A circuit breaker

Abstract

A circuit breaker, relating to the field of electrical technology, comprises a housing, a button, and an indicator device. The housing is provided with an opening, through which the button is accommodated within the housing. The indicator device comprises an indicator assembly and a deformable member, the indicator assembly being slidably disposed within the button, the deformable member being disposed within the housing, and the deformable member being fixedly connected to the indicator assembly. When a leakage trip fault occurs in the circuit breaker, the deformable member deforms, driving the indicator assembly to move relative to the button until the indicator assembly and the button lock, allowing the button to drive the indicator assembly through the opening and out of the housing. The circuit breaker has a leakage trip fault display function, making it easy for users to intuitively distinguish whether the circuit breaker has tripped due to overload or leakage from the outside.

Description

Technical Field

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

[0002] With the continuous acceleration of urban modernization, people's living standards and living standards are constantly improving, and there is a higher demand for electrical safety. The application of leakage circuit breakers in life is becoming more and more extensive.

[0003] To miniaturize residual current circuit breakers, existing technologies often use an integrated instantaneous and residual current release, which can significantly reduce the size of the residual current circuit breaker. However, because the instantaneous release and residual current release are combined into one, the two tripping modes are completely executed by the same component using the same motion. Therefore, there is no difference in their movement. Therefore, it is impossible to use this difference to indicate whether the circuit breaker has tripped due to overload or residual current. As a result, in actual use, it is impossible to distinguish from the outside whether the circuit breaker has tripped due to overload or residual current. This brings additional difficulties to product maintenance and poses risks to personal safety. Summary of the Invention

[0004] The object of the present invention is to provide a circuit breaker with a function of displaying a leakage trip fault, so that a user can intuitively distinguish from the outside whether the circuit breaker is tripped by overload or by leakage.

[0005] The embodiment of the present invention is achieved as follows:

[0006] An embodiment of the present invention provides a circuit breaker, comprising a housing, a button, and an indicator device. The housing is provided with an opening, and the button is accommodated within the housing through the opening. The indicator device comprises an indicator assembly and a deformable member, wherein the indicator assembly is slidably disposed within the button, the deformable member is disposed within the housing, and the deformable member is fixedly connected to the indicator assembly. When a leakage trip fault occurs in the circuit breaker, the deformable member deforms, driving the indicator assembly to move relative to the button until the indicator assembly and the button are locked, allowing the button to drive the indicator assembly through the opening and extend outside the housing. The circuit breaker has the function of displaying a leakage trip fault, making it easy for the user to intuitively distinguish from the outside whether the circuit breaker has tripped due to overload or leakage.

[0007] Optionally, the indicator assembly includes an indicator member and a push block, and the indicator member and the push block are respectively slidably arranged in the button, the indicator member is located on the side of the push block away from the deformable body, the deformable body is fixedly connected to the push block, and the deformable body deforms to drive the push block to move relative to the button, so as to push the indicator member to move relative to the button until the indicator member and the button are locked.

[0008] Optionally, a clamping portion is provided on the indicator, and a clamping groove is provided on the inner wall of the button, and the clamping portion is accommodated in the clamping groove, so that the indicator and the button are locked.

[0009] Optionally, a first elastic member is provided on the indicator member, an end of the first elastic member is connected to the shell, and the first elastic member is used to provide a reset force for the movement of the indicator member relative to the button; a second elastic member is provided on the push block, an end of the second elastic member is connected to the shell, and the second elastic member is used to provide a reset force for the movement of the push block relative to the button.

[0010] Optionally, an avoidance groove is provided on the indicator member, and a first supporting portion is provided on the push block. When the circuit breaker does not have a leakage tripping fault, the first supporting portion is accommodated in the avoidance groove. When the circuit breaker has a leakage tripping fault, the deformable body deforms to drive the first supporting portion to disengage from the avoidance groove.

[0011] Optionally, the avoidance groove includes a first wall, a second wall and a third wall connected in sequence, the first supporting portion includes a fourth wall, a fifth wall and a sixth wall connected in sequence, and there is an angle between the second wall and the third wall, and between the fifth wall and the sixth wall, respectively. The first supporting portion can move relative to the avoidance groove along the third wall under the action of the deformable body so that the first supporting portion disengages from the avoidance groove.

[0012] Optionally, a second abutting portion is further provided on a side of the indicator close to the push block, and the first abutting portion is in abutting contact with the second abutting portion, so that the push block pushes the indicator to move relative to the button.

[0013] Optionally, the shell includes a base and a cover arranged opposite to each other, and the base and the cover enclose a receiving cavity for accommodating the button and the deformable body, a receiving groove is provided on the button, the button and the base are arranged opposite to each other, and the button and the base enclose a receiving cavity for accommodating the indicating component.

[0014] Optionally, a guide groove is provided on the base, a first guide shaft is provided on the indicator, the first guide shaft is provided in the guide groove to guide the movement of the indicator relative to the button, and a second guide shaft is provided on the push block, the second guide shaft is provided in the guide groove to guide the movement of the push block relative to the button.

[0015] Optionally, a fixing groove is provided on the base, the end of the second elastic member is set in the fixing groove through a fixing shaft, and the end of the first elastic member is accommodated between the outer wall of the fixing groove and the inner wall of the button.

[0016] Optionally, the circuit breaker further includes a circuit board, which is accommodated in the shell. The deformable body is an electro-deformable body, and both ends of the electro-deformable body are electrically connected to the circuit board respectively. When a leakage trip fault occurs in the circuit breaker, the circuit board energizes both ends of the electro-deformable body to cause the electro-deformable body to deform.

[0017] The beneficial effects of the embodiments of the present invention include:

[0018] The circuit breaker includes a housing, a button, and an indicator device. The housing is provided with an opening, and the button is accommodated in the housing through the opening. The indicator device includes an indicator assembly and a deformable body. The indicator assembly is slidably disposed in the button, and the deformable body is disposed in the housing. The deformable body is fixedly connected to the indicator assembly, so that the deformable body can drive the indicator assembly to move relative to the button. When a leakage current tripping fault occurs in the circuit breaker, the deformable body deforms and drives the indicator assembly to move relative to the button until the indicator assembly and the button are locked, so that the button can drive the indicator assembly through the opening and extend outside the housing. In actual application, when an overload tripping fault occurs in the circuit breaker, only the button will extend through the opening and extend outside the housing, thereby indicating that the circuit breaker has tripped due to overload. When a leakage current tripping fault occurs in the circuit breaker, the deformable body deforms and drives the indicator assembly to move relative to the button until the indicator assembly and the button are locked, thereby allowing the button to drive the indicator assembly through the opening and extend outside the housing, thereby indicating that the circuit breaker has tripped due to leakage current. In other words, when the circuit breaker trips due to overload, the user can only see the button from the outside. When the circuit breaker trips due to leakage, the user can see both the button and the indicator component from the outside. In this way, the user can intuitively distinguish from the outside whether the circuit breaker trips due to overload or leakage, thereby ensuring product maintenance and personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 One of the structural schematic diagrams of a circuit breaker provided in an embodiment of the present invention;

[0021] Figure 2 A second structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0022] Figure 3 The third structural diagram of the circuit breaker provided in the embodiment of the present invention;

[0023] Figure 4 A fourth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0024] Figure 5 A fifth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0025] Figure 6 A sixth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0026] Figure 7 The seventh structural diagram of the circuit breaker provided in the embodiment of the present invention;

[0027] Figure 8 An eighth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0028] Figure 9 A ninth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0029] Figure 10 A tenth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0030] Figure 11 The eleventh structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0031] Figure 12 A twelfth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0032] Figure 13 The thirteenth structural diagram of the circuit breaker provided in an embodiment of the present invention;

[0033] Figure 14 A fourteenth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0034] Figure 15 The fifteenth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0035] Figure 16 A sixteenth structural diagram of a circuit breaker provided in an embodiment of the present invention;

[0036] Figure 17 This is the seventeenth structural schematic diagram of the circuit breaker provided in an embodiment of the present invention.

[0037] Icons: 100-indicator device; 10-indicator assembly; 11-indicator member; 111-avoidance groove; 1111-first wall; 1112-second wall; 1113-third wall; 112-second abutting portion; 113-clamping portion; 114-first guide shaft; 12-first elastic member; 13-push block; 131-first abutting portion; 1311-fourth wall; 1312-fifth wall; 1313-sixth wall; 132-second guide shaft; 133-fixing shaft; 14-second elastic member; 20-deformation body; 200-circuit breaker; 210-housing; 211-base; 2111-guide groove; 2112-fixing groove; 212-cover; 220-button; 221-clamping groove; 230-circuit board. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0043] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections, indirect connections through an intermediate medium, or connections within two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] Please refer to Figure 1 、 Figure 2 、 Figure 16 and Figure 17 This embodiment provides a circuit breaker 200, including a housing 210, a button 220 and an indicating device 100. The housing 210 is provided with an opening, and the button 220 is accommodated in the housing 210 through the opening. Therefore, the button 220 can extend through the opening or extend into the housing 210 to open or close the circuit breaker 200.

[0045] Please refer to Figure 3 The indicator device 100 includes an indicator assembly 10 and a deformable member 20. The indicator assembly 10 is slidably disposed within a button 220, which is disposed within a housing 210 and fixedly connected to the indicator assembly 10. When a leakage fault occurs in the circuit breaker 200, the deformable member 20 deforms, driving the indicator assembly 10 relative to the button 220 until the indicator assembly 10 and the button 220 lock, allowing the button 220 to drive the indicator assembly 10 through an opening and extend outside the housing 210. The circuit breaker 200 has a leakage fault display function, making it easy for users to intuitively distinguish whether the circuit breaker 200 has tripped due to overload or leakage.

[0046] It should be noted that, since the indicator assembly 10 is slidably disposed in the button 220, and the deformation body 20 is fixedly connected to the indicator assembly 10, the deformation body 20 can drive the indicator assembly 10 to move relative to the button 220. Figure 16 As shown, when the circuit breaker 200 has an overload trip fault, only the button 220 will extend through the opening outside the housing 210, thereby indicating that the circuit breaker 200 is overload tripped; Figure 17As shown, when a leakage trip fault occurs in the circuit breaker 200, the deformable body 20 deforms and drives the indicating assembly 10 to move relative to the button 220 until the indicating assembly 10 and the button 220 are locked, so that the button 220 can drive the indicating assembly 10 to pass through the opening and extend out of the shell 210, thereby indicating that the circuit breaker 200 is tripped by leakage.

[0047] In other words, if Figure 16 As shown, when the circuit breaker 200 is overload tripped, the user can only see the button 220 from the outside, as shown in FIG. Figure 17 As shown, when the circuit breaker 200 is tripped due to leakage, the user can see the button 220 and the indicator assembly 10 at the same time from the outside. In this way, the user can intuitively distinguish from the outside whether the circuit breaker 200 is tripped due to overload or leakage, thereby ensuring product maintenance and personal safety.

[0048] It is worth noting that the button 220 may be provided with an opening on a side away from the deformation body 20 to facilitate the user to observe whether the indicator assembly 10 is extended out of the housing 210 along with the button 220. Furthermore, the button 220 may be provided with a transparent baffle at this opening to prevent dust and impurities from entering the button 220 and affecting the normal use of the circuit breaker 200.

[0049] Regarding the material of the deformation body 20 , those skilled in the art should be able to reasonably design and select it according to actual conditions. No specific restrictions are imposed here. It is only necessary that the deformation body 20 can be deformed to drive the indicating component 10 to move relative to the button 220 .

[0050] As described above, the circuit breaker 200 includes a housing 210, a button 220, and an indicating device 100. The housing 210 is provided with an opening, and the button 220 is accommodated in the housing 210 through the opening. The indicating device 100 includes an indicating assembly 10 and a deformable body 20. The indicating assembly 10 is slidably disposed in the button 220. The deformable body 20 is disposed in the housing 210. The deformable body 20 is fixedly connected to the indicating assembly 10. Therefore, the deformable body 20 can drive the indicating assembly 10 to move relative to the button 220. When a leakage trip fault occurs in the circuit breaker 200, the deformable body 20 deforms and drives the indicating assembly 10 to move relative to the button 220 until the indicating assembly 10 and the button 220 are locked, so that the button 220 can drive the indicating assembly 10 to extend through the opening outside the housing 210. In actual use, when the circuit breaker 200 trips due to an overload fault, only the button 220 will extend through the opening and out of the housing 210, thereby indicating that the circuit breaker 200 has tripped due to an overload fault. When the circuit breaker 200 trips due to a leakage fault, the deformation body 20 deforms, driving the indicator assembly 10 to move relative to the button 220 until the indicator assembly 10 and the button 220 are locked, thereby allowing the button 220 to drive the indicator assembly 10 through the opening and out of the housing 210, thereby indicating that the circuit breaker 200 has tripped due to a leakage fault. In other words, when the circuit breaker 200 trips due to an overload fault, the user can only see the button 220 from the outside. When the circuit breaker 200 trips due to a leakage fault, the user can see both the button 220 and the indicator assembly 10 from the outside. In this way, the user can intuitively distinguish from the outside whether the circuit breaker 200 has tripped due to an overload fault or a leakage fault, thereby ensuring product maintenance and personal safety.

[0051] It is worth noting that the deformation of the above-mentioned deformation body 20 drives the indicator assembly 10 to move relative to the button 220 until the indicator assembly 10 and the button 220 are locked, so that the button 220 can drive the indicator assembly 10 through the opening and extend outside the shell 210. The "drive" here can be the action of the deformation body 20 deforming to push the indicator assembly 10 toward the side close to the opening, or it can be the action of the deformation body 20 deforming to pull the indicator assembly 10 toward the side away from the opening. When "drive" is the action of the deformation body 20 deforming to push the indicator assembly 10 toward the side close to the opening, the indicator assembly 10 can naturally pass through the opening and extend outside the shell 210. Therefore, the specific structure of the indicator assembly 10 at this time is not described in detail here. Those skilled in the art should be able to make reasonable designs and choices based on actual conditions.

[0052] When "driving" is the action of the deformation body 20 deforming and pulling the indicator component 10 toward the side away from the opening, how can the indicator component 10 pass through the opening and extend out of the housing 210? Please refer to Figure 4 and Figure 5In this embodiment, the indicating assembly 10 includes an indicating member 11 and a pushing block 13. The indicating member 11 and the pushing block 13 are respectively slidably arranged in the button 220. The indicating member 11 is located on the side of the pushing block 13 away from the deformable body 20. The deformable body 20 is fixedly connected to the pushing block 13. The deformation of the deformable body 20 drives the pushing block 13 to move relative to the button 220, thereby pushing the indicating member 11 to move relative to the button 220 until the indicating member 11 and the button 220 are locked.

[0053] It should be noted that since the indicator assembly 10 includes the indicator member 11 and the push block 13, the indicator member 11 is located on the side of the push block 13 away from the deformable member 20, and the deformable member 20 is fixedly connected to the push block 13, the deformable member 20 can drive the push block 13 to move relative to the button 220, thereby driving the indicator member 11 to move relative to the button 220 via the push block 13. Furthermore, since the indicator member 11 and the push block 13 are respectively slidably disposed within the button 220, the indicator member 11 can move relative to the button 220, and the push block 13 can also move relative to the button 220. In this way, the deformable member 20 can deform to pull the push block 13 relative to the button 220 toward the side away from the opening, thereby pushing the indicator member 11 relative to the button 220 via the push block 13 until the indicator member 11 and the button 220 are locked, allowing the indicator member 11 to pass through the opening and extend outside the housing 210 along with the button 220.

[0054] Please refer to Figure 6 In this embodiment, the indicator 11 is provided with a clamping portion 113, please refer to Figure 8 The inner wall of the button 220 is provided with a snap-fitting groove 221, and the snap-fitting portion 113 is received in the snap-fitting groove 221, so that the indicator 11 is snap-fitted to the button 220 and locked. In this way, the indicator 11 can move along with the movement of the button 220, so that the indicator 11 and the button 220 can pass through the opening and extend out of the housing 210.

[0055] In order to reset the above-mentioned movement process of "the indicator 11 moves relative to the button 220 until the indicator 11 and the button 220 are locked", as shown in FIG. Figure 6 As shown, in this embodiment, a first elastic member 12 is provided on the indicator member 11, and the end of the first elastic member 12 is connected to the shell 210. The first elastic member 12 is used to provide a reset force for the movement of the indicator member 11 relative to the button 220, so that the indicator member 11 can move relative to the button 220 under the action of the first elastic member 12 until the indicator member 11 and the button 220 are unlocked.

[0056] In order to reset the above-mentioned "movement of the push block 13 relative to the button 220 toward the side away from the opening", please refer to Figure 7In this embodiment, a second elastic member 14 is provided on the push block 13, and the end of the second elastic member 14 is connected to the shell 210. The second elastic member 14 is used to provide a reset force for the movement of the push block 13 relative to the button 220, so that the push block 13 can move relative to the button 220 toward the side close to the opening under the action of the second elastic member 14.

[0057] It should be noted that the indicator member 11 is provided with a first elastic member 12. The first elastic member 12 and the indicator member 11 may be connected, but the first elastic member 12 and the indicator member 11 are two different parts (in this case, the first elastic member 12 may be a spring, a torsion spring, or a tension spring, etc.). Alternatively, the first elastic member 12 and the indicator member 11 may be integrally formed, that is, the first elastic member 12 and the indicator member 11 are one part (in this case, the first elastic member 12 may be made into a slender cantilever structure so that it functions as an elastic member). Similarly, the push block 13 is provided with a second elastic member 14. The second elastic member 14 and the push block 13 may be connected, but the second elastic member 14 and the push block 13 are two different parts (in this case, the second elastic member 14 may be a spring, a torsion spring, or a tension spring, etc.). Alternatively, the second elastic member 14 and the push block 13 may be integrally formed, that is, the second elastic member 14 and the push block 13 are one part (in this case, the second elastic member 14 may be made into a slender cantilever structure so that it functions as an elastic member). It should be noted that the shapes of the first elastic member 12 and the second elastic member 14 in the drawings are merely illustrative and are not intended to limit the actual shapes of the first elastic member 12 and the second elastic member 14 .

[0058] In this embodiment, if Figure 6 As shown, the indicator 11 is provided with an avoidance groove 111. Figure 7 As shown, a first abutting portion 131 is provided on the push block 13. When the circuit breaker 200 does not have a leakage tripping fault, the first abutting portion 131 is accommodated in the avoidance groove 111. When the circuit breaker 200 has a leakage tripping fault, the deformable body 20 deforms to drive the first abutting portion 131 to disengage from the avoidance groove 111.

[0059] It should be noted that if Figure 4 As shown, when the circuit breaker 200 does not have a leakage trip fault, the first abutting portion 131 is accommodated in the avoidance groove 111, so that the indicator 11 and the push block 13 are engaged. In this way, the push block 13 can ensure that the indicator 11 does not move with the movement of the button 220, so as to avoid the indicator 11 extending out of the housing 210 through the opening along with the button 220 in the case of a non-leakage trip fault, thereby causing the user to make a misjudgment, such as Figure 5As shown, when a leakage trip fault occurs in the circuit breaker 200, the deformation body 20 deforms to drive the first abutting portion 131 to disengage from the avoidance groove 111, so that the indicator 11 and the push block 13 are released from the engagement. In this way, the push block 13 can release the limiting effect on the indicator 11, so that the indicator 11 can move with the movement of the button 220, thereby further improving the accuracy of the leakage trip indication.

[0060] Specifically, in this embodiment, Figure 6 As shown, the avoidance groove 111 includes a first wall 1111, a second wall 1112 and a third wall 1113 connected in sequence. Figure 7 As shown, the first supporting portion 131 includes a fourth wall 1311, a fifth wall 1312 and a sixth wall 1313 connected in sequence, and an angle is formed between the second wall 1112 and the third wall 1113 and between the fifth wall 1312 and the sixth wall 1313, as shown in FIG. Figure 5 As shown, the first abutting portion 131 can move relative to the avoidance groove 111 along the third wall surface 1113 under the action of the deforming body 20 , so that the first abutting portion 131 is separated from the avoidance groove 111 .

[0061] Regarding the actual values of the angles between the second wall 1112 and the third wall 1113, and between the fifth wall 1312 and the sixth wall 1313, those skilled in the art should be able to reasonably design and select them according to actual conditions, and no specific limitations are imposed herein. For example, the angles may be 110°, 120°, 130°, 135°, or 140°, etc.

[0062] like Figure 5 and Figure 6 As shown, in this embodiment, a second abutting portion 112 is further provided on the side of the indicator 11 close to the push block 13, and the first abutting portion 131 is in abutment with the second abutting portion 112, so that the push block 13 pushes the indicator 11 to move relative to the button 220, thereby making it easier for the push block 13 to push the indicator 11 to move relative to the button 220 to a preset position and lock with the button 220.

[0063] Please refer to Figures 9 to 17 In this embodiment, the shell 210 includes a base 211 and a cover 212 that are arranged opposite to each other, and the base 211 and the cover 212 enclose a receiving cavity for accommodating the button 220 and the deformation body 20. A receiving groove is provided on the button 220. The button 220 and the base 211 are arranged opposite to each other, and the button 220 and the base 211 enclose a receiving cavity for accommodating the indication component 10.

[0064] Among them, a guide groove 2111 is provided on the base 211, and a first guide shaft 114 is provided on the indicator 11, and the first guide shaft 114 is provided in the guide groove 2111 to guide the movement of the indicator 11 relative to the button 220. A second guide shaft 132 is provided on the push block 13, and the second guide shaft 132 is provided in the guide groove 2111 to guide the movement of the push block 13 relative to the button 220, so that the guide groove 2111 ensures that the movement path of the indicator 11 and the push block 13 relative to the button 220 is always on the preset path, thereby further improving the stability of the movement of the indicator 11 and the push block 13 relative to the button 220.

[0065] like Figure 9 As shown, in this embodiment, a fixing groove 2112 is provided on the base 211. Figure 2 、 Figure 10 and Figure 12 As shown, the end of the second elastic member 14 is arranged in the fixed groove 2112 through the fixed shaft 133 to ensure that the push block 13 can be smoothly reset under the action of the second elastic member 14, and the end of the first elastic member 12 is accommodated between the outer wall of the fixed groove 2112 and the inner wall of the button 220 to ensure that the indicator 11 can be smoothly reset under the action of the first elastic member 12.

[0066] like Figures 1 to 3 As shown, in this embodiment, the circuit breaker 200 further includes a circuit board 230, which is accommodated in the housing 210. The deformable body 20 is an electrodeformable body 20, and both ends of the electrodeformable body 20 are electrically connected to the circuit board 230. When a leakage trip fault occurs in the circuit breaker 200, the circuit board 230 energizes both ends of the electrodeformable body 20 to cause the electrodeformable body 20 to deform.

[0067] It should be noted that the electrodeformable member 20 herein refers to a material that can spontaneously contract when powered or heated, and then return to its pre-contracted length after power is removed or cooled due to external forces or its own properties. Thus, when circuit board 230 applies power to both ends of the electrodeformable member 20, the electrodeformable member 20 deforms, driving the indicator assembly 10. After power is removed, the electrodeformable member 20 returns to its pre-deformed length, thereby facilitating movement of the indicator assembly 10 upon the next leakage trip.

[0068] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A circuit breaker, characterized in that: The invention comprises a housing, a button and an indicator device, wherein the housing is provided with an opening, the button is accommodated in the housing through the opening, the indicator device comprises an indicator assembly and a deformable body, the indicator assembly is slidably disposed in the button, the deformable body is disposed in the housing, and the deformable body is fixedly connected to the indicator assembly; When an overload trip fault occurs in the circuit breaker, the button extends through the opening to the outside of the shell; when a leakage trip fault occurs in the circuit breaker, the deformable body deforms to drive the indicating assembly to move relative to the button until the indicating assembly and the button are locked, so that the button can drive the indicating assembly to extend through the opening to the outside of the shell.

2. The circuit breaker according to claim 1, wherein: The indicator assembly includes an indicator member and a push block, which are respectively slidably arranged in the button. The indicator member is located on a side of the push block away from the deformable body. The deformable body is fixedly connected to the push block. The deformation of the deformable body drives the push block to move relative to the button, thereby pushing the indicator member to move relative to the button until the indicator member and the button are locked.

3. The circuit breaker according to claim 2, wherein: The indicator is provided with a clamping portion, and the inner wall of the button is provided with a clamping groove, and the clamping portion is accommodated in the clamping groove so that the indicator is locked with the button.

4. The circuit breaker according to claim 2, wherein: The indicator is provided with a first elastic member, an end of the first elastic member is connected to the housing, and the first elastic member is used to provide a reset force for the movement of the indicator relative to the button; The push block is provided with a second elastic member, an end of the second elastic member is connected to the housing, and the second elastic member is used to provide a reset force for the push block to move relative to the button.

5. The circuit breaker according to claim 2, wherein: An avoidance groove is provided on the indicator member, and a first supporting portion is provided on the push block. When the circuit breaker does not have a leakage tripping fault, the first supporting portion is accommodated in the avoidance groove. When the circuit breaker has a leakage tripping fault, the deformable body deforms to drive the first supporting portion to disengage from the avoidance groove.

6. The circuit breaker according to claim 5, characterized in that The avoidance groove includes a first wall surface, a second wall surface and a third wall surface connected in sequence, the first supporting portion includes a fourth wall surface, a fifth wall surface and a sixth wall surface connected in sequence, and there is an angle between the second wall surface and the third wall surface, and between the fifth wall surface and the sixth wall surface respectively. The first supporting portion can move relative to the avoidance groove along the third wall surface under the action of the deformable body so that the first supporting portion disengages from the avoidance groove.

7. The circuit breaker according to claim 5, characterized in that A second abutting portion is further provided on a side of the indicator close to the push block, and the first abutting portion is in abutting contact with the second abutting portion, so that the push block pushes the indicator to move relative to the button.

8. The circuit breaker according to claim 4, wherein: The shell includes a base and a cover arranged opposite to each other, and the base and the cover enclose a receiving cavity for accommodating the button and the deformable body. The button is provided with a receiving groove, and the button and the base are arranged opposite to each other, and the button and the base enclose a receiving cavity for accommodating the indicating component.

9. The circuit breaker according to claim 8, characterized in that A guide groove is provided on the base, a first guide shaft is provided on the indicator, the first guide shaft is provided in the guide groove to guide the movement of the indicator relative to the button, and a second guide shaft is provided on the push block, the second guide shaft is provided in the guide groove to guide the movement of the push block relative to the button.

10. The circuit breaker according to claim 8, wherein: A fixing groove is provided on the base, the end of the second elastic member is arranged in the fixing groove through a fixing shaft, and the end of the first elastic member is accommodated between the outer wall of the fixing groove and the inner wall of the button.

11. The circuit breaker according to claim 1, wherein: The circuit breaker also includes a circuit board, which is accommodated in the housing. The deformable body is an electrodeformable body, and both ends of the electrodeformable body are electrically connected to the circuit board. When a leakage trip fault occurs in the circuit breaker, the circuit board energizes both ends of the electrodeformable body to cause the electrodeformable body to deform.

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