CN110137736B

CN110137736B - Electric shock prevention safety plug

Info

Publication number: CN110137736B
Application number: CN201910417735.7A
Authority: CN
Inventors: 李红君; 许方伟; 高海容; 金小法
Original assignee: Datang Jixi No2 Co Generation Co ltd
Current assignee: DATANG JIXI NO.2 CO-GENERATION CO.,LTD.
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2022-01-07
Anticipated expiration: 2039-05-20
Also published as: CN110137736A

Abstract

The invention relates to the technical field of electrical equipment and discloses an electric shock prevention safety plug which comprises a protective shell and two pins extending out of the bottom end of the protective shell, wherein the bottom end of the protective shell is provided with a protective cover wrapping the pins, the protective cover is in a telescopic tubular shape, and the free telescopic length of the protective cover is nine tenths of that of the pins. According to the invention, the telescopic protective cover is additionally arranged outside the pin, so that the pin is always positioned in the protective cover and insulated from the outside in the plugging and unplugging process of the plug, and the electric shock caused by the direct contact of the hand of a user with the pin is effectively avoided.

Description

Electric shock prevention safety plug

Technical Field

The invention relates to the technical field of electrical equipment, in particular to an electric shock prevention safety plug.

Background

The existing household appliance plug is mostly characterized in that two-phase or three-phase conductive pins are exposed from the end part of a plastic insulating shell, because the pins are directly exposed, in the process of plugging and unplugging the plug manually, fingers are easy to touch the conductive pins to cause electric shock, potential safety power utilization hazards are generated, on the other hand, the dependence of the plug on fastening more than one socket is clamped with a conductive clamping piece in the socket, after the plug is plugged and unplugged for many times, the plug is easy to loosen, poor in contact and not beneficial to use of an electric appliance, and therefore, the electric shock prevention safety plug is provided, and the problem is solved.

Disclosure of Invention

Aiming at the defects of the existing electric appliance wiring plug in the background technology in the using process, the invention provides the electric shock prevention safety plug which has the advantages of safety, electric shock prevention and loosening prevention and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides an electric shock protection safety plug, includes the protecting crust, stretches out two of protecting crust bottom are participated in, the bottom of protecting crust is equipped with the protection casing of wrapping up in participating in the outside, the protection casing is the telescopic tubulose, the freely flexible length of protection casing is for participating in nine tenth.

Preferably, the fixed cover in outside of participating in has connect the gauze mask, the inside of protecting crust is equipped with the connecting pipe that runs through upper and lower extreme, the connecting pipe is used for the inner chamber and the outside of intercommunication protection casing, the top of connecting pipe is equipped with the closure stopper.

Preferably, the mouth sealing cover is a bevel cover with a downward cover mouth.

Preferably, the protection casing is the insulating cover of bellows form electricity, the bottom of protection casing is the umbelliform, and its umbelliform internal surface is smooth to be polished and is handled, the width of the outer wall middle part ripple crease of protection casing is 4 times of the wall thickness.

The invention has the following beneficial effects:

1. according to the invention, the telescopic protective cover is additionally arranged outside the pin, so that the pin is always positioned in the protective cover and insulated from the outside in the plugging and unplugging process of the plug, and the electric shock caused by the direct contact of the hand of a user with the pin is effectively avoided.

2. According to the invention, the protective cover and the sealing cover are used, so that when the plug is plugged in the wiring board, the pins outside the wiring board are wrapped in the closed space by the protective cover and the sealing cover, and when the plug is tightly attached to the wiring board, the protective cover is prevented from extending due to the internal and external pressure of the protective cover, so that the plug obtains extra adsorption force, and the auxiliary plug is not easy to fall off the wiring board.

Drawings

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

FIG. 2 is a schematic view of the protective cover and the sealing cover of the present invention both abutting against the surface of the wiring board;

fig. 3 is a schematic overall appearance of the present invention.

In the figure: 1. a protective shell; 2. a pin; 3. a protective cover; 4. sealing the mask; 5. a pressure guide pipe; 6. sealing the plug; 7. a connector lug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an anti-electric shock safety plug comprises a protective shell 1, two pins 2 extending out of the bottom end of the protective shell 1, the pins 2 being conductive rods or pieces, a connector lug 7 arranged on the top of the protective shell 1, the end of the pins 2 extending into the protective shell 1 being electrically connected to the connector lug 7 through wires, a protective cover 3 covering the pins 2 and arranged at the bottom end of the protective shell 1 and located at the pins 2, the protective cover 3 being a bellows-shaped electrically insulating cover made of elastic electrically insulating silicone rubber, the protective cover 3 being free to cover nine tenth of the pins 2, a sealing cover 4 fixedly sleeved outside the pins 2, the sealing cover 4 being a bevel cover located at the position where the pins 2 contact with a wiring board when the pins 2 are completely inserted into the wiring board, the cover facing downward to cover the jacks of the wiring board, so as to ensure the realization of a sealed space, and a sealing cover 4 and the protective cover 3, The wiring board encloses into airtight space together, and the inside of protecting crust 1 is equipped with the connecting pipe 5 that runs through upper and lower extreme, and connecting pipe 5 is equipped with sealing plug 6 with the inner chamber and the outside intercommunication of protection casing 3, connecting pipe 5's top.

When using, the outside of the handheld protective housing 1 of user, will participate in 2 jacks of aiming at the wiring board, the plug of impressing, at this moment, even finger touch protection casing 3 can not cause the electric shock yet, participate in the in-process of 2 plug jacks, the bottom contact wiring board surface of protection casing 3 and receive the compression, the ripple form of protection casing 3 carries out the compression folding, until sealing cover 4 and wiring board surface contact, the inside of protection casing 3 encloses into an airtight space with the outside of sealing cover 4 promptly, wherein, at the plug in-process of inserting, need to seal and fill in 6 and open all the time, after pegging graft at last and target in place, support and press the plug and hug closely the wiring board, then will seal the plug 6 and fill in the sealed of 5 ports of connecting pipe and accomplish airtight space. In the confined space of constituteing by protection casing 3 and closing cap 4, its atmospheric pressure is the same with outside atmospheric pressure, and at this moment, if protection casing 3 extension, its inside atmospheric pressure descends, under the effect of pressure difference, can prevent the trend of protection casing 3 extension, if protection casing 1 drives to participate in 2 and breaks away from the jack, need first pull protection casing 3, change inside atmospheric pressure promptly to the resistance that pressure difference provided prevents protection casing 1 promptly and drops.

From this, this application is established protection casing 3 through adding in the outside of participating in 2 and is touched participating in 2 and cause the danger of electrocuteeing in order to prevent that user's hand plug protecting crust 1 time, simultaneously, through the airtight space that protection casing 3 and sealing cover 4 enclose, can provide the resistance that protecting crust 1 loosens because of the dead weight, fastening stability when improving the plug and pegging graft. In practical use, the heating pressure in the originally sealed space may become larger due to the temperature rise of the electric appliance, and at this time, the sealing plug 6 is pulled out only after the peripheral temperature of the standby electric appliance is stable, and the sealing plug 6 is plugged after the protective shell 1 and the wiring board are tightly abutted again.

Wherein, the bottom of protection casing 3 is umbelliform, its umbelliform internal surface is smooth, 3 umbelliform and smooth internal surface of protection casing, on the one hand, play the shirt rim effect of sucking disc, be used for sticising sealedly, on the other hand, obtain bigger pressure difference stress surface, the width of the outer wall middle part ripple crease of protection casing 3 is 4 times of wall thickness, guarantee corrugated radial bearing capacity with the length of crease, this is set for and is ensured protection casing 3 under the effect of self gravity of protection casing 1, protection casing 3 preferentially stretches crooked, rather than the radial shrink of pressurized, simultaneously, prevent protection casing 3 tensile on the ripple crease face because of the pressure difference effect.

Wherein, the sealing cover 4 is made of soft electric insulation rubber material, and can be made of the same material as the protection cover 3.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electric shock prevention safety plug comprises a protective shell (1) and two plug pins (2) extending out of the bottom end of the protective shell (1),

the method is characterized in that: the bottom end of the protective shell (1) is provided with a protective cover (3) wrapped outside the plug pin (2), the protective cover (3) is in a telescopic tubular shape, and the free telescopic length of the protective cover (3) is nine tenths of that of the plug pin (2);

the sealing mask (4) is fixedly sleeved outside the plug pins (2), a pressure pipe (5) penetrating through the upper end and the lower end is arranged inside the protective shell (1), the pressure pipe (5) is used for communicating the inner cavity and the outside of the protective cover (3), and a sealing plug (6) is arranged at the top end of the pressure pipe (5);

in the process of inserting the plug, the sealing plug (6) needs to be opened all the time, and after the plug is inserted in place, the sealing plug (6) is plugged into the port of the pressure guide pipe (5) to complete the sealing of the closed space;

when the electric shock-proof device is used, a closed space is enclosed by the inside of the protective cover (3) and the outside of the sealing cover (4), when the temperature of an electric appliance rises to cause the heating pressure in the closed space to be increased, the sealing plug (6) is pulled out and inserted again after the peripheral temperature of the electric appliance for standby is stable, the pin (2) is always positioned in the protective cover (3) and is insulated with the outside, and therefore the hand of a user is effectively prevented from directly contacting the pin (2) to cause electric shock.

2. The anti-shock safety plug of claim 1, wherein: the mouth sealing cover (4) is a bevel cover, and the mouth of the cover faces downwards.

3. An electric shock protection safety plug as claimed in any one of claims 1 or 2, wherein: the protection casing (3) are the electrically insulating cover of bellows form, the bottom of protection casing (3) is umbelliform, and its umbelliform internal surface is smooth to be polished and is handled, the width of the outer wall middle part ripple crease of protection casing (3) is 4 times of wall thickness.