An intelligent molded case circuit breaker

Abstract

The present invention relates to the technical field of circuit breakers, and in particular to an intelligent molded case circuit breaker, which comprises a shell, a connector and a fastener. Under the action of a first fastening unit, a stripped section of an external electric wire is fixed to the shell to prevent the stripped section from being out of contact with a conductive rod. At the same time, when the external electric wire is pulled out of the shell, if the force pulling the external electric wire out of the shell is less than a first preset value, the first fastening unit can hinder the separation of the stripped section of the external electric wire from the shell. If the force pulling the external electric wire out of the shell is greater than the first preset value, a second fastening unit participates in the fastening of the stripped section of the external electric wire to the shell. At this time, with the joint participation of the first fastening unit and the second fastening unit, the stripped section of the external electric wire is in a stably connected state with the conductive rod, thereby preventing power failure when the external electric wire is pulled.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an intelligent molded case circuit breaker. Background Art

[0002] When the circuit breaker is connected, the stripped section of the external wire needs to be connected to the conductive structure inside the protector. The commonly used solution for fixing the stripped section of the external wire to the internal conductive structure is to fix the stripped section of the external wire to the internal conductive structure by squeezing it with fasteners, that is, using screws to squeeze the stripped section of the external wire onto the conductive structure. If the external wire is subjected to pulling force, the stripped section of the external wire is easy to detach from the fastener, causing the external wire to detach from the circuit breaker and cause a power outage. Summary of the invention

[0003] The invention provides an intelligent molded case circuit breaker to solve the problem that the existing external wires are easily separated from the fasteners when being pulled by external force.

[0004] An intelligent molded case circuit breaker of the present invention adopts the following technical solution:

[0005] An intelligent molded case circuit breaker comprises a housing, a connecting piece and a fastener.

[0006] A conductive rod is provided on the shell; the connecting piece is used to connect the stripped section of the external wire to the conductive rod; the fastener has a first fastening unit and a second fastening unit, the first fastening unit is used to fasten the stripped section of the external wire to the shell when the connecting piece connects the stripped section of the external wire to the conductive rod; the second fastening unit is used to fasten the stripped section of the external wire to the shell when the force pulling the external wire out of the shell is greater than a first preset value.

[0007] Furthermore, the connecting piece includes a connecting ring, a conductive ring and a plurality of connecting blocks; a connecting hole is provided on the shell, the conductive rod is coaxially fixedly arranged inside the connecting hole, the conductive ring is coaxially fixedly connected to the conductive rod, and a plurality of wiring grooves are provided on the conductive ring, and the plurality of wiring grooves are evenly distributed on the outer peripheral wall of the conductive ring; the connecting ring is coaxially slidably arranged in the connecting hole, the plurality of connecting blocks are evenly distributed around the circumference of the connecting ring, each connecting block can slide in the radial direction of the connecting ring, the plurality of connecting blocks are connected end to end in sequence through telescopic rods, a clamping piece is provided on each connecting block, the stripped section of the external wire can be evenly divided into a plurality of connecting sections, and each connecting section can be clamped and fixed by a clamping piece on a connecting block; a guiding piece is provided in the connecting hole, and the guiding piece can guide the connecting block to slide in the radial direction of the connecting ring when the connecting ring slides along the axial direction of the connecting hole, and when the connecting block approaches the conductive rod along the radial direction of the connecting ring, each connecting section enters a wiring groove.

[0008] Furthermore, the first fastening unit includes a fastening block and a plurality of fastening strips, the fastening block is coaxially fixed in the connecting hole, the fastening block is arranged in a truncated cone shape, the fastening block has a first end and a second end, the diameter of the first end is smaller than the diameter of the second end, the first end is above the second end, the diameter of the first end is larger than the diameter of the conductive ring, and the diameter of the second end is smaller than the diameter of the connecting ring; the fastening block is provided with a plurality of mounting grooves, and the plurality of mounting grooves are evenly distributed on the outer peripheral wall of the fastening block; each fastening strip is arranged in a mounting groove, each fastening strip is provided with a fastening groove, and a clamping piece is arranged in the fastening groove, when each connecting segment enters a wiring groove, each connecting segment enters a fastening groove, and the clamping piece can clamp the connecting segment entering the fastening groove.

[0009] Furthermore, the second fastening unit includes an adjusting member and a plurality of fastening rings, wherein the plurality of fastening rings are coaxially arranged in the connecting hole, and two adjacent fastening rings can move away from each other, and two adjacent fastening rings can rotate relative to each other; a plurality of locking grooves are evenly arranged on the outer peripheral wall of each fastening ring, and a locking groove on the plurality of fastening rings can be in the same straight line, and each connecting section can enter a plurality of wiring grooves in the same straight line; the adjusting member is used to adjust the two adjacent fastening rings to rotate relative to each other and move away from each other when the force pulling the external wires out of the shell is greater than a first preset value.

[0010] Furthermore, the adjusting member includes a driving member, a first adjusting rod and a limiting member. There are multiple driving members, and the multiple driving members are arranged between two adjacent fastening rings. The driving member can drive the two adjacent fastening rings to move away from each other; the first adjusting rod is coaxially fixedly connected to the fastening block, and the first adjusting rod is provided with multiple first spiral grooves and multiple second spiral grooves, and the spiral directions of the first spiral groove and the second spiral groove are opposite; each fastening ring is provided with a guide block, and the guide block can slide in the first spiral groove or the second spiral groove; the limiting member is used to limit the guide block from sliding in the first spiral groove or the second spiral groove, and when the force when pulling the external wire out of the shell is greater than the first preset value, the limiting member releases the guide block from sliding in the first spiral groove or the second spiral groove.

[0011] Furthermore, the adjusting member also includes a second adjusting rod, which is coaxially rotatably sleeved on the outside of the conductive rod, and the second adjusting rod is arranged inside the first adjusting rod. The second adjusting rod is provided with an adjustment groove parallel to its own axis, and the guide blocks on the two fastening rings at the upper and lower ends can pass through the first spiral groove or the second spiral groove and then enter the adjustment groove; the limit member is used to limit the guide block on any one of the fastening rings at the end from sliding in the first spiral groove or the second spiral groove.

[0012] Furthermore, the limit member is a limit rod, each fastening strip is slidably arranged in an installation groove, and a first elastic member is arranged between each fastening strip and the installation groove, and the first elastic member is used to maintain the fastening strip in the opening position of the installation groove; there are multiple limit rods, each limit rod is slidably connected to a fastening strip up and down, and a slider is arranged on the limit rod, and a slide groove is arranged on the inner side wall of the installation groove. The slider can be slidably arranged along the slide groove, and the slide groove is inclined. When the fastening strip is in an initial state, the slider on the limit rod is at the upper end of the slide groove, and the upper end of the limit rod can abut the fastening ring at the lower end. When the force pulling the external wire out of the shell is greater than the first preset value, the connecting section can squeeze the fastening strip so that the fastening strip enters the inside of the installation groove, and the fastening strip can drive the limit rod to disengage from the fastening ring abutting the lower end.

[0013] Furthermore, the guiding member is a guiding cone surface, and a guiding rod is arranged between two adjacent connecting blocks. The guiding rod and the connecting block are fixedly connected by a telescopic rod, and the guiding rod is arranged to slide along the radial direction of the connecting ring; the guiding cone surface is arranged on the end face of the connecting hole, and when the connecting ring slides from bottom to top along the axial direction of the connecting hole, the guiding rod can abut against the guiding cone surface, so that the guiding rod slides along the radial direction of the connecting ring, and the guiding rod drives the connecting block to slide along the radial direction of the connecting ring synchronously.

[0014] Furthermore, the conductive ring is configured to be truncated cone-shaped, the diameter of the upper end of the conductive ring is smaller than the diameter of the lower end, the wiring slot is parallel to the busbar of the conductive ring, and the opening of the wiring slot faces a direction away from the axis of the conductive ring.

[0015] Furthermore, multiple fastening rings are arranged in a truncated cone shape, and the appearance of multiple clamping rings when they abut against each other is slightly truncated cone-shaped. The minimum diameter of the fastening ring at the uppermost end is equal to the diameter of the lower end of the conductive ring; the fastening strip is arranged parallel to the busbar of the fastening ring.

[0016] The beneficial effects of the present invention are as follows: an intelligent molded case circuit breaker of the present invention comprises a shell, a connector and a fastener. When connecting an external wire to the circuit breaker, the end of the external wire is firstly stripped so that the conductive metal of the external wire is exposed. By setting the connector, the stripped section of the external wire is connected to the conductive rod to ensure that the external wire is connected to the circuit breaker. Under the action of the first fastening unit, the stripped section of the external wire is fixed to the shell to prevent the stripped section from being out of contact with the conductive rod. At the same time, when the external wire is pulled out of the shell, if the force pulling the external wire out of the shell is less than the first preset value, the first fastening unit can hinder the separation of the stripped section of the external wire from the shell. If the force pulling the external wire out of the shell is greater than the first preset value, the second fastening unit participates in the fastening of the stripped section of the external wire to the shell. At this time, with the joint participation of the first fastening unit and the second fastening unit, the stripped section of the external wire is in a stably connected state with the conductive rod, thereby preventing the power outage when the external wire is pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic structural diagram of an intelligent molded case circuit breaker provided by an embodiment of the present invention;

[0019] Figure 2 A front view of an intelligent molded case circuit breaker provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Sectional view in the AA direction;

[0021] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0022] Figure 5 A schematic structural diagram of an intelligent molded case circuit breaker with the casing hidden provided by an embodiment of the present invention;

[0023] Figure 6 for Figure 5 An exploded view showing the structure;

[0024] Figure 7 An exploded diagram of the structure of a connecting piece in an intelligent molded case circuit breaker provided by an embodiment of the present invention;

[0025] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0026] Fig. 9 An exploded diagram of the structure of a second fastening unit in an intelligent molded case circuit breaker provided by an embodiment of the present invention;

[0027] Fig.10 A front view of a fastening block in an intelligent molded case circuit breaker provided by an embodiment of the present invention;

[0028] Fig.11 for Fig.10 Cross-sectional view in the middle DD direction;

[0029] Fig.12 A front view of a housing of an intelligent molded case circuit breaker provided by an embodiment of the present invention;

[0030] Fig.13 for Fig.12 Cross-sectional view along the EE direction.

[0031] In the figure: 110, housing; 111, connecting hole; 120, conductive rod; 130, connecting ring; 140, conductive ring; 141, wiring slot; 150, connecting block; 151, plug hole; 160, telescopic rod; 170, connecting section; 210, fixing block; 220, sliding block; 230, clamping block; 240, trigger rod; 241, wedge block; 310, fastening block; 311, mounting slot; 320, fastening strip; 321, fastening slot; 330, clamping protrusion; 410, fastening ring; 411, locking groove; 420, first compression spring; 430, first adjusting rod; 431, first spiral groove; 432, second spiral groove; 440, guide block; 450, second adjusting rod; 451, adjusting groove; 460, limiting rod; 470, sliding groove; 510, guiding cone; 520, guiding rod; 530, guide rail; 610, driving groove; 620, driving block; 630, locking hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] like Figures 1 to 13 As shown, an intelligent molded case circuit breaker provided in an embodiment of the present invention includes a housing 110, a connecting piece and a fastener.

[0036] A conductive rod 120 is disposed on the shell 110 . The shell 110 is made of insulating material, the conductive rod 120 is made of conductive material, and the conductive rod 120 is vertically disposed.

[0037] The connecting piece is used to connect the stripped section of the external wire to the conductive rod 120. When the external wire needs to be connected to the conductive rod 120, the external wire is first stripped to expose the conductive metal of the external wire, and then the stripped section of the external wire is connected to the conductive rod 120 using the connecting piece. For example, the connecting piece can be a fixing screw, which fixes the stripped section of the external wire to the conductive rod 120.

[0038] The fastener has a first fastening unit and a second fastening unit. The first fastening unit is used to fasten the stripped section of the external wire and the shell 110 when the connector connects the stripped section of the external wire to the conductive rod 120. Under the action of the first fastening unit, the stripped section of the external wire and the shell 110 are in a stably connected state. When the external wire is subjected to a pulling force, and the force pulling the external wire out of the shell 110 is less than a first preset value, the first fastening unit can play an obstructive role, preventing the stripped section of the external wire from being separated from the shell 110, thereby ensuring that the stripped section of the external wire and the conductive rod 120 are in a stably connected state. The second fastening unit is used to fasten the stripped section of the external wire to the shell 110 when the force pulling the external wire out of the shell 110 is greater than a first preset value. Specifically, when the external wire is subjected to a pulling force and the force pulling the external wire out of the shell 110 is greater than the first preset value, the first fastening unit and the second fastening unit can simultaneously play an obstructive role to prevent the stripped section of the external wire from being separated from the shell 110, thereby ensuring that the stripped section of the external wire is in a stably connected state with the conductive rod 120.

[0039] According to an intelligent molded case circuit breaker of the present invention, when an external wire is connected to the circuit breaker, the end of the external wire is firstly stripped so that the conductive metal of the external wire is exposed, and the stripped section of the external wire is connected to the conductive rod 120 by setting a connector to ensure that the external wire is connected to the circuit breaker. Under the action of the first fastening unit, the stripped section of the external wire is fixed to the shell 110 to prevent the stripped section from being out of contact with the conductive rod 120. At the same time, when the external wire is pulled out of the shell 110, if the force pulling the external wire out of the shell 110 is less than the first preset value, the first fastening unit can prevent the stripped section of the external wire from being separated from the shell 110. If the force pulling the external wire out of the shell 110 is greater than the first preset value, the second fastening unit participates in the fastening of the stripped section of the external wire to the shell 110. At this time, with the joint participation of the first fastening unit and the second fastening unit, the stripped section of the external wire and the conductive rod 120 are in a stably connected state, thereby preventing the external wire from being disconnected when being pulled.

[0040] In one embodiment, the connecting member includes a connecting ring 130, a conductive ring 140 and a plurality of connecting blocks 150; a connecting hole 111 is provided on the shell 110, the connecting hole 111 is vertically arranged, the conductive rod 120 is coaxially fixedly arranged inside the connecting hole 111, and the conductive ring 140 is coaxially fixedly connected to the conductive rod 120. In a specific setting, the conductive ring 140 is arranged at the upper end of the conductive rod 120, and a plurality of wiring grooves 141 are provided on the conductive ring 140, and the plurality of wiring grooves 141 are evenly distributed on the outer peripheral wall of the conductive ring 140, and the opening direction of the wiring groove 141 is set to be towards the direction away from the conductive rod 120, and the wiring groove 141 passes through the upper and lower end faces of the conductive ring 140. The connecting ring 130 is coaxially slidably arranged in the connecting hole 111. The connecting ring 130 can slide up and down in the connecting hole 111. A plurality of connecting blocks 150 are evenly distributed around the connecting ring 130. Each connecting block 150 can slide along the radial direction of the connecting ring 130. The plurality of connecting blocks 150 are connected end to end in sequence through the telescopic rod 160. Then, the plurality of connecting rings 130 form a closed ring under the action of the telescopic rod 160. A clamping piece is arranged on each connecting block 150. When the external wire is connected to the circuit breaker, the end of the external wire is stripped, and the stripped section of the external wire can be evenly divided into a plurality of connecting segments 170. Each connecting segment 170 can be twisted into a cylindrical shape, and each connecting segment 170 can be clamped and fixed by a clamping piece on a connecting block 150. For example, the clamping piece is a self-centering chuck. When each connecting segment 170 needs to be connected to the connecting block 150, the self-centering chuck can clamp and fix the end of the connecting segment 170. A guide is provided in the connection hole 111, and the guide can guide the connection block 150 to slide along the radial direction of the connection ring 130 when the connection ring 130 slides along the axial direction of the connection hole 111. Specifically, when the connection ring 130 slides from bottom to top along the axial direction of the connection hole 111, the guide can guide the connection block 150 to slide from outside to inside along the radial direction of the connection ring 130, so that the connection block 150 gradually approaches the conductive rod 120 along the radial direction of the connection ring 130. When the connection ring 130 slides from top to bottom along the axial direction of the connection hole 111, the guide can guide the connection block 150 to slide from inside to outside along the radial direction of the connection ring 130, so that the connection block 150 gradually moves away from the conductive rod 120 along the radial direction of the connection ring 130. When the connecting block 150 approaches the conductive rod 120 along the radial direction of the connecting ring 130 , each connecting segment 170 enters a wiring groove 141 . When the connecting segment 170 contacts the side wall of a wiring groove 141 , the connecting segment 170 is electrically connected to the conductive rod 120 .

[0041] In one embodiment, the connection block 150 is provided with a wire insertion hole 151, and a clamp is provided in the wire insertion hole 151. Each connection segment 170 can be inserted into one wire insertion hole 151. When the connection segment 170 is inserted into the wire insertion hole 151, the clamp fixes the connection segment 170 to the connection block 150. In a specific configuration, the connection block 150 includes a fixed block 210 and a sliding block 220, the fixed block 210 and the sliding block 220 are coaxially arranged, and the wire insertion hole 151 coaxially penetrates the fixed block 210 and the sliding block 220. The fixed block 210 is arranged above the sliding block 220, the fixed block 210 is fixedly connected to the connecting ring 130, the sliding block 220 is slidably connected to the connecting ring 130 up and down, and the side walls of the sliding block 220 and the fixed block 210 that are close to each other are set as magnetic surfaces, wherein there is a magnetic repulsion between the side walls of the sliding block 220 and the fixed block 210 that are close to each other, so that the sliding block 220 and the fixed block 210 are in a state of being away from each other when not disturbed by external forces, and when the connecting ring 130 moves to the lower end of the connecting hole 111, the sliding block 220 is squeezed and pushed, so that the sliding block 220 gradually fits against the fixed block 210.

[0042] The clamping member includes two clamping blocks 230, and the two clamping blocks 230 are both arranged in the wire insertion hole 151 of the sliding block 220. The two clamping blocks 230 can slide along the radial direction of the wire insertion hole 151. When the sliding block 220 is attached to the fixed block 210, the two clamping blocks 230 are in a state of being away from each other. In this state, the connecting section 170 is inserted into the wire insertion hole 151; when the connecting ring 130 moves from bottom to top along the connecting hole 111, the fixed block 210 and the sliding block 220 gradually move away from each other, and the two clamping blocks 230 approach each other, and the two clamping blocks 230 clamp the connecting section 170 together.

[0043] In a further configuration, two trigger rods 240 are provided on the sliding block 220, the trigger rods 240 are arranged parallel to the axis of the sliding block 220, the trigger rods 240 and the sliding block 220 are connected to each other by sliding up and down, a first spring is provided between the lower end of the trigger rod 240 and the lower end of the sliding block 220, when the first spring is in the original length state, the upper end of the trigger rod 240 is above the upper end of the sliding block 220, when the sliding block 220 approaches the fixed block 210, the trigger rod 240 can be squeezed into the interior of the sliding block 220, and the first spring is compressed. A magnetic block is provided on each trigger rod 240 and a clamping block 230, under the action of the magnetic block, each trigger rod 240 and a clamping block 230 can be in abutment. A wedge block 241 is provided at the lower end of each trigger rod 240, and the wedge block 241 can press the lower end of the clamping block 230. When the first spring is in the original length state, the wedge blocks 241 at the lower ends of the two trigger rods 240 can push the two clamping blocks 230 closer to each other, and in the process of the two clamping blocks 230 approaching each other, the clamping blocks 230 can overcome the magnetic attraction between the trigger rods 240. On the contrary, when the sliding block 220 and the fixed block 210 are in abutment, the wedge block 241 at the lower end of the trigger rod 240 no longer presses the clamping block 230, and the magnetic attraction between the trigger rod 240 and the clamping block 230 causes the two clamping blocks 230 to move away from each other.

[0044] In one embodiment, the first fastening unit includes a fastening block 310 and a plurality of fastening strips 320. The fastening block 310 is coaxially fixed in the connecting hole 111. The fastening block 310 is arranged at the lower end of the conductive rod 120. The fastening block 310 is made of insulating material. The fastening block 310 is arranged in a truncated cone shape. The fastening block 310 has a first end and a second end. The diameter of the first end is smaller than the diameter of the second end. The first end is above the second end. The diameter of the first end is larger than the diameter of the conductive ring 140. The diameter of the second end is smaller than the diameter of the connecting ring 130. When the connecting ring 130 is at the lower end of the connecting hole 111, the connecting ring 130 is at the outside of the fastening block 310. When the connecting ring 130 moves from bottom to top, the side wall of the connecting section 170 can contact the edge of the fastening block 310. A plurality of mounting grooves 311 are provided on the fastening block 310, and the plurality of mounting grooves 311 are evenly distributed on the outer peripheral wall of the fastening block 310. The opening direction of the mounting groove 311 is set to be toward the direction away from the conductive rod 120, and the mounting groove 311 passes through the upper and lower end surfaces of the fastening block 310. Since the fastening block 310 is set to be truncated cone-shaped, the mounting groove 311 is parallel to the busbar of the fastening block 310. Each fastening strip 320 is arranged in a mounting groove 311. When the fastening strip 320 is arranged in the mounting groove 311, the fastening strip 320 is parallel to the busbar of the fastening block 310. A fastening groove 321 is arranged on each fastening strip 320. The fastening groove 321 is arranged along the length direction of the fastening strip 320, and the opening direction of the fastening groove 321 is arranged to face away from the conductive rod 120. The fastening groove 321 passes through the two end faces of the fastening strip 320, that is, the length direction of the fastening groove 321 is parallel to the busbar of the fastening block 310. By setting the position of the fastening block 310 and the number of the mounting grooves 311 on the fastening block 310, each mounting groove 311 corresponds to a wiring groove 141, and each mounting groove 311 and a wiring groove 141 are in the same vertical plane. A clamping piece is provided in the fastening groove 321 . When each connecting segment 170 enters a wiring groove 141 , each connecting segment 170 enters a fastening groove 321 , and the clamping piece can clamp the connecting segment 170 entering the fastening groove 321 . In a specific setting, since the diameter of the first end of the fastening block 310 is larger than the diameter of the conductive ring 140, in the process of the connecting section 170 gradually entering the wiring groove 141, the side wall of the connecting section 170 is in contact with the edge of the fastening block 310, and the connecting section 170 is in a gradually inclined state. When the connecting section 170 enters the wiring groove 141, the side wall of the connecting section 170 gradually enters the fastening groove 321 under the action of extrusion, and the clamping member in the fastening groove 321 fixes the connecting section 170 to the inner side wall of the fastening groove 321. Accordingly, when the force pulling the external wire out of the shell 110 is less than the first preset value, under the action of the clamping member, the connecting section 170 is in a stable state in the fastening groove 321.

[0045] In one embodiment, the clamping member includes a plurality of clamping protrusions 330, and a plurality of movable grooves are arranged on the width side walls of the fastening groove 321, and the movable grooves are arranged along the width direction of the fastening groove 321. Each clamping protrusion 330 is slidably arranged in one movable groove, and there are always two clamping protrusions 330 in the same horizontal plane. A tension spring is arranged in each movable groove, and in the initial state, there is a gap between the two clamping protrusions 330. The connecting section 170 can squeeze the two clamping protrusions 330 away from each other, so that the gap between the two clamping protrusions 330 is increased, ensuring that the connecting section 170 can enter the fastening groove 321. When the connecting section 170 enters the fastening groove 321, the plurality of clamping protrusions 330 can fix the connecting section 170 on the fastening strip 320. When the force when pulling the external wire out of the housing 110 is less than the first preset value, under the action of the plurality of clamping protrusions 330, the connecting section 170 cannot move relative to the fastening strip 320.

[0046] In one embodiment, the second fastening unit includes an adjusting member and a plurality of fastening rings 410, wherein the plurality of fastening rings 410 are coaxially arranged in the connecting hole 111, and the plurality of fastening rings 410 are arranged between the fastening block 310 and the conductive ring 140. Two adjacent fastening rings 410 can be away from each other, and two adjacent fastening rings 410 can rotate relative to each other. A plurality of locking grooves 411 are arranged on the outer peripheral wall of each fastening ring 410, and the plurality of locking grooves 411 are evenly distributed on the outer peripheral wall of the fastening ring 410, wherein the opening direction of each locking groove 411 is arranged to face the direction away from the conductive rod 120, and the locking groove 411 passes through the upper and lower end faces of the fastening ring 410. By adjusting the positions of the plurality of fastening rings 410, the locking grooves 411 on the two adjacent fastening rings 410 can be in the same straight line, and each connecting section 170 can enter the plurality of wiring grooves 141 in the same straight line. In a further configuration, the diameter of each fastening ring 410 is smaller than the diameter of the first end of the fastening block 310, and when the connecting section 170 enters the fastening groove 321, the connecting section 170 can enter the locking grooves 411 on the multiple fastening rings 410. The adjusting member is used to adjust the two adjacent fastening rings 410 to rotate relative to each other and move away from each other when the force pulling the external wires out of the housing 110 is greater than the first preset value. Specifically, when the force pulling the external wires out of the housing 110 is greater than the first preset value, the adjusting member adjusts the two adjacent fastening rings 410 to rotate relative to each other and move away from each other, and the connecting section 170 forms a wave shape between the multiple fastening rings 410, so that the resistance of the connecting section 170 to detach from the fastening ring 410 is further increased, further ensuring that the connecting section 170 is in a stable state in the connecting hole 111.

[0047] In one embodiment, the adjusting member includes a driving member, a first adjusting rod 430 and a limiting member. A plurality of driving members are provided, and the plurality of driving members are provided between two adjacent fastening rings 410. The driving member can drive the two adjacent fastening rings 410 to move away from each other. In a specific setting, the driving member is a first compression spring 420, and the first compression spring 420 is always in a compressed state, that is, the first compression spring 420 has an extended restoring force. The first compression spring 420 is vertically arranged, and the first compression spring 420 is coaxially arranged with the fastening ring 410. The two ends of the first compression spring 420 are respectively in contact with the two adjacent fastening rings 410. The extended restoring force of the first compression spring 420 can push the two adjacent fastening rings 410 away from each other. The first adjusting rod 430 is coaxially fixedly connected to the fastening block 310, and the first adjusting rod 430 is coaxially sleeved on the outside of the conductive rod 120. The first adjusting rod 430 is always in a stationary state. The first adjusting rod 430 is made of insulating material. A plurality of first spiral grooves 431 and a plurality of second spiral grooves 432 are arranged on the first adjusting rod 430. The spiral directions of the first spiral groove 431 and the second spiral groove 432 are opposite, and the first spiral groove 431 and the second spiral groove 432 are alternately arranged in the axial direction of the first adjusting rod 430. Each fastening ring 410 is provided with a guide block 440, which can slide in the first spiral groove 431 or the second spiral groove 432. In a specific setting, taking two adjacent fastening rings 410 as an example, the guide block 440 in the upper fastening ring 410 is slidably arranged along the first spiral groove 431, and the guide block 440 in the lower fastening ring 410 is slidably arranged along the second spiral groove 432. Under the action of the first compression spring 420, the two adjacent fastening rings 410 can move away from each other in a state of relative rotation. The limiter is used to limit the guide block 440 from sliding in the first spiral groove 431 or the second spiral groove 432. When the force when pulling the external wire out of the housing 110 is greater than the first preset value, the limiter releases the guide block 440 from sliding in the first spiral groove 431 or the second spiral groove 432. It can be understood that when the force pulling the external wires out of the shell 110 is less than the first preset value, the two adjacent fastening rings 410 are in a state of abutting each other, and when the force pulling the external wires out of the shell 110 is greater than the first preset value, the two adjacent fastening rings 410 can move away from each other in a state of relative rotation, causing the connecting section 170 to form a wave shape between the multiple fastening rings 410, so that the resistance of the connecting section 170 to separate from the fastening ring 410 is further increased.

[0048] In one embodiment, the adjusting member also includes a second adjusting rod 450, which is coaxially rotatably sleeved on the outside of the conductive rod 120, and the second adjusting rod 450 is arranged inside the first adjusting rod 430, that is, the second adjusting rod 450 is arranged between the first adjusting rod 430 and the conductive rod 120, and the second adjusting rod 450 can rotate relative to the first adjusting rod 430. The second adjusting rod 450 is provided with an adjusting groove 451 parallel to its own axis, and the adjusting groove 451 is vertically arranged. The guide blocks 440 on the two fastening rings 410 at the upper and lower ends can enter the adjusting groove 451 after passing through the first spiral groove 431 or the second spiral groove 432. When the fastening rings 410 at the upper and lower ends rotate along the first spiral groove 431 or the second spiral groove 432, the second adjusting rod 450 rotates on the conductive rod 120 through the transmission of the guide blocks 440. Under the action of the limiter, the force when the external wire is pulled out of the housing 110 is less than the first preset value, and the first adjusting rod 430 and the second adjusting rod 450 are in a relatively static state. Since the guide blocks 440 on the two fastening rings 410 at the upper and lower ends are in the adjusting groove 451 at the same time, the two fastening rings 410 at the upper and lower ends need to move at the same time, and the limiter is used to limit the guide block 440 on any one of the fastening rings 410 at the end from sliding in the first spiral groove 431 or the second spiral groove 432.

[0049] In one embodiment, the limiting member is a limiting rod 460, which is used to push the fastening ring 410 at the lower end when the force pulling the external wire out of the housing 110 is less than a first preset value, so that the guide block 440 on the fastening ring 410 at the lower end cannot move in the first spiral groove 431 or the second spiral groove 432. In a specific setting, each fastening strip 320 is slidably arranged in a mounting groove 311, and when the fastening strip 320 slides along the mounting groove 311, the length direction of the fastening groove 321 remains parallel to the busbar of the fastening block 310. A first elastic member is arranged between each fastening strip 320 and the mounting groove 311, and the first elastic member is used to maintain the fastening strip 320 in the opening position of the mounting groove 311. In this embodiment, the first elastic member is a second compression spring, which is arranged along the radial direction of the fastening block 310, one end of the second compression spring is connected to the end of the mounting slot 311 close to the conductive rod 120, and the other end of the second compression spring is connected to the fastening strip 320. The second compression spring is always in a compressed state, and the restoring force of the second compression spring is used to maintain the fastening strip 320 in the open position of the mounting slot 311. In other embodiments, the first elastic member is a first tension spring, which is arranged along the radial direction of the fastening block 310, one end of the first tension spring is connected to the end of the mounting slot 311 away from the conductive rod 120, and the other end of the first tension spring is connected to the fastening strip 320. The first tension spring is always in a stretched state, and the restoring force of the first tension spring is used to maintain the fastening strip 320 in the open position of the mounting slot 311. There are multiple limit rods 460, each of which is connected to a fastening strip 320 for upward and downward sliding. The limit rod 460 is vertically arranged, and a slider is arranged on the limit rod 460. A slide groove 470 is arranged on the inner wall of the mounting groove 311. The slide groove 470 is inclined, and the slider can be slid along the slide groove 470. When the fastening strip 320 is in the initial state, the slider on the limit rod 460 is at the upper end of the slide groove 470, and the upper end of the limit rod 460 can abut the fastening ring 410 at the lower end. When the force pulling the external wires out of the shell 110 is greater than the first preset value, the connecting section 170 can squeeze the fastening strip 320 so that the fastening strip 320 enters the installation groove 311. At this time, the first elastic member is deformed, and the fastening strip 320 can drive the limiting rod 460 to disengage from the fastening ring 410 abutting the lower end. When the fastening strip 320 pushes the limiting rod 460, the slider on the limiting rod 460 gradually slides along the slide groove 470, so that the limiting rod 460 gradually enters the installation groove 311. When the slider on the limiting rod 460 slides along the slide groove 470, the limiting rod 460 releases the restriction on the guide block 440 on the lower fastening ring 410 to slide in the first spiral groove 431 or the second spiral groove 432.

[0050] In one embodiment, the guide member is a guide cone 510, which is disposed at the upper end of the connection hole 111, wherein the end of the guide cone 510 close to the axis of the conductive rod 120 is located below the end away from the axis of the conductive rod 120. A guide rod 520 is disposed between two adjacent connection blocks 150, and the guide rod 520 is fixedly connected to the connection block 150 via a telescopic rod 160. In a specific configuration, the telescopic rod 160 is disposed between the guide rod 520 and the fixed block 210 of the connection block 150, the guide rod 520 is disposed vertically, a plurality of guide rails 530 are disposed in the circumferential direction of the connection ring 130, each guide rail 530 is disposed along the radial direction of the connection ring 130, and a plurality of guide rails 530 are evenly distributed in the circumferential direction of the connection ring 130, the guide rod 520 is slidably disposed along the guide rail 530, and when the guide rod 520 contacts the guide cone 510, the guide cone 510 can guide the guide rod 520 so that the guide rod 520 slides along the guide rail 530. In a further configuration, a return spring is disposed between the guide rod 520 and the end of the guide rail 530, and in an initial state, the guide rod 520 is at the end of the guide rail 530 away from the conductive rod 120, and the return spring is in an original length state. Furthermore, when the connecting ring 130 slides from bottom to top along the axial direction of the connecting hole 111, the guide rod 520 can abut against the guide cone 510, so that the guide rod 520 slides along the radial direction of the connecting ring 130, and the guide rod 520 gradually approaches the axial direction of the conductive rod 120, and the reset spring is gradually squeezed, and the guide rod 520 drives the connecting block 150 to slide synchronously along the radial direction of the connecting ring 130, and the clamping piece on the connecting block 150 gradually approaches the conductive rod 120 when clamping the connecting section 170 until the connecting section 170 enters the wiring groove 141. When the connecting section 170 enters the wiring groove 141, the connecting section 170 and the conductive rod 120 are electrically connected.

[0051] In one embodiment, the conductive ring 140 is configured to be truncated cone-shaped, the diameter of the upper end of the conductive ring 140 is smaller than the diameter of the lower end, and in a further configuration, the diameter of the lower end of the conductive ring 140 is equal to the diameter of the uppermost clamping ring, the wiring groove 141 is parallel to the busbar of the conductive ring 140, and the opening of the wiring groove 141 faces a direction away from the axis of the conductive ring 140. By configuring the structure of the conductive ring 140, it is ensured that when the connecting block 150 slides along the radial direction of the connecting ring 130, the connecting section 170 can smoothly enter the wiring groove 141.

[0052] In one embodiment, multiple fastening rings 410 are all configured to be truncated cone-shaped, and the outer shape of multiple clamping rings when they abut against each other is slightly truncated cone-shaped. It is easy to understand that, among two adjacent fastening rings 410, the lower end diameter of the adjacent upper fastening ring 410 is equal to the upper end diameter of the adjacent lower fastening ring 410, the minimum diameter of the fastening ring 410 at the uppermost end is equal to the diameter of the lower end of the conductive ring 140, and the maximum diameter of the fastening ring 410 at the lowermost end is equal to the diameter of the first end of the fastening block 310. By specifically defining the shape and diameter of the fastening ring 410, the connecting section 170 can enter the wiring groove 141, the fastening groove 321 and the locking groove 411 at the same time, and the connecting section 170 is in a straight line in the connecting hole 111. When the connecting section 170 needs to be detached from the shell 110, the connecting section 170 does not require an additional process to straighten it, thereby preventing the connecting section 170 from metal fatigue.

[0053] In one embodiment, a driving groove 610 is provided on the housing 110, the driving groove 610 is connected to the connecting hole 111, the length direction of the driving groove 610 is parallel to the axial direction of the connecting hole 111, and a driving block 620 is connected to the connecting ring 130, the driving block 620 is arranged outside the housing 110, and the driving block 620 is slidably arranged along the driving groove 610. When the driving block 620 is pushed by a staff member to slide along the driving groove 610, the connecting ring 130 slides in the connecting hole 111 at the same time. In a further configuration, a locking hole 630 is provided on the housing 110, a locking rod is provided on the driving block 620, and the locking rod can be inserted into the locking hole 630. The locking hole 630 is provided at the upper end and the lower end of the driving groove 610. By providing the locking hole 630, it can be ensured that the driving block 620 can be stably located at the upper end or the lower end of the driving groove 610.

[0054] In one embodiment, three connection holes 111 are provided on the housing 110 , and a connection piece and a fastener are provided in each connection hole 111 . The three connection holes 111 are respectively connected to a neutral wire, a ground wire, and a live wire.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent molded case circuit breaker, characterized in that: include: A housing, wherein a conductive rod is arranged on the housing; A connector, which is used to connect the stripped section of the external wire to the conductive rod; A fastener, the fastener having a first fastening unit and a second fastening unit, the first fastening unit being used to fasten the stripped section of the external wire and the housing when the connector connects the stripped section of the external wire to the conductive rod; The second fastening unit is used to fasten the stripped section of the external wire to the housing when the force pulling the external wire away from the housing is greater than a first preset value; The connecting piece comprises a connecting ring, a conductive ring and a plurality of connecting blocks; a connecting hole is provided on the shell, a conductive rod is coaxially fixedly provided inside the connecting hole, a conductive ring is coaxially fixedly connected to the conductive rod, a plurality of wiring grooves are provided on the conductive ring, and the plurality of wiring grooves are evenly distributed on the outer peripheral wall of the conductive ring; the connecting ring is coaxially slidably provided in the connecting hole, a plurality of connecting blocks are evenly distributed around the circumference of the connecting ring, each connecting block can slide in the radial direction of the connecting ring, a plurality of connecting blocks are connected end to end in sequence through telescopic rods, a clamping piece is provided on each connecting block, a stripped section of an external electric wire can be evenly divided into a plurality of connecting sections, each connecting section can be clamped and fixed by a clamping piece on a connecting block; a guiding piece is provided in the connecting hole, the guiding piece can guide the connecting block to slide in the radial direction of the connecting ring when the connecting ring slides in the axial direction of the connecting hole, and when the connecting block approaches the conductive rod in the radial direction of the connecting ring, each connecting section enters a wiring groove; The first fastening unit comprises a fastening block and a plurality of fastening strips, the fastening block is coaxially fixedly arranged in the connecting hole, the fastening block is arranged in a truncated cone shape, the fastening block has a first end and a second end, the diameter of the first end is smaller than the diameter of the second end, the first end is located above the second end, the diameter of the first end is larger than the diameter of the conductive ring, and the diameter of the second end is smaller than the diameter of the connecting ring; the fastening block is provided with a plurality of mounting grooves, and the plurality of mounting grooves are evenly distributed on the outer peripheral wall of the fastening block; each fastening strip is arranged in a mounting groove, each fastening strip is provided with a fastening groove, and a clamping piece is arranged in the fastening groove, when each connecting segment enters a wiring groove, each connecting segment enters a fastening groove, and the clamping piece can clamp the connecting segment entering the fastening groove; The second fastening unit includes an adjusting member and a plurality of fastening rings, wherein the plurality of fastening rings are coaxially arranged in the connecting hole, and two adjacent fastening rings can move away from each other and can rotate relative to each other; a plurality of locking grooves are evenly arranged on the outer peripheral wall of each fastening ring, and a locking groove on the plurality of fastening rings can be in the same straight line, and each connecting section can enter a plurality of wiring grooves in the same straight line; the adjusting member is used for adjusting the two adjacent fastening rings to rotate relative to each other and move away from each other when the force pulling the external wires out of the shell is greater than a first preset value.

2. The intelligent molded case circuit breaker according to claim 1, characterized in that: The adjusting member includes a driving member, a first adjusting rod and a limiting member. There are multiple driving members, and the multiple driving members are arranged between two adjacent fastening rings. The driving member can drive the two adjacent fastening rings to move away from each other; the first adjusting rod is coaxially fixedly connected to the fastening block, and the first adjusting rod is provided with multiple first spiral grooves and multiple second spiral grooves, and the spiral directions of the first spiral groove and the second spiral groove are opposite; each fastening ring is provided with a guide block, and the guide block can slide in the first spiral groove or the second spiral groove; the limiting member is used to limit the guide block from sliding in the first spiral groove or the second spiral groove, and when the force when pulling the external wire out of the shell is greater than the first preset value, the limiting member releases the guide block from sliding in the first spiral groove or the second spiral groove.

3. The intelligent molded case circuit breaker according to claim 2, characterized in that: The adjusting member also includes a second adjusting rod, which is coaxially rotatably sleeved on the outside of the conductive rod and is arranged inside the first adjusting rod. The second adjusting rod is provided with an adjusting groove parallel to its own axis. The guide blocks on the two fastening rings at the upper and lower ends can pass through the first spiral groove or the second spiral groove and then enter the adjusting groove; the limit member is used to limit the guide block on any one of the fastening rings at the end from sliding in the first spiral groove or the second spiral groove.

4. The intelligent molded case circuit breaker according to claim 3, characterized in that: The limiting member is a limiting rod, each fastening strip is slidably arranged in an installation groove, and a first elastic member is arranged between each fastening strip and the installation groove, and the first elastic member is used to maintain the fastening strip in the opening position of the installation groove; there are multiple limiting rods, each limiting rod is slidably connected to a fastening strip up and down, and a slider is arranged on the limiting rod, and a slide groove is arranged on the inner side wall of the installation groove, and the slider can be slidably arranged along the slide groove, and the slide groove is inclined. When the fastening strip is in an initial state, the slider on the limiting rod is at the upper end of the slide groove, and the upper end of the limiting rod can abut the fastening ring at the lower end. When the force pulling the external wire out of the shell is greater than the first preset value, the connecting section can squeeze the fastening strip so that the fastening strip enters the inside of the installation groove, and the fastening strip can drive the limiting rod to disengage from the fastening ring abutting the lower end.

5. The intelligent molded case circuit breaker according to claim 1, characterized in that: The guiding member is a guiding conical surface, and a guiding rod is arranged between two adjacent connecting blocks. The guiding rod and the connecting block are fixedly connected by a telescopic rod, and the guiding rod is arranged to slide along the radial direction of the connecting ring; the guiding conical surface is arranged on the end face of the connecting hole, and when the connecting ring slides from bottom to top along the axial direction of the connecting hole, the guiding rod can abut against the guiding conical surface, so that the guiding rod slides along the radial direction of the connecting ring, and the guiding rod drives the connecting block to slide along the radial direction of the connecting ring synchronously.

6. The intelligent molded case circuit breaker according to claim 1, characterized in that: The conductive ring is configured in a truncated cone shape, the diameter of the upper end of the conductive ring is smaller than the diameter of the lower end, the wiring slot is parallel to the busbar of the conductive ring, and the opening of the wiring slot faces a direction away from the axis of the conductive ring.

7. The intelligent molded case circuit breaker according to claim 6, characterized in that: The multiple fastening rings are all arranged in a truncated cone shape. The appearance of the multiple clamping rings when they abut against each other is slightly truncated cone-shaped. The minimum diameter of the fastening ring at the uppermost end is equal to the diameter of the lower end of the conductive ring. The fastening strip is arranged parallel to the busbar of the fastening ring.

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