CN207395764U - A kind of rotational position sensor - Google Patents
A kind of rotational position sensor Download PDFInfo
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- CN207395764U CN207395764U CN201721210963.XU CN201721210963U CN207395764U CN 207395764 U CN207395764 U CN 207395764U CN 201721210963 U CN201721210963 U CN 201721210963U CN 207395764 U CN207395764 U CN 207395764U
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- contact
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- ring
- position sensor
- pedestal
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Abstract
The utility model is related to position sensor technical fields, refer in particular to a kind of rotational position sensor, including：Non-conductive pedestal, with the matched lid of pedestal, it is located at the ring contact of pedestal, the multiple fixed contacts for being located at pedestal being distributed in outside ring contact, stent between base and cover and the conducting ring being fixed on stent, the first contact that can be contacted with ring contact and the second contact that can be respectively contacted with each fixed contact on conducting ring, a first resistor film being series at each fixed contact one by one successively between each fixed contact being arranged on pedestal is further included, it is possible thereby to obtain the electric potential signal corresponding to 360 degree of each circumference in equal parts absolute positions.
Description
Technical field
The utility model is related to position sensor technical fields, refer in particular to a kind of rotational position sensor.
Background technology
Existing rotary disk electronic cipher lock and roller type electronic coded lock mostly use rotary encoder by turntable or rolling
The direction of rotation of wheel and relative position are converted to pulse signal (being typically two pulse signals, to distinguish rotating), pass through MCU
The processing of pulse signals, it (is typically 10 bit digitals composition that the relative position of turntable or idler wheel is accordingly shown as to digital
Word string), by confirmation operation, shown some numbers input to coded lock by the part as password.Above-mentioned existing skill
Art can be found in patent PCT/CN2004/000888 and US8638227B2.
It is defeated applied to password since the signal that common encoder is converted can only reflect the relative position of turntable or idler wheel
Enter device to also need to be equipped with digital display device.And existing absolute position encoder or sensor, reference can be made to BOURNS INC
The patent US5880683 authorized is obtained, either magneto-electric or photo-electric or condenser type, structure and peripheral circuit all compares
Complexity, applied to coded lock neck, there are certain difficulties.
In the granted patent US9035209B2 of HOSIDEN CORPORATION, disclose a kind of annular available for detection
The contact structure of scale disc spins rotation process, it includes a tool, and there are four the first activity of sliding block and a switch contact is tactile
Point, multiple the first fixed contacts being distributed in a ring, first fixed contact include the contact of four groups of width different interval distributions,
When predetermined voltage grants wherein two signalling contact in the first fixed contact, the first armature contact of rotation then can be from two signals
Two road pulse signals are drawn in contact, and pulse number corresponds to rotation angle, and the precedence that two tunnel pulses occur corresponds to rotation
Direction.
Utility model content
The purpose of this utility model is that providing a kind of freely can continuously rotate, simple in structure, reliable be suitable for
The position sensor of multi gear position rotation input device or multi-position rotary switch device is provided in particular in a kind of suitable for roller type
With the rotational position sensor of rotating-disc password input device.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：
A kind of rotational position sensor, it is characterized in that：Including non-conductive pedestal, with the matched lid of pedestal, base is located at
The ring contact of seat, arranged on the first pin of ring contact, at least three fixations for being located at pedestal being distributed in outside ring contact
Contact, two adjacent fixed contacts are equipped with second pin and the 3rd pin wherein, the rotation between base and cover
Component, the rotary part include stent and the conducting ring being fixed on stent, can be contacted with ring contact on conducting ring
The first contact and the second contact that can be contacted respectively with each fixed contact, at least three fixed contact circumference equi-spaced aparts point
Cloth；It further includes one and is arranged on each fixed contact being series at one by one successively first between second pin and the 3rd pin on pedestal
Resistance.
Preferably, the first resistor is equivalent resistance.
It is another preferred, first resistor film of the band there are one notch is further included, first resistor film includes covering fixation
The teeth portion of contact and the resistance section being connected with teeth portion, the resistance section are the first resistor.
Further, including being covered in the second resistance film on ring contact surface, first contact and second resistance film
Contact.
Preferably, the ring contact and fixed contact are made of conducting metals.
Another preferred, the ring contact and fixed contact are printed or coated in the conductive film on pedestal.
Further, the conducting ring is made of flexible conductive material, and conducting ring includes the first arm and the second arm,
First contact is arranged on the first arm, and second contact is arranged on the second arm, further includes and fixes the arranged on stent for connecting
3rd arm of one arm and the second arm.
Preferably, first arm and the second arm are the different semi-circular shape of two diameters, and the first arm bending forms one
Arc-shaped, arc-shaped center protrusion forms the first contact, and one of the second arm bending formation is arc-shaped, and arc-shaped center is convex
It rises and forms the second contact.
Another preferred, first arm is circular ring shape, which is provided with second first symmetrical with the first contact position
Contact.
Preferably, the alien invasion of the base and cover is circular or polygon-octagonal.
Further, the lid and pedestal are equipped with the elastic closing structure to match.
The advantageous effects of the utility model：
1st, can not only be obtained corresponding to 360 degree of each deciles using the structure that resistance ring film is covered in multiple fixed contacts
The electric signal of circumference absolute position, and resistance ring film occupies the space of very little, greatly reduces position sensor volume.
The frictional dissipation between conducting ring contact and fixed contact and ring contact is also reduced simultaneously, so as to extend the use of sensor
Service life.
2nd, compared with using the position sensor of pulse code and step-by-step counting, the fixed contact structure of the utility model and
Be laid out it is relatively easy, output signal be equal difference or equal proportion electric potential signal, the two tunnel pulse of peripheral circuit and decision logic ratio
It counts much simpler.
3rd, compared with the absolute position transducer based on capacitive coupling or inductive coupling the utility model resistive film material
Of low cost, parameters decentralization is small, and the signal of output is easier to handle and differentiate.
4th, compared with by the structure of the fixed contact of conducting metal and ring contact insertion pedestal, printed using on pedestal
Or coating macromolecule conductive film forms the volume and material of the structure, not only reduction of fixed contact and ring contact, but also significantly
Manufacture craft is simplified, saves manufacture cost.
Description of the drawings
Fig. 1 is the stereochemical structure exploded view of one technical solution of the utility model；
Fig. 2 is the three-dimensional structure diagram of technical solution shown in Fig. 1；
Fig. 3 is the part section three-dimensional structure diagram of technical solution shown in Fig. 1；
Fig. 4 be the utility model pedestal do not print or coat the first conductive film and the second conductive film before schematic diagram；
Fig. 5 be the utility model pedestal print or be coated with the first conductive film and the second conductive film after schematic diagram；
Fig. 6 be the utility model pedestal print or be coated with first resistor film and second resistance film after schematic diagram；
Fig. 7 is the first resistor membrane plane schematic diagram that the utility model is used for roller type coded lock；
Fig. 8 is first resistor membrane plane schematic diagram of the utility model for the rotary switch of multi gear position；
Fig. 9 is the first resistor membrane plane schematic diagram that the utility model is used for rotary disk type puzzle lock；
Figure 10 is the stereochemical structure exploded view of another technical solution of the utility model.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
The preferred embodiment in the utility model includes a kind of rotational position sensor for roller for luggage formula coded lock, the case
Bag coded lock uses numerical ciphers, is equably furnished with 0 to 90 numeral identification successively on idler wheel excircle, is rolled on lock body
The mounted position of wheel sets the window there are one suitable angle, which can expose when a number on front wheel, with
Which number on front wheel is worked as in instruction is rotated so far position.Idler wheel be designed can flexibly admire under with actuating one it is micro-
Type switchs, and after the microswitch is activated, that number of alignment windows is just confirmed to be a part of password, when true
When the number for the number recognized reaches default password digit, a complete password is input into coded lock.
Above-described embodiment there are two technical solution, their difference be only that the contour structures of conducting ring 50 it is different and
Pedestal 10 is different with the shape of lid 20, remaining is all identical, and Fig. 1 and Figure 10 clearly indicate that this point.This two
In a technical solution, 10 fixed contacts 40 touch this ten fixations just sequentially to correspond to 0~90 numbers on idler wheel
Head is connected with nine equivalent resistance, and 32 and the 3rd pin of second pin is drawn in two fixed contacts 40 of non-series resistor
33, and impose on voltage, then ten fixed contacts 4 are just provided with ten equal difference current potentials, when rotary part, that is, conducting ring 50 goes to it
In a fixed contact, the current potential of the fixed contact, ten equal difference current potentials can be obtained from the first pin 31 of ring contact 30
0~90 numbers are just corresponded to respectively.
The technical solution being connected to separated resistive element between each fixed contact 40 may be employed in nine substitutional resistances
(not shown) is provided through the pin of pedestal 10 on each fixed contact 40, resistive element is put in this scenario
In 10 back side of pedestal, the pin of nine resistance is respectively welded on the pin of ten fixed contacts 40.
In the present embodiment, nine resistance are synthesized to the first resistor film 70 of an inc annular, first resistor
Film 70 includes teeth portion 72 and the resistance section 71 being connected with teeth portion 72.72 compartment of terrain of teeth portion covers one of each fixed contact 40
Point, teeth portion 72 is made to be electrically connected with each fixed contact 40, the uncovered part of fixed contact 40 is also served as on conducting ring 50
The sliding rail of second contact 54,9 resistance sections 71 form nine substitutional resistances.
Ten fixed contacts 40 and conducting ring 50 are all made of using the high metal of conductivity, are touched by second therebetween
54 electrical connection of point, conducting ring 50 has certain elasticity after the present embodiment assembling, so that the second contact 54 keeps fixed contact
Certain contact, in rotation process, the second contact 54 and fixed contact contact surface inevitably generate friction,
Thereby result in the service life of effect of attrition the utility model.
Referring to Fig. 3, in order to reduce above-mentioned abrasion, the first resistor film 70 of the present embodiment uses anti abrasive polymeric material system
Into, and make first resistor film 70 that there are 10 teeth portion 72 and 9 resistance sections 71, each fixed contact surface is covered with film.It is based on
The reason for identical, the covering second resistance film 60 on 30 surface of ring contact, to reduce the first contact 53 being located on conducting ring 50
With the frictional force of ring contact 30.
70 thickness of first resistor film that the present embodiment uses is less than 0.1mm, due to thickness very little, covering fixed contact surface
40 surface of part resistive film and fixed contact between contact resistance very little, compared to that portion being covered between fixed contact
The resistance value in sub-resistance portion 71, can be ignored.The wear-resisting resistive film or the ingredient of resistive coating used as the present embodiment
It is known technology with matching and how to form the resistive film or resistive coating in electrically-conducting metal surface, is not repeating herein.
It can see from Fig. 1 and Fig. 3, each fixed contact 40 is partial sector, except two fixed contacts 40 are equipped with
Outside 32 and the 3rd pin 33 this difference of second pin, the shape and size of ten fixed contacts 40 are all identical.In pedestal
Ten depressions 15 that can be just embedded in ten fixed contacts are equidistantly provided on 10, are also provided with just on pedestal 10
The groove 14 of embedded ring contact 30.In the present embodiment, pedestal 10 such as has self-lubricating and flame retardant property by high molecule plastic
Nylon be made, the fixed form of fixed contact 40 and ring contact 30 and pedestal also may be used using one-time formed Shooting Technique
To be fixed using other methods such as printing or bonding.After first resistor film 70 and second resistance film 60 cover, first resistor film 70
The surface at interval 74 of surface and each teeth portion 72 of teeth portion 72 in same plane and be flat smooth.
Such as Fig. 4 to Fig. 6, another prioritization scheme of fixed contact 40 and ring contact 30 described in the utility model is：
Fixed contact 40 and ring contact 30 made of former conducting metal are substituted with conductive polymeric membrane or coating, are shown in Fig. 4
The position of the pedestal 10, in Fig. 4 14 and 15 of conductive film or conductive coating, i.e. ten fixed contacts 40 and a ring are not yet set
The position of shape contact 30, printing or the second conductive film 75 of coating and the first conductive film 65, form as shown in Figure 5 by conductive film group
Into fixed contact 40 and ring contact 30, the first lead wire for being connected with the first pin 31 is set on the first conductive film 65
41, the second lead wire 42 being connected with second pin 32 and the be connected with the 3rd pin 33 the 3rd is set on the second conductive film 75
Lead wire 43；As shown in fig. 6, foregoing first resistor film 70 and second resistance are republished or covered on the basis of above-mentioned conductive film
Film 60, it is possible to realize this prioritization scheme.This alternative is different outer except material and technique, function and act on all with
It is foregoing identical with the technical solution of ring contact 30 using the fixed contact 40 of conducting metal, it is substituted using conductive film
The beneficial of conductive metal contact has technical effect that：Making simplifies technique, saves cost of manufacture.
Conducting ring 50 is formed with elastic conduction sheet metal punching, and planform is there are two scheme, and first scheme is as schemed
Conducting ring 50 shown in 10, wherein the first arm 51 is a semi-circular shape with ring contact 30 with diameter, the second arm 52 is
One is distributed half circular ring shape of the circle with diameter with fixed contact 40, and two the 3rd arms 56 of stent 55 are radially by the first arm 51
It is fixed up with second arm 52 the two semi-circular arms, the one-time formed method of die casting equally may be employed.In the first arm 51
Bending forms an arc-shaped convex and just forms the first contact 53 at portion.Equally, one of 52 center bending of the second arm formation
Arc-shaped convex just forms the second contact 54.And above-mentioned first arm, 51 and second arm 53 is all bent downwardly an appropriate radian,
First contact 53 and the second contact 54 are all respectively at the vertex of the radian.After conducting ring 50 is packed into pedestal 10 and lid 20, on
It states the first contact 53 and the second contact 54 and is just provided with certain preset elasticity.
Second scheme of 50 planform of conducting ring show in Fig. 1, the first string phase with above-mentioned conducting ring 50
Than differing only in the shape of the first arm 51：In alternative plan, the first arm 51 is a circular ring shape, while can be first
51 symmetric position of arm sets second the first contact 53.Compared with first scheme, the machine of 50 entirety of conducting ring in alternative plan
Tool intensity is better, and more reliabilities of contact also improve operational reliability in addition.
Stent 55 is a plastic part, it is equipped with the second axis 57 being slidably matched with 10 second axis hole 13 of pedestal, with lid 20
The first axle 58 and the D-shaped hole 59 to match with outer drive shafts that first axis hole 23 is slidably matched.
For the shape of lid 20 and pedestal 10 also there are two scheme, Figure 10 shows first scheme：Lid 20 is an octagon
Plate, disk side impales by eight facades 22, and the female thread 21 of fastening structure, pedestal 10 are equipped on four facades 22 at interval
Be with 20 an equal amount of octagonal of lid, on corresponding four edges 12 be equipped with and female thread match pin thread 11.Fig. 1, Fig. 2 and figure
3 are illustrated that alternative plan：The alien invasion 22 for differing only in lid 20 and pedestal 10 with first scheme is circular.It sets different
Pedestal 10 and lid 20 shape, be mainly applicable in the different demand of idler wheel coded lock, can also there is other shapes certainly.
It is also symmetrically set on pedestal 10 there are two positioning column 16, when the present embodiment is installed to roll wheel assembly, which plays positioning
And fixation.
After the present embodiment completes assembling, by outer drive shafts, rotating conducting ring 50 can realize clockwise and anticlockwise
360 degree of both direction is continuously rotated without dead zone.The tooth-shape structure that resistance is classified or is segmented is used in a full circumferences, it can
To ensure to obtain same electric potential signal in 72 width range of tooth.In this way, specified to rotating to for idler wheel or turntable or knob
The required precision of position can relax, and advantageously reduce manufacture cost and improve operating reliability.It can from Fig. 7 and Fig. 8
Go out, the width of the tooth 72 of first resistor film 70 is more than space width (width and spacing of fixed contact 40 are same), so does
Purpose be have the second contact 54 and tooth 72 there are one larger contact sections.
Rotary disk type puzzle lock is commonly used in safe cabinet and cashbox door, and disk diameter is than the idler wheel of roller type password
Diameter is big, and more complicated password, such as password is needed to be made of English alphabet in the case of having, and comes for the utility model
It says, as long as the quantity of fixed contact 40 is set as 26, first resistor film 70 is as shown in figure 9, that this password can be realized is defeated
Enter function.Ten digits adds the password turntable of 26 English alphabets if necessary, if by the quantity of fixed contact 40 and
The quantity of the number of teeth 72 of first resistor film 70 increases to 36.It is to be appreciated that the quantity of fixed contact 40 is only by two
The limitation of minimum creep distance and minimum electric gap between adjacent fixed contact.
Fig. 8 shows the first resistor film suitable for the rotary switch of multi gear position, commonly used in many electrical equipments, such as
Electric fan, micro-wave oven and air conditioning for automobiles and illumination etc., by select the power that different functions or classification are selected in a manner of one, timing,
Rotating speed etc..Known multi-position rotary switch, load current are fixed during switch rotary directly by switch contact
Electric spark is easily generated between contact and armature contact, not only influences switch service life, also there are security risks.And according to
The electric potential signal that the utility model provides controls several noncontacting switches (such as thyristor) that can realize that multi gear position rotates
The function of switch, and electric spark will not be generated, higher security and longer service life can be obtained.
Above-described embodiment is the preferable implementation of the utility model, and in addition, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model on the premise of the technical program design is not departed from
Within enclosing.
Claims (11)
1. a kind of rotational position sensor, it is characterized in that：Including non-conductive pedestal, with the matched lid of pedestal, pedestal is located at
Ring contact, arranged on the first pin of ring contact, be distributed in being located at outside ring contact and at least three of pedestal fix and touch
Head, two adjacent fixed contacts are equipped with second pin and the 3rd pin wherein, the rotating part between base and cover
Part, the rotary part include stent and the conducting ring that is fixed on stent, can be contacted with ring contact on conducting ring
First contact and the second contact that can be contacted respectively with each fixed contact, at least three fixed contact circumference equi-spaced aparts point
Cloth；It further includes one and is arranged on each fixed contact being series at one by one successively first between second pin and the 3rd pin on pedestal
Resistance.
2. rotational position sensor according to claim 1, it is characterized in that：The first resistor is equivalent resistance.
3. rotational position sensor according to claim 1, it is characterized in that：Further include first resistor of the band there are one notch
Film, first resistor film include the resistance section for covering the teeth portion of fixed contact and being connected with teeth portion, and the resistance section is described
First resistor.
4. rotational position sensor according to claim 1, it is characterized in that：Second including being covered in ring contact surface
Resistive film, first contact are contacted with second resistance film.
5. according to rotational position sensor according to claim 1, it is characterized in that：The ring contact and fixed contact are
Conducting metal is made.
6. according to rotational position sensor according to claim 1, it is characterized in that：The ring contact and fixed contact are
Printing is made coated in the conductive film on pedestal.
7. rotational position sensor according to claim 1, it is characterized in that：The conducting ring is by flexible conduction material
Material is made, and conducting ring includes the first arm and the second arm, and first contact is arranged on the first arm, and second contact is arranged on second
Arm further includes the 3rd arm that the first arm and the second arm are fixed for connection arranged on stent.
8. rotational position sensor according to claim 7, it is characterized in that：First arm and the second arm are two diameters
Different semi-circular shape, the first arm bending form arc-shaped, first contact of arc-shaped center protrusion composition, the second arm folding
Bending into one it is arc-shaped, arc-shaped center protrusion forms the second contact.
9. rotational position sensor according to claim 7, it is characterized in that：First arm is circular ring shape, be which is provided with
Second the first contact symmetrical with the first contact position.
10. according to rotational position sensor described in any one of claim 1-9, it is characterized in that：Outside the base and cover
Facade is circular or polygon-octagonal.
11. according to rotational position sensor described in any one of claim 1-9, it is characterized in that：The lid and pedestal are equipped with
The elastic closing structure of matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721210963.XU CN207395764U (en) | 2018-03-20 | 2018-03-20 | A kind of rotational position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721210963.XU CN207395764U (en) | 2018-03-20 | 2018-03-20 | A kind of rotational position sensor |
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| Publication Number | Publication Date |
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| CN207395764U true CN207395764U (en) | 2018-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721210963.XU Active CN207395764U (en) | 2018-03-20 | 2018-03-20 | A kind of rotational position sensor |
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| CN (1) | CN207395764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051017A (en) * | 2018-03-20 | 2018-05-18 | 东莞市锁之道科技有限公司 | A kind of rotational position sensor |
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2018
- 2018-03-20 CN CN201721210963.XU patent/CN207395764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051017A (en) * | 2018-03-20 | 2018-05-18 | 东莞市锁之道科技有限公司 | A kind of rotational position sensor |
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Effective date of registration: 20211022 Address after: 201199 No. 376, Xinxi Road, Minhang District, Shanghai Patentee after: Shanghai Buddy Technological Co.,Ltd. Address before: 523017 room a1309, Huakai Plaza, Yuanmei Road, Nancheng District, Dongguan City, Guangdong Province Patentee before: Locway Technology Co.,Ltd. |