CN102052933B - Measurement device equipped with reed switch - Google Patents
Measurement device equipped with reed switch Download PDFInfo
- Publication number
- CN102052933B CN102052933B CN201010522975.2A CN201010522975A CN102052933B CN 102052933 B CN102052933 B CN 102052933B CN 201010522975 A CN201010522975 A CN 201010522975A CN 102052933 B CN102052933 B CN 102052933B
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- measurement mechanism
- reed switch
- pointer
- supporting member
- mechanism according
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
- G01D5/252—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels
- G01D5/2525—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels with magnetically controlled switches, e.g. by movement of a magnet
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
- G01D13/22—Pointers, e.g. settable pointer
- G01D13/26—Pointers, e.g. settable pointer adapted to perform a further operation, e.g. making electrical contact
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a measurement device for measuring and recording physicalistic values, which comprises a measuring element for measuring values, a pointer mechanism rotating a pointer with respect to the motion of the measuring element. The pointer rotates around a pointer rotation axis in a pointer plane. The pointer is equipped with switching magnets, a first and a second carrier components. The first and the second carrier components are adjusted around the axis in a rotary manner. A plane parallel to the pointer plane lies in the rotation axis. The carrier components are provided with two bistable reed switches, which are actuated by switching magnets. A longitudinal axis of one of the reed switches does not run through the pointer rotation axis.
Description
Technical field
The present invention relates to a kind of measurement mechanism, such as, for detecting and evaluation physical values, pressure, particularly a kind of measurement mechanism with the bistable state reed switch that at least one can rotate around the turning axle of pointer, adjusts, power supply is suitable for.
Background technology
Reed switch is made up of the contact tongue of two permanent magnetic materials in principle, and they are airtight under an inert atmosphere fuses in glass tube or this base part.Contact tongue glass tube internal superposition and in its contact region, form gap.Two contact tongues adopt contact material coating usually in contact region, wherein, contact tongue in enough strong magnetic field close to time produce and attract, closed contact thus.The major advantage of reed switch is favourable manufacturing cost, do not need to power, can use under the environment of explosion danger, non-contact type operation and several hundred million switch cycles, long serviceable life.
The patent No. is that the United States Patent (USP) of US 3 683 135 describes common reed switch by a kind of device for pressure measurement, the i.e. example of non-bi-stable reed switch application, this device for pressure measurement has dial in addition and has the pointer of permanent magnet, for the pressure that simulative display will be measured.For configuration switch point, such as, as minimum or maximum measurement range (end) value, have two poles can reversed around pointer turning axle, they have the reed switch (normally opened contact) can handled by the permanent magnet of pointer separately.Pointer and pole and the reed switch be fixed on separately on this pole are arranged coaxially to each other, and wherein, the axis of reed switch is through the distribution of pointer turning axle.If the permanent magnet be arranged on pointer skims over the reed switch normally opened, the switch tongue of the reed switch be so connected with weak mains will close, and send corresponding current signal to circuit or relay.This circuit is generally for controlling the load circuit such as pump or the operation of similar electric device.
In the US patent documentation introduced above, on device for pressure measurement, usually use the reed switch of minor structure size (namely adopting little vitreum length), to reduce the structure space taken in device for pressure measurement.Power supply is suitable for the reed switch that can bear larger switching current, its contact tongue is quite large, therefore needs larger installing space.If the mode introduced for the United States Patent (USP) of US 3 683 135 with the patent No. uses the reed switch of this big current, so produced problem is, reed switch and holding device hinder mutually or the width of adjustable measurement range diminishes.
Summary of the invention
Therefore object of the present invention is, provides a kind of measurement mechanism, and this measurement mechanism can according to plain mode directly switch load-current in large measured value range.This object is achieved by a kind of measurement mechanism with following characteristics according to the present invention:
For measuring the measurement mechanism with evaluation physical values, comprising:
For detecting the measuring sensor of physical values, wherein, the described measuring sensor corresponding sports of described physical values,
Point gear, it is by corresponding with the motion of described measuring sensor for pointer in pointer plane, and described pointer is rotated around pointer turning axle, and wherein, described pointer has switching magnet, and
First and second supporting members, it can rotate around described pointer turning axle, and adjustment is also in separately with in the parallel plane plane of described pointer, and have the bistable reed switch can handled by described switching magnet separately,
Wherein, the longitudinal axis of reed switch described at least one does not distribute through described pointer turning axle on described measurement mechanism.According to the present invention, for measuring the measuring sensor had with the measurement mechanism of evaluation physical values for detecting physical values, wherein, the measuring sensor of such as tubular type spring or this type of spring and the change corresponding sports of physical values, that is, the change of physical values converts detectable motion to.In addition, measurement mechanism has point gear, and it is by corresponding with the motion of measuring sensor for pointer in pointer plane, and pointer is rotated around pointer turning axle, and wherein, pointer has switching magnet.In addition, measurement mechanism has the first and second supporting members, it can rotate with measuring sensor, point gear or pointer are irrelevant, and can rotate around the turning axle of pointer, adjustment.Supporting member is in pointer in parallel plane plane, and has bistable state reed switch separately.Each reed switch can be handled by switching magnet, and wherein, the longitudinal axis of at least one reed switch does not distribute through pointer turning axle on measurement mechanism.
For handling reed switch, switching magnet has to pass through respective reed switch in the switch distance determined.Therefore switch distance is the ultimate range between switching magnet and reed switch, can pass through its magnetic force robust manipulation reed switch at this apart from interior switching magnet.In bistable reed switch, generally permanent magnet is fixed on outer cover, and on the vitreum of namely reed switch, it acts on the switch tongue of reed switch, and by pre-tensioner for its magnetic, namely can hold it on corresponding position.This means, even when the switching magnet handled has exceeded reed switch distance (being greater than switch distance), what keep reed switch has been switched on or switched off state, namely keeps bistable state.
Therefore, the bistable state reed switch according to measurement mechanism of the present invention preferably has a pre-magnet separately, for the respective switch tongue of respective reed switch is remained on the predetermined position of the switch.This means, the switching magnet that pointer has is through out-of-date, corresponding switch tongue moves to the position of the switch determined, the such as closed position of the switch, in this position, by opening permanent magnet in advance, switch tongue is remained on this position, until a pre-magnet passes through and the position of the switch of corresponding change switch tongue from reed switch is other again.
If supporting member occupies separately and maximumly each other outer moves pivotal terminal location, that is, if supporting member is on maximum open position, and therefore specify the measurement range of maximum possible between two reed switchs, so at least one reed switch is from pointer turning axle, radial direction is preferably disposed on after another reed switch.Therefore two reed switchs set gradually along pointer turning axle or are arranged in series in the front elevation of measurement mechanism.
In addition it is contemplated that, the longitudinal axis of two reed switchs does not distribute through pointer turning axle, and therefore not tangent with pointer turning axle.According in measurement mechanism of the present invention, the longitudinal axis of the first reed switch is preferably less than the distance of the second reed switch to pointer turning axle to the distance of pointer turning axle.Therefore, if supporting member occupies separately and maximumly each other outer moves pivotal terminal location, namely launch the measurement range of maximum possible, the second reed switch is preferably disposed on after the first reed switch from pointer turning axle radial direction.
Therefore, the distance of the first reed switch magnetic sensitive area and the second reed switch magnetic sensitive volume cans be compared to the switch distance of the maximum possible between switching magnet and the magnetic sensitive area of one of them reed switch most.
In addition the supporting member preferred structure according to measurement mechanism of the present invention is identical.Measurement mechanism uses, these supporting members preferably each other minute surface arrange on the contrary, and to be rotatablely bearing on pointer turning axle, thus supporting member can adjust toward each other around this pointer turning axle.
In addition have dial according to measurement mechanism of the present invention, pointer shows physical values by measured value on this dial.Therefore, best mounting and adjusting part on each supporting member, such as, as the moving member above with pointer, it can stop on the diverse location of dial excircle, and provide the switch measured value of corresponding adjustment.In addition between each supporting member and dial, the connection of force closure is produced by moving member and consequent necessity rubs.In addition it is contemplated that, therefore consistent with the switching hysteresis of reed switch on each supporting member, selectively for the pressure risen or decline has fixing abut, moving member can stop on these abuts.Each supporting member can rotatablely relative to dial be fixed on the axle sleeve that passed by needle pivot in addition.Therefore, such as, be fixed on and on two positions, carry dial as the holding plate on the spring suppport of the tubular type spring of measuring sensor, and the foregoing axle sleeve of this external support.
According on measurement mechanism of the present invention, arc angle minimum between two reed switchs is 10 °, and being equivalent to can the switching range of minimum adjustment.Arc angle maximum between two reed switchs is preferably 220 ° in addition, and being equivalent to can the switching range of maximum adjustment.Therefore adjustable switching range comprises the index dial final value of 10-90%.This means, on the index dial of 0-100 measuring unit, maximum adjustable switching range such as comprises at least 10 measuring units and Gao90Ge measuring unit.Therefore, switching point can certainly be on index dial end, such as, in the measuring unit of 0 or 100.
In addition, reed switch can carry out switch as the total head switch between two of a switching magnet pole, and has the magnetic sensitivity of 40-45 or 45-50 ampere-turn (AW), and this point is equivalent to low AW value, and is therefore equivalent to high magnetic sensitivity.Therefore utilize quite weak magnetic field just can reed switch on operating basis measurement mechanism of the present invention.
Other objects, advantage and viewpoint are from the explanation of dependent claims, embodiment and accompanying drawing.
Accompanying drawing explanation
By the embodiment of accompanying drawing, the present invention is described in detail below.Wherein:
Fig. 1 illustrates the exploded view of the preferred embodiment according to measurement mechanism of the present invention, wherein, with detail drawing, the setting that switching magnet is relevant to pointer is shown;
Fig. 2 illustrates the supporting member of foundation preferred embodiment measurement mechanism and the enlarged drawing of circuit board and reed switch; And
Fig. 3 A is in the maximum outer supporting member comprising circuit board and reed switch shown in Fig. 2 moved on pivotal terminal location each other under assembled state is shown; And
Fig. 3 B illustrates the rear view arranged shown in Fig. 3 A.
Embodiment
Fig. 1 exploded view illustrates the preferred embodiment according to measurement mechanism of the present invention, and measurement mechanism shell 1 is shown in addition.The main body 11 of measurement mechanism shell 1 has can-like shape, and cable box or cablehead 12 are fixedly mounted on the side of main body 11, and wherein, leader cable bundle 13 is from cablehead 12 out directed outward.The spring suppport 3 of the tubular type spring (not shown) as measuring sensor is shown in addition, and it is arranged in the cylinder body 11 of measurement mechanism shell 1 in the assembled state.Spring suppport 3 has process connecting line on its bottom surface, and has point gear 2 in the above.The web member 21 of point gear 2 is directly connected with the free end of measuring sensor (not shown) in the assembled state, pointer 8 display measurement value on dial 6 of point gear 2.Holding plate 31 installed by this external spring suppport 3, and holding plate 31 upper end has the lug boss 32 being with through circular void, and in the assembled state, axle sleeve 7 to be bearing in this space and to fix by relieving ring 33.At the cylindrical pin 35 of lower end projection two of holding plate 31, above fixed number letter disk 6 simultaneously using as the mechanical stop of the first and second supporting members 41,42.
Structure is identical and by pre-magnet 512,522 pre-tensioner thus the first supporting member 41 be fixed on by bistable state reed switch 511,521 on respective circuit board 51,52 (or printing board PCB) and the second supporting member 42 are overlapping on the turning axle of pointer 8 respective on it.In addition, supporting member 41,42 by being used as the rotatable setting of volute spring 34 of stage clip, and is on the lug boss 32 of spring suppport 3 by relieving ring 33.Dial 6, supporting member 41,42 comprise circuit board 51,52 and reed switch 511,521, are interconnected through stage clip 34 and axial relief ring 33 by axle sleeve 7.Volute spring 34 produces gapless near axle in this case and supports the snap-in force needed for foregoing parts.In addition by the pin 35 fixed number letter disk 6 through the hole 61 of dial 6.First reed switch 511 can enter in required position by rotating the first supporting member 41 around pointer turning axle, and the second reed switch 521 then can be similar, entered in required position by rotation supporting part 42.This means, by first circuit board 51, the first reed switch 511 be fixed on the first supporting member 41 can enter by the rotatable supporting member 41 be fixed on holding plate 31 position determined around pointer turning axle.Similar, by second circuit board 52, the second reed switch 521 be fixed on the second supporting member 42 can enter by the rotatable supporting member 42 be fixed on holding plate 31 position determined around pointer turning axle.In the front elevation of measurement mechanism dial 6, the first supporting member 41 is relevant to pointer turning axle, is arranged on after the second supporting member 42.
The excircle of each supporting member 41,42 installs the moving member 411,421 that has ratings pointer functionality separately, it along dial 6 and the determining section moving in stepless way along respective supporting member 41,42 excircle, and can show by measurement range (end) value required by the adjustment of respective reed switch 511,521 on dial 6.In addition, corresponding supporting member 41,42 is connected with dial 6 force closure by each moving member 411,421, to prevent supporting member 41,42, undesirable movement occurs.Below each moving member 411,421, in each supporting member 41,42, there is cylindrical space 417,427, under the assembled state of measurement mechanism, when needing, the rubber parts as friction brake (not shown) is loaded in this space, for preventing respective supporting member 41,42 slippage relative to dial 6 or supporting member 41,42 slippage each other.
In addition, have the view window (not shown) of glass or plastics according to measurement mechanism of the present invention, axes inside is to loading fixed pin (not shown).Adjustment arm (not shown) is fixedly connected with fixed pin, and user utilizes this adjustment arm in the radial direction of turning axle, to make moving member 411,421 move from the outside, and therefore makes reed switch 511,521 move.
As seeing in the detail drawing of Fig. 1, under the assembled state of measurement mechanism, the pointer 8 at the tip of pointer 8, in this end section 81 had, arranges the magnetization switching magnet 9 that is parallel to dial 6, for switch reed switch 511,521.Therefore switching magnet 9 such as can be bonded in end section 81, or according to other known connected modes, such as, is connected with it as clamping or similar fashion.
The concrete setting of parts of mounted thereto under supporting member 41,42 and assembled state, illustrates with the vertical view at the back side of measurement mechanism shown in Fig. 1, and illustrates in figures 3 a and 3b in the exploded view of Fig. 2.
Shown in middle Fig. 2,3A and 3B, overlapping on the rounded projections 412,422 that supporting member 41,42 has on each supporting member 41,42.Have hole in each lug boss 412,422, axle sleeve 7 passes this hole under the assembled state of measurement mechanism.Ensure that supporting member 41,42 can only rotate around with the pointer turning axle shown in imaginary point line thus.In addition, have tetragonal space 419,429 in each supporting member 41,42, the binding post 5131,5231 of connecting line 513,523 is placed in the inside, thus circuit board 51,52 can be made to be connected with leader cable bundle 13.Circuit board 51 keeps flat and is fixed on supporting member 41 under the assembled state of measurement mechanism, and wherein, the pin 414 that supporting member 41 has is pressed in hole 514 that circuit board 51 has.Similar, circuit board 52 is fixed on supporting member 42 under the assembled state of measurement mechanism, and wherein, the pin 424 that supporting member 42 has is pressed in hole 524 that circuit board 52 has.For such connection, such as, also can adopt ultrasound wave that plastic pin is softened or hot melt, thus form rivet type connection.Each circuit board 51,52 all has through space 515,525, according to their shape, can hold respective reed switch 511,521, wherein, reed switch conducts electricity with respective circuit board 51,52 and is connected.By the wire (not shown) that each circuit board 51,52 has, reed switch 511,521 conducts electricity with corresponding connecting line 513,523 and is connected.Carry out connecting line 513,523 by shaping pilot, flexible PCB or twisted wire (not shown) to be connected with the conduction between cablehead 12 or leader cable bundle 13.
As knowing in fig. 2 and finding out, the setting of reed switch 511 on supporting member 41 and reed switch 521 arranging on supporting member 42 is different, because circuit board 52 is arranged on supporting member 42 like this, make the position of reed switch 521 relevant to pointer turning axle, different from the position of reed switch 511.
Fig. 3 A and 3B illustrates that the parts shown in Fig. 2 are almost in that supporting member 41,42 is maximum each other outer to be moved on pivotal terminal location in the assembled state.The section 416 of a supporting member 41 is on this position, and part is in the gap 426 that consists of supporting member 42 and circuit board 52.
Can clearly be seen that in the view shown in Fig. 3 A and 3B, reed switch 511,521 is successively set on the maximum each other outer of supporting member 41,42 and moves on pivotal terminal location, that is, reed switch 511,521 part is overlapping near rotating on the tip of the axis separately.Reed switch 521, in this view from the turning axle of supporting member 41,42, radial direction is arranged on before reed switch 511, and wherein, the longitudinal axis of reed switch 511,521 is parallel to each other and therefore almost launch the measurement range of a maximum possible.Also the magnetic sensitive volume of one of reed switch 511,521 that can be placed in corresponding reed switch center separately, no matter be the distance with another reed switch 511,521 magnetic sensitive volume, or with the distance of the pre-magnet 512,522 of another reed switch 511,521, all than one of switching magnet 9 and reed switch 511,521 magnetic sensitive volume between the switch distance of maximum possible.
Fig. 3 B illustrates the rear view arranged shown in Fig. 3 A.On each supporting member 41,42, be arranged near space 418,428 for the right cylinder space 417,427 loading rubber parts (not shown) under the assembled state of measurement mechanism, under the assembled state of measurement mechanism, guide moving member.Binding post 5131,5231 that be connected with leader cable bundle 13 for circuit board 51,52, that be arranged on the connecting line 513,523 on respective circuit board 51,52, be arranged in corresponding space 419,429 in the assembled state, to ensure that supporting member 41,42 plane is placed on the back side of dial 6.
The present invention is not limited to the embodiment of aforementioned list.This embodiment can be modified in the right below.
Except using on tensimeter, before the structure introduced also it is contemplated that other application possibilities.The structure of the reed switch such as used on measurement mechanism can use on other any measurement mechanisms imagined with simulative display.Pointer member can equip a permanent magnet and two reed switchs completely, can rotate be on introduced supporting member around needle pivot.
Claims (19)
1., for measuring the measurement mechanism with evaluation physical values, comprising:
For detecting the measuring sensor of physical values, wherein, the change corresponding sports of described measuring sensor and described physical values,
Point gear (2), it in pointer plane, makes described pointer rotate around pointer turning axle, wherein by corresponding with the motion of described measuring sensor for pointer (8), described pointer (8) has switching magnet (9), and
First and second supporting members (41,42), it can rotate around described pointer turning axle, adjustment is also in in the parallel plane plane of described pointer separately, and there is bistable reed switch (511,521) separately that can be handled by described switching magnet (9)
Wherein, the longitudinal axis of reed switch described at least one (511,521) does not distribute through described pointer turning axle on described measurement mechanism; And
Wherein, from described pointer turning axle, if described supporting member (41,42) occupies separately and maximumly each other outer moves pivotal terminal location, reed switch described in one of them (511) radial direction is arranged on after reed switch described in another (521).
2. by measurement mechanism according to claim 1, wherein, the longitudinal axis of two described reed switchs (511,521) is not through described pointer turning axle distribution.
3. by measurement mechanism according to claim 2, wherein, the longitudinal axis of the first reed switch (511) is less than the distance of the second reed switch (521) to described pointer turning axle to the distance of described pointer turning axle.
4. by measurement mechanism according to claim 3, wherein, if described supporting member (41,42) occupies separately and maximumly each other outer moves pivotal terminal location, described second reed switch (521), from described pointer turning axle, radial direction is arranged on after described first reed switch (511).
5. by measurement mechanism according to claim 4, wherein, distance between the magnetic sensitive area of described first reed switch (511) and described second reed switch (521), than one of described switching magnet (9) and described reed switch (511,521) magnetic sensitive area between the switch distance of maximum possible.
6., by the measurement mechanism in aforementioned claim described in any one, wherein, described supporting member (41,42) has identical structure.
7. press measurement mechanism according to claim 6, wherein, supporting member (41,42) is set to minute surface each other on the contrary also can be rotationally supported on described pointer turning axle.
8. by measurement mechanism according to claim 1, wherein, described measurement mechanism also has dial (6), for being provided the measured value of physical values by described pointer (8) display.
9. by measurement mechanism according to claim 8, wherein, each described supporting member (41,42) has adjustment part (411,421), it can adjust relative to respective described supporting member (41,42), to show adjusted respective switch measured value on described dial (6) external diameter.
10. by measurement mechanism according to claim 9, wherein, each described supporting member (41,42) is upper consistent with the switching hysteresis of described reed switch, selectively for the pressure risen or decline has fixing abut.
11. by the measurement mechanism described in aforementioned claim 9 or 10, wherein, the described adjustment part (411,421) each described supporting member (41,42) had produces snap-in force between respective described supporting member (41,42) and described dial (6).
12. by the measurement mechanism in claim 8-10 described in any one, wherein, each described supporting member (41,42) can rotate fixing by pass through the axle sleeve (7) of described pointer turning axle relative to described dial (6).
13. by measurement mechanism according to claim 12, and wherein, holding plate (31) carries described dial (6) and supports described axle sleeve (7) on two positions.
14. by measurement mechanism according to claim 1, and wherein, between two described reed switchs (511,521), minimum arc angle is 10 °, is equivalent to adjustable minimum switching range.
15. by measurement mechanism according to claim 1, and wherein, between two described reed switchs (511,521), maximum arc angle is 220 °, is equivalent to adjustable maximum switching range.
16. by measurement mechanism according to claim 1, and wherein, adjustable switching range comprises the index dial final value of 10 – 90%.
17. by measurement mechanism according to claim 1, and wherein, the magnetic sensitivity of described reed switch (511,521) is 40 – 45 or 45 – 50 ampere-turns, and can carry out switch as the total head switch between two of a described switching magnet pole.
18. by measurement mechanism according to claim 1, wherein, bistable described reed switch (511,521) has a pre-permanent magnet (512,522) separately, for the respective switch tongue of respective described reed switch (511,521) is remained on the predetermined position of the switch.
19. by measurement mechanism according to claim 1, and wherein, described reed switch (511,521) possesses the ability for Power Management Design.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009046173.6 | 2009-10-29 | ||
| DE102009046173A DE102009046173A1 (en) | 2009-10-29 | 2009-10-29 | Device for measuring and evaluating physical variable i.e. pressure, has carrier components with reed switches, which are actuated by switching magnets, where longitudinal axis of one of switches does not run through pointer rotation axis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102052933A CN102052933A (en) | 2011-05-11 |
| CN102052933B true CN102052933B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010522975.2A Active CN102052933B (en) | 2009-10-29 | 2010-10-28 | Measurement device equipped with reed switch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102052933B (en) |
| DE (1) | DE102009046173A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016006771A1 (en) | 2015-08-24 | 2017-03-02 | Wika Alexander Wiegand Se & Co. Kg | Temperature compensated pressure gauge with switching output |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3527903A (en) * | 1968-07-15 | 1970-09-08 | Jack C Holland | Combination gauge switch |
| US3683135A (en) * | 1970-02-27 | 1972-08-08 | American Chain & Cable Co | Signaling mechanism for gauges |
| DE2518720A1 (en) * | 1975-04-26 | 1976-11-04 | Wiebrock & Hatting | Pointer mechanism for measuring instruments - with electrical switch for reliable and simple testing of operational readiness has rocking arm between two plates |
| EP0055131A1 (en) * | 1980-12-23 | 1982-06-30 | O'Dell, Raymond Joseph Albert | Improvements in or relating to measuring instruments |
| CN2238419Y (en) * | 1996-03-12 | 1996-10-23 | 山西省煤炭工业综合经营总公司 | Metering sensor for detecting gauge pointer movement |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7312835U (en) * | 1973-09-06 | Huger W Barometerfabrik | Device for displaying the falling or rising tendency of a measured value | |
| US2973414A (en) * | 1956-07-06 | 1961-02-28 | Toledo Scale Corp | Cutoff device for weighing scales |
| GB1103117A (en) * | 1964-01-01 | 1968-02-14 | Walter Douglass | Improvements relating to gauges |
| GB1043014A (en) * | 1964-08-10 | 1966-09-21 | Darenth Weighing Equipment Ltd | Improvements in weighing machines |
| GB1131305A (en) * | 1965-05-15 | 1968-10-23 | Parsons & Company Ltd S | Improvements in weighing apparatus |
| FR2454140A1 (en) * | 1979-03-14 | 1980-11-07 | Cleren Sa Ets | Preselector control for ingredient weights in cattle feed - can be fitted to dial of existing weighing machine |
| DE2913130A1 (en) * | 1979-04-02 | 1980-10-16 | Wiebrock & Hatting | Indicator mechanism for measurement instruments - is for interval switching and has two independently set demand value indicator shafts |
| FR2741569B1 (en) * | 1995-11-27 | 1998-10-30 | Malherbe Andre | DRIVING AID DEVICE |
-
2009
- 2009-10-29 DE DE102009046173A patent/DE102009046173A1/en active Pending
-
2010
- 2010-10-28 CN CN201010522975.2A patent/CN102052933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3527903A (en) * | 1968-07-15 | 1970-09-08 | Jack C Holland | Combination gauge switch |
| US3683135A (en) * | 1970-02-27 | 1972-08-08 | American Chain & Cable Co | Signaling mechanism for gauges |
| DE2518720A1 (en) * | 1975-04-26 | 1976-11-04 | Wiebrock & Hatting | Pointer mechanism for measuring instruments - with electrical switch for reliable and simple testing of operational readiness has rocking arm between two plates |
| EP0055131A1 (en) * | 1980-12-23 | 1982-06-30 | O'Dell, Raymond Joseph Albert | Improvements in or relating to measuring instruments |
| CN2238419Y (en) * | 1996-03-12 | 1996-10-23 | 山西省煤炭工业综合经营总公司 | Metering sensor for detecting gauge pointer movement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102052933A (en) | 2011-05-11 |
| DE102009046173A1 (en) | 2011-05-05 |
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