Incentive Interrupter

Abstract

The present application provides an excitation interrupter, which is applied to an electronic circuit; the excitation interrupter includes a housing, an excitation source, an impact member, a clamping structure, a first conductor and a second conductor. A first opening is formed on the housing, and the excitation source is arranged at the first opening to block the first opening; an impact member is arranged below the excitation source, and a clamping structure is arranged below the impact member. The first conductor and the second conductor are clamped by the clamping structure; the first conductor is connected between the live wire of the power supply and the live wire of the electrical appliance in the electronic circuit, and the second conductor is connected between the neutral wire of the power supply and the neutral wire of the electrical appliance in the electronic circuit; when abnormal current is generated on the first conductor and the second conductor, the excitation source is triggered and provides an impact force to the impact member, so that the impact member impacts the clamping structure, and after the clamping structure receives the impact force, the first conductor and the second conductor are pulled off to cut off the power supply of the electronic circuit. In this way, the speed of cutting off the power supply can be increased when abnormal current occurs in the electronic circuit.

Description

Technical Field

[0001] This application belongs to the technical field of emergency protection devices, and particularly relates to an excitation interrupter. Background Art

[0002] Three-phase motors are common power drive devices in new energy vehicles. The three-phase circuit provides a power source for the motor, enabling the vehicle to run normally. To protect the safe operation of the three-phase motor, when the short-circuit current is very large, the power supply should be quickly cut off. The most common method is to connect a fuse in series in the circuit.

[0003] The fuse melt is connected in series in the protected circuit. When the circuit is working normally, the fuse has no effect and is equivalent to a wire, with a very small voltage drop across it that can be ignored. When the motor experiences faults such as short circuit, increased load, blocked rotation, or missing a phase, a large current will flow through the fuse to the motor. Without a fuse, the large current will directly flow into the motor, and the motor will be damaged, etc. With a fuse, the large current first flows through the fuse, and the fuse will melt due to heat and actuate, cutting off the power supply of the excitation coil of the AC contactor, causing the contactor contacts to disconnect, thus cutting off the power supply of the motor and stopping the motor from running, thereby protecting the safety of the motor.

[0004] However, when a large current occurs in a traditional fuse, the melting of the fuse melt takes a certain amount of time, and the response time of melting is slow. Summary of the Invention

[0005] This application provides an excitation interrupter in order to improve the speed of cutting off the power supply.

[0006] This application provides an excitation interrupter applied to an electronic circuit; the excitation interrupter includes a housing, an excitation source, an impact member, a clamping structure, a first conductor, and a second conductor. A first opening is provided on the housing, and the excitation source is disposed in the first opening to block the first opening;

[0007] The impact member is disposed below the excitation source, and a clamping structure is disposed below the impact member. The first conductor and the second conductor are clamped on the clamping structure;

[0008] When an abnormal current occurs on the first conductor and the second conductor, the excitation source is triggered and provides an impact force to the impact member, so that the impact member impacts the clamping structure. After receiving the impact force, the clamping structure breaks the first conductor and the second conductor to cut off the power supply of the electronic circuit.

[0009] In a possible embodiment, the clamping structure includes a first clamping member, a first sub-clamping member, and a second sub-clamping member; a first clamping portion is provided on the first sub-clamping member, and a second clamping portion is provided on the second sub-clamping member; the first clamping member includes a first substrate, a third sub-clamping member extends from the first end of the first end face of the first substrate in a direction away from the first end face, and a fourth sub-clamping member extends from the second end of the first end face of the first substrate in a direction away from the first end face; a third clamping portion is provided at the end of the third sub-clamping member away from the first end face, and a fourth clamping portion is provided at the end of the fourth sub-clamping member away from the first end face; the first clamping portion and the third clamping portion are combined to form a first cavity for clamping the first conductor in the first cavity; the second clamping portion and the fourth clamping portion are combined to form a second cavity for clamping the second conductor in the second cavity.

[0010] In a possible embodiment, the clamping structure includes a first sub-clamping member, a second sub-clamping member, a third sub-clamping member, and a fourth sub-clamping member; the first sub-clamping member and the second sub-clamping member are arranged below the impact member; a first clamping portion is provided on the first sub-clamping member, and a second clamping portion is provided on the second sub-clamping member; a third clamping portion is provided at the first end of the third sub-clamping member, and a fourth clamping portion is provided at the first end of the fourth sub-clamping member; the first clamping portion and the third clamping portion are combined to form a first cavity for clamping the first conductor in the first cavity; the second clamping portion and the fourth clamping portion are combined to form a second cavity for clamping the second conductor in the second cavity.

[0011] In a possible embodiment, a first groove is formed by inward concavity at the first lateral center of the first conductor, a second groove is formed by inward concavity at the second lateral middle of the first conductor, and a first pre-fracture portion is formed between the first groove and the second groove; a third groove is formed by inward concavity at the first lateral center of the second conductor, a fourth groove is formed by inward concavity at the second lateral middle of the second conductor, and a second pre-fracture portion is formed between the third groove and the fourth groove; the first sub-clamping member and the third sub-clamping member are clamped on the first pre-fracture portion by combining with the first groove and the second groove, and the second sub-clamping member and the fourth sub-clamping member are clamped on the second pre-fracture portion by combining with the third groove and the fourth groove.

[0012] In a possible embodiment, the clamping structure includes a first clamping member, the first clamping member includes a first substrate, a third sub-clamping member extends from the first end of the first end face of the first substrate in a direction away from the first end face, and a fourth sub-clamping member extends from the second end of the first end face of the first substrate in a direction away from the first end face; a third clamping portion is provided at the end of the third sub-clamping member away from the first end face, and a fourth clamping portion is provided at the end of the fourth sub-clamping member away from the first end face; a fifth groove with an opening facing the direction perpendicular to the gravity direction and facing the fourth clamping portion is provided on the third clamping portion, and a sixth groove with an opening facing the direction perpendicular to the gravity direction and facing the third clamping portion is provided on the fourth clamping portion; the fifth groove is used for clamping the first conductor, and the sixth groove is used for clamping the second conductor.

[0013] In a possible embodiment, a seventh groove is formed by inwardly concaving the first lateral center of the first conductor to form a first pre-fracture portion; an eighth groove is formed by inwardly concaving the second lateral center of the second conductor to form a second pre-fracture portion; the third clamping portion is combined with the seventh groove through the fifth groove to clamp on the first pre-fracture portion; the fourth clamping portion is combined with the eighth groove through the sixth groove to clamp on the second pre-fracture portion.

[0014] In a possible embodiment, the side of the impact member close to the excitation source is inwardly concaved towards the side away from the excitation source to form a first buffer space, and the first buffer space is used for providing buffering when the excitation source is triggered to release high-pressure gas.

[0015] In a possible embodiment, it further includes a sealed cavity and at least one melt, at least one arc extinguishing chamber is provided in the sealed cavity; the at least one melt passes through the at least one arc extinguishing chamber in one-to-one correspondence, and both ends of each melt are respectively connected to the first conductor and the second conductor.

[0016] In a possible embodiment, a sliding cavity is included in the housing, the sliding cavity is communicated with the first opening, the impact member and the clamping structure are sequentially arranged at one end of the sliding cavity, and the sealed cavity is arranged at the bottom of the second end of the sliding cavity; a ninth groove is formed between the third sub-clamping member and the fourth sub-clamping member; when the clamping structure slides from the first end of the sliding cavity to the second end of the sliding cavity, the sealed cavity is embedded in the ninth groove.

[0017] In a possible embodiment, a second buffer space is provided at an interval between the impact member and the clamping structure; or, the clamping structure abuts against the lower part of the impact member.

[0018] It can be seen that the excitation interrupter in the present application is applied to an electronic circuit; wherein, the excitation interrupter includes a housing, an excitation source, an impact member, a clamping structure, a first conductor and a second conductor. A first opening is formed on the housing, and the excitation source is disposed in the first opening to block the first opening; an impact member is disposed below the excitation source, and a clamping structure is disposed below the impact member. The first conductor and the second conductor are clamped on the clamping structure; the first conductor is connected between the live wire of the power supply and the live wire of the electrical appliance in the electronic circuit, and the second conductor is connected between the neutral wire of the power supply and the neutral wire of the electrical appliance in the electronic circuit. In this way, when the excitation interrupter is connected between the electronic circuit and the power supply, when an abnormal circuit occurs in the circuit, the excitation source in the excitation interrupter is triggered, and the impact member is quickly pushed to impact the clamping structure, so that after the clamping structure receives the impact force, the first conductor and the second conductor are quickly broken to cut off the power supply of the electronic circuit, thereby improving the power cut-off speed of the power supply. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the first excitation interrupter provided by an embodiment of the present application;

[0021] Figure 2 It is a schematic structural diagram of the second excitation interrupter provided by an embodiment of the present application;

[0022] Figure 3 It is a schematic structural diagram of the first clamping member provided by an embodiment of the present application;

[0023] Figure 4 It is a schematic structural diagram of the first conductor and the second conductor provided by an embodiment of the present application;

[0024] Figure 5 It is a schematic structural diagram of the first melt and the second melt provided by an embodiment of the present application;

[0025] Figure 6 It is a schematic structural diagram of the third excitation interrupter provided by an embodiment of the present application;

[0026] Figure 7 It is a schematic structural diagram of the fourth excitation interrupter provided by an embodiment of the present application;

[0027] Figure 8It is a schematic structural diagram of the fifth type of excitation interrupter provided by an embodiment of the present application;

[0028] Figure 9 It is a schematic structural diagram of a clamping structure provided by an embodiment of the present application;

[0029] Figure 10 It is a schematic structural diagram of the second type of first clamping member provided by an embodiment of the present application. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0031] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, systems, products or devices.

[0032] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0033] The relevant terms involved in the present application will be introduced below.

[0034] An excitation fuse / excitation interrupter refers to a fuse that uses an electrical signal to trigger an excitation device and release stored energy to achieve a circuit protection action. During normal operation, current passes through the busbar. The busbar has a small resistance and strong ability to withstand impact current. When an overload, short-circuit fault occurs in the circuit or a small multiple continuous overload fault current appears, the external control sends a firing signal to the igniter of the excitation fuse, triggering the excitation device to release the stored energy, causing the fuse element to quickly open and cut off the short-circuit current, thereby achieving circuit protection.

[0035] At present, three-phase motors are common power drive devices in new energy vehicles. The three-phase circuit provides a power source for the motor, enabling the vehicle to drive normally. To protect the safe operation of the three-phase motor, when the short-circuit current is very large, the power supply should be quickly cut off. The most common method is to connect a fuse in series in the circuit. The fuse melt is connected in series in the protected circuit. When the circuit is working normally, the fuse has no effect and is equivalent to a wire, with a very small voltage drop across it, which can be ignored. When faults such as short circuit, increased load, blocked rotation, or missing one phase occur in the motor, a large current will flow through the fuse to the motor. Without a fuse, the large current will directly flow into the motor, and the motor will be damaged. When there is a fuse, the large current first flows through the fuse, and the fuse will melt due to heat and act, cutting off the power supply of the excitation coil of the AC contactor, causing the contactor contacts to disconnect, thus cutting off the power supply of the motor and stopping the motor from running, thereby protecting the safety of the motor. However, when a large current is generated in a traditional fuse, the melting of the fuse melt takes a certain amount of time, and the response time of melting is slow.

[0036] To solve the above problems, an embodiment of the present application provides an excitation breaker. The excitation breaker can be applied to scenarios where an abnormally large current is generated in a circuit. By setting a housing, an excitation source, an impact member, a clamping structure, a first conductor, and a second conductor in the excitation fuse, and opening a first opening on the housing, the excitation source is arranged in the first opening to block the first opening; an impact member is arranged below the excitation source, and a clamping structure is arranged below the impact member, and the first conductor and the second conductor are clamped on the clamping structure; the first conductor is connected between the live wire of the power supply and the live wire of the electrical appliance in the electronic circuit, and the second conductor is connected between the neutral wire of the power supply and the neutral wire of the electrical appliance in the electronic circuit; when an abnormal current is generated on the first conductor and the second conductor, the excitation source is triggered and provides an impact force to the impact member, so that the impact member impacts the clamping structure, and after the clamping structure receives the impact force, it breaks the first conductor and the second conductor to cut off the power supply of the electronic circuit. In this way, by connecting the excitation breaker between the electronic circuit and the power supply, when an abnormal current is generated in the circuit, the excitation source in the excitation breaker is triggered, quickly pushing the impact member to impact the clamping structure, so that after the clamping structure receives the impact force, it quickly breaks the first conductor and the second conductor to cut off the power supply of the electronic circuit, improving the cutting speed of the power supply. This solution can be applied to a variety of scenarios, including but not limited to the application scenarios mentioned above.

[0037] The specific structure of the excitation breaker will be introduced in detail below.

[0038] Please refer to Figure 1 、 Figure 2 and Figures 6 - 8, this application also provides an excitation interrupter, which is applied to an electronic circuit; the excitation interrupter includes a housing 10, an excitation source 20, an impact member 30, a clamping structure 40, a first conductor 51 and a second conductor 52. A first opening is formed on the housing 10, and the excitation source 20 is arranged at the first opening to block the first opening;

[0039] The impact member 30 is arranged below the excitation source 20, and the clamping structure 40 is arranged below the impact member 30. The first conductor 51 and the second conductor 52 are clamped on the clamping structure 40;

[0040] When abnormal currents occur on the first conductor 51 and the second conductor 52, the excitation source 20 is triggered and provides an impact force to the impact member 30, so that the impact member 30 impacts the clamping structure 40. After receiving the impact force, the clamping structure 40 breaks the first conductor 51 and the second conductor 52 to cut off the power supply of the electronic circuit.

[0041] In a specific implementation, the terminal excitation interrupter in the embodiment of this application is applied to an electronic circuit, and the electronic circuit can be a three-phase circuit. The first conductor 51 is connected between the power live wire of the electronic circuit and the live wire of the electrical appliance of the electronic circuit, and the second conductor 52 is connected between the power neutral wire and the neutral wire of the electrical appliance of the electronic circuit; in this way, when abnormal currents occur in the electronic circuit, the power circuit of the electronic circuit can be cut off through the excitation interrupter to provide circuit protection for the electronic circuit.

[0042] Specifically, the housing 10, the impact member 30 and the clamping structure 40 can be formed by injection molding of high-temperature resistant engineering plastics. Among them, a first opening is formed on the housing 10, and a sliding cavity 90 is arranged inside the housing 10. The first opening is communicated with the sliding cavity 90. In this embodiment, by arranging the excitation source 20 at the first opening and covering the first opening with the excitation source 20, when the excitation source 20 is triggered, the high-pressure gas generated by the excitation source 20 can be ejected into the sliding cavity 90 and the leakage of the high-pressure gas from the first opening is avoided.

[0043] Furthermore, the impact member 30 is arranged below the first opening and the excitation source 20. The size of the impact member 30 is slightly larger than the inner cross-section of the housing 10, so that the impact member 30 can be stuck on the inner wall of the housing 10 through friction. It can be understood that in order to avoid too large friction between the impact member 30 and the inner wall of the housing 10, the size of the impact member 30 should not be too large, and only the friction force needs to be just larger than the gravity or the sliding force of the impact member 30 towards the bottom of the sliding cavity 90, or slightly larger; for example, the difference between the friction force and the gravity or the sliding force is 1-10 N (Newton). It can be understood that the specific value of the difference can be other values and is not limited here.

[0044] Furthermore, a clamping structure 40 is provided below the impact member 30, and the clamping structure 40 clamps the first conductor 51 and the second conductor 52. It can be understood that in order to connect the first conductor 51 and the second conductor 52 to an external power supply and a circuit, therefore, a second opening, a third opening, a fourth opening, and a fifth opening are further formed in the housing 10; wherein, the second opening and the third opening are provided on the first side of the housing 10, and the fourth opening and the fifth opening are provided on the second side of the housing 10; the first conductor 51 penetrates into the housing 10 from the second opening and penetrates out from the fourth opening; the second conductor 52 penetrates into the housing 10 from the third opening and penetrates out from the fifth opening.

[0045] When abnormal current is generated on the first conductor 51 and the second conductor 52, the excitation source 20 is triggered to generate high-pressure gas, and the high-pressure gas generates a driving force to push the impact member 30 out at a high speed, so that the impact member 30 impacts the clamping structure 40. After the clamping structure 40 receives the impact force, it breaks the first conductor 51 and the second conductor 52 to cut off the power supply of the electronic circuit.

[0046] It can be seen that in this embodiment, by providing a housing 10, an excitation source 20, an impact member 30, a clamping structure 40, a first conductor 51, and a second conductor 52 in the excitation fuse, and a first opening is formed in the housing 10, and the excitation source 20 is disposed in the first opening to block the first opening; the impact member 30 is disposed below the excitation source 20, and the clamping structure 40 is disposed below the impact member 30, and the first conductor 51 and the second conductor 52 are clamped on the clamping structure 40; the first conductor 51 is connected between the live wire of the power supply and the live wire of the electrical appliance of the electronic circuit, and the second conductor 52 is connected between the neutral wire of the power supply and the neutral wire of the electrical appliance of the electronic circuit; when abnormal current is generated on the first conductor 51 and the second conductor 52, the excitation source 20 is triggered and provides an impact force to the impact member 30, so that the impact member 30 impacts the clamping structure 40, and after the clamping structure 40 receives the impact force, it breaks the first conductor 51 and the second conductor 52 to cut off the power supply of the electronic circuit. In this way, the excitation breaker is connected between the electronic circuit and the power supply. When an abnormal circuit occurs in the circuit, the excitation source in the excitation breaker is triggered, and the impact member is quickly pushed to impact the clamping structure, so that after the clamping structure receives the impact force, it quickly breaks the first conductor and the second conductor to cut off the power supply of the electronic circuit, improving the cutting speed of the power supply. At the same time, when the first conductor and the second conductor are broken, the acting forces such as external vibration and impact on the first conductor and the second conductor are reduced, and after the first conductor and the second conductor are disconnected, it can ensure their balanced and accelerated descent and avoid flipping.

[0047] Embodiment 1

[0048] In a possible embodiment, please also refer to Figure 4 , a first lateral center of the first conductor 51 is concaved to form a first groove 511, a second lateral middle of the first conductor 51 is concaved to form a second groove 512, and a first pre-fracture portion 513 is formed between the first groove 511 and the second groove 512; a first lateral center of the second conductor 52 is concaved to form a third groove 522, a second lateral middle of the second conductor 52 is concaved to form a fourth groove 521, and a second pre-fracture portion 523 is formed between the third groove 522 and the fourth groove 521; the first sub-clamping member 41 and the third sub-clamping member 44 are clamped on the first pre-fracture portion 513 by combining with the first groove 511 and the second groove 512, and the second sub-clamping member 42 and the fourth sub-clamping member 45 are clamped on the second pre-fracture portion 523 by combining with the third groove 522 and the fourth groove 521.

[0049] In specific implementation, the first conductor 51 is provided with the first groove 511 and the second groove 512. The opening directions of the first groove 511 and the second groove 512 are opposite. The first groove 511 and the second groove 512 can not only provide a clamping space for the clamping structure 40, but also limit the clamping structure 40; in addition, a groove wall of the first groove 511 extends towards the opening direction of the first groove 511 to be combined with the housing 10, so that the conductor can be fixed in the housing 10.

[0050] The second conductor 52 is provided with the third groove 522 and the fourth groove 521. The opening directions of the third groove 522 and the fourth groove 521 are opposite. The third groove 522 and the fourth groove 521 can not only provide a clamping space for the clamping structure 40, but also limit the clamping structure 40; in addition, a groove wall of the third groove 522 extends towards the opening direction of the third groove 522 to be combined with the housing 10, so that the conductor can be fixed in the housing 10.

[0051] In a possible embodiment, please also refer to Figure 2 , Figure 6 or Figure 8 , the excitation interrupter further includes a sealed cavity 60 and at least one fuse 80. At least one arc extinguishing chamber (for example, Figure 2 , Figure 6 or Figure 8 in the first arc extinguishing chamber 61 and the second arc extinguishing chamber 62) is arranged in the sealed cavity 60; the at least one fuse 80 (for example, Figure 2 , Figure 6 or Figure 8The first melt 81 and the second melt 82) pass through the at least one arc extinguishing chamber one by one, and both ends of each melt are respectively connected to the first conductor 51 and the second conductor 52. Wherein, each arc extinguishing chamber is filled with an arc extinguishing medium 70.

[0052] In specific implementation, please refer to Figure 2 、 Figure 5 、 Figure 6 and Figure 8 together. In the excitation breaker, at least one melt 80 and at least one arc extinguishing chamber are added. In this embodiment, according to the number of conductors (i.e., the first conductor 51 and the second conductor 52), two melts (denoted as the first melt 81 and the second melt 82) and two arc extinguishing chambers (denoted as the first arc extinguishing chamber 61 and the second arc extinguishing chamber 62) are provided. Both ends of the first melt are respectively connected to both ends of the first pre-fracture part 513, and both ends of the second melt are respectively connected to both ends of the second pre-fracture part 523; meanwhile, the first melt passes through the first arc extinguishing chamber, and the second melt passes through the second arc extinguishing chamber. Thus, when the first pre-fracture part 513 and the second pre-fracture part 523 are pulled and broken by the clamping structure 40, the current on the first conductor 51 is transferred to the first melt, and then the first melt and the second melt are melted. Wherein, a first arc extinguishing medium 71 is provided in the first arc extinguishing chamber, and a second arc extinguishing medium 72 is provided in the second arc extinguishing chamber; when the first melt is melted, the first arc extinguishing medium 71 extinguishes the arc generated after the first melt is melted, and the second arc extinguishing medium 72 extinguishes the arc generated after the second melt is melted. Wherein, the first melt and the second melt are designed in a square wave shape bent up and down (as shown in Figure 5 ), so as to maximize the length of the arc extinguishing melt and improve the safe breaking ability of the product.

[0053] Furthermore, a sixth opening is formed between the second groove 512 and the fourth groove 521, through which the sealing cavity 60 can pass. When the clamping structure 40 pulls and breaks the first pre-fracture part 513 and the second pre-fracture part 523, when the clamping structure 40 rushes along the sliding cavity 90 towards the bottom of the sliding cavity 90, it can be sleeved on the sealing cavity 60 to prevent the clamping structure 40 from damaging the sealing cavity 60.

[0054] Specifically, the impact member 30 and the clamping structure 40 are sequentially arranged at one end of the sliding cavity 90, and the sealing cavity 60 is arranged at the bottom of the second end of the sliding cavity 90; a ninth groove 401 is formed between the third sub-clamping member 44 and the fourth sub-clamping member 45; when the clamping structure 40 slides from the first end of the sliding cavity 90 to the second end of the sliding cavity 90, the sealing cavity 60 is embedded in the ninth groove 401. In this way, the space within the stroke range of the sliding cavity 90 is fully utilized to arrange the sealing cavity 60 and the clamping structure 40, reducing the volume of the excitation breaker.

[0055] In a possible embodiment, please refer to Figures 1 - 3 , the clamping structure 40 includes a first clamping member, a first sub-clamping member 41 and a second sub-clamping member 42; a first clamping portion is provided on the first sub-clamping member 41, and a second clamping portion is provided on the second sub-clamping member 42; the first clamping member includes a first substrate 43, a third sub-clamping member 44 extends from the first end of the first end face of the first substrate 43 in a direction away from the first end face, and a fourth sub-clamping member 45 extends from the second end of the first end face of the first substrate 43 in a direction away from the first end face; a third clamping portion 411 is provided at the end of the third sub-clamping member 44 away from the first end face, and a fourth clamping portion 421 is provided at the end of the fourth sub-clamping member 45 away from the first end face; the first clamping portion and the third clamping portion 411 are combined to form a first cavity for clamping the first conductor 51 in the first cavity; the second clamping portion and the fourth clamping portion 421 are combined to form a second cavity for clamping the second conductor 52 in the second cavity.

[0056] In specific implementation, the first clamping member and the second clamping member are respectively manufactured, and the clamping structure 40 is formed by combining the first clamping member and the second clamping member, so as to clamp the first conductor 51 and the second conductor 52 through the combination of the first clamping member and the second clamping member. In order to break the first conductor 51 and the second conductor 52 simultaneously, in this embodiment, a third sub-clamping member 44 and a fourth sub-clamping member 45 are extended on the first clamping member. A third clamping portion 411 is provided at one end of the third sub-clamping member 44 away from the first substrate 43, and the third clamping portion 411 may be a groove; at the same time, a fourth clamping portion 421 is provided at one end of the fourth sub-clamping member 45 away from the first substrate 43, and the fourth clamping portion 421 may be a groove; at the same time, a first clamping portion is provided on the first sub-clamping member 41, and a second clamping portion is provided on the second sub-clamping member 42, wherein the first clamping portion and the second clamping portion may also be grooves.

[0057] The combination of the two grooves of the first clamping portion and the third clamping portion 411 can form a first cavity, and the first cavity is a through cavity, so as to clamp the first pre-fracture portion 513 in the first cavity; the combination of the two grooves of the second clamping portion and the fourth clamping portion 421 can form a second cavity, and the second cavity is a through cavity, so as to clamp the second pre-fracture portion 523 in the second cavity.

[0058] Furthermore, the first clamping portion and the third clamping portion 411, and the second clamping portion and the fourth clamping portion 421 can be connected by means including but not limited to snap fasteners, mortise and tenon structures, screws, glue, etc.

[0059] In this embodiment, the acting force of external vibration impact on the pre-fracture part can be reduced before the pre-fracture part breaks, and after the pre-fracture part breaks, it can ensure its balanced accelerated descent and avoid flipping; in addition, when an electric arc is generated when the pre-fracture part breaks, the electric arc will ablate the surface of the clamping structure 40, and the common materials of the clamping structure 40 are PA66, PA66 / PA6T, PPS, etc., which can generate arc-extinguishing gas under the action of the electric arc, play the role of extinguishing the electric arc, and wrapping the pre-fracture part can also increase the creepage distance of the conductor disconnection gap and improve the insulation strength after the product operates.

[0060] Embodiment 2

[0061] In a possible embodiment, please refer to Figure 1 、 Figure 2 and Figure 9 together. The first lateral center of the first conductor 51 is concavely formed with a first groove 511, and the second lateral middle of the first conductor 51 is concavely formed with a second groove 512. A first pre-fracture part 513 is formed between the first groove 511 and the second groove 512; the first lateral center of the second conductor 52 is concavely formed with a third groove 522, and the second lateral middle of the second conductor 52 is concavely formed with a fourth groove 521. A second pre-fracture part 523 is formed between the third groove 522 and the fourth groove 521; the first sub-clamping part 41 and the third sub-clamping part 44 are clamped on the first pre-fracture part 513 by combining with the first groove 511 and the second groove 512, and the second sub-clamping part 42 and the fourth sub-clamping part 45 are clamped on the second pre-fracture part 523 by combining with the third groove 522 and the fourth groove 521.

[0062] Specifically, the clamping structure 40 includes a first sub-clamping part 41, a second sub-clamping part 42, a third sub-clamping part 44 and a fourth sub-clamping part 45; the first sub-clamping part 41 and the second sub-clamping part 42 are arranged below the impact part 30; a first clamping part is arranged on the first sub-clamping part 41, and a second clamping part is arranged on the second sub-clamping part 42; a third clamping part 411 is arranged at the first end of the third sub-clamping part 44, and a fourth clamping part 421 is arranged at the first end of the fourth sub-clamping part 45; the first clamping part and the third clamping part 411 are combined to form a first cavity to clamp the first conductor 51 in the first cavity; the second clamping part and the fourth clamping part 421 are combined to form a second cavity to clamp the second conductor 52 in the second cavity.

[0063] In a specific implementation, compared with the first embodiment, the first substrate 43 on the first clamping member is removed in this embodiment, and only the third sub-clamping member 44 and the fourth sub-clamping member 45 are retained, that is, two separate clamping members are obtained. The third sub-clamping member 44 and the fourth sub-clamping member 45 are directly arranged below the impact member 30. The third sub-clamping member 44 is also provided with a third clamping portion 411 at one end facing away from the impact member 30 and close to the first conductor 51, and the fourth sub-clamping member 45 is also provided with a fourth clamping portion 421 at one end facing away from the impact member 30 and close to the second conductor 52. Moreover, the third sub-clamping member 44 is combined with the first clamping portion of the first sub-clamping member 41 through the third clamping portion 411 to form a first cavity for clamping the first pre-fracture portion 513. The fourth sub-clamping member 45 is combined with the second clamping portion of the second sub-clamping member 42 through the fourth clamping portion 421 to form a second cavity for clamping the second pre-fracture portion 523. In this way, when the impact member 30 is pushed by high-pressure gas, it can directly impact the third sub-clamping member 44 and the fourth sub-clamping member 45, so that the first sub-clamping portion and the second sub-clamping portion can respectively break the first pre-fracture portion 513 and the second pre-fracture portion 523, and further break the first conductor 51 and the second conductor 52 to cut off the current on the first conductor 51 and the second conductor 52.

[0064] It can be seen that in this embodiment, the separate third sub-clamping member 44 and fourth sub-clamping member 45 reduce the acting force of external vibration and impact on the pre-fracture portion before the pre-fracture portion breaks, and can ensure its balanced and accelerated descent and avoid flipping after the pre-fracture portion breaks. In addition, when an arc is generated when the pre-fracture portion breaks, the arc will ablate the surface of the clamping structure 40. The common materials of the clamping structure 40 are PA66, PA66 / PA6T, PPS, etc., which can generate arc extinguishing gas under the action of the arc to play the role of extinguishing the arc. Wrapping the pre-fracture portion can also increase the creepage distance of the conductor disconnection gap and improve the insulation strength of the product after operation.

[0065] Embodiment Three

[0066] In a possible embodiment, please refer to Figure 1 、 Figure 2 and Figure 10, the clamping structure 40 includes a first clamping member, the first clamping member includes a first substrate 43, a third sub-clamping member 44 extends from the first end of the first end face of the first substrate 43 in a direction away from the first end face, and a fourth sub-clamping member 45 extends from the second end of the first end face of the first substrate 43 in a direction away from the first end face; a third clamping portion 411 is provided at the end of the third sub-clamping member 44 away from the first end face, and a fourth clamping portion 421 is provided at the end of the fourth sub-clamping member 45 away from the first end face; a fifth groove with an opening facing the vertical gravity direction and facing the fourth clamping portion 421 is provided on the third clamping portion 411, and a sixth groove with an opening facing the vertical gravity direction and facing the third clamping portion 411 is provided on the fourth clamping portion 421; the fifth groove is used to clamp the first conductor 51, and the sixth groove is used to clamp the second conductor 52.

[0067] Specifically, a seventh groove is formed by inwardly concave the first lateral center of the first conductor 51 to form a first pre-fracture portion 513; an eighth groove is formed by inwardly concave the second lateral center of the second conductor 52 to form a second pre-fracture portion 523; the third clamping portion 411 is combined with the seventh groove through the fifth groove to be clamped on the first pre-fracture portion 513; the fourth clamping portion 421 is combined with the eighth groove through the sixth groove to be clamped on the second pre-fracture portion 523.

[0068] In a specific implementation, compared with the first embodiment and the second embodiment, the first sub-clamping member 41 and the second sub-clamping member 42 are removed in this embodiment, and only the first clamping member is retained. At the same time, the third clamping portion 411 of the third sub-clamping member 44 and the fourth clamping portion 421 of the fourth sub-clamping member 45 in the first clamping member are improved.

[0069] Specifically, the third clamping portion 411 is provided to include a fifth groove, and the opening direction of the fifth groove is the vertical gravity direction and faces the fourth sub-clamping member 45, so that the first pre-fracture portion 513 can be clamped only by the combination of the fifth groove and the first groove 511. Similarly, the fourth clamping portion 421 is provided to include a sixth groove, and the opening direction of the sixth groove is the vertical gravity direction and faces the third sub-clamping portion, so that the second pre-fracture portion 523 can be clamped only by the engagement of the sixth groove and the second groove 512.

[0070] It can be seen that in this embodiment, by setting the third clamping portion 411 and the fourth clamping portion 421 of the first clamping member as an integral clamping structure to clamp the first pre-fracture portion 513 and the second pre-fracture portion 523, the force of external vibration impact on the pre-fracture portion is reduced before the pre-fracture portion breaks, and after the pre-fracture portion breaks, it can ensure its balanced and accelerated descent and avoid flipping; in addition, when an arc is generated when the pre-fracture portion breaks, the arc will ablate the surface of the clamping structure 40, and the common materials of the clamping structure 40 are PA66, PA66 / PA6T, PPS, etc., which can generate arc extinguishing gas under the action of the arc, play a role in extinguishing the arc, and wrapping the pre-fracture portion can also increase the creepage distance of the conductor disconnection gap and improve the insulation strength of the product after operation.

[0071] In a possible embodiment, please continue to refer to Figure 4 , the first conductor 51 and the second conductor 52 are sheet-shaped, that is, the lengths of the first conductor 51 and the second conductor 52 in the fourth direction and the fifth direction are both greater than the length of the first conductor 51 in the third direction. Setting the first conductor 51 and the second conductor 52 as sheet-shaped makes the contact area between the first conductor 51 and the second conductor 52 and the housing 10 larger, and thus it is not easy to displace. In addition, it is easier to set pre-fracture portions on the first conductor 51 and the second conductor 52.

[0072] It can be understood that the third direction, the fourth direction, and the fifth direction described in this application are as follows: the fifth direction is the direction from the first end to the second end of the first conductor 51, or the direction from the second end to the first end of the first conductor 51, where the direction from the first end to the second end is positive and the direction from the second end to the first end is negative; the fourth direction can be the opening direction of the first groove or the second groove, where the opening direction of the second groove 512 is positive and the opening direction of the first groove 511 is negative; the third direction is the stroke direction of the impact member 30. Specifically, the impact direction of the impact member 30 is negative, and vice versa is positive. It can be understood that here only specific components are used as references to explain each direction, and there can be other references for each direction, which will not be elaborated here. In addition, the positive and negative of each direction are only for example and not limited.

[0073] In a possible embodiment, please continue to refer to Figure 4 , the opposite corner ends between the first conductor 51 and the second conductor 52 (i.e., the corner ends in the opening directions of the second groove 512 and the third groove 522 respectively) are rounded corners. Such a setting can avoid the mutual collision between the corner ends of the first conductor 51 and the second conductor 52; at the same time, it can provide a direction mark, making it easier to distinguish the relative positions of the first conductor 51 and the second conductor 52 during production.

[0074] In a possible embodiment, please continue to refer toFigure 4 On the first pre-fracture part 513, there are also a tenth groove 5131, an eleventh groove 5132, a twelfth groove 5133 and a thirteenth groove 5134. The tenth groove 5131 and the eleventh groove 5132 are arranged on the first end face of the first pre-fracture part 513, and the twelfth groove 5133 and the thirteenth groove 5134 are arranged on the second end face of the first pre-fracture part 513. Among them, the first end face and the second end face of the first pre-fracture part 513 are two opposite faces on the first pre-fracture part 513. On the second pre-fracture part 523, there are also a fourteenth groove 5231, a fifteenth groove 5232, a sixteenth groove 5233 and a seventeenth groove 5234. The fourteenth groove 5231 and the fifteenth groove 5232 are arranged on the first end face of the second pre-fracture part 523, and the sixteenth groove 5233 and the seventeenth groove 5234 are arranged on the second end face of the second pre-fracture part 523. Among them, the first end face and the second end face of the second pre-fracture part 523 are two opposite faces on the second pre-fracture part 523.

[0075] In a possible embodiment, please continue to refer to Figure 4 On the first sub-holder 41, there is a fifth holding part, and on the fifth holding part, there is a first holding end and a second holding end adapted to the tenth groove 5131 and the eleventh groove 5132. On the second sub-holder 42, there is a sixth holding part, and on the sixth holding part, there is a third holding end and a fourth holding end adapted to the fourteenth groove 5231 and the fifteenth groove 5232. On the third sub-holder 44, there is a seventh holding part, and on the seventh holding part, there is a fifth holding end and a sixth holding end adapted to the twelfth groove 5133 and the thirteenth groove 5134. On the fourth sub-holder 45, there is an eighth holding part, and on the eighth holding part, there is a seventh holding end and an eighth holding end adapted to the sixteenth groove 5233 and the seventeenth groove 5234.

[0076] In specific implementation, when the first holding part and the third holding part 411 are combined to hold the first pre-fracture part 513, the first holding end and the second holding end are respectively combined with the tenth groove 5131 and the eleventh groove 5132, so that the first holding end and the second holding end hold the weak part on the first end face of the first pre-fracture part 513; at the same time, the fifth holding end and the sixth holding end are respectively combined with the twelfth groove 5133 and the thirteenth groove 5134, so that the fifth holding end and the sixth holding end hold the weak part on the second end face of the first pre-fracture part 513.

[0077] When the second clamping portion and the fourth clamping portion 421 combine to clamp the first pre-breaking portion 513, the first clamping end and the second clamping end are respectively combined with the tenth groove 5131 and the eleventh groove 5132, so that the first clamping end and the second clamping end are clamped at the weak point of the first end face of the first pre-breaking portion 513; at the same time, the fifth clamping end and the sixth clamping end are respectively combined with the twelfth groove 5133 and the thirteenth groove 5134, so that the fifth clamping end and the sixth clamping end are clamped at the weak point of the second end face of the first pre-breaking portion 513.

[0078] It can be seen that in the embodiment, weak points are respectively provided on the first pre-breaking portion 513 and the second pre-breaking portion 523, and on the basis of the first clamping portion and the second clamping portion, the weak points of the first pre-breaking portion 513 and the second pre-breaking portion 523 are clamped for the second time, so that after the clamping structure 40 is subjected to an impact force, it is easier to pull the first pre-breaking portion 513 and the second pre-breaking portion 523 apart, and the breaking point is more accurate.

[0079] In one possible embodiment, please refer to Figure 1 , Figure 2 and Figure 7 A second buffer space is arranged between the impact member 30 and the clamping structure 40 .

[0080] For further information, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 The side of the impact member 30 close to the excitation source 20 is concave toward the side away from the excitation source 20 to form a first buffer space, and the first buffer space is used to provide buffering when the excitation source 20 is triggered to release high-pressure gas.

[0081] In a specific implementation, this embodiment sets a buffer space between the air port and the impact member 30 to protect the excitation interrupter. Specifically, setting the first buffer space and the second buffer space can reduce mechanical shock. When the impact member 30 has a large kinetic energy during movement, if there is no buffer space, when the impact member 30 reaches the end of the stroke, it will directly hit the cylinder head or other components, generating a large impact force, which can easily cause damage to the impact member 30, the cylinder body, the seal and other components, and reduce the service life of the equipment. After the buffer space is set, when the impact member 30 approaches the end of the stroke, the gas in the buffer space is compressed, forming a resistance, so that the speed of the impact member 30 gradually decreases, thereby reducing the impact on the cylinder head and other components.

[0082] Furthermore, setting the first buffer space and the second buffer space can also improve the motion accuracy and stability, and achieve precise positioning. In some devices with high requirements for position accuracy, such as pneumatic fixtures on automated production lines and pneumatic worktables on CNC machine tools, the buffer space helps the impact member 30 to stop more accurately when it reaches the specified position, avoiding position deviations caused by inertia or impact, thereby improving the motion accuracy and positioning accuracy of the device.

[0083] Setting the first buffer space and the second buffer space can also enable the impact member 30 to operate smoothly. During the movement of the impact member 30, it may be affected by various factors, such as fluctuations in air flow and changes in load, resulting in unstable movement speed. The buffer space can absorb the effects of these fluctuations and changes to a certain extent, making the movement of the impact member 30 smoother and ensuring the normal operation of the device.

[0084] In a possible embodiment, please continue to refer to Figure 8 , the clamping structure 40 abuts against the lower part of the impact member 30. This can prevent the clamping structure 40 from being bounced up, or even displaced or detached from the first conductor 51 and / or the second conductor 52 under harsh working conditions such as strong vibrations during product use. In this case, the impact member 30 and the clamping structure 40 can also be made into an integral body. When the excitation source is triggered to generate high-pressure gas, the high-pressure gas pushes the impact member 30 and the clamping structure 40 to move along the sliding cavity simultaneously to cut the first pre-fracture part and the second pre-fracture part in the first conductor and the second conductor.

[0085] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions without departing from the spirit and scope of the present invention, and can make various modifications and alterations, including combinations of the above different functions and implementation steps, including software and hardware implementation methods, all within the protection scope of the present invention.

Claims

1. An excitation interrupter, characterized in that, Applied to an electronic circuit; the excitation interrupter includes a housing, an excitation source, an impact member, a clamping structure, a first conductor, a second conductor, and a sealed cavity. A first opening is formed in the housing, and the excitation source is disposed at the first opening to block the first opening; An impact member is disposed below the excitation source, and a clamping structure is disposed below the impact member. The first conductor and the second conductor are clamped by the clamping structure; When abnormal current occurs on the first conductor and the second conductor, the excitation source is triggered and provides an impact force to the impact member, so that the impact member impacts the clamping structure. After the clamping structure receives the impact force, it breaks the first conductor and the second conductor to cut off the power supply of the electronic circuit; The clamping structure includes a third sub-clamping member and a fourth sub-clamping member; a third clamping portion is provided at an end of the third sub-clamping member, and a fourth clamping portion is provided at an end of the fourth sub-clamping member; The housing includes a sliding cavity which is communicated with the first opening. The impact member and the clamping structure are sequentially disposed at one end of the sliding cavity, and the sealed cavity is disposed at the bottom of the second end of the sliding cavity; A ninth groove is formed between the third sub-clamping member and the fourth sub-clamping member; When the clamping structure slides from the first end of the sliding cavity to the second end of the sliding cavity, the sealed cavity is embedded into the ninth groove.

2. The excitation interrupter according to claim 1, characterized in that, The clamping structure includes a first clamping member, a first sub-clamping member, and a second sub-clamping member; A first clamping portion is provided on the first sub-clamping member, and a second clamping portion is provided on the second sub-clamping member; The first clamping member includes a first substrate. A third sub-clamping member extends from the first end of the first end face of the first substrate in a direction away from the first end face, and a fourth sub-clamping member extends from the second end of the first end face of the first substrate in a direction away from the first end face; a third clamping portion is provided at an end of the third sub-clamping member that is away from the first end face, and a fourth clamping portion is provided at an end of the fourth sub-clamping member that is away from the first end face; The first clamping portion and the third clamping portion are combined to form a first cavity to clamp the first conductor in the first cavity; The second clamping portion and the fourth clamping portion are combined to form a second cavity to clamp the second conductor in the second cavity.

3. The incentive interrupter according to claim 1, characterized in that, The clamping structure includes a first sub-clamping member, a second sub-clamping member, a third sub-clamping member, and a fourth sub-clamping member; the first sub-clamping member and the second sub-clamping member are disposed below the impact member; A first clamping portion is provided on the first sub-clamping member, and a second clamping portion is provided on the second sub-clamping member; A third clamping portion is provided at a first end of the third sub-clamping member, and a fourth clamping portion is provided at a first end of the fourth sub-clamping member; The first clamping portion and the third clamping portion are combined to form a first cavity to clamp the first conductor in the first cavity; The second clamping portion and the fourth clamping portion are combined to form a second cavity to clamp the second conductor in the second cavity.

4. The excitation interrupter according to claim 2 or 3, characterized in that, The first lateral center of the first conductor is concaved inward to form a first groove, the second lateral middle of the first conductor is concaved inward to form a second groove, and a first pre-fracture portion is formed between the first groove and the second groove; The first lateral center of the second conductor is concaved inward to form a third groove, the second lateral middle of the second conductor is concaved inward to form a fourth groove, and a second pre-fracture portion is formed between the third groove and the fourth groove; The first sub-clamping member and the third sub-clamping member are clamped on the first pre-fracture portion by combining with the first groove and the second groove, and the second sub-clamping member and the fourth sub-clamping member are clamped on the second pre-fracture portion by combining with the third groove and the fourth groove.

5. The excitation interrupter according to claim 1, characterized in that, The clamping structure includes a first clamping member, The first clamping member includes a first substrate. A third sub-clamping member extends from the first end of the first end face of the first substrate in a direction away from the first end face, and a fourth sub-clamping member extends from the second end of the first end face of the first substrate in a direction away from the first end face; a third clamping portion is provided at the end of the third sub-clamping member away from the first end face, and a fourth clamping portion is provided at the end of the fourth sub-clamping member away from the first end face; A fifth groove with an opening facing the direction perpendicular to the gravity direction and facing the fourth clamping portion is provided on the third clamping portion, and a sixth groove with an opening facing the direction perpendicular to the gravity direction and facing the third clamping portion is provided on the fourth clamping portion; The fifth groove is used for clamping the first conductor, and the sixth groove is used for clamping the second conductor.

6. The excitation interrupter according to claim 5, characterized in that, The first lateral center of the first conductor is concaved inward to form a seventh groove to form a first pre-fracture portion; the second lateral center of the second conductor is concaved inward to form an eighth groove to form a second pre-fracture portion; The third clamping portion is combined with the seventh groove through the fifth groove to be clamped on the first pre-fracture portion; the fourth clamping portion is combined with the eighth groove through the sixth groove to be clamped on the second pre-fracture portion.

7. The excitation interrupter according to claim 1, characterized in that, The side of the impact member close to the excitation source is concaved inward toward the side away from the excitation source to form a first buffer space, and the first buffer space is used to provide buffering when the excitation source is triggered to release high-pressure gas.

8. The incentive interrupter according to any one of claims 2, 3, 5, and 6, characterized in that, At least one arc extinguishing chamber is provided in the sealed cavity; the at least one melt passes through the at least one arc extinguishing chamber one by one, and both ends of each melt are respectively connected to the first conductor and the second conductor.

9. The excitation interrupter according to any one of claims 1-3, characterized in that, A second buffer space is provided at an interval between the impact member and the clamping structure; or, The clamping structure abuts against the lower part of the impact member.

Images