CN103089591A - Vacuumizing device used for keycap drawing force test - Google Patents
Vacuumizing device used for keycap drawing force test Download PDFInfo
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- CN103089591A CN103089591A CN2013100078035A CN201310007803A CN103089591A CN 103089591 A CN103089591 A CN 103089591A CN 2013100078035 A CN2013100078035 A CN 2013100078035A CN 201310007803 A CN201310007803 A CN 201310007803A CN 103089591 A CN103089591 A CN 103089591A
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000005086 pumping Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a vacuumizing device used for keycap drawing force test. The vacuumizing device comprises a vacuum pump, a sealed container, a large-containing-cavity switching valve, a small-containing-cavity switching valve and two vacuum on-off valves, wherein the sealed container is divided into a large containing cavity and a small containing cavity; and the vacuum pump vacuumizes the large containing cavity through the large-containing-cavity switching valve and vacuumizes the small containing cavity through the small-containing-cavity switching valve, and air suction ports of the large containing cavity and the small containing cavity are respectively connected with one vacuum on-off valve. The vacuumizing device used for the keycap drawing force test can stably provides vacuum sources for sucking disc gas circuits, can simultaneously provide two vacuum degrees, meets different keycap measurement force requirements, and besides, also can prevent air leakage of a small number of the sucking disc gas circuits from influencing normal work of other sucking disc gas circuits.
Description
Technical field
The present invention relates to the keycap drawing force testing device of slight keyboard, relate in particular to a kind of keycap pulling capacity test vacuum pumping device.
Background technique
Slight keyboard comprises key plate and keycap, is provided with circuit structure and button on the key plate, and the keycap buckle structure by four jiaos usually is fastened on the key plate and is positioned at corresponding button top; Therefore due to the structural limitations of slight keyboard, buckle structure is comparatively small, buckle easily occurs bad,, buckle dynamics deficiency upper such as engaging not etc., and reaction is that keycap does not flush on the overall structure of keyboard, keycap from dropping, button are not smooth etc.Even avoid the buckle of keycap bad in order to reduce, need to be after keycap be arranged on the key plate, keycap is carried out the pulling capacity test, namely use a certain size the power perpendicular to the key plate to be pulled outwardly keycap, the buckle structure card that keycap is four jiaos still buckle represents that well the keycap buckle is good.
Now keycap is carried out the pulling capacity test and mainly contain dual mode: the one, pull singly keycap by artificial use finger keycap is carried out the pulling capacity test, owing to being manual detection, and the keycap quantity on keyboard is more, therefore undetected situation easily occurs, manually be difficult to also guarantee that the power that each keycap is applied is constant in addition; The 2nd, adopt drawing force testing device to coordinate sucker adsorption bond cap surface to apply certain pulling force to keycap by vacuum pump and carry out the pulling capacity test, this detection mode uses electrified control can avoid undetected situation, and the power that in addition keycap is applied also can keep very fixed.
Present drawing force testing device generally only comprises vacuum pump, shunt, sucker gas circuit and auxiliary support mechanism, wherein the sucker gas circuit comprises check valve and sucker, the vacuum chamber end of vacuum pump directly is connected with shunt, then by check valve, sucker is bled, and there are the following problems for this device:
(1) there is negative pressure state in vacuum pump before startup, when starting vacuum pump work, lets out negative pressure mechanism owing to not existing, and can to the vacuum pump injury, affect the working life of vacuum pump;
(2) the vacuum chamber space of vacuum pump is less, and the sucker gas circuit of telling by shunt is more, in case wherein a gas circuit leaks air, impact is all very serious on the pressure in vacuum chamber for it, affects the normal operation of other gas circuits;
(3) because the sucker gas circuit is carried out air-breathing work always, can easily airborne other impurity be drawn in the sucker gas circuit in air-breathing process, be difficult to cleaning;
(4) the power size that provides of all suckers is identical, because keycap varies, can not distinguish for power.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of keycap pulling capacity test vacuum pumping device, can stabilize to the sucker gas circuit vacuum source is provided, simultaneously can provide two kinds of degree of vacuum, satisfy different keycaps and measure the dynamics demand, can also avoid in addition fraction sucker blowby gas path on the normal operation impact of other sucker gas circuits.
Technological scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
Vacuum pumping device is used in the test of keycap pulling capacity, comprises vacuum pump, is divided into the seal container of two cavity volumes of size, large cavity volume switching valve, little cavity volume switching valve and two vacuum on-off valves; Described vacuum pump vacuumizes, through too small cavity volume switching valve, little cavity volume is vacuumized large cavity volume through excessive cavity volume switching valve, and the intakeport of large cavity volume and little cavity volume is connected with respectively a vacuum on-off valve.
Because the keycap of slight keyboard varies, therefore when test, the power size that applies is also different, and the setting by two cavity volumes of size can provide two kinds of different test force by the setting to the degree of vacuum in two cavity volumes of size, satisfies different keycap testing requirements; In addition, it is enough large that the volume of two cavity volumes of size is wanted, even there is so a small amount of sucker blowby gas path also can not affect the normal operation of other sucker gas circuits.Can bulk container or small container be vacuumized selectivity by large cavity volume switching valve and little cavity volume switching valve, realize the flexibility of controlling, adjusting.Setting by the vacuum on-off valve can be protected the vacuum in the seal container, avoids the vacuum waste.
Preferably, described large cavity volume switching valve and little cavity volume switching valve are controlled vacuum pump large cavity volume or the little cavity volume that does not satisfy degree of vacuum and require are vacuumized, and when large cavity volume and little cavity volume do not satisfy degree of vacuum simultaneously and require, control vacuum pump and at first bulk container are vacuumized.
Preferably, also comprise pressure-relief three-way valve, described vacuum pump connects the A end of pressure-relief three-way valve, the R termination atmosphere of pressure-relief three-way valve, the A end of the large cavity volume switching valve of P termination of pressure-relief three-way valve, the vacuum orifice of the large cavity volume of P termination of large cavity volume switching valve, the A end of the little cavity volume switching valve of R termination of large cavity volume switching valve, the vacuum orifice of the little cavity volume of P termination of little cavity volume switching valve, the R end of little cavity volume switching valve uses plug to block.Set up pressure-relief three-way valve between vacuum pump and seal container; like this when starting vacuum pump work; the P end of at first closed pressure-relief three-way valve; after the negative pressure in the R end venting vacuum pump of pressure-relief three-way valve; the R of closed pressure-relief three-way valve end is opened the P end of pressure-relief three-way valve again; the seal container is vacuumized, vacuum pump has been played protection.
Preferably, described vacuum pump is two, and described pressure-relief three-way valve is two, and two vacuum pumps connect respectively the A end of two pressure-relief three-way valves, the R termination atmosphere of two pressure-relief three-way valves, and the P end of two pressure-relief three-way valves converges the A end of the large cavity volume switching valve of rear access.Use two vacuum pumps can improve the efficient that vacuumizes.
Preferably, also comprise two vacuum pressure switchs, the induction end of two vacuum pressure switchs is separately positioned in two cavity volumes of size, and the control end of two vacuum pressure switchs is connected on the keying loop of vacuum pump.When the degree of vacuum of big or small cavity volume meets the demands, vacuum pressure switch is controlled the vacuum air pump inoperative, when big or small cavity volume one of them or two degree of vacuum occurs and do not meet the demands, corresponding vacuum pressure switch is controlled vacuum pump work and is vacuumized to corresponding cavity volume, avoid vacuum pump to work all the time, reduce the vacuum pump loss.
Beneficial effect: keycap pulling capacity test vacuum pumping device provided by the invention, can stabilize to the sucker gas circuit vacuum source is provided, simultaneously can provide two kinds of degree of vacuum, satisfy different keycaps and measure the dynamics demand, can also avoid in addition fraction sucker blowby gas path on the normal operation impact of other sucker gas circuits.
Description of drawings
Fig. 1 is a kind of basic structure schematic diagram of the present invention;
Fig. 2 is the structural representation of a kind of application example of the present invention;
Fig. 3 is the perspective view of square structure sucker;
Fig. 4 is the perspective view of rectangle structure sucker.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 as a kind of keycap pulling capacity test and use vacuum pumping device, comprise vacuum pump, pressure-relief three-way valve, be divided into the seal container of two cavity volumes of size, large cavity volume switching valve, little cavity volume switching valve, two vacuum on-off valves and two vacuum pressure switchs; Described vacuum pump connects the A end of pressure-relief three-way valve, the R termination atmosphere of pressure-relief three-way valve, the A end of the large cavity volume switching valve of P termination of pressure-relief three-way valve, the vacuum orifice of the large cavity volume of P termination of large cavity volume switching valve, the A end of the little cavity volume switching valve of R termination of large cavity volume switching valve, the vacuum orifice of the little cavity volume of P termination of little cavity volume switching valve, the R end of little cavity volume switching valve uses plug to block, and the intakeport of described large cavity volume and little cavity volume is connected with respectively a vacuum on-off valve; The induction end of described two vacuum pressure switchs is separately positioned in two cavity volumes of size, and the control end of two vacuum pressure switchs is connected on the keying loop of vacuum pump; Described large cavity volume switching valve and little cavity volume switching valve are controlled vacuum pump large cavity volume or the little cavity volume that does not satisfy degree of vacuum and require are vacuumized, and when large cavity volume and little cavity volume do not satisfy degree of vacuum simultaneously and require, control vacuum pump and at first bulk container are vacuumized.
Be illustrated in figure 2 as a kind of concrete application example of this case, comprise vacuum pump, pressure-relief three-way valve, seal container, vacuum on-off valve, shunt, some sucker gas circuits, vacuum pressure switch, air blowing cleaning agency and air blowing on-off valve, described sucker gas circuit comprises check valve and sucker; Wherein the seal container is divided into two cavity volumes of size.the connection of all parts as shown in the figure, the seal container is divided into two containers of size, the induction end of two vacuum pressure switchs is separately positioned in two cavity volumes of size, the control end of two vacuum pressure switchs is connected on the keying loop of vacuum pump, described vacuum pump is two, described pressure-relief three-way valve is two, two vacuum pumps connect respectively the A end of two pressure-relief three-way valves, the R termination atmosphere of two pressure-relief three-way valves, the P end of two pressure-relief three-way valves converges the A end of the large cavity volume switching valve of rear access, the vacuum orifice of the large cavity volume of P termination of large cavity volume switching valve, the A end of the little cavity volume switching valve of R termination of large cavity volume switching valve, the vacuum orifice of the little cavity volume of P termination of little cavity volume switching valve, the R end of little cavity volume switching valve uses plug to block, parts select model as follows:
Vacuum pump: JP-20H type vacuum pump
Pressure-relief three-way valve: VT317V-5C-02 type S MC three-way magnetic valve
Large cavity volume switching valve: VT325 type three-way magnetic valve
Little cavity volume switching valve: VT317 type three-way magnetic valve
Vacuum pressure switch: the digital pressure switch of PZSE30-01-25-M type SMC vacuum
Vacuum on-off valve: 2W-200-20-AC-5 type Jia Erling solenoid valve
Air blowing on-off valve: VT307-5G type three-way magnetic valve
Wherein large cavity volume switching valve and little cavity volume switching valve are controlled vacuum pump large cavity volume or the little cavity volume that does not satisfy degree of vacuum and require are vacuumized, and when large cavity volume and little cavity volume do not satisfy degree of vacuum simultaneously and require, control vacuum pump and at first bulk container are vacuumized; On the induction end of described vacuum pressure switch is arranged in the seal container, control end is connected to vacuum pump keying loop.
Described sucker comprises integrated standing part 1 and absorbed portion 2 as shown in Figure 3, Figure 4, described absorbed portion 2 is umbilicate rectangular disk structure, be provided with the bleeder hole 3 at the intermediate recess place that is communicated with absorbed portion 2 on described standing part 1, described bleeder hole 3 is the trapezium structure of back-off, and bleeder hole is communicated with check valve by gas circuit; Round-corner transition is adopted in four bights, the edge of described absorbed portion 2, and inwardly the meat at 1mm place is thick one week of edge of absorbed portion 2 is 0.2 ~ 0.3mm; For guaranteeing absorption evenly, preferably design this sucker structure and be symmetrical and symmetrical structure before and after arbitrary cross section is even.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. vacuum pumping device is used in the test of keycap pulling capacity, it is characterized in that: comprise vacuum pump, be divided into the seal container of two cavity volumes of size, large cavity volume switching valve, little cavity volume switching valve and two vacuum on-off valves; Described vacuum pump vacuumizes, through too small cavity volume switching valve, little cavity volume is vacuumized large cavity volume through excessive cavity volume switching valve, and the intakeport of large cavity volume and little cavity volume is connected with respectively a vacuum on-off valve.
2. keycap pulling capacity according to claim 1 is tested and is used vacuum pumping device, it is characterized in that: described large cavity volume switching valve and little cavity volume switching valve are controlled vacuum pump large cavity volume or the little cavity volume that does not satisfy the degree of vacuum requirement are vacuumized, when large cavity volume and little cavity volume do not satisfy degree of vacuum simultaneously and require, control vacuum pump and at first bulk container is vacuumized.
3. keycap pulling capacity according to claim 1 is tested and is used vacuum pumping device, it is characterized in that: also comprise pressure-relief three-way valve, described vacuum pump connects the A end of pressure-relief three-way valve, the R termination atmosphere of pressure-relief three-way valve, the A end of the large cavity volume switching valve of P termination of pressure-relief three-way valve, the vacuum orifice of the large cavity volume of P termination of large cavity volume switching valve, the A end of the little cavity volume switching valve of R termination of large cavity volume switching valve, the vacuum orifice of the little cavity volume of P termination of little cavity volume switching valve, the R end of little cavity volume switching valve uses plug to block.
4. keycap pulling capacity according to claim 3 is tested and is used vacuum pumping device, it is characterized in that: described vacuum pump is two, described pressure-relief three-way valve is two, two vacuum pumps connect respectively the A end of two pressure-relief three-way valves, the R termination atmosphere of two pressure-relief three-way valves, the P end of two pressure-relief three-way valves converges the A end of the large cavity volume switching valve of rear access.
5. keycap pulling capacity according to claim 1 is tested and is used vacuum pumping device, it is characterized in that: also comprise two vacuum pressure switchs, the induction end of two vacuum pressure switchs is separately positioned in two cavity volumes of size, and the control end of two vacuum pressure switchs is connected on the keying loop of vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007803.5A CN103089591B (en) | 2013-01-09 | 2013-01-09 | Vacuumizing device used for keycap drawing force test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007803.5A CN103089591B (en) | 2013-01-09 | 2013-01-09 | Vacuumizing device used for keycap drawing force test |
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| Publication Number | Publication Date |
|---|---|
| CN103089591A true CN103089591A (en) | 2013-05-08 |
| CN103089591B CN103089591B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310007803.5A Expired - Fee Related CN103089591B (en) | 2013-01-09 | 2013-01-09 | Vacuumizing device used for keycap drawing force test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235197A (en) * | 2017-04-26 | 2017-10-10 | 张家港市铭斯特光电科技有限公司 | One kind vacuumizes vacuum breaker method |
| CN114719520A (en) * | 2021-01-04 | 2022-07-08 | 海信容声(广东)冰箱有限公司 | Refrigerator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5391006A (en) * | 1993-08-20 | 1995-02-21 | Danziger; Paul | Snap on ergonomic keycaps |
| CN1959108A (en) * | 2005-11-02 | 2007-05-09 | 旺宏电子股份有限公司 | Vacuum suction device |
| US20070289299A1 (en) * | 2006-06-19 | 2007-12-20 | Darfon Electronics Corp. | Pull testing mechanism |
| CN201917515U (en) * | 2010-12-24 | 2011-08-03 | 群光电子(苏州)有限公司 | Device for detecting drawing force of keyboard and keycaps assembling |
| CN102728579A (en) * | 2011-04-02 | 2012-10-17 | 刘显余 | Novel blowing device |
| CN203067235U (en) * | 2013-01-09 | 2013-07-17 | 昆山鸿志犀自动化机电设备有限公司 | Vacuumizing device for testing keycap drawing force |
-
2013
- 2013-01-09 CN CN201310007803.5A patent/CN103089591B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5391006A (en) * | 1993-08-20 | 1995-02-21 | Danziger; Paul | Snap on ergonomic keycaps |
| CN1959108A (en) * | 2005-11-02 | 2007-05-09 | 旺宏电子股份有限公司 | Vacuum suction device |
| US20070289299A1 (en) * | 2006-06-19 | 2007-12-20 | Darfon Electronics Corp. | Pull testing mechanism |
| CN201917515U (en) * | 2010-12-24 | 2011-08-03 | 群光电子(苏州)有限公司 | Device for detecting drawing force of keyboard and keycaps assembling |
| CN102728579A (en) * | 2011-04-02 | 2012-10-17 | 刘显余 | Novel blowing device |
| CN203067235U (en) * | 2013-01-09 | 2013-07-17 | 昆山鸿志犀自动化机电设备有限公司 | Vacuumizing device for testing keycap drawing force |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235197A (en) * | 2017-04-26 | 2017-10-10 | 张家港市铭斯特光电科技有限公司 | One kind vacuumizes vacuum breaker method |
| CN107235197B (en) * | 2017-04-26 | 2019-05-10 | 张家港市铭斯特光电科技有限公司 | One kind vacuumizing vacuum breaker method |
| CN114719520A (en) * | 2021-01-04 | 2022-07-08 | 海信容声(广东)冰箱有限公司 | Refrigerator |
| CN114719520B (en) * | 2021-01-04 | 2024-03-22 | 海信容声(广东)冰箱有限公司 | Refrigerator with a refrigerator body |
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| CN103089591B (en) | 2015-07-01 |
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Granted publication date: 20150701 |