A phase-changing switch

Abstract

The present invention discloses a phase-changing switch, including a shell, wherein both sides of the shell are provided with an inlet terminal and an outlet terminal, wherein the inlet terminal and the outlet terminal are respectively provided with three three-phase electrical connection holes, wherein a switch body is installed in the shell, wherein the switch body includes three first-phase modules, a second-phase module and a third-phase module with the same structure, wherein the first-phase module, the second-phase module and the third-phase module respectively include a circuit board and three first units, a second unit and a third unit with the same structure, and each unit is provided with a mechanical interlocking structure. The phase-changing switch described in the present invention has three-phase input and three-phase output, and cooperates with a neutral line to form electricity for multiple users, and adopts a mechanical interlocking structure to effectively prevent the situation where two phases are simultaneously powered, prevent short circuits, increase protection functions, and can flexibly adjust power supply according to actual needs.

Description

Technical Field

[0001] The invention relates to the field of switches, and in particular to a phase-changing switch. Background Art

[0002] The existing phase-changing switch is for single-user electricity use. It randomly switches one phase and the neutral line of the three-phase electricity according to the rules to match the single-phase electricity use. This method is only suitable for single users. In short, three-phase input and single-phase output. Moreover, when drawing electricity, it is easy to cause two phases to draw electricity at the same time, causing a short circuit and a safety accident. Summary of the invention

[0003] The purpose of the present invention is to provide a phase-changing switch with three-phase input and three-phase output, which cooperates with the neutral line to form electricity for multiple users, and adopts a mechanical interlocking structure to effectively prevent the situation where two phases are powered at the same time, prevent short circuit, increase protection function, and can flexibly adjust power supply according to actual needs.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: comprising a shell, wherein both sides of the shell are provided with an inlet terminal and an outlet terminal, wherein the inlet terminal and the outlet terminal are respectively provided with three three-phase electrical connection holes, wherein a switch body is installed in the shell, wherein the switch body comprises three first-phase modules, a second-phase module and a third-phase module with the same structure, wherein the first-phase module, the second-phase module and the third-phase module respectively comprise a circuit board and three first units, a second unit and a third unit with the same structure, wherein the first unit, the second unit and the third unit respectively comprise a base, an upper cover, an inlet contact sheet, an outlet contact sheet and a relay, wherein the relay is fixed at On the upper cover, the two power-on pins of the relay are connected to the circuit board circuit, the upper and lower levels of the relay are respectively fixed with first fixing blocks, the two first fixing blocks are movably connected with switch components, the upper and lower ends of the switch components are respectively provided with first card slots, the first card slots and the first fixing blocks are movably connected, the front of the switch component is provided with a first card block, the bottom of the incoming contact piece is fixed with a spring contact piece, the front end of the spring contact piece is connected with a second fixing block, the upper part of the second fixing block is provided with a third fixing block and a second card slot, the second card slot is connected with the first card block, the bottom of the front end of the spring contact piece and the upper part of the rear end of the outgoing contact piece are provided with There are corresponding contacts, and a mechanical interlocking structure is clamped on the base, and the mechanical interlocking structure includes a fixed box, and the fixed box is fixed with a first interlocking block through a first rotating shaft, and a second interlocking block and a third interlocking block are respectively fixed on the fixed boxes on both sides of the first rotating shaft through a second rotating shaft and a third rotating shaft, and interlocking angles are respectively provided at both ends of the first interlocking block, the second interlocking block and the third interlocking block, and the interlocking angles at both ends of the first interlocking block are located under the third fixed blocks of the first unit and the third unit, and the interlocking angles at both ends of the second interlocking block are located under the third fixed blocks of the first unit and the third unit, and the interlocking angles at both ends of the third interlocking block are located under the third fixed blocks of the first unit and the third unit. Below the third fixed blocks of the second unit and the third unit, the incoming line contact pieces of the first units of the first phase module, the second phase module and the third phase module are respectively connected to the first phase incoming line, the incoming line contact pieces of the second units are respectively connected to the second phase incoming line, the incoming line contact pieces of the third units are respectively connected to the third phase incoming line, the outgoing line contact pieces of the first unit, the second unit and the third unit of the first phase module are respectively connected to the first outgoing line, the outgoing line contact pieces of the first unit, the second unit and the third unit of the second phase module are respectively connected to the second outgoing line, and the outgoing line contact pieces of the first unit, the second unit and the third unit of the third phase module are respectively connected to the third outgoing line.

[0005] Furthermore, the switch element, the contact point, the incoming line contact piece, the outgoing line contact piece, and the spring contact piece are metal parts.

[0006] Furthermore, a semicircular protrusion is provided at the bottom of the spring contact piece.

[0007] Furthermore, partitions are respectively arranged between the first unit, the second unit and the third unit, and the partitions and the base are integrally formed by injection molding.

[0008] Furthermore, the first phase incoming lines are connected in series, the second phase incoming lines are connected in series, and the third phase incoming lines are connected in series.

[0009] Furthermore, the three first outgoing lines are connected in series, the three second outgoing lines are connected in series, and the three third outgoing lines are connected in series.

[0010] The beneficial effects of the present invention are: a phase-changing switch, three-phase input, three-phase output, combined with a neutral line to form electricity for multiple users, and a mechanical interlocking structure is adopted to effectively prevent the situation where two phases are powered at the same time, prevent short circuits, increase protection functions, and can flexibly adjust power supply according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is an external view of the present invention;

[0012] Figure 2 is a structural diagram of removing the outer shell cover of the present invention;

[0013] Figure 3 It is a schematic diagram of the structure of the present invention without the outer shell;

[0014] Figure 4 It is a schematic diagram of the structure of the present invention in which a circuit board is removed;

[0015] Figure 5 It is a schematic diagram of the connection between the base and the fixing box of the present invention;

[0016] Figure 6 The present invention Figure 5 A magnified image of area A;

[0017] Figure 7 This is a structural diagram of the third phase module of the present invention without the upper cover;

[0018] Figure 8 The present invention Figure 7 A magnified view of area B;

[0019] Fig. 9 This is a right side view of the present invention with the housing removed;

[0020] Fig.10 The present invention Fig. 9 Magnified image of area C;

[0021] Fig.11 The present invention Fig.10 A magnified view of region D;

[0022] Fig.12 This is a diagram of the mechanical interlocking structure of the third phase module of the present invention;

[0023] Fig.13 The present invention Fig.12 Magnified view of area E.

[0024] Fig.14 It is a structural diagram of the interlocking mechanism of the present invention. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1-14A phase-changing switch is shown, comprising a housing 1, wherein both sides of the housing 1 are provided with an inlet terminal 2 and an outlet terminal 3, wherein the inlet terminal 2 and the outlet terminal 3 are respectively provided with three three-phase electrical connection holes 4, wherein a switch body 5 is installed in the housing 1, wherein the switch body 5 comprises three first-phase modules 6, a second-phase module 7 and a third-phase module 8 of the same structure, wherein the first-phase module 6, the second-phase module 7 and the third-phase module 8 respectively comprise a circuit board 12 and three first units 9, a second unit 10 and a third unit 11 of the same structure, wherein the first unit 9, the second unit 10 and the third unit 11 respectively comprise a base 13, an upper cover 14, an inlet contact sheet 15, an outlet contact sheet 16 and a relay 17, wherein the relay 17 is fixed on the upper cover 14 ... The two power-on pins 18 of the relay 17 are connected to the circuit board 12. The upper and lower levels of the relay 17 are respectively fixed with first fixing blocks 19. The two first fixing blocks 19 are movably connected with switch members 20. The upper and lower ends of the switch member 20 are respectively provided with first card slots 21. The first card slots 21 are movably connected to the first fixing blocks 19. The front side of the switch member 20 is provided with a first card block 22. The bottom of the incoming line contact piece 15 is fixed with a spring contact piece 23. The front end of the spring contact piece 23 is connected with a second fixing block 24. The upper part of the second fixing block 24 is provided with a third fixing block 25 and a second card slot 26. The second card slot 26 is connected with the first card block 22. The bottom of the front end of the spring contact piece 23 is connected with the outgoing line contact piece 1 6, a corresponding contact 27 is provided at the upper part of the rear end, and a mechanical interlocking structure is clamped on the base 13, and the mechanical interlocking structure includes a fixing box 28, and the fixing box 28 is fixed with a first interlocking block 30 through a first rotating shaft 29, and a second interlocking block 33 and a third interlocking block 34 are fixed to the fixing boxes 28 on both sides of the first rotating shaft 29 through a second rotating shaft 31 and a third rotating shaft 32, respectively, and interlocking angles 35 are provided at both ends of the first interlocking block 30, the second interlocking block 33 and the third interlocking block 34, respectively, and the interlocking angles 35 at both ends of the first interlocking block 30 are located below the third fixed blocks 25 of the first unit 9 and the third unit 11, and the interlocking angles 35 at both ends of the second interlocking block 33 are located between the third fixed blocks 25 of the first unit 9 and the second unit 10. Below the fixed block 25, the interlocking angles 35 at both ends of the third interlocking block 34 are located below the third fixed block 25 of the second unit 10 and the third unit 11, the incoming line contact pieces 15 of the first unit 9 of the first phase module 6, the second phase module 7 and the third phase module 8 are respectively connected to the first phase incoming line 36, the incoming line contact pieces 15 of the second unit 10 are respectively connected to the second phase incoming line 37, the incoming line contact pieces 15 of the third unit 11 are respectively connected to the third phase incoming line 38, the outgoing line contact pieces 16 of the first unit 9, the second unit 10 and the third unit 11 of the first phase module 6 are respectively connected to the first outgoing line 39, the outgoing line contact pieces 16 of the first unit 9, the second unit 10 and the third unit 11 of the second phase module 7 are respectively connected to the second outgoing line 40,The outgoing line contact pieces 16 of the first unit 9, the second unit 10, and the third unit 11 of the third phase module 8 are respectively connected to the third outgoing line 41.

[0027] The switch element 20, the contact point 27, the incoming contact piece 15, the outgoing contact piece 16, and the spring contact piece 23 are metal parts.

[0028] A semicircular protrusion 42 is formed at the bottom of the spring contact piece 23 .

[0029] A partition plate 43 is disposed between each of the first unit 9 , the second unit 10 , and the third unit 11 , and the partition plate 43 and the base 13 are integrally formed by injection molding.

[0030] The first phase incoming lines 36 are connected in series, the second phase incoming lines 37 are connected in series, and the third phase incoming lines 38 are connected in series.

[0031] The three first outgoing lines 39 are connected in series, the three second outgoing lines 40 are connected in series, and the three third outgoing lines 41 are connected in series.

[0032] The specific working principle is: the first phase incoming line 36 is connected in series, the second phase incoming line 37 is connected in series, and the third phase incoming line 38 is connected in series. When power is needed, the relay is energized through the program control of the circuit board. After the relay is energized, the coil of the relay pulls the switch piece under the action of the magnetic field to straighten the switch piece, thereby pulling the second fixed block to move downward, so that the spring contact piece is pressed down, so that the spring contact piece and the contact on the outgoing line contact piece are in contact, and the circuit is turned on. Only the relay of one unit in a module is always energized, and the relays of the other two units are not energized. Specifically, when the relay of the first unit is energized, the second fixed block is pulled downward, and the third fixed block on the second fixed block is pressed down to interlock with the first interlocking block and the second interlocking block on the left. When the interlocking angles at the ends of the first and second interlocking blocks contact and press down, the first unit is connected, then the first interlocking block and the interlocking angles at the right ends of the second interlocking block rise, hold the third fixed blocks of the second and third units, prevent the second fixed blocks of the second and third units from being pressed down, and connect the circuit; similarly, when the relay of the second unit is energized, the second fixed block is pulled to move downward, the third fixed block on the second fixed block is pressed down and contacts the interlocking angle at the right end of the second interlocking block and the interlocking angle at the left end of the third interlocking block and presses down, then the interlocking angle at the left end of the second interlocking block and the interlocking angle at the right end of the third interlocking block rise, hold the third fixed blocks of the first and third units, and prevent the first and third units from being connected; similarly, when the relay of the third unit is energized, the second fixed block is pulled downward, and the second fixed block The third fixed block on the right side is pressed down to contact and press down the interlocking angles of the first interlocking block and the third interlocking block, and the third unit is connected. The interlocking angles at the left ends of the first interlocking block and the third interlocking block rise to support the third fixed blocks of the first unit and the second unit to prevent the first unit and the second unit from being connected. Only one unit in a module is always connected, and the two units of the other two phases are not connected to prevent short circuits. In this way, the energization of the relays in each module can be flexibly controlled to achieve flexible control of the energized units in the corresponding modules, making it more convenient and free to draw power. For example, when only the first phase electricity in the first phase module needs to be drawn, it is only necessary to control the first unit of the first phase module to be connected through the program of the circuit board. If the power load is high When it is necessary to take the first phase of electricity in the second phase module, the first unit in the second phase module can be controlled to be connected through the program of the circuit board. Of course, the connection of the first unit in the third phase can also be controlled. At the same time, when the second phase of electricity is needed, it is only necessary to control the second unit to be powered on, and when the third phase of electricity is needed, it is only necessary to control the third unit to be powered on. The phase electricity in the three modules can be flexibly adjusted according to actual power demand, and only one phase of the three modules is always connected to prevent short circuit when two phases are connected. The incoming line end can be connected with a molded case circuit breaker for circuit breaker protection, and each phase of the outgoing line end is equipped with a neutral wire, which can adapt to the use of multiple users, and can be divided according to actual conditions. As long as the power load is sufficient, it can be divided for more users.

[0033] A phase-changing switch in this embodiment has three phases in and three phases out, and cooperates with a neutral line to form electricity for multiple users. It also adopts a mechanical interlocking structure to effectively prevent the situation where two phases are powered at the same time, prevent short circuits, increase protection functions, and can flexibly adjust power supply according to actual needs.

Claims

1. A phase-changing switch, characterized in that: The invention comprises a housing (1), wherein both sides of the housing (1) are provided with an inlet terminal (2) and an outlet terminal (3), wherein the inlet terminal (2) and the outlet terminal (3) are respectively provided with three three-phase electrical connection holes (4), wherein a switch body (5) is installed in the housing (1), wherein the switch body (5) comprises three first-phase modules (6), a second-phase module (7) and a third-phase module (8) having the same structure, wherein the first-phase module (6), the second-phase module (7) and the third-phase module (8) respectively comprise a circuit board (12) and three first units (9), a second unit (10) and a third unit (11) having the same structure, wherein the first unit (9), the second unit (10) and the third unit (11) respectively comprise a base ( 13), an upper cover (14), an incoming line contact sheet (15), an outgoing line contact sheet (16) and a relay (17), wherein the relay (17) is fixed on the upper cover (14), two energized pins (18) of the relay (17) are connected to the circuit board (12), the upper and lower levels of the relay (17) are respectively fixed with first fixing blocks (19), the two first fixing blocks (19) are movably connected with a switch member (20), the upper and lower ends of the switch member (20) are respectively provided with first card slots (21), the first card slots (21) and the first fixing blocks (19) are movably connected, the front side of the switch member (20) is provided with a first card block (22), the bottom of the incoming line contact sheet (15) is fixed A spring contact piece (23), wherein a second fixing block (24) is clamped at the front end of the spring contact piece (23), a third fixing block (25) and a second clamping groove (26) are provided on the upper part of the second fixing block (24), a first clamping block (22) is clamped in the second clamping groove (26), a corresponding contact point (27) is provided at the bottom of the front end of the spring contact piece (23) and the upper part of the rear end of the outlet contact piece (16), a mechanical interlocking structure is clamped on the base (13), the mechanical interlocking structure comprises a fixing box (28), the fixing box (28) is fixed with a first interlocking block (30) via a first rotating shaft (29), and the fixing boxes (28) on both sides of the first rotating shaft (29) are respectively connected via the second rotating shaft (3 1), the third rotating shaft (32) is respectively fixed with a second interlocking block (33) and a third interlocking block (34), the first interlocking block (30), the second interlocking block (33) and the third interlocking block (34) are respectively provided with interlocking angles (35) at both ends, the interlocking angles (35) at both ends of the first interlocking block (30) are located below the third fixed blocks (25) of the first unit (9) and the third unit (11), the interlocking angles (35) at both ends of the second interlocking block (33) are located below the third fixed blocks (25) of the first unit (9) and the second unit (10), and the interlocking angles (35) at both ends of the third interlocking block (34) are located below the third fixed blocks (25) of the second unit (10) and the third unit (11),The incoming line contact pieces (15) of the first units (9) of the first phase module (6), the second phase module (7) and the third phase module (8) are respectively connected to the first phase incoming line (36), the incoming line contact pieces (15) of the second units (10) are respectively connected to the second phase incoming line (37), the incoming line contact pieces (15) of the third units (11) are respectively connected to the third phase incoming line (38), the outgoing line contact pieces (16) of the first unit (9), the second unit (10) and the third unit (11) of the first phase module (6) are respectively connected to the first outgoing line (39), the outgoing line contact pieces (16) of the first unit (9), the second unit (10) and the third unit (11) of the second phase module (7) are respectively connected to the second outgoing line (40), and the outgoing line contact pieces (16) of the first unit (9), the second unit (10) and the third unit (11) of the third phase module (8) are respectively connected to the third outgoing line (41).

2. A phase-changing switch according to claim 1, characterized in that: The switch element (20), the contact point (27), the incoming line contact piece (15), the outgoing line contact piece (16), and the spring contact piece (23) are metal parts.

3. A phase-changing switch according to claim 1, characterized in that: A semicircular protrusion (42) is provided at the bottom of the spring contact piece (23).

4. A phase-changing switch according to claim 1, characterized in that: A partition plate (43) is provided between each of the first unit (9), the second unit (10) and the third unit (11), and the partition plate (43) and the base (13) are integrally formed by injection molding.

5. The phase-changing switch according to claim 1, characterized in that: The first phase incoming lines (36) are connected in series, the second phase incoming lines (37) are connected in series, and the third phase incoming lines (38) are connected in series.

6. A phase-changing switch according to claim 1, characterized in that: The three first outgoing lines (39) are connected in series, the three second outgoing lines (40) are connected in series, and the three third outgoing lines (41) are connected in series.

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