CN2553040Y

CN2553040Y - Safety lock for lighter

Info

Publication number: CN2553040Y
Application number: CN 02271809
Authority: CN
Inventors: 肖奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-18
Filing date: 2002-07-18
Publication date: 2003-05-28
Anticipated expiration: 2012-07-18

Abstract

The utility model discloses a safe lock of a lighter, mainly aiming to tackle the problems in the prior art, such as high manufacturing cost, which is characterized in that: a password set-up circuit is used to set the safe password value of the lighter; after receiving a password entered by a user, a keyboard circuit sends the password to a keyboard scanning and password comparison circuit, which in turn compares the password entered with the safe password value set by the password set-up circuit, and transmits the relevant signal to a control circuit; thus the control circuit controls the on-off of an ignition device of the lighter. By adopting the safe lock in the lighter, the safe password value set by the password set-up circuit is compared with the password entered by the user by the keyboard scanning and password comparison circuit, and the on-off of the ignition device in the lighter can be controlled by a control circuit; therefore, when the two passwords are in contradiction, the lighter can be effectively prevented from being utilized. The utility model has the advantages of low manufacturing cost due to the primary adoption of electronic elements, as well as the strong applicability to low-cost lighters.

Description

The safety lock of lighter

Technical field

The utility model relates to lighter, particularly the safety device of lighter.

Background technology

Along with the convenience of lighter because of its use, replace match to become people's main firing tools more and more, the safety that lighter uses, prevent that especially the safety that children misapply also more and more is subject to people's attention, some areas have in the world begun legislation, safety lock is equipped with in requirement on lighter, to prevent that children from misapplying, and the condition of safety lock as the market access will be housed on the lighter of low price, at present, the safety lock of lighter mainly is mechanical coded lock, the multidigit password promptly is set on the safety lock of lighter, only when a plurality of machinery sign indicating numbers on the safety lock are rotated to the position corresponding with password, the ignition control device of lighter could be worked, when the machinery sign indicating number does not rotate to the position corresponding with password, locking lighter ignition control device can not be struck sparks lighter, thereby guarantees that children can not misapply lighter and cause the infringement that is difficult to predict; The lighter safety lock of this structure, simple in structure, reliability height, but its manufacturing cost height are unsuitable for being used on the low price lighter.

The utility model content

The purpose of this utility model is to provide a kind of safety lock of lighter, can effectively guarantee the safety that lighter uses, and low cost of manufacture.

The safety lock of lighter described in the utility model, contain the lighter ignition control device, keyboard and by the keyboard circuit of Keyboard Control, the keyboard circuit is connected with keyboard scan and password alternative route, keyboard scan and password alternative route also are connected with control circuit with the password setting circuit, the security password value of lighter is set by the password setting circuit, after the keyboard circuit receives the password of user's input, password value is sent to keyboard scan and password alternative route, keyboard scan and password alternative route compare the security password value of this password value and the setting of password setting circuit, and transmit corresponding signal to control circuit, by the unlatching of control circuit control lighter igniter or close.

Because the safety lock of lighter described in the utility model, by keyboard scan and alternative route the security password value of password setting circuit setting and the password value of user's input are compared, the unlatching of control lighter ignition control device or close, password not to the time effectively guarantee that lighter can not use, thereby guarantee the safety that lighter uses, and mainly adopting electronic component, its low cost of manufacture is particularly suitable for lighter at a low price.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail:

Fig. 1 is the igniter of mechanical type lighter;

Fig. 2 is the igniter of electronic type lighter;

Fig. 3 is the ceramic body discharge ignition apparatus;

Fig. 4 is circuit theory diagrams of the present utility model;

Fig. 5 is the circuit diagram of a kind of specific embodiment of the utility model;

The specific embodiment

The safety lock of lighter described in the utility model, as Fig. 4, contain the lighter ignition control device, keyboard and by the keyboard circuit of Keyboard Control, the keyboard circuit is connected with keyboard scan and password alternative route, keyboard scan and password alternative route also are connected with control circuit with the password setting circuit, the security password value of lighter is set by the password setting circuit, after the keyboard circuit receives the password of user's input, password value is sent to keyboard scan and password alternative route, keyboard scan and password alternative route compare the security password value of this password value and the setting of password setting circuit, and transmit corresponding signal to control circuit, by the unlatching of control circuit control lighter igniter or close;

Described lighter igniter, as Fig. 1,2,3, Fig. 1 is a mechanical type flint sparking mode, stir metal gear by manpower, metal gear and flint friction produce spark, light lighter, Fig. 2 is an electronic ignition mode, and K switch 2 is connected the left side at ordinary times, electric capacity is in charged state, 2 dozens of K switch are to the right during igniting, and electric capacity discharges by transformer, and the transformer secondary output coil can be responded to and produces the high pressure that is higher than 10KV simultaneously, produce spark discharge and light lighter, Fig. 3 is a ceramic body discharge igniting mode, stirs metal hammer body compression spring building and hits ceramic body and produce nearly 15KV high pressure, produces spark discharge and lights lighter.Described these lighter ignition control devices can open or close the air supply pipe of lighter by described control circuit control electromagnetic valve; Or, open or the mechanical device of locking lighter igniting or the cover of striking sparks by described control circuit control electromagnetic lock or electric mortise lock; For the electronic type lighter,, be switched on or switched off the circuit of electronic ignition device, as Fig. 5 by control circuit gauge tap pipe.

Described keyboard scan and password alternative route, form with the corresponding multichannel input nand gate of biconditional gate quantity and a not gate by the biconditional gates, one of a plurality of two tunnel inputs as required, the password setting circuit is made of a plurality of bouncing pilotages, make a pin ground connection of the biconditional gate of keyboard scan and password alternative route by the bouncing pilotage short circuit, bouncing pilotage disconnects and then connects high level; The a plurality of key switches of keyboard chord route are formed, and are connected on respectively on another pin of biconditional gate of keyboard scan and password alternative route, will make another pin ground connection of corresponding biconditional gate when key is pressed, otherwise this pin will connect high level; Control line contains switching tube and constitutes, or the different structure that is provided with according to the utility model aforesaid way;

When lighter was in unused state, K switch 2 was connected the left side, and electric capacity is in charged state; When the user uses lighter, by pressing the corresponding key input of code keypad password; When people press the down-firing button, K1 is connected subsequently, the energising of test alternative route enters duty; When the key of pressing is consistent with corresponding password setting bouncing pilotage, the biconditional gate that is connected with them will be exported high level, if input password and password setting are in full accord, a plurality of biconditional gates are exported high level entirely, this moment, NAND gate was with output low level, change high level into by not gate, make the control circuit switching tube be in conducting state; 2 dozens of K switch are to the right subsequently, and electric capacity is by transformer, switching tube discharge, and the transformer secondary output coil can be responded to and produces the high pressure that is higher than 10KV simultaneously, produces spark discharge and lights lighter.

If a password input error arranged, then its corresponding biconditional gate is output low level, thereby NAND gate output high level changes low level into through not gate, and this moment, the control circuit switching tube was in cut-off state.

Claims

1. the safety lock of lighter, it is characterized in that: contain the lighter ignition control device, keyboard and by the keyboard circuit of Keyboard Control, the keyboard circuit is connected with keyboard scan and password alternative route, keyboard scan and password alternative route also are connected with control circuit with the password setting circuit, the security password value of lighter is set by the password setting circuit, after the keyboard circuit receives the password of user's input, password value is sent to keyboard scan and password alternative route, keyboard scan and password alternative route compare the security password value of this password value and the setting of password setting circuit, and transmit corresponding signal to control circuit, by the unlatching of control circuit control lighter igniter or close.

2. the safety lock of lighter according to claim 1, it is characterized in that: described keyboard scan and password alternative route, form with the corresponding multichannel input nand gate of biconditional gate quantity and a not gate by the biconditional gates, one of a plurality of two tunnel inputs as required, the password setting circuit is made of a plurality of bouncing pilotages, make a pin ground connection of the biconditional gate of keyboard scan and password alternative route by the bouncing pilotage short circuit, bouncing pilotage disconnects and then connects high level; The a plurality of locking buttons of keyboard chord route are formed, and are connected on respectively on another pin of biconditional gate of keyboard scan and password alternative route, will make another pin ground connection of corresponding biconditional gate when key is pressed, otherwise this pin will connect high level.

3. the safety lock of lighter according to claim 1 and 2 is characterized in that: described lighter ignition control device, by described control circuit control electromagnetic valve, open or close the air supply pipe of lighter,

4. the safety lock of lighter according to claim 1 and 2 is characterized in that: described lighter ignition control device, by described control circuit control electromagnetic lock or electric mortise lock, open or the mechanical device or the sparking cover of locking lighter igniting.

5. the safety lock of lighter according to claim 1 and 2, it is characterized in that: described lighter ignition control device by control circuit gauge tap pipe, is switched on or switched off the circuit of electronic ignition device.