CN204296468U - A kind of forklift seat protection delayer - Google Patents
A kind of forklift seat protection delayer Download PDFInfo
- Publication number
- CN204296468U CN204296468U CN201420688826.7U CN201420688826U CN204296468U CN 204296468 U CN204296468 U CN 204296468U CN 201420688826 U CN201420688826 U CN 201420688826U CN 204296468 U CN204296468 U CN 204296468U
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- resistance
- diode
- triode
- electric capacity
- seat
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- Expired - Fee Related
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Abstract
The utility model relates to forklift seat protection delayer, its seat switch signal socket and diode D1 are connected with resistance R1's, diode D1 is connected with Zener diode ZD1, Zener diode ZD1 is connected with electric capacity C1 with resistance R2, resistance R2 is connected with resistance R3 with triode Q1, resistance R1, electric capacity C1 is connected with ground connection socket with resistance R3 and triode Q1, storage battery signal socket is connected with diode D2, diode D2 and resistance R4, triode Q2 is connected with electric capacity C2, resistance R4 is connected with resistance R5, and triode Q2 is connected between resistance R4 and resistance R5, resistance R5 is connected with triode Q1, triode Q2 and diode D3 are connected with resistance R6 and they are all connected with output, electric capacity C2's, resistance R6 is also connected with ground connection socket with diode D3.Whether it also controls the bulk supply of fork truck on seat by detecting driver, and then plays a protective role, and tries to avert accidents.
Description
Technical field
The utility model belongs to fork truck technical field, relates to a kind of forklift seat protective device, particularly relates to a kind of forklift seat protection delayer.
Background technology
Fork truck in use, needs to judge that fork truck is the need of working on.At present, on fork truck, major part uses the generator operation by detecting fork truck whether to judge that fork truck is the need of working on.But this mode is intelligent not, and general setup times is longer, causes very large waste.Meanwhile, after driver leaves seat, if forget closedown generator, in this case, fork truck also can work on, and can cause unnecessary loss, even there will be serious accident.Therefore, at present about judging that fork truck has been difficult to meet the requirement of fork truck the need of the device worked on.
Summary of the invention
The purpose of this utility model is the defect in order to make up prior art; there is provided a kind of forklift seat protection delayer, whether it also controls the bulk supply of fork truck on seat by detecting driver, thus plays a protective role; Loss reducing, and try to avert accidents.
For this reason, the utility model provides following technical scheme: a kind of forklift seat protection delayer, it comprises output, seat switch signal socket, storage battery signal socket and ground connection socket, wherein, described seat switch signal socket is connected with one end of resistance R1 with the positive pole of diode D1, the negative pole of described diode D1 is connected with the positive pole of Zener diode ZD1, the negative pole of described Zener diode ZD1 is connected with one end of electric capacity C1 with resistance R2, the other end of resistance R2 is connected with one end of resistance R3 with the base stage of triode Q1, described resistance R1, electric capacity C1 is connected with described ground connection socket with the other end of resistance R3 and the emitter stage of described triode Q1, described storage battery signal socket is connected with the positive pole of diode D2, the negative pole of described diode D2 and one end of resistance R4, the emitter stage of triode Q2 is connected with one end of electric capacity C2, the other end of described resistance R4 is connected with one end of resistance R5, and the base stage of described triode Q2 is connected between described resistance R4 and resistance R5, the other end of described resistance R5 is connected with the colelctor electrode of described triode Q1, the colelctor electrode of described triode Q2 and the negative pole of diode D3 are connected with one end of resistance R6 and they are all connected with described output, the other end of described electric capacity C2, the other end of resistance R6 is also all connected with described ground connection socket with the positive pole of diode D3.
Forklift seat protection delayer described in the utility model can detect driver with or without leaving seat; if driver does not leave seat; then fork truck electrical function can normally work; if driver leaves seat; then setting time (as 5 seconds) afterwards fork truck power supply be closed, quit work, prevent driver not in driver's cabin fork truck still work; reduce unnecessary loss, the more important thing is and avoid occurring accident.
Accompanying drawing explanation
Fig. 1 is the outward appearance front view of forklift seat protection delayer of the present utility model.
Fig. 2 is the outside side view of forklift seat protection delayer of the present utility model.
Fig. 3 is the internal circuit connection diagram of forklift seat protection delayer of the present utility model.
Detailed description of the invention
Describe detailed description of the invention of the present utility model in detail below in conjunction with accompanying drawing, the content of detailed description of the invention is not as the restriction to protection content of the present utility model.
The utility model relates to a kind of forklift seat protection delayer; it is by the on state characteristic of Zener diode reverse-conducting, RC charging and discharging circuit and triode; realize the effect being controlled car load power supply by seat switch, thus reduce unnecessary loss and avoid occurring accident.
Fig. 1 shows the outward appearance front view of forklift seat protection delayer of the present utility model.Fig. 2 shows the outside side view of forklift seat protection delayer of the present utility model.As shown in Figure 1, described forklift seat protection delayer comprises output 1, seat switch signal socket 2, storage battery signal socket 3 and ground connection socket 4.Wherein, described seat switch signal socket 2 is connected with the seat switch on the driver's chair being positioned at driving cabin, for the seat switch signal that received block bit switch passes over.Described storage battery signal socket 3 is connected with the storage battery of fork truck, for receiving the storage battery signal that storage battery passes over.Described ground connection socket 4 is for ground connection.Described output 1, as the power output end of fork truck, controls the power supply of whole fork truck.The outward appearance of forklift seat protection delayer of the present utility model can be found out from Fig. 1 and Fig. 2.Certainly; the outward appearance of forklift seat protection delayer of the present utility model is not limited to the shape shown in Fig. 1 and Fig. 2; it also can be other shape; as long as it has output 1, seat switch signal socket 2, storage battery signal socket 3 and ground connection socket 4, and its inside is easy to install following internal circuit.
Fig. 3 shows the internal circuit connection diagram of forklift seat protection delayer of the present utility model.As shown in Figure 3, described seat switch signal socket 2 is connected with one end of resistance R1 with the positive pole of diode D1.The negative pole of described diode D1 is connected with the positive pole of Zener diode ZD1.The negative pole of described Zener diode ZD1 is connected with one end of electric capacity C1 with resistance R2, and one end of described resistance R2 is also connected with one end of described electric capacity C1.The other end of described resistance R2 is connected with one end of resistance R3 with the base stage of triode Q1.Described triode Q1 is NPN triode.The other end of described resistance R1, the other end of electric capacity C1 are all connected with described ground connection socket 4 with the other end of resistance R3 and the emitter stage of described triode Q1.Described storage battery signal socket 3 is connected with the positive pole of diode D2.The negative pole of described diode D2 is connected with one end of electric capacity C2 with the emitter stage of one end of resistance R4, triode Q2.Described triode Q2 is PNP triode.The other end of described resistance R4 is connected with one end of resistance R5, and the base stage of described triode Q2 is connected between described resistance R4 and resistance R5.The other end of described resistance R5 is connected with the colelctor electrode of described triode Q1.The colelctor electrode of described triode Q2 and the negative pole of diode D3 are connected with one end of resistance R6 and they are all connected with described output 1.The other end of described electric capacity C2, the other end of resistance R6 are also all connected with described ground connection socket 4 with the positive pole of diode D3.
In use, storage battery signal is normally closed power supply, directly for DC24V electricity.Seat switch outside is also connect DC24V power supply.When driver sits on seat, seat switch closes, and starts, to whole circuit high level signal, to provide bias voltage, make it conducting through diode D1, Zener diode ZD1, resistance R2 to triode Q1, charges to electric capacity C1 simultaneously.Now the base stage of triode Q2 is dragged down, and triode Q2 is also switched on, and storage battery signal flows to output by triode Q2, and output has voltage to export.When driver is sitting on seat always, above-mentioned duty can keep always, and namely car load power supply can normally work always.When driver leaves, seat switch disconnects, and no-voltage inputs, now electric capacity C1 starts electric discharge, owing to there being the existence of diode D1, only discharges to resistance R2, resistance R3, make triode Q1 conducting through resistance R2, repeat aforementioned turn on process, output has voltage simultaneously.Along with the electric discharge of electric capacity C1, triode Q1 base voltage declines thereupon.When dropping to below 0.7V, triode Q1 by, triode Q2 thereupon also by by, whole output Non voltage output.Resistance R1 is anti-human contact's protective resistance, and Zener diode ZD1 is low-voltage variation resistance, and when battery voltage drops to ZD1+0.7V, this equipment does not work.
Forklift seat protection delayer described in the utility model directly can reflect the timely driving condition of fork truck, fast and effeciently controls car load power supply, reduces unnecessary power consumption well, extends storage battery service life, avoids occurring driving accident.
The content of detailed description of the invention is understood for the ease of those skilled in the art and uses the utility model and describe, and does not form the restriction to the utility model protection content.Those skilled in the art, after having read content of the present utility model, can carry out suitable amendment to the utility model.Protection content of the present utility model is as the criterion with the content of claim.When not departing from flesh and blood and the protection domain of claim, the various amendments carried out the utility model, change and replacement etc. are all within protection domain of the present utility model.
Claims (1)
1. a forklift seat protection delayer, it comprises output (1), seat switch signal socket (2), storage battery signal socket (3) and ground connection socket (4), wherein, described seat switch signal socket (2) is connected with one end of resistance R1 with the positive pole of diode D1, the negative pole of described diode D1 is connected with the positive pole of Zener diode ZD1, the negative pole of described Zener diode ZD1 is connected with one end of electric capacity C1 with one end of resistance R2, the other end of resistance R2 is connected with one end of resistance R3 with the base stage of triode Q1, described resistance R1, electric capacity C1 is connected with described ground connection socket (4) with the other end of resistance R3 and the emitter stage of described triode Q1, described storage battery signal socket (3) is connected with the positive pole of diode D2, the negative pole of described diode D2 and one end of resistance R4, the emitter stage of triode Q2 is connected with one end of electric capacity C2, the other end of described resistance R4 is connected with one end of resistance R5, and the base stage of described triode Q2 is connected between described resistance R4 and resistance R5, the other end of described resistance R5 is connected with the colelctor electrode of described triode Q1, the colelctor electrode of described triode Q2 and the negative pole of diode D3 are connected with one end of resistance R6 and they are all connected with described output (1), the other end of described electric capacity C2, the other end of resistance R6 and the positive pole of diode D3 are also all connected with described ground connection socket (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688826.7U CN204296468U (en) | 2014-11-18 | 2014-11-18 | A kind of forklift seat protection delayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688826.7U CN204296468U (en) | 2014-11-18 | 2014-11-18 | A kind of forklift seat protection delayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204296468U true CN204296468U (en) | 2015-04-29 |
Family
ID=53102040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420688826.7U Expired - Fee Related CN204296468U (en) | 2014-11-18 | 2014-11-18 | A kind of forklift seat protection delayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204296468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865071A (en) * | 2020-07-03 | 2020-10-30 | 纳瓦电子（上海）有限公司 | Step-down DC conversion circuit structure |
-
2014
- 2014-11-18 CN CN201420688826.7U patent/CN204296468U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865071A (en) * | 2020-07-03 | 2020-10-30 | 纳瓦电子（上海）有限公司 | Step-down DC conversion circuit structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20161118 |