Scraper rubber regeneration device, scraper rubber regeneration method, and method for manufacturing regenerated scraper rubber

Abstract

Provided is a scraper rubber regeneration device capable of regenerating scraper rubber having reduced scraping performance with higher accuracy. There is provided a scraper rubber regeneration device including a cutting portion for cutting an end of a lip portion of the scraper rubber in a longitudinal direction of the scraper rubber, the regeneration device cuts a part of the tip end of the lip by moving a cutting part in a relative manner from an end A, which is one end in the longitudinal direction of the blade rubber, toward an end B, which is the other end, and is provided with a lip clamping member.

Description

Technical Field

[0001] The present disclosure relates to a scraper rubber regeneration device, a scraper rubber regeneration method and a manufacturing method of the regenerated scraper rubber for a scraper blade in a wiper for cleaning a scraping object such as a windshield of a vehicle, such as an automobile, a rail vehicle, an aircraft, a ship, etc. (hereinafter, also referred to as a "vehicle" for short). Background Art

[0002] In a blade rubber in a wiper blade for a vehicle, a contact portion at the tip that contacts a windshield glass gradually wears due to long-term use, which causes irregular scraping, etc. Patent document 1 discloses a regeneration cutter for regenerating a blade rubber tip by cutting off the blade rubber tip whose scraping performance is reduced due to long-term use of the wiper blade.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2006-174980 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] However, according to the inventor's inspection, the scraping performance of the wiper blade regenerated by the cutter for regenerating the wiper blade according to Patent Document 1 is not satisfactory at all. In recent years, in automobiles, for example, a driving assistance system using an on-board camera has been put into practical use, and the development of an automatic driving system has also been promoted. Therefore, now, in order to prevent the on-board camera from erroneously recognizing stains adhering to the windshield, the wiper blade requires a relatively high scraping performance.

[0008] Therefore, at least one aspect of the present disclosure is to provide a scraper rubber regeneration device that can regenerate a scraper rubber whose scraping performance has been reduced with higher accuracy. In addition, at least one aspect of the present disclosure is to provide a scraper rubber regeneration method for regenerating the scraping performance of a scraper rubber whose scraping performance has been reduced. In addition, at least one aspect of the present disclosure is to provide a method for manufacturing a regenerated scraper rubber having the same degree of scraping performance as a new product.

[0009] Solutions for solving problems

[0010] At least one aspect of the present disclosure provides a scraper rubber regeneration device, wherein the scraper rubber is provided on a scraper blade of a scraper device for a windshield of a vehicle, wherein

[0011] The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber.

[0012] The scraper rubber includes a base, a lip, and a neck, wherein the base is an attachment portion for attaching the scraper rubber to the scraper support, and the neck connects the lip to the base in a swingable manner.

[0013] At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield.

[0014] The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber,

[0015] The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction.

[0016] The regeneration device includes a clamping member that clamps the lip portion,

[0017] The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber, and

[0018] The clamping member is arranged at a position capable of clamping at least a portion into which the blade portion of the lip enters, and a position of the clamping member relative to the blade rubber is fixed.

[0019] At least one aspect of the present disclosure provides a method for regenerating a blade rubber provided in a wiper blade for a windshield wiper device in a vehicle.

[0020] The method comprises:

[0021] The process of fixing the scraper rubber to the above regeneration device; and

[0022] The step of cutting off a portion of a distal end of the lip portion of the blade rubber by the regenerating device.

[0023] At least one aspect of the present disclosure provides a method for manufacturing a regenerated scraper blade rubber for regenerating a scraper blade rubber provided in a scraper blade for a windshield scraper device in a vehicle.

[0024] The method comprises:

[0025] The process of fixing the scraper rubber to the above regeneration device; and

[0026] The step of obtaining the regenerated blade rubber by cutting off a part of the distal end of the lip portion of the blade rubber by the regenerating device.

[0027] Effects of the Invention

[0028] According to at least one aspect of the present disclosure, a scraper rubber regeneration device can be provided, which can regenerate a scraper rubber whose scraping performance has been reduced with higher accuracy. In addition, according to at least one aspect of the present disclosure, a scraper rubber regeneration method can be provided, which can restore the scraping performance of a scraper rubber whose scraping performance has been reduced. According to at least one aspect of the present disclosure, a method for manufacturing a regenerated scraper rubber can be provided, and the regenerated scraper rubber exhibits a scraping performance similar to that of a brand new scraper rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] [ Figure 1 ] Figure 1 is a schematic diagram of a scraper blade and a scraper rubber.

[0030] [ Figure 2 ] Figure 2 is a diagram for explaining the deformation of the lips.

[0031] [ Figure 3 ] Figure 3 It is a schematic diagram of a scraper rubber regeneration device.

[0032] [ Figure 4 ] Figure 4 is a schematic diagram for explaining the cutting unit.

[0033] [ Figure 5 ] Figure 5 is a schematic diagram for explaining a cutting unit and a clamping member.

[0034] [ Figure 6 ] Figure 6 It is a diagram for explaining a clamping member.

[0035] [ Figure 7 ] Figure 7 This is a further enlarged view of the area around the tip of the blade and lip. DETAILED DESCRIPTION

[0036] In the present disclosure, unless otherwise specified, "from XX to YY" or "XX to YY" indicating a numerical range means a numerical range including the lower limit and the upper limit as endpoints. In the case of a numerical range described in stages, the upper limit and the lower limit of each numerical range can be combined as needed.

[0037] Hereinafter, embodiments for carrying out the present disclosure will be specifically illustrated with reference to the accompanying drawings. However, the size, material, shape, and relative configuration of the components described in this mode are appropriately changed according to the construction of the components to which the present disclosure is applied and various conditions. That is, the scope of the present disclosure is not intended to be limited to the following embodiments. In addition, in the following description, components having the same function are represented by the same reference numerals in the drawings, and their descriptions are omitted in some cases.

[0038] The scraper device can be used to scrape objects, such as transportation equipment including vehicles, aircraft, ships, etc. represented by automobiles, industrial machinery equipment including construction machinery, etc. These transportation equipment and industrial machinery equipment are also collectively referred to as vehicles below. The scraper device can be applied to the windshield of the vehicle. The windshield is not limited to the front window, but includes side windows and rear windows.

[0039] In addition, the scraper device including the scraper blade can also be used for scraping objects such as lens devices of web cameras, protective glass surfaces of camera devices, etc. Hereinafter, the scraper blade for a vehicle windshield will be described as an example, but the scraper blade is not limited thereto.

[0040] like Figure 1 As shown in FIG. 1A , for example, the scraper device includes a scraper arm 300 and a scraper blade 200 attached to the scraper arm 300. For example, the scraper arm 300 cooperates with a drive motor (not shown). And the scraper blade 200 has a scraper rubber 100 and a scraper bracket 210 supporting the scraper rubber 100. For the scraper bracket 210, in addition to the Figure 1 In addition to the tournament type shown in A, various known support members such as a flat type may be adopted.

[0041] like Figure 1 As shown in FIG. 2B , the blade rubber 100 includes a base 1 which is an attachment portion of the blade holder 210 of the blade rubber 100, and a lip 3 which is swingably coupled to the base 1 through a neck 2. The scraper blade is formed to have a substantially uniform cross-sectional shape in the longitudinal direction.

[0042] In a cross section in a direction orthogonal to the longitudinal direction of the scraper blade, the lip 3 includes a shoulder extending to a side farther than the neck on the end of the neck side of the lip 3. In addition, in order to stabilize the contact posture of the scraper blade, a tapered portion 4 may be provided, the width of which gradually decreases from a side close to the base 1 in a direction away from the base 1. In addition, the degree of gradual decrease in the width of the tapered portion 4 may be changed in a step-like manner. For example, the lip 3 may have a lip end portion, wherein the degree of gradual decrease in the width of the tapered portion becomes smaller on a side close to the end of the lip away from the base 1. In addition, on the lip end portion, a portion having the same or substantially the same width from the side close to the base 1 toward the end may be provided. Figure 1 The wiper blade shown in B has a plate-like member that is continuous to the tapered portion 4 at the tip end side of the lip portion 3 .

[0043] The scraper device cleans the surface of the member to be cleaned by bringing at least a portion of the tip of the lip 3 into contact with the surface of the windshield as the member to be cleaned (represented by the glass surface). As a result, at least a portion of the tip of the lip 3 constitutes a contact portion that contacts the windshield. In the lip 3, the contact portion is formed by extending in the longitudinal direction of the scraper rubber.

[0044] For example, in a cross section in a direction orthogonal to the longitudinal direction of the scraper blade, the neck 2 has a smaller width than the base 1 and the lip 3. In addition, for example, the lip is an elastic body. As a result, the lip 3 is inclined in the scraping direction, and at least a portion of the lip 3 contacts the surface of the member to be cleaned.

[0045] like Figure 1 As shown in FIG. 2B , the lip 3 has a first side surface 5 continuous from the tapered portion 4, a second side surface 6 on the side opposite to the first side surface 5, and a terminal surface 7 on the side farthest from the base 1 of the lip 3, which together with the first side surface 5 and the second side surface 6 form a first edge 8 and a second edge 9. The portion of the terminal end of the lip 3 cut off by the regeneration device is a portion including at least the terminal surface 7. For example, the terminal end of the lip 3 may be cut off parallel to the terminal surface 7, thereby forming a new terminal surface.

[0046] As described above, the contact portion of the lip 3 with the windshield is worn due to long-term use, and irregular scratches and the like may occur. Patent document 1 discloses a regeneration cutter for cutting off the end of the lip and regenerating the scraper rubber. However, the scraping performance of the regenerated scraper blade regenerated by the regeneration cutter according to patent document 1 is lower than that of a brand new product of the scraper blade. Specifically, irregular scratches may be generated at the end portion, etc. The reason can be considered as follows.

[0047] The blade rubber is formed of natural rubber or synthetic rubber, which is generally soft. And, when the end of the soft blade rubber is cut off by the regeneration cutter according to Patent Document 1, there is a case where the cut surface of the lip of the blade rubber is deformed in the initial process of cutting.

[0048] Specifically, when cutting, the blade 31 of the regenerating cutter is brought into contact with the side surface of one end side of the lip 3 of the blade rubber (see Figure 2 A), and then the blade 31 enters the lip 3. At this time, the side surface of the lip 3 may be as follows due to the pressure of the blade 31 when entering. Figure 2 B. As a result, Figure 2 As shown in FIG. 3C, in some cases, the end of the blade rubber becomes an R surface after cutting. Since the regenerated blade rubber having the above shape has an R surface at the end on the side where the blade enters, there is a possibility that irregular scratches occur on the end surface.

[0049] As described above, there is a cause for the shape of the end of the regenerated scraper rubber to be deformed in the initial process of cutting. The inventors have conducted an examination to prevent the deformation of the cutting surface in the manufacturing process of the regenerated scraper rubber, that is, in the initial process of cutting the scraper rubber, so that the scraper rubber can be regenerated with higher accuracy and a regenerated scraper blade having a scraping performance as good as that of a brand new scraper rubber can be obtained. As a result, the following scraper rubber regeneration device, scraper rubber regeneration method, and regenerated scraper blade manufacturing method have been found.

[0050] One aspect of a scraper rubber regeneration device according to the present disclosure is a scraper rubber regeneration device, wherein the scraper rubber is provided on a scraper blade of a scraper device for a windshield of a vehicle, wherein

[0051] The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber.

[0052] The scraper rubber includes a base, a lip, and a neck, wherein the base is an attachment portion for attaching the scraper rubber to the scraper support, and the neck connects the lip to the base in a swingable manner.

[0053] At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield.

[0054] The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber,

[0055] The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction.

[0056] The regeneration device includes a clamping member that clamps the lip portion,

[0057] The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber, and

[0058] The clamping member is arranged at a position capable of clamping at least a portion into which the blade portion of the lip enters, and a position of the clamping member relative to the blade rubber is fixed.

[0059] Will use Figure 3 , Figure 4 A. Figure 4 B. Figure 5 A. Figure 5 B. Figure 6 A. Figure 6 B and Figure 7 A blade rubber regenerating device according to one aspect of the present disclosure is explained as an example. Figure 3 1 is a schematic diagram showing the appearance of the blade rubber regeneration device 20 . Figure 4 A and Figure 4 B is a schematic diagram for explaining the cutting unit 30 including the blade and the cutting action. Figure 5 A is a cross-sectional view of the cutting unit 30 and the scraper rubber of the clamping member 21 in the short side direction, Figure 5 B is an enlarged view of the vicinity of the blade portion 31 .

[0060] The blade rubber regenerating device 20 includes a lip clamping member 21 as a blade rubber fixing member for fixing the blade rubber 100. The clamping member 21 fixes the blade rubber by clamping the lip 3 from the short side direction of the blade rubber. For example, Figure 1 The first side surface 5 and the second side surface 6 in B are clamped. That is, the clamping member 21 serves to clamp the lip 3 from both side portions of the lip 3 in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber.

[0061] exist Figure 3 In the embodiment, the clamping member 21 is fixed to the base 16 by the holding member 15 having an L-shaped cross section as viewed in the longitudinal direction of the blade rubber.

[0062] like Figure 5 B (enlarged image on the right) and Figure 6B, the clamping member 21 is arranged in a position capable of clamping at least a portion (end A) into which the blade 31 enters relative to the lip 3. In the figure, the clamping member 21 clamps the entire area in the longitudinal direction of the lip 3, including the portion into which the blade 31 enters from both sides. And the position of the clamping member relative to the scraper rubber is fixed.

[0063] Note that there is no particular limitation on the aspect of applying the blade rubber to the regeneration device. Figure 5 As shown in A, the scraper rubber removed from the scraper holder can be attached to the regeneration device, or the scraper rubber to which the scraper holder is attached can be attached to the regeneration device.

[0064] The blade rubber regenerating device 20 includes a blade portion 31 for cutting off the tip of the lip portion 3 in the longitudinal direction of the blade rubber 100. For example, Figure 3 , Figure 4 A and Figure 4 In FIG. 1B , the blade rubber regeneration device 20 includes a cutting unit 30 and may have a blade 31 ( Figure 3 not shown).

[0065] The cutting unit 30 can move along the longitudinal direction of the blade rubber 100 and the clamping member 21. Figure 3 In the embodiment, the cutting unit 30 can move along the guide track 17. Figure 3 In the embodiment, the cutting unit 30 can be moved manually by means of a handle 32, but may not be manually driven but may be driven by an electric cylinder, a motor or the like.

[0066] Note that in order to facilitate the movement of the cutting unit 30 , the cutting unit 30 and the clamping member 21 may be non-contact.

[0067] Figure 4 A and Figure 4 B is a bird's-eye view of the cutting unit 30 in the blade rubber regenerating device 20 as viewed from the upper part of the device. Figure 4 A is an enlarged view of the vicinity of the cutting unit 30, Figure 4 B is a diagram of the entire blade rubber in the longitudinal direction including the gripping member 21. The cutting unit 30 including the blade portion 31 moves along the longitudinal direction of the blade rubber 100 in the direction of the arrow from the end A to the end B in the figure.

[0068] And, the blade 31 enters the lip 3 from the side portion of the end of the lip 3 in the end A (the end A is one end in the longitudinal direction of the scraper rubber 100), moves relatively toward the end B which is the other end in the longitudinal direction, and a part of the end of the lip 3 is cut off. By performing the cutting as described above, the worn / deteriorated part is removed, and the regenerated scraper rubber can be obtained.

[0069] Figure 4 A and Figure 4 The regeneration device 20 shown in B is such an aspect that the blade 31 (cutting unit 30) moves, but the regeneration device according to the present disclosure is not limited to the above aspect, but only needs to be constructed so that the blade 31 can be relatively moved from the end A to the end B. For example, it may be a configuration in which the cutting unit 30 including the blade 31 is fixed, and the clamping member 21 that fixes the scraper rubber 100 moves relative to the cutting unit 30. In addition, the blade 31 preferably moves so as to cut off the first edge 8, the second edge 9, and the end surface 7. That is, at least a portion of the contact portion to be removed preferably includes the top end surface 7 and the top end side edges 8, 9 of the lip 3. Preferably, the blade 31 is constructed to be able to cut off the lip 3 so that the new end surface formed by cutting becomes parallel to the end surface 7 to be cut.

[0070] The present inventors consider the following reasons: With the above-mentioned blade rubber regenerating device 20 , deformation of the cut surface of the lip 3 is suppressed, and a regenerated blade rubber with higher accuracy can be obtained as follows.

[0071] The suppression of deformation at the start of cutting will be explained. The regenerating device 20 includes a clamping member 21 that clamps the lip 3 from both side portions in the short side direction of the lip 3. And the clamping member 21 is arranged at a position capable of clamping at least the portion where the blade 31 enters the lip 3, and the position of the clamping member relative to the scraper rubber is fixed. That is, unlike the cutter in Patent Document 1, in the regenerating device 20, the clamping member 21 does not move relative to the scraper rubber even by the movement of the blade 31, but clamps the lip 3.

[0072] As described above, it is considered that, by clamping the portion where the blade 31 of the lip 3 enters, the elastic deformation of the lip 3 due to the pressure when the blade 31 enters the side of the lip 3 is suppressed. Therefore, in the lip, the end portion on the side of the entry portion of the blade 31 after cutting can be suppressed from becoming an R surface.

[0073] For example, if there is no clamping member 21, as Figure 2 C and Figure 6 As shown in A, in some cases, the end portion of the entry side of the blade 31 may become an R surface due to the elastic deformation of the lip edge portion 3, as shown by the dotted line. In addition, if the thickness of the cut (cutting margin) is particularly small, in some cases, the action of the blade 31 entering the lip 3 becomes difficult due to the elastic deformation of the lip 3 caused by the pressure when the blade 31 enters the side surface of the lip 3. On the other hand, if there is a clamping member 21 that clamps the lip 3 from both sides, as shown in Figure 6As shown by the dotted line in B, deformation of the cut surface can be suppressed. This is considered to be so that excessive elastic deformation of the lip 3 is suppressed when the blade enters the lip 3, and pressure is uniformly applied to the lip 3.

[0074] Note that, in order to suppress deformation of the entry portion of the blade 31, it is only necessary for the clamping member 21 to clamp at least the portion where the blade 31 enters. Figure 4 A and Figure 4 As shown in B, the clamping member 21 can clamp the lip 3 over the entire area in the longitudinal direction of the lip 3.

[0075] As described above, by using the clamping member, the elastic deformation of the lip when the blade enters the lip can be suppressed, and it is considered that the deformation of the cutting surface of the lip can be suppressed. Therefore, it is possible to prevent the cutting surface from becoming as Figure 2 C and Figure 6 The R shape shown in A can regenerate the blade rubber with higher accuracy.

[0076] In addition, as cutting methods, freeze cutting that eliminates or reduces the elasticity of the lip, laser cutting that cuts before elastic deformation occurs by greatly increasing the cutting power, and water jet cutting can be considered. However, according to the above-mentioned regeneration device 20, compared with the above-mentioned cutting method, the device cost remains low, and high mass productivity and high-precision regeneration can be achieved.

[0077] Hereinafter, each structure of the blade rubber regenerating device 20 will be described.

[0078] The regeneration device 20 includes a blade portion 31. The blade for the blade portion 31 only needs to cut the lip portion by relative movement. The angle (blade angle θA) formed by the blade relative to the short side direction of the lip portion 3 of the scraper is not particularly limited, and the blade portion 31 only needs to be provided in the regeneration device 20 so that the angle is preferably 20° to 70°, more preferably 30° to 60°, or further preferably 40° to 50°. Figure 4 A and Figure 4 B is an example in which the angle θA becomes 45°.

[0079] In the longitudinal cross-sectional view of the scraper rubber of the regeneration device 20, assuming that the blade edge is guided to the base 1 side as +, the angle θB (not shown) formed by the longitudinal direction of the lip 3 (for example, the horizontal surface of the device) and the direction perpendicular to the blade length direction of the blade and parallel to the blade body is preferably 0 to 10°, more preferably 2° to 8°, or further preferably 3° to 7°. When the angle θB formed is within the above range, it means that the blade is slightly inclined to the base 1 side of the scraper rubber. As a result, the cutter blade can be easily escaped to the side opposite to the advancing direction of the blade.

[0080] The edge can be double-edged or single-edged. Figure 3 In the regeneration device 20 shown, etc., a double-edged blade 31 is used.

[0081] The blade thickness is not particularly limited, but is preferably 0.05 mm to 0.50 mm or more preferably 0.10 mm to 0.30 mm.

[0082] The tip angle (edge ​​angle) of the blade is not particularly limited, and is preferably 15° to 55°, more preferably 25° to 50°, or further preferably 35° to 45°. Within the above range, the lip can be easily cut off appropriately. The regeneration device 20 shown is an example of 45°.

[0083] The blade 31 only needs to be fixed to the regeneration device 20 (cutting unit 30) with such a force that the angle of the blade does not change during cutting. For example, it can be fastened by bolts or the like. The blade 31 can be fixed to Figure 4 A side. For example, by placing the blade 31 Figure 4 On the left and right cutting units 30 in A, when viewing the regenerating device 20 from the lip end side (eg, the upper side of the device), the blades 31 can be fixed to both sides across the lip. As a result, the cutting accuracy is further improved.

[0084] The feed speed of the blade in the regeneration device 20 (i.e., the speed of the above-mentioned relative movement) is not particularly limited as long as it is within the following range: the lip 3 can be properly cut off and is preferably 500mm / s to 5000mm / s, more preferably 800mm / s to 2000mm / s, or further preferably 900mm / s to 1500mm / s.

[0085] The slice width of the lip 3 cut by the blade 31 is not particularly limited, or it conforms to the size of the lip of the scraper rubber to be used. The slice width (the length of the lip in the short side direction of the scraper rubber in the portion to be cut (the length between the first side 5 and the second side 6)) is preferably 0.1mm to 5.0mm, 0.2mm to 2.0mm, 0.3mm to 1.0mm, etc. The material of the blade 31 is not particularly limited, but a known material can be appropriately used according to the scraper rubber to be cut. For example, stainless steel, iron, etc. can be used.

[0086] The regeneration device 20 includes a clamping member 21 that clamps at least a portion of the lip 3 from both sides of the lip 3. The clamping member 21 clamps and fixes the lip 3, and suppresses elastic deformation caused by the entry of the blade. The clamping member 21 only needs to be arranged at a position that can clamp the portion of the lip where the blade 31 enters. The portion where the blade enters refers to a portion where the elastic deformation of the lip due to the entry of the blade can be suppressed by clamping near the contact point between the blade and the lip. For example, when the two sides of the lip are not clamped, it is a portion near the position where the blade enters and is elastically deformed due to the entry of the blade.

[0087] The clamping member 21 can clamp the entire lip. Figure 4 A and Figure 4 B, the clamping member 21 can clamp and fix the entire area of ​​the lip in the longitudinal direction from both sides by a member sufficiently longer than the longitudinal length of the blade rubber 100. In addition, for example, the clamping member 21 clamps the base 1 side instead of the position where the blade 31 enters.

[0088] The material of the clamping member 21 is not particularly limited, and known materials such as steel including pre-hardened steel, stainless steel, aluminum, etc. can be used.

[0089] The pressure when the lip 3 is clamped and fixed by the clamping member 21 is not particularly limited, but can be appropriately changed according to the material of the blade rubber. The fixing only needs to be performed with a force to the extent that the lip 3 is fixed and the elastic deformation caused by the entry of the blade 31 can be suppressed. In addition, the fixing can be performed with such a force that the lip is not deformed unnecessarily due to being clamped. The fixing method is not particularly limited, and a known method such as fastening with a bolt or the like can be adopted.

[0090] For example, as the tightening force of the bolt when the lip portion is clamped by tightening the clamping member 21 with the bolt, 5.0 N / m to 50.0 N / m, 10.0 N / m to 30.0 N / m, or 12.0 N / m to 20.0 N / m can be preferably cited. For example, the clamping member 21 preferably clamps a position corresponding to the portion into which the blade enters with the aforementioned tightening force.

[0091] Figure 7 By further expanding Figure 5 B is a diagram obtained from the periphery of the end of the lip 3, Figure 5 B is a cross-sectional view of the blade rubber short side of the cutting unit 30 and the clamping member 21. It is assumed that the portion of the lip 3 clamped by the clamping member 21 is the clamping portion, and the length of the portion of the end of the lip 3 protruding from the clamping portion to the outside of the clamping member 21 is the protruding length A of the lip.

[0092] From the viewpoint of being able to more easily suppress elastic deformation of the lip portion 3 , A is preferably 0.10 mm to 1.00 mm, more preferably 0.20 mm to 0.50 mm, and further preferably 0.30 mm to 0.40 mm.

[0093] In addition, if Figure 7 As shown, the length (shortest distance) from the clamped portion of the lip portion clamped by the clamping member 21 to the tip of the blade is assumed to be a length B. From the viewpoint of being able to more easily suppress the elastic deformation of the lip portion 3, B is preferably 0.200 mm or less, more preferably 0.150 mm or less, and further preferably 0.130 mm or less. The smaller the lower limit, the better, but in order to prevent interference between the blade and the clamped portion, the length is desired to exceed 0.000 mm.

[0094] B can be exemplified as preferably exceeding 0.000 mm and being 0.200 mm or less, exceeding 0.000 mm and being 0.150 mm or less, exceeding 0.000 mm and being 0.130 mm or less.

[0095] In addition, from the viewpoint of being able to more easily suppress elastic deformation of the lip portion 3 , the value of B / A is preferably 0.10 to 0.55, more preferably 0.20 to 0.45, or further preferably 0.30 to 0.40.

[0096] In addition, Figure 7 The cutting thickness of the end of the lip 3 corresponding to AB in the scraper rubber (the length in the base-to-end direction of the lip) can be changed as appropriate according to the purpose of regeneration, the length of the lip before regeneration, and the degree of deterioration of the lip, and there is no particular limitation. The cutting thickness is preferably 0.05 mm to 1.00 mm or more preferably 0.10 mm to 0.50 mm.

[0097] The scraper blade or scraper rubber regenerated by the regeneration device is not particularly limited, but a known scraper blade or scraper rubber can be used. For example, natural rubber, isoprene rubber, chloroprene rubber, EPDM rubber, nitrile rubber, silicone rubber, fluororubber, chlorosulfonated polyethylene rubber, butyl rubber, styrene-butadiene rubber, butadiene rubber, ethylene acrylate rubber, polyurethane, EVA resin, etc. can be exemplified.

[0098] The blade rubber may be surface-treated by a known method such as water-repellent coating, graphite coating, or the like.

[0099] The Fahrenheit hardness of the blade rubber is not particularly limited, but is preferably 45 to 85 degrees or more preferably 70 to 85 degrees. Within the above range, elastic deformation of the lip portion can be more easily suppressed. The Fahrenheit hardness can be obtained by performing measurement using a Fahrenheit microhardness meter (manufactured by Wallace Instruments) as a measuring instrument in accordance with Japanese Industrial Standard (JIS) K6253-2: 2012.

[0100] The length of the blade rubber in the longitudinal direction, the thickness of the lip portion, and the like are not particularly limited, but any length within a known range can be used.

[0101] Example

[0102] Hereinafter, the present invention will be specifically explained by using examples. Note that the present invention is not limited to the following examples. In the following recipes, unless otherwise specified, the parts meet the quality standards.

[0103] <Scraper Rubber>

[0104] The following commercially available scraper rubbers were used.

[0105] Length of blade rubber in longitudinal direction: 450 mm (graphite coated product)

[0106] Manufacturer: Nippon Wiper Blade Co., Ltd.

[0107] Model: SW1G

[0108] Fahrenheit hardness: 56 degrees

[0109] [Example 1]

[0110] <Scraper rubber recycling device>

[0111] As the blade rubber regenerating device according to this embodiment, a Figure 3 , Figure 4 A. Figure 4 B. Figure 5 A. Figure 5 B. Figure 6 A. Figure 6 B and Figure 7 The blade rubber regenerating device in the aspect explained in the aforementioned aspect. More specifically, the following objects are prepared. The length between the holding members 15 is set to 1000 mm.

[0112] (Blade 31)

[0113] By using the following blades, it is fixed to the cutting unit 30 in such a manner as to have the following angles A and B.

[0114] Blade type: High-speed steel (SKH material) (product name and material), double edge, end angle (edge ​​angle) 45 degrees, three-time polishing (DLC coated product), blade thickness: 0.25mm

[0115] Blade angle θA: 45°

[0116] Angle of the blade relative to the horizontal surface of the fixture (forming angle θB): 5°

[0117] Blade pressure: The blade is clamped in Figure 5 In the cutting unit 30 shown in B, both sides of the blade are fastened by bolts.

[0118] (Clamping member 21)

[0119] The clamping member is as follows, and the blade rubber is fixed according to the blade portion 31 in a manner having the following sliding width, protruding length A, and length B.

[0120] Material of the clamping member 21: Free-cutting pre-hardened steel (article number: NAK55)

[0121] -Pressing force: 14.7N / m (clamped by tightening with M3 bolts using this tightening force)

[0122] - Slice width: 0.7mm

[0123] -Protrusion length A: 0.35mm

[0124] - Length B (length from the gripping part to the tip of the blade): 0.125 mm

[0125] (Cutting)

[0126] As described above, in the regeneration device 20 to which the scraper rubber is fixed, the cutting unit 30 is moved by using a robo cylinder (article number: RCS3-CT8C, manufactured by IAI Corporation) so that the feed speed of the blade becomes 1000 mm / sec, the lip is cut from end A to end B, and the regenerated scraper rubber is obtained.

[0127] [Comparative Example 1]

[0128] In Example 1, the pressing force of the clamping member 21 was set to 0 N / m. Similar to Example 1, a regenerated blade rubber was obtained.

[0129] [Comparative Example 2]

[0130] In Example 1, the pressing force of the clamping member 21 was set to 0 N / m, the protruding length A to 2 mm, and the length B to 0.125 mm. Similar to Example 1, a regenerated blade rubber was obtained.

[0131] (evaluate)

[0132] The obtained regenerated blade rubber was evaluated by the following procedure.

[0133] The cutting unit 30 is removed from the regenerating device for cutting, and a state is set in which no object exists above the cutting surface in the vertical direction of the regenerated blade rubber. Then, an ultra-high-speed / high-precision laser dimension measuring instrument (article number: LS-9030, manufactured by Keyence Corporation, maximum measuring range: 30 mm) is placed on the surface of the flat plate 16 of the regenerating device so that the regenerated blade rubber is positioned between the laser light projecting part and the light receiving part of the high-speed / high-precision laser dimension measuring instrument.

[0134] At this time, the distance between the reference position of the distance measurement of the high-speed / high-precision laser measuring instrument and the surface of the flat plate 16 is adjusted so that the entirety of the cut surface in the longitudinal direction is located below the reference position in the vertical direction. Then, the high-speed / high-precision laser measuring instrument is moved parallel to the longitudinal direction of the regenerated blade rubber, and the distance (height) from the reference position of the cut surface at the end A of the regenerated blade rubber to a position of 10 mm in the direction (inside) of the end B is measured.

[0135] [Table 1]

[0136] Table 1

[0137]

[0138] *1: In Comparative Example 1, the blade could not enter the side surface of the blade rubber end A. The reason why the blade could not enter the side surface is believed to be that the thickness of the portion to be cut (cutting margin) was small.

[0139] In Example 1, the difference between the height at the end A and the height at the position where the cut was made 10 mm inward from the end A was slight, and the cut surface hardly became an R-surface. In Comparative Example 2, the height at the position where the cut was made 10 mm inward from the end A was smaller than the height at the end A, and the cut surface became an R-surface.

[0140] The present disclosure relates to the following configurations and methods.

[0141] (Construction 1)

[0142] A scraper rubber regeneration device, wherein the scraper rubber is arranged on a scraper blade of a scraper device for a windshield of a vehicle, wherein

[0143] The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber.

[0144] The scraper rubber includes a base, a lip, and a neck, wherein the base is an attachment portion for attaching the scraper rubber to the scraper support, and the neck connects the lip to the base in a swingable manner.

[0145] At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield.

[0146] The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber,

[0147] The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction.

[0148] The regeneration device includes a clamping member that clamps the lip portion,

[0149] The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber, and

[0150] The clamping member is arranged at a position capable of clamping at least a portion into which the blade portion of the lip enters, and a position of the clamping member relative to the blade rubber is fixed.

[0151] (Construction 2)

[0152] The scraper rubber regeneration device according to configuration 1, wherein

[0153] The clamping member is a member that clamps the entire area of ​​the lip portion in the longitudinal direction from the two side portions.

[0154] (Construction 3)

[0155] The blade rubber regenerating device according to configuration 1 or 2, wherein, assuming that a length from a gripped portion of the lip gripped by the gripping member to a tip of the blade is a length B, the length B is not greater than 0.200 mm.

[0156] (Method 4)

[0157] A method for regenerating a scraper rubber provided in a scraper blade for a windshield wiper device in a vehicle,

[0158] The method comprises:

[0159] A step of fixing the blade rubber to the regeneration device according to any one of configurations 1 to 3; and

[0160] The step of cutting off a portion of a distal end of the lip portion of the blade rubber by the regenerating device.

[0161] (Method 5)

[0162] A method for producing a regenerated scraper rubber for regenerating a scraper rubber provided in a scraper blade for a windshield scraper device in a vehicle,

[0163] The method comprises:

[0164] A step of fixing the blade rubber to the regeneration device according to any one of configurations 1 to 3; and

[0165] The step of obtaining the regenerated blade rubber by cutting off a part of the distal end of the lip portion of the blade rubber by the regenerating device.

[0166] (Construction 6)

[0167] A scraper rubber regeneration device, the scraper rubber is used for a scraper blade, wherein

[0168] At least a portion of the tip of the scraper rubber forms a contact portion that contacts the scraped object.

[0169] The regenerating device includes a blade portion that cuts off the end of the blade rubber along the longitudinal direction of the blade rubber.

[0170] The regenerating device causes the blade portion to enter the scraper rubber from a side portion of the tip of the scraper rubber at an end portion A which is one end portion in the longitudinal direction of the scraper rubber and relatively move toward an end portion B which is the other end portion in the longitudinal direction, and cuts off the tip of the scraper rubber, and

[0171] The regeneration device also includes:

[0172] A clamping member clamps at least a portion of the blade rubber from both sides of the blade rubber in a cross-sectional view of the blade rubber in a direction orthogonal to the longitudinal direction of the blade rubber.

[0173] The present disclosure is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present disclosure. Therefore, the following claims are attached to clarify the scope of the present disclosure.

[0174] This application claims priority based on Japanese Patent Application No. 2022-156513 filed on September 29, 2022, Japanese Patent Application No. 2022-205755 filed on December 22, 2022, and Japanese Patent Application No. 2023-145277 filed on September 7, 2023, the entire contents of which are incorporated herein by reference.

[0175] Description of Reference Numerals

[0176] 3: lip; 20: scraper rubber regeneration device; 21: clamping member; 30: cutting unit; 31: blade

Claims

1. A scraper rubber regeneration device, wherein the scraper rubber is provided on a scraper blade of a scraper device for a windshield of a vehicle, wherein The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber. The scraper rubber includes a base, a lip, and a neck, wherein the base is an attachment portion for attaching the scraper rubber to the scraper support, and the neck connects the lip to the base in a swingable manner. At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield. The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber, The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction. The regeneration device includes a clamping member that clamps the lip portion, the clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber, and The clamping member is arranged at a position capable of clamping at least a portion into which the blade portion of the lip enters, and a position of the clamping member relative to the blade rubber is fixed.

2. The scraper rubber regeneration device according to claim 1, wherein The clamping member is a member that clamps the entire area of ​​the lip portion in the longitudinal direction from the two side portions.

3. The scraper rubber regeneration device according to claim 1 or 2, wherein: Assuming that the length from the clamped portion of the lip clamped by the clamping member to the tip of the blade is a length B, the length B is not greater than 0.200 mm.

4. A method for regenerating a blade rubber, the blade rubber being provided in a scraper blade for a windshield wiper device in a vehicle, The method comprises: The step of fixing the scraper rubber to the regeneration device according to any one of claims 1 to 3; as well as The step of cutting off a portion of a distal end of the lip portion of the blade rubber by the regenerating device.

5. A method for producing a regenerated scraper rubber for regenerating a scraper rubber provided in a scraper blade for a windshield scraper device in a vehicle, The method comprises: The step of fixing the scraper rubber to the regeneration device according to any one of claims 1 to 3; as well as The step of obtaining the regenerated blade rubber by cutting off a part of the distal end of the lip portion of the blade rubber by the regenerating device.

6. A scraper rubber regeneration device, the scraper rubber is used for a scraper blade, wherein At least a portion of the tip of the scraper rubber forms a contact portion that contacts the scraped object. The regenerating device includes a blade portion that cuts off the end of the blade rubber along the longitudinal direction of the blade rubber. The regenerating device causes the blade portion to enter the scraper rubber from a side portion of the tip of the scraper rubber at an end portion A which is one end portion in the longitudinal direction of the scraper rubber and relatively move toward an end portion B which is the other end portion in the longitudinal direction, and cuts off the tip of the scraper rubber, and The regeneration device also includes: A clamping member clamps at least a portion of the blade rubber from both sides of the blade rubber in a cross-sectional view of the blade rubber in a direction orthogonal to the longitudinal direction of the blade rubber.

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