Wiper device

Abstract

The application discloses a wiper device, comprising a supporting part, a rubber strip arranged on the supporting part and an adjusting mechanism, the supporting part has a length direction, the adjusting mechanism comprises a plurality of adjusting parts arranged at intervals along the length direction of the supporting part and made of elastic material, and the adjusting mechanism is used for adjusting the force acting on each point of the rubber strip along the length direction. Since the force acting on each point of the rubber strip is self-balanced and the force-acting points are increased, the rubber strip can be more closely attached to the glass compared with the prior art, thereby optimizing the attachment of the rubber strip and the glass of the wiper device, optimizing the friction force of each point of the rubber strip, making the friction force of each point of the rubber strip close to the same, and thereby striving to ensure that the rubber strip is attached to the glass all the time, so as to improve the rain wiping and cleaning capacity of the wiper device.

Description

Technical Field

[0001] This invention relates to a surface cleaning device, specifically to a windshield wiper. Background Technology

[0002] Traditional wiping devices can generally be divided into two main categories: framed wiping devices and frameless wiping devices. Framed wiping devices can be further divided into segmented framed wiping devices and traditional framed wiping devices. Frameless wiping devices can be divided into integrated double-blade frameless wiping devices, integrated single-blade frameless wiping devices, segmented frameless wiping devices, and composite frameless wiping devices.

[0003] Framed wipers transmit pressure to the wiper blade through a rigid steel frame fulcrum. Because the pressure at the contact point between the fulcrum and the blade is much greater than on other parts of the blade, this contact area is prone to aging and deformation, ultimately resulting in streaks of water residue during operation. While the force is equal at each point, the relatively small number of pressure points leads to uneven force distribution on the blade, inevitably resulting in poor adhesion between the blade and the glass. This makes it easy for the wiper blade to miss areas and not wipe cleanly enough. A common mechanical solution to this problem with framed wipers is to increase the pressure of the wiper arm, forcibly pressing the blade against the glass to reduce missed areas. While this results in a tighter fit and cleaner wiping, the downside is increased wiping noise due to the greater force and tighter fit.

[0004] Frameless wiping systems use a built-in memory elastic steel sheet structure to transmit pressure to the wiping strip, distributing pressure points and ensuring even force distribution. While the force distribution is relatively uniform across multiple pressure points, the magnitude of the force varies, with the greatest force at the center of the steel sheet and gradually decreasing towards the ends. This inevitably leads to uneven friction at each point of contact between the wiping strip and the glass, causing the wiping strip to malfunction and produce noise. A conventional mechanical solution to this problem is to reduce the elasticity of the steel sheet, mitigating the tendency for the force to be greatest in the center and decrease towards the ends. This reduces the pressure in the middle, but while it reduces noise, it can result in missed areas at the ends, incomplete wiping, or limitations in the wiping system's length.

[0005] Therefore, regardless of whether it is a framed or frameless wiper, their inherent structural defects inevitably lead to shortcomings in their wiping performance. Summary of the Invention

[0006] To overcome the deficiencies in the prior art, embodiments of the present invention provide a wiping device for solving at least one of the above-mentioned problems.

[0007] This application discloses a wiper device, comprising: a support portion, a rubber strip disposed on the support portion, and an adjustment mechanism. The support portion has a length direction, and the adjustment mechanism includes a plurality of adjustment parts arranged at intervals along the length direction of the support portion and made of elastic material. The adjustment mechanism is used to adjust the force exerted on the rubber strip at various points along its length direction.

[0008] Preferably, the adjustment mechanism is used to ensure that the force exerted on the adhesive strip at each point along its length is substantially the same.

[0009] Preferably, the adjusting part is disposed between the supporting part and the rubber strip, and the adjusting part is capable of deformation along the length direction of the supporting part.

[0010] Preferably, the adjusting part includes a claw made of elastic material, and the side of the claw opposite to the supporting part is provided with a hook for the rubber strip to pass through.

[0011] Preferably, the adhesive strip has receiving grooves on both sides, and the hook is embedded in the receiving groove and cooperates with the receiving groove, so that the receiving groove of the adhesive strip does not restrict the deformation of the hook along the length direction of the main steel sheet.

[0012] Preferably, the adjusting part includes a sliding part that can move relative to the supporting part along the length direction of the supporting part, the sliding part being disposed on the side of the supporting part away from the rubber strip, and the sliding part being made of an elastic material.

[0013] Preferably, the support is made of a rigid material, and all the adjustment parts have the same elasticity.

[0014] Preferably, the support portion includes a main steel sheet made of elastic steel sheet, and the elasticity of each adjustment portion decreases from the center of the main steel sheet towards both ends of the support portion along its length.

[0015] Preferably, the support portion includes a main steel sheet made of elastic steel sheet, each of the adjustment portions is made of the same material, and the thickness of each adjustment portion decreases from the center of the main steel sheet towards both ends of the length direction of the support portion; or, the support portion includes a main steel sheet made of elastic steel sheet, each of the adjustment portions is made of the same material, and the length of each adjustment portion increases from the center of the main steel sheet towards both ends of the length direction of the support portion.

[0016] Preferably, a pre-bent memory elastic steel sheet is embedded inside the rubber strip.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. With the above structure, the force on the rubber strip can be automatically adjusted according to the adjustment mechanism. It also optimizes the friction of each point of the rubber strip, making the friction of each point of the rubber strip nearly the same. This makes the rubber strip evenly stressed along the length of the support, allowing the rubber strip to swing synchronously, making wiping smoother and reducing wiping noise, making wiping quieter.

[0019] 2. The flexible structure of the wiper device is adjusted by the adjustment mechanism to ensure that the rubber strip remains in contact with the glass at all times, thereby improving the wiping and cleaning ability of the wiper device.

[0020] 3. It can increase the size of the frameless wiping device, making the size of the frameless wiping device suitable for other application fields such as passenger cars and commercial vehicles;

[0021] 4. It can make the framed wiping device meet higher requirements, enabling it to better meet the high-performance requirements of transportation vehicles such as engineering vehicles, high-speed trains, and aircraft, thus broadening the application range of the framed wiping device.

[0022] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the wiper device in one embodiment of this application (single steel sheet without boneless claw).

[0025] Figure 2 yes Figure 1 A partial schematic diagram of the central wiper device.

[0026] Figure 3 yes Figure 2 Side view.

[0027] Figure 4 This is a structural schematic diagram of another embodiment of this application (single steel sheet without frame sliding).

[0028] Figure 5 yes Figure 4 A partial schematic diagram of the wiper device.

[0029] Figure 6 yes Figure 5 Side view of the wiper device.

[0030] Figure 7 This is a structural schematic diagram of another embodiment of this application (double steel sheet boneless sliding).

[0031] Figure 8 yes Figure 7 Side view of the wiper device.

[0032] Figure 9 This is a schematic diagram of another embodiment of this application (with bone-like claws).

[0033] Figure 10 yes Figure 9 A partial schematic diagram of the wiper device.

[0034] The reference numerals in the above figures are as follows: 100, rubber strip; 10, end; 11, bracket; 12, guide strip; 13, main steel plate; 14, claw; 15, limiting part; 16, sliding part; 17, positioning part; 18, hook; 19, receiving groove; 20, slide groove; 21, body; 22, support column; 23, main frame; 24, secondary frame; 25, supporting steel plate. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This application discloses a wiping device, including a support extending along the length direction, a rubber strip 100 disposed on the support, and an adjustment mechanism, which can adjust the force exerted on the rubber strip 100 along the length direction of the support.

[0037] With the above structure, the force on the rubber strip 100 can be automatically adjusted according to the adjustment mechanism, so that the rubber strip 100 is subjected to uniform force in the length direction of the support, allowing the rubber strip 100 to swing synchronously, making wiping smoother, while reducing wiping noise and making wiping quieter.

[0038] Reference Figures 1 to 3As shown in the illustration, this application discloses a windshield wiper device, which includes a support, a rubber strip 100, and an adjustment mechanism. The windshield wiper device in this embodiment is a frameless wiper device. In this embodiment, the support includes a main steel sheet 13 made of elastic steel sheet material. The main steel sheet 13 has mutually perpendicular length, width, and thickness directions. The main steel sheet 13 has opposing first and second sides in its thickness direction. The first side of the main steel sheet 13 is used to connect to the vehicle via an end cap 10. When the main steel sheet 13 is not compressed, it is arched, meaning the cross-sectional shape of the plane formed by its length and thickness directions is arc-shaped. When the main steel sheet 13 is installed on the vehicle, after being compressed by the end cap 10 or other components on its first side, it deforms to a certain extent, causing the rubber strip 100 to press against the vehicle glass. At this time, the cross-sectional shape of the plane formed by its length and width directions is elongated. Furthermore, the main steel sheet 13 can rotate relative to the automotive glass under the drive of the end head 10. A bracket 11 for connecting to the end head 10 is also provided on the first side of the main steel sheet 13, and two guide strips 12 are provided on both sides of the bracket 11, wherein the main steel sheet 13 passes through the two guide strips 12. Two limiting portions 15 are also provided at both ends of the main steel sheet 13 in its length direction, and these two limiting portions 15 respectively connect the guide strips 12, the main steel sheet 13, and the adhesive strip 100.

[0039] Reference Figure 2 As shown, in this embodiment, the adjusting mechanism includes a plurality of claws 14, which are spaced apart along the length of the main steel plate 13. Each claw 14 is disposed on a second side of the main steel plate 13. In this embodiment, the main steel plate 13 is provided with a plurality of positioning holes spaced apart along its length. Each claw 14 is fixed to the main steel plate 13 through the positioning holes by fasteners such as bolts or screws. Each claw 14 has a hook portion formed on its side opposite to the main steel plate 13. The rubber strip 100 passes through the hook portion of each claw 14 and is thus limited by each claw 14.

[0040] In this embodiment, each claw 14 is made of an elastic material. Preferably, each claw 14 can also be made of an elastic steel sheet. Of course, in other optional embodiments, each claw 14 can also be made of other elastic materials with certain strength and elasticity as needed. When the main steel sheet 13 is not compressed, each claw 14 is arched, that is, the cross-sectional shape of the plane formed by each claw 14 in its length and thickness directions is a certain arc. When the main steel sheet 13 is installed on the automobile, the claw 14 is subjected to a certain compression deformation and becomes linear along the length direction of the main steel sheet 13.

[0041] In the prior art, the claw 14 is only used to limit the rubber strip 100 and has no elasticity. The force transmission sequence of the frameless wiper device in the prior art is: end 10 on the car → bracket 11 → main steel strip 13 → rubber strip 100. At this time, the pressure F(rubber strip 100) on each point of the rubber strip 100 is equal to the pressure F(pressure) on each point of the main steel strip 13 along its length. That is, F(rubber strip 100) = F(pressure). Due to the inherent mechanical characteristics of the frameless wiper device in the prior art, namely: the center of the main steel strip 13 has the greatest force, and the force on the main steel strip 13 gradually decreases from its center to both ends along its length. Therefore, the force on the rubber strip 100 of the frameless wiper device in the prior art is different at each point along its length.

[0042] Conversely, in this embodiment, since the claw 14 has a certain elasticity, when the claw 14 is subjected to force, the claw 14 will deform to a certain extent along the length direction of the main steel plate 13. At this time, the force transmission sequence of the wiping device is: end 10 set on the car → bracket 11 → main steel plate. 100. The claw 14 adjusts the force acting on the rubber strip 100 along the length of the main steel plate 13 as it deforms, making the force acting on the rubber strip 100 along its length more uniform. The elastic adjustment device deforms to adjust the pressure changes caused by the change in distance between the surface to be cleaned and the swing arm, to prevent excessive pressure from causing excessive compression and deformation of the rubber strip.

[0043] In the prior art, when the interface of the automotive glass changes, such as when there are impurities or foreign objects on the glass, the friction between the rubber strip 100 and the glass at that location will suddenly increase, which will cause adverse effects such as deformation or damage to the rubber strip 100.

[0044] Conversely, in this embodiment, when the interface of the automotive glass changes, such as when there are impurities or foreign objects on the glass, the claw 14 of the wiper device can automatically deform according to the impurities or foreign objects, realizing the flexible structural adjustment of the wiper device, so that the friction between the rubber strip 100 and the glass is almost uniform. Thus, the dynamic changes of the contact interface between the wiper device and the glass correspond to the changes in the glass interface.

[0045] Reference Figure 3 As shown, in a preferred embodiment, the adhesive strip 100 is provided with a receiving groove 19 extending along its length direction. The hook 18 is inserted into the receiving groove 19 of the adhesive strip 100, and when the claw 14 deforms, the hook 18 can slide within the receiving groove 19 of the adhesive strip 100. In other words, the claw 14 can limit the adhesive strip 100 through the hook 18 and the receiving groove 19; however, the receiving groove 19 of the adhesive strip 100 does not restrict the deformation of the claw 14 along the length direction of the main steel sheet 13.

[0046] Specifically, the chuck 14 is restricted in the thickness direction of the main steel sheet 13 by the main steel sheet 13, the fasteners, and the adhesive strip 100. That is, although the chuck 14 is elastic, it cannot, or is essentially unable to, deform along the thickness direction of the main steel sheet 13. Furthermore, the chuck 14 is restricted in the width direction of the main steel sheet 13 by the adhesive strip 100. That is, although the chuck 14 is elastic, it cannot, or is essentially unable to, deform along the width direction of the main steel sheet 13. Therefore, when subjected to force, the chuck 14 can only deform along the length direction of the main steel sheet 13, and this deformation is precisely what we need to use to adjust the deformation of the adhesive strip 100 at various points along its length.

[0047] In a preferred embodiment, in order to adapt to the gradual decrease in force on the main steel sheet 13 from its center to both ends of its length direction, the elasticity of each claw 14 also decreases from the center of the main steel sheet 13 to both ends of its length direction. This ensures that the pressure on each force point on the rubber strip 100 is approximately the same, and that the friction on each force point on the rubber strip 100 is also approximately the same. This allows the rubber strip 100 to swing synchronously, making wiping smoother and reducing wiping noise, resulting in quieter wiping.

[0048] In this embodiment, each claw 14 can be made of the same elastic steel sheet. However, the thickness of each claw 14 decreases from the center of the main steel sheet 13 towards both ends of the main steel sheet 13 along its length.

[0049] In one alternative embodiment, each of the jaws 14 is made of the same material, and the length of each of the jaws 14 increases from the center of the main steel sheet 13 toward both ends of the main steel sheet 13 in the length direction.

[0050] For example, in one optional embodiment, there can be four jaws 14, arranged from left to right as a first jaw, a second jaw, a third jaw, and a fourth jaw. The first and second jaws are located on the left side of the bracket 11, with the second jaw positioned between the first jaw and the connecting seat. Therefore, the second jaw has a greater elasticity than the first jaw. The thickness of the second jaw is less than the thickness of the third jaw. Alternatively, the third and fourth jaws are located on the right side of the bracket 11, with the third jaw positioned between the fourth jaw and the connecting seat. Therefore, the third jaw has a greater elasticity than the fourth jaw. The thickness of the third jaw is less than the thickness of the fourth jaw. Considering force balance, the second jaw can be symmetrically arranged with respect to the third jaw; the first and fourth jaws can also be symmetrically arranged.

[0051] In a preferred embodiment, the embedded retaining strip embedded inside the rubber strip 100 can be a pre-bent memory elastic steel sheet. Because the retaining strip of the pre-bent memory elastic steel sheet will redistribute the force evenly to the force points of the claw 14, it will increase the number of force points and better allow the wiper device rubber strip 100 to adhere to the glass.

[0052] In summary, this embodiment has the following advantages:

[0053] 1. Because the force at each point of the rubber strip 100 is self-balanced, the two sides of the rubber strip 100 can adhere more tightly to the glass than before. This optimizes the adhesion between the rubber strip 100 of the wiper device and the glass, thereby ensuring that the rubber strip 100 remains in contact with the glass from beginning to end, so as to improve the wiping and cleaning ability of the wiper device.

[0054] 2. Further optimize and adjust the pressure between the wiper blade 100 and the glass interface and the distribution of pressure contact points, so that the pressure points between the frameless wiper blade 100 and the glass are almost the same, and the friction between the blade 100 and the glass is almost balanced, making wiping smoother and quieter.

[0055] 3. After adopting this embodiment, since the pressure difference at each point of the rubber strip 100 is reduced, the adjustment range of the main pressure can be expanded, thereby increasing the size of the frameless wiping device and making the size of the frameless wiping device suitable for other application fields such as passenger cars and commercial vehicles.

[0056] refer to Figures 4 to 6As shown in the illustration, this application discloses a wiping device, which includes a support, a rubber strip 100, and an adjustment mechanism. The wiping device in this embodiment is a frameless wiping device. In this embodiment, the support includes a main steel sheet 13 made of elastic steel sheet material. The main steel sheet 13 has mutually perpendicular length, width, and thickness directions. The main steel sheet 13 has opposing first and second sides in its thickness direction. The first side of the main steel sheet 13 is used for connection to a vehicle via an end cap 10. The rubber strip 100 is disposed on the second side of the main steel sheet 13. When the main steel sheet 13 is not compressed, the main steel sheet 13 and the rubber strip 100 are arched, meaning the cross-sectional shape of the plane formed by the main steel sheet 13 and the rubber strip 100 in their length and thickness directions is arc-shaped. When the main steel sheet 13 is installed on a vehicle, the main steel sheet 13 and the rubber strip 100 are subjected to the squeezing force exerted on their first side by the end head 10 or other components, causing them to deform and press the rubber strip 100 against the vehicle glass. At this time, the cross-sectional shape of the plane formed by the main steel sheet 13 and the rubber strip 100 in their length and width directions is elongated. Furthermore, the main steel sheet 13 and the rubber strip 100 can rotate relative to the vehicle glass under the drive of the end head 10. A bracket 11 for connecting with the end head 10 is also provided on the first side of the main steel sheet 13, and two guide strips 12 are provided on both sides of the bracket 11, wherein the main steel sheet 13 passes through the two guide strips 12. Two limiting parts 15 are also provided at both ends of the main steel sheet 13 in its length direction, and these two limiting parts 15 connect the guide strips 12, the main steel sheet 13 and the rubber strip 100 respectively.

[0057] Reference Figure 5 and Figure 6 As shown, in this embodiment, the adjustment mechanism includes multiple adjustment units arranged at intervals along the length of the main steel sheet 13. Each adjustment unit includes two positioning parts 17 and a sliding part 16. Each positioning part 17 is mounted on the second side of the main steel sheet 13 by fasteners such as bolts, screws, or studs. The sliding part 16 is made of an elastic material. Preferably, the sliding part 16 can also be made of an elastic steel sheet. The sliding part 16 has a groove 20 extending along the length of the main steel sheet 13. The sliding part 16 is movably mounted on its corresponding two positioning parts 17 through the groove 20. When the main steel sheet 13 is not compressed, each sliding part 16 is arched, that is, the cross-sectional shape of the plane formed by the length and thickness directions of each sliding part 16 is a certain arc. When the main steel sheet 13 is installed on a vehicle, the sliding part 16 is subjected to a certain compression deformation and becomes linear along the length of the main steel sheet 13.

[0058] Of course, in other alternative embodiments, the sliding portion 16 can be slidable through other alternative implementations. For example, in one alternative embodiment, there is one positioning portion 17, which passes through the groove 20 of the sliding portion 16. However, the balance of the sliding portion 16 in this structure is slightly less than that in the previous embodiment. In another alternative embodiment, a groove 20 extending along the length of the main steel sheet 13 is formed on it. A portion of the sliding portion 16 is embedded in the groove 20, thereby allowing it to slide relative to the main steel sheet 13.

[0059] Since the sliding part 16 can move relative to the main steel plate 13, when the sliding part 16 is subjected to a force, it can move along the length direction of the main steel plate 13. At this time, the force transmission sequence of the wiper device is: end cap 10 on the vehicle → bracket 11 → main steel plate. 100. The sliding part 16 automatically moves relative to the main steel sheet 13 according to the condition of the glass interface, thereby adjusting the force exerted on the adhesive strip 100 along the length direction of the main steel sheet 13, so that the force exerted on the adhesive strip 100 along its length direction tends to be uniform. The sliding part 16 deforms and slides to adjust the pressure changes caused by the change in distance between the surface to be cleaned and the swing arm, so as to prevent excessive pressure from causing excessive compression and deformation of the adhesive strip.

[0060] In this embodiment, when the interface of the automotive glass changes, such as when there are impurities or foreign objects on the glass, the sliding part 16 of the wiper device can be displaced according to the actual situation, realizing the flexible structural adjustment of the wiper device, so that the friction between the rubber strip 100 and the glass is almost balanced. Thus, the dynamic changes of the contact interface between the wiper device and the glass correspond to the changes in the glass interface.

[0061] In a preferred embodiment, in order to adapt to the gradual decrease of the force on the main steel sheet 13 from its center to both ends of its length direction, the elasticity of each sliding part 16 also decreases from the center of the main steel sheet 13 to both ends of its length direction. This ensures that the pressure on each force point on the rubber strip 100 is approximately the same, and that the friction on each force point on the rubber strip 100 is also approximately the same. This allows the rubber strip 100 to swing synchronously, making wiping smoother and reducing wiping noise, resulting in quieter wiping.

[0062] In this embodiment, each sliding part 16 can be made of elastic steel sheet. However, the thickness of each sliding part 16 decreases from the center of the main steel sheet 13 towards both ends of the main steel sheet 13 in the length direction.

[0063] In another alternative embodiment, each sliding part 16 may be made of an elastic steel sheet. However, the length of each sliding part 16 increases from the center of the main steel sheet 13 towards both ends of the main steel sheet 13 along its length.

[0064] For example, in one optional embodiment, there can be four sliding parts 16, namely, a first sliding part, a second sliding part, a third sliding part, and a fourth sliding part, from left to right. The first and second sliding parts are located on the left side of the bracket 11, with the second sliding part positioned between the first sliding part and the connecting seat. Therefore, the elasticity of the second sliding part is greater than that of the first sliding part. The thickness of the second sliding part is greater than that of the first sliding part. The third and fourth sliding parts are located on the right side of the bracket 11, with the third sliding part positioned between the fourth sliding part and the connecting seat. Therefore, the elasticity of the third sliding part is greater than that of the fourth sliding part. The thickness of the third sliding part is greater than that of the fourth sliding part. Considering force balance, the second sliding part can be symmetrically arranged with respect to the third sliding part; the first and fourth sliding parts can also be symmetrically arranged.

[0065] In summary, this embodiment has the following advantages:

[0066] 1. Because the force at each point of the rubber strip 100 is self-balanced, the two sides of the rubber strip 100 can adhere more tightly to the glass than before. This optimizes the adhesion between the rubber strip 100 of the wiper device and the glass, thereby ensuring that the rubber strip 100 remains in contact with the glass from beginning to end, so as to improve the wiping and cleaning ability of the wiper device.

[0067] 2. Further optimize and adjust the pressure between the wiper blade 100 and the glass interface and the distribution of pressure contact points, so that the pressure points between the frameless wiper blade 100 and the glass are almost the same, and the friction between the blade 100 and the glass is almost balanced, making wiping smoother and quieter.

[0068] 3. After adopting this embodiment, since the pressure difference at each point of the rubber strip 100 is reduced, the adjustment range of the main pressure can be expanded, thereby increasing the size of the frameless wiping device and making the size of the frameless wiping device suitable for other application fields such as passenger cars and commercial vehicles.

[0069] Reference Figure 7 and Figure 8 As shown in the illustration, this application discloses a wiping device, which includes a support portion, a rubber strip 100, and an adjustment mechanism. The wiping device in this embodiment is a frameless wiping device. Unlike the previous embodiment, in this embodiment, the support portion includes two support steel plates 25 extending along the length direction and made of elastic steel sheets. The rubber strip 100 has two positioning grooves extending along the length direction on each of its two sides along its width direction. The two support steel plates 25 are respectively embedded in the two positioning grooves of the rubber strip 100.

[0070] In this embodiment, the adjustment mechanism includes multiple adjustment units, which are spaced apart along the length of the main steel sheet 13. Each adjustment unit includes two positioning parts 17 and a sliding part 16. Each positioning part 17 is fixed to two supporting steel sheets 25 on both sides along the width direction by fasteners such as screws, bolts, or bolts. Specifically, each positioning part 17 includes a body 21. The body 21 extends along the width direction of the rubber strip 100. Two support pillars 22 are respectively provided on both sides of the body 21 along the width direction. Each support pillar 22 extends towards the thickness direction of the rubber strip 100 and is connected to the supporting steel sheet 25. The sliding part 16 is made of an elastic material. Preferably, the sliding part 16 can also be made of an elastic steel sheet. The sliding part 16 has a groove 20 extending along the length direction of the main steel sheet 13. The sliding part 16 is movably inserted through the groove 20 onto the body 21 of the two corresponding positioning parts 17. When the main steel sheet 13 is not compressed, each sliding part 16 is arched, that is, the cross-sectional shape of the plane formed by each sliding part 16 in its length and thickness directions is a certain arc. When the main steel sheet 13 is installed on a car, the sliding part 16 is subjected to a certain compression deformation and becomes linear along the length direction of the main steel sheet 13.

[0071] Since the sliding part 16 can move relative to the main steel plate 13, when the sliding part 16 is subjected to a force, it can move along the length direction of the main steel plate 13. At this time, the force transmission sequence of the wiper device is: end cap 10 on the vehicle → bracket 11 → main steel plate. 100. The sliding part 16 slides and deforms to adjust the pressure changes caused by the change in distance between the surface to be cleaned and the swing arm, so as to prevent excessive pressure from causing excessive compression and deformation of the rubber strip.

[0072] In this embodiment, when the interface of the automotive glass changes, such as when there are impurities or foreign objects on the glass, the sliding part 16 of the wiper device can be displaced according to the actual situation, realizing the flexible structural adjustment of the wiper device, so that the friction between the rubber strip 100 and the glass is almost balanced. Thus, the dynamic changes of the contact interface between the wiper device and the glass correspond to the changes in the glass interface.

[0073] Of course, in other alternative embodiments, the sliding portion 16 can be slidable through other alternative implementations. For example, in one alternative embodiment, there is one positioning portion 17, which passes through the groove 20 of the sliding portion 16. However, the balance of the sliding portion 16 in this structure is slightly less than that in the previous embodiment. In another alternative embodiment, a groove 20 extending along the length of the main steel sheet 13 is formed on it. A portion of the sliding portion 16 is embedded in the groove 20, thereby allowing it to slide relative to the main steel sheet 13.

[0074] In a preferred embodiment, in order to adapt to the gradual decrease of the force on the main steel sheet 13 from its center to both ends of its length direction, the elasticity of each sliding part 16 also decreases from the center of the main steel sheet 13 to both ends of its length direction. This ensures that the pressure on each force point on the rubber strip 100 is approximately the same, and that the friction on each force point on the rubber strip 100 is also approximately the same. This allows the rubber strip 100 to swing synchronously, making wiping smoother and reducing wiping noise, resulting in quieter wiping.

[0075] In this embodiment, each sliding part 16 can be made of elastic steel sheet. However, the thickness of each sliding part 16 decreases from the center of the main steel sheet 13 towards both ends of the main steel sheet 13 in the length direction.

[0076] In another alternative embodiment, each sliding part 16 may be made of an elastic steel sheet. However, the length of each sliding part 16 increases from the center of the main steel sheet 13 towards both ends of the main steel sheet 13 along its length.

[0077] For example, in one optional embodiment, there can be four sliding parts 16, namely, a first sliding part, a second sliding part, a third sliding part, and a fourth sliding part, from left to right. The first and second sliding parts are located on the left side of the bracket 11, with the second sliding part positioned between the first sliding part and the connecting seat. Therefore, the elasticity of the second sliding part is greater than that of the first sliding part. The thickness of the second sliding part is greater than that of the first sliding part. The third and fourth sliding parts are located on the right side of the bracket 11, with the third sliding part positioned between the fourth sliding part and the connecting seat. Therefore, the elasticity of the third sliding part is greater than that of the fourth sliding part. The thickness of the third sliding part is greater than that of the fourth sliding part. Considering force balance, the second sliding part can be symmetrically arranged with respect to the third sliding part; the first and fourth sliding parts can also be symmetrically arranged.

[0078] In summary, this embodiment has the following advantages:

[0079] 1. Because the force at each point of the rubber strip 100 is self-balanced, the two sides of the rubber strip 100 can adhere more tightly to the glass than before. This optimizes the adhesion between the rubber strip 100 of the frameless wiper device and the glass, thereby ensuring that the rubber strip 100 remains in contact with the glass from beginning to end, so as to improve the wiping and cleaning ability of the wiper device.

[0080] 2. Further optimize and adjust the pressure between the wiper blade 100 and the glass interface and the distribution of pressure contact points, so that the pressure points between the frameless wiper blade 100 and the glass are almost the same, and the friction between the blade 100 and the glass is almost balanced, making wiping smoother and quieter.

[0081] 3. After adopting this embodiment, since the pressure difference at each point of the rubber strip 100 is reduced, the adjustment range of the main pressure can be expanded, thereby increasing the size of the frameless wiping device and making the size of the frameless wiping device suitable for other application fields such as passenger cars and commercial vehicles.

[0082] Reference Figure 9 and Figure 10 As shown in the figure, this application discloses a wiping device, which includes a support, a rubber strip 100, and an adjustment mechanism. The wiping device in this embodiment is a framed wiping device. The support includes a main frame 23 connected to the vehicle via a main arm and multiple secondary frames 24 disposed on the main frame 23, with the secondary frames 24 spaced apart along the length of the main frame 23. Both the main frame 23 and the secondary frames 24 are made of rigid material. An embedded support strip to prevent bending deformation may be embedded inside the rubber strip 100.

[0083] The adjustment mechanism includes multiple claws 14 disposed on each of the sub-frames 24 and located on the side opposite to the main frame 23. The multiple claws 14 are arranged at intervals along the length of the main frame 23. Each claw 14 has a hook formed on its side opposite to the main steel sheet 13. The rubber strip 100 passes through the hook of each claw 14 and is thus limited by each claw 14.

[0084] In this embodiment, each claw 14 is made of an elastic material. Preferably, each claw 14 can also be made of an elastic steel sheet. Of course, in other optional embodiments, each claw 14 can also be made of other elastic materials with certain strength and elasticity as needed. When the wiper device is not compressed, each claw 14 is arched, that is, the cross-sectional shape of the plane formed by each claw 14 in its length and thickness directions is a certain arc. When the wiper device is installed on a car, the claw 14 is subjected to a certain compression deformation and becomes linear along the length direction of the main frame 23.

[0085] In the existing technology, the claw 14 is only used to limit the rubber strip 100 and has no elasticity. The framed wiper applies pressure evenly to several force points in stages through several fixed points. The force transmission sequence is: main arm → main frame 23 → secondary frame 24 → claw 14 → embedded support strip → rubber strip 100. At this time, the pressure F(rubber strip 100) on each point of the rubber strip 100 is equal to the pressure F(pressure) on each point corresponding to the main steel plate 13 along its length. That is, F(rubber strip 100) = F(pressure). Although the force at each force point is equal for the framed wiper, the relatively small number of force points results in uneven force distribution on the rubber strip 100. This inevitably leads to poor adhesion between the rubber strip 100 and the glass, making it prone to missed areas and incomplete wiping.

[0086] Because the claw 14 has a certain degree of elasticity, when the claw 14 is subjected to force, it will deform to a certain extent along the length of the main steel plate 13. At this time, the force transmission sequence of the wiping device is: main arm → main frame 23 → secondary frame 24 → claw. 100. The claw 14 deforms to adjust the pressure changes caused by the varying distance between the surface to be cleaned and the swing arm, preventing excessive pressure from causing excessive compression and deformation of the rubber strip. This ensures that the frictional force at each pressure point on the rubber strip 100 is approximately the same. Furthermore, the elastic structure of the claw 14 increases the number of contact points between the rubber strip 100 and the glass. This allows the rubber strip 100 of the framed wiper to swing synchronously, making it more closely fitted to the glass, resulting in smoother wiping and reduced wiping noise, making wiping quieter. The increased contact points between the rubber strip 100 and the glass, due to the elastic structure of the claw 14, result in a closer fit and cleaner wiping.

[0087] In a preferred embodiment, the embedded retaining strip can be made of pre-bent memory elastic steel sheet. Because the retaining strip of the pre-bent memory elastic steel sheet will redistribute the force evenly to the force points of the claw 14, it will increase the number of force points and better allow the wiper blade 100 to adhere to the glass.

[0088] Specifically, the chuck 14 is restricted in the thickness direction of the sub-frame 24 by the sub-frame 24, the fastener, and the adhesive strip 100. That is, although the chuck 14 is elastic, it cannot, or is essentially unable to, deform along the thickness direction of the sub-frame 24. Furthermore, the chuck 14 is restricted in the width direction of the sub-frame 24 by the adhesive strip 100. That is, although the chuck 14 is elastic, it cannot, or is essentially unable to, deform along the width direction of the sub-frame 24. Therefore, when subjected to force, the chuck 14 can only deform along the length direction of the sub-frame 24, and this deformation is precisely what we need to use to adjust the deformation of the adhesive strip 100 at various points along its length.

[0089] In the prior art, when the interface of the automotive glass changes, such as when there are impurities or foreign objects on the glass, the friction between the rubber strip 100 and the glass at that location will suddenly increase, which will cause adverse effects such as deformation or damage to the rubber strip 100.

[0090] Conversely, in this embodiment, when the interface of the automotive glass changes, such as when there are impurities or foreign objects on the glass, the claw 14 of the wiper device can automatically deform according to the impurities or foreign objects, realizing the flexible structural adjustment of the wiper device, so that the friction between the rubber strip 100 and the glass is almost uniform. Thus, the dynamic changes of the contact interface between the wiper device and the glass correspond to the changes in the glass interface.

[0091] In a preferred embodiment, the adhesive strip 100 is provided with a receiving groove 19 extending along its length direction. The hook 18 is inserted into the receiving groove 19 of the adhesive strip 100, and when the claw 14 deforms, the hook 18 can slide within the receiving groove 19 of the adhesive strip 100. In other words, the claw 14 can limit the adhesive strip 100 through the hook 18 and the receiving groove 19; however, the receiving groove 19 of the adhesive strip 100 does not restrict the deformation of the claw 14 along the length direction of the main steel sheet 13.

[0092] In a preferred embodiment, in order to adapt to the fact that the force at each force point of the wiping device is equal, the elasticity of each claw 14 is also the same, thereby ensuring that the pressure on each force point on the rubber strip 100 is approximately the same, and the friction on each force point on the rubber strip 100 is also approximately the same, so that the rubber strip 100 swings synchronously, making wiping smoother, while reducing wiping noise and making wiping quieter.

[0093] For example, in one alternative implementation, the material and shape (thickness and length, etc.) of each claw 14 are the same.

[0094] In summary, this embodiment has the following advantages:

[0095] 1. Because the force on each point of the rubber strip 100 is self-balanced and the force points are increased, the two sides of the rubber strip 100 can adhere more tightly to the glass than before. This optimizes the adhesion between the rubber strip 100 of the wiper device and the glass, thereby ensuring that the rubber strip 100 remains in contact with the glass from beginning to end, so as to improve the wiping and cleaning ability of the wiper device.

[0096] 2. Further optimize and adjust the pressure between the wiper blade 100 and the glass interface and the distribution of pressure contact points, so that the pressure points between the frameless wiper blade 100 and the glass are almost the same, and the friction between the blade 100 and the glass is almost balanced, making wiping smoother and quieter.

[0097] 3. After adopting this implementation method, since the pressure difference at each point of the rubber strip 100 is reduced, the adjustment range of the main pressure can be expanded, thereby enabling the framed wiping device to meet higher requirements. This allows the framed wiping device to better meet the high-performance requirements of transportation vehicles such as engineering vehicles, high-speed trains, and aircraft, thus broadening the application range of the framed wiping device.

[0098] Of course, in other alternative implementations, the wiping device can be selected from various types of framed or frameless wiping devices depending on the actual situation.

[0099] For example, the squeegee device with a bone structure in this embodiment can also be other corresponding structures. For example, the squeegee device includes a main frame 23 and a secondary frame 24 (non-segmented). The secondary frame 24 is provided with a plurality of elastic claws 14.

[0100] Alternatively, the wiping device includes a main frame 23 and a secondary frame 24, with multiple adjustment units arranged along its length on the secondary frame 24. Each adjustment unit includes a sliding portion 16 that is elastic and can slide relative to the secondary frame 24 along its length. Alternatively, the composite frameless wiping device in this embodiment includes a rod extending along its length and at least two elastic strips. Multiple elastic strips are disposed on one side of the rod. The elastic strips are spaced apart along the length of the rod. Each elastic strip may be made of elastic steel sheet.

[0101] Each elastic strip may have multiple elastic claws 14 on the side opposite to the rod. The specific structure and shape of the claws 14 can be referred to the above embodiments, and will not be repeated here.

[0102] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A wiper device, characterized in that The application relates to a supporting part, a rubber strip arranged on the supporting part and an adjusting mechanism, wherein the supporting part has a length direction, the adjusting mechanism comprises a plurality of adjusting units arranged along the length direction of the supporting part and made of elastic material, the adjusting mechanism is used for adjusting the force acting on each point of the rubber strip along the length direction of the rubber strip, and the force acting on each point of the rubber strip along the length direction of the rubber strip is basically the same; the supporting part comprises a main steel sheet made of elastic steel sheet, and the elasticity of each adjusting unit decreases from the center of the main steel sheet to both ends of the length direction of the supporting part. Each adjusting unit comprises two positioning parts and a sliding part, each positioning part is arranged on the side surface of the main steel sheet through a fastener, the sliding part is made of elastic steel sheet, the sliding part is provided with a sliding groove extending along the length direction of the main steel sheet, the sliding part is movably arranged on the two corresponding positioning parts through the sliding groove, each sliding part is in an arch shape when the main steel sheet is not extruded, that is, the cross section shape of the plane formed by the length and thickness directions of each sliding part is in a certain arc shape, when the main steel sheet is installed on a vehicle, the sliding part is extruded and deformed to be linear along the length direction of the main steel sheet, when the sliding part is subjected to force, the sliding part can move along the length direction of the main steel sheet, so that the force acting on the rubber strip along the length direction of the main steel sheet is adjusted, and the force acting on the rubber strip along the length direction of the rubber strip tends to be the same; the elasticity of each sliding part also decreases from the center of the main steel sheet to both ends of the length direction of the main steel sheet, so that the pressure of each force point on the rubber strip is close to the same. Each sliding part is made of the same material, and the thickness of each sliding part decreases from the center of the main steel sheet to both ends of the length direction of the supporting part; or 2. The wiper device according to claim 1, characterized in that The supporting part comprises a main steel sheet made of elastic steel sheet, each sliding part is made of the same material, and the length of each sliding part increases from the center of the main steel sheet to both ends of the length direction of the supporting part. The rubber strip is internally embedded with a pre-bent memory elastic steel sheet.

3. The wiper device of claim 1, wherein ​

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