JP2010030373A - Wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly prevent a flexible hose from being clamped between an arm support and an arm shank when the lock back state of the arm shank is returned to an original state. <P>SOLUTION: A first support part 63 for supporting the flexible hose 80 is provided on the arm support 60 without providing a fastening margin, and a second support part 53 for supporting the flexible hose 80 is provided on the arm shank 50 with a predetermined fastening margin. An arm shank 50 side of the flexible hose 80 can be fixed to the arm shank 50, and in an arm support 60 side of the flexible hose 80, movement in an axial direction is allowed by the first support part 63. Since a relax portion S of the flexible hose 80 required at lock back can be formed at a base end side of the arm support 60, when the lock back state is returned to the original state, the flexible hose 80 is not clamped between the arm support 60 and the arm shank 50. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wiper device that is driven to swing by a drive source and wipes off deposits attached to a windshield.

  2. Description of the Related Art Conventionally, a wiper device is provided in a vehicle such as an automobile, and the wiper device is operated so as to wipe out deposits such as rain and snow adhering to a windshield and splashes of a front vehicle to ensure visibility.

  The wiper device includes a wiper arm that is swingably driven by an electric motor (drive source), and a wiper blade that is provided on the windshield. The wiper arm includes an arm support whose base end side is fixed to the output shaft of the electric motor, and an arm shank whose base end side is rotatably connected to the front end side of the arm support. Further, the wiper blade has a blade rubber which is rotatably provided at the tip end side of the arm shank and contacts the windshield.

  Some wiper devices are equipped with a washer nozzle on the wiper arm in order to inject the washer liquid onto the optimum portion of the windshield surface (near the wiping portion of the blade rubber). As a wiper device in which a washer nozzle is attached to a wiper arm, for example, the one described in Patent Document 1 is known.

In the wiper device described in Patent Document 1, a washer nozzle is attached to an arm main body (arm shank), and a piping hose (from the base end side of the arm head (arm support)) along the arm head and the arm main body ( Flexible hose) and the tip side of the piping hose is connected to the washer nozzle. The arm body side of the piping hose is extended to the washer nozzle through the inside of the tension coil spring in an unrestrained state (free state), and the arm head side of the piping hose is a hose clamp portion provided on the wall of the arm head. In addition, the hose holder is held in a restrained state with a predetermined tightening allowance.
Japanese Patent Laying-Open No. 2004-203180 (FIG. 4)

  According to the wiper device described in Patent Document 1 described above, the arm head side of the piping hose is fixed to the hose clamp portion and the hose holder of the arm head. Therefore, in order to prevent excessive force from being applied to the piping hose when the arm body is raised (locked back) with respect to the arm head, a slack portion of the piping hose is provided between the arm head and the arm body. It is necessary to keep.

  However, if the slack portion of the piping hose is provided between the arm head and the arm body, the slack portion does not bend to the vehicle body side when the arm body is returned from the lockback state to the arm body on the opposite side. In addition, there is a concern about bending toward the arm body. And when the slack part is bent between the arm head and the arm body, the piping hose is pinched between the arm head and the arm body, causing the piping hose to deteriorate early, and the washer liquid is Leakage may occur in the middle of the hose, and problems such as a decrease in the washer fluid injection force (decrease in cleaning performance) due to the leakage may occur.

  An object of the present invention is to provide a wiper device that can reliably prevent a flexible hose from being sandwiched between an arm support and an arm shank when the lockback state of the arm shank is restored. It is in.

  A wiper device according to the present invention is a wiper device that is driven to swing by a drive source to wipe off deposits attached to a windshield, and has a base end fixed to an output shaft of the drive source, a base end An arm shank whose side is pivotally connected to the distal end side of the arm support, a wiper blade pivotally coupled to the distal end side of the arm shank, and the windshield side of the arm support and the arm shank A flexible hose that is provided and in which a washer fluid flows, a washer nozzle that is provided on the arm shank side of the flexible hose and that injects the washer fluid toward the windshield, and the arm support A first support portion provided on the arm shank side and supporting the flexible hose without a tightening margin; Provided in the arm support side of the arm shank, characterized in that it comprises a second support portion for supporting the flexible hose with a predetermined tightening allowance.

  In the wiper device of the present invention, the arm support side of the flexible hose is disposed with a predetermined distance in the radial direction from the output shaft so as to surround the output shaft, and the arm shank is attached to the arm support. The arm support side of the flexible hose is close to the output shaft when the flexible hose is raised.

  In the wiper device of the present invention, the first support part and the second support part are provided by being offset to one side in the short direction of the arm support and the arm shank, and the arm support side of the flexible hose is provided. The arm support is provided so as to surround the output shaft from one side in the short direction to the other side.

  According to the present invention, in the wiper device with a washer nozzle, the arm support on the arm shank side of the arm support is provided with the first support portion that supports the flexible hose without having a tightening margin, and on the arm support side of the arm shank, Since the second support portion that supports the flexible hose with a predetermined tightening margin is provided, the arm shank side of the flexible hose can be fixed to the arm shank. Since the arm support side of the flexible hose is allowed to move in the axial direction by the first support portion, the slack portion of the flexible hose that is required when the arm shank is locked back is used as the first support of the arm support. It can provide in the base end side rather than a part. Therefore, when the lockback state of the arm shank is returned to the original state, it is possible to reliably prevent the flexible hose from being sandwiched between the arm support and the arm shank.

  According to the present invention, when the arm support side of the flexible hose is disposed with a predetermined distance in the radial direction from the output shaft so as to surround the output shaft, and when the arm shank is raised with respect to the arm support, Since the arm support side of the flexible hose is close to the output shaft, the bending direction of the slack portion of the flexible hose can be directed around the output shaft. Therefore, it is possible to suppress the contact of the flexible hose with the arm support or the attachment object of the wiper device in the axial direction of the output shaft.

  According to the present invention, the first support portion and the second support portion are provided by being offset to one side in the short direction of the arm support and the arm shank, and the arm support side of the flexible hose is provided in the short direction of the arm support. Since the output shaft is provided so as to surround from one side to the other side, it is possible to simplify the handling of the flexible hose with the bent portion on the arm support side of the flexible hose as one location around the output shaft. In addition, since the direction of routing around the output shaft of the flexible hose can be determined on the basis of the first support portion and the second support portion, it is possible to prevent erroneous assembly of the flexible hose.

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

  1 is a rear view of a vehicle equipped with a wiper device according to the present invention, FIG. 2 is an enlarged perspective view of the wiper device of FIG. 1, and FIG. 3 is an enlarged view of a broken line circle A portion of FIG. 4 is a view of the arm support of FIG. 3 as viewed from the direction of the arrow D, FIG. 5 is a view of the arm shank of FIG. 3 as viewed from the direction of the arrow E, and FIG. FIG. 7 is an enlarged view, and FIG. 7 is an enlarged view of the washer nozzle in the broken line circle C portion of FIG.

  As shown in FIG. 1, a back door 11 as an opening / closing body is provided on the rear side of the vehicle 10, and the back door 11 is provided by a hinge shaft (not shown) provided on a roof portion 12 of the vehicle 10. It is supported in a cantilevered state and opens and closes in the vertical direction around the hinge axis. That is, the back door 11 adopts a so-called upper hinge lower opening type structure.

  The back door 11 is provided with a rear glass 13 as a windshield, and the rear glass 13 can open and close an opening 14 formed in the back door 11. As described above, in the vehicle 10, the rear glass 13 can be opened and closed independently of the back door 11, thereby loading and unloading the luggage into the cargo compartment (not shown) without opening and closing the back door 11. Can be done. The rear glass 13 is driven to open and close by an elevating mechanism (not shown) provided with an electric motor and a regulator provided inside the back door 11.

  The back door 11 is provided with a wiper device 20, and the wiper device 20 includes a wiper arm 30 and a wiper blade 40. Inside the back door 11, a wiper motor 15 is provided as a drive source for swinging and driving the wiper device 20, and a base of the wiper arm 30 is provided at the distal end side of the output shaft 16 provided at the rotation center of the wiper motor 15. The end side is fixed by a fastening bolt (not shown).

  The wiper motor 15 is rotationally driven in the forward and reverse directions by operating an operation switch (not shown) provided in the passenger compartment or the like, and the wiper blade 40 provided on the distal end side of the wiper arm 30 is rotationally driven by the wiper motor 15. Along with this, the wiping range 17 on the rear glass 13 is wiped.

  When the operation switch is turned on and the wiper motor 15 is rotationally driven in the forward and reverse directions, the wiper blade 40 is driven to swing between the lower reverse position and the upper reverse position shown in FIG. The Thereby, deposits, such as rain water, adhering to the rear glass 13 can be wiped off. On the other hand, when the operation switch is turned off and the wiper motor 15 is stopped, the wiper blade 40 is stored in the storage position shown in FIG.

  When the wiper blade 40 is in the retracted position, the slider SD (see FIG. 2) provided on the arm shank 50 rides on the lifter LT provided on the back door 11. As a result, the blade rubber 43 (see FIG. 2) of the wiper blade 40 can be separated from the glass surface of the rear glass 13, and the rear glass 13 can be easily opened and closed and the cargo can be loaded and unloaded.

  FIG. 2 shows the wiper device 20 viewed from the back side in a state where the wiper device 20 is at the lower inversion position of the wiping range 17.

  As shown in FIG. 2, the wiper arm 30 includes an arm support 60 and an arm shank 50. The base end side (left side in the figure) of the arm shank 50 is rotatably connected to the distal end side (right side in the figure) of the arm support 60, and there is a tension between the arm support 60 and the arm shank 50. A spring 70 is attached. The tension spring 70 is configured to press the distal end side of the arm shank 50, that is, the wiper blade 40 toward the rear glass 13. As a result, the blade rubber 43 is pressed against the glass surface of the rear glass 13 with a predetermined pressing force, and the glass surface of the rear glass 13 can be wiped without being left behind.

  The arm support 60 forms the base end side (wiper motor 15 side) of the wiper arm 30 and is formed in a substantially rectangular parallelepiped shape by injection molding a resin material such as plastic. As shown in FIGS. 3 and 4, a mounting hole 61 to which the distal end side of the output shaft 16 is attached is formed on the longitudinal base end side of the arm support 60, and the longitudinal base end side of the arm support 60 is It is fixed to the output shaft 16 by fastening bolts (not shown). Further, a recess 62 extending in the longitudinal direction of the arm support 60 is formed on the distal end side in the longitudinal direction of the arm support 60.

  The concave portion 62 is integrally provided with a first cylindrical portion 62 a and a second cylindrical portion 62 b that cross the concave portion 62 in the lateral direction of the arm support 60. The diameter of the first cylindrical part 62a is set to be larger than the diameter of the second cylindrical part 62b, and the convex part 51 of the arm shank 50 shown in FIG. 5 is formed on the outer peripheral surface of the first cylindrical part 62a. The support concave surface 51a formed in the slidable contact is formed. Further, the proximal end side of the tension spring 70 is hooked on the second cylindrical portion 62b.

  On the arm shank 50 side of the arm support 60, a first support portion 63 that supports the flexible hose 80 without tightening is formed. As shown in FIG. 3, the first support portion 63 has a predetermined distance L <b> 1 on one side in the short direction of the arm support 60 (lower side in the figure) with reference to the center line C <b> 1 along the longitudinal direction of the arm support 60. It is offset by minutes. The first support portion 63 is provided with a first through hole 63a through which the flexible hose 80 passes. As shown in FIG. 4, the diameter dimension R1 of the first through hole 63a is set to be flexible hose 80. The diameter is set to be larger than the diameter R in the natural state (non-deformed state) (R1> R). As a result, the arm support 60 side of the flexible hose 80 can move in the first through hole 63a in the axial direction with substantially no resistance in a state where movement in the radial direction is restricted. (Unrestrained state).

  The arm support 60 is covered with a cover member 64. The cover member 64 has a substantially U-shaped cross section by injection molding a resin material such as plastic. The cover member 64 is set to a size larger than the arm support 60 so as to form a predetermined gap O between the cover member 64 and the arm support 60. Thereby, the step between the arm support 60 and the arm shank 50 is substantially eliminated to obtain a sense of unity, and the arm support 60 and the fastening bolts are prevented from being exposed to the outside, and the appearance of the wiper device 20 is improved. be able to.

  As shown in FIG. 2, the arm shank 50 forms the tip end side (wiper blade 40 side) of the wiper arm 30, and is formed into a substantially U-shaped cross section by injection molding a resin material such as plastic. Yes. A substantially intermediate portion in the longitudinal direction of the primary lever 41 forming the wiper blade 40 is rotatably coupled to the distal end side in the longitudinal direction of the arm shank 50. Further, as shown in FIG. 5, a convex portion 51 extending in the longitudinal direction of the arm shank 50 is formed on the longitudinal base end side of the arm shank 50.

  As shown in FIG. 3, the convex portion 51 can be inserted into the concave portion 62 of the arm support 60, and is formed in the convex portion 51 shown in FIG. 5 as the convex portion 51 is inserted into the concave portion 62. The supporting concave surface 51a comes into contact with the outer peripheral surface of the first cylindrical portion 62a provided in the concave portion 62 shown in FIG.

  A plurality of reinforcing ribs 52 are integrally formed inside the arm shank 50. Each reinforcing rib 52 reduces the weight of the arm shank 50 and increases the rigidity of the arm shank 50 to prevent deformation such as twisting. It is supposed to be. A hook portion (not shown) is integrally provided on the arm support 60 side of each reinforcing rib 52, and the tip end side of the tension spring 70 is hooked on the hook portion.

  As shown in FIG. 6, each of the reinforcing ribs 52 disposed on the distal end side from the substantially middle portion in the longitudinal direction of the arm shank 50 has a support recess 52 a that supports the flexible hose 80 with a predetermined tightening margin. Is provided. By attaching the flexible hose 80 to each support recess 52a, the flexible hose 80 can be securely fixed to the arm shank 50, and the exposure of the flexible hose 80 to the outside is suppressed and the appearance of the wiper device 20 is improved. Can be improved.

  On the arm support 60 side of the arm shank 50, as shown in FIG. 3, a second support portion 53 that supports the flexible hose 80 with a predetermined fastening margin is formed. The first support part 63 is disposed on an extension line of the center line C2. The second support portion 53 is provided with a second through hole 53a through which the flexible hose 80 passes. As shown in FIG. 5, the diameter dimension R2 of the second through hole 53a is set to be flexible hose 80. The diameter dimension is set to be smaller than the diameter dimension R in the natural state (R2 <R). Thereby, the arm shank 50 side of the flexible hose 80 is fixed to the arm shank 50 by the support recess 52a and the second support portion 53 of the reinforcing rib 52 (restraint state).

  The second through hole 53a is formed with a notch 53b having a width smaller than the diameter dimension R2 of the second through hole 53a, and allows the flexible hose 80 to pass through the notch 53b while being elastically deformed. Thus, the flexible hose 80 is attached to the second through hole 53a.

  As shown in FIG. 2, the slider SD is fixed to a substantially intermediate portion in the longitudinal direction of the arm shank 50 by a pair of fixing screws 54. The slider SD is formed in a substantially cylindrical shape, and slides on the lifter LT provided on the back door 11 shown in FIG. In this way, by forming the slider SD in a substantially cylindrical shape, the slider SD and the lifter LT are brought into substantially line contact with each other, thereby enabling smooth relative movement between the two.

  The wiper blade 40 includes a primary lever 41 formed in a predetermined shape from a resin material such as plastic, and a pair of secondary levers 42. A substantially intermediate portion in the longitudinal direction of the primary lever 41 is rotatably connected to the distal end side of the arm shank 50, and each secondary lever 42 is rotatably provided at both longitudinal ends of the primary lever 41. .

  Each secondary lever 42 is provided with a plurality of holding claws 44 that hold the blade rubber 43. The holding claws 44 are set as a pair with the blade rubber 43 interposed therebetween, and are arranged opposite to both ends of each secondary lever 42 in the longitudinal direction. Here, the blade rubber 43 is formed of rubber having flexibility, and the blade rubber 43 is integrally provided with a lip portion 45 having a substantially triangular cross section. The tapered tip of the lip 45 is in contact with the rear glass 13 so as to slide on the glass surface of the rear glass 13.

  The flexible hose 80 is formed in a hollow shape by a rubber having flexibility, and is provided on the rear glass 13 side along the longitudinal direction of both the arm support 60 and the arm shank 50 as shown in FIG. Yes. Inside the flexible hose 80, a washer liquid W (two-dot chain arrow in the figure) for cleaning the glass surface of the rear glass 13 circulates.

  On the arm shank 50 side of the flexible hose 80, as shown in FIG. 7, a hollow joint member 81 made of a resin material such as plastic is provided. The joint member 81 is formed in a substantially L shape, and the washer liquid W is circulated therein. A flexible hose 80 is connected to one end side of the joint member 81, and a washer nozzle 82 is connected to the other end side of the joint member 81.

  The washer nozzle 82 is formed in a predetermined shape from a resin material such as plastic, and the washer nozzle 82 is attached to the distal end side of the arm shank 50 together with the joint member 81. The washer nozzle 82 includes a nozzle body 82a, and the nozzle body 82a is disposed so as to face the back side of the blade rubber 43 from a substantially middle portion in the longitudinal direction of the primary lever 41 as shown in FIG.

  The nozzle body 82a is formed with a total of four injection ports 82b (only two are shown in the figure) facing the glass surface of the rear glass 13, and the washer liquid W is injected from each injection port 82b. ing. Reference numeral C3 in FIG. 7 represents the center line of the blade rubber 43, and each injection port 82b sprays over a wide area of the glass surface of the rear glass 13 while avoiding the center line C3 portion (the blade rubber 43 portion). It is provided in the nozzle body 82a.

  As shown in FIG. 3, a hollow joint member 83 made of a resin material such as plastic is provided on the arm support 60 side of the flexible hose 80. The joint member 83 is also formed in a substantially L shape, and the washer liquid W is circulated therein. The joint member 83 is fixed to the back door 11 shown in FIG. 1. A flexible hose 80 is connected to one end side of the joint member 83, and the other end side of the joint member 83 is connected to FIG. One end side of the vehicle side hose 84 shown in FIG.

  As shown in FIG. 3, the arm support 60 side of the flexible hose 80 extends from the one side in the short direction of the arm support 60 toward the output shaft 16 via the first support portion 63. The arm support 60 is directed to the other side in the short direction through the base end side of the support 60. The arm support 60 side of the flexible hose 80 is disposed with a predetermined distance L2 in the radial direction from the output shaft 16 so as to surround the periphery of the output shaft 16. When it is erected (locked back), it comes close to the output shaft 16. That is, a portion surrounding the periphery of the output shaft 16 in the flexible hose 80 is a slack portion S required when the arm shank 50 is locked back.

  As shown in FIG. 1, the other end side of the vehicle-side hose 84 is connected to a washer tank 86 via a washer pump 85 provided in an engine room or the like (not shown) of the vehicle 10. The washer pump 85 is operated by operating an operation switch (not shown) provided in the passenger compartment or the like, and the washer liquid W is sent to the vehicle-side hose 84 by operating the washer pump 85. The washer fluid W fed into the vehicle-side hose 84 is sprayed through the joint member 83, the flexible hose 80, the joint member 81 and the washer nozzle 82 as shown by the two-dot chain line arrows in FIGS. The

  Next, the operation of the wiper device 20 configured as described above will be described in detail with reference to the drawings. 8 (a) and 8 (b) are explanatory views for explaining the deformation state of the flexible hose during the wiping operation of the wiper device, and FIGS. 9 (a), (b) and (c) are lockbacks of the wiper device. Explanatory drawing explaining the deformation | transformation state of a flexible hose at the time of operation | movement (at the time of a wiper apparatus stop) is each represented.

[During wiping operation]
When the wiper arm 30 is at the lower inverted position (see FIG. 1) of the wiping range 17, the distance between the slack portion S of the flexible hose 80 and the output shaft 16 is as shown in FIG. It is in the state of the predetermined distance L2. Thereafter, as shown in FIG. 8B, when the output shaft 16 is rotated by the rotational drive of the wiper motor 15, the wiper arm 30 is rotated in the direction of arrow (1) (clockwise) in the drawing. At this time, since the arm shank 50 is not in the lockback state, the distance between the first support portion 63 and the second support portion 53 does not change from the state of the predetermined distance L3.

  Since the joint member 83 provided in the flexible hose 80 is fixed to the back door 11, its position is unchanged regardless of the rotation of the wiper arm 30. Therefore, when the flexible hose 80 rotates together with the wiper arm 30, the slack portion S moves in the direction of the arrow (2) in the figure. Then, the distance between the slack portion S and the output shaft 16 becomes a distance L4 longer than the predetermined distance L2 (L4> L2).

  At this time, since the predetermined gap O is formed between the arm support 60 and the cover member 64, the slack portion S is prevented from being exposed to the outside from the cover member 64. Therefore, the appearance of the wiper device 20 during operation is maintained. Further, since the slack portion S is moved in the radial direction of the output shaft 16 and hardly moves in the axial direction of the output shaft 16, the back door (attachment object) 11 of the slack portion S, the arm support 60, the cover member. Contact to 64 is avoided. Therefore, it is possible to prevent the flexible hose 80 from being deteriorated at an early stage.

  Here, in order for the rotation direction of the wiper arm 30 to correspond to the counterclockwise specification opposite to the above, the first support portion 63 and the second support portion 53 are connected to the other side in the short direction of the arm support 60 (see FIG. The arm support 60 side of the flexible hose 80 is extended from the other side in the short direction of the arm support 60 toward the output shaft 16 via the first support portion 63. That is, the configuration shown in FIG. 8A may be reversed upside down. Thereby, even if the rotation direction of the wiper arm 30 is opposite to the above, the slack portion S of the flexible hose 80 can be separated from the output shaft 16 in accordance with the operation of the wiper device 20 as described above. .

[When locking back]
When the rotation drive of the wiper motor 15 is stopped and the wiper arm 30 is in the retracted position (see FIG. 1), as shown in FIG. 9A, the slack portion S of the flexible hose 80 and the output shaft 16 The distance between them is substantially the same as the predetermined distance L22 (L22≈L2) as in the case where the wiper arm 30 is at the lower inversion position. Note that the distance between the first support portion 63 and the second support portion 53 is substantially the same predetermined distance L33 (L33≈L3) as that when the wiper arm 30 is in the lower inversion position.

  When the arm shank 50 is locked back by gripping the arm shank 50 from the state shown in FIG. 9A, the arm shank 50 is rotated with respect to the arm support 60 around the first cylindrical portion 62a. . Then, as the arm shank 50 rotates, the second support portion 53 is separated from the first support portion 63 as shown by an arrow (3) in FIG. 9B, and the distance between the two is greater than the predetermined distance L33. Becomes a long distance L5 (L5> L33). At this time, the flexible hose 80 moves in the first through hole 63a of the first support portion 63, and the slack portion S of the flexible hose 80 moves in the direction of the arrow (4) in the figure, so The distance between the portion S and the output shaft 16 is a distance L6 shorter than the predetermined distance L22 (L6 <L22). Thereby, the arm shank 50 can be locked back without applying an excessive tensile load to the flexible hose 80.

  When the lockback of the arm shank 50 is returned to the original state from the state shown in FIG. 9B, the state shown in FIG. 9C is obtained. That is, the 2nd support part 53 approaches the 1st support part 63, and the distance between both becomes the predetermined distance L33 from the distance L5. At this time, since the flexible hose 80 can move in the first through hole 63a of the first support portion 63, the flexible hose 80 can be moved between the first support portion 63 and the second support portion 53 as indicated by a symbol F in the drawing. There is no sagging. Therefore, the slack portion S of the flexible hose 80 moves in the direction of the arrow (6) in the drawing, and can return to the state before the arm shank 50 is locked back, that is, the state shown in FIG. .

  Here, the size of the cover member 64 (the size of the gap O) is set in consideration of the amount of movement in the radial direction of the slack portion S during the wiping operation of the wiper device 20 and when the arm shank 50 is locked back. To.

  As described above in detail, according to the wiper device 20 according to the present embodiment, the first support portion 63 that supports the flexible hose 80 without the fastening allowance is provided on the arm shank 50 side of the arm support 60. Since the second support portion 53 that supports the flexible hose 80 with a predetermined tightening margin is provided on the arm support 60 side of the arm shank 50, the arm shank 50 side of the flexible hose 80 is connected to the arm shank 50. It can be fixed to the shank 50. Since the arm support 60 side of the flexible hose 80 is allowed to move in the axial direction by the first support portion 63, the slack portion S of the flexible hose 80 required when the arm shank 50 is locked back is The arm support 60 can be provided closer to the base end side than the first support portion 63. Therefore, it is possible to reliably prevent the flexible hose 80 from being sandwiched between the arm support 60 and the arm shank 50 when the lockback state of the arm shank 50 is restored.

  According to the wiper device 20 according to the present embodiment, the arm support 60 side of the flexible hose 80 is disposed with a predetermined distance L2 in the radial direction from the output shaft 16 so as to surround the output shaft 16, and the arm When the shank 50 is locked back, the arm support 60 side of the flexible hose 80 is close to the output shaft 16, so that the bending direction of the slack portion S of the flexible hose 80 can be directed around the output shaft. Therefore, the contact of the flexible hose 80 to the arm support 60 and the back door 11 in the axial direction of the output shaft 16 can be suppressed, and the flexible hose 80 is deteriorated early, or the arm support 60 and the back It is possible to suppress the door 11 from being scratched.

  According to the wiper device 20 according to the present embodiment, the first support portion 63 and the second support portion 53 are provided by being offset to one side in the short direction of the arm support 60 and the arm shank 50, and the flexible hose 80 is provided. Since the arm support 60 side of the arm support 60 is provided so as to surround the output shaft 16 from one side of the arm support 60 toward the other side, the bent portion of the flexible hose 80 on the arm support 60 side is around the output shaft 16. As one place, the handling of the flexible hose 80 can be simplified. Therefore, the assembly work of the wiper device 20 can be facilitated, and the manufacturing cost can be reduced. In addition, since the direction in which the flexible hose 80 is routed around the output shaft 16 can be determined on the basis of the first support portion 63 and the second support portion 53, it is possible to prevent erroneous assembly of the flexible hose 80. Can do.

  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-described embodiment, the wiper device 20 is provided on the back door 11 of the vehicle 10. However, the present invention is not limited to this, and can be provided on the front side of the vehicle 10.

  In the above-described embodiment, the wiper device 20 is applied to the vehicle 10. However, the present invention is not limited to this, and is also applied to, for example, a wiper device provided in an aircraft, a railway vehicle, a construction machine, or the like. I can do it.

It is the figure which looked at the vehicle carrying the wiper device concerning the present invention from back. It is a perspective view which expands and shows the wiper apparatus of FIG. It is an enlarged view of the broken-line circle | round | yen A part of FIG. It is the figure which looked at the arm support of FIG. 3 from the arrow D direction. It is the figure which looked at the arm shank of FIG. 3 from the arrow E direction. It is an enlarged view of the broken-line circle | round | yen B part of FIG. It is an enlarged view of the washer nozzle in the broken-line circle | round | yen C part of FIG. (A), (b) is explanatory drawing explaining the deformation | transformation state of a flexible hose at the time of the wiping operation | movement of a wiper apparatus. (A), (b), (c) is explanatory drawing explaining the deformation | transformation state of a flexible hose at the time of the lockback operation | movement of a wiper apparatus (at the time of a wiper apparatus stop).

Explanation of symbols

10 Vehicle 11 Back door 12 Roof part 13 Rear glass (wind shield)
14 opening 15 wiper motor (drive source)
16 Output shaft 17 Wiping range 20 Wiper device 30 Wiper arm 40 Wiper blade 41 Primary lever 42 Secondary lever 43 Blade rubber 44 Holding claw 45 Lip part 50 Arm shank 51 Convex part 51a Support concave surface 52 Reinforcement rib 52a Support concave part 53 Second support part 53a Second through hole 53b Notch portion 54 Fixing screw 60 Arm support 61 Mounting hole 62 Recessed portion 62a First cylindrical portion 62b Second cylindrical portion 63 First support portion 63a First through hole 64 Cover member 70 Tension spring 80 Flexible hose 81 Joint member 82 Washer nozzle 82a Nozzle body 82b Injection port 83 Joint member 84 Vehicle side hose 85 Washer pump 86 Washer tank LT Lifter SD Slider S Slack portion W Washer liquid O Gap

Claims (3)

A wiper device that is driven to swing by a drive source and wipes off deposits attached to the windshield,
An arm support whose proximal end is fixed to the output shaft of the drive source;
An arm shank whose proximal end is rotatably connected to the distal end side of the arm support;
A wiper blade rotatably connected to the tip side of the arm shank;
A flexible hose that is provided on the windshield side of the arm support and the arm shank, and in which a washer fluid flows;
A washer nozzle that is provided on the arm shank side of the flexible hose and injects the washer fluid toward the windshield;
A first support that is provided on the arm shank side of the arm support and supports the flexible hose without having a tightening margin;
A wiper device comprising: a second support portion provided on the arm support side of the arm shank and supporting the flexible hose with a predetermined clamping allowance.   2. The wiper device according to claim 1, wherein the arm support side of the flexible hose is disposed at a predetermined distance in a radial direction from the output shaft so as to surround the output shaft, and the arm shank is disposed on the arm. The wiper device, wherein the arm support side of the flexible hose is close to the output shaft when the support is raised with respect to the support.   3. The wiper device according to claim 2, wherein the first support portion and the second support portion are provided by being offset to one side in a short direction of the arm support and the arm shank, and the arm support of the flexible hose. A wiper device characterized in that a side is provided so as to surround the output shaft from one side in the short direction of the arm support toward the other side.

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