JPS5863552A - Protective device of wiper blade - Google Patents

Abstract

PURPOSE:To surely lift and lower a blade, by sliding and engaging an arm receiving member to an arm, providing the arm receiving member in the vicinity of a shuttling mition stop end of the wiper arm and guiding said receiving member in such a manner that the wiper blade is separated from a wiped surface. CONSTITUTION:A guide member 9 is fixed to a car body 6, and sloped guide grooves 9c, diagonally formed for a base seat 9b of the guide member 9, are formed in side walls 9a of the guide member 9. While a wiper arm receiving member 11 is fitted between the side walls 9a of the guide member 9 through rollers 12, 13 guided along the guide grooves 9c, accordingly, the wiper arm receiving member 11 can be guided to the direction gradually separated from a wiped surface. The receiving member 11 is normally positioned to a wiper arm by a spring 10. Further a sloped surface 11a, slidably contacted with the wiper arm 1, and protruded part 11b, receiving the arm 1, are formed to the receiving member 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiper device for an automobile, and more particularly to a wiper blade protection device suitable for protecting a wiper blade that can be stored in a bonnet when wiping is stopped.

Figures 1 and 2 show a mechanism (for example, the 55-50
812) is an explanatory shell showing the operating state and storage state of the wiper blade 2, in particular, of the wiper device having the wiper device (Japanese Patent Publication No. 812).

That is, during the wiping operation, the angle β shown in FIG.
During this period, the wiper arm 1 swings around the swing shaft 4'1, and the wiper blade 2 wipes the 70-ton glass 5. However, when wiping is stopped, the wiper arm 1 and the wiper blade are removed by a wiper arm storage mechanism (not shown). 2 further rotates around the pivot shaft 4 by an angle a from the position A□ shown in FIG. 1, and is stored in the bonnet 6 shown in FIG. Stop.

In this case, during wiping, the wiper blade 2 constantly applies a considerable pressing force to the 70-ton glass 5 by a spring (not shown) attached to the wiper arm 1.
Even in the retracted state, that is, the state shown in FIG. 2, substantially the same pressing force is applied to the vehicle body 6 side.

For this reason, the wiper blade 2 is easily deformed and cracked before the comparative fishing rod is used, making the essential wiping operation incomplete. Furthermore, there are various problems such as the wiper blade 2 easily adhering to the vehicle body 6 in the hot summer sun.

3 to 5 show a wiper blade protection device 7 as an example of a conventional device for protecting the wiper blade 2 described above.

That is, in the installed state, this wiper blade protection device 7 is inclined at an angle smaller than the inclination angle of the windshield as shown in FIG.
The nuclear wiper blade protection device 7 is attached to the swing shaft 4 of the wiper arm 1 as shown in FIG.
It is located relatively close to.

Therefore, wiper arm 1 and wiper blade 2
When moving from position A1 to position A, that is,
When moving in the direction of arrow B in Figure 3, the wiper arm 1 contacts the inclined guide part 7a of the wiper blade protector 7, and in this state slides on the inclined guide part 7a, as shown in Figure 4. The wiper blade 2 is lifted and stopped in the state 7 where it is separated from the vehicle body 6 side.

In addition, when using the wiper arm 1 from the state shown in Figure 4.
On the other hand, the wiper blade 2 slides down on the inclined guide portion 7a, and as shown in FIG. 3, the wiper blade 2 comes into pressure contact with the vehicle body 6, and the wiper blade 2 again performs the wiping operation of the windshield 5.

However, the following conventional wiper blade protection device 1
7 has the disadvantage that when the wiper arm 1 contacts and slides on the inclined guide portion 71, an unpleasant front tube may occur due to friction, and the wiper arm 1 may be damaged at the contact portion. As mentioned above, the installation position is relatively close to the swing axis 4 of the wiper arm 1 (Fig. 5).
Therefore, when lifting the wiper blade 2 shown in Figure @4 above, a large load is applied between the wiper arm 1 and its swing shaft 4, which tends to cause looseness. The wiper blade 2 has various drawbacks, such as not sliding into contact with the wiper blade and the wiper blade 2 not lifting up.

In addition, other than the wiper blade protection device 7 described above, there are protection devices that are directly attached to the wiper arm 1 or wiper blade 2 side, but all of these have the fatal drawback of obstructing visibility. ing. There is also the following model in which the swing shaft 4 is modified, but this has the drawback of increasing costs.

This invention eliminates all the shortcomings of the conventional wiper blade protection device described above, and also allows the wiper blade 2″f to be separated from the vehicle body 6 more reliably and smoothly when not in use, and to be able to separate the wiper blade 2″f from the vehicle body 6 more reliably and smoothly when in use (also when in use). It is an object of the present invention to provide a wiper blade protection device that can be smoothly lowered onto a vehicle body 6.

Therefore, the wiper blade protection device of the present invention includes an arm receiving member that engages and slides with the arm near the reciprocating movement stopper of the arm, and guides the arm receiving member in a direction that gradually separates from the wiping surface. and a guide member for separating the blade from the wiping surface.

Embodiments of the present invention will be described in more detail below with reference to the drawings.

@Figures 6 to 9 show a wiper blade protection device 8t- provided near the end of the reciprocating motion of the arm 41 as an embodiment of the present invention.
show.

FIG. 6 shows a state in which the wiper blade 2 is separated from the umbrella body 6 side and stored in the bonnet 6 due to the action of the wiper blade protection device 8 of the present invention.

Here, the wiper blade protection device 1li8 will be described in detail based on FIGS. 7 to 9. In the figure, reference numeral 9 indicates a wiper blade 2 for guiding a wiper arm receiving member 11, which will be described later.
A guiding member is shown for separating the guided member 9 from the wiping surface.
The side walls 9m, 9a are formed with inclined guide grooves 9c, 9c which are inclined with respect to the base 9b, and the side wall 9d is formed with a seat surface 9c for positioning one end of the spring 10. Friend, an elastic hook-shaped locking portion 9ff is provided on the bottom surface of the guide member 9, and a hole 6a formed in the vehicle body 6 is provided.
It is completely fixed by inserting the locking portion 9f (see FIGS. 8 and 9). In this case, it can also be fixed with bolts and nuts, or with a strong surface adhesive, and by providing a pedestal on the vehicle body 6 side, more stable mounting can be achieved.

Further, the wiper arm receiving member 11 has an inclined surface 111 on which the wiper arm 1 contacts and slides, and a protrusion 11b for receiving the cough wiper arm It, as will be described later in the upper side of FIG.
A seat 11a for positioning the other end of the spring 10 is completely formed at the lower left end in FIG.
, forming 11 ft.

In this case, a spring or the like (not shown) is interposed between the roller shafts 12m and 12b of the roller 2, so that the roller shafts 12m and 12b can always protrude from and be freely inserted into the opening 12. Also, by interposing a similar spring etc. for the fourth roller 16, the roller shaft 13m
, 13b are always projected from the roller 3 and can be inserted freely.

Thus, this wiper blade protection device 8
1:.

One end of the ring 10 is placed against the seat surface 11eK of the wiper arm receiving member 11, and the other end is placed against the seat surface 9 of the guide member 90.
・It has nine configurations (see Figures 8 and 9).

As a result, the wiper arm receiving member 11 is attached to the spring 100.
When the wiper arm receiving member 11 receives a force, it is normally located at the position closest to the wiper arm 1 of the inclined guide grooves 9c and 9a (see Fig. 8@).When the wiper arm receiving member 11 receives an appropriate force in the direction to the left in Fig. 7, the roller 12 and 16 each roller shaft 12m
, 12b and 13m, IJSb is inclined guide #9c, 9
The wiper arm receiving member 11 slides while being guided by the wiper arm receiving member 11, until it reaches the closest position to the seat surface 9 (see FIG. 9).

Note that it is desirable to use a spring 10 made of something resistant to oxidation, such as a stainless steel alloy. In addition, by using a resin material as the wiper arm receiving member 11, the wiper arm 1 which will be described later
It is possible to suppress the occurrence of the occurrence of contact and sliding on the inclined surface 11a.

The wiper blade retaining device 8 described above is installed at a position relatively far from the swing axis 4 of the wiper arm 1, as shown in FIG. 6, to suppress the load on the wiper arm 1.

Next, the operation of the wiper blade protection device 8 in this case will be explained based on FIGS. 8 and 9.

FIG. 8 shows that the wiper arm 1 and the wiper blade 2 are connected to the wiper blade storage mechanism (not shown) as shown in FIG. 1 A1.
This shows the state immediately before the wiper arm 1 contacts the inclined surface 11m of the wiper arm receiving member 11 when moving from the position to the position A, that is, when moving in the direction of arrow C in FIG. 8, and after that contact, The wiper arm 1 slides on the inclined surface 11a and the protrusion 11b? Press in the 8th direction.

As a result, the p-ra 12,1! I acts on the wiper arm receiving member 11 and the wiper arm 1. The wiper blade 2' slides integrally in the direction of the arrow in FIG. 8, the wiper blade 2 is lifted and separated from the vehicle body 6, and then stops in the state shown in FIG. 9.

When the wiper blade 2 is used, the wiper arm 1 is driven in the direction of arrow C in FIG. 8 from the state shown in FIG. 9, and as a result, the wiper arm 1. The wiper blade 2 and the wiper arm receiving member 11 slide in the direction opposite to the arrow direction in FIG.
The wiper blade 2 descends onto the vehicle body 6@ and wipes the windshield 5 again.

The lifting and lowering of the wiper blade 2 toward the vehicle body 6 by the wiper blade protection device 8 described above is achieved by making the wiper arm receiving member 11 slidable along the inclined guide grooves 9e and 9c of the guide member 9 as described above. This is done reliably and smoothly. The spring 10 is interposed between the wiper arm 1 and the wiper arm holder i.
The contact sliding noise with the IS material 11 is alleviated, the friction is also significantly reduced, and the wiper arm 1 is not damaged.

As explained above, according to the wiper blade protection device of the present invention, the structure includes a wiper arm receiving member that engages and slides with the wiper arm, and a core wiper arm receiving member that is disposed near the reciprocating motion stop end of the wiper arm. Since the blade is provided with a guide member that guides the blade in a direction that moves away from the surface and separates the blade from the wiping surface, various excellent effects are obtained as follows.

That is, the unpleasant contact sliding noise and friction with the companion wiper arm 1, which have been problems in the conventional wiper blade protection device 7, can be effectively eliminated by making the wiper arm receiving member slidable along the guide member as described above. relaxation,
Wiper arm 1
Even if the wiper arm 1 is positioned relatively close to the swing axis 4, the load on the wiper arm 1 is effectively alleviated and eliminated, so that the wiper arm 1' does not lose its strength. In addition, since the scissor holder is not directly attached to the wiper arm 1 or wiper blade 2, it does not obstruct visibility, and the structure is simple and inexpensive.
9 The wiper blade 2 is surely and smoothly lifted and separated from the vehicle body 6 to prevent deformation of the wiper blade 2 due to the suppression of the wiper arm 1, cracking of the wiper blade 2 due to this deformation, and furthermore, prevention of the wiper blade 20 from adhering to the vehicle body 6 side.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the wiper blade in the wiping and stopped state, Figure 2 is an explanatory diagram showing the wiper blade in position A in Figure 1 pressing against the vehicle body, and Figures 3 to 5 are conventional diagrams. FIG. 6 is an explanatory diagram showing the structure and operation of an example of a wiper blade protection device according to the present invention. An explanatory diagram showing a state in which the wiper blade is lifted from the vehicle body side and stored under the bonnet by a wiper blade retaining device as an embodiment; FIG. 7 is an exploded perspective view showing the structure of the wiper blade pupil retaining device; FIG. 8.9 is an explanatory diagram showing the effect. 1... Wiper arm, 2-... Wiper blade, 5-
... Windshield, 8... Wiper blade protection device, 9... Guide member, 11... Arm receiving member. Patent applicant Nissan Motor Co., Ltd.

Claims (1)

[Claims] (1) In a wiper device in which a blade attached to a reciprocating arm is reciprocated on a wiping surface, an arm receiving member that engages with and slides on the arm is located near the end of the reciprocating motion of the arm. and a guide member that guides the cough arm receiving member in a direction away from the wiping surface to separate the blade from the wiping surface.