Integrated circuit protector with non-break protection interval

Abstract

An integrated circuit protector with a non-cut-off protection interval is characterized in that the integrated circuit protector comprises an arc extinguishing chamber, a contact system chamber and a fusing chamber, the arc extinguishing chamber and the fusing chamber are arranged on the two sides of the contact system chamber side by side in the horizontal direction respectively, at least one arc extinguishing chamber is arranged in the arc extinguishing chamber, and the fusing chamber is arranged in the arc extinguishing chamber. At least a contact system is arranged in the contact system chamber, and at least a fuse is arranged in the fusing chamber. And the low-power instantaneous function of the circuit breaker and the high-power instantaneous function of the fuse are integrated in the whole protector, so that the integrated circuit protector without a cut-off protection interval is formed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of circuit protection, and specifically relates to an integrated circuit protector with a no-gap protection interval. BACKGROUND

[0002] A fuse is an electrical device that automatically opens a circuit when the current exceeds a specified value. Fuses have strong breaking capacity (some specifications of fuses can reach 200KA), strong current limiting capacity, and low allowed energy. However, fuses need to be replaced with new fuses after melting to work normally. A circuit breaker is a switching device that can close, carry, and open a circuit under normal conditions and can close, carry, and open a current under abnormal conditions within a specified time. Circuit breakers generally do not need to be replaced after breaking a fault current. However, it has weak breaking capacity, long breaking time, and weak current limiting capacity.

[0003] Traditional power distribution sites use a combination of circuit breakers and fuses to protect the entire system. However, the overload protection capacity of the circuit breaker in this traditional combination is about 1.5-2 times the rated current, while the fuse will be instantaneous at 6-8 times the rated current. This results in a 2-6 times rated current interval without protection, and there is a gap interval between circuit breaker protection and fuse protection.

[0004] Chinese patent 202211675319.5 discloses a protector integrating a fuse and a circuit breaker module. The circuit breaker housing is formed with a pair of connecting seats on the end surface close to the fuse housing. The fuse housing is formed with a pair of connecting slots for horizontal insertion of the connecting seats on the end surface close to the circuit breaker. A pair of connecting screws are vertically provided on the fuse housing. The connecting screws are screwed onto the connecting seats inserted into the corresponding connecting slots. The circuit breaker housing extends downward from the end surface close to the fuse housing. The fuse housing is formed with a contact slot for horizontal insertion of the circuit breaker plug-in contact at the lower end close to the circuit breaker. The internal lower end of the fuse housing is provided with a strip-shaped contact. The strip-shaped contact is provided with an integrated connecting screw. The strip-shaped contact and the circuit breaker plug-in contact are connected by the integrated connecting screw. This protector can integrate the fuse and the circuit breaker, but it still cannot protect the circuit in the 2-6 times rated current interval. SUMMARY

[0005] The integrated circuit protector with no-break protection interval is formed by integrating the low-multiple instantaneous function of the circuit breaker and the high-multiple instantaneous function of the fuse in the whole protector.

[0006] Technical scheme

[0007] In order to achieve the above technical purpose, the integrated circuit protector with no-break protection interval provided by the present application is characterized in that it comprises an arc-extinguishing chamber, a contact system chamber and a fuse chamber, the arc-extinguishing chamber and the fuse chamber are arranged side by side along the horizontal direction at the two sides of the contact system chamber respectively, at least one arc-extinguishing chamber is arranged in the arc-extinguishing chamber, at least one contact system is arranged in the contact system chamber, and at least one fuse is arranged in the fuse chamber.

[0008] In one embodiment, at least one fuse is placed in the fuse chamber.

[0009] In one embodiment, the at least one fuse is connected in series, and the two ends of the at least one fuse connected in series are respectively provided with a conductive element one and a conductive element two, wherein the conductive element one at the end opposite to the contact system chamber is electrically connected with the contact system arranged in the contact system chamber, and the conductive element two at the other end is an external wiring terminal.

[0010] In one embodiment, a trip device is further arranged in the contact system chamber, the trip device is arranged on the conductive element one electrically connected with the at least one fuse, and the trip device is caused to generate an attraction action by the magnetic field generated by the large current passing through the conductive element one, and then the trip device is caused to trip the mechanism assembly in the contact system chamber, so as to disconnect the conductive loop.

[0011] In one embodiment, one end of the conductive element one is connected with one end of the at least one fuse connected in series, and the other end is connected with the movable contact in the contact system chamber.

[0012] In one embodiment, a trip device is further arranged in the contact system chamber, the trip device comprises a magnetic tripping device, when the current is greater than a first preset value, the magnetic tripping device can cause the integrated circuit protector to trip, and the first preset value is less than or equal to 2 times the rated current value.

[0013] In one embodiment, when the current is greater than a second preset value, the fuse can generate an action, and the second preset value is less than or equal to 8 times the rated current value and greater than the first preset value.

[0014] In one of the embodiments, a tripping device is further arranged in the contact system chamber, and the tripping device comprises a thermal tripping device which can trip the integrated circuit protector when the current is greater than a third preset value, and the third preset value is less than the first preset value and greater than the rated current value.

[0015] In one of the embodiments, the at least one fuse is arranged in a chamber space independent of each other in the fuse chamber.

[0016] In one of the embodiments, the chamber space independent of each other in the fuse chamber is formed by a rib of the housing space where the fuse chamber is arranged.

[0017] Advantages

[0018] The integrated circuit protector with no-break protection interval provided by the present application comprises an arc extinguishing chamber, a contact system chamber and a fuse chamber, the arc extinguishing chamber and the fuse chamber are arranged side by side along the horizontal direction on both sides of the contact system chamber, at least one arc extinguishing chamber is arranged in the arc extinguishing chamber, at least one contact system is arranged in the contact system chamber, and at least one fuse is arranged in the fuse chamber. The low-multiple instantaneous function of the circuit breaker and the high-multiple instantaneous function of the fuse are integrated in the whole protector to form the integrated circuit protector with no-break protection interval. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] FIG. 1 is a schematic diagram of a circuit protector in an embodiment of the present application; Figure 1

[0021] FIG. 2 is a layout schematic diagram of a circuit protector in an embodiment of the present application; Figure 2 FIG. 3 is a top view of a circuit protector in an embodiment of the present application;

[0022] Figure 3 FIG. 4 is a structural schematic diagram of a circuit protector in an embodiment of the present application;

[0023] FIG. 5 is a structural schematic diagram of a mechanism assembly in a circuit protector in an embodiment of the present application; Figure 4

[0024] Figure 5 DETAILED DESCRIPTION

[0025] ​​​​​In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely explain the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should fall into the scope of the present application.

[0026] It should be noted that when a component is referred to as being "on" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only orientation of the embodiments.

[0027] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be interpreted as indicating or implying relative importance or a specific number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature to the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by a person skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0030] Embodiments

[0031] The traditional power distribution site adopts the combination of circuit breaker + fuse to protect the whole system, but the overload protection capacity of the circuit breaker in the traditional combination is about 1.5-2 times the rated current, and the fuse will be instantaneous at 6-8 times the rated current. This leads to a gap between the circuit breaker protection and the fuse protection in the 2-6 times rated current interval. In order to solve this problem, as shown in the embodiments of the present application, an integrated circuit protector with no gap protection interval is provided, which comprises an arc extinguishing chamber a, a contact system chamber b and a fuse chamber c. The arc extinguishing chamber a and the fuse chamber c are arranged side by side along the horizontal direction on both sides of the contact system chamber b, at least one arc extinguishing chamber 1 is arranged in the arc extinguishing chamber a, at least one contact system 2 is arranged in the contact system chamber b, and at least one fuse 3 is arranged in the fuse chamber c. Figure 1 and 2 The integrated circuit protector with no gap protection interval comprises an arc extinguishing chamber a, a contact system chamber b and a fuse chamber c. The arc extinguishing chamber a and the fuse chamber c are arranged side by side along the horizontal direction on both sides of the contact system chamber b. At least one arc extinguishing chamber 1 is arranged in the arc extinguishing chamber a. At least one contact system 2 is arranged in the contact system chamber b. At least one fuse 3 is arranged in the fuse chamber c.

[0032] Specifically, at least one fuse 3 is placed in the fuse chamber c. In the present embodiment, the at least one fuse 3 is arranged in the independent chamber space c0 in the fuse chamber c respectively. As shown in the embodiments of the present application, 3 and 4, the independent chamber space c0 in the fuse chamber c is formed by the rib 801 of the space of the shell 8 where the fuse chamber c is located. The at least one fuse 3 is connected in series. The two ends of the at least one fuse 3 connected in series are respectively provided with a conductive element one 4 and a conductive element two 5. The conductive element one 4 at the end opposite to the contact system chamber b is electrically connected with the contact system 2 arranged in the contact system chamber b. The other end of the conductive element two 5 is an external wiring end. One end of the conductive element one 4 is connected with one end of the at least one fuse 3 connected in series. The other end is soft connected with the movable contact 201 in the contact system chamber b. Figure 2 As shown in the embodiments of the present application, 3 and 4, the independent chamber space c0 in the fuse chamber c is formed by the rib 801 of the space of the shell 8 where the fuse chamber c is located. The at least one fuse 3 is connected in series. The two ends of the at least one fuse 3 connected in series are respectively provided with a conductive element one 4 and a conductive element two 5. The conductive element one 4 at the end opposite to the contact system chamber b is electrically connected with the contact system 2 arranged in the contact system chamber b. The other end of the conductive element two 5 is an external wiring end. One end of the conductive element one 4 is connected with one end of the at least one fuse 3 connected in series. The other end is soft connected with the movable contact 201 in the contact system chamber b.

[0033] Figure 5 As shown in the embodiments of the present application, 3 and 4, the independent chamber space c0 in the fuse chamber c is formed by the rib 801 of the space of the shell 8 where the fuse chamber c is located. The at least one fuse 3 is connected in series. The two ends of the at least one fuse 3 connected in series are respectively provided with a conductive element one 4 and a conductive element two 5. The conductive element one 4 at the end opposite to the contact system chamber b is electrically connected with the contact system 2 arranged in the contact system chamber b. The other end of the conductive element two 5 is an external wiring end. One end of the conductive element one 4 is connected with one end of the at least one fuse 3 connected in series. The other end is soft connected with the movable contact 201 in the contact system chamber b.

[0034] As shown in the embodiments of the present application, 3 and 4, the independent chamber space c0 in the fuse chamber c is formed by the rib 801 of the space of the shell 8 where the fuse chamber c is located. The at least one fuse 3 is connected in series. The two ends of the at least one fuse 3 connected in series are respectively provided with a conductive element one 4 and a conductive element two 5. The conductive element one 4 at the end opposite to the contact system chamber b is electrically connected with the contact system 2 arranged in the contact system chamber b. The other end of the conductive element two 5 is an external wiring end. One end of the conductive element one 4 is connected with one end of the at least one fuse 3 connected in series. The other end is soft connected with the movable contact 201 in the contact system chamber b. Figure 4 ​As shown, the moving contact 2 in the contact system 2 in the contact system chamber b extends into the arc extinguishing chamber a, and a tripping device 6 is arranged in the contact system chamber b, which is linked with the trip 701 in the mechanism assembly 7 in the contact system chamber b. The tripping device 6 is arranged on the conductive element one 4 electrically connected with the contact system 2, and the tripping device 6 is actuated by the magnetic field and / or heat generated by the large current passing through the conductive element one 4, and then the mechanism assembly 7 in the contact system chamber b is tripped, so as to disconnect the conductive loop.

[0035] The working principle of the embodiment is as follows:

[0036] The tripping device 6 of the integrated circuit protector includes a magnetic tripping device 601. Generally, the first preset value is less than or equal to 2 times the rated current value, and the second preset value is greater than the first preset value and less than or equal to 8 times the rated current value. When the current is greater than the first preset value, the magnetic tripping device 601 can make the trip 701 and the lock 704 disengage, and the mechanism assembly 7 is tripped, so as to realize the low current multiple instantaneous action of the integrated circuit protector, and protect the circuit. When the current is greater than the second preset value, the mechanism assembly 7 and the fuse 3 can act, so as to protect the circuit, and realize the non-breakage protection interval.

[0037] The tripping action time of the mechanism assembly 7 is less than 30 ms, and the action time of the fuse 3 is less than 5 ms.

[0038] Further, the tripping device 6 further includes a thermal tripping device (not shown in the figure), which can be arranged in the same housing of the magnetic tripping device 601. The thermal tripping device can also be arranged in a separate housing from the magnetic tripping device 601, and then form the tripping device 6. A third preset value is arranged, which is less than the first preset value and greater than the rated current value. When the current is greater than the third preset value, the thermal tripping device can make the trip 701 and the lock 704 disengage, and the mechanism assembly 7 is tripped, so as to realize the overload long-time protection, and protect the circuit. Thus, a further non-breakage protection interval is realized.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that they are within the scope of the present disclosure.

[0040] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An integrated circuit protector with uninterrupted protection zones, characterized in that: It includes an arc-extinguishing chamber (a), a contact system chamber (b), and a fuse chamber (c). The arc-extinguishing chamber (a) and the fuse chamber (c) are arranged side by side in the horizontal direction on both sides of the contact system chamber (b). At least one arc-extinguishing chamber (1) is arranged in the arc-extinguishing chamber (a), at least one contact system (2) is arranged in the contact system chamber (b), and at least one fuse (3) is arranged in the fuse chamber (c).

2. An integrated circuit protector with uninterrupted protection zones as described in claim 1, characterized in that: At least one fuse (3) is placed in the fuse chamber (c).

3. An integrated circuit protector with uninterrupted protection zones as described in claim 2, characterized in that: The at least one fuse (3) is connected in series. Each of the at least one fuse (3) connected in series has a first conductive element (4) and a second conductive element (5) at its two ends. The first conductive element (4) at the end opposite to the contact system chamber (b) is electrically connected to the contact system (2) arranged in the contact system chamber (b), and the second conductive element (5) at the other end is an external terminal.

4. An integrated circuit protector with uninterrupted protection zones as described in claim 1, characterized in that: The contact system chamber (b) is also equipped with a tripping device (6). The tripping device (6) is arranged on a conductive element (4) that is electrically connected to at least one fuse (3) and the contact system (2). The magnetic field generated by the large current passing through the conductive element (4) causes the tripping device (6) to engage, thereby tripping the mechanism component (7) in the contact system chamber (b) and thus disconnecting the conductive circuit.

5. An integrated circuit protector with uninterrupted protection zones as described in claim 3, characterized in that: One end of the conductive element (4) is connected to one end of at least one fuse (3) connected in series, and the other end is softly connected to the moving contact (201) in the contact system chamber (b).

6. An integrated circuit protector with uninterrupted protection zones as described in claim 1, characterized in that: The contact system chamber (b) is also provided with a tripping device (6), which includes a magnetic trip unit (601). When the current is greater than a first preset value, the magnetic trip unit (601) can trip the integrated circuit protector. The first preset value is less than or equal to twice the rated current value.

7. An integrated circuit protector with uninterrupted protection zones as described in claim 1, characterized in that: When the current is greater than the second preset value, the fuse (3) can be activated. The second preset value is less than or equal to 8 times the rated current value.

8. An integrated circuit protector with uninterrupted protection zones as described in claim 1, characterized in that: The contact system chamber (b) is also provided with a tripping device (6), which includes a thermal trip unit. When the current is greater than a third preset value, the thermal trip unit can trip the integrated circuit protector. The third preset value is less than the first preset value and greater than the rated current value.

9. An integrated circuit protector with uninterrupted protection zones as described in claim 1, characterized in that: The at least one fuse (3) is arranged in an independent chamber space (c0) within the fuse chamber (c).

10. An integrated circuit protector with uninterrupted protection zones as described in claim 9, characterized in that: The independent chamber spaces (c0) within the fuse chamber (c) are formed by the ribs (801) of the shell (8) where the fuse chamber (c) is located.

Images