CN103712722A - Locking force measurement method and locking force measurement device for automobile front cover - Google Patents
Locking force measurement method and locking force measurement device for automobile front cover Download PDFInfo
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- CN103712722A CN103712722A CN201210378925.0A CN201210378925A CN103712722A CN 103712722 A CN103712722 A CN 103712722A CN 201210378925 A CN201210378925 A CN 201210378925A CN 103712722 A CN103712722 A CN 103712722A
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- front cover
- variable shaped
- body structure
- vehicle
- force measuring
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Abstract
This invention relates to a locking force measurement method and a locking force measurement device for an automobile front cover. The locking force measurement method for the automobile front cover comprises steps of putting an automobile front cover key cylinder in a box structure tooling which is fixed with the automobile body, forming the two sides of the box structure tooling into two deformable beams, adhering a plurality of strain gauges on the deformable beams, forming an electric bridge through electrically connecting the plurality of strain gauges, and obtaining the received force on the automobile front lock by measuring the voltage outputted by the electrical bridge. By utilizing the locking force measurement method and the locking force measurement device for the automobile front cover, the pressure applied on the front cover lock can be accurately measured without destroying the conventional structure of the automobile.
Description
Technical field
The present invention relates to a kind of force measurement method that measured automobiles front cover lock is subject to and the measurement mechanism of measured automobiles front cover lock.
Background technology
When front cover for vehicle is closed, front cover lock can be subject to larger impulsive force.Measure the size of this power, will contribute to the design of lock and periphery panel beating thereof.The method mainly comprises specific frock and resistance strain gage is arranged.
The method of current domestic measured automobiles front cover lock power all needs vehicle body metal plate structure to carry out partial destruction, by general power sensor being installed or directly being pasted foil gauge and measure on vehicle body.These methods have changed the structure of former vehicle body, have changed greatly the states such as its rigidity, intensity, make measurement result not accurate enough.
Summary of the invention
In view of the above problems, the present invention aims to provide on a kind of basis not destroying primary car structure vehicle front cover lock force measuring method that can Measurement accuracy front cover lock power.
A kind of vehicle front cover lock force measuring method of the present invention, is characterized in that, comprises the steps:
Front cover for vehicle lock core is placed in to body structure frock and makes described body structure frock and fixing step that vehicle body is fixing;
The variable shaped beam that two sides of described body structure frock is formed to two variable shaped beams forms step;
On described variable shaped beam, paste the foil gauge setting steps of many pieces of foil gauges;
Electric bridge by many pieces of foil gauges by the electric bridge that is electrically connected to form forms step;
By measuring the output voltage of described electric bridge, obtain the pressure survey step of the power that lock is subject to before automobile.
Preferably, in described foil gauge setting steps, on two surfaces of described two variable shaped beams, each fixes 2 pieces of foil gauges respectively, at described electric bridge, form in step, by these 4 pieces of foil gauges by the Wheatstone bridge that is electrically connected to form.
Preferably, in described fixing step, the front surface of front cover for vehicle lock core and described body structure frock is fixed into one.
Preferably, in described fixing step, rear surface in described body structure frock arranges mounting hole, by described mounting hole so that be installed to this lock core position after vehicle body and the mode of former lock core position consistency is fixed on described body structure frock on vehicle body.
Preferably, in described foil gauge setting steps, by the mode of pasting or welding, foil gauge is fixed on described variable shaped beam.
Preferably, at described variable shaped beam, form in step, two of described body structure frock sides are formed to described variable shaped beam by reducing rigidity and increasing.
Preferably, at described variable shaped beam, form in step, by perforate is carried out in two of described body structure frock sides, form described variable shaped beam.
Vehicle front cover lock force measuring device of the present invention, is characterized in that, comprising:
Body structure frock, for taking in front cover for vehicle lock core, front surface and front cover for vehicle lock core are fixed as one, and rear surface and vehicle body are fixed, and two sides, are formed with variable shaped beam; And
Many pieces of foil gauges, stick on described variable shaped beam,
Wherein, described many pieces of foil gauges by the electric bridge that is electrically connected to form as power sensor.
Preferably, on two surfaces of described two variable shaped beams, each fixes 2 pieces of foil gauges respectively, by these 4 pieces of foil gauges by the Wheatstone bridge that is electrically connected to form.
Preferably, in the rear surface of described body structure frock, mounting hole is set, by described mounting hole so that be installed to this lock core position after vehicle body and the mode of former lock core position consistency is fixed on described body structure frock on vehicle body.
Preferably, described foil gauge is fixed on described variable shaped beam by the mode of pasting or weld.
Preferably, described variable shaped beam is by two of described body structure frock sides are formed by reducing rigidity and increasing distortion.
Preferably, described variable shaped beam is to form by perforate is carried out in two of described body structure frock sides.
Utilize vehicle front cover lock force measuring device of the present invention and vehicle front cover lock force measuring method can be on the basis of not destroying primary car structure Measurement accuracy front cover lock power, and object construction involved in the present invention is simple, easy to make, with low cost, reusable, the change that only need slightly do in size can be applicable to different automobile types.
Accompanying drawing explanation
Fig. 1 is the design sketch of the front cover lock force measuring device of an embodiment of the present invention.
Fig. 2 is the vertical view of the front cover lock force measuring device of an embodiment of the present invention.
Fig. 3 is the upward view of the front cover lock force measuring device of an embodiment of the present invention.
Fig. 4 is the schematic diagram that in the front cover lock force measuring device of first embodiment of the invention, foil gauge forms electric bridge.
Fig. 5 is the schematic flow sheet of front cover lock force measuring method of the present invention.
Reference numeral
1 body structure frock
2 protecgulum lock cores
3 mounting holes
4 variable shaped beams
5 first foil gauges
6 second foil gauges
7 the 3rd foil gauges
8 the 4th foil gauges
Embodiment
What introduce below is some in a plurality of embodiment of the present invention, aims to provide basic understanding of the present invention.Be not intended to confirm key of the present invention or conclusive key element or limit claimed scope.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the design sketch of the front cover lock force measuring device of an embodiment of the present invention.Fig. 2 is the vertical view of the front cover lock force measuring device of an embodiment of the present invention.Fig. 3 is the upward view of the front cover lock force measuring device of an embodiment of the present invention.
In Fig. 1～Fig. 3,1 represents the body structure frock of thin-walled.Body structure frock 1 is for taking in front cover for vehicle lock core 2.Front cover for vehicle lock core 2 is removed to former mounting bracket and be placed in body structure frock 1, and a face of body structure frock 1 face of (in Fig. 1 be near the place ahead) and protecgulum lock core 2 are fixed as one by the mode of welding etc.On another face of body structure frock 1 (being a face near rear in Fig. 1), be provided with mounting hole 3, by mounting hole 3 body structure frocks 1, be connected with vehicle body and fix.Lock core position and the former lock core position consistency of the inside need to guarantee to be installed to vehicle body when install bin body structure frock 1 after.
Here, above-mentioned " face " of body structure frock 1 can refer to and be assembled to Che Shanghou near that face of headstock, another face of body structure frock 1 can refer to and be assembled to Che Shanghou near that surface of the tailstock, that face near headstock is called to " front surface " here, that face near headstock is become to be called " rear surface ".
On two sides except above-mentioned front surface and rear surface of body structure frock 1, by methods such as perforates, subdue material to reduce rigidity and to increase deformation, form thus variable shaped beam 4.In Fig. 1 only example on two sides, carry out respectively the mode of perforate.Except the mode of perforate, can also directly two side views be designed narrowly, thin, or also can to reach, reduce rigidity and increase deformation object with the little material of rigidity or heat treatment method.
As shown in Figures 2 and 3, on the variable shaped beam 4 of both sides, fix respectively 2 pieces of foil gauges, particularly, on the variable shaped beam 4 of a side, fix respectively the first foil gauge 5 and the 3rd foil gauge 7, on the variable shaped beam 4 of opposite side, fix respectively the second foil gauge 6 and the 4th foil gauge 8, distortion sheet can be separately fixed on the upper surface and lower surface of variable shaped beam.The first foil gauge 5～four foil gauge 8 can be fixed on variable shaped beam 4 by modes such as stickup, welding.
Then, the first foil gauge 5～four foil gauge 8 is formed to Wheatstone bridge according to the connected mode shown in Fig. 4, wherein, the resistance in Fig. 49 is that the first foil gauge 5, resistance 10 are that the 3rd foil gauge 7, resistance 11 are that the 4th foil gauge 8, resistance 12 are second foil gauges 6.By four pieces of foil gauges, be that four resistance form Wheatstone bridges, get medium voltage as output, utilize following formula to ask for the pressure F that front cover lock is subject to:
F＝Ku
Wherein, F is the pressure that front cover lock is subject to, and u is strain, and K is calibration value (being known).
Like this, by the first foil gauge 5～four foil gauge 8 being set on variable shaped beam 4 and forming Wheatstone bridge, do not need to destroy primary car structure and just can measure exactly the pressure F that front cover lock is subject to.
On regard to front cover lock force measuring device of the present invention and be illustrated.Under regard to front cover lock force measuring method of the present invention and describe.
Vehicle front cover lock force measuring method of the present invention mainly comprises the steps:
Fixing step S101: front cover for vehicle lock core 2 is placed in to body structure frock 1 and described body structure frock 1 is fixed with vehicle body;
Variable shaped beam forms step S102: two sides of described body structure frock 1 are formed to two variable shaped beams 4;
Foil gauge setting steps S103: fix the first foil gauge 5～four foil gauge 8 in the mode of pasting or weld on described variable shaped beam 4;
Electric bridge forms step S104: by 8 of the first foil gauge 5～four foil gauges by the Wheatstone bridge that is electrically connected to form;
Pressure survey step S105: obtain locking the power being subject to before automobile by measuring the output voltage of described electric bridge.
Wherein, in fixing step S101, front cover for vehicle lock core 2 and the front surface of body structure frock 1 are fixed into one, as fixing mode, can adopt bonding, welding etc. here.And, in the rear surface of body structure frock 1, mounting hole 3 is set, by mounting hole 3 so that be installed to this lock core position after vehicle body and the mode of former lock core position consistency is fixed on body structure frock 1 on vehicle body.
At variable shaped beam, form in step S102, two of body structure frock 1 sides are formed to variable shaped beam 4 by reducing rigidity and increasing.For example, can form variable shaped beam 4 by perforate is carried out in two of body structure frock 1 sides, also can directly two side views of body structure frock 1 be designed narrowly, thin, or can also reach and reduce rigidity and increase deformation object with the little material of rigidity or heat treatment method.
Wherein, in foil gauge setting steps S103, on two surfaces of two variable shaped beams 4, fix 2 pieces of foil gauges respectively in mode bonding or welding, 2 pieces of foil gauges can be respectively formed on the upper surface and lower surface of variable shaped beam 4.
Utilize the vehicle front cover lock force measuring method of the invention described above, do not need to destroy primary car structure and just can measure exactly the pressure that front cover lock is subject to.
Above example has mainly illustrated vehicle front cover lock force measuring device of the present invention and vehicle front cover lock force measuring method.Although only some of them the specific embodiment of the present invention is described, those of ordinary skills should understand, and the present invention can be within not departing from its purport and scope implements with many other forms.Therefore, the example of showing and embodiment are regarded as illustrative and not restrictive, and in the situation that not departing from spirit of the present invention as defined in appended each claim and scope, the present invention may be contained various modifications and replacement.
Claims (13)
1. a vehicle front cover lock force measuring method, is characterized in that, comprises the steps:
Front cover for vehicle lock core is placed in to body structure frock and makes described body structure frock and fixing step that vehicle body is fixing;
The variable shaped beam that two sides of described body structure frock is formed to two variable shaped beams forms step;
On described variable shaped beam, paste the foil gauge setting steps of many pieces of foil gauges;
Electric bridge by many pieces of foil gauges by the electric bridge that is electrically connected to form forms step;
By measuring the output voltage of described electric bridge, obtain the pressure survey step of the power that lock is subject to before automobile.
2. vehicle front cover lock force measuring method as claimed in claim 1, is characterized in that,
In described foil gauge setting steps, on two surfaces of described two variable shaped beams, each fixes 2 pieces of foil gauges respectively, at described electric bridge, form in step, by these 4 pieces of foil gauges by the Wheatstone bridge that is electrically connected to form.
3. vehicle front cover lock force measuring method as claimed in claim 1, is characterized in that,
In described fixing step, the front surface of front cover for vehicle lock core and described body structure frock is fixed into one.
4. vehicle front cover lock force measuring method as claimed in claim 1, is characterized in that,
In described fixing step, in the rear surface of described body structure frock, mounting hole is set, by described mounting hole so that be installed to this lock core position after vehicle body and the mode of former lock core position consistency is fixed on described body structure frock on vehicle body.
5. vehicle front cover lock force measuring method as claimed in claim 1, is characterized in that,
In described foil gauge setting steps, by the mode of pasting or welding, foil gauge is fixed on described variable shaped beam.
6. vehicle front cover lock force measuring method as claimed in claim 1, is characterized in that,
At described variable shaped beam, form in step, two of described body structure frock sides are formed to described variable shaped beam by reducing rigidity and increasing.
7. vehicle front cover lock force measuring method as claimed in claim 6, is characterized in that,
At described variable shaped beam, form in step, by perforate is carried out in two of described body structure frock sides, form described variable shaped beam.
8. a vehicle front cover lock force measuring device, is characterized in that, comprising:
Body structure frock, for taking in front cover for vehicle lock core, front surface and front cover for vehicle lock core are fixed as one, and rear surface and vehicle body are fixed, and two sides, are formed with variable shaped beam; And
Many pieces of foil gauges, stick on described variable shaped beam,
Wherein, described many pieces of foil gauges by the electric bridge that is electrically connected to form as power sensor.
9. vehicle front cover lock force measuring device as claimed in claim 8, is characterized in that,
On two surfaces of described two variable shaped beams, each fixes 2 pieces of foil gauges respectively, by these 4 pieces of foil gauges by the Wheatstone bridge that is electrically connected to form.
10. vehicle front cover lock force measuring device as claimed in claim 9, is characterized in that,
Rear surface in described body structure frock arranges mounting hole, by described mounting hole so that be installed to this lock core position after vehicle body and the mode of former lock core position consistency is fixed on described body structure frock on vehicle body.
11. vehicle front cover lock force measuring devices as claimed in claim 10, is characterized in that,
Described foil gauge is fixed on described variable shaped beam by the mode of pasting or weld.
12. vehicle front cover lock force measuring devices as claimed in claim 11, is characterized in that,
Described variable shaped beam is by two of described body structure frock sides are formed by reducing rigidity and increasing distortion.
13. vehicle front cover lock force measuring devices as claimed in claim 12, is characterized in that,
Described variable shaped beam is to form by perforate is carried out in two of described body structure frock sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210378925.0A CN103712722B (en) | 2012-10-09 | 2012-10-09 | A kind of vehicle front cover lock force measuring method and vehicle front cover lock force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210378925.0A CN103712722B (en) | 2012-10-09 | 2012-10-09 | A kind of vehicle front cover lock force measuring method and vehicle front cover lock force measuring device |
Publications (2)
| Publication Number | Publication Date |
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| CN103712722A true CN103712722A (en) | 2014-04-09 |
| CN103712722B CN103712722B (en) | 2017-08-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756943A (en) * | 1991-12-27 | 1998-05-26 | Ishida Co., Ltd. | Load cell |
| CN2359684Y (en) * | 1998-12-26 | 2000-01-19 | 中国科学院合肥智能机械研究所 | Frame type three-D force transducer |
| CN201074446Y (en) * | 2007-07-26 | 2008-06-18 | 奇瑞汽车有限公司 | Vehicle front cover lock |
| CN101554894A (en) * | 2009-05-14 | 2009-10-14 | 重庆大学 | Foot plate structure of humanoid robot capable of perceiving ground counterforces |
| CN101603865A (en) * | 2009-07-17 | 2009-12-16 | 上海应用技术学院 | Attached type force-measuring sensor |
| CN102072786A (en) * | 2010-12-22 | 2011-05-25 | 江苏万工科技集团有限公司 | Device for measuring bending torque of heald frame of loom |
-
2012
- 2012-10-09 CN CN201210378925.0A patent/CN103712722B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756943A (en) * | 1991-12-27 | 1998-05-26 | Ishida Co., Ltd. | Load cell |
| CN2359684Y (en) * | 1998-12-26 | 2000-01-19 | 中国科学院合肥智能机械研究所 | Frame type three-D force transducer |
| CN201074446Y (en) * | 2007-07-26 | 2008-06-18 | 奇瑞汽车有限公司 | Vehicle front cover lock |
| CN101554894A (en) * | 2009-05-14 | 2009-10-14 | 重庆大学 | Foot plate structure of humanoid robot capable of perceiving ground counterforces |
| CN101603865A (en) * | 2009-07-17 | 2009-12-16 | 上海应用技术学院 | Attached type force-measuring sensor |
| CN102072786A (en) * | 2010-12-22 | 2011-05-25 | 江苏万工科技集团有限公司 | Device for measuring bending torque of heald frame of loom |
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| CN103712722B (en) | 2017-08-25 |
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