CN107161494A - A kind of side proof mechanism of water of flexible material - Google Patents
A kind of side proof mechanism of water of flexible material Download PDFInfo
- Publication number
- CN107161494A CN107161494A CN201710579382.1A CN201710579382A CN107161494A CN 107161494 A CN107161494 A CN 107161494A CN 201710579382 A CN201710579382 A CN 201710579382A CN 107161494 A CN107161494 A CN 107161494A
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- Prior art keywords
- water
- flexible material
- enclosed mechanism
- surface layer
- enclosed
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D27/00—Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
- B65D27/12—Closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D27/00—Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D27/00—Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
- B65D27/005—Linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D27/00—Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
- B65D27/12—Closures
- B65D27/20—Closures using self-locking integral or attached elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toys (AREA)
Abstract
The invention discloses a kind of side proof mechanism of water of flexible material, including bottom (44), surface layer (43) and enclosed mechanism;The both sides sealing of bottom and surface layer, provided with an outward opening between bottom and surface layer;The Part I of enclosed mechanism is arranged on the outside of surface layer, and Part II is arranged on the inner side of bottom;After the outward opening end reflexed of bottom and surface layer, the Part I and Part II of enclosed mechanism merge to seal described outward opening, in the fold-type gluing, sealing portion of described invagination formation bottom and outer layer, waterproof action is played by described fold-type gluing, sealing portion.The side proof mechanism of water of this flexible material uses fold-type proof mechanism of water, good water-proof effect.
Description
Technical field
The present invention relates to a kind of side proof mechanism of water of flexible material.
Background technology
Needed to use during orienteering competition and training in map, and specific process usually because raining or in tide
In wet environment, map is often damaged.In addition, it is necessary to carry some files when performing field work, it may have waterproof will
Ask.
It is still still easy at opening or at slide fastener although the documents pouch of existing plastics is with certain water proofing property
Water inlet so that map or file make moist or damaged.
Therefore, it is necessary to design a kind of new side proof mechanism of water.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of side proof mechanism of water of flexible material, this flexible material
Side proof mechanism of water good water-proof effect.
The technical solution of invention is as follows:
A kind of side proof mechanism of water of flexible material, including bottom, surface layer and enclosed mechanism;The both sides of bottom and surface layer are close
Envelope, provided with an outward opening between bottom and surface layer;
The Part I of enclosed mechanism is arranged on the outside of surface layer, and Part II is arranged on the inner side of bottom;Bottom and surface layer
Outward opening end reflexed after, the Part I and Part II of enclosed mechanism merge to seal described outward opening, in institute
The invagination formation bottom stated and the fold-type gluing, sealing portion of outer layer, waterproof is played by described fold-type gluing, sealing portion
Effect.The invayination of reflexed formation plays waterproof action jointly with described enclosed mechanism.
The length of bottom is more than the length of surface layer, and one section grown is used as a butt strip, second of the enclosed mechanism
Divide and be located on butt strip.One section grown also turns into the section that staggers, and the effect of offset ends is easy for enclosed mechanism and preferably fitted.
Described enclosed mechanism is that by buckle mechanism, the Part I of enclosed mechanism is the box of snap-fastener, the of enclosed mechanism
Two parts are the pin thread of snap-fastener;Snap-fastener is at least one.It is preferred that 2-4, it is 2 in embodiment 1.
Described enclosed mechanism is magnetic mechanism;The Part I of enclosed mechanism is magnetic part, the second of enclosed mechanism
Part is irony adsorption element.Magnetic part is magnetic blow out coating, and magnetic sheet, irony adsorption element is iron powder layer, iron plate.
Described enclosed mechanism is velcro;The Part I of enclosed mechanism is velcro batt, enclosed mechanism
Part II is that velcro pierces layer.
Described enclosed mechanism is slide fastener;The Part I of enclosed mechanism is the first single-stranded, Part II of enclosed mechanism
Single-stranded for second, slide fastener also includes slider of zipper fastener.
Bucker is provided with surface layer, bucker is set at the Part I of decoration enclosed mechanism;
The outside (downside) of bottom is provided with outer enhancement layer.
The outside (upside) of surface layer is provided with interior enhancement layer.
Side proof mechanism of water is arranged at the opening of waterproof bag.
As application, this proof mechanism of water is arranged on bag;
A kind of waterproof bag with fold-type mechanism, including bag;Described bag includes bag upper strata and bag
Body lower floor;Bag has an open side, and fold-type proof mechanism of water is provided with described open side;Described is anti-
Folding proof mechanism of water includes bottom, surface layer and enclosed mechanism;The both sides sealing of bottom and surface layer, is provided with one between bottom and surface layer
Individual outward opening;
The Part I of enclosed mechanism is arranged on the outside of surface layer, and Part II is arranged on the inner side of bottom;Bottom and surface layer
Outward opening end reflexed after, the Part I and Part II of enclosed mechanism merge to seal described outward opening, in institute
The invagination formation bottom stated and the fold-type gluing, sealing portion of outer layer, waterproof is played by described fold-type gluing, sealing portion
Effect.The invayination of reflexed formation plays waterproof action jointly with described enclosed mechanism.
Bag is provided with handle.
Sealing strip is provided with bag;Sealing strip includes being arranged on the fin on the inside of bag lower floor and is arranged in bag upper strata
The groove being adapted to the fin of side.
Bag lower floor is provided with reinforcing plate.
The outer surface on bag lower floor or upper strata is provided with coating.It can be write with pen on coating, increase writing damping;
Pen is also connected with by rope band on bag;Handle is provided with the jack for being used for inserting pen.Provided with electricity in described pen
Pond, the front end of pen is nib, and the connecting portion of the main body of nib and pen is provided with multiple LEDs;The main part of pen, which is provided with, to be used to control
The switch of LED opening and closing.
Temperature Humidity Sensor, energy-storage module, MCU, A/D converter, display screen and alarm are provided with bag;Energy-storage module
Powered for MCU;
Temperature Humidity Sensor is connected by A/D converter with MCU, and Temperature Humidity Sensor is 4, is arranged at 4 angles;Bag
Body is square bag;
Display screen and alarm are connected with MCU;Alarm is light emitting diode, if humidity exceedes predetermined value, is lighted
Diode flicker alarm.MCU detects humidity by Temperature Humidity Sensor and is by related drive circuit driving diode
Existing mature technology.
Energy-storage module is lithium battery;Be additionally provided with bag for the constant-current charging circuit for lithium cell charging and for for
The charging inlet (preferably Micro USB interfaces) of lithium cell charging.
In bag circuit is adjusted provided with display backlight;Bag is provided with button, and button is at least one;Button and MCU
It is connected, is lighted for control display screen and brightness regulation.
Bag is made of transparent flexible material, and bag is square bag.It can be used as documents pouch, transparent flexible material
Expect for PP, PVC transparent material (common used material for making transparent document pouch) and polyethylene film etc..
Bag lower floor is provided with reinforcing plate.It provided with reinforcing plate, can ensure that map deploys, and be easy to write on map set
Word;During without reinforcing plate, facilitate map folding, it is each advantageous.
The outer surface of bag lower floor is provided with coating;Pen is also connected with by rope band on bag.Coating is erasable coating,
Therefore, it can be write on coating equivalent to pen.So as to be write equivalent on map.
Handle is provided with the jack for being used for inserting pen;Battery is provided with described pen, the front end of pen is nib, nib and pen
Main body connecting portion be provided with multiple LEDs;LED is 4, is circumferentially circular layout;The main part of pen, which is provided with, to be used to control LED
The switch of lamp opening and closing.
Temperature Humidity Sensor, MCU, A/D converter, display screen and alarm are provided with bag;
Temperature Humidity Sensor is connected by A/D converter with MCU, and Temperature Humidity Sensor is 4, is arranged at 4 angles;Bag
Body is square bag;
Display screen and alarm are connected with MCU;Alarm is light emitting diode, if humidity exceedes predetermined value, is lighted
Diode flicker alarm.MCU detects humidity by Temperature Humidity Sensor and is by related drive circuit driving diode
Existing mature technology.
LED can provide illumination in dim environment, and practicality is good.
In addition, (1) is provided with least one sealant in kink, sealant is located at the medial surface of outer layer and/or internal layer, position
Between outer layer and internal layer.Sealant can strengthen sealing, can be spongy layer or soft plastic layer or
Rubber layer.Sealant can also play a part of inner reinforcing layer.
(2) in order to fix snap-fastener or magnetic mechanism, pad 41 is provided with surface layer and bottom;Increase during the effect of pad
Power, it is to avoid damage surface layer or bottom.
(3) sealing strip, is used as the second resealing mechanism.
Sealing strip include be arranged on the fin 18 on the inside of bag lower floor and be arranged on the inside of bag upper strata with the fin
The groove 19 of adaptation;The cross section of fin is triangle or rectangle.
(4) flexible material is flexible plastic.
(5) interior enhancement layer, which is provided with, helps folding groove (50);Have and help folding groove, during reflexed, groove reflexed can be rolled over easily placed along helping,
And folding line is straight, so that sealing effectiveness is more preferably.Folding groove is helped to use V-shaped groove or semi-circular groove.
Beneficial effect:
The side proof mechanism of water of the flexible material of the present invention, has the characteristics that:
(1) fold-type water proof structure is used, structure is novel, is skillfully constructed, good water-proof effect.
(2) outside water retaining cover can be to carrying out waterproof (at enclosed mechanism) at opening.
(3) the second heavy waterproof is carried out using sealing strip.
(4) further triple waterproofs can be carried out using humidity sensor and alarm.
(5) when applying on map, map set supports writing;The present invention devises pen and coating, and coating is wiped off with pen,
Write equivalent on map.Coating layer thickness control can guarantee that more than 80% transparency, and have coating in presence, with oil
Property pen writing when, have certain friction, write more smooth.And pen connects map set by rope band, it is not easy to lose, more enter one
There is step, handle jack can accommodate pen, and practicality is good.And with handle, be easy to carry map or file etc., it is fixed to be particularly suitable for
To cross country race and training program (such as loading file or map).
In a word, the side proof mechanism of water good water-proof effect of flexible material of the invention, feature-rich.
Brief description of the drawings
Fig. 1 is the deployed configuration schematic diagram (front view) of the side proof mechanism of water of the flexible material based on snap arrangement;
Fig. 2 is the deployed configuration schematic diagram (side view) of the side proof mechanism of water of the flexible material based on snap arrangement;
Fig. 3 is the structural representation (side view after the reflexed of the side proof mechanism of water of the flexible material based on snap arrangement
Figure);
Fig. 4 is the deployed configuration schematic diagram (front view) of the side proof mechanism of water of the flexible material based on magnetic mechanism;
Fig. 5 is the deployed configuration schematic diagram (side view) of the side proof mechanism of water of the flexible material based on magnetic mechanism;
Fig. 6 is the structural representation (side view after the reflexed of the side proof mechanism of water of the flexible material based on magnetic mechanism
Figure);
Fig. 7 (faces for the deployed configuration schematic diagram of the side proof mechanism of water of the flexible material based on velcro structure
Figure);
Fig. 8 is the deployed configuration schematic diagram (side view of the side proof mechanism of water of the flexible material based on velcro structure
Figure);
Fig. 9 is the structural representation (side after the reflexed of the side proof mechanism of water of the flexible material based on velcro structure
View);
Figure 10 is the deployed configuration schematic diagram (front view) of the side proof mechanism of water of the flexible material based on zipper;
Figure 11 is the deployed configuration schematic diagram (side view) of the side proof mechanism of water of the flexible material based on zipper;
Figure 12 is the structural representation (side view after the reflexed of the side proof mechanism of water of the flexible material based on zipper
Figure);
Figure 13 is the general structure schematic diagram (front view) of waterproof bag;
Figure 14 is the general structure schematic diagram (side view) of waterproof bag;
Figure 15 is the structural representation of pen;
Figure 16 is dust humidity detection system block diagram;
Figure 17 is that backlight adjusts schematic diagram;
Figure 18 is constant-current charge schematic diagram;
Figure 19 is constant-current charge schematic diagram.
Label declaration:1- bags, 2- handles, 3-;
11- display screens, 12- sealing strips, 13- slide fasteners, 14- bags upper strata, 15- bags lower floor, 16- coatings, 17- strengthens
Water retaining cover outside plate, 18- fins, 19- grooves, 141-, 20- proof mechanism of water.
21- jacks, 31- batteries, 32- switches, 33-LED lamps, 34- nibs.
41- boxes, 42- pin threads;Enhancement layer in 43- surface layers, 44- bottoms, 45-, the outer enhancement layers of 46-, 47- snap-fasteners;48- pads
Piece, 49- sealants, 50- helps folding groove;
51- magnetic parts, 52- irony adsorption elements, 53- magnetic mechanism, 61- velcro batts, 62- velcros thorn
Layer, 63- velcros, 71- first is single-stranded, and 72- second is single-stranded, 73- slider of zipper fasteners.
Embodiment
The present invention is described in further details below with reference to the drawings and specific embodiments:
Embodiment 1:Such as Fig. 1~3, a kind of side proof mechanism of water of flexible material, including bottom 44, surface layer 43 and sealing machine
Structure;The both sides sealing of bottom and surface layer, provided with an outward opening between bottom and surface layer;
The Part I of enclosed mechanism is arranged on the outside of surface layer, and Part II is arranged on the inner side of bottom;Bottom and surface layer
Outward opening end reflexed after, the Part I and Part II of enclosed mechanism merge to seal described outward opening, in institute
The invagination formation bottom stated and the fold-type gluing, sealing portion of outer layer, waterproof is played by described fold-type gluing, sealing portion
Effect.The invayination of reflexed formation plays waterproof action jointly with described enclosed mechanism.
The length of bottom is more than the length of surface layer, and one section grown is used as a butt strip, second of the enclosed mechanism
Divide and be located on butt strip.One section grown also turns into the section that staggers, and the effect of offset ends is easy for enclosed mechanism and preferably fitted.
Described enclosed mechanism is that, by buckle mechanism, the Part I of enclosed mechanism is the box 41 of snap-fastener, enclosed mechanism
Part II is the pin thread 42 of snap-fastener;Snap-fastener is at least one.It is preferred that 2-4, it is 2 in embodiment 1.
Bucker 141 is provided with surface layer, bucker is set at the Part I of decoration enclosed mechanism;
The outside (downside) of bottom is provided with outer enhancement layer 46.
The outside (upside) of surface layer is provided with interior enhancement layer 45.
Side proof mechanism of water is arranged at the opening of waterproof bag.
Embodiment 2:Such as Fig. 4-6;Same as Example 1, difference is, described enclosed mechanism replaces with magnetic machine
Structure;The Part I of enclosed mechanism is magnetic part 51, and the Part II of enclosed mechanism is irony adsorption element 52.Magnetic part
For magnetic blow out coating, magnetic sheet, irony adsorption element is iron powder layer, iron plate.
Embodiment 3, such as Fig. 7-9;Same as Example 1, difference is, described enclosed mechanism replaces with nylon and taken
Button;The Part I of enclosed mechanism is velcro batt 61, and the Part II of enclosed mechanism pierces layer 62 for velcro.
Embodiment 4, such as Figure 10-12;Same as Example 1, difference is, described enclosed mechanism replaces with slide fastener
13;The Part I of enclosed mechanism is first single-stranded 71, and the Part II of enclosed mechanism is second single-stranded 72, and slide fastener also includes drawing
Chain first 73.
Embodiment 5:Application example.
As application, this proof mechanism of water is arranged on bag;
Such as Figure 13-15, a kind of waterproof bag with fold-type mechanism, including bag 1;Described bag includes bag upper strata
14 and bag lower floor 15;Bag has an open side, and fold-type proof mechanism of water is provided with described open side;
Described fold-type proof mechanism of water includes bottom 44, surface layer 43 and enclosed mechanism;The both sides sealing of bottom and surface layer,
Provided with an outward opening between bottom and surface layer;
The Part I of enclosed mechanism is arranged on the outside of surface layer, and Part II is arranged on the inner side of bottom;Bottom and surface layer
Outward opening end reflexed after, the Part I and Part II of enclosed mechanism merge to seal described outward opening, in institute
The invagination formation bottom stated and the fold-type gluing, sealing portion of outer layer, waterproof is played by described fold-type gluing, sealing portion
Effect.The invayination of reflexed formation plays waterproof action jointly with described enclosed mechanism.
Bag is provided with handle 2.
Sealing strip 12 is provided with bag;Sealing strip includes the fin 18 being arranged on the inside of bag lower floor and is arranged on bag
The groove 19 being adapted to the fin on the inside of layer.
Bag lower floor is provided with reinforcing plate 17.
The outer surface on bag lower floor or upper strata is provided with coating 16.It can be write with pen on coating, increase writing damping;
Pen 3 is also connected with by rope band on bag;Handle is provided with the jack 21 for being used for inserting pen.It is provided with described pen
Battery 31, the front end of pen is nib 34, and the connecting portion of the main body of nib and pen is provided with multiple LEDs 33;The main part of pen is provided with
For the switch 32 for controlling LED to be opened and closed.
Temperature Humidity Sensor, energy-storage module, MCU, A/D converter, display screen and alarm are provided with bag;Energy-storage module
Powered for MCU;
Temperature Humidity Sensor is connected by A/D converter with MCU, and Temperature Humidity Sensor is 4, is arranged at 4 angles;Bag
Body is square bag;
Display screen and alarm are connected with MCU;Alarm is light emitting diode, if humidity exceedes predetermined value, is lighted
Diode flicker alarm.MCU detects humidity by Temperature Humidity Sensor and is by related drive circuit driving diode
Existing mature technology.
Energy-storage module is lithium battery;Be additionally provided with bag for the constant-current charging circuit for lithium cell charging and for for
The charging inlet (preferably Micro USB interfaces) of lithium cell charging.
In bag circuit is adjusted provided with display backlight;Bag is provided with button, and button is at least one;Button and MCU
It is connected, is lighted for control display screen and brightness regulation.
Bag is made of transparent flexible material, and bag is square bag.It can be used as documents pouch, transparent flexible material
Expect for PP, PVC transparent material (common used material for making transparent document pouch) and polyethylene film etc..
Display screen 11 and alarm are connected with MCU;Alarm is light emitting diode, if humidity exceedes predetermined value, is sent out
Optical diode flicker alarm.MCU detects humidity by Temperature Humidity Sensor and drives diode by related drive circuit
For existing mature technology.
Such as Figure 17, such as Fig. 6, the scanning means also includes the brightness regulating circuit for being used to adjust display backlight;Described
Brightness regulating circuit include MCU, LED string (the lamp string that is in series of multiple LEDs i.e. in annular light compensating lamp), triode,
Button;Triode is NPN type triode;Rotary switch on base or image acquiring device is coaxially connected with potentiometer Rx;
LED string includes the LED of multiple concatenations;The positive pole of LED string meets positive source Vcc;The negative pole of LED string connects
The C poles of triode, the E poles of triode are grounded through second resistance R2;The output end for meeting MCU of the B poles of triode.Positive source
Vcc is 5V, and A/D converter is 8 Bits Serial output type converters.
Button is provided with 2, and one is used for controlling switch, and control display screen is lighted or closed, and another is used to adjust brightness,
For being classified regulation brightness, brightness increase by 20% is such as often clicked, loop control, i.e., to after 100% brightness, then by once,
Then return to 20% brightness.Pass through the Duty ratio control brightness of pwm pulse.
In such as Figure 18-19, such as Figure 13-14, constant-current charging circuit, each element or label declaration:
VIN+ --- -- input power positive pole.
VIN- --- -- input power negative pole.
VOUT+ --- -- out-put supply positive pole.
VOUT- ----out-put supply negative pole.
The positive pole of VREF+ --- -- reference power source
C1 is input filter capacitor.
C2 is output filter capacitor.
C3 is current sample feedback filtering.
R1, R2, R5, C3 constitute current sample feedback line.
R3, R4, are voltage sample feedback circuit.
D1 is isolation diode.
Constant-current charging circuit includes constant pressure driving chip and current feedback circuit;
(1) voltage output end of constant pressure driving chip is the positive output end VOUT+ of constant-current charging circuit;Constant pressure driving chip
Negative output terminal ground connection;
Constant pressure driving chip is powered by DC-voltage supply end VIN+ and VIN-;
(2) current feedback circuit described in includes resistance R1, R2 and R5 and reference voltage end VREF+;
Reference voltage end VREF+ is grounded by resistance R1, R2 and the R5 being sequentially connected in series;
Resistance R5 and R2 tie point are the negative output terminal VOUT- of constant-current charging circuit;
Resistance R1 and R2 tie point meet the feedback end FB of constant pressure driving chip.
Constant-current charging circuit also includes voltage feedback circuit;
Voltage feedback circuit includes resistance R3 and R4 and diode D1;
Resistance R3 and R4 series connection are followed by between the positive output end VOUT+ and ground of constant-current charging circuit;Resistance R3's and R4
Tie point connects diode D1 anode;Diode D1 negative electrode meets the feedback end FB of constant pressure driving chip.
Operation principle explanation:
Using stable reference power supply as reference voltage, using R1, R2, R5 partial pressures obtain the voltage equal with FB, so that
Pass through the size that FB goes to adjust DCDC IC inside PWM and controls output current.For example, when output current becomes big, in sampling electricity
Voltage on resistance R5 will be raised, because VRFE+ is fixed value, so as to be that FB voltages become big, FB becomes big, and dutycycle will subtract
It is few, so as to be that output current is reduced, and a complete feedback is completed, reach the purpose of stabling current output.
Constant current is calculated:
If the voltage that R5 upstream overcurrent is produced is VIo, output current is Io
Reference voltage is VREF+=2.5V,
FB voltages are VFB=0.6V,
R5=0.1 Ω, R1=40K Ω, R2=10K Ω
Then:
VIo=Io*R5
VFB=VIo+ ((VREF+-VIo) * R2/ (R1+R2))
Calculate:
Io=(VFB* (R1+R2)-R2*VREF+)/R1*R5
The equation if K=(VFB* (R1+R2)-R2*VREF+)/R1 is taken
Io=K/R5
In terms of calculation formula, Io output currents and output voltage and input voltage do not have any relation, only and VFB.R1,
R2, VREF are relevant, and these parameters are in specific design, they be all it is fixed (VFB be in stable state it is fixed, for
Chip fp7192 constant pressure chips, its steady-state value is 0.6v), so K is necessarily a fixed value, so formula:
Io=K/R5 has the fabulous linearity, and with excellent controllability.
Parameter above being assigned the occurrence being set above can obtain:
Io=(VFB* (R1+R2)-R2*VREF+)/R1*R5
=(0.6* (40+10) -10*2.5)/40*0.1
=1.25A
It can see, this scheme introduces fixed VREF+, only taken so that Io becomes one with R5 in equation more than
The linear equation of sample resistance, makes Io become constant, so as to reach the purpose of constant current.
The characteristics of constant-current circuit in this programme, is as follows:
1. using stable fixed VREF+ voltages, it is easy to control and the stability control of precision.
2. fed back using current sample is become into electric resistance partial pressure, it is more simple and reliable.
3. applicability is wide, the circuit of any required constant current can be used.
Cost is greatly reduced, and cost is 1/3 using IC constant current schemes.
Claims (10)
1. the side proof mechanism of water of a kind of flexible material, it is characterised in that including bottom (44), surface layer (43) and enclosed mechanism;
The both sides sealing of bottom and surface layer, provided with an outward opening between bottom and surface layer;
The Part I of enclosed mechanism is arranged on the outside of surface layer, and Part II is arranged on the inner side of bottom;Bottom and surface layer it is outer
After the reflexed of openend, the Part I and Part II of enclosed mechanism merge to seal described outward opening, described
The fold-type gluing, sealing portion of invagination formation bottom and outer layer, plays waterproof by described fold-type gluing, sealing portion and makees
With.
2. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that the length of bottom is more than surface layer
Length, one section grown is as a butt strip, and the Part II of the enclosed mechanism is located on butt strip.
3. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that described enclosed mechanism be by
Buckle mechanism, the Part I of enclosed mechanism is the box (41) of snap-fastener, and the Part II of enclosed mechanism is the pin thread (42) of snap-fastener;
Snap-fastener is at least one.
4. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that described enclosed mechanism is magnetic
Inhale mechanism;The Part I of enclosed mechanism is magnetic part (51), and the Part II of enclosed mechanism is irony adsorption element (52).
5. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that described enclosed mechanism is Buddhist nun
Imperial hasp;The Part I of enclosed mechanism is velcro batt (61), and the Part II of enclosed mechanism pierces layer for velcro
(62)。
6. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that described enclosed mechanism is drawing
Chain (13);The Part I of enclosed mechanism is first single-stranded (71), and the Part II of enclosed mechanism is second single-stranded (72), slide fastener
Also include slider of zipper fastener (73).
7. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that bucker is provided with surface layer
(141), bucker is set at the Part I of decoration enclosed mechanism.
8. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that the outside (downside) of bottom is set
There is outer enhancement layer (46).
9. the side proof mechanism of water of flexible material according to claim 1, it is characterised in that the outside (upside) of surface layer is set
There is interior enhancement layer (45).
10. the side proof mechanism of water of the flexible material according to claim any one of 1-9, it is characterised in that side waterproof
Mechanism is arranged at the opening of waterproof bag.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710579382.1A CN107161494A (en) | 2017-07-16 | 2017-07-16 | A kind of side proof mechanism of water of flexible material |
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Application Number | Priority Date | Filing Date | Title |
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CN201710579382.1A CN107161494A (en) | 2017-07-16 | 2017-07-16 | A kind of side proof mechanism of water of flexible material |
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Publication Number | Publication Date |
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CN107161494A true CN107161494A (en) | 2017-09-15 |
Family
ID=59816931
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CN201710579382.1A Pending CN107161494A (en) | 2017-07-16 | 2017-07-16 | A kind of side proof mechanism of water of flexible material |
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CN (1) | CN107161494A (en) |
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CN107938579A (en) * | 2017-12-04 | 2018-04-20 | 宋仲华 | A kind of multifunctional vehicle mounted sprinkling system |
CN108031581A (en) * | 2017-12-04 | 2018-05-15 | 长沙修恒信息科技有限公司 | A kind of automatic liquid-spraying system |
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CN201040616Y (en) * | 2006-06-30 | 2008-03-26 | 大原博 | Water-proof bag structure |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107938579A (en) * | 2017-12-04 | 2018-04-20 | 宋仲华 | A kind of multifunctional vehicle mounted sprinkling system |
CN108031581A (en) * | 2017-12-04 | 2018-05-15 | 长沙修恒信息科技有限公司 | A kind of automatic liquid-spraying system |
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