A new type of power equipment standby circuit fast switching device

Abstract

The utility model discloses a novel standby circuit quick switching device of electric power equipment belongs to circuit switching technical field, it includes the casing, is installed the terminal block on the casing, the casing inside is installed with main power switch and standby power switch. This novel standby circuit quick switching device of electric power equipment, through the support drive high resistance block, middle resistance block and low resistance block move in the box body, and middle resistance block will carry out conduction through the conducting strip and will connect the live end and the fire line, make instantaneous current smaller, if high resistance block connects the live end and the fire line through the conducting strip, instantaneous current reduces to minimum at this moment, when low resistance block slides into between two conducting strips, because the resistance changes, make the current enhancement and reach the maximum value, realize the purpose of the instantaneous current that generates buffering through the mode of resistance in turn reduces, prevent the instantaneous current that generates and cause damage to the circuit and electric power equipment.

Description

Technical Field

[0001] This utility model belongs to the field of circuit switching technology, specifically a new type of rapid switching device for backup circuits of power equipment. Background Technology

[0002] As a core safeguard against main circuit failures, backup circuits are widely used in current power equipment. Backup circuit switching devices are mainly divided into two categories: traditional mechanical switch switching and early electronic switching.

[0003] Because electronic devices conduct electricity quickly, during the switching of backup power, the voltage phase and amplitude of the main and backup circuits differ, and a surge current several times the rated current can easily be generated at the moment of switching. This can easily damage the circuit and power equipment, posing a safety hazard. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a novel backup circuit fast switching device for power equipment, which solves the problem that during the switching of backup power, due to the difference in voltage phase and amplitude between the main and backup circuits, an inrush current several times the rated current is easily generated at the moment of switching, which can easily damage the circuit and power equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel backup circuit fast switching device for power equipment, comprising a housing, a terminal block mounted on the housing, a main power switch and a backup power switch installed inside the housing, a protection component provided on one side of the main power switch and the backup power switch, the top end of the protection component penetrating the housing and connected to the terminal block, the bottom end of the protection component penetrating the housing and fixed to its bottom, a housing body fixed on the inner wall of the housing corresponding to the positions of the main power switch and the backup power switch, a power-on terminal and a live wire respectively penetrating and fixed on both sides of the housing body, the other ends of the two power-on terminals being connected to the main power switch and the backup power switch, conductive plates respectively fixed at the opposite ends of the power-on terminals and the live wire, a protective component overlapping between the two conductive plates, the protective component comprising an insulating rod, a bracket fixed at the end of the insulating rod, a high-resistance block, a medium-resistance block and a low-resistance block installed in the bracket, an isolation block fixed between the high-resistance block, the medium-resistance block and the low-resistance block, and the medium-resistance block overlapping with the two conductive plates.

[0006] As a further embodiment of this utility model: the end of the insulating rod away from the bracket passes through the box and fixes the bearing, a pull rod is sleeved inside the bearing, and a sleeve is provided outside the pull rod, with the end passing through the sleeve and a handle fixed thereon.

[0007] As a further embodiment of this utility model: the insulating rod is rectangular in design and is fitted with a spring on the outside, with the two ends of the spring being fixedly connected to the inner wall of the box and the opposite surface of the bracket, respectively.

[0008] As a further embodiment of this utility model: a locking rod is fixed to the outer wall of the pull rod, a sliding hole is provided on the sleeve, and three locking grooves are provided inside the sliding hole, with the locking rod engaging in the middle locking groove.

[0009] As a further embodiment of this utility model: the protection component includes a neutral wire, the top end of which passes through the housing and is connected to the terminal block, and circuit breakers are connected to both sides of the middle part of the neutral wire, with the two circuit breakers respectively connected to one side of the main power switch and the backup power switch.

[0010] As a further embodiment of this utility model: the bottom end of the neutral wire passes through the bottom of the housing and is equipped with a leakage current protector, and several heat dissipation holes are provided on the front of the housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This novel power equipment's backup circuit quick switching device, by gripping the handle and rotating it counterclockwise, allows the pull rod to disengage the external locking rod from the slot. Pulling the handle then moves the insulating rod forward, causing the locking rod to slide in the sliding hole. This allows the end of the insulating rod to move the high-resistance block, medium-resistance block, and low-resistance block inside the housing via a bracket. Currently, the medium-resistance block is in contact with two conductive plates, conducting electricity through them and connecting the energized terminal to the live wire, resulting in a small instantaneous current. If the high-resistance block connects the energized terminal to the live wire through the conductive plates, the instantaneous current is reduced to a minimum. As the medium-resistance block disengages from the two conductive plates, the low-resistance block outside the bracket slides between the two conductive plates, connecting the energized terminal to the live wire. Due to the change in resistance, the current increases and reaches its maximum value. By sequentially reducing resistance, the device buffers the instantaneous current, preventing damage to the circuit and power equipment.

[0012] 2. The backup circuit quick switching device of this new type of power equipment, by rotating the handle, causes the pull rod to rotate clockwise, and the clamping rod is engaged in the groove at the front of the sleeve. With the help of the spring force, the bracket is pushed. The bracket transmits the force generated to the clamping rod through the bearing and the pull rod, so that the clamping rod is tightly attached to the inner wall of the groove and is not easy to deflect freely. This ensures the stability of the high resistance block, medium resistance block and low resistance block in the current position, and allows the high resistance block, medium resistance block and low resistance block to fit tightly with the two opposite conductive plates. Moreover, there are isolation blocks fixed between the high resistance block, medium resistance block and low resistance block to prevent interference between them, and improve the stability of the connection between the power terminal and the live wire. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural schematic diagram of the cross-section of the shell of this utility model; Figure 3 This is a schematic diagram of a partial cross-section of the box body of this utility model; Figure 4 This is a schematic diagram of the structure of the protective component of this utility model; In the diagram: 1. Housing; 2. Terminal block; 3. Main power switch; 4. Backup power switch; 5. Protection components; 501. Neutral wire; 502. Circuit breaker; 503. Residual current device (RCD); 6. Box body; 7. Power-on terminal; 8. Live wire; 9. Conductive sheet; 10. Protection components; 101. Insulating rod; 102. Bracket; 103. Isolation block; 104. High resistance block; 105. Medium resistance block; 106. Low resistance block; 107. Spring; 108. Bearing; 109. Pull rod; 1010. Handle; 1011. Locking rod; 11. Sleeve; 12. Sliding hole; 13. Slot; 14. Heat dissipation hole. Detailed Implementation

[0014] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0015] like Figure 1-4 As shown, this utility model provides a technical solution: a novel backup circuit fast switching device for power equipment, comprising a housing 1, a terminal block 2 mounted on the housing 1, a main power switch 3 and a backup power switch 4 installed inside the housing 1, a protection component 5 provided on one side of the main power switch 3 and the backup power switch 4, the top end of the protection component 5 penetrating the housing 1 and connected to the terminal block 2, the bottom end of the protection component 5 penetrating the housing 1 and fixed to its bottom, the protection component 5 including a neutral wire 501, the top end of the neutral wire 501 penetrating the housing 1 and connected to the terminal block 2, and circuit breakers 502 connected to both sides of the middle of the neutral wire 501, the two circuit breakers 502 being respectively connected to one side of the main power switch 3 and the backup power switch 4. Connection; the bottom end of the neutral wire 501 passes through the bottom of the housing 1 and is equipped with a residual current device 503. Several heat dissipation holes 14 are opened on the front of the housing 1. When switching the standby circuit, the circuit breaker 502 on the side of the main power switch 3 is disconnected, and the circuit breaker 502 on the side of the standby power switch 4 is opened, so that the neutral wire 501 is connected to the standby power switch 4 through the circuit breaker 502 below. If the main power switch 3 is switched, the circuit breaker 502 on the side of the main power switch 3 is opened, and the circuit breaker 502 below is connected, so that the standby power switch 4 does not work, and the main power switch 3 starts normally. This reduces wiring and facilitates circuit switching. The residual current device 503 can prevent leakage and safety hazards.

[0016] A housing 6 is fixed to the inner wall of the housing 1 at the positions corresponding to the main power switch 3 and the backup power switch 4. A power-on terminal 7 and a live wire 8 are fixed through the two sides of the housing 6 respectively. The other ends of the two power-on terminals 7 are connected to the main power switch 3 and the backup power switch 4. A conductive sheet 9 is fixed to the opposite end of the power-on terminal 7 and the live wire 8 respectively. A protective component 10 is connected between the two conductive sheets 9. The protective component 10 includes an insulating rod 101. A bracket 102 is fixed to the end of the insulating rod 101. The end of the insulating rod 101 away from the bracket 102 passes through the housing 6 and fixes a bearing 108. A pull rod 109 is sleeved inside the bearing 108. A sleeve 11 is provided on the outside of the pull rod 109 and the end passes through the sleeve 11 and is fixed with a handle 1010. Since the end of the pull rod 109 is connected to the insulating rod 101 through the bearing 108, the pull rod 109 will not drive the insulating rod 101 to rotate synchronously during the rotation process, thereby improving the stability of the pull rod 109 driving the insulating rod 101 to move through the bearing 108. A locking rod 1011 is fixed to the outer wall of the pull rod 109. A sliding hole 12 is provided on the sleeve 11. Three locking slots 13 are provided inside the sliding hole 12. The locking rod 1011 is engaged in the middle locking slot 13. Pulling the handle 1010 causes it to move forward through the pull rod 109, bearing 108 and insulating rod 101. The pull rod 109 then drives the locking rod 1011 to slide in the sliding hole 12. Moreover, the locking rod 1011 can be engaged in one of the locking slots 13 to limit the pull rod 109 and insulating rod 101, which facilitates the adjustment of the positions of the high resistance block 104, medium resistance block 105 and low resistance block 106 in the bracket 102.

[0017] A high-resistance block 104, a medium-resistance block 105, and a low-resistance block 106 are installed in the bracket 102. An isolation block 103 is fixed between the high-resistance block 104, the medium-resistance block 105, and the low-resistance block 106. The medium-resistance block 105 overlaps with two conductive sheets 9. The insulating rod 101 is rectangular and is fitted with a spring 107 to prevent the pull rod 109 from rotating the insulating rod 101. The two ends of the spring 107 are fixedly connected to the inner wall of the box 6 and the opposite surface of the bracket 102, respectively. When the handle is rotated, the pull rod 109 drives the locking rod 1011 to rotate clockwise. The locking rod 1011 then engages in the locking groove 13 at the front of the sleeve 11. The elastic force of the spring 107 pushes the bracket 102. The bracket 102 transmits the force generated to the locking rod 1011 through the bearing 108 and the pull rod 109, so that the locking rod 1011 is tightly attached to the inner wall of the locking groove 13 and is not easy to deflect freely.

[0018] The working principle of this utility model is as follows: When switching to the backup circuit, the circuit breaker 502 on the main power switch 3 side is disconnected, and the circuit breaker 502 on the backup power switch 4 side is opened, allowing the neutral wire 501 to be connected to the backup power switch 4 through the lower circuit breaker 502. To prevent excessive instantaneous current during circuit switching, by holding the handle 1010 and rotating it counterclockwise, the pull rod 109 can drive the external locking rod 1011 to disengage from the locking slot 13. Since the end of the pull rod 109 is connected to the insulating rod 101 through the bearing 108, To prevent the pull rod 109 from rotating synchronously with the insulating rod 101, the handle 1010 is pulled to move it forward via the pull rod 109, bearing 108, and insulating rod 101. The pull rod 109 then drives the locking rod 1011 to slide in the sliding hole 12, causing the end of the insulating rod 101 to move the high-resistance block 104, medium-resistance block 105, and low-resistance block 106 inside the housing 6 via the bracket 102. Currently, the medium-resistance block 105 is in contact with the two conductive plates 9, and the medium resistance... The resistive block 105 conducts electricity through the conductive sheet 9 and connects the energized terminal 7 and the live wire 8, resulting in a small instantaneous current. If the high-resistance block 104 connects the energized terminal 7 and the live wire 8 through the conductive sheet 9, the instantaneous current is reduced to a minimum. As the medium-resistance block 105 detaches from the two conductive sheets 9, the low-resistance block 106 outside the bracket 102 can slide between the two conductive sheets 9, connecting the energized terminal 7 and the live wire 8. Due to the change in resistance, the current increases and reaches its maximum value. Then... The rotating handle causes the pull rod 109 to rotate clockwise, which in turn causes the locking rod 1011 to engage in the locking groove 13 at the front of the sleeve 11. This, combined with the elastic force of the spring 107, pushes the bracket 102. The bracket 102 then transmits the force generated to the locking rod 1011 through the bearing 108 and the pull rod 109, ensuring that the locking rod 1011 is tightly attached to the inner wall of the locking groove 13 and does not easily deflect freely. This guarantees the stability of the high-resistance block 104, medium-resistance block 105, and low-resistance block 106 in their current positions.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A novel backup circuit fast switching device for power equipment, comprising a housing (1), characterized in that: A terminal block (2) is installed on the housing (1). A main power switch (3) and a backup power switch (4) are installed inside the housing (1). A protection component (5) is provided on one side of the main power switch (3) and the backup power switch (4). The top of the protection component (5) penetrates the housing (1) and is connected to the terminal block (2). The bottom of the protection component (5) penetrates the housing (1) and is fixed to its bottom. A housing (6) is fixed on the inner wall of the housing (1) at the position corresponding to the main power switch (3) and the backup power switch (4). A power-on terminal (7) and a live wire (8) are respectively fixed through the two sides of the housing (6). The other ends of the two power-on terminals (7) are connected to the main power switch. The power switch (3) and the backup power switch (4) are connected. The power-on terminal (7) and the live wire (8) are respectively fixed with conductive plates (9). A protective component (10) is connected between the two conductive plates (9). The protective component (10) includes an insulating rod (101). A bracket (102) is fixed at the end of the insulating rod (101). A high-resistance block (104), a medium-resistance block (105) and a low-resistance block (106) are installed in the bracket (102). An isolation block (103) is fixed between the high-resistance block (104), the medium-resistance block (105) and the low-resistance block (106). The medium-resistance block (105) is connected to the two conductive plates (9).

2. The novel backup circuit fast switching device for power equipment according to claim 1, characterized in that: The end of the insulating rod (101) away from the bracket (102) passes through the box (6) and fixes the bearing (108). A pull rod (109) is sleeved inside the bearing (108). A sleeve (11) is provided on the outside of the pull rod (109) and the end passes through the sleeve (11) and is fixed with a handle (1010).

3. The novel backup circuit fast switching device for power equipment according to claim 1, characterized in that: The insulating rod (101) is rectangular and is fitted with a spring (107) on the outside. The two ends of the spring (107) are fixedly connected to the inner wall of the box (6) and the opposite side of the bracket (102), respectively.

4. A novel backup circuit fast switching device for power equipment according to claim 2, characterized in that: The outer wall of the pull rod (109) is fixed with a locking rod (1011), and the sleeve (11) is provided with a sliding hole (12). The sliding hole (12) is provided with three slots (13), and the locking rod (1011) is engaged in the slot (13) in the middle.

5. A novel backup circuit fast switching device for power equipment according to claim 1, characterized in that: The protection component (5) includes a neutral wire (501), the top end of which passes through the housing (1) and is connected to the terminal block (2). Circuit breakers (502) are connected to both sides of the middle part of the neutral wire (501), and the two circuit breakers (502) are respectively connected to one side of the main power switch (3) and the backup power switch (4).

6. A novel backup circuit fast switching device for power equipment according to claim 5, characterized in that: The bottom end of the neutral wire (501) passes through the bottom of the housing (1) and is equipped with a leakage current protector (503). Several heat dissipation holes (14) are opened on the front of the housing (1).

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