JP2018090000A - Wiper arm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper arm capable of stably holding a hose during driving.SOLUTION: A semi-pantograph type wiper arm 1 includes: a main arm 2 which has a base end section fixed to a drive shaft 6; a sub-arm 3 which has a base end section rotatably supported on a driven shaft 11 at a position different from the drive shaft 6; a rotation connection section 14 to which a tip of the main arm 2 is rotatably connected and to which a tip of the sub-arm 3 is rotatably connected at a position different from the connection position; and a connection member 4 which has a blade connection section 16 which extends from the rotation connection section 14 and to which a wiper blade is connected. The blade connection section 16 of the connection member 4 is provided with a nozzle 31 to jet cleaning fluid. The rotation connection section 14 is provided with a holding groove 33 to hold a hose 32 connected to the nozzle 31.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wiper arm having a main arm and a sub arm.

  Conventionally, as the wiper arm, there is a semi-panter type wiper arm that changes the attitude (angle) of the wiper blade with respect to the wiper arm during driving (see, for example, Patent Document 1). The semi-pantter type wiper arm includes a main arm whose base end is fixed to a drive shaft, and a sub arm whose base end is rotatably supported by a driven shaft at a position different from the drive shaft. In addition, the semi-pantter type wiper arm includes a rotation connecting portion in which a tip end portion of a main arm is rotatably connected and a tip end portion of a sub arm is rotatably connected to a position different from the connection portion. A connecting member having a blade connecting portion extending from the portion and connected to the wiper blade. In such a semi-pantter type wiper arm, the posture (angle) of the connecting member with respect to the main arm during driving of the drive shaft, and consequently the posture (angle) of the wiper blade connected to the blade connecting portion of the connecting member changes, so that suitable wiping is performed. A range can be obtained.

JP 2009-166777 A

  By the way, in recent years, it has been considered to provide a nozzle for injecting the cleaning liquid at the blade connecting portion to inject the cleaning liquid from a position close to the wiping surface. In such a case, if the hose connected to the nozzle is held by the main arm or sub arm as it is, the posture (angle) of the blade connecting portion provided with the nozzle relative to the main arm or sub arm changes during driving. It is conceivable that the hose is loosened in the vicinity of the blade connecting portion and comes into contact with the wiping surface or obstructs the driver's view.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a wiper arm that can stably hold a hose even during driving.

  A wiper arm that solves the above problems includes a main arm whose base end is fixed to a drive shaft, a sub arm whose base end is rotatably supported by a driven shaft at a position different from the drive shaft, A tip end portion is pivotably connected and a pivot connecting portion to which the tip end portion of the sub arm is pivotally connected to a position different from the connecting portion, and a wiper blade is connected to the pivot connecting portion extending from the pivot connecting portion. A wiper arm having a connecting member having a blade connecting portion, wherein the blade connecting portion is provided with a nozzle for injecting a cleaning liquid, and the rotating connecting portion is a hose connected to the nozzle. A hose holding part for holding the is provided.

  According to this configuration, the blade connecting portion is provided with the nozzle for injecting the cleaning liquid, so that the cleaning liquid can be injected well from a position close to the wiping surface. And since the hose holding part which holds the hose connected to a nozzle is provided in a rotation connection part, a hose can be stably hold | maintained from the nozzle of a blade connection part to a rotation connection part also at the time of a drive. . In other words, the hose connected to the nozzle of the blade connecting portion is held by the hose holding portion of the rotating connecting portion that does not change the posture with respect to the blade connecting portion even when driven, and the hose may be loosened at that site. And can be held stably even during driving.

  In the wiper arm, the connecting member includes the rotation connecting portion, the blade connecting portion, and an extending portion for connecting the upper wall and a side wall extending from both sides of the upper wall to the wiping surface side. It is preferable that the hose is accommodated in the connecting member across the blade connecting portion and the extending portion.

  According to this configuration, the connecting member includes the rotation connecting portion, the blade connecting portion, and the extending portion that connects them, the upper wall and the side wall extending from both sides of the upper wall to the wiping surface side. Since the hose is accommodated in the connecting member over the blade connecting portion and the extending portion, the hose is difficult to see from the outside, and the outer appearance of the wiper arm Appearance is good.

It is the said wiper arm, Comprising: It is preferable that the said hose holding | maintenance part is a holding groove formed in the said side wall in the said rotation connection part.
According to this configuration, since the hose holding part is a holding groove formed in the side wall of the rotation connecting part, the hose can be held without providing a separate part.

In the wiper arm, it is preferable that the holding groove has an inward extending portion extending inside the side wall, and the hose is sandwiched and held by the inward extending portion.
According to this configuration, the holding groove has an inward extending portion that extends inward of the side wall, and the hose is sandwiched and held by the inward extending portion. Compared to the case where the hose is sandwiched and held in the holding groove having the plate thickness, the contact area can be increased, and the hose can be stably held without being damaged. Further, since the inward extending portion extends inward of the side wall, the appearance of the wiper arm is better than that in the case of the outward extending portion extending outward.

  The wiper arm, wherein the main arm has a U-shaped section having an arm upper wall and an arm side wall extending from both sides of the arm upper wall toward the wiping surface, and the hose includes the main arm Is preferably housed in a portion having a U-shaped cross section and guided to the proximal end side of the main arm.

  According to the same configuration, the main arm has a U-shaped section having an arm upper wall and arm side walls extending from both sides of the arm upper wall toward the wiping surface, and the hose is provided in the main arm. Since it is accommodated inside the U-shaped section and guided to the base end side of the main arm, the hose is difficult to see from the outside, and the appearance is good.

  In the wiper arm having the main arm and the sub arm of the present invention, the hose can be stably held even during driving.

The top view of the wiper for vehicles in one embodiment. The bottom view of the semi-pantter type wiper arm in one embodiment. 1 is a partial perspective view of a semi-pantter type wiper arm according to an embodiment. 1 is a partial cross-sectional view of a semi-pantter type wiper arm in one embodiment. The partially expanded view for demonstrating the holding groove | channel in one Embodiment. AA sectional drawing of FIG.

Hereinafter, an embodiment of a vehicle wiper will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the vehicle wiper includes a wiper arm that changes the wiping posture of the wiper blade 15 between the main arm 2 and the sub arm 3, that is, a semi-panter-type wiper arm 1. A main arm 2 and a sub arm 3 and a connecting member 4 are provided.

  The main arm 2 is fixed to a drive shaft 6 whose base end portion reciprocally rotates by a driving force of a wiper motor (not shown). The main arm 2 includes an arm head 7 whose base end is fixed to the drive shaft 6, a retainer 8 whose base end is rotatably connected to the tip of the arm head 7, and a tip of the retainer 8. And an arm piece 9 having a base end portion fixed to the portion. The retainer 8 is formed in a U-shaped cross section having an arm upper wall 8a (see FIG. 1) and an arm side wall 8b extending from both sides of the arm upper wall 8a to the wiping surface side (the back side in FIG. 1). A coil spring (not shown) for energizing the front end side of the retainer 8 toward the wiping surface is accommodated in the interior, and the opening is covered with a cover 10 (see FIG. 2).

  The sub arm 3 is rotatably supported by a driven shaft 11 whose base end is different from the drive shaft 6. The sub arm 3 has a sub head 12 whose base end is fixed to the driven shaft 11, and a sub piece 13 whose base end is rotatably connected to the tip of the sub head 12. The retainer 8 and the subpiece 13 rotate with respect to the arm head 7 and the subhead 12 so as to be switchable between a wiping posture state (a state where the wiper blade 15 is in contact with the wiping surface) and a standing state (lockback state). Connected as possible.

  The connecting member 4 is configured such that the tip end portion of the main arm 2 (arm piece 9) is rotatably connected and the tip end portion of the sub arm 3 (sub piece 13) is rotatably connected to a position different from the connecting portion. It has a moving connecting portion 14 and a blade connecting portion 16 extending from the rotating connecting portion 14 to which a wiper blade 15 is connected.

  Specifically, as shown in FIG. 3, the rotation connecting portion 14 and the blade connecting portion 16 are integrally connected by an extending portion 17, and the extending portion 17 is the longitudinal length of the wiper arm (main arm 2). It extends in the direction. The rotation connecting portion 14, the blade connecting portion 16, and the extending portion 17 are composed of upper walls 14a, 16a, 17a and side walls 14b, 16b, 17b extending from both sides of the upper walls 14a, 16a, 17a to the wiping surface side. Is formed in a U-shaped cross section. In this example, the type of the blade connecting portion 16 to which the wiper blade 15 is connected is a U-shaped section having an upper wall 16a and a side wall 16b, and the side wall 16b of the blade connecting portion 16 is utilized. As described above, the side wall 17b of the extending portion 17 and the side wall 14b of the rotation connecting portion 14 are continuously formed from the side wall 16b.

  The upper wall 14a of the rotation connecting portion 14 is formed in a substantially rectangular shape, the tip end portion of the main arm 2 (arm piece 9) is rotatably connected to one end side thereof, and the sub arm 3 (subpiece 13) is connected to the other end side. ) Are rotatably connected.

  Specifically, as shown in FIG. 4, a cylindrical portion 14 c is formed on one end side of the upper wall 14 a of the rotation connecting portion 14 so as to extend downward (in the wiping surface direction) in a cylindrical shape by burring. A cylindrical metal collar 21 is fitted in the cylindrical portion 14 c, and a cylindrical bearing 22 is fitted in the metal collar 21. In addition, a through hole 9a formed in the distal end portion of the arm piece 9 is externally fitted to the bearing 22 protruding upward from the upper wall 14a in the rotating connecting portion 14, and the cylindrical portion is formed by the connecting member 23 that penetrates the bearing in this state. 14c, the metal collar 21, the bearing 22, and the arm piece 9 are restricted in relative movement in the vertical direction, and the arm piece 9 is rotatably supported by the rotation connecting portion 14. The connecting member 23 is fixed to the shaft member 24 having a head portion 24a that contacts the upper surface of the arm piece 9 and a shaft portion 24b penetrating the bearing 22, and the end portion of the shaft member 24 by caulking. , A metal collar 21, and a disk member 25 that contacts the lower surface of the bearing 22. Moreover, since the structure by which the sub arm 3 (subpiece 13) is connected with the rotation connection part 14 so that rotation is possible is also the same, the detailed description is abbreviate | omitted.

  As shown in FIG. 1, the extending portion 17 is a short side direction of the rotation connecting portion 14 from the one end side (the side to which the main arm 2 is connected) of the rotation connecting portion 14 and the side on which the main arm 2 extends. And extends downward (toward the tip side of the main arm 2) and downward (in the wiping surface direction, the back side in FIG. 1), and further in an oblique direction (the forward movement direction of the wiper blade 15, In other words, it is formed to extend to the side opposite to the sub arm 3.

  The blade connecting portion 16 is formed to extend from the tip of the extending portion 17 along a direction substantially parallel to the short side direction (longitudinal direction of the main arm 2) of the rotating connecting portion 14. The wiper blade 15 is connected to the blade connecting portion 16 so that a part of the blade connecting portion 16 is accommodated inside the blade connecting portion 16 (the inner side formed by the upper wall 16a and the side wall 16b of the blade connecting portion 16).

  Further, the blade connecting portion 16 is provided with a nozzle 31 for injecting the fed cleaning liquid to the wiping surface side. Specifically, a fixing hole 16c (see FIG. 2) is provided in the side wall 16b on the forward movement direction side of the blade connecting portion 16, and a nozzle 31 is fitted into the fixing hole 16c. The nozzle 31 includes a nozzle main body 31b having an injection port 31a and disposed on the outer side (forward direction side) of the side wall 16b, and an introduction cylinder portion 31c disposed on the inner side of the side wall 16b. A hose 32 is connected (communication) to the introduction cylinder portion 31c.

  As shown in FIG. 2, the hose 32 connected to the nozzle 31 (introducing cylinder portion 31 c) is provided so as to be transmitted through the main arm 2 to the base end side of the semi-pantter type wiper arm 1, and is provided in a vehicle (not shown). Connected to the washer pump.

  Here, as shown in FIGS. 3 and 5, in the present embodiment, the rotation connecting portion 14 of the connecting member 4 is provided with a holding groove 33 as a hose holding portion for holding the hose 32. The holding groove 33 is formed on the side wall 14b of the rotation connecting portion 14, and holds the hose 32 in such a manner that the hose 32 penetrates the side wall 14b.

  Specifically, as shown in FIG. 5, the holding groove 33 of the present embodiment extends vertically from the lower end (wiping surface side end) of the side wall 14 b and from the upper end of the vertical groove 33 a to the side. The hose 32 is sandwiched and held by being inserted from below the vertical groove 33a and lightly press-fitted into the deep part of the horizontal groove 33b. That is, the holding groove 33 sandwiches and holds the hose 32 by using a force that the hose 32 that is slightly crushed when lightly press-fitted into the deep part of the lateral groove 33b returns.

  Further, as shown in FIG. 6, the holding groove 33 of the present embodiment has an inwardly extending portion 33c that extends inward of the side wall 14b, and the inwardly extending portion 33c (with no inwardly extending portion 33c). The hose 32 is clamped and held (with an inner surface 33d having a larger area).

  As shown in FIGS. 2 and 3, in the present embodiment, the hose 32 connected to the nozzle 31 (introducing cylinder portion 31c) constitutes the connecting member 4 formed in a U-shaped cross section as described above. The blade connection portion 16, the extending portion 17, and the rotation connection portion 14 are held in the holding groove 33 provided in the rotation connection portion 14 while being accommodated inside the rotation connection portion 14.

  Further, as shown in FIG. 2, the hose 32 held in the holding groove 33 and led to the outside of the rotation connecting portion 14 is guided through the main arm 2 and the inside of the retainer 8 formed in the U-shaped cross section. (Which is further covered by the cover 10 in this embodiment) and guided to the base end side of the main arm 2.

Next, the operation of the vehicle wiper (semi-panter type wiper arm 1) configured as described above will be described.
For example, when a wiper switch (not shown) is operated and a wiper motor (not shown) is driven, the drive shaft 6 is reciprocally rotated by the driving force, and the main arm 2 is reciprocally swung. Then, the sub arm 3 connected to the rotation connecting portion 14 of the connecting member 4 also reciprocally swings, and is connected to the posture (angle) of the connecting member 4 with respect to the main arm 2 and eventually to the blade connecting portion 16 of the connecting member 4. While the posture (angle) of the wiper blade 15 is changed, the wiping surface is wiped by the wiper blade 15.

  For example, when a not-shown washer switch is operated and a not-shown washer pump is driven, the cleaning liquid is fed to the nozzle 31 via the hose 32 and the cleaning liquid is sprayed from the ejection port 31a of the nozzle 31 to the wiping surface side. Is done. At this time, the cleaning liquid is sprayed onto the wiping surface of the wiper blade 15 in the forward movement direction, and immediately wiped off by the wiper blade 15 moving forward.

Next, the effect of the said embodiment is described below.
(1) Since the blade connecting portion 16 is provided with the nozzle 31 for injecting the cleaning liquid, the cleaning liquid is injected well from a position close to the wiping surface (to a suitable position without being affected by the traveling wind or the like). can do. Since the rotation connecting portion 14 is provided with a holding groove 33 (hose holding portion) for holding the hose 32 connected to the nozzle 31, the hose 32 is rotated from the nozzle 31 of the blade connecting portion 16 even during driving. The connecting portion 14 can be stably held. That is, the hose 32 connected to the nozzle 31 of the blade connecting portion 16 is held in the holding groove 33 of the rotating connecting portion 14 so that the posture with respect to the blade connecting portion 16 does not change even when driven. Can be held stably even during driving. As a result, for example, it is possible to suppress the hose 32 from loosening in the vicinity of the blade connecting portion 16 and coming into contact with the wiping surface or obstructing the driver's view.

  (2) In the connecting member 4, the rotating connecting portion 14, the blade connecting portion 16, and the extending portion 17 for connecting them are wiped from the upper walls 14a, 16a, 17a and both sides of the upper walls 14a, 16a, 17a. The hose 32 is housed in the connecting member 4 across the blade connecting portion 16 and the extending portion 17. The hose 32 is formed in a U-shaped cross section having side walls 14 b, 16 b and 17 b extending on the surface side. Therefore, the hose 32 is difficult to see from the outside, and the appearance of the semi-pantter type wiper arm 1 is improved.

  (3) Since the holding groove 33 as a hose holding part is formed in the side wall 14b in the rotation connection part 14, the hose 32 can be hold | maintained, without providing especially another components.

  (4) The holding groove 33 has an inwardly extending portion 33c extending inward of the side wall 14b, and holds and holds the hose 32 by the inwardly extending portion 33c. Compared with the case where the hose 32 is sandwiched and held in the holding groove having the plate thickness, the contact area can be increased, and the hose 32 can be stably held without being damaged. Further, since the inward extending portion 33c extends to the inside of the side wall 14b, the appearance of the semi-panter-type wiper arm 1 is improved as compared with the case of the outward extending portion extending to the outside.

  (5) The main arm 2 has a U-shaped retainer 8 having an arm upper wall 8a and arm side walls 8b extending from both sides of the arm upper wall 8a to the wiping surface side. Since the hose 32 is difficult to see from the outside, the appearance of the main arm 2 is improved.

The above embodiment may be modified as follows.
In the above-described embodiment, the rotary connecting portion 14, the blade connecting portion 16, and the extending portion 17 that connects them are U-shaped cross sections having upper walls 14a, 16a, 17a and side walls 14b, 16b, 17b. However, the present invention is not limited to this, and for example, a part or all of them may have other shapes such as a simple plate shape. In this case, at least a part of the hose 32 is not accommodated in the blade connecting portion 16, the extending portion 17, and the rotating connecting portion 14.

  In the above embodiment, the hose holding portion is the holding groove 33 formed on the side wall 14b of the rotation connecting portion 14, but is not limited thereto, and is fitted to the rotation connecting portion 14, for example. It is good also as a structure which hold | maintains the hose 32 in the rotation connection part 14 using another component.

  In the above embodiment, the holding groove 33 has an inwardly extending portion 33c extending to the inside of the side wall 14b, and the hose 32 is sandwiched and held by the inwardly extending portion 33c, but is not limited thereto. It is good also as a structure which does not have the inward extension part 33c (the hose 32 is pinched and hold | maintained with the plate | board thickness of the side wall 14b). Moreover, it is good also as a structure which pinches and hold | maintains the hose 32 with this extension part as a shape which has the extension part extended on the outer side of the side wall 14b.

  In the above embodiment, the main arm 2 has the retainer 8 having a U-shaped cross section, and the hose 32 is accommodated inside the retainer 8 (and further covered by the cover 10), and is on the proximal end side of the main arm 2 However, the present invention is not limited to this, and the hose 32 may be configured not to be accommodated in a part of the main arm 2. Moreover, it is good also as a structure which is not covered with the cover 10 (it does not have the cover 10), although accommodated in the inside of the retainer 8. FIG. The hose 32 may be guided to the base end side of the sub arm 3 through the sub arm 3.

  DESCRIPTION OF SYMBOLS 1 ... Semi-panter-type wiper arm (wiper arm), 2 ... Main arm, 3 ... Sub arm, 4 ... Connecting member, 6 ... Drive shaft, 8 ... Retainer (section of U shape in cross section of main arm), 8a ... Arm upper wall, 8b ... arm side wall, 11 ... driven shaft, 14 ... rotating connection part, 14a, 16a, 17a ... upper wall, 14b, 16b, 17b ... side wall, 15 ... wiper blade, 16 ... blade connection part, 17 ... extension part, 31 ... Nozzle, 32 ... Hose, 33 ... Holding groove (hose holding part), 33c ... Inward extension part.

Claims (5)

A main arm whose base end is fixed to the drive shaft;
A sub arm whose base end is rotatably supported by a driven shaft at a position different from the drive shaft;
A rotation connecting portion in which a tip end portion of the main arm is rotatably connected and a tip end portion of the sub arm is rotatably connected to a position different from the connecting portion, and a wiper extending from the rotation connecting portion. A wiper arm comprising a connecting member having a blade connecting portion to which the blade is connected,
The blade connecting portion is provided with a nozzle for injecting a cleaning liquid,
The wiper arm according to claim 1, wherein a hose holding portion for holding a hose connected to the nozzle is provided in the rotation connecting portion. The wiper arm according to claim 1,
The connecting member has a U-shaped cross section in which the rotating connecting portion, the blade connecting portion, and an extending portion connecting them have an upper wall and side walls extending from both sides of the upper wall to the wiping surface side. Formed,
The wiper arm, wherein the hose is accommodated in the connecting member over the blade connecting portion and the extending portion. The wiper arm according to claim 2,
The wiper arm according to claim 1, wherein the hose holding part is a holding groove formed in the side wall of the rotation connecting part. The wiper arm according to claim 3,
The said holding groove has an inward extension part extended inside the said side wall, The said hose is clamped and hold | maintained by this inward extension part, The wiper arm characterized by the above-mentioned. The wiper arm according to any one of claims 1 to 4,
The main arm has a U-shaped section having an arm upper wall and an arm side wall extending from both sides of the arm upper wall to the wiping surface side,
The wiper arm according to claim 1, wherein the hose is housed inside a U-shaped section of the main arm and guided to a base end side of the main arm.

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