Wireless stripping photovoltaic direct current circuit breaker device

Abstract

This invention provides a stripping-free photovoltaic DC circuit breaker device, relating to the field of circuit breaker technology. It includes a circuit breaker body with multiple stripping-free wiring compartments at its bottom. Each stripping-free wiring compartment, from the insertion hole side, has a clamping block, a stop-limiting seat, and a telescopic connector arranged sequentially from the outside in. The clamping blocks are a pair. The stop-limiting seat is used to stop the connector inserted into one end of the stripping-free wiring compartment. The telescopic connector consists of several connecting claws. When the end of the connector softens, a telescopic push plate slides laterally towards the connector, causing the connecting claws to slide sideways and ultimately complete the connection. This invention abandons the traditional piercing structure, completing the electrical connection of the conductor from the end of the connector. This connection method does not damage the insulation layer of the conductor, and the connection operation is simpler, providing a new approach for stripping-free connector connections.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically to a stripping-free photovoltaic DC circuit breaker device. Background Technology

[0002] A solderless and wire-stripping-free connector, disclosed in the prior art (CN108232477B), is used to achieve solderless and wire-stripping-free connection with wires. The connector includes a housing, contact pieces, a pressure plate, a power rod, a retaining ring, and a positioning ring. When the wire is connected to the connector, the contact pieces are inserted into the housing, and the wire is inserted into the housing and contacts the contact pieces. The positioning ring is located inside the pressure plate, which is inserted into the housing and presses down on the wire. The retaining ring is fitted onto the power rod, and the power rod is inserted into and connected to the positioning ring inside the pressure plate. Compared with the prior art, this device has a simple structure, improves the contact stability between the connector and the connecting wire, eliminates the need for soldering and wire stripping, and allows for easy connection under energized conditions. This simplifies the manufacturing process, reduces costs, increases the bonding strength between the connector and the connecting wire, and results in a compact structure and stable conductivity.

[0003] However, the device still has some obvious defects in use: although the device does not require wire stripping, it requires piercing the outer insulation layer of the wire through the piercing structure during installation. This installation method has certain requirements for operation. If the insulation layer cannot be pierced, electrical connection will not be possible. If the piercing force is too great, it may damage the piercing structure or the wire, thereby affecting the subsequent normal electrical connection. Summary of the Invention

[0004] The purpose of this invention is to provide a stripping-free photovoltaic DC circuit breaker device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A stripping-free photovoltaic DC circuit breaker device includes a circuit breaker body. The bottom of the circuit breaker body has multiple stripping-free wiring compartments. Each stripping-free wiring compartment has an internal and external through-hole on one side. From the outside to the inside, each stripping-free wiring compartment has a clamping block, an abutment limiting seat, and a telescopic plug head arranged sequentially from the outside to the inside.

[0007] The clamping blocks are a pair, and the pair of clamping blocks are arranged separately on both sides of the extension line of the plug hole. When the connector is installed, the clamping blocks on both sides move towards each other to clamp and fix the connector. The clamping blocks on both sides are provided with an embedded groove on the side that abuts against the limiting seat. The embedded groove is used to allow the telescopic connector to be inserted laterally. The clamping blocks are also provided with a heating pad on the side that abuts against the limiting seat. When the clamping blocks on both sides come into contact, the circuit where the heating pad is located is turned on. The heating pad heats the end of the connector that enters the wire-stripping compartment, thereby softening the outer insulation layer at the end of the connector, making it easier for the telescopic connector to be inserted laterally.

[0008] The abutment limiting seat is used to abut and limit the insertion of the connector into one end of the wire-free connector compartment. Before the connector is inserted, the copper core at the end of the connector is cut off with connector pliers so that the end of the outer insulation layer protrudes from the end of the copper core. After the connector is inserted, the abutment limiting seat enters the outer insulation layer and abuts against the end of the copper core.

[0009] The telescopic connector consists of several connecting claws arranged in a circular array. A through slot is provided on the side of the abutment limiting seat for the connecting claws to be inserted. In the initial state, the connecting claws are flush with the outer arc-shaped edge of the abutment limiting seat, so that they enter the outer insulation layer together after the connector is inserted. The connecting claws are slidably disposed on the telescopic push plate away from the connector. When the end of the connector softens, the telescopic push plate slides and moves towards the connector, thereby pushing the connecting claws to slide laterally and finally complete the wiring. The abutment limiting seat and the connecting claws are electrically connected to the circuit breaking structure inside the circuit breaker.

[0010] Preferably, a drive plate is fixedly installed at the bottom of each of the clamping blocks on both sides. The drive plate has a threaded hole that is threadedly engaged with the threaded screw. During the rotation of the threaded screw, the clamping blocks on both sides move towards or away from each other. A driven helical gear is also fixedly installed on the threaded screw. The driven helical gear meshes with the driving helical gear. The driving helical gear is coaxially fixedly connected to the drive connecting rod. The threaded screw is rotated by manually rotating the drive connecting rod.

[0011] Preferably, several of the terminal blocks are slidably installed in a groove opened in the telescopic push plate. The groove is also equipped with a compression spring that pushes the terminal blocks closer to each other without external force. When the telescopic push plate slides towards the terminal head, the terminal blocks move radially away from each other along the axis of the terminal head, thereby overcoming the elastic force of the compression spring and doing work. The telescopic push plate is driven by the pushing mechanism to slide towards the terminal head.

[0012] Preferably, the telescopic push plate has a slide bar hole, and a translation slide bar is installed in the slide bar hole. The stability of the telescopic push plate is ensured by the cooperation of the slide bar hole and the translation slide bar.

[0013] Preferably, a piston rod is fixedly installed at the end of the telescopic push plate away from the terminal claw. The piston end of the piston rod is located in the sealant storage chamber. A push spring is sleeved on the piston rod to push the telescopic push plate towards the terminal without external force. A locking groove is also provided on the piston rod. The locking groove is connected to the unlocking mechanism. The piston rod is released from its limiting position by the operation of the unlocking mechanism.

[0014] Preferably, the unlocking mechanism includes a locking push rod, which is movably engaged with a locking groove. The locking push rod is also movably engaged with a pry bar. The pry bar, on the side away from the locking push rod, is movably engaged with a toggle block. The toggle block is fixedly mounted on a threaded screw. During the rotation of the threaded screw, the pry bar is pushed to generate displacement, thereby pushing the locking push rod to disengage from the locking groove through the pry bar. At this time, the piston push rod, under the action of the push spring, pushes the telescopic push plate to slide towards the side closer to the connector.

[0015] Preferably, the sealant storage chamber is also connected to a sealing hole at the end of the connector via a pipeline. During the translation and sliding of the piston rod, the sealant in the sealant storage chamber is pushed through the pipeline to finally cure and seal the end of the connector.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention abandons the traditional piercing structure and completes the electrical connection of the wire from the end of the connector. This connection method does not require damage to the insulation layer of the wire and the connection operation is simpler, providing a new approach to wire stripping-free connection of connectors. Attached Figure Description

[0018] Figure 1 This is a partial enlarged cross-sectional view of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the connector claw of the present invention in its initial state;

[0020] Figure 3 This is a schematic diagram of the connector claw of the present invention in the wiring state;

[0021] Figure 4 This is a schematic diagram of the wiring process before and after the connector claw of the present invention.

[0022] In the diagram: 1 Circuit breaker body, 2 No-stripping wiring compartment, 3 Socket hole, 4 Clamping block, 5 Abutment limit seat, 6 Telescopic plug, 7 Terminal, 8 Embedded groove, 9 Heating patch, 10 Outer insulation layer, 11 Copper core, 12 Terminal claw, 13 Telescopic push plate, 14 Drive plate, 15 Threaded screw, 16 Driven helical gear, 17 Driven helical gear, 18 Drive linkage, 19 Compression spring, 20 Slide rod hole, 21 Translation slide rod, 22 Piston push rod, 23 Sealant storage chamber, 24 Push spring, 25 Locking groove, 26 Locking push rod, 27 Pry bar, 28 Actuating block, 29 Pipeline, 30 Sealing hole. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-4 The present invention provides a technical solution:

[0025] Example 1:

[0026] A stripping-free photovoltaic DC circuit breaker device includes a circuit breaker body 1. The bottom of the circuit breaker body 1 has multiple stripping-free wiring compartments 2. Each stripping-free wiring compartment 2 has an internal and external through insertion hole 3 on one side. From the insertion hole 3, the stripping-free wiring compartment 2 is provided with a clamping block 4, an abutment limit seat 5 and a telescopic insertion head 6 in sequence from the outside to the inside.

[0027] The clamping blocks 4 are a pair, and the pair of clamping blocks 4 are set on both sides of the extension line of the axis of the plug hole 3. When the connector 7 is installed, the clamping blocks 4 on both sides move towards each other to clamp and fix the connector 7. The clamping blocks 4 on both sides are provided with an embedded groove 8 on the side that abuts against the limit seat 5. The embedded groove 8 is used to allow the telescopic plug 6 to be inserted laterally. The clamping blocks 4 are also provided with a heating patch 9 on the side that abuts against the limit seat 5. When the clamping blocks 4 on both sides abut against each other, the circuit of the heating patch 9 is turned on. The heating patch 9 heats the end of the connector 7 that enters the wire-free connector compartment 2, thereby softening the outer insulation layer 10 at the end of the connector 7, making it easier for the telescopic plug 6 to be inserted laterally.

[0028] The abutment limit seat 5 is used to abut and limit the insertion of the connector 7 into one end of the non-stripping connector compartment 2. Before the connector 7 is inserted, the copper core at the end of the connector 7 is cut off with connector pliers so that the end of the outer insulation layer 10 protrudes from the end of the copper core 11. After the connector 7 is inserted, the abutment limit seat 5 enters the outer insulation layer 10 and abuts and contacts the end of the copper core 11.

[0029] The telescopic connector 6 consists of several connecting claws 12 arranged in a circular array. A through slot is provided on the side of the limiting seat 5 for the connecting claws 12 to be inserted. In the initial state, the connecting claws 12 are flush with the outer arc-shaped edge of the limiting seat 5, so that they enter the outer insulation layer 10 together after the connector 7 is inserted. The connecting claws 12 are slidably disposed on the telescopic push plate 13 on the side away from the connector 7. When the end of the connector 7 softens, the telescopic push plate 13 pushes the connecting claws 12 to slide laterally towards the connector 7, thus completing the wiring. The limiting seat 5 and the connecting claws 12 are electrically connected to the circuit breaking structure inside the circuit breaker.

[0030] In this embodiment, the circuit breaker body 1 serves as a carrier for various components and contains multiple stripper bays 2. Multiple terminals 6 are inserted into the stripper bays 2 through insertion holes 3. A pair of clamping blocks 4 are installed within each stripper bay 2. By driving the pair of clamping blocks 4 to move towards each other, the terminals 6 are limited and fixed. Simultaneously, a heating pad 9 is provided on the side of the clamping block 4 near the limiting seat 5. When the clamping blocks 4 on both sides approach each other until they contact, the circuit containing the heating pad 9 is connected through the connection of the contact pads on both sides. The battery in this circuit originates from a disposable button located in the circuit breaker body 1. The function of the battery is to heat the heating pad 9 by supplying power, thereby softening the outer insulation layer 10 at the end of the connector 6. The retaining seat 5 is used to insert the connector 7 into one end of the wire-free connector compartment 2 for a retaining and limiting. Before the connector 7 is inserted, the copper core at the end of the connector 7 is cut off by the connector pliers. After the connector 7 is inserted, the retaining seat 5 enters the outer insulation layer 10 and abuts against the end of the copper core 11. The telescopic connector 6 is composed of several connector claws 12. The connector claws 12 slide to one side of the connector 7 to engage with the copper core 11, thereby completing the wire-free connection.

[0031] Example 2:

[0032] A drive plate 14 is fixedly installed on the bottom of each clamping block 4 on both sides. The drive plate 14 has a threaded hole that is threadedly engaged with the threaded screw 15. During the rotation of the threaded screw 15, the clamping blocks 4 on both sides move towards each other or away from each other. A driven helical gear 16 is also fixedly installed on the threaded screw 15. The driven helical gear 16 meshes with the driving helical gear 17. The driving helical gear 17 is coaxially fixedly connected to the drive connecting rod 18. The threaded screw 15 is rotated by manually rotating the drive connecting rod 18.

[0033] In this embodiment, the telescopic drive mechanism of the clamping blocks 4 on both sides is further disclosed. One of the wire-free wiring compartments 2 is provided with a pair of clamping blocks 4. Therefore, multiple pairs of clamping blocks 4 need to be provided in multiple wire-free wiring compartments 2. Multiple driving helical gears 17 and driven helical gears 16 are required. The drive linkage 18 is connected to one of the driving helical gears 17, and multiple driven helical gears 16 are installed on the same threaded screw 15. The significance of this arrangement is that only one drive linkage 18 needs to be rotated to perform synchronous wiring operations on multiple wire-free wiring compartments 2.

[0034] Example 3:

[0035] Several terminal blocks 12 are slidably installed in the grooves opened in the telescopic push plate 13. The grooves are also equipped with compression springs 19 that push the terminal blocks 12 closer to each other without external force. When the telescopic push plate 13 slides towards the terminal block 7, the terminal blocks 12 move radially away from each other along the axis of the terminal block 7, thereby overcoming the elastic force of the compression springs 19. The telescopic push plate 13 slides towards the terminal block 7 under the drive of the pushing mechanism.

[0036] The telescopic push plate 13 has a slide bar hole 20, and a translation slide bar 21 is installed in the slide bar hole 20. The stability of the sliding of the telescopic push plate 13 is ensured by the cooperation of the slide bar hole 20 and the translation slide bar 21.

[0037] In this embodiment, the connection method of the connector claws 12 and the connection structure of the telescopic push plate 13 are further disclosed. Several connector claws 12 slide and translate within the groove. When the telescopic push plate 13 moves towards the connector head 7, the multiple connector claws 12 simultaneously perform a disengaging movement to engage with the copper core 11. (Refer to the appendix of the specification.) Figure 4 Until the wiring operation is completed, the telescopic push plate 13 slides and moves along the path of the translation slide bar 21.

[0038] Example 4:

[0039] A piston rod 22 is fixedly installed at the end of the telescopic push plate 13 away from the terminal claw 12. The piston end of the piston rod 22 is located in the sealant storage chamber 23. A push spring 24 is sleeved on the piston rod 22 to push the telescopic push plate 13 toward the terminal 7 without external force. A locking groove 25 is also provided on the piston rod 22. The locking groove 25 is connected to the unlocking mechanism. The piston rod 22 is released from its limiting position by the operation of the unlocking mechanism.

[0040] The unlocking mechanism includes a locking push rod 26, which is movably engaged with the locking groove 25. The locking push rod 26 is also movably engaged with the pry bar 27. The side of the pry bar 27 away from the locking push rod 26 is movably engaged with the actuating block 28. The actuating block 28 is fixedly installed on the threaded screw 15. During the rotation of the threaded screw 15, the pry bar 27 is pushed to generate displacement, thereby pushing the locking push rod 26 to disengage from the locking groove 25 through the pry bar 27. At this time, the piston push rod 22 pushes the telescopic push plate 13 to slide towards the side closer to the connector 7 under the action of the push spring 24.

[0041] In this embodiment, a mechanism for pushing the telescopic push plate 13 to slide is further disclosed. The telescopic push plate 13 is connected to the piston push rod 22. The piston push rod 22 is initially limited by the locking push rod 26. The locking push rod 26 is disengaged from the locking groove 25 under the prying action of the prying rod 27. At this time, the piston push rod 22 slides towards the terminal 7 under the action of the pushing spring 24. The prying rod 27 moves under the push of the actuating block 28. The actuating block 28 is installed on the threaded screw 15. During the rotation of the threaded screw 15, the prying rod 27 is pushed to generate displacement. Thus, all wiring operations can be completed by simply rotating the drive link 18.

[0042] Example 5:

[0043] The sealant storage chamber 23 is also connected to the sealing hole 30 at the end of the connector 7 via the pipe 29. During the translation and sliding of the piston rod 22, the sealant in the sealant storage chamber 23 is pushed through the pipe 29 to finally cure and seal the end of the connector 7.

[0044] In this embodiment, the sealant storage chamber 23 contains a sealing curing adhesive. When the piston rod 22 moves, it synchronously pushes the sealing curing adhesive in the sealant storage chamber 23 through the pipe 29 and through the sealing hole 30. Since the sealing hole 30 is located at the end of the connector 7, the sealing curing can further seal the connector, thereby further preventing corrosion at the connector and ensuring the connection strength at the connector.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire-free photovoltaic DC circuit breaker device comprising a circuit breaker body, characterized by: The circuit breaker body has multiple stripping-free wiring compartments at its bottom. Each stripping-free wiring compartment has an internal and external through-hole on one side. From the outside to the inside, each stripping-free wiring compartment has a clamping block, a stop-limiting seat, and a telescopic plug head arranged sequentially from the outside to the inside. The clamping blocks are a pair, and the pair of clamping blocks are arranged separately on both sides of the extension line of the plug hole. When the connector is installed, the clamping blocks on both sides move towards each other to clamp and fix the connector. The clamping blocks on both sides are provided with an embedded groove on the side that abuts against the limiting seat. The embedded groove is used to allow the telescopic connector to be inserted laterally. The clamping blocks are also provided with a heating pad on the side that abuts against the limiting seat. When the clamping blocks on both sides come into contact, the circuit where the heating pad is located is turned on. The heating pad heats the end of the connector that enters the wire-stripping compartment, thereby softening the outer insulation layer at the end of the connector, making it easier for the telescopic connector to be inserted laterally. The abutment limiting seat is used to abut and limit the insertion of the connector into one end of the wire-free connector compartment. Before the connector is inserted, the copper core at the end of the connector is cut off with connector pliers so that the end of the outer insulation layer protrudes from the end of the copper core. After the connector is inserted, the abutment limiting seat enters the outer insulation layer and abuts against the end of the copper core. The telescopic connector is composed of several connecting claws arranged in a circular array. The side of the abutment limiting seat has a through groove for the connecting claws to be inserted. In the initial state, the connecting claws are flush with the outer arc-shaped edge of the abutment limiting seat, so that they enter the outer insulation layer together after the connector is inserted. The connecting claws are slidably disposed on the telescopic push plate away from the connector. When the end of the connector softens, the telescopic push plate slides to the side of the connector, thereby pushing the connecting claws to slide laterally and finally completing the wiring. The abutment limiting seat and the connecting claws are electrically connected to the circuit breaking structure inside the circuit breaker. A piston rod is fixedly installed at the end of the telescopic push plate away from the terminal claw. The piston end of the piston rod is located in the sealant storage chamber. A push spring is sleeved on the piston rod to push the telescopic push plate closer to the terminal without external force. A locking groove is also provided on the piston rod. The locking groove is connected to the unlocking mechanism. The piston rod is released from its limiting position by the operation of the unlocking mechanism. The sealant storage chamber is also connected to a sealing hole at the end of the connector via a pipeline. During the translation and sliding of the piston rod, the sealant in the sealant storage chamber is pushed through the pipeline to finally cure and seal the end of the connector.

2. A deadfront photovoltaic DC circuit breaker device according to claim 1, characterized in that: A drive plate is fixedly installed at the bottom of each clamping block on both sides. The drive plate has a threaded hole that is threadedly engaged with the threaded screw. During the rotation of the threaded screw, the clamping blocks on both sides move towards or away from each other. A driven helical gear is also fixedly installed on the threaded screw. The driven helical gear meshes with the driving helical gear. The driving helical gear is coaxially fixedly connected to the drive connecting rod. The threaded screw is rotated by manually rotating the drive connecting rod.

3. A deadfront photovoltaic DC circuit breaker device according to claim 1 or 2, characterized in that: Several of the aforementioned connector claws are slidably installed in the slide grooves opened in the telescopic push plate. The slide grooves are also equipped with compression springs that push the connector claws closer to each other without external force. When the telescopic push plate slides towards the connector head, the connector claws move radially away from each other along the axis of the connector head, thereby overcoming the elastic force of the compression springs and doing work. The telescopic push plate is driven by the pushing mechanism to slide towards the connector head.

4. The stripping-free photovoltaic DC circuit breaker device according to claim 3, characterized in that: The telescopic push plate has a sliding rod hole, and a translational sliding rod is installed in the sliding rod hole. The stability of the telescopic push plate is ensured by the cooperation of the sliding rod hole and the translational sliding rod.

5. The stripping-free photovoltaic DC circuit breaker device according to claim 4, characterized in that: The unlocking mechanism includes a locking push rod, which is movably engaged with a locking groove. The locking push rod is also movably engaged with a pry bar. The pry bar, on the side away from the locking push rod, is movably engaged with a toggle block. The toggle block is fixedly mounted on a threaded screw. During the rotation of the threaded screw, the pry bar is pushed to generate displacement, which in turn pushes the locking push rod to disengage from the locking groove through the pry bar. At this time, the piston push rod, under the action of the push spring, pushes the telescopic push plate to slide towards the side closer to the connector.

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