Windscreen wiper device

Abstract

A windscreen wiper device for cleaning a windshield of a vehicle is provided. The windscreen wiper device includes a longitudinally extending wiper strip and at least one carrier element in engagement with the wiper strip for operatively supporting and biasing the wiper strip into a predetermined configuration. A base is non-removably coupled to the at least one carrier element and has an opening that extends therethrough to provide access to the at least one carrier element through the base. A connection device is removably secured directly to the at least one carrier element through the opening of the base for attachment with a wiper arm.

Claims

1. A method of making a windscreen wiper device comprising the steps of: preparing a wiper strip and at least one carrier element in engagement with the wiper strip to bias the wiper strip into a predetermined configuration; engaging a base having an opening with the at least one carrier element; engaging a connection device directly with the at least one carrier element through the opening in the base; and removing the connecting device from the at least one carrier element.

2. The method as set forth in claim 1 further including the step of disengaging the connection device from the at least one carrier element.

3. The method as set forth in claim 1 further including the step of engaging the connection device with the base.

4. The method as set forth in claim 3 wherein the connection device is secured to the base with a tongue and slot connection.

5. A method of making a windscreen wiper device comprising the steps of: preparing a wiper strip and at least one carrier element in engagement with the wiper strip to bias the wiper strip into a predetermined configuration; engaging a base having an opening with the at least one carrier element; engaging a connection device directly with the at least one carrier element through the opening in the base; and wherein the connection device includes a connector body with a pair of front holding elements, wherein said at least one carrier element is a pair of carrier elements, wherein each carrier element has a notch, and wherein said step of engaging a connection device with the carrier elements is further defined as inserting a pair of front holding elements through the notches of the carrier elements and sliding the connector body in a longitudinal direction to engage the front holding elements with the carrier elements.

6. The method as set forth in claim 5 wherein the connector body further includes a pair of back holding elements and wherein the step of engaging the connection device with the carrier elements further includes deflecting the back holding elements outwardly and rocking the connecting body downwardly and deflecting the back holding elements back inwardly to engage around opposite sides of the at least one carrier element.

7. The method as set forth in claim 6 wherein the connector body includes a pair of rear walls integrally connected with the back holding elements and wherein the step of deflecting the back holding elements outwardly is further defined as pinching the rear walls together to deflect the back holding elements outwardly.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other features and advantages of the present invention will be readily appreciated, as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:

(2) FIG. 1 is a wiper blade assembly constructed according to one exemplary embodiment;

(3) FIG. 2 is a fragmentary and perspective view showing a first connection device secured with a pair of carrier elements;

(4) FIG. 3 is a fragmentary and perspective view showing a second connection device secured with the pair of carrier elements;

(5) FIG. 4 is a fragmentary and perspective view showing a base coupled to the pair of carrier elements;

(6) FIG. 5 is a perspective and elevation view of the base;

(7) FIG. 6 is a perspective and elevation view of a connector body of the first connection device;

(8) FIG. 7 is a top elevation view of the exemplary connector body;

(9) FIG. 8 is a perspective and fragmentary view of exemplary connector body in engagement with the pair of carrier elements;

(10) FIG. 9 is a perspective and elevation view of an adapter of the first connection device;

(11) FIG. 10 is a fragmentary view of the pair of carrier elements and a connector body of the second connecting piece;

(12) FIG. 11 is a fragmentary view of the second connector body of the second connecting piece secured with the pair of carrier elements and with a stopper piece;

(13) FIG. 12 is a fragmentary view of the second connector body secured with the pair of carrier elements and with an adapter;

(14) FIG. 13 is a perspective view of a carrier element and a connector body of second exemplary embodiment of the wiper blade assembly; and

(15) FIG. 14 is a perspective and fragmentary view of a connection device secured to the carrier elements of the second exemplary embodiment of the wiper blade assembly.

DESCRIPTION OF THE ENABLING EMBODIMENT

(16) Referring to the Figures, wherein like numerals indicate corresponding parts throughout the several views, a windscreen wiper device, or a wiper blade assembly 20, is generally shown in FIG. 1. The wiper blade assembly 20 includes a longitudinally extending wiper strip 22 of a flexible material, such as rubber, for sealing against a vehicle's windshield (not shown) and for driving rain, snow, ice or other elements away therefrom. The exemplary wiper strip 22 includes a pair of oppositely facing grooves that extend the entire length of the wiper strip 22 and laterally beyond opposite ends of the wiper strip 22. Carrier elements 24 (also known as flexors) are disposed in the grooves and in engagement with the wiper strip 22 to bias the wiper strip 22 into a predetermined configuration. Specifically, the carrier elements 24 are self-biased into a pre-curved shape to bias the wiper strip 22 into a pre-curved configuration which allows the entire length of the wiper strip 22 to be sealed against a curved windshield. A pair of spoiler elements 28 are in engagement with the carrier elements 24 and extend lengthwise to create a down force when the vehicle is travelling at speed to improve the seal between the wiper strip 22 and the windshield. End caps 30 are secured to opposite ends of the carrier elements 24 to interconnect the carrier elements 24. A base 32 is secured to approximate midpoints of the carrier elements 24 between the spoiler elements 28, and the base 32 includes an opening which provides access to the carrier elements 24.

(17) The exemplary wiper blade assembly 20 includes two connection devices 34, 35 that are configured for attachment with different types or styles of oscillating wiper arms. Specifically, a first connection devices 34 is configured for attachment to hook and pin-style wiper arms (not shown) and a second connection device 35 is configured for attachment to bayonet or top lock-style wiper arms (not shown). The connection devices 34 are also configured to be quickly and easily secured to or removed from the carrier elements 24 with no special tools or expensive equipment. For example, FIG. 2 shows the first connection device 34 secured to the carrier elements 24, and FIG. 3 shows the second connection device 35 secured to the carrier elements 24. It should be appreciated that the wiper blade assembly 20 could include any desirable number of connection devices 34, 35 for mating with any desirably type of wiper arm. A person may quickly secure whichever connection device 34, 35 is configured for attachment to his or her vehicle's oscillating wiper arm onto the carrier elements 24. If the person has mistakenly secured the incorrect connector device to the carrier elements 24, then he or she may easily remove it and secure the correct connection device 34 in its place.

(18) Referring now to FIG. 4, the carrier elements 24 have outwardly facing notches 36, and the base 32 is positioned on the carrier elements 24 with the notches 36 being visible through the opening, which is generally rectangularly shaped but could have any desirable enclosed or non-enclosed shape. As shown in FIG. 5, the base 32 includes four generally L-shaped legs 38 disposed at its four corners for engaging the carrier elements 24. The base 32 is slid from one end of the carrier elements 24 into the position shown in FIG. 4. Once in position, the base 32 is non-removably secured to the carrier elements 24, for example, through heat staking. However, it should be appreciated that the base 32 could alternately be non-removably secured to the carrier elements 24 through crimping, welding, adhesives, fasteners, etc. The sides of the base 32 present a pair of indentations 39, and small gaps are present between the carrier elements 24 and the base 32 at the indentations 39.

(19) Referring back to FIG. 2, the first exemplary connection device 34 includes a connector body 40 and an adapter 42. The connector body 40 is generally shown in FIG. 6 and includes a pair of front side walls 44, a pair of front holding elements 46, a pair of back side walls 48 and a pair of back holding elements 50 all integrally connected with one another through a bottom portion. The back side walls 48 are spaced from the front side walls 44 by a slot. This allows the back side walls 48 to be pinched together without influencing the front side walls 44. Pinching the back side walls 48 together also causes the back holding elements 50 to deflect outwardly. Referring now to FIG. 7, a cylindrical portion 54 extends between the front side walls 44. Referring now to FIG. 8, the front holding elements 46 are shaped and sized to be inserted through one of the notches 36 in the carrier elements 24.

(20) The process of attaching the connector body 40 to the carrier elements 24 is very simple and may be undertaken without any special tools or other equipment. First, a person inserts the front holding elements 46 into the notches 36 of the carrier elements 24. Then, the person slides the connector body 40 in a forward direction until the front holding elements 46 abut the legs 38 of the base 32, i.e. the base 32 provides a physical indication that the connector body 40 is in the proper position. Next, the person pinches the back side walls 48 together to deflect the back holding elements 50 outwardly and pivots the connector body 40 downwardly until the back holding elements 50 slide through the gap between the indentations 39 of the base 32 and the carrier elements 24. The person then releases the back side walls 48, which causes the back holding elements 50 to snap inwardly and directly engage the bottom of the carrier elements 24, as best shown in FIG. 8. Because the connector body 40 is secured directly to the carrier elements 24 it may be formed to have a lower profile than other known removable connector bodies 40. This reduces the visibility of the connector body 40 from the interior of the vehicle, thereby improving a driver's visibility of the road.

(21) Once the connector body 40 is properly secured to the carrier elements 24, the user may attach the adapter 42 to the connector body 40. As shown in FIG. 9, the exemplary adapter 42 includes a pair of vertically extending adapter walls 56 and a semi-circular opening 58. To secure the adapter 42 with the connector body 40, the user simply snaps semi-circular opening 58 onto the cylindrical portion 54. This connection allows the adapter 42 to pivot about the cylindrical portion 54 of the connector body 40, thereby allowing the wiper blade assembly 20 to pivot relative to the hook-style wiper arm.

(22) Referring back to FIG. 2, the distance between the adapter walls 56 is slightly less than the distance between the interior surfaces of the front and back side walls 44, 48 of the connector body 40, and the adapter 42 extends lengthwise in between the back side walls 48 of the connector body 40 when properly attached to the connector body 40. As such, when the adapter 42 is installed in the connector body 40, it functions as a stopper to restrict movement of the back side walls 48 of the connector body 40, thereby preventing the back holding elements 50 from flexing outwardly. This configuration is a safety feature which prevents accidental removal of the connector body 40 from the carrier elements 24.

(23) To remove the connector body 40 from the carrier elements 24, the user simply removes the adapter 42 from the connector body 40, pinches the back side walls 48 together, pivots the connector upwardly until the back holding elements 50 clear the carrier elements 24 and slides the connector body 40 backwardly until the front holding elements 46 disengage from the carrier elements 24 through the notches 36. Similar to the installation process described above, removal of the connector body 40 from the carrier elements 24 requires no special tools or other equipment.

(24) The connector body 41 of the second connection device 35 is shown in FIG. 10. Similar to the first exemplary connector body 40 described above, the second exemplary connector body 41 includes front holding elements 47, back holding elements 51, front side walls 45 and back side walls 49. Attachment of the connector body 41 to the notched carrier elements 24 follows the same process as described above in conjunction with the first exemplary connector body 40. As shown in FIG. 3, the adapter 43 of the second connection device 35 is disposed outwardly rather than inwardly of the back side walls 49 of the connector body 41. Accordingly, as shown in FIG. 12, the second connection device 35 includes an additional stopper piece 64 to prevent the back holding elements 50 from accidentally disengaging from the carrier elements 24. The stopper piece 64 includes two cylindrical rods 65 which extend outwardly for snapping into engagement with corresponding grooves in the back side walls 49 of the connector body 41. If the person wants to remove the connector body 41 from the carrier elements 24, he or she must first remove the stopper piece 64 from the connector body 41.

(25) Referring now to FIG. 14, a connection device 134 of a second exemplary embodiment of the wiper blade assembly is generally shown with like numerals offset by a factor of 100 being used to indicate like features with the first exemplary embodiment. The connection device 134 of the second exemplary embodiment is distinguished from the first exemplary embodiment because the connector body 140 is removably secured directly to both the carrier elements 124 and to the base 132.

(26) The base 132 is constructed similarly to the base 32 of the first exemplary embodiment of the wiper blade assembly 20 but also includes a slot 152 shaped to receive a tongue 166 extending from the front of the connector body 140. The connector body 140 is distinguished from the first exemplary connector body 140 of the first exemplary embodiment by the tongue 166 and also by the lack of front holding elements 146.

(27) The connector body 140 of the connection device 134 of the second embodiment of the wiper blade assembly may also be attached to the carrier elements 124 very quickly and without any tools. First the tongue 166 of the connector body 140 is slid onto the slot 152 of the base 132. Next, the back side walls 148 of the connector body 140 are pinched together to flex the back holding elements 150 outwardly, and the connector body 140 is pivoted downwardly so that the back holding elements 150 are inserted into the gaps between the indentations 139 of the base 132 and the carrier elements 124. Then, when the back side walls 148 is released, the back holding elements 150 will snap inwardly and engage the bottom of the carrier elements 124.

(28) To remove the connector body 140 from the carrier elements 124, the person simply pinches the back side walls 148 of the connector body 140 to deflect the back holding elements 150 outwardly and out of engagement with the carrier elements 124. Then, the user pivots the connector body 140 upwardly until the back holding elements 150 clear the carrier elements 124. Finally, the user slides the connector body 140 backwardly to disengage the tongue 166 from the slot 152. Like the installation process, removal of the connector body 140 from the carrier elements 124 requires no special tools or other equipment.

(29) Another aspect of the present invention is related to a method of making a windscreen wiper device. The method includes the step of preparing a wiper strip 22 and at least one carrier element 24 in engagement with the wiper strip 22 to bias the wiper strip 22 into a predetermined configuration. Preferably, two carrier elements 24 are in engagement with the wiper strip 22. The method continues with engaging a base 32 having an opening with the carrier elements 24. The method then proceeds with the step of engaging a connection device 34 directly with the carrier elements 24 through the opening in the base 32.

(30) In one exemplary embodiment of the method, the connection device 34 includes a connector body 40 with a pair of front holding elements 46 and a pair of back side walls 48 and the carrier elements 24 each have a notch 36. In this embodiment, the step of engaging the connection device 34 directly with the carrier elements 24 includes the steps of inserting a pair of front holding elements 46 through the notches 36 of the carrier elements 24 and sliding the connector body 40 in a longitudinal direction to engage the front holding elements 46 with the carrier elements 24. The engaging step also includes the step of pinching the back side walls 48 inwardly to deflect the back holding elements 50 outwardly, rocking the connector body 40 downwardly and deflecting the back holding elements 50 inwardly to engage around opposite sides of the carrier elements 24.

(31) Another exemplary embodiment of the method further includes the step of engaging the connection device 34 with the base 32. This could be through, for example, a tongue 66 and slot 52 connection.

(32) Obviously, many modifications and variations of the present invention are possible in light of the above teachings and may be practiced otherwise than as specifically described while within the scope of the appended claims.