KR20130119553A - Wiper blade for automobile - Google Patents

Abstract

Disclosed is a wiper blade for automobiles capable of saving production costs. Disclosed wiper blade is characterized by including; a blade support member having an elastic spring extended long in a length direction; and a wiping member arranged on the lower side of the blade support member and extended in the length direction for wiping of an automobile glass by adhering to the automobile glass ; and a spoiler having a wind-facing wall extended in the upper side direction so as to face the wind blowing in a lateral direction; and a clip connecting the wiping member and the spoiler along the length direction; and a detachment-preventing member that is combined by a fastening tool respectively with both end parts on the length direction side of the blade support member and prevents detachment of at least one of the spoiler and the wiping member from the blade support member along the length direction.

Description

Car wiper blades {WIPER BLADE FOR AUTOMOBILE}

The present invention relates to a vehicle wiper blade, and relates to a vehicle wiper blade which can reduce production costs.

Automotive wiper blades are designed to wipe off debris such as rain, snow and dust on the front and rear windows of the vehicle.

Such a wiper blade for a vehicle may be preloaded with a curvature greater than the curvature of the curved surface of the vehicle glass before being pressed by a wiper arm and a conventional wiper blade which uses a plurality of yokes to fix the wiping rubber. There is a flat wiper blade to which elastic force is applied.

In the case of flat wiper blades, the flat leaf spring is preloaded by bending to have a predetermined curvature.

If some leaf springs are made to have a uniform width and thickness along the length of the wiper blade, the material cost may increase unnecessarily.

In addition, when it is made to have a uniform width and thickness along the longitudinal direction of the wiper blade may not fully correspond to the fact that the pressure is applied to the central portion of the wiper blade by the wiper arm. That is, even if the wiper blade is in close contact with the vehicle glass, a phenomenon in which the wiper blade may be spaced apart from the vehicle glass may occur.

Accordingly, it is an object of the present invention to provide a vehicle wiper blade which can reduce production costs.

Another object of the present invention is to provide a wiper blade for a vehicle which can improve the adhesion with the vehicle glass.

Still another object of the present invention is to provide a vehicle wiper blade which can improve the wiping performance.

According to the present invention, there is provided a vehicle wiper blade, comprising: a blade support member having an elastic spring extending in a longitudinal direction; A wiping member disposed below the blade support member and in close contact with the vehicle glass and extending in the longitudinal direction to wipe the vehicle glass; A spoiler disposed on an upper side of the blade support member, the spoiler having an air winder wall extending upwardly to catch a wind blowing in a transverse direction; A clip connecting the wiping member and the spoiler along the length direction; It is coupled to both ends of the longitudinal side of the blade support member by fasteners, and the separation prevention member for preventing at least one of the spoiler and the wiping member from being separated from the blade support member along the longitudinal direction It can be achieved by a vehicle wiper blade characterized in that.

According to the vehicle wiper blade according to the present invention has the following effects.

First, the material cost can be reduced by forming a plurality of notches on at least one of both side surfaces in the longitudinal direction of the blade supporting member to which the elastic force is preloaded.

Second, the contact force between the wiper blade and the vehicle glass can be varied by selectively distributing a plurality of notches on the blade support member that is preloaded to provide the elastic force to the wiper blade.

Third, the entire wiper blade is in close contact with the vehicle glass along the longitudinal direction, thereby improving the wiping performance.

1 is a schematic perspective view of a wiper blade according to the present invention;
2A and 2B are a side view and a main part plan view of the blade supporting member of the wiper blade of FIG. 1;
3 is a rear perspective view of the spoiler detachment preventing member of the wiper blade of FIG. 1;
4 is an enlarged perspective view of main parts of the clip of the wiper blade of FIG. 1;
5 is an exploded perspective view of the wiper blade of FIG.
6 is a partially assembled perspective view of the wiper blade of FIG. 1,
7A to 7C are assembled perspective views sequentially illustrating a process of coupling the spoiler detachment preventing member of FIG. 3 to the blade supporting member of FIG. 2B;
8A is a schematic cross-sectional view taken along line BB of FIG. 1,
8B is an enlarged perspective view of the main portion of the spoiler of the wiper blade of FIG. 1;
9 is a rear view of the main portion of the wiper blade of FIG.
10 is a schematic perspective view of a wiper blade according to the invention finally assembled by FIGS. 5 and 6,
11A and 11B are enlarged perspective views of the cover of the wiper blade of FIG. 1 and a main rear view illustrating the engagement with the clamp, respectively;
FIG. 11C is a schematic cross-sectional view taken along the line DD of FIG. 10.

Hereinafter, a wiper blade for a vehicle according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

Prior to describing a plurality of embodiments, like reference numerals refer to like elements, and descriptions thereof will be omitted to avoid duplicate descriptions.

Vehicle wiper blade 1 according to the present invention, as shown in Figures 1 and 2, the wiping member 500 in close contact with the vehicle glass to wipe the foreign matter attached to the vehicle glass; A blade support member 600 bent at a predetermined curvature to apply a preload to the wiping member 500; A spoiler 100 disposed above the blade supporting member 600 and allowing the wiping member 500 to be in close contact with the vehicle glass when a wind blowing in a lateral direction is applied; Clip 300 for connecting the blade support member 600 and the wiping member 500 in the longitudinal direction; Spoiler detachment preventing member 200 is installed at both ends of the longitudinal direction of the wiper blade (1) to prevent the spoiler 100 from being separated; And a cover 400 for supporting the connector 800 for connecting the wiper blade 1 to the wiper arm (not shown). For reference, FIG. 1 is an assembly view of a state before an elastic force is applied to the blade supporting member 600, and the wiper blade 1 is actually a wiper blade 1 by bending the blade supporting member 600 to have a predetermined curvature. The middle part () of the cover) becomes convex. In addition, for convenience, the connector 800 connected to the cover 400 is omitted in FIG. 1.

As shown in FIGS. 2A and 2B, the blade supporting member 600 includes a plurality of elastic springs 610 extending in the longitudinal direction and a plurality of sides formed on at least one side of both sides of the elastic springs 610 in the longitudinal direction. Notches 621, 622, 623, 624, 625, 626, 627, 628. For reference, since the blade support member 600 is symmetrical around the center line C, in FIG. 2B, only one side of the blade support member 600 is shown for convenience. Of course, in some cases, the blade support member 600 may be provided to be somewhat asymmetric about the center line C, but a plurality of notches 621-628 are formed on the left and right sides of the center line C. .

The blade support member 600 is shown to extend straight along the longitudinal direction throughout the entire specification of the present specification, but is actually bent along the longitudinal direction to have a predetermined curvature. As a result, the blade supporting member 600 provides an elastic force to the wiper blade 1. The wiper blade 1 is, before the pressing force is applied by the wiper arm, the center portion of the wiper blade (1) by the elasticity provided by the blade support member 600 is the wiper blade (1) It becomes more convex than both ends.

The elastic spring 610 may include a first elastic spring 612 in which the plurality of notches 621-628 are formed, and a second elastic spring 611 in which the notch is not formed. The first elastic spring 612 and the second elastic spring 611 are integrally connected to each other at the end. That is, the first elastic spring 612 and the second elastic spring 612 may be provided in one piece.

Here, the depth d of the plurality of notches 621-628 from the longitudinal side edges 612a to the inside may be determined within a range of t to 3t relative to the thickness t of the blade supporting member 600. .

In other words, a relationship in which t ≦ d ≦ 3t can be established.

On the other hand, the blade support member 600 may be made of copper, iron, aluminum and other metals or alloys thereof. The blade support member 600 may be formed by bending the shape to have a predetermined curvature after processing the outer shape into a shape as shown in FIGS. 2A and 2B. As a result, the blade supporting member 600 may provide a predetermined elastic force to the wiper blade 1.

The plurality of notches 621-628 may be provided symmetrically about a center line C of the blade supporting member 600. In some cases, the plurality of notches 621-628 may be provided asymmetrically.

The depths d of the plurality of notches 621-628 may vary along a length direction toward the one end portion of the center line C. It may be provided such that the depth (d) gradually increases along one side end direction in the center line (C). In some cases, the depths of the notches 626, 627, and 628 located near the center line C of the plurality of notches 621-628 are smaller than the depths of the notches 621 and 622 located near one end. May be Of course, the opposite can also be true.

On the other hand, the curved surface of the vehicle glass is different depending on the type of vehicle being manufactured. Thus, by adjusting the depth (d) of the plurality of notches (621-628) or the width of each notch (621-628) or the number of the plurality of notches (621-628) the optimum curved profile suitable for each vehicle glass It can be designed to have.

The blade support member 600 may be formed with a long hole 640 through which the upper locking portion 314 of the clip 300 can pass.

In addition, the blade support member 600 may further include a fastening hole 630 formed for the fastener to be coupled to the end caps (210, 220) and the fastener of the spoiler separation prevention member 200. .

Meanwhile, the spoiler detachment preventing member 200 includes a pair of end caps 210 and 220 disposed at one end and the other end of the wiper blade 1, respectively.

The pair of end caps 210 and 220 are symmetrical with respect to the cover 400. Thus, only the end cap 220 disposed at the other end will be described in detail, and the description thereof will be omitted for the end cap 210 disposed at the one end.

As shown in FIGS. 3 and 9, the end cap 220 disposed at the other end has a spoiler insertion groove 221 corresponding to an outer shape of the spoiler 100 so that one side end of the spoiler 100 is inserted. )and; A coupling part 222 coupled to the fastener through the fastening hole 630 of the blade support member 600; An end insertion part 223 into which an end of the blade supporting member 600 is inserted; The wiping member 500 may include a wiping member detachment prevention part 224 for preventing the wiping member 500 from being separated from the wiper blade 1.

In some cases, the insertion groove 221 may be provided in a shape that does not correspond to the outer surface of the spoiler 100.

A female thread corresponding to the fastener may be formed in the coupling part 222.

The wiping member detachment preventing part 224 may be formed to protrude toward the wiping member 500 from the rear surface 225 of the end cap 220. In more detail, as the wiping member detachment prevention part 224 is formed to protrude from the rear surface 225, the longitudinal side end portion 540 of the wiping member 500 is shown in FIG. 9. It is caught by the wiping member detachment prevention portion 224. Thus, the wiping member 500 is not separated from the clip 300 in the longitudinal direction.

7A to 7C, the process of coupling the end cap 220 to the blade support member 600 will be described. First, as shown in FIG. 7A, the blade support member 600 is connected to the end. The cap 220 is inserted toward the end insertion portion 223. Next, the coupling part 222 of the end cap 220 and the fastening hole 630 of the blade support member 600 are aligned with each other. Next, as shown in FIG. 7C, the fastener S1 is inserted into the fastening holes 630 aligned with each other to fix the end cap 220 and the blade support member 600.

On the other hand, the clip 300, as shown in Figure 4 and 8a, the upper engaging portion 314 is coupled to the spoiler 100; A neck portion 313 extending from the upper locking portion 314 in the direction of the wiping member 500 to pass through the long hole 640 of the blade supporting member 600; And a pair of wiping member engaging parts 311 and 312 extending from the neck part 313 to surround the expansion part 530 of the wiping member 500.

The width W1 of the upper locking portion 314 is smaller than the width W2 of the long hole 640 of the blade support member 600. As a result, the upper locking portion 314 of the clip 300 may also pass through the long hole 640 of the blade supporting member 600.

The width W3 of the wiping member engaging portions 311 and 312 is larger than the width W2 of the long hole 640 of the blade supporting member 600. As a result, the clip 300 may be prevented from escaping upward from the blade support member 600 through the long hole 640.

Here, the upper locking portion 314 may be provided to be cut at a predetermined interval along the longitudinal direction. In more detail, in order to reduce the bending moment resistance of the clip 300, the upper locking portion 314 may be cut along the longitudinal direction.

The distance between the inner ends of the pair of wiping member engaging portions 311 and 312 is greater than the width of the neck portion 520 of the wiping member 500. Thus, the expansion part 530 of the wiping member 500 may be inserted into the wiping member engaging parts 311 and 312. As a result, the wiping member 500 and the clip 300 may be coupled to each other by sliding.

The wiping member 500 may include a contact portion 510 contacting the vehicle glass surface as shown in FIGS. 1, 5, and 8A; A neck portion 520 extending from the contact portion 510; An extension part 530 extending upward from the neck part 520 and extending laterally than the neck part 520. The expansion part 530 is provided to be inserted into the clip 300.

Meanwhile, as shown in FIGS. 1, 5, 8a, and 8b, the spoiler 100 has a pair of spoilers 110 and 120 disposed on one side and the other side of the cover 400, respectively. Include.

The spoiler 100 may be made of polycarbonate. Of course, this is only an example and the spoiler 100 may be made of any of a natural polymer compound and an artificial polymer compound.

The pair of spoilers 110 and 120 are symmetrically around the cover 400 and precisely about the center line (C of FIG. 2B) of the blade supporting member 600, so that the spoiler 110 is disposed at one side. ) Only the configuration will be described in detail.

The spoiler 110 is a spring engaging portion 612 is engaged to the outer edge of the first elastic spring 612 is formed notch of the blade support member 600; Clip coupling portions 113 and 117 engaged with the upper locking portion 314 of the clip 300; The clip coupling parts 113 and 117 may include departure preventing parts 115 and 119 to prevent the clip coupling parts 113 and 117 from falling downward through the long holes 640 of the blade supporting member 610.

The departure prevention parts 115 and 119 may include a left departure prevention part 119 and a right departure prevention part 115.

The left departure prevention part 119 is in contact with the second elastic spring 611 based on the long hole 640 and the right departure prevention part 115 is based on the long hole 640 in the first elastic spring. 612 is contacted. The width W4 of the left and right departure prevention portions 119 and 115 is larger than the width W2 of the long hole 640.

The clip coupling part 117 and the right detachment preventing part 115 may be provided together in a downward extension part 118 extending downward from the inner wall surface of the spoiler 110. In more detail, the clip coupling portion 117 and the right detachment prevention portion 115 may extend in the horizontal direction in the horizontal direction from the lower extension portion 118, respectively.

The spoiler 110 may further include a wind blower wall 112 extending upward to catch the wind blowing in the transverse direction.

The height of the wind wall H2 from the lower surface of the blade support member 610 to the end of the wind wall 112 is the upper surface 119a of the release preventing part 119 from the lower surface of the blade support member 610. It is larger than the departure prevention part height H1.

More specifically, the wind wall height (H2) may be provided to be larger in the range of 2 to 5 times than the separation prevention height (H1). That is, the spoiler 110 may be formed to satisfy the relationship of 2H1 ≦ H2 ≦ 5H1.

As shown in FIG. 8B, the spoiler 110 may further include an insertion protrusion 119b inserted into the spoiler receiving portion 710 of the clamp 700. Of course, in contrast to that shown in Figure 8b, the receiving portion is provided in the spoiler 110 and the insertion protrusion (not shown) inserted into the receiving portion of the spoiler 110 may be provided in the clamp 700.

On the other hand, the spoiler 120 disposed on the other side may be provided with an insertion protrusion 129 to be inserted into the receiving portion 710 of the clamp 700.

The clamp 700 is coupled to the blade support member 600, as shown in FIGS. 5 and 8b.

In more detail, the clamp 700 includes a receiving part 710 for receiving the insertion protrusions 119b and 129 of the spoiler 110 and 120; It includes a bent portion 720 bent to be coupled to the blade support member 600. Of course, instead of the bent portion 720, the clamp 700 may be coupled to the blade support member 600 by fastening or welding or bonding by adhesive. In some cases, the clamp 700 may be coupled to each other by pressing the blade support member 600 and pressing.

In some cases, the clamp 700 may be omitted from the receiving portion 710.

The cover 400 may be coupled to the clamp 700, as shown in FIGS. 11A, 11B, and 11C.

The cover 400 has a spoiler insertion portion 410 provided in a shape corresponding to the outer surface of the spoiler 100 so that one side end of the spoiler 100 can be inserted; A connector inserting portion 430 opened to be inserted into the connector 800; It includes a boss 420 protruding to both sides from the inner surface of the connector inserting portion 430.

As shown in FIG. 5, the connector 800 has a circular boss accommodating part 810 which is cut to be press-fitted with the boss 420.

As shown in FIG. 11B, the cover 400 further includes an elastically deformable locking part 450 that is elastically deformed when press-fitted with one end of the clamp 700 and engages with the clamp 700. The clamp 700 includes a locking jaw 740 for contacting the elastic deformation catching part 450 to deform the elastic deformation catching part 450.

 Referring to FIGS. 5, 6, and 10, the coupling process of the components constituting the wiper blade 1 according to the present invention described above is as follows.

First, the clamp 700 is coupled to the blade support member 600 bent to have a predetermined curvature along the longitudinal direction. The bending portion 720 of the clamp 700 may be bent and pressed so as to surround both sides of the blade supporting member 600 to couple the clamp 700 to the blade supporting member 600. Of course, this is only an example and the clamp 700 may be coupled to the blade support member 600 in a variety of ways, such as welding, ultrasonic welding, bonding by adhesive.

Next, the wiping member 500 may be inserted into the wiping member 500 so that the expansion part 530 of the wiping member 500 is inserted into the wiping member engaging portions 311 and 312 of the clip 300. Insert it into the wire.

Next, the upper locking portion 314 of the clip 300 is inserted through the long hole 640 of the blade supporting member 600 while the wiping member 500 is coupled. As a result, the upper locking portion 314 of the clip 300 is exposed to the outside of the upper surface of the blade support member 600. As a result, as shown in FIG. 6, the clamp 700, the blade support member 600, the wiping member 500, and the clip 300 are assembled.

Next, the spoilers 110 and 120 are inserted into the clip 300 such that the exposed upper catching portions 314 are inserted into the clip coupling parts 113 and 117 of the spoilers 110 and 120. To combine.

Subsequently, the spoilers 110 and 120 are inserted into the spoiler insertion groove 221 of FIG. 3 and the blade supporting member 600 into the end insertion portion 223 of the spoiler escape preventing member 200. Insert the spoiler separation prevention member 200 to both ends so that the end of the spoiler is inserted.

Then, each of the spoiler departure preventing member 200 is coupled to the blade supporting member 600 through the fastening hole 630 of the blade supporting member 600 by using fasteners S1 and S2. do.

Then, the clamp 400 is engaged with the clamp 700 while allowing a portion of the spoiler 100 to be inserted into the spoiler insert 410 of the cover 400. The cover 400 may be detachably coupled to the clamp 700 by the elastic deformation engaging portion 450 of the cover 400.

Finally, the connector 800 is coupled to the cover 400 by pressing the connector 800 into the maintenance 420 of the cover 400. Thus, the connector 800 is coupled in a state that can be separated from the cover 400. In addition, the connector 800 is coupled to the cover 400 in a state rotatable about the boss 420.

Thereby, the wiper blade 1 shown in FIG. 10 can be assembled. Of course, the wiper blade 1 may not have a straight shape extending in the longitudinal direction, but the blade portion 800 may be relatively convex by the blade support member 600 bent to have elasticity as described above. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the scope of the present invention should be determined by the appended claims and their equivalents.

1: Car wiper blade 100, 110, 120: Spoiler
200: spoiler separation prevention member 210, 220: end cap
300: clip 400: cover
500: wiping member 600: blade support member
700: clamp 800: connector

Claims (1)

In the vehicle wiper blade,
A blade support member having an elastic spring extending in the longitudinal direction;
A wiping member disposed below the blade support member and in close contact with the vehicle glass and extending in the longitudinal direction to wipe the vehicle glass;
A spoiler disposed on an upper side of the blade support member, the spoiler having an air winder wall extending upwardly to catch a wind blowing in a transverse direction;
A clip connecting the wiping member and the spoiler along the longitudinal direction;
It is coupled to both ends of the longitudinal side of the blade support member by fasteners, and the separation prevention member for preventing at least one of the spoiler and the wiping member is separated from the blade support member along the longitudinal direction Vehicle wiper blades, characterized in that.

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