CN109756221A - Hall key - Google Patents
Hall key Download PDFInfo
- Publication number
- CN109756221A CN109756221A CN201711071178.5A CN201711071178A CN109756221A CN 109756221 A CN109756221 A CN 109756221A CN 201711071178 A CN201711071178 A CN 201711071178A CN 109756221 A CN109756221 A CN 109756221A
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- Prior art keywords
- magnet
- hall
- key
- hall element
- magnetic field
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Links
- 238000000926 separation method Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000428 dust Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Push-Button Switches (AREA)
Abstract
The present invention provides a kind of Hall keys, comprising: Hall element, and it is located at the first magnet and the second magnet of the opposite sides of Hall element, and the magnetic direction of the first magnet and the second magnet is opposite.When Hall key is in off working state, Hall element exports low level because of the magnetic field of the second magnet, when pressing Hall key, the magnetic field of the second magnet of magnetic field cancellation of first magnet, at this point, Hall element exports high level, when unclamping Hall key, the negative function in the magnetic field of the first magnet disappears, and Hall element exports low level again.The switch over travel of Hall key is 0~2mm, can directly replace the senses of touch type such as film key switch, structure is simple, and cost is relatively low, can achieve the effect that good water proof and dust proof.
Description
Technical field
The present invention relates to a kind of input units, relate generally to a kind of Hall key.
Background technique
Key general at present has mechanical key, silica gel push-button and film key, wherein has machinery to open in mechanical key
It closes, has metal spring inside mechanical switch, the function of on and off is realized by being turned on or off for contact, simple process, still
Sound is larger, and is unable to water proof and dust proof.
Silica gel push-button has the characteristics that excellent heat resistance, cold resistance, environment resistant, electric insulating quality, fatigue durability, but
Be belong to sense of touch type switch there is still a need for realizing the function of on and off using being turned on or off for hard contact, thus cannot its into
The encapsulation process of row water proof and dust proof.
Film key has been covered with metal dots on conductive film, when key moves downward, leading below key
Electric glue material either metal clips has just been fallen on above metal dots, achievees the effect that connection, to complete relevant work.With
Traditional silica gel push-button is compared, and film key has better feel, longer service life, can be improved indirectly using conductive film
All types of switches production efficiency.Film key is a kind of sense of touch type switch, cannot be carried out at water proof and dust proof to film key
It manages, otherwise film key cisco unity malfunction.
Hall key utilizes Hall element and magnet, and without being contacted, therefore it is anti-to carry out waterproof to Hall key
Dirt processing, but because the change rate that the magnetic field of magnet is adjusted the distance is smaller so that switch over travel is in 4mm~5mm, and silica gel push-button or
The switch over travel of film key is in 1mm~2mm or so, therefore current Hall key cannot directly replace pressing for above-mentioned sense of touch type
Key carry out using.
Summary of the invention
The object of the present invention is to provide a kind of Hall key, it can make to obtain lesser switch over travel and preferable waterproof is anti-
The sealing effect of dirt, and cost is relatively low, it is easy to operate.
The present invention provides a kind of Hall key, comprising: Hall element, and be located at Hall element opposite sides
One magnet and the second magnet, and the magnetic direction of the first magnet and the second magnet is opposite.
Preferably, the first magnet is also fixedly connected with button cap.
The present invention when Hall key is in off working state, Hall element because the second magnet magnetic field export low level,
When pressing keys cap, pine is worked as at this point, Hall element exports high level in the magnetic field of the second magnet of magnetic field cancellation of the first magnet
When open button cap 1, the negative function in the magnetic field of the first magnet disappears, and Hall element exports low level again.According to the comment of variation
Pressing keys are judged whether there is, it is clear reliable.
Preferably, the switch over travel of Hall key is 0~2mm.
Preferably, Hall element is 3mm~12mm at a distance from the first magnet, and Hall element is at a distance from the second magnet
1mm~10mm.
In the present invention, by the way that above-mentioned distance is arranged, it may make that switch over travel is smaller.
Preferably, Hall element is switching Hall components or analogue type Hall element.
Preferably, the first magnet and the second magnet are permanent magnet.
In the present invention, switching Hall components output 0 and 1 is obvious to the level change before and after pressing keys, to rear
Continuous operation has preferable indicative function, and easy to operate, cost is relatively low；Analogue type Hall element output numerical value, by the way that threshold value is arranged
Judge to export high level or low level again, so that Hall button operation is flexible, Hall key is adjusted in user setting threshold value
Sensitivity；The service life of Hall key can be extended using permanent magnet.
The invention also provides a kind of Hall keyboards, using 2 or 2 above-mentioned Hall keys.
Preferably, the minimum range of adjacent 2 Hall keys is greater than 10mm.
Preferably, separation layer is set among adjacent 2 Hall keys.
In the present invention, Hall keyboard includes 2 or 2 or more Hall keys, by the way that adjacent 2 Hall keys are arranged
Minimum range or separation layer is set among adjacent 2 Hall keys, avoids adjacent the first magnet or the second magnet
Influence of the magnetic field to adjacent Hall element, avoids maloperation.
In conclusion the present invention makes Hall element export low level in off working state using the second magnet, pressing
When, Hall key exports high level, and after release, Hall key exports low level again, and switch over travel foreshortens to 0~2mm, can be straight
It takes over and changes the senses of touch type such as film key switch, structure is simple, and cost is relatively low, can achieve the effect that good water proof and dust proof.
Detailed description of the invention
The above and other feature of the present invention, property and advantage will pass through description with reference to the accompanying drawings and examples
And become apparent, identical appended drawing reference always shows identical feature in the accompanying drawings, in which:
Fig. 1 shows the structural schematic diagram of Hall key of the invention.
Fig. 2 shows the schematic diagrames of another structure of Hall key of the invention.
Fig. 3 shows the structure chart of Hall keyboard of the invention.
Fig. 4 shows another structure chart of Hall keyboard of the invention.
Appended drawing reference:
100,200,1001,1002,1003-Hall keys
101,201-button caps
102,202-the first magnet
103,203-the second magnet
104,204-Hall elements
300-Hall keyboards
301-shells
302-sealants
Specific embodiment
For the above objects, features and advantages of the present invention can be clearer and more comprehensible, below in conjunction with attached drawing to tool of the invention
Body embodiment elaborates.
The embodiment of the present invention is described with detailed reference to attached drawing now.Now with detailed reference to preferred implementation of the invention
Example, its example is shown in the drawings.In the case of any possible, phase will be indicated using identical label in all the appended drawings
Same or similar part.In addition, although term used in the present invention is selected from public term, this
Some terms mentioned in description of the invention may be that applicant is judged to carry out selection as his or her, and detailed meanings are at this
Illustrate in the relevant portion of the description of text.Furthermore, it is desirable that not only by used actual terms, and be also to by each
Meaning that term is contained understands the present invention.
Embodiment one:
Fig. 1 shows the structural schematic diagram of Hall key of the invention.
As shown in Fig. 1 (a), Hall key 100 includes button cap 101, the first magnet 102, the second magnet 103 and Hall
Element 104, wherein the first magnet 102 and the second magnet 103 are identical, but magnetic direction is on the contrary, and be located at Hall
The opposite sides of element.The position of second magnet 103 and Hall element 104 is relatively fixed, the distance between be h1, at this time suddenly
That element 104 exports low level because of the magnetic field of the second magnet 103.When non-pressing keys cap 101, the first magnet 102 is located at S2
It is h2 at a distance from Hall element 104 at position.
As shown in Fig. 1 (b), when press graphic arrow direction pressing keys cap 101 when, the magnetic field of the first magnet 102 start to
Disappear the magnetic field of the second magnet 103.When the first magnet 102 is located at the position S1, the first magnet 102 and Hall element 104 at this time
Distance is h1, and the magnetic field of the first magnet 102 is completely counterbalanced by the magnetic field of the second magnet 103, and Hall element 104 exports high level.
When stopping pressing keys cap 101, the first magnet 102 starts to recoil at the position S2, at this point, the first magnet 102
Magnetic field disappear to the negative function in the magnetic field of the second magnet 103, Hall element 104 is defeated again because of the magnetic field of the second magnet 103
Low level out.
In another embodiment, distance h1 is 1mm~10mm, and distance h2 is 3mm~12mm, and h2 > h1, Hall key
100 switch over travel is the difference of distance h2 and h1, and range is 1mm~2mm.
In another embodiment, Hall element 104 is unipolarity Hall element or bipolarity Hall element.
In another embodiment, when non-pressing keys cap 101, setting Hall element 104 is exported because of the magnetic field of the second magnet 103
High level；After pressing keys cap 101, after the magnetic field of the first magnet 102 is completely counterbalanced by the magnetic field of the second magnet 103, Hall element
104 output low levels；When stopping pressing keys cap 101, the magnetic field of the first magnet 102 is supported to the magnetic field of the second magnet 103
Disappear event resolves, and Hall element 104 exports high level because of the magnetic field of the second magnet 103 again at this time.
In the present embodiment, the S of the first magnet 102 is extremely upward, N is extremely downward, and the N of the second magnet 103 is extremely upward, S is extremely downward,
So that the first magnet 102 is opposite with the magnetic direction of the second magnet 103.It is similar, when be arranged the N of the first magnet 102 extremely upwards,
When S is extremely downward, the S of the second magnet 103 is extremely upward, N is extremely downward.
In order to enable Hall key 100 obtains longer service life, the first magnet 102 and the second magnet 103 are permanent
Magnet.
In the present embodiment, it is in off working state in Hall key, Hall element exports low electricity because of the magnetic field of the second magnet
It is flat, when pressing keys cap 101, the magnetic field of the second magnet of magnetic field cancellation 103 of the first magnet 102, at this point, Hall element exports
High level, when unclamping button cap 101, the negative function in the magnetic field of the first magnet 102 disappears, and Hall element exports low electricity again
It is flat.The present embodiment can be substituted directly existing by the way that distance h1 and h2 is arranged so that switch over travel h3 is contracted to 1mm~2mm
The senses of touch type such as film key switch, only increases by the second magnet 103, and cost is relatively low, is easy production.
Embodiment two:
In the structural schematic diagram of Hall key 100 shown in Fig. 1, Hall element 104 is switching Hall components, defeated
Signal is 0 and 1 out.When non-pressing keys cap 101, Hall element 104 exports low level 0 because of the magnetic field of the second magnet 103；When
When pressing keys cap 101, the magnetic field of the first magnet 102 starts to offset the magnetic field of the second magnet 103, until all offset, at this point,
Hall element 104 exports high level 1；When unclamping button cap 101, the rebound of the first magnet 102, the magnetic field pair of the first magnet 102
The negative function of first magnet 103 disappears, at this point, Hall element 104 exports low level 0 because of the magnetic field of the second magnet 103 again.
In another embodiment, Hall element 104 is analogue type Hall element, output numerical value.When non-pressing keys cap
When 101, magnetic field output numerical value C of the Hall element 104 because of the second magnet 103；When pressing keys cap 101, the first magnet 102
Magnetic field starts to offset the magnetic field of the second magnet 103, at this point, 104 output numerical value D of Hall element；When unclamping button cap 101, the
One magnet 102 recoils at S1, and the magnetic field of the first magnet 102 is decreased to zero to the effect of Hall element, at this point, Hall element
104 because the second magnet 103 magnetic field output numerical value C.
When numerical value C≤first threshold, it is set as low level, when numerical value D >=second threshold, is set as high level, if
Numerical value C and D are unsatisfactory for above-mentioned condition, then it is assumed that pressing is invalid.
When sufficiently pressing when, i.e., when the first magnet 102 do not reach just unclamp button cap 101 at the position S1 when, pass through
The output valve of the Hall element 104 of current position is judged, if this output valve >=second threshold, is still set to high level.
In another embodiment, first threshold is 0.1V~0.3V, and second threshold is 0.6V~0.8V.
Switching Hall components or analogue type Hall element are used in the present embodiment, expand use scope, it is easy to operate,
Cost is relatively low.
Embodiment three:
Fig. 2 shows the schematic diagrames of another structure of Hall key of the invention.
Embodiment three and the difference of embodiment one are that the first magnet 102 and the second magnet 103 in embodiment one have been
Exactly the same；In embodiment three, the magnetic force of the first magnet 202 is greater than the magnetic force of the second magnet 203.
In Hall key 200 as shown in Figure 2, when non-pressing keys cap 201, the first magnet 202 is located at the position S2,
The distance between Hall element 204 is h2, and the distance between the second magnet 203 and Hall element 204 are h1, at this time Hall member
Part 204 exports low level because of the magnetic field of the second magnet 203.When pressing the button cap 201, the first magnet 202 moves to the position S1
Place, the magnetic field of the first magnet 202 completely cancel out the magnetic field of the second magnet 203, and Hall element 204 exports high level at this time, suddenly
The switch over travel of your key 200 is h3.
When setting distance h1 is 1mm~10mm, when distance h2 is 3mm~12mm, because of the magnetic force of the magnetic force 202 of the first magnet
Larger, switch over travel h3 is further reduced to 0~2mm.
In the present embodiment, by the first magnet and the second magnet of the different magnetic force of setting, switch over travel is further reduced,
It makes it easier to operate, cost is relatively low.
Example IV:
Fig. 3 shows the structure chart of Hall keyboard of the invention.
As shown in figure 3, Hall keyboard 200 includes 3 Hall keys 1001,1002 and 1003, wherein 3 the second magnet
It is each attached to inside the shell 301 of Hall keyboard 200 with 3 Hall elements, 3 the first magnet are located at the surface of shell 301.Phase
The minimum range of adjacent 2 Hall keys is d, and d >=10mm, avoids the magnetic field of the first magnet or the second magnet to adjacent Hall
The effect of element.
In order to further decrease distance d, separation layer can be set among adjacent 2 Hall keys, prevent adjacent first
Effect of the magnetic field of magnet or the second magnet to adjacent Hall element, at this point, the minimum range of adjacent 2 Hall keys be every
The thickness of absciss layer.
In order to simplify installation or sealing technology, the second all magnet can be mounted on a pedestal, then to each
Corresponding Hall element and the first magnet is arranged in two magnet.
In another embodiment, in order to reach the sealing effect of preferable water proof and dust proof, the second magnet and Hall element
It is sealed using sealant 302, as shown in figure 4, on the one hand securing the position of the second magnet and Hall element, another party
Face, sealant 302 make Hall key dustproof and waterproof, and will not influence Hall key normal work.For operating easily, institute
The other elements in the second magnet and Hall element and Hall keyboard 200 having seal together.
In the present embodiment, when several Hall keys are arranged, the minimum range of adjacent Hall key is greater than 10mm,
Or separation layer is set among adjacent Hall key, avoid the magnetic field of the first magnet or the second magnet to adjacent Hall member
The effect of part.Second magnet and Hall element are sealed, good water proof and dust proof effect is reached.
In conclusion making Hall element export low level in off working state using the second magnet, pressed in pressing Hall
High level is exported when key, exports low level again after unclamping Hall key, and switch over travel foreshortens to 1mm~2mm, can directly replace
The senses of touch type such as film key switch, structure is simple, and cost is relatively low, can achieve the effect that good water proof and dust proof.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (9)
1. a kind of Hall key characterized by comprising Hall element, and it is located at the opposite sides of the Hall element
The first magnet and the second magnet, the magnetic direction of first magnet and second magnet is opposite.
2. a kind of Hall key as described in claim 1, which is characterized in that first magnet, which is also fixed with button cap, to be connected
It connects.
3. a kind of Hall key as described in claim 1, which is characterized in that the switch over travel of the Hall key is 0~
2mm。
4. a kind of Hall key as described in claim 1, which is characterized in that the Hall element and first magnet away from
From for 3mm~12mm, the Hall element is 1mm~10mm at a distance from second magnet.
5. a kind of Hall key as described in claim 1, which is characterized in that the Hall element be switching Hall components or
Analogue type Hall element.
6. a kind of Hall key as described in claim 1, which is characterized in that first magnet and the second magnet are permanent magnetic
Iron.
7. a kind of Hall keyboard, using 2 or 2 or more Hall keys as described in any one of claims 1 to 6.
8. a kind of Hall keyboard as claimed in claim 7, which is characterized in that the most narrow spacing of the adjacent 2 Hall keys
From greater than 10mm.
9. a kind of Hall keyboard as claimed in claim 7, which is characterized in that it is characterized in that, adjacent 2 Halls are pressed
Separation layer is set among key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071178.5A CN109756221A (en) | 2017-11-03 | 2017-11-03 | Hall key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071178.5A CN109756221A (en) | 2017-11-03 | 2017-11-03 | Hall key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109756221A true CN109756221A (en) | 2019-05-14 |
Family
ID=66399289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711071178.5A Withdrawn CN109756221A (en) | 2017-11-03 | 2017-11-03 | Hall key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109756221A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318785A (en) * | 1997-05-19 | 1998-12-04 | Ubukata Seisakusho:Kk | Magnetic sensor |
| JPH11202036A (en) * | 1998-01-08 | 1999-07-30 | Ubukata Seisakusho:Kk | Magnetic sensor |
| WO2017081161A2 (en) * | 2015-11-11 | 2017-05-18 | Fm Marketing Gmbh | Remote-control system with homopolar magnets |
| CN207743951U (en) * | 2017-11-03 | 2018-08-17 | 梅特勒-托利多(常州)测量技术有限公司 | Hall button and hall keyboard |
-
2017
- 2017-11-03 CN CN201711071178.5A patent/CN109756221A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318785A (en) * | 1997-05-19 | 1998-12-04 | Ubukata Seisakusho:Kk | Magnetic sensor |
| JPH11202036A (en) * | 1998-01-08 | 1999-07-30 | Ubukata Seisakusho:Kk | Magnetic sensor |
| WO2017081161A2 (en) * | 2015-11-11 | 2017-05-18 | Fm Marketing Gmbh | Remote-control system with homopolar magnets |
| CN207743951U (en) * | 2017-11-03 | 2018-08-17 | 梅特勒-托利多(常州)测量技术有限公司 | Hall button and hall keyboard |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190514 |