JPH0424263B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a link for a wiper device for a vehicle, which can easily connect a motor arm and a wiper link in the wiper device for a vehicle, for example. This relates to a joining method.

(Prior Art) As a conventional method for connecting links in a wiper device for a vehicle, there is a method described in, for example, Japanese Patent Application Laid-Open No. 136544/1982. This will be explained using a and b.

FIG. 6 shows a situation in which the other end of the motor arm 101, one end of which is fixed to the wiper motor 100, and one end of the wiper link 102 are to be coupled by the conventional link coupling method described above.
Figures a and b show the main parts of the wiper link 102 in Figure 6.

That is, as shown in FIGS. 7a and 7b, one end 102a of the wiper link 102 has a ball pin 10 provided at the other end of the motor arm 101.
A ball retainer 104 that can be fitted with the wiper link 102 is mounted on the wiper link 102 near the mounting portion of the ball retainer 104 and on the opening side of the ball retainer 104 as shown in FIG. A link-side locking portion 105 that can engage with a motor arm insertion hole 106 of the cowl front plate C is provided. The other end of the wiper link 102 is connected to a pivot arm (not shown).

The link side locking part 105 is formed by bending a metal plate, and as shown in FIG. 10
The wiper link 1 has a substantially semicircular protrusion 105b for easy engagement with the wiper link 1.
02 by rivets 107.

Therefore, in order to connect the wiper link 102 provided with such a link-side locking portion 105 and the motor arm 101, first, as shown in FIG. A pivot arm (not shown) is required, which is inserted into the cowl (in FIG. 6, the area above the cowl front plate C is inside the engine room, and the area below the cowl front plate C is inside the cowl) and connected to the wiper link 102. The link side locking portion 10 of the wiper link 102 is pivotally supported on the cowl upper plate according to the
5 is the motor arm insertion hole 1 provided in the cowl front plate C.
The wiper link 10 is engaged with the peripheral edge of the wiper link 10.
2 is temporarily fixed to the cowl front plate C. At this time, the opening of the ball retainer 104 attached to the one end 102a of the wiper link 102 is connected to the motor arm insertion hole 10 of the cowl front plate C.
Therefore, in this state, the ball pin 103 attached to the motor arm 101 of the wiper motor 100 is pressed from the engine room side to the opening of the ball retainer 104 as shown by the arrow. By fitting the motor arm 101 and the wiper link 1
Perform the connection with 02. After this connection is completed, the link side locking part 105 is removed from the motor arm insertion hole 106, the motor arm 101 is made to protrude into the cowl, and the wiper motor 100 is attached and fixed to the cowl front plate C.

(Problems to be Solved by the Invention) However, in the conventional link coupling method of a vehicle wiper device as described above, the link-side locking portion 105 of the wiper link 102 is inserted into the motor arm of the cowl front plate C. The ball retainer 10 is engaged with the hole 106 to be in a temporarily fixed state and exposed from the motor arm insertion hole 106 to the engine room side.
The motor arm 101 and the wiper link 102 were connected by directly pressing the ball pin 103 into the opening of the engine room from the engine compartment side. The pressing force for fitting is set to a large value to prevent the ball pins 103 from falling out of the ball retainer 104 and to prevent rattling between the two, so the operator who performs the fitting is required to This is by no means an easy task, and as a result, there is a problem in that the link engagement task cannot be carried out smoothly.

This invention has been made in view of the above-mentioned problems, and since it is possible to extremely easily fit the ball pin and the ball retainer,
It is an object of the present invention to provide a link coupling method for a wiper device for a vehicle, which allows a motor arm and a wiper link to be coupled very smoothly and improves work efficiency.

[Structure of the Invention] (Means for Solving the Problems) The link coupling method for a vehicle wiper device according to the present invention includes a wiper link connecting a ball pin attached to the other end of a motor arm whose one end is fixed to the output shaft of a wiper motor, and a wiper link. When the motor arm and the wiper link are rotatably connected by fitting a ball retainer provided at one end of the motor arm and capable of fitting with the ball pin, the wiper link is connected to the motor arm and an intermediate portion thereof. A link end locking portion capable of locking an end of the link is provided, and the opening of the ball retainer is brought into contact with the spherical portion of the ball pin, and one end of the wiper link is connected to the link end locking portion. By engaging with the stop portion and pressing the other end side of the wiper link in a direction in which the ball retainer and ball pin are fitted, the ball retainer and ball pin are fitted, and the fitting is completed. The motor arm and the wiper link are then rotatably coupled by rotating the wiper link to release the engagement between the end of the wiper link and the link end locking part. In particular, when fitting the ball pin and the ball retainer,
It is characterized by the use of moments of force.

(Example) The present invention will be explained below based on the drawings.

1 to 3 show the link connection method of a wiper device for a vehicle according to an embodiment of the present invention, step by step, and FIGS.
Figures a and b each show one end of a wiper motor and a wiper link provided with a motor arm used in this embodiment.

That is, as shown in FIGS. 4a and 4b, one end 2a of a motor arm 2 is fastened to an output shaft 1b protruding from the reduction gear portion 1a of the wiper motor 1 by a nut 1c. In addition, a ball pin 3 having a spherical portion 3a is caulked and fixed to the other end 2b of the motor arm 2, and a link end locking portion 4 is provided at an intermediate portion 2c between the two ends 2a and 2b. There is.

The link end locking part 4 is formed by bending a metal plate, and includes a fixing part 4a that is attached to the motor arm 2 by a rivet 5, and an upward direction (in FIG. 4a) from the fixing part 4a. An intermediate portion 4b extending toward the front in FIG. It has a shape consisting of. and,
The end face 4d of this locking part 4c and the intermediate part 4b
The inner and outer surfaces of each are arc-shaped with the ball pin 3 at the center. Note that this link end locking portion 4 can also be fixed together with the ball pin 3 by caulking or welding.

Reference numerals 6 and 7 in FIGS. 4a and 4b are a bracket for mounting the wiper motor 1 on the vehicle body and a rubber mat for absorbing vibrations.

On the other hand, as shown in FIGS. 5a and 5b, one end 10a of the wiper link 10 has a link that engages with a locking part 4c of a link end locking part 4 attached to the motor arm 2. The side locking portion 11 is integrally bent and formed, and this link side locking portion 1
A ball retainer 12 is attached to the center side of the ball 1.

The link-side locking portion 11 includes a locking piece 11a having a thin end portion, and a support portion 11b that positions the locking piece 11a below the one end portion 10a (inwardly in FIG. 5b). It consists of
The peripheral edge of the locking piece 11a is arcuate,
At this time, the curvature of the circular arc formed by the peripheral portion is larger than the curvature of the circular arc formed by the inner and outer surfaces of the intermediate portion 4b of the link end locking portion 4 provided on the motor arm 2 and the end surface of the locking portion 4c. There is.

The ball retainer 12 is made of a slightly flexible material such as synthetic resin, and has a spherical recess that can fit into the spherical part 3a of the ball pin 3 provided on the motor arm 2. 12a and an opening 12b whose diameter is slightly smaller than that of the spherical recess 12a, and the opening 12b is attached and fixed to the wiper link 10 by the brim 12c with the opening 12b facing the surface on the link side locking part 11 side. It has been done.

Furthermore, the other end (not shown) of the wiper link 10 is connected to a pivot via a ball retainer 12 similar to the ball retainer 12 described above and a pivot arm (not shown).

Therefore, the method of connecting the motor arm 2 provided in the wiper motor 1 described above and the wiper link 10 will be explained step by step with reference to FIGS. 1 to 3.

In addition, the symbols in Fig. 1, Fig. 2 a, and Fig. 3
CF is a cowl front plate, and in these figures, the upper side of the cowl front plate CF is the engine room side, and the lower side is the cowl C side, and both show the right side with respect to the traveling direction.

As shown in FIG. 1, the wiper motor 1 is connected to the output shaft 1 of the wiper motor 1 from the engine room side.
b and the motor arm 2 are made to protrude into the cowl C from the motor arm insertion hole 20 provided in the cowl front plate CF, and are attached and fixed by the mounting bracket 6, and from the service hole 21 shown by the imaginary line.
Insert the wiper link 10 into the cowl C.

Next, as shown in FIG. 2a, the opening 12b of the ball retainer 12 attached to one end 10a of the wiper link 10 is brought into contact with the spherical portion 3a of the ball pin 3 provided on the motor arm 2. In addition, the link side locking portion 11 of the wiper link 10
and the link end locking portion 4 of the motor arm 2 are engaged. At this time, although the operator cannot directly view the engagement, the link side locking portion 1
Since the locking piece 11a of 1 and the locking part 4c of the link end locking part 4 are formed to be easily engaged as described above, the above-mentioned engagement can be easily performed just by relying on the feel of the fingertips. be able to.

Therefore, in this engaged state, the wiper link 10
The other side is the direction in which the ball retainer 12 and the ball pin 3 fit together, that is, the cowl front plate
When pressed toward the CF side, a moment of force is applied with the engagement points of the locking parts 4 and 11 as fulcrums, so the spherical part 3a of the ball pin 3 and the ball are connected without any great force. It can fit into the spherical recess 12a of the retainer 12 (state shown by imaginary lines).

Then, as shown in FIG. 2b, after performing this fitting, the wiper link 10 is attached to the ball retainer 12.
is rotated with respect to the ball pin 3 through the link end locking portion 11 to release the engagement between the link side locking portion 11 and the link end locking portion 4 (state shown by the imaginary line).

Next, as shown in FIG. 3, with the motor arm 2 and the wiper link 10 rotatably connected, the pivot connected to the other end (not shown) of the wiper link 10 is connected to the cowl C (not shown). Attach to the cowl top plate that is not installed.

Note that since the mounting angle of the pivot differs depending on the vehicle model, the wiper link 10 may be connected at an angle with respect to the rotating surface of the motor arm 2. In this embodiment, the angle of the inclination is set to 8. The link end locking portion 4 and the link side locking portion 11 do not come into contact with each other during operation of the wiper device.

In addition, in this embodiment, since the link-side locking part 11 is configured to consist of the locking piece 11a and the support part 11b, it can be engaged without requiring a large space when engaging with the link-end locking part 4. Can be combined.

[Effects of the Invention] As explained above, according to the link connection method for a vehicle wiper device according to the present invention, a ball pin attached to the other end of a motor arm whose one end is fixed to the output shaft of the wiper motor and a wiper link are connected to each other. When the motor arm and the wiper link are rotatably connected by fitting a ball retainer provided at one end and capable of fitting with the ball pin, the motor arm and the wiper link are connected to the intermediate portion. A link end locking portion capable of locking an end of the wiper link is provided, the opening of the ball retainer is brought into contact with the ball pin and the spherical portion, and one end of the wiper link is connected to the link end locking portion. by engaging with and pressing the other end side of the wiper link in a direction in which the ball retainer and ball pin fit together, and after the fitting is completed, By rotating the wiper link and releasing the engagement between the end of the wiper link and the locking part for the link end, the motor arm and the wiper link are rotatably coupled. The retainer can be fitted extremely easily, the motor arm and the wiper link can be connected very smoothly, and the work efficiency can be significantly improved. bring about an effect.

[Brief explanation of drawings]

1 to 3 are explanatory diagrams sequentially showing the coupling steps in a link coupling method for a wiper device for a vehicle according to an embodiment of the present invention, and FIGS. 4a and 4b
5A and 5B are side views and plan views showing wiper motors equipped with motor arms used in the embodiments shown in FIGS. 1 to 3, and FIGS.
A side view and a plan view showing one end of the wiper link used in the embodiment shown in the figure, FIG. 6 is an explanatory diagram of the state of connection by the conventional link connection method of a vehicle wiper device, and FIGS. 7 a and b. 7 are a side view and a plan view showing a wiper link used in the conventional link coupling method shown in FIG. 6. FIG. 1...Wiper motor, 2...Motor arm, 3
... Ball pin, 3a ... Spherical part, 4 ... Link end locking part, 10 ... Wiper link, 10a ...
One end, 12...Ball retainer, 12b...
…Aperture.

Claims (1)

[Claims] 1. A ball pin attached to the other end of a motor arm with one end fixed to the output shaft of the wiper motor is fitted with a ball retainer provided at one end of the wiper link and capable of fitting with the ball pin, and the motor When the arm and the wiper link are rotatably coupled, a link end locking portion capable of locking the end of the wiper link is provided in the intermediate portion of the motor arm, and the opening of the ball retainer is connected to the ball. The wiper link is brought into contact with the spherical part of the pin and one end of the wiper link is engaged with the link end locking part, so that the other end of the wiper link is fitted into the ball retainer and the ball pin. The ball retainer and the ball pin are fitted together by pressing in the direction of the ball pin, and after the fitting is completed, the wiper link is rotated to engage the end of the wiper link with the link end locking part. By canceling the
A link coupling method for a wiper device for a vehicle, comprising rotatably coupling a motor arm and a wiper link.