Key switch and socket

Abstract

The application discloses a key switch and a socket, and relates to the technical field of the socket. The key switch comprises a switch shell, a pressing assembly, a static contact, a dynamic contact and an overload protection piece. The switch shell has an inner cavity, the inner cavity is provided with a first partition plate, the inner cavity is divided into a first cavity and a second cavity, the pressing assembly and the static contact are installed in the first cavity, and the overload protection piece is installed in the second cavity. The dynamic contact passes through the first partition plate, and two ends of the dynamic contact are located in the first cavity and the second cavity respectively, wherein the two ends of the dynamic contact are in contact with the static contact and the overload protection piece respectively. The key switch is configured in such a manner that when the current flowing through the overload protection piece exceeds a set threshold value, the overload protection piece and the dynamic contact are out of contact. The key switch and the socket disclosed by the application have the advantages that the key switch occupies a small volume in the shell space of the socket, is convenient to install, and is beneficial to improving the assembly efficiency of the socket.

Description

Technical Field

[0001] This application relates to the field of socket technology, specifically to a push-button switch and socket. Background Technology

[0002] Power outlets typically use switches to control the on / off state of the power supply for convenient electricity management, with push-button switches being the most common. Furthermore, many outlets also have built-in overload protectors. When the current exceeds a safe level, the overload protector automatically cuts off the power to prevent overheating of the wires and potential fires, thus improving electrical safety.

[0003] In related technologies, push-button switches and overload protectors are usually two separate independent devices. When assembling sockets, they involve different assembly processes and occupy a large amount of internal space. Summary of the Invention

[0004] In view of this, this application provides a push-button switch and a socket, wherein the push-button switch occupies a small volume of the socket housing and is easy to install, thereby improving the assembly efficiency of the socket.

[0005] The specific technical solution adopted in this application is as follows:

[0006] This application provides a push button switch, which includes a switch housing, a pressing assembly, a stationary contact, a moving contact, and an overload protection component.

[0007] The switch housing has an inner cavity, and a first partition is provided in the inner cavity to divide the inner cavity into a first cavity and a second cavity.

[0008] The pressing assembly and the stationary contact piece are installed in the first cavity, and the overload protection component is installed in the second cavity; the movable contact piece passes through the first partition so that both ends of the movable contact piece are located in the first cavity and the second cavity respectively, wherein the two ends of the movable contact piece are detachably in contact with the stationary contact piece and the overload protection component respectively;

[0009] When the current flowing through the overload protection component exceeds a set threshold, the overload protection component and the moving contact piece disengage.

[0010] Optionally, one end of the overload protection component is fixedly connected to the output terminal of the push button switch, and the other end of the overload protection component is a suspended end and has a first moving contact. The first moving contact is used to contact and cooperate with the first stationary contact on the moving contact piece. When the current flowing through the overload protection component exceeds the set threshold, the overload protection component deforms and causes the first moving contact to move away from the first stationary contact.

[0011] Optionally, the overload protection component has an elastic protrusion in the middle portion, and the protrusion direction of the elastic protrusion changes with the deformation of the overload protection component. When the first moving contact and the first stationary contact are in contact, the moving contact is located on the concave side of the elastic protrusion; when the first moving contact moves to the position furthest from the first stationary contact, the moving contact is located on the convex side of the elastic protrusion.

[0012] Optionally, the push-button switch includes a reset assembly, which is mounted in the second cavity and is movable relative to the switch housing;

[0013] When the overload protection component disengages from the moving contact, the reset assembly moves between the overload protection component and the moving contact to separate them.

[0014] Optionally, the reset assembly includes an insulating plate movable between a first position and a second position, wherein:

[0015] The first position is located on the moving path of the first moving contact. When the insulating plate is in the first position, the surface of the insulating plate facing away from the moving contact piece can abut against the first moving contact.

[0016] The second position is outside the movement path of the first moving contact, and when the insulating plate is in the second position, it has a tendency to move toward the first position.

[0017] Optionally, a portion of the suspended end of the overload protection component forms a protrusion, the movable contact is located on the protruding side of the protrusion, and the first movable contact is located at the top of the protrusion;

[0018] When the insulating plate is in the second position, the first moving contact and the first stationary contact are in contact, and the side of the insulating plate abuts against the side of the protrusion.

[0019] Optionally, the suspended end of the overload protection component may also include the remaining portion other than the protrusion;

[0020] When the insulating plate is in the second position, the insulating plate is located between the moving contact piece and the rest of the portion.

[0021] Optionally, the reset assembly includes a drive member connected to the insulating plate, the drive member being configured to apply a driving force to the insulating plate located in the second position, the driving force being used to drive the insulating plate from the second position to the first position.

[0022] Optionally, the driving element is an elastomer, which is movably mounted on the switch housing, with one end of the elastomer protruding from the outside of the switch housing. The insulating plate is connected to the elastomer, wherein as the insulating plate moves from the second position to the first position, the elastic deformation of the elastomer gradually decreases; or,

[0023] The driving component includes a reset rod and an elastic element. The reset rod is movably mounted on the switch housing, and one end of the reset rod protrudes from the outside of the switch housing. The two ends of the elastic element elastically abut against the reset rod and the switch housing, respectively. The insulating plate is connected to the reset rod. As the insulating plate moves from the second position to the first position, the elastic deformation of the elastic element gradually decreases.

[0024] Optionally, the first partition includes a first plate portion and a second plate portion that are bent and connected together.

[0025] The portion of the movable contact piece located within the first cavity is separated from the driving member by the first plate portion, and the stationary contact piece is located on the side of the movable contact piece away from the first plate portion;

[0026] The portion of the moving contact located within the first cavity and the stationary contact are separated from the overload protection component by the second plate portion.

[0027] Optionally, the insulating plate is a Z-shaped plate, comprising a first horizontal plate, a vertical plate, and a second horizontal plate connected in sequence, wherein the side of the first horizontal plate away from the vertical plate is connected to the driving member; the side of the second horizontal plate away from the vertical plate extends toward the first stationary contact.

[0028] When the first moving contact disengages from the first stationary contact, at least a portion of the second horizontal plate is located between the first moving contact and the first stationary contact.

[0029] Optionally, the first horizontal plate and the second horizontal plate have a non-flat angle between them; and / or,

[0030] The second horizontal plate includes a first plate segment and a second plate segment, the first plate segment being connected to the vertical plate, and the second plate segment being mounted to the upper housing via the first snap-fit ​​portion away from the vertical plate; and / or,

[0031] The first partition is provided with a second latching part, and the fourth plate is installed on the upper housing through the second latching part.

[0032] Optionally, the first latching part includes a first limiting block and a first locking block, and a second gap is provided between the first limiting block and the first locking block along the opening direction of the inner cavity;

[0033] The edge of the third plate portion away from the fourth plate portion is bent in a direction away from the fourth plate portion to form a first folded edge, and the first folded edge is installed in the second interval.

[0034] Optionally, the second latching part includes a first latching position, and the fourth plate part has a second latching block, which is connected to the first latching position. The second latching block is formed by cutting a portion of the fourth plate part and then bending it toward the direction of the first partition.

[0035] Optionally, the switch housing includes a second partition plate connected to the plate surface of the first partition plate facing the second cavity, and the orthographic projection of the second partition plate onto the plate surface of the first partition plate covers the first latch, wherein a third gap is formed between the second partition plate and the first partition plate, and a portion of the fourth plate portion is located within the third gap;

[0036] The overload protection component is located on the side of the second partition away from the first partition, and it contacts and engages with the portion of the fourth plate located outside the third interval.

[0037] Optionally, the stationary contact piece is fixed to the lower cover, and a fourth gap is formed between the main body of the stationary contact piece and the lower cover, wherein the second stationary contact point is provided on the main body.

[0038] Optionally, the stationary contact piece further includes two second folded edges, which are respectively connected to opposite sides of the main body and are respectively bent away from the moving part relative to the main body;

[0039] The lower cover has two slots spaced apart, and the two second folded edges are respectively inserted into the two slots.

[0040] Optionally, the push-button switch includes a first input terminal, one end of which is fixedly connected to the stationary contact piece, and the other end of which extends to the outside of the switch housing. The other end of the first input terminal has a concave surface, and the concave surface is provided with uneven grooves.

[0041] Optionally, the push-button switch further includes a second input terminal and an indicator light assembly, the indicator light assembly including a light-emitting element, a lampshade, and two conductive elements.

[0042] The second input terminal is installed inside the first cavity, and the second input terminal is spaced apart from the stationary contact and the moving contact, respectively;

[0043] The light-emitting element and the lampshade are located on the side of the pressing assembly away from the moving contact piece, wherein the light-emitting element is limited between the pressing assembly and the lampshade piece, and the two ends of the light-emitting element are electrically connected to the moving contact piece and the second input terminal respectively through the two conductive elements; the lampshade piece is movably connected to the switch housing.

[0044] Another aspect of this application provides a socket, which includes the push-button switch described in the first aspect.

[0045] In the push-button switch provided in this application embodiment, the inner cavity of the switch housing is divided into two sub-cavities by a first partition. A pressing component, a moving contact, and a stationary contact for on / off control, as well as an overload protection component for overload protection, are respectively installed in these two sub-cavities. Parts requiring electrical connection can make contact through the first partition, while parts not requiring electrical connection are electrically insulated from each other by the first partition. Therefore, the solution in this application embodiment achieves modular integrated assembly of a traditional push-button switch and a traditional overload protector, resulting in a compact structure and reasonable layout. In socket assembly scenarios, this push-button switch is easy to install and occupies little space within the socket housing, which is beneficial for improving socket assembly efficiency. Attached Figure Description

[0046] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the external structure of a push-button switch provided in an embodiment of this application;

[0048] Figure 2 This is an exploded view of a push-button switch provided in an embodiment of this application;

[0049] Figure 3 This is a schematic diagram of the internal structure of an upper shell provided in an embodiment of this application;

[0050] Figure 4 This is a schematic diagram of the internal structure of a push-button switch (with a hidden lower cover) provided in an embodiment of this application;

[0051] Figure 5 This is a schematic diagram of the structure of the push button switch in the non-overload disconnect state provided in the embodiment of this application;

[0052] Figure 6 This is a schematic diagram of the structure of the push-button switch when a current overload occurs, as provided in the embodiment of this application;

[0053] Figure 7 This is a schematic diagram of the structure of the push button switch in the overload disconnect state provided in the embodiment of this application;

[0054] Figure 8 This is a schematic diagram showing the connection between the overload protection device and the output terminal provided in the embodiments of this application;

[0055] Figure 9 This is a schematic diagram of the push-button switch provided in this application embodiment when the insulating plate is in the first position;

[0056] Figure 10 This is a schematic diagram of the push-button switch provided in this application embodiment when the insulating plate is in the second position;

[0057] Figure 11 This is a schematic diagram of the cooperation structure between the insulating plate, the moving contact, the driving member, and the overload protection member when the insulating plate is in the second position according to the embodiment of this application.

[0058] Figure 12 This is a schematic diagram of the connection structure between the reset rod and the insulating plate provided in an embodiment of this application;

[0059] Figure 13 yes Figure 12 Top view of the reset rod and insulating plate shown;

[0060] Figure 14 This is a schematic diagram of the cooperation structure between the insulating plate, the moving contact, the driving member, and the overload protection member when the insulating plate is in the first position according to the embodiment of this application;

[0061] Figure 15 This is a schematic diagram of the moving contact piece on the switch housing provided in the embodiments of this application;

[0062] Figure 16 This is a cross-sectional view of the assembly structure of the moving contact on the switch housing provided in the embodiments of this application;

[0063] Figure 17 This is a schematic diagram of the structure of the moving contact provided in the embodiments of this application;

[0064] Figure 18 This is an isometric view of the upper shell structure provided in an embodiment of this application;

[0065] Figure 19 This is a schematic diagram of the assembly of the moving contact and the upper housing provided in an embodiment of this application;

[0066] Figure 20 This is a cross-sectional view of the moving contact, overload protection device and output terminal provided in the embodiments of this application on the upper housing;

[0067] Figure 21This is a schematic diagram of the assembly of the static contact piece and the lower cover provided in an embodiment of this application;

[0068] Figure 22 This is a schematic diagram of the structure of the static contact sheet provided in the embodiments of this application;

[0069] Figure 23 This is a schematic diagram of the structure of a push-button switch provided in an embodiment of this application when the moving contact and the stationary contact are separated and disconnected;

[0070] Figure 24 This is a schematic diagram of the structure of a push-button switch provided in an embodiment of this application when the moving contact and the stationary contact are in contact and conducting.

[0071] Figure 25 This is a schematic diagram of the external structure of a push-button switch with an indicator light provided in an embodiment of this application;

[0072] Figure 26 This is a schematic diagram of the internal structure of a push-button switch with an indicator light provided in an embodiment of this application.

[0073] Figure label:

[0074] 1. Switch housing; 11. Upper housing; 111. First partition; 1111. First plate portion; 1112. Second plate portion; 1113. Third locking block; 112. First cavity; 113. Second cavity; 114. First latching portion; 1141. First limiting block; 1142. First locking block; 1143. Second interval; 115. Second latching portion; 116. First latching position; 117. Second partition; 118. Third interval; 1191. Third latching position; 1192. Fourth latching position; 1193. Fifth latching position; 12. Lower cover; 121. Slot; 122. Support rib; 123. Second latching position; 124. Fourth locking block; 125. Fifth locking block; 13. First interval;

[0075] 2. Pressing assembly; 21. Button; 22. First push rod; 23. Second push rod; 24. Compression spring; 25. Glue pin;

[0076] 3. Stationary contact piece; 31. Second stationary contact point; 32. Main body; 33. Second folded edge; 34. Fourth interval;

[0077] 4. Moving contact piece; 41. Movable part; 42. Fixed part; 421. Third plate part; 4211. First folded edge; 422. Fourth plate part; 4221. Second locking block; 43. First stationary contact; 44. Second moving contact;

[0078] 5. Overload protection component; 51. Bimetallic strip; 511. Protrusion; 5111. Top; 5112. Root; 5113. Side; 512. Remaining part; 513. Resilient protrusion; 52. First moving contact;

[0079] 6. Reset assembly; 61. Insulating plate; 611. First horizontal plate; 612. Vertical plate; 613. Second horizontal plate; 6131. ​​First plate segment; 6132. Second plate segment; 62. Driving component; 621. Reset rod; 622. Elastic component;

[0080] 7. Output terminals;

[0081] 8. First input terminal; 81. Concave curved surface;

[0082] 9. Second input terminal;

[0083] 10. Indicator light assembly; 101. Light-emitting element; 102. Lamp cover; 1021. Sixth card block; 103. Conductive element.

[0084] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0085] 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0086] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0087] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0088] This application provides a push-button switch for use in sockets, such as wired sockets (also known as extension cord sockets) and wireless sockets (also known as wireless sockets). Figure 1 The appearance of a push-button switch provided in an embodiment of this application is shown. Figure 2 The diagram illustrates the composition of a push-button switch according to an embodiment of this application. For example... Figure 1 and Figure 2 As shown, the push button switch provided in this application embodiment includes a switch housing 1, a pressing assembly 2, a stationary contact 3, a moving contact 4, and an overload protection component 5.

[0089] like Figure 3 As shown, the switch housing 1 has an inner cavity, in which a first partition 111 is disposed, dividing the inner cavity into a first cavity 112 and a second cavity 113. The first partition 111 is made of insulating material, and the first cavity 112 and the second cavity 113 can be electrically isolated through the first partition 111.

[0090] like Figure 4 As shown, the pressing component 2 and the stationary contact piece 3 are both installed in the first cavity 112, and the overload protection component 5 is installed in the second cavity 113. It should be noted that in this embodiment, the term "installed in" the first or second cavity means that at least a portion of the structural component is installed or accommodated via the first cavity 112 or the second cavity 113. Specifically, this includes both cases where the structural component is completely accommodated within the first or second cavity, and cases where only a portion of the structural component is accommodated within the first or second cavity, while the other portion is located outside the first or second cavity.

[0091] The movable contact 4 passes through the first partition 111, for example, the movable contact 4 crosses or passes through a through hole on the first partition 111 from one side, so that the movable contact 4 has a portion located in the first cavity 112 and a portion located in the second cavity 113, wherein the portion of the movable contact 4 located in the first cavity 112 is also in detachable contact with the stationary contact 3, and the portion of the movable contact 4 located in the second cavity 113 is also in detachable contact with the overload protection member 5.

[0092] In this embodiment, the push-button switch is configured such that when the current flowing through the overload protection element 5 exceeds a set threshold, the overload protection element 5 and the moving contact 4 disengage.

[0093] It should be noted that "detachable contact and engagement" means that the two objects can be in contact with each other, and that when certain conditions are met (such as being subjected to an external force), the two objects can move relative to each other and thus detach from the contact.

[0094] In the embodiments of this application, such as Figure 23As shown, when the moving contact 4 is out of contact with the stationary contact 3, no current can be conducted between the moving contact 4 and the stationary contact 3. The state of the push-button switch at this time can be called the open state. Figure 24 As shown, when the moving contact 4 and the stationary contact 3 are in contact, current can be conducted between them. This state of the push-button switch can be called the engaged state. However, since there is also a detachable contact between the moving contact 4 and the overload protection element 5, the push-button switch may be energized or de-energized when it is in the open or closed state.

[0095] like Figure 5 As shown, when the moving contact 4 is in contact with the overload protection component 5, the moving contact 4 and the overload protection component 5 are electrically connected. If the button switch is in the open state at this time, the button switch is de-energized; if the button switch is in the closed state at this time, the button switch is energized.

[0096] If an overload occurs while the push-button switch is powered on, such as Figure 6 As shown, the overload protection element 5 will disengage from the moving contact 4, thereby de-energizing the push-button switch, and at least a portion of the reset assembly 6 will move between the overload protection element 5 and the moving contact 4, separating them. Thus, even if the overload protection element 5 resets, as... Figure 7 As shown, the overload protection component 5 only abuts against the reset assembly 6 and does not contact the moving contact 4, thus preventing the push-button switch from being powered on again and avoiding the safety hazards caused by frequent circuit overload. Figure 7 The push-button switch state shown is called the overload disconnect state. It should be understood that in the overload disconnect state, the moving contact 4 and the stationary contact 3 usually maintain contact, but the overload protection component 5 is disconnected from the moving contact 4 and moved away from each other.

[0097] It should be noted that "overload" refers to a current flowing through the device exceeding a set threshold. This threshold is set by technicians based on the actual situation; for example, the threshold can be equal to the rated current value.

[0098] In the push-button switch provided in this embodiment, the inner cavity of the switch housing 1 is divided into two sub-cavities by a first partition 111. The pressing assembly 2, moving contact 4, and stationary contact 3 for on / off control, and the overload protection component 5 for overload protection are respectively installed in these two sub-cavities. Parts requiring electrical connection can make contact through the first partition 111, while parts not requiring electrical connection are electrically insulated from each other by the first partition 111. Therefore, the solution in this embodiment achieves modular integrated assembly of a traditional push-button switch and a traditional overload protector, resulting in a compact structure and reasonable layout. In socket assembly scenarios, this push-button switch occupies a small space within the socket housing and is easy to install, which helps improve the assembly efficiency of the socket.

[0099] In some embodiments of this application, the overload protection element 5 may be a bimetallic strip 51. The bimetallic strip 51 is composed of two metals with different coefficients of thermal expansion. When current passes through it, the bimetallic strip 51 will bend and deform to different degrees due to the different amounts of heat generated by the current.

[0100] like Figure 8 As shown, one end of the bimetallic strip 51 is fixedly connected to the output terminal 7 of the push-button switch. Figure 5 As shown, the output terminal 7 is installed in the second cavity 113 of the switch housing 1, and a portion of the output terminal 7 extends to the outside of the switch housing 1 to facilitate electrical connection with other electrical devices, such as sockets.

[0101] See also Figure 8 The other end of the bimetallic strip 51 is suspended, and this other end of the bimetallic strip 51 is referred to as the suspended end. The suspended end has a first moving contact 52, which is used to contact and cooperate with the first stationary contact 43 on the moving contact piece 4.

[0102] Optionally, both the first moving contact 52 and the first stationary contact 43 are silver contacts. Silver contacts have low and stable contact resistance, which can effectively reduce current loss and improve conductivity.

[0103] In this embodiment, when the current flowing through the bimetallic strip 51 is overloaded, that is, when the current flowing through the circuit exceeds a set threshold, the bimetallic strip 51 deforms due to the heat generated by the large current, causing the suspended end of the bimetallic strip 51 to bend away from the moving contact 4. In this way, the first moving contact 52 provided at the suspended end will also move away from the first stationary contact 43, thereby disengaging from the first stationary contact 43. Thus, the push button switch can achieve power cut-off under overload conditions.

[0104] In some embodiments of this application, such as Figure 1 and Figure 2As shown, the push-button switch also includes a reset assembly 6. The reset assembly 6 is installed in the second cavity 113 and is movable relative to the switch housing 1. When the overload protection element 5 loses contact with the moving contact 4, the reset assembly 6 moves between the overload protection element 5 and the moving contact 4 to separate the overload protection element 5 and the moving contact 4, thereby preventing the push-button switch from being energized.

[0105] In one example, the reset assembly 6 includes an insulating plate 61, through which the overload protection element 5 and the moving contact 4 are separated when the push-button switch is in the overload disconnect state.

[0106] Insulating board 61 can be used as Figure 9 The first position shown and as Figure 10 The device moves between the second positions shown. The first position is located on the movement path of the first moving contact 52, see [reference needed]. Figure 9 When the insulating plate 61 is in the first position, the insulating plate 61 is located between the first moving contact 52 and the first stationary contact 43. The surface of the insulating plate 61 away from the moving contact piece 4 can abut against the first moving contact 52, and the surface of the insulating plate 61 close to the moving contact piece 4 can be in contact with or not in contact with the first stationary contact 43.

[0107] See Figure 10 The second position is located outside the movement path of the first moving contact 52. When the insulating plate 61 is in the second position, the first moving contact 52 and the first stationary contact 43 can make contact and are not obstructed by the insulating plate 61. However, at this time, the insulating plate 61 is under force and has a tendency to move towards the first position. Thus, once an overload occurs that causes the first moving contact 52 to lose contact with the first stationary contact 43, the insulating plate 61 can immediately move towards the first position to promptly separate the overload protection member 5 and the moving contact piece 4.

[0108] In some embodiments of this application, such as Figure 8 As shown, a portion of the suspended end of the bimetallic strip 51 forms a protrusion 511, while the remaining portion 512 of the suspended end transitions smoothly. Figure 10 As shown, the movable contact 4 is located on the protruding side of the protrusion 511, and the first movable contact 52 is located at the top 5111 of the protrusion 511. In this embodiment, the top 5111 of the protrusion 511 refers to the portion of the protrusion 511 away from the suspended end of the remaining portion 512; the protrusion 511 also has a root portion 5112 for connecting with the remaining portion 512, and a side portion 5113 located between the top 5111 and the root portion 5112. Along the protruding direction of the protrusion 511, the top 5111 and the root portion 5112 are positioned opposite each other. When the insulating plate 61 is in the second position, the first movable contact 52 and the first stationary contact 43 are in contact, the insulating plate 61 is located between the movable contact 4 and the remaining portion 512, and the side of the insulating plate 61 abuts against the side portion 5113 of the protrusion 511.

[0109] Thus, when the insulating plate 61 is in the second position, it abuts against the side portion 5113 of the protrusion 511 at the suspended end of the bimetallic strip 51, applying a certain pressure to the side portion 5113. The direction of this pressure is perpendicular to the contact direction of the first moving contact 52 and the second stationary contact 31. In one example, at the contact point between the insulating plate 61 and the side portion 5113 of the protrusion 511, the tangential plane of the side portion 5113 is perpendicular to the direction of the pressure applied by the insulating plate 61. At this time, no matter how large the pressure applied by the insulating plate 61 is (but it is necessary to ensure that the overload protection element 5 is not damaged), it cannot drive the suspended end of the bimetallic strip 51 away from the moving contact 4. As a result, the first moving contact 52 and the first stationary contact 43 maintain contact and are not affected by the pressure of the insulating plate 61. In another example, at the contact point between the insulating plate 61 and the side portion 5113 of the protrusion 511, the tangential plane of the side portion 5113 intersects obliquely with the direction of the pressure applied by the insulating plate 61. At this time, the pressure applied by the insulating plate 61 should be kept within a range that is insufficient to drive the suspended end of the bimetallic strip 51 away from the moving contact 4, so as to ensure that the first moving contact 52 and the first stationary contact 43 can maintain contact and are not affected by the pressure of the insulating plate 61.

[0110] In some embodiments of this application, the reset assembly 6 includes a drive member 62 connected to an insulating plate 61. The drive member 62 is configured to apply a driving force to the insulating plate 61 in a second position, the driving force being used to move the insulating plate 61 from the second position to a first position. Thus, when the insulating plate 61 is in the second position, the driving force causes the insulating plate 61 to tend to move towards the first position.

[0111] Optionally, the driving element 62 can be an elastomer (not shown in the figure), such as a rubber spring. This elastomer is movably mounted on the switch housing 1, with one end protruding from the outside of the switch housing 1 to receive external actuation. The insulating plate 61 is connected to the elastomer, wherein the elastic deformation of the elastomer gradually decreases as the insulating plate 61 moves from the second position to the first position. For example, when the insulating plate 61 is in the first position, the elastic deformation of the elastomer is zero, and the insulating plate 61 is no longer subjected to driving force, thus it can remain in the first position.

[0112] Optionally, such as Figure 11 As shown, the driving component 62 may include a reset rod 621 and an elastic component 622, wherein the reset rod 621 is generally made of insulating material, and the elastic component 622 may be, for example, a spring. See also... Figure 1 The reset lever 621 is movably mounted on the switch housing 1, and one end of the reset lever 621 protrudes from the outside of the switch housing 1 to receive external actuation. See also Figure 11The two ends of the elastic element 622 elastically abut against the reset rod 621 and the switch housing 1, respectively. The insulating plate 61 is connected to the reset rod 621. As the insulating plate 61 moves from the second position to the first position, the elastic deformation of the elastic element 622 gradually decreases. For example, when the insulating plate 61 is in the first position, the elastic deformation of the elastic element 622 is very small, and the elastic force it provides cancels out the weight of the reset rod 621 and the insulating plate 61. At this time, the insulating plate 61 is no longer subjected to driving force, so it can stay in the first position.

[0113] It should be noted that in this embodiment, the switch housing 1 is provided with a through hole, and the drive member 62 has a portion that protrudes from the outside of the switch housing 1 through the through hole. "Protruding from the outside of the switch housing 1 through the through hole" includes both the case where the drive member 62 extends out of the switch housing 1 through the through hole and the case where the drive member 62 is located inside the switch housing 1 or flush with the edge of the through hole, and at least a portion of the drive member 62 is visible along the direction directly opposite the through hole. Figure 1 This shows one end of the reset rod 621 in the drive 62 extending through a through hole in the switch housing 1 to the outside of the switch housing 1.

[0114] The portion of the actuator 62 exposed outside the switch housing 1 is used to receive external actuation. When the push-button switch is in the position shown... Figure 7 In the overload disconnect state shown, because the insulating plate 61 is located between the first moving contact 52 and the first stationary contact 43, the push-button switch cannot actively restore power. In this case, the user can manually press the portion of the drive element 62 (e.g., the reset lever 621) exposed outside the switch housing 1, causing the drive element 62 to move the insulating plate 61 from the first position to the second position, while the elastic deformation of the elastic body or elastic element 622 increases. When the insulating plate 61 leaves the moving path of the first moving contact 52, the first moving contact 52 can move closer to the first stationary contact 43 under the deformation force of the bimetallic strip 51 itself, until it contacts the first stationary contact 43. Subsequently, the user can remove the pressing force, and the insulating plate 61 is located in the second position under the driving force of the drive element 62, that is, it abuts against the side 5113 of the protrusion 511 at the suspended end of the bimetallic strip 51.

[0115] In some embodiments of this application, combined with Figure 3 and Figure 4 As shown, in order to achieve a reasonable layout of each component in the inner cavity of the switch housing 1 and improve the space utilization of the inner cavity, the drive component 62 is located on the first side of the moving contact 4 and the stationary contact 3, and the overload protection component 5 is located on the second side of the moving contact 4 and the stationary contact 3, with the first side and the second side being adjacent.

[0116] See Figure 3The first partition 111 includes a first plate portion 1111 and a second plate portion 1112 that are bent and connected. The portion of the movable contact 4 located in the first cavity 112 is separated from the drive member 62 by the first plate portion 1111. The stationary contact 3 is located on the side of the movable contact 4 away from the first plate portion 1111. The portion of the movable contact 4 located in the first cavity 112 and the stationary contact 3 are separated from the overload protection member 5 by the second plate portion 1112.

[0117] This ensures electrical isolation between the moving contact 4 and the driving component 62, as well as electrical isolation between the stationary contact 3 and the overload protection component 5, thereby guaranteeing the effectiveness of the overload protection function.

[0118] Optionally, the first partition 111 is an L-shaped plate, with the first plate portion 1111 and the second plate portion 1112 perpendicular to each other, so as to facilitate the processing and forming of various structures inside the switch housing 1, and at the same time further improve the space utilization of the internal cavity, so as to achieve reasonable and full utilization of the arrangement space.

[0119] In some embodiments of this application, the insulating plate 61 is a Z-shaped plate, the shape of which matches the shape of the first partition 111 at the corner, in order to reduce the space occupied by the switch housing 1. Figure 12 and Figure 13 As shown, the insulating plate 61 includes a first horizontal plate 611, a vertical plate 612, and a second horizontal plate 613 connected in sequence. The side of the first horizontal plate 611 away from the vertical plate 612 is connected to the driving member 62, and the included angle between the first horizontal plate 611 and the second horizontal plate 613 is a non-flat angle. The second horizontal plate 613 includes a first plate segment 6131 and a second plate segment 6132 that are bent and connected. The first plate segment 6131 is connected to the vertical plate 612, and the second plate segment 6132 extends towards the first stationary contact 43. When the push-button switch is in an overload disconnection state, at least a portion of the second plate segment 6132 is located between the first stationary contact 43 of the moving contact 4 and the first moving contact 52 of the bimetallic strip 51, wherein the included angle between the first plate segment 6131 and the second plate segment 6132 is a non-flat angle.

[0120] It should be noted that in this embodiment, the "angle between the first horizontal plate 611 and the second horizontal plate 613" refers to the angle between the surface of the first horizontal plate 611 and the surface of the second horizontal plate 613; the "angle between the first plate segment 6131 and the second plate segment 6132" refers to the angle between the surface of the first plate segment 6131 and the surface of the second plate segment 6132; "non-flat angle" means that the angle is not 180°. That is, the two plate surfaces are not parallel. In this way, by bending multiple sections, the insulating plate 61 enables the second plate segment 6132 to extend between the moving contact piece 4 and the bimetallic strip 51 when the first horizontal plate 611 is connected to the driving member 62.

[0121] Optionally, at least a portion of the surface of the second plate segment 6132 is parallel to the surface of the movable contact piece 4, thus avoiding interference between the insulating plate 61 and the movable contact piece 4 during the movement of the plate.

[0122] Optionally, such as Figure 13 As shown, the angle between the first horizontal plate 611 and the second plate segment 6132 is a right angle to match the L-shaped first partition 111, reducing unnecessary space waste.

[0123] In some embodiments of this application, a resilient protrusion 513 is formed in the middle portion of the bimetallic strip 51. The protrusion direction of the resilient protrusion 513 changes with the deformation of the bimetallic strip 51. When the first moving contact 52 and the first stationary contact 43 are in contact, such as... Figure 11 As shown, the movable contact 4 is located on the recessed side of the elastic protrusion 513; when the first movable contact 52 moves to the position furthest from the first stationary contact 43, as... Figure 14 As shown, the movable contact 4 is located on the protruding side of the elastic protrusion 513.

[0124] The middle portion of the bimetallic strip 51 refers to the part located between the connection end with the output terminal 7 and the suspended end. Generally, there is a gap between the elastic protrusion 513 and the protrusion 511 of the suspended end. The elastic protrusion 513 is used to improve the overall rigidity of the bimetallic strip 51, so that the bimetallic strip 51 will not bend or deform due to low temperature fluctuations, but will only bend and deform when the current flowing through it exceeds a set threshold and reaches a higher temperature. Furthermore, during the deformation of the bimetallic strip 51, the protruding direction of the elastic protrusion 513 also facilitates the smooth bending of the bimetallic strip 51. Optionally, the elastic protrusion 513 is a dome switch.

[0125] In the embodiments of this application, such as Figure 15 and Figure 16 As shown, the switch housing 1 includes an upper housing 11 and a lower cover 12. The upper housing 11 has an inner cavity and a first partition 111. The inner cavity has an open end, and the lower cover 12 is detachably disposed on the open end of the inner cavity. A first gap 13 is formed between the first partition 111 and the lower cover 12. The moving contact 4 includes a movable part 41 and a fixed part 42. The movable part 41 is located in the first cavity 112. One end of the movable part 41 is suspended and has a second movable contact 44 for contacting and engaging with the second stationary contact 31 on the stationary contact 3. The other end of the movable part 41 is connected to the portion of the fixed part 42 located in the first cavity 112. The other portion of the fixed part 42 passes through the first gap 13 and extends into the second cavity 113.

[0126] like Figure 23As shown, the pressing component 2 is located on the side of the second moving contact 44 away from the second stationary contact 31, and the pressing component 2 abuts against the movable part 41 of the moving contact 4. When the push-button switch is in the open state, if the pressing component 2 is subjected to pressing force, the pressing component 2 will push the suspended end of the movable part 41 to move closer to the stationary contact 3 until the second moving contact 44 contacts the second stationary contact 31, presenting a... Figure 24 The engagement state is shown.

[0127] The following provides an exemplary structure for a pressing component 2, such as... Figure 2 , Figure 23 and Figure 24 As shown, the outer casing is provided with a mounting sleeve with openings at both ends. The pressing assembly 2 includes a button 21, a first push rod 22, a second push rod 23, a compression spring 24, and a rubber pin 25. The switch cap is fixed to the first push rod 22 to receive the pressing force applied by the user; both the first push rod 22 and the second push rod 23 are movably mounted inside the mounting sleeve. The first push rod 22 is movably sleeved on the outside of the second push rod 23. The second push rod 23 has an opening at one end away from the first push rod 22. The compression spring 24 is located in the inner cavity of the second push rod 23 and elastically abuts against the second push rod 23. The end of the compression spring 24 away from the second push rod 23 is sleeved on the rubber pin 25. The rubber pin 25 is fixed or abuts against the suspended end of the movable part 41 of the movable contact piece 4.

[0128] like Figure 2As shown, the lower part of the first push rod 22 is provided with a plurality of first helical teeth spaced apart circumferentially, and the outer wall of the second push rod 23 is provided with a plurality of second helical teeth spaced apart circumferentially. The plurality of first helical teeth can mesh with the plurality of second helical teeth. At least one limiting block is provided on the bottom or inner wall of the sleeve mounted on the outer casing. Optionally, the number of first helical teeth is four, and the four first helical teeth are spaced apart from each other; the number of second helical teeth is eight, and the eight second helical teeth are connected in pairs, with the four pairs of second helical teeth spaced apart from each other. Based on the structure of the pressing component 2 described above, when button 21 is pressed, causing the first push rod 22 to push the second push rod 23 downward, the second helical tooth will be pushed to a position below the limiting block. Then, when the pressing force is released, the second push rod 23 moves upward under the elastic force of the compression spring 24. At this time, the second helical tooth may abut against the limiting block, thus keeping the second push rod 23 in its current position, thereby maintaining the second moving contact 44 in contact with the second stationary contact 31. Then, if button 21 is pressed again, causing the first push rod 22 to push the second push rod 23 downward... When the button 23 moves downwards, the second helical tooth will move downwards away from the limiting block. During this downward movement, based on the inclined surface engagement of the first and second helical teeth, the first helical tooth will also synchronously drive the second push rod 23 to rotate. Therefore, after the pressing force is released again, the position of the second helical tooth on the second push rod 23 is offset from the position of the limiting block (i.e., the limiting block is aligned with the space between two adjacent second helical teeth), allowing the second push rod 23 to reset. The second moving contact 44 will then disengage from the second stationary contact 31 based on the elastic deformation of the moving contact piece 4 itself. It should be noted that in the above example, the up-down direction is parallel to the movement direction of the pressing component 2. The movement direction of the button 21 when it is pressed is defined as "down," and the movement direction of the button 21 after the pressing force is released is defined as "up."

[0129] In some embodiments of this application, such as Figure 17 As shown, the fixing part 42 may include a third plate part 421 and a fourth plate part 422 that are bent and connected together. See also... Figure 16 The third plate portion 421 is connected to the movable portion 41 and extends through the first gap 13 into the second cavity 113. The fourth plate portion 422 of the fixed portion 42 is located inside the second cavity 113 and is bent and connected to the third plate portion 421. The first stationary contact point 43 is located on the fourth plate portion 422.

[0130] Optionally, the third plate portion 421 can be clamped between the first partition 111 and the lower cover 12. For example, see Figure 16 When the upper housing 11 and the lower cover 12 are assembled, one side of the third plate 421 of the fixing part 42 contacts the first partition 111, and the other side of the third plate 421 of the fixing part 42 contacts the support rib 122 provided on the lower cover 12. Therefore, the first partition 111 and the lower cover 12 cooperate to achieve clamping and fixing of the third plate 421.

[0131] Optionally, see Figure 16 At least a portion of the surface of the fourth plate 422 is in contact with the surface of the first partition 111 to ensure the stability of the contact between the first stationary contact 43 and the first moving contact 52.

[0132] In some embodiments of this application, the movable contact piece 4 is fixed by the upper housing 11. The first cavity 112 of the upper housing 11 is provided with a first latching part 114 on the cavity wall away from the second cavity 113. The first latching part 114 engages with the third plate part 421; and / or, the first partition 111 is provided with a second latching part 115, which engages with the fourth plate part 422.

[0133] For example, see Figure 18 The first latching part 114 includes a first limiting block 1141 and a first locking block 1142, wherein the first locking block 1142 is closer to the opening end of the inner cavity than the first limiting block 1141, and a second gap 1143 is formed between the first limiting block 1141 and the first locking block 1142 along the opening direction of the inner cavity. Figure 17 As shown, the edge of the third plate portion 421 of the fixing portion 42, away from the edge of the fourth plate portion 422, is bent in a direction away from the fourth plate portion 422 to form a first folded edge 4211. Figure 19 As shown, when the movable contact piece 4 is assembled with the upper housing 11, the first folded edge 4211 can be engaged in the second interval 1143, wherein the plate surface of the third plate portion 421 contacts the first limiting block 1141, and the edge of the first folded edge 4211 away from the plate surface of the third plate portion 421 contacts the first locking block 1142.

[0134] Optionally, such as Figure 19 As shown, the surface of the first locking block 1142 facing away from the first limiting block 1141 is a slope, which is used to facilitate the first folded edge 4211 to be inserted into the second gap 1143.

[0135] For example, see Figure 18 The second latching part 115 includes a first latching position 116, wherein the first latching position 116 can be a groove or a through hole. For example... Figure 17 As shown, the fourth plate portion 422 has a second locking block 4221, which is formed by cutting a portion of the fourth plate portion 422 and then bending it towards the first partition 111. After bending, the second locking block 4221 forms an inclined surface relative to the plate surface of the fourth plate portion 422, which facilitates the second locking block 4221 engaging with the first latching position 116. Figure 20 As shown, the second locking block 4221 engages with the first latch 116.

[0136] Therefore, based on the first latching part 114 and the second latching part 115, the movable contact piece 4 can be firmly latched onto the upper housing 11 for subsequent assembly.

[0137] In some embodiments of this application, such as Figure 20 As shown, the switch housing 1 includes a second partition 117, which is connected to the surface of the first partition 111 facing the second cavity 113. The orthographic projection of the second partition 117 onto the surface of the first partition 111 covers the first latch 116. A third gap 118 is formed between the second partition 117 and the first partition 111, and a portion of the fourth plate portion 422 is located within the third gap 118. An overload protection member 5 is located on the side of the second partition 117 away from the first partition 111 and contacts the portion of the fourth plate portion 422 located outside the third gap 118. A first stationary contact 43 is provided on the portion of the fourth plate portion 422 located outside the third gap 118.

[0138] The second partition 117 is made of insulating material. By setting the second partition 117, the facing area between the overload protection component 5 and the fourth plate can be reduced, avoiding the problem of untimely power disconnection caused by free electrons near the contact when the overload protection component 5 is far away from the moving contact 4, thereby ensuring the effectiveness of the overload protection function.

[0139] Optionally, the second partition 117 is an L-shaped plate to facilitate processing and to accommodate the fourth plate portion 422.

[0140] In some embodiments of this application, the upper housing 11 and the lower cover 12 may be connected by a snap-fit ​​connection to improve assembly convenience.

[0141] In one example, such as Figure 18 As shown, a third locking block 1113 can be provided on the first partition 111; as Figure 2 As shown, the lower cover 12 is provided with a locking post extending along the opening direction of the inner cavity, and the third locking block 1113 is adapted to engage with the second locking position 123 on the locking post.

[0142] In another example, such as Figure 2 As shown, a third latching position 1191 is provided on the outer side wall of the upper housing 11, and a first latching arm extending along the opening direction of the inner cavity is provided on the lower cover 12. A fourth latching block 124 is provided on the first latching arm. The first latching arm fits against the outer side wall of the upper housing 11, and the fourth latching block 124 engages with the third latching position 1191.

[0143] In another example, such as Figure 18 As shown, a fourth fastener 1192 is provided on the inner wall of the upper housing 11; as Figure 2As shown, the lower cover 12 is provided with a second snap-fit ​​arm extending along the opening direction of the inner cavity, and a fifth snap-fit ​​block 125 is provided on the second snap-fit ​​arm. The second snap-fit ​​arm fits against the inner side wall of the upper housing 11, and the fifth snap-fit ​​block 125 engages with the fourth fastener 1192.

[0144] In some embodiments of this application, such as Figure 21 and Figure 22 As shown, the stationary contact 3 is engaged and fixed with the lower cover 12, and a fourth gap 34 is formed between the main body 32 of the stationary contact 3 and the lower cover 12, wherein a second stationary contact 31 is provided on the main body 32.

[0145] For example, see Figure 22 The stationary contact piece 3 includes a main body 32 and two second folded edges 33. The two second folded edges 33 are respectively connected to opposite sides of the main body 32 and are bent away from the moving part 41 relative to the main body 32. Figure 21 As shown, the lower cover 12 has two slots 121 spaced apart, and the two second folded edges 33 are respectively inserted into the two slots 121.

[0146] The temperature at the mating position of the second stationary contact 31 and the second moving contact 44 is usually high. By forming a fourth gap 34 between the main body 32 of the stationary contact 3 and the lower cover 12, air circulation and heat dissipation are facilitated.

[0147] In some embodiments of this application, such as Figure 22 As shown, the push button switch also includes a first input terminal 8. One end of the first input terminal 8 is fixedly connected to the stationary contact piece 3, and the other end of the first input terminal 8 extends to the outside of the switch housing 1. The other end of the first input terminal 8 has a concave curved surface 81, and the concave curved surface 81 is provided with uneven grooves.

[0148] When this push-button switch is applied to a wireless socket, the power cord engages with the concave surface 81 of the first input terminal 8 to achieve a secure connection. Therefore, the concave surface 81 serves to position the power cord. Furthermore, by providing uneven grooves on the concave surface 81, the contact area between the first input terminal 8 and the power cord can be increased, improving conductivity.

[0149] In some embodiments of this application, such as Figure 26 and Figure 26As shown, the push-button switch also includes a second input terminal 9 and an indicator light assembly 10. The indicator light assembly 10 includes a light-emitting element 101, a lampshade 102, and two conductive elements 103. The second input terminal 9 is installed within the first cavity 112 and is spaced apart from the stationary contact 3 and the moving contact 4, respectively. The light-emitting element 101 and the lampshade 102 are located on the side of the pressing assembly 2 away from the moving contact 4. The light-emitting element 101 is limited between the pressing assembly 2 and the lampshade 102, and both ends of the light-emitting element 101 are electrically connected to the moving contact 4 and the second input terminal 9, respectively, via the two conductive elements 103. The lampshade 102 is movably connected to the switch housing 1, and the lampshade 102, the light-emitting element 101, and the pressing assembly 2 move synchronously.

[0150] The second input terminal 9 and the first input terminal 8 are terminals of different polarities. For example, the first input terminal 8 is the L-terminal and the second input terminal 9 is the N-terminal.

[0151] like Figure 25 and Figure 26 As shown, the conductive element 103 can be, for example, a metal spring. This metal spring can connect the light-emitting element 101 to the circuit, and also provide a spring force for the light-emitting element 101 and the lampshade 102 to return to their original positions after the pressing pressure is removed. Optionally, three mounting sleeves are formed on the switch housing 1, wherein the mounting sleeve located in the middle position is used to install the pressing assembly 2, and the other two mounting sleeves are used to install and position the metal spring.

[0152] like Figure 25 As shown, the switch housing 1 may also be provided with a fifth latch 1193, which is a through hole; the lampshade 102 may also have a snap-fit ​​arm extending along the pressing direction, and a sixth snap-fit ​​block 1021 is provided on the snap-fit ​​arm. The snap-fit ​​arm passes through the fifth latch 1193 and engages with the fifth latch 1193 through the sixth snap-fit ​​block 1021. Under the action of pressing pressure and the elastic force of the pressing assembly 2 and the two conductive parts 103, the lampshade 102 can move relative to the switch housing 1. At this time, the snap-fit ​​arm cooperates with the fifth latch 1193 to play a guiding role.

[0153] This application also provides a socket, which can be, for example, a wireless socket or a wired socket. The socket includes a push-button switch as described in any of the above embodiments.

[0154] The socket provided in this application embodiment, by adopting the push-button switch described in the above embodiment, not only has the functions of on / off control and overload protection, but also has a modular design and high integration, making it easy to assemble and occupying a small volume of space inside the socket housing.

[0155] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0156] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A push-button switch, characterized in that, The push button switch includes a switch housing (1), a pressing assembly (2), a stationary contact (3), a moving contact (4), and an overload protection component (5); The switch housing (1) includes an upper housing (11) and a lower cover (12). The upper housing (11) has an inner cavity with an open end. The lower cover (12) is detachably placed on the open end of the inner cavity. A first partition (111) is provided in the inner cavity to divide the inner cavity into a first cavity (112) and a second cavity (113). A first gap (13) is formed between the first partition (111) and the lower cover (12). The pressing assembly (2) and the stationary contact piece (3) are installed in the first cavity (112), and the overload protection member (5) is installed in the second cavity (113); the moving contact piece (4) passes through the first interval (13), so that the two ends of the moving contact piece (4) are respectively located in the first cavity (112) and the second cavity (113), wherein the two ends of the moving contact piece (4) are respectively detachably contacted with the stationary contact piece (3) and the overload protection member (5); The stationary contact piece (3) includes a main body (32) and two second folded edges (33). The main body (32) is provided with a second stationary contact point (31) that can be detachably contacted and engaged with the moving contact piece (4). The two second folded edges (33) are respectively connected to the two sides of the main body (32) and are respectively bent away from the moving contact piece (4) relative to the main body (32). The lower cover (12) is provided with two slots (121), and the two second folded edges (33) are respectively inserted into the two slots (121). When the current flowing through the overload protection component (5) exceeds the set threshold, the overload protection component (5) and the moving contact (4) disengage.

2. The push-button switch according to claim 1, characterized in that, One end of the overload protection component (5) is fixedly connected to the output terminal (7) of the push button switch, and the other end of the overload protection component (5) is a suspended end and has a first moving contact (52). The first moving contact (52) is used to contact and cooperate with the first stationary contact (43) on the moving contact piece (4). When the current flowing through the overload protection element (5) exceeds the set threshold, the overload protection element (5) deforms and causes the first moving contact (52) to move away from the first stationary contact (43).

3. The push-button switch according to claim 2, characterized in that, The overload protection member (5) has an elastic protrusion (513) in the middle part. The protrusion direction of the elastic protrusion (513) changes with the deformation of the overload protection member (5). When the first moving contact (52) and the first stationary contact (43) are in contact, the moving contact piece (4) is located on the concave side of the elastic protrusion (513). When the first moving contact (52) moves to the position furthest from the first stationary contact (43), the moving contact piece (4) is located on the protruding side of the elastic protrusion (513).

4. The push-button switch according to claim 2 or 3, characterized in that, The push button switch includes a reset assembly (6), which is installed in the second cavity (113) and is movable relative to the switch housing (1). When the overload protection member (5) disengages from the moving contact (4), the reset assembly (6) moves between the overload protection member (5) and the moving contact (4) to separate the overload protection member (5) and the moving contact (4).

5. The push-button switch according to claim 4, characterized in that, The reset assembly (6) includes an insulating plate (61) movable between a first position and a second position, wherein: The first position is located on the moving path of the first moving contact (52). When the insulating plate (61) is located in the first position, the insulating plate (61) can abut against the first moving contact (52) with the plate surface away from the moving contact piece (4). The second position is outside the movement path of the first moving contact (52), and when the insulating plate (61) is in the second position, it has a tendency to move toward the first position.

6. The push-button switch according to claim 5, characterized in that, A portion of the suspended end of the overload protection component (5) forms a protrusion (511), the movable contact (4) is located on the protruding side of the protrusion (511), and the first movable contact (52) is located on the top (5111) of the protrusion (511). When the insulating plate (61) is in the second position, the first moving contact (52) and the first stationary contact (43) are in contact, and the side of the insulating plate (61) abuts against the side (5113) of the protrusion (511).

7. The push-button switch according to claim 6, characterized in that, The overload protection component (5) also includes the remaining portion (512) other than the protrusion (511). When the insulating plate (61) is in the second position, the insulating plate (61) is located between the movable contact piece (4) and the remaining portion (512).

8. The push-button switch according to any one of claims 5-7, characterized in that, The reset assembly (6) includes a drive member (62) connected to the insulating plate (61), the drive member (62) being configured to apply a driving force to the insulating plate (61) located in the second position, the driving force being used to drive the insulating plate (61) from the second position to the first position.

9. The push-button switch according to claim 8, characterized in that, The driving element (62) is an elastomer, which is movably mounted on the switch housing (1), with one end of the elastomer protruding from the outside of the switch housing (1). The insulating plate (61) is connected to the elastomer, wherein as the insulating plate (61) moves from the second position to the first position, the elastic deformation of the elastomer gradually decreases; or, The driving component (62) includes a reset rod (621) and an elastic element (622). The reset rod (621) is movably mounted on the switch housing (1), and one end of the reset rod (621) protrudes from the outside of the switch housing (1). The two ends of the elastic element (622) elastically abut against the reset rod (621) and the switch housing (1) respectively. The insulating plate (61) is connected to the reset rod (621). As the insulating plate (61) moves from the second position to the first position, the elastic deformation of the elastic element (622) gradually decreases.

10. The push-button switch according to claim 8, characterized in that, The first partition (111) includes a first plate portion (1111) and a second plate portion (1112) that are bent and connected together. The portion of the movable contact (4) located within the first cavity (112) is separated from the driving member (62) by the first plate portion (1111), and the stationary contact (3) is located on the side of the movable contact (4) away from the first plate portion (1111). The portion of the moving contact (4) located within the first cavity (112) and the stationary contact (3) are separated from the overload protection member (5) by the second plate portion (1112).

11. The push-button switch according to claim 8, characterized in that, The insulating plate (61) is a Z-shaped plate, including a first horizontal plate (611), a vertical plate (612), and a second horizontal plate (613) connected in sequence. The first horizontal plate (611) is connected to the drive member (62) on the side away from the vertical plate (612). The second horizontal plate (613) extends towards the first stationary contact (43) on the side away from the vertical plate (612). When the first moving contact (52) disengages from the first stationary contact (43), at least a portion of the second horizontal plate (613) is located between the first moving contact (52) and the first stationary contact (43).

12. The push-button switch according to claim 11, characterized in that, The first horizontal plate (611) and the second horizontal plate (613) have a non-flat angle between them; and / or, The second horizontal plate (613) includes a first plate segment (6131) and a second plate segment (6132). The first plate segment (6131) is connected to the vertical plate (612), and the second plate segment (6132) is connected to the side of the first plate segment (6131) away from the vertical plate (612). The first plate segment (6131) and the second plate segment (6132) have a non-flat angle between them.

13. The push-button switch according to claim 1, characterized in that, The movable contact (4) includes a movable part (41) and a fixed part (42). The movable part (41) is located in the first cavity (112). One end of the movable part (41) is suspended and has a second movable contact (44) for contacting and cooperating with the second static contact (31) on the static contact (3). The other end of the movable part (41) is connected to the part of the fixed part (42) located in the first cavity (112). The other part of the fixed part (42) passes through the first interval (13) and extends into the second cavity (113).

14. The push-button switch according to claim 13, characterized in that, The fixing part (42) includes a third plate part (421) and a fourth plate part (422). The third plate part (421) is connected to the movable part (41) and extends through the first interval (13) into the second cavity (113). The fourth plate part (422) is located in the second cavity (113) and is bent and connected to the third plate part (421).

15. The push-button switch according to claim 14, characterized in that, A first latching part (114) is provided on the cavity wall of the first cavity (112) away from the second cavity (113), and the third plate part (421) is installed on the upper housing (11) through the first latching part (114); and / or, The first partition (111) is provided with a second latching part (115), and the fourth plate part (422) is installed on the upper housing (11) through the second latching part (115).

16. The push-button switch according to claim 15, characterized in that, The first latching part (114) includes a first limiting block (1141) and a first locking block (1142), and there is a second gap (1143) between the first limiting block (1141) and the first locking block (1142) along the opening direction of the inner cavity. The third plate portion (421) is away from the edge of the fourth plate portion (422) and is bent in a direction away from the fourth plate portion (422) to form a first folded edge (4211), which is installed in the second interval (1143).

17. The push-button switch according to claim 15, characterized in that, The second latching part (115) includes a first latching position (116), and the fourth plate part (422) has a second latching block (4221). The second latching block (4221) is connected to the first latching position (116). The second latching block (4221) is formed by cutting a part of the plate of the fourth plate part (422) and then bending it toward the first partition (111).

18. The push-button switch according to claim 17, characterized in that, The switch housing (1) includes a second partition (117) connected to the plate surface of the first partition (111) facing the second cavity (113), and the orthographic projection of the second partition (117) on the plate surface of the first partition (111) covers the first fastener (116), wherein a third gap (118) is formed between the second partition (117) and the first partition (111), and a portion of the fourth plate portion (422) is located within the third gap (118); The overload protection member (5) is located on the side of the second partition (117) away from the first partition (111), and is in contact with the portion of the fourth plate (422) located outside the third interval (118).

19. The push-button switch according to claim 13, characterized in that, The stationary contact piece (3) is fixed to the lower cover (12), and a fourth gap (34) is formed between the main body (32) of the stationary contact piece (3) and the lower cover (12).

20. The push-button switch according to claim 1, characterized in that, The push button switch includes a first input terminal (8), one end of which is fixedly connected to the stationary contact piece (3), and the other end of which extends to the outside of the switch housing (1). The other end of the first input terminal (8) has a concave surface (81) and the concave surface (81) is provided with uneven grooves.

21. The push-button switch according to claim 1, characterized in that, The push button switch also includes a second input terminal (9) and an indicator light assembly (10), the indicator light assembly (10) including a light-emitting element (101), a lampshade (102) and two conductive elements (103). The second input terminal (9) is installed in the first cavity (112), and the second input terminal (9) is spaced apart from the stationary contact (3) and the moving contact (4); The light-emitting element (101) and the lampshade (102) are located on the side of the pressing assembly (2) away from the moving contact (4), wherein the light-emitting element (101) is limited between the pressing assembly (2) and the lampshade (102), and the two ends of the light-emitting element (101) are electrically connected to the moving contact (4) and the second input terminal (9) respectively through the two conductive elements (103); the lampshade (102) is movably connected to the switch housing (1).

22. A socket, characterized in that, The socket includes a push-button switch as described in any one of claims 1-21.

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