Release device and low-voltage electric appliance

Abstract

The utility model discloses a release device and a low-voltage electric appliance, and belongs to the technical field of low-voltage electric appliances. The release device comprises a connecting rod mechanism which is connected with the release device; the shifting rod mechanism is located on one side of the connecting rod mechanism and connected with the connecting rod mechanism. The normally open contact structure is located on one side of the driving lever mechanism and can abut against the driving lever mechanism. The normally-closed contact structure is located on the side, away from the normally-open contact structure, of the shifting rod mechanism and can abut against the shifting rod mechanism. The release device is provided with an independent normally-open contact structure and an independent normally-closed contact structure, the handle is pushed to drive the shift lever mechanism to move, and shift sheets of the normally-open contact structure and the normally-closed contact structure are pushed to move, so that opening and closing of the normally-open contact structure and the normally-closed contact structure are controlled at the same time; therefore, two independent auxiliary loops can be controlled at the same time, the problem that in the prior art, only one auxiliary loop can be controlled by one release device is solved, and the control efficiency and the safety of the circuit can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of tripping device and low-voltage apparatus, belong to low-voltage apparatus technical field. BACKGROUND

[0002] The tripping device has overload, circuit breaking, leakage, undervoltage, overvoltage protection functions, and also has load monitoring, real-time value measurement, demand measurement functions. The accessory tripping device is a key component in circuit breakers, used to automatically cut off power under certain conditions, preventing equipment damage, fires and other safety incidents. In addition, the accessory tripping device can improve the stability and reliability of the power system, providing strong protection for the normal operation of the power system.

[0003] The accessory tripping device includes a housing, a spring, a normally open contact, and a normally closed contact. The normally open contact and the normally closed contact are opposite. The normally open contact is usually an open switch contact when the electrical equipment is not activated. The normally closed contact is usually in a closed state when the electrical equipment is not activated. When current flows, the contact opens and interrupts the current flow. When the current stops flowing, the contact automatically returns to the closed state. However, in the prior art, a tripping device can only control one auxiliary circuit, and cannot control multiple auxiliary circuits simultaneously, resulting in low control efficiency of the circuit and poor safety of the circuit. SUMMARY

[0004] The utility model provides a kind of tripping device and low-voltage apparatus, to solve the problem that a tripping device can only control one auxiliary circuit, cannot control multiple auxiliary circuits simultaneously, resulting in low control efficiency of the circuit, and cannot better guarantee the safety of the circuit.

[0005] The utility model achieves the following technical solutions:

[0006] In a first aspect, the utility model provides a kind of tripping device, comprising:

[0007] A connecting rod mechanism is connected to the tripping device.

[0008] A lever mechanism is located on one side of the connecting rod mechanism and is connected to the connecting rod mechanism.

[0009] A normally open contact structure is located on one side of the lever mechanism and can abut against the lever mechanism.

[0010] A normally closed contact structure is located on the side of the lever mechanism away from the normally open contact structure and can abut against the lever mechanism.

[0011] In an embodiment of the utility model, including first connecting piece and second connecting piece, first connecting piece with second connecting piece connects, second connecting piece with connecting rod mechanism connects, second connecting piece with dialing lever mechanism connects.

[0012] In an embodiment of the utility model, connecting rod mechanism includes handle and connecting rod, handle with connecting rod connects, handle with tripping device rotationally connected, connecting rod with first connecting piece connects.

[0013] In an embodiment of the utility model, dialing lever mechanism includes first protrusion and second protrusion, first protrusion and second protrusion are located at both ends of dialing lever mechanism, first protrusion can be abutted with normally open contact structure, second protrusion can be abutted with normally closed contact structure.

[0014] In an embodiment of the utility model, normally open contact structure includes first dialing piece, first contact and second contact, first dialing piece is located between first contact and second contact, first dialing piece can be connected with first contact and second contact respectively, first dialing piece can be abutted with first protrusion.

[0015] In an embodiment of the utility model, normally closed contact structure includes second dialing piece, third contact and fourth contact, second dialing piece is located between third contact and fourth contact, second dialing piece can be connected with third contact and fourth contact respectively, second dialing piece can be abutted with second protrusion.

[0016] In an embodiment of the utility model, first connecting piece and second connecting piece are rotationally connected with tripping device.

[0017] In an embodiment of the utility model, first connecting piece and second connecting piece are lever mechanism.

[0018] In an embodiment of the utility model, dialing lever mechanism further includes spring.

[0019] Secondly, the utility model provides a kind of low-voltage apparatus, including the tripping device of one kind.

[0020] Beneficial effects

[0021] The trip unit provided by this utility model has independent normally open contact structures and independent normally closed contact structures. By pushing the handle, the lever mechanism moves, simultaneously moving the levers of both the normally open and normally closed contact structures. This achieves the simultaneous opening and closing of both structures, enabling simultaneous control of two independent auxiliary circuits. This solves the problem in existing technologies where a single trip unit can only control one auxiliary circuit, effectively improving circuit control efficiency and safety. The trip unit also includes a spring, which resets the lever mechanism when the handle is in the open state. The first and second connecting parts employ a lever mechanism, which is simple in structure and amplifies force, making force transmission more flexible and convenient. Attached Figure Description

[0022] Fig. 1 This is a front view of the trip unit handle in the disconnected state provided by this utility model.

[0023] Fig. 2 This is a front view of the release device handle in the closed state provided by this utility model.

[0024] In the diagram: 1. Linkage mechanism; 11. Handle; 12. Linkage rod; 2. First connecting member; 3. Second connecting member; 4. Lever mechanism; 41. Spring; 42. First protrusion; 43. Second protrusion; 5. Normally open contact structure; 51. First lever; 52. First contact; 53. Second contact; 6. Normally closed contact structure; 61. Second lever; 62. Third contact; 63. Fourth contact; 100. Trip device. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under", can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature "on", "above" and "upper surface" of second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature.First feature "under", "below" and "lower surface" of second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0028] As shown in Figs. 1-2 The utility model provides a kind of release device, which has overload, circuit breaking, leakage, undervoltage, overvoltage and other protection functions, and can automatically cut off power supply under certain conditions to prevent equipment damage, fire and other safety accidents, thereby improving the stability and reliability of the power system.

[0029] In some embodiments, the release device 100 includes a connecting rod mechanism 1, a first connecting piece 2, a second connecting piece 3, a lever mechanism 4, a normally open contact structure 5, and a normally closed contact structure 6. The connecting rod mechanism 1 is installed on one side of the release device 100 and is rotatably connected between the connecting rod mechanism 1 and the release device 100. The first connecting piece 2 is located on one side of the connecting rod mechanism 1 and is connected with the connecting rod mechanism 1; the second connecting piece 3 is located on the side of the first connecting piece 2 away from the connecting rod mechanism 1 and is connected with the first connecting piece 2; both the first connecting piece 2 and the second connecting piece 3 are installed on the release device 100 and are rotatably connected with the release device 100. The first connecting piece 2 and the second connecting piece 3 are used to transmit the power output by the connecting rod mechanism 1. The lever mechanism 4 is located on one side of the second connecting piece 3 and abuts against the second connecting piece 3, the lever mechanism 4 is movably connected with the release device 100, and the power transmitted by the second connecting piece 3 can drive the lever mechanism 4 to move in the slot of the release device 100. The normally open contact structure 5 and the normally closed contact structure 6 are located on both sides of the lever mechanism 4, and through the movement of the lever mechanism 4, the normally open contact structure 5 and the normally closed contact structure 6 can be pushed to open or close, so that the same release device can control two different auxiliary circuits at the same time, which can effectively improve the control efficiency of the circuit and the safety of the circuit.

[0030] Further, in some embodiments, the connecting rod mechanism 1 includes a handle 11 and a connecting rod 12, the handle 11 is connected with the connecting rod 12, and the handle 11 can drive the connecting rod 12 to rotate together. The handle 11 is installed on the release device 100 and is rotatably connected with the release device 100. The side of the connecting rod 12 away from the handle 11 is connected with the first connecting piece 2, and the connecting rod 12 can drive the first connecting piece 2 to rotate.

[0031] Further, in some embodiments, the lever mechanism 4 comprises a spring 41, a first protrusion 42 and a second protrusion 43, the spring 41 is installed in the lever mechanism 4 and located between the second connecting piece 3 and the normally open contact structure 5, the first protrusion 42 and the second protrusion 43 are located at two ends of the lever mechanism 4 respectively, and the protrusion directions of the two are consistent. The spring 41 is located between the first protrusion 42 and the second protrusion 43, and the inside of the lever mechanism 4 is provided with a guide column and a fixing piece, the guide column is connected with the movable piece, the spring 41 is sleeved on the outer periphery of the guide column, and the two ends are respectively abutted with the lever mechanism 4 and the fixing piece. The first protrusion 42 is located on the side close to the normally open contact structure 5, and the second protrusion 43 is located on the side close to the normally closed contact structure 6. The second connecting piece 3 rotates to drive the lever mechanism 4 to move in the slot of the tripping device 100, so that the first protrusion 42 abuts against the normally open contact structure 5 and pushes the normally open contact structure 5 to close, and the second protrusion 42 abuts against the normally closed contact structure 6 and pushes the normally closed contact structure 6 to open, so as to realize the purpose of closing the normally open contact and opening the normally closed contact. At this time, the spring 41 is in a squeezed state, and when the handle 11 is pushed to the disconnected state again, the spring 41 provides power for the lever mechanism 4 to reset the lever mechanism 4.

[0032] Further, in some embodiments, the normally open contact structure 5 comprises a first lever piece 51, a first contact 52 and a second contact 53, the first lever piece 51 is located between the first contact 52 and the second contact 53, and the opening and closing of the normally open contact structure 5 is controlled by controlling the connection relationship between the first lever piece 51 and the first contact 52 and the second contact 53. When the normally open contact structure 5 is in the open state, the first lever piece 51 is connected with the first contact 52, and when the normally open contact structure 5 is in the closed state, the first protrusion 42 abuts against the first lever piece 51 to push the first lever piece 51 to be connected with the second contact 53.

[0033] Further, in some embodiments, the normally closed contact structure 6 comprises a second lever piece 61, a third contact 62 and a fourth contact 63, the second lever piece 61 is located between the third contact 62 and the fourth contact 63, and the opening and closing of the normally closed contact structure 6 is controlled by controlling the connection relationship between the second lever piece 61 and the third contact 62 and the fourth contact 63. When the normally closed contact structure 6 is in the closed state, the second lever piece 61 is connected with the third contact 62, and when the normally closed contact structure 6 is in the open state, the second protrusion 43 abuts against the second lever piece 61 to push the second lever piece 61 to be connected with the fourth contact 63.

[0034] Optionally, the handle 11, the first connecting piece 2 and the second connecting piece 3 are rotationally connected with the tripping device 100, and specifically, the three can be connected through a transmission shaft or a bearing.

[0035] Optionally, the first connecting piece 2 and the second connecting piece 3 are lever mechanisms, the lever mechanisms can amplify the force, a smaller force can move a larger load, so that the force transmission is more flexible and convenient, and the worker only needs to use a smaller force to push the handle 11, so that the first toggle plate 51 and the second toggle plate 61 can be pushed to change the contact position.

[0036] In addition, the utility model provides a low-voltage electric appliance, the low-voltage electric appliance includes the tripping device, when the low-voltage electric appliance appears overload, open circuit, electric leakage, under voltage, overvoltage and so on, can automatically cut off power supply, prevent the equipment damage, the occurrence of fire disaster and so on safety accidents, thereby improve the stability and reliability of electric power system.

[0037] The utility model working principle: when handle 11 is in the disconnected state, normally open contact structure 5 is in the open state, first toggle plate 51 is connected with first contact 52, normally closed contact structure 6 is in the closed state, second toggle plate 61 is connected with third contact 62. When handle 11 is in the closed position, handle 11 is driven to rotate by external force, thereby drive connecting rod 12 to rotate, connecting rod 12 in turn drive first connecting piece 2 and second connecting piece 3 to rotate, second connecting piece 3 drive lever mechanism 4 to move, first protruding 42 and first toggle plate 51 abut and promote first toggle plate 51 and second contact 53 are connected, make normally open contact structure 5 be in the closed state. Second protruding 43 and second toggle plate 61 abut, promote second toggle plate 61 and fourth contact 63 are connected, make normally closed contact structure 6 be in the open state, through a tripping device 100, can control two independent auxiliary circuits simultaneously.

[0038] The technical features of the above embodiments can be combined arbitrarily, to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that the description in the specification.

[0039] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the scope of the invention patent. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

[0040] The principle and implementation mode of the present application are described by using specific embodiments, and the above embodiment is only used for helping to understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A trip unit, characterized by, The utility model relates to a kind of trip device, including: Connecting rod mechanism (1) is connected with the tripping device (100); Dial lever mechanism (4) is located in one side of the connecting rod mechanism (1), and is connected with the connecting rod mechanism (1); Normally open contact structure (5) is located in one side of the dial lever mechanism (4), and can be abutted with the dial lever mechanism (4); Normally closed contact structure (6) is located in the side of the dial lever mechanism (4) away from normally open contact structure (5), and can be abutted with the dial lever mechanism (4); The dial lever mechanism (4) includes first protrusion (42) and second protrusion (43), and the first protrusion (42) and the second protrusion (43) are located at both ends of the dial lever mechanism (4), the first protrusion (42) can be abutted with the normally open contact structure (5), and the second protrusion (43) can be abutted with the normally closed contact structure (6).

2. A trip unit according to claim 1, wherein It includes first connecting piece (2) and second connecting piece (3), and the first connecting piece (2) is connected with the second connecting piece (3), the first connecting piece (2) is connected with the connecting rod mechanism (1), and the second connecting piece (3) is connected with the dial lever mechanism (4).

3. A relay device according to claim 2, characterised in that The connecting rod mechanism (1) includes handle (11) and connecting rod (12), the handle (11) is connected with the connecting rod (12), the handle (11) is rotatably connected with the tripping device (100), and the connecting rod (12) is connected with the first connecting piece (2).

4. The trip unit of claim 1, wherein: The normally open contact structure (5) includes first dial piece (51), first contact (52) and second contact (53), the first dial piece (51) is located between the first contact (52) and the second contact (53), the first dial piece (51) can be connected with the first contact (52) and the second contact (53) respectively, and the first dial piece (51) can be abutted with the first protrusion (42).

5. The trip unit of claim 1, wherein, The normally closed contact structure (6) includes second dial piece (61), third contact (62) and fourth contact (63), the second dial piece (61) is located between the third contact (62) and the fourth contact (63), the second dial piece (61) can be connected with the third contact (62) and the fourth contact (63) respectively, and the second dial piece (61) can be abutted with the second protrusion (43).

6. A relay device according to claim 3, wherein The first connecting piece (2) and the second connecting piece (3) are rotatably connected with the tripping device (100).

7. A relay device according to claim 6, characterised in that The first connecting piece (2) and the second connecting piece (3) are lever mechanisms.

8. The trip unit of claim 1, wherein: The dial lever mechanism (4) further includes spring (41).

9. A low voltage electrical apparatus, characterized in that, It includes the tripping device (100) of any one of claims 1-8.

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