CN100533632C - Device for monitoring the level of a container - Google Patents
Device for monitoring the level of a container Download PDFInfo
- Publication number
- CN100533632C CN100533632C CNB200580009781XA CN200580009781A CN100533632C CN 100533632 C CN100533632 C CN 100533632C CN B200580009781X A CNB200580009781X A CN B200580009781XA CN 200580009781 A CN200580009781 A CN 200580009781A CN 100533632 C CN100533632 C CN 100533632C
- Authority
- CN
- China
- Prior art keywords
- buoy member
- buoy
- magnet
- recess
- boss
- Prior art date
- 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
Links
- 238000012544 monitoring process Methods 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 9
- 235000014676 Phragmites communis Nutrition 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Images
Abstract
The invention relates to a device for monitoring the level of a container of a compensation tank (1), more particularly a hydraulic motor vehicle braking system, comprising a float (3) that has a magnet (4) for actuating a switch (8) or a sensor. The invention is characterized in that the float (3) consists of several parts, namely a first float part (9, 11) and a second float part (10, 12) and the magnet (4) is encased between both float parts (9, 10, 11, 12).
Description
Technical field
The present invention relates to a kind of particularly device of the reservoir liquid level of motor vehicle hydraulic brake system that is used to monitor, this device comprises the buoy with the magnet that is used for actuation switch or transducer.
Background technology
Hold to some extent the brake fluid that needs in motor vehicle hydraulic brake system in the reservoir, wherein tank fill level is monitored by a magnet that is used to connect switch contact.If the liquid level of brake fluid descends, just switch contact is connected.This signal is handled in an electronic controller, and can report to the police to automobile driver by indicator light or the like.At this moment, must guarantee that reservoir adorns the brake fluid of irritating minimum all the time, so that do not influence the operation of brake apparatus.Usually adopt a kind of tank fill level monitoring device, wherein, when tank fill level was lower than the minimum value of qualification, in case buoy arrives preposition (cut-in point), buoy was just connected reed contact.Trigger the alarm signal that a driver can discover by connecting reed contact, to this, the driver can take suitable countermeasure.
For example DE3716135A1 discloses a kind of such device.This device comprises the buoy of a magnet carrier, and magnet design circularizes here, and moves into its installation site around the buoy medium pore by the radial slot on the buoy, and wherein the sidewall of otch is provided with magnet is fixed on retaining element on its installation site.
Shortcoming is that magnet may break when being damaged between manufacturing or installation period, and may deviate from from buoy.Can cause buoy stuck like this, thereby install malfunctioning.
Summary of the invention
Therefore, the objective of the invention is, a kind of device that better is used to monitor the reservoir liquid level is provided.
According to the present invention, this purpose realizes by such method, it is the multiple piece construction that buoy is designed to have first buoy member and second buoy member, magnet is installed between two buoy member with embedding, therefore, prevent that the magnet that breaks from deviating from from buoy, and buoy can not be stuck.
Embedding magnet can realize easily by such method, and promptly magnet is installed in the annular recess of first buoy member and second buoy member two buoy member assembling backs with embedding.
Preferably, therefore first buoy member and second buoy member can, can just can connect two buoy member without instrument by means of the mutual kayser of latch elements.
Another advantageous embodiment of the present invention is, first buoy member has a step through-hole, and second buoy member can be installed in this through hole by means of interference fit.Therefore two buoy member have a simple shape, and this shape can be made aspect processing technology economically.Preferably, magnet is installed in the annular recess of second buoy member, and this annular recess is covered by a step of first buoy member after two buoy member assemblings.
Another advantageous embodiment of the present invention is, first buoy member can be inserted in second buoy member, and magnet is installed in the annular recess on the second buoy member end face, and this annular recess is covered by the bottom surface of first buoy member two buoy member assembling backs.Thereby can assemble two buoy member easily without instrument.
Preferably, second buoy member has a radial recess, and first buoy member can be inserted in this radial recess, and the first buoy member sidewall is provided with boss, inserts in the radial recess of second buoy member by bootable first buoy member of this boss.
For two buoy member are kept together reliably, first and second buoy member are provided with and guarantee the reliable structure that connects of two buoy member, therefore, preferably, first buoy member has a boss on the bottom surface, this boss snaps in after the assembling of two buoy member in the recess on the second buoy member end face.Therefore buoy can manufacture precast segment, avoids single member to get loose when transportation.
Make by such method can to make things convenient for and make buoy economically that promptly two buoy member are configured to foamed plastic part.
Description of drawings
By means of description of drawings the present invention that embodiment is shown, accompanying drawing illustrates in the mode of simplifying greatly and part is analysed and observe below:
Fig. 1 has the longitudinal sectional view of reservoir that the device of tank fill level is monitored in known being used to;
Fig. 2 illustrates the buoy of first kind of embodiment of the device that is used to monitor liquid level of the present invention;
Fig. 3 illustrates the buoy of second kind of embodiment of the device that is used to monitor liquid level of the present invention.
Embodiment
Fig. 1 illustrate one comprise by known being used to of DE3716135A1 monitor tank fill level device, be used for the especially reservoir 1 of brake fluid of hydraulic fluid.Reservoir 1 for example is fixed on the master cylinder (not shown) of vehicle braking device, and be connected with a conduit 2, this conduit stretches into reservoir inside and seals in its end towards reservoir inside, makes for example annular buoy 3 and installs movably along the conduit 2 that preferably has circular cross-section.Buoy 3 has a toroidal magnet 4.One from bottom 5 upper process of reservoir 1, part is surrounded the backstop of the tubular holders 6 of conduit 2 as buoy 3 with one heart.This backstop limits the extreme lower position of buoy 3 in reservoir 1, and prevents that buoy 3 from leaving conduit 2.
In conduit 2, be provided with a support 7, be fixed with a reed switch 8 above the support at this.Be connected with a lug plate (Fahne) 21 on support 7, the longitudinal axis that this lug plate is parallel to conduit 2 extends, and stretches in the inside groove 13 of radially boss 14 of conduit 2.Conduit 2 is provided with a plurality of muscle 15 that stagger symmetrically and be provided with, and muscle 15 constitutes the last backstop of buoy 3.Conduit 2 is transformed into the bottom 16 of a flat cavity 17 in the top.The sidewall 18 of cavity 17 is connected with 20 with the wall 19 of reservoir 1.Sidewall 18 protrudes in the wall 19 and 20 1 fritters of reservoir 1, and the top edge 22 of sidewall 18 is configured for comprising the stop surface of the lid 23 of a flat underside 24, projection one plug connector housing 25 above flat underside 24, this plug connector housing 25 comprises a recess 26, two contact pins 27 or the blade type contact of plug connector are stretched in this recess, an end of plug connector airtightly or liquid thickly pack in the plug connector housing 25.Being connected with the end of lead 29 of each contact pin 27 with recess 26 opposing ends 28.The other end of lead 29 is connected on the reed switch 8.This lead 29 also can be arranged in the cable.
Wall and two boss 30 that for example be not higher than sidewall 18 that slightly continue the opposite side of groove 13 stretch in the cavity 17.Extend in the cavity of lug plate 21 between boss 30.The zone that is being positioned in plug connector housing 25 above the boss 30 is provided with a recess 31, when lid 23 enclosed cavities 17, the end of lug plate 21 can stretch in this recess, boss 30 stretches in this recess alternatively, reservoir 1 is made up of a top 32 and a bottom 33, and top 32 and bottom 33 are welded to one another at its 50 places, edge.
The known buoy 3 that is used to monitor the device of tank fill level is integral type, and has a radial groove, and toroidal magnet 4 is pressed in this radial groove, and wherein the sidewall of this radial groove is provided with and is used for magnet 4 is fixed on holding element on its installation site.
Fig. 2 illustrates the buoy 3 that is used to monitor first embodiment of the device of liquid level in the reservoir 1 of the present invention.As seen from Figure 2, buoy 3 has first buoy member 9 and second buoy member 10 that has central axial hole 34,35 respectively, here two buoy member 9,10 of explanation before assembling. Medium pore 34,35 is used for control point 3 and is installed in conduit 2.
Two buoy member 9,10 have annular recess 38,39 respectively inboard 36,37, and surround a common annular chamber at two buoy member, 9,10 latter two recesses 38,39 of assembling, one toroidal magnet 4 embeds in this annular chamber, that is we can say that magnet 4 is enclosed in the buoy 3.If magnet 4 is because manufacturing defect or break when mounted, packing can prevent that any part of magnet 4 from moving on in the reservoir 1 like this.
Two buoy member 9,10 have the latch elements 42 of one or more latch arm forms on the outside 40,41,9,10 o'clock latch elements of two buoy member of assembling by kayser in the recess 43 at edge 40,41.
Fig. 3 illustrates a buoy 3 according to second embodiment of the device that is used to monitor the liquid level in the reservoir 1 of the present invention.
As the buoy of first embodiment of Fig. 2, the buoy 3 of second embodiment also is designed to have the two-piece type of first buoy member 11 and second buoy member 12.
For the end face 47 that toroidal magnet 4, the second buoy member 12 are installed is provided with an annular recess 48.After two buoy member 11,12 assembling, end face 47 just be fitted in through hole 44 on the step 49 that forms between minimum diameter D1 and the intermediate diameters D2, by this applying magnet 4 is enclosed in the annular recess 48, that is magnet is embedded in wherein.At this moment annular recess 48 can be covered wholly or in part by step 49.
Unshowned the 3rd embodiment that is used to monitor the device of the liquid level in the reservoir 1 according to the present invention provides a kind of buoy with first buoy member and second buoy member, and wherein first buoy member can be inserted in second buoy member.For this reason, second buoy member has a radial recess, and the mode that first buoy member can be directed is inserted in this radial recess, and in order to lead, the sidewall of first buoy member is provided with boss, and the sidewall of second buoy member is provided with corresponding recess.
In this structure, magnet can be installed in the annular recess on the second buoy member end face, and this annular recess is covered by the bottom surface of first buoy member two buoy member assembling backs.
In order to realize two reliable combinations of buoy member, first buoy member can have a boss on the bottom surface, and this boss is buckled in after the assembling of two buoy member in the recess on the second buoy member end face.
Reference numerals list
1 reservoir, 2 conduits
3 buoys, 4 magnets
5 bottoms, 6 pipe joints
7 supports, 8 reed switch
9 buoy member, 10 buoy member
11 buoy member, 12 buoy member
13 grooves 14 are boss radially
15 muscle, 16 bottoms
17 cavitys, 18 sidewalls
19 walls, 20 walls
21 lug plates, 22 edges
23 lids, 24 base plates
25 plug connector housings, 26 recesses
27 contact pins, 28 ends
29 leads, 30 boss
31 recesses, 32 tops
34 holes, 33 bottoms
36 inboards, 35 holes
37 inboard 38 recesses
39 recesses, 40 outsides
41 outsides, 42 latch arm
43 recesses, 44 through holes
45 axle collars, 46 holes
47 end faces, 48 recesses
49 steps, 50 edges
D1 diameter D2 diameter
D3 diameter D4 external diameter
The D5 external diameter
Claims (11)
1. be used to monitor the device of reservoir (1) liquid level, this device comprises that one has the buoy (3) of the magnet (4) that is used for actuation switch (8) or transducer, it is characterized in that described buoy (3) is designed to have first buoy member (9; 11) and second buoy member (10; 12) multiple piece construction, described magnet (4) are installed in described two buoy member (9,10 with embedding; 11,12), the position of described magnet is determined after in conjunction with described two buoy member.
2. device according to claim 1 is characterized in that, after described two buoy member (9,10) assembling, magnet (4) is installed in the annular recess (38,39) of first buoy member (9) and second buoy member (10) with embedding.
3. device according to claim 2 is characterized in that, described first buoy member (9) and second buoy member (10) can be by means of the mutual kaysers of latch elements (42).
4. device according to claim 1 is characterized in that, described first buoy member (11) has a step through-hole (44), and described second buoy member (12) can be installed in this step through-hole by interference fit.
5. device according to claim 4, it is characterized in that, described magnet (4) is installed in the annular recess (48) of second buoy member (12), and this annular recess is covered by the step of first buoy member (11) (49) in two buoy member (11,12) assembling back.
6. device according to claim 1, it is characterized in that, described first buoy member can be inserted in described second buoy member, described magnet is installed in the annular recess on the described second buoy member end face, and this annular recess is covered by the bottom surface of first buoy member two buoy member assembling backs.
7. device according to claim 6, it is characterized in that, described second buoy member has a radial recess, described first buoy member can be inserted in this radial recess, and the sidewall of described first buoy member is provided with a boss, can guide described first buoy member to insert in the radial recess of described second buoy member by means of this boss.
8. device according to claim 7 is characterized in that, described first buoy member is provided with second buoy member and guarantees two elements that buoy member is connected reliably.
9. device according to claim 8 is characterized in that, described first buoy member has a boss on the bottom surface, and this boss is buckled in after described two buoy member assembling in the other recess on the second buoy member end face.
10. according to each described device in the claim 1 to 9, it is characterized in that described first buoy member (9; 11) and second buoy member (10; 12) be configured to foamed plastic part.
11. device according to claim 1 is characterized in that, described reservoir is the reservoir of motor vehicle hydraulic brake system.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004015486 | 2004-03-26 | ||
| DE102004015486.4 | 2004-03-26 | ||
| DE102004061357.5 | 2004-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1938805A CN1938805A (en) | 2007-03-28 |
| CN100533632C true CN100533632C (en) | 2009-08-26 |
Family
ID=37955220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200580009781XA Expired - Fee Related CN100533632C (en) | 2004-03-26 | 2005-03-18 | Device for monitoring the level of a container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100533632C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102712310B (en) * | 2010-01-26 | 2015-01-07 | 博世株式会社 | Reservoir tank and brake device employing same |
| CN103542914A (en) * | 2013-10-29 | 2014-01-29 | 扬州良诚汽车部件有限公司 | Iron support fuel sensor and manufacturing method thereof |
| CN109985283B (en) | 2017-12-29 | 2021-08-13 | 厦门圣慈医疗器材有限公司 | Negative pressure wound therapy devices, systems, and methods |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3437771A (en) * | 1967-05-09 | 1969-04-08 | Roylyn Inc | Liquid level sensing means |
| US3603925A (en) * | 1968-10-21 | 1971-09-07 | Bendix Corp | Master cylinder reservoir level indicator |
| US4020481A (en) * | 1975-02-25 | 1977-04-26 | Nisshin Kogyo Kabushiki Kaisha | Fluid level alarm device |
-
2005
- 2005-03-18 CN CNB200580009781XA patent/CN100533632C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3437771A (en) * | 1967-05-09 | 1969-04-08 | Roylyn Inc | Liquid level sensing means |
| US3603925A (en) * | 1968-10-21 | 1971-09-07 | Bendix Corp | Master cylinder reservoir level indicator |
| US4020481A (en) * | 1975-02-25 | 1977-04-26 | Nisshin Kogyo Kabushiki Kaisha | Fluid level alarm device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1938805A (en) | 2007-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20160318 |