JP2014227078A - Wiper device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten extra length of a hose in the surroundings of a support shaft while improving design capacity.SOLUTION: In a wiper device 10 for a vehicle, a pivot shaft 14 is inserted into a support hole 54 of a holder 50, and the holder 50 and the pivot shaft 14 are constituted so as to integrally rotate. Then, a bent nozzle side hose 29 is held by a holding part 56 of the holder 50. Thus, when an arm head 30 rotates by a fact that the pivot shaft 14 is rotated, the nozzle side hose 29 is rotated around a shaft center of the pivot shaft 14 with the holder 50. Moreover, the nozzle side hose 29 is held by the holding part 56 inside a skirt part 36 of the arm head 30 and outside a radial direction of the pivot shaft 14. Thus, the nozzle side hose 29 is arranged near the pivot shaft 14, and exposure of the nozzle side hose 29 from the skirt part 36 is suppressed in comparison with the case of holding the nozzle side hose 29 outside the skirt part 36.

Description

  The present invention relates to a vehicle wiper device.

  Some vehicle wiper devices are provided with a washer nozzle on a wiper arm. In such a vehicle wiper device, a hose connecting the washer nozzle and the washer tank is disposed along the wiper arm. For this reason, it is necessary to set the hose length to a length that suppresses generation of tensile force on the hose when the wiper arm swings. That is, it is necessary to suppress the generation of the tensile force by the extra length of the hose. However, if the extra length of the hose is set long, the extra length portion rubs against the vehicle body or abnormal noise is generated due to vibration. Therefore, it is desirable to set the extra length of the hose short.

  For example, in a vehicle wiper device described in Patent Document 1 below, a hose joint is fixed to a pivot holder that holds a pivot shaft, and a nozzle side hose and a tank side hose are connected to the hose joint. Thereby, since the connection part of a hose joint and a nozzle side hose is arrange | positioned in the vicinity of a pivot axis | shaft, the extra length of the periphery of the pivot axis | shaft in a nozzle side hose can be shortened.

JP 2004-291939 A

  However, in the above-described vehicle wiper device, the connection portion between the hose joint and the nozzle-side hose is disposed outside the base end portion (specifically, the skirt portion) of the arm head with respect to the pivot shaft. There is still room for improvement in the length of the hose. Further, since the hose joint is exposed from the base end portion of the arm head, there is room for improvement in the design performance of the vehicle wiper device.

  In view of the above-described facts, an object of the present invention is to provide a vehicle wiper device that can shorten the extra length of a hose around a support shaft while improving design performance.

  The wiper device for a vehicle according to claim 1, wherein a base end portion is fixed to a tip end portion of a support shaft rotatably provided on a vehicle body so as to be integrally rotatable, extends radially outward of the support shaft, and An arm head having a skirt covering the periphery of the shaft, and disposed along the longitudinal direction of the arm head, bent to the proximal end side of the support shaft in the skirt, and pumped with a cleaning liquid. A hose, an insertion portion that is formed in a cylindrical shape and into which the support shaft is inserted, and a holding portion that holds the hose inside the skirt portion and radially outside the support shaft, and And a holder configured to rotate integrally with the support shaft.

  In the vehicle wiper device according to the first aspect, the base end portion of the arm head is fixed to the distal end portion of the support shaft provided rotatably on the vehicle body so as to be integrally rotatable. The arm head has a skirt portion that extends radially outward of the support shaft and covers the periphery of the support shaft. A hose is disposed along the longitudinal direction of the arm head, and the hose is bent toward the base end side of the support shaft in the skirt portion.

  Here, a support shaft is inserted into an insertion portion formed inside a cylindrical holder, and the holder and the support shaft are configured to be integrally rotatable. And the hose is hold | maintained at the holding | maintenance part formed inside this holder. For this reason, when the arm head is rotated by rotating the support shaft, the hose is rotated together with the holder. And the hose is hold | maintained at the holding | maintenance part inside the skirt part and the radial direction outer side of the support shaft. For this reason, compared with the case where a hose is hold | maintained on the outer side of a skirt part, while the hose is arrange | positioned in the vicinity of a support shaft, the exposure from the skirt part of a hose is suppressed. Therefore, the extra length of the hose around the support shaft can be shortened while improving the design performance.

  The vehicle wiper device according to claim 2 is the vehicle wiper device according to claim 1, wherein the hose is held by the holding portion of the holder in a state where the hose is in contact with an outer peripheral portion of the support shaft. Yes.

  In the vehicle wiper device according to the second aspect, since the hose is in contact with the outer peripheral portion of the support shaft, the hose is disposed close to the support shaft. Thereby, the extra length of the hose around the support shaft can be further shortened.

  The vehicle wiper device according to claim 3 is the vehicle wiper device according to claim 1 or 2, wherein the holder is opened to the arm head side in a position adjacent to the holding portion. A concave guide portion communicated with the holding portion is formed, and the hose is disposed in the guide portion.

  In the vehicle wiper device according to the third aspect, the hose bent toward the base end side of the support shaft is disposed in the guide portion and guided to the holding portion by the guide portion. Thereby, it is possible to guide the hose to the holding portion side while bending the hose easily. Therefore, the assembly property of the hose can be improved.

  The vehicle wiper device according to claim 4 is the vehicle wiper device according to any one of claims 1 to 3, wherein the support shaft is rotatably supported by a cylindrical pivot holder. A pivot shaft, and the holder is disposed between the pivot holder and the arm head, and the side wall of the holder is opened to the outside in the radial direction of the pivot shaft and communicated with the holding portion. A hole is formed, and the hose held by the holding part extends from the insertion hole.

  In the vehicle wiper device according to the fourth aspect, the support shaft is a pivot shaft. The pivot shaft is rotatably supported by a cylindrical pivot holder, and the holder is disposed between the pivot holder and the arm head.

  Here, an insertion hole is formed in the side wall of the holder so as to open to the outside in the radial direction of the pivot shaft and communicate with the holding portion, and a hose held by the holding portion extends from the insertion hole. For this reason, since the said hose is extended to the radial direction outer side of a pivot axis | shaft (pivot holder) from an insertion hole, it can suppress that a hose interferes with a pivot holder. Thereby, rubbing between the hose and the pivot holder when the arm head rotates can be suppressed.

  The vehicle wiper device according to claim 5 is the vehicle wiper device according to any one of claims 1 to 3, wherein the support shaft is rotated integrally with the pivot shaft, and is connected to the pivot shaft. The holder has an eccentric shaft disposed at an eccentric position, and the outer peripheral surface of the holder is formed concentrically with the pivot shaft when viewed from the axial direction of the pivot shaft.

  In the vehicle wiper device according to the fifth aspect, the support shaft is an eccentric shaft. The eccentric shaft is arranged at a position eccentric with respect to the pivot shaft and is rotated integrally with the pivot shaft. For this reason, the insertion part of the holder is also arranged at a position eccentric with respect to the pivot shaft, and when the pivot shaft rotates, the eccentric shaft and the arm head rotate eccentrically with respect to the pivot shaft. Thereby, also in the vehicle wiper device provided with the arm head that rotates eccentrically with respect to the pivot shaft, the extra length of the nozzle side hose can be shortened.

  Further, the outer peripheral surface of the holder is formed concentrically with the pivot shaft when viewed from the axial direction of the pivot shaft. That is, the axis of the holder is coincident with the axis of the pivot shaft. For this reason, when the pivot shaft is rotated, the eccentric shaft rotates eccentrically with respect to the pivot shaft inside the holder, but the eccentric shaft is arranged at an eccentric position with respect to the pivot shaft, but rotates integrally with the pivot shaft. Therefore, the outer peripheral surface of the holder rotates while maintaining a concentric circle with respect to the pivot shaft. Thereby, even if the holder is provided on the eccentric shaft that is eccentric with respect to the pivot shaft, the shake of the outer peripheral surface of the holder during rotation of the holder can be suppressed. As a result, for example, the distance between the member disposed around the holder and the outer peripheral surface of the holder can be ensured to be constant.

  A vehicle wiper device according to a sixth aspect is the vehicle wiper device according to any one of the first to fifth aspects, wherein the hose is provided in a pair and arranged in the width direction of the arm head. In the base end portion of the arm head, the support shaft is disposed between the pair of hoses, and the hose is curved along the outer peripheral surface of the support shaft.

  The wiper device for a vehicle according to claim 6, wherein the pair of hoses arranged side by side in the width direction of the arm head are bifurcated at the base end portion of the arm head and supported between the pair of hoses. An axis is placed. Further, the bifurcated hose is curved along the outer peripheral surface of the support shaft. For this reason, even when the vehicle wiper device is constituted by a pair of hoses, the hose can be efficiently arranged around the support shaft, and the hose can be held by the holder.

It is sectional drawing (1-1 sectional view taken on the line of FIG. 2) which shows the base end part of the wiper apparatus for vehicles which concerns on 1st Embodiment. It is a perspective view which shows the base end part of the wiper apparatus for vehicles shown by FIG. FIG. 3 is an exploded perspective view of a base end portion of the vehicle wiper device shown in FIG. 2. It is the perspective view which looked at the base end part of the wiper device for vehicles shown in Drawing 2 from the base end side of a pivot axis. It is a perspective view which shows the holder shown by FIG. It is the top view seen from the tip side of the pivot axis which shows the wiper device for vehicles concerning a 1st embodiment. It is sectional drawing which shows the base end part of the wiper apparatus for vehicles which concerns on 2nd Embodiment. It is a disassembled perspective view in the base end part of the wiper apparatus for vehicles shown by FIG. It is a perspective view which shows the state by which the nozzle side hose was hold | maintained by the holder shown by FIG. It is a perspective view which shows the holder shown by FIG.

(First Embodiment)

  Hereinafter, the vehicle wiper device 10 according to the first embodiment will be described with reference to FIGS. As shown in FIG. 6, the vehicle wiper device 10 includes a substantially long wiper arm 12, and the wiper arm 12 has a “support” at its base end (the end on the arrow C direction side in FIG. 6). It is fastened and fixed to a pivot shaft 14 as an “axis”.

  As shown in FIG. 3, the pivot shaft 14 is formed in a substantially cylindrical shape and is rotatably supported by a substantially cylindrical pivot holder 22 fixed to a frame (not shown) of a vehicle (automobile). ing. A taper portion 16 and a male screw portion 18 are formed on an end portion (tip portion) on one axial side of the pivot shaft 14 (arrow A direction side in FIG. 3). The projection protrudes from the tip of the pivot holder 22 and the opening 70A (see FIG. 1) of the louver 70 of the vehicle. A serration is formed on the outer peripheral portion of the taper portion 16.

  On the other hand, a pivot lever 20 constituting a part of the link mechanism is coupled to an end portion (base end portion) on the other axial side of the pivot shaft 14 (arrow B direction side in FIG. 3). Is connected to a motor (not shown) via a link mechanism. The driving force of the motor is transmitted to the pivot shaft 14 via the link mechanism, so that the pivot shaft 14 is reciprocally rotated.

  Further, the pivot holder 22 is provided with a substantially plate-like plate portion 24 in the middle portion in the longitudinal direction, and the plate portion 24 is arranged with the plate thickness direction being the axial direction of the pivot shaft 14. The plate portion 24 is integrally formed with a pair of joint portions 26. The joint portion 26 is formed in a substantially cylindrical shape and is disposed in parallel with the pivot shaft 14. One end of a tank hose 28 is connected to the lower end of the joint 26, and the other end of the tank hose 28 is connected to a vehicle washer tank (not shown).

  As shown in FIG. 6, the wiper arm 12 includes an arm head 30, a retainer 40, and an arm piece 42. The arm head 30 is formed in a substantially rectangular column shape, and is made of, for example, aluminum die cast and is subjected to an alumite treatment or the like. As shown in FIG. 1, a fixing hole 32 is formed at the base end portion (the end portion in the direction of arrow C in FIG. 1) of the arm head 30, and the fixing hole 32 is coaxial with the pivot shaft 14. And a substantially conical shape corresponding to the tapered portion 16 of the pivot shaft 14. The taper portion 16 of the pivot shaft 14 is inserted into the fixing hole 32, and the pivot shaft 14 and the arm head 30 are serrated. Further, the male screw portion 18 of the pivot shaft 14 protrudes from the arm head 30, and a nut 38 is screwed into the male screw portion 18 so that the arm head 30 is fastened and fixed to the pivot shaft 14. As a result, the arm head 30 is rotated integrally with the pivot shaft 14.

  Further, the arm head 30 extends outward from the base end portion in the radial direction of the pivot shaft 14. As shown in FIG. 4, the rear surface of the arm head 30 (the surface on the wiping surface side of the windshield glass of the vehicle (the direction of the arrow B in FIG. 1)) accommodates a nozzle-side hose 29 described later. A housing portion 34 is formed. The housing portion 34 is formed in a concave shape opened to the wiping surface side of the windshield glass when viewed from the longitudinal direction of the arm head 30, and extends along the longitudinal direction of the arm head 30.

  Further, a skirt portion 36 is integrally formed at the base end portion of the arm head 30. The skirt portion 36 is formed in a cylindrical shape so as to cover the periphery of the pivot shaft 14 in a separated state, and protrudes from the arm head 30 to the proximal end side of the pivot shaft 14. It arrange | positions in the opening part 70A of the louver 70 (refer FIG. 1). The inside of the skirt portion 36 communicates with the inside of the housing portion 34 of the arm head 30, and the distal end portion of the pivot shaft 14 excluding the male screw portion 18 and the taper portion 16 is disposed in the skirt portion 36 and the housing portion 34. Has been.

  As shown in FIG. 6, the retainer 40 is formed in a substantially long shape, and has a substantially U-shape opened to the wiping surface side of the windshield glass of the vehicle in a cross-sectional view seen from the longitudinal direction. It is made. The proximal end portion of the retainer 40 is rotatably supported by the distal end portion of the arm head 30, and the retainer 40 extends from the distal end portion of the arm head 30. Further, an urging member (not shown) such as a tension coil spring is spanned between the retainer 40 (or an arm piece 42 described later) and the arm head 30, and the retainer 40 is windshielded by the urging member. It is biased toward the wiping surface side of the glass.

  The arm piece 42 is attached to the tip of the retainer 40 and extends to one side in the longitudinal direction of the wiper arm 12. Further, although not shown, a wiper blade 44 is connected to the arm piece 42 via a connecting member such as a clip. Thus, the wiper arm 12 is rotated so that the wiper surface of the windshield glass of the vehicle is wiped by the wiper blade 44.

  A washer nozzle 46 is provided at the distal end of the arm piece 42, and one end of a nozzle side hose 29 as a pair of “hose” is connected to the washer nozzle 46. The nozzle side hose 29 is disposed along the arm piece 42, the retainer 40, and the accommodating portion 34 of the arm head 30, and the other end portion of the nozzle side hose 29 is connected to the upper end portion of the joint portion 26 of the pivot holder 22. Are connected (see FIG. 4). As a result, the cleaning liquid in the washer tank is pumped through the tank-side hose 28 and the nozzle-side hose 29 and sprayed from the washer nozzle 46. The washer nozzle 46 is formed with injection holes (not shown) corresponding to the nozzle-side hoses 29, and cleaning liquid is injected into each injection hole by a vehicle control unit (not shown). The injection is controlled according to the direction.

  As shown in FIGS. 3 and 4, the pair of nozzle-side hoses 29 arranged in the housing portion 34 are arranged along the longitudinal direction of the arm head 30 in a state of being aligned in the width direction of the arm head 30. ing. The pair of nozzle-side hoses 29 are bifurcated so as to sandwich the distal end portion of the pivot shaft 14 at the base end portion of the arm head 30, and each nozzle-side hose 29 is formed on the outer peripheral portion of the pivot shaft 14. Is curved along. Further, the curved pair of nozzle-side hoses 29 are bent toward the base end side of the pivot shaft 14 (arrow B direction side in FIG. 3) on the base end side of the arm head 30 with respect to the axis of the pivot shaft 14. (See FIG. 3).

  Next, the holder 50 which is a main part of the present invention will be described.

  As shown in FIGS. 1 and 5, the holder 50 is made of a resin material, is formed in a substantially cylindrical shape, and is arranged with the axial direction of the pivot shaft 14. A flange portion 52 is integrally formed on the outer peripheral surface of the end portion on the one axial side (the direction of arrow A in FIG. 1) of the holder 50, and the flange portion 52 extends from the outer peripheral surface of the holder 50 to the holder 50. Projecting radially outward. In addition, a circular support hole 54 as an “insertion portion” is formed in the holder 50 in the axial direction of the holder 50. The support hole 54 is disposed at a position eccentric to the distal end side of the arm head 30 with respect to the axis of the holder 50, and the inner diameter of the support hole 54 is slightly smaller than the outer diameter of the pivot shaft 14. It is set large. Then, the tip end portion of the pivot shaft 14 is inserted into the support hole 54 (see FIG. 1), and the holder 50 is disposed between the arm head 30 and the pivot holder 22 in the skirt portion 36 of the arm head 30. ing.

  Further, as shown in FIG. 1, a flat washer 64 and a tee washer 66 are interposed between the end surface of the holder 50 on the other side in the axial direction (arrow B direction in FIG. 1) and the tip of the pivot holder 22. The nozzle hose 29 described above is interposed between the end face on the one axial side of the holder 50 and the arm head 30. The holder 50 is held between the nozzle-side hose 29 and the tea washer 66. Thereby, the movement of the holder 50 in the axial direction of the pivot shaft 14 is limited, and the holder 50 rotates integrally with the pivot shaft 14 and the arm head 30.

  Further, as shown in FIGS. 1 and 5, a holding portion 56 for holding the pair of nozzle-side hoses 29 is formed inside the holder 50. The holding portion 56 is formed in a concave shape opened to one axial direction of the holder 50 at a position radially outside the pivot shaft 14 (specifically, a position closer to the proximal end of the arm head 30 than the support hole 54). And communicated with the support hole 54. In addition, a pair of pressing portions 58 (see FIG. 5) is formed on the inner peripheral portion of the holding portion 56, and the pair of pressing portions 58 of the holder 50 are opposed to the outer peripheral surface of the pivot shaft 14. They are arranged side by side in the circumferential direction. Further, the presser portion 58 is formed in a substantially arc shape corresponding to the outer shape of the nozzle side hose 29 and protruding outward in the radial direction of the holder 50 when viewed from the axial direction of the holder 50. Accordingly, the pair of presser portions 58 are formed in a substantially M shape when viewed from the axial direction of the holder 50.

  In addition, an insertion hole 60 having a substantially rectangular cross section is formed in the outer peripheral wall of the holder 50 at a portion on the other side in the axial direction of the holder 50. The insertion hole 60 is disposed at a position corresponding to the holding portion 56, opened to the outside in the radial direction of the holder 50, and communicated with the inside of the holding portion 56. The nozzle hose 29 bent toward the base end side of the pivot shaft 14 is held by the holding portion 56. Specifically, each nozzle-side hose 29 is disposed between the presser portion 58 and the pivot shaft 14, and the outer peripheral portion of each nozzle-side hose 29 is slightly pressed toward the pivot shaft 14 by the presser portion 58, so that the nozzle The side hose 29 is in contact with the pivot shaft 14. Thereby, the width dimension of the holding part 56 is set so that the nozzle side hose 29 is arranged in the circumferential direction of the holder 50 in the holding part 56.

  Further, the nozzle-side hose 29 held by the holding portion 56 extends outward in the radial direction of the holder 50 (pivot shaft 14 and pivot holder 22) from the insertion hole 60 (see FIGS. 1, 2, and 4). ). The nozzle hose 29 extending from the insertion hole 60 to the outside of the holder 50 is curved so as to protrude outward in the radial direction of the pivot holder 22 and extends to the proximal end side of the pivot shaft 14. The other end portion of the nozzle side hose 29 is connected to the upper end portion of the joint portion 26.

  Further, as shown in FIG. 5, a pair of guide portions 62 are formed inside the holder 50, and the guide portions 62 are disposed adjacent to the holding portion 56 in the circumferential direction of the holder 50. Yes. The guide portion 62 is formed in a concave shape having a substantially triangular cross section, and is opened to one side in the axial direction of the holder 50 and communicated with the inside of the holding portion 56. Furthermore, the inner peripheral surface 62A of the guide portion 62 extends along the circumferential direction of the holder 50, and one end portion of the inner peripheral surface 62A is smoothly connected to the presser portion 58. On the other hand, the other end portion of the inner peripheral surface 62 </ b> A is bent inward in the radial direction of the holder 50 and connected to the inner peripheral surface of the support hole 54. Then, the nozzle side hose 29 disposed between the holder 50 and the arm head 30 is bent toward the proximal end side of the pivot shaft 14 at the edge of the other end side of the guide portion 62 and disposed in the guide portion 62. Has been. Furthermore, the nozzle side hose 29 disposed in the guide portion 62 is configured to be guided to the holding portion 56 side by the inner peripheral surface 62A of the guide portion 62 and the outer peripheral surface of the pivot shaft 14. Note that the arrows shown in FIG. 5 conceptually illustrate the arrangement direction of the nozzle side hose 29.

  Next, the operation and effect of the first embodiment will be described.

  In the vehicle wiper device 10 configured as described above, the base end portion of the arm head 30 is fixed to the distal end portion of the pivot shaft 14 so as to be integrally rotatable. Also, a skirt portion 36 is formed at the base end portion of the arm head 30, and the periphery of the distal end portion (portion excluding the taper portion 16 and the male screw portion 18) of the pivot shaft 14 is covered with the skirt portion 36. .

  A pair of nozzle-side hoses 29 are arranged along the longitudinal direction of the arm head 30 in a state in which the pair of nozzle-side hoses 29 are arranged in the width direction of the arm head 30 in the housing portion 34 of the arm head 30. One end of 29 is connected to the washer nozzle 46. Further, the pair of nozzle side hoses 29 are bent toward the proximal end side of the pivot shaft 14 at the proximal end portion of the arm head 30, and the other end portion of the nozzle side hose 29 is the upper end of the joint portion 26 of the pivot holder 22. Connected to the department. One end portion of the tank side hose 28 is connected to the lower end portion of the joint portion 26, and the other end portion of the tank side hose 28 is connected to the washer tank. As a result, the cleaning liquid in the washer tank is pumped through the tank-side hose 28 and the nozzle-side hose 29 and sprayed from the washer nozzle 46 to the wiping surface side of the windshield glass.

  Here, the tip end portion of the pivot shaft 14 is inserted into the support hole 54 of the holder 50, and the holder 50 and the pivot shaft 14 are configured to be integrally rotatable. The bent nozzle side hose 29 is held by the holding portion 56 of the holder 50. For this reason, when the arm head 30 is rotated by rotating the pivot shaft 14, the nozzle side hose 29 is rotated around the axis of the pivot shaft 14 together with the holder 50. Moreover, the nozzle-side hose 29 is held by the holding portion 56 inside the skirt portion 36 of the arm head 30 and outside in the radial direction of the pivot shaft 14. Therefore, as compared with the case where the nozzle side hose 29 is held outside the skirt portion 36, the nozzle side hose 29 is disposed in the vicinity of the pivot shaft 14, and the nozzle side hose 29 is not exposed from the skirt portion 36. It is suppressed. Therefore, the extra length of the nozzle hose 29 around the pivot shaft 14 can be shortened while improving the design performance of the vehicle wiper device 10.

  Further, the holding portion 56 of the holder 50 communicates with the support hole 54, and when the nozzle side hose 29 is held by the holding portion 56, the outer peripheral portion of the nozzle side hose 29 is pivoted by the pressing portion 58 of the holding portion 56. The nozzle side hose 29 is brought into contact with the pivot shaft 14 by being slightly pressed toward the shaft 14 side. For this reason, the nozzle side hose 29 is disposed close to the pivot shaft 14. Thereby, the extra length of the nozzle side hose 29 around the pivot shaft 14 can be further shortened.

  In addition, as described above, the nozzle side hose 29 is rotated together with the pivot shaft 14 together with the holder 50. Therefore, even if the nozzle side hose 29 is configured to contact the pivot shaft 14, the nozzle side hose 29 and the pivot hose 29 are pivoted. Rubbing with the shaft 14 can be suppressed.

  Further, a pair of guide portions 62 are disposed adjacent to the holding portion 56 in the circumferential direction of the holder 50. Further, the pair of guide portions 62 has a concave shape opened to the arm head 30 side (one axial direction side of the holder 50) and communicates with the holding portion 56. Then, the nozzle side hose 29 disposed in the accommodating portion 34 of the arm head 30 is bent toward the proximal end side of the pivot shaft 14 at the edge portion on the other end side of the guide portion 62, so that the inner periphery of the guide portion 62 is The surface 62A and the outer peripheral surface of the pivot shaft 14 are guided to the holding portion 56 side. For this reason, the nozzle side hose 29 can be favorably guided into the holding portion 56 while being easily bent toward the proximal end side of the pivot shaft 14. Thereby, the assembly | attachment property of the nozzle side hose 29 can be improved.

  An insertion hole 60 is formed in the outer peripheral wall of the holder 50, and the insertion hole 60 is opened to the radially outer side of the pivot shaft 14 (holder 50) and communicates with the inside of the holding portion 56. And the nozzle side hose 29 hold | maintained at the holding | maintenance part 56 is extended from the penetration hole 60 to the radial direction outer side of the holder 50 (pivot holder 22). For this reason, the nozzle side hose 29 extended from the insertion hole 60 is curved so as to protrude outward in the radial direction of the pivot holder 22 (in a direction away from the pivot holder 22) and toward the proximal end side of the pivot shaft 14. Since it extends, it can suppress that the nozzle side hose 29 interferes with the pivot holder 22. Thereby, rubbing between the nozzle side hose 29 and the pivot holder 22 during rotation of the arm head 30 can be suppressed.

  In addition, the pair of nozzle-side hoses 29 disposed in the housing portion 34 of the arm head 30 are arranged along the longitudinal direction of the arm head 30 in a state of being aligned in the width direction of the arm head 30. The pair of nozzle-side hoses 29 are bifurcated so as to sandwich the distal end portion of the pivot shaft 14 at the base end portion of the arm head 30, and each nozzle-side hose 29 is formed on the outer peripheral portion of the pivot shaft 14. Is curved along. For this reason, even when the vehicle wiper device 10 is configured by a pair of nozzle-side hoses 29, the nozzle-side hose 29 can be efficiently arranged around the pivot shaft 14, and the nozzle-side hose 29 can be held by the holder 50. .

(Second Embodiment)

  Hereinafter, the vehicle wiper device 100 according to the second embodiment will be described with reference to FIGS. 7 to 10. The vehicle wiper device 100 is configured in the same manner as the vehicle wiper device 10 of the first embodiment except for the following points.

  That is, as shown in FIG. 7, the vehicle wiper apparatus 100 includes an upper shaft 102, and the upper shaft 102 is not shown in FIG. 7, and the axis of the pivot shaft 14 has an axis center. (Denoted as 14 </ b> A) and the arm head 30. The upper shaft 102 includes a base portion 104 that constitutes a lower portion of the upper shaft 102 (portion in the direction of arrow B in FIG. 7). The base portion 104 is formed in a substantially rectangular parallelepiped shape, It is connected so that it can rotate integrally. Further, the upper portion of the upper shaft 102 (the portion on the arrow A direction side in FIG. 7) is a shaft portion 106 as a substantially cylindrical “eccentric shaft”. The shaft portion 106 is disposed in parallel with the axis 14A of the pivot shaft 14 and extends from the base portion 104 to the arm head 30 side. Further, the shaft portion 106 is disposed at a position eccentric to the distal end side (the arrow D direction side in FIG. 7) of the arm head 30 with respect to the axis 14 </ b> A of the pivot shaft 14. In the second embodiment, the shaft portion 106 corresponds to the “support shaft” of the present invention. Further, a tapered portion 108 and a male screw portion 110 are formed at the distal end portion of the shaft portion 106 similarly to the pivot shaft 14 of the first embodiment.

  In addition, a concave fixing recess 112 that is open to one axial direction of the pivot shaft 14 is formed at the base end of the arm head 30, and a fixing hole 32 is formed in the bottom wall of the fixing recess 112. . The tapered portion 108 of the shaft portion 106 is inserted into the fixing hole 32, the male screw portion 110 is disposed in the fixing recess 112, and the nut 38 is screwed to the male screw portion 110. Thus, in the second embodiment, the upper shaft 102 and the arm head 30 are configured to rotate eccentrically with respect to the pivot shaft 14 when the pivot shaft 14 is rotated about its own axis.

  The holder 50 is disposed between the base portion 104 of the upper shaft 102 and the arm head 30 in the skirt portion 36 of the arm head 30. The tip portion (the portion excluding the taper portion 108 and the male screw portion 110) of the shaft portion 106 of the upper shaft 102 is inserted into the support hole 54 of the holder 50. Further, in the second embodiment, the flat washer 64 and the tea washer 66 in the first embodiment are omitted, and the holder 50 is held between the base portion 104 of the upper shaft 102 and the nozzle side hose 29. It is configured to be.

  Further, as shown in FIG. 10, the holding portion 56 of the holder 50 is penetrated in the axial direction of the holder 50, so that the insertion hole 60 of the holder 50 is radially outside of the holder 50 and the holder 50. Is open to the other side in the axial direction. For this reason, the nozzle side hose 29 held by the holder 50 extends from the insertion hole 60 of the holder 50 to the base portion 104 side along the outer peripheral surface of the shaft portion 106 (see FIG. 9).

  Further, the axis of the holder 50 coincides with the axis of the pivot shaft 14. That is, the outer peripheral surface of the holder 50 is formed concentrically with the pivot shaft 14 when viewed from the axial direction of the holder 50.

  As shown in FIG. 8, the vehicle wiper device 100 includes a rubber seal member 114. The seal member 114 is formed in a shallow container shape opened to the arm head 30 side and is fixed to the louver 70. In addition, a part of the peripheral wall portion of the seal member 114 is cut out, and this portion serves as a discharge portion 116.

  Further, a cylindrical portion 118 is integrally formed at the central portion of the seal member 114. The cylindrical portion 118 protrudes from the seal member 114 toward the arm head 30 side, and is set so that the diameter dimension of the cylindrical portion 118 becomes smaller toward the arm head 30 side. A cylindrical seal flange portion 120 is integrally formed at the end of the tube portion 118 on the arm head 30 side, and the seal flange portion 120 protrudes from the tube portion 118 toward the arm head 30 side. As shown in FIG. 7, the inner diameter of the seal flange portion 120 is set slightly larger than the outer diameter of the holder 50, and the holder 50 is coaxially disposed in the seal flange portion 120. A lubricant such as grease is applied between the inner peripheral surface of the seal flange portion 120 and the outer peripheral surface of the holder 50. Further, the flange portion 52 of the holder 50 is installed on the front end surface of the seal flange portion 120, and the seal flange portion 120 is disposed in the skirt portion 36 of the arm head 30. Thereby, the sealing performance between the holder 50 and the sealing member 114 is ensured, and rainwater or the like is prevented from entering the skirt portion 36 or the cylindrical portion 118 of the sealing member 114. .

  In the second embodiment, when the pivot shaft 14 is rotated about its own axis, the shaft portion 106 of the upper shaft 102 and the arm head 30 are eccentrically rotated with respect to the pivot shaft 14. At this time, the nozzle side hose 29 and the holder 50 are rotated together with the shaft portion 106. Moreover, since the holder 50 is disposed in the skirt portion 36 of the arm head 30, the nozzle side hose 29 held by the holding portion 56 of the holder 50 is also disposed in the skirt portion 36. For this reason, except for suppressing interference between the nozzle-side hose 29 and the pivot holder 22 in the first embodiment, the second embodiment has the same operations and effects as the first embodiment. Play.

  In the second embodiment, as described above, the shaft portion 106 of the upper shaft 102 is eccentric with respect to the pivot shaft 14, and when the pivot shaft 14 rotates about its own axis, the shaft portion 106 is rotated. The arm head 30 rotates eccentrically with respect to the pivot shaft 14. Thereby, also in the vehicle wiper apparatus 100 provided with the arm head 30 eccentrically rotated with respect to the pivot shaft 14, the extra length of the nozzle side hose 29 can be shortened.

  Further, the outer peripheral surface of the holder 50 is formed concentrically with the pivot shaft 14 when viewed from the axial direction of the holder 50. For this reason, when the pivot shaft 14 rotates, the shaft portion 106 of the upper shaft 102 rotates eccentrically with respect to the pivot shaft 14 inside the holder 50, but the shaft portion 106 is disposed at a position eccentric with respect to the pivot shaft 14. However, the outer peripheral surface of the holder 50 rotates while maintaining a concentric circle with respect to the pivot shaft 14. Thereby, when the holder 50 rotates, the outer peripheral surface of the holder 50 is prevented from swinging, and the sliding contact with the inner peripheral surface of the seal flange portion 120 can be stabilized. Therefore, even if the holder 50 is provided on the shaft portion 106 that is eccentric with respect to the pivot shaft 14, the space between the holder 50 and the seal member 114 can be satisfactorily sealed.

  In the first embodiment and the second embodiment, the support hole 54 of the holder 50 and the holding portion 56 are communicated with each other. Instead of this, a wall may be provided between the support hole 54 and the holding portion 56 to partition the support hole 54 and the holding portion 56.

  In the first and second embodiments, the pair of guide portions 62 are formed in the holder 50 in a concave shape, and the bottom surface of the guide portion 62 is perpendicular to the axial direction of the holder 50. Are arranged along. Instead of this, the bottom surface of the guide portion 62 may be disposed so as to be inclined toward the other side in the axial direction of the holder 50 toward the holding portion 56 side in the circumferential direction of the holder 50. Further, the guide portion 62 may be formed through the holder 50 in the axial direction.

  Furthermore, in the first embodiment and the second embodiment, the pair of guide portions 62 are formed on the holder 50, but the pair of guide portions 62 may be omitted.

  In the first embodiment, the pair of presser portions 58 in the holding portion 56 of the holder 50 are integrally formed. Instead of this, a pair of communication between the inside of the holding portion 56 and the outside of the holder 50 may be formed between the pair of presser portions 58 to separate the pair of presser portions 58. Thereby, since the press part 58 is comprised like a cantilever, the nozzle side hose 29 can be hold | maintained using the elastic force of the press part 58. FIG. Further, since the displacement amount of the presser portion 58 can be increased, the assembling property of the nozzle side hose 29 into the holding portion 56 can be improved. In this case, the holder 50 is formed in a cylindrical shape that is partially opened in the radial direction of the holder 50. For this reason, the “cylindrical shape” in the present invention includes a cylindrical shape partially opened in the radial direction of the holder 50.

  Further, in the first embodiment and the second embodiment, the vehicle wiper devices 10 and 100 are configured by a pair of nozzle side hose 29 and tank side hose 28. Instead of this, the vehicle wiper devices 10 and 100 may be configured by a single nozzle-side hose 29 and a tank-side hose 28.

DESCRIPTION OF SYMBOLS 10 ... Wiper apparatus for vehicles, 14 ... Pivot shaft (support shaft), 22 ... Pivot holder, 29 ... Nozzle side hose (hose), 30 ... Arm head, 36 ... Skirt 50, holder, 54, support hole (insertion portion), 56, holding portion, 60, insertion hole, 62, guide portion, 100, wiper device for vehicle, 106 ... Shaft parts (eccentric shafts, support shafts)

Claims (6)

An arm head having a skirt portion that is fixed to a distal end portion of a support shaft rotatably provided on the vehicle body so as to be integrally rotatable, extends radially outward of the support shaft, and covers the periphery of the support shaft; ,
A hose which is disposed along the longitudinal direction of the arm head, is bent toward the proximal end side of the support shaft in the skirt portion, and the cleaning liquid is pumped inside.
An insertion portion that is formed in a cylindrical shape and into which the support shaft is inserted, and a holding portion that holds the hose on the inside of the skirt portion and on the radially outer side of the support shaft, and the support shaft A holder configured to be integrally rotatable;
Wiper apparatus for vehicles provided with.   The vehicle wiper device according to claim 1, wherein the hose is held by the holding portion of the holder in a state where the hose is in contact with an outer peripheral portion of the support shaft. Inside the holder, a concave guide portion that is open to the arm head side and communicated with the holding portion is formed at a position adjacent to the holding portion,
The vehicle wiper device according to claim 1, wherein the hose is disposed in the guide portion. The support shaft is a pivot shaft rotatably supported by a cylindrical pivot holder, and the holder is disposed between the pivot holder and the arm head,
An insertion hole is formed in the side wall of the holder so as to open radially outward of the pivot shaft and communicate with the holding portion, and the hose held by the holding portion extends from the insertion hole. The vehicle wiper device according to any one of claims 1 to 3. The support shaft is an eccentric shaft that is rotated integrally with the pivot shaft and disposed at an eccentric position with respect to the pivot shaft,
4. The vehicle wiper device according to claim 1, wherein an outer peripheral surface of the holder is formed concentrically with the pivot shaft when viewed from an axial direction of the pivot shaft. A pair of the hoses are provided and arranged side by side in the width direction of the arm head,
The base end portion of the arm head includes the support shaft disposed between the pair of hoses, and the hose is curved along the outer peripheral surface of the support shaft. The vehicle wiper device according to Item.

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