CN1116637C - Indicator able to sense roof pressure sensitively - Google Patents
Indicator able to sense roof pressure sensitively Download PDFInfo
- Publication number
- CN1116637C CN1116637C CN99123341A CN99123341A CN1116637C CN 1116637 C CN1116637 C CN 1116637C CN 99123341 A CN99123341 A CN 99123341A CN 99123341 A CN99123341 A CN 99123341A CN 1116637 C CN1116637 C CN 1116637C
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- CN
- China
- Prior art keywords
- rod
- index device
- cap
- strainometer
- base portion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to an indicator capable of sensitively sensing cap pressure. The present invention comprises a base plate, a rod body, a cap and a base seat part, wherein the bottom end of the rod body is vertically fixed in a hole of the base plate, and the periphery of the top end of the rod body is provided with a plurality of perpendicular strain gauges for sensing pressure and generating a sensing signal; the inner side of the lower part of the cap is provided with a tapered tank for containing the top end and the periphery part of the top end of the rod body; the base seat part is covered to the periphery of the top end of the rod body and is positioned between the periphery of the top end of the rod body and the tapered tank. The top ends of the strain gauges all extend to the top end of the rod body and are covered by a base seat. The top ends of the strain gauges are easy to sense the pressure of the cap so as to increase the sensitivity of the indicator.
Description
The present invention relates to a kind of index device, particularly relate to a kind of index device of the cap of sensing delicately pressure.
Index device can be used to moving (Movement), location (Positioning) and carrying out (Execution) of vernier on the controlling computer display screen (Cursor).Index device has been widely used in the peripheral equipment (Peripheral) of various desk-top and laptops, for example keyboard (Keyboard), mouse (Mouse), rocking bar (Joystick) and telepilot peripheral equipments such as (Remote controller).Vernier moves on display screen can three-dimensional move mode, comprising X-, Y-, and Z-direction.Yet existing index device only can be controlled vernier bidimensional " moving ", just X-, and the Y-direction is mobile, and after the determining positions of X-and Y-direction, must press the function that (Click) button could be realized " location " or " execution " in addition.
Variation and downsizing along with computer peripheral device, how to strengthen sensitivity at X-direction and Y-direction generation strain signal, and promote index device and produce the sensitivity of strain signal so that index device reaches the function of " execution " with " location " in the Z-direction, replace traditional index device to implement the function that " location " reaches " execution " by the button of Z-direction, real is the important topic of current index device design.Universal day by day along with computer stereoscopic drawing and 3-D cartoon again, existing two-dimensional signal transmission can not be satisfied practical application, must have more effective mode to produce the transmission of third dimension signal.Therefore how to design an important topic that also designs at the index device of Z-direction high sensitivity signal transmission for current index device.
See also Fig. 1, Fig. 1 is the cut-open view of existing index device 10.Existing index device 10 comprises that an even cylindricality body of rod (Stick) 12 is used for that the two dimension of vernier (not shown) moves on the controlling computer display screen.The body of rod 12 comprises a top 13, a top peripheral part 15 and a bottom 17.Index device 10 includes the top 13 that a cap (Adaptor) 20 is enclosed within the body of rod 12 in addition, one rubber lid 21 is enclosed within on the cap 20 so that the pressing of user, one substrate (Substrate) 30 that contains a hole (Aperture) 36 is used for fixing the body of rod 12, a plurality of bar shaped strainometers (Strain gauge) 22 vertically are arranged at top peripheral part 15 of the body of rod 12, be used for pressure sensor and produce corresponding sensing signal, a plurality of terminals (Lead) 24 are connected in the lower end of several bar shaped strainometers 22, many wiring (Trace) 32 are arranged at substrate 30 and are welded in a plurality of terminals (Lead) 24 in solder joint 34 places, be used for connecting the sensing signal that strainometer 22 is produced with transmission strainometer 22, one circle ring (Collar) 28 be placed in body of rod bottom 17 around and be positioned on the substrate 30, an and fixing glue 26 (Bounding compound), clog in the bottom of the body of rod 17 peripheral part and between substrate 30, and be covered in the lower end of bar shaped strainometer 22 between the circle ring 28, be used for the bottom 17 of the body of rod 12 is fixed in the hole 36 of substrate 30.
Please refer to Fig. 2 and Fig. 3.Synoptic diagram when Fig. 2 is subjected to horizontal direction external force for index device 10 shown in Figure 1, its center line are represented the crooked direction in the stressed back of the body of rod.Synoptic diagram when Fig. 3 is subjected to vertical direction external force for index device 10 shown in Figure 1, its center line is represented the stressed direction of the body of rod.When the user presses rubber lid 21, cap 20 is because of the external force effect push-and-pull body of rod 12, make the body of rod 12 generation flexural deformations and make bar shaped strainometer 22 pressure sensors, and circle ring 28 can be assisted that the body of rod 12 is produced flexural deformation and be made bar shaped strainometer 22 pressure sensors via the transmission of fixing glue 26, therefore makes bar shaped strainometer 22 produce corresponding sensing signal.Wherein, when the body of rod 12 because of being subjected to horizontal force (F
x, F
y) effect and bending, bar shaped strainometer 22 can produce bending strain signal (Bending strain signal) S
X1, S
Y1When the body of rod 12 because of being subjected to vertical force (F
z) effect and compress, bar shaped strainometer 22 can produce pressure-strain signal (Compressive strain signal) S
Z1
Cap 20 inboards of existing index device 10 are a uniform cylindrical groove 23, and the body of rod corresponding with it 12 top peripheral part 15 also are even cylindricality.When the cap 20 of index device 10 was subjected to user institute externally applied forces, bar shaped strainometer 22 only can be because of X-direction, Y-direction externally applied forces F because of being subjected to the extruding of substrate 30, circle ring 28 and fixing glue 26
x, F
yAnd produce corresponding two-dimentional strain signal (Strain signal) S
X1, S
Y1Because of Z-direction externally applied forces F
zAnd produce corresponding third dimension strain signal S
Z1Because of too faint being difficult for is utilized.And it is very limited because of external force bending stress that effect produces (Bending Stress) only to rely on the body of rod 12 itself, so the sensitivity of X-direction, Y-direction strain signal has to be strengthened.During this external assembling index device 10, the formality of carrying out a glue and installing circle ring 28 rather bothers, and this is the shortcoming of existing index device 10.
The objective of the invention is to propose a kind ofly can increase X, Y, and the index device of the strain signal sensitivity of Z direction, and the pressure of sensing cap delicately is to improve above-mentioned shortcoming.
The object of the present invention is achieved like this, and a kind of index device promptly is provided, and it includes: a substrate; One body of rod, it includes a top, one top peripheral part is positioned under this top, an and bottom, this body of rod vertically extends on this substrate, top peripheral part of this body of rod is provided with at least one strainometer (Strain gauge), is used for the suffered pressure in this body of rod top of sensing and produce corresponding sensing signal; One cap, it is arranged on this body of rod, and it includes a top and a bottom, and this lower inside is provided with a cone tank, is used for top and top peripheral part of ccontaining this body of rod; And a base portion, it is peripheral and to this strainometer of small part to be covered in this body of rod, and the periphery of this base portion is pressed by this cone tank to small part and is touched; Wherein when impressed pressure put on this cap, the pressure on this cap can be oppressed this base portion by this cone tank of its underpart, thereby oppresses this strainometer, to increase the sensing sensitivity of this strainometer.
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail, wherein:
Fig. 1 is the cut-open view of existing index device;
Synoptic diagram when Fig. 2 is subjected to horizontal direction external force for index device shown in Figure 1;
Synoptic diagram when Fig. 3 is subjected to vertical direction external force for index device shown in Figure 1;
Fig. 4 is the cut-open view of index device of the present invention;
Synoptic diagram when Fig. 5 is subjected to horizontal direction external force for index device shown in Figure 4;
Synoptic diagram when Fig. 6 is subjected to vertical direction external force for index device shown in Figure 4.
See also Fig. 4.Fig. 4 is the cut-open view of index device 40 of the present invention.Index device 40 of the present invention comprises a substrate 60, a body of rod 42, a cap 50 and a base portion 56.Substrate 60 includes a hole 66.The body of rod 42 comprises that a top 45, a top peripheral part 47 are positioned under the top 45 and a bottom 49.The bottom 49 of the body of rod 42 is vertically to be fixed in the hole 66 of substrate 60.Cap 50 comprises a top 51 and a bottom 53, and 53 inboards, its underpart are provided with a cone tank 58 that launches downwards.The cone tank 58 of cap 50 is to be used for top 45 and top peripheral part 47 of the ccontaining body of rod, and cap 50 can do the operation of slightly moving or rotating in the top 45 of the body of rod, and the gap 41 that the top of cap 50 and the body of rod is 45 is used to provide cap 50 and the body of rod 42 as the required space of aforesaid operations.Can install a rubber cap (Rubber cup) (not shown) on the cap 50 so that the pressing of user.
Base portion 56 is the pyramidal structure of a ring-type, and it is fixed in bottom 49 and peripheral part 47 of the body of rod 42 by fixing glue 68, and its peripheral taper surface cooperates with the cone tank 58 of cap 50, not hinder the operation of cap 50 and 42 relative motions of the body of rod.Base portion 56 can be binder and constitutes, for example plastic cement etc.; Base portion 56 also can directly irritate molded in bottom 49 and peripheral part 47 of the body of rod 42 by epoxy resin (Epoxy), and then can omit fixing glue 68 this moment.
The xsect of top peripheral part 47 of the body of rod is a squarish, all vertically is provided with a bar shaped strainometer 52 on four sides in the body of rod 42 stage casings, be used for the sensing body of rod 42 on four faces pressure and produce corresponding sensing signal.The top of these strainometers 52 all extends to top peripheral part 47 of the body of rod and is covered by base portion 56, makes the top of strainometer 52 be easy to experience the pressure that cap 50 is transmitted.
Substrate 60 can be a printed circuit board (PCB), and substrate 60 is provided with many wiring (Trace) 62.The bottom of a plurality of bar shaped strainometers 52 is provided with many terminals (Lead) (not shown).Many terminals are to be electrically connected to many wiring 62 in the mode of welding respectively, so that the sensing signal that bar shaped strainometer 52 is produced is reached substrate 60.
The direction that index device 40 of the present invention is subjected to the external force effect comprises horizontal direction and vertical direction.Sign X among Fig. 4 and the arrow of Y are represented two horizontal directions, and the arrow that indicates Z is represented vertical direction.It is can be used to control on the computer display screen the vernier (not shown) X-, Y-, and the three-dimensional of Z-direction move, perhaps vernier reaches " execution " or " moving " etc. in " location " of Z-direction.
See also Fig. 5, the synoptic diagram when Fig. 5 is subjected to horizontal direction external force for index device 40 shown in Figure 4, its center line are represented the crooked direction in the stressed back of the body of rod.Be subjected to the external force (F of horizontal direction (X-direction, Y-direction) when index device 40
x, F
y) do the time spent, the body of rod 42 is because of being subjected to F
x, F
yAct on and bending, make the bar shaped strainometer 52 that is arranged on the body of rod 12 produce bending strain signal S
X1, S
Y1, and because of the existence in gap 41 makes cap 50 slightly rotate an angle, and the positive force (R that cone tank 58 is produced perpendicular to strainometer 52 surfaces via base portion 56
x, R
y), and R
x, R
yExtruding bar shaped strainometer 52 makes it produce strain signal S
X2, S
Y2Therefore, to make the strain signal that the time spent can produce in the horizontal direction be S to index device 40 being subjected to external force
X1+ S
X2, S
Y1+ S
Y2, the sensitivity of horizontal direction is greatly improved.
See also Fig. 6, the synoptic diagram when Fig. 6 is subjected to vertical direction external force for index device 40 shown in Figure 4, its center line is represented the stressed direction of the body of rod.Be subjected to the external force (F of vertical direction (Z-direction) when index device 40
z) do the time spent, the body of rod 42 is because of being subjected to F
zEffect and compressing makes the bar shaped strainometer that is arranged on the body of rod 42 52 produce pressure-strain signal S
Z1, and slightly move the positive force R that a segment distance makes cone tank 58 produce perpendicular to bar shaped strainometer 52 surfaces via base portion 56 because of the existence in gap 41 makes cap 50 be able to be directed downwards towards Z-
z, and positive force R
zExtruding bar shaped strainometer 52 makes it produce strain signal S
Z2Therefore, to make the strain signal that the time spent can produce in vertical direction in the external force that is subjected to the Z-direction be S to index device 40
Z1+ S
Z2, the sensitivity of vertical direction is greatly improved.Because the sensitivity of vertical direction increases, so its signal intensity can be utilized to produce corresponding sensing signal completely and reach " execution " with the control vernier in " location " of Z-direction, can be used for controlling vernier " moving " in the Z-direction.
Index device 40 of the present invention can increase X-, Y-, reach the sensitivity of Z-direction, thereby the three-dimensional sensing signal of generation " moves " with the three-dimensional of controlling vernier.Perhaps, also can use the third dimension sensing signal that index device 40 is produced, control " moving ", " location " and " execution " of Z-direction, and do not need other pressing keys to assist its " location " to reach the function of " execution ".In addition, when directly with epoxy resin (Epoxy) base portion 5 being irritated molded, index device 40 does not need to install circle ring 28, and element is less, and structure is simpler, therefore can save material cost, reduces some glue number of times, reach and simplify assembling process.In addition, the present invention is except that producing the sensing signal by the body of rod is crooked, more increase the sensing signal that is produced by strainometer surface positive pressure, therefore index device 40 can reduce whole height, be same as the sensitivity that has index device 10 now and reach, and then index device 40 is applied on the littler thinner device, for example ultra-thin laptop, hand held digital device (Palm digital appliance) etc.
Index device 40 of the present invention, remove aforementioned with base portion 56 cover the sub bar bodies top peripheral part 47 and between the cone tank 58 of the top of body of rod peripheral part 47 and cap, and outside the design that strainometer 52 is covered fully, the enforcement state that also can be designed to only to have the strainometer 52 of part to be covered for base portion 56; Perhaps base portion 56 does not extend to base plate 60, and the part that only covers top peripheral part 47 of the body of rod is implemented state; Below all can realize, when being subjected to external force, index device 40 does the time spent, except the crooked or compression of the body of rod 12 can be pressed the varying signal in generation, also have by cap 50 and slightly move or rotate the positive force that cone tank 58 is produced perpendicular to strainometer 52 via base portion 56, reach and improve strainometer 52, so can make the index device 40 of the present invention pressure that transmitted of sensing cap 50 delicately in the purpose of the sensitivity of X-, Y-and Z-strain signal that direction produces.
Above-described only is preferred embodiment of the present invention, and several equalizations of doing by claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (7)
1. index device, it includes:
One substrate;
One body of rod, it includes a top, one top peripheral part is positioned under this top, an and bottom, this body of rod vertically extends on this substrate, top peripheral part of this body of rod is provided with at least one strainometer (Strain gauge), is used for the suffered pressure in this body of rod top of sensing and produce corresponding sensing signal;
One cap, it is arranged on this body of rod, and it includes a top and a bottom, and this lower inside is provided with a cone tank, is used for top and top peripheral part of ccontaining this body of rod; And
One base portion is covered in peripheral this strainometer that reaches to small part of this body of rod, and the periphery of this base portion is pressed by this cone tank to small part and touched;
Wherein when impressed pressure put on this cap, the pressure on this cap can be oppressed this base portion by this cone tank of its underpart, thereby oppresses this strainometer, to increase the sensing sensitivity of this strainometer.
2. index device as claimed in claim 1, wherein the top of the inside bottom of this cap and the body of rod keeps a preset distance, and this cap can be moved above this body of rod or rotate.
3. index device as claimed in claim 1, wherein the xsect of this body of rod is square, is equipped with this strainometer on four sides of this body of rod, is used for the suffered pressure in this body of rod top of sensing and produce corresponding sensing signal.
4. index device as claimed in claim 1, wherein this base portion is an annular cone structure.
5. index device as claimed in claim 4, wherein this base portion is made of epoxy resin (Epoxy).
6. index device as claimed in claim 1, wherein this substrate is provided with many wiring, and is electrically connected to this a plurality of bar shaped strainometers, so that the sensing signal that these a plurality of bar shaped strainometers are produced is reached this substrate.
7. index device as claimed in claim 6, wherein this substrate is a printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99123341A CN1116637C (en) | 1999-10-22 | 1999-10-22 | Indicator able to sense roof pressure sensitively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99123341A CN1116637C (en) | 1999-10-22 | 1999-10-22 | Indicator able to sense roof pressure sensitively |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1294292A CN1294292A (en) | 2001-05-09 |
| CN1116637C true CN1116637C (en) | 2003-07-30 |
Family
ID=5282864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99123341A Expired - Fee Related CN1116637C (en) | 1999-10-22 | 1999-10-22 | Indicator able to sense roof pressure sensitively |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1116637C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541151C (en) * | 2008-02-29 | 2009-09-16 | 合肥工业大学 | Touch sensor based on flexible pressure-sensitive conductive rubber |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943618B (en) * | 2009-07-09 | 2012-08-22 | 义隆电子股份有限公司 | Stress inductor and assembly method thereof |
| CN105731204A (en) * | 2016-03-24 | 2016-07-06 | 周玉红 | Stress sensor for vertical elevator |
| CN108145310A (en) * | 2016-12-06 | 2018-06-12 | 致伸科技股份有限公司 | The method of assemblying keyboard |
-
1999
- 1999-10-22 CN CN99123341A patent/CN1116637C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541151C (en) * | 2008-02-29 | 2009-09-16 | 合肥工业大学 | Touch sensor based on flexible pressure-sensitive conductive rubber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1294292A (en) | 2001-05-09 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| BB1A | Publication of application | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030730 Termination date: 20091123 |