JP2018193041A - Wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper device capable of draining water into a relatively large space where various members do not exist nearby. SOLUTION: A pair of drainage ports 43f are provided between an arc-shaped wall portion 43d and a flat plate-shaped wall portion 43e to discharge rainwater flowing into an AS side umbrella portion 43c in a direction intersecting a line segment LN. Therefore, the drainage direction of rainwater can be bent. Therefore, it is possible to drain the water into a relatively large space where various members are not present nearby, and thus the reliability can be improved. [Selection diagram] FIG. 11

Description

  The present invention relates to a wiper device that swings a wiper member.

  A vehicle such as an automobile is equipped with a wiper device that wipes rainwater and the like attached to a windshield to ensure a good field of view. The wiper device includes a wiper motor, a link mechanism that converts the rotational motion of the wiper motor into a swing motion, a pivot shaft that is swung by the link mechanism, and a holder member that is fixed to the vehicle and rotatably supports the pivot shaft. And a wiper member provided at the tip of the pivot shaft.

  The wiper device is accommodated, for example, in a cowl top panel at the front end portion of the front windshield, and is covered with a cowl top cover. The cowl top cover is provided with a pivot hole through which the pivot shaft is inserted, and the tip of the pivot shaft is exposed to the outside from the pivot hole. Then, the wiper motor is driven by the operation of the operation switch, and the wiper member is swung on the front windshield.

  As such a wiper apparatus, for example, there is a technique described in Patent Document 1. In the wiper device described in Patent Document 1, the ball joint of the link mechanism is disposed on the proximal end side of the pivot shaft. The pivot holder (holder member) is provided with a pivot cover (cover) so that rainwater or the like is not applied to the ball joint.

  As a result, rainwater or the like that has flowed into the cowl top panel from the pivot hole of the cowl top cover flows down to a portion avoiding the ball joint. Accordingly, it is possible to prevent rainwater or the like from being applied to the ball joint, and consequently, increase in operating resistance or occurrence of abnormal noise due to grease breakage of the ball joint can be effectively suppressed.

JP 2013-230711 A

  However, in the wiper device described in Patent Document 1 described above, a plurality of drain holes are provided in the wall portion of the pivot cover, and rainwater and the like are discharged from the drain holes toward the engine room (front of the vehicle). . Therefore, rainwater or the like may be scattered on various members arranged in front of the wiper device, that is, on the wall surface of the cowl top panel, engine auxiliary machinery, or the like. For example, when rainwater or the like scatters on the wall surface of the cowl top panel, there is a risk that the rainwater or the like will rebound to the ball joint of the wiper device.

  An object of the present invention is to provide a wiper device that can drain water into a relatively large space where there are no various members nearby.

  In one aspect of the present invention, there is provided a wiper device that swings a wiper member, wherein the wiper member is provided at a distal end thereof, and a swing shaft that is provided at a proximal end of the pivot shaft and swings the pivot shaft. A member, a holder member that rotatably supports the pivot shaft, and a cover that covers the holder member, wherein the cover extends in a direction intersecting the axial direction of the pivot shaft, and the umbrella A first wall portion disposed on one side of the umbrella portion around the pivot shaft, and protruding from the umbrella portion in the axial direction of the pivot shaft. A second wall portion disposed on the other side of the umbrella portion around an axis; and a fluid that is provided between the first wall portion and the second wall portion and flows into the umbrella portion. Intersects with a line segment connecting one side of the umbrella and the other side of the umbrella Includes a drainage portion for discharging the direction, the.

  In another aspect of the present invention, the first wall portion is formed in an arc shape that is recessed on the side opposite to the second wall portion side along the extending direction of the line segment, and the second wall portion is It is formed in a flat plate shape extending in a direction intersecting with the line segment.

  In another aspect of the present invention, a rib protruding from the back surface and extending in a direction intersecting the line segment is provided on the back surface of the second wall portion opposite to the pivot shaft side.

  In another aspect of the present invention, the rib projects from the back surface in a direction substantially parallel to the pivot shaft.

  In another aspect of the present invention, an inclined wall for guiding the fluid to the drainage portion is provided on a surface of the second wall portion on the pivot shaft side.

  In another aspect of the present invention, the cover is provided in a substantially central portion along the vehicle width direction of the vehicle, and a direction intersecting a line segment connecting one side of the umbrella portion and the other side of the umbrella portion is The vehicle width direction.

  In another aspect of the present invention, a guide wall for guiding the discharge direction of the fluid in a predetermined direction is provided around the drainage portion.

  In another aspect of the present invention, the drainage unit is disposed below the pivot shaft in a state where the wiper device is fixed to a fixed object.

  In another aspect of the present invention, the second wall portion overlaps a vehicle body panel in a direction in which the fluid flows.

  According to the present invention, the fluid that has flowed into the umbrella portion between the first wall portion and the second wall portion is discharged in a direction that intersects a line segment that connects one side of the umbrella portion and the other side of the umbrella portion. Since the drainage part to be made is provided, the drainage direction of the fluid can be bent. Therefore, it becomes possible to drain into a relatively large space where there are no various members nearby, and as a result, reliability can be improved.

It is a schematic diagram showing a vehicle carrying a wiper device according to the present invention. It is a perspective view which expands and shows the wiper apparatus of FIG. It is an expansion perspective view explaining the peripheral structure of DR side pivot shaft. It is sectional drawing which follows the AA line of FIG. (A), (b) is a perspective view explaining the detailed structure of DR side holder cover. It is an expansion perspective view of the broken-line circle | round | yen B part of FIG. It is sectional drawing which follows the CC line of FIG. (A), (b) is sectional drawing corresponding to FIG. 7 which shows the modification of a latching structure. It is an expansion perspective view explaining the peripheral structure of an AS side pivot shaft. It is sectional drawing which follows the DD line | wire of FIG. (A), (b) is a perspective view explaining the detailed structure of AS side holder cover. It is sectional drawing explaining the state of the rain water which flows into an AS side holder cover. It is a perspective view explaining the state of the rain water which flows into an AS side holder cover.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic view showing a vehicle equipped with a wiper device according to the present invention, and FIG. 2 is an enlarged perspective view showing the wiper device of FIG.

  As shown in FIG. 1, a front windshield 11 is provided on the front side of the vehicle 10. On the front windshield 11, there are a DR side (driver's seat side) wiper member 12 and an AS side (passenger side) wiper member 13 for wiping rainwater (not shown) attached to the front windshield 11 and the like. Is provided.

  The DR-side wiper member 12 includes a DR-side wiper blade 12a and a DR-side wiper arm 12b. The DR-side wiper blade 12a is rotatably provided at the tip of the DR-side wiper arm 12b. The AS-side wiper member 13 includes an AS-side wiper blade 13a and an AS-side wiper arm 13b. The AS-side wiper blade 13a is rotatably provided at the tip of the AS-side wiper arm 13b. The wiper blades 12a and 13a are elastically contacted with the front windshield 11 by coil springs (not shown) provided inside the wiper arms 12b and 13b.

  The pair of wiper blades 12a and 13a has a wiping range 11a and 11b (a fan-shaped range of a two-dot chain line in the figure) formed between the lower inversion position LRP and the upper inversion position URP on the front windshield 11, respectively. Synchronously, the reciprocating wiping operation is performed in the same direction. That is, the wiping pattern of the pair of wiper members 12 and 13 is a so-called tandem wiping pattern.

  A wiper device 20 that swings the pair of wiper members 12 and 13 is provided on the front side (lower side in the figure) of the front windshield 11. By driving the wiper device 20, the pair of wiper members 12 and 13 perform a reciprocating wiping operation on the front windshield 11.

  The wiper device 20 is housed in a cowl top panel 14 (not shown in detail) provided in front of the front windshield 11 of the vehicle 10. And the opening part (front side in the figure) of the cowl top panel 14 prevents the wiper device 20 from being wetted, and covers the wiper device 20 so as to improve the appearance from the outside. (Not shown in detail).

  The cowl top cover 15 is provided with a DR side pivot hole 15a and an AS side pivot hole 15b. The DR side pivot hole 15a is disposed on the DR side (left side in the figure) along the vehicle width direction, and the AS side pivot hole 15b is disposed at a substantially central portion along the vehicle width direction. From these pivot holes 15a and 15b, the tip side of the DR side pivot shaft 25a and the AS side pivot shaft 25b of the wiper device 20 is exposed. The wiper arms 12b and 13b are fixed to the ends of the pivot shafts 25a and 25b, respectively.

  The wiper device 20 includes a wiper motor 21 that is rotationally driven at a predetermined rotational speed by operating an operation switch (not shown) provided in a vehicle interior or the like. The wiper motor 21 includes an electric motor 22 and a gear case 23, and an armature shaft (not shown) having a worm provided on the tip side is rotatably accommodated in the electric motor 22. The electric motor 22 may be a brushed electric motor or a brushless electric motor.

  A worm wheel (not shown) that meshes with the worm of the armature shaft is rotatably accommodated in the gear case 23. The worm and worm wheel constitute a speed reduction mechanism (worm speed reducer). The speed reduction mechanism decelerates the rotation of the armature shaft to a predetermined rotational speed, and this reduced speed and increased torque is transmitted from an output shaft (not shown) provided on the worm wheel to the outside (link mechanism 24). Is output.

  As shown in FIG. 2, the wiper device 20 includes a link mechanism 24 that converts the rotational motion of the wiper motor 21 into a swing motion. The link mechanism 24 is provided between the output shaft of the wiper motor 21 and the pair of pivot shafts 25a and 25b. More specifically, the link mechanism 24 includes a crank arm 24a, a drive rod 24b, a DR side drive lever 24c, a connecting rod 24d, and an AS side drive lever 24e from the wiper motor 21 side.

  One end of the crank arm 24 a is fixed to the output shaft of the wiper motor 21. The other end of the crank arm 24a is rotatably connected to one end of the drive rod 24b via a ball joint BJ1. One end of the DR side drive lever 24c is fixed to the base end (lower side in the figure) of the DR side pivot shaft 25a. The other end of the DR side drive lever 24c is rotatably connected to the other end of the drive rod 24b via a ball joint BJ2.

  One end of the AS side drive lever 24e is fixed to the base end of the AS side pivot shaft 25b. The other end of the AS side drive lever 24e is rotatably connected to one end of the connecting rod 24d via a ball joint BJ3. The other end of the connecting rod 24d is rotatably connected to the other end of the DR side drive lever 24c via a ball joint BJ4.

  Thereby, by rotating the wiper motor 21, the pair of pivot shafts 25a and 25b can be synchronized and swung in the same direction. As described above, the link mechanism 24 converts the rotational motion of the output shaft of the wiper motor 21 into the swing motion of the pair of pivot shafts 25a and 25b.

  Here, the wiper motor 21 and the link mechanism 24 are provided at the base ends of the pair of pivot shafts 25a and 25b, and swing the pair of pivot shafts 25a and 25b. Therefore, the wiper motor 21 and the link mechanism 24 constitute a swing member in the present invention.

  As shown in FIG. 2, the wiper device 20 includes a DR-side pivot holder 30 and an AS-side pivot holder 40 that are formed into a predetermined shape by casting a metal material such as an aluminum material. . The pivot holders 30 and 40 are integrated with each other by a frame member 50 made of a hollow pipe. That is, the wiper device 20 is a so-called frame-integrated “modular type wiper device”. The wiper motor 21 is fixed to a substantially central portion along the longitudinal direction of the frame member 50.

  3 is an enlarged perspective view illustrating the peripheral structure of the DR side pivot shaft, FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, and FIGS. 5A and 5B are details of the DR side holder cover. 6 is a perspective view illustrating the structure, FIG. 6 is an enlarged perspective view of a broken-line circle B portion of FIG. 3, FIG. 7 is a cross-sectional view taken along the line CC of FIG. 6, and FIGS. Sectional drawing corresponding to FIG. 7 which shows the modification of a latching structure is each shown.

  As shown in FIG. 3, the DR-side pivot holder 30 is formed in a substantially cylindrical shape, and supports the DR-side pivot shaft 25a so as to be rotatable. Specifically, as shown in FIG. 4, a pair of bearings 31 (only one is shown in the figure) is mounted on the radially inner side of the DR side pivot holder 30 and on both axial sides. These bearings 31 rotatably support both axial sides of the DR side pivot shaft 25a. Therefore, the DR side pivot shaft 25 a can smoothly rotate with respect to the DR side pivot holder 30.

  In the vicinity of the pair of bearings 31, a seal member 32 (only one is shown in the figure) made of rubber or the like is provided. This prevents rainwater or the like from entering the DR side pivot holder 30.

  The DR side pivot holder 30 is fitted with a DR side holder cover 33 formed in a predetermined shape from a resin material such as plastic. Specifically, the DR side pivot holder 30 is provided with a DR side mounting cylinder portion 33a of the DR side holder cover 33 so as to cover the periphery thereof. Note that the DR-side mounting cylinder portion 33a is fixed so as not to move with respect to both the axial direction and the circumferential direction of the DR-side pivot holder 30.

  A pair of DR side cover fixing convex portions 30 a are integrally provided around the DR side pivot holder 30. These DR-side cover fixing convex portions 30 a protrude at a predetermined height outward in the radial direction of the DR-side pivot holder 30 and extend in the axial direction of the DR-side pivot holder 30. Further, the pair of DR-side cover fixing convex portions 30 a are provided at equal intervals (180-degree intervals) in the circumferential direction of the DR-side pivot holder 30. That is, the pair of DR-side cover fixing convex portions 30a are disposed so as to face each other about the DR-side pivot shaft 25a. In FIG. 4, a one-dot chain line is shown at the boundary between the DR side pivot holder 30 and the DR side cover fixing convex portion 30a.

  And these DR side cover fixing convex parts 30a have penetrated into a pair of DR side cover fixing recessed part 33b provided in the radial inside of DR side attachment cylinder part 33a. Thereby, the DR side holder cover 33 is prevented from rotating with respect to the DR side pivot holder 30. In addition, a part of the DR side mounting cylinder portion 33a on the axial front end side (upper side in FIG. 4) is supported by a washer 34 and a pair of DR side cover fixing convex portions 30a. Thereby, the movement of the DR side holder cover 33 in the axial direction with respect to the DR side pivot holder 30 is restricted.

  Here, the outer diameter dimension of the washer 34 is larger than the outer diameter dimension of the distal end portion of the DR side pivot holder 30 and is prevented from being detached by a toothed retaining ring (tea washer) 35. Both the washer 34 and the toothed retaining ring 35 are inexpensive general-purpose products that are generally distributed.

  3 and 6, the DR side pivot holder 30 is integrally provided with a DR side fixing arm 30b for fixing the DR side pivot holder 30 to the vehicle 10 (see FIG. 1). . The DR side fixed arm 30 b extends in a direction intersecting with the axial direction of the DR side pivot holder 30. The longitudinal base end of the DR side fixed arm 30b is coupled to the DR side pivot holder 30, and a notch 30c is provided at the longitudinal end of the DR side fixed arm 30b. A DR-side bush 36 made of rubber or the like is attached from the opening OP of the notch 30c.

  Here, the DR-side bush 36 is provided between the DR-side fixed arm 30b (DR-side pivot holder 30) and the vehicle 10, and prevents the vibration of the wiper device 20 from being transmitted to the vehicle 10 to prevent the vehicle interior. Improves quietness. Furthermore, it is possible to prevent the vibration of the vehicle 10 from being transmitted to the wiper device 20, and thus it is possible to effectively prevent the wiper device 20 from being damaged by the vibration of the vehicle 10.

  Further, the DR-side pivot holder 30 includes a DR-side frame fixing portion 30d that is inserted into one end of the frame member 50 (see FIG. 2) and one end of the frame member 50 is fixed by caulking. The DR side frame fixing portion 30d is disposed on the opposite side of the DR side fixing arm 30b with the DR side pivot holder 30 as the center. As a result, the DR side pivot holder 30 is supported in a substantially balanced manner between the DR side fixed arm 30b and the DR side frame fixing portion 30d, and the DR side pivot holder 30 when the DR side pivot shaft 25a swings. Can be effectively suppressed.

  As shown in FIGS. 6 and 7, the DR-side bush 36 attached to the notch 30c includes a body part 36a formed in a cylindrical shape. A cylindrical collar member 36b made of a steel plate is mounted on the radially inner side of the body portion 36a. This prevents a decrease in function or damage of the DR-side bush 36 due to excessive tightening of the fixing bolt BL. The fixing bolt BL is inserted through the collar member 36 b and fixes the DR side bush 36 to the vehicle 10.

  A first annular portion 36c having an outer diameter larger than the outer diameter of the body portion 36a is integrally provided on one side in the axial direction of the body portion 36a. A second annular portion 36d having an outer diameter larger than the outer diameter of the body portion 36a is integrally provided on the other axial side of the body portion 36a. Here, the outer diameter dimension of the second annular portion 36d is larger than the outer diameter dimension of the first annular portion 36c. As a result, the second annular portion 36d can be elastically deformed flexibly between the DR-side fixed arm 30b and the vehicle 10 (see FIG. 1), and can exhibit a sufficient vibration absorbing function.

  On the other hand, the first annular portion 36c has a smaller diameter than the second annular portion 36d, but the removal strength of the DR-side bush 36 from the cutout portion 30c is sufficiently ensured. In other words, the second annular portion 36d is a portion that mainly exhibits a vibration absorbing function, and the first annular portion 36c is a portion that mainly secures the removal strength from the notch portion 30c of the DR side bush 36. It has become.

  A washer WS having an outer diameter substantially the same as the outer diameter of the second annular portion 36d is interposed between the head HD of the fixing bolt BL and the first annular portion 36c. The washer WS prevents the first annular portion 36c from being damaged by the corners of the head HD when the fixing bolt BL is tightened, and also prevents the first annular portion 36c from being damaged when the wiper device 20 is operated. It has a function to prevent a large load from being concentrated on the part. In other words, the washer WS has a function of protecting the first annular portion 36c.

  Further, as shown in FIG. 7, the axial length of the body portion 36a is substantially the same as the thickness of the DR-side fixed arm 30b. Thereby, the DR side bush 36 does not rattle in the axial direction with respect to the DR side fixed arm 30b.

  As shown in FIGS. 3 to 7, the DR-side holder cover 33 includes a DR-side mounting cylinder portion 33a that covers the periphery of the DR-side pivot holder 30, and on the radially inner side of the DR-side mounting cylinder portion 33a, A pair of DR side cover fixing recesses 33b (see FIG. 5B) is provided. These DR-side cover fixing recesses 33b are recessed outward in the radial direction of the DR-side mounting cylinder part 33a, and are provided at equal intervals (180-degree intervals) in the circumferential direction of the DR-side mounting cylinder part 33a. . And a pair of DR side cover fixing convex part 30a (refer FIG. 4) provided in the circumference | surroundings of DR side pivot holder 30 has entered into a pair of DR side cover fixing recessed part 33b.

  A DR-side umbrella portion 33c that radially spreads around the DR-side attachment tube portion 33a is integrally provided on the base end side in the axial direction (lower side in FIG. 3) of the DR-side attachment tube portion 33a. The DR-side umbrella portion 33c extends in a direction intersecting the axial direction of the DR-side mounting cylinder portion 33a so as to receive the rainwater W flowing from the DR-side pivot hole 15a at the tip end side in the axial direction of the DR-side pivot shaft 25a. It has become. Here, the size of the DR-side umbrella portion 33c is such that when the DR-side pivot holder 30 is viewed from the axial front end side (the upper side in FIG. 3), the DR-side pivot holder 30 as well as the DR-side fixed arm. The size is set to cover 30b.

  Around the DR side umbrella portion 33c, a first wall portion 33d is continuously provided so as to protrude toward the DR side mounting cylinder portion 33a of the DR side umbrella portion 33c. The height dimension of the first wall portion 33d is set high at a portion close to the DR side pivot hole 15a, and is set low at a portion away from the DR side pivot hole 15a. Thereby, it is possible to effectively suppress the rainwater W that has flowed from the DR-side pivot hole 15a to the DR-side umbrella portion 33c and bounced off at the DR-side umbrella portion 33c and leaks to the outside.

  Even if the height of the first wall portion 33d in the part away from the DR side pivot hole 15a is lowered, the momentum of the rainwater W reaching there is sufficiently weakened. There is almost no leakage. Therefore, as described above, the height is optimally set according to the portion of the first wall portion 33d, thereby preventing the DR-side holder cover 33 from becoming unnecessarily large.

  The first wall portion 33d is not provided in a part of the periphery of the DR side umbrella portion 33c, and the DR side umbrella portion 33c is opposite to the DR side mounting tube portion 33a side (DR side). An inclined wall 33e that protrudes toward the drive lever 24c) and is inclined at a predetermined angle is provided. The inclined wall 33e extends in the vehicle width direction and is disposed on the vehicle front side in a state where the wiper device 20 is mounted on the vehicle 10 (see FIG. 1).

  Thereby, the rain water W which flowed into DR side umbrella part 33c can be discharged | emitted smoothly outside the vehicle front side. Further, the rainwater W discharged from the DR side umbrella portion 33c travels along the back surface of the DR side umbrella portion 33c (the surface opposite to the DR side mounting cylinder portion 33a side of the DR side umbrella portion 33c), and the DR side pivot shaft. Prevents flow toward 25a. In the state where the wiper device 20 is mounted on the vehicle 10, the inclined wall 33e is disposed at a position away from the DR-side pivot holder 30 toward the vehicle front side, so that the connecting portion of the link mechanism 24 (ball joints BJ2, BJ4) It is suppressed that rainwater W is splashed on (subject to).

  The DR side umbrella part 33c is set to a size that covers the DR side fixed arm 30b. Therefore, the second wall portion 33f is integrally provided on the DR side fixed arm 30b side (left side in FIG. 3) of the DR side mounting cylinder portion 33a in the DR side umbrella portion 33c. The second wall portion 33f is disposed in the vicinity of the DR side pivot hole 15a, and the height dimension thereof is substantially the same as the height dimension of the first wall portion 33d disposed in the vicinity of the DR side pivot hole 15a. ing. Thereby, the rebound of the rain water W which flowed into DR side umbrella part 33c is suppressed, and the rain water W is efficiently guide | induced toward the inclined wall 33e.

  The DR-side umbrella portion 33c is provided with an insertion hole 33g through which the first annular portion 36c (see FIG. 7) of the DR-side bush 36 is inserted. More specifically, the insertion hole 33g is provided penetrating in the plate thickness direction of the DR side umbrella portion 33c, and is disposed at a position farther from the DR side mounting cylinder portion 33a than the second wall portion 33f. The insertion hole 33g includes a cylindrical portion 33h extending in the axial direction of the DR-side bush 36, and an inner wall 33k is provided on the radially inner side.

  Moreover, one latching claw 33m is provided on the inner wall 33k of the insertion hole 33g. Here, when a slight backlash in the rotational direction of the DR side pivot shaft 25a occurs between the DR side cover fixing convex portion 30a and the DR side cover fixing concave portion 33b (see FIG. 4), the DR side pivot shaft The deviation due to the play becomes larger as it becomes radially outward of 25a. However, the latching claw 33m is provided so as to protrude radially inward from the inner wall 33k, and is disposed at a position farthest from the DR side pivot shaft 25a of the inner wall 33k. The holder cover 33 can be fixed to the DR side pivot holder 30 to enhance the anti-rotation effect on the DR side pivot shaft 25a. Specifically, as shown in FIG. 3, the separation distance between the latching claw 33m and the DR-side pivot shaft 25a is L. The separation distance L is equal to approximately half the length of the DR side pivot shaft 25a.

  Further, as shown in FIG. 6, the latching claw 33 m is formed on the notch portion 30 c provided at the distal end in the longitudinal direction of the DR side fixed arm 30 b in a state where the DR side holder cover 33 is attached to the DR side pivot holder 30. It arrange | positions in the part of opening OP. And the latching claw 33m is latched by the 1st annular part 36c of DR side bush 36 in the part of opening OP, as FIG.6 and FIG.7 shows. Specifically, the latching claw 33m is provided with a contact surface 33n that contacts the first annular portion 36c from the axial direction of the insertion hole 33g, and the contact surface 33n is hooked on the first annular portion 36c. It has been.

  Thus, since the latching claw 33m is latched so as to bite into the first annular portion 36c, which is an elastic body, the effect of preventing rotation of the DR side holder cover 33 with respect to the DR side pivot shaft 25a can be enhanced. Moreover, the notch part 30c provided in order to mount | wear with the DR side bush 36 is utilized as an arrangement | positioning location of the latching claw 33m. Thereby, it is not necessary to prepare a dedicated DR side pivot holder for mounting the DR side holder cover 33. Therefore, versatility can be improved by using the DR side holder cover 33. Furthermore, since the notch portion 30c is formed larger than the latching claw 33m, a manufacturing error of the latching claw 33m is absorbed, and the assembly is also simplified.

  A guide slope 33p is provided on the side opposite to the contact surface 33n side of the latching claw 33m along the axial direction of the insertion hole 33g. The guide slope 33p has a function of guiding the latching operation of the latching claw 33m to the first annular portion 36c when the DR-side holder cover 33 is attached to the DR-side pivot holder 30. That is, when the DR side holder cover 33 is attached to the DR side pivot holder 30 from above in FIG. 7, the outer peripheral portion of the first annular portion 36c comes into sliding contact with the surface of the guide slope 33p while being elastically deformed. Yes.

  Thereby, the DR side holder cover 33 can be easily mounted on the DR side pivot holder 30 while being restricted by the mounting operation of inserting the DR side pivot shaft 25a into the DR side mounting cylinder portion 33a. Specifically, the cylindrical portion 33h forming the insertion hole 33g is also slightly elastically deformed, and the latching claw 33m can easily get over the first annular portion 36c. Thereafter, the contact surface 33n of the latching claw 33m contacts the first annular portion 36c from the axial direction, and the latching operation of the latching claw 33m with respect to the first annular portion 36c is completed.

  Here, the outer diameter D2 of the first annular portion 36c is smaller than the inner diameter D1 of the insertion hole 33g (D2 <D1), and a relatively large annular space SP is formed therebetween. . Accordingly, the first annular portion 36c of the DR-side bush 36 can be easily inserted into the insertion hole 33g, and the latching claw 33m can be latched to the first annular portion 36c by looking into the annular space SP. The state can be easily grasped. That is, by providing the annular space SP, the mounting work of the DR side holder cover 33 to the DR side pivot holder 30 is facilitated.

  The outer diameter of the washer WS is set to be substantially the same as the outer diameter of the second annular portion 36d, and is set to the same outer diameter as the inner diameter D1 of the insertion hole 33g. Therefore, the washer WS cannot pass through the insertion hole 33g, but is provided so as to close the annular space SP. Therefore, dust or the like is prevented from accumulating in the annular space SP.

  Here, the fixing bolt BL and the washer WS are attached to the DR-side pivot holder 30 with the DR-side holder cover 33 and the hooking claw 33m is hooked to the first annular portion 36c, and the wiper device 20 is mounted on the vehicle. 10 is mounted on the DR-side bush 36 as shown in FIG.

  Moreover, since the latching claw 33m protrudes radially inward from the inner wall 33k of the insertion hole 33g, for example, when the wiper device 20 is mounted on the vehicle 10, an operator or the like contacts the latching claw 33m. This is surely prevented. Therefore, the DR-side holder cover 33 does not easily come off from the DR-side pivot holder 30 and thus improves the mountability of the wiper device 20 on the vehicle 10.

  Further, as shown in FIG. 5 (b), the DR side fixed arm 30b (see FIG. 7) is provided on the opposite side of the DR side umbrella portion 33c from the DR side mounting cylinder portion 33a side and in the vicinity of the insertion hole 33g. ) Is provided with a pair of pressing surfaces 33q that are in contact with the longitudinal tips. As shown in FIG. 7, these pressing surfaces 33q are pressed against the longitudinal ends of the DR side fixed arms 30b in a state where the hooking claws 33m are hooked on the first annular portion 36c. That is, the pair of pressing surfaces 33q press the DR side fixed arm 30b from the axial direction of the insertion hole 33g.

  That is, as shown by the broken line arrow in FIG. 7, the latching direction DR1 of the latching claw 33m and the pressing direction DR2 of the pair of pressing surfaces 33q are opposite to each other. Specifically, the latching direction DR1 of the latching claw 33m is on the first annular portion 36c side (upper side in the drawing) along the axial direction of the insertion hole 33g, and the pressing direction DR2 of the pair of pressing surfaces 33q is the insertion hole. It is on the DR side fixed arm 30b side (lower side in the figure) along the 33g axial direction.

  Thereby, the part with the insertion hole 33g of the DR side holder cover 33 is fixed between the first annular part 36c of the DR side bush 36 and the DR side fixed arm 30b without rattling. Therefore, it is possible to effectively suppress the portion where the insertion hole 33g of the DR-side holder cover 33 is provided as shown by the arrow SW.

  Here, the latching structure of the latching claw 33m can be configured as shown in the modified examples of FIGS. 8 (a) and 8 (b), the shape and position of the latching claw are different, but since they have the same function as the latching claw 33m shown in FIG.

  In the modification of FIG. 8A, the latching claw 33m is hooked on the washer WS (D1> D2) having an outer diameter D1 larger than the outer diameter D2 of the first annular portion 36c. In this case, since the position of the latching claw 33m can be arranged near the head HD of the fixing bolt BL, the latched state of the latching claw 33m can be more easily seen. Moreover, since the latching claw 33m is latched by the washer WS made of steel, “blurring” of the DR side holder cover 33 with respect to the DR side pivot holder 30 can be more effectively suppressed.

  In the modification of FIG. 8B, the washer WS is abolished and the head having an outer diameter D1 larger than the outer diameter D2 of the first annular portion 36c, as compared with the modification of FIG. 8A. The latching claw 33m is hooked on the fixing bolt BL (D1> D2) provided with HD1. In this case, in addition to the same effects as the modification of FIG. 8A, the washer WS can be eliminated, so that the number of parts can be reduced.

  In addition, you may arrange | position the latching claw 33m between the washer WS and the fixing bolt BL, and the 1st annular part 36c. In this case, the latching claw 33m is pressed against the first annular portion 36c by the washer WS or the fixing bolt BL, and the latching claw 33m can be more securely latched, and a manufacturing error of the latching claw 33m is absorbed by the first annular portion 36c. Effect is also obtained.

  9 is an enlarged perspective view for explaining the peripheral structure of the AS-side pivot shaft, FIG. 10 is a cross-sectional view taken along line DD of FIG. 9, and FIGS. 11A and 11B are details of the AS-side holder cover. 12 is a perspective view for explaining the structure, FIG. 12 is a sectional view for explaining the state of rainwater flowing into the AS side holder cover, and FIG. 13 is a perspective view for explaining the state of rainwater flowing into the AS side holder cover.

  As shown in FIG. 9, the AS side pivot holder 40 is formed in a substantially cylindrical shape, and supports the AS side pivot shaft 25b so as to be rotatable. Specifically, as shown in FIG. 10, a pair of bearings 41 (only one is shown in the figure) is mounted on the radially inner side and both axial sides of the AS side pivot holder 40. These bearings 41 rotatably support both axial sides of the AS side pivot shaft 25b. Therefore, the AS side pivot shaft 25 b can smoothly rotate with respect to the AS side pivot holder 40.

  In the vicinity of the pair of bearings 41, seal members 42 (only one is shown in the figure) made of rubber or the like are provided. This prevents rainwater or the like from entering the AS side pivot holder 40.

  Here, the AS side pivot shaft 25b constitutes a pivot shaft in the present invention, and the AS side pivot holder 40 constitutes a holder member in the present invention.

  The AS side pivot holder 40 is provided with an AS side holder cover 43 formed in a predetermined shape from a resin material such as plastic. Specifically, the AS side pivot holder 40 is provided with an AS side mounting cylinder 43a of the AS side holder cover 43 so as to cover the periphery thereof. The AS-side mounting cylinder 43a is fixed so as not to move in both the axial direction and the circumferential direction of the AS-side pivot holder 40.

  Here, the AS side holder cover 43 constitutes a cover in the present invention.

  A pair of AS side cover fixing convex portions 40 a are integrally provided around the AS side pivot holder 40. These AS-side cover fixing projections 40 a protrude at a predetermined height outward in the radial direction of the AS-side pivot holder 40 and extend in the axial direction of the AS-side pivot holder 40. Further, the pair of AS side cover fixing convex portions 40 a are provided at equal intervals (180 degree intervals) in the circumferential direction of the AS side pivot holder 40. That is, the pair of AS-side cover fixing convex portions 40a are disposed to face each other with the AS-side pivot shaft 25b as the center. In FIG. 10, a one-dot chain line is shown at the boundary between the AS side pivot holder 40 and the AS side cover fixing convex portion 40a.

  And these AS side cover fixing convex parts 40a have penetrated into a pair of AS side cover fixing recessed part 43b provided in the radial inside of AS side attachment cylinder part 43a. Thereby, the AS side holder cover 43 is prevented from rotating with respect to the AS side pivot holder 40. Further, a part of the AS-side mounting cylinder portion 43a on the tip end side in the axial direction (upper side in FIG. 10) is supported by the washer 34 and the pair of AS-side cover fixing convex portions 40a. Thereby, the movement of the AS side holder cover 43 in the axial direction with respect to the AS side pivot holder 40 is restricted.

  Here, the outer diameter dimension of the washer 34 is larger than the outer diameter dimension of the tip portion of the AS side pivot holder 40, and is prevented from being detached by a toothed retaining ring (tea washer) 35.

  As shown in FIGS. 9 and 13, the AS side pivot holder 40 is integrally provided with an AS side fixing arm 40 b for fixing the AS side pivot holder 40 to the vehicle 10. The AS-side fixed arm 40 b extends in a direction that intersects the axial direction of the AS-side pivot holder 40. The longitudinal base end of the AS side fixed arm 40b is connected to the AS side pivot holder 40, and an AS side bush 44 made of rubber or the like is attached to the longitudinal end of the AS side fixed arm 40b.

  Here, the AS-side bush 44 is provided between the AS-side fixed arm 40b (AS-side pivot holder 40) and the vehicle 10, and prevents the vibration of the wiper device 20 from being transmitted to the vehicle 10, thereby preventing the vehicle interior. Improves quietness. Furthermore, it is possible to prevent the vibration of the vehicle 10 from being transmitted to the wiper device 20, and thus it is possible to effectively prevent the wiper device 20 from being damaged by the vibration of the vehicle 10.

  As shown in FIG. 2, the wiper motor 21 is also fixed to the vehicle 10 via a bush BS made of rubber or the like. That is, the wiper device 20 of the present embodiment is fixed to the vehicle 10 with three-point support via the DR-side bush 36, the AS-side bush 44, and the bush BS (three in total).

  Further, the AS side pivot holder 40 includes an AS side frame fixing portion 40c that is inserted into the other end of the frame member 50 (see FIG. 2) and the other end of the frame member 50 is fixed by caulking. The AS side frame fixing portion 40c is disposed on the opposite side of the AS side fixing arm 40b with the AS side pivot holder 40 as the center. As a result, the AS side pivot holder 40 is supported in a substantially balanced manner between the AS side fixed arm 40b and the AS side frame fixing portion 40c, and the AS side pivot holder 40 when the AS side pivot shaft 25b swings. Can be effectively suppressed.

  As shown in FIGS. 9 to 13, the AS-side holder cover 43 includes an AS-side mounting cylinder portion 43 a that covers the periphery of the AS-side pivot holder 40, and on the radially inner side of the AS-side mounting cylinder portion 43 a, A pair of AS-side cover fixing recesses 43b (see FIG. 11B) is provided. These AS side cover fixing recesses 43b are recessed outward in the radial direction of the AS side mounting cylinder 43a, and are provided at equal intervals (180 degree intervals) in the circumferential direction of the AS side mounting cylinder 43a. . And a pair of AS side cover fixing convex part 40a (refer FIG. 10) provided in the circumference | surroundings of AS side pivot holder 40 has entered into a pair of AS side cover fixing recessed part 43b.

  An AS-side umbrella portion 43c that radially spreads around the AS-side mounting cylinder portion 43a is integrally provided on the axially proximal end side (lower side in FIG. 9) of the AS-side mounting cylinder portion 43a. That is, the AS-side umbrella portion 43c extends in a direction intersecting with the axial direction of the AS-side pivot shaft 25b.

  Here, the AS side umbrella part 43c comprises the umbrella part in this invention.

  The AS-side umbrella portion 43c receives rainwater (fluid) W1 flowing from the AS-side pivot hole 15b (see FIGS. 12 and 13) on the tip end side in the axial direction of the AS-side pivot shaft 25b. Here, the size of the AS-side umbrella portion 43c is large enough to cover the AS-side pivot holder 40 with a margin when the AS-side pivot holder 40 is viewed from the axial front end side (upper side in FIG. 9). Is set.

  As shown in FIG. 11, an arc-shaped wall portion 43d formed in a substantially arc shape when the AS-side pivot holder 40 is viewed from the front end side in the axial direction is partly around the AS-side umbrella portion 43c. Is provided. Further, a flat wall portion 43e formed in a substantially flat plate shape when the AS side pivot holder 40 is viewed from the front end side in the axial direction is provided in a part of the periphery of the AS side umbrella portion 43c. Both the arc-shaped wall 43d and the flat wall 43e protrude from the AS umbrella 43c in the axial direction of the AS pivot shaft 25b.

  Here, the arcuate wall 43d constitutes the first wall in the present invention, and the flat wall 43e constitutes the second wall in the present invention.

  Then, the AS side pivot shaft 25b (AS side mounting cylinder portion 43a) and the AS side umbrella portion 43c as one side (vehicle rear side) and the AS side pivot shaft 25b (AS side mounting cylinder portion 43a) as the center. When a line segment connecting the other side (vehicle front side) of the side umbrella part 43c is LN, the arc-shaped wall part 43d is arranged on the vehicle rear side along the extending direction of the line segment LN, and is a flat wall The portion 43e is disposed on the vehicle front side along the extending direction of the line segment LN. The arcuate wall portion 43d is formed in an arc shape that is recessed on the opposite side (vehicle rear side) to the flat plate wall portion 43e side along the extending direction of the line segment LN. It is formed in a flat plate shape extending in the direction intersecting with the minute LN (vehicle width direction).

  The height dimension of the arc-shaped wall part 43d and the height dimension of the flat plate-like wall part 43e are both set to substantially the same height dimension. Specifically, the height dimension of the first wall portion 33d (see FIG. 3) of the DR-side holder cover 33 that is set high and the height dimension of the second wall portion 33f (see FIG. 3) are substantially the same. The height dimension is set.

  As a result, the rainwater W1 that flows from the AS side pivot hole 15b (see FIGS. 12 and 13) to the AS side holder cover 43 and vigorously flows into the AS side umbrella portion 43c, the arc-shaped wall portion 43d, and the flat plate wall portion 43e. It can be effectively prevented from bouncing off and leaking outside.

  Here, as shown in FIG. 12, a cowl top cover 15 is provided in the direction in which rainwater W1 flows, and a part of the cowl top cover 15 and the flat wall portion 43 e are arranged in the vertical direction of the vehicle 10. On the other hand, they overlap each other. Thereby, the leakage to the exterior of the rainwater W1 which flowed into the AS side holder cover 43 is suppressed more effectively.

  The cowl top cover 15 constitutes a vehicle body panel in the present invention.

  As shown in FIG. 11, drainage ports 43f are respectively provided between both end portions of the arc-shaped wall portion 43d and both end portions of the flat wall portion 43e. In other words, the pair of drainage ports 43f are formed by the AS-side umbrella portion 43c, the arc-shaped wall portion 43d, and the flat plate-like wall portion 43e, respectively. The pair of drainage ports 43f are arranged to face each other in the direction intersecting the line segment LN (vehicle width direction), and the pair of drainage ports 43f are respectively directed to the vehicle width direction. As a result, as shown in FIG. 13, the rainwater W <b> 1 that has flowed into the AS-side umbrella 43 c of the AS-side holder cover 43 is discharged not in the front of the vehicle 10 but in the vehicle width direction of the vehicle 10.

  Here, the pair of drainage ports 43f constitutes a drainage part in the present invention.

  Further, as shown in FIG. 11, a pair of inclined walls 43g are provided on the surface of the flat wall portion 43e, that is, on the AS side mounting cylinder portion 43a (AS side pivot shaft 25b) side of the flat wall portion 43e. ing. These inclined walls 43g are formed in a substantially triangular shape, and descend from the substantially central portion of the flat plate-like wall portion 43e toward the respective drain ports 43f in a slide shape. Thereby, the rainwater W1 which has flowed into the AS side umbrella portion 43c of the AS side holder cover 43 is guided toward the pair of drain ports 43f (see FIG. 13). That is, the pair of inclined walls 43g has a function of quickly discharging the rainwater W1 to the outside from the pair of drain ports 43f.

  Further, the pair of inclined walls 43g is provided across the flat wall portion 43e and the AS side umbrella portion 43c. Thereby, the intensity | strength between the flat wall part 43e and the AS side umbrella part 43c is improved. Thus, the pair of inclined walls 43g also has a function of improving the strength of the AS-side holder cover 43. However, if the pair of inclined walls 43g are made too large, there is a possibility that the rainwater W1 having a momentum will get over the flat wall portion 43e. Therefore, the size of the pair of inclined walls 43g is set to an appropriate size so as not to be too large.

  Further, as shown in FIG. 11 (b), on the back surface of the flat wall portion 43e, that is, on the opposite side of the flat wall portion 43e to the AS side mounting cylinder portion 43a (AS side pivot shaft 25b) side, A flat rib 43h is provided. The rib 43h is disposed between the flat wall portion 43e and the AS-side umbrella portion 43c, and specifically, disposed on the back side of the pair of inclined walls 43g. The rib 43h protrudes from the back surface of the flat wall portion 43e at a predetermined height in a direction substantially parallel to the AS-side pivot shaft 25b (see FIG. 12). Moreover, the rib 43h is extended in the direction (vehicle width direction) which cross | intersects the line segment LN similarly to the flat wall part 43e.

  Thus, by providing the rib 43h on the back surface of the flat wall portion 43e, as shown in FIG. 12, the rain water W2 that has passed over the flat wall portion 43e is removed from the base end side of the AS side pivot shaft 25b. Not to reach. Specifically, the rainwater W2 that has passed over the flat wall portion 43e and entered the back surface of the flat wall portion 43e flows down the cowl top panel 14 along the surface of the rib 43h, and the base end of the AS side pivot shaft 25b. The link mechanism 24 (see FIG. 2) on the side is not reached. Further, by providing the rib 43h in a direction substantially parallel to the AS side pivot shaft 25b, the rib 43h is prevented from projecting greatly outward in the radial direction of the AS side pivot shaft 25b, and the AS side holder cover 43 is reduced in size. it can.

  Furthermore, in addition to controlling the flow direction of the rainwater W2 as described above, the rib 43h, as shown in FIG. 11 (b), is similar to the pair of inclined walls 43g and AS It has a function of improving the strength between the side umbrella portion 43c. That is, the rib 43h also has a function as a reinforcing rib.

  Around the pair of drain ports 43f, the discharge direction of the rainwater W1 flowing to the AS-side umbrella portion 43c of the AS-side holder cover 43 with the wiper device 20 mounted on the vehicle 10 is set directly below the vehicle 10 (predetermined Guide walls 43k for guiding in the direction) are provided. These guide walls 43k are provided over the AS-side umbrella portion 43c, the arc-shaped wall portion 43d, and the flat plate-like wall portion 43e, and are formed in a substantially U shape.

  In this way, by providing the guide wall 43k around the drain port 43f, the cowl top panel located directly below the AS-side holder cover 43 while preventing the rainwater W1 from jumping out from the drain port 43f in the vehicle width direction. The rainwater W <b> 1 is drained to the position 14 to prevent the rainwater W <b> 1 from scattering to the link mechanism 24. Further, the rainwater W is prevented from flowing from the drain port 43f to the back surface of the AS side umbrella portion 43c and the flat wall portion 43e.

  Here, as shown in FIG. 1, the AS-side holder cover 43 is provided at a substantially central portion along the vehicle width direction of the vehicle 10. And the direction which crosses the line segment LN (refer Fig.11 (a)) is a vehicle width direction. Therefore, as shown in FIG. 13, there are no other members such as other body panels in the opening direction of the pair of drain ports 43f, and a relatively large space is secured.

  Therefore, even if the rainwater W1 jumps out of the pair of drain ports 43f in the vehicle width direction, there are no various members or the like (obstacles) beyond that, and the rainwater W1 is prevented from bouncing back. Therefore, the scattering of the rainwater W1 to the link mechanism 24 (see FIG. 12) is also effectively suppressed by this.

  Furthermore, as shown in FIG. 12, in a state where the wiper device 20 is fixed to the vehicle 10, the AS-side pivot shaft 25b is inclined at a predetermined angle (approximately 45 degrees) forward of the vehicle. This is due to the inclination of the front windshield 11. That is, for example, when the front windshield has an angle close to vertical as in a wagon car, the tilt angle of the pivot shaft is close to horizontal. On the other hand, when the front windshield is at an angle close to horizontal as in a sports car, the tilt angle of the pivot shaft is close to vertical.

  Here, the vehicle 10 constitutes a fixed object in the present invention.

  In the wiper device 20 of the present embodiment, the AS side pivot shaft 25b is inclined at an angle of approximately 45 degrees forward of the vehicle. Therefore, the pair of drainage ports 43f are disposed below the AS side pivot shaft 25b in the vertical direction of the vehicle 10. Accordingly, the drainage position of the rainwater W1 can be further away from the link mechanism 24. That is, the link mechanism 24 is more difficult to get wet.

  As described above in detail, according to the wiper device 20 according to the present embodiment, the rainwater W1 that has flowed into the AS-side umbrella 43c between the arcuate wall 43d and the flat wall 43e is separated by a line segment. Since the pair of drainage ports 43f that are discharged in the direction intersecting with the LN are provided, the drainage direction of the rainwater W1 can be bent. Therefore, it becomes possible to drain into a relatively large space where there are no various members nearby, and as a result, reliability can be improved.

  Moreover, according to the wiper device 20 according to the present embodiment, the arc-shaped wall 43d is recessed on the opposite side (vehicle rear side) from the flat wall 43e side along the extending direction of the line segment LN. The flat wall portion 43e is formed in a shape and extends in a direction intersecting the line segment LN. Therefore, the area of the AS side umbrella part 43c into which the rainwater W1 flows can be made sufficiently large. Further, the rainwater W1 is received by the flat wall portion 43e so that it can be easily guided to the drain port 43f.

  Further, according to the wiper device 20 according to the present embodiment, the flat wall portion 43e protrudes from the back surface opposite to the AS-side pivot shaft 25b side and intersects the line segment LN. A rib 43h is provided extending in the direction. The rib 43h protrudes from the back surface of the flat wall portion 43e in a direction substantially parallel to the AS side pivot shaft 25b. Therefore, it is possible to prevent the rainwater W2 (see FIG. 12) that has gone over the flat wall portion 43e from reaching the base end side of the AS-side pivot shaft 25b.

  Further, according to the wiper device 20 according to the present embodiment, the inclined wall 43g for guiding the rainwater W1 to the pair of drainage ports 43f is provided on the surface of the flat wall portion 43e on the AS side pivot shaft 25b side. Yes. Therefore, the rainwater W1 flowing into the AS-side umbrella portion 43c is guided toward the pair of drainage ports 43f (see FIG. 13), and as a result, the rainwater W1 is reliably and quickly discharged to the outside from the pair of drainage ports 43f. be able to.

  Furthermore, according to the wiper device 20 according to the present embodiment, the AS-side holder cover 43 is provided at a substantially central portion along the vehicle width direction of the vehicle 10, and the direction intersecting the line segment LN is the vehicle width direction. ing. Thereby, in the opening direction of the pair of drain ports 43f, various members such as other body panels do not exist, and a relatively large space is secured (see FIG. 13). Therefore, even if the rainwater W1 jumps out of the pair of drain ports 43f in the vehicle width direction, there is no obstacle ahead, preventing the rainwater W1 from bouncing back, and eventually the rainwater W1 to the link mechanism 24. Scattering is effectively suppressed.

  Further, according to the wiper device 20 according to the present embodiment, the guide wall 43k that guides the discharge direction of the rainwater W1 directly below the vehicle 10 is provided around the pair of drain ports 43f. Therefore, the rainwater W1 can be prevented from jumping out from the drain port 43f in the vehicle width direction.

  Furthermore, according to the wiper device 20 according to the present embodiment, the pair of drain ports 43f are disposed below the AS side pivot shaft 25b in a state where the wiper device 20 is fixed to the vehicle 10. Therefore, the direction of drainage of the rainwater W1 can be further away from the link mechanism 24, and consequently the link mechanism 24 is more difficult to receive water.

  Moreover, according to the wiper device 20 according to the present embodiment, the flat wall portion 43e overlaps the cowl top cover 15 in the direction in which the rainwater W1 flows. Therefore, it is possible to more effectively suppress the leakage of the rainwater W1 flowing to the AS side holder cover 43 to the outside.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above embodiment, the swing member that swings the pivot shaft is the wiper motor 21 and the link mechanism 24. However, the present invention is not limited to this, and the rotation of the output shaft is in the forward and reverse directions. A controlled wiper motor alone to be controlled may be used as the swing member. In this case, since the control type wiper motor is arranged immediately below the pivot shaft, the size of the holder cover (cover) is set in accordance with the control type wiper motor.

  Moreover, in the said embodiment, although the wiping pattern of the wiper apparatus 20 showed what was a tandem type, this invention is not limited to this, It applies to the wiper apparatus of other wiping patterns, such as a counter wiping type | mold. Can do.

  Furthermore, in the above-described embodiment, the wiper device 20 for wiping the front windshield 11 of the vehicle 10 has been described as an example. However, the present invention is not limited to this, and the rear glass of the vehicle 10, a railway vehicle, an aircraft, etc. The present invention can also be applied to a wiper device that wipes the windshield.

  In addition, the material, shape, dimensions, number, installation location, and the like of each component in the above embodiment are arbitrary as long as the present invention can be achieved, and are not limited to the above embodiment.

10 Vehicle (fixed object)
DESCRIPTION OF SYMBOLS 11 Front windshield 11a, 11b Wiping range 12 DR side wiper member 12a DR side wiper blade 12b DR side wiper arm 13 AS side wiper member 13a AS side wiper blade 13b AS side wiper arm 14 Cowl top panel 15 Cowl top cover (vehicle body panel)
15a DR side pivot hole 15b AS side pivot hole 20 Wiper device 21 Wiper motor (oscillating member)
22 Electric motor 23 Gear case 24 Link mechanism (oscillating member)
24a Crank arm 24b Drive rod 24c DR side drive lever 24d Connecting rod 24e AS side drive lever 25a DR side pivot shaft 25b AS side pivot shaft (pivot shaft)
30 DR side pivot holder 30a DR side cover fixing convex part 30b DR side fixing arm 30c Notch part 30d DR side frame fixing part 31 Bearing 32 Seal member 33 DR side holder cover 33a DR side mounting cylinder part 33b DR side cover fixing concave part 33c DR Side umbrella part 33d 1st wall part 33e Inclined wall 33f 2nd wall part 33g Insertion hole 33h Cylindrical part 33k Inner wall 33m Stopping claw 33n Abutting surface 33p Guide slope 33q Press surface 34 Washer 35 Toothed retaining ring 36 DR side bush 36a Body part 36b Collar member 36c First annular part 36d Second annular part 40 AS side pivot holder (holder member)
40a AS side cover fixing convex part 40b AS side fixing arm 40c AS side frame fixing part 41 Bearing 42 Seal member 43 AS side holder cover (cover)
43a AS side mounting cylinder part 43b AS side cover fixing recess 43c AS side umbrella part (umbrella part)
43d Arc-shaped wall (first wall)
43e Flat wall (second wall)
43f Drainage port (drainage part)
43g Inclined wall 43h Rib 43k Guide wall 44 AS side bush 50 Frame member BJ1, BJ2, BJ3, BJ4 Ball joint BL Fixing bolt BS Bush HD, HD1 Head LN Line segment LRP Lower reverse position OP Opening SP Annular space URP Upper reverse position W, W1, W2 Rainwater (fluid)
WS, WS1 washer

Claims (9)

A wiper device that swings a wiper member,
A pivot shaft provided at the tip of the wiper member;
A swing member provided at a base end of the pivot shaft and swinging the pivot shaft;
A holder member that rotatably supports the pivot shaft;
A cover covering the holder member;
With
The cover is
An umbrella portion extending in a direction crossing the axial direction of the pivot shaft;
A first wall portion protruding from the umbrella portion in the axial direction of the pivot shaft and disposed on one side of the umbrella portion around the pivot shaft;
A second wall portion protruding from the umbrella portion in the axial direction of the pivot shaft and disposed on the other side of the umbrella portion around the pivot shaft;
The fluid that is provided between the first wall portion and the second wall portion and flows into the umbrella portion intersects with a line segment that connects one side of the umbrella portion and the other side of the umbrella portion. Drainage section to be discharged,
With
Wiper device. The wiper device according to claim 1, wherein
The first wall portion is formed in an arc shape that is recessed on the opposite side to the second wall portion side along the extending direction of the line segment,
The second wall portion is formed in a flat plate shape extending in a direction intersecting with the line segment.
Wiper device. The wiper device according to claim 1 or 2,
A rib protruding from the back surface and extending in a direction intersecting with the line segment is provided on the back surface of the second wall portion opposite to the pivot shaft side.
Wiper device. The wiper device according to claim 3, wherein
The rib protrudes from the back surface in a direction substantially parallel to the pivot shaft.
Wiper device. In the wiper device according to any one of claims 1 to 4,
An inclined wall for guiding the fluid to the drainage portion is provided on the surface of the second wall portion on the pivot shaft side.
Wiper device. In the wiper device according to any one of claims 1 to 5,
The cover is provided in a substantially central portion along the vehicle width direction of the vehicle, and a direction intersecting a line segment connecting one side of the umbrella portion and the other side of the umbrella portion is the vehicle width direction.
Wiper device. The wiper device according to any one of claims 1 to 6,
A guide wall that guides the discharge direction of the fluid in a predetermined direction is provided around the drainage part.
Wiper device. The wiper device according to any one of claims 1 to 7,
In the state where the wiper device is fixed to a fixed object, the drainage portion is disposed below the pivot shaft.
Wiper device. The wiper device according to any one of claims 1 to 8,
The second wall overlaps a vehicle body panel in a direction in which the fluid flows;
Wiper device.

Images