Mechanical anti-tripping device and circuit breaker thereof

Abstract

The utility model discloses a mechanical anti-tripping device and a circuit breaker thereof. A mechanical anti-bouncing device comprises a fixing plate; the guide column is arranged on one side of the fixing plate; the button is arranged on the guide column in a sleeving manner and can slide along the guide column; the wedge-shaped plate is arranged on one side of the button; the roller pin shaft is arranged on the fixed plate and is matched with the wedge-shaped plate; the lapping plate is hinged to the roller pin shaft; and the anti-jumping push plate is connected with the lap joint plate and can slide on the fixing plate. The mechanical anti-tripping device is applied to the circuit breaker. The mechanical anti-tripping device and the circuit breaker thereof have the following beneficial effects that the mechanical anti-tripping device and the circuit breaker thereof have the characteristics of high reliability, long service life, low test cost and low environmental sensitivity.

Description

Technical Field

[0001] The utility model relates to a mechanical anti-jump device and a circuit breaker thereof. Background Art

[0002] The anti-jump device is a protective device that prevents the circuit breaker from being closed again as long as the operating mechanism that causes the closing operation remains in the closed position if the switch is opened for some reason. Its basic concept is to prevent secondary closing and reduce the switching of closing and opening to prevent the circuit breaker from exploding.

[0003] The existing anti-tripping device generally adopts electrical anti-tripping, that is, an anti-tripping device in the form of a coil-push rod. In the event of a closing fault, the circuit remains in a closed state and connected, but the opening switch is continuously opened due to a short circuit or overload, causing the two states to jump continuously. The anti-tripping device is mainly used to prevent the circuit breaker from improperly reclosing after a fault occurs, so as to reduce safety risks and equipment damage. There are the following problems:

[0004] 1. Inaccurate fault detection: The anti-trip device may sometimes fail to accurately detect the fault condition, causing it to mistakenly allow closing when it should not, or mistakenly prevent closing when it should.

[0005] 2. Maintenance and testing complexity: The testing and maintenance of anti-trip devices are relatively complex and require specific procedures and tools.

[0006] 3. Electrical and mechanical durability issues: Frequent operation will cause wear of the mechanical and electrical components of the anti-trip device, which will reduce its reliability and life.

[0007] 4. Environmental sensitivity: Anti-trip devices are sensitive to environmental conditions, such as temperature, humidity and pollution, which affect their performance and life. Utility Model Content

[0008] The utility model aims to provide a mechanical anti-tripping device and a circuit breaker thereof, which have the characteristics of high reliability, long service life, low testing cost and low sensitivity to the environment.

[0009] The above technical objectives of the utility model are achieved through the following technical solutions:

[0010] A mechanical anti-jump device comprises: a fixed plate; a guide column, which is arranged on one side of the fixed plate; a button, which is sleeved on the guide column and can slide along the guide column; a wedge plate, which is arranged on one side of the button; a roller pin, which is arranged on the fixed plate and cooperates with the wedge plate; a lap plate, which is hinged to the roller pin; and an anti-jump push plate, which is connected to the lap plate and can slide on the fixed plate.

[0011] The utility model is further configured to include a limit column, which is arranged on the fixed plate and close to one end of the anti-jump push plate;

[0012] One end of the anti-jump push plate is provided with a straight surface and an inclined surface connected with the straight surface, and the straight surface and the inclined surface are respectively matched with the limiting column.

[0013] The utility model is further configured as follows: it also includes a top plate, which is arranged on the other side of the anti-jump push plate and can rotate around the fixed plate, and the top plate is fixedly connected with a closing rod.

[0014] The utility model is further configured as follows: when closing the circuit breaker, pressing the button causes the wedge plate to move along the guide column to drive the roller pin shaft to slide, thereby driving the overlap plate and the anti-jump push plate to move and push the top plate to rotate, thereby driving the closing rod to close the circuit breaker; when a circuit breaker opening fault occurs, the top plate is reset to cause the anti-jump push plate to separate from the top plate, thereby preventing secondary closing of the circuit breaker.

[0015] A circuit breaker uses the above-mentioned mechanical anti-trip device.

[0016] In summary, the utility model has the following beneficial effects: the mechanical anti-tripping device and the circuit breaker thereof have the characteristics of high reliability, long service life, low testing cost and low sensitivity to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment;

[0018] Figure 2 It is a bottom view structural schematic diagram of an embodiment;

[0019] Figure 3 This is a side view of the structure of the embodiment after the interlocking plate is removed;

[0020] Figure 4 for Figure 3 Schematic diagram of the top view structure.

[0021] Figure numerals: 1. fixed plate; 2. guide column; 3. button; 4. wedge plate; 5. roller pin; 6. waist groove; 7. overlap plate; 8. anti-jump push plate; 9. limit column; 10. inclined plane; 11. top plate; 12. closing rod. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0024] In the description of the present utility model, "multiple" means two or more than two, unless otherwise clearly specified and specifically defined. In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1 As shown, a mechanical anti-jump device is arranged in the closing and opening mechanism of the circuit breaker to prevent secondary closing. It includes a fixed plate 1. The fixed plate 1 is fixedly connected to the closing and opening mechanism. A guide column 2 is arranged on one side of the fixed plate 1. A button 3 is sleeved on the guide column 2. The button 3 can slide on the guide column 2.

[0027] like Figure 2 , Figure 3 As shown, a wedge plate 4 is provided on one side of the button 3. Correspondingly, a roller pin 5 is provided on the fixed plate 1. The roller pin 5 is provided in cooperation with the wedge plate 4. A waist-shaped groove is provided on the fixed plate 1. The roller pin 5 is slidably provided in the waist-shaped groove. When the operator presses the button 3, the wedge plate 4 moves along the guide column 2, thereby driving the roller pin 5 matched therewith to slide along the wedge plate 4 in the waist-shaped groove.

[0028] like Figure 3 , Figure 4As shown, the roller pin 5 is hingedly provided with a lap plate 7. One end of the lap plate 7 is connected to an anti-jump push plate 8. Both the anti-jump push plate 8 and the lap plate 7 can slide on the fixed plate 1. The fixed plate 1 is provided with a limit column 9 on one side of the anti-jump push plate 8. Correspondingly, the end of the anti-jump push plate 8 is provided with a straight surface close to the limit column 9 and an inclined surface 10 connected to the straight surface.

[0029] Further, a top plate 11 is provided on one side of the anti-jump push plate 8. The top plate 11 is L-shaped, and a closing rod 12 is fixedly connected to the top plate 11. In the state shown in the figure, the circuit breaker is in an open state. One end of the anti-jump push plate 8 abuts against the top plate 11.

[0030] When the operator presses the button 3, the roller pin 5 connects the lap plate 7 and the anti-jump push plate 8 to move. At this time, the limit column 9 is in the direct position of the anti-jump push plate 8, so that the anti-jump push plate 8 moves horizontally. The anti-jump push plate 8 abuts against the top plate 11, so that the top plate 11 rotates, the closing rod 12 closes, and the circuit is connected.

[0031] Afterwards, the button 3 continues to move along the guide column 2, so that the inclined surface 10 on the anti-jump push plate 8 contacts the limit column 9. Under the limit of the limit column 9, the anti-jump push plate 8 and the lap plate 7 swing clockwise around the position of the roller pin 5. At this time, one end of the anti-jump push plate 8 is separated from the top plate 11.

[0032] When the closing circuit fails, the closing and opening mechanism drives the opening, and at this time, the top plate 11 is reset to the position shown in the figure. At this time, due to the clutch between the anti-jumping push plate 8 and the top plate 11, the top plate 11 is no longer pushed by the anti-jumping push plate 8, thereby preventing the secondary closing and achieving the purpose of anti-jumping. After the closing fault is eliminated, the closing is achieved by turning the knob on the back of the closing rod 12, and the button 3 is pulled and pressed again to play the anti-jumping role again.

[0033] Compared with the existing electrical anti-tripping, the above configuration has lower testing cost, higher reliability of mechanical anti-tripping, longer service life, lower sensitivity to environmental indicators such as temperature and humidity, simple assembly and better anti-tripping effect.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A mechanical anti-jump device, characterized in that ,include: Fixed plate (1); A guide column (2), wherein the guide column (2) is arranged on one side of the fixing plate (1); A button (3), wherein the button (3) is sleeved on the guide column (2) and is capable of sliding along the guide column (2); A wedge-shaped plate (4), wherein the wedge-shaped plate (4) is arranged on one side of the button (3); A roller pin (5), the roller pin (5) being arranged on the fixing plate (1) and cooperating with the wedge plate (4); A lap plate (7), the lap plate (7) being hinged to the roller pin (5); An anti-jump push plate (8) is connected to the lap plate (7) and is capable of sliding on the fixed plate (1).

2. The mechanical anti-jump device according to claim 1, characterized in that , further comprising a limit column (9), wherein the limit column (9) is disposed on the fixed plate (1) and close to one end of the anti-jump push plate (8); The one end of the anti-jump push plate (8) is provided with a straight surface and an inclined surface (10) connected to the straight surface, and the straight surface and the inclined surface (10) are respectively matched with the limiting column (9).

3. The mechanical anti-jump device according to claim 2 is characterized in that , further comprising a top plate (11), wherein the top plate (11) is arranged on the other side of the anti-jump push plate (8) and is capable of rotating around the fixed plate (1), and the top plate (11) is fixedly connected to a closing rod (12).

4. The mechanical anti-jump device according to claim 3 is characterized in that When closing the switch, pressing the button (3) causes the wedge plate (4) to move along the guide column (2), driving the roller pin shaft (5) to slide, thereby driving the lap plate (7) and the anti-jump push plate (8) to move and push the top plate (11) to rotate, thereby driving the closing rod (12) to close the switch; when a switch-off fault occurs, the top plate (11) is reset, causing the anti-jump push plate (8) to detach from the top plate (11), thereby preventing secondary closing of the switch.

5. A circuit breaker, characterized in that , including a mechanical anti-jump device as described in any one of claims 1 to 4.

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