Overload indication key switch

Abstract

The utility model discloses an overload indication key switch, and belongs to the technical field of key switches. The overload indication key switch comprises a key switch which is provided with a movable contact piece and a static contact piece which are matched with each other; the bimetallic strip is separably connected between the movable contact piece and the static contact piece; and the overload indicating lamp is arranged in the key switch, a first power supply end of the overload indicating lamp is electrically connected with the static contact piece, a second power supply end of the overload indicating lamp is detachably connected with the bimetallic strip, and the second power supply end is electrically connected with the bimetallic strip in an overload deformation state of the bimetallic strip. The overload indication key switch provided by the utility model can reliably indicate the overload state, and is convenient and safe to use.

Description

Technical Field

[0001] This application belongs to the field of push button switch technology, and in particular relates to an overload indicator push button switch. Background Technology

[0002] A push-button indicator switch equipped with an overload protection mechanism can disconnect the electrical connection of the push-button switch when the switching circuit is in an overload state. Typically, a push-button indicator switch contains a matching moving and stationary contact and a bimetallic strip with overload deformation capability. The bimetallic strip is connected between the free ends of the stationary and moving contacts; when the push-button indicator switch is overloaded, the bimetallic strip will deform to break the conductive path.

[0003] However, when the bimetallic strip is deformed and the conductive path is broken, the push-button indicator switch can only show an overall power-off state. It is unclear whether the power failure is due to overload or a simple power outage. As a result, the push-button indicator switch lacks reliable status indication, making it less convenient to use and posing a certain risk of electric shock, especially under overload conditions. Summary of the Invention

[0004] This application provides an overload indicator push-button switch, aiming to at least partially solve the technical problem that push-button switches equipped with overload protection functions suffer from unsatisfactory reliability and ease of use in indicating overload status, posing certain safety risks. Therefore,

[0005] One aspect of this application provides an overload indicator push-button switch, comprising:

[0006] The push-button switch is equipped with matching moving and stationary contacts;

[0007] A bimetallic strip is detachably connected between the moving contact and the stationary contact;

[0008] A reset element is disposed within the push button switch, and the reset element is disposed opposite to the bimetallic strip, so as to drive the bimetallic strip to deform and reset through the reset element;

[0009] An overload indicator light is installed inside the push-button switch. The first power terminal of the overload indicator light is configured as a neutral wire connector, and the second power terminal is detachably connected to the bimetallic strip. Under the overload deformation state of the bimetallic strip, the second power terminal is electrically connected to the bimetallic strip.

[0010] In some embodiments, the overload indicator push button switch further includes a first conductive spring, a first end of which is electrically connected to the second power supply terminal, and a second end of which is detachably connected to the bimetallic strip.

[0011] In some embodiments, the housing is provided with a support portion, and the two ends of the first conductive spring abut against the support portion and the second power supply terminal, respectively.

[0012] In some embodiments, the deformation displacement direction of the first conductive spring is set along the deformation displacement direction of the bimetallic strip.

[0013] In some embodiments, the first conductive spring is a helical spring, and the free end of the bimetallic strip is detachably connected to the second end of the first conductive spring.

[0014] In some embodiments, a limiting hole is provided on the housing, and the first conductive spring is disposed in the limiting hole.

[0015] In some embodiments, the overload indicator light and the double gold sheet are located on both sides of the limiting hole.

[0016] In some embodiments, the push-button switch includes:

[0017] The housing accommodates and fixes the moving contact, the bimetallic strip, and the stationary contact, wherein the first end of the bimetallic strip is electrically connected to the stationary contact, and the second end of the bimetallic strip is detachably connected to the moving contact and the second power supply terminal of the overload indicator light.

[0018] A ratchet button mechanism is disposed within the housing, and the ratchet button mechanism abuts against the moving contact piece.

[0019] In some embodiments, the reset element includes:

[0020] A rotating shaft is rotatably mounted on the housing;

[0021] An overlapping arm is disposed on the radial side of the rotating shaft, and the overlapping arm is connected to the free end of the moving contact piece;

[0022] A reset arm is disposed on the radial side of the rotating shaft, and the reset arm is disposed opposite to the second end of the reset wall and the bimetallic strip. When the free end of the moving contact piece moves away from the bimetallic strip, it pushes against the overlapping arm to drive the rotating shaft to rotate, thereby causing the reset arm to push against and reset the second end of the bimetallic strip.

[0023] In some embodiments, the overload indicator push button switch further includes an on / off indicator light disposed on the housing, with one end of the on / off indicator light connected to the moving contact piece and the other end configured as a neutral wire connection terminal.

[0024] The embodiments of this application have at least the following beneficial effects:

[0025] The overload indicator push-button switch provided in this application includes a push-button switch body, a bimetallic strip, a reset element, and an overload indicator light. The push-button switch is equipped with a cooperating moving contact and a stationary contact. The bimetallic strip is detachably connected between the moving and stationary contacts. In case of overload, the bimetallic strip deforms under heat, disconnecting the electrical connection between the moving and stationary contacts and achieving overload power-off protection. Simultaneously, a reset element is provided within the push-button switch. After eliminating the overload factor, the deformed bimetallic strip can be reset by operating the reset element, thereby restoring the switch's conductivity. To intuitively reflect the current overload status, an overload indicator light is provided within the push-button switch. One power terminal of the overload indicator light is electrically connected to the stationary contact, and the other power terminal cooperates with the bimetallic strip. When the bimetallic strip deforms under overload, it contacts and conducts with the other power terminal of the overload indicator light, connecting the indicator light to the live and neutral wires of the power supply, illuminating the overload indicator light, and intuitively indicating the overload status. This reduces the safety risks during user operation and improves ease of use. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the overload indicator push button switch in an embodiment of this application is shown;

[0028] Figure 2 It shows Figure 1 A schematic diagram of the energized state of the overload indicator push button switch in the diagram;

[0029] Figure 3 It shows Figure 2 The main view of the overload indicator push button switch in the middle;

[0030] Figure 4 It shows Figure 1 A schematic diagram of the overload indicator push-button switch in the power-off state.

[0031] Figure 5 It shows Figure 4 The main view of the overload indicator push button switch in the middle;

[0032] Figure 6 It shows Figure 1 A schematic diagram of the overload state structure of the overload indicator push button switch in the middle;

[0033] Figure 7 It shows Figure 6The main view of the overload indicator push button switch in the middle;

[0034] Figure 8 It shows Figure 1 A three-dimensional schematic diagram of the assembly state of the overload indicator push button switch.

[0035] Figure label:

[0036] 1-Push button switch, 10-Housing, 101-Support part, 102-Limiting hole, 103-Guide post, 104-Neutral wire terminal, 11-Moving contact, 111-Pressing end, 12-Stationary contact, 13-Ratchet button mechanism, 131-Large ratchet, 132-Small ratchet, 133-Ratchet spring;

[0037] 2-Bimetallic strip, 21-Window, 22-Extension arm, 221-Contact connection part, 23-Free end;

[0038] 3-Reset component, 31-Rotating shaft, 32-Overlapping arm, 33-Reset component;

[0039] 4-Overload indicator light, 41-First power supply terminal, 42-Second power supply terminal, 43-First conductive spring;

[0040] 5-On / off indicator light, 51-Second conductive spring, 52-Press housing. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0043] This application is described below with reference to the accompanying drawings and specific embodiments:

[0044] A push-button switch is based on a ratchet button mechanism and its cooperating moving and stationary contacts. Pressing the ratchet button mechanism drives the moving contact to connect or disconnect from the stationary contact, thus switching the circuit on or off. To improve the safety performance of the push-button switch, a bimetallic strip can be detachably connected between the moving and stationary contacts. In the event of an overload in the electrical circuit, the bimetallic strip overheats and deforms, breaking the electrical connection between the moving and stationary contacts, thereby achieving circuit breaker protection. However, there is no external visual indication of an overload circuit breaker, making it unclear whether it is a power outage or an overload, which makes the use of the push-button switch inconvenient. Furthermore, operating the push-button switch in an overload state can increase safety risks to some extent.

[0045] Therefore, this application provides an overload indicator push button switch, which aims to improve the overload indication capability, ease of use, and safety of push button switches with overload protection function to a certain extent.

[0046] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 6 , Figure 7 and Figure 8 This application provides an overload indicator push button switch, which improves the overload indication capability of the push button switch by setting up functional mechanisms such as an overload indicator light.

[0047] Specifically, the overload indicator button switch includes a button switch 1, a bimetallic strip 2, a reset element 3, and an overload indicator light 4.

[0048] The push-button switch 1 has a moving contact 11 and a stationary contact 12 that cooperate with each other. The moving contact 11 and the stationary contact 12 are electrically connected between upstream and downstream devices in the circuit, such as between a load and a power source. That is, the moving contact 11 can be electrically connected to the downstream load device, and the stationary contact 12 can be electrically connected to the upstream power source. Thus, the connection or disconnection of the load power supply can be achieved by connecting or disconnecting the moving contact 11 and the stationary contact 12.

[0049] The bimetallic strip 2 is formed by pressing together two metal strips with different thermal deformation coefficients. Under heat, their deformation amplitudes differ, resulting in overall tensile and bending deformation. Especially under overload conditions, when the current is high, the bimetallic strip 2 will exhibit significant bending deformation. In this embodiment, the bimetallic strip 2 is detachably connected between the moving contact 11 and the stationary contact 12, realizing an openable conductive switch structure; and under overload conditions, the significant deformation of the bimetallic strip 2 can disconnect the electrical connection between the moving contact 11 and the stationary contact 12.

[0050] The reset element 3 is disposed on the push button switch 1 and is used to push the bimetallic strip 2 to reset after it has been deformed and displaced due to overload. After eliminating the overload factor, the reset element 3 can be operated to restore the conductive contact position of the moving contact 11 and the stationary contact 12, so as to ensure the reliability of the function of the push button switch 1.

[0051] The overload indicator light 4 is an electrical component with a first power supply terminal 41 and a second power supply terminal 42. The first power supply terminal 41 is configured as a neutral wire connector for connecting an external neutral wire. The second power supply terminal 42 is detachably connected to the bimetallic strip 2. Under normal conditions, i.e., in the non-overload state, the second power supply terminal 42 is detached from the bimetallic strip 2 and is not electrically connected. Only when the bimetallic strip 2 is overloaded and deformed to a certain extent will it abut against the second power supply terminal 42, establishing an electrical connection between the bimetallic strip 2 and the overload indicator light 4, thus illuminating the overload indicator light 4. Generally, the bimetallic strip 2 can be configured as an input terminal, i.e., the end connected to the power supply, which is always energized, while the moving contact 11 is an output terminal, the end connected to the load.

[0052] It is worth noting that the overload deformation amplitude of the bimetallic strip 2 is related to the magnitude of the overload current. In order to ensure that the bimetallic strip 2 can stably deform and shift under overload conditions and stably abut against the second power supply terminal 42, the position of the second power supply terminal 42 can be matched with the deformation and shift position of the bimetallic strip 2.

[0053] The overload indicator push-button switch provided in this application includes a push-button switch body, a bimetallic strip, a reset element, and an overload indicator light. The push-button switch is equipped with a cooperating moving contact and a stationary contact. The bimetallic strip is detachably connected between the moving and stationary contacts. In case of overload, the bimetallic strip deforms under heat, disconnecting the electrical connection between the moving and stationary contacts and achieving overload power-off protection. Simultaneously, a reset element is provided within the push-button switch. After eliminating the overload factor, the deformed bimetallic strip can be reset by operating the reset element, thereby restoring the switch's conductivity. To intuitively reflect the current overload status, an overload indicator light is provided within the push-button switch. One power terminal of the overload indicator light is electrically connected to the stationary contact, and the other power terminal cooperates with the bimetallic strip. When the bimetallic strip deforms under overload, it contacts and conducts through the other power terminal of the overload indicator light, connecting the overload indicator light to the live and neutral wires of the power supply, illuminating the overload indicator light, and intuitively indicating the overload status. This reduces the safety risks during user operation and improves ease of use.

[0054] In some embodiments, the push button switch 1 may include a housing 10, the aforementioned moving contact 11, the aforementioned stationary contact 12, and a ratchet button mechanism 13.

[0055] The housing 10 has an internal cavity to accommodate the moving contact 11 and the stationary contact 12, and the housing 10 has a matching fixing structure, such as a slot. The stationary contact 12 is connected to the first end of the bimetallic strip 2; the bimetallic strip 2 and the moving contact 11 cooperate to maintain a separable connection, and can be specifically configured such that the moving contact 11 can approach or move away from the bimetallic strip 2.

[0056] The ratchet button mechanism 13 can be disposed on the housing 10, and the pressing end of the ratchet button mechanism 13 is disposed on the outside of the housing 10. The output end of the ratchet button mechanism 13 abuts against the movable contact piece 11, thereby driving the movable contact piece 11 to move closer to or away from the bimetallic strip 2 by pressing the ratchet button mechanism 13, and maintaining the positional state of the movable contact piece 11 and the bimetallic strip 2.

[0057] In some embodiments, the ratchet button mechanism 13 may include a large ratchet 131, a small ratchet 132, and a ratchet spring 133 nested in sequence. The large ratchet 131 meshes with the small ratchet 132. The large ratchet 131 is embedded in a through hole in the housing 10 and remains circumferentially stationary. The ratchet spring 133 abuts against the movable contact piece 11. Thus, by pressing the large ratchet 131, the small ratchet 132 is driven to rotate, and the axial position of the small ratchet 132 is locked, thereby locking the position of the movable contact piece 11. Pressing the large ratchet 131 again can drive the small ratchet 132 and the movable contact piece 11 to reset.

[0058] In some embodiments, the overload indicator light 4 may be disposed on the housing 10 or exposed on the outside of the housing 10 for easy visual observation.

[0059] Accordingly, a window can be opened on the housing 10 to facilitate the connection of the power supply terminal of the overload indicator 4 to the bimetallic strip 2 or the neutral wire.

[0060] In some embodiments, considering the overload deformation and displacement characteristics of the bimetallic strip 2, in order to maintain the reliability of its connection with the second power supply terminal 42 of the overload indicator 4, a first conductive spring 43 can be connected between the second power supply terminal 42 and the position of the bimetallic strip 2 after overload deformation. Thus, after the bimetallic strip 2 is overloaded and deformed into place, a certain elastic contact force can be maintained by the first conductive spring 43, reducing the influence of vibration and other disturbance factors on the contact state and improving the reliability of the electrical connection.

[0061] The first conductive spring 43 can be disposed between the second power supply terminal 42 and the overload deformation displacement position of the bimetallic strip 2. When the bimetallic strip 2 is overloaded and deformed to the desired position, the bimetallic strip 2 pushes against the first conductive spring 43, so that the first conductive spring 43 is stably abutted between the second power supply terminal 42 and the bimetallic strip 2.

[0062] Generally, the first end of the first conductive spring 43 abuts against the second power supply end 42, and the second end abuts against the bimetallic strip 2.

[0063] In some embodiments, in order to improve the positional stability of the first conductive spring 43 and the reliability of its connection with the second power supply terminal 42 and the bimetallic strip 2, a support portion 101 may be provided on the housing 10, and the first conductive spring 43 may be disposed on the support portion 101 to maintain positional stability, reduce displacement amplitude, and thus ensure the reliability of the alignment electrical connection.

[0064] Generally, the two ends of the first conductive spring 43 can be directly abutted against the support part 101 and the second power supply end 42 respectively to maintain a stable electrical connection between the first conductive spring 43 and the second power supply end 42.

[0065] In some embodiments, the deformation displacement direction of the first conductive spring 43 can be set along the overload deformation displacement direction of the bimetallic strip 2, so that the bimetallic strip 2 can stably abut against the first conductive spring 43 during the overload deformation displacement process, and maintain the stability of the electrical connection.

[0066] In some embodiments, the first conductive spring 43 can be configured as a helical spring capable of axial compression deformation. The two ends of the first conductive spring 43 can be connected to the second power supply terminal 42 and the free end of the bimetallic strip 2, respectively.

[0067] In some embodiments, in order to maintain the position of the first conductive spring 43, a limiting hole 102 may be provided on the housing 10 of the push button switch 10, and the first conductive spring 43 may be disposed in the limiting hole 102 to limit the radial displacement amplitude.

[0068] In some embodiments, the support portion 101 may be configured as a flange within one side port of the limiting hole 102, which partially abuts against the end of the first conductive spring 43.

[0069] In some embodiments, the overload indicator light 4 and the bimetallic strip 2 can be disposed on both sides of the limiting hole 102, thereby abutting against the first conductive spring 43 from both sides.

[0070] In some embodiments, in order to realize the overload reset function of the push button switch 1, the reset component 3 may include a rotating shaft 31, a connecting arm 32, and a reset arm 33.

[0071] The rotating shaft 31 is rotatably disposed within the housing 10. The overlapping arm 32 and the reset arm 33 are respectively disposed on the radial side of the rotating shaft 31 and can rotate coaxially with the rotating shaft 31. The overlapping arm 32 is connected to the pressing end 111 of the movable contact piece 11 and can move with the movable contact piece 11, thereby pushing the rotating shaft 31 to rotate, which in turn drives the reset arm 33 to rotate. The reset arm 33 is disposed opposite to the second end of the bimetallic strip 2, thereby pushing and resetting the second end of the bimetallic strip 2.

[0072] The bimetallic sheet 2 has various structural forms. In this application, the bimetallic sheet 2 has a window 21 in the middle, and an extension arm 22 extending into the window 21 is provided on the inner wall of one side of the window 21. The end of the extension arm 22 is a contact electrical connection part 221 that cooperates with the moving contact piece 11.

[0073] The side where the extension arm 22 is located is the free end 23 of the bimetallic sheet 2, that is, the moving part under overload deformation.

[0074] In some embodiments, in order to facilitate indicating the on / off state of the push button switch 1 under normal working conditions, the overload indicator push button switch may further include an on / off indicator light 5, which is disposed on the housing, and one end of the on / off indicator light 5 is connected to the moving contact 11 and connected to the live wire, and the other end is configured as a neutral wire connection terminal and connected to the neutral wire.

[0075] Thus, when the moving contact 11 and the stationary contact 12 are closed, the on / off indicator light 5 can be lit to indicate that the switch is closed; when the moving contact 11 and the stationary contact 12 are open, the on / off indicator light 5 is turned off to indicate that the switch is open.

[0076] In some embodiments, the two ends of the on / off indicator light 5 can respectively abut against the moving contact 11 and the neutral wire through two second conductive springs 51.

[0077] In some embodiments, the push-button switch 1 may also be provided with a neutral wire terminal 104, which serves as a medium for connecting the first power supply terminal 41 to the neutral wire.

[0078] In some embodiments, the on / off indicator light 5 may be configured with a pressing housing 52 for mounting and fixing the on / off indicator light 5, and the pressing housing 52 may be sleeved on the guide post 103 on the housing 10.

[0079] Generally, the guiding direction of the guide post 103 can be configured to be along the pressing direction of the ratchet button mechanism 13.

[0080] The pressing housing 52 can be abutted against the pressing end of the ratchet button mechanism 13.

[0081] In some embodiments, the housing 10 may be configured as a snap-fit ​​top cover and a base.

[0082] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0084] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0085] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0086] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0088] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0089] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An overload indicator push-button switch, characterized in that, include: The push-button switch is equipped with matching moving and stationary contacts; A bimetallic strip is detachably connected between the moving contact and the stationary contact; A reset element is disposed within the push button switch, and the reset element is disposed opposite to the bimetallic strip, so as to drive the bimetallic strip to deform and reset through the reset element; An overload indicator light is installed inside the push-button switch. The first power terminal of the overload indicator light is configured as a neutral wire connector, and the second power terminal is detachably connected to the bimetallic strip. Under the overload deformation state of the bimetallic strip, the second power terminal is electrically connected to the bimetallic strip. The housing accommodates and fixes the moving contact, the bimetallic strip, and the stationary contact, wherein the first end of the bimetallic strip is electrically connected to the stationary contact, and the second end of the bimetallic strip is detachably connected to the moving contact and the second power supply terminal of the overload indicator.

2. The overload indicator push-button switch as described in claim 1, characterized in that, The overload indicator push button switch also includes a first conductive spring, the first end of which is electrically connected to the second power supply terminal, and the second end of which is detachably connected to the bimetallic strip.

3. The overload indicator push-button switch as described in claim 2, characterized in that, The housing is provided with a support portion, and the two ends of the first conductive spring abut against the support portion and the second power supply end, respectively.

4. The overload indicator push-button switch as described in claim 2, characterized in that, The deformation displacement direction of the first conductive spring is set along the deformation displacement direction of the bimetallic strip.

5. The overload indicator push-button switch as described in claim 4, characterized in that, The first conductive spring is a helical spring, and the free end of the bimetallic strip is detachably connected to the second end of the first conductive spring.

6. The overload indicator push-button switch as described in claim 5, characterized in that, The housing is provided with a limiting hole, and the first conductive spring is disposed in the limiting hole.

7. The overload indicator push-button switch as described in claim 6, characterized in that, The overload indicator light and the bimetallic strip are located on both sides of the limiting hole, respectively.

8. The overload indicator push-button switch as described in any one of claims 1 to 7, characterized in that, The push-button switch includes: A ratchet button mechanism is disposed within the housing, and the ratchet button mechanism abuts against the moving contact piece.

9. The overload indicator push-button switch as described in claim 8, characterized in that, The reset component includes: A rotating shaft is rotatably mounted on the housing; An overlapping arm is disposed on the radial side of the rotating shaft, and the overlapping arm is connected to the free end of the moving contact piece; A reset arm is disposed on the radial side of the rotating shaft, and the reset arm is disposed opposite to the second end of the bimetallic strip. When the free end of the moving contact piece moves away from the bimetallic strip, it pushes against the overlapping arm to drive the rotating shaft to rotate, thereby causing the reset arm to push against and reset the second end of the bimetallic strip.

10. The overload indicator push-button switch as described in claim 8, characterized in that, The overload indicator button switch also includes an on / off indicator light, which is disposed on the housing. One end of the on / off indicator light is connected to the moving contact piece, and the other end is configured as a neutral wire connection terminal.

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