JP2001106034A - Wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper device for improving not only workability for handling a hose when a piping hose for feeding washing fluid to a washer nozzle provided on a wiper arm or a wiper blade is arranged but also design properties and weather resistance. SOLUTION: In an arm head 24 of a wiper device 10 (a wiper arm 12), a cutout part 31 is formed between a skirt part 25 for surrounding the periphery of a pivot shaft 18 and a side wall 26, and an extended part 33 extending from the outer periphery of the skirt part 25 is formed inside the side wall 26. A piping hose 44 for feeding washing fluid to a washer nozzle is pinched by the cutout part 31, introduced from the cutout part 31 into the side wall 26, pinched between the extended part 33 and the side wall 26, and then connected to the washer nozzle through a coil part 29A of a spring 29. Accordingly, workability for handling a hose is improved, and design properties and weather resistance are also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device for wiping windshield glass or the like of an automobile.

[0002]

2. Description of the Related Art A wiper device for a vehicle for wiping windshield glass or the like of an automobile includes a wiper arm and a wiper blade held by the wiper arm.

In the wiper arm, one end of an arm head is fixed to a pivot shaft, and a retainer is connected to the other end of the arm head via a support shaft so as to be rotatable by a predetermined angle. A spring is attached between the arm head and the retainer, and constantly biases the retainer toward a wiping surface such as a windshield glass. An arm piece is fixed to the tip of the retainer. The tip of the arm piece is a hook bent in a substantially U-shape, and connects and holds the wiper blade. on the other hand,
The wiper blade includes a blade rubber that contacts and wipes the wiping surface, and a plurality of holding levers that hold the blade rubber.

When the wiper device for a vehicle is operated, the wiper arm and the wiper blade reciprocate, so that the blade rubber moves while being in close contact with the windshield glass surface and wipes raindrops.

Conventionally, especially when the glass surface is large and the distance to the landing point of the washing liquid ejected from the washer nozzle of the vehicle is long, the ejected washing liquid is more reliably attached to the target point where it is wiped by the wiper blade. In order to cause water to flow, a device in which a washer nozzle or a wiper blade is provided with a washer nozzle to eject water is known (for example, Japanese Utility Model Laid-Open No. Hei 5-16521, Japanese Patent Laid-Open No. Hei 10-167018).

In any of the wiper devices disclosed in the above publications, a piping hose for delivering a washing liquid of a washer tank to a washer nozzle is taken out of a vehicle body near a pivot shaft, and a long wiring is provided on an outer side wall of an arm head. A hole is formed, and a piping hose is inserted into the wiring hole. Thereby, the appearance (design) and the weather resistance are improved.

[0007] On the other hand, however, the piping hose must be passed through a long and narrow wiring hole formed in the outer side wall of the arm head. Further, in such a configuration in which the long wiring hole is formed on the outer side wall of the arm head, a molding die for integrally forming the wiring hole in the arm head becomes complicated, which also causes an increase in cost.

Further, even if the piping hose is inserted into the wiring hole as described above to improve the appearance (design) and weather resistance, the piping hose is still exposed from both ends of the wiring hole. Because
The design and the weather resistance were not sufficiently satisfactory. In this case, if the wiring hole is formed long in order to prevent this, that is, to reduce the exposure of the piping hose, there is a problem that the workability of the piping hose handling is further deteriorated.

[0009]

SUMMARY OF THE INVENTION In view of the above-mentioned facts, the present invention has improved workability of hose routing when arranging a piping hose for delivering a cleaning liquid to a washer nozzle provided on a wiper arm or a wiper blade. It is an object of the present invention to provide a wiper device that can improve not only the design but also the design and weather resistance.

[0010]

According to a first aspect of the present invention, there is provided a wiper device, wherein an arm head having one end fixed to a pivot shaft is rotatably supported on the arm head in a direction of a wiping surface. A wiper arm having a retainer, a wiper blade attached to a tip of the wiper arm for wiping a wiping surface, a washer nozzle provided on the wiper arm or the wiper blade, and for jetting a cleaning liquid to the wiping surface, the arm head and the retainer And a piping hose connected to the washer nozzle and connected to the washer nozzle for delivering the cleaning liquid, wherein the arm head has side walls formed on both sides in the longitudinal direction, and a base end of the side wall. A cutout part of which is cut off and communicated with the inside of the side wall; With the lifting, from said notch is introduced inside of the side wall disposed along said sidewall interior is characterized by.

In the wiper device for a vehicle according to the present invention, the pipe hose is sandwiched by a notch formed by cutting a part of the side wall of the arm head, and further from the notch to the inside of the side wall of the arm head. It is introduced and arranged along the inside of the side wall. That is, the piping hose does not have to pass through the long and narrow wiring hole integrally formed in the arm head for the hose wiring as in the related art (naturally, the long and narrow wiring hole in the arm head is integrated with the arm head). Since there is no need to mold the piping hose, the piping hose is simply clamped in the notch, so that the workability of laying the piping hose is greatly improved. This eliminates the need for a complicated molding die for integrally forming a long and narrow wiring hole with the arm head as in the conventional case, and allows the piping hose to be held and routed without using special parts. , Lower cost.

Further, if the design and weather resistance are to be improved by minimizing the exposure of the piping hose as in the prior art, the narrow wiring hole formed integrally with the arm head becomes long, and the workability is further increased. Getting worse. In contrast,
In the wiper device for a vehicle according to the first aspect, the pipe hose sandwiched between the notches is introduced into the inside of the side wall of the arm head from the notch and disposed along the inside of the side wall, so that the exposure of the pipe hose is minimized. As a limit, the design and weatherability can be improved, and it does not affect the workability of wiring.

According to a second aspect of the present invention, in the wiper device according to the first aspect, the arm head has a skirt surrounding the pivot shaft, and the notch is provided with the skirt. , And is formed adjacent to.

In the wiper device according to the second aspect, the wiper arm pivots around the pivot shaft, but a notch is formed adjacent to the skirt surrounding the pivot shaft to clamp the piping hose. As a result, the pipe hose is wound around the large-diameter peripheral surface of the outer periphery of the skirt portion as the wiper arm rotates. For this reason, this piping hose can be prevented from being abnormally bent or unnecessarily pinched, and even if the winding of the piping hose is repeated by the reciprocating operation of the wiper arm, the piping hose is not stressed and is damaged. hard. Therefore,
The cleaning liquid can be reliably delivered to the washer nozzle without causing the pipe hose to leak.

According to a third aspect of the present invention, in the wiper apparatus according to the second aspect, the arm head includes:
An extension portion extending from the outer periphery of the skirt portion toward the distal end to the inside of the side wall, wherein the pipe hose is sandwiched between the extension portion and an inner surface of the side wall; It is characterized by.

In the wiper device according to the third aspect of the present invention, the arm head has an extended portion formed on the inner side of the side wall from the outer periphery of the skirt portion toward the distal end, so that the extended portion serves as a rib function. With a reinforced structure, arm head strength is improved.

In this case, even if the piping hose is sandwiched between the notches and the piping hose is introduced and routed inside the side wall of the arm head, it is unstable. By holding the piping hose between the arm and the arm, more stable wiring can be performed along the arm head longitudinal direction.

A wiper device according to a fourth aspect of the present invention is the wiper device according to any one of the first to third aspects, wherein the wiper device is bridged between the retainer and the arm head and is attached to the arm head. A spring having a coil portion for applying a biasing force toward the wiping surface of the retainer, wherein the retainer is formed in a U-shaped cross section with a base end side opened downward, and The coil portion of the spring is arranged in a U-shape, and
The pipe hose routed along the inside of the side wall of the arm head is penetrated through the inside of the coil portion and led out to the tip end side of the wiper arm.

In the wiper device according to the fourth aspect, the piping hose routed along the inside of the side wall of the arm head penetrates through the coil portion of the spring disposed in the U-shape of the retainer and is located on the tip side of the wiper arm. Derived.

Therefore, although the pipe hose is somewhat inferior in terms of assemblability, the pipe hose inserted into the coil portion of the spring comes into contact with the coil portion (that is, stays inside the pipe hose and the pipe hose). The squeaking noise (vibration) generated when the spring expands and contracts is attenuated or absorbed and reduced.

According to a fifth aspect of the present invention, in the wiper device according to any one of the first to fourth aspects, the notch has an opening with one end opened, and the pipe hose has the opening. And a passage that guides the piping hose continuously from the opening to the holding portion, and has a width dimension A in a part of the passage. When a narrow portion smaller than the diameter R of the piping hose is provided, the opening width dimension is B, and the holding section width dimension is C, the dimensional relationship is “B>R> A” and “C ≧ R”. It is characterized by.

In the wiper device according to the fifth aspect, since each of the piping hose, the opening, the narrow portion, and the holding portion is set in the above-described dimensional relationship, it is easy to insert the piping hose from the opening. In addition, by holding the piping hose on the holding portion beyond the narrow portion in the passage, the piping hose does not easily come off due to the operation of the wiper arm. Further, when the piping hose is held by the holding portion, the piping hose can be held without being deformed.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view, partially cut away, of an entire configuration of a vehicle wiper device 10 according to an embodiment of the present invention. FIG. 2 shows the wiper device 1.
0 is shown in a partially cutaway front view, and FIG. 3 is a plan view showing the configuration of the main part of the wiper device 10.

The wiper device 10 includes a wiper arm 12 and a wiper blade 36 held by the wiper arm 12.

The wiper arm 12 has an arm head 24 and a retainer 28. The arm head 24 has one end fixed to a pivot shaft (not shown) as a rotation shaft provided on the vehicle body, and always rotates together with the pivot shaft. A retainer 28 is connected to the other end of the arm head 24 via a support shaft 30 so as to be rotatable by a predetermined angle in a direction approaching and separating from the windshield glass. The retainer 28 is formed in a U-shaped cross section with its base end side (the side of the support shaft 30) opened downward. Further, a spring 29 is stretched between the retainer 28 and the arm head 24. The spring 29 is a so-called tension coil spring, and its coil portion 29A is arranged in a U-shaped cross section of the retainer 28, and constantly biases the retainer 28 toward the wiping surface of the windshield glass.

Further, an arm piece 32 which constitutes the wiper arm 12 together with the retainer 28 is fixed to the tip of the retainer 28. The tip of the arm piece 32 is bent into a substantially U-shape to form a hook 34, and the wiper blade 36 is connected and held via a clip member (not shown).

Here, as shown in detail in FIGS. 2 and 3,
The arm head 24 has a skirt portion 25 surrounding the periphery of the pivot shaft, and has side walls 26 formed at both ends in the longitudinal direction on the distal end side.

Further, on the base end side (side of the skirt portion 25) of the side wall 26, a convex portion 27 protruding downward (toward the wiping surface) is formed.
A part of the side wall 26 is cut away,
Is formed with a notch 31 communicating with the inside. The notch 31 is formed adjacent to the skirt 25, and is used for arranging a piping hose 44 described in detail later.

Here, as shown in FIG.
An opening 31A having one end opened, and a holding portion 31B into which a piping hose 44 is inserted and finally held through the opening 31A.
And a passage 31C that continuously guides the piping hose 44 from the opening 31A to the holding portion 31B.
4, a narrow portion 31D smaller than the diameter R is provided.

Further, in this case, when the width of the opening 31A is B and the width of the holding portion 31B is C, "B
>R> A "and" C≥R ".

The arm head 24 has an extension 33
Are formed. The extension portion 33 is provided in the skirt portion 25.
The arm head 24 has a reinforcing function as a rib function and is used for routing a piping hose 44 described later in detail.

Further, the wiper arm 12 having the above configuration
Is provided with a washer nozzle 42. The washer nozzle 42 is attached to the arm piece 32, and the washer nozzle 42 has a piping hose 44.
Are connected at one end.

The piping hose 44 is connected to a washer tank (not shown) provided in the vehicle body via a washer pump, and extends from a hose outlet of a vehicle body provided near the pivot shaft to the outside of the vehicle body. The arm head 24 is pulled out, and the notch 31 (the holding portion 31) of the arm head 24 is pulled out.
B) and the side wall 26
And is sandwiched between the extension portion 33 and the inner surface of the side wall 26 and disposed along the inside of the side wall 26. Further, a piping hose 44 arranged along the inside of the side wall 26
Is hooked on the holding pin 35 at a position near the tip of the arm head 24, then penetrated through the coil portion 29 </ b> A of the spring 29, is led out to the tip of the retainer 28, and is connected to the washer nozzle 42. ing. Thus, the cleaning liquid can be delivered to the washer nozzle 42 via the pipe hose 44.

Next, the operation of the present embodiment will be described.

In the wiper device 10 using the wiper arm 12 having the above structure, the wiper arm 12 and the wiper blade 36 reciprocate with the pivot shaft, thereby wiping raindrops and the like on the windshield glass surface.

Here, in the wiper device 10, the washer nozzle 42 is provided on the wiper arm 12.
For this reason, even if the wiping range of the wiper blade 36 is large, the cleaning liquid ejected from the washer nozzle 42 can be surely landed on the target point to be wiped by the wiper blade 36.

Here, in the wiper device 10, the pipe hose 44 for delivering the cleaning liquid to the washer nozzle 42 provided on the wiper arm 12 (arm piece 32) is formed by cutting off a part of the side wall 26 of the arm head 24. The arm head 24 is inserted into the side wall 26 of the arm head 24 and is disposed along the inside of the side wall 26. That is, the piping hose 44 does not have to pass through the long and narrow wiring hole integrally formed with the arm head 24 for the hose wiring as in the related art (naturally, the long and narrow wiring hole as in the prior art is connected to the arm head 24). It is not necessary to integrally mold the pipe hose with the pipe 24, and the piping hose 44 is simply sandwiched between the notches 31, so that the workability of arranging the pipe hose 44 is extremely improved. Also for this,
A complicated forming die for integrally forming a long and narrow wiring hole with the arm head 24 as in the related art is unnecessary, and the piping hose 44 can be held and routed without using any special parts. Cost.

Further, if the design and weather resistance are improved by minimizing the exposure of the piping hose 44 as in the prior art, the narrow wiring hole formed integrally with the arm head 24 becomes long, and further work is required. The sex worsens. On the other hand, in the wiper device 10 according to the present embodiment, the pipe hose 44 held between the notches 31 is introduced into the inside of the side walls 26 of the arm head 24 from the notches 31 and the side wall 2.
Since it is arranged along the inner side of 6, the exposure of the piping hose 44 can be minimized and the design and weather resistance can be improved, and it does not affect the workability of the wiring.

In this wiper device 10, the wiper arm 12 pivots around the pivot shaft.
The notch 31 is formed adjacent to the skirt portion 25 of the arm head 24 surrounding the pivot shaft and sandwiches the piping hose 44, so that the piping hose 44 moves around the outer periphery of the skirt portion 25 with the turning movement of the wiper arm 12. Is wound around the peripheral surface having a large diameter. For this reason, the pipe hose 44 can be prevented from being abnormally bent or unnecessary pinching, and even if the winding and unwinding of the pipe hose 44 are repeated by the reciprocating operation of the wiper arm 12, Less stress and less damage. Therefore, the pipe hose 44 does not leak, and the cleaning liquid can be reliably delivered to the washer nozzle 42.

When the wiper arm 12 is swiveling, the pipe hose 44 is wound around and unwound on the head (top) of the skirt 25, and at a position lower than the head of the skirt 25. (Opening side)
Is provided with a narrow portion 31D of the cutout portion 31, so that the pipe hose 44 is connected to the narrow portion 31
D does not come off from the opening 31A.

Further, in the wiper device 10, since the arm head 24 has the extension 33 formed inside the side wall 26 from the outer periphery of the skirt portion 25 toward the distal end, the extension 33 Have a reinforcing structure as a rib function, and the strength of the arm head 24 is improved.

Here, the pipe hose 44 is connected to the notch 31.
Even if it is unstable only by inserting and arranging the piping hose 44 inside the side wall 26 of the arm head 24, the piping hose is provided between the extension portion 33 as the reinforcing structure and the inner surface of the side wall 26. By holding the arm 44, it is possible to perform more stable wiring along the longitudinal direction of the arm head 24.

Further, in the wiper device 10, the piping hose 44 routed along the inside of the side wall 26 of the arm head 24 moves inside the coil portion 29A of the spring 29 disposed in the U-shape of the retainer 28. It penetrates and is led out to the tip side of the wiper arm 12.

Therefore, although the assemblability of the piping hose 44 is somewhat inferior, the piping hose 44 inserted into the coil portion 29A of the spring 29 comes into contact with this coil portion (ie, the piping hose 44 and the piping hose). The squeaking noise (vibration) generated when the spring 29 expands and contracts due to the water remaining inside the hose 44).
Is attenuated or absorbed and reduced.

In the above-described embodiment, the washer nozzle 42 is attached to the arm piece 32 constituting the wiper arm 12, but the present invention is not limited to this, and the washer nozzle 42 is attached to the wiper blade 36. The present invention is applicable even in the case of the attached structure.

As described above, in the wiper device 10 according to the present embodiment, the hose for arranging the piping hose 44 for delivering the cleaning liquid to the washer nozzle 42 provided on the wiper arm 12 or the wiper blade 36 is used. Not only can the workability of the handling be improved, but also the design and the weather resistance can be improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an entire configuration of a wiper device according to an embodiment of the present invention.

FIG. 2 is a partially broken front view showing details of a peripheral portion of an arm head of the wiper device according to the embodiment of the present invention.

FIG. 3 is a plan view showing details of a peripheral portion of an arm head of the wiper device according to the embodiment of the present invention.

FIG. 4 is a front view showing details of a notch formed in an arm head of the wiper device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wiper device 12 Wiper arm 24 Arm head 28 Retainer 29 Spring 29A Coil part 30 Support shaft 31 Notch part 31A Opening 31B Holding part 31C Passage 31D Narrow part 32 Arm piece 36 Wiper blade 42 Washer nozzle 44 Piping hose

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiharu Ochino 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda F-term (reference) 3D025 AA01 AC01 AC02 AD01 AE04 AE05 AF10

Claims (5)

[Claims] 1. A wiper arm having an arm head having one end fixed to a pivot shaft, a retainer pivotally supported on the arm head in a direction of a wiping surface, and an end attached to the wiper arm. A wiper blade for wiping the wiping surface, a washer nozzle provided on the wiper arm or the wiper blade, for jetting a cleaning liquid to the wiping surface, and disposed along the arm head and the retainer and connected to the washer nozzle. A pipe hose that delivers a cleaning liquid, wherein the arm head is communicated with the inside of the side wall formed by cutting off a part of the base end side of the side wall formed on both sides in the longitudinal direction and the side wall. A notch portion, wherein the piping hose is sandwiched by the notch portion, and is inside the side wall from the notch portion. The wiper device is disposed along the inner side of the side wall. 2. The wiper according to claim 1, wherein the arm head has a skirt surrounding the pivot shaft, and the notch is formed adjacent to the skirt. apparatus. 3. The arm head has an extension formed to extend from the outer periphery of the skirt to the tip side toward the inside of the side wall, and between the extension and the inner surface of the side wall. 3. The wiper device according to claim 2, wherein the piping hose is held between the wipers. 4. A spring which is provided between the retainer and the arm head and has a coil portion for applying a biasing force to the arm head toward the wiping surface with respect to the arm head, the spring comprising: Is formed in a U-shape in cross section with the base end side opened downward, the coil portion of the spring is disposed within the U-shape of the retainer, and is disposed along the inner side wall of the arm head. The wiper device according to any one of claims 1 to 3, wherein the laid pipe hose is guided to the tip side of the wiper arm through the inside of the coil portion. 5. The notch has an opening with one end opened, a holding portion into which the piping hose is inserted from the opening and finally held, and the pipe extending from the opening to the holding portion continuously. A passage for guiding the hose,
When a narrow portion having a width A smaller than the diameter R of the pipe hose is provided in a part of the passage, and the opening width is B and the holding portion width is C, "B>R>A" and The wiper device according to claim 1, wherein the wiper device has a dimensional relationship of “C ≧ R”.