CN2139315Y - Safety socket for electrical appliances - Google Patents

Abstract

The utility model discloses a safety socket for electrical appliances with safety protection function. On the basic that the utility model is composed of an original seat, a contact piece, a face cover, a wire post, etc., an insulating cover, a limiting switch, etc. are added, and the limiting switch is connected in series in the circuit to realize the safety protection function. When the insulating cover is heaved, the power supply is cut off, at this point the plugging and pulling out of the plug are absolutely safe; when the insulating cover is closed, the contact piece in the socket is provided with the voltage. So when a child uses the socket, and a finger is contacted with the metal sheet or a metal object is inserted into the hole of the socket, the safety of no electric shock can be ensured. The utility model has the advantages of safety, reliability, beautiful appearance, convenience, etc.

Description

Safety socket for electrical appliances

The utility model relates to a kind of appliance socket, especially a kind of Safety socket for electrical appliances that has limit switch.

Existing common socket as shown in Figure 1, power supply is electrically connected with contact chip by binding post, the outside is shielded by face shield, the appliance socket of Chu Shouing in the market i.e. structure for this reason.Because having life-threatening voltage on the contact chip of this socket face shield intraocular exists, people are careless sometimes when the plug attaching plug can numb electrical phenomena take place because of touching sheet metal, particularly some children mistiming that is at play is filled in metal object in the socket hole and is caused the electric shock casualty accident, brings tremendous loss to people.Fig. 2 is the circuit diagram of prior art appliance socket.

The purpose of this utility model is to release a kind of improved appliance socket, this socket starts when using at Jiang Gai can cut off the power supply on the contact chip in the socket hole, make people can plug plug definitely relievedly, closing to cover just has voltage to exist in the rear socket, thereby the electric shock phenomenon that can prevent the above-mentioned type takes place.

The utility model is to realize with following method:

One openable insulating lid is housed on the socket face shield, one presser feet and lid device itself is arranged on the lid on the rotation axis of face shield, limit switch (or limit switch of being made up of fixed contact and moving contact) is installed in base or the face shield, inlet wire binding post on the limit switch (or limit switch of being made up of moving contact, fixed contact) is connected with power supply or is electrically connected with binding post, its outlet binding post is electrically connected with contact chip, and its limit switch control knob or moving contact are corresponding with the presser feet on the insulating lid.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the structure chart of prior art socket

Fig. 2 is the internal circuit diagram of prior art socket

Fig. 3 A, Fig. 3 B, Fig. 3 C are structure chart and the circuit diagram of utility model embodiment one

Outside drawing when Fig. 4 is the utility model embodiment one naked lid

Fig. 5 is the cut-away view of the utility model embodiment one

Fig. 6 is the fundamental diagram of the utility model embodiment one

Fig. 7 is for having the open theory figure of protruding button insulating lid in the utility model

Fig. 8 be among the utility model embodiment one dynamic and static contact at the structure chart of side

Fig. 9 be among the utility model embodiment one presser feet the lid limit fundamental diagram

Figure 10 A, Figure 10 B are the structure chart of the utility model embodiment two

Figure 11 for presser feet among the utility model embodiment two on the lid limit and the structure chart of protruding button arranged

Figure 12 be among the utility model embodiment two presser feet the lid limit structure chart

Most preferred embodiment one of the present utility model sees for details as follows:

Shown in Fig. 3 A, Fig. 3 B (Fig. 3 C is an internal circuit diagram of the present utility model), the utility model is made up of face shield 1, contact chip 2, base 5, binding post 6 etc., one openable insulating lid 14 is arranged on the face shield 1, one presser feet 15 is arranged on the lid, presser feet 15 both can be at the root (shown in Fig. 3 B, Fig. 6, Fig. 8, Figure 10 B) of lid, also can be at the edge (as Fig. 9, Figure 11, shown in Figure 12) of lid, and insulating lid 14 device itself is in the rotating shaft 13 of face shield 1 and turning.The limit switch correspondence of being made up of fixed contact 10 and moving contact 12 is installed in (as Fig. 3 B, shown in Figure 9) or face shield 1 interior (as shown in Figure 8) in the base 5, quiet, moving contact is in the normally open position, between quiet, the moving contact and leave the space, moving contact 12 is corresponding with the presser feet 15 on the insulating lid, and presser feet 15 is pressed in moving contact 12 on the fixed contact 10 when closing insulating lid with assurance.Moving contact 12 is electrically connected with contact chip 2, fixed contact 10 is electrically connected with binding post 6, moving contact 12 is electrically connected with binding post 6, fixed contact 10 is electrically connected with contact chip 2, and wherein the connection between each parts can be electrically connected (shown in Fig. 3 B, Fig. 5, Fig. 8, Figure 10 B etc.) by lead 20,24 or conductive metal sheet etc.The edge of insulating lid 14 can have the groove 16 that supply lines embeds.When the resilience force of the control knob 23 of moving contact 12 or limit switch big and when being enough to make insulating lid 14 to be backed down, can be on lid and face shield (or on base) the correspondence position device is protruding mutually buckles 17 and 18, when protruding button is pawl shape, open (as shown in Figure 7) again after should pressing along direction shown in the arrow 19 in the time of opening.Fig. 4 is the front view when taking away insulating lid in the present embodiment one.Open insulating lid 14 and upwards upset by method shown in Figure 7 during use, presser feet 15 breaks away from moving contacts 12 at this moment, moving contact leaves fixed contact 10 under elastic reaction, limit switch is in dissengaged positions (shown in the double dot dash line among Fig. 6), plug supply socket this moment, equal non-transformer on the contact chip 2 of face shield 1 intraocular is so be perfectly safe; When closing insulating lid 14 again, presser feet has been pressed in moving contact on the fixed contact again, and circuit just is switched on, and just has voltage to exist on the attaching plug 9 inside being inserted in.

Most preferred embodiment two of the present utility model sees for details as follows:

As Figure 10 A, shown in Figure 10 B, most preferred embodiment two of the present utility model is similar substantially to embodiment one, the limit switch 22 that different is in the present embodiment two is not made up of the fixed contact 10 and the moving contact 12 that are installed on face shield 1 and the base 5, but ready-made limit switch 22, here the control knob on the limit switch 23 is corresponding with the presser feet 15 on the insulating lid 14, and the normally open contact group of limit switch is serially connected in the transmission line of the power supply of socket and contact chip 2, open roll up insulating lid after, presser feet 15 breaks away from the control knob 23 of limit switch, after resetting, the switch control knob promptly cuts off the electricity supply, at this moment no-voltage on the contact chip in the socket hole; When closing insulating lid 14, just presser feet is depressed control knob 23 (as Figure 10 B, Figure 11, shown in Figure 12), limit switch is conducting just, on the socket female connector 9 voltage has been arranged just at this moment.On any corresponding one group of switch on the limit switch, a joint 21 is electrically connected with contact chip 2 by lead 24, and another binding post 6 connects with power supply or is electrically connected with power-line terminal by lead 20.Using method is identical with embodiment one.

The power supply number of phases quiet in the utility model, that the group number and the socket of moving contact are connect is corresponding, as then using two groups of dynamic and static contacts when the individual event socket; As then using three or four groups of dynamic and static contacts when the three-phase socket.In like manner the selected dynamic and static sets of contacts number of switch of limit switch is also with top identical.Binding post screw 7 among the figure is in order to fastening power line, and wood screw 8 is in order to fixed socket, and screw 3 is in order to fixed visors, and rivet 4 is in order to parts such as fastening contact chips, and moving contact 12 is an end of metallic conduction sheet 11.The utlity model has characteristics such as safe and reliable, both artistic and practical.

Claims (1)

1, a kind of Safety socket for electrical appliances that has limit switch, by face shield 1, contact chip 2, base 5, binding post 6 compositions such as grade, it is characterized in that having on the face shield 1 an openable insulating lid 14, one presser feet 15 and lid itself device is arranged on the lid in the rotating shaft 13 of face shield 1, limit switch 22 (the perhaps limit switch of being made up of fixed contact 10 and moving contact 12) is installed in base 5 or the face shield 1, limit switch is (or by moving contact, the limit switch that fixed contact is formed) the inlet wire binding post on is connected with power supply or is electrically connected with binding post 6, its outlet binding post is electrically connected with contact chip 2, and its limit switch control knob 23 or moving contact 12 are corresponding with the presser feet 15 on the insulating lid 14.

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