JP4755116B2 - Wiper device - Google Patents

Description

  The present invention relates to a wiper device suitable for wiping a wiping surface such as a windshield of a vehicle using a pair of wipers.

As a wiper device for wiping a wiping surface of a windshield of a vehicle, for example, as shown in Patent Document 1, a tandem type wiper device is known that includes a pair of wipers and the wiping directions of these wipers are set in the same direction. ing. In such a tandem type wiper device, at the stop position, the wiper blade of each wiper stops at the lower reversing position (position substantially parallel to the vehicle width direction) of the reciprocating wiping operation, or lower than the lower reversing position. Generally, it is stopped at a storage position set separately.
Japanese Patent Laid-Open No. 11-43019

  However, in the wiper device as described above, when the wiper is stopped, each wiper has an independent presence, and the wiper portion is cluttered. Therefore, it cannot be said that the appearance of the vehicle in the wiper portion is good.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wiper device that can reduce the clutter of the wiper portion and improve the appearance of the vehicle.

  In order to solve the above-mentioned problem, the invention according to claim 1 is directed to a wiper arm in which an arm member is rotatably connected to an arm head fixed to a pivot shaft, and connected to a distal end portion of the arm member. A tandem type wiper device comprising a pair of wipers configured using a wiper blade for wiping a wiping surface of a vehicle, wherein the wiping directions of the first and second wipers are set in the same direction In this case, an overlapping portion is formed in which the distal end side of the wiper arm of the first wiper and the proximal end side of the wiper arm of the second wiper are overlapped in the height direction, and an external shape continuous in the longitudinal direction is formed across the two wiper arms. The gist is to be done.

  In the present invention, at the stop position of the tandem type wiper device, the distal end side of the wiper arm of the first wiper and the proximal end side of the wiper arm of the second wiper overlap in the height direction at the overlapping portion, and extend longitudinally across both wiper arms. Appearance shape is continuous in the direction. As a result, the first and second wipers become an integrated external shape without being independent of each other, and the clutter of the wiper portion is reduced, the presence of the wiper with respect to the vehicle is reduced, and the appearance of the vehicle can be improved.

  According to a second aspect of the present invention, in the wiper device according to the first aspect, the overlapping portion is configured such that the distal end side of the wiper arm of the first wiper overlaps the upper side of the proximal end side of the wiper arm of the second wiper. The gist of this is

  In the present invention, the overlapping portion is configured such that the distal end side of the wiper arm of the first wiper overlaps the upper side of the proximal end side of the wiper arm of the second wiper. That is, since the base end side of the wiper arm is a portion fixed to the pivot shaft of the vehicle, the wiper arm of the second wiper whose base end side is an overlapping portion is arranged on the lower side, so that the pivot for the second wiper Interference between the shaft and the wiper arm of the first wiper is prevented, and the overlapping portion can be simply configured.

  According to a third aspect of the present invention, in the wiper device according to the first or second aspect, the overlapping portion is configured such that a distal end side of the wiper arm of the first wiper overlaps an arm head of the wiper arm of the second wiper. The gist of this is.

  In the present invention, the overlapping portion is configured such that the distal end side of the wiper arm of the first wiper overlaps the arm head of the wiper arm of the second wiper. In other words, the arm head of the wiper arm is fixed to the pivot shaft, while the arm member of the wiper arm can be rotated with respect to the arm head, so that the overlapping portion is set by the arm head that does not move in the direction of contacting or separating from the wiping surface. Thus, the gap in the height direction of the overlapping portion can be made as small as possible.

  According to a fourth aspect of the present invention, in the wiper device according to any one of the first to third aspects, the overlapping portion is configured such that the upper surface of the wiper arm of each wiper is flush with the upper surface. The gist.

  In the present invention, the overlapping portion is configured so that the upper surfaces of the wiper arms of the wipers are flush with each other. Thereby, each wiper becomes a more integrated external shape without a step, and the appearance of the vehicle can be further improved.

  According to a fifth aspect of the present invention, in the wiper device according to the fourth aspect, the wiper arm of each wiper has a facing surface facing in the longitudinal direction, and each facing surface in the stop position is The gist of the invention is that the first wiper side has an undercut shape in the starting direction of each wiper and the second wiper side has an upper cut shape and is inclined with respect to the longitudinal direction of the wiper arm.

  In this invention, each opposing surface in the stop position of each wiper is inclined with respect to the longitudinal direction of the wiper arm, and the first wiper side is undercut in the starting direction of each wiper and the second wiper side is an upper cut. It is made into a shape. Thereby, the gap between the opposing surfaces can be made as small as possible without interfering with the longitudinally facing portion of each wiper, and the appearance of the gap portion can be improved.

  According to a sixth aspect of the present invention, in the wiper device according to any one of the first to fifth aspects, the wiper blade of the first wiper is on the start direction side of the wiper arm of the first wiper at the stop position. The gist is that they are arranged in parallel.

  In this invention, since the wiper blade of the first wiper is arranged in parallel on the side of the starting direction side of the wiper arm of the first wiper at the stop position, the wiper arm of the first wiper and the wiper arm of the second wiper are integrated. Even when the wiping operation is stopped, the wiper blade of the first wiper does not hinder the operation even when the external shape is stopped.

  A seventh aspect of the present invention is the wiper device according to any one of the first to sixth aspects, wherein the stop position is a storage position that is set separately from a lower reverse position of the reciprocating wiping operation of each wiper. The gist of the invention is that each wiper is configured to overlap in the overlapping portion at the storage position.

  In the present invention, when each wiper is disposed at a storage position that is set separately from the lower inversion position of the reciprocating wiping operation, overlapping occurs at the overlapping portion. That is, since each wiper in the reciprocating wiping operation is likely to be displaced, it is possible to prevent each wiper from colliding with the overlapping portion during the wiping operation.

  Therefore, according to the above described invention, it is possible to provide a wiper device that can reduce the clutter of the wiper portion and improve the appearance of the vehicle.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a wiper device 10 of the present embodiment. The wiper device 10 according to the present embodiment includes a pair of wipers 11 and 21 for wiping the wiping surface 1a of the windshield 1 of the vehicle, and the wiping directions of the wipers 11 and 21 are set in the same direction. The wiper device. The wiper 11 on the driver's seat side is the wiper 11, and the pivot shaft 2 on the driver's seat side that supports the wiper 11 is disposed on one side in the vehicle width direction. Further, the wiper 21 on the passenger seat side is the wiper 21, and the pivot shaft 3 on the passenger seat side that supports the wiper 21 is disposed substantially at the center in the vehicle width direction. The wipers 11 and 21 on the driver seat side and the passenger seat side are respectively connected to wiper arms 12 and 22 whose base end portions are fixed to the corresponding pivot shafts 2 and 3, and distal ends of the wiper arms 12 and 22, respectively. It is comprised from the wiper blades 13 and 23 which wipe 1a.

  The wiper arm 12 of the wiper 11 on the driver's seat side has a slightly square shape and the base end is fixed to the pivot shaft 2, and the base end is pivoted to the tip of the arm head 15. The retainer 16 is connected to the retainer 16 and the arm piece 17 is fixed to the retainer 16 and extends in an L shape from the tip side. The retainer 16 and the arm piece 17 constitute an arm member. The retainer 16 has a U-shaped cross-section with an opening on the lower side (wiping surface 1a side), and a biasing spring (not shown) that biases the tip of the wiper arm 12 (arm piece 17) toward the wiping surface 1a. Is housed. A wiper blade 13 is connected to the tip of the arm piece 17. Incidentally, the wiper blade 13 supports a blade rubber 13b (FIG. 2B) for wiping the wiping surface 1a by a holding claw 13a of a lever member connected to the arm piece 17, and the lever member It is configured to be covered with a cover 13c.

  The wiper arm 22 of the wiper 21 on the passenger seat side is substantially straight and has a base end portion fixed to the pivot shaft 3 and is slightly curved so that the base end portion can turn to the front end portion of the arm head 25. The retainer 26 is connected, and the arm piece 27 is fixed to the retainer 26 and extends linearly along the extending direction of the retainer 26 from the distal end portion thereof. The retainer 26 and the arm piece 27 constitute an arm member. Similarly, the retainer 26 has a U-shaped cross-section with an opening on the lower side (wiping surface 1a side), and a biasing spring (illustrated) that biases the tip of the wiper arm 22 (arm piece 27) toward the wiping surface 1a. Is omitted). A wiper blade 23 is connected to the tip of the arm piece 27, and the wiper blade 23 is similarly a blade for wiping the wiping surface 1 a with a holding claw (not shown) of a lever member connected to the arm piece 27. While supporting a rubber (not shown), the lever member is covered with a cover 23c.

  Here, as shown in FIG. 1A, the wiper blades 13 and 23 of the wipers 11 and 21 are moved by the reciprocating rotation of the pivot shafts 2 and 3 based on the operation of the wiper motor (not shown). The reciprocating wiping operation is performed in a predetermined angle range from the lower inversion position P1 arranged along the vehicle width direction to the upper inversion position P2 arranged along the direction orthogonal to the vehicle width direction. Incidentally, the lower inversion position P1 is also a stop position when the wipers 11 and 21 are intermittently operated. On the other hand, when the wipers 11 and 21 are not in operation, as shown in FIG. 1B, the wiper blades 13 and 23 of the wipers 11 and 21 are separately set below the windshield 1 from the lower inversion position P1. Is placed at the storage position P0. That is, when the wipers 11 and 21 are not operated, the wiper blades 13 and 23 are disposed at the storage position P0. When the wipers 11 and 21 are operated, the wiper blades 13 and 23 are moved downward from the storage position P0. It moves to the reversal position P1, and a reciprocating wiping operation is performed between the lower reversal position P1 and the upper reversal position P2. When the operations of the wipers 11 and 21 are stopped, the wiper blades 13 and 23 are moved from the lower inversion position P1 to the storage position P0.

  When the wiper blades 13 and 23 are arranged at the storage position P0, the wiper arm 12 of the wiper 11 on the driver's seat side and the wiper arm 22 of the wiper 21 on the passenger's seat side have a substantially straight continuous shape. As shown, the retainer 16 of the wiper arm 12 on the driver's seat side is configured to overlap the arm head 25 of the wiper arm 22 on the passenger seat side in the height direction (the direction perpendicular to the wiping surface 1a or the axial direction of the pivot shafts 2 and 3). Has been.

  Specifically, as shown in FIGS. 2 (a) and 2 (b), the arm head 25 on the passenger seat side has a lower portion on the base end side as a retainer arrangement portion with a stepped portion 25a provided at a substantially central portion in the longitudinal direction as a boundary. 25b, and a high portion on the tip side is a tip bulging portion 25c. A front end cover portion 16a of the retainer 16 on the driver's seat side is disposed above the retainer arrangement portion 25b at the base end of the arm head 25. The upper surface 16b of the retainer 16 and the upper surface 25d of the front end bulging portion 25c of the arm head 25 are provided. Thus, an overlapping portion of the wiper arm 12 on the driver's seat side and the wiper arm 22 on the passenger seat side is configured. The upper surface 25d of the tip bulging portion 25c of the arm head 25 is flush with the upper surface 26a of the passenger seat side retainer 26.

  Thus, when viewed from above in the direction orthogonal to the wiping surface 1a (the axial direction of the pivot shafts 2 and 3), the appearance is such that the wiper arm 12 on the driver's seat side is continuously connected to the wiper arm 22 on the front passenger seat side. In addition to the shape, when viewed from the side of each wiper arm 12, 22, the external wiper arm 12, 22 is continuously connected. Incidentally, when the wiper arm 12 on the driver's seat side and the wiper arm 22 on the passenger seat side overlap each other, the wiper blade 13 on the driver's seat side is positioned on the side of the overlapping portion (wiping start direction) along the longitudinal direction of the wiper arms 12 and 22. It is arranged in parallel at close positions on the side and side.

  Further, the longitudinal end surface 16c of the retainer 16 and the step surface 25e of the arm head 25 at the overlapping portion are parallel to each other at the storage position P0 which is the stop position, and the starting directions of the wipers 11 and 21 are also set. The undercut shape and the upper cut shape are linearly inclined with respect to the longitudinal direction of the wiper arms 12 and 22, respectively. This prevents the retainer 16 and the arm head 25 from interfering with each other when the wipers 11 and 21 operate from the lower inversion position P1 to the storage position P0 that is the stop position, or vice versa. The gap S between the opposing surfaces 16b and 25e can be made as small as possible, and the appearance of the gap S is improved.

Next, characteristic actions and effects of the present embodiment will be described.
(1) The wiper device 10 according to the present embodiment is arranged at the retracted position P0. The wiper arm 12 of the wiper 11 on the driver's seat side (the front end cover portion 16a of the retainer 16) and the front passenger seat side The base end side of the wiper arm 22 of the wiper 21 (the retainer arrangement portion 25b of the arm head 25) constitutes an overlapping portion that overlaps in the height direction, and has an external shape that continues in the longitudinal direction across the wiper arms 12, 22. Is done. As a result, the wipers 11 and 21 on the driver's seat side and the passenger's seat side are integrated with each other without being independent of each other, and the presence of the wipers 11 and 21 with respect to the vehicle is reduced. And the appearance of the vehicle can be improved.

  (2) In the present embodiment, the overlapping portion is configured such that the distal end side of the wiper arm 12 on the driver's seat side overlaps the upper side on the proximal end side of the wiper arm 22 on the passenger seat side. That is, since the base end side of the wiper arms 12 and 22 is a portion fixed to the pivot shafts 2 and 3 of the vehicle, the wiper arm 22 on the passenger seat side whose base end side is an overlapping portion is disposed on the lower side. Interference between the pivot shaft 3 on the passenger seat side and the wiper arm 12 on the driver seat side is prevented, and the overlapping portion can be configured simply.

  (3) In the present embodiment, the overlapping portion is configured so that the front end side of the wiper arm 12 on the driver's seat side overlaps the arm head 25 of the wiper arm 22 on the passenger seat side. That is, while the arm head 25 of the wiper arm 22 is fixed to the pivot shaft 3, the retainer 26 of the wiper arm 22 is rotatable with respect to the arm head 25, so that the arm head 25 that does not move in the direction of contacting and separating from the wiping surface 1 a. By setting the overlapping portion, the gap in the height direction of the overlapping portion can be reduced as much as possible.

  (4) In the present embodiment, the upper surface 16b of the retainer 16 of the wiper arm 12 on the driver's seat side, the upper surface 25d of the tip bulging portion 25c of the arm head 25 on the passenger seat side, and the upper surface 26a of the retainer 26 are flush with each other. The overlapping portion is formed. As a result, the wipers 11 and 21 have a more integrated appearance with no steps, thereby further improving the appearance of the vehicle.

  (5) In the present embodiment, the opposing surfaces of the front end surface 16c of the retainer 16 on the driver's seat side and the stepped surface 25e of the arm head 25 on the passenger seat side are the starting directions of the wipers 11 and 21 on the front end surface 16c side. The undercut shape and the stepped surface 25e side are an upper cut shape in the starting direction of the wipers 11 and 21, and are inclined with respect to the longitudinal direction of the wiper arms 12 and 22. Thus, the gap S between the tip surface 16c and the step surface 25e can be made as small as possible without interference between the tip surface 16c of the retainer 16 and the step surface 25e of the arm head 25, and the appearance of this gap S portion is improved. Can do.

  (6) In the present embodiment, since the wiper blade 13 on the driver's seat side is arranged in parallel on the side of the wiper arm 12 in the starting direction, the wiper arms 12 and 22 on the driver's seat side and the passenger seat side are integrated in appearance. Even when stopped in the shape, the wiper blade 13 on the driver's seat side does not hinder the operation during the wiping start operation.

  (7) When the wipers 11 and 21 of the present embodiment are arranged at the storage position P0 that is set separately from the lower inversion position P1 of the reciprocating wiping operation, the overlapping portions are configured to overlap. That is, the wipers 11 and 21 in the reciprocating wiping operation are likely to be misaligned, so that the wipers 11 and 21 can be prevented from colliding with each other during the wiping operation.

The embodiment of the present invention may be modified as follows.
In the above-described embodiment, the overlapping portion is configured such that the front end side of the wiper arm 12 on the driver's seat side overlaps the upper side of the base end side of the wiper arm 22 on the passenger seat side, but the overlapping may be reversed.

  In the above embodiment, the overlapping portion is configured such that the front end side of the wiper arm 12 on the driver's seat side overlaps the arm head 25 of the wiper arm 22 on the passenger seat side, but the configuration of the overlapping portion is not limited to this, for example, the driver's seat The front end side of the wiper arm 12 on the side may overlap with the arm head 25 and the retainer 26 of the wiper arm 22 on the passenger seat side.

  In the above embodiment, the upper surface 16b of the retainer 16 of the wiper arm 12 on the driver's seat side, the upper surface 25d of the tip bulging portion 25c of the arm head 25 on the passenger seat side, and the upper surface 26a of the retainer 26 overlap. Although the part was comprised, the site | part made flush is not restricted to this. Moreover, it does not need to be flush.

  In the above embodiment, the opposing surfaces of the front end surface 16c of the retainer 16 on the driver's seat side and the step surface 25e of the arm head 25 are linearly inclined with respect to the longitudinal direction of the wiper arms 12 and 22, For example, a curved shape may be used. In addition, the opposing surfaces may not be inclined with respect to the longitudinal direction of the wiper arms 12 and 22, but may be opposing surfaces along a direction orthogonal to the longitudinal direction of the wiper arms 12 and 22, for example.

  In the above embodiment, the wiper blade 13 on the driver's seat side is disposed on the side of the overlapping portion of the wiper arms 12 and 22, but the overlapping portion may be configured including the wiper blade 13 on the driver's seat side.

  In the above embodiment, when the wipers 11 and 21 are arranged at the storage position P0, an overlap occurs at the overlapping portion. However, in the wiper device in which the storage position P0 is not set, the wiper device at the lower inversion position P1. It is good also as a structure which overlaps.

  In the above embodiment, the arm member formed by fixing the separate arm pieces 17 and 27 to the retainers 16 and 26 is used, but an arm member in which the retainer and the arm piece portion are integrally formed may be used. .

(A) is a figure when the wiper of this Embodiment is arrange | positioned in a lower inversion position, (b) is a figure when a wiper is arrange | positioned in a storing position. (A) is the figure seen from the upper part of the overlapping part of a wiper, (b) is the figure seen from the side of the overlapping part of a wiper.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a ... Wiping surface, 2 ... Pivot axis | shaft, 3 ... Pivot axis | shaft, 11 ... Wiper of the driver's seat side as a 1st wiper, 12 ... Wiper arm, 13 ... Wiper blade, 15 ... Arm head, 16 ... Retainer which comprises arm member , 16a ... a tip cover portion constituting an overlapping portion, 16b ... an upper surface, 16c ... a tip surface as an opposing surface, 17 ... an arm piece constituting an arm member, 21 ... a wiper on the passenger seat side as a second wiper, 22 ... Wiper arm, 23 ... wiper blade, 25 ... arm head, 25b ... retainer arrangement portion constituting overlapping portion, 25d ... upper surface, 25e ... step surface as an opposing surface, 26 ... retainer constituting arm member, 26a ... upper surface, 27 ... arm piece constituting arm member, P0 ... storage position (stop position).

Claims (7)

The wiper arm is configured such that the arm member is rotatably connected to the arm head fixed to the pivot shaft, and the wiper blade is connected to the tip of the arm member and wipes the wiping surface of the vehicle. A tandem type wiper device comprising a pair of wipers, wherein the wiping directions of the first and second wipers are set in the same direction,
In the stop position, there is an overlapping portion in which the distal end side of the wiper arm of the first wiper and the proximal end side of the wiper arm of the second wiper overlap in the height direction, and the external shape is continuous in the longitudinal direction across both wiper arms A wiper device comprising: The wiper device according to claim 1,
The wiper device, wherein the overlapping portion is configured such that a distal end side of the wiper arm of the first wiper overlaps an upper side of a proximal end side of the wiper arm of the second wiper. The wiper device according to claim 1 or 2,
The wiper device, wherein the overlapping portion is configured such that a tip end side of the wiper arm of the first wiper overlaps an arm head of the wiper arm of the second wiper. The wiper device according to any one of claims 1 to 3,
The wiper device characterized in that the overlapping portion is configured such that the upper surfaces of the wiper arms of the respective wipers are flush with each other. The wiper device according to claim 4, wherein
The wiper arm of each wiper has a facing surface facing in the longitudinal direction,
The opposing surfaces at the stop position are inclined with respect to the longitudinal direction of the wiper arm, with the first wiper side having an undercut shape and the second wiper side having an upper cut shape in the starting direction of each wiper. A wiper device characterized by that. In the wiper device according to any one of claims 1 to 5,
The wiper device according to claim 1, wherein the wiper blades of the first wiper are arranged in parallel on the side in the starting direction of the wiper arm of the first wiper at the stop position. The wiper device according to any one of claims 1 to 6,
The stop position is a storage position that is set separately from the lower inversion position of the reciprocating wiping operation of each wiper, and at the storage position, the wipers are configured to overlap in the overlapping portion. Wiper device characterized by.

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