized by rotating the movable sleeve. When the movable sleeve rotates to a certain angle, the ball head pin is inserted into the locking hole. Under the action of the spring force, the ball head pin presses and fixes the wire on the conductive member. When the movable sleeve continues to rotate to a certain angle, the ball head pin disengages from the locking hole, thereby loosening the wire. The operation is convenient and fast, reducing the workload of the user and improving the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and particularly to a terminal block. Background Art

[0002] A terminal block is a fitting product used to achieve electrical connection and is classified as a connector in the industry; with the increasing degree of industrial automation and the increasingly strict and precise industrial control requirements, the usage of terminal blocks has gradually increased; with the development of the electronics industry, the application range of terminal blocks is more and more extensive, and the types are also increasing. A terminal block has at least two conductor connection components, and the conductor connection components are electrically connected to each other through a conductive member for current collection. A wiring device and a terminal block are disclosed in Chinese Patent No. CN111864419B to reduce the workload of users for connecting conductors. The traction frame has at least one clamping piece, and the clamping piece protrudes into a clamping space formed between two clamping legs. The clamping piece forms an introduction slope for inserting a conductor to be connected into the clamping space and clamps the conductor against the current bar at the clamping position by means of the clamping piece. The defects of the above-mentioned prior art are as follows: it is not convenient to access soft copper bundles, and it is rather laborious to disassemble, and it is necessary to use tools to press down the clamping legs, resulting in inconvenient operation. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the above-mentioned prior art and provides a terminal block that can achieve wiring and disconnection without a screwdriver tool, thereby reducing the workload.

[0004] The technical solution adopted by the present invention to solve its technical problems: A terminal block includes a housing, a conductive member is fixedly installed inside the housing, a wiring hole is provided on the surface of the housing, and a clamping assembly for pressing and fixing a wire to the conductive member is provided on the wiring hole. The clamping assembly includes a movable sleeve, a ball head pin and a spring. The movable sleeve is rotatably connected to the wiring hole, the upper end of the movable sleeve extends outside the wiring hole, a locking hole is provided on the side wall of the movable sleeve, and the diameter of the locking hole is smaller than the diameter of the round head of the ball head pin. A limiting guide groove communicating with the wiring hole is provided inside the housing, and the ball head pin and the spring are installed in the limiting guide groove. During the rotation of the movable sleeve, the ball head pin can be ejected into the locking hole under the elastic force of the spring, and one end of the conductive member extends into the movable sleeve and is arranged opposite to the ball head pin to realize clamping of the wire.

[0005] Further improvement: A flange is provided at the upper end of the movable sleeve, and a positioning groove is provided on the side wall of the flange. An elastic hook cooperating with the positioning groove is provided on the housing.

[0006] Further improvement: An adjusting knob for adjusting the pre-tightening force of the spring is rotatably installed in the middle of the housing. The adjusting knob is fixedly connected to a screw rod, a slider is threadedly connected to the screw rod, the slider is slidably connected to the limiting guide groove, and the slider is fixedly connected to the spring.

[0007] Further improved, a clamping piece is slidably installed in the housing, and clamping jaws are provided on the clamping piece. A cam groove is provided at the lower end of the movable sleeve, and a convex column that is slidably engaged with the cam groove is provided on the clamping piece.

[0008] Further improved, an eccentric hole is provided in the movable sleeve, and one end of the conductive member extends into the eccentric hole.

[0009] Further improved, an annular groove is provided on the side wall of the movable sleeve, an elastic beam coil is installed in the annular groove, a hollow groove hole for the elastic beam coil to pass through is provided on the annular groove, and the elastic beam coil is fixedly connected to a rope seat provided on the inner wall of the housing.

[0010] Compared with the existing invention, the beneficial effects of the present invention are as follows: The present invention realizes the wiring and disconnection operations by rotating the movable sleeve. When the movable sleeve rotates to a certain angle, the ball head pin is inserted into the lock hole. Under the elastic force of the spring, the ball head pin presses and fixes the wire on the conductive member. When the movable sleeve continues to rotate to a certain angle, the ball head pin disengages from the lock hole, thereby loosening the wire. The operation is convenient and fast, realizing wiring and disconnection without a screwdriver tool, reducing the workload of users, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present invention during wiring;

[0012] Figure 2 is a schematic structural diagram of the present invention during disconnection;

[0013] Figure 3 is Figure 1 a partially enlarged schematic structural diagram of part A in

[0014] Figure 4 is Figure 1 a partially enlarged schematic structural diagram of part B in

[0015] Description of the reference numerals in the drawings: 1. Housing, 2. Conductive member, 3. Wiring hole, 4. Movable sleeve, 5. Ball head pin, 6. Spring, 7. Lock hole, 8. Limit guide groove, 9. Positioning groove, 10. Elastic catch, 11. Adjusting knob, 12. Screw rod, 13. Slide block, 14. Clamping piece, 15. Through hole, 16. Cam groove, 17. Convex column, 18. Eccentric hole, 19. Conductive ring, 20. Annular groove, 21. Elastic beam coil, 22. Hollow groove hole, 23. Rope seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present invention will be further described below with reference to the drawings:

[0017] Embodiment 1: A terminal block comprises a shell 1, in which a conductive part 2 is fixedly installed, a wiring hole 3 is provided on the surface of the shell 1, and a clamping assembly for pressing and fixing the wire to the conductive part 2 is provided on the wiring hole 3, the clamping assembly comprises a movable sleeve 4, a ball pin 5 and a spring 6, the movable sleeve 4 is rotatably connected to the wiring hole 3, the upper end of the movable sleeve 4 extends to the outside of the wiring hole 3, a locking hole 7 is provided on the side wall of the movable sleeve 4, the diameter of the locking hole 7 is smaller than the diameter of the round head of the ball pin 5, a limiting guide groove 8 connected to the wiring hole 3 is provided on the inside of the shell 1, the ball pin 5 and the spring 6 are installed in the limiting guide groove 8, during the rotation of the movable sleeve 4, the ball pin 5 can be bounced into the locking hole 7 under the elastic force of the spring 6, one end of the conductive part 2 is extended in the movable sleeve 4 and is arranged opposite to the ball pin 5 to achieve clamping of the wire.

[0018] Working principle: when in use, insert the wire into the movable sleeve 4, and the wire contacts the conductive member 2 at the bottom of the wiring hole 3. Figure 1 As shown in FIG. 1 , when the movable sleeve 4 rotates to a certain angle, the ball pin 5 pops into the lock hole 7. Under the elastic force of the spring 6, the ball pin presses the wire in the movable sleeve 4 onto the conductive member 2. Figure 2 As shown, when the movable sleeve 4 continues to rotate to a certain angle (such as 180 degrees), the ball pin 5 disengages from the lock hole 7 and retracts into the limiting guide groove 8, thereby loosening the wire. The operation is convenient and quick, and the wiring and disconnection without screwdriver tools are realized, which reduces the user's workload and improves work efficiency. The left and right ends of the conductive member 2 in the housing 1 are connected respectively, so as to realize the conduction of the circuits on both sides. In actual use, when the elastic force of the spring 6 is small, it is not necessary to rotate the movable sleeve 4, and the wire can be directly plugged in and out for wiring and disconnection operations.

[0019] Preferably, a flange is provided at the upper end of the movable sleeve 4, which can facilitate the user to pinch the flange to twist the movable sleeve 4, and a positioning groove 9 is provided on the side wall of the flange to increase the friction. When there is only one positioning groove 9, the positioning groove 9 and the lock hole 7 are distributed on both sides of the movable sleeve 4, and the shell 1 is provided with an elastic hook 10 that cooperates with the positioning groove 9, which can prevent the movable sleeve 4 from loosening and ensure that the movable sleeve 4 is rotated into place when connecting the wires.

[0020] Preferably, an adjusting knob 11 for adjusting the preload of the spring 6 is rotatably mounted in the middle of the housing 1, the adjusting knob 11 is fixedly connected to a screw rod 12, a slider 13 is threadedly connected to the screw rod 12, the slider 13 is slidably connected to the limiting guide groove 8, and the slider 13 is fixedly connected to the spring 6. A portion of the adjusting knob 11 is exposed outside the housing 1, and rotating the adjusting knob 11 can drive the screw rod 12 to rotate, and the slider 13 is driven by the thread to act and move on the limiting guide groove 8, thereby adjusting the elastic force of the spring 6. When the elastic force of the spring 6 is large, the ball pin 5 can be locked to play a safety role.

[0021] Embodiment 2: As shown in the appendix Figure 3 As shown, on the basis of Embodiment 1, a clamping piece 14 is slidably installed in the housing 1. A through hole 15 for the power supply wire and the conductive member 2 to pass through is provided on the clamping piece 14. A cam groove 16 is provided at the lower end of the movable sleeve 4, and a convex column 17 slidably engaged with the cam groove 16 is provided on the clamping piece 14. When in use, the wire is passed through the through hole 15. When the movable sleeve 4 rotates from the Figure 2 state to the Figure 1 state, the cam groove 16 drives the clamping piece 14 to approach the conductive member 2, the opening of the through hole 15 becomes smaller, and the wire is tightened and fixed on the conductive member 2. When the movable sleeve 4 rotates from the Figure 1 state to the Figure 2 state, the cam groove 16 drives the clamping piece 14 to move away from the conductive member 2, the opening of the through hole 15 becomes larger, and the wire is loosened. In addition, there is a bend between the clamping piece 14 and the conductive member 2, which can accommodate the bottom end of the wire, making the wire installation more firm and not easily falling off.

[0022] Embodiment 2: As shown in the appendix Figure 4 As shown, on the basis of Embodiment 1 or 2, an eccentric hole 18 is provided in the movable sleeve 4, and one end of the conductive member 2 extends into the eccentric hole 18. When the movable sleeve 4 rotates from the Figure 2 state to the Figure 1 state, the eccentric hole 18 drives one end of the conductive member 2 to shift inwards to press the wire, and cooperate with the ball head pin 5 to clamp, improving the clamping effect. The positions of the eccentric hole 18 and the ball head pin 5 are staggered up and down, which can bend the wire and prevent the ball head pin 5 from being pushed open.

[0023] Preferably, a conductive ring 19 is provided on the conductive member 2, and the conductive ring 19 is sleeved with the eccentric hole 18. The conductive ring 19 can make the conductive member 2 fit the inner wall of the eccentric hole 18, avoiding the problem that when the movable sleeve 4 rotates from the Figure 1 state to the Figure 2 state, a gap is generated between the back of the conductive member 2 and the eccentric hole 18, causing the wire to be easily inserted into the gap. The conductive ring 19 can also limit the positions of the wire and the end of the conductive member 2, increase the contact area between the conductive member 2 and the wire, avoid the end of the conductive member 2 from running off, thereby improving the wiring effect and avoiding the problem of poor contact.

[0024] Preferably, an annular groove 20 is provided on the side wall of the movable sleeve 4, an elastic beam coil 21 is installed in the annular groove 20, a hollow groove hole 22 for the elastic beam coil 21 to pass through is provided on the annular groove 20, and the elastic beam coil 21 is fixedly connected to a rope seat 23 provided on the inner wall of the housing 1. When in use, the wire is passed through the elastic beam coil 21. When the movable sleeve 4 rotates from the Figure 2 state to the Figure 1 state, the elastic beam coil 21 is buckled into the hollow groove hole 22, the opening of the elastic beam coil 21 becomes smaller, and the wire bundle is tightened. When the movable sleeve 4 rotates from the Figure 1The state rotates to Figure 2 When in the state, the elastic beam coil 21 is pushed away from the hollow slot 22, the opening of the elastic beam coil 21 becomes larger, and the wire is loosened. The above structure can make the wire more firmly installed at the upper end position of the movable sleeve 4 and is not easily disturbed.

[0025] Although the present invention has been illustrated and described with reference to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details may be made within the scope of the claims.

Claims

1. A terminal block, comprising a housing (1), a conductive member (2) fixedly installed in the housing (1), a wiring hole (3) provided on the surface of the housing (1), and a clamping assembly for pressing and fixing a wire to the conductive member (2) provided on the wiring hole (3), characterized in that: The clamping assembly includes a movable sleeve (4), a ball head pin (5) and a spring (6). The movable sleeve (4) is rotatably connected to the wiring hole (3). The upper end of the movable sleeve (4) extends outside the wiring hole (3). A locking hole (7) is provided on the side wall of the movable sleeve (4). The diameter of the locking hole (7) is smaller than the diameter of the round head of the ball head pin (5). A limiting guide groove (8) communicating with the wiring hole (3) is provided inside the housing (1). The ball head pin (5) and the spring (6) are installed in the limiting guide groove (8). During the rotation of the movable sleeve (4), the ball head pin (5) can be ejected into the locking hole (7) under the elastic force of the spring (6). One end of the conductive member (2) extends into the movable sleeve (4) and is arranged opposite to the ball head pin (5) to clamp the wire; A clamping piece (14) is slidably installed in the housing (1). A through hole (15) for the wire and the conductive member (2) to pass through is provided on the clamping piece (14). A cam groove (16) is provided at the lower end of the movable sleeve (4). A convex column (17) slidably matched with the cam groove (16) is provided on the clamping piece (14); An eccentric hole (18) is provided inside the movable sleeve (4). One end of the conductive member (2) extends into the eccentric hole (18). A circular groove (20) is provided on the side wall of the movable sleeve (4). An elastic beam coil (21) is installed in the circular groove (20). A hollow groove hole (22) for the elastic beam coil (21) to pass through is provided on the circular groove (20). The elastic beam coil (21) is fixedly connected to a rope seat (23) provided on the inner wall of the housing (1).

2. The terminal block according to claim 1, characterized in that: A flange is provided at the upper end of the movable sleeve (4). A positioning groove (9) is provided on the side wall of the flange. An elastic hook (10) matched with the positioning groove (9) is provided on the housing (1).

3. The terminal block according to claim 1, characterized in that: An adjusting knob (11) for adjusting the pre-tightening force of the spring (6) is rotatably installed in the middle of the housing (1). The adjusting knob (11) is fixedly connected to a screw rod (12). A slider (13) is threadedly connected to the screw rod (12). The slider (13) is slidably connected to the limiting guide groove (8). The slider (13) is fixedly connected to the spring (6).

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