JPH0545584Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to improvements in wipers for automobiles.

BACKGROUND ART Automotive wipers are known to have a configuration in which a wiper blade wiping rubber rod is attached to a wiper blade base rod with one or more wiper blade wiping rubber rods.

Problems that the invention aims to solve The well-known automobile wipers have the above configuration and have achieved some results in rain control, but they may be completely useless during the cold season in cold regions. . In other words, if you drive during heavy snowfall or when the interior of the car is not very heated,
Snow, moisture in the atmosphere, etc. adhere to the wiper blades as ice, making it difficult to remove it naturally while driving.
Even if it is activated, it does not function as a wiper and visibility becomes narrow. Therefore, if the wiper blades start to freeze, the driver immediately stops the vehicle, taps the wiper blades against the windshield to remove the broken ice, and then resumes driving again after the wiper blades have started to function as wipers. Such work to remove crushed ice from wiper blades needs to be done frequently during the cold season in cold regions.

This idea was created in view of the above circumstances.
To provide a wiper for an automobile for use in a cold region, which can function as a normal wiper when operated inside the car and can automatically remove crushed ice by slamming the wiper blade against a front window.

Means for Solving the Problems In order to achieve the above object, the present invention connects a wiper blade to a rotatable wiper arm so that it can come into contact with and separate from the front window, and a push rod is provided in the wiper arm. Further, a lever is disposed in the wiper arm so that one end thereof is intermittently pushed down by a push rod and the other end is lifted up at the same time, and the other end of the lever is lifted up in the wiper blade. The present invention proposes a means in which a separation angle adjustment rod is provided to move the wiper blade away from the front window, and a tension spring is provided across the wiper arm and the wiper blade to bring the wiper blade into contact with the front window.

Function: Since the present invention comprises the above-mentioned means, when the wiper arm is rotated, the wiper blade rotates and wipes the front window, functioning as a normal wiper. If the push rod is operated during the rotation, the lever is intermittently activated, intermittently pushing the separation angle adjusting rod, and intermittently causing the rotating wiper blade to separate from the front window. When the push rod is released from the lever, the resilient force of the tension spring pulls the wiper blade, which had been away from the front window, and slams it against the front window. Unless the operation of the push rod is stopped, the wiper blade rotates and repeatedly moves away from the front window and slams against the front window, and the ice adhering to the wiper blade is automatically crushed and removed. In addition, if the push rod is operated without rotating the wiper arm, the wiper blade will repeatedly move away from the front window in its fixed position and be slammed against the windshield, automatically removing the ice that had adhered to the wiper blade. The crushed ice is removed.

Embodiment The wiper W includes a wiper arm 1 which is rotatably attached to a rotation shaft 7 disposed near the front window of the vehicle body, and a wiper arm 1 which is pivotally connected to the wiper arm and can come into contact with and separate from the front window. It consists of a wiper blade 2. The wiper arm 1 has a motor 8 attached to one side thereof, a transmission mechanism 9 therein for transmitting the driving rotation of the motor to the push rod 3, and a lever 4 operated by the push rod 3. The push rod 3 is rotatably provided at a portion of the transmission mechanism 9 in the wiper arm 1 closest to the wiper blade 2, and intermittently pushes down the lever 4 as the transmission mechanism 9 rotates. As shown in FIG.
An upright portion 402 whose one end is disposed within the rotation range of the pusher rod 3 and is erected at the other end of the oblique rod portion 401.
When the upper end of the wiper arm 1 is pivoted to the portion of the wiper blade 1 closest to the wiper blade 2, and one end of the diagonal rod portion 401 is intermittently pushed down by the pusher rod 3, the other end of the diagonal rod portion 401, In other words, the upright portion 402 is configured to rotate and lift up around the pivoting portion, thereby pushing up the separation angle adjusting rod 5. As shown in FIGS. 2 and 4, the lever 4 moves one end of a diagonal rod portion 401 located within the rotation range of the pusher rod 3 to a portion of the wiper blade 2 near the pusher rod 3 in the wiper arm 1. The tension spring 10 provided at the top always biases the pusher rod 3 in the opposite direction of rotation (upward in FIG. 4), and as shown in FIG. When the push rod 3 comes off one end of the diagonal rod portion 401 after being pushed down against the elastic force of the tension spring 10, the one end of the diagonal rod portion 401 is pushed down by the elastic force of the tension spring 10. The structure is such that the upright portion 402, which has been pulled vigorously and rotated to the imaginary line position in FIG. 4, returns to the solid line position (original position) in the same figure, and the tension spring 6 can elastically contract. The separation angle adjustment rod 5 is
It is a member for separating the wiper blade 2 from the front window, and also serves as a member for separating the wiper blade 2 from the front window.
This is a member for adjusting the angle at which the wiper blade 2 separates from the front window.A threaded rod is provided at the part of the wiper blade 2 closest to the wiper arm 1 so as to be able to move forward and backward. By moving the lever 4 forward toward the other end of the lever 4 to bring it closer, the separation angle becomes larger, and by moving it back and away from the other end of the lever 4, the separation angle becomes smaller. Configure it as follows. The tension spring 6 is a member for keeping the wiper blade 2 in contact with the front window at all times, and is disposed from a portion of the wiper arm 1 near the wiper blade 2 to the wiper blade 2, and is disposed so that its elastic force can be adjusted freely. Set, push rod 3
When the wiper blade 2 depresses one end of the lever 4, the wiper blade 2 separates from the front window, thereby extending against the spring force, and at the same time as the push rod 3 comes off the lever 4, it springs and contracts. The wiper blade 2, which was separated from the front window, slams into the front window. By repeatedly moving the wiper blade 2 away from the front window and slamming it against the front window in this way, the ice attached to the wiper blade 2 is crushed and removed.

The wiper operation for removing crushed ice is configured to be performed by turning on a switch from the driver's seat to drive the motor 8, and the motor drive is controlled even when the wiper blade 2 is rotating. The structure is such that it can be performed even when rotating.

Effects of the invention Since the present invention is configured as described above, the pusher rod that has started operating operates the lever intermittently, causing the wiper blade to move away from the front window, and at the same time extends the tension spring, so that the pusher rod starts operating the lever. At the same time as the wiper blade detaches from the windshield, the tension spring that had been expanding elastically contracts and the wiper blade, which had been separated from the windshield, slams into the windshield. Therefore, by repeatedly moving the wiper blade away from the front window and then slamming it against the front window, the ice adhering to the wiper blade can be automatically crushed and removed. If only the wiper arm is rotated without operating the push rod, the front window can be wiped as a normal wiper. Further, since the push rod can be operated whether the wiper arm is rotating or not, it is convenient to be able to remove crushed ice at any time depending on the state of ice build-up.

[Brief explanation of the drawing]

Figure 1 is a front view of a passenger car equipped with the wiper of the present invention, Figure 2 is an enlarged side view of the main parts, and Figure 3 is a
FIG. 4 is an enlarged longitudinal sectional front view taken along line 3-3 in the figure, FIG. 4 is a longitudinal sectional side view taken along line 4-4 in FIG. 3, and FIG. 5 is a front view of the wiper blade. In the figure, W...wiper, 1... wiper arm, 2... wiper blade, 3... push rod, 4
... Lever, 5 ... Separation angle adjustment rod, 6 ... Tension spring, 8 ... Motor, 9 ... Transmission mechanism, 10
...Tension spring.

Claims (1)

[Scope of utility model registration request] A wiper W includes a wiper arm 1 rotatably disposed near a front window of a vehicle body, and a wiper blade 2 connected to the front window so as to be able to come into contact with and separate from the front window. A motor 8 is provided on one side of the part near the center of motion,
A transmission mechanism 9 for transmitting the driving rotation of the motor to the push-down rod 3 is installed in the wiper arm 1, and the push-down rod 3 is rotatably provided in a portion of the transmission mechanism 9 near the wiper blade within the wiper arm. In the arm 1, there is a lever 4 with a substantially rectangular shape on the side nearer to the wiper blade than the push rod 3.
, one end of the diagonal rod portion 401 is placed within the rotation range of the pusher rod 3, and one end of the diagonal rod portion 401 is always maintained in rotation of the pusher rod 3 by a tension spring 10 provided near the pusher rod in the wiper arm 1. The wiper arm 1
A separation angle adjustment rod 5 is provided in a portion of the wiper blade 2 that is closest to the wiper blade, and a separation angle adjustment rod 5 is provided in a portion of the wiper blade 2 that is movable forward and backward, so as to come into contact with and separate from the lower end side of the upright portion 402 of the lever 4. This wiper for an automobile includes a tension spring 6 which can be freely opposed to each other and extends from a side part of a lever in a wiper arm 1 to a lower part of a wiper blade 2.