Friction coefficient measuring device and system

Abstract

The utility model relates to a friction coefficient measuring device and system, the friction coefficient measuring device comprises a main unit, a plurality of adsorption units, a height adjustment unit, a driving unit, a thrust measuring unit and an installation unit, the main unit is arranged parallel to the glass; the plurality of adsorption units are arranged respectively below the main unit, the tops of the plurality of adsorption units are located above the main unit and connected to an external vacuum device. The utility model has the advantages that the main unit can be adsorbed on the corresponding glass by the adsorption unit so as to fix the glass; the friction force of the wiper rubber strip on the glass is measured by the coordinated use of the thrust measuring unit, the driving unit and the installation unit, the driving unit drives the thrust measuring unit and the installation unit to move along the glass surface at a uniform speed, avoiding the problem that the traction speed is not easy to be constant when using a spring balance or other force measuring devices, and improving the measurement stability and accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field related to performance testing of automobile wiper blades, and in particular to a friction coefficient measuring device and system. Background Art

[0002] In order to improve the performance of wiper blades on cars, the current research directions are mainly focused on the curvature of glass, the curvature of wiper blades, and the structure of wiper blades. There are few studies on the matching of glass and rubber strips, such as the friction between glass and wiper blades, and the influence of clean water and detergent on the friction between glass and wiper blades. The magnitude of the friction between the wiper blade and the glass will not only affect the performance of the wiper motor but also the performance of the wiper blade on the car. Inappropriate friction will result in poor wiping, wiper blade shaking, abnormal noise and other undesirable phenomena.

[0003] At present, the friction coefficient between the wiper rubber strip and the glass is generally tested by first assembling the wiper arm on a freely rotatable output shaft, to which the wiper blade is connected. Under the pressure of the wiper arm, the wiper rubber strip on the wiper blade is pressed against the glass. Then a spring scale or other force measuring device is used to act vertically on the middle of the wiper blade, pulling the wiper blade to perform uniform circular motion around the output shaft. The friction coefficient between the wiper rubber strip and the glass is obtained by the traction force and the wiper arm pressure.

[0004] However, when using a spring scale or other force measuring device, it is not easy to keep the traction speed constant. In addition, it is not easy to keep the direction of the traction force perpendicular to the wiper strip during movement. As a result, the error is very large and it is difficult to meet the actual testing and use requirements.

[0005] At present, no effective solution has been proposed for the problem in the related technology that the traction speed is difficult to keep constant and the error is very large. Utility Model Content

[0006] The utility model aims to provide a friction coefficient measuring device and system in view of the deficiencies in the prior art, so as to solve the problem that the traction speed is not easy to keep constant and the error is very large in the related art.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] In a first aspect, a friction coefficient measuring device is provided, which is used to measure the friction coefficient between a wiper blade and a glass, comprising:

[0009] A main body unit, wherein the main body unit is arranged parallel to the glass;

[0010] A plurality of adsorption units, wherein the plurality of adsorption units are respectively arranged below the main body unit, and the top ends of the plurality of adsorption units are located above the main body unit and connected to an external vacuum device, so as to fix the main body unit to the glass under the action of the external vacuum device;

[0011] A height adjustment unit, the height adjustment unit is arranged at the top of the main unit and connected to the main unit;

[0012] A driving unit, wherein the main body end of the driving unit is movably disposed above the main body unit, is located inside the height adjustment unit, and is rotatably connected to the height adjustment unit, and the driving end of the driving unit is located below the main body unit, and is used for reciprocating in the vertical direction under the action of the height adjustment unit;

[0013] A thrust measuring unit, which is movably disposed below the main unit and connected to the driving end of the driving unit, and is used to reciprocate in a vertical direction and rotate under the action of the driving unit;

[0014] The mounting unit is movably arranged at the bottom end of the thrust measuring unit, abuts against the thrust measuring unit, and is detachably connected to the wiper blade, and is used for reciprocating in the vertical direction and rotating under the action of the thrust measuring unit.

[0015] In some embodiments, the main unit includes:

[0016] A main body component, wherein the main body component is arranged parallel to the glass, the height adjustment unit is arranged above the main body component, and the adsorption unit, the thrust measurement unit, and the installation unit are arranged below the main body component;

[0017] A first through-slot element is disposed at the center of the main body element and penetrates the main body element, and is used for allowing the driving end of the driving unit to pass through the main body element.

[0018] In some of the embodiments, the main unit further comprises:

[0019] A plurality of second through-slot elements are arranged around the main body element and respectively penetrate the main body element, so as to allow the adsorption unit to pass through the main body element.

[0020] In some of the embodiments, the adsorption unit comprises:

[0021] The adsorption element is arranged below the main body unit, the top of the adsorption element is located above the main body unit and is connected to an external vacuum device, so as to fix the main body unit to the glass under the action of the external vacuum device.

[0022] In some of the embodiments, the height adjustment unit comprises:

[0023] A first support element, which is disposed at the top of the main body unit and connected to the main body unit;

[0024] A first rotating element, the first rotating element is disposed through the first bracket element;

[0025] A control element is rotatably connected to the first rotating element and the driving unit respectively, and is used to drive the driving unit to reciprocate in a vertical direction.

[0026] In some of the embodiments, the height adjustment unit further comprises:

[0027] A first sliding element, the first sliding element is disposed through the first bracket element;

[0028] A second sliding element, wherein the second sliding element is connected to the first sliding element and the driving unit respectively, and is used for reciprocating along the vertical direction under the action of the operating element.

[0029] In some embodiments, the driving unit includes:

[0030] A driving element, wherein the main end of the driving element is movably arranged above the main unit, located inside the height adjustment unit, and rotatably connected to the height adjustment unit, and the driving end of the driving unit is located below the main unit and connected to the thrust measuring unit, and is used for reciprocating in the vertical direction under the action of the height adjustment unit to drive the thrust measuring unit to rotate.

[0031] In some of the embodiments, the thrust measurement unit comprises:

[0032] A second support element, which is movably disposed below the main body unit and connected to the driving end of the driving unit, and is used for reciprocating in a vertical direction and rotating under the action of the driving unit;

[0033] a second rotating element, the second rotating element being disposed at the bottom end of the second bracket element and being rotatably connected to the mounting unit;

[0034] a third support element, the third support element being disposed at the bottom end of the second support element and connected to the second support element;

[0035] A plurality of thrust measuring elements are respectively arranged at the bottom ends of the third bracket element and are in contact with the wiper blade.

[0036] In some of the embodiments, the mounting unit comprises:

[0037] a third rotating element, the third rotating element being disposed at the bottom end of the thrust measuring unit and being rotationally connected to the thrust measuring unit;

[0038] A mounting element is arranged at the bottom end of the third rotating element, abuts against the thrust measuring unit, and is detachably connected to the wiper blade, and is used for reciprocating in a vertical direction and rotating under the action of the thrust measuring unit.

[0039] In a second aspect, a friction coefficient measurement system is provided, comprising:

[0040] The friction coefficient measuring device as described in the first aspect;

[0041] A vacuum device, the vacuum device being connected to the plurality of adsorption units of the friction coefficient measuring device;

[0042] A pressure measuring device, which is detachably connected to the wiper blade and is used to measure the pressure value;

[0043] A remote control device is connected to the driving unit, the thrust measuring unit, the vacuum device and the pressure measuring device of the friction coefficient measuring device respectively, and is used to calculate and obtain the friction coefficient.

[0044] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0045] The utility model discloses a friction coefficient measuring device and system. A main unit can be adsorbed on a corresponding glass by an adsorption unit so as to fix the glass. The friction force of the wiper rubber strip on the glass is measured by the cooperation between a thrust measuring unit, a driving unit and a mounting unit. The driving unit drives the thrust measuring unit and the mounting unit to move along the glass surface at a uniform speed, thus avoiding the problem that the traction speed is not easy to be constant when using a spring balance or other force measuring devices, and improving the measurement stability and accuracy. The height adjustment unit can be used to adjust the distance between the wiper rubber strip and the glass, thus improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1It is a schematic diagram of the three-dimensional structure of the friction coefficient measuring device according to an embodiment of the utility model;

[0047] Figure 2 is a blow-up diagram of a friction coefficient measuring device according to an embodiment of the utility model;

[0048] Figure 3 It is a three-dimensional structural schematic diagram of a main unit according to an embodiment of the utility model;

[0049] Figure 4 It is a schematic diagram of the three-dimensional structure of the adsorption unit according to an embodiment of the utility model;

[0050] Figure 5 is an exploded view of a height adjustment unit according to an embodiment of the utility model;

[0051] Figure 6 is a schematic diagram of the three-dimensional structure of a driving unit according to an embodiment of the utility model;

[0052] Figure 7 It is a schematic diagram of the internal structure of part of the thrust measurement unit according to an embodiment of the utility model;

[0053] Figure 8 is a schematic diagram of the three-dimensional structure of the installation unit according to an embodiment of the utility model;

[0054] Fig. 9 This is a schematic diagram of the use state of the friction coefficient measuring device according to an embodiment of the utility model;

[0055] Fig.10 It is a structural schematic diagram of a friction coefficient measurement system according to an embodiment of the utility model.

[0056] The reference numerals therein are: 100, friction coefficient measuring device;

[0057] 110, main body unit; 111, main body element; 112, first through-slot element; 113, second through-slot element;

[0058] 120. adsorption unit; 121. adsorption element;

[0059] 130, height adjustment unit; 131, first bracket element; 132, first rotating element; 133, operating element; 134, first sliding element; 135, second sliding element;

[0060] 140. driving unit; 141. driving element;

[0061] 150, thrust measuring unit; 151, second support element; 152, second rotating element; 153, third support element; 154, thrust measuring element;

[0062] 160. mounting unit; 161. third rotating element; 162. mounting element;

[0063] 200. Vacuum device; 300. Pressure measuring device; 400. Remote control device;

[0064] A. Glass; B. Wiper blades. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0066] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0067] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0068] Example 1

[0069] This embodiment relates to a friction coefficient measuring device of the utility model.

[0070] like Figure 1 , Figure 2As shown, a friction coefficient measuring device 100 is used to measure the friction coefficient between a wiper blade and glass, and includes a main unit 110, a plurality of adsorption units 120, a height adjustment unit 130, a drive unit 140, a thrust measurement unit 150, and a mounting unit 160. The main unit 110 is arranged parallel to the glass; the plurality of adsorption units 120 are respectively arranged below the main unit 110, and the top ends of the plurality of adsorption units 120 are located above the main unit 110 and connected to an external vacuum device, and are used to fix the main unit 110 to the glass under the action of the external vacuum device; the height adjustment unit 130 is arranged at the top end of the main unit 110 and connected to the main unit 110; the main end of the drive unit 140 is movably arranged above the main unit 110, and is located inside the height adjustment unit 130, and is rotatably connected to the height adjustment unit 130, and the drive end of the drive unit 140 is located at the main unit 110. The body unit 110 is provided below the body unit 110, and is used for reciprocating in the vertical direction under the action of the height adjustment unit 130; the thrust measuring unit 150 is movably arranged below the body unit 110, and is connected to the driving end of the driving unit 140, and is used for reciprocating in the vertical direction under the action of the driving unit 140 and rotating under the action of the driving unit 140; the mounting unit 160 is movably arranged at the bottom end of the thrust measuring unit 150, and is abutted against the thrust measuring unit 150 and is detachably connected to the wiper blade, and is used for reciprocating in the vertical direction under the action of the thrust measuring unit 150 and rotating under the action of the thrust measuring unit 150.

[0071] like Figure 3 As shown, the main unit 110 includes a main component 111 and a first through-slot component 112. The main component 111 is arranged parallel to the glass, a height adjustment unit 130 is arranged above the main component 111, and an adsorption unit 120, a thrust measurement unit 150, and a mounting unit 160 are arranged below the main component 111; the first through-slot component 112 is arranged at the center of the main component 111 and penetrates the main component 111, so as to allow the driving end of the driving unit 140 to pass through the main component 111.

[0072] Generally, the main body element 111 includes a central plate and at least two side plates, wherein the central plate is provided with a first through-groove element 112 ; a plurality of side plates are arranged around the central plate and are respectively connected to corresponding adsorption units 120 .

[0073] The cross section of the center plate is circular, equilateral triangle, square, regular polygon, etc.

[0074] Generally, the side panels are formed integrally with the center panel.

[0075] The size of the side plate matches the size of the center plate. Generally, the width of the side plate is not greater than the side length or diameter of the center plate, the length of the side plate is greater than the radial dimension of the center plate, and the thickness of the side plate is not greater than the thickness of the center plate.

[0076] Preferably, the number of the side panels is 3 to 5. More preferably, the number of the side panels is 4.

[0077] In some of the embodiments, when there are three side panels, the cross-section of the main body element 111 is in the shape of a three-pointed star.

[0078] In some of the embodiments, when there are four side panels, the cross-section of the main body element 111 is cross-shaped.

[0079] In some of the embodiments, when there are five side panels, the cross-section of the main body element 111 is in the shape of a five-pointed star.

[0080] In some of the embodiments, the main body element 111 is made of metal material, including but not limited to stainless steel and aluminum alloy.

[0081] In some of the embodiments, the main body component 111 is a main body support.

[0082] The cross section of the first through-groove element 112 is circular.

[0083] The size of the first through-groove element 112 matches the size of the main body element 111. Generally, the radial size of the first through-groove element 112 is smaller than the radial size of the center plate, and the axial size (such as depth) of the first through-groove element 112 is equal to the height (such as thickness) of the center plate.

[0084] In some embodiments, the first through-channel element 112 is a first through hole.

[0085] Furthermore, the main body unit 110 further includes a plurality of second through-slot elements 113 . The plurality of second through-slot elements 113 are disposed around the main body element 111 and respectively penetrate the main body element 111 , so as to allow the adsorption unit 120 to pass through the main body element 111 .

[0086] Specifically, the second through-groove element 113 is disposed through the corresponding side plate.

[0087] Generally, the second through-slot element 113 is disposed at an end of the side plate away from the center plate.

[0088] The cross section of the second through-groove element 113 is circular.

[0089] The size of the second through-groove element 113 matches the size of the main body element 111. Generally, the radial size of the first through-groove element 112 is smaller than the radial size of the side plate, and the axial size (such as depth) of the first through-groove element 112 is equal to the height (such as thickness) of the side plate.

[0090] The number of the second through-groove elements 113 matches the number of the side panels. Generally, the number of the second through-groove elements 113 is equal to the number of the side panels, that is, each side panel is provided with a second through-groove element 113 .

[0091] In some embodiments, the number of the second through-channel elements 113 is four.

[0092] In some of the embodiments, the second through-channel element 113 is a second through hole.

[0093] like Figure 4 As shown, the adsorption unit 120 includes an adsorption element 121. The adsorption element 121 is disposed below the main unit 110, and the top of the adsorption element 121 is located above the main unit 110 and connected to an external vacuum device, so as to fix the main unit 110 to the glass under the action of the external vacuum device.

[0094] Specifically, the adsorption element 121 is disposed below the main body element 111 , and the top end of the adsorption element 121 passes through the main body element 111 through the second through-groove element 113 and is connected to the main body element 111 .

[0095] More specifically, the adsorption element 121 is disposed below the side plate, and the top end of the adsorption element 121 passes through the side plate through the second through-groove element 113 and is connected to the side plate.

[0096] The adsorption element 121 is a structure with a round top and a conical bottom. Specifically, the adsorption element 121 includes an adsorption tube and an adsorption plate. The adsorption tube is connected to the second through-groove element 113, the top of the adsorption tube is located above the side plate, the bottom of the adsorption tube is located below the side plate, and is connected to an external vacuum device; the adsorption plate is arranged at the bottom of the adsorption tube and is connected to the adsorption tube.

[0097] The size of the adsorption tube matches the size of the second through-groove element 113. Generally, the radial size of the outer edge of the adsorption tube is equal to the radial size of the second through-groove element 113, and the axial size of the adsorption tube is greater than the axial size of the second through-groove element 113 (such as depth).

[0098] Generally, the longitudinal section of the adsorption disk is conical, truncated cone, or trapezoidal, that is, the radial dimension of the adsorption disk increases from its top end to its bottom end.

[0099] The size of the adsorption disk matches the size of the adsorption tube. Generally, the minimum radial dimension of the outer edge of the adsorption disk is equal to the radial dimension of the outer edge of the adsorption tube, the minimum radial dimension of the inner edge of the adsorption disk is equal to the radial dimension of the inner edge of the adsorption tube, and the axial dimension of the adsorption disk is smaller than the axial dimension of the adsorption tube.

[0100] The size of the adsorption disk matches the size of the main element 111. Generally, the maximum radial dimension of the outer edge of the adsorption disk is not less than the radial dimension of the side plate, and the axial dimension of the adsorption disk is greater than the height (such as thickness) of the side plate.

[0101] In some embodiments, the adsorption element 121 is fixedly connected to the main element 111, including but not limited to bolt connection.

[0102] In some embodiments, the adsorption element 121 is a vacuum suction cup.

[0103] like Figure 5 As shown, the height adjustment unit 130 includes a first support element 131, a first rotating element 132 and a control element 133. The first support element 131 is disposed at the top of the main unit 110 and connected to the main unit 110; the first rotating element 132 is disposed through the first support element 131; the control element 133 is rotatably connected to the first rotating element 132 and the driving unit 140, respectively, and is used to drive the driving unit 140 to reciprocate in the vertical direction.

[0104] Specifically, the first bracket element 131 is disposed at the top end of the main body element 111 and connected to the main body element 111 .

[0105] More specifically, the first bracket element 131 is disposed at the top end of the center plate and connected to the center plate.

[0106] The cross section of the first bracket element 131 is U-shaped. Specifically, the first bracket element 131 includes a first horizontal plate and two first vertical plates. The first horizontal plate is arranged above the center plate; the two first vertical plates are symmetrically arranged at the bottom end of the first horizontal plate and are respectively connected to the first horizontal plate and the center plate.

[0107] In some embodiments, the two first vertical plates are arranged perpendicular to the first horizontal plate.

[0108] The size of the first transverse plate matches the size of the main body element 111. Generally, the length and width of the first transverse plate are smaller than the radial size of the center plate, and the height of the first transverse plate is smaller than the height (eg, thickness) of the center plate.

[0109] The size of the first vertical plate matches the size of the main body element 111. Generally, the length and width of the first vertical plate are smaller than the radial size of the center plate, and the height of the first vertical plate is greater than the height (eg, thickness) of the center plate.

[0110] The size of the first vertical plate matches the size of the first horizontal plate. Generally, the length of the first vertical plate is equal to the width of the first horizontal plate, the width of the first vertical plate is smaller than the length of the first horizontal plate, and the height of the first vertical plate is greater than the height of the first horizontal plate.

[0111] In some embodiments, the first bracket element 131 is fixedly connected to the main body element 111, including but not limited to bolt connection.

[0112] In some embodiments, the first bracket element 131 is made of stainless steel.

[0113] The first rotating element 132 is disposed through the first transverse plate.

[0114] The cross section of the first rotating element 132 is circular.

[0115] The size of the first rotating element 132 matches the size of the first transverse plate. Generally, the diameter of the first rotating element 132 is smaller than the length and width of the first transverse plate, and the axial size of the first rotating element 132 is equal to the height of the first transverse plate.

[0116] In some embodiments, the first rotating element 132 is a threaded hole.

[0117] In some embodiments, the control element 133 includes a screw and a nut. The screw is rotatably connected to the first rotating element 132 and the driving unit 140 respectively, and is used to drive the driving unit 140 to reciprocate in the vertical direction; the nut is arranged at the top of the screw, located above the first horizontal plate, and connected to the screw, and is used to drive the screw to rotate.

[0118] The size of the screw rod matches the size of the first rotating element 132. Generally, the diameter of the screw rod is equal to the diameter of the first rotating element 132, and the axial dimension of the screw rod is greater than the axial dimension of the first rotating element 132.

[0119] The size of the nut matches the size of the first transverse plate. Generally, the radial size of the nut is not greater than the length and width of the first transverse plate, and the axial size of the nut is greater than the height of the first transverse plate.

[0120] The size of the nut matches the size of the screw. Generally, the radial size of the nut is larger than the diameter of the screw, and the axial size of the nut is smaller than the axial size of the screw.

[0121] In some of the embodiments, the control element 133 is made of stainless steel.

[0122] In some embodiments, the control element 133 is a control rod.

[0123] Furthermore, the height adjustment unit 130 further includes a first sliding element 134 and a second sliding element 135. The first sliding element 134 is disposed through the first bracket element 131; the second sliding element 135 is respectively connected to the first sliding element 134 and the driving unit 140, and is used for reciprocating along the vertical direction under the action of the control element 133.

[0124] Specifically, the first sliding element 134 is disposed through the first transverse plate.

[0125] The cross section of the first sliding element 134 is circular, elliptical, rectangular with rounded corners, etc.

[0126] The size of the first sliding element 134 matches the size of the first transverse plate. Generally, the radial size of the first sliding element 134 is smaller than the length and width of the first transverse plate, and the axial size of the first sliding element 134 is larger than the height of the first transverse plate.

[0127] The size of the first sliding element 134 matches the size of the first rotating element 132 . Generally, the radial size of the first sliding element 134 is smaller than the diameter of the first rotating element 132 , and the axial size of the first sliding element 134 is equal to the axial size of the first rotating element 132 .

[0128] In some embodiments, the first sliding element 134 is a sliding hole.

[0129] The cross section of the second sliding element 135 is circular, elliptical, rectangular with rounded corners, etc.

[0130] The size of the second sliding element 135 matches the size of the first sliding element 134. Generally, the radial size of the second sliding element 135 is equal to the radial size of the first sliding element 134, and the axial size of the second sliding element 135 is greater than the axial size of the first sliding element 134.

[0131] The size of the second sliding element 135 matches the size of the operating element 133. Generally, the radial size of the second sliding element 135 is smaller than the diameter of the screw, and the axial size of the second sliding element 135 is not larger than the axial size of the screw.

[0132] In some embodiments, the second sliding element 135 is made of stainless steel.

[0133] In some embodiments, the second sliding element 135 is a sliding rod.

[0134] like Figure 6As shown, the driving unit 140 includes a driving element 141. The main body end of the driving element 141 is movably disposed above the main body unit 110, and is located inside the height adjustment unit 130, and is rotatably connected to the height adjustment unit 130. The driving end of the driving unit 140 is located below the main body unit 110, and is connected to the thrust measurement unit 150, and is used to reciprocate in the vertical direction under the action of the height adjustment unit 130, and drive the thrust measurement unit 150 to rotate.

[0135] Specifically, the main end of the driving element 141 is movably arranged above the main element 111, and is located inside the first bracket element 131, and is connected to the control element 133 and the second sliding element 135. The driving end of the driving element 141 passes through the main element 111 through the first through-slot element 112.

[0136] More specifically, the main body end of the driving element 141 is movably disposed above the center plate and between the two first vertical plates, and the driving end of the driving element 141 is disposed below the center plate.

[0137] In some embodiments, the driving element 141 is rotationally connected to the operating element 133. For example, the driving element 141 is connected to the operating element 133 via a bearing seat.

[0138] In some embodiments, the driving element 141 is fixedly connected to the second sliding element 135 , including but not limited to a bolt connection.

[0139] In some embodiments, the driving element 141 is a driving motor.

[0140] like Figure 7 As shown, the thrust measuring unit 150 includes a second support element 151, a second rotating element 152, a third support element 153 and a plurality of thrust measuring elements 154. The second support element 151 is movably disposed below the main unit 110 and connected to the driving end of the driving unit 140, and is used to reciprocate in the vertical direction and rotate under the action of the driving unit 140; the second rotating element 152 is disposed at the bottom end of the second support element 151 and is rotatably connected to the mounting unit 160; the third support element 153 is disposed at the bottom end of the second support element 151 and is connected to the second support element 151; and a plurality of thrust measuring elements 154 are respectively disposed at the bottom end of the third support element 153 and are in contact with the wiper blade.

[0141] Specifically, the second bracket element 151 is movably disposed below the main body element 111 and is connected to the driving end of the driving element 141 .

[0142] More specifically, the second bracket element 151 is movably disposed below the center plate.

[0143] The cross section of the second bracket element 151 is rectangular.

[0144] The size of the second support element 151 matches the size of the main element 111. Generally, the length and width of the second support element 151 are smaller than the radial size of the main element 111, and the height of the second support element 151 is smaller than the height of the main element 111.

[0145] In some embodiments, the second support element 151 is fixedly connected to the driving element 141 , including but not limited to bolt connection.

[0146] In some embodiments, the second bracket element 151 is made of stainless steel.

[0147] In some of the embodiments, the second support element 151 is a support plate.

[0148] The cross section of the second rotating element 152 is convex. Specifically, the second rotating element 152 includes a first rotating groove and a second rotating groove. The first rotating groove is disposed at the top of the second bracket element 151 and is rotatably connected to the mounting unit 160; the second rotating groove is disposed inside the second bracket element 151 and is communicated with the first rotating groove and is rotatably connected to the mounting unit 160.

[0149] The size of the first rotation groove matches the size of the second support element 151. Generally, the diameter of the first rotation groove is smaller than the length and width of the second support element 151, and the axial dimension of the first rotation groove is smaller than the height of the second support element 151.

[0150] The size of the second rotation groove matches the size of the second bracket element 151. Generally, the diameter of the second rotation groove is smaller than the length and width of the second bracket element 151, and the axial size of the second rotation groove is smaller than the height of the second bracket element 151.

[0151] The size of the second rotating groove matches the size of the first rotating groove. Generally, the diameter of the second rotating groove is larger than the diameter of the first rotating groove, and the axial dimension of the second rotating groove is larger than the axial dimension of the first rotating groove.

[0152] The cross section of the third support element 153 is L-shaped. Specifically, the third support element 153 includes a second vertical plate and a second horizontal plate. The second vertical plate is disposed at the bottom end of the second support element 151 and connected to the second support element 151; the second horizontal plate is disposed at the bottom end of the second vertical plate and connected to the second vertical plate and the thrust measuring element 154, respectively.

[0153] The size of the second vertical plate matches the size of the second bracket element 151. Generally, the length of the second vertical plate is smaller than the length of the second bracket element 151, the width of the second vertical plate is smaller than the width of the second bracket element 151, and the height of the second vertical plate is greater than the height of the second bracket element 151.

[0154] The size of the second transverse plate matches the size of the second vertical plate. Generally, the length of the second transverse plate is equal to the length of the second vertical plate, the width of the second transverse plate is greater than the width of the second vertical plate, and the height of the second transverse plate is less than the height of the second vertical plate.

[0155] In some embodiments, the third support element 153 is fixedly connected to the second support element 151 , including but not limited to welding.

[0156] In some embodiments, the third bracket element 153 is made of stainless steel.

[0157] In some of the embodiments, the third support element 153 is a support frame.

[0158] A plurality of thrust measuring elements 154 are distributed along the length direction of the second transverse plate.

[0159] In some embodiments, there are three thrust measurement elements 154 .

[0160] In some of the embodiments, the thrust measurement element 154 is fixedly connected to the third bracket element 153 , including but not limited to bolt connection.

[0161] In some of the embodiments, the thrust measurement element 154 is a thrust sensor.

[0162] like Figure 8 As shown, the mounting unit 160 includes a third rotating element 161 and a mounting element 162. The third rotating element 161 is disposed at the bottom end of the thrust measuring unit 150 and is rotatably connected to the thrust measuring unit 150; the mounting element 162 is disposed at the bottom end of the third rotating element 161, abuts against the thrust measuring unit 150, and is detachably connected to the wiper blade, and is used to reciprocate in the vertical direction and rotate under the action of the thrust measuring unit 150.

[0163] Specifically, the third rotating element 161 is rotationally connected to the second rotating element 152 .

[0164] More specifically, the third rotating element 161 is rotatably connected to the first rotating groove and the second rotating groove respectively.

[0165] The cross section of the third rotating element 161 is convex. Specifically, the third rotating element 161 includes a first rotating rod and a second rotating rod. The first rotating rod is rotatably connected to the second rotating groove; the second rotating rod is rotatably connected to the first rotating groove, and is respectively connected to the first rotating rod and the mounting element 162.

[0166] The size of the first rotating rod matches the size of the second rotating groove. Generally, the diameter of the first rotating rod is equal to the diameter of the second rotating groove, and the axial dimension of the first rotating rod is equal to the axial dimension of the second rotating groove.

[0167] The size of the second rotating rod matches the size of the first rotating groove. Generally, the diameter of the second rotating rod is equal to the diameter of the first rotating groove, and the axial dimension of the second rotating rod is greater than the axial dimension of the first rotating groove.

[0168] In some of the embodiments, the third rotating element 161 is made of stainless steel.

[0169] The mounting element 162 has a rectangular cross-section.

[0170] The size of the mounting element 162 matches the size of the second rotating rod. Generally, the length and width of the mounting element 162 are greater than the diameter of the second rotating rod, and the height of the mounting element 162 is less than the axial size of the second rotating rod.

[0171] In some of the embodiments, the mounting element 162 is fixedly connected to the third rotating element 161 , including but not limited to welding.

[0172] In some of the embodiments, the mounting element 162 is made of stainless steel.

[0173] In some embodiments, the mounting element 162 is a mounting plate, wherein the mounting plate is provided with two mounting holes (not shown in the figure) for allowing external bolts to pass through the mounting element 162 .

[0174] like Fig. 9 As shown, the method of using the utility model is as follows:

[0175] (I) Measuring wiper blade pressure

[0176] Place wiper blade B on an external pressure measuring device to obtain the pressure value.

[0177] (2) Installing wiper blades

[0178] The wiper blade B is placed on the top of the mounting element 162 and fixed by bolt connection.

[0179] (III) Placing the main component 111

[0180] The main component 111 is placed on the glass A through the adsorption component 121 .

[0181] (IV) Connecting the vacuum device

[0182] Connecting the external vacuum device to the adsorption element 121;

[0183] The vacuum device draws suction to generate negative pressure in the adsorption element 121 , so that the adsorption element 121 is adsorbed on the glass A.

[0184] (V) Adjustment work

[0185] Twist the control element 133 to make it rotate along the circumference of the first rotating element 132, and drive the driving element 141 to move downward / upward in the vertical direction through the control element 133;

[0186] The driving element 141 drives the mounting element 162 to move correspondingly through the second bracket element 151 , and the distance between the wiper blade B and the glass A is adjusted through the mounting element 162 .

[0187] (VI) Measuring the coefficient of friction

[0188] The second support element 151 is driven to rotate by the driving element 141, and the second support element 151 drives the thrust measuring element 154 to rotate through the third support element 153;

[0189] When the thrust measuring element 154 contacts the mounting element 162, the mounting element 162 is driven to rotate correspondingly along the circumference of the second rotating element 152, and the wiper blade B is driven to move correspondingly along the surface of the glass A through the mounting element 162;

[0190] During the process, the thrust value of the wiper blade B on the surface of the glass A is obtained through the thrust measuring element 154, and the friction coefficient is obtained by dividing the thrust value by the pressure value.

[0191] The advantages of the utility model are that the main unit can be adsorbed on the corresponding glass by utilizing the adsorption unit, so as to fix the glass; the friction force of the wiper rubber strip on the glass is measured by utilizing the cooperation between the thrust measuring unit, the driving unit and the installation unit, and the driving unit drives the thrust measuring unit and the installation unit to move along the glass surface at a uniform speed, thereby avoiding the problem that the traction speed is difficult to be constant when using a spring balance or other force measuring devices, and improving the measurement stability and accuracy; the height adjustment unit can be used to adjust the distance between the wiper rubber strip and the glass, thereby improving the practicability of the device.

[0192] Example 2

[0193] This embodiment relates to a friction coefficient measurement system of the utility model.

[0194] like Fig.10 As shown, a friction coefficient measurement system includes the friction coefficient measurement device 100, the vacuum device 200, the pressure measurement device 300 and the remote control device 400 as described in Example 1. The vacuum device 200 is connected to the plurality of adsorption units 120 of the friction coefficient measurement device 100; the pressure measurement device 300 is detachably connected to the wiper blade for measuring the pressure value; the remote control device 400 is respectively connected to the driving unit 140, the thrust measurement unit 150, the vacuum device 200 and the pressure measurement device 300 of the friction coefficient measurement device 100 for calculating the friction coefficient.

[0195] Specifically, the vacuum device 200 is connected to the adsorption element 121 ; and the remote control device 400 is connected to the driving element 141 and the thrust measurement element 154 .

[0196] In some of the embodiments, the vacuum device 200 is a vacuum generator, including but not limited to a vacuum pump.

[0197] In some of the embodiments, the pressure measuring device 300 is a pressure sensor.

[0198] In some of the embodiments, the remote control device 400 is a controller with data processing and data transmission functions, including but not limited to a central processing unit, a computer, a server, etc.

[0199] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction coefficient measuring device for measuring the friction coefficient between a wiper blade and glass, characterized in that: include: A main body unit (110), wherein the main body unit (110) is arranged parallel to the glass; A plurality of adsorption units (120), wherein the plurality of adsorption units (120) are respectively arranged below the main body unit (110), and the top ends of the plurality of adsorption units (120) are located above the main body unit (110) and are connected to an external vacuum device, so as to fix the main body unit (110) to the glass under the action of the external vacuum device; A height adjustment unit (130), the height adjustment unit (130) being arranged at the top of the main body unit (110) and connected to the main body unit (110); a driving unit (140), wherein a main body end of the driving unit (140) is movably arranged above the main body unit (110), is located inside the height adjustment unit (130), and is rotatably connected to the height adjustment unit (130); a driving end of the driving unit (140) is located below the main body unit (110) and is used to reciprocate in a vertical direction under the action of the height adjustment unit (130); a thrust measuring unit (150), the thrust measuring unit (150) being movably disposed below the main body unit (110) and connected to the driving end of the driving unit (140), and being used for reciprocating in a vertical direction under the action of the driving unit (140) and rotating under the action of the driving unit (140); A mounting unit (160) is movably arranged at the bottom end of the thrust measuring unit (150), abuts against the thrust measuring unit (150), and is detachably connected to the wiper blade, and is used for reciprocating in a vertical direction under the action of the thrust measuring unit (150) and rotating under the action of the thrust measuring unit (150).

2. The friction coefficient measuring device according to claim 1, characterized in that: The main body unit (110) comprises: A main body element (111), the main body element (111) being arranged parallel to the glass, the height adjustment unit (130) being arranged above the main body element (111), and the adsorption unit (120), the thrust measurement unit (150), and the installation unit (160) being arranged below the main body element (111); A first through-slot element (112), wherein the first through-slot element (112) is arranged at the center of the main body element (111) and penetrates the main body element (111), and is used for allowing the driving end of the driving unit (140) to pass through the main body element (111).

3. The friction coefficient measuring device according to claim 2, characterized in that: The main body unit (110) further includes: A plurality of second through-slot elements (113) are arranged around the main body element (111) and are respectively arranged to penetrate the main body element (111) so as to allow the adsorption unit (120) to pass through the main body element (111).

4. The friction coefficient measuring device according to claim 1, characterized in that: The adsorption unit (120) comprises: An adsorption element (121), wherein the adsorption element (121) is arranged below the main body unit (110), and the top end of the adsorption element (121) is located above the main body unit (110) and is connected to an external vacuum device, and is used to fix the main body unit (110) to the glass under the action of the external vacuum device.

5. The friction coefficient measuring device according to claim 1, characterized in that: The height adjustment unit (130) comprises: A first support element (131), the first support element (131) being arranged at the top end of the main body unit (110) and connected to the main body unit (110); A first rotating element (132), wherein the first rotating element (132) is disposed through the first bracket element (131); A control element (133), wherein the control element (133) is rotationally connected to the first rotating element (132) and the driving unit (140) respectively, and is used to drive the driving unit (140) to reciprocate in a vertical direction.

6. The friction coefficient measuring device according to claim 5, characterized in that: The height adjustment unit (130) further comprises: A first sliding element (134), wherein the first sliding element (134) is disposed through the first bracket element (131); A second sliding element (135), wherein the second sliding element (135) is respectively connected to the first sliding element (134) and the driving unit (140), and is used for reciprocating along a vertical direction under the action of the control element (133).

7. The friction coefficient measuring device according to claim 1, characterized in that: The driving unit (140) comprises: A driving element (141), wherein the main body end of the driving element (141) is movably arranged above the main body unit (110), is located inside the height adjustment unit (130), and is rotatably connected to the height adjustment unit (130); the driving end of the driving unit (140) is located below the main body unit (110) and is connected to the thrust measurement unit (150), and is used for reciprocating in a vertical direction under the action of the height adjustment unit (130) to drive the thrust measurement unit (150) to rotate.

8. The friction coefficient measuring device according to claim 1, characterized in that: The thrust measurement unit (150) comprises: a second support element (151), the second support element (151) being movably disposed below the main body unit (110) and connected to a driving end of the driving unit (140), and being used for reciprocating in a vertical direction under the action of the driving unit (140) and rotating under the action of the driving unit (140); A second rotating element (152), the second rotating element (152) being disposed at the bottom end of the second bracket element (151) and being rotatably connected to the mounting unit (160); A third support element (153), the third support element (153) being arranged at the bottom end of the second support element (151) and connected to the second support element (151); A plurality of thrust measuring elements (154) are respectively arranged at the bottom end of the third bracket element (153) and are in contact with the wiper blade.

9. The friction coefficient measuring device according to claim 1, characterized in that: The installation unit (160) comprises: a third rotating element (161), the third rotating element (161) being disposed at the bottom end of the thrust measuring unit (150) and being rotationally connected to the thrust measuring unit (150); A mounting element (162) is arranged at the bottom end of the third rotating element (161), abuts against the thrust measuring unit (150), and is detachably connected to the wiper blade, and is used for reciprocating in a vertical direction under the action of the thrust measuring unit (150) and rotating under the action of the thrust measuring unit (150).

10. A friction coefficient measurement system, characterized in that: include: The friction coefficient measuring device (100) according to any one of claims 1 to 9; A vacuum device (200), wherein the vacuum device (200) is connected to a plurality of the adsorption units (120) of the friction coefficient measuring device (100); A pressure measuring device (300), the pressure measuring device (300) being detachably connected to the wiper blade and used for measuring a pressure value; A remote control device (400) is respectively connected to the drive unit (140), the thrust measurement unit (150), the vacuum device (200), and the pressure measurement device (300) of the friction coefficient measurement device (100) and is used to calculate and obtain the friction coefficient.

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