SU441182A1 - Wiper - Google Patents

Description

one

The invention relates to cleaning the outer surfaces of glass windows and windows from rain, splashes and snow, and can be used both with and without electrical heating.

Known wipers contain a drive with a drive roller and a lever with a brush associated with it.

However, the known wipers are cumbersome, have additional hinges and transition elements, and when frosting under certain conditions of operation of an object, they may be jammed.

The purpose of the invention is to change the angle of the glass.

This goal is achieved by the fact that on the drive roller of the windscreen wiper the drive coupling half is fixed, interacting with the driven coupling half and provided with moving stops located in arc slots made on the cylindrical surface of the driven coupling half, mounted coaxially with the driving coupling half and rigidly connected to the brush lever; movable stops made in the form of bolts.

In order to fix the position of the driven clutch relative to the drive one, the arc grooves are made with recesses for movable stops.

FIG. 1 shows a glass and a lever with a brush; in fig. 2 is a section along AA of FIG. one; in fig. 3-b is a section along BB, B-B, 1-D and D-D in FIG. 2

K. A wall 1 above the glass 2 is rigidly attached to a glass 3 of square section. It has a sleeve 4 with a flange in which the shaped hole a is made. In the hub 4, the axis 5 is rotatable,

from the outside, ending with a cone with tongs 5 and with the inside - square 7. Outside to the axis 5, screw 8 secures the lever with a brush 9. Driven coupling half 10 is mounted on the square 7 of axis D, and the grooves b are drilled at the top and bottom of it . The coaxiality of the driven coupling half with the drive unit is achieved by the introduction of the protruding part 11 into the hole of the driving half coupling 12, which is rigidly fastened on the screw 13 to the cone with slots

drive roller 14.

On the disk of the drive half coupling 12, which encloses the driven coupling half 10, on the vertical axis there are two pods 15 stops on the thread, engaging one

the coupling halves with the other when rotating.

The disk drive coupling half 12 has a cut g for the passage of the locking screw 16, planted on the threads in the driven coupling half 10. The proposed wiper works

in the following way.

When the wiper is turned on, the drive roller 14 rotates the leading coupling half 12 until the movable stops 15 (in the form of bolts) do not squash the transverse faces of the grooves b. In this case, the angular play between the leading and driven coupling halves is chosen, equal to -, where is the angle by which the standard obtrusion angle should be reduced to ensure a tilting in the electrically heated zone. Then, after engagement, the coupling half is driven, 10, through the axis 6, the turning lever with the brush 9 by an angle equal to

 :; -, where p is the obscure angle in the electrically heated zone.

During the reverse movement, the leading coupling half 12 selects an angular play, equal to - | - -

 a, while the stops 15 do not touch the opposite faces of the grooves b and after engagement, turn the lever with the brush by the angle v-a: pD to prevent the deployment of the brush

An angle greater than the angle — (under the pressure of the discharging air jets at high speeds of the vessel) the threaded hole of the driven coupling half 10 is screwed into the locking screw 16, the protruding part moving in the shaped hole a in the flange of the sleeve 4 by the angle p.

When operating the vessel in conditions of a positive outdoor temperature (no frosting), the stops are screwed into the recess in the slots b.

In this case, the coupling halves are rigidly connected, and the lever with the brush rotates at the nominal angle, the locking screw 16 is retracted and exits the hole in the sleeve 4. To release the screw and turn the coupling half 10

The coupling half 12 with the inverted locking screw 16, in the coupling half 12 is made a cutout g, calculated on the maximum angular displacement of the coupling half 10 relative to the coupling half 12.

Subject invention

Claims (3)

1. A windscreen wiper comprising a drive with a drive roller and a lever with a brush associated with it, characterized in that, in order to change the sweep angle of the glass, by the drive roller is rigidly fixed to the leading coupling half, which interacts with the driven half coupling and is equipped with movable stops located in arc grooves made on the cylindrical surface of the driven coupling half, mounted coaxially with the driving half coupling and rigidly connected with the brush lever. 2. Wiper according to claim. 1, characterized in that the movable stops are made in the form of bolts. 3. The wiper according to claim 2, characterized in that, in order to fix the position of the driven coupling half relative to the lead, the arc grooves are made with recesses for mobile stops. ig. 1 Fig.Z - (nn i 1 - i- I / / FigL i // 5. Fi E2: | iK-23 / po-aftl / r / I. J. w zner: search. 7 j cd W; $ 1 / -l-rv-- i-- #kt;:;,;; ir -itft i Fig. 6 Fig- 5