JP2007196724A - Wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper device capable of dealing with enlargement of a wiper blade without lowering rigidity of a wiper arm. <P>SOLUTION: It is not necessary to provide a cutout on a main arm 18 to install an intermediate washer nozzle and consequently it is possible to deal with enlargement of the wiper blade without lowering rigidity of the wiper arm as it is devised to install the intermediate washer nozzle on a tongue piece part 26 by integrally providing the tongue piece part 26 extending from a side wall 18a of a roughly intermediate part on the main arm 18 constituting the wiper arm and formed by bending its base end part 26a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wiper device having a wiper arm for wiping a windshield of a vehicle or the like, and more particularly to a wiper device having a washer nozzle for spraying washer liquid onto a wiping surface.

  A wiper device is used for wiping off dust, raindrops, snow, and the like attached to a windshield of a vehicle or the like to ensure a driver's field of view. In this wiper device, generally, one end side of a wiper arm is fixedly attached to a pivot shaft constituting a part of a link mechanism via a link mechanism connected to an output shaft of an electric motor. Then, the operator operates a wiper switch or the like in the vehicle to rotate the electric motor, and the rotation drive of the electric motor is converted into a swinging motion by the link mechanism, the wiper arm is swung, and is attached to the wiper arm. The wiper blade wipes a predetermined wiping range on the windshield.

  In addition, a washer device is provided as a functional part for cleaning the wiping surface such as a windshield. It consists of an electric pump that sends the liquid to a rubber hose and a washer nozzle that is connected to the engine hood and connected to the rubber hose. For example, when removing dry dust or the like adhering to the windshield, the operator operates the wiper switch to drive the electric pump, spray the washer liquid on the windshield through the washer nozzle, and then Wipe the windshield with a wiper blade. In this way, by spraying the washer liquid onto the windshield by the washer device, it is possible to clean the wiping surface by cleanly flowing off dust on the windshield.

By the way, as a technique for mounting the washer nozzle constituting the washer device on the wiper arm without mounting on the engine hood, for example, those shown in Patent Document 1 and Patent Document 2 are known. By attaching the washer nozzle to the nozzle, it is possible to clean the appearance or to spray the washer liquid toward the wiping portion of the wiper blade regardless of the wiping position of the wiper blade.
JP 2002-370625 A JP 2002-321599 A

  However, according to each of the above patent documents, the washer nozzle is fixed by cutting out a part of the side wall of the wiper retainer having a substantially U-shaped cross section having a pair of side walls and an upper wall constituting the wiper arm. Or a mounting portion for exposing the washer nozzle toward the windshield. Therefore, the rigidity of the wiper retainer is insufficient, and the wiper retainer bends or deforms due to the frictional resistance force when the wiper device is operated, particularly when the windshield and wiper blade are in a dry contact state. There is a possibility that uneven wiping may occur. In particular, in order to cope with the increase in the size of the wiper blade accompanying the increase in the size of the windshield, it is impossible to avoid solving the above problems.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a wiper device including a wiper arm that can cope with an increase in the size of a wiper blade without lowering the rigidity of the wiper arm. is there.

  The wiper device of the present invention includes a wiper blade that wipes a wiping surface of a vehicle, and a wiper arm that is rotatably connected to one of the wiper blades and that is fixed to a pivot shaft provided on the vehicle body on the other side. The wiper device, wherein the wiper arm has an arm head whose one end is fixed to the pivot shaft, and is rotatably connected to the other end of the arm head, and has a pair of side walls and an upper wall. An arm body that opens toward the side, a tongue piece that is integrally formed extending from one side wall of the arm body, and is formed by bending a base end portion toward the other side wall of the arm body, A washer nozzle attached to the tongue piece and spraying a washer liquid onto the wiping surface is provided.

  The wiper device of the present invention includes a wiper blade that wipes a wiping surface of a vehicle, and a wiper arm that is rotatably connected to one of the wiper blades and that is fixed to a pivot shaft provided on the vehicle body on the other side. The wiper device, wherein the wiper arm has an arm head whose one end is fixed to the pivot shaft, and is rotatably connected to the other end of the arm head, and has a pair of side walls and an upper wall. An arm main body that opens toward the head, and a front end and a base end of the arm main body. The arm main body extends integrally from one side wall of the arm main body. A tongue piece formed by bending toward the side wall, a hose disposed from the vehicle body to the wiper arm, and a tongue piece attached to the tongue piece and spraying washer liquid onto the wiping surface A first washer nozzle having a pair of hose connection parts for connecting the hose, connecting the hose on the arm head side to one of the hose connection parts, and connecting the other hose connection part The hose is connected to a second washer nozzle provided at the tip of the arm body.

  The wiper device according to the present invention is characterized in that the washer nozzle is mounted on a facing surface of the tongue piece that faces the wiping surface.

  The wiper device according to the present invention is characterized in that the tongue piece portion has an engaging portion with which a leg portion provided in the washer nozzle engages.

  According to the present invention, the tongue piece formed by extending from the side wall of the arm main body constituting the wiper arm and bending the base end thereof is integrally provided, and the washer nozzle is attached to the tongue piece. Therefore, it is not necessary to provide a notch in the arm main body in order to mount the washer nozzle, and this makes it possible to cope with an increase in the size of the wiper blade without reducing the rigidity of the wiper arm.

  According to the present invention, since the pair of hose connection portions are formed in the washer nozzle attached to the tongue piece portion between the distal end and the proximal end of the wiper arm, the hose on the arm head side is used as one hose connection portion. Since the hose connected to the other hose connection part is connected to the washer nozzle at the tip of the wiper arm, the washer nozzle is connected between the tip and the base end of the wiper arm and at multiple places such as the tip part. Even when the wiper blade is provided, it is possible to cope with an increase in the size of the wiper blade without reducing the rigidity of the wiper arm.

  According to the present invention, since the washer nozzle is mounted on the facing surface facing the wiping surface of the tongue piece, the washer liquid can be reliably sprayed on the wiping surface via the washer nozzle, and the washer nozzle is externally attached. It can be placed in a place where it is difficult to see from, so that it looks good.

  According to the present invention, the tongue piece portion has the engaging portion with which the leg portion provided on the washer nozzle is engaged. Therefore, the washer nozzle can be fixed to the tongue piece portion with one touch, and the assembly workability is improved. Can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing a wiper device of the present invention, FIGS. 2A and 2B are a front view and a side view showing a wiper arm alone of the wiper device of the present invention, and FIG. The perspective view seen from the shield side is shown, respectively.

  As shown in FIG. 1, the wiper device 10 has a relatively wide wiping range A (broken line in FIG. 1) for a front windshield 11 in a vehicle (not shown) such as an automobile by a single long wiper blade 12. Is a so-called panta wiper device that can be wiped off, and includes two arms (wiper arms).

  The wiper device 10 includes an electric motor 13 that is driven to rotate in response to an operation signal from a wiper switch or the like (not shown) in the vehicle, and the electric motor 13 is fixed to a vehicle frame (not shown). It has been. The electric motor 13 swings and drives the first pivot shaft 14 via a not-shown interlocking mechanism (link mechanism) or the like. The first pivot shaft 14 is rotatably provided on the vehicle frame, and the second pivot shaft 15 is also disposed at a predetermined distance (for example, 24 mm) from the first pivot shaft 14. It is provided in a freely rotatable manner.

  One end side of the first arm head 16 is fixed to the first pivot shaft 14 through a bolt or the like (not shown), while one end side of the second arm head 17 is also shown on the second pivot shaft 15. It is fixed via bolts that do not. On the other end side (the right side in FIG. 1) of each of the arm heads 16 and 17, one end side of the main arm 18 and the sub arm 19 (also referred to as a wiper retainer) is the front side in FIG. It is connected via pins 20 and 21 (see FIG. 2 (a)) so as to be rotatable in the direction of approaching or separating from each other.

  A coil spring 22 (see FIG. 2B) is mounted between the first arm head 16 and the main arm 18, and the wiper blade 12 is against the windshield 11 by the tension of the coil spring 22. The contact is made with a predetermined pressing force. A coil spring is not mounted between the second arm head 17 and the sub arm 19.

  On the other end side (right side in FIG. 1) of the main arm 18 and the sub arm 19, a substantially L-shaped arm piece 23 rotates via a first bearing 24 and a second bearing 25 (see FIG. 3). It is connected freely. As shown in FIG. 2 (b), the distal end side of the main body portion 23a of the arm piece 23 is formed so as to be folded back in a substantially U shape, and the connection method with the wiper blade 12 is a so-called U hook method. It has become. However, the connection method between the arm piece 23 and the wiper blade 12 is not limited to the U-hook method as described above, and an E-clip method in which the screws are connected and fixed with screws or other connection methods may be employed. Here, the wiper arm in the present invention is composed of the first and second arm heads 16 and 17, the main arm 18, the sub arm 19 and the arm piece 23, and the arm body in the present invention is the main arm 18 and the sub arm 19. And an arm piece 23.

  As shown in FIG. 3, the main arm 18 and the sub arm 19 have a substantially U-shaped cross section, and include a pair of side walls 18a, 18b and 19a, 19b, respectively, and the pair of side walls 18a, 18b and 19a. , 19b are connected by upper walls 18c and 19c. Each arm 18 and 19 opens toward the front windshield 11, that is, the wiping surface.

  A first tongue piece portion extends from the side wall 18a to the side wall 18a between the front end and the base end of the main arm 18 as an arm body (in the present embodiment, a substantially intermediate portion of the main arm 18). The tongue portion 26 is integrally formed, and the proximal end portion 26a (the broken line portion in FIG. 3) has an angle of approximately 90 degrees so that the distal end side of the first tongue piece portion 26 faces the side wall 18b. It is bent by. Thereby, the opposing surface 26b which opposes a wiping surface is formed in the 1st tongue piece part 26. As shown in FIG. On the left side in FIG. 3 on the side wall 18a of the main arm 18, a second tongue piece portion 27 is integrally formed in the same manner as the first tongue piece portion 26. An end portion of the coil spring 22 is hooked to form a support portion that supports the coil spring 22.

  As shown in FIG. 3, a distal-side washer nozzle (second washer nozzle) 28 is attached to the proximal end side of the main body 23 a on the wiping surface side of the arm piece 23, and the distal-side washer nozzle 28 is attached to the distal-side washer nozzle 28. Are provided with three nozzles 28a, 28b, 28c. The front end washer nozzle 28 is integrally formed with a rubber hose pipe joint 28d. The rubber hose pipe joint 28d is connected to the end of a rubber hose 29 through which the washer fluid flows. The rubber hose 29 is disposed along the inner side of the main arm 18, and the first and second tongue pieces 26, 27 formed on the inner side of the coil spring 22 of the main arm 18 and the side wall 18a. Further, the third tongue piece portion 30 formed on the side wall 18b of the main arm 18 prevents the rubber hose 29 from dropping from the inside of the main arm 18.

  A connection hole (engagement portion) for mounting an intermediate washer nozzle (washer nozzle, first washer nozzle) 31 as shown in FIGS. 4A and 4B in the first tongue piece portion 26. 26c, 26c are provided, and when the intermediate washer nozzle 31 is attached to the first tongue piece portion 26, a recess 26d is provided as an escape portion for escaping the central conduit 31b of the intermediate washer nozzle 31.

  4 (a) and 4 (b) are a front view and a side view showing the washer nozzle of the wiper device of the present invention, and FIG. 5 shows a state in which the washer nozzle of FIGS. 4 (a) and 4 (b) is attached to the main arm. The central sectional views shown are respectively shown. As shown in FIGS. 4A and 4B, the intermediate washer nozzle 31 includes a main body 31a, a central conduit 31b through which the washer fluid circulates, and a hose connecting portion that branches the washer fluid into the central conduit 31b. The main pipe line 31c is integrally formed of a resin material such as plastic. On the first arm head 16 side of the main pipe line 31c, the inside of the coil spring 22, the second tongue piece portion 27 formed on the side wall 18a, and the inside of the main arm 18 from the first arm head 16 side are connected. An arm head side rubber hose 29a arranged so as to be along is connected, and a pipe joint side rubber hose 29b extending to the rubber hose pipe joint 28d via the third tongue piece 30 is provided on the arm piece 23 side of the main pipe line 31c. Are connected (see FIG. 3). The main body portion 31a is provided with a variable nozzle 32 that can freely adjust the spray angle of the washer liquid to the front windshield 11, and the main body portion 31a further includes a connection hole 26c of the first tongue piece portion 26, Engaging claws 33 and 33 are integrally formed as legs engaging with 26c. Here, the engaging claws 33, 33 of the main body 31a are inserted into the connection holes 26c, 26c of the first tongue piece 26, respectively, and fitted together, as shown in FIG. The intermediate washer nozzle 31 can be attached to the first tongue piece portion 26 with one touch so that the opposing surface 26b of the first tongue piece portion 26 is in close contact.

  Next, the operation of the embodiment of the present invention configured as described above will be described in detail with reference to FIG. FIG. 6 is a perspective view showing a state where washer liquid is sprayed from the wiper arm of the wiper device of the present invention.

  As shown in FIG. 1, when an operator operates a wiper switch (not shown) provided in the vehicle, an operation signal for the wiper switch is sent to a control device (not shown), and a drive current is supplied to the electric motor 13 accordingly. Supplied. When the electric motor 13 is driven to rotate, the first pivot shaft 14 swings through an interlocking mechanism (not shown). When the first pivot shaft 14 swings, the main arm 18 and the arm piece 23 swing through the first arm head 16. At this time, the sub arm 19 is interlocked via the arm piece 23, and the sub arm 19 swings through the second arm head 17 with the second pivot shaft 15 as the rotation center. By such a swinging motion of the main arm 18 and the sub arm 19, the arm piece 23 operates so as to rotate on the front windshield 11, and thus the wiper blade 12 mounted on the main body portion 23 a of the arm piece 23. However, the wiping range A can be wiped off.

  When the operator operates the wiper switch to operate the washer device, the washer fluid is sent from the washer tank (not shown) installed in the engine room to the rubber hose 29 via the electric pump (not shown). Then, the washer liquid sent to the arm head side rubber hose 29a is sent to the front end side washer nozzle 28 through the pipe joint side rubber hose 29b via the intermediate washer nozzle 31, and the variable nozzle 32 and the front end side of the intermediate washer nozzle 31 are sent. Jetted from the nozzles 28a, 28b, 28c of the washer nozzle 28 as shown in FIG. 6, and sprayed on the surface of the front windshield 11 serving as a wiping surface. In this way, the washer liquid can be sprayed toward the wiping portion of the wiper blade 12 regardless of the wiping position of the wiper blade 12. In addition, as a washer liquid, the thing which uses methanol for preventing freezing as a main ingredient, and added the cleaning agent and the rust preventive agent is used.

  According to the embodiment of the present invention configured as described above, the tongue piece portion 26 formed by bending the base end portion 26a extending from the side wall 18a of the main arm 18 constituting the wiper arm is integrally provided. Since the intermediate washer nozzle 31 is attached to the tongue piece 26, it is not necessary to provide a cutout in the main arm 18 in order to attach the intermediate washer nozzle 31, thereby reducing the rigidity of the wiper arm. Therefore, the size of the wiper blade 12 can be increased.

  Further, even if the wiper blade 12 is enlarged, the rigidity of the wiper arm is further improved by combining the fact that the notch is not provided and the base end portion 26a of the first tongue piece portion 26 is bent. Since high rigidity can be achieved, even if the front windshield 11 and the wiper blade 12 are operated from a dry contact state, it is possible to prevent the wiper arm from being bent and deformed by the frictional resistance. Accordingly, since the wiper arm is less likely to be distorted, it is possible to prevent uneven wiping.

  Further, since the intermediate washer nozzle 31 is mounted on the facing surface 26b of the first tongue piece 26 facing the front windshield 11, the position of the washer liquid closer to the surface of the front windshield 11 via the intermediate washer nozzle 31. The intermediate washer nozzle 31 can be disposed in a place where it is difficult to see from the outside, and the appearance can be improved.

  Further, since the first tongue piece portion 26 has the connection hole 26c with which the engaging claw 33 provided in the intermediate washer nozzle 31 is engaged, the intermediate washer nozzle 31 is brought into one touch with respect to the first tongue piece portion 26. It is possible to fix the assembly workability and to improve the assembly workability.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above embodiment, the wiper device according to the present invention is applied to a panter type wiper device having one wiper blade. However, the present invention is not limited to this, and a pair of (two ) It can be applied to other types of wiper devices such as a tandem type and an overlap type equipped with a wiper blade. In this case, the wiper device according to the present invention may be applied to each of the two wiper arms that form a pair.

  In the above embodiment, the intermediate washer nozzle 31 is engaged with the engaging claw 33 in the connection hole 26c of the first tongue piece portion 26 and is mounted with one touch. The invention is not limited to this, and the legs of the washer nozzle are engaged with the engaging portions of the tongue pieces and then attached by screws, or the washer nozzle legs are attached using adhesive means such as adhesive or double-sided tape. It may be attached by engaging with the engaging portion of the tongue piece.

  Furthermore, in the above-described embodiment, the arm body according to the present invention is configured by the main arm 18, the sub arm 19, and the arm piece 23. However, the present invention is not limited to this, and the arm (arm retainer) The present invention can also be applied to a wiper device having an arm piece integrally formed with an arm piece or an arm without a sub arm.

  Further, in the above embodiment, the first tongue piece portion 26 as the tongue piece portion is formed by bending the base end portion 26a at an angle of about 90 degrees so that the distal end side thereof faces the side wall 18b. However, the present invention is not limited to this, and if there is a dimensional allowance between the wiper arm and the windshield, for example, considering the maintainability of the washer nozzle, the bending angle can be freely set. It is good.

  Further, in the above embodiment, the wiper device according to the present invention is applied to the wiper device 10 for wiping the front windshield 11. However, the present invention is not limited to this, and the wiper for wiping the rear windshield is used. It can also be applied to a device.

It is a figure which shows the wiper apparatus of this invention. (A), (b) is the front view and side view which show the wiper arm single-piece | unit of the wiper apparatus of this invention. It is the perspective view which looked at the wiper arm simple substance in Drawing 2 from the windshield side. (A), (b) is the front view and side view which show the washer nozzle of the wiper apparatus of this invention. FIG. 5 is a central sectional view showing a state where the washer nozzles of FIGS. 4A and 4B are attached to a main arm. It is a perspective view which shows the state which is spraying washer liquid from the wiper arm of the wiper apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wiper apparatus 11 Front windshield 12 Wiper blade 13 Electric motor 14 1st pivot shaft (pivot shaft)
15 Second pivot shaft (pivot shaft)
16 First arm head 17 Second arm head 18 Main arm (wiper arm, arm main body)
18a, 19a Side wall 18b, 19b Side wall 18c, 19c Upper wall 19 Sub arm (wiper arm, arm body)
20, 21 pin 22 coil spring 23 arm piece (arm body)
23a Body 24 First bearing 25 Second bearing 26 First tongue piece (tongue piece)
26a Base end part 26b Opposing surface 26c Connection hole (engagement part)
26d recess 27 second tongue piece 28 distal end washer nozzle (second washer nozzle)
28a, 28b, 28c Nozzle 28d Rubber hose fitting 29 Rubber hose 29a Arm head side rubber hose 29b Pipe fitting side rubber hose 30 Third tongue piece 31 Intermediate washer nozzle (washer nozzle, first washer nozzle)
31a Main body part 31b Central pipe line 31c Main pipe line (hose connection part)
32 Variable nozzle 33 Engaging claw (leg)
A Wiping range

Claims (4)

A wiper device comprising: a wiper blade for wiping a wiping surface of a vehicle; and a wiper arm to which the wiper blade is rotatably connected to one side and fixed to a pivot shaft provided on the other body,
The wiper arm is
An arm head whose one end is fixed to the pivot shaft;
An arm main body rotatably connected to the other end side of the arm head and having a pair of side walls and an upper wall and opening toward the wiping surface;
A tongue piece formed integrally with the arm main body, extending from one side wall of the arm main body, and being bent toward the other side wall of the arm main body;
A wiper device, comprising: a washer nozzle attached to the tongue piece and spraying a washer liquid onto the wiping surface. A wiper blade for wiping the wiping surface of the vehicle;
A wiper device comprising: a wiper blade rotatably connected to one side; and a wiper arm fixed to a pivot shaft provided on a vehicle body on the other side,
The wiper arm is
An arm head whose one end is fixed to the pivot shaft;
An arm main body rotatably connected to the other end side of the arm head and having a pair of side walls and an upper wall and opening toward the wiping surface;
Provided between the distal end and the base end of the arm main body, extending integrally from one side wall of the arm main body, and formed by bending the base end portion toward the other side wall of the arm main body. Tongue part,
A hose disposed from the vehicle body to the wiper arm;
A first washer nozzle that is attached to the tongue piece and has a pair of hose connection portions that connect the hose that sprays the washer fluid onto the wiping surface;
The hose on the arm head side is connected to one of the hose connecting portions, and the hose connecting the other hose connecting portion is connected to a second washer nozzle provided at the tip of the arm body. Wiper device characterized by.   The wiper apparatus according to claim 1 or 2, wherein the washer nozzle is mounted on a facing surface of the tongue piece that faces the wiping surface.   The wiper device according to any one of claims 1 to 3, wherein the tongue piece portion has an engaging portion with which a leg portion provided on the washer nozzle engages.

Images