CN2671168Y

CN2671168Y - Safety jack

Info

Publication number: CN2671168Y
Application number: CN 03270231
Authority: CN
Inventors: 沈斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-17
Filing date: 2003-09-17
Publication date: 2005-01-12
Anticipated expiration: 2013-09-17

Abstract

The utility model provides a safety jack belonging to the technical field of the low-voltage electric appliance, and solves the problem of the exiting complicated safety jacks which are easy to spark, etc. The safety jack comprises a jack body whose upper part is provided with two conductive chips, and two lower contact chips are arranged at the lower part of the body. The utility model is characterized in that two upper contact chips are arranged at the lower part of the body; the two upper contact chips are respectively communicated with the two conductive chips; a seesaw pressing device which can have the upper contact chips contacted with the lower contact chips is arranged in the body. The pressing device comprises a piezoelectric sheet in the body; the piezoelectric sheet can slide in the body up and down; a safe seesaw is arranged on the piezoelectric sheet; the middle of the safe seesaw is hinged with the piezoelectric sheet. The conductive chips are non-electricity before a plug inserts the jack; thus short circuit does not appear; other object inserts the socket of the jack from one bore, the conductive chips are also non-electricity. The utility model has good safety and high practicability.

Description

Safety socket

Technical field

The utility model belongs to the low voltage electrical apparatus technology field, particularly a kind of socket with safety device.

Background technology

In daily employed socket, generally formed with two conducting strips that body interior is used for being connected with external power source by two jacks on jack body, the body.When plug insertion socket, the inserted sheet of plug contacts with conducting strip and conducts electricity.Obviously, on common socket,, just may conduct electricity and cause electric shock accidents if insert with the metal rod-like articles of key and so in the jack of socket.Therefore, for the child of and ignorant active for some, common socket exists certain danger.

For this reason, some socket is equipped with a plastic dam at its jack place, makes foreign matter be difficult for inserting.Like this, need to play certain safety effect.But,, still can insert the thing of metal bar and so on if one exert oneself slightly.Therefore, the fail safe of this mode is not high.

Chinese patent 96113108X provides a kind of " safety socket ", and it is to comprise jack body, two first conducting strips, two second conducting strips and safety devices.This safety socket is to utilize the balancing unit at its middle part and move down with pressure hammer that balancing unit articulates, makes second conducting strip move down and contact two first conducting strips and forms and electrically contact.In this safety socket,, can not conduct electricity, so security performance is greatly improved if foreign matter is arranged by inserting in the jack.But this safety socket exists certain weak point, mainly is that its structure is complicated, and the cost of product has been improved greatly.Simultaneously, owing to be that the second conducting strip integral body moves down, be easy to generate spark when plug inserts, cause the fail safe used relatively poor.

Summary of the invention

The purpose of this utility model is in order to overcome the problems referred to above, a kind of safety socket of new structure to be provided, make it have simple and reasonable, security performance good, can not produce characteristics such as spark when using.

The purpose of this utility model realizes by following technical proposal: the safety socket comprises jack body, upper part of body has two conducting strips, be provided with two following contacts in the bottom of body, it is characterized in that also being provided with contact on two in the body bottom, go up contact for two and be conducted with above-mentioned two conducting strips respectively, the hold down gag that contact is contacted with following contact of a moving seesaw-type is set in body.

In the safety socket, the live wire of power supply is connected with following contact respectively with ground wire.When plug did not insert, last contact separated with following contact, and is all not charged on last contact and the conducting strip.Have only in plug inserts safety socket, and when hold down gag is pressed down, utilize hold down gag that contact is contacted with following contact, last contact and conducting strip will be switched on, and electric current will be delivered on the consuming device by plug.

In above-mentioned safety socket, described hold down gag comprises a piezoelectric board in the body, and piezoelectric board can slide up and down in body, and a safe seesaw is arranged on the top of piezoelectric board, and safe seesaw is located to be hinged with piezoelectric board in the middle.

A back-moving spring can also be set between piezoelectric board and body.

Usually, safety device adopts insulating material to make.When the jack of plug insertion socket, the inserted sheet on the plug contacts with safe seesaw.Because two inserted sheets contacts with the safety seesaw simultaneously, the active force of inserted sheet can make safe seesaw and piezoelectric board move down together, is pressed on the contact until piezoelectric board, contact is out of shape and contacts with following contact.When transfering to plug, the pressure that acts on safe seesaw and the piezoelectric board is eliminated, the metallic elastic of contact in the utilization, and last contact separates with following contact, and safe seesaw and piezoelectric board reset.Back-moving spring will help resetting of piezoelectric board and safe seesaw.

Obviously, when plug did not insert in the socket, last contact separated with following contact, does not promptly have charged on the conducting strip.Under improper situation, for example there is a pole to insert one of them jack of safety socket, therefore can make safe seesaw upset certain angle, but whole safe seesaw together with piezoelectric board moved down because safe seesaw and piezoelectric board are hinged this moment.Like this, last contact is can not contact with charged following contact, also just can not be charged on the conducting strip, so can not cause danger.

Compared with prior art, advantage of the present utility model is:

1, because when plug does not insert socket, conducting strip is uncharged, even therefore under the environment of humidity, safety socket accident such as also can not be short-circuited can be used safely fully.

2, when last contact contacted with following contact, the contact-making surface between the contact was very big up and down, so can not produce spark, made safety socket constant product quality, long service life.

3, when foreign matter inserted receptacle sockets by single hole, conducting strip can be not charged, and its security performance is good, has higher utility.

Description of drawings

Fig. 1 is the cutaway view of the safety socket that provides of the utility model.

Fig. 2 is the schematic diagram of safety socket when plug inserts that the utility model provides.

Fig. 3 is the schematic diagram of safety socket when foreign matter is inserted by single hole that the utility model provides.

Among the figure, 1, body; 11, jack; 2, conducting strip; 3, go up contact; 4, following contact; 5, piezoelectric board; 6, safe seesaw; 7, back-moving spring; 8, plug; 81, inserted sheet; 9, foreign matter; 10, location-plate.

Embodiment

As shown in Figure 1, the safety socket comprises jack body 1, conducting strip 2, last contact 3, following contact 4 and hold down gag.In the present embodiment, body 1 adopts the plastics of insulation to make, and two jacks 11 are arranged on the body 1.Two conducting strips 2 are arranged at the top of body 1, and conducting strip 2 is in the inboard of jack 11.

Contact 3 and following contact 4 on two are arranged in the bottom of body 1.Last contact 3 is conducted with conducting strip 2 respectively.Following contact 4 is to be used to connect the live wire of power supply and ground wire.Leave certain clearance between last contact 3 and the following contact 4.Therefore, under the situation that is not subjected to the external force effect, be nonconducting between last contact 3 and the following contact 4.In the present embodiment, on touch 3, contact 4 and conducting strip 2 all are that to adopt copper be that material is made down, wherein go up contact 3 for having better flexible copper sheet so that it with can recover well after following contact 4 contacts.

As shown in Figure 1, in the present embodiment, the hold down gag at body 1 middle part comprises a piezoelectric board 5 and a safe seesaw 6.Piezoelectric board 5 is inverted T-shape, and a location-plate 10 that is connected with body 1 is arranged in body 1, and piezoelectric board 5 passes location-plate 10.By the positioning action of location-plate 10, make piezoelectric board 5 in body 1, to slide up and down.

As shown in Figure 1, between piezoelectric board 5 bottoms and body 1, be provided with a back-moving spring 7.Under the effect of back-moving spring 7, piezoelectric board 5 is in the position of rising, and promptly piezoelectric board 5 can not be pressed on the contact 3.

On the top of piezoelectric board 5 a safe seesaw 6 is arranged, safe seesaw 6 is located to be hinged with piezoelectric board 5 in the middle.If piezoelectric board 5 moves down, safe seesaw 6 also can be followed together and move.Piezoelectric board 5 and safe seesaw 6 all adopt insulating material to make.

As shown in Figure 1, after the safety socket was installed, the live wire of power supply was connected with two following contacts 4 respectively with ground wire.But when plug 8 did not insert in the socket, last contact 3 and conducting strip 2 did not all have charged, are foolproof.

As shown in Figure 2, have only after plug 8 inserts in the jack 11 of bodies 1, two inserted sheets 81 of plug 8 are pressed on downwards together on the safe seesaw 6, and make piezoelectric board 5 to lower slider by safety seesaw 6 with when conducting strip 2 contacts.At last, contact 3 is gone up in piezoelectric board 5 compressings, and contact 3 is contacted with following contact 4.Like this, electric current will pass through last contact 3, enters after conducting strip 2 in the plug 8, and is delivered on the consuming device.

Finishing using, behind the dial-out plug 8, piezoelectric board 5 and safe seesaw 6 can return back to original position under the effect of back-moving spring 7, and last contact 3 also just utilizes the elastic recovery of self, separates with following contact 4.

As shown in Figure 3, if there is the foreign matter 9 of key and so on to insert in one of them jack 11 of body 1, foreign matter 9 at first contacts with safety seesaw 6 so.Owing to only inserted by a jack 11, safe seesaw 6 can overturn, and makes safe seesaw 6 contact this end with foreign matter 9 and descends, but can not make piezoelectric board 5 to lower slider, and electric current is entered on the contact 3.Therefore, can not switch on the foreign matter 9 this moment, is safe.Like this, just prevent the generation of contingency, guaranteed the safe handling of socket.

Claims

1, a kind of safety socket, comprise jack body (1), two conducting strips (2) are arranged at the top of body (1), be provided with two following contacts (4) in the bottom of body (1), it is characterized in that also being provided with two in body (1) bottom goes up contact (3), go up contact (3) for two and be conducted with above-mentioned two conducting strips (2) respectively, the hold down gag that contact (3) is contacted with following contact (4) of a moving seesaw-type is set in body (1).

2, safety socket according to claim 1, it is characterized in that described hold down gag comprises the piezoelectric board (5) in the body (1), piezoelectric board (5) can slide up and down in body (1), on the top of piezoelectric board (5) a safe seesaw (6) is arranged, safe seesaw (6) is located to be hinged with piezoelectric board (5) in the middle.

3, safety socket according to claim 2 is characterized in that between piezoelectric board (5) and body (1) back-moving spring (7) being set.

4, according to claim 2 or 3 described safety sockets, it is characterized in that described piezoelectric board (5) is inverted T-shape, a location-plate (10) that is connected with body (1) is arranged in body (1), piezoelectric board (5) passes location-plate (10).