CN204202626U - A kind of capacitance type sensor induction installation structure - Google Patents
A kind of capacitance type sensor induction installation structure Download PDFInfo
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- CN204202626U CN204202626U CN201420541743.5U CN201420541743U CN204202626U CN 204202626 U CN204202626 U CN 204202626U CN 201420541743 U CN201420541743 U CN 201420541743U CN 204202626 U CN204202626 U CN 204202626U
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Abstract
The utility model discloses a kind of capacitance type sensor induction installation structure, it comprises and coordinates by upper cover and lower cover the shell formed, the center of fixing circuit board is provided with in shell, three inwalls of this center arrange three printed circuit board respectively, every printed circuit board prints out a slice induction pole plate respectively with Copper Foil, and three induction pole plates connect three detection pins of external detection chip respectively by three metal pins; Lower cover correspondence is provided with the through hole of being drawn by three metal pins that three induction pole plates connect; Being provided with one in the accommodation space that upper cover and center are formed can free rolling Metal Ball, and when Metal Ball is rolled in the accommodation space that center and upper cover are formed, the wherein a slice responding to pole plate with three or two panels contact.Capacitance type sensor induction installation structure of the present utility model, manufactures simple, and positioning precision higher, be easy to miniaturization, roll flexibly and induction sensitivity is higher, there is good practicality.
Description
Technical field
The utility model relates to capacitance type sensor, is specifically related to the induction installation of capacitance type sensor.
Background technology
Capacitance type sensor is a kind of device measured change being converted to electric capacitance change, inherently a kind of variable condenser.Because this sensor has structure simply, volume is little, and dynamic response is good, highly sensitive, resolution is high, can realize the features such as non-cpntact measurement, is thus widely used in the detection fields such as displacement, acceleration, vibration, pressure, pressure reduction, liquid level, decile content.
Current capacitance type sensor is made up of shell and induction pole plate, fixed sturcture and the detection chip be installed in shell usually.Wherein, induction pole plate normally manufactures separately, and it is very high to the accuracy requirement of production equipment, otherwise is easy to cause the not of uniform size of induction pole plate, and then affects measuring accuracy; In addition, when being got up by the assembling components such as induction pole plate, fixed sturcture, detection chip, it requires very high to the precision of installing equally, and this proposes very high requirement to production equipment, and assembles time-consuming.
Therefore, in order to solve the shortcoming that preparation is complicated, precision difficulty that is low, miniaturization is large of above-mentioned existing capacitance type sensor, one section of utility model patent of our company's application, see Fig. 1 and Fig. 2, propose a kind of induction installation of capacitance type sensor, it comprises upper cover 10, the printed circuit board (PCB) 11 coordinated with upper cover 10 and is positioned at three Metal Ball 12 of the cavity that upper cover 10 is formed with printed circuit board (PCB) 11.Printed circuit board (PCB) 11 is fixed on the induction installation covering the i.e. capacitance type sensor that composition one is complete.The upper surface of printed circuit board (PCB) 11 prints out three induction pole plates 13 by Copper Foil: be positioned at the first induction pole plate 131 in left side, be positioned at the 3rd induction pole plate 133 responded to pole plate 132 and be positioned at right side in second of centre, the lower surface of described printed circuit board (PCB) 11 is welded with three metal pins 14, and these three metal pins 14 are connected to three induction pole plates 13 on printed circuit board (PCB) 11 respectively.Metal Ball 12 adopts not magnetic metal to make, and the position of three Metal Ball 12 corresponding first induction pole plate 131, second induction pole plate 132 and the 3rd induction pole plate 133 respectively, wherein, the Metal Ball being positioned at both sides is fixedly placed in the fixed sturcture of upper cover 10 respectively, and being positioned at middle Metal Ball then can along with the change at the angle of inclination of printed circuit board (PCB) 11 at described cavity Free-rolling.
In above-mentioned patent, there is Metal Ball and be rolled to without Copper Foil from the Copper Foil on printed circuit board (PCB), and then roll on the process of Copper Foil, when rolling on Copper Foil, because Copper Foil has certain thickness, so cause rolling sensitive not.And the electric capacity using three Metal Ball also can make to sense reduces, insufficient sensitivity is high.
Utility model content
Therefore, for above-mentioned problem, the utility model proposes a kind of manufacture simple, with low cost, positioning precision is higher, be easy to miniaturization, roll flexibly and the higher capacitance type sensor induction installation structure of induction sensitivity, to overcome the deficiency in prior art.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is achieved in that a kind of capacitance type sensor induction installation structure, comprise and coordinate by upper cover and lower cover the shell formed, the center of fixing circuit board is provided with in shell, three inwalls of this center arrange three printed circuit board respectively, every printed circuit board prints out a slice induction pole plate respectively with Copper Foil, and three induction pole plates connect three detection pins of external detection chip respectively by three metal pins; Lower cover correspondence is provided with the through hole of being drawn by three metal pins that three induction pole plates connect; Being provided with one in the accommodation space that upper cover and center are formed can free rolling Metal Ball, and when Metal Ball is rolled in the accommodation space that center and upper cover are formed, the wherein a slice responding to pole plate with three or two panels contact.
Conveniently make, the bottom surface of described center arranges the first printed circuit board (PCB), and a sidewall adjacent with bottom surface of described center arranges the second printed circuit board (PCB), and another sidewall relative with the sidewall arranging this second printed circuit board (PCB) arranges the 3rd printed circuit board (PCB); When Metal Ball is rolled in the accommodation space that center and upper cover are formed, also namely roll on the induction electrode of the first printed circuit board (PCB), contact with the induction electrode of the second printed circuit board (PCB) or the induction electrode of the 3rd printed circuit board (PCB) simultaneously.
Further, as a feasible scheme, described center has base plate, the first side plate and the second side plate, and the upper surface of base plate is horizontally disposed with, and is fixed with the first printed circuit board (PCB); The inside surface of the first side plate and the inside surface of the second side plate and the upper surface of base plate is vertical arranges, the inside surface of the first side plate and the inside surface of the second side plate are parallel to each other, and the inside surface of the first side plate arranges the second printed circuit board (PCB), the inside surface of the second side plate arranges the 3rd printed circuit board (PCB).Like this, a wherein printed circuit board horizontal positioned, other two printed circuit board are vertically placed on both sides, Free-rolling in the cavity that Metal Ball can form at center and upper cover.Now, Metal Ball is limited in the cavity that center and upper cover form, along the surface scrolls of printed circuit board (PCB), no matter when Metal Ball is in any position in cavity, all be on induction pole plate, therefore when rolling be completely in a smooth plane, so it is very flexible to roll.
Conveniently make, as a feasible scheme, described center is combined by three printed circuit board, and this three printed circuit board is designated as the first printed circuit board (PCB), the second printed circuit board (PCB) and the 3rd printed circuit board (PCB); Concrete, the first printed circuit board (PCB) is horizontally disposed with, and the second printed circuit board (PCB) is arranged with the 3rd printed circuit board (PCB) is all vertical with the first printed circuit board (PCB), and the second printed circuit board (PCB) and the 3rd printed circuit board (PCB) parallel to each other.
In addition, this center also can be set to rectangular structure, and its bottom surface medial surface relative with two prints three printed circuit board (PCB)s respectively.
The utility model adopts said structure, and its three induction pole plates are made up of the Copper Foil on printed circuit board (PCB), and outside detection chip detects the capacitive differential between the induction pole plate of both sides and the induction pole plate of bottom in a differential manner.Very high size and positional precision can be accomplished with the induction pole plate that the Copper Foil printing of printed circuit board (PCB) is corroded, good symmetry can be obtained, very be applicable to Differential Detection mode.In addition, the utility model adopts three sides being positioned at Different Plane to arrange induction pole plate, arranging three with same plane of the prior art responds to compared with pole plate, it does not need shape and size to responding to pole plate to do too much restriction, Differential Detection can be realized, simplify manufacture craft, reduce cost of manufacture.Simultaneously, in prior art, Metal Ball is from when having rolled on Copper Foil place without Copper Foil, because Copper Foil has certain thickness, so cause rolling sensitive not, the utility model adopts three planes to arrange induction pole plate, Metal Ball is when rolling, locate on Copper Foil on a printed circuit always, therefore roll very sensitive, simultaneously, adopt a Metal Ball also to make the electric capacity sensed greatly improve, and then improve induction sensitivity.To sum up, capacitance type sensor induction installation structure of the present utility model, manufactures simple, and positioning precision higher, be easy to miniaturization, roll flexibly and induction sensitivity is higher, there is good practicality.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the capacitance type sensor induction installation structure of prior art;
Fig. 2 is the vertical view of the printed circuit board (PCB) of the capacitance type sensor induction installation structure of prior art;
Fig. 3 is the schematic perspective view of the capacitance type sensor induction installation structure of embodiment of the present utility model.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
The utility model provides a kind of induction installation taking to make on a printed circuit capacitance type sensor, and improves the structure of existing capacitance type sensor induction installation structure, makes it have Metal Ball and to roll feature flexibly.
Concrete, a kind of capacitance type sensor induction installation structure of the present utility model, comprises shell, three printed circuit board, Metal Ball, three metal pins.See Fig. 3, shell is coordinated by upper cover 11 and lower cover 12 and is formed.The center of fixing circuit board is provided with in shell, three inwalls of this center arrange three printed circuit board 30 respectively, every printed circuit board 30 prints out with Copper Foil a slice induction 40, three, pole plate induction pole plate 40 to connect external detection chip respectively three detection pins by three metal pins 50 respectively; Lower cover 12 correspondence is provided with the through hole of being drawn by three metal pins 50; Being provided with one in the accommodation space that upper cover 11 and center are formed can free rolling Metal Ball 60, and when Metal Ball 60 is rolled in the accommodation space that center and upper cover 11 are formed, the wherein a slice responding to pole plate 40 with three or two panels contact.
In the present embodiment, see Fig. 3, center is directly combined by three printed circuit board 30, this three printed circuit board is designated as the first printed circuit board (PCB) 31 being positioned at bottom, the second printed circuit board (PCB) 32 being positioned at both sides and the 3rd printed circuit board (PCB) 33; Concrete, the first printed circuit board (PCB) 31 is horizontally disposed with, and the second printed circuit board (PCB) 32 and the 3rd printed circuit board (PCB) 33 are all vertical with the first printed circuit board (PCB) 31 to be arranged, and the second printed circuit board (PCB) 32 and the 3rd printed circuit board (PCB) 33 parallel to each other.First printed circuit board (PCB) 31 upper surface is printed out by Copper Foil and is positioned at the first middle induction pole plate 41, the inside surface that the inside surface of the second printed circuit board (PCB) 32 prints out the on the left of being positioned at second induction pole plate the 42, three printed circuit board (PCB) 33 by Copper Foil prints out the 3rd induction pole plate (not shown on figure) being positioned at right side by Copper Foil.First induction pole plate 41 connects one of them detection pin of external detection chip respectively by the first metal pins 51, second induction pole plate 42 connects external detection chip respectively by the second metal pins 52 one of them detect pin, the 3rd induction pole plate connects one of them detection pin of external detection chip respectively by the 3rd metal pins 53.When Metal Ball 60 is rolled in the accommodation space that center and upper cover 11 are formed, also namely roll on the first induction pole plate 41 of the first printed circuit board (PCB) 31, contact with the second induction electrode 42 of the second printed circuit board (PCB) 32 or the 3rd induction electrode of the 3rd printed circuit board (PCB) 33 simultaneously.
Under said structure, Metal Ball is limited in the cavity that center and upper cover form, along the surface scrolls of printed circuit board (PCB), no matter when Metal Ball is in any position in cavity, all be on induction pole plate, therefore when rolling be completely in a smooth plane, so it is very flexible to roll.
In addition, center also can be realized by base plate, the first side plate and the second side plate, and wherein the upper surface of base plate is horizontally disposed with, and is fixed with the first printed circuit board (PCB); The inside surface of the first side plate and the inside surface of the second side plate and the upper surface of base plate is vertical arranges, the inside surface of the first side plate and the inside surface of the second side plate are parallel to each other, and the inside surface of the first side plate arranges the second printed circuit board (PCB), the inside surface of the second side plate arranges the 3rd printed circuit board (PCB).Like this, also can realize a wherein printed circuit board horizontal positioned, other two printed circuit board are vertically placed on both sides, Free-rolling in the cavity that Metal Ball can form at center and upper cover.
In addition, this center can also be set to rectangular structure, and its bottom surface medial surface relative with two prints three printed circuit board (PCB)s respectively.
Specifically describe below and of the present utility modelly realize principle.
Make Metal Ball 60 and the first capacitance responded between pole plate 41 be C1, Metal Ball 60 and the second capacitance responded between pole plate 42 are C2, and Metal Ball 60 and the 3rd capacitance responded between pole plate is C3.Metal Ball 60 near second induction pole plate 42 time both between capacitance be C2.1, away from time capacitance be C2.2, Metal Ball 60 near the 3rd induction pole plate time both between capacitance be C3.1, away from time capacitance be C3.2.Wherein C2.1=C3.1>C2.2=C3.2.
So when Metal Ball 60 is close to the first induction pole plate 41, capacitance between first metal pins 51 with the second metal pins 52 is that C1 and C2.1 connects, capacitance between 3rd metal pins 53 with the second metal pins 52 is that C1 and C3.2 connects, the former is greater than the latter, so external detection chip can determine Metal Ball 60 be positioned at the position responding to pole plate 42 near second; Otherwise external detection chip can determine Metal Ball 60 and be positioned at the position responding to pole plate near the 3rd.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (4)
1. a capacitance type sensor induction installation structure, is characterized in that:
Comprise and coordinate by upper cover and lower cover the shell formed;
The center of fixing circuit board is provided with in shell, three inwalls of this center arrange three printed circuit board respectively, every printed circuit board prints out a slice induction pole plate respectively with Copper Foil, and three induction pole plates connect three detection pins of external detection chip respectively by three metal pins;
Lower cover correspondence is provided with the through hole that three metal pins are drawn;
Being provided with one in the accommodation space that upper cover and center are formed can free rolling Metal Ball, and when Metal Ball is rolled in the accommodation space that center and upper cover are formed, the wherein a slice responding to pole plate with three or two panels contact.
2. capacitance type sensor induction installation structure according to claim 1, it is characterized in that: the bottom surface of described center arranges the first printed circuit board (PCB), a sidewall adjacent with bottom surface of described center arranges the second printed circuit board (PCB), and another sidewall relative with the sidewall arranging this second printed circuit board (PCB) arranges the 3rd printed circuit board (PCB); When Metal Ball is rolled in the accommodation space that center and upper cover are formed, also namely roll on the induction electrode of the first printed circuit board (PCB), contact with the induction electrode of the second printed circuit board (PCB) or the induction electrode of the 3rd printed circuit board (PCB) simultaneously.
3. capacitance type sensor induction installation structure according to claim 1, is characterized in that: described center has base plate, the first side plate and the second side plate, and the upper surface of base plate is horizontally disposed with, and is fixed with the first printed circuit board (PCB); The inside surface of the first side plate and the inside surface of the second side plate and the upper surface of base plate is vertical arranges, the inside surface of the first side plate and the inside surface of the second side plate are parallel to each other, and the inside surface of the first side plate arranges the second printed circuit board (PCB), the inside surface of the second side plate arranges the 3rd printed circuit board (PCB).
4. capacitance type sensor induction installation structure according to claim 1, is characterized in that: described center is combined by three printed circuit board, and this three printed circuit board is designated as the first printed circuit board (PCB), the second printed circuit board (PCB) and the 3rd printed circuit board (PCB); Concrete, the first printed circuit board (PCB) is horizontally disposed with, and the second printed circuit board (PCB) is arranged with the 3rd printed circuit board (PCB) is all vertical with the first printed circuit board (PCB), and the second printed circuit board (PCB) and the 3rd printed circuit board (PCB) parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541743.5U CN204202626U (en) | 2014-09-22 | 2014-09-22 | A kind of capacitance type sensor induction installation structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541743.5U CN204202626U (en) | 2014-09-22 | 2014-09-22 | A kind of capacitance type sensor induction installation structure |
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| CN204202626U true CN204202626U (en) | 2015-03-11 |
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| CN201420541743.5U Active CN204202626U (en) | 2014-09-22 | 2014-09-22 | A kind of capacitance type sensor induction installation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773290A (en) * | 2019-02-21 | 2019-05-21 | 清华大学 | The insulating materials workpiece surface of microballoon electrical contact feedback is directed at system and method |
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2014
- 2014-09-22 CN CN201420541743.5U patent/CN204202626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773290A (en) * | 2019-02-21 | 2019-05-21 | 清华大学 | The insulating materials workpiece surface of microballoon electrical contact feedback is directed at system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361000, Huli District, Fujian City, Xiamen province software park two expected sea route 23-405 Patentee after: Xiamen Polytron Technologies Inc Address before: 361000, Huli District, Fujian City, Xiamen province software park two expected sea route 23-405 Patentee before: Xiamen Chipsun Technology Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Capacitive sensor induction device structure Effective date of registration: 20181219 Granted publication date: 20150311 Pledgee: Xiamen finance Company limited by guarantee Pledgor: Xiamen Polytron Technologies Inc Registration number: 2018990001233 |