JPS5831723Y2 - Automotive wiper device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a wiper device for an automobile.

In an automobile wiper device, a stay supporting a blade is connected to a driving arm via a connecting device.

This connection method can be roughly divided into two types.

In other words, there are two methods: a channel-shaped holder is attached to the top of the stay with rivets, etc., and the arm is inserted into the holder from the longitudinal direction of the stay to connect the stay and the arm (hereinafter referred to as the edge insertion method); There is a method (hereinafter referred to as side lock method) in which a pin protruding from the side is fitted into a fitting hole provided on the stay side so that the longitudinal direction of the arm and the longitudinal direction of the stay are parallel. be.

Compared to the former, the latter can reduce the overall height of the wiper device; it is less likely to obstruct the driver's field of view and is also advantageous for storage.

However, with the side lock type, the center line of the tip of the arm for applying pressure to the blade and the center line in the longitudinal direction of the blade are shifted to the side, which causes twisting force to act on the blade and cause glass failure. The force applied to the surface becomes uneven, which may adversely affect the wiping performance.

That is, for example, Japanese Utility Model Publication No. 52-18821 discloses a horizontal insertion type connection holder in which a first channel portion for fixing an arm and a second channel portion for holding a blade stay are integrally formed. However, in this case,
The center lines of both channel parts have to be shifted from each other, so the center line of the tip of the arm and the center line of the blade driven by it in the longitudinal direction are shifted laterally. Twisting force is applied to the blade, and the force applied to the glass surface becomes uneven, which tends to cause uneven wiping.

If the holder is bent in this way and the arm and blade are connected via the holder, the driving part (arm) and the driven part (
The center of movement with the blade (blade) will not coincide with the center of movement, causing a problem in wiping performance.

In order to solve this problem, the present inventors previously proposed a wiper device shown in FIGS. 1 and 2.

This wiper device has an opening d on the top surface of the stay b, and a holder C is fitted into this opening, and
Holder C is connected to arm a and leaf spring f using rivets, etc., and holder C is fitted into the stay through opening d of stay b, and stay b and holder C are connected.
are connected by pin e, and the plate spring f is engaged with the groove e' of pin e to maintain the connected state between stay b and arm a, and the tip of plate spring f protruding from the tip of holder C By lifting the plate spring f and removing it from the groove e' of the pin e, it is possible to pull out the pin e and release the connection between the stay b, the holder C, and the arm a.

According to this configuration, it is possible to match the center line of the tip of the arm with the longitudinal center line of the blade, but the arm a
Because the bent part a' crosses the stay b diagonally,
As shown in Fig. 1, a part of the upper surface of the stay that the bent part a' of the arm touches had to be molded into a shape that is lowered by a step, and the holder C still protrudes from the stay b by a certain height l. Since it has no choice but to be installed in the current state, the driver's field of vision is obstructed accordingly.

Also, when replacing the wiper blade, the pin e must be attached and removed, and in that case, the pin e must pass through two holes b' in the stay b and two holes C' in the holder C. However, there is a problem in that it takes time to attach and detach, and the pin e is easily lost.

The present invention further improves the wiper device shown in FIGS. 1 and 2 to reduce the overall height of the wiper device, has a simple structure, and allows the wiper blade to be attached and detached simply and easily. The purpose is to provide a wiper device for automobiles that can

In order to achieve the above-mentioned purpose, the present invention provides an opening on the upper surface of the stay, fits a holder into this opening, connects the tip of the holder to the stay with a rivet, and , a notch is formed in one side wall of the stay near the rear end of the holder, and the arm has a tip that is inserted and locked into the holder, and a fold that bends diagonally outward from the tip. A bent portion and an arm body connected to the bent portion are shaped, the tip of the arm is inserted and locked into the holder, and the bent portion of the arm is fitted into the notch of the stay to form the arm. It is characterized in that the main body is led out to the outside of the stay.

An embodiment of the wiper device of the present invention is shown in Figs. 3 to 9 below.
This will be explained with reference to the figures.

As shown in FIG. 3, the automotive wiper device of the present invention includes a stay 2 that supports a wiping member (rubber ribbon), and a wiper arm 3 that drives the stay 2 to cause the wiping member 1 to perform a wiping operation. It is equipped with

In the illustrated example, the wiping member 1 is held by a pair of sub stays 11.11 via a ribbon holder, and the sub stays 11.11 are held by the main stay 2.

The connecting portion 2' between the stay 2 and the arm 3 is shown in FIGS. 4 to 6.
It is shown enlarged in the figure.

That is, in the present invention, an opening is provided on the upper surface of the stay 2, a channel-shaped holder 4 is fitted into the opening, and the tip side of the holder and the stay 2 are connected by a knob 5. , Rivet holder 4 5
It is installed so that it can rise and fall with respect to the stay 2 with the center at the center.

A notch 21 is provided in one side wall of the stay 2 close to the rear end of the holder 4.

The arm 3 also includes a distal end portion 3a that is inserted and locked into the holder 4, a bent portion 31 that is bent diagonally outward from the distal end portion 3a, and an arm body that continues to the rear end of the bent portion. 3b.

The size of the deviation between the tip 3a and the arm body 3b is such that when the tip 3a is inserted and locked in the holder 4, the arm body 3b
b is located outside the side wall of the stay 2.

Furthermore, when the tip of the arm 3 is inserted into the holder 4, the holder 4 and the arm 3 are fixed, and when the detachment operation is performed, the arm 3 can be pulled out from the holder 4.

It is preferable to use the conventional vertical insertion type structure as is.

That is, as shown in FIG. 9, the leaf spring 6 is attached to the holder 4.
One end is fixed with a rivet 7, an engaging part 61 is provided in a part of the leaf spring, and a recessed part 32 is provided in the lower surface of the arm 3.
When the arm 3 is inserted into the holder 4, the engaging part 61 of the leaf spring 6 falls into the recessed part 32 of the arm 3, fixing the holder 4 and the arm 3, and the rear end of the leaf spring 6 When pressed downward in the figure, the engagement portion 61 of the leaf spring is disengaged from the recessed portion 32, allowing the arm to be removed.

In addition, 33 is a protrusion provided on the upper surface of the arm 3, and 41 is a guide protrusion that guides the protrusion 33.

Since the wiper device of the present invention has the above-described configuration, the arm 3 is held in a state where the rear end side of the holder 4 is slightly raised.
When the tip 3a of the holder 4 is inserted and locked into the holder 4 and the holder 4 is tilted down, the holder 4 is fitted into the stay 2 and the upper surface of the holder 4 and the upper surface of the stay 2 are aligned as shown in FIG. , the arm 3 has its bent portion 31 fitted into the notch 21 of one side wall of the stay 2, and the arm body 3b is disposed along the outer wall of the stay 2, and the arm 3 also fits into the notch 21 of the side wall of the stay 2. be within the height range.

In this way, the present invention provides an opening on the top surface of the stay, fits the holder into this opening, connects the front end of the holder to the stay with a rivet, and attaches the rear end of the holder to the stay. A notch is formed in one side wall of the adjacent stay, and on the other hand, the arm has a bent part that is bent diagonally outward from the tip that is inserted into the holder and is continuous with the bent part. and an arm body, the tip of the arm is inserted and locked into the holder, and the bent part of the arm is fitted into the notch of the stay so that the arm body is led out to the outside of the stay. Therefore, although the stay has a simple structure without any special processing as shown in Figure 1, when the wiper arm and wiper blade are assembled, the arm and holder protrude above the stay, causing the driver to There is no risk of obstructing the field of view, and the center line of the tip of the arm matches the longitudinal center line of the blade, improving wiping performance.
Furthermore, the blade can be attached and detached very simply and easily, just like the conventional vertical insertion method.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts of a wiper device previously proposed by the present inventor, and FIG. 2 is a sectional view taken along line III in FIG. 1. Figures 3 to 9 show an example of the implementation of the present invention, Figure 3 is a perspective view, Figure 4 is an enlarged perspective view of the main part, Figure 5 is a top view of the main part, and Figure 6 is a view from another direction. Perspective view of main parts, Figures 7 and 8
The figures are sectional views taken along lines VII--VII and II--■ in FIG. 4, respectively, and FIG. 9 is a schematic side sectional view of a main part. 1... Wiping member, 2... Stay, 21
...Notch, 3...Wiper arm,
3a...Arm tip, 3b...Arm body, 31...Arm bending part, 4...
...Holder, 5...Rivet, 6...
・Board fly.

Claims (1)

[Scope of utility model registration request] An automobile wiper device including a stay that supports a wiping member and a wiper arm that drives the stay,
An opening is provided on the upper surface of the stay, a holder is fitted into the opening, the tip side of the holder is connected to the stay with a rivet, and one side wall of the stay near the rear end of the holder is provided with an opening. On the other hand, the arm has a tip portion that is inserted and locked into the holder, a bent portion that is bent diagonally outward from the tip portion, and an arm body that is continuous with the bent portion. and the distal end of the arm is inserted and locked into the holder, and the bent part of the arm is fitted into the notch so that the arm body is led out to the outside of the stay. Features of automotive wiper device.