CN202042415U - Permanent magnet type universal crash sensor adopting single elastic bar - Google Patents
Permanent magnet type universal crash sensor adopting single elastic bar Download PDFInfo
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- CN202042415U CN202042415U CN201120108178XU CN201120108178U CN202042415U CN 202042415 U CN202042415 U CN 202042415U CN 201120108178X U CN201120108178X U CN 201120108178XU CN 201120108178 U CN201120108178 U CN 201120108178U CN 202042415 U CN202042415 U CN 202042415U
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- conducting ring
- flexible rod
- crash sensor
- end cover
- lead
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Abstract
A permanent magnet type universal crash sensor adopting a single elastic bar belongs to the technical field of vehicle crash safety sensors. A sensing element of the sensor comprises a mass block provided with a movable annular magnet, and an elastic bar made of soft materials, the elastic bar is fixedly connected with the mass block and an end cover, and a fixed annular magnet and one to two conducting rings with outward leads are arranged in the inner side of a shell. When inertia force generated by external crash achieves a set danger threshold value, the mass block drives a connecting ring to fast contact with the conducting rings for connecting a circuit. The sensor can sense crash from any direction, thus having strong anti-interference, stability and reliability in working, fewer parts, simple structure, easiness for assembling, and suitability for batch production.
Description
Technical field
The utility model relates to a kind of universal crash sensor of magneto that adopts single flexible rod, belongs to the sensor technical field of vehicle collision safe inductive.
Technical background
" the active safety investigation of Bosch China " gone up and shown that fail safe has become the most important standard that automotive performance is estimated.Crash sensor can be transferred to vehicle safety control system with the impact strength threshold signal fast as the Primary Component of vehicle collision safe inductive, and in time firing safety air-bag is protected occupant safety.
In the existing crash sensor technology, crash sensor described in patent publication No. CN01268160 and the CN201440397U, turning circuit is come in the main adsorbed steel-ball collision contact of magnet that relies on, but the magnetic conduction spheroid can only move along a direction, thereby can only detect dead ahead or the tiltedly positive and negative 30 ° collision in the place ahead, and cause contact weak point time of contact or contact to contact unsettled phenomenon easily.Patent CN201231730Y has designed a kind of T type transducer, respectively establishes a magnetic conduction steel ball along three passages.Though this transducer can detect the collision of positive and negative 90 ° of three directions, does not accomplish universal collision detection.The multi-direction accident detection method of changeability conduction coasting body is set in the number of patent application 200510017416.5 described closed chamber, though can detect the collision of any direction, but most notes will be gone into inert gas or vacuum in its cavity, the seal request strictness, and the contact reliability of threshold value induction precision and deformable body and contact is difficult to guarantee, is difficult to be directly used in the high-precision sensing of vehicle collision.Analysis-by-synthesis has crash sensor now, is difficult to satisfy simultaneously multi-direction sensing and the stable instructions for use that contacts.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of universal crash sensor of magneto that adopts single flexible rod, with realization the impact strength of any direction is accurately responded to, and the function of the stable contact of holding contact.
The technical solution adopted in the utility model is: a kind of universal crash sensor of magneto that adopts single flexible rod, it mainly comprises a upper end cover, housing, bottom end cover and a senser that is arranged in the housing, described senser comprises mass and flexible rod that adopts flexible material to make that is provided with movable toroidal magnet, flexible rod is fixedlyed connected with end cap with mass, be provided with a stationary annular magnet and the conducting ring that has to outer lead in described housing inboard, the position of movable toroidal magnet is corresponding with the position of stationary annular magnet, and leave appropriate gap each other, conducting ring is positioned at the lower position of stationary annular magnet, and the position of conducting ring is corresponding with the position of the conducting ring that is positioned at movable toroidal magnet below.
Fixedly connected with the mass that is provided with movable toroidal magnet in the centre of described flexible rod, the one end is fixed on the upper end cover, and the other end is fixed on the bottom end cover; The quantity of described conducting ring is 1-2.
Described conducting ring adopts one first conducting ring and one second conducting ring, be provided with insulating barrier between first conducting ring and second conducting ring, be provided with a fixed muffle in the inboard of first conducting ring, first conducting ring is provided with first lead-in wire, and second conducting ring is provided with second lead-in wire.
Described conducting ring adopts one first conducting ring, is provided with a fixed muffle in the inboard of first conducting ring, and first conducting ring is provided with first lead-in wire, and flexible rod is the 3rd lead-in wire at the overhanging end of bottom end cover.
Above-mentioned technical scheme allows flexible rod connect the mass that has movable toroidal magnet, the stationary annular magnet is fixed in the inwall of housing, and it is corresponding with movable toroidal magnet, when the inertia force of external world's collision generation reaches the dangerous threshold value of setting, mass drives the conducting ring and contacts turning circuit with conducting ring rapidly.
The utility model compared with prior art has following advantage:
1) owing to the flexible resilient rod end cap and mass are linked together, thereby collide in the external world that can respond on any direction, and when inertia force reaches dangerous threshold value, conducting ring on the mass contacts with conducting ring rapidly, the external circuit that the conducting conducting ring is connected, in the accurate detection that guarantees impact strength, realize multi-direction collision sensing.
2) because the stationary annular magnet is fixed in housing, movable magnet is fixed in mass, form combined mechanism, need not the external world after the permanent magnetism the suction-combining force that produces by the permanent magnetism combining structure makes the conducting ring and conducting ring contact provides energy to stablize with regard to keeping, improved the antijamming capability of transducer effectively, solved contact back, contact and kept stable problem.
3) can be according to the difference of extraneous impact strength, by stationary annular magnet and the movable toroidal magnet of selecting different magnetic properties, and the flexible resilient rod of different coefficient of elasticity, satisfy the instructions for use of different application occasion.
4) crash sensor comprises that number of parts is few, and is simple in structure, is easy to assembling, is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is the structure chart that the crash sensor of a kind of single flexible rod and two conducting rings is in holding state.
Fig. 2 is the structure chart that the crash sensor of a kind of single flexible rod and two conducting rings is in conducting state.
Fig. 3 is the structure chart that the crash sensor of a kind of single flexible rod and single conducting ring is in holding state.
Fig. 4 is the structure chart that the crash sensor of a kind of single flexible rod and single conducting ring is in conducting state.
Among the figure: 1, upper end cover, 2, pad, 3, housing, 4, stationary annular magnet, 5, insulating barrier, 6, first lead-in wire, 6a, second lead-in wire, 7, bottom end cover, 8, pad, 9, fixed muffle, 10, first conducting ring, 11, second conducting ring, 12, pad, 13, mass, 14, movable toroidal magnet, 15, flexible rod, 15a, the 3rd lead-in wire, 16, the conducting ring.
Embodiment
Followingly structure of the present utility model is described further with reference to accompanying drawing.
Fig. 1,2 shows the structure chart of the crash sensor of a kind of single flexible rod and two conducting rings.Among the figure, crash sensor mainly comprises a upper end cover 1, housing 3, bottom end cover 7 and a senser that is arranged in the housing 3, senser comprises mass 13 and 1 flexible rod 15 that adopts flexible material to make that is provided with movable toroidal magnet 14, fixedly connected with the mass 13 that is provided with movable toroidal magnet 14 in the centre of flexible rod 15, the one end is fixed on the upper end cover 1, and the other end is fixed on the bottom end cover 7.Be provided with a stationary annular magnet 4, first conducting ring 10 and second conducting ring 11 in housing 3 inboards.The position of movable toroidal magnet 14 is corresponding with the position of stationary annular magnet 4, and leaves appropriate gap each other.Be provided with insulating barrier 5 between first conducting ring 10 and second conducting ring 11, be provided with in the inboard of first conducting ring 10 fixed muffle 9, the first conducting rings 10 be provided with first the lead-in wire 6, the second conducting rings 11 be provided with second the lead-in wire 6a.First conducting ring 10 and second conducting ring 11 are positioned at the lower position of stationary annular magnet 4, and the position of conducting ring is corresponding with the position of the conducting ring 16 that is positioned at movable toroidal magnet 14 belows.
When collisionless or slight impact generation, mass 13 is under the constraint of flexible rod 15, and mass 13 does not move, and the path between first conducting ring 10 and second conducting ring 11 disconnects.When the inertia force of external world's collision generation reaches the dangerous threshold value of setting, mass 13 is because of the motion of inertia force effect along continuous straight runs, flexible rod 15 occurs bending and deformation, first conducting ring 10 on driving conducting ring 16 and being fixed on housing 3 contacts rapidly with second conducting ring 11, and it is stable to rely on permanent magnetism the suction-combining force effect between movable toroidal magnet 14 and the stationary annular magnet 4 to keep in touch, and makes transducer be in conducting state.
Fig. 3,4 shows the structure chart of the crash sensor of a kind of single flexible rod and single conducting ring.The main distinction of the technical scheme shown in the technical scheme shown in Fig. 3,4 and Fig. 1,2 is only to be provided with a stationary annular magnet 4 and first conducting ring, 10, the first conducting rings 10 to be provided with first lead-in wire 6 in housing 3 inboards.First conducting ring 10 is positioned at the lower position of stationary annular magnet 4, and the position of first conducting ring 10 is corresponding with the position of the conducting ring 16 that is positioned at movable toroidal magnet 14 belows.In addition, flexible rod 15 is provided with the 3rd lead-in wire 15a at the overhanging end of bottom end cover 7.In like manner, when the inertia force of external world's collision generation reaches the dangerous threshold value of setting, mass 13 is because of the motion of inertia force effect along continuous straight runs, flexible rod 15 occurs bending and deformation, first conducting ring 10 on driving conducting ring 16 and being fixed on housing 3 contacts rapidly, and it is stable to rely on permanent magnetism the suction-combining force effect between movable toroidal magnet 14 and the stationary annular magnet 4 to keep in touch, and makes transducer be in conducting state by first lead-in wire the 6 and the 3rd lead-in wire 15a.
Claims (4)
1. universal crash sensor of magneto that adopts single flexible rod, it mainly comprises a upper end cover (1), housing (3), bottom end cover (7) and a senser that is arranged in the housing (3), it is characterized in that: described senser comprises mass (13) and flexible rod (15) that adopts flexible material to make that is provided with movable toroidal magnet (14), flexible rod (15) is fixedlyed connected with end cap with mass (13), be provided with a stationary annular magnet (4) in described housing (3) inboard and have conducting ring to outer lead, the position of movable toroidal magnet (14) is corresponding with the position of stationary annular magnet (4), and leave appropriate gap each other, conducting ring is positioned at the lower position of stationary annular magnet (4), and the position of conducting ring is corresponding with the position of the conducting ring (16) that is positioned at movable toroidal magnet (14) below.
2. a kind of universal crash sensor of magneto that adopts single flexible rod according to claim 1, it is characterized in that: fixedly connected with the mass that is provided with movable toroidal magnet (14) (13) in the centre of described flexible rod (15), the one end is fixed on the upper end cover (1), and the other end is fixed on the bottom end cover (7); The quantity of described conducting ring is 1-2.
3. a kind of universal crash sensor of magneto that adopts single flexible rod according to claim 1, it is characterized in that: described conducting ring adopts one first conducting ring (10) and one second conducting ring (11), be provided with insulating barrier (5) between first conducting ring (10) and second conducting ring (11), be provided with a fixed muffle (9) in the inboard of first conducting ring (10), first conducting ring (10) is provided with first lead-in wire (6), and second conducting ring (11) is provided with second lead-in wire (6a).
4. a kind of universal crash sensor of magneto that adopts single flexible rod according to claim 1, it is characterized in that: described conducting ring adopts one first conducting ring (10), be provided with a fixed muffle (9) in the inboard of first conducting ring (10), first conducting ring (10) is provided with first lead-in wire (6), and flexible rod (15) is the 3rd lead-in wire (15a) at the overhanging end of bottom end cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120108178XU CN202042415U (en) | 2011-04-14 | 2011-04-14 | Permanent magnet type universal crash sensor adopting single elastic bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120108178XU CN202042415U (en) | 2011-04-14 | 2011-04-14 | Permanent magnet type universal crash sensor adopting single elastic bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202042415U true CN202042415U (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120108178XU Expired - Fee Related CN202042415U (en) | 2011-04-14 | 2011-04-14 | Permanent magnet type universal crash sensor adopting single elastic bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202042415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163514A (en) * | 2011-04-08 | 2011-08-24 | 赵剑 | Permanent magnet type universal collision sensor |
| CN108320925A (en) * | 2018-03-13 | 2018-07-24 | 李乔 | A kind of special limit switch device of farm |
-
2011
- 2011-04-14 CN CN201120108178XU patent/CN202042415U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163514A (en) * | 2011-04-08 | 2011-08-24 | 赵剑 | Permanent magnet type universal collision sensor |
| CN102163514B (en) * | 2011-04-08 | 2013-10-09 | 赵剑 | Permanent magnet type universal collision sensor |
| CN108320925A (en) * | 2018-03-13 | 2018-07-24 | 李乔 | A kind of special limit switch device of farm |
| CN108320925B (en) * | 2018-03-13 | 2023-02-03 | 李乔 | Special limit switch device in plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20130414 |