CN2176305Y - Bicycle alarm against burglar - Google Patents
Bicycle alarm against burglar Download PDFInfo
- Publication number
- CN2176305Y CN2176305Y CN 93232816 CN93232816U CN2176305Y CN 2176305 Y CN2176305 Y CN 2176305Y CN 93232816 CN93232816 CN 93232816 CN 93232816 U CN93232816 U CN 93232816U CN 2176305 Y CN2176305 Y CN 2176305Y
- Authority
- CN
- China
- Prior art keywords
- theft alarm
- alarm
- bicycle
- theft
- shell body
- 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
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- Burglar Alarm Systems (AREA)
Abstract
The utility model relates to an anti-theft alarm. The anti-theft alarm is mainly used for the alarming of a bicycle to prevent a thief stealing. The anti-theft alarm is can also be used for the protection and the anti-theft alarm of a tricycle, a motorcycle, and a room when a thief enters, etc. The anti-theft alarm comprises a shell body 2, a circuit board 4, an alarm circuit 5, a lock 9, a switch 12, and a battery 13., A blocking cover member 8 is arranged on the sound transmission hole 7 of the shell body 2. A socket 14 and a plug 15 are arranged on the shell body 2 to be connected with an outer conducting wire 16. The blocking cover member 8 is a washer connecting member. An inner shell 3 with a sound amplification pipe 6 is arranged in the shell body 2. Therefore, the purposes that the theft prevention of the anti-theft alarm is reliable, the sound transmission hole 7 on the shell body 2 can not be closed by an adhesive tape paper, and the ordinary shake of the anti-theft alarm can not send out false alarm are achieved.
Description
The utility model relates to burglar alarm.Be mainly used in the warning that bicycle prevents that the thief from stealing; Also can be used for three-wheel vehicle and motor bike, and the room advances the theft-proof warnings of guarantor's treasure such as thief.
At present, in background technology, be used for the of a great variety of bicycle anti-theft alarm device and bicycle alarm lock.As: infrared general-purpose annunciator of ZL90205372.8 and CN2067737U bicycle alarm lock; They mainly are made of housing, circuit card, warning circuit, lock, switch and battery.The where there is light because the sound transmission aperture on the housing all is exposed, the robber is as long as just close the stickup of the sound transmission aperture on the housing is two-layer with plastic adhesive tape paper, chimes of doom can only be in housing sounding, can't spread out of outside the housing; In addition, rock usually and will send the flase alarm phenomenon.Therefore, the purpose of out of reach bicycle anti-theft alarm.And they can only be used for the warning of a bicycle theft-prevention; And cost an arm and a leg, as infrared general-purpose annunciator, every of retail price is up to 168 yuan, the price of suitable half bicycle.So, still need to change new creation to being used for the bicycle anti-theft alarm device.
The utility model purpose is at being used for the defective that bicycle anti-theft alarm device and bicycle alarm lock exist, can't closing the sound transmission aperture on the housing and rock the bicycle anti-theft alarm device that can not send flase alarm usually with adhesive tape and provide a kind of.
Finish above-mentioned purpose of the present utility model by following technical conceive and implementation.
This bicycle anti-theft alarm device comprises housing, circuit card, warning circuit, lock, switch and battery, it is characterized in that described housing has the face of sound transmission aperture to be provided with the block cover part.Described housing is provided with socket and is connected with outer conductor with plug.Described block cover part is the packing ring attaching parts.Be provided with inner casing in the described housing with amplifying tube.
The utility model is compared with aforementioned background art: not only antitheft reliable, and can't close the sound transmission aperture of housing and do not rock usually and can send flase alarm with adhesive tape; And, still can be used for some bicycle theft-preventions, good looking appearance, advantage such as low and life-span of cost is long.
Accompanying drawing is represented the concrete structure of the utility model bicycle anti-theft alarm device.
Fig. 1 is this bicycle anti-theft alarm device.
Fig. 2 is the block cover part of this bicycle anti-theft alarm device.
Fig. 3 is the inner casing of this bicycle anti-theft alarm device.
Fig. 4 is the circuit of this bicycle anti-theft alarm device.
Describe details of the present utility model and operating mode in detail below in conjunction with accompanying drawing.
This bicycle anti-theft alarm device comprises shell 1, housing 2, circuit card 4, warning circuit 5, lock 9, switch 12 and battery 13, it is characterized in that described housing 2 has the face of sound transmission aperture 7 to be provided with block cover part 8.Housing 2 is provided with socket 14 and is connected with outer conductor 16 with plug 15.Block cover part 8 is packing ring attaching partss.Be provided with inner casing 3 in the housing 2 with amplifying tube 6.Warning circuit 5 is provided with bridge circuit 17.Outer conductor 16 is by lead 16a, 16b, 16c coiled rope lead in the bridge circuit 17.
The block cover part 8 of this device by the leading bolted connection in the bicycle handle on bicycle, interior to the earhole that screws in block cover part 8 down by screw from housing 2, sound transmission aperture 7 is hidden in block cover part 8, the socket 14 that cover shell 1 on housing 2, the plug 15 that rope lead 16 is connected insert on the housing 2 keeps off the speaking terminal limit that constitutes at housing 2 and block cover part 8.Thereby, reach antitheft reliable, can't close the sound transmission aperture 7 of housing 2 and rock the purpose that can not send flase alarm usually with adhesive tape.When bicycle parking, by outer conductor 16 some bicycles are stepped on down the spider around living from seat, if single bicycle uses, outer conductor 16 centers on the bicycle shed hack lever or with the parking area railing or with fixture strings such as setting bar, again plug 15 is inserted socket 14; Rotation lock 9 then, by lock cross bar 10 inner horizontal plate on the shell 1 11 pushed down; Simultaneously, the reed butt of switch 12, battery 13 power supplies.Because R1, R2, R3, R4 resistance equate in the bridge circuit 17, A, B point voltage equate that BG1, BG2 base stage equate that with emissivity voltage circuit ends, and BG3 also ends, and circuit is on the alert.In case rope lead 16 is by short circuit, BG2 base voltage is higher than emissivity voltage, the BG2 conducting, and the also intrinsic bias current of BG3 and conducting trigger that K9561 produces the long time of alarm sound in the warning circuit 5.The BG1 base tension is higher than emissivity voltage and conducting in short-term when rope lead 16 quilts are disconnected, in like manner, triggers KD9561 and produces the long time of alarm sound.No matter be after BG1 or BG2 are switched on, because BG collecting electrode high potential, D1 conducting and make the BG1 base stage keep high potential, circuit produces self-locking, at this moment, even the rope lead restores to the original state, also can send the warning sound with keeping.If need to eliminate the warning sound, have only rotation lock 9, the reed of switch 12 is disconnected, battery 13 is stopped power supply, and could eliminate the warning sound.
Claims (4)
1, a kind of bicycle anti-theft alarm device comprises housing (2), circuit card (4), warning circuit (5), lock (9), switch (12) and battery (13), it is characterized in that described housing (2) has the face of sound transmission aperture (7) to be provided with block cover part (8).
2, bicycle anti-theft alarm device according to claim 1 is characterized in that described housing (2) is provided with socket (14) and is connected with outer conductor (16) with plug (15).
3, bicycle anti-theft alarm device according to claim 1 and 2 is characterized in that described block cover part (8) is the packing ring attaching parts.
4, bicycle anti-theft alarm device according to claim 1 and 2 is characterized in that being provided with in the described housing (2) the have amplifying tube inner casing (3) of (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93232816 CN2176305Y (en) | 1993-12-14 | 1993-12-14 | Bicycle alarm against burglar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93232816 CN2176305Y (en) | 1993-12-14 | 1993-12-14 | Bicycle alarm against burglar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2176305Y true CN2176305Y (en) | 1994-09-07 |
Family
ID=33808925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93232816 Expired - Fee Related CN2176305Y (en) | 1993-12-14 | 1993-12-14 | Bicycle alarm against burglar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2176305Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058769A (en) * | 2017-12-06 | 2018-05-22 | 宁波市江北义盈工贸有限公司 | A kind of multifunction bicycle |
-
1993
- 1993-12-14 CN CN 93232816 patent/CN2176305Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058769A (en) * | 2017-12-06 | 2018-05-22 | 宁波市江北义盈工贸有限公司 | A kind of multifunction bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |