CN209199839U - A kind of hand of band touching water conservation circuit pinches switch - Google Patents
A kind of hand of band touching water conservation circuit pinches switch Download PDFInfo
- Publication number
- CN209199839U CN209199839U CN201920019308.9U CN201920019308U CN209199839U CN 209199839 U CN209199839 U CN 209199839U CN 201920019308 U CN201920019308 U CN 201920019308U CN 209199839 U CN209199839 U CN 209199839U
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- China
- Prior art keywords
- circuit
- triode
- circuit board
- touching water
- induction part
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Abstract
The utility model discloses a kind of hands of band of field of switches touching water conservation circuit to pinch switch; two pieces of circuit boards up and down including being bolted into V-type; touching water detection pad wherein is welded on the circuit board of upside and is connected to the load pad of load, and touching water detection pad is disposed over the top surface of circuit board；Upper circuit board is equipped with detection control circuit, loads pad and detection control circuit passes through marine glue and is hermetically encapsulated in circuit board surface；Control circuit is detected by magnetic induction part as switch contact and magnetic induction part is arranged on the opposite side of upper and lower two pieces of circuit boards；Correspond to magnetic induction part on the side of circuit board is welded with magnetic piece to the circuit board of downside relatively above.The problem of the utility model can prevent human body from generating Danger Electric shock risk, improve the security performance that hand pinches switch, make conducting inside magnetic induction part using the changes of magnetic field between magnetic induction part and magnetic piece, avoid the easy poor contact in traditional switch contact.
Description
Technical field
The utility model relates to field of switches, and in particular to a kind of hand of band touching water conservation circuit pinches switch.
Background technique
It is frequently used for using with inverter, load connection currently, hand pinches switch, switch control inverter is pinched by hand and is powered
And then make load play a role, still, existing hand pinch switch do not have touching water conservation function, when on hand have water stain or hand pinch
Switch is when falling into water, be easy to make hand pinches switch conduction and people itself becomes conductor and causes to get an electric shock, have it is greatly dangerous, and
And traditional hand pinches switch mostly by exposed aerial hardware as switch contact, when in use, especially frequently contacts water
Stain or when being stained with spot, cannot proceed normally use at the problems such as being easy to produce oxidation or poor contact on contact.
Utility model content
The technical issues of solution
For the problems in existing background, the hand that the utility model provides a kind of band touching water conservation circuit pinches switch.
Technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs:
A kind of hand of band touching water conservation circuit pinches switch, two pieces of circuit boards up and down including being bolted into V-type,
It is welded with touching water detection pad on middle upside circuit board and is connected to the load pad of load, the touching water detection pad setting
The top surface of the circuit board above；The top circuit board is equipped with detection control circuit, the load pad and institute
Detection control circuit is stated to pass through marine glue and be hermetically encapsulated in the circuit board surface；The detection control circuit passes through magnetic induction
Element is as switch contact and the magnetic induction part is arranged on the opposite side of upper and lower two pieces of circuit boards；The institute of downside
Stating circuit board, corresponding to the magnetic induction part on the side of circuit board is welded with magnetic piece relatively above.
Further, the detection control circuit includes passing through low pressure drop diode D1, low pressure drop diode D2, low pressure
The reverse-connection preventing circuit that diode D3, low pressure drop diode D4 are constituted, the side of the reverse-connection preventing circuit and the load pad drop
The in parallel and other side is parallel with filter capacitor C1 and touching water detection circuit.
Further, the touching water detection circuit includes triode Q1, triode Q2, the base stage of the triode Q1 with
The collector of the triode Q2 connects, and the emitter of the triode Q1 and triode Q2 are grounded, the collector of triode Q1
Power on, the magnetic induction part is connected with current-limiting resistance R2 and the magnetic induction part and current-limiting resistance R2 are connected in parallel on three poles
The both ends of pipe Q1 collector and base stage, are parallel with biasing resistor R1 between the base stage and emitter of the triode Q1, and described three
Be parallel with biasing resistor R3 between the base stage and emitter of pole pipe Q2, touching water detection pad be connected in parallel on the collector of triode Q1 with
Between the base stage of triode Q2, and touches and be in series with current-limiting resistance R4 between water detection pad and triode Q2 base stage.
Further, the magnetic induction part is tongue tube.
Beneficial effect
It is had the following beneficial effects: compared with known publicly-owned technology using technical solution provided by the utility model
The present apparatus can pinch setting touching water detection pad, detection control circuit on switch in hand, when on touching water detection pad
It when water stain in contamination, detect the touching water detection circuit inside control circuit and is connected to form short-circuit loop, do not make to load operation, prevent
Human body generates Danger Electric shock risk, improves the security performance that hand pinches switch；Meanwhile hand is set by magnetic induction part and pinches opening for switch
Contact is closed, makes conducting inside magnetic induction part using the changes of magnetic field between magnetic induction part and magnetic piece, avoids traditional
The problem of switch contact easy poor contact.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of two pieces of circuit board phase exterior surfaces of the utility model or more；
Fig. 2 is the schematic diagram of two pieces of circuit board opposite inner faces of the utility model or more；
Fig. 3 is the side structure schematic diagram of the utility model；
Fig. 4 is the detection control circuit schematic diagram of the utility model；
Label in figure respectively represents: 1- bolt；2- nut；3- touches water and detects pad；4- loads pad；5- circuit board；
6- magnetic piece；7- magnetic induction part.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, it is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Below with reference to embodiment, the utility model will be further described.
Embodiment 1, in conjunction with Fig. 1-3: a kind of hand of band touching water conservation circuit pinches switch, including passes through bolt 1 and be fixed into V-type
Two pieces of circuit boards 5 up and down, circuit board 5 have certain elasticity, wherein upside circuit board 5 on be welded with touching water detection pad 3
And it is connected to the load pad 4 of load, touching water detection pad 3 is disposed over the top surface of circuit board 5；Upper circuit board
5 are equipped with detection control circuit, load pad 4 and detection control circuit passes through marine glue and is hermetically encapsulated in 5 surface of circuit board；
Control circuit is detected in welding, conducting wire should be passed through from circuit board 5, to prevent from breaking line.Detection control circuit passes through magnetic strength
It answers element 7 as switch contact and magnetic induction part 7 is arranged on the opposite side of upper and lower two pieces of circuit boards 5；The circuit of downside
Plate 5 corresponds to magnetic induction part 7 on the side of circuit board 5 relatively above and is welded with magnetic piece 6, and touching water detection pad 3 and load are welded
The pad that disk 4 is separated by by two forms.
When pressing hand and pinching switch, 5 end of upper and lower two pieces of circuit boards is touched, and magnetic piece 6 and magnetic induction part 7 are close or connect
Touching, magnetic induction part 7 are connected, and detection control circuit conducting makes to load energization operation.Circuit board 5 is decontroled, circuit board 5 is sprung back, magnetic
Sensing element 7 disconnects, and detection control circuit disconnects circuit, and load stops operation.
Further, in conjunction with Fig. 4, detecting control circuit includes by low pressure drop diode D1, low pressure drop diode D2, low
The reverse-connection preventing circuit that pressure drop diode D3, low pressure drop diode D4 are constituted, the side of reverse-connection preventing circuit it is in parallel with pad 4 is loaded and
The other side is parallel with filter capacitor C1 and touching water detection circuit.
Touching water detection circuit includes triode Q1, triode Q2, and the base stage of triode Q1 and the collector of triode Q2 connect
It connects, the emitter of triode Q1 and triode Q2 are grounded, and the collector of triode Q1 powers on, magnetic induction part 7 and current limliting
Resistance R2 series connection and magnetic induction part 7 and current-limiting resistance R2 are connected in parallel on the both ends of triode Q1 collector and base stage, triode Q1
Base stage and emitter between be parallel with biasing resistor R1, be parallel with biasing resistor between the base stage and emitter of triode Q2
R3, touching water detection pad 3 be connected in parallel between the collector of triode Q1 and the base stage of triode Q2, and touch water detection pad 3 with
Current-limiting resistance R4 is in series between triode Q2 base stage.
When user is infected with water stain on hand, touching water detection pad 3 touches water stain conducting, triode Q1 conducting, by three
Pole pipe Q2 base stage shorted to earth ends triode Q2, at this point, pressing magnetic induction part 7, triode Q1 is also not turned on, and load is not
Operation, removal touching water detection pad 3 on it is water stain after, load restoration work normally.
Magnetic induction part 7 is tongue tube, and when tongue tube is close to magnetic piece 6, the hard contact inside tongue tube is in magnetism
It is closed under the magnetic fields of piece 6, makes reed switch conduction, filter capacitor C1 plays filter action, three poles in detection control circuit
Pipe Q1 forms switching circuit with magnetic induction part 7, current-limiting resistance R2, biasing resistor R1 in touching water detection circuit, realizes small electricity
Flow control high current can extend the tongue tube service life.
The resistance value of current-limiting resistance R2 should not select too small, and otherwise, after touching water, even if triode Q2 is connected, electric current still can
Current-limiting resistance R2 is flowed to from tongue tube, triode Q2, current-limiting resistance R2 is formed into a loop over the ground, does not have overboard protective effect.
Triode Q2, current-limiting resistance R4, biasing resistor R3, the touching water detection composition touching water conservation circuit of pad 3.
The present apparatus can pinch setting touching water detection pad 3, detection control circuit on switch in hand, when touching water detects pad 3
It when water stain in upper contamination, detect the touching water detection circuit inside control circuit and is connected to form short-circuit loop, do not make to load operation, prevent
Only human body generates Danger Electric shock risk, improves the security performance that hand pinches switch；Meanwhile hand is set by magnetic induction part 7 and pinches switch
Switch contact, make to be connected inside magnetic induction part 7 using the changes of magnetic field between magnetic induction part 7 and magnetic piece 6, avoid
The problem of traditional switch contact easy poor contact.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, does not limit the specific embodiment of the utility model yet.Obviously, according in this specification
Hold, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably explain this reality
With novel principle and practical application, so that skilled artisan be enable to better understand and utilize this practical new
Type.The utility model is limited only by the claims and their full scope and equivalents.
Claims (4)
1. a kind of hand of band touching water conservation circuit pinches switch, it is characterised in that: including being fixed into the upper and lower of V-type by bolt (1)
Two pieces of circuit boards (5), wherein being welded with touching water detection pad (3) on upside circuit board (5) and being connected to the load weldering of load
Disk (4), touching water detection pad (3) are disposed over the top surface of the circuit board (5)；The top circuit board (5)
It is equipped with detection control circuit, the load pad (4) and the detection control circuit pass through marine glue and be hermetically encapsulated in institute
State circuit board (5) surface；The detection control circuit is used as switch contact and the magnetic induction part by magnetic induction part (7)
(7) it is arranged on the opposite side of the upper and lower two pieces circuit boards (5)；The circuit board (5) of downside circuit board relatively above
(5) magnetic induction part (7) is corresponded on side is welded with magnetic piece (6).
2. a kind of hand of band touching water conservation circuit according to claim 1 pinches switch, it is characterised in that: the detection control
Circuit includes being made up of low pressure drop diode D1, low pressure drop diode D2, low pressure drop diode D3, low pressure drop diode D4
Reverse-connection preventing circuit, the side of the reverse-connection preventing circuit is in parallel with load pad (4) and the other side is parallel with filter capacitor C1
And touching water detection circuit.
3. a kind of hand of band touching water conservation circuit according to claim 2 pinches switch, it is characterised in that: the touching water detection
Circuit includes triode Q1, triode Q2, and the base stage of the triode Q1 is connect with the collector of the triode Q2, and described three
The emitter of pole pipe Q1 and triode Q2 is grounded, and the collector of triode Q1 powers on, the magnetic induction part (7) and current limliting
Resistance R2 series connection and the magnetic induction part (7) and current-limiting resistance R2 are connected in parallel on the both ends of triode Q1 collector and base stage, institute
It states and is parallel with biasing resistor R1 between the base stage and emitter of triode Q1, between the base stage and emitter of the triode Q2 simultaneously
It is associated with biasing resistor R3, touching water detection pad (3) is connected in parallel between the collector of triode Q1 and the base stage of triode Q2, and is touched
Current-limiting resistance R4 is in series between water detection pad (3) and triode Q2 base stage.
4. a kind of hand of band touching water conservation circuit according to claim 1 or 3 pinches switch, it is characterised in that: the magnetic strength
Answering element (7) is tongue tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920019308.9U CN209199839U (en) | 2019-01-07 | 2019-01-07 | A kind of hand of band touching water conservation circuit pinches switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920019308.9U CN209199839U (en) | 2019-01-07 | 2019-01-07 | A kind of hand of band touching water conservation circuit pinches switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209199839U true CN209199839U (en) | 2019-08-02 |
Family
ID=67431016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920019308.9U Expired - Fee Related CN209199839U (en) | 2019-01-07 | 2019-01-07 | A kind of hand of band touching water conservation circuit pinches switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209199839U (en) |
-
2019
- 2019-01-07 CN CN201920019308.9U patent/CN209199839U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190802 Termination date: 20220107 |