KR101027384B1 - Device for connecting a flat wiper blade to wiper arms - Google Patents

Abstract

The present invention relates to a device for removably connecting a flat wiper blade to various wiper arms. The connecting device of the present invention has a joint fixed to the frame of the flat wiper blade, a bracket mounted on the joint by snap coupling, and an adapter mounted on the bracket. The bracket extends in a direction orthogonal to the longitudinal direction of the frame and has a pivot axis in which a pivot bore is drilled. The adapter has a pair of side wall portions each having a fitting hole, and is mounted to the bracket in such a manner that both ends of the pivot axis of the bracket are snapped into the fitting holes. The adapter is formed to fit all of the various shaped end portions of the wiper arm. Through adapters and pivot axes, the linkage detachably connects one flat wiper blade to various wiper arms.

Wiper, Wiper Arms, Flat Wiper Blades, Wiper Strips, Frames, Adapters

Description

Flat wiper blades and wiper arms {DEVICE FOR CONNECTING A FLAT WIPER BLADE TO WIPER ARMS}

The present invention relates to an apparatus mounted on a wiper blade to detachably connect the wiper blade to the wiper arm. In particular, the present invention relates to a device for removably connecting a flat wiper blade to various types of wiper arms.

BACKGROUND A motor vehicle is usually provided with a wiper device for wiping the surface of a windshield. The wiper device includes, for example, a drive motor, a wiper arm, and a wiper blade positioned on the surface of the windshield.

The drive motor functions to generate reciprocating rotation. The wiper arm is coupled to the pivot of the drive motor at its proximal end. The wiper blade is detachably coupled to the distal end of the wiper arm. At the proximal end of the wiper arm, an element is provided which presses the distal end of the wiper arm toward the windshield. Therefore, the wiper blade adheres to the surface of the windshield under the pressing force of the wiper arm, and wipes the surface of the windshield while sliding the surface of the windshield by the reciprocating rotation of the drive motor.

The wiper blade has an elongated wiper strip in contact with the surface of the windshield and a frame member for fixing and supporting the wiper strip along its longitudinal direction. The frame member may be composed of an assembly having a plurality of levers.

Recently, as a frame member of a wiper blade, a wiper blade using one frame having a thin and long bar shape has been used. Such wiper blades are known in the art as flat wiper blades or flat bar wiper blades. The flat wiper blade can lower the overall height of the wiper device and allow the wiper strip to contact the surface of the windshield with a uniform load.

The flat wiper blade couples the flat wiper blade to the wiper arm in such a way that a connecting device is installed at the center of the frame and the end of the wiper arm is directly coupled with the connecting device. Each wiper arm maker sells its own wiper arm for flat wiper blades. Correspondingly, wiper arm makers or wiper device makers commercially provide connection devices suitable for various wiper arms. Accordingly, a variety of wiper arms for flat wiper blades and connecting devices adapted for each of them are known in the art.

1 to 6 show examples of wiper arms for flat wiper blades.

The wiper arm shown in Figs. 1 and 2 has a recess formed at the distal end of the accommodating portion and the accommodating portion and a tongue protruding at the tip of the accommodating portion, and is referred to as a "top lock wiper arm" or "pinch". Pin tab wiper arms. 10-2005-0085129 and 10-2005-0007446 describe the combination of a toplock wiper arm with a flat and wiper blade. According to this document, the connecting device is connected to the wiper arms 1, 1 'in such a way that the tongue 13, 13' is fastened to one side and snapped to the recesses 14a, 14b, 14a ', 14b' on the other side. do.

The wiper arm shown in FIG. 3 has a distal end in the shape of a hook and is known as a "hook wiper arm." Hook wiper arms are also used in wiper blades having a frame member composed of a lever assembly. Korean Patent Laid-Open No. 10-2005-0033046 describes a combination of a hookwise arm and a flat wiper blade. According to this document, the connecting device is connected to the wiper arm 2 in a hooked manner.

The wiper arm shown in FIG. 4 is configured such that its distal end forms an insertion space, and is known as a "bayonet wiper arm." Patent 10-725988 describes a combination of a bayonet wiper arm and a flat wiper blade. According to the above document, the connecting device is fitted into the insertion space of the distal end of the bayonet wiper arm 3 and connected to each other.

The wiper arm shown in FIG. 5 has a side pin and a clip arm projecting perpendicularly to the longitudinal direction of the wiper arm at the distal end of the wiper arm, and are referred to as "side pin wiper arm", "side". Side lock wiper arms, " slide pin wiper arms ". Korean Patent Publication No. 10-2008-0059225 describes the combination of sidelock wiper arms and flat wiper blades. According to this document, the connecting device and the wiper arm are connected to each other by penetrating the side pin 41 through the tubular element and snapping the clip arm 42 to the connecting device.

The wiper arm shown in FIG. 6 has a pin 51 extending vertically at the distal end of the wiper arm and an annular groove 52 formed on the outer circumferential surface of the pin and is known as a "pin wiper arm". The pin wiper arm is also used in a wiper blade having a frame member composed of a lever assembly. The pin wiper arm is connected to the connecting device by engaging the pin and the annular groove.

The wiper arms 1, 1 ′, 2, 3, 4, 5 illustrated in FIGS. 1 to 6 can be coupled to the flat wiper blade only by using a connecting device adapted to the shape of the distal end of each wiper arm. have. That is, the connection device installed in the flat wiper blade should be prepared in various ways according to the shape of the distal end of the wiper arm. Consequently, there is a need for dedicated connection devices that are specific to a given type of wiper arm.

Therefore, as a manufacturer of connecting devices, various connecting devices suitable for each wiper arm must be designed and developed, which increases the number of parts constituting the connecting device, thus making it difficult to develop and manage them, resulting in excessive manufacturing and logistics costs. There is a problem. In addition, from the user's point of view, the connection device to be applied only to the shape of the distal end of the wiper arm installed in the vehicle, so that the selection of the connection device has a problem in that it is difficult to feel. Therefore, there is a need to provide a flat wiper blade and a wiper arm connecting device configured to be commonly applied to various types of wiper arms.

Further, in the case of the prior art connecting device described in the Patent Publication Nos. 10-2005-0085129 and 10-2005-0007446, the recesses 14a, 14b, 14a ', 14b of the wiper arms 1, 1'. ') Is snapped into a long, elastically deformable bar shaped part, which may loosen its bite with its spherical recess. That is, when the wiper arms 1, 1 'are driven and the flat wiper blade reciprocates, the flat wiper blades are exerted in the transverse direction in the longitudinal direction by the wiper arms 1, 1' but have a bar shape. The parts of the flat wiper blades are elastically deformed and there is a problem that play may occur without accurate bite. In such a state, if the wiper arms 1, 1 'are used for a long time, the clearance increases and the likelihood of the flat wiper blade falling off the wiper arms 1, 1' increases. In addition, since the bar-shaped parts protrude to the rear of the connecting device, there is a high possibility that the bar-shaped parts are bent and broken during transportation and assembly.

In addition, in the prior art connecting device described in Korean Patent Publication No. 10-2008-0059225, the side pin 51 does not pivot smoothly with respect to the connecting device, so that the flat wiper blade is placed on the surface of the windshield of the vehicle. When moved in contact, it is difficult to pivot smoothly while complying with the curvature of the surface of the windshield.

As described above, in the connection device of the related art, there is a problem in that the flat wiper blade and the wiper arm are not firmly coupled or the pivot movement of the flat wiper blade is not smooth. Therefore, there is a need to provide a connecting device that facilitates pivoting of the flat wiper blade while firmly coupling the flat wiper blade and the wiper arm.

The present invention has been made to solve the above problems, an object of the present invention is to provide a connection device detachably connected to the wiper arm of the flat wiper blade is installed on the blade of the flat wiper.

Another object of the present invention is to provide a connection device between the flat wiper blade and the wiper arm firmly coupled to the flat wiper blade and the wiper arm while achieving the above object.

In order to achieve the above and other objects, the present invention, the first coupling element 10 having a tongue (13, 13 ') and a pair of recesses (14a, 14b, 14a', 14b '). 10 '), second coupling element 20 having hook portion 21, third coupling element 30 having top plate 31 and a pair of side plates 32a and 32b, side pin 41 Wiper with a fourth coupling element 40 having a clip arm 42 and one of the fifth coupling element 50 having a pin 51 and an annular groove 52 formed in the pin 51. An apparatus 100 is provided for detachably connecting the flat wiper blade 9 to the arms 1, 1 ′, 2, 3, 4, 5.

The connection device includes a joint 110, a bracket 120, and an adapter 130. The joint 110 is coupled to the frame 9b of the flat wiper blade. The bracket 120 includes a pair of spaced apart vertical wall portions 122a and 122b and a pivot shaft 123 disposed on an upper portion of the vertical wall portion and having a pivot bore 123a formed thereon, and mounted on the joint. The adapter 130 connects the pair of side wall portions 131 and 132 having the fitting holes 134a and 134b and the side wall portions to each other, and is located at the front of the fitting hole and the rear of the fitting hole. And a second connecting portion 133b positioned at the both ends, and both ends of the pivot shaft of the bracket are fitted into the fitting holes, respectively, and are rotatably coupled to the bracket.

The adapter 130 includes a first locking device (135a, 135b, 135c) for positioning the concave portion of the first coupling element on the side wall portion and locking the tongue of the first coupling element on the side wall portion, and the hook portion of the second coupling element. Second locking devices 131a, 132a, 136a, and 136b which lock with respect to the first connecting portion between the side wall portions, and slide rails 137a formed on the outer surface of each side wall portion and fitted between the side plates of the third coupling element. 137b) and a latching lever 137e formed at the rear end of one of the sidewall portions and elastically engaging the rear end of one of the side plates of the third coupling element, and a pin of the fifth coupling element laterally on the sidewall portion. And fifth locking devices 138a, 138b, and 138c which are fixed to the side wall portion and lock the annular groove of the fifth coupling element to the side wall portion. The side pin of the fourth coupling element is rotatable by being inserted into the pivot bore.

The first locking device may include first locking protrusions 135a and 135b provided on inner surfaces of the side wall portions facing each other, and a pivot protrusion 135c formed at one rear end of the side wall portions. A pivot protrusion is fitted into the recesses 14b and 14b 'of the first coupling element and the adapter is rotated to the first coupling element so that the tongue is locked to the first locking protrusion.

The second locking device may include second locking protrusions 136a and 136b which are respectively formed adjacent to the first connection part on an inner surface facing the side wall part. Each of the side wall portions may be formed by cutting a portion of an upper end thereof, and may include clamping bars 131a and 132a that are elastically deformable to the inside and the outside of the side wall portion, and the second locking protrusion may be located on the facing surface of the clamping bar, respectively.

The connecting device is rotatably coupled to the front end of the side wall, and includes a cover 140 formed to cover a part of the first coupling element and a part of the second coupling element, and a cover locking for locking the cover 140 to the adapter. The apparatus may further comprise devices 131e, 132e, 142a, 142b. The cover may include support plates 144a and 144b disposed on an inner surface of the cover and formed to be adjacent to an outer surface of a portion of the sidewall portion where the first locking protrusion is positioned and an outer surface of the clamping bar when the cover is locked to the adapter.

The fifth locking device is formed between the bearing holes 138a and 138b which are formed adjacent to the fitting holes in each of the side wall portions and through which the pins of the fifth coupling element can pass, and elastically in the annular groove of the fifth coupling element. The latching elements 138c and 138d may be included. The latching element may include a latching bar 138d extending from the second connection portion and a latching portion 138c disposed on the latching bar 138d and elastically bitable to the annular groove.

The joint has elements 111a, 111b, 113 for fitting to the frame, and the joint and the frame can be fixed by fitting along the longitudinal direction of the frame.

The adapter may further include a fourth connection portion 133c positioned at the rear end of the side wall portion and inserted into the vertical wall portion of the bracket.

The bracket may include a ridge portion 121d protruding protruded between the side wall portions at the front end portion.

According to the connecting device of the flat wiper blade and the wiper arm of the present invention, there is provided a connecting device that can be commonly applied to various types of wiper arms using one adapter.

Since the adapters are mutually coupled in such a way that they are locked by a first locking projection to the first coupling element at its front end and supported by a pivoting protrusion at the rear end, a simple and secure engagement between the adapter and the wiper arm with the first coupling element Is obtained. In addition, since the adapter is connected so as not to apply force in the driving direction of the wiper arm, there is no possibility that the flat wiper blade and the wiper arm are separated during the driving of the wiper arm.

In addition, since the deformation of the second locking device is prevented by the cover after the adapter is fixed to the second coupling element by the second locking device, a firm coupling between the wiper arm having the second coupling element and the adapter is maintained.

In addition, since the adapter is mounted to the bracket in such a manner that both ends of the pivot shaft are fitted into the fitting holes, a structure that is simply and quickly coupled with a free pivot movement between the bracket and the adapter is achieved.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a connection device (hereinafter, simply referred to as a "connection device") of a flat wiper blade and a wiper arm of the present invention will be described with reference to the accompanying drawings.

In the following description, the directive "forward" is referred to in the direction toward the distal end of the wiper arm, and the directive "rear" is referred to in the opposite direction of "forward". In addition, the "upper" or "upper" directive is referred to in the direction of the wiper arm in the assembly of the flat wiper blade and the wiper arm, and the "downward" or "lower" directive is opposite to the "upward" or "upper" direction. See also.

The connecting device of the present invention is configured to be applicable to various types of wiper arms. To this end, the connecting device of the present invention has an adapter configured to be detachably connected to all of the coupling elements provided at the distal ends of the wiper arms.

1 to 6, the first to fifth coupling elements 10, 10 ′, 20, 30, 40, and 50 to which the connection device of the present invention is applied will be described.

The first coupling element 10 has a top plate 11 and a pair of side plates 12a and 12b extending vertically at both edges of the top plate 11 so that the adapter can be accommodated therein. Forming a space. The top plate 11 is in contact with the upper portion of the adapter, the side plates 12a, 12b are respectively facing the side of the adapter. In addition, the first coupling element 10 is formed with a tongue 13 extending from the front end of the upper plate 11 and a recess formed by partially cutting the rear ends of the side plates 12a and 12b, or concave inwardly. The part 14a, 14b is provided.

The first coupling element 10 'has an opening 11a' formed in the top plate 11 ', and another tongue 15' extending forward from the edge of the opening 11a '. It is configured similarly to the first coupling element 10 except that the recesses 14a 'and 14b' are formed generally at right angles. In another example of such a first coupling element 10 ', the second tongue 15' may not be provided.

The second coupling element 20 has a hook portion 21 which is curved approximately 180 degrees and an extension portion 22 extending rearwardly substantially parallel to the wiper arm 2 at the hook portion 21. The hook portion 21 has a convex outer side 21a and an inner side 21b inside thereof.

The third coupling element 30 has a top plate 31 and side plates 32a and 32b extending substantially perpendicular to the top plate 31 at both edges of the top plate 31, into which the adapter is inserted. It forms an insertion space. The upper plate 31 has an opening 31a. In addition, the third coupling element 30 further includes stoppers 33a and 33b protruding inward from the lower ends of the respective side plates 32a and 32b. The stopper portions 33a and 33b are generally located at the rear portions of the side plates 32a and 32b.

The fourth coupling element 40 has a side pin 41 extending vertically at the distal end of the wiper arm 4 and a clip arm 42 extending parallel to the side pin 41 adjacent to the side pin 41. It is provided. The clip arm 42 has a stopper portion 42a and a clip portion 42b that is bent and extended at the distal end of the stopper portion 42a.

The fifth coupling element 50 is located in the middle of the pin 51 and the pin 51 extending substantially perpendicular to the wiper arm 5 at the distal end of the wiper arm 5 and has a diameter smaller than the diameter of the pin 51. The branch includes an annular groove 52.

The connecting device of the present invention uses the components of the connecting device to provide a wiper arm (1, 1 ') having one of the first to fifth coupling elements (10, 10', 20, 30, 40, 50) of different configurations at its distal end. , 2, 3, 4, 5) are configured to detachably connect the flat wiper blades. For this connection, the connecting device of the present invention is provided only in the adapter or in combination with the adapter and other components, and each of the first to fifth locking devices for performing locking with the first to fifth coupling elements, respectively. It includes.

The first locking device is provided in the adapter to perform locking by engaging and snapping the adapter and the first coupling elements 10 and 10 '.

The second locking device is provided in the adapter to perform locking by hooking and snapping the adapter and the second coupling element 20.

The third locking device is provided in the adapter and performs locking by fitting the adapter and the third coupling element 30.

The fourth locking device is provided in the component to which the adapter and the adapter are rotatably coupled, and performs locking by insertion and rotation with the fourth coupling element 40.

The fifth locking device is provided in the adapter and performs locking by insertion and snap engagement of the adapter and the fifth coupling element 50.

Referring to FIG. 7, as an exemplary embodiment of the connecting device of the present invention, the connecting device 100 is a joint 110 coupled to the flat wiper blade 9 and a bracket mounted to the joint 110 by snap coupling. 120, an adapter 130 mounted on the bracket 120, and a cover 140 rotatably coupled to the front end of the adapter 130.

The flat wiper blade 9 has a wiper strip 9a in contact with the surface of the windshield and a frame 9b for fixing and supporting the wiper strip 9a. The wiper strip 9a is made of, for example, a rubber material and has a tip of a triangular cross section in contact with the surface of the windshield. The frame 9b is made of metal or plastic and has the shape of a thin and long bar. The wiper strip 9a is fixed to the frame 9b by fitting to a slot (not shown) formed in the frame 9b along its longitudinal direction. The frame 9b may be formed to be generally linear as shown, or may be formed to be curved at a predetermined curvature along its longitudinal direction.

8 is a perspective view showing the joint and FIG. 9 is a side view of the joint. The joint 110 is coupled to the flat wiper blade 9 to connect the wiper arms 1, 1 ′, 2, 3, 4, 5 and the flat wiper blade 9. In detail, the joint 110 is arranged in the middle of the frame 9b and can be fixed to the frame 9b with an interference fit, for example.

7 to 9, the joint 110 includes a joint body 111 having a generally U-shaped cross section, a frame holding protrusion 112 for holding the frame 9b, and a bracket 120. And a snap element 113 for snap engagement. The joint body 111 has frame holding legs 111a and 111b at both edges in the longitudinal direction. The frame holding protrusions 112 protrude from the lower ends of the frame holding legs 111a and 111b to the inside of the joint body 111. The frame 9b is held in an interference fit with the frame holding protrusion 112 and the frame holding legs 111a and 111b. That is, the joint 110 and the frame 9b may be coupled by inserting the frame 9b from one end of the frame 9b between the frame holding legs 111a and 111b at the lower surface of the joint body 111. The connection device 100 may have elements for reinforcing the interference fit of the frame 9b. To this end, in the illustrated embodiment, holes 114a are drilled inward on both sides of the joint body 111. The pressing protrusion 121e of the bracket 130, which will be described later, is inserted into the hole 114a. The inserted pressing protrusion 121e protrudes slightly inward from the frame holding legs 111a and 111b to be in contact with both edges of the frame 9b. The snap element 113 is formed on the upper surface of the joint body 111 at both edges in the longitudinal direction. The snap element 113 has the shape of a claw or hook that slightly protrudes outward from the top surface of the joint body 111. In the illustrated embodiment, two frame holding protrusions 112 and snap elements 113 are provided at one side edge of the joint body 111. In other embodiments, a different number of frame holding protrusions 112 and snap elements 113 may be provided in the joint body 111. The lower surface of the joint body 111 is formed with a recess or recess 111c upward. The groove or recess 111c functions as a space in which an upper portion of the wiper strip 9a fitted to the frame 9b can be placed.

10 is a perspective view of the bracket. The bracket 120 is disposed on the joint 110 and is mounted by snap coupling to the joint 110.

In one embodiment, the bracket 120 includes a base 121 of sufficient size to cover the joint 110, a pair of vertical wall portions 122a and 122b vertically formed on the base 121, and a vertical wall. A pivot shaft 123 located above the portions 122a and 122b and bearing notches 124a and 124b formed in each of the vertical wall portions 122a and 122b adjacent to the pivot shaft 123.

The pivot shaft 123 acts as a pivot center in the assembly of the flat wiper blade 9 and the wiper arms 1, 1 ′, 2, 3, 4, 5. The pivot shaft 123 is formed to be substantially orthogonal to the longitudinal direction of the frame 9b on top of the vertical wall portions 122a and 122b. The pivot shaft 123 is formed in a hollow and defines a pivot bore 123a penetrating the pivot shaft 123. One end 123b of the pivot shaft 123 is open and the other end 123c is closed. The pivot bore 123a is involved in connection with the wiper arm 4 with the fourth engaging element 40 at its distal end. Both ends 123b and 123c of the pivot shaft 123 slightly protrude outward of the vertical wall portions 122a and 122b. At both ends of the pivot shaft 123, inclined surfaces 123d inclined inward are formed to facilitate mounting with the adapter 130, respectively.

11 is a perspective view showing the inside of the bracket. 12 is a perspective view showing the assembly of the joint and the bracket.

10 to 12, the bracket 120 has a positioning element that defines a coupling position of the bracket 120 when the bracket 120 is coupled to the joint 110. As the positioning element, cutouts 121a are formed in the middle of both edges of the base 121 of the bracket 120. The notch 121a has a shape corresponding to the mating protrusions 115a and 115b formed at both edges of the joint body 111. In addition, a groove or a recess 121c is formed in the lower portion of the base 121 in the longitudinal direction. The recess 121c coincides with the shape of the groove of the joint body 111 or the recess 111c. The recess 121c functions as a space in which a part of the wiper strip 9a which comes out of the frame 9b is placed. In addition, pressing protrusions 121e are formed at both edges of the lower end of the base 121. When the bracket 120 is mounted on the joint 110, the pressing protrusion 121e protrudes inwardly from the frame holding legs 111a and 111b through the hole 114a of the joint body 111, and the frame 9b and the frame 9b. Reinforce the interference fit between the joints (110). Adjacent to the cutout 121a, in detail, snap through holes 125 are formed on both sides of the cutout 121a for snap-fitting with the snap element 113 of the joint 110. Accordingly, the snap element 113 of the joint 110 snaps to the snap-through hole 125 so that the bracket 120 is mounted on the joint 110. When the bracket 120 and the joint 110 are coupled, the mating protrusions 115a and 115b and the cutout 121a are disposed so that the bottom surface of the base 121 and the bottom surface of the joint body 111 are substantially in the same plane. Is located.

Bearing notches 124a and 124b are cut in a semi-circular shape from the upper edge of each vertical wall portion 122a and 122b as shown in the illustrated embodiment. The pin 51 of the fifth coupling element 50 may be supported by the bearing notch 124. As another embodiment, when the vertical wall portions 122a and 122b behind the pivot shaft 123 are formed low, the bearing notch may be omitted.

Figure 13 is a perspective view of the adapter, Figure 14 is a perspective view showing the inside of the adapter. 15 and 16 are top and side views, respectively, of the adapter.

13 to 16, as an embodiment, the adapter 130 may include a pair of side wall portions 131 and 132 and first to fourth connection portions connecting the side wall portions 131 and 132 to each other. 133a, 133b, 133c, and 133d. A portion of the bracket 120 including the pivot shaft 123 is disposed between the side wall portions 131 and 132. In addition, the ridge portion 121d protruding upward in front of the base 121 of the bracket 120 may be disposed between the front portions of the side wall portions 131 and 132, and the fourth connection portion 133d bent in a U shape. ) May be placed between the rear portions of the sidewall portions 131, 132. By the ridge portion 121d and the fourth connection portion 133d, the adapter 130 can be prevented from swinging laterally with respect to the axis of the pivot shaft 123 while the adapter 130 is mounted on the bracket 120. Can be.

In each of the side wall portions 131 and 132, fitting holes 134a and 134b into which both ends 123b and 123c of the pivot shaft 123 are fitted are drilled. The distance between the inner surfaces of the side wall portions 131 and 132 is slightly larger than the distance between the outer surfaces of the vertical wall portions 122a and 122b of the bracket 120. In addition, the distance between the inner surface of each side wall portion 131, 132 is the width of the tongue portion 13, 13 ′ of the first coupling element 10, 10 ′ and the hook portion 21 of the second coupling element 20. It is decided to accommodate enough. When the adapter 130 is mounted on the bracket 120, the pivot shaft 123 is in contact with the lower ends of the sidewall portions 131 and 132 at the inclined surfaces 123d at both ends thereof. Subsequently, when the adapter 130 is pressed against the bracket 120, the side wall portions 131 and 132 are slightly bent elastically to the outside of the adapter 130, and both ends of the pivot shaft 123 are fitted with holes 134a and 134b. 2), both ends of the pivot shaft 123 and each of the fitting holes 134a and 134b are fitted to each other by returning elastically when fully entered. When the adapter 130 is mounted to the bracket 120, the outer surfaces of the side walls 131 and 132 and the outer edges of both ends of the pivot shaft 123 lie generally in the same plane.

As such, the adapter 130 is mounted to the bracket 120 by pressing and snapping on the upper side of the bracket 120. The pivot shaft 123 is disposed orthogonally to the frame 9b and the wiper arms are coupled to the adapter 130 in a direction perpendicular to the pivot shaft 123. Therefore, when the flat wiper blade 9 and the wiper arms 1, 1 ', 2, 3, 4, 5 are connected, both are within a predetermined range clockwise or counterclockwise about the pivot axis 123. Relative rotation is possible at. Thus, when the flat wiper blade 9 is moved on the surface of the windshield by the wiper arms 1, 1 ', 2, 3, 4, 5, the flat wiper blade 9 conforms to the curvature of the windshield surface. While contacting the windshield.

The first connecting portion 133a is located in front of the fitting holes 134a and 134b. The front portion of the first connecting portion 133a is rounded to seat the inner surface 21b of the hook portion 21 of the second coupling element 20. The second connecting portion 133b is located behind the fitting holes 134a and 134b. The third connection part 133c is located at the front ends of the side wall parts 131 and 132. Rotating holes 131c and 132c for pivotal coupling of the cover 140 to be described later are formed in the side wall portions 131 and 132 in the vicinity of the third connecting portion 133c. The fourth connecting portion 133d is formed in a substantially U shape at the rear ends of the side wall portions 131 and 132. Accordingly, a space is formed between both outer surfaces of the fourth connection portion 133d and the inner surfaces of the side wall portions 131 and 132, and when the adapter 130 is mounted on the bracket 120, the vertical wall portion of the bracket 120 is provided. Portions of the rear portions 122a and 122b may be inserted into the space.

In this exemplary embodiment, the first locking device comprises a first locking projection 135a, 135b elastically snapped onto the tongues 13, 13 'of the first coupling element 10, 10', and a first coupling. Pivoting projections 135c that fit into recesses 14a, 14b, 14a ', 14b' of elements 10, 10 '.

The first locking protrusions 135a and 135b protrude in a wedge shape between the first connecting portion 133a and the third connecting portion 133c on the upper inner surfaces of the sidewall portions 131 and 132. In addition, since the portion between the first and third connection portions 133a and 133c of the side wall portions 131 and 132 is configured to be bent substantially elastically, the portion where the first locking protrusions 135a and 135b are positioned is an adapter. The elastic deformation is possible to the inside and outside of the (130). The pivot protrusion 135c is formed at the rear end of the side wall portion 132. The pivot protrusion 135c is inserted into the recessed portions 14b and 14b 'formed in the side plates 12b and 12b' of the first coupling elements 10 and 10 ', respectively, and is formed to contact the surface thereof. The pivot protrusion 135c may take a triangle with rounded corners. In the illustrated embodiment, the pivot protrusion 135c is formed only on the sidewall portion 132, but the pivot protrusion may be provided at the rear end portion of the sidewall portion 131.

In this exemplary embodiment, the second locking device includes a pair of second locking protrusions 136a and 136b formed on the inner surface of each side wall portion 131 and 132 adjacent to the first connecting portion 133a.

The second locking protrusions 136a and 136b have a wedge shape so that the hook portion 21 of the second coupling element 20 can be easily inserted and removed easily, and the inclined surface thereof faces the front of the adapter 130 and the engaging surface thereof. Is disposed to face the rear of the adapter 130. The gap between the engaging surfaces of the second locking protrusions 136a and 136b and the front surface of the first connecting portion 133a may generally correspond to the thickness of the hook portion 21. In addition, the second locking protrusions 136a and 136b are configured to elastically deform into and out of the adapter 130. To this end, as an embodiment, each side wall portion (131, 132) has a pair of clamping bars (131a, 132a) capable of elastic deformation, the second locking projections (136a, 136b) are clamping bars (131a, 132a) It is formed in the surface facing each other.

In the illustrated embodiment, the clamping bars 131a and 132a are formed by cutting a portion near the upper end of the side wall portions 131 and 132 in parallel with the upper ends of the side wall portions 131 and 132, for example. In addition, the notches 131b and 132b are formed on the upper sidewall portions 131 and 132 at the rear of the clamping bars 131a and 132a, so that the clamping bars 131a and 132a can be flexibly elastically bent more easily. . The front free ends of the clamping bars 131a and 132a are formed with stepped portions 131f and 132f that are in contact with the supporting plates 144a and 144b of the cover 140, which will be described later.

The inside of the cover 140 is shown in FIG. 17. 18 is a side view of the cover. 19 is a perspective view showing the assembly of the joint, the bracket, the adapter and the cover.

The cover 140 assists in locking the first and second locking devices and covers the end portions of the wiper arms 1, 1 ′ and 2 and the adapter 130 after being connected. Referring to FIGS. 17 and 18, as an embodiment, the cover 140 has a U-shaped cross-sectional shape, the top plate 141c overlying the side wall portions 131 and 132, and the side wall portions 131 and 132. ) And a pair of side plates 141a and 141b respectively facing each other. At one end of the cover 140, that is, at the front end of the side plates 141a and 141b, pivot pins 143a and 143b for rotatably coupling the cover 140 to the adapter 130 protrude into the cover 140. It is. The pivot pins 143a and 143b are fitted to the pivot holes 131c and 132c formed near the third connecting portion 133c of the adapter 130, respectively. In order to facilitate the fitting, the inclined surface is formed on the lower side of the rotation pins (143a, 143b). The cover 140 can be simply coupled to the adapter 130 by contacting the pivot pins 143a and 143b with the front ends of the sidewall portions 131 and 132 and pressing the cover 140 into the adapter 130. have.

The connection device 100 includes a cover locking device for locking the cover 140 to the adapter 130. The cover locking device snaps to the claw seat 142a concave at the bottom of each side plate 141b and 141c of the cover 140 and to the claw seat 142a when the cover 140 is rotated by the adapter 130. And locking claws 131e and 132e provided in the side wall portions 131 and 132, respectively.

The locking claws 131e and 132e are positioned on the sidewall portions 131 and 132 to correspond to the cloth sheets 142a. In the illustrated embodiment, the locking claws 131e and 132e extend from the stopper walls 131d and 132d formed on the outer surfaces of the side wall portions 131 and 132 to the front of the side wall portions 131 and 132. The cover 140 is fixed to the adapter 130 by snapping the locking claws 131e and 132e past the lower ends of the side plates 141b and 141c of the cover 140 to the cloth sheet 142a. For easy coupling with the locking claws 131e and 132e, the bottom surfaces of the side plates 141b and 141c are formed with inclined surfaces aligned with the claw sheets 142a. The engagement position of the claw sheet 142a and the locking claws 131e and 132e is the first coupling element 10, 10 ′ between the bottom surface of the top plate 141c of the cover 140 and the top surface of the side wall portions 131 and 132. The rear plate 11, 11 'of the or the rear portion of the hook portion 21 of the second coupling element 20 can be determined to be interposed without play.

The cover 140 may include the first locking protrusions 135a and 135b and the second locking protrusions when the first coupling element 10, 10 ′ and the second coupling element 20 are locked to the side wall portions 131 and 132. It further includes elements for preventing 136a, 136b from moving out of the sidewall portions 131, 132 to complement locking with the wiper arms 1, 1 ', 2. In one embodiment, the element is configured, for example, in cover 140 to configure the complementary function when cover 140 is coupled to adapter 130. In the illustrated embodiment, the element comprises a pair of support plates 144a, 144b formed on the inner surface of the side plates 141, 142 of the cover 140. The distance between the support plates 144a and 144b is slightly larger than the distance between the outer surface of the side wall portions 131 and 132 where the first locking protrusions 135a and 135b are located and the distance between the step portions 131f and 132f. The support plates 144a and 144b are formed on the outer surface of the sidewall portions 131 and 132 and the clamping bars 131a and 132a where the first locking protrusions 135a and 135b are positioned when the cover 140 is coupled to the adapter 130. It is formed so as to span the stepped portions 131f and 132f.

In addition, the cover 140 may be positioned at a slight clearance from the outer surface of the side plates 12a, 12b, 12a ′, 12b ′ of the first coupling element when the cover 140 is locked to the adapter 130. Support protrusions may be provided on the inner surface of each side plate (141a, 141b).

In this exemplary embodiment, the third locking device slides to the inner surface of the pair of side plates 32a and 32b provided on the third coupling element 30 and is fitted with the inner surface of the slide rails 137a and 137b. And stopper walls 131d and 132d arranged to contact the front ends of the side plates 32a and 32b, and latching levers 137e elastically latched to the rear ends of the side plates 32b.

In an embodiment, the slide rails 137a and 127b protrude along the longitudinal direction at the lower ends of the respective side wall portions 131 and 132. In addition, the third locking device further comprises a stop element for restricting the insertion of the adapter 130 into the third coupling element 30. The stop element includes stopper portions 137c and 137d formed to contact the stopper portions 33a and 33b protruding inwardly from the lower ends of the side plates 32a and 32b of the third coupling element, respectively. The stoppers 137c and 137d have a length shorter than the slide rails 137a and 137b and protrude outward from the slide rails 137a and 137b below the slide rails 137a and 137b. Thus, as shown in FIG. 16, a stepped portion is formed between the slide rail 137b and the stopper portion 137d. The latching lever 137e extends from the rear end of the side wall portion 132 and may be elastically bent to the outside of the side wall portion 132. To this end, the rear end portion of the side wall portion 132 is a part of the lower side of the rotating projection 135c is cut out to perform the elastic deformation of the latching lever 137e. The latching lever 137e is positioned so that the front end thereof is caught by the rear end of the side plate 32b when the adapter 130 is completely inserted into the third coupling element 30. When the adapter 130 and the third coupling element 30 are separated, the latching lever 137e is lowered to separate the latching lever 137e from the rear end of the side plate 32b. It may be separated from the third coupling element 30.

In this exemplary embodiment, the fourth locking device includes a pivot shaft 123 to which the side pin 41 of the fourth coupling element 40 is pivotally fitted and a clip arm of the fourth coupling element 40. 42) consists of parts that snap into place. In the embodiment shown, the portion is an outer surface of the sidewall portion 132. The distance between the outer surfaces of the side wall portions 131 and 132 is determined such that the clip pressure 42 can snap to the outer surface of the side wall portion 132.

In this exemplary embodiment, the fifth locking device is provided in the adapter 130 and bearing holes 138a and 138b for supporting the pin 51 of the fifth coupling element, and the annular groove 52 of the fifth coupling element. ) And a latch portion 138c that is elastically engaged.

In one embodiment, the bearing holes 138a and 138b are drilled adjacent to the fitting holes 134a and 134b in the side wall portions 131 and 132, and the latch portion 138c is connected to the second connection portion 133b at one end. It is provided in the latching bar 138d formed integrally. The other end of the latching bar 138d becomes a free end, and the latching bar 138d is elastically deformable around the second connection part 133b. The latch portion 138c has a contact surface rounded to correspond to the outer circumferential shape of the annular groove 52. In addition, the latch portion 138c is formed in the latching bar 138d so as to lie inward of the areas of the bearing holes 138a and 138b in the free state of the latching bar 138d. According to this structure, the pin 51 of the fifth coupling element 50 enters between the side wall portions 131 and 132 through the bearing hole 138a of the side wall portion 131 and the bearing hole (of the side wall portion 132). Through 138b). When the pin 51 passes through the bearing holes 138a and 138b, the latching bar 138d is bent, and when the annular groove 52 reaches the latching bar 138d, the latch portion 138c enters the annular groove 52. ) Is elastically bitten. When the adapter 130 is separated from the fifth coupling device, when the latching bar 138d is flipped upward to release the bite with the annular groove 52, the pin 51 may be separated from the side walls 131 and 132. Can be.

20 and 21 are perspective views illustrating the locking of the wiper arm 1 and the connecting device 100 with the first coupling element 10 at its distal end. An example connection of the wiper arm 1 and the flat wiper blade 9 will be described with reference to FIGS. 1, 20 and 21.

With the cover 140 retracted from the adapter 130, the pivot protrusion 135c of the adapter 130 contacts the recess 14b of the corresponding first coupling element 10. With the pivot protrusion 135c in contact with the recess 14b, the adapter 130 (the flat wiper blade 9 on which the adapter 130 is mounted) has the first engagement with the pivot protrusion 135c as the pivot center. It can be rotated towards the element 10. When fully rotated, the tongue 13 is locked by the first locking protrusions 135a and 135b between the first locking protrusions 135a and 135b of the front portion of the side wall portions 131 and 132, and the top plate 11 is In contact with the top of the side wall portion (131, 132). In this state, the cover 140 is turned toward the adapter 130 so that the claw sheet 142a and the locking claws 131e and 132e are engaged with each other. Then, a part of the lower surface of the upper plate 141c of the cover is in contact with a part of the upper surface of the upper plate 11 of the first coupling element 10, and the supporting plates 144a and 144b are formed by the first locking protrusions 135a and 135b. Adjacent to outer surfaces of the side wall portions 131 and 132 located, the outer deformation of the first locking projections 135a and 135b is prevented. As such, the flat wiper blade 9 is supported on the first coupling element 10 by the pivot protrusion 135c at the rear end of the adapter 130 to the wiper arm 1 having the first coupling element 10. And are locked and connected by the first locking protrusions 135a and 135b at the front end.

22 and 23 are perspective views illustrating the locking of the wiper arm 1 'and the connecting device 100 with another first coupling element 10' at its distal end.

In a state where the cover 140 is folded from the adapter 130, the pivot protrusion 135c is fitted into the recess 14b ′. Subsequently, the flat wiper blade 9 on which the connecting device 100 is mounted is rotated toward the first coupling element 10 'so that the first coupling element 10' and the adapter 130 correspond to each other. Let's do it. Thereafter, the cover 140 is folded back toward the adapter 130 to complete the locking. The wiper arm 1 ′ with the first engaging element 10 ′ is locked with the connecting device 100 in the same manner as in the case of the first engaging element 10 described above.

24 and 25 are perspective views illustrating the locking of the wiper arm 2 and the connecting device 100 with the second coupling element 20 at its distal end.

With the cover 140 retracted from the adapter 130, the extension 22 of the second coupling element is inserted into the adapter 130 through the clamping bars 131a and 132a of the adapter 130. During insertion, the clamping bars 131a and 132a are bent outwardly while the hook portion 21 and the second locking protrusions 136a and 136b contact each other, and the hook portion 21 opens the second locking protrusions 136a and 136b. After the return, the second locking protrusions 136a and 136b are caught by the outer surface 21a of the hook portion 21. At this time, the inner surface 21b of the hook portion 21 is in contact with the outer surface of the first connecting portion 133a, and the extension portion 22 is disposed below the first connecting portion 133a and the pivot shaft 123.

With the adapter 130 locked to the hook portion 21 by the second locking device (in detail, the clamping bars 131a and 132a and the second locking protrusions 136a and 136b), the cover 140 is opened. Fold toward the adapter 130 to close it. Then, while the claw seat 142a and the locking claws 131e and 132e are engaged, the support plates 144a and 144b are positioned at the stepped portions 131f and 132f of the clamping bar, and the clamping bars 131a and 132a are fixed and the adapter ( 130 and locking of the wiper arm 2 is completed.

26 and 27 are perspective views illustrating the locking of the wiper arm 3 and the connecting device 100 with the third engaging element 30 at its distal end.

As shown in FIG. 26, the adapter 130 mounted on the flat wiper blade 9 is inserted into the third coupling element 30 from its rear end. Then, the adapter 130 is inserted into the third coupling element 30 while the slide rails 137a and 137b slide contact the inner surfaces of the side plates 32a and 32b, respectively. The front ends of the side plates 32a and 32b contact the stopper walls 131d and 132d, the stopper portions 33a and 33b contact the stopper portions 137c and 137d of the slide rails 137a and 137b, and the latching levers. When 137e is caught by the rear end of the side plate 32b, the fitting locking is completed. Since the latching lever 137e is engaged to the rear end of the side plate 32b, the separation of the third coupling element 30 and the adapter 130 is prevented.

28 and 29 are perspective views illustrating the locking of the wiper arm 4 and the connecting device 100 with the fourth engaging element 40 at its distal end.

As shown in FIG. 28, the flat wiper blade 9 equipped with the adapter 130 is coupled to the wiper arm 4 in such a manner that the side pins 41 are fitted to the pivot shaft 123. This fitting is completed when the portion of the fourth coupling element 40 near the base of the side pin 41 contacts the outer surface of the side wall portion 131. The adapter 130 (or flat wiper blade 9) is rotatable around the side pin 41 while the side pin 41 is fitted to the pivot shaft 123. Therefore, the adapter 130 is then rotated toward the wiper arm 4 to bring the stopper portion 42a of the clip arm 42 into contact with the upper portions of the side wall portions 131 and 132. Then, the clip portion 42b is snap-coupled to the outer surface of the side wall portion 132. In the state shown in FIG. 29, the side pin 41 is fitted to the pivot shaft 123, and the clip portion 42a is elastically coupled to the outer surface of the side wall portion 132. ) And snap locking between the coupling device 100 and the coupling device 100 are achieved.

30 is a perspective view illustrating the locking of the wiper arm 5 and the connecting device 100 with the fifth engaging element 50 at its distal end.

The flat wiper blade 9 on which the adapter 130 is mounted is coupled to the wiper arm 5 by inserting the pin 51 into the bearing hole 138a of the side wall portions 131 and 132. While the pin 51 is inserted, the latching portion 138c latches the annular groove 52 when the latching bar 138b of the fifth locking device flexes elastically to the outside and the insertion of the pin 51 is completed. Bitten by (138d). By the engagement of the pin 51 and the bearing hole 138a and the engagement of the annular groove 52 and the latch portion 138c, insertion and snap locking of the wiper arm 5 and the adapter 130 are achieved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It will be clear to those who have knowledge of.

1 to 6 are perspective views showing a conventional wiper arm for a flat wiper blade.

7 is an exploded perspective view showing an embodiment of a connection device between the flat wiper blade and the wiper arm of the present invention.

8 is a perspective view illustrating the joint;

FIG. 9 is a side view of the joint shown in FIG. 8. FIG.

10 is a perspective view of the bracket.

FIG. 11 is a perspective view illustrating a longitudinal section of the bracket illustrated in FIG. 10.

12 is a perspective view showing the assembly of the joint and the bracket.

13 is a perspective view illustrating the adapter.

FIG. 14 is a perspective view showing a longitudinal section of the adapter shown in FIG. 13. FIG.

FIG. 15 is a plan view of the adapter shown in FIG.

16 is a side view of the adapter shown in FIG.

17 is a perspective view of the inside of the cover.

18 is a side view of the cover shown in FIG. 17.

19 is a perspective view showing the assembly of the joint, the bracket, the adapter and the cover.

20 and 21 are perspective views illustrating the connection of the flat wiper blade and the top lock wiper arm using the connecting device of the present invention.

22 and 23 are perspective views illustrating the connection of the flat wiper blade and another top lock wiper arm using the connecting device of the present invention.

24 and 25 are perspective views illustrating the connection of the flat wiper blade and the hook wiper arm using the connection device of the present invention.

26 and 27 are perspective views illustrating the connection of the flat wiper blade and the bayonet wiper arm using the connecting device of the present invention.

28 and 29 are perspective views illustrating the connection of the flat wiper blade and the sidelock wiper arm using the connecting device of the present invention.

30 is a perspective view illustrating the connection of the flat wiper blade and the pin wiper arm using the connection device of the present invention.

<Description of the symbols for the main parts of the drawings>

1.1 ': Top lock wiper arm 2: Hook wiper arm

3: bayonet wiper arm 4: sidelock wiper arm

5: pin wiper arm 9: flat wiper blade

9a: Wiper strip 9b: Frame

100: connecting device 110: joint

111: joint body 112: snap element

113: frame holding protrusion 120: bracket

122a, 122b: vertical wall portion 123: pivot axis

123a: pivot bore 130: adapter

131, 132: side wall portions 131a, 132a: clamping bar

131e and 132e: Locking claw 133a: First connection part

133b: second connecting portion 135a, 135b: first locking protrusion

135c: rotating protrusion 136a, 136b: second locking protrusion

137a, 137b: Slide rail 137e: Latching lever

138a, 138b: bearing hole 138c: latch part

138d: latching lever 140: cover

142a, 142b: Closette 144a, 144b: Support Plate

Claims (11)

First engagement element 10, 10 ′ with tongue 13, 13 ′ and a pair of recesses 14a, 14b, 14a ′, 14b ′, second engagement element with hook portion 21. 20, third coupling element 30 having top plate 31 and a pair of side plates 32a, 32b, fourth coupling element 40 having side pins 41 and clip arms 42; And a wiper arm 1, 1 ′, 2, 3, 4, 5 with one of the fifth coupling element 50 having a fin 51 and an annular groove 52 formed in the fin 51. Apparatus 100 for detachably connecting the wiper blade (9), A joint 110 coupled to the frame 9b of the flat wiper blade; A bracket 120 having a pair of spaced apart vertical wall portions 122a and 122b and a pivot shaft 123 positioned on an upper portion of the vertical wall portion and having a pivot bore 123a formed thereon, and mounted to the joint; A pair of side wall portions 131 and 132 formed with fitting holes 134a and 134b, respectively, and the first connection portion 133a positioned in front of the fitting hole and positioned behind the fitting hole, respectively. An adapter 130 having a second connecting portion 133b and having both ends of the pivot shaft of the bracket fitted into the fitting holes to be rotatably coupled to the bracket, The adapter, First locking devices (135a, 135b, 135c) for positioning the recess of the first coupling element in the side wall portion and locking the tongue of the first coupling element in the side wall portion; Second locking devices (131a, 132a, 136a, 136b) for locking the hook portion of the second coupling element with respect to the first connection portion between the sidewall portions; A slide rail 137a and 137b formed on an outer surface of each of the side wall portions and fitted between the side plates of the third coupling element and a rear end of one of the side wall portions and one of the side plates of the third coupling element. A latching lever 137e elastically engaged at the rear end, A fifth locking device (138a, 138b, 138c) which secures the pin of the fifth coupling element laterally to the sidewall portion and locks the annular groove of the fifth coupling element to the sidewall portion, The side pin of the fourth coupling element is rotatable by being inserted into the pivot bore Connection between flat wiper blade and wiper arm. The method of claim 1, The first locking device includes first locking protrusions 135a and 135b formed on inner surfaces of the side wall portions facing each other, and a pivot protrusion 135c formed at a rear end of one of the side wall portions. The pivot protrusion is fitted into the recessed portions 14b and 14b 'of the first coupling element, and the adapter is rotated to the first coupling element so that the tongue is locked to the first locking protrusion. Connection between flat wiper blade and wiper arm. The method of claim 2, The second locking device includes second locking protrusions 136a and 136b respectively formed adjacent to the first connection part on an inner surface facing the sidewall part. Connection between flat wiper blade and wiper arm. The method of claim 3, Each of the side wall portions is formed by cutting a portion of the upper end and includes clamping bars 131a and 132a that are elastically deformable in and out of the side wall portions. The second locking protrusions are respectively located on the facing surface of the clamping bar. Connection between flat wiper blade and wiper arm. The method of claim 4, wherein A cover 140 rotatably coupled to the front end of the side wall, the cover 140 being configured to cover a portion of the first coupling element and a portion of the second coupling element; Further comprising a cover locking device (131e, 132e, 142a, 142b) for locking the cover 140 to the adapter Connection between flat wiper blade and wiper arm. The method of claim 5, The cover has support plates 144a and 144b disposed on an inner surface of the cover and formed to be adjacent to an outer surface of a portion of the sidewall portion where the first locking protrusion is located and an outer surface of the clamping bar when the cover is locked to the adapter. doing Connection between flat wiper blade and wiper arm. The method of claim 1, The fifth locking device is disposed between the sidewall portions and the bearing holes 138a and 138b which are formed adjacent to the fitting holes in each of the sidewall portions and through which the pins of the fifth coupling element can pass. Including latching elements 138c and 138d elastically engaging the annular groove. Connection between flat wiper blade and wiper arm. The method of claim 7, wherein The latching element includes a latching bar 138d extending from the second connection portion and a latching portion 138c disposed on the latching bar 138d and elastically bitable to the annular groove. Connection between flat wiper blade and wiper arm. The method of claim 1, The joint has elements 111a, 111b, 113 for fitting to the frame, The joint and the frame are fixed by fitting along the longitudinal direction of the frame Connection between flat wiper blade and wiper arm. The method of claim 1, The adapter further includes a fourth connecting portion 133c positioned at the rear end of the side wall portion and inserted into the vertical wall portion of the bracket. Connection between flat wiper blade and wiper arm. The method of claim 1, The bracket includes a ridge portion 121d protruding protruded between the side wall portions at a front end thereof. Connection between flat wiper blade and wiper arm.

Images