CN201758281U

CN201758281U - Extension socket capable of realizing self locking when in power failure

Info

Publication number: CN201758281U
Application number: CN2010202438018U
Authority: CN
Inventors: 朱兆根; 洪伟
Original assignee: HUIZHOU CHANGXIANG STAR ELECTRONICS CO Ltd
Current assignee: HUIZHOU CHANGXIANG STAR ELECTRONICS CO Ltd
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-03-09
Anticipated expiration: 2020-06-30

Abstract

The utility model discloses an extension socket capable of realizing self locking when in power failure. When a circuit is powered again after being in power failure, the extension socket can still in a power failure state and can be powered again by means of starting a normally open button (SB) on the extension socket, thereby reducing accidents and saving electric energy. The extension socket is characterized in that mature relays and switch button elements are adopted, a circuit structure is designed creatively, a power failure self locking function of the extension socket can be realized, an added circuit module is small in volume, simple in structure and convenient in manufacturing, and a proper extension socket provided with the circuit module can realize the power failure self locking function. In addition, the extension socket is low in cost and easy to realize mass production.

Description

Socket cuts off self-lock

Technical field

The utility model relates to the appliance socket technical field, specifically is meant a kind of socket that has the function that cuts off self-lock.

Background technology

Socket in the market can only realize simple appliance socket function mostly, and more progressive scheme is: a socket has a total control switch, and perhaps each jack of socket all has a control switch.Above-mentioned existing socket is in concrete the application, when unexpected generation power outage, the former socket that is in on-state still is in the circuit communication state, if having forgotten the electrical equipment that will be connected originally in the socket disconnects, then when circuit was powered suddenly, electrical appliance can be in on-state immediately automatically, if this moment on-the-spot unattended operation, tend to cause the generation of accident, waste electric energy to I haven't seen you for ages.

The utility model content

Again using the harm that may cause under the no management and control state in power supply back in order to overcome existing socket, the utility model proposes a kind of socket that has the function that cuts off self-lock, when sending a telegram here again after the down circuitry, the off-position that still can keep socket, must start often driving button (SB) and just can make the socket work of switching on again in the self-locking socket, reduce the generation of accident with this, save electric energy.

For reaching above-mentioned purpose, the utility model adopts following technical scheme to realize: the socket that cuts off self-lock comprises that the module and that cuts off self-lock often drives button (SB); The described module that cuts off self-lock is provided with secondary linked switch (KM1-KM2), and when being in "on" position, can produce magnetic and make the secondary linked switch be in the AC electromagnetic coil of closure state (KM), described secondary linked switch (KM1-KM2) comprises branch switch (KM1) and branch switch (KM2); Wherein, described branch switch (KM1) series connection is controlled the break-make of live wire with this on the live wire of socket power line; Described often opening formed series arm with AC electromagnetic coil (KM) after button (SB) is in parallel with branch switch (KM2), and this series arm is connected between the live wire and zero line of socket power line.

As optimized technical scheme, the described button (SB) of often opening is not for there being lock band button switch, moment is connected the button of automatic disconnection behind the circuit when also being a kind of the click, its by a LED light be formed in parallel with a normally opened contact switch (K) again after a current-limiting resistance is connected; When nothing lock band button switch was in "on" position, LED light was bright, and when being in off-position, LED light is gone out, and whether is not in "on" position and there is lock band button switch, has also represented external circuit whether to send a telegram here, and both "on" positions are consistent.

The described module that cuts off self-lock is preferably alternating current electromagnetic relay, this alternating current electromagnetic relay is provided with AC electromagnetic coil and a pair of interlock normally opened contact, wherein AC electromagnetic coil is as AC electromagnetic coil (KM), and described a pair of interlock normally opened contact is promptly as secondary linked switch (KM1-KM2).

The cut off self-lock operation principle of socket of the utility model is as follows:

1, after the socket outage, secondary linked switch (KM1-KM2) loses magnetism under AC electromagnetic coil (KM) spring action wherein by automatic disconnection because of AC electromagnetic coil (KM), at this moment, socket loop and AC electromagnetic coil (KM) all are in off state; When powering once more, AC electromagnetic coil (KM) still opens circuit, can't adhesive secondary linked switch (KM1-KM2), so secondary linked switch (KM1-KM2), comprise that branch switch (KM1) and branch switch (KM2) all are in off state, owing to branch switch (KM1) is connected on the socket power line live wire, so socket is also opened circuit, so just can realize the auto-lock function after socket is cut off the power supply, thereby reach energy-conservation, purpose of safety;

2, when pressing when often driving button (SB), then AC electromagnetic coil (KM) energising produces magnetic with all adhesives of secondary linked switch (KM1-KM2); Unclamp and often drive button (SB), because (KM2) adhesive and with often to drive button (SB) in parallel, so AC electromagnetic coil (KM) is still connected work, secondary linked switch (KM1-KM2) just can not disconnect because of the disconnection of often driving button (SB); Socket release this moment and energising operate as normal.

The utility model has the following advantages and beneficial effect compared to existing technology:

The utility model socket that cuts off self-lock, by management and control to the back socket state that cuts off the power supply, eliminated the circuit descendant that powers again and disconnected and be not connected in the disaster hidden-trouble that the electrical appliance switch is brought in the socket for carelessness, can also play the effect of saves energy, it is regional to be specially adapted to regular outage.The utility model socket that cuts off self-lock, simple in structure, easy to use, be easy to produce in enormous quantities, with low cost, stronger practicality is arranged.

Description of drawings

Fig. 1 is the cut off self-lock circuit theory schematic diagram of socket of the utility model;

Fig. 2 is the concrete enforcement connection layout of the embodiment 1 described socket that cuts off self-lock.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.

Generally speaking, as shown in Figure 1, the utility model socket circuit theory that cuts off self-lock is as follows: comprise that the module and that cuts off self-lock often drives button (SB); The described module that cuts off self-lock is provided with secondary linked switch (KM1-KM2), and when being in "on" position, can produce magnetic and make the secondary linked switch be in the AC electromagnetic coil of closure state (KM), described secondary linked switch (KM1-KM2) comprises branch switch (KM1) and branch switch (KM2); Wherein, described branch switch (KM1) series connection is controlled the break-make of live wire with this on the live wire of socket power line; Described often opening formed series arm with AC electromagnetic coil (KM) after button (SB) is in parallel with branch switch (KM2), and this series arm is connected between the live wire and zero line of socket power line.

The described button (SB) of often opening is not for there being lock band button switch, and moment is connected the button of automatic disconnection behind the circuit when also being a kind of the click, its by a LED light be formed in parallel with a normally opened contact switch (K) again after a current-limiting resistance R connects; When nothing lock band button switch was in "on" position, LED light was bright, and when being in off-position, LED light is gone out, and whether is not in "on" position and there is lock band button switch, has also represented external circuit whether to send a telegram here, and both "on" positions are consistent.

Adopting alternating current electromagnetic relay with the described module that cuts off self-lock below is example, and detailed description is done in the socket that cuts off self-lock to the utility model.

Embodiment 1

As shown in Figure 2, the present embodiment socket that cuts off self-lock comprises: one of the socket that the current-limiting resistance R of JQX-13FA/2Z type alternating current electromagnetic relay, normally opened contact switch (K), LED light, 82k Ω (1/2W) and maximum power are 2200W.Wherein, do not have lock push-button switch (SB) and LED light be in parallel after again with current-limiting resistance R composition series arm.

Described JQX-13FA/2Z type alternating current electromagnetic relay inside comprises AC electromagnetic coil and a pair of interlock normally opened contact.Its inner AC electromagnetic coil can be used as AC electromagnetic coil shown in Figure 1 (KM); A pair of interlock normally opened contact promptly works as secondary linked switch (KM1-KM2) shown in Figure 1.

The button of automatic disconnection behind moment connection circuit when described nothing lock push-button switch (SB) is a kind of the click.Utilize light-emitting diode can play the effect whether the indication external power has electricity.

Fig. 2 has also provided the concrete connection layout of the socket that cuts off self-lock:

The JQX-13FA/2Z type alternating current electromagnetic relay rated voltage 220V that is adopted in the present embodiment, contact maximum permissible current 10A is because of normally-closed contact not effect in the present embodiment, so cast out (not indicating among the figure).Normally opened contact (KM1) series connection of alternating current electromagnetic relay is received in the live wire of socket; Receive the live wire and the zero line side of socket after AC electromagnetic coil (KM) series connection of normally opened contact (KM1) and relay; LED, current-limiting resistance R and normally opened contact switch (K) do not have lock band button switch (SB) the common composition, the terminal 1 and the terminal 5 of the normally opened contact switch (K) of push-button switch (SB) and resistance R series connection back cut-in relay, its effect is to form relation in parallel with the normally opened contact (KM2) of relay; LED can play the effect whether the indication external power has electricity.

After down circuitry, AC relay coil (KM) loses magnetism, and interlock normally opened contact (KM1-KM2) is disconnected under the effect of relay contained spring, so socket and AC relay coil (KM) all are in off state;

When powering once more, AC relay coil (KM) still opens circuit not can adhesive interlock normally opened contact (KM1-KM2), so interlock normally opened contact (KM1-KM2) still is in off state, because normally opened contact (KM1) is connected in the live wire loop of socket, thereby socket can not switch on, thereby realized the function that cuts off self-lock.

When powering once more, this moment is bright as the LED of indicator light, plays the effect that the indication external power has electricity; The people is when clicking button (SB), and AC electromagnetic coil (KM) loop is connected, and coil produces magnetic, adhesive interlock normally opened contact (KM1-KM2), this moment LED by short circuit, LED goes out.The interlock normally opened contact (KM1-KM2) of relay is in case by adhesive, and the live wire loop of socket and AC electromagnetic coil (KM) loop all are switched on, and socket is in "on" position.

The cut off self-lock innovation part of socket of the utility model is: relay and shift knob element that utilization is ripe, innovative design circuit structure, the function that cuts off self-lock of having accomplished socket; The circuit module volume that adds is little, simple in structure, easy to make, can realize the function that cuts off self-lock as long as select for use suitable socket that this module is installed into.The cheap large-scale mass production that is easy to of product price.

The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.

Claims

1. the socket that cuts off self-lock is characterized in that: comprise that the module and that cuts off self-lock often drives button (SB); The described module that cuts off self-lock is provided with secondary linked switch (KM1-KM2), and when being in "on" position, can produce magnetic and make the secondary linked switch be in the AC electromagnetic coil of closure state (KM), described secondary linked switch (KM1-KM2) comprises branch switch (KM1) and branch switch (KM2); Wherein, described branch switch (KM1) series connection is controlled the break-make of live wire with this on the live wire of socket power line; Described often opening formed series arm with AC electromagnetic coil (KM) after button (SB) is in parallel with branch switch (KM2), and this series arm is connected between the live wire and zero line of socket power line.

2. the socket that cuts off self-lock according to claim 1 is characterized in that: the described button (SB) of often opening is not for there being lock band button switch, its by a LED light be formed in parallel with a normally opened contact switch (K) again after a current-limiting resistance is connected.

3. the socket that cuts off self-lock according to claim 1 and 2, it is characterized in that: the described module that cuts off self-lock is an alternating current electromagnetic relay, this alternating current electromagnetic relay is provided with AC electromagnetic coil and a pair of interlock normally opened contact, wherein AC electromagnetic coil is as AC electromagnetic coil (KM), and described a pair of interlock normally opened contact is promptly as secondary linked switch (KM1-KM2).