CN106950050A - Brake-pedal travel measurement apparatus - Google Patents
Brake-pedal travel measurement apparatus Download PDFInfo
- Publication number
- CN106950050A CN106950050A CN201710187370.4A CN201710187370A CN106950050A CN 106950050 A CN106950050 A CN 106950050A CN 201710187370 A CN201710187370 A CN 201710187370A CN 106950050 A CN106950050 A CN 106950050A
- Authority
- CN
- China
- Prior art keywords
- displacement meter
- geometrical clamp
- brake
- pull bar
- adjusting lever
- 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.)
- Granted
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The invention discloses a kind of brake-pedal travel measurement apparatus, including：Displacement meter, the displacement meter includes pull bar and sleeve pipe；The head of the pull bar is fixed on brake pedal, and the afterbody of the pull bar is arranged in described sleeve pipe and can slid axially in described sleeve pipe；Goniometer, the goniometer is provided with outer corner measurement mechanism and connecting pole；Displacement meter geometrical clamp, one end of the displacement meter geometrical clamp is connected with the outer corner measurement mechanism, and the other end of the displacement meter geometrical clamp is clamped in described sleeve pipe；The adjustment mechanism in mounting seat is fixed on, the adjustment mechanism is connected with the connecting pole, the position for adjusting the goniometer.In actual use, easily the present invention can be arranged on cabin floor, and the position of displacement meter is flexibly set by adjustment mechanism, and pass through straight-line displacement and the anglec of rotation obtains accurate brake-pedal travel.
Description
Technical field
The present invention relates to pedal performance test field, more particularly to a kind of brake-pedal travel measurement apparatus.
Background technology
Brakes is always all enjoyed as one of driver's manipulation device most important and most frequent in vehicle drive
Concern, therefore, is also increasingly taken seriously for brake pedal handling and quality analysis.
One of key parameter of brake pedal handling test evaluation is pedal travel, and its measurement result not only needs standard
Really reflection driver's use state, is also one of Main Basiss for being demarcated to retardation efficiency.Traditional automobile brake pedal
Stroke measurment, is realized by stay-supported type displacement sensor, but generally brake pedal is to be fixed by connecting rod with vehicle body, because
This, it is one section that the actual motion track of brake pedal, which can be regarded as the circular motion using fixing end as the center of circle, i.e. pedal travel,
Camber line displacement, but stay-supported type displacement sensor can only measure air line distance, it is impossible to camber line is measured, therefore, passes through stay-supported position
Displacement sensor can only approximate measure brake pedal stroke, so as to cause measurement accuracy deviation occur, and then influence to Brake Energy
The evaluation of power；Further, since vehicle is different, driving, indoor location stay-supported type displacement sensor is complex, or even also needs pair
Vehicle necessarily dismantle or destroy, thus causes operating efficiency low, it is impossible to meet experiment demand.
The content of the invention
It is an object of the invention to provide a kind of brake-pedal travel measurement apparatus, vehicle system can be easily and accurately obtained
Dynamic pedal travel data.
The technical solution adopted by the present invention is as follows：
A kind of brake-pedal travel measurement apparatus, including：Displacement meter, the displacement meter includes pull bar and sleeve pipe；It is described to draw
The head of bar is fixed on brake pedal, and the afterbody of the pull bar is arranged in described sleeve pipe and can be in described sleeve pipe along axle
To slip；Goniometer, the goniometer is provided with outer corner measurement mechanism and connecting pole；Displacement meter geometrical clamp, the displacement meter is consolidated
One end of clamp is connected with the outer corner measurement mechanism, and the other end of the displacement meter geometrical clamp is clamped in described sleeve pipe；When
When brake pedal is moved, the displacement meter is rotated using retaining part as the center of circle and drives the displacement meter geometrical clamp to rotate, described
Outer corner measurement mechanism indicates the anglec of rotation of the displacement meter according to the rotation of the displacement meter geometrical clamp；It is fixed on installation
Adjustment mechanism on base, the adjustment mechanism is connected with the connecting pole, the position for adjusting the goniometer.
Preferably, the adjustment mechanism includes：First adjusting lever, the first geometrical clamp, the second adjusting lever, the second geometrical clamp with
And fixed seat；The connecting pole is connected by first geometrical clamp with one end of first adjusting lever, first adjustment
The other end of bar is connected by second geometrical clamp with second adjusting lever, and second adjusting lever is arranged on the fixation
On seat, the fixed seat is fixed in the mounting seat；Adjust position of first geometrical clamp on first adjusting lever
Put and/or position of second geometrical clamp on second adjusting lever, the position of the goniometer can be adjusted.
Preferably, the pull bar is provided with scale.
Preferably, the mounting seat, which is provided with, is used for the magnet with the adhesive of cabin floor.
Preferably, the head of the pull bar is connected to the medium position of the side of brake pedal.
Compared to traditional stay-supported type displacement sensor, the present invention measures the straight line of brake pedal by telescopic displacement
Shift length, and the anglec of rotation of brake pedal is measured by angle, so as to obtain accurate brake-pedal travel；
By setting magnet in mounting seat in the preferred scheme of the present invention so that the device directly can be consolidated in adhesive with cabin floor
Fixed, on the other hand, the present invention is also provided with adjustment mechanism, is easy to that the present invention and the relative position of brake pedal is adjusted flexibly, from
And handling that is convenient, fast and testing vehicle brake pedal exactly is enabled the invention to, without appointing to test vehicle
What is changed, and effectively improves testing efficiency and the degree of accuracy.
Brief description of the drawings
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
Step description, wherein：
The structural representation of the embodiment for the brake-pedal travel measurement apparatus that Fig. 1 provides for the present invention；
Fig. 2 is the principle schematic for calculating brake-pedal travel.
Description of reference numerals：
The outer corner measurement mechanism of 1 displacement meter, 101 pull bar, 102 sleeve pipe, 2 goniometer 201
The adjusting lever of 202 connecting pole, 3 displacement meter geometrical clamp, 4 first adjusting lever 5 second
The brake pedal of 6 first 9 mounting seat of geometrical clamp 7 second geometrical clamp, 8 fixed seat 10
11 pedal dynamics meter E witness mark F fixing ends of the present invention
X1、X2：The position of brake pedal
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The invention provides a kind of embodiment of brake-pedal travel measurement apparatus, as shown in figure 1, including：Displacement meter 1,
Goniometer 2, mounting seat 9 and the adjustment mechanism (not shown) being fixed in mounting seat 9.Wherein, displacement meter 1 it is main by
Pull bar 101 and sleeve pipe 102 are constituted, and the head of pull bar 101 is fixed on brake pedal 10, and its fixed form can be conventional appoints
The use screw connection manner shown in a kind of what mode, such as figure, need exist for explanation be to make follow-up calculating tend to be accurate,
It is contemplated that the head of pull bar 101 to be fixed on to the medium position of a side of brake pedal 10；Then, the tail of pull bar 101
Portion is then arranged in sleeve pipe 102, and can in the sleeve pipe 102 sliding axially along pull bar 101, by above-mentioned set-up mode,
Substantial displacement meter 1 of the present invention can be understood as telescopic structure, i.e., when brake pedal 10 is moved, pull bar
101 can be stretched, and it is the straight-line displacement for measuring brake pedal 10 that it, which is acted on, it may be considered that set distance to carve on pull bar 101
Degree, increases the readability of displacement data；
Continue above, goniometer 2 is provided with outer corner measurement mechanism 201 and connecting pole 202；One end of displacement meter geometrical clamp 3
It is connected with outer corner measurement mechanism 201, its other end is then clamped in described sleeve pipe 102；The present invention uses fixture method of clamping,
, can also be using fixing modes or non-removable fixed connection mode etc. such as interference fits in practical operation, the purpose is to make set
The position relationship geo-stationary of pipe 102 and displacement meter geometrical clamp 3；Here supplement a bit, for ease of measurement, it may be considered that make clamping
Position (i.e. both tie points) is close to the afterbody of sleeve pipe 102；And one end of displacement meter geometrical clamp 3 and outer corner measurement mechanism 201
Connected mode can also be various, for example, displacement meter geometrical clamp 3 is plugged in the slotted eye of outer corner measurement mechanism 201, both
Linkage rotation；In another embodiment of the present invention, outer corner measurement mechanism 201 is transparent casing structure, displacement meter geometrical clamp 3
It is plugged among the case, the rotation status of displacement meter geometrical clamp 3 is can see through the case；Or it is also conceivable to displacement
It is integrative-structure etc. that geometrical clamp 3, which is counted, with outer corner measurement mechanism 201, but no matter which kind of annexation is used, and its effect is identical,
I.e. when brake pedal 10 is moved, displacement meter 1 rotates by the center of circle of clamped position, while drive displacement meter geometrical clamp 3 to rotate,
And outer corner measurement mechanism 201 can indicate or directly measure the anglec of rotation of displacement meter 1 according to the rotation of displacement meter geometrical clamp 3,
Therefore, can be with outer corner measurement mechanism 201, goniometer 2 or displacement meter geometrical clamp 3 according to above-mentioned various connected modes
Corresponding angle index and cue mark are set, to aid in read the anglec of rotation, here it should be noted that, for ensure measurement
Accurately, goniometer 2 can be using the high High-precision angle measuring apparatus of scale degree of differentiation；
Then, the adjustment mechanism being fixed in mounting seat 9 is connected with the connecting pole 202 of goniometer 2 so that goniometer 2
It is relatively fixed with the position of mounting seat 9, that is, when using the present invention, the part for actually occurring motion only has：Displacement meter 1
Pull bar 101 stretch out, and displacement meter 1 rotarily drives displacement meter geometrical clamp 3 and (or) outer corner measurement mechanism 201 is rotated；And adjust
The effect of whole mechanism is setting, adjustment angle meter 2 (and connected displacement meter 1) and brake pedal before using the present invention
10 position relationship.
Specifically, the adjustment mechanism can be the structure shown in Fig. 1：First adjusting lever 4, the first geometrical clamp 6, second
Adjusting lever 5, the second geometrical clamp 7 and fixed seat 8；Wherein, the one end of the first geometrical clamp 6 is clamped in the connecting pole 202 of goniometer 2
On, the other end is connected with one end of the first adjusting lever 4, and the first geometrical clamp 6 can be moved on the first adjusting lever 4；And the
The other end of one adjusting lever 4 is then connected by the second geometrical clamp 7 with the second adjusting lever 5, and the second geometrical clamp 7 can be second
Moved on adjusting lever 5；It is to be herein pointed out still using fixture method of clamping in the present embodiment, its advantage is easy for
Assemble and be easy to rotation adjustable；Then, the two ends of second adjusting lever 5 are separately mounted in fixed seat 8, and fixed seat 8 is then
It is integrally fixed in mounting seat 9, then refer to Fig. 1, the first adjusting lever 4 and the second adjusting lever 5 is in Relative vertical relation；Pass through
Above-mentioned set-up mode, changes position angle etc. of two geometrical clamps, it is possible to which flexible angle adjustment meter is about 2, left and right and preceding
Position afterwards.
On the present invention and the connected mode of vehicle body, in another embodiment, magnetic is provided with mounting seat 9
The present invention, directly can firmly be fixed, reach and be easily installed dismounting, need not destroy car by iron in test with cabin plate
The present apparatus, specifically, can be fixed on the floor below the foot pad at driver by the purpose of inner structure.
Above-mentioned is the structure setting of the embodiment of the present invention, it is necessary to particularly point out, in actual applications, for ease of surveying
Amount, calculating and follow-up data analysis etc., displacement meter 1 and goniometer 2 of the present invention may each be electrical equipment, such as position
Displacement sensor and angular transducer, electric signal is connected with analytical instrument etc. for both, and the displacement of collection or rotating mould analog quantity are turned
Analytical instrument is sent to for data signal to be handled；In addition, also show pedal dynamics meter 11 in Fig. 1, it is arranged on system
On dynamic pedal 10, so, when depression of brake pedal 10, analytical instrument can obtain displacement signal and pedal force letter simultaneously
Number, it is easy to data needed for both integrated uses are obtained into experiment.
Below in conjunction with the operation principle for shown in Fig. 2, illustrating the present invention：Set and described according to above-mentioned part, incite somebody to action this
Invention is fixed in vehicle drive room, and the drawing of the pull bar 101 of displacement meter 1 in initial setting up, can also be made in implementation process
The displacement tangential in direction and brake pedal 10 is stretched, specifically, brake pedal 10 is in position X1, the stretching of pull bar 101
The displacement tangential that direction will be produced with brake pedal 10, now, is measured apart from a (people in the art by displacement meter
Member is it is understood that witness mark E of the present invention is the position clamped on sleeve pipe 102 of displacement meter geometrical clamp 3)；When
When brake pedal 10 moves to position X2, the extension of pull bar 102 of displacement meter 1 is measured apart from b, and at the same time, displacement meter 1 is with clamping
Position rotates for the center of circle, and goniometer 2 measures the anglec of rotation for θ；According to the cosine law, you can to obtain pedal position by calculating
The distance between X1 and position X2 c；As it is clear from fig. 2 that being that brake pedal 10 is transported around the illusory circles of its fixing end F apart from c
One section of chord length on dynamic rail mark, and the actual motion path of brake pedal 10 is circular arc corresponding with the chord length (apart from c), by
Differential Principle is understood, when chord length (apart from c) is sufficiently small, chord length and arc length approximately equal, therefore, can be tried to achieve by integration method
The exact shift of position X1 to position X2 arc length, i.e. brake pedal 10, in practical operation, can select high-precision angle
Meter, makes the counting accuracy of shift value more preferably；Certainly, above-mentioned all calculating process can also be compiled algorithm by being accomplished manually
Program is written as, by calculation process such as follow-up analytical instrument, the present invention is not limited this.
Finally it is pointed out that the structure and operation principle of the present invention, not just for brake pedal, in measurement work
When making the close clutch pedal of principle and gas pedal, the present invention is still applicable.
Construction, feature and the action effect of the present invention, above institute is described in detail according to the embodiment shown in schema above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range shown in drawing, it is every according to structure of the invention
Want made change, or be revised as the Equivalent embodiments of equivalent variations, still without departing from specification with illustrating during covered spirit,
All should be within the scope of the present invention.
Claims (5)
1. a kind of brake-pedal travel measurement apparatus, it is characterised in that including：
Displacement meter, the displacement meter includes pull bar and sleeve pipe；The head of the pull bar is fixed on brake pedal, the pull bar
Afterbody is arranged in described sleeve pipe and can slid axially in described sleeve pipe；
Goniometer, the goniometer is provided with outer corner measurement mechanism and connecting pole；
Displacement meter geometrical clamp, one end of the displacement meter geometrical clamp is connected with the outer corner measurement mechanism, and the displacement meter is fixed
The other end of folder is clamped in described sleeve pipe；When brake pedal is moved, the displacement meter rotates simultaneously by the center of circle of retaining part
The displacement meter geometrical clamp is driven to rotate, the outer corner measurement mechanism indicates institute according to the rotation of the displacement meter geometrical clamp
State the anglec of rotation of displacement meter；
The adjustment mechanism in mounting seat is fixed on, the adjustment mechanism is connected with the connecting pole, for adjusting the angle
The position of meter.
2. brake-pedal travel measurement apparatus according to claim 1, it is characterised in that the adjustment mechanism includes：
First adjusting lever, the first geometrical clamp, the second adjusting lever, the second geometrical clamp and fixed seat；
The connecting pole is connected by first geometrical clamp with one end of first adjusting lever, first adjusting lever it is another
One end is connected by second geometrical clamp with second adjusting lever, and second adjusting lever is arranged in the fixed seat,
The fixed seat is fixed in the mounting seat；
Position and/or second geometrical clamp of first geometrical clamp on first adjusting lever is adjusted to adjust described second
Position on whole bar, can adjust the position of the goniometer.
3. brake-pedal travel measurement apparatus according to claim 1, it is characterised in that the pull bar is provided with scale.
4. brake-pedal travel measurement apparatus according to claim 1, it is characterised in that the mounting seat is provided with use
In the magnet with the adhesive of cabin floor.
5. the brake-pedal travel measurement apparatus according to any one of Claims 1 to 4, it is characterised in that the pull bar
Head is connected to the medium position of the side of brake pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187370.4A CN106950050B (en) | 2017-03-24 | 2017-03-24 | Brake-pedal travel measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187370.4A CN106950050B (en) | 2017-03-24 | 2017-03-24 | Brake-pedal travel measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106950050A true CN106950050A (en) | 2017-07-14 |
| CN106950050B CN106950050B (en) | 2018-12-21 |
Family
ID=59473766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710187370.4A Expired - Fee Related CN106950050B (en) | 2017-03-24 | 2017-03-24 | Brake-pedal travel measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106950050B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727033A (en) * | 2017-10-27 | 2018-02-23 | 燕山大学 | A kind of automobile pedal travel test device and method |
| CN109115148A (en) * | 2018-09-27 | 2019-01-01 | 长春东离合器股份有限公司 | Automobile pedal travel test device |
| CN109520456A (en) * | 2018-03-16 | 2019-03-26 | 陕西飞机工业（集团）有限公司 | A kind of measuring device of operating mechanism |
| CN111016856A (en) * | 2019-11-15 | 2020-04-17 | 中国北方车辆研究所 | Rapid fixing device for pedal stroke sensor of wheeled vehicle |
| CN111473757A (en) * | 2020-04-10 | 2020-07-31 | 一汽奔腾轿车有限公司 | Pedal travel data compensation method in braking test |
| CN111562115A (en) * | 2020-05-28 | 2020-08-21 | 安徽江淮汽车集团股份有限公司 | Clutch pedal operability measuring device |
| CN111721253A (en) * | 2020-06-28 | 2020-09-29 | 安徽江淮汽车集团股份有限公司 | Stroke detection device and method for clutch pedal |
| CN112345338A (en) * | 2020-09-22 | 2021-02-09 | 航天科工防御技术研究试验中心 | Displacement meter installation component |
| CN113029077A (en) * | 2019-12-25 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Pedal travel testing method and system |
| CN113335240A (en) * | 2021-04-20 | 2021-09-03 | 北京汽车集团越野车有限公司 | Tool for adjusting stay wire displacement sensor |
| CN113639686A (en) * | 2021-08-10 | 2021-11-12 | 安徽江淮汽车集团股份有限公司 | Stroke measuring device |
| CN115218840A (en) * | 2022-05-30 | 2022-10-21 | 广州汽车集团股份有限公司 | Clutch pedal stroke curve measuring method and device |
| CN116147939A (en) * | 2023-04-20 | 2023-05-23 | 山东方力汽车零部件有限公司 | Automobile pedal testing structure |
| CN116907403A (en) * | 2023-09-13 | 2023-10-20 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Continuous displacement measuring device for large-stroke sliding assembly of synchronous automatic clutch |
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| CN102818547A (en) * | 2011-06-07 | 2012-12-12 | 上汽通用五菱汽车股份有限公司 | Tool for measuring travel of vehicular clutch pedal |
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| JPS6126635U (en) * | 1984-07-24 | 1986-02-17 | 日産ディーゼル工業株式会社 | Vehicle accelerator pedal opening detection device |
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| CN101545759A (en) * | 2009-04-24 | 2009-09-30 | 长安大学 | Vehicle brake pedal travel measuring device and measuring method thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727033A (en) * | 2017-10-27 | 2018-02-23 | 燕山大学 | A kind of automobile pedal travel test device and method |
| CN109520456A (en) * | 2018-03-16 | 2019-03-26 | 陕西飞机工业（集团）有限公司 | A kind of measuring device of operating mechanism |
| CN109115148A (en) * | 2018-09-27 | 2019-01-01 | 长春东离合器股份有限公司 | Automobile pedal travel test device |
| CN111016856A (en) * | 2019-11-15 | 2020-04-17 | 中国北方车辆研究所 | Rapid fixing device for pedal stroke sensor of wheeled vehicle |
| CN113029077A (en) * | 2019-12-25 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Pedal travel testing method and system |
| CN111473757A (en) * | 2020-04-10 | 2020-07-31 | 一汽奔腾轿车有限公司 | Pedal travel data compensation method in braking test |
| CN111562115B (en) * | 2020-05-28 | 2021-06-08 | 安徽江淮汽车集团股份有限公司 | Clutch pedal operability measuring device |
| CN111562115A (en) * | 2020-05-28 | 2020-08-21 | 安徽江淮汽车集团股份有限公司 | Clutch pedal operability measuring device |
| CN111721253A (en) * | 2020-06-28 | 2020-09-29 | 安徽江淮汽车集团股份有限公司 | Stroke detection device and method for clutch pedal |
| CN111721253B (en) * | 2020-06-28 | 2021-10-01 | 安徽江淮汽车集团股份有限公司 | Stroke detection device and method for clutch pedal |
| CN112345338A (en) * | 2020-09-22 | 2021-02-09 | 航天科工防御技术研究试验中心 | Displacement meter installation component |
| CN113335240A (en) * | 2021-04-20 | 2021-09-03 | 北京汽车集团越野车有限公司 | Tool for adjusting stay wire displacement sensor |
| CN113639686A (en) * | 2021-08-10 | 2021-11-12 | 安徽江淮汽车集团股份有限公司 | Stroke measuring device |
| CN115218840A (en) * | 2022-05-30 | 2022-10-21 | 广州汽车集团股份有限公司 | Clutch pedal stroke curve measuring method and device |
| CN116147939A (en) * | 2023-04-20 | 2023-05-23 | 山东方力汽车零部件有限公司 | Automobile pedal testing structure |
| CN116907403A (en) * | 2023-09-13 | 2023-10-20 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Continuous displacement measuring device for large-stroke sliding assembly of synchronous automatic clutch |
| CN116907403B (en) * | 2023-09-13 | 2024-03-01 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Continuous displacement measuring device for large-stroke sliding assembly of synchronous automatic clutch |
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| Publication number | Publication date |
|---|---|
| CN106950050B (en) | 2018-12-21 |
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