CN214956708U - Safe and reliable leakage protection device - Google Patents
Safe and reliable leakage protection device Download PDFInfo
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- CN214956708U CN214956708U CN202121402316.5U CN202121402316U CN214956708U CN 214956708 U CN214956708 U CN 214956708U CN 202121402316 U CN202121402316 U CN 202121402316U CN 214956708 U CN214956708 U CN 214956708U
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- leakage protection
- earth leakage
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Abstract
The utility model belongs to the technical field of electric power protective equipment, concretely relates to safe and reliable's earth leakage protection device, include the casing and participate in, be provided with the circuit board in the casing, the circuit board is provided with dropout control circuit and dropout seat, participates in the electricity and connects in dropout control circuit and extend to the outside of casing from the circuit board, and the chamber that holds of dropout seat is provided with the dropout control module group that is used for electric connection dropout control circuit, and the lift groove of dropout seat is provided with the positioning seat of connecting in dropout control module group, and the positioning seat is provided with and participates in the movable contact spare that corresponds. The utility model discloses not only can improve earth leakage protection's security, still prolong the life of device effectively, prevent that the device from producing the influence of contact failure.
Description
Technical Field
The utility model belongs to the technical field of electric power protective equipment, concretely relates to safe and reliable's earth leakage protection device.
Background
In daily life, various electrical appliances usually have rated working current and working voltage, and meanwhile, in order to ensure the normal operation of the electrical appliances, the electrical appliances need to be ensured to work under safe current and voltage, and the electrical appliances need to be prevented from being influenced by the condition that the electrical appliances possibly generate electric leakage in work on the electrical appliances and the surrounding environment of the electrical appliances.
The residual current not only affects the normal operation of the electrical appliance, but also easily endangers the safety of human bodies and lives when the residual current is too large. Therefore, it is necessary to cut off the operating circuit of the electrical appliance when the electrical appliance is in a power leakage condition, so as to realize the safety protection of the electrical appliance and the personal life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the defects of the prior art, the safe and reliable leakage protection device is provided, the operation process is stable and controllable, the safety of leakage protection and the action efficiency of leakage protection can be effectively improved, and the service life of the protection device is also prolonged.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a safe and reliable's earth leakage protection device, includes the casing and participates in, be provided with the circuit board in the casing, the circuit board is provided with dropout control circuit and dropout seat, participate in the electricity connect in dropout control circuit, participate in the follow the circuit board extends to the outside of casing, the chamber that holds of dropout seat is provided with dropout control module group, dropout control module group is used for electric connection dropout control circuit, the lift groove of dropout seat is provided with the positioning seat, the positioning seat connect in dropout control module group, the positioning seat is provided with the movable contact spare, the movable contact spare with participate in the correspondence.
As a safe and reliable's earth leakage protection device's an improvement, the circuit board be provided with the electricity connect in tripping control circuit's electric leakage test circuit, the casing is provided with and is used for inserting electric leakage test circuit's electric leakage detection switch.
As a safe and reliable's earth leakage protection device's an improvement, the electric leakage detection switch is provided with the conductive film, the electric leakage detection switch passes through the conductive film inserts electric leakage test circuit.
As a safe and reliable's earth leakage protection device's an improvement, the casing is provided with and is used for inserting dropout control circuit's reset switch, reset switch is provided with reset spring, reset switch slide set up in the adjustment tank of positioning seat.
As a safe and reliable's earth leakage protection device's an improvement, the circuit board is provided with the operation monitoring circuit, the operation monitoring circuit be used for respectively with dropout control circuit with reset switch electric connection, the operation monitoring circuit can effectively monitor earth leakage protection device's operational aspect.
As a safe and reliable's earth leakage protection device's an improvement, the operation monitoring circuit is provided with signal early warning unit, signal early warning unit is used for demonstrating earth leakage protection device's operational aspect and provides early warning signal, signal early warning unit can be for LED light source or bee calling organ.
As a safe and reliable's earth leakage protection device's an improvement, dropout control module group includes coil former, induction coil and iron core, induction coil set up in the coil former, the one end of iron core set up in the mounting groove of coil former, the other end joint of iron core in the positioning seat.
As a safe and reliable's earth leakage protection device's an improvement, the movable contact spare set up in the release seat, the release seat is provided with and is used for fixing the tight piece of clamp of movable contact spare, the resilience portion of movable contact spare set up in the lift groove with press from both sides between the tight piece.
As a safe and reliable's earth leakage protection device's an improvement, the circuit board is provided with the mutual-inductor, the casing is provided with the power cord, the mutual-inductor with the power cord electricity respectively connect in dropout control circuit.
As a safe and reliable's earth leakage protection device's an improvement, the inside of casing is provided with and is used for fixing the spacing post of circuit board, spacing post with casing structure as an organic whole, the circuit board be provided with spacing post corresponds the spacing groove of matcing, the circuit board passes through spacing post with participate in and be fixed in the inside of casing.
The beneficial effects of the utility model reside in that: the utility model discloses a casing and participating in, be provided with the circuit board in the casing, the circuit board is provided with dropout control circuit and dropout seat, participate in the electricity and connect in dropout control circuit and extend to the outside of casing from the circuit board, participate in and be used for connecting the external power, the chamber that holds of dropout seat is provided with the dropout control module group that is used for electric connection dropout control circuit, the lift groove of dropout seat is provided with the positioning seat of connecting in dropout control module group, the positioning seat is provided with and participates in the movable contact member that corresponds, wherein, when there is corresponding residual current in the return circuit of dropout control circuit, under the control of dropout control circuit, the movable contact member that dropout control module group moved and drove the positioning seat breaks away from and participates in, thereby play earth leakage protection's effect.
Drawings
Fig. 1 is an assembly diagram of each component in the housing of the present invention.
Fig. 2 is an assembly structure diagram of the tripping seat, the tripping control module, the positioning seat and the movable contact element of the present invention.
Fig. 3 is an exploded schematic view of the trip block, the trip control module, the positioning block and the movable contact of the present invention.
Fig. 4 is an exploded view of the housing, the switch and the power cord of the present invention.
Fig. 5 is a circuit frame diagram of the present invention.
Fig. 6 is a circuit diagram of the present invention.
Wherein: 1-a shell; 2-a circuit board; 3-a release seat; 4-pins; 5-tripping control module; 6-positioning seat; 7-a movable contact element; 8-leakage detection switch; 9-a reset switch; 10-a return spring; 11-a transformer; 12-a power line; 13-a limiting column; 14-a lamp cover; 21-a trip control circuit; 22-leakage test circuit; 23-operation monitoring circuitry; 31-a containment chamber; 32-a lifting groove; 33-a clamping block; 51-a coil former; 52-iron core; 61-an adjustment tank; 70-a spring back; 511-mounting groove.
Detailed Description
As used in this specification and the appended claims, certain terms are used to refer to particular components, and it will be appreciated by those skilled in the art that a manufacturer may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings 1 to 6 and the specific embodiments, but the present invention is not limited thereto.
Example 1
A safe and reliable electrical leakage protection device, as shown in fig. 1-5, comprising:
a housing 1;
the circuit board 2 is provided with a tripping control circuit 21 and a tripping seat 3, the tripping seat 3 is fixedly connected to the circuit board 2, the tripping seat 3 is made of insulating materials, and the circuit board 2 and the tripping seat 3 are both arranged in the shell 1;
the pin 4 is electrically connected with the trip control circuit 21, the pin 4 extends from the circuit board 2 to the outside of the shell 1, and the bending part of the pin 4 is accommodated in the clearance groove at the bottom of the trip seat 3;
the tripping control module 5 is used for electrically connecting the tripping control circuit 21, and the tripping control module 5 is arranged in the accommodating cavity 31 of the tripping seat 3;
the positioning seat 6 is connected to the tripping control module 5, the positioning seat 6 is arranged in the lifting groove 32 of the tripping seat 3, and the positioning seat 6 can lift and slide in the lifting groove 32 of the tripping seat 3 under the control of the tripping control module 5;
the movable contact piece 7 corresponds to the pin 4, the movable contact piece 7 is arranged on the positioning seat 6, the movable contact piece 7 is provided with a movable contact, and the pin 4 is provided with a fixed contact corresponding to the movable contact of the movable contact piece 7.
Wherein, participate in 4 lug connection circuit board 2, can bear the heavy current, the ability that has stronger too big electric current, when participating in 4 and having connected the external power, and the return circuit in the protection device has produced corresponding residual current when taking place the condition of electric leakage promptly, tripping control circuit 21 can start the operation of tripping control module 5, thereby make tripping control module 5 high-efficient control positioning seat 6 go up and down to slide in the lift groove 32 of tripping seat 3, at this moment, the movable contact of movable contact 7 under the drive of positioning seat 6 with the stationary contact separation of participating in 4, thereby make the electrical apparatus of connecting in this protection device cut off its working circuit when producing the electric leakage condition high-efficiently safely.
In addition, in the earth leakage protection device, in order to enable the protection device to flexibly realize earth leakage protection and effectively prolong the service life of the earth leakage protection device, the casing 1 is provided with a reset switch 9 for accessing the tripping control circuit 21, the reset switch 9 is provided with a reset spring 10, and the reset switch 9 is slidably arranged in the adjusting groove 61 of the positioning seat 6.
Wherein, after reset switch 9 pushed down into the adjustment groove 61 of positioning seat 6 and inserted the dropout control circuit 21, earth leakage protection device can normally operate, in the earth leakage protection process, when dropout control module 5 high-efficient control positioning seat 6 goes up and down to slide in the lift groove 32 of dropout seat 3, the slip of positioning seat 6 can arouse reset spring 10's of reset switch 9 tensile, thereby make reset switch 9 bounce and with the trip control circuit 21 open circuit, thereby make the electrical apparatus of connecting in this protection device cut off its circuit of work high-efficiently safely when producing the electric leakage condition, simultaneously, after electric leakage phenomenon eliminated, make reset switch 9 push down into the adjustment groove 61 of positioning seat 6 and inserted the dropout control circuit 21 back again, earth leakage protection device can continue normal operating.
In the leakage protection device, in order to effectively monitor the operation condition of the leakage protection device, the circuit board 2 is provided with an operation monitoring circuit 23, the operation monitoring circuit 23 is used for being electrically connected with the tripping control circuit 21 and the reset switch 9 respectively, as shown in fig. 6, the trip control circuit 21 includes a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C2, a capacitor C3, a capacitor C5, a diode D2, a diode D4, a diode D6, a diode D8, a diode D9, a triode Q1, and an FM2519 chip, which are electrically connected, the operation monitoring circuit 23 includes a resistor R10 and an LED light source, in the case where the reset switch 9, the trip control circuit 21 and the operation monitoring circuit 23 are turned on, whether the earth leakage protection device normally operates can be fed back through the LED light source of the operation monitoring circuit 23.
Preferably, in the earth leakage protection device, the operation monitoring circuit 23 is provided with a signal early warning unit, wherein the signal early warning unit is used for displaying the operation condition of the earth leakage protection device and providing an early warning signal, the signal early warning unit may be LED light sources with different colors, so that the LED light sources with different colors represent different warning signals to feed back different operation states of the earth leakage protection device, and the housing 1 is provided with the lamp cover 14 corresponding to the LED light sources.
Among each component part of the leakage protection device, the tripping control module 5 comprises a coil rack 51, an induction coil and an iron core 52, the induction coil is arranged on the coil rack 51, one end of the iron core 52 is arranged in a mounting groove 511 of the coil rack 51, the other end of the iron core 52 is clamped in the positioning seat 6, when leakage occurs, the induction coil of the coil rack 51 generates magnetism under the operation of the tripping control circuit 21, and the iron core 52 drives the positioning seat 6 to move, so that a movable contact of the movable contact 7 is separated from a static contact of the pin 4 under the driving of the positioning seat 6, the reset switch 9 bounces and is disconnected with the tripping control circuit 21, and an electric appliance connected to the protection device efficiently and safely cuts off a circuit of the work when the leakage condition occurs.
Preferably, in the earth leakage protection device, the movable contact member 7 is arranged on the trip block 3, the trip block 3 is provided with the clamping block 33 for fixing the movable contact member 7, and the resilience portion 70 of the movable contact member 7 is arranged between the lifting groove 32 and the clamping block 33, wherein the trip block 3 and the plurality of clamping blocks 33 are integrally formed, the assembly efficiency is high, and the resilience of the resilience portion 70 of the movable contact member 7 is stronger under the clamping and fixing action of the plurality of clamping blocks 33, so that the movable contact of the movable contact member 7 is efficiently separated from the static contact of the pin 4 under the action of the resilience portion 70 and the positioning seat 6.
In addition, in the earth leakage protection device, the circuit board 2 is provided with a transformer 11, the housing 1 is provided with a power line 12, the transformer 11 and the power line 12 are respectively electrically connected to the trip control circuit 21, wherein the transformer 11 is a residual current transformer, and the power line 12 is used for connecting to a corresponding electrical appliance.
Preferably, in order to ensure that the circuit board 2 is firmly fixed, in the leakage protection device, the inside of the housing 1 is provided with a plurality of limiting posts 13 for fixing the circuit board 2, wherein the number of the limiting posts 13 is multiple, the housing 1 and the plurality of limiting posts 13 are of an integral structure, the circuit board 2 is provided with a limiting groove correspondingly matched with the limiting posts 13, and the circuit board 2 is fixed inside the housing 1 through the plurality of limiting posts 13 and the pins 4.
Example 2
The difference between this embodiment and embodiment 1 is that, in the use and operation process of the earth leakage protection device, in addition to being able to realize efficient disconnection of the operating circuit of the electrical appliance when the electrical appliance generates an earth leakage situation, it is also necessary to be able to simulate the earth leakage situation at any time to detect the operation performance of the earth leakage protection device. Wherein, the circuit board 2 is provided with the electric leakage test circuit 22 that is electrically connected to the trip control circuit 21, the casing 1 is provided with the electric leakage detection switch 8 that is used for inserting the electric leakage test circuit 22, when the electric leakage detection switch 8 inserts the electric leakage test circuit 22, the condition that the electric leakage takes place promptly for the corresponding residual current can be produced to the return circuit in the protection device, the trip control circuit 21 responds rapidly, thereby start the trip control module 5, positioning seat 6 and movable contact 7, make the circuit in the device reach the effect of broken circuit, and, the electric leakage detection switch 8 can be key switch or knob switch.
As shown in fig. 6, the leakage test circuit 22 includes a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C4, a diode D1, a diode D10, and a rectifier bridge D3, which are electrically connected, the leakage detection switch 8 is S2 in the circuit diagram, when the leakage detection switch 8 is not connected to the leakage test circuit 22, the leakage test circuit 22 is in an open circuit state, and when the leakage detection switch 8 is connected to the leakage test circuit 22, the leakage test circuit 22 and the trip control circuit 21 are turned on together, and the trip control circuit 21 is enabled to respond quickly.
Other structures of this embodiment are the same as those of embodiment 1, and are not described herein again.
Example 3
The difference between this embodiment and embodiment 2 is that the leakage detecting switch 8 is provided with a conductive film, the leakage detecting switch 8 is connected to the leakage testing circuit 22 through the conductive film, and the conductive film can be a carbon film or a metal film, and meanwhile, the conductive film has good conductivity and large surface area, and can effectively avoid the influence of poor contact generated by the leakage detecting switch 8 during the leakage testing.
Other structures of this embodiment are the same as those of embodiment 2, and are not described again here.
Obviously, the utility model discloses an assembly efficiency is high, not only can improve earth leakage protection's security, has still prolonged the life of device effectively, has prevented that the device from producing the influence of contact failure.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A safe and reliable earth leakage protection device, comprising:
a housing (1);
the circuit board (2) is provided with a tripping control circuit (21) and a tripping seat (3) and is arranged in the shell (1);
a pin (4) electrically connected to the trip control circuit (21) and extending from the circuit board (2) to the outside of the housing (1);
the tripping control module (5) is electrically connected with the tripping control circuit (21) and arranged in the accommodating cavity (31) of the tripping seat (3);
the positioning seat (6) is connected with the tripping control module (5) and is arranged in a lifting groove (32) of the tripping seat (3);
and the movable contact piece (7) corresponds to the pin (4) and is arranged on the positioning seat (6).
2. A safe and reliable earth leakage protection device as claimed in claim 1, wherein: the circuit board (2) is provided with an electric leakage test circuit (22) electrically connected with the tripping control circuit (21), and the shell (1) is provided with an electric leakage detection switch (8) used for being connected into the electric leakage test circuit (22).
3. A safe and reliable earth leakage protection device as claimed in claim 2, wherein: the leakage detection switch (8) is provided with a conductive film, and the leakage detection switch (8) is connected to the leakage test circuit (22) through the conductive film.
4. A safe and reliable earth leakage protection device as claimed in claim 1, wherein: the shell (1) is provided with a reset switch (9) used for being connected into the tripping control circuit (21), the reset switch (9) is provided with a reset spring (10), and the reset switch (9) is arranged in an adjusting groove (61) of the positioning seat (6) in a sliding mode.
5. A safe and reliable earth leakage protection device as claimed in claim 4, wherein: the circuit board (2) is provided with an operation monitoring circuit (23), and the operation monitoring circuit (23) is used for being electrically connected with the tripping control circuit (21) and the reset switch (9) respectively.
6. A safe and reliable earth leakage protection device as claimed in claim 5, wherein: the operation monitoring circuit (23) is provided with a signal early warning unit.
7. A safe and reliable earth leakage protection device as claimed in claim 1, wherein: dropout control module group (5) includes coil former (51), induction coil and iron core (52), induction coil set up in coil former (51), the one end of iron core (52) set up in mounting groove (511) of coil former (51), the other end joint of iron core (52) in positioning seat (6).
8. A safe and reliable earth leakage protection device as claimed in claim 1, wherein: the movable contact piece (7) is arranged on the trip seat (3), the trip seat (3) is provided with a clamping block (33) used for fixing the movable contact piece (7), and a rebound part (70) of the movable contact piece (7) is arranged between the lifting groove (32) and the clamping block (33).
9. A safe and reliable earth leakage protection device as claimed in claim 1, wherein: the circuit board (2) is provided with a mutual inductor (11), the shell (1) is provided with a power line (12), and the mutual inductor (11) and the power line (12) are respectively and electrically connected with the tripping control circuit (21).
10. A safe and reliable earth leakage protection device as claimed in claim 1, wherein: the inside of casing (1) is provided with and is used for fixing spacing post (13) of circuit board (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121402316.5U CN214956708U (en) | 2021-06-23 | 2021-06-23 | Safe and reliable leakage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121402316.5U CN214956708U (en) | 2021-06-23 | 2021-06-23 | Safe and reliable leakage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214956708U true CN214956708U (en) | 2021-11-30 |
Family
ID=79049782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121402316.5U Active CN214956708U (en) | 2021-06-23 | 2021-06-23 | Safe and reliable leakage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214956708U (en) |
-
2021
- 2021-06-23 CN CN202121402316.5U patent/CN214956708U/en active Active
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