CN2292306Y - Theft-proof alarm - Google Patents

Theft-proof alarm Download PDF

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Publication number
CN2292306Y
CN2292306Y CN 97223166 CN97223166U CN2292306Y CN 2292306 Y CN2292306 Y CN 2292306Y CN 97223166 CN97223166 CN 97223166 CN 97223166 U CN97223166 U CN 97223166U CN 2292306 Y CN2292306 Y CN 2292306Y
Authority
CN
China
Prior art keywords
alarm
box
switch
travel switch
push rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 97223166
Other languages
Chinese (zh)
Inventor
叶保剑
Original Assignee
叶保剑
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 叶保剑 filed Critical 叶保剑
Priority to CN 97223166 priority Critical patent/CN2292306Y/en
Application granted granted Critical
Publication of CN2292306Y publication Critical patent/CN2292306Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a theft-proof alarm device which can solve the problem that the existing alarm can not match with a general double-bolt door lock well. A travel switch is arranged in an alarm circuit. A switch push rod is arranged on the corresponding position of a box. The push rod can move leftward and rightward to control the closing and opening of the travel switch a small hole of about 5 mm is drill at the position of the tail part of the existing double-bolt door lock corresponding to a double-bolt plate; then the switch push rod is extended into a lock body; finally the box of the alarm t is fixed on a door. The alarm has the advantages of cost, convenient installation and reliable performance. The utility model can be well matched with the existing double-bolt door lock for use.

Description

Burglar alarm
The utility model relates to a kind of burglar alarm.
At present and the burglar alarm that is used of door lock all be installed in lock body inside, can not be used with existing general two flappers locks well.
The purpose of this utility model provides a kind of easy for installation, can cooperate good burglar alarm with existing two flapper locks.
The purpose of this utility model can realize by following proposal: a kind of burglar alarm, form by alarm box, warning circuit and switch push rod; Wherein, a travel switch is set, as power switch in the alarm circuit.Corresponding to travel switch, a switch push rod is set, form by apical axis, positioning seat and spring; Positioning seat is fixed in a side of close door lock on the alarm box, and there is a manhole centre; Apical axis passes the through hole of positioning seat, one section in box one section outside box, one section tail end in box is connected with a spring; The other end of spring is fixed on the positioning seat.Can contract when the apical axis outer end is squeezed in box, touch travel switch and disconnect, when external force disappeared, apical axis was subjected to spring action and resets, the travel switch closure.
The utility model is easy to and has now two flapper locks and is used, and is easy for installation, as long as the aperture about mounted pair of flapper lock afterbody is corresponding to 5mm of position brill of two hyoplastrons stretches into apical axis wherein; Then the alarm box is fixed on the door lock afterbody, again with the magnet cartridge of magnetic switch on the mouth frame, tongue tube is contained in door goes up and get final product.This alarm low price, easy for installation, dependable performance.
Describe in detail bright below in conjunction with the accompanying drawing ocean:
Fig. 1 is the wiring layout of alarm and door lock.
Fig. 2 is the circuit diagram of alarm.
Wherein, the 1st, door lock; The 2nd, burglar alarm;
The 3rd, apical axis; The 4th, travel switch.
A kind of burglar alarm is made up of box, circuit and switch push rod.A travel switch K is set, as power switch in its circuit; Corresponding to travel switch K, a switch push rod is set, form by apical axis 3, positioning seat and spring; Positioning seat is fixed in a side of close door lock on the box, and there is a manhole centre; Apical axis 3 passes the through hole of positioning seat, one section in box one section outside box, one section tail end in box is connected with a spring; The other end of spring is fixed on the positioning seat.When the apical axis outer end is squeezed, can in box, contract, touch travel switch 4 and disconnect; When external force disappeared, apical axis was subjected to spring action and resets; Travel switch 4 closures.During use, door is shut, made the tongue tube adhesive, R 1, and D 1The positive contact earthing; When with key two tongues of tapered end being locked, apical axis 3 resets because of extruding force disappears; Travel switch K is closed to be connected; The warning circuit energized enters on the alert; When the robber pried open door, magnetic switch disconnected, and power supply is through R 1One D 1To the controllable silicon SCR triggering and conducting, alarm sends alerting signal.Have only with key two tongues of tapered end are regained, travel switch disconnects, and could remove warning.

Claims (2)

  1. A kind of burglar alarm is made up of alarm box and warning circuit, it is characterized in that
    (1) in circuit, is provided with travel switch K;
  2. (2) in position corresponding to travel switch K, a switch push rod is set, form by apical axis 3, positioning seat and spring; Positioning seat is fixed in a side of close door lock on the alarm box, and there is a manhole centre; Apical axis 3 passes the through hole of positioning seat, and one section tail end in the alarm box is connected with spring; And the other end of spring is fixed on the positioning seat.
CN 97223166 1997-05-28 1997-05-28 Theft-proof alarm Expired - Fee Related CN2292306Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97223166 CN2292306Y (en) 1997-05-28 1997-05-28 Theft-proof alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97223166 CN2292306Y (en) 1997-05-28 1997-05-28 Theft-proof alarm

Publications (1)

Publication Number Publication Date
CN2292306Y true CN2292306Y (en) 1998-09-23

Family

ID=33937989

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97223166 Expired - Fee Related CN2292306Y (en) 1997-05-28 1997-05-28 Theft-proof alarm

Country Status (1)

Country Link
CN (1) CN2292306Y (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee