CN113782352B - A three-in-one-out phase change switch - Google Patents

Abstract

The invention discloses a three-input-one-out phase change switch, which relates to the technical field of phase change switches, and includes a switch assembly and a terminal block. The terminal block is provided with four terminal posts and a connection mechanism. Each of the connection mechanisms One-to-one electrical connection with each of the terminal posts; the input end of the switch assembly is electrically connected to the terminal posts; the wiring mechanism includes a wiring connection seat and a wiring adjustment lever, and the wiring adjustment lever is used to drive the terminals. The above-mentioned wiring connecting seat is used for coiling and fixedly connecting the connecting wires. In the present invention, the wiring mechanism on the wiring terminal row is provided with a combined structure of a wiring connection seat and a wiring adjustment rod. When connecting the connection wires, the wiring connection seat is driven by the wiring adjustment rod to perform a coiled fixed connection to the connection wires. Compared with the existing method of fixing by screw fastening, the contact area of the wire connection is significantly increased, the stability of the connection is improved, and the problem of poor contact is prevented.

Description

A three-in-one-out commutation switch

technical field

The invention relates to the technical field of phase change switches, in particular to a three-input and one-out phase change switch.

Background technique

It is well known that there are a large number of single-phase loads in the distribution network. Due to the unbalanced distribution of single-phase loads and the asynchronous input, the imbalance of three-phase loads has become a prominent problem in the operation and maintenance of low-voltage power grids. The three-phase power system The status of voltage balance is one of the main indicators of power quality. Unbalanced three-phase will lead to additional heating and vibration of the rotating machine, increased magnetic flux leakage and local overheating of the transformer, increased line loss of the power grid, and misoperation of various protection and automatic devices, etc. , the commutation switch is a necessary device to deal with the three-phase unbalance problem on the current grid. When the current of the live wire of a certain phase is too large, the live wire connected to the user side can be switched through the phase change switch, so that the live wire connected to the user side can be switched from the current phase live wire to another phase live wire to reduce the load of the phase live wire. By balancing the current of each phase Improve the utilization and availability of grid power.

For example, the application publication number is CN20881975U, and the name is a Chinese utility model patent named "A One-line Three-terminal Type Change Switch". The inner phase line output terminal is connected with a phase line output wire, and the phase line output wire is respectively electrically connected to the phase line outlet first terminal, the phase line outlet second terminal and the phase line outlet provided at one end of the main body of the phase change switch through the connecting body. The third connection terminal, the phase line outlet side of the third connection terminal is provided with a neutral line output connection terminal. According to the above application, there is no need to add additional terminal blocks by having three terminal blocks at the outgoing end of the phase line, which not only facilitates the use of the user, but also saves the user's use cost.

Similarly, the application publication number is CN109038621A, and the invention patent application titled "An Intelligent Reversing Switch" has an N incoming terminal, an L1 incoming terminal, an L2 incoming terminal and an The L3 incoming line terminal is set up with multiple incoming line terminals connected to live wire terminals, and controlled by an independent commutation electromagnetic switch, in order to ensure the stable operation of the commutation electromagnetic switch and tripping electromagnetic switch.

The disadvantage of the prior art is that, as in the above-mentioned application, the connection structure between the terminal and the wire on the existing reversing switch is the same as that of the existing industrial wire connector, which is a section sealed in the insulating plastic. There are holes at both ends of the metal sheet to insert the wire, and then fasten or loosen it with screws. This traditional connection method uses screw fastening to connect and fix the wires. During use, the wires are prone to heating and deformation, which affects the stability of the connection. , causing the wire to fall off. At the same time, the contact surface between the wire and the metal sheet is small, which is prone to poor contact, which affects the stability of the power supply and causes heat generation.

Contents of the invention

The object of the present invention is to provide a three-in-one-out phase change switch to solve the above-mentioned shortcomings in the prior art.

In order to achieve the above object, the present invention provides the following technical solution: a three-in-one-out phase change switch, including a switch assembly and a terminal block, the terminal block is provided with four terminal posts and a wiring mechanism, and each of the wiring terminals The mechanism is electrically connected to each of the terminal posts in one-to-one correspondence; the input end of the switch assembly is electrically connected to the terminal post; the wiring mechanism includes a wiring connection seat and a wiring adjustment lever, and the wiring adjustment lever is used for It is used to drive the wiring connection seat to perform winding and fixed connection to the connecting wire.

As a further description of the above technical solution: the switch assembly includes a first switch, a second switch and a controllable switch, the two input ends of the first switch are connected to the terminal, and the One of the two input ends is connected to the output end of the first switch, the other end is connected to the terminal, and the output end of the second switch is connected to the controllable switch.

As a further description of the above technical solution: a triac is connected in parallel between the input end and the output end of the controllable switch.

As a further description of the above technical solution: the wiring connection seat includes a fixed seat arranged in the terminal row, the fixed seat is rotatably provided with a sprocket seat, and a connecting sleeve is fixed on the sprocket seat, A plurality of conductive connecting pieces are arranged on the outer side of the connecting sleeve on the sprocket seat, and the connection adjusting rod is embedded and connected in the connecting sleeve.

As a further description of the above technical solution: the fixed base is provided with a loop adjustment assembly, the loop adjustment assembly is provided with a wire sleeve mechanism, the connecting wire runs through the wire sleeve mechanism, and the loop adjustment assembly It is in transmission connection with the wiring connection seat, and when the wiring connection seat is coiled and connected to the connecting wires, the coiling adjustment assembly is synchronously driven to drive the wire cover mechanism to move so as to evenly arrange and fix the connecting wires.

As a further description of the above technical solution: the coil adjustment assembly includes two adjustment screw rods that are rotatably arranged on the fixed seat, and the bottom ends of the two adjustment screw rods are fixedly sleeved with rotating gears. The gear meshes with the sprocket seat, and the wire sleeve mechanism is helically sleeved on the two adjusting screw rods.

As a further description of the above-mentioned technical solution: a wiring fixture is fixedly sleeved in the wiring adjusting lever, and the wiring fixing piece is assembled so that when the wiring adjusting lever is pressed down and docked with the connecting sleeve, the wiring The fixing piece fixes the connecting wires wound and connected on the conductive connecting sheet.

As a further description of the above-mentioned technical solution: the wiring fixing member includes a disc seat, the disc seat is fixedly sleeved on the wiring adjustment rod, and a plurality of wedge-shaped expansion parts are fixed on the bottom of the disc seat, and the wedge-shaped The position of the expansion part corresponds up and down to the position of the conductive connecting piece.

As a further description of the above technical solution: the wiring fixture also includes an adjusting link and an arc-shaped folding frame, the arc-shaped folding frame is rotatably connected to the top of the conductive connecting piece, and one end of the adjusting link is rotatably connected to the On the peripheral side of the disc seat, the other end of the adjusting link is rotatably connected with the arc-shaped folding frame.

As a further description of the above technical solution: the wiring adjustment lever is also provided with a connection locking piece, the connection locking piece is used to fix the wiring adjustment lever and the connection sleeve after the wiring adjustment lever is pressed down and adjusted .

In the above technical solution, the present invention provides a three-in-one-out reversing switch. The reversing switch is provided with a combined structure of a wiring connection seat and a wiring adjustment rod by setting the wiring mechanism on the terminal block. When the wires are connected, the wire connection seat is driven by the wire adjustment lever to perform a coiled fixed connection on the wires. Compared with the existing method of fixing by screw fastening, the contact area of the wire connection is significantly increased, and the stability of the connection is improved. To prevent the problem of poor contact, at the same time, the side-by-side coil connection is convenient for heat dissipation. Compared with the traditional screw fixation, the coil coil connection will not cause deformation and damage to the wire, and it is convenient for repeated connection. Cutting off and reconnecting makes it easier to overhaul and disassemble.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings that are required in the embodiments. Obviously, the accompanying drawings in the following description are only described in the present invention For some embodiments of the present invention, those skilled in the art can also obtain other drawings according to these drawings.

FIG. 1 is a schematic diagram of the overall structure of a three-in-one-out commutation switch provided by an embodiment of the present invention;

Fig. 2 is a front view structural schematic diagram of a terminal block provided by an embodiment of the present invention;

3 is a schematic diagram of the rear structure of the terminal block provided by the embodiment of the present invention;

4 is a schematic structural diagram of a wiring mechanism provided by an embodiment of the present invention;

Fig. 5 is a schematic diagram of the connection structure between the wiring connection socket and the connecting wire provided by the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a wiring connection socket provided by an embodiment of the present invention;

Fig. 7 is a schematic diagram of the disassembled structure of the wiring adjustment rod and the connecting sleeve provided by the embodiment of the present invention;

Fig. 8 is a schematic cross-sectional structure diagram of a connecting sleeve provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a wiring fixture provided by an embodiment of the present invention;

Fig. 10 is a schematic diagram of the connection state of the wiring mechanism and the connecting wire provided by the embodiment of the present invention;

Fig. 11 is a schematic structural view of the coil adjustment assembly provided by the embodiment of the present invention;

Fig. 12 is a schematic structural diagram of a wire sleeve mechanism provided by an embodiment of the present invention;

Fig. 13 is a conduction circuit diagram of phase A of a three-in-one-out commutation switch provided by an embodiment of the present invention;

Fig. 14 is a B-phase conduction circuit diagram of a three-in-one-out commutation switch provided by an embodiment of the present invention;

Fig. 15 is a C-phase conduction circuit diagram of a three-in-one-out commutation switch provided by an embodiment of the present invention.

Explanation of reference signs:

1. The first switch; 11. The first switch; 12. The second switch; 2. The second switch; 21. The third switch; 22. The fourth switch; 3. Controllable switch; 4. Terminal block; 5. Terminal post; 6. Wiring mechanism; 61. Wiring connection seat; 611. Fixed seat; 612. Spur seat; 613. Connection sleeve seat; 6130. Locking groove; 614. Conductive connecting piece; 615. Wiring hole; 62. Wiring adjustment rod; 63. Wiring fixing part; 631. Disc seat; 632. Adjusting connecting rod; 633. Wedge-shaped expansion part; 634. Arc folding frame; 642, bar-shaped opening; 643, locking frame; 7, connecting wire; 8, coiling adjustment assembly; 81, rotating gear; 82, adjusting screw rod; 9, line sleeve mechanism; 91, connecting nut seat; Rotating shaft; 93, wire driving wheel; 94, driven roller; 95, driving bevel gear; 96, driven bevel gear.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Please refer to Figures 1-15, the embodiment of the present invention provides a technical solution: a three-in-one-out phase change switch, including a switch assembly and a terminal block 4, and the terminal block 4 is provided with four terminal posts 5 and wiring Mechanism 6, each wiring mechanism 6 is electrically connected to each terminal post 5 in one-to-one correspondence; the input end of the switch assembly is electrically connected to the terminal post 5; the wiring mechanism 6 includes a wiring connection seat 61 and a wiring adjustment lever 62, and the wiring adjustment lever 62 is used to drive the wiring connection seat 61 to perform looping and fixed connection to the connecting wire 7 .

Specifically, this embodiment provides a three-in-one-out commutation switch, which is used to deal with the unbalanced three-phase problem on the power grid. The three input terminals and one output terminal of the switch assembly are respectively connected to the four The terminal blocks 5 are independently connected one by one, and at the same time, the three wiring mechanisms 6 electrically connected to the terminal blocks 5 correspondingly connected to the three input terminals on the terminal block 4 are connected to the three-phase power supply by connecting wires, and the terminal block 4 is connected to the three-phase power supply. A wiring connection mechanism 6 electrically connected to the terminal 5 corresponding to the output terminal is connected to the load through the connecting wire 7, and the switch component is used to switch between different input power sources, that is, the live wire is connected to the load, that is, the load side can be switched through the switch component. fire wire. Simultaneously wiring mechanism 6 is made up of wiring connection seat 61 and wiring adjustment lever 62, has on the wiring connection seat 61 the wiring hole 615 that is used for inserting connection wire 7 to use, when connecting wire 7 and wiring mechanism 6 are adjusted, will connect Conductor 7 is plugged in wiring hole 615, promptly realizes connecting one end of connecting conductor 7 and wiring connection seat 61, then drives wiring connection seat 61 to rotate by wiring adjustment lever 62, while rotating, connects conductor 7 to manually carry out In order to realize the 7 turns of the connecting wire and fix it on the wiring connection seat 61, that is, the connecting wire 7 is electrically connected to the wiring connection seat 6, and finally the connection between the connecting wire 7 and the wiring mechanism 6 is completed.

In the three-in-one-out reversing switch provided in this embodiment, when the wiring mechanism 6 on the terminal block 4 is connected to the connecting wire 7, the wiring adjusting rod 62 drives the wiring connecting seat 61 to circle the connecting wire 7. The winding fixed connection, compared with the existing screw fastening, significantly increases the connection contact area of the connecting wire 7, improves the stability of the connection, and prevents the problem of poor contact. At the same time, the parallel winding connection is convenient for heat dissipation. Compared with the traditional fixing by screws, the coiled fixed connection will not cause deformation and damage to the connecting wire 7, and is convenient for repeated connection and use. It does not need to cut and reconnect the connecting wire 7, and it is more convenient for maintenance and disassembly.

In another embodiment provided by the present invention, as shown in Figures 13-15: the switch assembly includes a first switch 1, a second switch 2, and a controllable switch 3, and the two input terminals of the first switch 1 are connected to the wiring One of the two input terminals of the second switch 2 is connected to the output terminal of the first switch 1 , the other end is connected to the terminal 5 , and the output terminal of the second switch 2 is connected to the controllable switch 3 . Specifically, the first switch 1 includes an open-close switch, that is, the first switch 1 includes a first switch 11 and a second switch 12 connected in series, and one end of the first switch 11 is connected to the A-phase power supply, and the second switch 12, one end communicates with the B-phase power supply, and the second switch 2 includes an open-close switch, that is, the second switch 2 includes a third switch 21 and a fourth switch 22 connected in series, and one end of the third switch 21 is connected to the first Between the switch 11 and the second switch 12, one end of the fourth switch 22 is connected to the input end of the controllable switch 3, and the controllable switch 3 is a normally open output switch. Optionally, the first switch 1 and the second switch 2 Both are HFE52 relays, and the controllable switch 3 is an HFE29 relay; when phase A is turned on, the first switch 11 of the first switch 1 is closed, the second switch 12 is turned off, and the third switch of the second switch 2 is at the same time 21 is closed, and the fourth switch 22 is turned off; when the B phase is turned on, the first switch 11 in the first switch 1 is turned off, the second switch 12 is closed, and the third switch 21 in the second switch 2 is closed at the same time. The fourth switch 22 is turned off; when the phase C is turned on, the third switch 21 of the second switch 2 is turned off, and the fourth switch 22 is turned on.

In yet another embodiment provided by the present invention, preferably, a bidirectional thyristor is connected in parallel between the input end and the output end of the controllable switch 3 . Specifically, in the process of switching the first switch 1 and the second switch 2, the load needs to be cut off, otherwise there will be arcing, so the controllable switch 3 is used to cut off the load. In order to protect the controllable switch 3, through A bidirectional thyristor is connected in parallel between the input terminal and the output terminal of the controllable switch 3, and the bidirectional thyristor is first opened before the bidirectional thyristor is connected in parallel between the input terminal and the output terminal of the action controllable switch 3, and then Disconnect the controllable switch 3, and then disconnect the triac, because the triac is an electronic switch, so arcing is avoided and the controllable switch 3 is protected.

In yet another embodiment provided by the present invention, the wiring connection seat 61 includes a fixed seat 611 arranged in the terminal block 4, a toothed plate seat 612 is rotatably arranged on the fixed seat 611, and a connecting sleeve seat 613 is fixed on the toothed plate seat 612. A plurality of conductive connecting pieces 614 are arranged on the sprocket seat 612 outside the connecting sleeve 613 , and the wiring adjusting rod 62 is embedded and connected in the connecting sleeve 613 . Specifically, when the wiring connection seat 61 is coiled and fixedly connected to the connecting wire 7, the connection sleeve 613 is provided with a wiring hole 615, and a plurality of conductive connecting pieces 614 are located on the outside of the connection sleeve 613 to form a circular equiangular distribution, and There is a certain gap between the plurality of conductive connecting pieces 614 and the connecting sleeve 613, the wiring adjusting rod 62 is embedded in the connecting sleeve 613, and the wiring adjusting rod 62 and the connecting sleeve 613 are kept locked in axial rotation, And it can be adjusted up and down on the connecting sleeve seat 613. When the connecting wire 7 is coiled and connected, one end of the wire is first embedded in the wiring hole 615, and then the staff rotates the wiring adjusting lever 62, and the connecting sleeve is driven by the wiring adjusting lever 62. The seat 613 rotates, and the connecting sleeve 613 drives the connecting wire 7 coils to be connected to a plurality of conductive connecting pieces 614, so as to realize fixing the connecting wire 7, and through the multiple conductive connecting pieces 614, the connecting wire 7 is coiled and fixedly connected. Compared with the existing fixing by screw fastening, the contact area of the connecting wire 7 is significantly increased, the stability of the connection is improved, the problem of poor contact is prevented, and at the same time, it is convenient for heat dissipation, and the connecting wire 7 will not be deformed and damaged. Easy to connect and use repeatedly.

In yet another embodiment provided by the present invention, the fixed seat 611 is provided with a loop adjustment assembly 8, and the loop adjustment assembly 8 is provided with a wire sleeve mechanism 9, the connecting wire 7 penetrates through the wire sleeve mechanism 9, and the loop adjustment assembly 8 is connected to the wire sleeve mechanism 9. The wiring connection seat 61 is driven and connected. When the wiring connection seat 61 is coiled and connected to the connecting wire 7, the coiling adjustment assembly 8 is synchronously driven to drive the wire sleeve mechanism 9 to move so as to evenly arrange and fix the connecting wire 7. The winding adjustment assembly 8 includes two adjustment screw rods 82 that are rotatably arranged on the fixed seat 611. The bottom ends of the two adjustment screw rods 82 are fixedly sleeved with a rotating gear 81, and the rotating gear 81 is meshed with the sprocket seat 612. The sleeve mechanism 9 is helically sleeved on the two adjusting screw rods 82 . Specifically, the winding adjustment assembly 8 is arranged on the fixed seat 611 at the position where the connecting wire 7 is plugged into the incoming line. Pass the connecting wire 7 through the wire sleeve mechanism 9, when the connecting sleeve 613 is driven by the wiring adjustment rod 62 to rotate and connect the connecting wire 7 in a circle, the connecting sleeve 613 drives the sprocket seat 612 to rotate, and the sprocket seat 612 passes through The rotating gear 81 rotates, and the rotating gear 81 drives the adjusting screw rod 82 to rotate, and the adjusting screw rod 82 rotates to drive the wire cover mechanism 9 on it to adjust up and down, that is, to realize the synchronous driving of the connecting seat 61 when the connecting wire 7 is coiled and connected. The adjustment component 8 drives the wire sleeve mechanism 9 to move to realize the uniform winding of the connecting wires 7 and fix them on a plurality of conductive connecting pieces 614, so that the coiled connecting wires 7 are evenly arranged and will not be piled up on each other, further increasing the The contact area between the connecting wires 7 and the plurality of conductive connecting pieces 614 can prevent the connecting wires 7 from accumulating on each other to facilitate heat dissipation.

In yet another embodiment provided by the present invention, the wiring fixing rod 62 is fixedly sleeved with a wiring fixing member 63, and the wiring fixing member 63 is assembled so that when the wiring adjusting lever 62 is pressed down and docked with the connecting sleeve 613, the wiring fixing member 63 Fix the connecting wire 7 wound and connected on the conductive connecting piece 614 . The wiring fixture 63 includes a disc seat 631, which is fixedly sleeved on the wiring adjustment rod 62, and a plurality of wedge-shaped expansion parts 633 are fixed on the bottom of the disc seat 631, and the positions of the wedge-shaped expansion parts 633 and the conductive connecting piece 614 The position corresponds up and down.

Specifically, after the wiring adjustment rod 62 drives the wiring connection seat 61 to rotate to realize the fixed connection of the connecting wire 7 turns around, the staff presses down the wiring adjustment rod 62 and inserts it into the connection sleeve 613. When the wiring adjustment rod 62 moves down , it drives the disc seat 631 on it to move down synchronously, and the downward movement of the disc seat 631 drives the wedge-shaped expansion part 633 connected at the bottom to move down. The appropriate amount of the wedge-shaped expansion part 633 is equal to the number of the conductive connecting pieces 614, and The position of the expansion part 633 corresponds to the position of the conductive connection piece 614 up and down, so that when the wedge-shaped expansion part 633 moves down, it abuts against the inner side of the conductive connection piece 614 and expands the conductive connection piece 614, so that it is coiled and fixed on the conductive connection piece 614 The connecting wire 7 on the top is tensioned to further improve the stability of the connection between the connecting wire 7 and the conductive connecting sheet 614.

In yet another embodiment provided by the present invention, preferably, the wire fixing member 63 further includes an adjusting link 632 and an arc-shaped folding frame 634, the arc-shaped folding frame 634 is rotatably connected to the top of the conductive connecting piece 614, and one end of the adjusting link 632 Rotationally connected to the peripheral side of the disc seat 631 , the other end of the adjusting link 632 is rotatably connected to the arc-shaped folding frame 634 . Specifically, the outer side of the arc-shaped folding frame 634 is provided with a hinge seat that is rotatably connected to the other end of the adjustment link 632 , and the wiring adjustment lever 62 is pressed down and inserted into the connection sleeve 613 to cooperate with the wedge-shaped expansion part 633 to move down from the inner side of the conductive connection piece 614 . Butt against and expand the conductive connecting piece 614 so that the connecting wire 7 fixed on the conductive connecting piece 614 is tightened, and at the same time, when the disc seat 631 moves down, the adjustment link 632 drives the top of the conductive connecting piece 614 to rotate and connect. The arc-shaped folding frame 634 rotates, and the arc-shaped folding frame 634 rotates to the outside of the conductive connecting piece 614 to perform secondary fixation on the connecting wire 7 wound around the outside of the conductive connecting piece 614, further improving the connection between the connecting wire 7 and the conductive connecting piece 614. The stability of the connection prevents poor contact.

In yet another embodiment provided by the present invention, a connection locking member 64 is also provided in the wiring adjustment lever 62, and the connection locking member 64 is used to connect the wiring adjustment lever 62 to the connection sleeve 613 after the wiring adjustment lever 62 is pressed down and adjusted. to fix.

Specifically, the central axis of the wire adjustment rod 62 has a threaded hole through it, and the connection locking member 64 includes an adjustment core rod 641 whose route is embedded in the screw hole. Bar-shaped opening 642, and in the bar-shaped opening 642, a lock frame 643 is rotated. When one end of the lock frame 643 is located inside the screw hole, and the other end is flush with the outside of the bar-shaped opening 642, the bottom end of the connecting sleeve 613 has A locking groove 6130 used in conjunction with the locking frame 643. When the wiring adjustment rod 62 is pressed down and embedded in the connection sleeve 613, the staff rotates and adjusts the adjustment core rod 641 in the wiring adjustment rod 62, and the adjustment core rod 641 moves down The abutting locking frame 643 is located at the inner end of the screw hole, so that the locking frame 643 rotates, and finally the outer end of the locking frame 643 rotates and protrudes to the outside of the wiring adjustment rod 62 and extends into the locking groove 6130, thereby realizing the connection of the wiring The adjusting rod 62 is fixed with the connecting sleeve 613 .

In yet another embodiment provided by the present invention, preferably, the wire cover mechanism 9 includes a connecting nut seat 91, which is screwed on the adjusting screw rod 82, and a connecting rotating shaft 92 is horizontally rotated on the connecting nut seat 91, And the connecting shaft 92 is fixedly sleeved with a wire drive wheel 93, one end of the connecting shaft 92 is fixed with a driven bevel gear 96, and the connecting nut seat 91 is rotatably provided with a driven roller 94, and the driven roller 94 is connected to the adjustment wire. The rods 82 abut against each other to realize the synchronous driving of the driven roller 94 to rotate when the adjustment screw 82 rotates. The driven roller 94 is connected with a driving bevel gear 95 through a connecting shaft, and the driving bevel gear 95 meshes with the driven bevel gear 96 , that is, when the adjusting screw 82 rotates the line sleeve mechanism 9 to lift and adjust to realize that the connecting wire 7 is evenly coiled and fixed on a plurality of conductive connecting pieces 614, the adjusting screw 82 synchronously drives the driven roller 94 to rotate, and the driven The roller 94 drives the driven bevel gear 96 to rotate through the driving bevel gear 95, and the driven bevel gear 96 cooperates with the connecting rotating shaft 92 to drive the wire driving wheel 93 to rotate, and the wire driving wheel 93 realizes the automatic driving of the incoming line, and realizes that the connecting wire 7 is connected. When the coil connection is fixed, the connection wire 7 is automatically and stably supplied to prevent the manual feed-in from being unable to stably supply the connection wire and cause the connection wire 7 to be loosened. Supply connecting wire 7, prevent that coiling is that the terminal of connecting wire 7 falls off from wiring connection seat 61, causes that connecting wire 7 cannot be coiled and connected and fixed.

Certain exemplary embodiments of the present invention have been described above only by way of illustration, and it goes without saying that those skilled in the art can use various methods without departing from the spirit and scope of the present invention. The described embodiments are modified. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims (7)

1. A three-in-one-out phase change switch, including a switch assembly and a terminal block (4), characterized in that four terminal posts (5) and a connection mechanism (6) are arranged on the terminal block (4) ), each of the wiring mechanisms (6) is electrically connected to each of the wiring posts (5) in one-to-one correspondence; the input end of the switch assembly is electrically connected to the wiring posts (5); the wiring mechanism (6) It includes a wiring connection seat (61) and a wiring adjustment lever (62), and the wiring adjustment lever (62) is used to drive the wiring connection seat (61) to coil and fix the connecting wire (7); The wiring connection seat (61) includes a fixed seat (611) arranged in the terminal row (4), and a toothed plate seat (612) is rotatably arranged on the fixed seat (611), and the toothed plate seat (612) is fixed with a connection sleeve (613), and a plurality of conductive connecting pieces (614) are arranged on the outer side of the connection sleeve (613) on the tooth disc seat (612), and the wiring adjustment rod (62) Embedded in the connection sleeve (613); The fixed seat (611) is provided with a loop adjustment assembly (8), the loop adjustment assembly (8) is provided with a wire sleeve mechanism (9), and the connecting wire (7) runs through the wire sleeve mechanism (9), the loop adjustment component (8) is connected to the wiring connection seat (61) in transmission, and when the wiring connection seat (61) performs loop connection to the connecting wire (7), it drives the coil synchronously The winding adjustment component (8) drives the wire sleeve mechanism (9) to move to realize the uniform winding and fixing of the connecting wire (7); The winding adjustment assembly (8) includes two adjustment screw rods (82) that are rotatably arranged on the fixed seat (611), and the bottom ends of the two adjustment screw rods (82) are fixedly sleeved with rotating gears (81), the rotating gear (81) meshes with the sprocket seat (612), and the wire sleeve mechanism (9) is spirally sleeved on the two adjusting screw rods (82). 2. A three-in-one-out reversing switch according to claim 1, characterized in that the switch assembly includes a first switch (1), a second switch (2) and a controllable switch (3) , the two input terminals of the first switch (1) are connected to the terminal (5), and one of the two input terminals of the second switch (2) is connected to the output of the first switch (1) end, the other end is connected to the terminal (5), and the output end of the second transfer switch (2) is connected to the controllable switch (3). 3. The three-input-one-out commutation switch according to claim 2, characterized in that a bidirectional thyristor is connected in parallel between the input end and the output end of the controllable switch (3). 4. A three-input-one-out reversing switch according to claim 2, characterized in that, a wiring fixture (63) is fixedly sleeved in the wiring adjusting lever (62), and the wiring fixing piece (63 ) is assembled so that when the wiring adjusting lever (62) is pressed down to dock with the connecting sleeve (613), the connecting wire ( 7) Fix it. 5. A three-in-one-out reversing switch according to claim 4, characterized in that, the wiring fixture (63) includes a disc seat (631), and the disc seat (631) is fixedly socketed On the wiring adjustment rod (62), a plurality of wedge-shaped expansion parts (633) are fixed on the bottom of the disc seat (631), and the position of the wedge-shaped expansion parts (633) is consistent with that of the conductive connecting piece (614). The position corresponds up and down. 6. The three-in-one-out reversing switch according to claim 5, characterized in that, the wiring fixture (63) further includes an adjusting link (632) and an arc-shaped folding frame (634), the The arc-shaped folding frame (634) is rotatably connected to the top of the conductive connecting piece (614), and one end of the adjusting link (632) is rotatably connected to the peripheral side of the disc seat (631), and the adjusting link (632) ) is rotationally connected with the arc-shaped folding frame (634). 7. A three-in-one-out reversing switch according to claim 1, characterized in that, a connection locking piece (64) is also provided in the wiring adjustment lever (62), and the connection locking piece ( 64) is used to fix the wiring adjusting lever (62) and the connecting sleeve (613) after the wiring adjusting lever (62) is pressed down for adjustment.