JPS6361229B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiper device used for wiping a cleaning surface, and in particular, a wiper blade is attached to a wiper arm that swings back and forth, and a cleaning fluid supply pipe is provided in the wiper arm to supply the cleaning fluid. The present invention relates to a wiper device configured as described above.

An example of this type of wiper device is a wiper device for vehicles, which wipes glass surfaces such as the front window glass, rear window glass, headlights, doors, fender mirrors, etc. used for. In such a wiper device, it is desirable to have a structure that allows cleaning liquid to be supplied to the glass surface for reasons such as making up for the lack of water during light rain or immediately after rain, and for removing an oil film attached to the glass surface. It's normal.
In this case, there are many structures in which a cleaning liquid nozzle is provided below the glass surface, and the wiper blade is oscillated back and forth while jetting the cleaning liquid from this nozzle toward the glass surface, but the distance between the nozzle and the glass surface Since this is too large, it has the disadvantage that the cleaning liquid cannot be applied well to the glass surface when the direction of the nozzle is slightly deviated or when it is exposed to strong wind. Therefore, attempts have been made to provide a cleaning liquid supply pipe in the wiper arm, and to spray the cleaning liquid directly onto the glass surface from a nozzle provided at the tip of the supply pipe near the joint between the wiper arm and the wiper blade. In this case, although the cleaning liquid will not be sprayed beyond the glass surface, because the distance between the glass surface and the nozzle is too small, the cleaning liquid will be concentrated on a local part of the glass surface and will be sprayed unevenly. This causes problems such as the sliding load increases in areas where cleaning liquid is not supplied, and when trying to increase the distance between the glass surface and the nozzle, the height from the glass surface to the top of the nozzle increases. When the height of the wiper blade is increased and at the same time a change in orientation occurs in the wiper arm, the spraying direction of the cleaning liquid is likely to be greatly affected.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to spray cleaning liquid over a wide range of cleaning surfaces such as glass surfaces without increasing the height of the wiper blade. It is an object of the present invention to provide a wiper device that can increase the cleaning effect of a surface and suppress an increase in sliding load on a wiper blade.

The wiper device of the present invention includes a wiper arm that swings back and forth, a wiper blade to which a blade rubber is attached via a clip fixed to the wiper arm and a lever rotatably provided to the clip, and the wiper arm is provided with a cleaning liquid. In a wiper device provided with a supply pipe, the supply pipe is provided with a nozzle that sprays the cleaning liquid flowing through the supply pipe in a direction approximately parallel to the cleaning surface, and the sprayed cleaning liquid is directed onto the cleaning surface near the blade rubber. The present invention is characterized in that a reflector is provided in front of the injection hole of the nozzle, spaced apart from the nozzle, and integrally engaged with the lever.

Hereinafter, embodiments of the present invention will be described in more detail based on the drawings.

1 to 8 are diagrams showing an embodiment of the present invention, in which 1 indicates a wiper arm and 2 indicates a wiper blade. The wiper arm 1 includes an arm piece 3, a retainer 4 is fixed to one end of the arm piece 3, and a bayonet clip 5 is fixed to the other end by screws 6. An arm head 11 is pivotally connected to the other end of the retainer 4 by a rivet 10 via an inner bush 8 and an outer bush 9. This arm head 11
has a structure that allows it to be fitted and fixed to a reciprocating swing shaft (not shown). Also, one end of the hook 13 is hooked to the roller pin 12 provided on the arm head 11, and the other end of the tension spring 14 hooked to the other end of the hook 13 is hooked to the locking hole 3a of the arm piece 3. The wiper arm 1 and the wiper blade 2 are pressed against the cleaning surface (glass surface) 15 (see FIG. 5) with appropriate pressure by the tension of the tension spring 14. Further, a rivet 17 is fixed to the retainer 4 so that it can come into contact with the protrusion 11a of the arm head 11, thereby regulating the amount of movement of the wiper arm 1 in the direction away from the cleaning surface 15. Furthermore, a cleaning water supply pipe 21 is supported by the arm piece tube 18 on the arm piece 3, and another supply pipe 23 is connected to one end of this supply pipe 21 via a nipple 22. is passed through the tension spring 14 and fixed to the hook 13 by a tube 24, and a cap 26 for introducing washing water is attached via another nipple 25.

The bayonet clip 5 is pivotally fixed to the rivet 31 by caulking the part A in FIG. 5 of the rivet 31 having the collar 31a.
As shown in the figure, the blade stopper 32, the primary lever 33 of the wiper blade 2, the secondary lever 34, the torsion spring 30, and the rivet plate 36 are inserted and fixed by caulking the part B in FIG. . This secondary lever 3
A blade rubber 39 is attached to the blade rubber 4 via a yoke 34' and a number of bird brakes 38. Note that the torsion spring 30 is provided to apply an appropriate pressing force to the primary lever 33. The rightward bent portion 32a in FIG. 5 of the blade stopper 32 has a nozzle 3 shown in FIG.
5 is fitted and fixed, and the blade stopper 32
It is latched onto the secondary lever 34 by the leftward bent portion 32b in FIG. Further, a reflector 37 shown in FIG. 8 is fitted and fixed to the leftward protrusion 36a in FIG. It is hooked to the burr lever 34. Therefore, the primary lever 33 and the secondary lever 3
4. The nozzle 35 and the reflector 37 are integrally connected to the bayonet clip 5 through the rivet 31.
That is, it rotates relative to the wiper arm 1. The amount of rotation at this time is regulated by the blade stopper 32 coming into contact with the edge of the bayonet clip 5. As shown in FIG. 7, the nozzle 35 has a cleaning liquid circulation hole 35a inside, and a connection port 35b is provided at one end so that it can be connected to the end of the supply pipe 21. In the illustrated example, two injection holes 35c are formed in the communication hole 35a. Further, the nozzle 35 is formed with a fitting hole 35d for fitting and fixing the blade stopper 32 as described above. In addition, the reflector 37
As shown in FIG. 8, the rivet plate 36
It has a structure in which the reflector 37 is integrally fitted and fixed.
and rivet plate 36.
1 through holes 37a and 36c are formed, and the reflector 37 is formed with an inclined surface 37b having an inclination angle θ.

When using the wiper device configured as described above, when cleaning water is supplied through the cleaning water guiding cap 26 and the cleaning water supply pipes 23 and 21, this cleaning water is jetted out from the injection holes 35c and 35c of the nozzle 35. , this cleaning water is applied to the pivot joints of the primary and secondary levers 33 and 34 and the blade rubber 3.
9, the direction is changed by the reflective surface 37b of the reflector 37 as shown in FIG. The cleaning surface 15 can be wiped well with the movement. At this time, even if the pivot angle of the wiper blade 2 with respect to the wiper arm 1 changes, the wiper blade 2, blade stopper 32, nozzle 35 and reflector 37
Since they move as one, the washing water can be sprayed without any problem.

In the embodiment described above, the nozzle 35 is fixed to one side of the wiper blade 2 (on the right side in FIG. 5), and
Although a case is shown in which the reflector 37 is fixed on the opposite side (left side in FIG. 5), the structure is not limited to this, and the cleaning liquid sprayed from the nozzle 35 is immediately If the cleaning liquid is reflected and reaches the cleaning surface (glass surface) 15 in a spread state, sufficient wiping can be performed.

FIGS. 9 to 11 show other embodiments of the present invention, in which the same parts as in the previous embodiment are given the same reference numerals. In this embodiment, the bayonet clip 5 is pivotally fixed by caulking the part C in FIG. 11 of the rivet 41 having the collar 41a, and a blade stopper 42 and a wiper blade are also provided on the other side of the rivet 41. The primary lever 33, secondary lever 34, torsion spring 30, and nozzle stopper 44 of No. 2 are fitted and inserted, and the nozzle 45 is inserted into the bent protrusion 44a of the nozzle stopper 44.
A reflector 47 is fitted onto the nozzle 45, and these are fixed to the rivet 41 using washers 48 and screws 49. In this case, the nozzle 45 has a cleaning liquid flow hole 45a and an injection hole 45c, and also has a cleaning liquid guide pipe 4.
5b. The guide pipe 45b has a length that penetrates between the primary and secondary levers 33, 34 and the blade rubber 39, and can be connected to the cleaning liquid supply pipe 21 at its end. Further, the reflector 47 also has a reflective surface 47b in this case.

Even in such a structure, when cleaning water is supplied from the supply pipe 21 with the swinging of the wiper blade 2, the cleaning liquid passes through the guide pipe 45b and the circulation hole 45a of the nozzle 45, and is injected from the injection hole 45c. As shown in the figure, after being deflected by the reflective surface 47b, the spray reaches the cleaning surface (glass surface) 15 with a relatively wide spray angle, thereby effectively wiping the cleaning surface.

Note that in each of the embodiments described above, the nozzle 3
5 and 45 show the case where two injection holes 35c and 45c are provided, but this number can be increased or decreased as appropriate. In addition, the inclined surfaces 37 of the reflectors 37, 47
b and 47b show the case of a single plane, but if this is a curved or inclined surface, for example, the cleaning water is deflected in the direction of the cleaning surface, and it is on the upper (or lower) side of the cleaning surface. You can also make it so that it is done in

Thus, in the above embodiment, the nozzles 35, 45, the primary lever 33, the secondary lever 34, and the reflector 3 are attached to the rivets 31, 41 fixed to the bayonet clip 5 of the wiper arm 3.
Since the nozzles 35, 47 are integrally pivotally connected and the nozzles 35, 45 are provided at positions corresponding to the height between the levers 33, 34 and the blade rubber 39, the nozzles 35, 45 It is possible to prevent an increase in the height of the wiper blade 2 due to the provision of the wiper arm 2, and at the same time, it is possible to keep the spraying position of the cleaning liquid constant even when a direction change occurs in the wiper arm 2 (orientation change). Further, by simply adding the supply pipe 21, nozzles 35, 45, and reflectors 37, 47, which are mainly made of rubber or synthetic resin, to the conventional wiper device, the cleaning surface 15 can be wiped very well. , it is possible to keep price increases low.

As described above, according to the present invention, since the reflector is provided integrally with the lever (for example, the secondary lever), even when the wiper blade rotates or bends due to a change in the curvature of the cleaning surface, The reflector should always be able to spray the appropriate cleaning liquid in response to the wiper blade, and also be able to spray the cleaning liquid over a wide range of surfaces to be cleaned, such as glass surfaces, without increasing the height of the wiper blade. The effect of wind pressure on the cleaning fluid can be suppressed during high-speed driving, which increases the cleaning effect on the cleaning surface and also suppresses the increase in sliding load on the wiper blade caused by the absence of cleaning fluid. It has excellent effects.

[Brief explanation of drawings]

1 and 2 are front and side views, respectively, of a wiper device according to an embodiment of the present invention, and FIGS. 3 and 4 are enlarged explanatory views of the wiper blade attachment portion of FIGS. 1 and 2, respectively. , FIG. 5 is a sectional view taken along the line -- in FIG. 3, FIG. 6 is an explanatory rear view of the wiper blade attachment part in FIG. 1, and FIGS. , - line sectional view and - line sectional view of Fig. 7b, Fig. 8a
~c is a plan view, a front view, and − of the reflector, respectively.
9 is an enlarged side view of a wiper blade mounting portion of a wiper device according to another embodiment of the present invention, and FIG. 10 is a rear partial sectional explanatory view;
FIG. 1 is a sectional view taken along the - line in FIG. 9. Bayonet clip (clip), 15... cleaning surface, 21, 23... supply pipe, 31, 41... rivet, 33... primary lever (lever),
34...Secondary lever (lever), 35,4
5... Nozzle, 35c, 45c... Injection hole, 3
7, 47... Reflector, 37b, 47b... Reflective surface.

Claims (1)

[Scope of Claims] 1. A wiper arm that swings back and forth, a wiper blade that has a blade rubber attached to it via a clip that is fixed to the wiper arm and a lever that is rotatably provided to the clip, and a wiper blade that has a blade rubber attached to the wiper arm through a lever that is rotatably provided on the clip. In a wiper device provided with a supply pipe, the supply pipe is provided with a nozzle that sprays the cleaning liquid flowing through the supply pipe in a direction approximately parallel to the cleaning surface, and the sprayed cleaning liquid is directed onto the cleaning surface near the blade rubber. A wiper device characterized in that a reflector is provided in front of an injection hole of the nozzle, spaced apart from the nozzle, and integrally engaged with the lever.