Leakage protection mechanism of wall switch

Abstract

The utility model discloses a leakage protection mechanism of a wall switch. The leakage protection mechanism comprises a switch shell and a protection mechanism arranged in the switch shell. The protection mechanism comprises a support, a rotating frame, a locking rod, a contact piece assembly and a coil framework, wherein the rotating frame is in rotating fit with the bottom plate cover through rotating shafts on the two sides, and contact piece clamping grooves are formed in the two sides of the rotating frame; the locking rod is located between the two vertical plates, and the bottom of the locking rod penetrates out of a long groove opening of the bottom plate to serve as a triggering end; the breaking spring is arranged between the side, close to the lock rod, of the rotating frame and the bottom plate. The mechanism has efficient and reliable leakage protection performance, can quickly cut off a circuit when the circuit leaks electricity, effectively guarantees the personal safety of a user and the stable operation of electrical equipment, is simple in structure, and facilitates large-scale production and market promotion.

Description

Technical Field

[0001] This utility model relates to the field of wall switch technology, specifically to a leakage protection mechanism for a wall switch. Background Technology

[0002] In modern homes and various architectural spaces, wall switches are crucial components for controlling circuit switching, used extremely frequently, and their performance directly affects users' convenience and safety. Traditional wall switches are mainly designed for controlling the simple on / off switching of small-load appliances, with relatively simple functions, only possessing basic circuit opening and closing capabilities. However, with the increasing diversity and power of home appliances, the limitations of traditional wall switches become apparent when dealing with high-load appliances, especially in terms of serious deficiencies in leakage protection.

[0003] Currently, a significant number of wall switches on the market are not equipped with any protective circuits or devices. In such cases, once a leakage occurs, the current will flow unimpeded to the human body or surrounding electrical equipment, greatly increasing the risk of electric shock and seriously threatening the user's personal safety. It may also damage electrical equipment due to leakage, or even cause more serious safety accidents such as fires.

[0004] Some wall switches use fuses as a leakage current protection measure. While fuses can protect the circuit to some extent—blowing and cutting off the circuit when the leakage current exceeds the fuse's rated value—this protection method has significant drawbacks. When a wall switch experiences leakage and the fuse blows, the high temperature generated during the melting process often causes the area around the protective device to blacken, or even burn out the device. In this case, to restore normal operation, the user has to replace the entire switch, which not only increases the user's financial cost but also presents numerous inconveniences during the replacement process, such as damage to the wall due to disassembly and installation, affecting the overall aesthetics.

[0005] In conclusion, developing a wall switch leakage protection mechanism with reliable leakage protection function, reasonable structure, and controllable cost is of significant practical importance for improving the safety of wall switches, reducing user costs, and optimizing the stability of home electrical systems. The leakage protection mechanism proposed in this application is designed to effectively solve the problems in the aforementioned prior art. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a leakage protection mechanism for a wall switch.

[0007] The technical solution adopted in this utility model is: a leakage protection mechanism for a wall switch, including a switch housing and a protection mechanism disposed within the switch housing, the protection mechanism comprising:

[0008] The bracket includes a circuit board, a base plate connected to the circuit board, and a base plate cover connected to the base plate. Two upright plates are provided on one end of the base plate.

[0009] A rotating frame, wherein the rotating frame is rotatably engaged with the base plate cover via rotating shafts on both sides of the rotating frame, and contact slots are provided on both sides of the rotating frame;

[0010] The locking rod is set between two upright plates, and the bottom of the locking rod passes through the long slot of the bottom plate as the trigger end. A positioning step is provided on the side of the locking rod near the rotating frame, and a locking rod spring is provided on the other side. The locking rod spring has an elastic force that pushes the locking rod towards the side of the rotating frame.

[0011] A contact assembly, comprising a movable contact and a stationary contact, wherein one end of the movable contact is connected to the aforementioned contact slot, and the contact point of the movable contact extends through the space between the rotating frame and the base plate to above the contact point of the stationary contact, and the stationary contact is connected to the circuit board.

[0012] An electromagnetic disconnection mechanism includes a coil frame, a magnetic yoke, and a moving ring. The moving ring is fitted around the outer ring of the coil frame, and the magnetic yoke is located at the bottom of the coil frame. The coil frame is connected to the circuit board via support legs.

[0013] A break spring is disposed between the rotating frame and the base plate on the side near the locking rod. The break spring has an elastic force that tilts one end of the rotating frame upward.

[0014] Furthermore, the coil frame has lower steps on both sides and an upper step below the base plate. The lower steps and the upper steps form a groove for guiding the moving ring.

[0015] Furthermore, a hook is provided on the lower part of the base plate for connecting to the connection port on the circuit board.

[0016] Furthermore, the base plate cover is provided with two rotating shaft plates, the middle part of the rotating frame is connected to the two rotating shaft plates, and the rotating shaft is set on the middle part of the rotating frame and rotates in cooperation with the rotating groove on the rotating shaft plate.

[0017] Furthermore, it also includes a reset button located on the base plate cover, and a reset spring is provided on the shaft of the reset button.

[0018] Furthermore, a buckle is provided on the base plate, and a buckling step is provided on the base plate cover to engage with the buckle.

[0019] The beneficial effects of this utility model are:

[0020] Highly efficient and reliable leakage protection: When a leakage occurs in the circuit where the wall switch is located, the coil frame in the electromagnetic disconnecting mechanism is energized, generating a magnetic field. This causes the moving ring, which is fitted around the outer ring of the coil frame, to displace under the influence of the magnetic field. The moving ring triggers the locking rod located between the two upright plates, causing the locking rod to overcome the spring force of the locking rod spring and move away from the rotating frame. The positioning step on the side of the locking rod closest to the rotating frame is released from its restraint on the rotating frame. At this time, the disconnecting spring comes into play, and after the locking rod is unlocked, it quickly drives the rotating frame to rotate around the two rotating shafts on both sides. The rotation of the rotating frame causes the moving contact to quickly separate from the stationary contact, thereby cutting off the circuit in a very short time and effectively preventing the leakage current from continuing to conduct. This leakage protection mechanism responds quickly and operates reliably, greatly reducing the risk of electric shock caused by leakage, effectively protecting the personal safety of users and the stable operation of electrical equipment, and significantly improving the safety of wall switches in actual use.

[0021] 2. Enhanced Safety Performance: By incorporating a protective mechanism, leakage current can be sensitively detected. Once leakage current is detected, the electromagnetic disconnecting mechanism responds rapidly. In conjunction with the disconnecting spring, it can drive the rotating frame to move in a very short time, quickly separating the moving contact from the stationary contact and cutting off the circuit. This effectively prevents electric shock accidents caused by leakage current, greatly protecting the personal safety of users and reducing the risk of electrical equipment being damaged by leakage current, thus strongly maintaining the stable operation of the electrical system.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 A schematic diagram of the protective mechanism.

[0025] Figure 3 A diagram illustrating the explosion that was used to protect the facility.

[0026] Figure 4 This is a structural diagram of the base plate cover and the rotating frame.

[0027] Figure 5 This is a schematic diagram of the electromagnetic disconnection mechanism.

[0028] Figure 6 This is a side view of the base plate and the rotating frame.

[0029] Figure 7 This is a schematic diagram of the contact assembly.

[0030] Figure 8 This is a structural diagram of the locking rod and the base plate.

[0031] Figure 9 This is a schematic diagram of the locking rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] This utility model provides a leakage protection mechanism for a wall switch.

[0035] In this embodiment, refer to Figure 1-9 The wall switch's leakage protection mechanism includes a switch housing 1 and a protection mechanism disposed within the switch housing 1, the protection mechanism comprising:

[0036] The bracket includes a circuit board 2, a base plate 3 connected to the circuit board 2, and a base plate cover 4 connected to the base plate 3. Two upright plates 5 are provided on one end of the base plate.

[0037] The rotating frame 6 is rotatably engaged with the base plate cover via rotating shafts 7 on both sides of the rotating frame, and contact slots 8 are provided on both sides of the rotating frame.

[0038] Locking rod 9 is set between two upright plates, and the bottom of the locking rod passes through the long slot 10 of the bottom plate to the bottom of the bottom plate as a trigger end 11. A positioning step 12 is provided on the side of the locking rod near the rotating frame, and a locking rod spring 13 is provided on the other side. The locking rod spring 13 has an elastic force to push the locking rod towards the side of the rotating frame.

[0039] The contact assembly includes a movable contact 14 and a stationary contact 15. One end of the movable contact is connected to the contact slot mentioned above, and the contact point of the movable contact extends through the space between the rotating frame and the base plate to above the contact point of the stationary contact. The stationary contact is connected to the circuit board.

[0040] An electromagnetic disconnection mechanism includes a coil frame 16, a magnetic yoke 17, and a moving ring 18. The moving ring is fitted around the outer ring of the coil frame 16, and the magnetic yoke is located at the bottom of the coil frame. The coil frame is connected to the circuit board via a support leg 19.

[0041] The break spring 20 is disposed between the rotating frame and the base plate near the locking rod side, and the break spring has an elastic force that tilts one end of the rotating frame upward.

[0042] By adopting the above technical solution, rapid and reliable leakage current detection and circuit disconnection can be achieved. The structural design of components such as the bracket, rotating frame, and locking rod ensures precise and smooth mechanism operation, improving product stability. At the same time, the relatively simple structure of each component reduces production costs, which is conducive to large-scale production and market promotion.

[0043] The specific working principle is as follows:

[0044] When a leakage occurs in the circuit where the wall switch is located, the current will change abnormally. At this time, the coil frame in the electromagnetic disconnecting mechanism is energized, and according to the principle of electromagnetic induction, the coil frame will generate a magnetic field. Since the moving ring is fitted around the outer ring of the coil frame, it will be displaced under the influence of the magnetic field due to the Ampere force. The displacement of the moving ring pushes the locking rod, which, under the push of the moving ring, overcomes the spring force and moves away from the rotating frame.

[0045] A positioning step is provided on the side of the locking bar near the rotating frame. When the locking bar moves, the positioning step disengages from the rotating frame. At the same time, the breaking spring activates. The breaking spring is located between the rotating frame and the base plate on the side near the locking bar, and it has a spring force that tilts one end of the rotating frame upwards. After the locking bar unlocks the rotating frame, the spring force drives the rotating frame to rotate around the two pivots on either side.

[0046] The rotating frame has contact slots on both sides, with one end of the moving contact connected to one of these slots. As the rotating frame rotates, the moving contact is moved. Its contact point, originally positioned above the stationary contact point, separates from the stationary contact after the frame rotates, thus cutting off the circuit. In this way, the electromagnetic disconnection mechanism triggers the locking lever, which in turn drives the rotating frame to move the moving contact. This achieves a rapid circuit-breaking protection function in the event of leakage, effectively preventing the leakage current from further endangering user safety and the normal operation of electrical equipment.

[0047] Specifically, the coil frame has lower steps 21 on both sides and an upper step 22 below the base plate. The lower steps and the upper steps form a groove 23 for guiding the moving ring.

[0048] In this embodiment, lower steps are provided on both sides of the coil frame, and upper steps are provided below the base plate. When the lower and upper steps correspond, they form a groove for guiding the moving ring. When the electromagnetic breaking mechanism is working, the moving ring moves under the magnetic field generated by the coil frame. The groove can accurately guide the moving ring's movement direction, ensuring its movement path is stable and accurate, thereby guaranteeing the operational accuracy of the electromagnetic breaking mechanism.

[0049] Specifically, a hook 25 is provided on the bottom of the base plate for connecting to the connection port 24 on the circuit board.

[0050] In this embodiment, a hook is provided below the base plate, and a corresponding connection port is provided on the circuit board. During installation, the hook can be directly connected to the connection port on the circuit board, achieving a quick and stable connection between the base plate and the circuit board. This connection method is simple and direct, using the cooperation between the hook and the connection port to reliably fix the base plate to the circuit board.

[0051] Specifically, the base plate cover is provided with two rotating shaft plates 26, the middle part of the rotating frame is connected to the two rotating shaft plates, and the rotating shaft is set on the middle part of the rotating frame and rotates in cooperation with the rotating groove 27 on the rotating shaft plate.

[0052] In this embodiment, two rotating shaft plates are provided on the base plate cover, and the rotating frame is embedded between the two rotating shaft plates in the middle. The rotating shaft in the middle of the rotating frame forms a rotating engagement with the rotating groove on the rotating shaft plate. This structural design changes the support and rotation method of the rotating frame, making the rotating frame more stable during rotation. Moreover, the force on the rotating frame is distributed through the central support, reducing wear caused by uneven force distribution.

[0053] Specifically, it also includes a reset button 28 set on the base plate cover, and a reset spring 29 is provided on the shaft of the reset button.

[0054] In this embodiment, a reset button is provided on the base plate cover, and a reset spring is provided on the shaft of the reset button. When the user manually presses the reset button, the switch can be reset. The reset spring is mainly used for resetting the reset button. When the protection mechanism is in the disconnected state, pressing down the reset button causes the shaft on the reset button to press against one side of the rotating frame, causing the rotating frame to re-engage with the positioning step, thus realizing the electrical connection between the moving contact and the stationary contact.

[0055] Specifically, the base plate is provided with a buckle 30, and the base plate cover is provided with a buckling step 31 that engages with the buckle.

[0056] In this embodiment, a retaining ring is provided on the base plate, and a corresponding engaging step is provided on the base plate cover. When installing the base plate cover and the base plate, the engaging step is aligned with the retaining ring and a certain pressure is applied. The engaging step will engage with the retaining ring, achieving a tight fit between the base plate cover and the base plate. This fastening method utilizes the mutual cooperation between the retaining ring and the engaging step to form a stable connection.

[0057] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. An earth leakage protection mechanism for a wall switch, comprising a switch housing, characterised in that: Also included is a protection mechanism disposed within the switch housing, the protection mechanism comprising: A bracket comprising a circuit board, a bottom plate connected to the circuit board, and a bottom plate cover connected to the bottom plate, two vertical plates disposed on one end of the bottom plate; A rotating frame rotatably connected to the bottom plate cover via rotating shafts disposed on both sides of the rotating frame, and a contact piece slot disposed on both sides of the rotating frame; A lock rod disposed between the two vertical plates, with the bottom of the lock rod extending from a long slot in the bottom plate to below the bottom plate as a trigger end, a positioning step disposed on one side of the lock rod close to the rotating frame, and a lock rod spring disposed on the other side of the lock rod, the lock rod spring having a spring force that pushes the lock rod to one side of the rotating frame; A contact piece assembly comprising a moving contact piece and a stationary contact piece, one end of the moving contact piece connected to the contact piece slot, and the other end of the moving contact piece extending from between the rotating frame and the bottom plate to above the contact point of the stationary contact piece, the stationary contact piece connected to the circuit board; An electromagnetic breaking mechanism comprising a coil former, a magnetic yoke, and a moving ring, the moving ring fitted around the outer ring of the coil former, the magnetic yoke disposed at the bottom of the coil former, and the coil former connected to the circuit board via a support leg; A breaking spring disposed between the rotating frame close to the lock rod and the bottom plate, the breaking spring having a spring force that lifts one end of the rotating frame upward.

2. The arc fault protection mechanism of claim 1, wherein: A lower step disposed on both sides of the coil former, an upper step disposed below the bottom plate, and a sliding slot formed by the lower step and the upper step for guiding the moving ring.

3. The arc fault protection mechanism of claim 1, wherein: A hook disposed below the bottom plate for connecting to a connection port on the circuit board.

4. The arc fault protection mechanism of claim 1, wherein: Two rotating shaft plates disposed on the bottom plate cover, the rotating frame connected into the two rotating shaft plates, a rotating shaft disposed on the middle of the rotating frame and rotatably connected to a rotating slot on the rotating shaft plate.

5. The arc fault protection mechanism of claim 1, wherein: A reset button disposed on the bottom plate cover, the shaft of the reset button having a reset spring disposed thereon.

6. The arc fault protection mechanism of claim 1, wherein: A clasp ring disposed on the bottom plate, and a clamping step disposed on the bottom plate cover for clamping the clasp ring. A clasp ring disposed on the bottom plate, and a clamping step disposed on the bottom plate cover for clamping the clasp ring.

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