CN112362575B - Windshield wiper adhesive tape friction characteristic measurement platform - Google Patents
Windshield wiper adhesive tape friction characteristic measurement platform Download PDFInfo
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- CN112362575B CN112362575B CN202011209987.XA CN202011209987A CN112362575B CN 112362575 B CN112362575 B CN 112362575B CN 202011209987 A CN202011209987 A CN 202011209987A CN 112362575 B CN112362575 B CN 112362575B
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- glass plate
- windshield wiper
- friction
- arm rod
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- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 239000002390 adhesive tape Substances 0.000 title claims description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 239000011521 glass Substances 0.000 claims abstract description 39
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000007665 sagging Methods 0.000 abstract description 2
- 230000001680 brushing effect Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of windshield wiper rubber strips, and particularly relates to a windshield wiper rubber strip friction characteristic measurement platform, which comprises the following components: a machine; a rotary bracket which is rotatably arranged on the machine table; a glass plate disposed on the rotating bracket; a driving mechanism connected to and linked with the rotating bracket, the driving mechanism being operated according to a control signal; a base fixed above the glass plate with a distance; the cantilever comprises a first arm rod fixed on the base and a second arm rod pivoted on a pivot shaft and capable of swinging freely by taking the pivot shaft as a circle center, the end part of the second arm rod clamps the windshield wiper rubber strip by a clamping mechanism, the test friction surface of the windshield wiper rubber strip faces the top surface of the glass plate, and the test friction surface is pressed against the top surface of the glass plate by the natural sagging of the weight of the second arm rod; and a sensor electrically connected to the cantilever for collecting the friction characteristics of the wiper strip. This structure can obtain more realistic friction data.
Description
Technical Field
The invention belongs to the technical field of windshield wiper rubber strips, and particularly relates to a windshield wiper rubber strip friction characteristic measuring platform.
Background
Wiper systems are basically equipped for cleaning the windshield of a vehicle from water droplets, snow, mud, sand, dust, small insects and other contaminants to clear the view of the driver. Therefore, the windshield wiper performance is important in relation to the driving safety, especially the taiwan is a rainy climate.
Friction and abrasion between the windshield wiper strip and the windshield of the automobile may cause poor brushing effect and vibration and noise problems, thereby affecting the vision and comfort of the driver and passengers and even compromising the driving safety. Therefore, the rubbing action of the wiper strip on the glass is an important subject.
In the function of brushing rain, the function of the windshield wiper rubber strip is not to completely brush out the rain, but to uniformly form a layer of water film in front of the windshield, so that when the automobile runs, the front object can smoothly reflect the light into the eyes of a driver. Therefore, the adhesive tape must maintain uniform pressure and proper angle to form uniform water film, so as to perform the normal function of the windshield wiper in various environments and prolong the service life. Poor adhesive tape often causes scratches on the windshield or abnormal refraction of the water film on the glass surface, which results in trouble for the driver's vision.
In the relative movement of the wiper strip and the windshield, the control of the wiping action is often the key to the success or failure of the design of the wiper. Because the friction force of the windshield wiper rubber strip is a nonlinear behavior generated by external interference of the system, the improper friction phenomenon often causes vibration and noise on the wiping, and the brushing effect is influenced by the connection. Therefore, the friction phenomenon of the windshield wiper strip needs to be understood in depth, and various parameters can be allocated to the optimal combination in design and process to solve the above-mentioned problems and improve the windshield wiper performance.
Among the parameters affecting the performance of the wiper, the magnitude of the load (or forward force) to which the strip is subjected directly affects the wiping effect of the wiper: if the load is too large, the friction between the windshield wiper and the windshield is too high, and the windshield wiper consumes more horsepower, and can shake and jump to cause poor brushing effect and generate larger noise; otherwise, if the load of the windshield wiper is too small, the residual water film is too thick, and the sweeping effect cannot be achieved. However, since the common wiper strip uses rubber as a main material, the friction coefficient is greatly affected by the load and does not conform to the coulomb friction first law or the Amontons' first Law (amonitens' first Law). Therefore, the research of the friction coefficient of the wiper strip under different loads is necessary.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a windshield wiper adhesive tape friction characteristic measuring platform, which can be attached to the surface of glass in a self-adaptive angle by means of the windshield wiper adhesive tape clamped by a movable pivot to measure friction characteristics.
The invention is realized by the following technical scheme: a wiper strip friction characteristic measurement platform comprising:
the machine table is used for providing support for each component and is provided with a platform;
the rotating bracket is rotationally connected with the platform;
the glass plate is movably connected to the rotating bracket;
the driving mechanism is arranged on the platform and used for driving the rotating bracket;
the base is arranged on the platform and is positioned above the glass plate;
the cantilever comprises a first arm rod fixed on the base, one side end part of the first arm rod is hinged with a second arm rod through a pivot, and one side end part of the second arm rod far away from the first arm rod is used for clamping a windshield wiper adhesive tape through a clamping mechanism; during measurement, the test friction surface of the windshield wiper rubber strip faces the top surface of the glass plate;
and the sensor is electrically connected to the cantilever and used for collecting friction characteristics generated by the windshield wiper adhesive tape and transmitted to the cantilever when the glass plate rotates.
Further, the driving mechanism is a rotation torque force provided by a motor and a speed reducing mechanism.
Further, the connection between the rotating bracket and the driving mechanism adopts a belt or a chain.
Further, the four corners of the machine are provided with feet with height adjusting screws.
Further, the base is fixedly arranged on the platform after crossing the glass plate, and the base is positioned at the symmetrical center of the platform.
Further, the clamping mechanism comprises a weighting mechanism for placing weights, and the weights attached to the clamping mechanism are overlapped or removed to control the weight of the windshield wiper rubber on the glass plate.
Further, the first arm rod system is fixed on the base with an attack angle adjusting mechanism, and the attack angle adjusting mechanism comprises: the cantilever is provided with a pair of vertical sliding grooves which are parallel to each other and a lock hole positioned on the extending path of the central line of the vertical sliding grooves, and is adjusted and fixed relative to the top surface of the glass plate by two bolts at the intersection of the pair of horizontal sliding grooves and the pair of vertical sliding grooves and a central bolt penetrating through the lock hole.
Furthermore, an angle meter is arranged on the extending path of the upright locking plate so as to obtain the attack angle adjustment angle of the wiper rubber strip clamped by the cantilever in real time.
The beneficial effects of the invention are as follows: the invention uses a first arm lever fixed on the base and a second arm lever which swings freely by taking the pivot as the center of a circle to clamp the windshield wiper adhesive tape, so that the windshield wiper adhesive tape is tightly abutted against the top surface of the glass plate, and the structure can obtain more real friction data; the invention uses the weighting mechanism of the clamping mechanism, and can control the pressure applied to the glass plate by the windshield wiper adhesive tape. The invention uses the attack angle adjusting mechanism, can adjust and fix the inclined angle of the cantilever relative to the top surface of the glass plate, and is close to the actual application.
Drawings
FIG. 1 is a perspective view of a windshield wiper strip friction characteristic measuring platform according to an embodiment of the present invention;
FIG. 2 is a front view of the embodiment of FIG. 1 of the present invention;
FIG. 3 is a side view of the embodiment of FIG. 1 of the present invention;
FIG. 4 is a schematic view of another horizontal angle view of the present invention;
FIG. 5 is a perspective view of the combination of the cantilever, clamping mechanism, weighting mechanism and angle gauge of the present invention;
FIG. 6 is a schematic view of an attack angle adjustment mechanism according to the present invention;
in the figure, 1, a machine table, 11, a platform, 12, a foot seat, 2, a rotating bracket, 3, a glass plate, 4, a driving mechanism, 5, a base, 6, a cantilever, 61, a first arm lever, 62, a second arm lever, 63, a pivot, 64, a clamping mechanism, 641, a weighting mechanism, 7, a sensor, 8, an attack angle adjusting mechanism, 81, an L-shaped connecting plate, 811, a horizontal chute, 82, an upright locking plate, 821, a vertical chute, 822, a locking hole, 83, a bolt, 831, a center bolt, 9, an angle gauge, A, an attack angle, C, a control signal, M, a motor and a speed reducing mechanism, R and a wiper rubber strip.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A framework is established by using the rotating platform and the motor and glass as main brushing platform. The external base body is matched with the aluminum extruded strips and various functional aluminum pieces to establish the appearance base. The wiper adhesive tape is different in brushing conditions of different downward pressures and attack angles, and the equipment detects actual downward lateral force by using a load cell and detects actual downward pressure by using a weighing machine and a weight.
The friction force measurement is carried out by using a load element matched with an amplifying circuit and combining with software matched with the original factory to measure, and the load element is arranged at the suspension to measure the lateral force. The data acquisition and the analysis of the lateral friction force are carried out on various experimental samples, and the quality of the samples is evaluated.
The embodiments of the present invention will be described in detail below with reference to the drawings, which are mainly simplified schematic diagrams illustrating the basic structure of the present invention by way of illustration only, and thus only the components related to the present invention are labeled in the drawings, and the components shown are not drawn in terms of the number, shape, size ratio, etc. of the embodiments, and the specification dimensions of the embodiments are optional designs, and the layout of the components may be more complicated.
Additionally, the drawings are not necessarily to scale, for example, the dimensions of some of the elements in the drawings may be increased or decreased to help improve understanding of the various embodiments. Likewise, some components and/or operations may be divided into different blocks or combined into a single block for the purpose of discussing certain embodiments. Furthermore, while specific embodiments have been illustrated in the drawings and described in detail below, it will be apparent to those skilled in the art that modifications, equivalents, and alternatives are contemplated as falling within the scope of the appended claims.
As shown in fig. 1 to 6, a windshield wiper rubber strip friction characteristic measurement platform includes:
the machine table 1 is used for supporting all components of the windshield wiper adhesive tape friction characteristic measuring platform, and the machine table 1 is provided with a platform 11; as an improvement of the embodiment, the feet 12 with height adjusting screws are arranged at the corners of the machine table 1, and the height of the adjusting platform 11 relative to the ground can be achieved by adjusting the feet 12, so that the height suitable for measuring by operators can be obtained.
The rotary bracket 2 is rotatably connected with the platform 11.
And the glass plate 3 is movably connected to the rotating bracket 2, and the glass plate 3 can be detached from the rotating bracket 2.
A driving mechanism 4 mounted on the platform 11 for driving the rotating bracket 2, the driving mechanism 4 being operated according to a control signal C; as an alternative to this embodiment, the driving mechanism 4 is a rotation torque provided by a motor and a speed reducing mechanism M, and the transmission connection manner between the rotation bracket 2 and the driving mechanism 4 may be a belt or a chain.
A base 5 mounted on the platform 11 above the glass plate 3; further, to facilitate the measurement of the friction characteristics of the wiper strip, the base 5 spans from the glass plate 3, and the base 5 is located at the center of symmetry of the platform 11. In the present measuring platform, the base 5 may be provided on the side surface of the glass plate 3, so long as the wiper strip R is ensured to fall onto the glass plate 3.
The cantilever 6 comprises a first arm rod 61 fixed on the base 5, one side end part of the first arm rod 61 is hinged with a second arm rod 62 through a pivot 63, the second arm rod 62 can swing freely by taking the pivot 63 as the center of a circle, and the end part of the second arm rod 62, which is far away from one side of the first arm rod 61, clamps a windshield wiper rubber strip R through a clamping mechanism 64; during measurement, the test friction surface of the windshield wiper rubber R faces the top surface of the glass plate 3; the test friction surface of the wiper strip R is pressed against the top surface of the glass plate 3 by the natural sagging of the weight of the second arm 62.
The sensor 7 is electrically connected to the cantilever 6, and is used for collecting friction characteristics generated by the wiper rubber R and transmitted to the cantilever 6 when the glass plate 3 rotates.
As shown in fig. 5, as a modification of the present embodiment, the holding mechanism 64 includes a weight mechanism 641 for placing weights, and the weight attached to the holding mechanism 64 is superposed or removed to control the weight of the wiper strip applied to the glass plate 3, i.e., to control the pressure applied to the glass plate 3 by the wiper strip.
As shown in fig. 5 and 6, as a modification of the present embodiment, the first arm 61 is fixed to the base 5 by an attack angle adjustment mechanism 8, and the attack angle adjustment mechanism 8 includes: an L-shaped connecting plate 81 provided on the base 5 and having a horizontal sliding groove 811 formed at a height and a vertical sliding groove 82 formed at the first arm 61, wherein a non-horizontal sliding groove 811 side of the L-shaped connecting plate 81 is fixed to the base 5, a pair of vertical sliding grooves 821 parallel to each other and a locking hole 822 formed on a line extending along a center line of the pair of vertical sliding grooves 821 of the vertical sliding plate 82 are formed in the vertical sliding plate 82, and a non-locking hole 822 side of the vertical sliding plate 82 is fixed to the first arm 61, and as shown in fig. 5 and 6, an inclination angle of the cantilever 6 with respect to the top surface of the glass plate 3 is adjusted and fixed by two bolts 83 screwed at an intersection of the pair of horizontal sliding grooves 811 and the pair of vertical sliding grooves 821 and a center bolt 831 penetrating the locking hole 822.
As shown in fig. 1 to 6, as a modification of the present embodiment, an angle meter 9 is provided on the extending path of the upright lock piece 82 to know in real time the adjustment angle of attack angle a of the wiper strip held by the cantilever 6. Attack angle a is the angle between the center plane of cantilever 6 and the plane passing through the line of contact of glass sheet 3.
The foregoing embodiments are merely illustrative of the principles, features and advantages of the invention, and are not intended to limit the scope of the invention, which may be modified or varied by those skilled in the art without departing from the spirit and scope of the invention. Any equivalent changes and modifications that can be made using the present disclosure are intended to be covered by the following claims. Accordingly, the scope of the invention is to be determined by the appended claims.
Claims (6)
1. The utility model provides a windshield wiper adhesive tape friction characteristic measurement platform which characterized in that includes:
a machine (1) for supporting each component, the machine (1) having a platform (11);
the rotating bracket (2) is rotationally connected with the platform (11);
a glass plate (3) movably connected to the rotary bracket (2);
the driving mechanism (4) is arranged on the platform (11) and is used for driving the rotating bracket (2);
a base (5) mounted on the platform (11) above the glass plate (3);
the cantilever (6) comprises a first arm rod (61) fixed on the base (5), one side end part of the first arm rod (61) is hinged with a second arm rod (62) through a pivot (63), and one side end part of the second arm rod (62) far away from the first arm rod (61) is used for clamping a windshield wiper adhesive tape through a clamping mechanism (64); during measurement, the test friction surface of the windshield wiper rubber strip faces the top surface of the glass plate (3); said holding means (64) comprises a weighting means (641) for placing weights, for controlling the weight of the wiper strip applied to said glass plate (3) by superimposing or removing weights attached to said holding means (64);
the first arm (61) is fixed on the base (5) by an attack angle adjusting mechanism (8), and the attack angle adjusting mechanism (8) comprises: an L-shaped connecting plate (81) provided with a high horizontal sliding groove (811) and a low horizontal sliding groove (811) and an upright locking plate (82) provided on the first arm (61), wherein the upright locking plate (82) is provided with a pair of vertical sliding grooves (821) which are parallel to each other and a locking hole (822) positioned on the extending path of the central line of the pair of vertical sliding grooves (821) of the upright locking plate (82), and the cantilever (6) is adjusted and fixed at an inclined angle relative to the top surface of the glass plate (3) by means of two bolts (83) which are screwed at the intersection of the pair of horizontal sliding grooves (811) and the pair of vertical sliding grooves (821) and a central bolt (831) which penetrates through the locking hole (822);
and the sensor (7) is electrically connected to the cantilever (6) and is used for collecting friction characteristics generated by the windshield wiper adhesive tape and transmitted to the cantilever (6) when the glass plate (3) rotates.
2. The platform according to claim 1, wherein the driving mechanism (4) is a motor and a reduction mechanism for providing a rotational torque.
3. The platform for measuring the friction characteristics of the wiper strip according to claim 1, wherein the connection between the rotating bracket (2) and the driving mechanism (4) is a belt or a chain.
4. The windshield wiper strip friction characteristic measurement platform according to claim 1, wherein feet (12) with height adjusting screws are arranged at four corners of the machine table (1).
5. The windshield wiper strip friction characteristic measurement platform according to claim 1, wherein the base (5) is fixedly arranged on the platform (11) after crossing the glass plate (3), and the base (5) is positioned at the symmetrical center of the platform (11).
6. The platform for measuring the friction characteristics of the wiper strip according to claim 1, wherein an angle meter (9) is arranged on the extending path of the upright locking plate (82) so as to know the attack angle adjustment angle of the wiper strip clamped by the cantilever (6) in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209987.XA CN112362575B (en) | 2020-11-03 | 2020-11-03 | Windshield wiper adhesive tape friction characteristic measurement platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209987.XA CN112362575B (en) | 2020-11-03 | 2020-11-03 | Windshield wiper adhesive tape friction characteristic measurement platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112362575A CN112362575A (en) | 2021-02-12 |
| CN112362575B true CN112362575B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011209987.XA Active CN112362575B (en) | 2020-11-03 | 2020-11-03 | Windshield wiper adhesive tape friction characteristic measurement platform |
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| CN (1) | CN112362575B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820001B (en) * | 2021-10-12 | 2023-07-18 | 上海工程技术大学 | Experimental device for be used for testing windscreen wiper and wind window friction vibration noise |
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| CN111638126A (en) * | 2020-05-20 | 2020-09-08 | 哈尔滨工业大学 | Experimental device for testing friction self-excited vibration of rubber material |
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2020
- 2020-11-03 CN CN202011209987.XA patent/CN112362575B/en active Active
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|---|---|---|---|---|
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| RU61423U1 (en) * | 2006-10-24 | 2007-02-27 | Государственное образовательное учреждение высшего профессионального образования Красноярский государственный технический университет (КГТУ) | FRICTION MACHINE |
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| CN112362575A (en) | 2021-02-12 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Measurement Platform for Friction Characteristics of Wiper Rubber Strips Effective date of registration: 20231106 Granted publication date: 20230929 Pledgee: Bank of Nanjing Co.,Ltd. Xuzhou Branch Pledgor: Jiangsu Yunrui Automotive Electrical System Co.,Ltd. Registration number: Y2023980064054 |
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