Vehicle wiper device

Abstract

The present invention provides a vehicle wiper device that allows the positional relationship between the driven shaft and the drive shaft of the link mechanism to be changed within the same device, and that can be used in multiple vehicle models. [Solution] The drive shaft 22 that drives the main arm of the wiper arm and the driven shaft 23 that supports the sub-arm are provided with position adjustment mechanisms 29x, 29y that allow the circumferential position of the driven shaft 23 relative to the drive shaft 22 and the radial position of the drive shaft 22 to be changed.

Description

Technical Field

[0001] The present disclosure relates to a vehicle wiper device.

Background Art

[0002] In a vehicle wiper device, there is one in which a link mechanism is incorporated so that the wiper can wipe up to an area that cannot be wiped when the shape of the wiping area of the wiper is a general arc shape. In this type of wiper device, it is possible to set the shape of the wiping area suitable for the vehicle type by setting the operation of the link mechanism according to the shape of the wiping surface different for each vehicle type (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As one method for setting the shape of the wiping area of the wiper, there is to change the relationship between the drive link and the driven link provided in the link mechanism, that is, the positional relationship of the driven shaft with respect to the drive shaft. However, in a general aspect in which the drive shaft and the driven shaft are incorporated into the wiper device in a one-to-one relationship for each vehicle type as in the above document, it is necessary to design and manufacture a wiper device in which the shaft position is newly set again for each different vehicle type.

[0005] An object of the present disclosure is to provide a vehicle wiper device capable of changing the positional relationship of the driven shaft with respect to the drive shaft of the link mechanism in the same device and being shared by a plurality of vehicle types.

Means for Solving the Problems

[0006] A vehicle wiper device according to one aspect of the present disclosure includes a link mechanism (17, 36) for causing a wiper (11, 31) to perform a complex wiping operation combining a basic arc motion with predetermined ancillary motions, wherein the link mechanism comprises a drive member (14, 34) integrally connected to a drive shaft (22) driven based on the drive of a wiper motor (24), and a driven member (15, 35) supported by a driven shaft (23) positioned relative to the drive shaft and moving in accordance with the operation of the drive member, wherein the driven shaft is integrally provided with a shaft support member (26), and the shaft support member is fixed to a fixing member (25, 55) for fixing the vehicle wiper device to the vehicle body, and the vehicle wiper device includes a position adjustment mechanism (29x, 29y) that can change at least one of the circumferential position and radial position of the driven shaft on the drive shaft.

[0007] According to the above configuration, in the drive member and driven member that constitute the link mechanism for causing the wiper to perform a complex wiping action, at least one of the circumferential position and radial position of the driven shaft on the drive shaft can be changed by the position adjustment mechanism of the vehicle wiper device. In other words, the position of the driven shaft can be changed in the same device, and it becomes possible to set the shape of the wiping area of ​​different wipers, so that the same device can be used in multiple vehicle models. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a schematic diagram of a vehicle wiper device in the first embodiment. [Figure 2] Figure 2 is a perspective view of the wiper drive device in the first embodiment. [Figure 3] Figure 3 is a perspective view of the fixing bracket in the first embodiment. [Figure 4] Figure 4 is a cross-sectional view showing the fixing configuration between the fixing bracket and the shaft support plate in the first embodiment. [Figure 5] Figure 5 is a schematic diagram of a vehicle wiper device in the second embodiment. [Figure 6] Figure 6 is a perspective view of the wiper drive device in the second embodiment. [Figure 7] Figure 7 is a schematic diagram of a vehicle wiper device in the third embodiment. [Modes for carrying out the invention]

[0009] (First Embodiment) The following describes a first embodiment of a vehicle wiper device. (Vehicle wiper device 10) As shown in Figure 1, the vehicle wiper device 10 of this embodiment wipes off, for example, raindrops and other deposits adhering to the wiping surface Wsa of the front windshield WS of a vehicle. The vehicle wiper device 10 comprises a wiper 11 that performs a reciprocating wiping operation on the wiping surface Wsa, and a wiper drive device 21 that drives the wiper 11 to perform the reciprocating wiping operation.

[0010] (Wiper 11) The wiper 11 of this embodiment includes a wiper arm 12 that swings back and forth about a base end, and a wiper blade 13 connected to the tip of the wiper arm 12.

[0011] The wiper arm 12 comprises a main arm 14 whose base end is directly connected to the drive shaft 22 of the wiper drive unit 21, and a sub-arm 15 whose base end is directly connected to a driven shaft 23 integrally provided with the wiper drive unit 21. The wiper arm 12 also includes a tip connecting member 16 that rotatably connects the tips of the main arm 14 and the sub-arm 15. The main arm 14, the sub-arm 15, and the tip connecting member 16 are configured as a link mechanism 17 having connecting axes aligned substantially perpendicular to the wiping surface WSa. A wiper blade 13 is connected to the tip connecting member 16. The wiper blade 13 is positioned so that the blade rubber (not shown) is in contact with the wiping surface WSa.

[0012] When the main arm 14 of the wiper arm 12 is driven, the wiper blade 13 tilts within a predetermined angle relative to the wiper arm 12 in conjunction with the reciprocating oscillation of the main arm 14 due to the function of the link mechanism 17. As a result, the wiper blade 13 performs a complex wiping action on the wiping surface Wsa, combining the basic arc motion with an additional tilting motion that occurs towards the ends of the arc motion. In other words, by combining the tilting motion of the wiper blade 13, it is possible to set the shape of the wiping area of ​​the wiper blade 13 to match the shape of the wiping surface Wsa for each vehicle model, for example, by bringing the reversal position of the reciprocating wiping motion as close as possible to the edge of the wiping surface Wsa to expand the wiping area.

[0013] (Wiper drive device 21) As shown in Figure 2, the wiper drive device 21 of this embodiment includes an electric wiper motor 24 having a drive shaft 22 for directly driving the main arm 14 of the wiper arm 12. The tip of the drive shaft 22 protruding from the wiper motor 24 has a mounting portion 22a for integrally connecting the base end of the main arm 14. The wiper motor 24 is configured to reciprocately rotate its own drive shaft 22 in order to cause the main arm 14 to swing back and forth. The wiper drive device 21 also includes a fixing bracket 25 as a fixing member for fixing to the vehicle body (not shown) and a shaft support plate 26 as a shaft support member having a driven shaft 23 for supporting the sub-arm 15.

[0014] (Fixing bracket 25) As shown in Figures 2 and 3, the fixing bracket 25 is made of a plate-shaped material and has a plurality of body fixing parts 25a for fixing to the vehicle body with fixing bolts 27, and an opening 25b and a mounting part 25c located inside the area surrounded by the plurality of body fixing parts 25a. The wiper motor 24 is located on the lower surface of the mounting part 25c, and the wiper motor 24 is mounted such that the drive shaft 22 protrudes upward from the opening 25b located in the center of the mounting part 25c.

[0015] The mounting portion 25c is configured on concentric circles centered on the drive shaft 22 around the opening 25b through which the drive shaft 22 protrudes. The mounting portion 25c has, for example, three screw holes 25d at equal angular intervals on the concentric circles and, for example, twelve recesses 25e at equal angular intervals on a concentric circle inside the screw holes 25d. The twelve recesses 25e have the same shape as each other and, for example, have a circular cross-sectional shape.

[0016] (Shaft support plate 26) As shown in FIGS. 2 and 4, the shaft support plate 26 is made of a plate-like metal material and includes an annular portion 26a and an extension portion 26b extending radially outward from the annular portion 26a. The annular portion 26a is configured with a mounting portion 26c corresponding to the mounting portion 25c of the fixed bracket 25. The mounting portion 26c has three long holes 26d on the concentric circle where the screw holes 25d of the fixed bracket 25 are located in the mounted state with the fixed bracket 25. The three long holes 26d have the same shape as each other and are each in an arc shape along the concentric circle within a range of approximately 120°. When the shaft support plate 26 is fixed to the fixed bracket 25, the mounting screw 28 is inserted into the long hole 26d and tightened to the screw hole 25d.

[0017] Further, the mounting portion 26c has protrusions 26e on the concentric circle where the recesses 25e are located. The protrusions 26e are provided, for example, at equal angular intervals in a number of 12 or less. The plurality of protrusions 26e have the same shape as each other and are each in a columnar shape that can be fitted into the recess 25e. The shaft support plate 26 can be changed in the mounting position with respect to the mounting portion 25c of the fixed bracket 25.

[0018] The extending portion 26b has a long hole 26f along the radial direction which is its extending direction (radially outward with respect to the drive shaft 22 in the mounted state to the fixed bracket 25). The driven shaft 23 is attached to the long hole 26f. The driven shaft 23 has a flange portion 23a in the middle portion and a spherical portion 23b at the tip portion. The driven shaft 23 is attached by abutting the flange portion 23a against the upper surface of the extending portion 26b and tightening a nut (not shown) against the male thread at the base end portion inserted through the long hole 26f. The driven shaft 23 is attached so as to sandwich the extending portion 26b in the plate thickness direction with the flange portion 23a and the nut. On the upper surface of the side edge of the long hole 26f of the extending portion 26b, a plurality of concavo-convex portions 26g are provided side by side in the extending direction of the extending portion 26b. The concavo-convex portions 26g can be fitted with concavo-convex portions (not shown) provided on the lower surface of the flange portion 23a of the driven shaft 23. The driven shaft 23 can be changed in the mounting position along the long hole 26f of the extending portion 26b.

[0019] As shown in FIGS. 1 and 2, the base end portion of the sub-arm 15 of the wiper arm 12 is connected to the tip portion of the driven shaft 23. The sub-arm 15 connected to the spherical portion 23b at the tip portion of the driven shaft 23 is supported in a state where tilting in the vertical direction is allowed together with rotation around the axis of the driven shaft 23. That is, since the wiping surface WSa wiped by the wiper 11 has a three-dimensional curved surface shape, such a support mode is necessary to drive the sub-arm 15 following the operation of the main arm 14.

[0020] (Operation of this embodiment) The operation of this embodiment will be described. The circumferential position of the driven shaft 23 with respect to the drive shaft 22 can be changed by the mounting position of the shaft support plate 26 around the drive shaft 22 with respect to the fixed bracket 25 by providing a position adjustment mechanism 29x using the long hole 26d or the like.

[0021] As shown in Figures 2 to 4, the shaft support plate 26 can be mounted at 12 locations at 30° intervals around the drive shaft 22, depending on the fit between its own protrusion 26e and the recess 25e of the fixing bracket 25. In this case, the fastening of the mounting screw 28 to the screw hole 25d via the elongated hole 26d can be done at any mounting position of the shaft support plate 26. The shaft support plate 26 is then positioned at a circumferential mounting position determined for each vehicle model, with the protrusion 26e and recess 25e fitted together, and fixed to the fixing bracket 25 by tightening the mounting screw 28 to the screw hole 25d via the elongated hole 26d. The shaft support plate 26 is fixed in a firm manner by the fit between the protrusion 26e and the recess 25e.

[0022] In addition, fastening with the mounting screws 28 may be performed on the wiper motor 24 via the elongated holes 26d and screw holes 25d (a configuration in which the mounting screws 28 are fastened and fixed to the screw holes provided in the gear housing of the wiper motor 24). In this configuration, fastening with the mounting screws 28 can serve to attach the wiper motor 24 to the fixing bracket 25 in addition to attaching the shaft support plate 26 to the fixing bracket 25.

[0023] Furthermore, the radial position of the driven shaft 23 relative to the drive shaft 22 can be changed by adjusting the mounting position of the driven shaft 23 relative to the extension portion 26b of the shaft support plate 26, by providing a position adjustment mechanism 29y using an elongated hole 26f or the like.

[0024] As shown in Figure 2, the radial position of the driven shaft 23 can be changed at multiple mounting positions along the elongated hole 26f of the extension 26b, depending on the fit relationship with the protrusions 26g provided along the elongated hole 26f. The driven shaft 23 is then positioned at a radial mounting position determined for each vehicle model, the protrusions 26g are fitted together, and the extension 26b is fixed by sandwiching it between the flange portion 23a and a nut (not shown). The driven shaft 23 is fixed in a firm manner by the fit of the protrusions 26g.

[0025] By using such a shaft support plate 26, the radial and circumferential positions of the driven shaft 23 relative to the drive shaft 22 can be changed, making it possible to easily change the shape of the wiping area of ​​the wiper 11. In other words, it is possible to easily set the shape of the wiping area of ​​the wiper 11 to a more suitable shape according to the shape of the wiping surface Wsa for each vehicle model.

[0026] (Effects of this embodiment) The effects of this embodiment will now be explained. (1-1) The vehicle wiper device 10 of this embodiment includes a link mechanism 17 for causing the wiper 11 to perform a complex wiping operation. The driving member and driven member constituting the link mechanism 17 correspond to the main arm 14 and sub-arm 15 of the wiper arm 12. In the drive shaft 22 that drives the main arm 14 and the driven shaft 23 that supports the sub-arm 15, the circumferential position of the driven shaft 23 relative to the drive shaft 22 and the radial position of the drive shaft 22 can be changed by the position adjustment mechanisms 29x, 29y of the vehicle wiper device 10. That is, the position of the driven shaft 23 can be changed in the same device, and different wiping area shapes of the wiper 11 can be set, so the same device can be used in common with multiple vehicle types.

[0027] (1-2) The position adjustment mechanism 29x is configured by an attachment method between an axle support plate 26 having a driven shaft 23 and a fixed bracket 25 fixed to the vehicle body. By changing the attachment position of the axle support plate 26 to the fixed bracket 25, the circumferential position of the driven shaft 23 on the drive shaft 22 can be easily set.

[0028] (1-3) The position adjustment mechanism 29y is configured by the mounting configuration between the driven shaft 23 and the shaft support plate 26. By changing the mounting position of the driven shaft 23 with respect to the shaft support plate 26, the radial position of the driven shaft 23 on the drive shaft 22 can be easily set.

[0029] (1-4) Between the shaft support plate 26 and the fixing bracket 25, a protrusion 26e and a recess 25e are provided as fitting portions that engage with each other. In addition to positioning the shaft support plate 26 by fitting using the protrusion 26e and the recess 25e, the shaft support plate 26 can be firmly fixed to the fixing bracket 25 in a state that prevents misalignment, and it is expected that the load-bearing capacity of the driven shaft 23 will be increased.

[0030] (1-5) Between the driven shaft 23 and the shaft support plate 26, a recessed portion 26g is provided as a fitting portion that engages with each other. In addition to positioning the driven shaft 23 by fitting using the recessed portion 26g, the driven shaft 23 can be firmly fixed to the shaft support plate 26 in a state that prevents misalignment, and it is expected that the load-bearing capacity of the driven shaft 23 will be increased.

[0031] (1-6) The shaft support plate 26 is provided with an elongated hole 26d that allows the mounting position of the shaft support plate 26 to be changed to any position relative to the fixed bracket 25. By using the elongated hole 26d, it is possible to easily change the mounting position of the shaft support plate 26 without making the shaft support plate 26 have an overly complex shape.

[0032] (1-7) The shaft support plate 26 is provided with an elongated hole 26f that allows the driven shaft 23 to be mounted to any position. By using the elongated hole 26f, the mounting position of the driven shaft 23 can be easily changed without making the shaft support plate 26 a complex shape.

[0033] (Second Embodiment) The following describes a second embodiment of a vehicle wiper device. (Vehicle wiper device 30) As shown in Figure 5, the vehicle wiper device 30 of this embodiment also wipes off deposits such as raindrops that adhere to the wiping surface Wsa of the front windshield WS of a vehicle. The vehicle wiper device 30 comprises a wiper 31 that performs a reciprocating wiping operation on the wiping surface Wsa, and a wiper drive device 41 that drives the reciprocating wiping of the wiper 31.

[0034] (Wiper 31) The wiper 31 of this embodiment includes a wiper arm 32 that swings back and forth about its base end, and a wiper blade 33 connected to the tip of the wiper arm 32.

[0035] The wiper arm 32 has the tip of the main lever 34 rotatably connected to its base end, and the tip of the sub-lever 35 rotatably connected to a portion of the wiper arm 32 slightly further towards the tip than the connection point with the main lever 34. The base end of the main lever 34 is connected to the drive shaft 22 of the wiper drive unit 41. The base end of the sub-lever 35 is connected to a driven shaft 23 integrally provided with the wiper drive unit 41. Part of the wiper arm 32, the main lever 34 and the sub-lever 35 are configured as a link mechanism 36 having connecting shafts aligned approximately perpendicular to the wiping surface WSa. A wiper blade 33 is connected to the tip of the wiper arm 32. The wiper blade 33 is positioned so that the blade rubber (not shown) is in contact with the wiping surface WSa.

[0036] When the main lever 34 is driven, the wiper arm 32 itself protrudes within a predetermined range in conjunction with the reciprocating oscillation of the wiper arm 32 due to the function of the link mechanism 36. As a result, the wiper blade 33 performs a complex wiping operation on the wiping surface Wsa, combining the basic arc motion with an additional motion in which it bulges outward in the middle of the arc motion. In other words, by combining the bulging motion of the wiper blade 33, it is possible to set the shape of the wiping area of ​​the wiper blade 33 to match the shape of the wiping surface Wsa for each vehicle model, for example, by bringing it as close as possible to the corners of the wiping surface Wsa during the wiping operation to expand the wiping area.

[0037] (Wiper drive device 41) As shown in Figure 6, the wiper drive device 41 of this embodiment differs slightly in shape from that of the first embodiment, but its functions are substantially the same. Therefore, in this embodiment, the same reference numerals are used for parts of the wiper drive device 41 that have the same functions as those of the first embodiment, and detailed descriptions are omitted.

[0038] The wiper drive unit 41 includes an electric wiper motor 24 having a drive shaft 22 for directly driving the main lever 34. The base end of the main lever 34 is integrally connected to the mounting portion 22a at the tip of the drive shaft 22. The wiper motor 24 is configured to have its drive shaft 22 reciprocatingly in order to cause the main lever 34 to swing back and forth. The wiper drive unit 41 also includes a fixing bracket 25 for fixing the wiper motor 24 to the vehicle body and a shaft support plate 26 having a driven shaft 23 for supporting the sub-lever 35.

[0039] The shaft support plate 26 of this embodiment differs significantly from that of the first embodiment in that the driven shaft 23 is fixed. In this embodiment, the circumferential position of the driven shaft 23 on the drive shaft 22 can be changed by the mounting position of the drive shaft 22 relative to the fixed bracket 25. In other words, in this embodiment as well, it is possible to easily set the shape of the wiping area of ​​the wiper 31 to a more suitable shape according to the shape of the wiping surface Wsa for each vehicle model.

[0040] (Effects of this embodiment) The effects of this embodiment will now be explained. (2-1) The vehicle wiper device 30 of this embodiment has a link mechanism 36 interposed between the wiper arm 32 and the drive shaft 22. The drive member and driven member constituting the link mechanism 36 correspond to the main lever 34 and the sub lever 35. In the drive shaft 22 that drives the main lever 34 and the driven shaft 23 that supports the sub lever 35, the circumferential position of the driven shaft 23 on the drive shaft 22 can be changed by the position adjustment mechanism 29x. That is, in this embodiment as well, the position of the driven shaft 23 can be changed in the same device, and it is possible to set the shape of the wiping area of ​​different wipers 31, so that the same device can be used in multiple vehicle types.

[0041] (2-2) In this embodiment as well, the same effects can be obtained with respect to the same configuration as in the first embodiment. (Third embodiment) The following describes a third embodiment of a vehicle wiper device.

[0042] (Vehicle wiper device 50) The vehicle wiper device 50 of this embodiment differs from that of the first embodiment in the configuration of the wiper drive device 51 shown in Figure 7, but the wiper 11 is the same as that of the first embodiment shown in Figure 1. Therefore, the wiper 11 of this embodiment is not shown and a detailed description is omitted. Similarly, the wiper drive device 51 of this embodiment is given the same reference numerals as that of the first embodiment and a detailed description is omitted.

[0043] (Wiper drive device 51) As shown in Figure 7, the wiper drive device 51 of this embodiment does not use direct drive by the wiper motor 24, but rather includes a rocking mechanism 52 that converts the rotational motion of the wiper motor 24 into a rocking motion. A wiper motor 24 with a unidirectional rotation specification can be used.

[0044] The wiper drive unit 51 includes a fixed base 55 formed by integrally connecting a pipe frame 53 and a shaft holder 54, which serves as a fixing member for fixing to the vehicle body. The fixed base 55 has vehicle body fixing portions 55a at appropriate locations on the pipe frame 53 and the shaft holder 54, and is fixed to the vehicle body by multiple vehicle body fixing portions 55a. A wiper motor 24 is fixed to the pipe frame 53. One end of a crank 56 is integrally connected to the tip of the output shaft 24a of the wiper motor 24. A drive shaft 22 is rotatably supported on the cylindrical portion 54a of the shaft holder 54, and one end of a swing lever 57 is integrally connected to the base end of the drive shaft 22. The other ends of the swing lever 57 and the crank 56 are connected to each other via a connecting link 58.

[0045] When the wiper motor 24 is driven, the crank 56 rotates in one direction together with the output shaft 24a. The rotation of the crank 56 in one direction causes the drive shaft 22 to reciprocate via the connecting link 58 and the oscillating lever 57. The operation of the drive shaft 22 in this embodiment is the same as that of the first embodiment described above.

[0046] The shaft holder 54 of this embodiment has a cylindrical portion 54a through which the drive shaft 22 is inserted and supported, as well as a vehicle body fixing portion 55a that is fixed to the vehicle body. The shaft holder 54 rotatably supports the drive shaft 22 and also supports the drive shaft 22 immovably relative to the vehicle body.

[0047] Furthermore, the shaft holder 54 has a mounting portion 54b on the outer circumferential surface of the cylindrical portion 54a, which is, for example, roughly flange-shaped. A shaft support plate 26 to which the driven shaft 23 is fixed is attached to the mounting portion 54b. The shaft support plate 26 in this embodiment is the same as in the second embodiment described above, so detailed illustration and description are omitted, but the circumferential position of the driven shaft 23 on the drive shaft 22 can be changed by the mounting position of the shaft holder 54 around the drive shaft 22 relative to the mounting portion 54b. In other words, in this embodiment as well, it is possible to easily set the shape of the wiping area of ​​the wiper 11 to a more suitable shape according to the shape of the wiping surface Wsa for each vehicle model.

[0048] (Effects of this embodiment) The effects of this embodiment will now be explained. (3-1) The vehicle wiper device 50 of this embodiment has a swing mechanism 52 interposed between the wiper motor 24 and the drive shaft 22. The same effects as those of the first and second embodiments can be obtained in the vehicle wiper device 50 of this embodiment as well.

[0049] (Example of change) Each of the above embodiments can be implemented with the following modifications. Each of the above embodiments and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0050] In the shaft support plate 26, the circumferential position of the driven shaft 23 around the drive shaft 22 and the radial position of the drive shaft 22 can each be changed by the position adjustment mechanisms 29x and 29y, but only one of them may be changed. As in the second and third embodiments described above, only the circumferential position of the driven shaft 23 around the drive shaft 22 may be changed, or only the radial position of the drive shaft 22 on the driven shaft 23 may be changed.

[0051] Although elongated holes 26d and 26f were used as the position adjustment mechanisms 29x and 29y, these may be modified as appropriate, such as by creating multiple holes for position adjustment in the shaft support plate 26. - While fitting portions are used between the shaft support plate 26 and the fixing bracket 25, and between the driven shaft 23 and the shaft support plate 26, either one or both may be used, or they may be omitted. If omitted, the shaft support plate 26 and the driven shaft 23 will be fixed only by fastening members, but a greater number of mounting position changes will be possible.

[0052] Although the driven shaft 23 and the shaft support plate 26 are fixed by fastening, they may also be fixed by crimping once the radial position is determined. In addition to the above examples of modifications, the configuration of the vehicle wiper devices 10, 30, and 50 may be modified as appropriate.

[0053] • As used in this disclosure, the phrase "at least one" means "one or more" of the desired options. For example, as used in this disclosure, if there are two options, the phrase "at least one" means either "only one option" or "both of the two options."

[0054] (Note) The technical concepts that can be understood from the above embodiments and modified examples are described below. [1] It is equipped with a linkage mechanism (17, 36) for causing the wiper (11, 31) to perform a complex wiping action that combines a basic arc motion with predetermined ancillary actions, The link mechanism is a vehicle wiper device (10, 30, 50) comprising a drive member (14, 34) integrally connected to a drive shaft (22) driven based on the drive of a wiper motor (24), and a driven member (15, 35) supported by a driven shaft (23) positioned relative to the drive shaft and moving in accordance with the operation of the drive member, The driven shaft is integrally provided with the shaft support member (26), and the shaft support member is fixed to the fixing members (25, 55) for fixing the vehicle wiper device to the vehicle body. The vehicle wiper device is equipped with a position adjustment mechanism (29x, 29y) that allows at least one of the circumferential position and radial position of the driven shaft on the drive shaft to be changed.

[0055] [2] The circumferential position of the driven shaft on the drive shaft can be changed, The vehicle wiper device according to [1] above, wherein the position adjustment mechanism (29x) is configured in an attachment manner between the shaft support member and the fixing member.

[0056] [3] The radial position of the driven shaft on the drive shaft can be changed, The vehicle wiper device according to [1] or [2] above, wherein the position adjustment mechanism (29y) is configured by an attachment configuration between the driven shaft and the shaft support member.

[0057] [4] The vehicle wiper device according to [2] or "3" above, wherein the position adjustment mechanism (29x, 29y) is provided with fitting portions (25e, 26e, 26g) that fit together between the shaft support member and the fixed member, or between the driven shaft and the shaft support member, and is configured to be able to fit together at a plurality of arbitrary positions.

[0058] [5] The vehicle wiper device according to any one of the above [2] to [4], wherein the position adjustment mechanism (29x, 29y) is configured using elongated holes (26d, 26f) that allow the mounting to be changed to any position between the shaft support member and the fixed member, or between the driven shaft and the shaft support member. [Explanation of symbols]

[0059] 10 Vehicle wiper device, 11 Wiper, 14 Main arm (driver), 15 Sub-arm (driven), 17 Link mechanism, 22 Drive shaft, 23 Drive shaft, 24 Wiper motor, 25 Fixing bracket (fixing member), 26 Shaft support plate (shaft support member), 29x, 29y Position adjustment mechanism, 30 Vehicle wiper device, 31 Wiper, 34 Main lever (driver), 35 Sub-lever (driven), 36 Link mechanism, 50 Vehicle wiper device, 55 Fixing base (fixing member)

Claims

1. The system includes a linkage mechanism (17, 36) for causing the wipers (11, 31) to perform a complex wiping action that combines a basic arc motion with predetermined ancillary actions. The link mechanism is a vehicle wiper device (10, 30, 50) comprising: drive members (14, 34) integrally connected to a drive shaft (22) driven based on the drive of a wiper motor (24); and driven members (15, 35) supported by a driven shaft (23) positioned relative to the drive shaft and moving in accordance with the operation of the drive members, The driven shaft is integrally provided with the shaft support member (26), and the shaft support member is fixed to the fixing members (25, 55) for fixing the vehicle wiper device to the vehicle body. The vehicle wiper device is equipped with a position adjustment mechanism (29x, 29y) that allows at least one of the circumferential position and radial position of the driven shaft on the drive shaft to be changed.

2. The circumferential position of the driven shaft on the drive shaft can be changed, The vehicle wiper device according to claim 1, wherein the position adjustment mechanism (29x) is configured in an attachment manner between the shaft support member and the fixing member.

3. The radial position of the driven shaft on the drive shaft can be changed, The vehicle wiper device according to claim 1, wherein the position adjustment mechanism (29y) is configured in a manner of mounting between the driven shaft and the shaft support member.

4. The vehicle wiper device according to claim 2 or 3, wherein the position adjustment mechanism (29x, 29y) is provided with fitting portions (25e, 26e, 26g) that fit together between the shaft support member and the fixed member, or between the driven shaft and the shaft support member, and is configured to be able to fit together at a plurality of arbitrary positions.

5. The vehicle wiper device according to claim 2 or 3, wherein the position adjustment mechanism (29x, 29y) is configured using elongated holes (26d, 26f) that allow the mounting to be changed to any position between the shaft support member and the fixed member, or between the driven shaft and the shaft support member.

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