WO2019037462A1

WO2019037462A1 - Wall switch with overcurrent protection function

Info

Publication number: WO2019037462A1
Application number: PCT/CN2018/085076
Authority: WO
Inventors: 黄普添
Original assignee: 佛山市汇莱德电器有限公司
Priority date: 2017-08-19
Filing date: 2018-04-28
Publication date: 2019-02-28
Also published as: CN107359089A; CN107359089B

Abstract

Disclosed is a wall switch with an overcurrent protection function. The wall switch comprises a housing, and a conductive circuit and an on-off key arranged on the housing, and further comprises an overcurrent protector, wherein the overcurrent protector is connected to the conductive circuit in series, and when a current flowing through the overcurrent protector is equal to or greater than a pre-set current value, the overcurrent protector is disconnected from the conductive circuit. According to the wall switch with an overcurrent protection function, the overcurrent protector is arranged on the conductive circuit, and the power supply is automatically cut off when overcurrent occurs, thus effectively protecting electric appliances used in series with the wall switch and realizing safer use of same.

Description

Wall switch with overcurrent protection

Technical field

The invention relates to a switch, in particular to a wall switch with an overcurrent protection function.

Background technique

At present, the wall switches on the market only have the function of controlling the circuit switch, but in the process of using the home circuit, the use voltage will be unstable due to various reasons, that is, when the electric appliance is in use, the current will fluctuate, affecting the use of the electric appliance, and even Damage to the appliance, although the home usually sets the air switch at the main gate, but this air switch is for the entire home circuit, and with the increase in the number of appliances used in the home, the rated current of the air switch is larger, but not for a single appliance. Stream protection.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art described above, and to provide a simple and reasonable structure, and an overcurrent protection device is disposed in the wall switch to automatically open the circuit when the current flowing through the wall switch exceeds a preset value. Wall switch.

The object of the invention is achieved in this way:

A wall switch with overcurrent protection, including a housing, and a conductive line and an opening key disposed on the housing, and an overcurrent protector connected in series on the conductive line and flowing through the flow protector When the current is equal to or exceeds the current preset value, the overcurrent protector is disconnected from the conductive line; this wall switch with overcurrent protection function is automatically set when the current is overcurrent by setting an overcurrent protector on the conductive line. Power failure, effective protection of the electrical appliances used in series with the wall switch, safer to use.

The object of the present invention can also be solved by the following technical measures:

As a more optimized solution, the opening key is opposite or adjacent to the overcurrent protector, and the overcurrent protector action pushes the key action to open the key to disconnect the electric circuit, and the overcurrent protector is always in the normally closed state in the conductive line. When the overcurrent protector detects the overcurrent of the conductive line, it actively triggers and pushes the key action, and disconnects the conductive line through the opening key to realize the function of the overcurrent protection function.

As a better solution, the overcurrent protector is an overcurrent protection bimetal, the overcurrent protection bimetal is provided with a movable contact, and the conductive circuit has a conductive block corresponding to the overcurrent protection bimetal position, and is electrically conductive. The block abuts the moving contact on the overcurrent protection bimetal, and when the current flowing through the overcurrent protection bimetal is equal to or exceeds the current preset value, the overcurrent protection bimetal is deformed, the movable contact moves, and leaves Corresponding conductive blocks, thereby breaking the connection to the conductive lines. The overcurrent protection bimetal is fixed on the shell, and the middle part is hollowed out with a spring arm. The overcurrent protection bimetal deformation is the uplift of the elastic arm, and the elastic arm pushes the key action, thereby breaking the conductive line through the opening key. The purpose of the stream protection function.

As a better solution, the overcurrent protection bimetal is in contact with or close to the switch key, that is, the flow protection bimetal pushes the key open circuit.

Preferably, the overcurrent protection bimetal is connected with a first connection copper post, the conductive block comprises a second connection copper post and a conductive elastic piece connected to each other, and the overcurrent protection movable contact on the bimetal is overcurrent protection The first wire copper column and the second wire copper column are respectively connected to the conductive line, and the opening key is often pressed down by the conductive elastic piece to make the conductive elastic piece away from the overcurrent protection moving contact to disconnect the conductive line. Purpose, the overcurrent protection moving contact and the conductive elastic piece are elastic contact to extend the service life of the wall switch.

As a more preferable solution, the opening key is provided with a circlip, and the other end of the circlip is opposite to the housing, and the circlip has a sense of passage when the opening key is pressed, and the use experience is better.

As a better solution, the bottom of the opening key is provided with a push rod, and the push rod is opposite to or close to the conductive elastic piece, and the conductive elastic piece is pressed down by the push rod to achieve the purpose of disconnecting the conductive line.

Preferably, the conductive circuit is further provided with a socket assembly, a micro switch and a micro switch actuation component, one end of the micro switch actuation component is connected to the socket assembly, and the other end is adjacent or close to the micro switch. The micro switch is connected in series on the conductive line, and the micro switch is normally open. The micro switch and the micro switch touch component form a safety device of the socket assembly to improve the safety performance of the socket assembly.

Preferably, the socket assembly comprises three elastic socket clip springs mounted on the housing in a shape of a figure, the micro switch actuation assembly comprising a fixing seat, a pressing block, a tension spring and a touch plate, and a fixing seat Attached to one of the elastic socket retaining springs, the tension spring is disposed between the fixed seat and the touch panel in an oblique direction, and one end of the touch panel is pivotally connected with the fixed seat, and the upper and lower movable manners of the pressing block are placed in the elastic state. At the bottom of the socket circlip, the bottom surface of the pressure block is opposite to the tension spring, and the touch panel is adjacent to or opposite to the micro switch. The three-phase plug is inserted into the elastic socket circlip, and when the foreign object is inserted into the elastic socket circlip, the foreign object cannot completely press the pressure block. The touch panel is in a state of being separated from the micro switch, that is, the elastic socket retainer is in a non-energized state to avoid an accident of electric shock.

Preferably, the housing comprises an overcurrent protection bottom case, a socket bottom case, and a panel, wherein the overcurrent protection bottom case is provided with an overcurrent protection bimetal, a first connection copper post and a second connection a copper pillar, a socket assembly, a micro switch and a micro switch actuation component are disposed in the socket bottom shell, and the movable key is mounted on one side of the panel, and the socket component hole is disposed on the other side of the panel, below the panel On the bottom case of the socket, a sliding type anti-shock protection protection frame is arranged above the elastic socket retaining spring, the anti-electric shock protection protection frame is provided with a tilting surface, and the anti-electric shock protection protection frame is also connected with a return spring, and the return spring is further One end is opposite to the bottom case of the socket, and the anti-electric shock protection protection frame prevents foreign matter from being inserted into the elastic socket of the elastic socket, thereby improving the safety of the wall switch.

The beneficial effects of the present invention are as follows:

(1) This wall switch with overcurrent protection function is provided with an overcurrent protector on the conductive line to automatically cut off the power when the current is overcurrent. It is safer to protect the electrical appliance used in series with the wall switch.

(2) Secondly, the overcurrent protector is an overcurrent protection bimetal. When the overcurrent protection bimetal is overcurrent in the conductive line, it pushes the key to open and disconnect the conductive line through deformation, and the overcurrent protection bimetal can also Reset, or through the key reset, this design not only makes the wall switch have the function of overcurrent protection, but also the user can understand the phenomenon of current overcurrent of the conductive line through the change of the key, and eliminate the safety hazard in time.

(3) Furthermore, the wall switch with overcurrent protection function is also provided with a socket assembly, that is, a three-phase socket, and a flexible socket circlip of the socket assembly, which is protected not only by the micro switch but also by the micro-switch and the micro switch. A resettable anti-shock insulation protection frame is also provided to prevent foreign matter from being inserted into the electric shock, and the multi-layer protection greatly improves the safety of the product.

DRAWINGS

1 is a schematic view showing the front structure of a wall switch with an overcurrent protection function according to the present invention.

2 is a schematic view showing the back structure of a wall switch with an overcurrent protection function according to the present invention.

3 is a schematic exploded view of a wall switch with an overcurrent protection function according to the present invention.

4 is a schematic view showing another disassembled state of the wall switch with overcurrent protection function according to the present invention.

FIG. 5 is a schematic view showing the structure of the key back surface of the wall switch with overcurrent protection function according to the present invention.

Figure 6 is a cross-sectional view taken along line A-A of Figure 1.

Figure 7 is a cross-sectional view taken along line B-B of Figure 1.

Figure 8 is a cross-sectional view taken along line C-C of Figure 1.

Detailed ways

The invention will now be further described with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 to FIG. 8, the wall switch with overcurrent protection function includes a housing 1, and a conductive line 111 and an opening key 2 disposed on the housing 1, and an overcurrent protector 3, which is overcurrent. The protector 3 is connected in series on the conductive line 111. When the current flowing through the flow protector 3 equals or exceeds the current preset value, the overcurrent protector 3 is disconnected from the conductive line 111.

The opening key 2 is opposite to or adjacent to the overcurrent protector 3, and the overcurrent protector 3 acts to push the opening key 2 to cause the opening key 2 to disconnect the electric line.

The overcurrent protector 3 is an overcurrent protection bimetal 30. The overcurrent protection bimetal 30 is provided with a movable contact 31. The conductive line 111 is provided with a conductive block 4 corresponding to the overcurrent protection bimetal 30. The conductive block 4 is in contact with the movable contact 31 on the overcurrent protection bimetal 30. When the current flowing through the overcurrent protection bimetal 30 is equal to or exceeds the current preset value, the overcurrent protection bimetal 30 is deformed. The movable contact 31 operates and leaves the corresponding conductive block 4, thereby disconnecting the conductive line 111. That is, the overcurrent protection bimetal 30 is in contact with or close to the switch key 2.

The overcurrent protection bimetal 30 is connected with a first connection copper post 5, and the conductive block 4 includes a second connection copper post 42 and a conductive elastic piece 41 connected to each other, and the overcurrent protection bidirectional protection on the bimetal 30 The point 31 is in elastic contact with the conductive elastic piece 41, and the first wiring copper post 5 and the second wiring copper post 42 are respectively connected to the conductive line 111.

A snap spring 6 is disposed on the switch key 2, and the other end of the snap spring 6 abuts against the housing 1.

The bottom of the opening key 2 is provided with a push rod 21, and the push rod 21 is opposite to or close to the conductive elastic piece 41.

The conductive line 111 is further provided with a socket assembly 7, a micro switch 8 and a micro switch actuation component 9, one end of the micro switch actuation component 9 is connected to the socket assembly 7, and the other end is adjacent to the micro switch 8 or Similarly, the micro switch 8 is connected in series on the conductive line 111, and the micro switch 8 is normally open.

The socket assembly 7 includes three elastic socket retaining springs 70 mounted on the housing 1 in a zig-zag manner. The micro switch actuation assembly 9 includes a fixing base 91, a pressing block 94, a tension spring 92 and a touch panel 93. The fixing base 91 is connected to one of the elastic socket retaining springs 70. The tension spring 92 is disposed between the fixing base 91 and the touch panel 93 in an oblique direction. One end of the touch panel 93 is pivotally connected to the fixing base 91, and the pressing block 94 is connected. The lower movable mode is placed at the bottom of the elastic socket retaining spring 70, and the bottom surface of the pressing block 94 abuts against the tension spring 92, and the touch panel 93 is adjacent to or opposite to the micro switch 8.

The housing 1 includes an overcurrent protection bottom case 11, a socket bottom case 12, and a panel 10, and the overcurrent protection bottom case 11 is provided with an overcurrent protection bimetal 30, a first connection copper post 5 and a second The wiring copper column 42 is provided with a socket assembly 7, a micro switch 8 and a micro switch actuation component 9 on the side of the panel 10, and the movable key 2 is mounted on one side of the panel 10, and the other side of the panel 10 is disposed. There is a socket assembly 7 hole, and a socket bottom cover 12 under the panel 10, wherein a resilient socket retaining spring 70 is disposed above the sliding type anti-shock insulating protection frame 71, and the anti-shock insulating protection frame 71 is provided with a tilting surface 710 The anti-shock insulation protection frame 71 is also connected to a return spring 72, and the other end of the return spring 72 is abutted against the socket bottom case 12.

In this embodiment, the overcurrent protector 3 is an overcurrent protection bimetal 30, which is connected in series in the conductive line 111 for detecting whether the conductive line 111 is overcurrent, and the overcurrent protection bimetal 30 is overcurrent when the conductive line 111 is overcurrent. The deformation pushes the key 2 to open the circuit, fully utilizes the function of the opening key 2 itself to open the conductive line 111, and the simplified wall switch structure, that is, the overcurrent protection bimetal 30 is provided with the elastic arm 31, and the opening key 2 corresponds to The elastic arm 31 of the flow protection bimetal 30 is provided with a protrusion 22, and the overcurrent protection bimetal 30 is deformed, that is, the elastic arm 31 is upturned, the elastic arm 31 abuts against the protrusion 22 and pushes the protrusion 22 upward, the switch The push rod 21 at the other end of the key 2 is moved downward, thereby pushing the conductive elastic piece 41 downward to realize the function of breaking the circuit.

When the three-phase plug is inserted into the socket assembly 7, first, a plug is abutted against the tilting surface 710 of the anti-shock insulating protection frame 71, the plug continues to be inserted, and the anti-shock insulating protection frame 71 is inserted into the elastic socket retaining spring 70. When the other plug is in contact with the pressing block 94, when the three-phase plug is fully inserted into the elastic socket retaining spring 70, the pressing block 94 presses the tension spring 92, and one end of the touch panel 93 pivots around the fixing seat (91), and the other end Abutting the micro switch 8, the elastic socket retainer 70 is energized, and after the three-phase plug is pulled out from the elastic socket retainer 70, the tension spring 92 pulls up the touch panel 93, that is, the touch panel 93 is separated from the micro switch 8. The current is disconnected, and the return spring 72 pushes the anti-shock insulation protection frame 71 back over the elastic socket retainer 70.

Claims

A wall switch with overcurrent protection, comprising a housing (1), and a conductive line (111) and an opening key (2) disposed on the housing (1), characterized in that it further comprises an overcurrent protector ( 3), the overcurrent protector (3) is connected in series on the conductive line (111), and the current flowing through the flow protector (3) is equal to or exceeds the current preset value, the overcurrent protector (3) is disconnected and the conductive line (111) connection.
The wall switch with overcurrent protection according to claim 1, characterized in that the opening key (2) is opposite or adjacent to the overcurrent protector (3).
The wall switch with overcurrent protection according to claim 2, wherein the overcurrent protector (3) is an overcurrent protection bimetal (30), and the overcurrent protection bimetal (30) is disposed. The movable contact (31) and the overcurrent protection bimetal (30) on the conductive line (111) are provided with a conductive block (4), a conductive block (4) and an overcurrent protection bimetal (30). The movable contact (31) abuts, and when the current flowing through the overcurrent protection bimetal (30) is equal to or exceeds the current preset value, the overcurrent protection bimetal (30) is deformed, and the movable contact (31) Acting and leaving the corresponding conductive block (4), thereby disconnecting the conductive line (111).
The wall switch with overcurrent protection according to claim 3, characterized in that the overcurrent protection bimetal (30) is opposite or close to the opening key (2).
The wall switch with overcurrent protection function according to claim 4, wherein the overcurrent protection bimetal (30) is connected with a first connection copper post (5), and the conductive block (4) comprises interconnected The second wiring copper column (42) and the conductive elastic piece (41), the overcurrent protection moving contact (31) on the overcurrent protection bimetal (30) is in elastic contact with the conductive elastic piece (41), and the first wiring copper column (5) and the second wiring copper post (42) are respectively connected to the conductive line (111).
A wall switch with an overcurrent protection function according to claim 5, wherein the opening key (2) is provided with a circlip (6), and the other end of the circlip (6) abuts against the casing (1).
The wall switch with overcurrent protection function according to claim 6, wherein the bottom of the opening key (2) is provided with a push rod (21), and the push rod (21) is opposite or close to the conductive elastic piece (41). .
The wall switch with overcurrent protection function according to claim 7, wherein the conductive circuit (111) is further provided with a socket assembly (7), a micro switch (8) and a micro switch actuation component (9). The one end of the micro switch actuation component (9) is connected to the socket assembly (7), the other end is adjacent to or close to the micro switch (8), and the micro switch (8) is connected in series to the conductive line (111) Upper, and the micro switch (8) is normally open.
A wall switch with overcurrent protection according to claim 8, wherein said socket assembly (7) comprises three elastic socket retaining springs (70) mounted on the housing (1) in a figure-like manner The micro switch actuation assembly (9) includes a fixing base (91), a pressing block (94), a tension spring (92) and a touch panel (93), and the fixing base (91) is connected to one of the elastic socket retaining springs (70). The tension spring (92) is disposed between the fixing seat (91) and the touch panel (93) in an oblique direction, and one end of the touch panel (93) is pivotally connected to the fixing seat (91), and the pressing block (94) The upper movable mode is placed at the bottom of the elastic socket retainer (70), the bottom surface of the pressing block (94) is opposite to the tension spring (92), and the touch panel (93) is adjacent to or opposite to the micro switch (8). .
The wall switch with overcurrent protection according to claim 9, wherein the housing (1) comprises a overcurrent protection bottom case (11), a socket bottom case (12), and a panel (10). The overcurrent protection bottom case (11) is provided with an overcurrent protection bimetal (30), a first connection copper post (5) and a second connection copper post (42), and the socket bottom case (12) is disposed There are a socket assembly (7), a micro switch (8) and a micro switch actuation component (9), a movable key (2) is mounted on one side of the panel (10), and the other side of the panel (10) is provided a socket assembly hole (13), a socket bottom case (12) below the panel (10), wherein a resilient socket retainer (70) is provided with a sliding anti-shock protection protection frame (71) for preventing electric shock insulation The protection frame (71) is provided with a tilting surface (710), and the anti-electric shock protection protection frame is also connected with a return spring (72), and the other end of the return spring (72) is opposite to the socket bottom casing (12).