CN2857185Y - Opening detector of machine cover - Google Patents
Opening detector of machine cover Download PDFInfo
- Publication number
- CN2857185Y CN2857185Y CN 200520036772 CN200520036772U CN2857185Y CN 2857185 Y CN2857185 Y CN 2857185Y CN 200520036772 CN200520036772 CN 200520036772 CN 200520036772 U CN200520036772 U CN 200520036772U CN 2857185 Y CN2857185 Y CN 2857185Y
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- circuit
- cover
- cell
- checkout gear
- contact
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Abstract
An opening detector of machine cover, belongs to the machine switch and the electronic circuit field. A projecting point, a machine switch and a contact, acting with the machine cover switching arranged on the cover of the detected device, and the contact is connected to the signal detecting store circuit, having an initial state input and a machine cover detecting output circuit arranged therein. The machine cover is determined whether to open due to the height of the level in the outputting port. The computer storing information in the detected device is not allowed to open to steal, while the authorized person just pick up by the special device. Using the detected device is beneficial for the safe use of the device and the solve after opened to steal. The device circuit has simple structure, low cost. The device can be charged or supplied by the outer power, the cell is in the charging state when an outer power supply is arranged, thereby the life of the cell is greatly prolonged, to avoid the trouble to frequently change the cell. Also a cell low pressure comparing circuit is arranged to caution the exhaust of the quantity of the cell to provide greater convenience for the users. The device can be used in the tax controlled gathering machine and the similar usage condition for detecting on the device.
Description
(1) technical field: the utility model is an apparatus lid opening detecting device, particularly uses the detection of the apparatus lid opening of what tax-control cash register and similar behaviour in service equipment.Belong to electric switch class (H01H) and measure electric variable class (G01R).
(2) background technology:
Existing cover opening and closing detection mode generally has following several: 1. pure mechanical system.2. Photoelectric Detection mode.3. electromagnetic detection mode.4. mechanical switch adds the electronics detection mode.Variety of way differs from one another and is not enough, generally needs to select suitable mode according to the purpose that detected equipment needs this function to reach.
Open or developing tax-control cash register or the similar equipment of behaviour in service, it operates with following mode: this cash register is by casing surface button or scanner input data, and get receipt by printer, information on the receipt all deposits in the interior memory of tax-control cash register simultaneously, so the cover of this tax-control cash register shell is in not open mode fully.When the user who is authorized to (as national tax, land tax department) needs to extract its internal information, need to propose with special equipment.For realizing this kind behaviour in service, exploitation is used for the apparatus lid opening detecting device of tax-control cash register or similar equipment and just brings into schedule.
For above-mentioned tax-control cash register or the required apparatus lid opening detecting device of similar devices, if select pure mechanical system device, then complex structure cost height for use.If adopt the device of Photoelectric Detection mode, then the optoelectronic switch power consumption is big.Chinese patent discloses name and has been called a kind of electromagnetic detection mode of ' rotation angle detection apparatus ' (02160466) genus, though power consumption is lower than Photoelectric Detection mode, but this device is to carry out the detection of steering manipulation angle with magnetoresistive transducer with the calculation process of the CPU that links to each other, belong to main with what angular surveying field, be not suitable for being used for the detection of the apparatus lid opening of the said equipment of the present invention, and electronic equipment complexity, cost height.
(3) summary of the invention: apparatus lid opening detecting device that the utility model proposes and detection method, be exactly characteristics according to above-mentioned existing cover opening and closing detection mode, select a kind of mechanical switch to add the electronics detection mode, make it when the requiring of the function that satisfies the required detection apparatus lid opening of detected equipment, simple in structure, low in energy consumption.Its technical scheme is as follows:
Apparatus lid opening detecting device is characterized in that this device comprises:
A. installation tool sense switch 3 (following summary is a circuit 3) on the detected equipment 6: it comprises the prominent point 6.1 on the cover that cooperatively interacts, the mechanical switch of changing two positions at least 3.1 and the corresponding contact on the lower casing.B. establish the input memory circuit 4 (following summary is a circuit 4) that contains integrated circuit, it is connected with contact in the mechanical detection switch, and is provided with initial condition input circuit 4.1 and cover detection output circuit 4.3.
Above-mentioned mechanical switch 3.1 can adopt the commercially available button that touches.Above-mentioned prominent point 6.1 can adopt prominent point of fixing column or the spacing prominent point of rotation.Above-mentioned initial condition input circuit 4.1 (following summary is a circuit 4.1) can adopt the circuit of a high level Vi, the diode D4.1, filter capacitor C4.1, pull down resistor R4.11 and the R4.12 that comprise input.Above-mentioned high level Vi can adopt the direct impulse signal.Above-mentioned cover detects output circuit 4.3 interior (following summary is a circuit 4.3) can adopt the circuit that contains diode D4.3, pull down resistor R4.31 and R4.32 and filter capacitor C4.3.
This apparatus lid opening detecting device also can be set up battery low-voltage comparison circuit 5 (following summary is a circuit 5), and it is provided with integrated circuit 5.2, and is connected with rechargeable battery 2, and its output is established and detected the caution port.
The power supply of this apparatus lid opening detecting device can adopt following circuit: establish the voltage that links to each other with external direct current power supply Vcc and switch and battery charger 1 (following summary is a circuit 1), and charged to rechargeable battery 2 (following summary is a circuit 2) by it; Whole apparatus lid opening detecting device is by rechargeable battery 2 or external power supply power supply.Can establish the circuit that contains current-limiting resistance R1.1 and diode D1 in this voltage switching and the battery charger 1.
The utility model beneficial effect: i. can determine just by this device detection port whether equipment 6 was opened, and just this equipment is safe in utilization.As be used for tax-control cash register, and helping relevant information placate certificate preservation safely and reliably in the machine, the behavior that can prevent to evade the tax takes place.If oneself is opened, the memory information change, this device helps public security and supervision department to track down.Ii. adopt the commercially available prod contact button, simple in structure, cost is low.Because of the main behaviour in service of this mechanical switch for closing, few when opening, therefore select for use the low contact button of cost to suit.Iii. realize the input memory function of mechanical switch with integrated circuit 4.2 and input high level or positive pulse mode, circuit is simple, is fit to the detection of equipment 6.Iii. the apparatus lid opening checkout equipment adopts rechargeable battery or external power supply to power, and when external power supply, rechargeable battery is in charged state, can prolong the service time of battery so greatly, has avoided the trouble of frequent replacing battery.Iv. this device is provided with the battery low-voltage comparison circuit, and when cell voltage is crossed when low, whether voltage comparator circuit output caution exhausts great convenience is provided for the user understands the energy content of battery.
(4) description of drawings:
Fig. 1 the utility model block diagram
Fig. 2 the utility model circuit diagram
Mechanical switch 3.1 and contact position schematic diagram when detected equipment 6 covers of Fig. 3 are closed
Mechanical switch 3.1 and contact position schematic diagram during detected equipment 6 apparatus lid openings of Fig. 4
Fig. 5 Fig. 4 K is to view
(5) embodiment:
See Fig. 3, when detected equipment 6 covers 6.2 are closed, be pressed in pressure key 3.2 tops of touching button 3.1 by the prominent point 6.1 of the fixing column shape in cover below, make and press key to move down, two slide plates 3.3 downward (slide plate is embedded in and presses on the key) of pressing key are fixed in pushing, make two slide plates break away from top two contact E and F respectively, contact C and normally-closed contact A are connected, contact D and normally-closed contact B connect; At this moment, be compressed at the spring 3.4 of pressing key and touch between the button base plate.See Fig. 4, when detected equipment 6 apparatus lid openings, prominent point 6.1 breaks away from presses keys 3.2, the spring 3.4 of compression produces expansion forces, promotes to press key upwards to move, this moment two slide plates with on move, break away from below two contact A or B respectively, contact C and normally opened contact E are connected, contact D and normally opened contact F connect.See Fig. 5, each slide plate 3.3 cross section is a U-shaped, can clamp each contact piece A1, C1, E1 front end, and the connection of each contact and disengaging are to move up and down with each contact piece slide relative with slide plate to realize.
See Fig. 2, contact C and A connected when cover was closed, and D and B connect.Because of A does not connect any circuit, contact E and F are off-state (F point ground connection), so A, C, E, F are inoperative to circuit 4.Instrument slowly reaches about 3.6 volts (see that each waits site BAT among the figure, represent to charge) to contact B and D charging by the rechargeable battery E2 in the circuit 2.To circuit 4.1 inputs one high level Vi, pin 2 D0 of pin place level (high level) in the integrated circuit 4.2 by external circuit this moment, and at circuit 4.3 detection port 4.3A places output high level.
Diode D4.1 bonding is to input in the circuit 4.1, and filter capacitor C4.1 can adopt the multilayer Leaded Ceramic Disc Capacitor.And need set and draw resistance R 4.11 and R4.12.
See Fig. 2, contact C and E connect during apparatus lid opening, and D and F connect.This moment by rechargeable battery E2 (3.6 volts) from the C point to integrated circuit 4.2 (model 74HC573) pin 11 input and latch signals; Meanwhile contact D and the equal ground connection of F in the circuit 3, this D0 of place point is low level (in the circuit 3), D0 point in the circuit 4.2 also is a low level, this moment is under the effect of 11 pin latch signals, 2 pin D0 places and 19 pin are equipotential, be electronegative potential, so this moment, testing circuit 4.3 output detection port 4.3A places also were low level.
Diode D4.3 restriction outbound course in the circuit 4.3, and pull down resistor R4.31 and R4.32 and filter capacitor C4.3 are set output level is handled.
See Fig. 1 and Fig. 2, limit leakage resistance R1.1 and realize the diode D1 of unidirectional input of circuit 1 domestic demand.Also can set up current-limiting resistance R1.2 and filter capacitor C1.Power to circuit 4 through circuit 1 with to rechargeable battery 2 chargings with through 20 pin by external direct current power supply Vcc input.
See Fig. 1 and Fig. 2, establish integrated circuit 5.2 (model MX9016) and bleeder circuit 5.1 (establishing divider resistance R5.11, R5.12 and filter capacitor C5.1 in it) in the circuit 5.3 pin are than 2 pin voltage height in the normal condition circuit 5.2, and 6 pin are exported high level; When rechargeable battery E2 electric weight slowly reduces, through bleeder circuit, it is lower than 2 pin voltages to present 3 pin, and 6 pin output low levels just can be warned battery electric quantity by detection and exhaust in detected equipment 6.R5 is a pull-up resistor among the figure.
Claims (8)
1. apparatus lid opening detecting device is characterized in that this device comprises:
A. go up installation tool sense switch (3) at detected equipment (6): it comprises prominent point (6.1), the mechanical switch of changing two positions at least (3.1) on the lower casing and corresponding contact on the cover that cooperatively interacts;
B. establish the input memory circuit (4) that contains integrated circuit, it is connected with contact in the mechanical detection switch, and is provided with initial condition input circuit (4.1) and cover detection output circuit (4.3).
2. by the described checkout gear of claim 1, it is characterized in that described mechanical switch (3.1) adopts to touch button; Described prominent point (6.1) adopts prominent point of fixing column or the spacing prominent point of rotation.
3. by the described checkout gear of claim 1, it is characterized in that described initial condition input circuit (4.1) comprises a high level Vi, diode D4.1, filter capacitor C4.11, pull down resistor R4.11 and the R4.12 of input.
4. by the described checkout gear of claim 3, it is characterized in that described high level Vi is the direct impulse signal.
5. by the described checkout gear of claim 1, it is characterized in that cover detects output circuit (4.3) and includes diode D4.3, pull down resistor R4.31 and R4.32 and filter capacitor C4.3.
6. by the described checkout gear of claim 1, it is characterized in that this device also comprises battery low-voltage comparison circuit (5), it is provided with integrated circuit (5.2), and is connected with rechargeable battery (2), and its output is established and detected the caution port.
7. by claim 1 or 6 described checkout gears, it is characterized in that this device also comprises: the voltage that links to each other with external direct current power supply Vcc switches and battery charger (1), and is charged to rechargeable battery (2) by it; Whole apparatus lid opening detecting device is by rechargeable battery (2) or external power supply power supply.
8. by the described checkout gear of claim 7, it is characterized in that being provided with current-limiting resistance R1.1 and diode D1 in voltage switching and the battery charger (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036772 CN2857185Y (en) | 2005-12-31 | 2005-12-31 | Opening detector of machine cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036772 CN2857185Y (en) | 2005-12-31 | 2005-12-31 | Opening detector of machine cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2857185Y true CN2857185Y (en) | 2007-01-10 |
Family
ID=37600489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520036772 Expired - Fee Related CN2857185Y (en) | 2005-12-31 | 2005-12-31 | Opening detector of machine cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2857185Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392781C (en) * | 2005-12-31 | 2008-06-04 | 四川道亨计算机软件有限责任公司 | Apparatus lid opening detecting device and detecting method |
| CN105403825A (en) * | 2015-12-31 | 2016-03-16 | 福建联迪商用设备有限公司 | Rechargeable battery circuit intelligent test management system and method thereof |
-
2005
- 2005-12-31 CN CN 200520036772 patent/CN2857185Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392781C (en) * | 2005-12-31 | 2008-06-04 | 四川道亨计算机软件有限责任公司 | Apparatus lid opening detecting device and detecting method |
| CN105403825A (en) * | 2015-12-31 | 2016-03-16 | 福建联迪商用设备有限公司 | Rechargeable battery circuit intelligent test management system and method thereof |
| CN105403825B (en) * | 2015-12-31 | 2018-04-10 | 福建联迪商用设备有限公司 | A kind of rechargeable battery charging circuit intelligence test management system and its method |
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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 |