breaker

Abstract

The present invention relates to the field of circuit breakers, and in particular, to a circuit breaker. The circuit breaker comprises a housing, a button and a protective cover. When the circuit breaker is connected to an external wire, the external wire and the button are located on the same side of the housing; the protective cover covers the button, and the protective cover has a shielding plate, which is opposite to and spaced from the pressing surface of the button, and the shielding plate can at least shield the side of the pressing surface of the button close to the external wire, so that the protective cover can prevent the external wire from blocking the button from being completely reset. The circuit breaker provided by the present invention solves the problem of the external wire blocking the button from being completely reset by arranging a protective cover on the button, so that the button is not prone to slipping, which not only solves the inconvenience caused by manually pulling away the wire, but also makes the operating mechanism less likely to be damaged.

Description

Technical Field

[0001] The present invention relates to the field of circuit breakers, and in particular to a circuit breaker. Background Art

[0002] Circuit breakers are commonly used switching components in power distribution cabinets, which can close, carry and interrupt current under normal or abnormal circuit conditions.

[0003] The circuit breaker is provided with a button for opening and closing operations, so that the circuit breaker can be opened and closed by pulling and pressing the button; a wire is also provided on the side where the button of the circuit breaker is located. Therefore, after the button is pressed to close the circuit, the wire is easily blocked in the reset space of the button. As a result, the button cannot be completely reset when it is tripped or opened, resulting in a slip problem when closing the circuit next time, and it cannot be used normally, and the wire needs to be manually pulled apart; when the button of the circuit breaker is electrically reset, the person is not on site. Once the button is not completely reset, the subsequent operation cannot be continued normally, and repeated closing and closing can easily cause damage to the operating mechanism.

[0004] In summary, how to overcome the above-mentioned defects of the existing circuit breakers is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a circuit breaker to solve the technical problem that a button of a circuit breaker in the prior art cannot be completely reset due to being blocked by a wire.

[0006] The circuit breaker provided by the present invention comprises a shell, a button and a protective cover. When the circuit breaker is connected to an external wire, the external wire and the button are located on the same side of the shell, so that the protective cover can prevent the external wire from blocking the button from completely resetting.

[0007] The protective cover covers the button, and the protective cover has a shielding plate, which is opposite to the pressing surface of the button and is arranged at a distance, and the shielding plate can at least shield the side of the pressing surface of the button close to the external wire.

[0008] Preferably, as an implementable embodiment, the protective cover is snap-fitted with the shell.

[0009] Preferably, as an implementable embodiment, a first buckle is provided at a portion of the protective cover close to the external wire, a first buckle hole is provided on the shell, and the first buckle is engaged with the first buckle hole.

[0010] A second buckle is provided at a portion of the protective cover away from the external wire, a second buckle hole is provided on the shell, and the second buckle is engaged with the second buckle hole.

[0011] Preferably, as an implementation method, there are two second buckles, and the two second buckles are respectively located on two opposite sides of the shielding plate;

[0012] And / or, the first clamping hole is an operating hole on the shell.

[0013] Preferably, as an implementable embodiment, a portion of the protective cover close to the external wire is rotationally engaged with the shell, and a portion of the protective cover away from the external wire is snap-fitted with the shell.

[0014] Preferably, as an implementation method, a rotating shaft is provided on one side of the protective cover close to the external wire, and the rotating shaft is parallel to the side of the button facing the external wire; a mounting hole is provided on the shell, and the rotating shaft is rotatably matched with the mounting hole.

[0015] A third buckle is arranged at a portion of the protective cover away from the external wire, a third clamping hole is provided on the shell, and the third buckle is engaged with the third clamping hole.

[0016] Preferably, as an implementation method, there are two rotating shafts, and the two rotating shafts are respectively located on both sides of the shielding plate, and the two rotating shafts are located on the same axis;

[0017] And / or, there are two third buckles, and the two third buckles are respectively located on two sides of the shielding plate.

[0018] Preferably, as an implementation method, the shell has two guard plates, and the two guard plates are respectively located on both sides of the button, and the two guard plates extend outward from the end face of the shell along the lifting direction of the button, and the mounting hole is opened at a position of the guard plate close to the external wire, and the third clamping hole is opened at a position of the guard plate away from the external wire.

[0019] Preferably, as an implementable embodiment, the mounting hole and the third clamping hole are both provided at the end surface of the guard plate facing away from the shell, the pressing surface of the button is rectangular, and the four corners of the pressing surface of the button are provided with first avoidance grooves for avoiding the protective cover.

[0020] Preferably, as an implementable embodiment, a second avoidance groove is provided on the baffle plate, and the notch of the second avoidance groove faces the side away from the external wire; a third avoidance groove is provided on the side of the protective cover away from the external wire, and the third avoidance groove penetrates the protective cover along the pressing direction of the button, and the third avoidance groove is communicated with the second avoidance groove.

[0021] Preferably, as an implementable embodiment, two guide and limit convex strips are further provided on the shell, and the extension direction of the two guide and limit convex strips is arranged along the length direction of the shell.

[0022] Preferably, as an implementation method, the shell has two guard plates, the two guard plates are respectively located on both sides of the button, and the two guard plates extend outward from the end face of the shell along the lifting direction of the button, and the protective cover is connected to the two guard plates.

[0023] Preferably, as an implementable embodiment, the housing is further provided with a wiring terminal at one end where the button is provided, and the external wire is connected to the circuit breaker via the wiring terminal.

[0024] The beneficial effects of the circuit breaker provided by the present invention are:

[0025] The circuit breaker provided by the present invention comprises a shell, an external wire and a button, wherein the external wire and the button are located on the same side of the shell, that is, the external wire is a wire that is easily blocked in the reset space of the button.

[0026] In particular, in the circuit breaker provided by the present invention, a protective cover is additionally provided, and the protective cover is used to cover the button. The protective cover has a baffle, which is opposite to the pressing surface of the button and is arranged at a distance, so that the baffle will not hinder the normal lifting of the button, that is, after the protective cover is covered on the button, the button can work normally; the baffle can at least form a shield for the side of the pressing surface of the button close to the external wire, so that the baffle can block the external wire outside the reset space of the button, so that when the button is tripped or opened, the button will not be blocked by the external wire and can be completely reset. Then, when the button is closed next time, it can be closed smoothly and the problem of slipping is not easy to occur. It not only solves the inconvenience caused by manually pulling away the wire, but also the operating mechanism is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a circuit breaker provided in an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of a protective cover in a first circuit breaker provided by an embodiment of the present invention;

[0030] Figure 3 An exploded view of a partial structure of a first circuit breaker provided by an embodiment of the present invention;

[0031] Figure 4 for Figure 3 A magnified view of part A;

[0032] Figure 5 A schematic diagram of the three-dimensional structure of a protective cover in a second circuit breaker provided in an embodiment of the present invention;

[0033] Figure 6 An exploded view of a part of the structure of the second circuit breaker provided by an embodiment of the present invention;

[0034] Figure 7 for Figure 6 A magnified view of part B;

[0035] Figure 8 A schematic diagram of the three-dimensional structure of a protective cover in a third circuit breaker provided in an embodiment of the present invention;

[0036] Fig. 9 An exploded view of a part of the structure of a third circuit breaker provided by an embodiment of the present invention;

[0037] Fig.10 for Fig. 9 Enlarged view of part C;

[0038] Fig.11 A schematic front view of the structure of a third circuit breaker provided by an embodiment of the present invention;

[0039] Fig.12 for Fig.11 Enlarged view of part D.

[0040] icon:

[0041] 100 - housing; 110 - guard plate; 111 - first clamping hole; 112 - second clamping hole; 113 - third clamping hole; 114 - mounting hole; 120 - end face; 130 - wiring terminal; 140 - guide limit convex strip;

[0042] 200 - external wire;

[0043] 300 - button; 310 - first avoidance groove;

[0044] 400 - protective cover; 410 - shielding plate; 411 - second avoidance groove; 420 - first buckle; 430 - second buckle; 440 - rotating shaft; 450 - third buckle; 460 - third avoidance groove; 470 - fourth avoidance groove. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0049] See also Figure 1 and Figure 2 This embodiment provides a circuit breaker, which includes a shell 100 and a button 300, wherein when the circuit breaker is connected to an external wire 200, the external wire 200 and the button 300 are located on the same side of the shell 100, that is, the external wire 200 is a wire that is easily blocked in the reset space of the button 300.

[0050] In particular, in the circuit breaker provided in the present embodiment, a protective cover 400 is additionally provided, and the protective cover 400 is used to cover the button 300. The protective cover 400 has a baffle plate 410, and the baffle plate 410 is opposite to the pressing surface of the button 300 and is arranged at a distance, so that the baffle plate 410 will not hinder the normal lifting of the button 300, that is, after the protective cover 400 covers the button 300, the button 300 can work normally; the baffle plate 410 can at least form a shield for the side of the pressing surface of the button 300 close to the external wire 200, so that the baffle plate 410 can block the external wire 200 outside the reset space of the button 300, so that when tripping or opening, the button 300 will not be blocked by the external wire 200 and can be completely reset. Then, when closing the switch next time, it can be closed smoothly, and the problem of slipping buckle is not easy to occur, which not only solves the inconvenience caused by manually pulling away the wire, but also makes the operating mechanism not easy to be damaged.

[0051] In the specific structure of the circuit breaker provided in this embodiment, the protective cover 400 can be installed on the housing 100 by using any of the following connection methods.

[0052] The first one, see Figure 1 - Figure 4 , the protective cover 400 is snap-fitted to the shell 100, making disassembly easy.

[0053] Specifically, a first buckle 420 is provided at a portion of the protective cover 400 close to the external wire 200, and correspondingly, a first buckle hole 111 is opened on the shell 100, and the first buckle 420 on the protective cover 400 is snap-fitted with the first buckle hole 111 on the shell 100; at the same time, a second buckle 430 is provided at a portion of the protective cover 400 away from the external wire 200, and correspondingly, a second buckle hole 112 is opened on the shell 100, and the second buckle 430 on the protective cover 400 is snap-fitted with the second buckle hole 112 on the shell 100. In this way, both the portion of the protective cover 400 close to the external wire 200 and the portion away from the external wire 200 can be fixed to the shell 100, thereby not only realizing a detachable connection, but also the fixed protective cover 400 has better stability.

[0054] Preferably, two of the above-mentioned second clips 430 can be arranged on the protective cover 400, and the two second clips 430 can be respectively arranged on the opposite sides of the shielding plate 410, that is, the two second clips 430 are respectively located at the two corners of the protective cover 400 facing away from the external wire 200, so that the two corners of the protective cover 400 facing away from the external wire 200 can be adjacent to the shell 100, and the stability is better.

[0055] The operating hole on the shell 100 can be used as the above-mentioned first clamping hole 111. After the wire is inserted into the wiring hole, the screw in the operating hole is tightened to lock the wire with the screw. After that, the first buckle 420 of the protective cover 400 is inserted into the operating hole. In this way, there is no need to open the first clamping hole 111 separately on the shell 100, which not only reduces the processing cost but also reduces the damage to the structure of the shell 100.

[0056] Specifically, two guard plates 110 are provided on the shell 100, and the two guard plates 110 are respectively located on both sides of the button 300, and the two guard plates 110 are extended outward from the end surface 120 of the shell 100 along the lifting direction of the button 300, and the above-mentioned two second card holes 112 are respectively opened at the opposite positions of the two guard plates 110.

[0057] The second one, see Figure 5 - Fig.12 , the part of the protective cover 400 close to the external wire 200 is rotated to cooperate with the shell 100, and the part of the protective cover 400 away from the external wire 200 is clamped with the shell 100. When the protective cover 400 needs to be opened, it is only necessary to separate the part of the protective cover 400 that is clamped with the shell 100 from the shell 100, and then rotate the protective cover 400. There is no need to remove the entire protective cover 400. Therefore, the protective cover 400 does not need to be placed separately after opening. It is not only convenient, but also less likely to cause the protective cover 400 to be lost or damaged due to improper placement.

[0058] Specifically, a rotating shaft 440 is provided on the side of the protective cover 400 close to the external wire 200, and the rotating shaft 440 is arranged to be parallel to the side of the button 300 facing the external wire 200. Accordingly, a mounting hole 114 is opened on the shell 100, and the rotating shaft 440 on the protective cover 400 is rotatably matched with the mounting hole 114 on the shell 100, so that the protective cover 400 can rotate around the rotating shaft 440; at the same time, a third buckle 450 is provided on the side of the protective cover 400 away from the external wire 200, and accordingly, a third clamping hole 113 is opened on the shell 100, and the third buckle 450 on the protective cover 400 is clamped and matched with the third clamping hole 113 on the shell 100, so that the part of the protective cover 400 away from the external wire 200 can be clamped with the shell 100.

[0059] When installing the protective cover 400, first insert the rotating shaft 440 of the protective cover 400 into the corresponding installation hole 114, and then rotate the protective cover 400 around the rotating shaft 440 so that the third buckle 450 on the protective cover 400 is inserted into the third buckle hole 113 of the shell 100. In this way, the installation of the protective cover 400 is completed; when opening, pull the third buckle 450 on the protective cover 400 out of the third buckle hole 113, and then rotate the protective cover 400 around the rotating shaft 440.

[0060] Preferably, two of the above-mentioned rotating shafts 440 may be provided on the protective cover 400 , and the two rotating shafts 440 may be respectively provided on both sides of the shielding plate 410 , so that the force on the protective cover 400 may be more balanced.

[0061] Preferably, two of the third buckles 450 are provided on the protective cover 400 , and the two third buckles 450 are respectively provided on both sides of the shielding plate 410 , so that the force on the protective cover 400 is more balanced.

[0062] Specifically, two guard plates 110 are provided on the housing 100, and the two guard plates 110 are respectively located on both sides of the button 300, and the two guard plates 110 are extended from the end surface 120 of the housing 100 to the outside along the lifting direction of the button 300, and the above-mentioned mounting hole 114 is opened at the position of the guard plate 110 close to the external wire 200, and the third clamping hole 113 is opened at the position of the guard plate 110 away from the external wire 200. It can be understood that when using Figure 4 When the protective cover 400 is matched with the housing 100 and the protective cover 110, the protective cover 400 can be connected with the housing 100 and the protective cover 110. In summary, the protective cover 400 can be connected with the two protective covers 110 by using the above two forms.

[0063] The third locking hole 113 is formed at a portion of the guard plate 110 that is away from the end surface 120 of the housing 100 , so as to facilitate the cooperation between the third buckle 450 and the third locking hole 113 .

[0064] The mounting hole 114 can be provided at a portion of the guard plate 110 close to the end surface 120 of the housing 100 (see Figure 5 - Figure 7 ), it may also be provided at a portion of the guard plate 110 that is away from the end surface 120 of the housing 100 (see Figure 8 - Fig.12 ).

[0065] See also Figure 8 - Fig.12 It is preferred that the mounting hole 114 is opened at the end surface 120 of the guard plate 110 which is away from the shell 100. On this basis, the first avoidance grooves 310 are opened at the four corners of the rectangular pressing surface of the button 300 in this embodiment to avoid the protective cover 400. In this way, the protective cover 400 can be opened and closed without pressing the button 300, and the operation is more convenient.

[0066] Specifically, see Figure 2 , Figure 5 and Figure 8A second avoidance groove 411 can be opened on the above-mentioned shielding plate 410, and the notch of the second avoidance groove 411 is set to face the side away from the external wire 200; at the same time, a third avoidance groove 460 is opened on the side of the protective cover 400 away from the external wire 200, and the third avoidance groove 460 passes through the protective cover 400 along the pressing direction of the button 300, and the third avoidance groove 460 is connected with the second avoidance groove 411. In this way, fingers or other operating tools can pass through the second avoidance groove 411 and the third avoidance groove 460, which is convenient for implementing the pressing operation of the button 300.

[0067] See also Figure 1 , Figure 2 and Figure 5 and Figure 8 The external wire 200 is often close to the button 300 , therefore, a fourth avoidance groove 470 may be provided on a side of the protective cover 400 facing the external wire 200 to avoid the external wire 200 and prevent interference.

[0068] like Figure 3 As shown, two guide limit ridges 140 are further provided on the housing 100, and the extension direction of the two guide limit ridges 140 is arranged along the length direction of the housing 100. In this way, when the circuit breaker is slid into the electric control box, the guide limit ridges 140 can be used for limit guidance, which is conducive to the normal insertion of the circuit breaker.

[0069] like Figure 4 As shown, the housing 100 is further provided with a connection terminal 130 at one end provided with the button 300, and the external wire 200 is connected to the circuit breaker through the connection terminal 130. This is conducive to improving the convenience of wiring.

[0070] In summary, the present invention discloses a circuit breaker that overcomes many technical defects of conventional circuit breakers. The circuit breaker provided in this embodiment solves the problem that the external wire 200 blocks the button 300 from completely resetting by providing a protective cover 400 on the button 300, so that the button 300 is not prone to slipping, which not only solves the inconvenience caused by manually pulling away the wire, but also makes the operating mechanism less likely to be damaged.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit breaker, characterized in that: It comprises a housing (100), a button (300) and a protective cover (400); when the circuit breaker is connected to an external wire (200), the external wire (200) and the button (300) are located on the same side of the housing (100); The protective cover (400) covers the button (300), and the protective cover (400) has a shielding plate (410), the shielding plate (410) is opposite to the pressing surface of the button (300) and is arranged at a distance, and the shielding plate (410) can at least shield the side of the pressing surface of the button (300) close to the external wire (200), so that the protective cover (400) can prevent the external wire (200) from blocking the button (300) from being completely reset; The shielding plate (410) is provided with a second avoidance groove (411), the notch of the second avoidance groove (411) faces the side away from the external wire (200); the side of the protective cover (400) away from the external wire (200) is provided with a third avoidance groove (460), and the third avoidance groove (460) penetrates the protective cover (400) along the pressing direction of the button (300), and the third avoidance groove (460) is communicated with the second avoidance groove (411); The housing (100) is also provided with two guide and limit convex strips (140), and the extension direction of the two guide and limit convex strips (140) is arranged along the length direction of the housing (100).

2. The circuit breaker according to claim 1, characterized in that: The protective cover (400) is snap-fitted with the housing (100).

3. The circuit breaker according to claim 2, characterized in that: A first buckle (420) is provided at a portion of the protective cover (400) close to the external wire (200), a first buckle hole (111) is provided on the housing (100), and the first buckle (420) is engaged with the first buckle hole (111); A second buckle (430) is provided at a portion of the protective cover (400) away from the external wire (200), a second buckle hole (112) is provided on the housing (100), and the second buckle (430) is snap-fitted with the second buckle hole (112).

4. The circuit breaker according to claim 3, characterized in that: There are two second buckles (430), and the two second buckles (430) are respectively located on two opposite sides of the shielding plate (410); And / or, the first clamping hole (111) is an operating hole on the housing (100).

5. The circuit breaker according to claim 1, characterized in that: The portion of the protective cover (400) close to the external wire (200) is rotationally matched with the housing (100), and the portion of the protective cover (400) away from the external wire (200) is snap-fitted with the housing (100).

6. The circuit breaker according to claim 5, characterized in that: A rotating shaft (440) is provided on one side of the protective cover (400) close to the external wire (200), and the rotating shaft (440) is parallel to the side of the button (300) facing the external wire (200); a mounting hole (114) is provided on the housing (100), and the rotating shaft (440) is rotatably matched with the mounting hole (114); A third buckle (450) is provided at a portion of the protective cover (400) away from the external wire (200), a third buckle hole (113) is provided on the housing (100), and the third buckle (450) is engaged with the third buckle hole (113).

7. The circuit breaker according to claim 6, characterized in that: There are two rotating shafts (440), the two rotating shafts (440) are respectively located on two sides of the shielding plate (410), and the two rotating shafts (440) are located on the same axis; And / or, there are two third buckles (450), and the two third buckles (450) are respectively located on two sides of the shielding plate (410).

8. The circuit breaker according to claim 7, characterized in that: The shell (100) has two guard plates (110), and the two guard plates (110) are respectively located on both sides of the button (300). The two guard plates (110) extend outward from the end surface (120) of the shell (100) along the lifting direction of the button (300). The mounting hole (114) is opened at a position of the guard plate (110) close to the external wire (200), and the third clamping hole (113) is opened at a position of the guard plate (110) away from the external wire (200).

9. The circuit breaker according to claim 8, characterized in that The mounting hole (114) and the third clamping hole (113) are both provided at a portion of the end surface (120) of the guard plate (110) facing away from the shell (100); the pressing surface of the button (300) is rectangular, and first avoidance grooves (310) for avoiding the protective cover (400) are provided at the four corners of the pressing surface of the button (300).

10. The circuit breaker according to any one of claims 1 to 9, characterized in that: The shell (100) has two guard plates (110), the two guard plates (110) are respectively located on both sides of the button (300), and the two guard plates (110) extend outward from the end surface (120) of the shell (100) along the lifting direction of the button (300), and the protective cover (400) is connected to the two guard plates (110).

11. The circuit breaker according to any one of claims 1 to 9, characterized in that: The housing (100) is also provided with a connection terminal (130) at one end where the button (300) is provided, and the external wire (200) is connected to the circuit breaker via the connection terminal (130).

Images