Wiping device for glass surfaces of motor vehicles

• US 6,634,056 B1
• Filed: 06/28/2001
• Issued: 10/21/2003
• Est. Priority Date: 10/28/1999
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: De Block, Peter
• Primary Examiner(s): Graham, Gary K.
• Application Number:
  US09/869,474
• Time in Patent Office: 845 Days
• Field of Search: 152/503.2, 152/503.61, 152/504.3, 152/504.4
• US Class Current: 15/250.32
• CPC Class Codes: B60S 1/3849 Connectors therefor; Connection to wiper arm; Attached to blade
• CPC Class Codes: B60S 1/3851 Mounting of connector to blade assembly
• CPC Class Codes: B60S 1/3879 placed in side grooves in the squeegee
• CPC Class Codes: B60S 1/40 Connections between blades and arms
• CPC Class Codes: B60S 1/4041 the channel-shaped end comprising a pivot pin mounted between the side walls

Abstract

A wiper apparatus is proposed, which serves to clean windows of motor vehicles. The wiper apparatus (10) has a driven wiper arm (12) guided on one end on the motor vehicle, on the free end (11) of which arm an elongated wiper blade (14) that can be pressed with a wiper strip (18) against the window (20) is separably pivotably connected via a connection device (16), which on the side toward the arm has a pivot bolt (40) whose hinge axis extends essentially transversely to the longitudinal direction of the wiper blade (14) and which toward the wiper blade, in a middle portion of the wiper blade on its side remote from the window, has a coupling part (34) with a bearing recess (54) for the pivot bolt (40), which can be introduced into the bearing recess (54) via a mounting channel (48), and the insertion opening (52) of the mounting channel is disposed on the side of the coupling part (34) remote from the window (20). The mounting channel (48) has two partial channels (50 and 51), which form an angle aα of less than 180° with one another, and the one partial channel (50) has the insertion opening (52) for the pivot bolt (40), while the other partial channel (51) opens into the bearing recess (54), and if furthermore in the operating position of the wiper apparatus, a shoulder (65) oriented transversely to the wiper blade (14) and securing the pivot bolt and its bearing recess, of the wiper arm (12) cooperates with a counterpart shoulder (66), associated with it of the wiper blade (14).

Claims

1. A wiper apparatus for windows of motor vehicles with a driven wiper arm, wherein an elongated wiper blade is separably connected by means of a connection device, wherein the wiper blade has at least two sides and wherein a wiper strip is arranged on one of the at least two sides, wherein the connection device includes a pivot bolt arranged on the wiper arm, wherein said pivot bolt defines a hinge axis that extends substantially transverse to a longitudinal direction of the wiper blade, wherein the connection device includes a coupling part, wherein said coupling part is arranged on a side of the wiper blade opposite the wiper strip, wherein the coupling part has a bearing recess and a mounting channel with an insertion opening for the pivot bolt, wherein the pivot bolt is insertable into the bearing recess via the mounting channel, wherein the coupling part has at least two sides, wherein one of the at least two sides faces toward the wiper strip and the other of the at least two sides faces away from the wiper strip, wherein the insertion opening of the mounting channel is arranged on the side of the coupling part facing away from the wiper strip, wherein the mounting channel has two part channels, wherein the two part channels form an angle α

of less than 180°

to one another, wherein one of the two part channels has the insertion opening for the pivot bolt and the other part channel opens into the bearing recess, wherein the connecting device has a shoulder on the wiper arm that is oriented transversely to the wiper blade, wherein said shoulder secures the pivot bolt in the bearing recess, wherein the shoulder cooperates with a counterpart shoulder of the wiper blade, and wherein the shoulder is rigidly arranged on the wiper arm relative to the pivot bolt.

2. The wiper apparatus of claim 1, characterized in that the other partial channel (51), opening into the bearing recess (54), extends in a plane that is at least approximately parallel to the window (20).

3. The wiper apparatus of claim 1, characterized in that the one partial channel (50), having the insertion opening (52), extends in a plane perpendicular to the window (20).

4. The wiper apparatus of claim 1, characterized in that the two partial channels (50 and 51) form an angle α

of 90°

with one another.

5. The wiper apparatus of claim 1, characterized in that the counterpart shoulder (66) of the wiper blade (14) is embodied on the coupling part (34).

6. The wiper apparatus of claim 1, characterized in that the coupling part (34) is disposed on a band side, remote from the window (20), of a band-like elongated, spring-elastic support element (32) for the wiper strip (18).

7. A wiper apparatus for windows of motor vehicles with a driven wiper arm, wherein an elongated wiper blade is separably connected by means of a connection device, wherein the wiper blade has at least two sides and wherein a wiper strip is arranged on one of the at least two sides, wherein the connection device includes a pivot bolt arranged on the wiper arm, wherein said pivot bold defines a hinge axis that extends substantially transverse to a longitudinal direction of the wiper blade, wherein the connection device includes a coupling part, wherein said coupling part is arranged on a side of the wiper blade opposite the wiper strip, wherein the coupling part has a bearing recess and a mounting channel with an insertion opening for the pivot bolt, wherein the pivot bold is insertable into the bearing recess via the mounting channel, wherein the coupling part has at least two sides, wherein one of the at least two sides faces toward the wiper strip and the other of the at least two sides faces away from the wiper strip, wherein the insertion opening of the mounting channel is arranged on the side of the coupling part facing away from the wiper strip, wherein the mounting channel has two part channels, wherein the two part channels form an angle α

of less than 180°

to one another, wherein one of the two part channels has the insertion opening for the pivot bolt and the other part channel opens into the bearing recess, wherein the connecting device has a shoulder that is oriented transversely to the wiper blade, wherein said shoulder secures the pivot bolt in the bearing recess, wherein the shoulder cooperates with a counterpart shoulder of the wiper blade, wherein the coupling part (34) is made from an elastically yielding plastic, and wherein the mounting channel (58) has a partial constriction (53) in a width of the mounting channel (58), wherein a width of the partial construction is less than the diameter of the pivot bolt (40).

8. A wiper apparatus for windows of motor vehicles with a driven wiper arm, wherein an elongated wiper blade is separably connected by means of a connection device, wherein the wiper blade has at least two sides and wherein a wiper strip is arranged on one of the at least two sides, wherein the connection device includes a pivot bolt arranged on the wiper arm, wherein said pivot bold defines a hinge axis that extends substantially transverse to a longitudinal direction of the wiper blade, wherein the connection device includes a coupling part, wherein said coupling part is arranged on a side of the wiper blade opposite the wiper strip, wherein the coupling part has a bearing recess and a mounting channel with an insertion opening for the pivot bolt, wherein the pivot bold is insertable into the bearing recess via the mounting channel, wherein the coupling part has at least two sides, wherein one of the at least two sides faces toward the wiper strip and the other of the at least two sides faces away from the wiper strip, wherein the insertion opening of the mounting channel is arranged on the side of the coupling part facing away from the wiper strip, wherein the mounting channel has two part channels, wherein the two part channels form an angle α

of less than 180°

to one another, wherein one of the two part channels has the insertion opening for the pivot bolt and the other part channel opens into the bearing recess, wherein the connecting device has a shoulder that is oriented transversely to the wiper blade, wherein said shoulder secures the pivot bolt in the bearing recess, wherein the shoulder cooperates with a counterpart shoulder of the wiper blade, wherein the securing shoulder (65) of the wiper arm (12) is disposed between the pivot bolt (40) and a guided end of the wiper arm (12).

9. A wiper apparatus for windows of motor vehicles with a driven wiper arm, wherein an elongated wiper blade is separably connected by means of a connection device, wherein the wiper blade has at least two sides and wherein a wiper strip is arranged on one of the at least two sides, wherein the connection device includes a pivot bolt arranged on the wiper arm, wherein said pivot bold defines a hinge axis that extends substantially transverse to a longitudinal direction of the wiper blade, wherein the connection device includes a coupling part, wherein said coupling part is arranged on a side of the wiper blade opposite the wiper strip, wherein the coupling part has a bearing recess and a mounting channel with an insertion opening for the pivot bolt, wherein the pivot bold is insertable into the bearing recess via the mounting channel, wherein the coupling part has at least two sides, wherein one of the at least two sides faces toward the wiper strip and the other of the at least two sides faces away from the wiper strip, wherein the insertion opening of the mounting channel is arranged on the side of the coupling part facing away from the wiper strip, wherein the mounting channel has two part channels, wherein the two part channels form an angle α

of less than 180°

to one another, wherein one of the two part channels has the insertion opening for the pivot bolt and the other part channel opens into the bearing recess, wherein the connecting device has a shoulder that is oriented transversely to the wiper blade, wherein said shoulder secures the pivot bolt in the bearing recess, wherein the shoulder cooperates with a counterpart shoulder of the wiper blade, wherein the wiper arm (12) has a U-shaped cross section on a free end (11), wherein two legs (37) of the U extend, fitting over longitudinal sides of the coupling part (34), from the base of the U (38) to the window (20), and that the ends of the pivot bolt (40) are retained on the two legs (37) of the U.

10. The wiper apparatus of claim 9, characterized in that the securing shoulder (65) of the wiper arm (12) is embodied on a jacket face of a support bolt (58), wherein said support bolt (58) is disposed with spacing (59) from the pivot bolt (40) and is retained with two ends at the two legs (37) of the U of the wiper arm (12).

11. The wiper apparatus of claim 10, characterized in that the counterpart shoulder (66) of the wiper blade (14) is embodied on the side wall, remote from the pivot bolt (40), of a transverse groove (55) that is disposed in the coupling part (34) and is open on the side of the coupling part remote from the window (20).

12. The wiper apparatus of claim 11, characterized in that the transverse groove (55) extends from its opening to the groove bottom (56) along a circular path, wherein a radius (60) of the circular path corresponds to the spacing (59) between the pivot bolt (40) and the support bolt (48).

13. A wiper apparatus for windows of motor vehicles with a driven wiper arm, wherein an elongated wiper blade is separably connected by means of a connection device, wherein the wiper blade has at least two sides and wherein a wiper strip is arranged on one of the at least two sides, wherein the connection device includes a pivot bolt arranged on the wiper arm, wherein said pivot bold defines a hinge axis that extends substantially transverse to a longitudinal direction of the wiper blade, wherein the connection device includes a coupling part, wherein said coupling part is arranged on a side of the wiper blade opposite the wiper strip, wherein the coupling part has a bearing recess and a mounting channel with an insertion opening for the pivot bolt, wherein the pivot bold is insertable into the bearing recess via the mounting channel, wherein the coupling part has at least two sides, wherein one of the at least two sides faces toward the wiper strip and the other of the at least two sides faces away from the wiper strip, wherein the insertion opening of the mounting channel is arranged on the side of the coupling part facing away from the wiper strip, wherein the mounting channel has two part channels, wherein the two part channels form an angle α

of less than 180°

to one another, wherein one of the two part channels has the insertion opening for the pivot bolt and the other part channel opens into the bearing recess, wherein the connecting device has a shoulder that is oriented transversely to the wiper blade, wherein said shoulder secures the pivot bolt in the bearing recess, wherein the shoulder cooperates with a counterpart shoulder of the wiper blade, wherein the securing shoulder (65) of the wiper arm (12) is embodied on a jacket face of a support bolt (58), wherein said support bolt is disposed with spacing (59) from the pivot bolt (40) and is retained with two ends at two legs (37) of a U-shaped cross section of the wiper arm (12), wherein a diameter of the support bolt (58) is less than a diameter of the pivot bolt (40).