CN206432096U - A kind of straight-line displacement potentiometer - Google Patents
A kind of straight-line displacement potentiometer Download PDFInfo
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- CN206432096U CN206432096U CN201720039130.5U CN201720039130U CN206432096U CN 206432096 U CN206432096 U CN 206432096U CN 201720039130 U CN201720039130 U CN 201720039130U CN 206432096 U CN206432096 U CN 206432096U
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Abstract
The utility model discloses a kind of straight-line displacement potentiometer of field of electronic devices, including magnetic screen shell, and it is fixed on the Hall sensor in the magnetic screen shell, and can be in the magnetic screen shell, along the axial direction of the magnetic screen shell, the permanent magnetic part of horizontal linear displacement is carried out, in the magnetic screen shell, the Hall sensor and the permanent magnetic part are staggered floor arrangements, and the output signal of the Hall sensor is exported by wire.It has the technical effect that：First avoids the precision caused by the abrasion between brush and resistive element from changing, extend the working life of straight-line displacement potentiometer, second, when the output signal of Hall sensor is linear signal, it has than the more preferable linear precision of traditional line floatingpotential device, 3rd, the output of a variety of output signals can be carried out.
Description
Technical field
The utility model is related to a kind of straight-line displacement potentiometer of field of electronic devices.
Background technology
At present, traditional straight-line displacement potentiometer is brush contact working method, and building block includes：Resistive element, slip
Brush, axle, shell.Supply voltage is carried in resistive element two ends by terminals, and brush is slided above detects and export electricity
The voltage of position is brushed, is the mode directly contacted.There are several intrinsic defects in it：First, brush is sliding on resistive element
It is dynamic to cause its limited lifetime with the presence of friction, simultaneously because abrasion, precision can also be changed；Second, potentiometer is general only
The voltage signal of energy output linearity change, is difficult to for special output signal and curve.
In order to overcome restricted lifetime, linear precision present in above-mentioned contact straight-line displacement potentiometer to change with abrasion
Deficiency, those skilled in the art attempt traditional straight-line displacement potentiometer being improved with non-contacting working method.At present
Relatively common is the magnetostrictive displacement sensor based on magnetostriction principle, and magnet ring is moved with measuring staff during the working sensor
It is dynamic, after its magnetic field produced is via control processing of circuit, control circuit output analog signal, the traditional straight line of its service life as compared
Floatingpotential device is longer.But magnetostrictive displacement sensor is complicated, and there are certain requirement, Gu Qicheng to part material
This is high.
Utility model content
The purpose of this utility model is that there is provided a kind of straight-line displacement potentiometer in order to overcome the deficiencies in the prior art：Its work
Make long lifespan, the linear signal of High Linear precision can be exported, can also export the output signal of other species.
Realizing a kind of technical scheme of above-mentioned purpose is：A kind of straight-line displacement potentiometer, including magnetic screen shell, Yi Jigu
The Hall sensor in the magnetic screen shell is scheduled on, and can be in the magnetic screen shell, along the magnetic screen shell
Axial direction, carry out horizontal linear displacement permanent magnetic part, in the magnetic screen shell, the Hall sensor and the permanent magnetism
Part is staggered floor arrangement, and the output signal of the Hall sensor is exported by wire.
Further, the straight-line displacement potentiometer also includes the axial level along the magnetic screen shell through described
Magnetic screen shell, and the main shaft of horizontal linear displacement can be carried out along the axial direction of the magnetic screen shell；The permanent magnetic part exists
The lower section of the main shaft is fixed with the main shaft；The Hall sensor is consolidated in the top of the main shaft and the magnetic screen shell
It is fixed.
Further, the magnetic screen shell includes the housing of both ends open, and the housing forward end is closed
Front shaft sleeve is provided with protecgulum, and the bonnet that the housing rear end is closed, the protecgulum, the front end level of the main shaft runs through
The front shaft sleeve and the protecgulum, the rear end level of the main shaft run through the bonnet.
Further, coordinated between the front shaft sleeve and the main shaft by linear bearing.
Further, the rear portion socket of the main shaft is located at the back-moving spring in the magnetic screen shell.
Further, rear axle housing is provided with the bonnet, the rear end level of the main shaft runs through the rear axle housing and institute
State bonnet.
It is also further, it is described to be coordinated between main shaft and the rear axle housing by linear bearing.
Further, the permanent magnetic part is included in the sliding block that the lower section of the main shaft is fixed with the main shaft, and
The magnet steel being placed in the horizontal top surface of the sliding block, guideway is formed between the sliding block and the housing.
Further, the Hall sensor provided with Vdd pins, Test0 pins, Test2 pins, NU pins,
Ground pins, Vdig pins, Test1 pins and Out pins；
Ground pins, Test1 pins, Test0 pins, Test2 pins and NU pins are grounded simultaneously, and Vdig pins pass through
Electric capacity C1 is grounded, Vdd pins connection VCC ends, and is grounded by electric capacity C2；
Out pins are grounded by the resistance R1 and electric capacity C3 being arranged in parallel；
Out pins connect the wire.
Further, the Hall sensor, electric capacity C1, electric capacity C2, electric capacity C3 and resistance R1 are each attached to wiring board
On.
Employ a kind of technical scheme of straight-line displacement potentiometer of the present utility model, including magnetic screen shell, Yi Jigu
The Hall sensor in the magnetic screen shell is scheduled on, and can be in the magnetic screen shell, along the magnetic screen shell
Axial direction, carry out horizontal linear displacement permanent magnetic part, in the magnetic screen shell, the Hall sensor and the permanent magnetism
Part is staggered floor arrangement, and the output signal of the Hall sensor is exported by wire.It has the technical effect that：First avoids electricity
Brush and change the precision caused by the abrasion between resistive element, extend the working life of straight-line displacement potentiometer, second, work as Hall
When the output signal of sensor is linear signal, it has than the more preferable linear precision of traditional line floatingpotential device, and the 3rd, can
To carry out the output of a variety of output signals.
Brief description of the drawings
Fig. 1 is a kind of schematic perspective view of the first embodiment of straight-line displacement potentiometer of the present utility model.
Fig. 2 is a kind of sectional view of the first embodiment of straight-line displacement potentiometer of the present utility model.
Fig. 3 is a kind of schematic perspective view of the second embodiment of straight-line displacement potentiometer of the present utility model.
Fig. 4 is a kind of sectional view of the second embodiment of straight-line displacement potentiometer of the present utility model.
Fig. 5 is a kind of schematic diagram of the support of straight-line displacement potentiometer of the present utility model.
Fig. 6 is a kind of circuit diagram of the wiring board of straight-line displacement potentiometer of the present utility model.
Embodiment
Fig. 1 is referred to Fig. 6, inventor of the present utility model to the technical solution of the utility model in order to be able to preferably entering
Row understands, is described in detail below by specifically embodiment, and with reference to accompanying drawing：
First embodiment：
A kind of first embodiment of straight-line displacement potentiometer of the present invention, including magnetic screen shell 1, and along magnetic screen
The axial level of shell 1 runs through magnetic screen shell 1, and the master of horizontal linear displacement can be carried out along the axial direction of magnetic screen shell 1
Axle 2.
Wherein 1 point of magnetic screen shell is both ends open housing 11, and by the protecgulum 12 of the front end closing of housing 11, and
By the bonnet 13 of the back-end closure of housing 11.Wherein front shaft sleeve 14 is inlaid with protecgulum 12.The front end of main shaft 2 is along magnetic screen shell
1 axial level runs through front shaft sleeve 14 and protecgulum 12.Front shaft sleeve 14 is supported and is oriented to main shaft 2, front shaft sleeve 14 and main shaft 2
Between coordinate and corresponding linear bearing can be selected to realize, such as sliding bearing, bushing, band according to different use occasions
There is linear bearing of sealing etc..
The rear portion of main shaft 2 is socketed with the back-moving spring 21 inside magnetic screen shell 1, and back-moving spring 21 is main shaft 2
Horizontal linear displacement provides reset function, and front end and the main shaft 2 of back-moving spring 21 are fixed, and rear end is fixed with bonnet 13.Reset bullet
The not necessarily part of spring 21.The rear end of main shaft 2 is rearwardly through bonnet 13.
Magnetic screen shell 1 is section bar, can carry out magnetic cup to inside using the material of high magnetic permeability, high saturation and magnetic intensity
Cover, prevent the interference of external magnetic field.
Main shaft 2 is metal axial workpiece, under the guide effect of the through hole on front shaft sleeve 14 and bonnet 13, carries out level straight
Displacement of the lines.
The lower section of main shaft 2 is provided with can be in magnetic screen shell 1 with the synchronous permanent magnetic portion for carrying out horizontal linear displacement of main shaft 2
Part 3, permanent magnetic part 3 includes sliding block 31 and magnet steel 32.Sliding block 31 is plastic part, passes through screw and main shaft 2 below main shaft 2
Connect and fix.Magnet steel 32 is placed in the horizontal top surface of sliding block 31, so that the relative position between magnet steel 32 and main shaft 2 be consolidated
It is fixed.Magnet steel 32 is the permanent magnet that is made up of magnetic material, sliding block 31 it is synchronous with magnet steel 32 with main shaft 2 along magnetic screen shell 1
Axially, horizontal linear displacement is carried out.
During main shaft 2 carries out horizontal linear displacement with movable slider 31 and magnet steel 32, sliding block 31 coordinates with housing 11,
Guideway is formed, front shaft sleeve 14 plays a part of supporting and be oriented to main shaft 2, it is ensured that main shaft 2 is in horizontal linear displacement process
Stability, rocked so as to reduce main shaft 2 because horizontal linear displacement is issuable to the influence caused by Product Precision.
The top of main shaft 2 is provided with the wiring board 4 for being located at and being fixed with magnetic screen shell 1, wiring board 4 and is fixed with hall sensing
Device 41, Hall sensor 41 is MLX90360 Hall sensors.Hall sensor 41 provided with Vdd pins, Test0 pins,
Test2 pins, NU pins, Ground pins, Vdig pins, Test1 pins and Out pins.Wherein Ground pins, Test1
Pin, Test0 pins, Test2 pins and NU pins are grounded simultaneously, and Vdig pins are grounded by electric capacity C1, the connection of Vdd pins
VCC ends, and be grounded by electric capacity C2, form sensing circuit.Out pins are grounded by the resistance R1 and electric capacity C3 being arranged in parallel,
Form change-over circuit.In Out pins connecting wire 42, the welding assist side 4 of wire 42, and drawn by the hole on bonnet 13
Magnetic screen shell 1, with associated external equipment, such as storage device, signal receiving and recording equipment are connected, according to different use occasions,
Wire 42 can be with various forms of connector combinations.
Electric capacity C1, electric capacity C2 and electric capacity C3 breakdown voltage are 10V, and capacitance is 100nF, and resistance R1 resistance is 20k
Ω。
The surface of wiring board 4, wherein the part that the Out pins comprising wire 42 and Hall sensor 41 are welded, by anti-
Protective material coating is physically separated, and makes the surface of wiring board 4, wherein the Out pins comprising wire 42 Yu Hall sensor 41
The part of welding, possesses moistureproof, mould proof, salt spray proof, dust-proof, antistatic, the performance of insulation.
By the setting to Hall sensor 41, make the output signal of Hall sensor 41, both can be analog signalses,
Such as current signal, voltage signal etc., or digital quantity signal, such as SER signal, SSI signals etc..
A kind of straight-line displacement potentiometer of the present utility model, according to the position of main shaft 2, is exported relatively by Hall sensor 41
The output signal answered, the function is mainly realized by Hall sensor 41 and magnet steel 32.
Hall sensor 41 can by non-contacting form detect magnet steel 32 produced by magnetic field on three-dimensional magnetic strength
The change of intensity is answered, determines that magnet steel 32 is current by the variable angle between the quadrature component and Hall sensor 41 in the magnetic field
Angle position or linear position.
During a kind of straight-line displacement potentiometer work of the present utility model, Hall sensor 41 is placed in the magnetic of the generation of magnet steel 32
In the space of field, as main shaft 2 is with movable slider 31 and the progress horizontal linear displacement of magnet steel 32, Hall sensor 41 detects X-axis, i.e.,
The change of magnetic field intensity in the axially in parallel direction with main shaft 2, and Z axis, i.e. vertical direction, both direction, this change passes through
The analog signalses or digital quantity signal that the setting of Hall sensor 41 is converted into needing are exported, and obtain output signal.It is defeated
It can be pwm signal, SPI signal or SSI signals etc. to go out signal, and the external equipment output signal above-mentioned by gathering is straight to reach
The purpose of displacement of the lines detection.
A kind of beneficial effect of straight-line displacement potentiometer of the present utility model is, by connecing for traditional line floatingpotential device
Touch working method is changed to the non-contact operation mode using Hall effect, it is to avoid caused by the abrasion between brush and resistive element
Precision change, extend the working life of straight-line displacement potentiometer.Simultaneously when the output signal of Hall sensor 41 is linear
During signal, a kind of straight-line displacement potentiometer of the present utility model has more preferable linear precision.Hall sensor 41 also may be used simultaneously
The output signal of other species is exported, increases the output signal that a kind of straight-line displacement potentiometer of the present utility model can be output
Species, in same length magnetic screen shell 1, realizes the measurement of a variety of impulse strokes, reduces the cost of product.
Meanwhile, a kind of straight-line displacement potentiometer of the present utility model is also equipped with the support 16 for fixing magnetic screen shell 1.
Second embodiment
A kind of second embodiment of straight-line displacement potentiometer of the present invention, the difference compared to first embodiment is：Afterwards
Rear axle housing 15 is inlaid with lid 13.Axial level of the front end of main shaft 2 along magnetic screen shell 1 runs through front shaft sleeve 14 and protecgulum
12.Front shaft sleeve 14 is supported and is oriented to main shaft 2, and the cooperation between front shaft sleeve 14 and main shaft 2 can be according to different use fields
Close, select corresponding linear bearing to realize, such as sliding bearing, bushing, linear bearing with sealing etc..
Axial level of the rear end of main shaft 2 along magnetic screen shell 1 runs through rear axle housing 15 and bonnet 13.15 couples of masters of rear axle housing
Axle 2 is supported and is oriented to.Coordinating between rear axle housing 15 and main shaft 2 can select corresponding straight according to different use occasions
Bobbin holds to realize, such as sliding bearing, bushing, linear bearing with sealing etc..
The rear portion of main shaft 2 is socketed with the back-moving spring 21 inside magnetic screen shell 1, and back-moving spring 21 is main shaft 2
Horizontal linear displacement provides reset function, and front end and the main shaft 2 of back-moving spring 21 are fixed, the rear end of back-moving spring 21 and rear axle housing
15 fix.The not necessarily part of back-moving spring 21.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new
Type, and be not used as limiting of the present utility model, as long as in spirit of the present utility model, to described above
Change, the modification of embodiment will all fall in Claims scope of the present utility model.
Claims (10)
1. a kind of straight-line displacement potentiometer, including magnetic screen shell, it is characterised in that：The straight-line displacement potentiometer also includes solid
The Hall sensor in the magnetic screen shell is scheduled on, and can be in the magnetic screen shell, along the magnetic screen shell
Axial direction, carry out horizontal linear displacement permanent magnetic part, in the magnetic screen shell, the Hall sensor and the permanent magnetism
Part is staggered floor arrangement, and the output signal of the Hall sensor is exported by wire.
2. a kind of straight-line displacement potentiometer according to claim 1, it is characterised in that：The straight-line displacement potentiometer is also wrapped
Include along the axial level of the magnetic screen shell and run through the magnetic screen shell, and can be along the axial direction of the magnetic screen shell
Carry out the main shaft of horizontal linear displacement；The permanent magnetic part is fixed in the lower section of the main shaft with the main shaft；The Hall is passed
Sensor is fixed in the top of the main shaft with the magnetic screen shell.
3. a kind of straight-line displacement potentiometer according to claim 2, it is characterised in that：The magnetic screen shell includes two ends
The housing of opening, and the protecgulum that the housing forward end is closed, and the bonnet that the housing rear end is closed, the protecgulum
Interior to be provided with front shaft sleeve, the front end level of the main shaft runs through the front shaft sleeve and the protecgulum, and the rear end level of the main shaft is passed through
Wear the bonnet.
4. a kind of straight-line displacement potentiometer according to claim 3, it is characterised in that：The front shaft sleeve and the main shaft it
Between coordinated by linear bearing.
5. a kind of straight-line displacement potentiometer according to claim 3, it is characterised in that：The rear portion socket of the main shaft is located at
Back-moving spring in the magnetic screen shell.
6. a kind of straight-line displacement potentiometer according to claim 3, it is characterised in that：Rear axle housing is provided with the bonnet,
The rear end level of the main shaft runs through the rear axle housing and the bonnet.
7. a kind of straight-line displacement potentiometer according to claim 6, it is characterised in that：The main shaft and the rear axle housing it
Between coordinated by linear bearing.
8. a kind of straight-line displacement potentiometer according to claim 3, it is characterised in that：The permanent magnetic part is included in described
The sliding block that the lower section of main shaft and the main shaft are fixed, and the magnet steel being placed in the horizontal top surface of the sliding block, the sliding block with
Guideway is formed between the housing.
9. a kind of straight-line displacement potentiometer according to claim 1, it is characterised in that：The Hall sensor is provided with
Vdd pins, Test0 pins, Test2 pins, NU pins, Ground pins, Vdig pins, Test1 pins and Out pins；
Ground pins, Test1 pins, Test0 pins, Test2 pins and NU pins are grounded simultaneously, and Vdig pins pass through electric capacity
C1 is grounded, Vdd pins connection VCC ends, and is grounded by electric capacity C2；
Out pins are grounded by the resistance R1 and electric capacity C3 being arranged in parallel；
Out pins connect the wire.
10. a kind of straight-line displacement potentiometer according to claim 9, it is characterised in that：The Hall sensor, electric capacity
C1, electric capacity C2, electric capacity C3 and resistance R1 are each attached on wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039130.5U CN206432096U (en) | 2017-01-11 | 2017-01-11 | A kind of straight-line displacement potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039130.5U CN206432096U (en) | 2017-01-11 | 2017-01-11 | A kind of straight-line displacement potentiometer |
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| Publication Number | Publication Date |
|---|---|
| CN206432096U true CN206432096U (en) | 2017-08-22 |
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ID=59583656
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720039130.5U Active CN206432096U (en) | 2017-01-11 | 2017-01-11 | A kind of straight-line displacement potentiometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782962A (en) * | 2017-01-11 | 2017-05-31 | 上海思博机械电气有限公司 | A kind of straight-line displacement potentiometer |
-
2017
- 2017-01-11 CN CN201720039130.5U patent/CN206432096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782962A (en) * | 2017-01-11 | 2017-05-31 | 上海思博机械电气有限公司 | A kind of straight-line displacement potentiometer |
| CN106782962B (en) * | 2017-01-11 | 2023-04-28 | 上海思博机械电气有限公司 | Linear displacement potentiometer |
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