CN201562627U - Collision sensor - Google Patents
Collision sensor Download PDFInfo
- Publication number
- CN201562627U CN201562627U CN2009202059589U CN200920205958U CN201562627U CN 201562627 U CN201562627 U CN 201562627U CN 2009202059589 U CN2009202059589 U CN 2009202059589U CN 200920205958 U CN200920205958 U CN 200920205958U CN 201562627 U CN201562627 U CN 201562627U
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- China
- Prior art keywords
- mass
- cavity
- electroconductive elastic
- guide seats
- crash sensor
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Abstract
The utility model discloses a collision sensor comprising a shell, conductive spring plates, a guide base and a mass block, wherein the shell is provided with a cavity; one end of the cavity is open and is sealed through the guide base; and the mass block is slidably arranged in the cavity. The collision sensor is characterized in that the conductive spring plates comprise a first conductive spring plate and a second conductive spring plate which is separated from the first conductive spring plate; one end of the first conductive spring plate and one end of the second conductive spring plate are arranged in the cavity of the shell and positioned at one end far away from the guide base; a guide post is arranged on the guide base; the mass block is slidably sleeved on the guide post; an elastic part is also sleeved on the guide post and butts the mass block on the guide base; and the mass block is a conductive mass block and slides between the position contacting and communicating with the first and second conductive spring plates and the position butting against the guide base.
Description
Technical field
The utility model relates to sensor field, relates in particular to a kind of crash sensor.
Background technology
The reliability of initial mechanical air bag system is very limited, and along with the continuous development of electronic technology, various kinds of sensors is widely used in the automobile air-bag system.Utilize the transducer can be when traffic accident takes place; judge the power of this traffic accident exactly; sending signal by transducer (as crash sensor) accurately judges ECU; the member is reached maximum protection; avoid taking place air bag mistake situation quick-fried or that can not in time open when needing protection and take place, thus make the more mechanical air bag system of air bag system more accurately, quick and reliable.
In the prior art, the transducer of control air bag mostly is the inertia-type crash sensor of contact greatly, comprise steel ball, magnet, contact spring and the magnet holder that is used to install magnet, this contact spring also comprises contact spring and following contact spring, and also needs to carry out the interval with isolating pad between them.Under normal circumstances, steel ball is adsorbed on the magnet under the effect of magnet, when bumping, if the inertia force that is subjected to of steel ball greater than the magnetic force of magnet then steel ball can break away from constraint machinery contact short when hitting contact spring, and then control system is ignited air bag according to the state of transducer.Yet the mechanical type of this transducer collision reliability is not high, when collision, and the reason of invar ball position of collision, contact spring may not can come in contact up and down, thereby is easy to generate this quick-fried situation of air bag, the life security that jeopardizes the occupant.Simultaneously, this sensor bulk is bigger, and amount of parts is many, complex structure, thereby cost is higher.
The utility model content
Not high for solving the reliability that the magnetic-type crash sensor exists in the prior art, baroque problem, it is a kind of simple in structure that the utility model provides, the magnetic-type crash sensor that reliability is high.
The utility model provides a kind of crash sensor, comprise housing, electroconductive elastic sheet, guide seats and mass, has a cavity in the described housing, one end opening of cavity and seal by guide seats, described mass is mounted slidably in cavity, it is characterized in that: described electroconductive elastic sheet comprises first electroconductive elastic sheet and second electroconductive elastic sheet that separates setting with first electroconductive elastic sheet, and an end of described first and second electroconductive elastic sheets places the cavity of housing and is positioned at a end away from guide seats; Described guide seats is provided with a lead, and described mass is sheathed on the described lead slidably, also is arranged with an elastic component on the described lead, and this elastic component is resisted against mass on the guide seats; Described mass is conductive mass, and in the position of the conducting that contacts with first and second electroconductive elastic sheets and be resisted against between the position of guide seats and slide.
As further improvement, described crash sensor also comprises a cushion pad, and described cushion pad is between described mass and guide seats.
As further improvement, an end that places shell cavity of described first and second electroconductive elastic sheets is respectively arranged with towards the outstanding projection of described mass.
As further improvement, an end that places shell cavity of described first and second electroconductive elastic sheets all is provided with separately with described elastic component.
As further improvement, described mass is provided with a centre bore that is used to be sheathed on lead, and described centre bore is stepped and have an end difference, and an end of described elastic component is resisted against this end difference, and the other end is replaced described housing.
As further improvement, described elastic component is a spring.
The crash sensor that the utility model provides, owing to adopted the conduction mass directly to contact ways of connecting with electroconductive elastic sheet, use the structure of whole crash sensor to be simplified, only be provided with several parts such as quality and electroconductive elastic sheet, significantly reduced the amount of parts of using in the crash sensor, simultaneously, the conduction mass directly contacts ways of connecting with electroconductive elastic sheet, can accurately realize the connection and the disconnection of circuit, reach accurate control air bag and ignite the purpose on opportunity, performance reliability height.
Description of drawings
Fig. 1 is the cross-sectional schematic according to a kind of execution mode of crash sensor of the present utility model;
Fig. 2 is the structural representation according to the electroconductive elastic sheet of a kind of execution mode of crash sensor of the present utility model.
Embodiment
To and come in conjunction with the accompanying drawings the utility model is elaborated by embodiment below.
As shown in Figure 1, a kind of execution mode according to crash sensor of the present utility model, comprise housing 1, electroconductive elastic sheet, guide seats 2 and mass 3, has a cavity 4 in the described housing 1, one end opening of cavity 4 and by guide seats 2 sealing, described mass 3 is mounted slidably in cavity 4, wherein, described electroconductive elastic sheet comprises first electroconductive elastic sheet 5 and second electroconductive elastic sheet 6 that separates setting with first electroconductive elastic sheet 5, described first and second electroconductive elastic sheets 5, an end of 6 places the cavity 4 of housing 1 and is positioned at a end away from guide seats 2, described first and second electroconductive elastic sheets 5,6 the other end stretches out in outside the described housing 1 and with circuit board and is electrically connected; Described guide seats 2 is provided with a lead 7, and described mass 3 is sheathed on the described lead 7 slidably, also is arranged with an elastic component 8 on the described lead 7, and this elastic component 8 is resisted against mass 3 on the guide seats 2; Described mass 2 is conductive mass 2, and and first and second electroconductive elastic sheets, 5,6 contacted positions and being resisted against between the position of guide seats 2 slide.
The cavity 4 of described housing 1 can be set to columniform, and the inwall of cavity is smooth.Described mass 3 can be set to cylinder for cooperating the shape of cavity 4.Certainly, described cavity 4 and mass 3 can also be set to other the shape that matches, as long as can realize that mass 3 being free to slide in cavity 4 gets final product by relevant requirement.Described mass 3 is conductive, so material can be copper, aluminium or other coloured conducting metal.In the present embodiment, the material of mass 3 is a copper.Described mass 3 is provided with a centre bore 30 that is used to be sheathed on lead 7, and described centre bore 30 is stepped and have an end difference 31, and an end of described elastic component 8 is resisted against this end difference 31, and the other end is replaced described housing 1.In order to guarantee not interfere between each parts in the crash sensor, an end that places housing 1 cavity 4 of described first and second electroconductive elastic sheets 5,6 all with described elastic component 8 separately, promptly do not come in contact with described elastic component 8.Described elastic component 8 can be spring or elastic caoutchouc, and in the present embodiment, this elastic component 8 is a spring, and its surface is through stainless treatment, and main effect is the shift length of control of quality piece 3 in cavity 4.
Certainly, as another kind of embodiment, can a chute be set at described mass 3, and the establishing that is nested on the chute of lead 7 as slide rail and mass 3 is closed, and the shape of lead 7 and the shape of above-mentioned chute are suitable, as long as can realize the slip of mass 3 on lead 7.Or, can a rail structure be set at described mass 3, rail structure with described mass 3 chute that establishing closes that is nested is set on described lead 7, and the chute shape of the shape of the rail structure of mass 3 and lead 7 is suitable, slides on lead 7 as long as can realize mass 3.As the chute on the mass 3 is inverse-T-shaped, and then lead 7 can be set to adaptive with it "T"-shaped; Or the rail structure on the mass 3 is "T"-shaped, and the chute of lead 7 also is set to adaptive with it "T"-shaped, or the like.
See also Fig. 2, described first and second electroconductive elastic sheets 5,6, L shaped for adopting conductive metal sheet to strike out, its material can be selected beryllium copper, phosphor-copper, duralumin etc. for use, and rubber-like material, and outside gold-plated processing are in order to avoid oxidation and guarantee that resistance is as far as possible little.In the present embodiment, 5,6 injection mouldings of described first and second electroconductive elastic sheets are in described housing.In addition, an end that places housing 1 cavity 4 of described first and second electroconductive elastic sheets 5,6 is respectively arranged with towards the outstanding projection 10 of described mass 3, and this projection 10 helps and the contacting of described mass 3.
Described crash sensor also comprises a cushion pad 9, and described cushion pad 9 can play cushioning effect to the collision that produces between mass 3 and the guide seats 2 between described mass 3 and guide seats 2.This cushion pad 9 adopts elastomeric material commonly used to make.
The crash sensor of a kind of execution mode of the present utility model utilizes principle of inertia, make the mass 3 of conduction overcome the active force of spring 8, the mass 3 and first and second electroconductive elastic sheets 5,6 of conduction are in contact, and then make 5,6 conductings of first and second electroconductive elastic sheets, make circuit transfer low level to by high level, produce a step signal, the electronic control unit that sends on the vehicle also finally judges.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (6)
1. crash sensor, comprise housing, electroconductive elastic sheet, guide seats and mass, has a cavity in the described housing, one end opening of cavity and seal by guide seats, described mass is mounted slidably in cavity, it is characterized in that: described electroconductive elastic sheet comprises first electroconductive elastic sheet and second electroconductive elastic sheet that separates setting with first electroconductive elastic sheet, and an end of described first and second electroconductive elastic sheets places the cavity of housing and is positioned at a end away from guide seats; Described guide seats is provided with a lead, and described mass is sheathed on the described lead slidably, also is arranged with an elastic component on the described lead, and this elastic component is resisted against mass on the guide seats; Described mass is conductive mass, and in the position of the conducting that contacts with first and second electroconductive elastic sheets and be resisted against between the position of guide seats and slide.
2. crash sensor as claimed in claim 1 is characterized in that: described crash sensor also comprises a cushion pad, and described cushion pad is between described mass and guide seats.
3. crash sensor as claimed in claim 1 is characterized in that: an end that places shell cavity of described first and second electroconductive elastic sheets is respectively arranged with towards the outstanding projection of described mass.
4. crash sensor as claimed in claim 1 is characterized in that: an end that places shell cavity of described first and second electroconductive elastic sheets all is provided with separately with described elastic component.
5. crash sensor as claimed in claim 1, it is characterized in that: described mass is provided with a centre bore that is used to be sheathed on lead, described centre bore is stepped and have an end difference, and an end of described elastic component is resisted against this end difference, and the other end is replaced described housing.
6. as claim 1 or 4 described crash sensors, it is characterized in that: described elastic component is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202059589U CN201562627U (en) | 2009-10-17 | 2009-10-17 | Collision sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202059589U CN201562627U (en) | 2009-10-17 | 2009-10-17 | Collision sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562627U true CN201562627U (en) | 2010-08-25 |
Family
ID=42627781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202059589U Expired - Lifetime CN201562627U (en) | 2009-10-17 | 2009-10-17 | Collision sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562627U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
2009
- 2009-10-17 CN CN2009202059589U patent/CN201562627U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |