CN103089591B - Vacuumizing device used for keycap drawing force test - Google Patents
Vacuumizing device used for keycap drawing force test Download PDFInfo
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- CN103089591B CN103089591B CN201310007803.5A CN201310007803A CN103089591B CN 103089591 B CN103089591 B CN 103089591B CN 201310007803 A CN201310007803 A CN 201310007803A CN 103089591 B CN103089591 B CN 103089591B
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 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
- 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000008569 process Effects 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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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
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, particularly relate to a kind of keycap pulling capacity test vacuum pumping device.
Background technique
Slight keyboard comprises key plate and keycap, and key plate is provided with circuit structure and button, and keycap to be usually fastened on key plate by the buckle structure of corner and to be positioned at corresponding keys upwards; Due to the structural limitations of slight keyboard, buckle structure is comparatively small, therefore easily occurs that buckle is bad, and such as do not engage above, buckle dynamics is not enough, reacting in the overall structure of keyboard is that keycap does not flush, keycap from dropping, button are not smooth.Even avoid the buckle of keycap bad to reduce, need to be arranged on after on key plate at keycap, carry out pulling capacity test to keycap, namely use a certain size the power perpendicular to key plate to be pulled outwardly keycap, the buckle structure card of keycap corner still buckle well then represents that keycap buckle is good.
Now pulling capacity test is carried out to keycap and mainly contain two kinds of modes: one is carry out pulling capacity test by manually using finger to pull keycap singly to keycap, owing to being manual detection, and keycap quantity on keyboard is more, therefore easily there is undetected situation, be manually also difficult to ensure that the power applied each keycap is constant in addition; Two is adopt drawing force testing device to coordinate sucker suction key cap surface to apply certain pulling force to keycap by vacuum pump to carry out pulling capacity test, this detection mode uses electrified control can avoid undetected situation, also can keep very fixed in addition to the power that keycap applies.
Present drawing force testing device generally only comprises vacuum pump, shunt, sucker gas circuit and auxiliary support mechanism, wherein sucker gas circuit comprises check valve and sucker, the vacuum chamber end of vacuum pump is directly connected with shunt, then bled to sucker by check valve, and there are the following problems for this device:
(1) there is negative pressure state before activation in vacuum pump, when starting vacuum pump work, letting out negative pressure mechanism, can cause damage to vacuum pump, affect the working life of vacuum pump owing to not existing;
(2) the vacuum chamber space of vacuum pump is less, and the sucker gas circuit separated by shunt is more, once wherein a gas circuit leaks air, it is all very serious on the pressure impact in vacuum chamber, affects the normal work of other gas circuits;
(3) because sucker gas circuit carries out air-breathing work always, easily other impurity in air can be drawn in sucker gas circuit in the process of air-breathing, be difficult to cleaning;
(4) the power size that provides of all suckers is identical, because keycap varies, can not distinguish force.
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, sucker gas circuit can be stabilized to vacuum source is provided, two kinds of degree of vacuum can be provided simultaneously, meet different keycap and measure dynamics demand, fraction sucker blowby gas path can also be avoided in addition to the normal work influence 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:
Keycap pulling capacity test vacuum pumping device, comprise vacuum pump, point sized by the seal container of two cavity volumes, large cavity volume switching valve, little cavity volume switching valve and two vacuum on-off valves; Described vacuum pump vacuumizes large cavity volume through excessive cavity volume switching valve, vacuumize little cavity volume through too small cavity volume switching valve, and the intakeport of large cavity volume and little cavity volume is connected to a vacuum on-off valve.
Because the keycap of slight keyboard varies, therefore when testing, the power size applied is also different, by providing two kinds of different test force to the setting of the degree of vacuum in size two cavity volumes, can meet different keycap testing requirement by the setting of size two cavity volumes; In addition, the volume of size two cavity volumes is enough large, even if there is a small amount of sucker blowby gas path also can not affect the normal work of other sucker gas circuits like this.Bulk container or small container can be vacuumized selectivity by large cavity volume switching valve and little cavity volume switching valve, realize the flexibility controlling, adjust.Vacuum in seal container can be protected by the setting of vacuum on-off valve, avoid vacuum to waste.
Preferably, described large cavity volume switching valve and little cavity volume switching valve control vacuum pump and vacuumize the large cavity volume or little cavity volume that do not meet vacuum level requirements, when large cavity volume and little cavity volume do not meet vacuum level requirements simultaneously, control vacuum pump and first vacuumize bulk container.
Preferably, also comprise pressure-relief three-way valve, described vacuum pump connects the A end of pressure-relief three-way valve, the R termination air 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.Pressure-relief three-way valve is set up between vacuum pump and seal container; like this when starting vacuum pump work; the P end of first closed pressure-relief three-way valve; after holding the negative pressure in venting vacuum pump by the R of pressure-relief three-way valve; the R end of closed pressure-relief three-way valve opens the P end of pressure-relief three-way valve again; seal container is vacuumized, protection is served to vacuum pump.
Preferably, described vacuum pump is two, and described pressure-relief three-way valve is two, and two vacuum pumps connect the A end of two pressure-relief three-way valves respectively, the R termination air 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 efficiency vacuumized.
Preferably, also comprise two vacuum pressure switchs, the induction end of two vacuum pressure switchs is separately positioned in size two cavity volumes, and the control end of two vacuum pressure switchs is connected on the keying loop of vacuum pump.When the degree of vacuum of size cavity volume meets the demands, vacuum pressure switch controls vacuum air pump inoperative, when size cavity volume one of them or when both occurring that degree of vacuum does not meet the demands, corresponding vacuum pressure switch controls vacuum pump work and vacuumizes to corresponding cavity volume, avoid vacuum pump to work all the time, reduce vacuum pump loss.
Beneficial effect: keycap pulling capacity test vacuum pumping device provided by the invention, sucker gas circuit can be stabilized to vacuum source is provided, two kinds of degree of vacuum can be provided simultaneously, meet different keycap and measure dynamics demand, fraction sucker blowby gas path can also be avoided in addition to the normal work influence of other sucker gas circuits.
Accompanying drawing explanation
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 a kind of keycap pulling capacity test vacuum pumping device, comprise vacuum pump, pressure-relief three-way valve, point sized by the seal container of two cavity volumes, 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 air 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 to a vacuum on-off valve; The induction end of described two vacuum pressure switchs is separately positioned in size two cavity volumes, 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 control vacuum pump and vacuumize the large cavity volume or little cavity volume that do not meet vacuum level requirements, when large cavity volume and little cavity volume do not meet vacuum level requirements simultaneously, control vacuum pump and first vacuumize bulk container.
Be illustrated in figure 2 a kind of embody rule 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 seal container divide sized by two cavity volumes.The connection of all parts as shown in the figure, two containers sized by seal container divides, the induction end of two vacuum pressure switchs is separately positioned in size two cavity volumes, 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 the A end of two pressure-relief three-way valves respectively, the R termination air 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: PZSE30-01-25-M type SMC vacuum digital pressure switch
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 control vacuum pump vacuumize the large cavity volume or little cavity volume that do not meet vacuum level requirements, when large cavity volume and little cavity volume do not meet vacuum level requirements simultaneously, control vacuum pump and first vacuumize bulk container; The induction end of described vacuum pressure switch is arranged in seal container, control end is connected on the keying loop of vacuum pump.
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, described standing part 1 is provided with the bleeder hole 3 at the intermediate recess place being communicated with absorbed portion 2, described bleeder hole 3 is the trapezium structure of back-off, and bleeder hole is communicated with check valve by gas circuit; Four bights, edge of described absorbed portion 2 adopt round-corner transition, and the meat at one week inside 1mm place, edge of absorbed portion 2 thick be 0.2 ~ 0.3mm; For ensureing that absorption evenly, preferably designing this sucker structure is symmetrical before and after arbitrary cross-sectional uniformity and symmetrical structure.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles 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. keycap pulling capacity test vacuum pumping device, is characterized in that: comprise vacuum pump, point sized by the seal container of two cavity volumes, large cavity volume switching valve, little cavity volume switching valve and two vacuum on-off valves; Described vacuum pump vacuumizes large cavity volume through excessive cavity volume switching valve, vacuumize little cavity volume through too small cavity volume switching valve, and the intakeport of large cavity volume and little cavity volume is connected to a vacuum on-off valve.
2. keycap pulling capacity test vacuum pumping device according to claim 1, it is characterized in that: described large cavity volume switching valve and little cavity volume switching valve control vacuum pump and vacuumize the large cavity volume or little cavity volume that do not meet vacuum level requirements, when large cavity volume and little cavity volume do not meet vacuum level requirements simultaneously, control vacuum pump and first bulk container is vacuumized.
3. keycap pulling capacity test vacuum pumping device according to claim 1, 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 air 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 test vacuum pumping device according to claim 3, it is characterized in that: described vacuum pump is two, described pressure-relief three-way valve is two, two vacuum pumps connect the A end of two pressure-relief three-way valves respectively, the R termination air 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 test vacuum pumping device according to claim 1, it is characterized in that: also comprise two vacuum pressure switchs, the induction end of two vacuum pressure switchs is separately positioned in size two cavity volumes, 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 CN103089591A (en) | 2013-05-08 |
| CN103089591B true CN103089591B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI309300B (en) * | 2006-06-19 | 2009-05-01 | Darfon Electronics Corp | Pulling testing mechanism |
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2013
- 2013-01-09 CN CN201310007803.5A patent/CN103089591B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| 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 |
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| CN103089591A (en) | 2013-05-08 |
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