KR20160135092A - Connection clip for connectining wiper blase with wiper arm and wiper blade including the same - Google Patents

Abstract

In a wiper blade, according to an embodiment of the present invention, comprises: a wiper strip to wipe a glass surface of a vehicle; a lever assembly to support the wiper strip; and a cover unit to accommodate the lever assembly, the cover unit including a connection clip of a resin material combined to the cover unit with an insert injection process, the connection clip including a connection axis, and a pair of supporting units formed on both ends of the connection axis and faced each other. In the supporting unit, the cross section which is perpendicular to a width direction of the wiper blade includes a double width unit and a narrow width unit. The thickness of a vertical direction of the wiper blade of a narrow width unit is able to be narrower than the thickness of the vertical direction of the wiper blade of the double width unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a connecting clip for connecting a wiper arm to a wiper blade, and a wiper blade including the connecting clip. [0002]

The present invention relates to a connecting clip for connecting a wiper blade and a wiper arm, and a wiper blade including the connecting clip.

In general, a wiper blade is provided to prevent foreign objects, snow or rain from being disturbed during operation of a vehicle to prevent disturbance of the driver's front clock. By driving the link device connected to the wiper arm, .

When the wiper blade makes a reciprocating motion, both ends of the wiper blade have different travel distances for the same time. Specifically, as shown in Fig. 1, while the end of the wiper blade 1 remote from the rotation axis moves by the distance of (a), the end of the wiper blade 1 closer to the rotation axis is moved by the distance of (b) Move. At this time, the angular speeds of both ends of the wiper blade 1 are maintained to be equal to each other depending on the conditions such as the pressing force of the both ends of the wiper blade 1 to press the windshield, the state of the windshield surface, the state of the wiper strip, it's difficult. Therefore, when the wiper blade 1 reciprocates, the wiper blade 1 is twisted in the width direction, as shown in Figs. 2 and 3. When an operator who produces, assembles, repairs or replaces the wiper blade 1 grasps the wiper arm 2 and the wiper blade 1 at the same time or when the wiper blade 1 is delivered and stored, The wiper blade 1 may be twisted in the width direction even when the wiper blade 1 is handled, for example, when the wiper blade 1 and the wiper blade 1 are subjected to a load. Further, when the wiper blade 1 is operated, when the user restrains the wiper blade 1 by hand, when the reciprocating rotary motion of the wiper blade 1 is locally restrained due to snowfall or other foreign matter, The wiper blade 1 may be twisted in the width direction even when the wiper blade 1 is used, for example, when the wiper blade 1 is caught by the wash tool. In this case, stress is concentrated in the narrow region 5 where the connection shaft 3 of the wiper blade 1 to which the wiper arm 2 is connected and the side wall 4 of the wiper blade 1 are connected, 1 and the side wall 4 of the wiper blade 1 are easily broken.

Conventionally, in order to solve such a problem, there has been a method of inserting a connection shaft of a metallic material into a cover portion of a wiper blade. However, when the connection shaft of the metallic material is insert-molded, the contact area between the cover portion of the wiper blade, which is a resin material, and the connection axis of the metallic material is small, and the bonding force is reduced. As a result of the difference in thermal expansion coefficient between the cover portion, It is difficult to control the dimensions of the inner side surface of the cover portion into which the wiper arm is inserted due to the difference in thermal expansion coefficient between the cover portion which is the resin material and the connection shaft which is the metal material by the section, There is a problem in that a separate oil removing process is further required in order to increase the bonding force between the connection shaft and the cover portion. Further, there has been a method of injecting a cover portion of a wiper blade in which thick connecting shafts are integrally formed. However, when the injection molding is performed with the single-piece synthetic resin material, the thickness of the side wall of the cover portion where the connection shaft is located is larger than the thickness of the side wall of the cover portion where the connection shaft is not positioned, The side wall of the cover portion of the portion where the connecting shaft is located is contracted more than the side wall of the cover portion of the portion where the connecting shaft is not located. Therefore, when the side wall of the cover portion is viewed from the outside after cooling, the portion where the connection shaft is located is more depressed than the portion where the connection shaft is not positioned, resulting in a poor appearance. In addition, when the connecting shaft is thickened to secure the strength, compatibility with the wiper arms to be fastened is deteriorated.

Further, in the process of molding the cover portion, the connecting shaft is molded in a state where it is not aligned at the correct position, the appearance becomes poor, the coupling force between the connecting shaft and the cover portion is deteriorated and the connecting shaft of the wiper blade and the cover portion of the wiper blade There is a problem that the connection part is easily broken.

The object of the present invention is to solve the above-mentioned problems.

According to the present invention, there is provided a connection clip of a resin material having a higher bending strength than that of a cover part, which is coupled to the cover part by an insert injection process, and a wiper blade including the same.

According to the present invention, there is provided a connection clip having a good appearance and a high coupling force between the connection clip and the cover part, even if the connection part and the connection clip are engaged in a state where the connection clip is not aligned at the correct position, and a wiper blade including the connection clip .

Further, a wiper blade according to an embodiment of the present invention includes: a wiper strip for wiping a glass surface of a vehicle; A lever assembly for supporting the wiper strip; And a cover portion coupled to the wiper arm and receiving the lever assembly, wherein the cover portion includes a connection clip of a resin material coupled to the cover portion through an insert injection process, And a pair of support portions formed on both ends of the connection shaft and facing each other, wherein the cross section of the support portion perpendicular to the width direction of the wiper blade includes a wide portion and a narrow portion, The thickness of the wiper blade in the key direction may be smaller than the thickness in the key direction of the wiper blade of the wide portion.

Here, the width of the narrow portion may be smaller in the key direction as the wiper blade is further away from the connecting shaft in the longitudinal direction of the wiper blade.

An object of the present invention is to solve the above-mentioned problems.

According to the present invention, it is possible to provide a connection clip of a resin material having a higher bending strength than that of the cover part, and a wiper blade including the same, which is coupled to the cover part through an insert injection process.

According to the present invention, it is possible to provide a connection clip having a good appearance and a high coupling force between the connection clip and the cover portion, and a wiper blade including the connection clip, even if the cover portion and the connection clip are engaged with each other, have.

1 is a view for explaining a reciprocating rotational motion of a wiper blade.
Fig. 2 is a view for explaining that twisting occurs in the width direction of the wiper blade. Fig.
FIG. 3 is a view for showing a fastening part of a wiper arm and a wiper blade when twist occurs in the width direction of the wiper blade. FIG.
4 is a perspective view showing a wiper blade and a wiper arm including a connection clip according to the present invention.
5 is a perspective view showing a connection clip according to the first embodiment of the present invention.
6 is a plan view showing a state in which the connection clip according to the present invention is engaged with the cover portion.
FIGS. 7A and 7B are cross-sectional views showing a connection clip according to the first embodiment shown in FIG. 6 and a section taken along the line A-A ', which is a section perpendicular to the longitudinal direction of the wiper blade of the cover portion.
FIG. 7C is a cross-sectional view showing a connection clip according to the first embodiment shown in FIG. 6 and a section C-C ', which is a section perpendicular to the longitudinal direction of the wiper blade of the cover portion.
8 is a perspective view showing a connection clip according to a second embodiment of the present invention.
9A to 9H are cross-sectional views taken along the line B-B ', which is a section perpendicular to the longitudinal direction of the wiper blade of the connection clip according to the second embodiment of the present invention.
10A and 10B are cross-sectional views showing a connection clip according to the second embodiment shown in FIG. 6 and a cross section taken along the line C-C ', which is a section perpendicular to the longitudinal direction of the wiper blade of the cover portion.
11 to 13 are perspective views showing still another embodiment of the connection clip according to the second embodiment of the present invention.
Figs. 14A to 14E are cross-sectional views taken along the line A-A ', which is a section perpendicular to the width direction of the wiper blade of the connection clip according to the second embodiment of the present invention.
FIGS. 15A and 15B are cross-sectional views illustrating a connection clip according to the present invention shown in FIG. 6 and a section taken along the line B-B ', which is a section perpendicular to the width direction of the wiper blade of the cover portion.
16 to 18 are perspective views showing still another embodiment of the connection clip according to the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings. The detailed description of the constituent elements of the present invention will be omitted so as not to obscure the gist of the present invention with respect to what can be clearly understood by a person skilled in the art and easily reproduced by the prior art.

Hereinafter, a wiper blade including a connecting clip and a connecting clip according to the present invention will be described.

4 is a perspective view showing a wiper blade and a wiper arm including a connection clip according to the present invention.

4, the wiper blade 1 according to the present invention includes a wiper strip (not shown) for wiping the glass surface of a vehicle, a lever assembly (not shown) for supporting the wiper strip, a cover A connector 10, and a connector 20.

The wiper strip (not shown) directly contacts the glass surface of the vehicle to remove foreign matter from the glass surface. The wiper strip is made of an elastic material, that is, an elastic material such as a rubber material or an elastic synthetic material.

The lever assembly (not shown) directly supports the wiper strip. The lever assembly (not shown) may include a pair of yoke levers, and the yoke lever end of the yoke may support the wiper strip.

The cover portion 10 receives the lever assembly (not shown) and engages with the wiper arm 2. The wiper arm 2 transmits a pressing force to the cover portion 10 through the connector 20 and the cover portion 10 transmits the pressing force applied from the wiper arm 2 to the lever assembly (not shown) The assembly (not shown) transfers the pressing force to the wiper strip.

The cover portion 10 includes a pair of side walls 11 facing each other and a recess 12 formed between the pair of side walls 11 and a wiper arm 2, And a connection clip 100 for coupling with the connector 100.

≪ First Embodiment >

Hereinafter, the connection clip according to the first embodiment will be described.

Fig. 5 is a perspective view showing a connecting clip according to a first embodiment of the present invention, Fig. 6 is a plan view showing a state in which the connecting clip according to the present invention is engaged with the cover portion, Figs. 7a and 7b are views Sectional view taken along line A-A ', which is a section perpendicular to the longitudinal direction of the connection clip and the wiper blade of the cover portion according to the first embodiment of the present invention.

5, the connection clip 100 may include a pair of support portions 120 formed at both ends of the connection shaft 110 and the connection shaft 110 and facing each other. 6, the connection shaft 110 of the connection clip 100 is positioned in the recess 12 of the cover portion 10 so that the connection clip 100 and the cover portion 10 are coupled with each other. , Each support portion 120 can be coupled to a pair of side walls 11 of the cover portion 10, respectively.

At this time, the connection clip 100 is joined to the cover portion 10 using an insert injection process. Specifically, first, the connecting clip 100 is manufactured using an injection process. At this time, the connection clip 100 can be made of a resin material having a higher bending strength than the material of the cover portion 10. [ As described above, by using the connecting clip 100 having a higher bending strength than that of the cover portion 10, twisting occurs in the width direction of the wiper blade 1 as shown in Fig. 3, Even if the stress is concentrated on the surface of the substrate. Thereafter, in a state in which the pre-fabricated connection clip 100 is disposed in the mold for manufacturing the cover portion 10, an insert injection process for injecting the molten resin material, which is the material of the cover portion 10, Thereby joining the connecting clip 100 and the cover portion 10 together. At this time, since the connection clip 100 and the cover portion 10 are both made of resin, fusion bonding occurs between the connection clip 100 and the injection mold when the insert is injected. Therefore, the coupling force between the connection clip 100 and the cover portion 10 is increased, compared with the case where the metallic connection shaft is insert-molded.

5 and 6, the support portion 120 of the connection clip 100 is fixed to the wiper blade 1 so as to conform to the shape of the side wall 11 forming the recess 12 of the cover portion 10, And may be a long rectangular shape in the longitudinal direction of the frame. The length a of the wiper blade 1 in the support portion 120 of the connection clip 100 in the longitudinal direction may be greater than the height b in the key direction of the wiper blade 1 of the support portion 120. [ Therefore, the stress generated in the connection shaft 110 is dispersed in a wide area where the support portion 120 and the side wall 11 of the cover portion 10 are in contact with each other, so that breakage of the connection clip 100 can be effectively prevented.

7A, the connecting clip 100 and the cover portion 10 are formed such that the respective supporting portions 120 of the connecting clip 100 are completely inserted into the pair of side walls 11 of the cover portion 10, . ≪ / RTI > As described above, when the support portions 120 of the connection clip 100 are completely inserted into the pair of side walls 11 of the cover portion 10, the support portion 120 and the side wall 11 are in contact with each other As the area increases, the coupling force between the connection clip 100 and the cover portion 10 increases.

7B, the connection clip 100 and the cover portion 10 are formed such that at least a part of the inner side surface 122 of the support portion 120 of the connection clip 100 is formed in the cover portion 10 May be inserted into the recess 12 to be exposed. When the wiper arm 2 and the wiper blade 1 are engaged with each other, the end portion of the wiper arm 2 is positioned in the recess 12, so that the distance between the side walls 11 of the cover portion 10 can be precisely Need to manage. Thus, when the connecting clip 100 and the cover portion 10 are coupled with each other in such a manner that the inner side surface 122 of the supporting portion 120 is exposed to the recess 10 formed in the cover portion 10, The inner side surface of the support portion 120 of the connection clip 100 in which the distance between the inner side surfaces of the pair of support portions 120 is precisely controlled during the injection process is in contact with the mold for forming the cover portion 10 It is easy to manage the distance between the side walls 11 of the cover part 10 by intervals.

≪ Second Embodiment >

Hereinafter, the connection clip according to the second embodiment will be described.

Figs. 8, 11 to 13 and Figs. 16 to 18 are perspective views showing a connecting clip according to a second embodiment of the present invention, and Figs. 9A to 9H are perspective views of a connecting clip according to a second embodiment of the present invention, 10A and 10B are cross-sectional views taken along the line B-B 'of FIG. 6, which are perpendicular to the longitudinal direction of the blade, 14A to 14B are cross-sectional views taken along the line A-A ', which is a cross section perpendicular to the width direction of the wiper blade of the connecting clip according to the second embodiment of the present invention, 15A and 15B are cross-sectional views showing a connecting clip according to the present invention shown in FIG. 6 and a section taken along the line B-B ', which is a section perpendicular to the width direction of the wiper blade of the cover portion.

The connection clip 200 according to the second embodiment can be formed of a resin material and can be combined with the cover portion 10 through an insert injection process like the connection clip 100 according to the first embodiment . Hereinafter, differences from the first embodiment will be emphasized.

The connection clip 200 may include a pair of support portions 220 formed at both ends of the connection shaft 210 and the connection shaft 210 and facing each other.

8, 11 to 13 and 16 to 18, the support portion 220 includes a narrow portion 223 having a smaller width than other portions in a cross section perpendicular to the longitudinal direction of the wiper blade 1 .

8, the narrow portion 223 may be formed entirely at the upper end or the lower end of the support portion 220. [ 11, the narrow portion 223 may be formed only at a portion of the upper end or the lower end of the support portion 220, and as shown in FIGS. 12 and 13, The narrow portion 223 may not be formed.

FIG. 9A is a cross-sectional view taken along line B-B 'of FIG. 8 and FIG. 11, which is a section perpendicular to the longitudinal direction of the wiper blade of the connecting clip according to the second embodiment of the present invention, 13 is a cross-sectional view taken along line B-B 'of FIG. 13, which is a section perpendicular to the longitudinal direction of the wiper blade of the connection clip according to the second embodiment of the present invention. Sectional view taken along the line B-B ', which is a section perpendicular to the longitudinal direction of the wiper blade of the connection clip according to the second embodiment.

9A to 9H, the width d2 of the narrow portion 223 is larger than the width w2 of the wider portion 229 which is the thickest portion in the cross section perpendicular to the longitudinal direction of the wiper blade 1 of the support portion 220, May be smaller than the width (d1).

Specifically, as shown in FIG. 9A, the inner and outer surfaces of the narrow portion 223 may include inclined surfaces, and the outer surface may include inclined surfaces, as shown in FIG. 9B. As the inner side surface or the outer side surface of the narrow portion 223 includes the inclined surface, the width of the narrow portion 223 can be reduced as the distance from the connecting shaft 210 in the key direction of the wiper blade 1 is increased. Further, as shown in Fig. 9C, the narrow portion 223 may not include the inclined surface. The width d2 of the narrow portion 223 may not be smaller than the width of all other portions in the cross section perpendicular to the longitudinal direction of the wiper blade 1 of the support portion 220. [ Specifically, as shown in FIG. 9H, the width d2 of the narrow portion 223 is larger than the width d3 of the portion in the cross section perpendicular to the longitudinal direction of the wiper blade 1 of the support portion 220, May be smaller than the width d1 of the wide portion 229 which is a thick portion.

10A, when the support part 220 of the connection clip 200 and the side wall 11 of the cover part 10 are coupled in a substantially parallel state in the insert injection process, Can be stably placed in the side wall (11) of the part (10). However, in the process of disposing the connection clip 200 in the mold for manufacturing the cover portion 10, the connection shaft 210 of the connection clip 200 is fixed in position by the fixing device, The support portion 220 of the support member 200 may not be aligned at the correct position. Further, when the molten resin material, which is the material of the cover portion 10, is injected into the mold, since the injection pressure is very high and the connecting clip 200 is formed of a resin material of a flexible material, The supporting part 220 of the connecting clip 200 can be deformed by the applying pressure, unlike the connecting shaft 210 of the connecting clip 200. Accordingly, the connection clip 200 and the cover portion 10 can be engaged in a state where the support portion 220 of the connection clip 200 is deformed.

7C and 10B are views showing the connection clip of the present invention and the wiper blade of the cover portion of the present invention shown in Fig. 6 in a state in which the supporting portion of the connecting clip according to the present invention is engaged with the cover portion in a state in which the error is generated in the width direction of the wiper blade, Sectional view taken along the line C-C 'in FIG.

7C, the upper or lower end of the support portion 120 of the connection clip 100 may protrude from the side wall 11 of the cover portion 10. In this case, The connection clip 100 protrudes outside or inward of the side wall 11 of the cover portion 10 or the outer surface of the side wall 11 of the cover portion 10 Or a portion having a very small distance between the inner surface and the outer surface 121 or the inner surface 122 of the support portion 120 of the connection clip 100 disposed inside the side wall 11 of the cover portion 10, The outer appearance of the portion 10 becomes poor and the coupling force between the connecting clip 100 and the cover portion 10 is deteriorated.

In contrast, in the case of the connecting clip 200 according to the second embodiment, even if the supporting portion 220 of the connecting clip 200 is engaged with the cover portion 10 in a state in which the error is generated in the width direction of the wiper blade 1 The connection clip 200 may protrude outward or inward of the side wall 11 of the cover portion 10 or may protrude inwardly of the side wall 11 of the cover portion 10 by the narrow portion 223, 11 and the outer side surface 221 or the inner side surface 222 of the support portion 220 of the connection clip 200 disposed inside the side wall 11 of the cover portion 10 is less than a predetermined distance The connecting clip 200 and the cover portion 10 can be stably engaged.

8, 11 to 13 and 16 to 18, the support portion 220 is formed so that the thickness of the wiper blade 1 in the key direction is smaller than the other portions in the cross section perpendicular to the width direction of the wiper blade 1 And may include narrowing portion 224.

14A is a cross-sectional view taken along the line A-A ', which is a section perpendicular to the width direction of the wiper blade of the connection clip according to the second embodiment of the present invention shown in Figs. 8, 11 and 13, 12 is a sectional view taken along the line A-A ', which is a section perpendicular to the width direction of the wiper blade of the connection clip according to the second embodiment of the present invention shown in FIG. 12, and FIG. Sectional view taken along the line A-A ', which is a section perpendicular to the width direction of the wiper blade of the connection clip according to the second embodiment.

14A to 14E, the key-direction thickness h2 of the narrow portion 224 is larger than the width w2 of the support portion 220, which is the thickest portion in the cross section perpendicular to the width direction of the wiper blade 1, Directional thickness h1 of the key 229 '.

Specifically, as shown in Fig. 14A, the upper and lower surfaces of the narrow portion 224 may include inclined surfaces. As the upper or lower surface of the narrow portion 224 includes the inclined surface and the distance from the connecting shaft 210 in the longitudinal direction of the wiper blade 1 becomes smaller in the key direction of the narrow portion 224 have. Further, as shown in Fig. 14B, the narrow portion 224 may not include an inclined surface. The keying direction thickness h2 of the narrowing portion 224 may not be smaller than the keying direction thickness of all other portions in the cross section perpendicular to the width direction of the wiper blade 1 of the support portion 220. [ 14E, the thickness h2 in the key direction of the narrow portion 224 is smaller than the thickness h2 in the key direction in the cross section perpendicular to the width direction of the wiper blade 1 of the support portion 220, And may be smaller than the key-direction thickness h1 of the wide portion 229 'which is the thickest portion.

As described above, in the insert injection process, the support portions 220 of the connection clip 200 can be coupled without being aligned at the correct positions.

15A and 15B are views showing the connection clip of the present invention and the wiper blade of the cover portion shown in Fig. 6 in the state where the supporting portion of the connecting clip according to the present invention is engaged with the cover portion in a state in which the error is generated in the key direction of the wiper blade, Sectional view taken along the line B-B 'in FIG.

15A, one end or the other end of the left side of the support portion 120 of the connection clip 100 is connected to the side wall 11 (see FIG. 11) of the cover portion 10. In this case, The connecting clip 100 protrudes to the upper side or the lower side of the side wall 11 of the cover portion 10 or the upper surface of the side wall 11 of the cover portion 10 Or the lower surface of the support portion 120 of the connection clip 100 disposed in the side wall 11 of the cover portion 10 is generated in the cover portion 10, And the coupling force between the connection clip 100 and the cover portion 10 is lowered.

On the other hand, in the case of the connecting clip 200 according to the second embodiment, even if the supporting part 220 of the connecting clip 200 is engaged with the cover part 10 in a state where an error occurs in the key direction of the wiper blade 1 The connecting clip 200 protrudes upward or downward from the side wall 11 of the cover portion 10 or protrudes upward or downward from the side wall 11 of the cover portion 10 by the narrow portion 224, Since the distance between the upper surface or the lower surface of the support portion 220 of the connection clip 200 disposed inside the side wall 11 of the cover portion 10 is prevented from becoming smaller than a predetermined distance, 200 and the cover portion 10 can be stably engaged.

16, at least one groove 225 may be formed on the inner side surface 222 or the outer side surface 221 of the support 220. The groove portion 225 may be formed in the longitudinal direction of the wiper blade 1. [ When the groove portion 225 is formed in the longitudinal direction of the wiper blade 1, the molten resin material that is the material of the cover portion 10 when the insert is injected flows into the groove portion 225, The coupling force of the wiper blade 1 in the key direction between the cover portion 10 and the cover portion 10 is increased. Further, the groove portion 225 may be formed in the key direction of the wiper blade 1. When the groove portion 225 is formed in the key direction of the wiper blade 1, the molten resin material that is the material of the cover portion 10 when the insert is injected flows into the groove portion 225, And the cover portion (10) in the longitudinal direction of the wiper blade (1) is increased. The groove 225 in the longitudinal direction or the key direction of the wiper blade 1 is formed on the inner side surface 222 or the outer side surface 221 of the support portion 220 of the connection clip 200, A protrusion in the longitudinal direction or key direction of the wiper blade 1 may be formed.

Referring to FIG. 17, a plurality of protrusions 228 may be formed on the inner surface 222 or the outer surface 221 of the support 220. When the plurality of protrusions 228 are formed, the molten resin material flows between the protrusions and the protrusions when the insert is injected, so that the overall bonding force between the connection clip 200 and the cover portion 10 is increased.

18, the surface of the inner surface 222 or the outer surface 221 of the support 220 may be roughened. If the surface of the inner side surface 222 or the outer side surface 221 of the support portion 220 of the connection clip 200 is rough, the overall bonding force between the connection clip 200 and the cover portion 10 is increased. The surface of the mold can be roughened through electrical discharge machining when the metal mold for manufacturing the connection clip 200 is manufactured. Further, at the time of corrosion processing of the metal mold after the electric discharge machining, the surface of the metal mold can be roughened by adjusting the corrosion specification. Alternatively, the surface of the metal mold can be roughened by eliminating the abrasive processing on the metal mold surface after the electrical discharge machining and the corrosion machining. When the connecting clip 200 is manufactured using the rough surface mold, the surface of the inner side surface 222 or the outer side surface 221 of the supporting portion 220 of the connecting clip 200 may be roughened.

Referring to FIG. 16, a chamber 226 may be formed at the upper or lower end of the inner surface 222 of the support 220. In the process of arranging the pre-manufactured connection clip 200 in the mold for fabricating the cover part 10, the connection clip 200 must be inserted into the space between the very narrow metal molds. Even when the upper or lower end of the supporting portion 220 of the connecting clip 200 contacts the mold, the mold is brought into contact with the inclined surface of the chamber 226, So that the worker can easily work.

16, an arm fixing groove 227 may be formed on the inner side surface 222 of the support portion 220 of the connection clip 200 to fix the end portion of the pin type arm. An arm fixing groove 227 is formed in a mold for manufacturing the cover portion 10 so as to form an arm fixing groove 227 to which the end portion of the pin type arm is fixed on the inner side surface of the side wall 11 of the cover portion 10. [ It is easier to form the shape for forming the female fixing groove 227 in the metal mold for manufacturing the connecting clip 200 than to add the shape for forming the female fixing groove 227. [ In addition, since the female fixing groove 227 is formed in the connecting clip 200 in which the distance between the inner side surfaces of the pair of supporting portions 220 is precisely controlled, the dimension of the female fixing portion can be easily managed.

Referring to FIG. 16, the connection shaft 210 of the connection clip 200 may have a thick portion 211 formed therein. Specifically, a thick portion 211 may be formed at a portion where the connection shaft 210 is in contact with the supporter 220. When the wiper blade 1 is twisted in the width direction, the stress is concentrated at the portion where the connection shaft 210 and the support portion 220 are in contact with each other. Therefore, as the portion where the connection shaft 210 contacts the support portion 220 becomes thicker The damage prevention effect is increased. 9E to 9G, the thickness t2 of the portion of the connecting shaft 210 contacting the supporting portion 220 is greater than the thickness t1 of the connecting shaft 210, Can be formed. As shown in Fig. 9E, may be in the form of an outwardly convex round, and may be inwardly concave round as shown in Fig. 9F. Alternatively, as shown in FIG. 9G, it may be a cylindrical shape that is thicker than the connecting shaft 211. Further, in order to align the connection clip 200 at the correct position inside the mold at the time of injection of the insert, a portion where the connection clip 200 is in contact with the mold is required. At this time, when the mold is brought into contact with the outer peripheral surface 212 of the thick portion 211, movement of the connecting clip 200 in the key direction and the longitudinal direction of the wiper blade 1 is restrained by the mold, As shown in Fig.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. 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 inventions. It will be appreciated that many variations and applications not illustrated are possible. That is, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

1: Wiper blade
2: Wiper arm
10: Cover part
11: side wall
12: recess
20: Connector
100, 200: Connection clip
110, 210: connection axis
120, 220:
121, 221: Outer side
122, 222: inner side
211: thickening
223, 224:
225: Groove
226: chamber
227: female fixing groove
228: projection

Claims (25)

A wiper strip wiping the glass surface of the vehicle;
A lever assembly for supporting the wiper strip; And
And a cover portion coupled to the wiper arm and receiving the lever assembly, the wiper blade comprising:
The cover portion includes a connection clip of a resin material which is coupled to the cover portion through an insert injection process,
Wherein the connection clip includes a connection shaft and a pair of support portions formed at both ends of the connection shaft and facing each other,
In the support portion, a cross section perpendicular to the longitudinal direction of the wiper blade includes a wide portion and a narrow portion,
Wherein a width of the wiper blade in the narrow portion is smaller than a width in the width direction of the wiper blade of the wide portion,
Wherein at least one of an inner side surface and an outer side surface of the support portion has a groove or a protrusion formed in a longitudinal direction or a key direction of the wiper blade,
wiper blade. A wiper strip wiping the glass surface of the vehicle;
A lever assembly for supporting the wiper strip; And
And a cover portion coupled to the wiper arm and receiving the lever assembly, the wiper blade comprising:
The cover portion includes a connection clip of a resin material which is coupled to the cover portion through an insert injection process,
Wherein the connection clip includes a connection shaft and a pair of support portions formed at both ends of the connection shaft and facing each other,
In the support portion, a cross section perpendicular to the longitudinal direction of the wiper blade includes a wide portion and a narrow portion,
Wherein a width of the wiper blade in the narrow portion is smaller than a width in the width direction of the wiper blade of the wide portion,
Wherein a plurality of projections are formed on at least one of an inner side surface and an outer side surface of the support portion,
wiper blade. A wiper strip wiping the glass surface of the vehicle;
A lever assembly for supporting the wiper strip; And
And a cover portion coupled to the wiper arm and receiving the lever assembly, the wiper blade comprising:
The cover portion includes a connection clip of a resin material which is coupled to the cover portion through an insert injection process,
Wherein the connection clip includes a connection shaft and a pair of support portions formed at both ends of the connection shaft and facing each other,
In the support portion, a cross section perpendicular to the longitudinal direction of the wiper blade includes a wide portion and a narrow portion,
Wherein a width of the wiper blade in the narrow portion is smaller than a width in the width direction of the wiper blade of the wide portion,
Wherein a chamber is formed at an upper end or a lower end of the inner side surface of the support portion,
wiper blade. A wiper strip wiping the glass surface of the vehicle;
A lever assembly for supporting the wiper strip; And
And a cover portion coupled to the wiper arm and receiving the lever assembly, the wiper blade comprising:
The cover portion includes a connection clip of a resin material which is coupled to the cover portion through an insert injection process,
Wherein the connection clip includes a connection shaft and a pair of support portions formed at both ends of the connection shaft and facing each other,
In the support portion, a cross section perpendicular to the longitudinal direction of the wiper blade includes a wide portion and a narrow portion,
Wherein a width of the wiper blade in the narrow portion is smaller than a width in the width direction of the wiper blade of the wide portion,
And an arm fixing groove for fixing an end portion of the pin type arm is formed on an inner surface of the support portion,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the width of the narrow portion is smaller in the key axis direction of the wiper blade,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the bending strength of the connection clip is higher than the bending strength of the cover portion,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the connection clip is fused with the cover portion,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the length of the support portion in the longitudinal direction of the wiper blade is larger than the height in the key direction of the wiper blade of the support portion,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the cover portion includes a pair of side walls opposed to each other, and the support portion is coupled to the side wall in a completely inserted state,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the cover portion includes a pair of opposing sidewalls and a recess formed between the pair of sidewalls, wherein at least a portion of an inner surface of the support portion is inserted into the recess so as to be exposed to the recess,
wiper blade. 5. The method according to any one of claims 1 to 4,
The surface of the inner or outer surface of the support portion is rough,
wiper blade. 5. The method according to any one of claims 1 to 4,
Wherein the connection shaft is in contact with the support portion,
wiper blade. A wiper strip wiping the glass surface of the vehicle;
A lever assembly for supporting the wiper strip; And
And a cover portion coupled to the wiper arm and receiving the lever assembly, the wiper blade comprising:
The cover portion includes a connection clip of a resin material which is coupled to the cover portion through an insert injection process,
Wherein the connection clip includes a connection shaft and a pair of support portions formed at both ends of the connection shaft and facing each other,
In the support portion, a cross section perpendicular to the width direction of the wiper blade includes a wide portion and a narrow portion,
Wherein a width direction of the wiper blade of the narrow width portion is smaller than a thickness direction of the wiper blade of the wide width portion,
wiper blade. 14. The method of claim 13,
Wherein the width of the wiper blade is smaller in the key direction than the width of the wiper blade in the longitudinal direction of the wiper blade,
wiper blade. 14. The method of claim 13,
Wherein the bending strength of the connection clip is higher than the bending strength of the cover portion,
wiper blade. 14. The method of claim 13,
Wherein the connection clip is fused with the cover portion,
wiper blade. 14. The method of claim 13,
Wherein the length of the support portion in the longitudinal direction of the wiper blade is larger than the height in the key direction of the wiper blade of the support portion,
wiper blade. 14. The method of claim 13,
Wherein the cover portion includes a pair of side walls opposed to each other, and the support portion is coupled to the side wall in a completely inserted state,
wiper blade. 14. The method of claim 13,
Wherein the cover portion includes a pair of opposing sidewalls and a recess formed between the pair of sidewalls, wherein at least a portion of an inner surface of the support portion is inserted into the recess so as to be exposed to the recess,
wiper blade. 14. The method of claim 13,
Wherein at least one of an inner side surface and an outer side surface of the support portion has a groove or a protrusion formed in a longitudinal direction or a key direction of the wiper blade,
wiper blade. 14. The method of claim 13,
Wherein a plurality of projections are formed on at least one of an inner side surface and an outer side surface of the support portion,
wiper blade. 14. The method of claim 13,
The surface of the inner or outer surface of the support portion is rough,
wiper blade. 14. The method of claim 13,
Wherein a chamber is formed at an upper end or a lower end of the inner side surface of the support portion,
wiper blade. 14. The method of claim 13,
And an arm fixing groove for fixing an end portion of the pin type arm is formed on an inner surface of the support portion,
wiper blade. 14. The method of claim 13,
Wherein the connection shaft is in contact with the support portion,
wiper blade.

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