Wiper blade for cleaning screens in particular on motor vehicles

• US 6,944,905 B2
• Filed: 04/04/2001
• Issued: 09/20/2005
• Est. Priority Date: 05/29/2000
• Status: Expired due to Term

• Current Assignee: Robert Bosch LLC (Robert Bosch GmbH)
• Original Assignee: Robert Bosch GmbH
• Inventors: De Block, Peter, Wijnants, Peter
• Primary Examiner(s): Graham, Gary K.
• Application Number:
  US10/048,202
• Publication Number:
  US 20020133897A1
• Time in Patent Office: 1,630 Days
• Field of Search: 152/502.01, 152/504.3, 152/504.4, 152/503.61, 152/504.8
• US Class Current: 15/250.201
• CPC Class Codes: B60S 1/381 Spoilers mounted on the squeegee or on the vertebra
• CPC Class Codes: B60S 1/3879 placed in side grooves in the squeegee
• CPC Class Codes: B60S 1/3894 having a particular shape

Abstract

A wiper blade for cleaning motor vehicles is proposed, which is provided with a band-like, elongated, spring-elastic support element (12). The lower band surface (13) of the support element (12) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window (22), disposed on it so that the longitudinal axes of these two parts are parallel and the upper band surface (11) of the support element (12) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element, is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is comprised of an elastic material. A considerable weight savings for the wiper blade is achieved if the wind deflection strip (42, 142, or 242) has two diverging legs (44, 46), viewed in cross section, which are connected to each other at a common base (48) and whose free ends (50, 52) oriented toward the window (22) are supported on the wiper blade (10), and the attack surface (54) is embodied on the outside of the one leg (44).

Claims

1. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), wherein a lower band surface (13) of the support element oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), disposed on it so that the longitudinal axes of these two parts are parallel, wherein the wiper strip can be placed against a window, and wherein an upper band surface (11) of the support element (12;

30, 30) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, wherein the two diverging legs are connected to each other at a common base (48) and wherein free ends of the two diverging legs oriented toward the window (22) are supported on the support element of the wiper blade (10), and the attack surface (54) is embodied on the outside of the one leg (44) above the support element, and the legs (44, 46) form therebetween an angular hollow space that expands from an upper narrowest point of the base downwardly to the upper band surface of the support element (12;

30, 30) and are in contact with the upper band surface (11) of the support element said legs contacting the upper band surface at a location laterally spaced from said rubber-elastic wiper strip.

2. The wiper blade according to claim 1, wherein the profile of the cross section is the same over the entire length of the wind deflection strip (42).

3. The wiper blade according to claim 1, wherein the two legs (44, 48) of the wind deflection strip (142 or 242) are connected to each other by means of a wall (144 or 244) in the vicinity of the two wiper blade ends.

4. The wiper blade according to claim 3, wherein the wall (144) is aligned essentially perpendicular to the support element (12).

5. The wiper blade according to claim 3, wherein the outside (246) of the wall (244) encloses an acute angle (a) with the support element (12).

6. The wiper blade according to claim 1, wherein the free leg ends (50, 52) of the wind deflection strip (42, 142, or 242) are glued to the support element.

7. The wiper blade according to claim 1, wherein the free leg ends (50, 52) of the wind deflection strip (42, 142, or 242) are attached, preferably glued, to the support element (12) of the wiper blade (10).

8. The wiper blade according to claim 1, wherein the free leg ends (50, 52) of the wind deflection strip (42, 142, or 242), at least in sections, are provided with claw-like projections (56, 58), which suitably encompass the mutually opposed outer edge strips (36) of the support element (12).

9. The wiper blade according to claim 8, wherein a glued attachment is produced in the vicinity of the claw-like projections (56, 58).

10. The wiper blade according to claim 1, wherein the attack surface (54) of the wind deflection strip (42, 142, or 242) is embodied as a flute on the outer wall of the one leg (44).

11. The wiper blade according to claim 1, wherein a hardness of the material for the wind deflection strip (42) is at most 40 percent greater than the hardness of the material for the wiper strip (14).

12. The wiper blade according to claim 1, wherein a hardness of the material for the wind deflection strip (42, 142, or 242) is at most 20 percent greater than the hardness of the material for the wiper strip (14).

13. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), wherein a lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and wherein an upper band surface (11) of the support element has a wind deflection strip (42) disposed on it, wherein the wind deflection strip extends in a longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, wherein the two diverging legs are connected to each other at a common base (48) and wherein free ends of the two diverging legs oriented toward the window (22) are supported on the support element, and the attack surface (54) is embodied on the outside of the one leg (44), wherein the upper band surface (11) of the support element (12), in its middle section, includes a wiper blade part (15) for connecting the wiper blade (10) to a reciprocally driven wiper arm (16) and is supported, wherein an end cap (38) is respectively disposed at both ends of the support element (12), and wherein a section (40) of the wind deflection strip (42) is disposed between and in contact with each respective end cap (38) and the device piece (15).

14. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), whose lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and whose upper band surface (11) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, which are connected to each other at a common base (48) and whose free ends oriented toward the window (22) are supported on the support element, and the attack surface (54) is embodied on the outside of the one leg (44), wherein the two legs (44, 46) of the wind deflection strip (142 or 242) are connected to each other by means of a wall (144 or 244) in the vicinity of the two wiper blade ends, and wherein the wall (144 or 244) is provided with a recess (146 or 246) that is open at the edge oriented toward the window (22), wherein the width (148) of this recess is greater than the width (150) of the wiper strip (14) in a vicinity of the support element and its depth (152) reaches to the upper band surface (11) of the support element (12).

15. A wiper blade for cleaning windows, comprising

a band-like, elongated, spring-elastic support element (12), whose lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and whose upper band surface (11) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, which are connected to each other at a common base (48) and whose free ends oriented toward the window (22) are supported on the wiper blade (10), and the attack surface (54) is embodied on the outside of the one leg (44), wherein the free leg ends (50, 52) of the wind deflection strip (42, 142, or 242), at least in sections, are provided with claw-like projections (56, 58), which suitably encompass the mutually opposed outer edge strips (36) of the support element (12), and wherein the claw-like projections extend from the leg ends (50, 52) into a vicinity of a wall (154 or 254), and suitably encompass end regions (112) of the support element (12).

16. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), whose lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and whose upper band surface (11) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, which are connected to each other at a common base (48) and whose free ends oriented toward the window (22) are supported on the support element, and the attack surface (54) is embodied on the outside of the one leg (44), wherein the free leg ends (50, 52) of the wind deflection strip (42, 142, or 242), at least in sections, are provided with claw-like projections (56, 58), which suitably encompass the mutually opposed outer edge strips (36) of the support element (12), and wherein the claw surfaces (60) resting against the upper band surface (11) of the support element (12) have a greater width (62) than the claw surfaces (64) engaging the lower band side (13).

17. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), whose lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and whose upper band surface (11) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, which are connected to each other at a common base (48) and whose free ends oriented toward the window (22) are supported on the support element, and the attack surface (54) is embodied on the outside of the one leg (44), wherein the upper band surface (11) of the support element (12), in its middle section, the wiper blade part (15) of a device, which is for connecting the wiper blade (10) to a reciprocally driven wiper arm (16), is supported, wherein an end cap (38) is respectively disposed at both ends of the support element (12), wherein a section (40) of the wind deflection strip (42) is disposed between each respective end cap (38) and the device piece (15), and wherein the end caps (38) are provided with a flute (68), which extends in a projection of the flute of the attack surface (54) of the wind deflection strip.

18. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), whose lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and whose upper band surface (11) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, which are connected to each other at a common base (48) and whose free ends oriented toward the window (22) are supported on the support element, and the attack surface (54) is embodied on the outside of the one leg (44), wherein the upper band surface (11) of the support element (12), in its middle section, the wiper blade part (15) of a device, which is for connecting the wiper blade (10) to a reciprocally driven wiper arm (16), is supported, wherein an end cap (38) is respectively disposed at both ends of the support element (12), and wherein a section (40) of the wind deflection strip (42) is disposed between each respective end cap (38) and the device piece (15), and the wiper blade part (15) of the connecting device is provided with a flute (70), which extends in a projection of the flute of the attack surface (54) of the wind deflection strip (42).

19. A wiper blade for cleaning windows, comprising:

a band-like, elongated, spring-elastic support element (12), whose lower band surface (13) oriented toward the window (22) has an elongated, rubber-elastic wiper strip (14), which can be placed against the window, disposed on it so that the longitudinal axes of these two parts are parallel and whose upper band surface (11) has a wind deflection strip (42) disposed on it, which extends in the longitudinal direction of the support element (12), is provided with an attack surface (54) oriented toward the main flow of the relative wind, and is made of an elastic material, wherein the wind deflection strip (42, 142, 242) has two diverging legs (44, 46), viewed in transverse cross section, which are connected to each other at a common base (48) and whose free ends oriented toward the window (22) are supported on the support element, and the attack surface (54) is embodied on the outside of the one leg (44), and wherein the wiper strip (14) has a Shore hardness A of between 64 and 71, in particular 68, and the wind deflection strip (42) has a Shore hardness A greater than the wiper strip and is of between 70 and 78, in particular 72.