CN218676989U - Leakage protector - Google Patents

Abstract

The utility model provides a leakage protector belongs to urgent protection circuit arrangement technical field, include: the circuit board is provided with a conducting ring and a resistor disc, and the conducting ring and the resistor disc are arranged at intervals; the electric brushes are connected between the conducting ring and the resistor disc in a sliding mode, and contact pins for contacting with the conducting ring and the resistor disc are arranged on the electric brushes respectively; different positions of the resistance card can generate different analog voltages, and the conducting ring is used for transmitting signals of the analog voltages to the microprocessor; the utility model discloses a leakage protector, the user is through the brush that slides, can one step put in place carry out the settlement of on-time, and the simple operation is rapid, and owing to adopt mechanical structure, the cost is lower.

Description

Leakage protector

Technical Field

The utility model relates to an emergency protection circuit device technical field, concretely relates to earth-leakage protector.

Background

In the existing production and life, the use of some electric power equipment is limited in time and needs to be closed in time after the use.

The existing electronic leakage protector needs to set the required power-on time by repeatedly pressing the key through the setting of the display time of the nixie tube, and has the disadvantages of troublesome operation, complex structure and high cost.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the present invention is to overcome the earth-leakage protector in the prior art, and the power-on time needs to be set by the key, so as to provide an earth-leakage protector capable of setting the power-on time by mechanical means.

In order to solve the technical problem, the utility model provides a leakage protector, include: the electric brush is connected on the circuit board in a sliding manner, an actuating piece is arranged on the shell, and the electric brush is connected with the actuating piece; the circuit board is provided with a conducting ring and a resistor disc, and the conducting ring and the resistor disc are arranged at intervals;

the electric brush is connected between the conducting ring and the resistor disc in a sliding mode, and contact pins for contacting with the conducting ring and the resistor disc are arranged on the electric brush respectively;

different positions of the resistance card can generate different analog voltages, and the conducting ring is used for transmitting signals of the analog voltages to the microprocessor.

Optionally, the resistor sheet has a notch for not generating an analog voltage, and the notch is suitable for accommodating the contact pin of the brush.

Optionally, the brush has a first contact pin and a second contact pin, the first contact pin is configured to slide on the conductive ring, and the second contact pin is configured to slide on the resistive sheet.

Optionally, a hand feeling mechanism is disposed between the actuating member and the housing, and the hand feeling mechanism includes: the sliding piece is driven by the elastic piece to be inserted into the positioning groove; the positioning groove is provided with a plurality of positioning grooves, and the sliding piece is suitable for being sequentially inserted into the plurality of positioning grooves under the driving of the actuating piece.

Optionally, the feel mechanism comprises: the fixing seat is connected to the actuating piece, a spring counter bore is formed in the side wall of the fixing seat, and the elastic piece is arranged in the spring counter bore.

Optionally, the fixing base is connected to the actuating element by a snap-fit connection, and the fixing base is provided with a slot having a hanging surface; the actuating piece is provided with a clamping column extending towards the clamping groove, and the top end of the clamping column is provided with a hook.

Optionally, the actuator is a knob, and the conductive ring and the resistive sheet on the circuit board are concentrically arranged in an annular structure.

Optionally, the circuit board is provided with a positioning hole, the lower end of the knob is provided with a positioning shaft for inserting into the positioning hole, one side of the positioning shaft is provided with at least one limiting boss, and the electric brush is provided with a connecting hole for matching with the limiting boss.

Optionally, an annular seal is provided between the knob and the housing.

Optionally, the lower end of the knob has an inner annular wall, the housing has an annular boss thereon opposite to the inner annular wall, the upper surface of the annular seal has an upper annular opening for insertion of the inner annular wall, and the lower surface of the annular seal has a lower annular opening for insertion of the annular boss.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a leakage protector sets up the circuit board in the shell, has conducting ring and resistance card on the circuit board, and a contact pin of brush contacts with the different positions of resistance card, and another contact pin of brush contacts with the conducting ring, and different positions of resistance card produce different analog voltage to transmit the signal of this analog voltage to microprocessor through the conducting ring, microprocessor controls leakage protector's circular telegram time according to the different analog voltage that receive; the user can set the electrifying time in one step through the sliding electric brush, the operation is convenient and fast, and the cost is lower due to the adoption of a mechanical structure.

2. The utility model provides a leakage protector is through the inside brush of actuating piece drive shell to be provided with the mechanism of feeling between actuating piece and shell, can produce obvious gear through this mechanism of feeling and feel, be convenient for control brush and resistance card's contact position, thereby the time of more accurate control settlement.

3. The utility model provides a leakage protector, actuating piece adopt the knob, are provided with the annular seal spare between knob and shell, play sealed effect through the annular seal spare to guarantee leakage protection's protective capacities, prevent that the foreign matter of external dust or liquid and so on from getting into inside.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view provided in an embodiment of the leakage protector of the present invention.

Fig. 2 is a perspective view of the circuit board and the brush in the casing of the leakage protector of the present invention.

Fig. 3 is a top view of the circuit board of fig. 2.

Fig. 4 is a perspective view of the brush of fig. 2.

Fig. 5 is an assembly view of the brushes and circuit board within the housing.

Fig. 6 is an enlarged view of the area a in fig. 5.

Fig. 7 is a perspective view of the knob of fig. 1.

Fig. 8 is a perspective view of the fixing base disposed below the knob in the leakage protector of the present invention.

Fig. 9 is a bottom perspective view of the mounting base of fig. 8.

Fig. 10 is a plan view of a case of the leakage protector of the present invention.

Fig. 11 is a front sectional view of the annular sealing member provided between the housing and the knob of the leakage protector of the present invention.

Fig. 12 is an assembly view of the feel mechanism within the earth-leakage protector.

Fig. 13 is an enlarged view of the region B in fig. 12.

Description of the reference numerals:

1. a housing; 2. a knob; 3. a circuit board; 4. an electric brush; 5. positioning holes; 6. a conducting ring; 7. resistance cards; 8. passing through the aperture; 9. a first contact pin; 10. a second contact pin; 11. connecting holes; 12. positioning the shaft; 13. a limiting boss; 14. clamping the column; 15. hooking; 16. an inner annular wall; 17. a fixed seat; 18. a spring counterbore; 19. a card slot; 20. hanging the joint surface; 21. a positioning groove; 22. an annular seal; 23. an upper annular opening; 24. a lower annular opening; 25. an elastic member; 26. a slider.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

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

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, 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 as a specific case by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the present embodiment provides a specific implementation of a leakage protector, including: the electric brush cleaning device comprises a shell 1 and a knob 2, wherein the knob 2 is rotatably arranged on the shell 1, and the knob 2 can directly drive an electric brush 4 in the shell 1 to rotate; in addition, as an alternative embodiment, the knob 2 may also be another actuating member, such as a sliding member, and the brush 4 is arranged to slide under the driving of the sliding member. The knob 2 of the present embodiment may drive the brushes 4 in a stepped manner or a stepless manner. As shown in fig. 1, a mark including a numerical value and a letter ON is provided ON the knob 2; the shell is provided with an indicating arrow, and when the letter ON of the knob 2 is opposite to the indicating arrow, the earth leakage protector can be kept ON for a long time. When the numerical value of the knob 2 is directed to the indication arrow, the energization time of the earth leakage protector can be made to be the time indicated by the numerical value. In addition, as an alternative embodiment, the knob 2 can be replaced by a button, and the brush 4 in the housing 1 can be driven to rotate by pressing the button, and the specific structure can refer to the button structure of an automatic ball pen.

As shown in fig. 2, a circuit board 3 and a brush 4 are provided in the housing 1, the circuit board 3 has a positioning hole 5, and the brush 4 is rotatably connected to the positioning hole 5. As shown in fig. 3, a conductive ring 6 and a resistive sheet 7 are concentrically arranged on the circuit board 3 around the positioning hole 5, a space is provided between the conductive ring 6 and the resistive sheet 7, different positions of the resistive sheet 7 can generate different analog voltages, and the conductive ring 6 is used for transmitting signals of the analog voltages to a microprocessor. As shown in fig. 4, the brush 4 has contact pins for contacting the conductive ring 6 and the resistive sheet 7, and specifically, the brush 4 has a planar structure with a through hole 8 and first and second contact pins 9 and 10 extending in two different directions, and top contact ends of the first and second contact pins 9 and 10 are respectively equidistant from the through hole 8.

As shown in fig. 3, the resistive sheet 7 has a cutout for not generating an analog voltage, in which the contact foot of the brush 4 is adapted to be received. When the contact pin of the electric brush 4 enters the notch of the resistance chip 7, no analog voltage signal of the conducting ring 6 is transmitted to the microprocessor, and at the moment, the leakage protector can keep a long-time on state.

As shown in fig. 5 and 6, when the brush 4 and the wiring board 3 are assembled in the case 1 of the earth leakage breaker, the brush 4 is positioned above the wiring board 3, the brush 4 is connected to the knob 2, and the brush 4 is rotated on the wiring board 3 by the driving of the knob 2. The first contact pin 9 of the electric brush 4 is in contact with the conducting ring 6, the second contact pin 10 of the electric brush 4 is in contact with the resistance sheet 7, when the second contact pin 10 is in contact with different positions of the resistance sheet 7, different analog voltages are generated by the resistance sheet 7, the analog voltages reach the conducting ring 6 through the electric brush 4, the conducting ring 6 transmits signals of the analog voltages to the microprocessor, and the microprocessor processes the signals and then controls the power-on time of the residual current circuit breaker.

As shown in fig. 7, the lower end of the knob 2 has a positioning shaft 12 for inserting into the positioning hole 5 of the circuit board 3, a limiting boss 13 is provided on one side of the positioning shaft 12, and the brush 4 has a connecting hole 11 for being engaged with the limiting boss 13. When the electric brush 4 is assembled, the limiting boss 13 of the knob 2 is inserted into the connecting hole 11 of the electric brush 4, so that the electric brush 4 is clamped.

In the leakage protector provided by this embodiment, a hand feeling mechanism is arranged between the knob 2 and the housing 1; the hand feeling mechanism comprises: an elastic member 25, a sliding member 26, and a positioning groove 21. The slide 26 is driven by the elastic member 25, the slide 26 being adapted to be partially inserted into the positioning groove 21; the positioning groove 21 has a plurality, and the sliding member 26 is adapted to be inserted into the plurality of positioning grooves 21 in sequence when the knob 2 is driven. Through the effect of the hand feeling mechanism, when the knob 2 is rotated, obvious gear feeling can be generated, the contact position of the electric brush 4 and the resistance card 7 can be conveniently controlled, and therefore the set time can be controlled more accurately.

As shown in fig. 8, the tactile mechanism includes: and the fixed seat 17 is connected to the knob 2 through clamping. Specifically, as shown in fig. 7, the knob 2 has a latch post 14 extending downward, and a hook 15 is provided at a top end of the latch post 14. The fixing seat 17 has a slot 19, and as shown in fig. 9, the slot 19 has a hanging surface 20. Will fixing base 17 assembles when knob 2 goes up, insert the draw-in groove 19 of fixing base 17 with the card post 14 of knob 2 in, make couple 15 stretch into to hang and connect on face 20 to the realization is connected the lower extreme at knob 2 with fixing base 17 joint. In addition, as an alternative embodiment, the knob 2 can be replaced by other actuators, such as a slider.

As shown in fig. 8, a spring counterbore 18 is arranged on the side wall of the fixed seat 17, the elastic member 25 is arranged in the spring counterbore 18, and a sliding member 26 is arranged at the top end of the elastic member 25; the resilient member 25 may be a spring and the slider 26 may be a ball, a portion of which is received in the spring counterbore 18 and adapted to be inserted into the positioning groove 21. As shown in fig. 10, the positioning grooves 21 are provided on the housing 1, a plurality of positioning grooves 21 are uniformly provided along the circumferential direction, and the sliding member 26 is adapted to be inserted into the plurality of positioning grooves 21 in sequence under the driving of the knob 2. When the fixing seat 17 is matched with the shell 1, the fixing seat 17 rotates in the shell 1, and a ball which protrudes outwards from the fixing seat 17 is provided with a positioning groove 21 which partially extends into the shell 1; when the fixed seat 17 is rotated, the ball is driven to retract towards the spring counter bore 18 and then extend into the next positioning groove 21, so that a gear feeling is formed.

An annular sealing element 22 is arranged between the knob 2 and the shell 1 and used for sealing the hole position of the shell 1 for installing the knob 2. As shown in fig. 11, the upper surface of the annular sealing member 22 has an upper annular opening 23, and the lower surface of the annular sealing member 22 has a lower annular opening 24. The upper ring opening 23 is used for inserting the inner ring wall 16 at the lower end of the knob 2, so as to form a seal with the knob 2. The lower annular opening 24 is used for inserting an annular boss on the shell 1 so as to form a seal with the shell 1.

As shown in fig. 12 and 13, the annular sealing member 22 is disposed between the knob 2 and the housing 1, and when the knob 2 is screwed, sealing at the hole of the housing 1 for installing the knob 2 is achieved through sliding fit between the knob 2, the annular sealing member 22 and the housing 1.

As shown in fig. 13, the fixing seat 17 is rotatably disposed in the housing 1, in the fixing seat 17, the elastic member 25 drives the sliding member 26 to perform sliding movement along the inner wall of the housing 1, and a plurality of positioning grooves 21 are uniformly formed on the inner wall of the housing 1. Under the drive of the knob 2, the sliding pieces 26 sequentially enter the positioning grooves 21, so that a gear feeling is formed.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. A earth-leakage protector, comprising: the electric brush protection device comprises a shell (1), wherein a circuit board (3) and an electric brush (4) are arranged in the shell (1), the electric brush (4) is connected on the circuit board (3) in a sliding manner, an actuating piece is arranged on the shell (1), and the electric brush (4) is connected with the actuating piece; the circuit board (3) is provided with a conductive ring (6) and a resistor disc (7), and the conductive ring (6) and the resistor disc (7) are arranged at intervals;

the electric brush (4) is connected between the conductive ring (6) and the resistor sheet (7) in a sliding manner, and contact pins for contacting with the conductive ring (6) and the resistor sheet (7) are respectively arranged on the electric brush (4);

different positions of the resistance card (7) can generate different analog voltages, and the conductive ring (6) is used for transmitting signals of the analog voltages to a microprocessor.

2. A leakage protector according to claim 1, characterized in that the resistor disc (7) has a notch for not generating an analog voltage, where it is adapted to receive the contact pin of the brush (4).

3. A earth-leakage protector according to claim 1, characterized in that the brush (4) has a first contact foot (9) and a second contact foot (10), the first contact foot (9) being adapted to slide over the conductive ring (6), the second contact foot (10) being adapted to slide over the resistive sheet (7).

4. A leakage protector as claimed in any one of claims 1-3, characterized in that a hand-feeling mechanism is arranged between the actuating element and the casing (1), and the hand-feeling mechanism comprises: an elastic piece (25), a sliding piece (26) driven by the elastic piece (25) and a positioning groove (21) matched with the sliding piece (26), wherein the sliding piece (26) is suitable for being inserted into the positioning groove (21) under the driving of the elastic piece (25); the positioning groove (21) is provided with a plurality of positioning grooves, and the sliding piece (26) is suitable for being sequentially inserted into the plurality of positioning grooves (21) under the driving of the actuating piece.

5. A leakage protector according to claim 4, characterized in that the tactile mechanism comprises: the fixing seat (17) is connected to the actuating piece, a spring counter bore (18) is formed in the side wall of the fixing seat (17), and the elastic piece (25) is arranged in the spring counter bore (18).

6. A leakage protector according to claim 5, characterized in that the holder (17) is connected to the actuator by means of a snap-fit connection, and that the holder (17) has a snap-fit groove (19), and that the snap-fit groove (19) has a hanging surface (20); the actuating piece is provided with a clamping column (14) which extends towards the clamping groove (19), and the top end of the clamping column (14) is provided with a hook (15).

7. A leakage protector according to claim 1, characterized in that the actuator is a knob (2), and the conductive ring (6) and the resistive sheet (7) on the circuit board are concentrically arranged in a ring structure.

8. The earth leakage protector according to claim 7, wherein the circuit board (3) has a positioning hole (5), the lower end of the knob (2) has a positioning shaft (12) for inserting into the positioning hole (5), at least one limiting boss (13) is provided on one side of the positioning shaft (12), and the brush (4) has a connecting hole (11) for cooperating with the limiting boss (13).

9. A earth-leakage protector according to claim 7 or 8, characterized in that an annular seal (22) is provided between the knob (2) and the housing (1).

10. A protector as claimed in claim 9, characterized in that the lower end of the knob (2) has an inner annular wall (16), the casing (1) has an annular projection opposite to the inner annular wall (16), the upper surface of the annular seal (22) has an upper orifice (23) for inserting the inner annular wall (16), and the lower surface of the annular seal (22) has a lower orifice (24) for inserting the annular projection.

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