CN214254852U

CN214254852U - Leakage protection plug

Info

Publication number: CN214254852U
Application number: CN202120690283.2U
Authority: CN
Inventors: 章华联
Original assignee: Yueqing Dongya Electric Switch Factory
Current assignee: Yueqing Dongya Electric Switch Factory
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-09-21
Anticipated expiration: 2031-04-06

Abstract

The utility model discloses an earth leakage protection plug, including insulating casing and the earth leakage protection core assembly that includes the circuit board in it, last power input and the load output who is connected with earth leakage protection core assembly that is equipped with of insulating casing, insulating casing includes mutual lock sealing connection's upper cover and lower cover, all is connected through the buckle between the front end of upper cover and lower cover and the three position of both sides, carry out fixed connection through the antitheft screw between the rear end of upper cover and lower cover. The upper cover of the leakage protection plug is connected with the front end of the lower cover and the three parts of the two sides through the buckles, and only one antitheft screw is matched and fixedly connected with the lower cover, so that the connection between the upper cover and the edge of the lower cover is more tight, the leakage protection plug is suitable for places with water or high humidity, the problem that a terminal electrical appliance cannot be used due to frequent power failure is not easy to happen, the using amount of screws is greatly reduced, and the improvement space inside the leakage protection plug is enlarged.

Description

Leakage protection plug

Technical Field

The utility model relates to an electricity technical field especially relates to an earth leakage protection plug.

Background

Most of small household appliances such as electric hair dryers at home and abroad use leakage protection plugs, and when a circuit has a leakage fault, the leakage protection function is realized. In the existing leakage protection plug, the adopted insulating shell often has the following problems: the screws used for fixing the upper cover and the lower cover are too many, the waterproof sealing performance is poor, the waterproof sealing structure is not suitable for places with water or high humidity, otherwise, frequent power failure occurs, and the terminal electric appliance cannot be used; in addition, the design in the aspect of structure is also complex, and the leakage protection plug also has some defects in the aspects of structure and material saving. Although some devices are available, the structure is complex, or the reliability is poor, so that the requirements of users cannot be met well.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide an earth leakage protection plug, compact structure, sealing waterproof performance between upper cover and the lower cover is strong.

The utility model provides a technical scheme that its technical problem adopted: the utility model provides a leakage protection plug, includes the earth leakage protection core assembly of circuit board in insulating housing and the inside, is equipped with the power input end and the load output end that are connected with earth leakage protection core assembly on the insulating housing, characterized by: the insulation shell comprises an upper cover and a lower cover which are mutually buckled and hermetically connected, the front ends of the upper cover and the lower cover and the three parts of the two sides of the upper cover and the lower cover are connected through buckles, a protection column is arranged on each of the left side and the right side of each buckle, the peripheral distance range between the two protection columns is 7-16.7mm, the inner side distance range is 5-14.7 mm, and the upper cover and the rear end of the lower cover are fixedly connected through an antitheft screw.

For further perfection, lower extreme edge a week of upper cover and the upper end edge a week of lower cover are equipped with female tang and public tang of mutual lock in order to realize the location respectively, the buckle is including setting up the bar pin thread on female tang inner wall and setting up the bar box thread on public tang outer wall, the guard post is located on the upper cover inner wall on both sides about the bar pin thread, the guard post is in between female tang and the guard post when upper cover and lower cover pass through the buckle and are connected.

Further perfection, the length dimension of the buckle is 10-15mm, and the width dimension of the buckle is 1.5-2.5 mm.

Further perfection, the length dimension of the front end buckle 5 is 14mm, the width dimension is 2mm, the length dimension of the buckles on the two sides is 11mm, and the width dimension is 2 mm.

Further perfection, the cross sectional shape of bar box comprises rectangle and the isosceles trapezoid that the lower part used the long limit of rectangle as the end on the upper portion, the rectangle is length and width size 2mm and 0.3mm respectively, isosceles trapezoid's the size of going to the bottom, upper base and height are 2mm, 1mm and 0.5mm respectively, the size of bar pin thread and the size of bar box are to the adaptation.

Further perfect, the vertical bar boss that is equipped with on the side inner wall of lower cover, the bar boss corresponds the setting a pair of after the lock between the guard post.

Further perfection, the upper end face of the male spigot is covered with a layer of waterproof glue.

Further perfect, the upper cover surface is equipped with switch area and data plate district, is equipped with reset key, pilot lamp and detection key in the switch area, and the periphery in switch area is equipped with bellied U-shaped protruding edge, and the opening on U-shaped protruding edge is towards the one end at load output end place.

Further perfection, the rear end of lower cover is equipped with the tail-hood, load output end and antitheft screw install between lower cover and tail-hood.

The utility model discloses profitable effect is:

1. the upper cover of the leakage protection plug is connected with the front end of the lower cover and the three parts of the two sides through the buckles, so that the connection between the upper cover and the edge of the lower cover is more tight, and when the shell of the leakage protection plug expands with heat and contracts with cold, the upper cover and the edge of the lower cover are not easy to deform to generate gaps, so that the leakage protection plug is suitable for places with water or large humidity, and the problem that the terminal electrical appliance cannot be used due to frequent power failure is not easy to occur.

2. Be equipped with a pair of guard post on every buckle, can protect the buckle, even if insulating housing falls from the eminence, also can not fall open upper cover and lower cover for the buckle is connected more reliably and safely.

3. Carry out fixed connection through the theftproof screw between the rear end of upper cover and lower cover, only with three buckle of theftproof screw cooperation just can realize that upper cover and lower cover carry out sealing connection, reduced the quantity of screw greatly for screw post position quantity between upper cover and the lower cover reduces, has enlarged the inside improvement space of earth leakage protection plug, and earth leakage protection plug structural design is simple compact, and the reliability is showing and is improving, fine satisfying user's user demand.

4. The utility model discloses a leakage protection plug adopts the design of compatible two-pin European style plug in the leakage protection field, extensively is used for the electric heating table, the water storage formula water heater, electricity section of thick bamboo of blowing, electricity presss from both sides, electric scissors, dust catcher, electric bathtub, electric water heater, electric rice cooker, TV set, refrigerator, microwave oven, washing machine, dish washer, sterilizer, water dispenser, computer, electric tool and medical equipment, the leakage protection of terminal electrical apparatus such as instrument and meter.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the lower cover;

FIG. 3 is a schematic structural view of the upper cover;

FIG. 4 is a schematic cross-sectional view of the bar-shaped female buckle;

description of reference numerals: 1. power input end, 2, load output end, 3, upper cover, 31, female spigot, 32, switch area, 33, data plate area, 34, U-shaped protruding edge, 4, lower cover, 41, male spigot, 42, waterproof glue, 5, buckle, 51, bar male buckle, 52, bar female buckle, 53, guard post, 54, bar boss, 6, tail cover, 7, the fixed position of antitheft screw.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to figures 1-3: an electric leakage protection plug in this embodiment includes the earth leakage protection core assembly of circuit board in insulating housing and the inside, is equipped with power input 1 and the load output 2 that are connected with earth leakage protection core assembly on insulating housing, characterized by: the insulating shell comprises an upper cover 3 and a lower cover 4 which are mutually buckled and hermetically connected, the front ends and the three parts at the two sides of the upper cover 3 and the lower cover 4 are connected through buckles 5, the connection between the edges of the upper cover 3 and the lower cover 4 can be more compact, when the shell of the leakage protection plug expands with heat and contracts with cold, the upper cover 3 and the lower cover 4 are not easy to deform to generate gaps, the device is suitable for places with water or high humidity, the problem that the terminal electrical appliance cannot be used due to frequent power failure is not easy to occur, the left side and the right side of each buckle 5 are respectively provided with a protective column 53, the peripheral distance range between the two protective columns 53 is 7-16.7mm, the inner side distance range is 5-14.7 mm, the size of the buckle 5 in the range can achieve a good connecting effect, so that the connection is not firm, and the buckle cannot be opened by a tool easily; set up the protection post 53 and can protect buckle 5, even if insulation housing falls from the eminence, also can not break upper cover 3 and lower cover 4, buckle 5 connects more reliably and safely. Carry out fixed connection through the theftproof screw between the rear end of upper cover 3 and lower cover 4, only with three buckle of theftproof screw cooperation can realize that upper cover 3 and lower cover 4 carry out sealing connection, fixed connection's fastness between upper cover 3 and the lower cover 4 has been improved widely, the quantity of screw has not only been reduced greatly, make the screw post position quantity between upper cover and the lower cover reduce, the inside improvement space of earth leakage protection plug has still been enlarged, earth leakage protection plug structural design can be more simple compact, the reliability is showing and is improving, well satisfy user's user demand.

As shown in fig. 2-3, it is further preferable that a circumference of the lower end edge of the upper cover 3 and a circumference of the upper end edge of the lower cover 4 are respectively provided with a female seam allowance 31 and a male seam allowance 41 which are fastened to each other to achieve positioning, the fastener 5 includes a bar-shaped male fastener 51 disposed on the inner wall of the female seam allowance 31 and a bar-shaped female fastener 52 disposed on the outer wall of the male seam allowance 41, the protection posts 53 are disposed on the inner walls of the upper cover 3 on the left and right sides of the bar-shaped male fastener 51, and the protection posts 53 are disposed between the female seam allowance 31 and the protection posts 53 when the upper cover 3 and the lower cover 4 are connected by the fastener 5, so that the connection between the bar-shaped male fastener 51 and the bar-shaped female fastener 52 is firmer and is not easy to fall apart, and when the upper cover 3 and the lower cover 4 are expanded with heat and contracted with cold, the male seam allowance 41 and the female seam allowance 31 can be effectively maintained, and gaps are prevented from being generated.

Further preferably, the length dimension of the buckle 5 is 10-15mm, and the width dimension is 1.5-2.5 mm. Within this range, the clip 5 has good mounting and connecting properties.

More preferably, the length of the front end of the buckle 5 is 14mm, the width thereof is 2mm, and the length of the buckles 5 on both sides thereof is 11mm, and the width thereof is 2 mm. The structure and the material of the leakage protection plug are saved, and the connection reliability is good.

Preferably, the cross-sectional shape of the bar-shaped female buckle 52 is composed of a rectangle on the upper part and an isosceles trapezoid on the lower part, the rectangle is 2mm and 0.3mm in length and width, the isosceles trapezoid is 2mm, 1mm and 0.5mm in bottom, top and height, and the bar-shaped male buckle 51 is adapted to the bar-shaped female buckle 52 in size.

Further preferably, a bar-shaped boss 54 is vertically arranged on the inner side wall of the lower cover 4, the bar-shaped boss 54 is correspondingly arranged between the pair of buckled protection columns 53, and the bar-shaped boss 54 has the functions of positioning and improving the structural strength of the protection columns 53.

Further preferably, the upper end surface of the male seam allowance 41 is covered with a layer of waterproof glue 42, so that the waterproof performance of the upper cover 3 and the lower cover 4 can be further enhanced.

Further preferably, the surface of the upper cover 3 is provided with a switch area 32 and a nameplate area 33, the switch area 32 is internally provided with a reset key, an indicator light and a detection key, the periphery of the switch area 32 is provided with a raised U-shaped convex edge 34, and an opening of the U-shaped convex edge 34 faces to one end where the load output end 2 is located.

Further preferably, the rear end of lower cover 4 is equipped with tail-hood 6, load output 2 and antitheft screw are installed between lower cover 4 and tail-hood 6, can strengthen load output 2's waterproof insulating properties to can hide the antitheft screw and protect, can prevent effectively that the antitheft screw from getting damp and rusty or being twisted by the mistake, improve the life of antitheft screw, guarantee the firm performance of being connected between upper cover 3 and the lower cover 4.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a leakage protection plug, includes the earth leakage protection core assembly of circuit board in insulating housing and the inside, is equipped with power input end (1) and load output end (2) that are connected with earth leakage protection core assembly on the insulating housing, characterized by: insulating housing includes upper cover (3) and lower cover (4) of mutual lock sealing connection, all connects through buckle (5) between the front end of upper cover (3) and lower cover (4) and the three position of both sides, every both sides respectively are equipped with a protection post (53), two peripheral distance scope between protection post (53) is 7-16.7mm, and inboard distance scope is 5mm-14.7mm, carry out fixed connection through the antitheft screw between the rear end of upper cover (3) and lower cover (4).

2. A leakage protection plug according to claim 1, wherein: lower extreme edge a week of upper cover (3) and the upper end edge a week of lower cover (4) are equipped with female tang (31) and public tang (41) of mutual lock in order to realize the location respectively, buckle (5) are including setting up bar male buckle (51) on female tang (31) inner wall and setting up bar female buckle (52) on public tang (41) outer wall, guard column (53) are located on upper cover (3) inner wall on both sides about bar male buckle (51), guard column (53) are in between female tang (31) and guard column (53) when upper cover (3) are connected through buckle (5) with lower cover (4).

3. A leakage protection plug according to claim 2, wherein: the length dimension of the buckle (5) is 10-15mm, and the width dimension is 1.5-2.5 mm.

4. A leakage protection plug according to claim 3, wherein: the front end the length dimension of buckle (5) is 14mm, and width dimension is 2mm, both sides the length dimension of buckle (5) is 11mm, and width dimension is 2 mm.

5. A leakage protection plug according to claim 4, wherein: the cross section of the bar-shaped female buckle (52) is composed of a rectangle on the upper portion and an isosceles trapezoid with the long side of the rectangle as the bottom at the lower portion, the rectangle is 2mm and 0.3mm in length and width, the lower bottom, the upper bottom and the height of the isosceles trapezoid are 2mm, 1mm and 0.5mm, and the size of the bar-shaped male buckle (51) is adapted to the size of the bar-shaped female buckle (52).

6. A leakage protection plug according to claim 5, wherein: the side inner wall of the lower cover (4) is vertically provided with a strip-shaped boss (54), and the strip-shaped boss (54) is correspondingly arranged between the pair of the protection columns (53) after being buckled.

7. A leakage protection plug according to claim 6, wherein: the upper end face of the male spigot (41) is covered with a layer of waterproof glue (42).

8. A leakage protection plug according to any of claims 1-7, wherein: the surface of the upper cover (3) is provided with a switch area (32) and a nameplate area (33), a reset key, an indicator light and a detection key are arranged in the switch area (32), a raised U-shaped convex edge (34) is arranged on the periphery of the switch area (32), and an opening of the U-shaped convex edge (34) faces to one end where the load output end (2) is located.

9. A leakage protection plug according to claim 8, wherein: the rear end of the lower cover (4) is provided with a tail cover (6), and the load output end (2) and the anti-theft screw are arranged between the lower cover (4) and the tail cover (6).