CN211507551U

CN211507551U - Novel leakage protector

Info

Publication number: CN211507551U
Application number: CN202020092645.3U
Authority: CN
Inventors: 彭治权; 徐文泉; 马占友
Original assignee: Xiamen Ailifeng Electric Appliance Co ltd
Current assignee: Xiamen Ailifeng Electric Appliance Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-15
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a novel earth-leakage protector, including the casing with all be located the casing inside participate in, self-lock device and the shell fragment that moves that resets downwards, participate in and the shell fragment is provided with the contact of participating in and the shell fragment contact that can be closed each other respectively, self-lock device is used for control to participate in contact and shell fragment contact or separation. The self-locking device comprises a main button, a support, a tripping elastic sheet, a relay, a first reset mechanism and a second reset mechanism. When the external power supply supplies power, the main button drives the support and the elastic sheet to synchronously displace under the action of external force and the first reset mechanism, so that the contact of the elastic sheet and the contact of the pin contact can be contacted to realize electrification. When the load leaks electricity, the relay control ejector rod moves forward, then drives the tripping elastic sheet to move forward, thereby making the tripping elastic sheet break away from the support, the support moves downwards under the action of the second reset mechanism, so that the elastic sheet is separated from the support, and the elastic sheet drives the elastic sheet contact to reset downwards to move and separate from the pin contact so as to realize power-off.

Description

Novel leakage protector

Technical Field

The utility model relates to a power equipment technical field indicates a novel earth-leakage protector very much.

Background

The leakage protector, called leakage switch for short, is mainly used for protecting electric shock of human body with fatal danger when electric equipment has leakage fault, and has overload and short circuit protection functions. The existing leakage protectors in the market still have some disadvantages, and still have inconvenience and defects, so further improvement is urgently needed. Therefore, how to create a new leakage protector is also an object of great improvement in the industry.

In view of the above, the present inventors have intensively studied the above-mentioned drawbacks in the prior art.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, the technical problems in the above-described technology. Therefore, an object of the present invention is to provide a novel earth leakage protector.

In order to achieve the above object, the solution of the present invention is: a novel leakage protector comprises a shell, a pin, a self-locking device and a spring plate, wherein the pin, the self-locking device and the spring plate are all positioned in the shell, the pin and the spring plate are respectively provided with a pin contact and a spring plate contact which can be mutually closed, and the self-locking device is used for controlling the pin contact and the spring plate contact to be contacted or separated; the self-locking device comprises a main button, a bracket, a tripping elastic sheet which moves outwards in a resetting way and a relay; the main button sequentially penetrates through the shell and the support from top to bottom, the tripping elastic sheet is fixedly connected to the main button and abuts against the inner side wall of the support, the relay is provided with an ejector rod which is controlled by the relay to move transversely, two sides of the support are respectively provided with hanging pins, the hanging pins form a supporting surface of the elastic sheet, and the elastic sheet is pressed on the supporting surface; the self-locking device also comprises a first reset mechanism which enables the main button to reset upwards and a second reset mechanism which enables the support to reset downwards.

Based on the design, when an external power supply supplies power, the main button is pressed to drive the tripping elastic sheet to move downwards, and the top end of the tripping elastic sheet is abutted and matched with the inner end surface of the bracket through the elasticity of the tripping elastic sheet; then, the main button is released, the main button is reset by the first reset mechanism to move upwards through upward pressure so as to drive the bracket and the elastic sheet to move upwards synchronously, so that the contact of the elastic sheet is contacted with the contact of the pin so as to realize electrification, and the load enters a working state;

when the load leaks electricity, the relay controls the ejector rod to move forwards to enable the ejector rod to abut against the tripping elastic sheet so as to drive the tripping elastic sheet to move forwards, and therefore the tripping elastic sheet is separated from the inner end face of the support; and then, the support is reset by the second reset mechanism under the downward pressure to move downwards, the elastic sheet is separated from the support of the support hanging pin, and under the action of the elasticity of the support, the elastic sheet drives the elastic sheet contact to reset downwards to move, so that the elastic sheet contact and the pin contact are disconnected, the circuit is cut off, and the protection state is entered.

Further, still including being located the inside pin seat of casing, shell fragment and relay are all installed on the pin seat, the middle part at the pin seat is installed with support with the mode that can slide from top to bottom to the main button.

The circuit board is arranged at the top end of the pin base, and the top of the main button sequentially penetrates through the circuit board and the shell and extends outwards.

And the testing device further comprises an indicator lamp and a testing button which are positioned at the top of the shell, and the indicator lamp and the testing button are both electrically connected with the circuit board.

Furthermore, the magnetic ring is positioned in the shell and connected with a power line.

Furthermore, the bracket is oppositely provided with a blind hole, and the second reset mechanism is arranged in the blind hole.

Furthermore, the relay is also provided with a third reset mechanism which enables the ejector rod to reset and move transversely in the direction away from the tripping elastic piece.

Furthermore, the tripping elastic sheet is in a sigma shape, and the bottom end of the tripping elastic sheet is fixedly connected with the main button; when the power-on state is achieved, the main button is pressed down to drive the tripping elastic sheet to move downwards, and the top end of the tripping elastic sheet is abutted and matched with the inner end face of the support through the pressure of outward resetting movement of the tripping elastic sheet.

Furthermore, the support is provided with an opening, when the load leaks electricity, the ejector rod moves transversely along the direction close to the tripping elastic sheet under the control of the relay, and the ejector rod penetrates through the opening and abuts against the tripping elastic sheet to drive the tripping elastic sheet to move forwards, so that the tripping elastic sheet is ejected from the inner end face of the support.

Drawings

Fig. 1 is an exploded view of the earth leakage protector of the present invention;

fig. 2 is a cross-sectional view of the leakage protector in an initial state;

fig. 3 is a perspective view of the leakage protector in an initial state without a housing according to the present invention;

fig. 4 is a cross-sectional view showing the state where the leakage protector is pressed down the main button;

fig. 5 is a cross-sectional view of the leakage protector in the power-on state;

fig. 6 is a perspective view of the leakage protector in a power-on state without a housing of the present invention;

fig. 7 is a cross-sectional view showing an operating state of the earth leakage protector in the event of electric leakage according to the present invention;

fig. 8 is a cross-sectional view of the leakage protector in the leakage state of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 to 3, a novel leakage protector includes a housing 1, and a pin base 2, a pin 3, a spring plate 4 which is reset downwards and moves downwards, a self-locking device 5, a magnetic ring 6 and a circuit board 7 all located inside the housing 1. The housing 1 includes an upper cover 11 and a lower cover 12, and the upper cover 11 is provided with a first through slot 111. The circuit board 7 is disposed on the top end of the socket 2, and the circuit board 7 is provided with a second through groove 71. The elastic sheet 4 is arranged on the pin base 2, the pin 3 and the elastic sheet 4 are respectively provided with a pin contact 31 and an elastic sheet contact 41 which can be mutually closed, and the closed power-on can be realized after the contact, wherein the elastic sheet contact 41 is positioned below the pin contact 31, and the contact 41 is automatically reset downwards through the elastic structure of the elastic sheet 4, so that the separated power-off can be realized.

The self-locking device 5 is used for controlling the pin contact 31 and the spring contact 41 to be contacted or separated, and comprises a main button 51, a bracket 52, a tripping spring 53 which is reset to move outwards and a relay 54, wherein the tripping spring 53 is shaped like a sigma, the bottom end of the tripping spring 53 is fixedly connected to one side (the left side in the figure) of the main button 51, and the outer side of the top of the tripping spring 53 is abutted against and matched with the inner side wall 521 of the bracket 52. The two sides of the bracket 52 are respectively provided with a hanging leg 522, the hanging legs 522 form a supporting surface 5221 of the elastic sheet 4, and the elastic sheet 4 is pressed on the supporting surface 5221. The top of the main button 51 sequentially passes through the second through groove 71 of the circuit board 7 and the first through groove 111 of the upper cover 11 from bottom to top and extends outwards; the bottom of the main button 51 is inserted into a third through-groove 523 formed in the middle of the bracket 52, and the main button 51 and the bracket 52 are installed in the middle of the socket 2 in a vertically slidable manner. The self-locking device 5 further includes a first reset mechanism 55 for resetting the main button 51 upward and two second reset mechanisms 56 for resetting the bracket 52 downward, the first reset mechanism 55 is disposed between the bottom end of the main button 51 and the inner wall of the lower cover 12, and the two second reset mechanisms 56 are respectively disposed in the blind holes 524 oppositely disposed at the top end of the bracket 52.

The relay 54 is mounted on the socket 2, and the relay 54 is provided with a coil 541, a magnetic core 542, a plunger 543, and a third reset mechanism 544 for resetting and laterally moving the plunger 543 in a direction away from the trip leaf 53.

The first return mechanism 55, the second return mechanism 56, and the third return mechanism 544 are each configured by a compression spring.

The utility model discloses a work flow does: referring to fig. 4 to 6, when the external power supply supplies power, the main button 51 is pressed to drive the trip resilient piece 53 to move downward, the top end of the trip resilient piece 53 is abutted against the inner end surface 525 of the bracket 52 by the elasticity of the trip resilient piece 53 itself, and the first reset mechanism 55 is in a compressed state at this time; next, the main button 51 is released, the main button 51 resets the upward pressure through the first reset mechanism 55 to move upward, so as to drive the tripping elastic sheet 53 and the bracket 52 to move upward synchronously, and further drive the elastic sheet 4 to move upward, so that the elastic sheet contact 41 and the pin contact 31 are closed in contact, the circuit is switched on, the current sequentially enters the pin 3, the elastic sheet 4, the power line 100 and the load, and the load enters the working state at the moment.

Referring to fig. 7 and 8, when the load leaks electricity, since the magnetic ring 6 is connected to the power line 100, the magnetic ring 6 senses a signal first and feeds back the signal to the circuit board 7, the circuit board 7 sends out a command to energize the coil 541 to generate a magnetic field, and the magnetic core 542 moves forward (in the right direction in the figure) under the action of the magnetic field, thereby pushing the plunger 543 to move forward synchronously. The push rod 543 passes through the opening 526 formed in the side surface of the bracket 52 and abuts against the trip resilient sheet 53 to drive the trip resilient sheet 53 to move forward, so as to push the trip resilient sheet 53 away from the inner end surface 525 of the bracket 52. Subsequently, since the support 52 is separated from the support of the trip spring 53, the support 52 is reset by the second reset mechanism 56 to move downward by the downward pressure, so that the spring 4 is separated from the support surface 5221 of the hanger 522, and the spring 4 is separated from the hanger 522; then, the elastic sheet 4 drives the elastic sheet contact 41 to move downwards to be reset through the elastic structure of the elastic sheet, so that the elastic sheet is separated from the pin contact 31, and at the moment, the circuit is cut off and enters a protection state.

Since the circuit is cut off, the coil 541 is also deenergized, and the core 542 and the plunger 543 are moved backward (leftward in the drawing) by the third reset mechanism 544 until they are reset to the initial state, as shown in fig. 2.

In order to display the power supply or power failure signal, the earth leakage protector is also provided with an indicator light 8 positioned on the top of the upper cover 11, and the indicator light 8 is electrically connected with the circuit board 7.

The utility model discloses still be provided with a test button 9 that is located 11 tops of upper cover, test button 9 electricity is connected in circuit board 7. When the test button 9 is manually pressed in the power-on state, the circuit board 7 generates a simulated leakage signal, the coil 541 can be powered on, the pin contact 31 is separated from the spring contact 41, the effect of breaking is achieved, and the test button 9 has a test function.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A novel leakage protector is characterized in that: the self-locking device comprises a shell (1), a pin (3), a self-locking device (5) and a spring plate (4) which is reset downwards, wherein the pin (3) and the spring plate (4) are respectively provided with a pin contact (31) and a spring plate contact (41) which can be mutually closed, and the self-locking device (5) is used for controlling the pin contact (31) and the spring plate contact (41) to be contacted or separated; the self-locking device (5) comprises a main button (51), a bracket (52), a tripping elastic sheet (53) which moves outwards in a resetting way and a relay (54); the main button (51) sequentially penetrates through the shell (1) and the support (52) from top to bottom, the tripping elastic sheet (53) is fixedly connected to the main button (51) and abuts against the inner side wall (521) of the support (52), two sides of the support (52) are respectively provided with a hanging pin (522), the hanging pins (522) form a supporting surface (5221) of the elastic sheet (4), the elastic sheet (4) is pressed on the supporting surface (5221), and the relay (54) is provided with a top rod (543) controlled by the relay (54) to move transversely; the self-locking device (5) also comprises a first reset mechanism (55) which enables the main button (51) to move upwards in a reset mode and a second reset mechanism (56) which enables the support (52) to move downwards in a reset mode.

2. A novel earth-leakage protector as claimed in claim 1, characterized in that: the novel multifunctional electric connector is characterized by further comprising a pin base (2) located inside the shell (1), the elastic sheet (4) and the relay (54) are installed on the pin base (2), and the main button (51) and the support (52) are installed on the pin base (2) in a vertically sliding mode.

3. A novel earth-leakage protector as claimed in claim 2, characterized in that: still including being located inside circuit board (7) of casing (1), the top of pin seat (2) is arranged in to circuit board (7), circuit board (7) and casing (1) are passed in proper order to the top of main button (51) to outwards stretch out.

4. A novel earth-leakage protector as claimed in claim 3, characterized in that: the testing device is characterized by further comprising an indicator lamp (8) and a testing button (9) which are located on the top of the shell (1), wherein the indicator lamp (8) and the testing button (9) are both electrically connected with the circuit board (7).

5. A novel earth-leakage protector as claimed in claim 3, characterized in that: the magnetic ring is characterized by further comprising a magnetic ring (6) positioned inside the shell (1), and the magnetic ring (6) is connected with the power line (100).

6. A novel earth-leakage protector as claimed in claim 1, characterized in that: the bracket (52) is oppositely provided with a blind hole (524), and the second resetting mechanism (56) is arranged in the blind hole (524).

7. A novel earth-leakage protector as claimed in claim 1, characterized in that: the relay (54) is also provided with a third reset mechanism (544) which enables the ejector rod (543) to reset and move transversely in the direction away from the tripping elastic sheet (53).

8. A novel earth-leakage protector as claimed in claim 1, characterized in that: the tripping elastic sheet (53) is in a sigma shape, and the bottom end of the tripping elastic sheet is fixedly connected with the main button (51); when the power-on state is achieved, the main button (51) is pressed to drive the tripping elastic sheet (53) to move downwards, and the top end of the tripping elastic sheet (53) is abutted and matched with the inner end surface (525) of the bracket (52) through the pressure of outward resetting movement of the tripping elastic sheet (53).

9. A novel earth-leakage protector as claimed in claim 8, characterized in that: the support (52) is provided with an opening (526), when a load leaks electricity, the ejector rod (543) moves transversely in the direction close to the tripping elastic sheet (53) under the control of the relay (54), and the ejector rod (543) penetrates through the opening (526) and abuts against the tripping elastic sheet (53) to drive the tripping elastic sheet (53) to move forwards, so that the tripping elastic sheet (53) is ejected away from the inner end face (525) of the support (52).