CN201242975Y - Collision sensor - Google Patents
Collision sensor Download PDFInfo
- Publication number
- CN201242975Y CN201242975Y CNU2008200944817U CN200820094481U CN201242975Y CN 201242975 Y CN201242975 Y CN 201242975Y CN U2008200944817 U CNU2008200944817 U CN U2008200944817U CN 200820094481 U CN200820094481 U CN 200820094481U CN 201242975 Y CN201242975 Y CN 201242975Y
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- Prior art keywords
- crash sensor
- contact
- mass
- pedestal
- sensor according
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- Air Bags (AREA)
Abstract
Disclosed is a collision sensor, which mainly comprises a pedestal used for supporting; wherein, the pedestal is provided with a hollow cavity; an elastic piece, a quality block and a contact switch are arranged in the hollow cavity; the quality block is connected with the elastic piece; one end of the contact switch is arranged in the hollow cavity, and the contact switch is used for electrical conduction or electrical disconnection; and the quality block is arranged between the elastic piece and the contact switch in a sliding mode. The collision sensor utilizes the principle of inertia when vehicles collide, accurately judges the conditions of collision and the hard braking and ravine passing, accurately opens an air bag, and ensures the safety of passengers; and the collision sensor has the advantages of simple structure, strong reliability, wide scope of application, convenient installation and low cost.
Description
Technical field
The utility model relates to transducer, relates in particular to a kind of crash sensor that is used to discern collision when object bumps.
Background technology
Along with improving constantly of The development in society and economy and people's living standard, the quantity of vehicle day by day all increases, and has brought very big convenience for people's life.Yet, in the use of automobile, usually can bump, and in collision process, the collision of adopting transducer to come the perception vehicle usually, and then airbag opening ensures passengers inside the car's safety.
In China's utility model patent prospectus publication number " CN200986889 " name be called " collision impact transducer " patent disclosure a kind of collision impact transducer, it comprises sliding axle, mass and contact assembly, wherein mass is supported on the sliding axle and contact assembly is made of separated pair of contacts slidably, and wherein one of above-mentioned pair of contacts is movable and contacts with mass.When bumping, the mass in this transducer moves and makes above-mentioned pair of contacts be in contact with one another, and produces collision alarm.Yet, this transducer to the designing requirement of sliding axle and mass than higher, structure more complicated, and by the collision that sliding axle and mass come the perception vehicle, its reliability is lower, causes the hidden danger on the safety easily.
The utility model content
The technical problems to be solved in the utility model provides a kind of crash sensor of simple in structure, good reliability.
Goal of the invention of the present utility model is achieved through the following technical solutions:
A kind of crash sensor, mainly comprise the pedestal that is used to support, described pedestal has cavity, be provided with elastic component in the described cavity, the mass that is connected with described elastic component, and one end be arranged in the described cavity, be used to the contact-making switch that electrically conducts or disconnect, described mass is for slidably being arranged between described elastic component and the contact-making switch.
Above-mentioned crash sensor, wherein: described pedestal also is provided with the end cap that is connected, is used to seal described cavity with the described elastic component other end.
Above-mentioned crash sensor, wherein: the other end of described contact-making switch also is provided with printed circuit board (PCB).
Above-mentioned crash sensor, wherein: described contact-making switch comprise deformable movable spring slice and with the corresponding contact of this movable spring slice.
Above-mentioned crash sensor, wherein: the end distortion perk of described movable spring slice is in described cavity, and its other end is fixed on the described printed circuit board (PCB).
Above-mentioned crash sensor, wherein: an end of described contact is provided with the bump contact for described movable spring slice one end in contact, and the one end is fixed on the described printed circuit board (PCB).
Above-mentioned crash sensor, wherein: also be provided with the lead-out terminal that is used to transmit signal on the described printed circuit board (PCB).
Above-mentioned crash sensor, wherein: described mass and contact-making switch are metal; Adopt the mass of metal, help mass and touch contact-making switch generation conducting, and under equal volume, its density is bigger, and then make its quality be easy to control.
Above-mentioned crash sensor, wherein: described mass is provided with the hole that is used for for described elastic component one end injection moulding, and the cross sectional shape of described mass is an annular.
Above-mentioned crash sensor, wherein: described pedestal also comprises the housing that matches, is used to hold described pedestal with this pedestal outward, and described housing has opening, and described opening part is provided with the bonnet that is used to seal described housing.
Crash sensor of the present utility model; by elastic component and the mass effect of inertia when the vehicle collision; produce the step signal of expression acceleration magnitude and the signal of telecommunication of circuit communication time length signal; receive this signal by the air bag electronic control unit; and correctly judge when colliding; the situation of bringing to a halt and crossing the gully; accurate airbag opening; reduce that mistake is opened or when needing protection and the situation that air bag is not opened, guarantee driving person's safety, simple in structure; good reliability; and, be not subjected to the restriction of vehicle and the restriction of environment, applied widely; easy for installation, cost is lower.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is the cross section sectional structure schematic diagram of the complete structure of the utility model crash sensor;
Fig. 2 is the part-structure schematic diagram of the utility model crash sensor.
Embodiment
Figure 1 shows that the cross section sectional structure schematic diagram of the complete structure of the utility model crash sensor, consult Fig. 2 simultaneously, be the part-structure schematic diagram of the utility model crash sensor.Crash sensor comprises housing 10, printed circuit board (PCB) 20, pedestal 30, end cap 40, elastic component 50, mass 60, contact-making switch 70, lead-out terminal 80.Wherein, mass 60 is for slidably being arranged between elastic component 50 and the contact-making switch 70, when bumping, mass 60 moves under effect of inertia and under the elastic force effect of elastic component 50, make contact-making switch 70 conductings, produce collision alarm, output to air bag electronic control unit (Electronic Control Unit, ECU) (not shown).
In the utility model, housing 10 is arranged at and matches, is used to hold printed circuit board (PCB) 20 and pedestal 30 outside the pedestal 30, with pedestal 30, it is by rubber, thermoplasticity polyester elastomer (ThermoplasticPolyester Elastomer, TPEE), polybutylene terephthalate (PBT) (Polybutyleceterephthalate, PBT), polyformaldehyde (Polyoxymethylene, polyacetal POM) waits engineering material injection molded.In the embodiment, lead-out terminal 80 also is contained in the housing 10.One end of housing 10 has the opening (figure does not indicate) that is used for assembling printed circuit board (PCB) 20, pedestal 30, end cap 40, elastic component 50, mass 60, contact-making switch 70, in other words, has the cavity that matches with the structure of Fig. 2 in the housing 10.The opening part of housing 10 is provided with the bonnet 11 that is used for seal casinghousing 10, its material system is similarly engineering materials such as rubber, thermoplasticity polyester elastomer, polybutylene terephthalate (PBT), polyformaldehyde, in the embodiment, bonnet 11 is by the glue bonding or be welded on the housing 10 seal casinghousing 10.In addition, housing 10 surfaces are injected with installs direction of arrow (not shown), and this installation direction of arrow helps the operator this crash sensor correctly is installed, and makes the installation direction of arrow consistent with vehicle heading A, guarantees the operate as normal of crash sensor.
In other execution mode of the utility model, housing 10 and bonnet 11 also can omit.
The material system of printed circuit board (PCB) 20 and pedestal 30 can be engineering materials such as rubber, thermoplasticity polyester elastomer, polybutylene terephthalate (PBT), polyformaldehyde equally.Pedestal 30 plays a supportive role, and it has cavity 31.Elastic component 50 and mass 60 are arranged in this cavity 31.In the present embodiment, end cap 40 is arranged on the pedestal 30, is used for enclosed cavity 31, makes cavity 31 form airtight cavity.Elastic component 50 1 ends are connected with mass 60, and its other end is connected with end cap 40.In the embodiment, this elastic component 50 is a spring, and stainless treatment is done on its surface.Smooth treatment is made on cavity 31 surfaces, and the cavity that adopts smooth surface to handle when helping mass 60 with cavity 31 surperficial contacts, reduces the frictional force of 31 of this mass 60 and cavitys.
In other execution mode of the utility model, the cross sectional shape of mass 60 also can be connected with an end of elastic component 50 as long as satisfy mass 60, and mass 60 can slide in cavity 31 and get final product for circular or other shape.
Contact-making switch 70 1 ends are arranged in the cavity 31, and its other end is arranged at printed circuit board (PCB) 20, be used to electrically conduct or disconnect, it comprise deformable movable spring slice 71 and with these movable spring slice 71 corresponding contacts 72.In the present embodiment, the material of movable spring slice 71 and contact 72 is metals such as stainless steel, aluminium, copper, wherein, is preferably copper.The one end distortion perk of movable spring slice 71 is in cavity 31, and its other end is fixed on the printed circuit board (PCB) 20.Contact 72 1 ends are provided with the bump contact 721 for movable spring slice 71 1 end in contact, and its other end is fixed on the printed circuit board (PCB) 20.Again, the other end of movable spring slice 71 and contact 72 is welded on the printed circuit board (PCB) 20, forms the two poles of the earth, and, by being in contact with one another of movable spring slice 71 and contact 72, form the conducting loop, on printed circuit board (PCB) 20, produce the signal of telecommunication.In the present embodiment, the two ends of mass 60 are fixed by elastic component 50 and movable spring slice 71 respectively.
Lead-out terminal 80 is arranged on the printed circuit board (PCB) 20, is used to transmit signal.Say in detail, lead-out terminal 80 1 ends are welded on the printed circuit board (PCB) 20, its other end is electrically connected to air bag electronic control unit on the vehicle by the lead (not shown), promptly the printed circuit board (PCB) 20 that is enclosed in the housing 10 is coupled together with external circuit (electronic control unit), therefore, the signal of telecommunication that produces on printed circuit board (PCB) 20 can be delivered to electronic control unit by lead-out terminal 80, carries out further judgment processing by electronic control unit.
In the normal driving process of vehicle, elastic component 50 is in normal condition, and at this moment, movable spring slice 71 and contact 72 do not contact mutually, are in off-state; When vehicle is collided, vehicle slows down suddenly, and elastic component 50 is because effect of inertia is in extended state, and mass 60 is also because action of inertia, toward the direction motion certain distance of movable spring slice 71, the elastic force of making a concerted effort to overcome movable spring slice 71 of the elastic force of the inertia force of mass 60 and elastic component 50 contacts with each other movable spring slice 71 and contact 72, form the conducting loop, and weakening of inertia force needs the regular hour, the intensity difference of collision, and the size of its acceleration is also inequality.In the utility model, this acceleration is a negative acceleration.Therefore, on printed circuit board (PCB) 20, can produce the step signal of expression acceleration magnitude and the signal of telecommunication of circuit communication time length signal, and export electronic control unit to by lead-out terminal 80.The air bag electronic control unit compares according to the signal and the preset signals that receive, judges whether to satisfy the requirement of colliding, thereby whether confirms airbag opening.
Illustrate, bring to a halt or when crossing the gully, its output signal is that acceleration is very big and very short signal of circuit communication time does not need airbag opening; And when slowly braking, its output signal is that acceleration is less, and long signal of circuit communication time does not need airbag opening yet; And when bumping, because vehicle slows down suddenly, its output signal is that acceleration is bigger, and also long signal of circuit communication time at this moment, needs airbag opening.
Therefore; crash sensor of the present utility model; by elastic component 50 and mass 60 effect of inertia when the vehicle collision; produce the step signal of expression acceleration magnitude and the signal of telecommunication of circuit communication time length signal; receive this signal by the air bag electronic control unit; and correctly judge when colliding; the situation of bringing to a halt and crossing the gully, accurate airbag opening reduces that mistake is opened or when needing protection and the situation that air bag is not opened; guarantee driving person's safety; simple in structure, good reliability, and; be not subjected to the restriction of vehicle and the restriction of environment; applied widely, easy for installation, cost is lower.
The embodiment of the above is a better embodiment of the present utility model; be not to limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence that all shapes according to the utility model, structure are done changes and all comprises in the protection range of the present utility model.
Claims (10)
1. crash sensor, it is characterized in that: described crash sensor comprises the pedestal that is used to support, described pedestal has cavity, be provided with elastic component in the described cavity, the mass that is connected with described elastic component, and one end be arranged in the described cavity, be used to the contact-making switch that electrically conducts or disconnect, described mass is for slidably being arranged between described elastic component and the contact-making switch.
2. crash sensor according to claim 1 is characterized in that: described pedestal also is provided with the end cap that is connected, is used to seal described cavity with the described elastic component other end.
3. crash sensor according to claim 1 and 2 is characterized in that: the other end of described contact-making switch also is provided with printed circuit board (PCB).
4. crash sensor according to claim 3 is characterized in that: described contact-making switch comprise deformable movable spring slice and with the corresponding contact of this movable spring slice.
5. crash sensor according to claim 4 is characterized in that: the end distortion perk of described movable spring slice is in described cavity, and its other end is fixed on the described printed circuit board (PCB).
6. crash sensor according to claim 5 is characterized in that: an end of described contact is provided with the bump contact for described movable spring slice one end in contact, and the one end is fixed on the described printed circuit board (PCB).
7. crash sensor according to claim 3 is characterized in that: also be provided with the lead-out terminal that is used to transmit signal on the described printed circuit board (PCB).
8. crash sensor according to claim 1 and 2 is characterized in that: described mass and contact-making switch are metal.
9. crash sensor according to claim 1 and 2 is characterized in that: described mass is provided with the hole that is used for for described elastic component one end injection moulding, and the cross sectional shape of described mass is an annular.
10. crash sensor according to claim 1 and 2, it is characterized in that: described pedestal also comprises the housing that matches, is used to hold described pedestal with this pedestal outward, described housing has opening, and described opening part is provided with the bonnet that is used to seal described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200944817U CN201242975Y (en) | 2008-05-16 | 2008-05-16 | Collision sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200944817U CN201242975Y (en) | 2008-05-16 | 2008-05-16 | Collision sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201242975Y true CN201242975Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200944817U Expired - Lifetime CN201242975Y (en) | 2008-05-16 | 2008-05-16 | Collision sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201242975Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412092A (en) * | 2011-07-26 | 2012-04-11 | 国营红林机械厂 | Short-circuiting switch of triggered electronic fuse |
| CN104568124A (en) * | 2015-01-16 | 2015-04-29 | 成都大学 | Vibration detector |
| CN105202373A (en) * | 2015-09-09 | 2015-12-30 | 北京科创三思科技发展有限公司 | Acoustic detection sensor for urban gas pipe network |
| CN106248271A (en) * | 2016-08-31 | 2016-12-21 | 贵州航天电子科技有限公司 | A kind of g sensor |
| CN106373373A (en) * | 2016-09-26 | 2017-02-01 | 珠海格力电器股份有限公司 | Remote controller and control method thereof |
| CN108621928A (en) * | 2017-03-21 | 2018-10-09 | 中国探针股份有限公司 | Magnetic-type car-mounted device and its multifunction module used |
| CN108968572A (en) * | 2018-07-20 | 2018-12-11 | 渝新智能科技（上海）有限公司 | A kind of pillow conducive to promotion sleep quality |
| CN109043953A (en) * | 2018-07-20 | 2018-12-21 | 渝新智能科技（上海）有限公司 | A kind of mattress conducive to promotion sleep quality |
| CN109044017A (en) * | 2018-07-20 | 2018-12-21 | 渝新智能科技（上海）有限公司 | A kind of pillow for the sleep that makes for good health |
| CN109124642A (en) * | 2018-07-20 | 2019-01-04 | 渝新智能科技（上海）有限公司 | One kind is for detecting dormant signal source device and sleep articles |
| CN109199396A (en) * | 2018-07-20 | 2019-01-15 | 渝新智能科技（上海）有限公司 | A kind of monitoring device, monitoring method and supporting body |
| CN110074732A (en) * | 2019-05-28 | 2019-08-02 | 东莞市智科智能科技有限公司 | A kind of collision steering structure of sweeping robot |
| CN111688493A (en) * | 2020-05-29 | 2020-09-22 | 宁波峰梅新能源汽车科技有限公司 | Electric automobile collision sensor |
| CN112420446A (en) * | 2020-11-10 | 2021-02-26 | 中国兵器装备集团自动化研究所 | Inertial switch with redundant flexible contact |
-
2008
- 2008-05-16 CN CNU2008200944817U patent/CN201242975Y/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412092A (en) * | 2011-07-26 | 2012-04-11 | 国营红林机械厂 | Short-circuiting switch of triggered electronic fuse |
| CN102412092B (en) * | 2011-07-26 | 2014-03-12 | 国营红林机械厂 | Short-circuiting switch of triggered electronic fuse |
| CN104568124A (en) * | 2015-01-16 | 2015-04-29 | 成都大学 | Vibration detector |
| CN105202373A (en) * | 2015-09-09 | 2015-12-30 | 北京科创三思科技发展有限公司 | Acoustic detection sensor for urban gas pipe network |
| CN106248271B (en) * | 2016-08-31 | 2019-08-02 | 贵州航天电子科技有限公司 | A kind of g sensor |
| CN106248271A (en) * | 2016-08-31 | 2016-12-21 | 贵州航天电子科技有限公司 | A kind of g sensor |
| CN106373373A (en) * | 2016-09-26 | 2017-02-01 | 珠海格力电器股份有限公司 | Remote controller and control method thereof |
| CN108621928A (en) * | 2017-03-21 | 2018-10-09 | 中国探针股份有限公司 | Magnetic-type car-mounted device and its multifunction module used |
| CN109199396A (en) * | 2018-07-20 | 2019-01-15 | 渝新智能科技（上海）有限公司 | A kind of monitoring device, monitoring method and supporting body |
| CN109044017A (en) * | 2018-07-20 | 2018-12-21 | 渝新智能科技（上海）有限公司 | A kind of pillow for the sleep that makes for good health |
| CN109124642A (en) * | 2018-07-20 | 2019-01-04 | 渝新智能科技（上海）有限公司 | One kind is for detecting dormant signal source device and sleep articles |
| CN109043953A (en) * | 2018-07-20 | 2018-12-21 | 渝新智能科技（上海）有限公司 | A kind of mattress conducive to promotion sleep quality |
| CN108968572A (en) * | 2018-07-20 | 2018-12-11 | 渝新智能科技（上海）有限公司 | A kind of pillow conducive to promotion sleep quality |
| CN110074732A (en) * | 2019-05-28 | 2019-08-02 | 东莞市智科智能科技有限公司 | A kind of collision steering structure of sweeping robot |
| CN110074732B (en) * | 2019-05-28 | 2024-05-14 | 东莞市智科智能科技有限公司 | Collision steering structure of sweeping robot |
| CN111688493A (en) * | 2020-05-29 | 2020-09-22 | 宁波峰梅新能源汽车科技有限公司 | Electric automobile collision sensor |
| CN111688493B (en) * | 2020-05-29 | 2024-01-23 | 宁波峰梅新能源汽车科技有限公司 | Electric automobile collision sensor |
| CN112420446A (en) * | 2020-11-10 | 2021-02-26 | 中国兵器装备集团自动化研究所 | Inertial switch with redundant flexible contact |
| CN112420446B (en) * | 2020-11-10 | 2022-12-09 | 中国兵器装备集团自动化研究所有限公司 | Inertial switch with redundant flexible contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHANGSHA BYD AUTO CO., LTD. Assignor: Biyadi Co., Ltd. Contract record no.: 2010440020026 Denomination of utility model: Collision sensor Granted publication date: 20090520 License type: Exclusive License Record date: 20100427 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090520 |