CN214254876U

CN214254876U - Waterproof rear-connected leakage protection plug

Info

Publication number: CN214254876U
Application number: CN202120698394.8U
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 a connect formula earth leakage protection plug after waterproof, including the upper cover, have the second lower cover of participating in first lower cover, first lower cover tail end, arrange the earth leakage protection core in the holding intracavity that upper cover and first lower cover enclose in place the line hole and install the fastener on the line hole are walked in what first lower cover and second lower cover enclosed, first sealed flange, the sealed flange of second, first sealing washer, second sealing washer and third annular seal groove on the fastener, it is equipped with first annular seal groove and second annular seal groove on the line hole inner wall to walk, it seals the cooperation with first sealing washer and second sealing washer respectively mutually, walk to be equipped with on the line hole and seal complex annular boss with third annular seal groove. The utility model discloses a be equipped with multiple waterproof sealing structure between walking line hole and the fastener, have outstanding waterproof function, can prevent effectively that output inner structure from weing, reduce the risk that the electric leakage accident takes place.

Description

Waterproof rear-connected leakage protection plug

Technical Field

The utility model relates to an earth leakage protection plug especially relates to a waterproof back grafting formula earth leakage protection plug.

Background

The rear-connection type leakage protection plug has wide application value in the field of leakage protection of electric appliances, can prevent leakage accidents from happening, and is flexible to use. However, in the prior art, the rear-connection leakage protection plug has a large design volume, short mechanical life, poor waterproof structure function, incapability of separating water from electricity and only realizing the most basic square spraying function, and is easy to cause electric shock accidents in places with severe environment and high annual humidity. In addition, if the electric leakage protection device works in a humid environment, the internal structure is easy to rust, so that the service life of the electric leakage protection device is shortened, the electric leakage protection effect is weakened, the personal safety cannot be effectively protected, and the risk of electric leakage accidents is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide a waterproof after-connecting formula earth leakage protection plug, its design is small, long mechanical life, the installation is simple, has outstanding waterproof function, can effectively prevent that output inner structure from weing, reduces the risk that the electric leakage accident takes place, protection personal safety.

The utility model provides a technical scheme that its technical problem adopted: a waterproof rear-connection type leakage protection plug comprises an upper cover, a first lower cover with plug pins, a second lower cover at the tail end of the first lower cover, a leakage protection machine core arranged in a containing cavity formed by the upper cover and the first lower cover, a wiring hole formed by the first lower cover and the second lower cover in a surrounding mode, and a wire clamp installed on the wiring hole, wherein a first sealing flange is arranged at the upper end of the wire clamp, the lower side surface of the first sealing flange is attached to the inner wall of the joint of the first lower cover and the second lower cover, a second sealing flange is arranged at the lower end of the wire clamp, the upper side surface of the second sealing flange is attached to the outer wall of the joint of the first lower cover and the second lower cover, a first sealing ring and a second sealing ring are sequentially arranged in the middle of the wire clamp from top to bottom at intervals, a first annular sealing groove and a second annular sealing groove are arranged on the inner wall of the wiring hole, and are respectively in sealing fit with the first sealing ring and the second sealing ring, and a third annular sealing groove is formed in the outer wall of the wire clamp between the first sealing flange and the first sealing ring, and an annular boss in sealing fit with the third annular sealing groove is arranged in the inner hole of the wiring hole.

For further improvement, the fastener is the rubber material, first sealing flange, second sealing flange, third annular seal groove, first sealing washer and second sealing washer on the fastener are integrated into one piece.

Further perfection, be equipped with the recess on the contact surface between first lower cover and the second lower cover, be equipped with the sealing strip on the recess.

Further perfecting, the recess is linked together with first annular seal groove, the both ends of sealing strip and the left and right sides both ends integrated into one piece of first sealing washer perhaps the sealing strip is with the terminal surface integrated into one piece of first lower cover.

Further perfection, first sealing washer and second sealing washer are trapezoidal sealing washer or rectangle sealing washer.

Further perfecting, the third annular seal groove upper side wall is flush with the lower side face of the first seal flange.

Further perfecting, the shape of the first sealing flange is a rectangular flange, and the second sealing flange is a conical flange.

Further perfect, the hole both ends of fastener are equipped with first annular depressed part and second annular depressed part respectively, the hole middle part of fastener is equipped with fourth annular seal groove.

Further perfection, be equipped with the waterproof membrane of three rings on the surface of fastener, three rings the waterproof membrane sets up respectively between third annular seal groove, first sealing washer and second sealing washer and between second sealing washer and the second seal flange.

The utility model discloses profitable effect is: the utility model relates to a small, mechanical life is long, and the installation is simple, walks to be equipped with multiple waterproof sealing structure between line hole and the fastener, has outstanding waterproof function, can prevent effectively that output inner structure from weing, reduces the risk that the electric leakage accident takes place, protection personal safety. 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 an exploded view of the present invention;

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

FIG. 3 is a schematic structural view of a second lower cover;

FIG. 4 is a schematic structural view of the cable clamp;

FIG. 5 is a schematic view of the clip in combination with a sealing strip;

description of reference numerals: 1. the upper cover, 2, first lower cover, 21, sealing strip, 3, second lower cover, 31, recess, 4, earth leakage protection core, 5, walking hole, 51, first annular seal groove, 52, second annular seal groove, 53, annular boss, 6, fastener, 61, first sealing flange, 62, second sealing flange, 63, first sealing washer, 64, second sealing washer, 65, third annular seal groove, 66, first annular depressed part, 67, second annular depressed part, 68, fourth annular seal groove, 69, water proof membrane.

Detailed Description

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

referring to figures 1-3: in this embodiment 1, a waterproof rear-connected leakage protection plug includes an upper cover 1, a first lower cover 2 having pins, a second lower cover 3 at the tail end of the first lower cover 2, a leakage protection mechanism 4 arranged in a containing cavity defined by the upper cover 1 and the first lower cover 2, a reset key, a test key and an indicator light arranged on the surface of the upper cover, a wire passing hole 5 defined by the first lower cover 2 and the second lower cover 3, and a wire clamp 6 installed on the wire passing hole 5, wherein a wire is connected with a wiring terminal on the first lower cover 2 after passing through an inner hole of the wire clamp 6, so as to realize electrical connection with the leakage protection mechanism 4, the first lower cover 2 has pins, and can be inserted into a jack on a socket to switch on a power supply, so that an electrical appliance at a load end of the wire can normally work, and when leakage occurs, the leakage protection mechanism 4 automatically switches off a circuit, so as to realize leakage protection. The upper end of the wire clamp 6 is provided with a first sealing flange 61, the lower side surface of the first sealing flange 61 is attached to the inner wall of the joint of the first lower cover 2 and the second lower cover 3 to realize inner side waterproof sealing, the lower end of the wire clamp 6 is provided with a second sealing flange 62, the upper side surface of the second sealing flange 62 is attached to the outer wall of the joint of the first lower cover 2 and the second lower cover 3 to realize outer side waterproof sealing, the middle part of the wire clamp 6 is sequentially provided with a first sealing ring 63 and a second sealing ring 64 at intervals from top to bottom, the inner wall of the wiring hole 5 is provided with a first annular sealing groove 51 and a second annular sealing groove 52, the first annular sealing groove 51 and the second annular sealing groove 52 are respectively in sealing fit with the first sealing ring 63 and the second sealing ring 64 to form double sealing of the middle part, the outer wall of the wire clamp 6 between the first sealing flange 61 and the first sealing ring 63 is provided with a third annular sealing groove 65, an annular boss 53 in sealing fit with the third annular sealing groove 65 is arranged on the inner hole of the wiring hole 5, so that the inner end sealing effect of the first sealing flange 61 can be further improved. And a groove 31 is formed in the contact surface between the first lower cover 2 and the second lower cover 3, and a sealing strip 21 is arranged on the groove 31, so that waterproof sealing between the end surfaces of the first lower cover 2 and the second lower cover 3 can be realized.

The fastener 6 is made of rubber, and a first sealing flange 61, a second sealing flange 62, a third annular sealing groove 65, a first sealing ring 63 and a second sealing ring 64 on the fastener 6 are all integrally formed, so that the joint is few, and the sealing performance is good. The first sealing ring 63 and the second sealing ring 64 are trapezoidal sealing rings or rectangular sealing rings, and have high sealing performance. The upper side wall of the third annular seal groove 65 is flush with the lower side surface of the first seal flange 61, so that the sealing depth of the lower side of the first seal flange 61 can be increased. The first sealing flange 61 is a rectangular flange, and the second sealing flange 62 is a conical flange, so that the shape of the inner wall and the outer wall can be well attached. The hole both ends of fastener 6 are equipped with first annular depressed part 66 and second annular depressed part 67 respectively, can increase seal ring, improve the leakproofness of electric wire and fastener hole, the hole middle part of fastener 6 is equipped with fourth annular seal groove 68, can mid-mounting sealing washer, further reinforcing waterproof performance.

As shown in fig. 2-3, example 2: the difference from embodiment 1 is only that the groove 31 is communicated with the first annular sealing groove 51, and the sealing strip 21 and the end surface of the first lower cover 2 are integrally formed, so that the installation step of the sealing strip 21 can be omitted, the installation is convenient, and the material cost is reduced.

As shown in fig. 5, example 3: the difference from embodiment 1 is that the groove 31 is communicated with the first annular seal groove 51, and the two ends of the seal strip 21 and the left and right ends of the first seal ring 63 are integrally formed, so that the sealing performance of the end surfaces of the first lower cover 2 and the second lower cover 3 can be greatly improved.

As shown in fig. 4, example 4: on the basis of any one of embodiments 1 to 3, three circles of waterproof films 69 are arranged on the surface of the wire clamp 6, the three circles of waterproof films 69 are respectively arranged between the third annular sealing groove 65, the first sealing ring 63 and the second sealing ring 64 and between the second sealing ring 64 and the second sealing flange 62, and the three circles of waterproof films 69 can be matched with the concave-convex structures on the wire routing hole and the wire clamp, so that the waterproof performance between the wire routing hole and the wire clamp is further improved.

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 connect formula earth leakage protection plug after waterproof, includes upper cover (1), has first lower cover (2) of participating in, second lower cover (3) of first lower cover (2) tail end, arranges in electric leakage protection core (4) of the holding intracavity that upper cover (1) and first lower cover (2) enclose in, walk line hole (5) and install fastener (6) on walking line hole (5) that first lower cover (2) and second lower cover (3) enclose, characterized by: the upper end of the wire clamp (6) is provided with a first sealing flange (61), the lower side surface of the first sealing flange (61) is attached to the inner wall of the joint of the first lower cover (2) and the second lower cover (3), the lower end of the wire clamp (6) is provided with a second sealing flange (62), the upper side surface of the second sealing flange (62) is attached to the outer wall of the joint of the first lower cover (2) and the second lower cover (3), the middle part of the wire clamp (6) is sequentially provided with a first sealing ring (63) and a second sealing ring (64) at intervals from top to bottom, the inner wall of the wire walking hole (5) is provided with a first annular sealing groove (51) and a second annular sealing groove (52), the first annular sealing groove (51) and the second annular sealing groove (52) are respectively in sealing fit with a first sealing ring (63) and a second sealing ring (64), and the outer wall of the wire clamp (6) between the first sealing flange (61) and the first sealing ring (63) is provided with a third annular sealing groove (65), an annular boss (53) in sealing fit with the third annular sealing groove (65) is arranged on the inner hole of the wiring hole (5).

2. The waterproof rear-connected leakage protection plug of claim 1, wherein: and a groove (31) is formed in the contact surface between the first lower cover (2) and the second lower cover (3), and a sealing strip (21) is arranged on the groove (31).

3. The waterproof rear-connected leakage protection plug of claim 2, wherein: the groove (31) is communicated with the first annular sealing groove (51), and the sealing strip (21) and the end face of the first lower cover (2) are integrally formed.

4. The waterproof rear-connected leakage protection plug of claim 2, wherein: the groove (31) is communicated with the first annular sealing groove (51), and the two ends of the sealing strip (21) and the left end and the right end of the first sealing ring (63) are integrally formed.

5. A waterproof rear-connected earth leakage protection plug according to any one of claims 1-4, characterized in that: fastener (6) are the rubber material, first sealing flange (61), second sealing flange (62), third annular seal groove (65), first sealing washer (63) and second sealing washer (64) on fastener (6) are integrated into one piece.

6. The waterproof rear-connected leakage protection plug of claim 5, wherein: the first sealing ring (63) and the second sealing ring (64) are trapezoidal sealing rings or rectangular sealing rings.

7. The waterproof rear-connected leakage protection plug of claim 6, wherein: the upper side wall of the third annular sealing groove (65) is flush with the lower side surface of the first sealing flange (61).

8. The waterproof rear-connected leakage protection plug of claim 7, wherein: the first sealing flange (61) is a rectangular flange and the second sealing flange (62) is a tapered flange.

9. The waterproof rear-connected leakage protection plug of claim 8, wherein: the wire clamp is characterized in that a first annular concave part (66) and a second annular concave part (67) are respectively arranged at two ends of an inner hole of the wire clamp (6), and a fourth annular sealing groove (68) is arranged in the middle of the inner hole of the wire clamp (6).

10. A waterproof rear-connected earth leakage protection plug according to claim 9, wherein: the surface of the wire clamp (6) is provided with three circles of waterproof films (69), and the three circles of waterproof films (69) are respectively arranged among the third annular sealing groove (65), the first sealing ring (63) and the second sealing ring (64) and between the second sealing ring (64) and the second sealing flange (62).