KR100937206B1 - Wiper assembly for automobile - Google Patents

Abstract

PURPOSE: A vehicle wiper assembly is provided to save manufacturing cost and to improve wiping performance and durability when a vehicle is driving at a high speed. CONSTITUTION: A vehicle wiper assembly comprises a wiper strip(20), a supporting member(25), a first yoke member(30), a second yoke member(32), a first auxiliary lever(40), a second subsidiary lever(42) and a main lever(60). The wiper strip is arranged in order to slide and to contact to a windscreen of a vehicle. The supporting member is combined with the wiper strip and extends in the longitudinal direction of the wiper strip. The first yoke member makes the supporting member slide on both end parts. The second yoke member is arranged in order to be separated from the first yoke member. The second yoke member has one end connected to the middle of the second yoke member to rotate. The first auxiliary lever is connected to one end of the main lever to rotate.

Description

Wiper assembly for automobile

The present invention relates to a wiper assembly installed on the front or rear glass of a vehicle to remove foreign matters on the glass, and a wiper assembly having an improved structure to realize stable wiping performance at high speeds of the vehicle.

In general, the wiper assembly removes foreign substances on the front glass or the rear glass of the vehicle by repeatedly reciprocating by driving the motor driving the link device connected to the vehicle body by the wiper arm.

The wiper assembly is an essential piece of equipment for safe driving of a vehicle.

1 to 3 show a view of a conventional wiper assembly. The wiper assembly shown in FIG. 1 is generally called a tournament type wiper assembly and is the oldest type of wiper assembly. The wiper assembly shown in FIG. 1 has a wiper strip coupled to a linear support member such that a plurality of tournament levers bend the wiper strip to follow the curvature of the glass of the vehicle. Such a tournament-type wiper assembly is excellent in durability because the plurality of tournament levers form a stable support point, and has a good wiping performance because it well follows the curvature of the glass. However, the tournament-type wiper assembly has a problem in that the wiping ability is deteriorated due to the rise of the wiper assembly due to the pressure of air acting on the glass surface during the high speed driving of the vehicle. In order to solve this problem, a spoiler member is additionally attached on the tournament lever. However, since the spoiler member to be attached additionally must be manufactured and assembled separately, manufacturing cost of the component increases, the appearance is not beautiful, and the weight of the component increases.

The wiper assembly shown in FIG. 2 is called a flat blade and is developed to maintain a stable wiping performance at high speeds of a vehicle. Recently, as the driving conditions of automobile roads have improved, the case of high-speed driving of automobiles has increased. Therefore, maintaining a stable wiping performance at high speeds has become a major concern. The flat blade shown in FIG. 2 differs from the tournament type wiper assembly shown in FIG. In other words, the flat blade is a combination of the wiper strip and the spoiler in a single beam structure having a spring characteristic. The beam is made to be characterized according to the curvature of the automotive glass. The spoiler is made of a polymer material that is harder than the wiper strip. Flat blades have the advantage of showing stable wiping performance at high speeds, but have a poor ability to follow the curvature of automobile glass. Therefore, if the curvature of the automotive glass is different, there is a need to newly develop a product that matches the curvature of the glass. In addition, the flat blade has a problem that the durability is lower than the wiper assembly of the tournament form. In addition, since the flat blade is made of rubber or plastic, there is a risk of breakage during operation.

The wiper assembly shown in FIG. 3 is called a uni blade as a supplement to the shortcomings of the wiper assembly shown in FIGS. 1 and 2. The uni-blade has two tournament-type levers installed only in the middle portion of a tournament-type wiper strip, and the tournament-type levers are configured to be relatively engaged with a spoiler cover. However, the wiper assembly illustrated in FIG. 3 has a disadvantage in that it is difficult to follow the curvature of the glass because both ends of the wiper strip are not properly supported. In addition, since the cover is made of a plastic material, there is a problem in that brittleness is increased in winter, and is damaged by an external impact such as snow.

Disclosure of Invention An object of the present invention is to provide a wiper assembly for an automobile, which has been devised to solve such a problem, has low manufacturing cost, good wiping performance at high speed, excellent durability, and good tracking of curvature of glass. have.

In order to achieve the above object, the vehicle wiper assembly according to the present invention, the wiper strip is arranged to be in sliding contact with the glass of the vehicle to remove the foreign matter on the glass surface;

A plurality of support members coupled to the wiper strips and disposed to extend in the longitudinal direction of the wiper strips and having spring elasticity;

First yoke members slidably supporting the support member at both ends;

A second yoke member disposed to be spaced apart from the first yoke member and slidably supporting the support member at both ends;

A first auxiliary lever having one end coupled to the middle portion of the first yoke member so as to be relatively rotatable, and the other end slidably supporting one end of the support member;

A second auxiliary lever having one end coupled to the intermediate portion of the second yoke member so as to be relatively rotatable, and the other end slidably supporting the other end of the support member; And

A main lever having one end coupled to the first subsidiary lever so as to be relatively rotatable, and the other end coupled to the second subsidiary lever so as to be relatively rotatable, and having a wiper arm coupled to the center thereof; Including;

The main lever, the first subsidiary lever, and the second subsidiary lever are each manufactured by pressing a metal material, and air flowing to the vehicle glass side during the wiping operation includes the main lever, the first subsidiary device, and the first subsidiary lever. And a spoiler unit for inducing a flow of air to press the lever and the second subsidiary lever in a direction closer to the glass.

Preferably, a bearing member for reducing friction during relative rotation is installed at the connection portion between the main lever and the first auxiliary lever and the connection portion between the main lever and the second auxiliary lever.

A coupling hole penetrating the inner circumferential surface and the outer circumferential surface of the main lever is formed at the longitudinal center of the main lever, and a connecting shaft is installed to traverse the coupling hole in the width direction.

The connecting device,

A frame coupled to the coupling hole to reinforce the widthwise rigidity of the main lever at the coupling hole portion; And

A clip member rotatably coupled to the connecting shaft; It is preferable to include.

A cover fitted to the frame so as to reinforce the empty space of the frame and fixed relative to the frame, the cover being disposed so that the wiper arm which is engaged with the clip member and rotates integrally with the clip member is not separated from the frame. Do.

The cover preferably includes a plurality of weight reducing grooves formed concave in the width direction.

The frame is provided with two locking jaws,

Preferably, the locking jaw is locked to the main lever to prevent the frame from being separated from the main lever.

The frame has a fixing hole formed in a direction parallel to the connecting shaft, the cover is preferably provided with a fixing pin coupled to the fixing hole.

The frame is disposed in a direction parallel to the connecting shaft and has a protruding pin protruding inward from the side wall portion of the coupling hole,

The cover is preferably provided with a receiving groove for elastically receiving the protruding pin.

A first rotating shaft rotatably coupling the main lever and the first auxiliary lever; And

A second rotary shaft is rotatably coupled to the main lever and the second auxiliary lever,

The uppermost point of the cross section formed when the imaginary plane including the first axis of rotation and perpendicularly intersecting the longitudinal direction of the main lever crosses the main lever is referred to as P1,

When the uppermost point of the cross section formed when the imaginary plane including the second rotating shaft and perpendicularly intersecting the longitudinal direction of the main lever intersects the main lever is P2,

The connecting shaft is preferably disposed at a position not higher than a straight line connecting P1 and P2.

The present invention adopts an integrated main lever, a first auxiliary lever and a second auxiliary lever with a spoiler part made of a metal material, and thus is low in manufacturing cost, good wiping performance at high speed, excellent durability, and curvature of glass. There is an effect of providing a wiper assembly of a vehicle that follows well. In addition, one end of the first auxiliary lever and the second auxiliary lever slidably supports the wiper strip, thereby providing an effect of better following the curvature of the glass of the vehicle.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a schematic perspective view of a wiper assembly according to a preferred embodiment of the present invention. 5 is a schematic exploded perspective view of the wiper assembly shown in FIG. 4. FIG. 6 is a cross-sectional view taken along the line VI-VI shown in FIG. 4. FIG. 7 is a partial cutaway sectional view taken along the line VIII-VIII shown in FIG. 4. 8 is a top view of the wiper assembly shown in FIG. 4. FIG. 9 is a cross-sectional view taken along the line VII-VII of FIG. 8. FIG. 10 is a cross-sectional view taken along the line VII-VII of FIG. 8. FIG. 11 is a front view of the wiper assembly shown in FIG. 4.

4 to 11, an automobile wiper assembly 10 (hereinafter referred to as “wiper assembly”) according to a preferred embodiment of the present invention includes a wiper strip 20, a support member 25, and a first yoke member. 30, the second yoke member 32, the first auxiliary lever 40, the second auxiliary lever 42, the main lever 60, and the connecting device 200 are included.

The wiper strip 20 is a component that is disposed to be in sliding contact with the glass of the vehicle to remove foreign substances on the glass surface. The wiper strip 20 is generally made of a rubber material. The wiper strip 20 has grooves (not shown) on both sides for engaging with the support member 25 described later. Since the wiper strip 20 employed in the present invention is substantially the same as the wiper strip employed in the conventional tournament type wiper assembly, detailed description thereof will be omitted.

The support member 25 is coupled to the wiper strip 20. The support member 25 is disposed long in the longitudinal direction of the wiper strip 20. The support member 25 has a spring elasticity. The support member 25 is provided in plurality. More specifically, two supporting members 25 are provided. The support member 25 is fitted to groove portions provided at both sides of the wiper strip 20 to be coupled to the wiper strip 20. The support member 25 is a component that imparts elasticity and rigidity to the wiper strip 20, which is similar to that used in a conventional tournament type wiper assembly.

The first yoke member 30 is a component for slidably supporting the support member 25. The first yoke member 30 is the same as the yoke used in the conventional tournament type wiper assembly. The first yoke member 30 supports the support member 25 at both ends. The first yoke member 30 is disposed spaced from the end of the support member 25 toward the center in the longitudinal direction of the support member 25.

The second yoke member 32 has the same structure as the first yoke member 30. The second yoke member 32 is disposed at a position spaced apart from the first yoke member 30. That is, the second yoke member 32 supports the support member 25 so as to be slidable at both ends thereof. End portions of the first yoke member 30 and the second yoke member 32 are disposed at positions spaced apart from both ends of the support member 25 by a predetermined distance. That is, the first yoke member 30 and the second yoke member 32 are disposed to support the intermediate portion without supporting both ends of the support member 25.

One end of the first auxiliary lever 40 is coupled to the intermediate portion of the first yoke member 30 to allow relative rotation. The other end of the first auxiliary lever 40 supports the one end of the support member 25 in a slidable manner. That is, the first auxiliary lever 40 partially performs the function of the first yoke member 30 or the second yoke member 32. More specifically, the first auxiliary lever 40 slidably supports one end of the support member 25 to perform the same function as the third yoke in the conventional wiper assembly wiper assembly. The first auxiliary lever 40 is manufactured by pressing a metal material such as carbon steel, for example. The first auxiliary lever 40 has a spoiler portion 45. The spoiler portion 45 is integrally formed on the upper surface of the first auxiliary lever 40. More specifically, the spoiler 45 is implemented by changing the shape of the upper surface of the first auxiliary lever 40. The spoiler portion 45 acts to induce the flow of air so that the air flowing to the vehicle glass side during the wiping operation presses the first auxiliary lever 40 in a direction closer to the vehicle glass. The first auxiliary lever 40 includes an extension portion 47 accommodated in the main lever 60 to be described later. The extension portion 47 is provided with a hole for engagement with the main lever 60, which will be described later, in the vicinity of the spoiler portion 45 adjacent thereto.

The second auxiliary lever 42 has a symmetrical structure with the first auxiliary lever 40. That is, one end of the second auxiliary lever 42 is coupled to the intermediate portion of the second yoke member 32 so that relative rotation is possible. The other end of the second auxiliary lever 42 is coupled to the support member 25 to slidably support the other end of the support member 25. Detailed structure of the second auxiliary lever 42 will be referred to the first auxiliary lever 40, and detailed description thereof will be omitted.

The main lever 60 is arranged to connect the first auxiliary lever 40 and the second auxiliary lever 42. One end of the main lever 60 is coupled to the first auxiliary lever 40 so that relative rotation is possible. The other end of the main lever 60 is coupled to the second subsidiary lever 42 to allow relative rotation. A bearing member 70 is provided at a portion where the main lever 60 is coupled to the first auxiliary lever 40 and the second auxiliary lever 42 to reduce friction between components generated during relative rotation. have. The bearing member is made of a plastic material. A central portion of the main lever 60 in the longitudinal direction is provided with a connecting device 200 to which the wiper arm 100 is coupled. The main lever 60 was manufactured by pressing a metal material. The main lever 60 is provided with a spoiler portion 65. The spoiler 65 provided in the main lever 60 is integrally formed with the main lever 60. The spoiler portion 65 provided on the main lever 60 serves to induce the flow of air so that air flowing to the vehicle glass side presses the main lever 60 in a direction closer to the glass during the wiping operation. A coupling hole 62 penetrating the inner circumferential surface and the outer circumferential surface of the main lever 60 is formed at the longitudinal center of the main lever 60. The coupling hole 62 is a hole penetrated in the vertical direction. The coupling hole 62 is formed to assemble the connection device 200 to be described later. The coupling shaft 64 is provided in the coupling hole 62. The connecting shaft 64 is disposed to penetrate both side walls of the coupling hole 62 and cross the coupling hole 62 in the width direction. The main lever 60 is coupled to the first rotation shaft 66 for rotatably coupling the main lever 60 and the first subsidiary lever 40. The main lever 60 is coupled to the second rotation shaft 68 for rotatably coupling the main lever 60 and the second auxiliary lever 42. It is assumed that the uppermost point of the cross section formed when the imaginary plane including the first rotating shaft 66 and perpendicularly intersecting the longitudinal direction of the main lever 60 intersects with the main lever 60 is P1. In addition, it is assumed that the uppermost point of the cross section formed when the imaginary plane including the second rotation shaft 68 and perpendicularly intersects the longitudinal direction of the main lever 60 intersects the main lever 60 as P2. do. The connecting shaft 64 is preferably disposed at a position not higher than a straight line connecting P1 and P2. If the connecting shaft 64 is located higher than the straight line connecting the P1 and P2, since the height of the wiper assembly is relatively high, there is a problem that noise is increased during high-speed driving and easily floated from the glass.

The connecting device 200 includes a frame 80, a clip member 90, and a cover 95.

The frame 80 is assembled to the coupling hole 62. The frame 80 is provided to reinforce the widthwise rigidity of the main lever 60 in the coupling hole 62. The frame 80 has a corresponding side wall portion 82 along a side wall of the coupling hole 62 and a flange portion 83 extending outwardly perpendicular to the side wall portion 82. Two locking jaws 84 are provided on the side wall portion 82 of the frame 80. The two locking jaws 84 are arranged at positions spaced apart from each other so as to be symmetrical to each other. The latching jaw 84 is formed in a tapered cross section so as to naturally enter when combined with the coupling hole 62. The locking jaw 84 is caught around the coupling hole 62 of the main lever 60 to prevent the frame 80 from being separated from the main lever 60. That is, the frame 80 is fixed relative to the main lever 60. A hole penetrated in the direction of the coupling hole 62 is formed inside the side wall portion of the frame 80. The side wall portion 82 of the frame 80 is provided with an evacuation groove 85. The avoidance groove 85 is formed to avoid interference with the connecting shaft 64 when the frame 80 is engaged with the coupling hole 62. The inner end of the avoidance groove 85 has a shape corresponding to the shape of the connecting shaft 64 so as to surround the connecting shaft 64. Two fixing holes 86 are formed in the side wall portion 82 of the frame 80. The fixing hole 86 is disposed in a direction parallel to the connecting shaft 64. The fixing hole 86 is provided to prevent the cover 95, which will be described later, from being separated from the frame 80. The frame 80 has a protruding pin 88. The protruding pins 88 are arranged in a direction parallel to the connecting shaft 64. The protruding pin 88 protrudes inward from the side wall portion 82 of the coupling hole 62. The protruding pin 88 is formed integrally with the side wall portion 82 of the frame 80.

The clip member 90 is a component for engaging the wiper arm 100. The clip member 90 is rotatably coupled to the connecting shaft 64. The clip member 90 is provided with a cantilever-shaped elastic fixing part 92 which is coupled to the wiper arm 100 and is elastically deformed by an external force. The wiper arm 100 is provided with a receiving hole 102 for receiving the elastic fixing portion 92. The wiper arm 100 is coupled to the clip member 90. The wiper arm 100 rotates integrally with the clip member 90. The wiper arm 100 is a component that pressurizes the wiper assembly 10 according to the present invention to pressurize the glass and rotatably connect the wiper assembly 10 to the vehicle body.

The cover 95 is coupled to a portion remaining by the clip member 90 in a space formed by the side wall portion 82 of the frame 80. The cover 95 is provided to reinforce the empty space of the frame 80. The cover 95 is fitted to the frame 80 and fixed relative to the frame 80. In addition, the cover 95 is disposed so that the wiper arm 100 which engages with the clip member 90 and rotates integrally with the clip member 90 does not detach from the frame 80. The cover 95 includes a plurality of weight reducing grooves 98 formed concave in the width direction. The weight reducing groove 98 is provided to have sufficient rigidity while reducing the weight of the cover 95. The cover 95 has a fixing pin 96 coupled to the fixing hole 86. The fixing pin 96 and the fixing hole 86 are coupled to prevent the cover 95 from being separated from the frame 80. In order to couple the fixing pin 96 with the fixing hole 86, a slight external force must be applied to cause the side wall portion 82 having the fixing hole 86 to have some elastic deformation. In addition, the cover 95 is provided with a receiving groove 97 for elastically receiving the protruding pin 88. One side of the receiving groove 97 may be opened so that the protruding pin 88 may enter, and the protruding pin 88 may be fitted into the receiving groove 97 through one side of the open receiving groove 97. do.

Hereinafter, the operation of the wiper assembly 10 of the present embodiment configured as described above will be described in detail with reference to the procedure for assembling the wiper assembly 10.

First, the order of assembling the wiper assembly 10 from the exploded perspective view shown in FIG. 5 will be described.

The first auxiliary lever 40 and the first yoke member 30 are rotatably coupled by a coupling means such as a rivet. In the same manner, the second auxiliary lever 42 and the second yoke member 32 are coupled. The main lever 60, the first subsidiary lever 40 and the bearing member 70 are rotatably coupled using a coupling means such as a pin or rivet. In the same manner, the main lever 60, the second subsidiary lever 42, and the bearing member 70 are coupled. The frame 80 is now coupled to the main lever 60. The frame 80 is engaged by the engaging jaw 84 passes through the engaging hole 62 of the main lever 60 and around the engaging hole 62. The clip member 90 is coupled to the connecting shaft 64. The cover 95 is coupled to the frame 80. The cover 95 is coupled to the fixing pin 96 and the receiving groove 97 provided in the cover 95 to the fixing hole 86 and the protruding pin 88 provided in the frame 80, respectively, the frame ( Relative to 80). The support member 25 is coupled to the wiper strip 20. In addition, the wiping strip 20 and the support member 25, the locking ring 48 provided on the second auxiliary lever 42, the locking ring 34 provided on the second yoke member 32, and The engaging ring 34 provided in the first yoke member 30 and the engaging ring 44 provided in the first auxiliary lever 40 are respectively coupled. Then, the wiper arm 100 is coupled to the clip member 90. By this process, the assembly of the wiper assembly 10 is completed. Since the assembly method described so far is one embodiment, the assembly order of the components can be changed. For example, the connecting device 200 and the main lever 60 may be assembled in advance.

The wiper assembly 10 having such a structure transmits the pressure transmitted from the wiper arm 100 to the wiper strip 20 by the first yoke member 30 and the second yoke member 32. At the same time, the first subsidiary lever 40 and the second subsidiary lever 42 support slidably both ends of the support member 25. That is, the first auxiliary lever 40 and the second auxiliary lever 42 partially perform the functions of the first yoke member 30 and the second yoke member 32. Thus, the wiper assembly 10 exhibits the same level of durability and glass curvature as conventional wiper assemblies. In addition, the spoiler parts 45, 46, and 65 formed integrally with the first auxiliary lever 40, the second auxiliary lever 42, and the main lever 60 are stable at high speeds comparable to the conventional flat blades. Enable ping performance. In addition, since the spoiler parts 45, 46, 65 are integrally formed with the first auxiliary lever 40, the second auxiliary lever, and the main lever 60, the spoiler parts 45, 46, and 65 are not only beautiful in appearance but also manufactured in cost. It is very inexpensive. In addition, since the main lever 60, the first subsidiary lever and the second subsidiary lever 42 are formed by pressing a metal material, the weight is very light and strong. Thus, the durability is excellent. In addition, the frame 80 and the cover 95 improves the widthwise rigidity of the main lever 60 to provide an effect of preventing the main lever 60 from being bent or broken by an unexpected external force. .

In the above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the technical idea of the present invention. Is obvious.

1 is a schematic perspective view of a conventional wiper assembly.

2 is a schematic perspective view of another conventional wiper assembly.

3 is a schematic exploded perspective view of another conventional wiper assembly.

4 is a schematic perspective view of a wiper assembly according to a preferred embodiment of the present invention.

5 is a schematic exploded perspective view of the wiper assembly shown in FIG. 4.

FIG. 6 is a cross-sectional view taken along the line VI-VI shown in FIG. 4.

FIG. 7 is a partial cutaway sectional view taken along the line VIII-VIII shown in FIG. 4.

8 is a top view of the wiper assembly shown in FIG. 4.

FIG. 9 is a cross-sectional view taken along the line VII-VII of FIG. 8.

FIG. 10 is a cross-sectional view taken along the line VII-VII of FIG. 8.

FIG. 11 is a front view of the wiper assembly shown in FIG. 4.

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

10: Car Wiper Assembly

20: wiper strip 25: support member

30: first yoke member 32: second yoke member

34, 44, 48: hook 40: first auxiliary lever

42: second auxiliary lever 45, 46, 65: spoiler

47: extension 60: main lever

62: coupling hole 64: connecting shaft

66: first rotating shaft 68: second rotating shaft

70: bearing member 80: frame

82 side wall portion 83 flange portion

84: engaging jaw 85: avoidance groove

86: fixing hole 88: protruding pin

90 clip member 92 elastic fixing part

95 cover 96 fixed pin

97: receiving groove 98: weight reducing groove

100: wiper arm 102: receiving hole

200: connection device

Claims (8)

A wiper strip 20 disposed in sliding contact with the glass of the vehicle to remove foreign substances from the glass surface; A plurality of support members 25 coupled to the wiper strip 20 and disposed to extend in the longitudinal direction of the wiper strip 20 and having spring elasticity; First yoke members 30 that slidably support the support members 25 at both ends; A second yoke member 32 disposed to be spaced apart from the first yoke member 30 and slidably supporting the support member 25 at both ends; A first auxiliary lever 40 having one end coupled to the middle of the first yoke member 30 so as to be relatively rotatable, and the other end slidably supporting one end of the support member 25; A second auxiliary lever 42 having one end coupled to the middle of the second yoke member 32 so that relative rotation is possible, and the other end slidably supporting the other end of the support member 25; And One end portion is coupled to the first subsidiary lever 40 and the relative rotation, the other end is coupled to the second subsidiary lever 42 and the relative rotation, the connection device 200 is coupled to the wiper arm in the center Main lever 60 is provided with; Including; The main lever 60, the first subsidiary lever 40, and the second subsidiary lever 42 are each manufactured by pressing a metal material, and air flowing to the vehicle glass side during the wiping operation Spoilers 45, 46, 65 which induce a flow of air to press the main lever 60, the first auxiliary lever 40, and the second auxiliary lever 42 in a direction closer to the glass. ), Integrally A coupling hole 62 penetrating the inner circumferential surface and the outer circumferential surface of the main lever 60 is formed at the center of the longitudinal direction of the main lever 60, and the connecting shaft 62 crosses the coupling hole 62 in the width direction ( 64) is installed, The connection device 200, It characterized in that it comprises a frame 80 coupled to the coupling hole 62 and fixed to the main lever 60 so as to reinforce the width direction rigidity of the main lever 60 in the coupling hole 62 portion. Car wiper assembly. The method of claim 1, A clip member 90 rotatably coupled to the connecting shaft 64; Automotive wiper assembly comprising a. The method of claim 2, A wiper arm which is fitted to the frame 80 to be fixed relative to the frame 80 so as to reinforce the empty space of the frame 80, and which engages with the clip member 90 and rotates integrally with the clip member 90. And a cover (95) disposed so as not to be separated from the frame (80). The method of claim 3, The cover (95) is an automobile wiper assembly, characterized in that it comprises a plurality of weight reducing grooves (98) formed concave in the width direction. The method of claim 3, The frame 80 is provided with two locking jaw 84, Automobile locking wiper assembly characterized in that the locking jaw (84) to prevent the frame 80 from being separated from the main lever (60) by engaging the main lever (60). The method of claim 5, The frame 80 has a fixing hole 86 formed in a direction parallel to the connecting shaft 64, the cover 95 has a fixing pin 96 is coupled to the fixing hole 86 Car wiper assembly, characterized in that. The method of claim 5 The frame 80 is disposed in a direction parallel to the connecting shaft 64 and has a protruding pin 88 protruding inward from the side wall portion of the coupling hole 62, The cover (95) is an automobile wiper assembly, characterized in that it has a receiving groove (97) for elastically receiving the protruding pin (88). The method of claim 1, A first rotating shaft (66) rotatably coupling the main lever (60) and the first auxiliary lever (40); And A second rotary shaft 68 is rotatably coupled to the main lever 60 and the second auxiliary lever 42. The uppermost point of the cross section formed when the imaginary plane including the first rotating shaft 66 and perpendicularly intersecting the longitudinal direction of the main lever 60 intersects with the main lever 60 is referred to as P1, If the uppermost point of the cross section formed when the virtual plane including the second rotating shaft 68 and perpendicularly intersecting the longitudinal direction of the main lever 60 intersects with the main lever 60 is P2, And said connecting shaft (64) is located at a position not higher than a straight line connecting said P1 and P2.

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