阅读说明：本技术 车辆用雨刮器 (Wiper for vehicle ) 是由 金克泰 于 2019-12-06 设计创作，主要内容包括：本发明提供一种车辆用雨刮器,该车辆用雨刮器包括：转接器,其安装在雨刮器操作臂上；转接器保持器,其用于紧固转接器；框架保持器,其中紧固至框架保持器的转接器保持器和转接器被联接以便在其顶部处被暴露；左侧一级杆和右侧一级杆,其分别设置在框架保持器的左侧部和右侧部上,使得其面向彼此的每个端部以可附接或可脱离的方式分别联接至框架保持器的左侧部和右侧部；左侧二级杆和右侧二级杆,其通过两个杆接头分别连接至左侧一级杆和右侧一级杆的另一端部；四个三级杆,其具有从其上端部突出的联接器,以便对应地装配到在左侧二级杆和右侧二级杆中的每一者的两个端部处形成的四个联接槽中；以及橡胶刮片,其沿水平方向组装和装配到在四个三级杆中的每一者的两个端部处形成的八个刮片支撑孔中,其中,左侧一级杆和右侧一级杆以及左侧二级杆和右侧二级杆中的每一者由具有弹性的弹性板簧金属材料制成,并且四个三级杆由弹性工程塑料制成。(The invention provides a vehicle wiper blade, comprising: an adapter mounted on the wiper operating arm; an adapter holder for fastening an adapter; a frame holder, wherein an adaptor holder fastened to the frame holder and an adaptor are coupled so as to be exposed at a top thereof; left and right primary bars provided on left and right sides of the frame holder, respectively, such that each end thereof facing each other is coupled to the left and right sides of the frame holder in an attachable or detachable manner, respectively; left and right secondary bars connected to the other ends of the left and right primary bars, respectively, by two bar joints; four tertiary bars having couplers protruded from upper ends thereof so as to be correspondingly fitted into four coupling grooves formed at both ends of each of the left and right secondary bars; and a rubber blade assembled and fitted into eight blade support holes formed at both ends of each of the four tertiary bars in a horizontal direction, wherein each of the left and right primary bars and the left and right secondary bars is made of an elastic leaf spring metal material having elasticity, and the four tertiary bars are made of an elastic engineering plastic.)

1. A wiper blade for a vehicle, comprising: the adapter is mounted on the wiper operating arm; an adapter holder configured to hold the adapter; a frame holder coupled to the adaptor holder such that the adaptor holder and the adaptor held therein are exposed upward; left and right primary bars provided on left and right end portions of the frame holder, respective one end portions of the left and right primary bars facing each other being detachably coupled to the left and right end portions of the frame holder; a left secondary lever and a right secondary lever connected to the other ends of the left primary lever and the right primary lever, respectively, through two lever joints; four tertiary bars on which couplers are respectively formed in a protruding manner to fit into each of four coupling clips formed at both ends of each of the left and right secondary bars; and a wiper blade of a rubber material horizontally assembled to eight wiper blade claw brackets formed at both ends of each of the four tertiary bars,

wherein each of the left and right primary bars and the left and right secondary bars is made of an elastic leaf spring of a metal material, and

the four tertiary bars are made of elastic engineering plastics.

2. The vehicle wiper blade of claim 1, wherein each of the left and right primary bars and the left and right secondary bars has a cross section curved in any one shape selected from an inverted V shape and an arc shape.

3. The vehicle wiper blade of claim 1, wherein the rod joint comprises:

an upper joint provided on the other end portion of each of the left and right primary levers; and

a lower joint disposed below each of the left secondary bar and the right secondary bar,

wherein the other end portions of the left and right primary bars have first through holes penetrating vertically therethrough,

a second through hole is formed in the central portions of the left secondary lever and the right secondary lever in a vertically penetrating manner,

the upper joint or the lower joint has an insertion protrusion formed on the upper joint or the lower joint through the first through-hole and the second through-hole, and

the lower joint or the upper joint has an insertion groove formed therein corresponding to the insertion protrusion.

4. The wiper blade for a vehicle according to any one of claims 1 to 3, wherein the coupling clips respectively formed at both end portions of the left secondary lever and the right secondary lever include:

a guide portion having two branch sections extending outward from the two ends of the left secondary lever and the right secondary lever by a predetermined length in a longitudinal direction of the secondary lever and formed in a shape in which a width between the branch sections increases outward from the two ends of the secondary lever; and

a clip hole formed between the branch sections of the guide portion adjacent to the both ends of the secondary lever with one side of the clip hole opened toward the guide portion to define an opening, the clip hole having a shape in which a diameter thereof is reduced outward from the both ends of the secondary lever so that a coupler guided by the guide portion is inserted and fixed.

5. The vehicle wiper blade of claim 4, wherein the coupler comprises:

a coupling portion formed on the coupler in such a manner as to protrude upward from an upper end portion of the tertiary bar; and

a latch portion formed on the coupler in such a manner as to extend upward from an upper side of the coupling portion and having a larger diameter than the coupling portion to prevent the left and right secondary levers from being disengaged upward.

6. The wiper blade of claim 5, wherein when the left and right secondary levers and the tertiary lever are arranged to be orthogonal to each other, the coupling portion is formed to have a diameter in the longitudinal direction of the tertiary lever smaller than that of the clip hole to fit the guide portion into the clip hole through the guide portion, and

in a state where the coupling part is fitted into the clip hole, when the left and right secondary bars or the tertiary bar is rotated to arrange the left and right secondary bars and the tertiary bar on the same line, the coupling part is formed to have a diameter in a width direction of the tertiary bar larger than that of the clip hole, thereby preventing the coupling part from being separated from the clip hole.

Technical Field

The present invention relates to a wiper blade for a vehicle, and particularly to the following wiper blade for a vehicle: the wiper blade for a vehicle is capable of performing a wiping operation with elastically coming into close contact with a windshield of the vehicle, reducing the number of parts to reduce manufacturing costs, and improving productivity by facilitating assembly of the wiper blade for a vehicle.

Background

A wiper for a vehicle is a device for wiping off rainwater or foreign substances flowing down from a windshield of the vehicle when it rains, and is configured such that a wiper operation arm that receives a driving force of a wiper motor installed in an engine room through a link mechanism reciprocates at a predetermined angle. A wiper blade assembly having a blade made of a rubber material attached to one side thereof is detachably mounted at a tip end of the wiper operation arm.

Fig. 1 is an exploded perspective view illustrating respective parts of a conventional wiper blade for a vehicle.

As shown in fig. 1, a conventional wiper blade 100 for a vehicle detachably mounted to a wiper arm includes: a frame body 102 to which the adaptor 101 is coupled, the tip end of the wiper arm 200 being mounted to the adaptor 101; anchor joints 103, the anchor joints 103 being symmetrically assembled to both ends of the frame body 102; a pair of first frames 104 rotatably assembled at each of the two side anchor joints 103 symmetrically assembled to both end portions of the frame body 102, and a plurality of pairs of second frames 106 rotatably assembled to both end portions of the pair of first frames 104 in a symmetrical manner, respectively; a blade 108 made of a rubber material, the blade 108 being horizontally inserted into claw brackets 107 formed at both ends of each of the plurality of pairs of second frames 106 so as to be replaceable; and plate-shaped metal spring rails 109 embedded in both side portions of the blade 108 to apply elastic force such that the blade 108 is elastically brought into close contact with the surface of the windshield of the vehicle.

The conventional wiper 100 for a vehicle having the above-described configuration receives power from the wiper operating arm 200, and in order to finally convert the power into an orbital motion of the blade 108 through a link mechanism, the wiper 100 for a vehicle is configured such that forces acting on the wiper operating arm 200, the blade 108, and the metal spring rail 109 and the like that provide a constant elastic strength to the blade 108 are concentrated at one position to operate the blade by driving the blade operating arm 200. In addition, the first frame 104 and the second frame 106 are arranged on the frame body 102 in an evenly distributed manner, and the frame body 102 is configured to have a plurality of holes penetrating the frame body 102 to facilitate drainage and reduce weight.

Further, the wiper blade 108 is configured to have stepped portions formed in the wiper blade 108 in the horizontal direction to be horizontally inserted into the claw brackets 107 formed at both ends of the second frame 106, and slide insertion grooves symmetrically formed in the wiper blade 108 so that the metal spring rails 109 can be inserted in the horizontal direction.

However, the conventional wiper blade 100 for a vehicle having the above-described configuration is formed by assembling the frame main body 102, the first frame 104 and the second frame 106, and the metal spring rail 109, which are press-molded using a steel plate as a material, on both side portions of the blade 108 made of a rubber material. Therefore, this structure has problems in that a phenomenon in which the connecting portions and the joint portions of the respective components are frozen may occur in winter, so that the wiper blade may not operate normally, and defects such as elastic deformation of the wiper blade may occur, so that the surface of the windshield of the vehicle may not be scraped normally.

Further, the conventional wiper blade assembly has a structure in which a portion for elastically pressing the blade is composed of points based on a plurality of rivet joints 105, so that it is difficult to transmit the pressing force to the entire blade 108 with an evenly distributed load. As a result, not only a significant local difference in the wear rate of the blade 108 occurs, but also a phenomenon occurs in which the entire surface of the windshield of the vehicle cannot be uniformly wiped due to separation caused by the lifting of the blade.

Further, since the conventional wiper blade 100 for a vehicle requires parts such as the rivet joint 105 to couple the first frame 104 and the second frame 106, the assembly of the conventional wiper blade 100 for a vehicle is inconvenient and time-consuming, thereby causing an increase in manufacturing costs and a reduction in productivity.

[ Prior art documents ]

[ patent document ]

(patent document 1) Korean Utility model registration number 20-0282487 (published in 2002, 7 and 22)

(patent document 2) Korean patent registration No. 10-0616259 (published in 8/21/2006)

(patent document 3) Korean patent registration No. 10-0682841 (published in 2007, 2, 15)

(patent document 4) korean patent registration No. 10-1691427 (published in 2017 on 1 month and 9 days)

Disclosure of Invention

In view of the above circumstances, an object of the present invention is to provide a wiper blade for a vehicle capable of performing a wiping operation with elastically brought into close contact with a windshield glass of the vehicle, reducing the number of parts to reduce manufacturing costs, and improving productivity by facilitating assembly of the wiper blade for a vehicle.

In order to achieve the above object, according to one aspect of the present invention, there is provided a wiper blade for a vehicle, including: the adapter is arranged on the wiper operating arm; an adapter holder configured to hold an adapter; a frame holder coupled to the adapter holder such that the adapter holder and the adapter held in the adapter holder are exposed upward; left and right primary bars provided on left and right end portions of the frame holder, respective one end portions of the left and right primary bars facing each other being detachably coupled to the left and right end portions of the frame holder; the left secondary rod and the right secondary rod are respectively connected to the other ends of the left primary rod and the right primary rod through two rod joints; four tertiary bars on which couplers are respectively formed in a protruding manner to fit into each of four coupling clips formed at both ends of each of the left and right secondary bars; and wiper blades of a rubber material horizontally assembled to the eight brackets with claws formed at both ends of each of the four tertiary bars, wherein each of the left and right primary bars and the left and right secondary bars is made of an elastic leaf spring of a metal material, and the four tertiary bars are made of an elastic engineering plastic.

Herein, each of the left and right primary bars and the left and right secondary bars may have a cross section curved in any one shape selected from an inverted V shape and an arc shape.

Further, the rod joint may include: an upper joint provided on the other end portion of each of the left and right primary levers; and a lower joint disposed below each of the left and right secondary bars, wherein a first through hole is formed in the other end portions of the left and right primary bars in a vertically penetrating manner, a second through hole is formed in the middle portions of the left and right secondary bars in a vertically penetrating manner, an insertion protrusion passing through the first and second through holes is formed on the upper or lower joint, and an insertion groove corresponding to the insertion protrusion is formed in the lower or upper joint.

Further, the coupling clips respectively formed at both ends of the left and right secondary bars may include: a guide portion having two branch sections extending outward from both ends of the left and right secondary bars by a predetermined length along a longitudinal direction of the secondary bars, and formed in a shape in which a width between the branch sections increases outward from both ends of the secondary bars; and a clamp hole formed between the branch sections of the guide portion adjacent to both ends of the secondary lever while one side thereof is opened toward the guide portion to define an opening in a shape in which a diameter thereof is reduced outward from both ends of the secondary lever, so that the coupler guided by the guide portion is inserted and fixed.

Further, the coupler may include: a coupling portion formed on the coupler in such a manner as to protrude upward from an upper end portion of the tertiary bar; and a latch portion formed on the coupler in such a manner as to extend upward from an upper side of the coupling portion and having a larger diameter than the coupling portion to prevent the left and right secondary levers from being disengaged upward.

Further, when the left and right secondary bars and the tertiary bar are arranged to be orthogonal to each other, the coupling portion may be formed to have a diameter in the longitudinal direction of the tertiary bar smaller than that of the clamp hole to fit the guide portion into the clamp hole through the guide portion, and in a state where the coupling portion is fitted into the clamp hole, when the left and right secondary bars or the tertiary bar is rotated to arrange the left and right secondary bars and the tertiary bar on the same line, the coupling portion may be formed to have a diameter in the width direction of the tertiary bar larger than that of the clamp hole, thereby preventing the coupling portion from being separated from the clamp hole.

According to the technical solution to solve the above problems, the present invention has the following effects.

According to the present invention, each of the left and right secondary bars has coupling clips formed at both ends thereof, and the tertiary bar has protruding couplers formed at upper ends thereof, the couplers being respectively fitted into the coupling clips, thereby reducing the number of parts to reduce manufacturing costs, and improving productivity by facilitating assembly thereof.

Further, according to the present invention, the primary lever and the secondary lever are made of an elastic leaf spring of a metal material, and the tertiary lever is made of an elastic engineering plastic, thereby performing a wiping operation with elastically close contact with a windshield of a vehicle.

Drawings

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 is an exploded perspective view illustrating respective parts of a conventional wiper blade for a vehicle;

fig. 2 is a front view illustrating a wiper blade for a vehicle according to the present invention;

fig. 3 is an exploded perspective view illustrating parts of the wiper blade for a vehicle shown in fig. 2;

fig. 4 is a perspective view illustrating a state where a left primary lever in the wiper blade for a vehicle according to the present invention is coupled to a frame holder;

fig. 5 is a perspective view illustrating a state where a right primary lever of a wiper blade for a vehicle according to the present invention is separated from a frame holder;

FIG. 6 is a cross-sectional view taken along line A-A in FIG. 3;

fig. 7 is a perspective view illustrating a state where a left primary lever and a left secondary lever in a wiper blade for a vehicle according to the present invention are coupled by a lever joint;

FIG. 8 is an exploded perspective view of the lever shown in FIG. 7;

FIG. 9 is a cross-sectional view taken along line B-B in FIG. 3;

fig. 10 is a perspective view illustrating a tertiary lever in a wiper blade for a vehicle according to the present invention;

fig. 11 is a perspective view and a partially enlarged view illustrating a state in which a secondary lever and a tertiary lever are arranged to be orthogonal to each other in a wiper blade for a vehicle according to the present invention;

fig. 12 is a perspective view and a partially enlarged view illustrating a state in which a coupler formed in a tertiary lever is coupled with a coupling clip formed in a secondary lever and the tertiary lever are arranged to be orthogonal to each other in the wiper blade for a vehicle according to the present invention;

fig. 13 is a perspective view and a partially enlarged view illustrating a state in which a secondary lever and a tertiary lever are arranged on the same line and a coupler formed in the tertiary lever is coupled to a coupling clip formed in the secondary lever in the wiper blade for a vehicle according to the present invention;

fig. 14 is a view illustrating a tertiary lever in a wiper blade for a vehicle according to the present invention, in which (a) is a front view illustrating a state viewed from the front, and (b) is a side view illustrating a state viewed from the side; and

fig. 15 is a view illustrating a left cover and a frame holder in a wiper blade for a vehicle according to the present invention, in which (a) is a perspective view illustrating a state in which the left cover and the frame holder are separated from each other, and (b) is a perspective view illustrating a state in which the left cover and the frame holder are coupled to each other.

Detailed Description

Hereinafter, a wiper blade for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings. For reference, the terms and words used in the present disclosure and claims of the present invention should not be construed as limited to lexical meanings, but should be understood as an appropriate concept that an inventor can describe his/her invention in a best way to others based on his/her ability to define terms. In addition, the embodiments and the drawings described in the present invention are only the most preferred embodiments and do not represent the entire technical spirit of the present invention, and it will be understood that various modifications and equivalents may be made to the embodiments at the time of filing this application.

Fig. 2 is a front view illustrating a wiper blade for a vehicle according to the present invention, and fig. 3 is an exploded perspective view illustrating components of the wiper blade for a vehicle shown in fig. 2.

As shown in fig. 2 and 3, a wiper blade 100 for a vehicle according to the present invention includes an adaptor 1, an adaptor holder 2, a frame holder 3, left and right primary bars 10, left and right secondary bars 20, four tertiary bars 30, a bar joint 40, a wiper blade 50, and a cover 60.

The adapter 1 is mounted on the wiper arm, the adapter holder 2 is configured to receive and hold the adapter 1, and the frame holder 3 is coupled to the adapter holder 2 such that the adapter holder 2 and the adapter 1 held in the adapter holder 2 are exposed upward.

The frame holder 3 has a coupling protrusion 3a formed on a lower surface of the frame holder 3 to be inserted into a coupling hole 12a formed in one end 12 of each of primary levers 10, which will be described later, and fastening grooves 3b formed on both ends of the frame holder 3, and the fastening protrusion 62 formed on the cover 60 is fastened to the fastening groove 3b of the frame holder 3.

Further, the wiper blade 50 is made of a rubber material, and is assembled to eight wiper blade claw brackets 34 formed at both ends of each of the four tertiary bars 30, which will be described later, in such a manner as to be inserted in a horizontal direction.

Further, it is preferable that the left and right primary bars 10 and the left and right secondary bars 20, which will be described below, are made of elastic leaf springs of a metal material, respectively, and the four tertiary bars 30 are made of elastic engineering plastic.

Fig. 4 is a perspective view illustrating a state in which a left primary lever in the wiper blade for a vehicle according to the present invention is coupled to a frame holder, fig. 5 is a perspective view illustrating a state in which a right primary lever in the wiper blade for a vehicle according to the present invention is separated from the frame holder, and fig. 6 is a cross-sectional view taken along a line a-a in fig. 3.

Left and right primary bars 10 are provided on left and right side ends of the frame holder 3, respectively, such that respective ends 12 facing each other are detachably coupled to the left and right side ends of the frame holder 3.

Specifically, as shown in fig. 4 and 5, the left and right primary bars 10 respectively have a coupling hole 12a formed at one end 12 thereof in a vertically penetrating manner, and the frame holder 3 has a coupling protrusion 3a formed on a lower surface thereof in a hook shape corresponding to the coupling hole 12 a.

At this time, as shown in fig. 6, the left and right primary bars 10 may have a cross section formed in an arc shape, and in another configuration, the left and right primary bars 10 may have a cross section bent in an inverted V shape.

Fig. 7 is a perspective view illustrating a state where a left primary lever and a left secondary lever are coupled by a lever joint in a wiper blade for a vehicle according to the present invention, fig. 8 is an exploded perspective view of the lever shown in fig. 7, and fig. 9 is a cross-sectional view taken along a line B-B in fig. 3.

As shown in fig. 7, the left and right secondary levers 20 are connected to the other end portions 14 of the left and right primary levers 10, respectively, through two lever joints 40.

As shown in fig. 8, such a rod joint 40 includes: an upper joint 42, the upper joint 42 being provided on the other end 14 of each of the left and right primary levers 10; and a lower joint 44, the lower joint 44 being disposed below each of the left and right secondary bars 20.

Further, the left and right primary bars 10 have first through holes 14a formed in the other end portions 14 thereof in a vertically penetrating manner, and the left and right secondary bars 20 have second through holes 24 formed in the central portions thereof in a vertically penetrating manner. The lower joint 44 has an insertion protrusion 44a formed on the lower joint 44 to pass through the first through hole 14a, and the upper joint 42 has an insertion groove 42a formed in the upper joint 42 corresponding to the insertion protrusion 44 a. Similarly, the lower joint 44 may have an insertion groove formed in the lower joint 44, and the upper joint 42 may have an insertion protrusion formed on the upper joint 42.

At this time, as shown in fig. 9, the left and right secondary bars 20 may have a cross section formed in an arc shape, or may have a cross section bent in an inverted V shape.

As shown in fig. 8, the left and right portions of each of the left and right secondary bars 20 are symmetrically formed based on the second through hole 24 in terms of length, inclination angle, and the like.

Fig. 10 is a perspective view illustrating a tertiary lever in the wiper blade for a vehicle according to the present invention.

The wiper blade has four tertiary bars 30, each of the four tertiary bars 30 is fitted into four coupling clips 22 formed at both ends of each of the left and right secondary bars 20, and each of the four tertiary bars 30 has a coupler 32 formed thereon in a protruding manner as shown in fig. 10.

The coupling 32 may include: a coupling portion 32a formed on the coupling 32 in such a manner as to protrude upward from the upper end portion of the tertiary bar 30; a latch portion 32b, the latch portion 32b being formed on the coupler 32 in such a manner as to extend upward from an upper side of the coupling portion 32a and having a larger diameter than the coupling portion 32a to prevent the left and right secondary levers 20 from being disengaged upward.

As described above, the coupling clips 22 are formed at both end portions of each of the left and right secondary bars 20, and the couplers 32 protrude from the upper end portion of the tertiary bar 30 to be fitted into the coupling clips 22, respectively. Therefore, the wiper blade of the present invention has advantages of reducing the number of parts to reduce manufacturing costs and improving productivity by facilitating assembly thereof.

Fig. 11 is a perspective view and a partially enlarged view illustrating a state in which a secondary lever and a tertiary lever are arranged to be orthogonal to each other in a wiper blade for a vehicle according to the present invention, fig. 12 is a perspective view and a partially enlarged view illustrating a state in which a coupler formed in a tertiary lever is coupled with a coupling clip formed in a secondary lever and the tertiary lever are arranged to be orthogonal to each other in the wiper blade for a vehicle according to the present invention, fig. 13 is a perspective view and a partially enlarged view illustrating a state in which a secondary lever and a tertiary lever are arranged on the same line and a coupler formed in the tertiary lever is coupled to a coupling clip formed in the secondary lever in the wiper blade according to the present invention, and figure 14 is a view illustrating a triple lever in a wiper blade for a vehicle according to the present invention, wherein (a) is a front view illustrating a state viewed from the front, and (b) is a side view illustrating a state viewed from the side.

The coupling clips 22 respectively formed at both ends of the left and right secondary bars 20 include guide portions 22a and clip holes 22 b.

The guide portion 22a has two branch sections extending outward from both ends of the left and right secondary bars 20 by a predetermined length in the longitudinal direction of the secondary bars 20, and is formed in a shape in which the width between the branch sections increases outward from both ends of the secondary bars 20.

Further, the clip hole 22b is formed between the branch sections of the guide portion 22a adjacent to both ends of the secondary lever 20, while one side thereof is opened toward the guide portion 22a to define an opening in a shape in which the diameter thereof is reduced outward from both ends of the secondary lever 20, so that the coupler 32 guided by the guide portion 22a is inserted and fixed.

As shown in fig. 11, when the left and right secondary bars 20 and the tertiary bar 30 are arranged to be orthogonal to each other, the coupling portion 32a is formed such that the diameter D1 in the longitudinal direction of the tertiary bar 30 is smaller than the diameter of the clip hole 22b as shown in fig. 14(a), and the guide portion 22a is fitted into the clip hole 22b through the guide portion 22 a.

In addition, as shown in fig. 12, in a state where the coupling portion 32a is fitted into the clip hole 22b, when the left and right secondary bars 20 or the tertiary bar 30 is rotated to arrange the left and right secondary bars 20 and the tertiary bar 30 on the same line as shown in fig. 13, the coupling portion 32a is formed to have a diameter D2 larger than the diameter of the clip hole 22b in the width direction of the tertiary bar 30, that is, a width between branch sections of the guide portion 22a corresponding to the opening of the clip hole 22b as shown in fig. 14 (b). Thereby, the coupling portion 32a can be prevented from being separated from the clip hole 22 b.

Fig. 15 is a view illustrating a left cover and a frame holder in a wiper blade for a vehicle according to the present invention, in which (a) is a perspective view illustrating a state in which the left cover and the frame holder are separated from each other, and (b) is a perspective view illustrating a state in which the left cover and the frame holder are coupled to each other.

The cover 60 is configured to receive and protect the primary lever 10, the secondary lever 20, and the tertiary lever 30. The wiper blade of the present invention has a pair of covers coupled to both end portions of the frame holder 3, respectively.

For this, a fastening protrusion 62 is formed on an inner surface of one end of the cover 60, and fastening grooves 3b are formed in outer surfaces of both ends of the frame holder 3 at positions corresponding to the fastening protrusion 62.

The present invention described above is not limited to the configurations described above and illustrated in the drawings, and those skilled in the art will appreciate that various substitutions, modifications, and changes may be made without departing from the technical spirit of the present invention.

[ description of reference numerals ]

1: adapter

2: adapter holder

3: frame holder

10: left side first grade pole and right side first grade pole

20: left secondary rod and right secondary rod

30: three-stage rod

32: coupling device

40: rod joint

50: doctor blade

60: cover

100: wiper for vehicle