KR101534773B1 - Blade apparatus for a vehicle - Google Patents

Abstract

The present invention relates to a wiper blade apparatus for a vehicle capable of improving durability and suppressing noise by improving a combination structure between an auxiliary lever consisting of a synthetic resin, and a yoke member consisting of a metallic material. According to the present invention, the wiper blade apparatus for a vehicle comprises: a main lever having an arm combination hole wherein a wiper arm is combined with a center in the form of a rod, consisting of a synthetic resin; an auxiliary lever combined with an end of the main lever in the form of a rod consisting of a synthetic resin; and a yoke member combined to be rotated within a certain angle range with respect to the auxiliary lever, and to support a wiper strip. Furthermore, the wiper blade apparatus for a vehicle comprises a spacer member to mediate in combination with the yoke member to be rotated within a certain angle range with respect to the auxiliary lever. The spacer member is fixated to the auxiliary lever, the yoke member is combined with the spacer member to be rotated, and the yoke member is not directly in contact with the auxiliary lever.

Description

[0001] Blade apparatus for a vehicle [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wiper blade device for wiping off foreign matters on the front or rear glass of a vehicle.

Generally, the wiper assembly performs repetitive reciprocating motion by driving the link device connected to the vehicle body by the wiper arm, thereby removing foreign matters from the front glass or the rear glass of the vehicle.

The wiper assembly is an essential component for the safe operation of an automobile.

In a conventional wiper structure, a pair of support members made of a metal material is coupled to a wiper strip made of rubber, the support member is supported by a plurality of yoke members, and the yoke members are connected to each other by a plurality of auxiliary levers.

However, the conventional wiper is rotatably coupled to the coupling between the yoke member and the auxiliary lever and the coupling between the auxiliary levers using a pin or a rivet. A spacer or the like having a small coefficient of friction is coupled to the coupling portion, have. Therefore, the number of components constituting one wiper is as many as 20 and as many as 15 pieces. In addition, since the conventional wiper uses the main lever and the auxiliary lever made of a metal material, the wiper has a heavy weight. Such a wiper having a large number of components and a heavy weight gives a load to the wiper arm as well as the window of the vehicle when mounted on the vehicle, resulting in a failure and adversely affecting the reliability. Therefore, it was required to develop a wiper which is light and has excellent assemblability. An example of a wiper blade device developed to achieve this object is disclosed in Korean Utility Model Registration No. 0449008.

Such a wiper blade apparatus includes a structure in which the main lever and the auxiliary lever made of synthetic resin are combined by their own shape. A yoke member is coupled to the auxiliary lever to uniformly support the wiper strip. However, there arises a problem that noise is generated at the coupling portion between the auxiliary lever and the yoke member. In addition, there is a problem that the rigidity of the coupling portion between the auxiliary lever and the yoke member is relatively low, resulting in poor durability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicular wiper blade apparatus which is capable of suppressing noise and significantly improving durability by improving a coupling structure of a yoke member made of a metal material and an auxiliary lever made of a synthetic resin, .

According to an aspect of the present invention, there is provided a vehicular wiper blade apparatus including a main lever having a female coupling hole through which a wiper arm is coupled to a central portion of a rod,

A bar-shaped auxiliary lever coupled to an end of the main lever and made of synthetic resin; And

And a yoke member rotatably coupled to the auxiliary lever within a predetermined angle range and supporting the wiper strip,

And a spacer member for mediating the yoke member with respect to the auxiliary lever so as to be rotatably engaged in a predetermined angle range,

Wherein the spacer member is fixed to the auxiliary lever,

The yoke member is rotatably coupled to the spacer member, and the yoke member is not in direct contact with the auxiliary lever.

Wherein the spacer member has a rail portion slidingly engaged with the auxiliary lever,

Preferably, the auxiliary lever includes a guide groove portion for fixing the rail portion.

A protruding engagement portion protruding from an outer wall of the spacer member; And

And a release preventing jig provided on an inner surface of the auxiliary lever and configured to prevent the rail portion from being detached from the guide groove portion by engaging with the protruding engaging portion.

A pair of coupling holes formed to penetrate both sides of the yoke member; And

And a coupling protrusion protruding from the inner wall of the spacer member toward the coupling hole and rotatably received in the coupling hole.

It is preferable that the free end of the engaging projection has a tapered structure.

The length of the coupling protrusion is preferably larger than the thickness of the side wall of the yoke member.

And a flow preventive rail formed on the inner side wall of the spacer member and protruding from the inner wall of the spacer member toward the outer wall of the yoke member to contact and support the outer wall of the yoke member.

The wiper blade apparatus for a vehicle according to the present invention is characterized in that the spacer member is firmly fixed to the auxiliary lever and the yoke member forms a structure rotatably coupled only to the spacer member so that the relative rotation of the auxiliary lever and the yoke member Since the spacer member is not rigidly fixed to the auxiliary lever and does not flow, the durability of the yoke member can be sufficiently ensured even if the yoke member is rotated repeatedly with respect to the auxiliary lever, There is an effect to provide.

1 is a schematic perspective view of a vehicle wiper blade apparatus according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the vehicle wiper blade apparatus shown in FIG. 1. FIG.
3 is a sectional view taken along the line III-III shown in Fig.
4 is a sectional view taken along the line IV-IV shown in Fig.
5 is a sectional view taken along the line V-V shown in Fig.
6 is an enlarged view of the spacer member shown in Fig.
FIG. 7 is a view of the spacer member shown in FIG. 6 viewed from another direction. FIG.
FIG. 8 is a view showing a state in which a yoke member and a spacer member are combined in the vehicle wiper blade apparatus shown in FIG. 1. FIG.
FIG. 9 is a three-dimensional view showing a state in which a yoke member is coupled to an auxiliary lever via a spacer member in the vehicle wiper blade apparatus shown in FIG. 1. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic perspective view of a vehicle wiper blade apparatus according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the vehicle wiper blade apparatus shown in FIG. 1. FIG. 3 is a sectional view taken along the line III-III shown in Fig. 4 is a sectional view taken along the line IV-IV shown in Fig. 5 is a sectional view taken along the line V-V shown in Fig. 6 is an enlarged view of the spacer member shown in Fig. FIG. 7 is a view of the spacer member shown in FIG. 6 viewed from another direction. FIG. FIG. 8 is a view showing a state in which a yoke member and a spacer member are combined in the vehicle wiper blade apparatus shown in FIG. 1. FIG. FIG. 9 is a three-dimensional view showing a state in which a yoke member is coupled to an auxiliary lever via a spacer member in the vehicle wiper blade apparatus shown in FIG. 1. FIG.

1 to 9, a vehicle wiper blade apparatus 10 according to a preferred embodiment of the present invention includes a main lever 20, an auxiliary lever 30, a yoke member 40, a wiper strip 50, And a spacer member (60).

The main lever 20 is a bar-shaped member. The main lever 20 is made of a synthetic resin material. The main lever 20 is provided at its center with an arm coupling hole 21 for coupling a wiper arm (not shown).

The auxiliary lever 30 is coupled to the end of the main lever 20. A plurality of auxiliary levers 30 may be provided. In the present embodiment, two auxiliary levers 30 are provided. The auxiliary levers 30 are coupled to both ends of the main lever 20, respectively. The auxiliary lever 30 is a rod-like member made of a synthetic resin. The auxiliary lever 30 is made of synthetic resin. The coupling structure of the main lever 20 and the auxiliary lever 30 may employ a well-known structure, and thus a detailed description thereof will be omitted.

The auxiliary lever 30 is engaged with a yoke member 40 described later. The auxiliary lever 30 is provided with a structure for fixing a spacer member 60 to be described later. More specifically, the auxiliary lever 30 includes a guide groove portion 32 and a separation preventing jaw 34.

The guide groove 32 is a groove formed on both sides of the inner circumferential surface of the auxiliary lever 30. The guide groove portion 32 is a portion where a spacer member 60 described later is slidingly coupled. More specifically, the guide groove portion 32 fixes the rail portion 62 provided on the spacer member 60.

The separation preventing jaw 34 is provided on the outer wall of the spacer member 60. The separation preventing jaw 34 may be spaced apart from the guide groove 32. The release bust 34 is engaged with a protruding engagement portion 64 provided in a spacer member 60 to be described later so that a rail 62 provided in the spacer member 60 is separated from the guide groove 32 .

The yoke member (40) is rotatably coupled to the auxiliary lever (30). The yoke member 40 is disposed so as to be rotatable with respect to the auxiliary lever 30 within a predetermined angle range. The yoke member 40 partially supports the wiper strip 50 to be described later. The yoke member (40) has a pair of coupling holes (42). The coupling holes 42 are formed to penetrate both side walls of the yoke member 40. The engaging hole 42 is a circular hole. The engaging hole 42 engages with the engaging projection 66 provided in the spacer member 60 to be described later.

The wiper strip 50 is a member that sweeps away the foreign substances adhering to the glass of the vehicle and directly removes the foreign matter. The wiper strip 50 may be made of a material such as rubber having good flexibility. The wiper strip (50) has a yoke member (40) via a long belt-shaped support member (52). May be coupled to the auxiliary lever (30).

The spacer member 60 is a component that plays a key role of the present invention. The spacer member (60) is fixed to the auxiliary lever (30). The spacer member 60 is rotatably coupled to the yoke member 40. More specifically, the spacer member (60) mediates the yoke member (40) to be rotatably engaged with the auxiliary lever (30) within a certain angle range. Therefore, due to the spacer member 60, the yoke member 40 is rotatably installed on the auxiliary lever 30 without contacting the auxiliary lever 30 directly.

The spacer member 60 includes a rail portion 62, a projecting portion 64, an engaging projection 66, and a flow preventing rail portion 68.

And the rail portion 62 is slidably engaged with the auxiliary lever 30. [ The rail portion 62 is formed on the outer wall of the spacer member 60. More specifically, the rail portion 62 is slidably engaged with the guide groove portion 32 formed in the auxiliary lever 30. The spacer member 60 may be elastically deformed while the rail portion 62 is coupled to the auxiliary lever 30. The spacer member 60 is made of a synthetic resin material. The spacer member 60 may be made of a material such as polyacetal resin (POM, polyacetal or polyoxymethylene).

The protruding engaging portion 64 is protruded from the outer wall of the spacer member 60. The protruding latching portion 64 engages with the release preventing jaw 34 provided on the auxiliary lever 30 to prevent the rail portion 62 from being detached from the guide groove portion 32.

The coupling protrusions 66 are formed to protrude from the inner wall of the spacer member 60 toward the coupling holes 42 provided in the yoke member 40. The engaging projection 66 is rotatably received in the engaging hole 42. [ The outer circumferential surface of the engaging projection 66 is in surface contact with the inner circumferential surface of the engaging hole 42. The free end of the engaging projection 66 may have a tapered structure. The tapered shape of the coupling protrusion 66 may be formed in a direction in which the spacer member 60 is assembled with or separated from the yoke member 40. The length of the coupling protrusion 66 is preferably larger than the thickness of the side wall of the yoke member 40. The reason why the length of the engaging projection 66 is larger than the thickness of the side wall of the yoke member 40 is that the spacer member 60 is prevented from being unexpectedly separated from the yoke member 40.

The flow preventing rail portion 68 is formed on the inner wall of the spacer member 60. The flow preventive rail portion 68 protrudes from the inner wall of the spacer member 60 toward the outer wall of the yoke member 40. The flow restricting rail portion 68 contacts and supports the outer wall of the yoke member 40 in a pressed state. A plurality of the flow-restricting rail portions 68 may be provided. The flow preventing rail portion 68 prevents the flow of the yoke member 40 in the width direction when the yoke member 40 and the spacer member 60 are engaged with each other.

Hereinafter, the operation and effect of the vehicle wiper blade apparatus 10 including the above-described structure will be described with reference to a process in which the auxiliary lever 30 and the yoke member 40 are coupled via the spacer member 60 Will be described in detail.

2, the wiper strip 50 is coupled to the auxiliary lever 30 via the yoke member 40 and the support member 52. [ The coupling process of the auxiliary lever 30 and the yoke member 40, which implement the essential operational effects of the present invention, will be described in detail.

And the spacer member (60) is coupled to the yoke member (40). The engaging projections 66 provided on the spacer member 60 and the engaging holes 42 provided on the yoke member 40 are engaged with each other to couple the spacer member 60 to the yoke member 40. [ do. And the spacer member 60 is coupled to the yoke member 40 like a cap. In this process, the spacer member 60 elastically deforms naturally. The sidewall of the spacer member 60 is coupled to the yoke member 40 while being widened by elastic deformation. The spacer member 60 is resiliently restored while the engaging projection 66 is engaged with the engaging hole 42. The flow preventive rail portion 68 contacts the outer wall of the yoke member 40 so that the spacer member 60 is engaged with the yoke member 40 in a state where the spacer member 60 is engaged with the yoke member 40. [ 40 in the width direction. The yoke member 40 rotates the engaging projection 66 with a rotation axis within a range of a predetermined angle with respect to the spacer member 60 in a state where the spacer member 60 and the yoke member 40 are engaged .

Now, a process of coupling the spacer member 60 to the auxiliary lever 30 will be described.

The spacer member 60 and the guide groove portion 32 provided on the auxiliary lever 30 may be coupled to each other to couple the spacer member 60 to the auxiliary lever 30, do. The auxiliary lever 30 is elastically deformed naturally during the sliding of the rail portion 62 into the guide groove portion 32. The protruding engaging portion 64 is caught by the release preventing jaw 34 at a point of time when the rail portion 62 is slidably engaged along the guide groove portion 32. The spacer member 60 is firmly fixed to the auxiliary lever 30 by engaging the protruding latching portion 64 with the separation preventing jaw 34. [ The spacer member 60 is firmly fixed to the auxiliary lever 30 so that it can not flow in the longitudinal direction of the auxiliary lever 30 as well as the height direction of the auxiliary lever 30. Also, since the spacer member 60 is interposed between the inner side walls of the auxiliary lever 30, the spacer member 60 can not move in the width direction of the auxiliary lever 30. Accordingly, the spacer member 60 forms a structure integrated with the auxiliary lever 30 like a part of the auxiliary lever 30. [

The spacer member 60 may be equally applied to a portion where the yoke member 40 and the main lever 20 are coupled.

As described above, the vehicle wiper blade apparatus according to the present invention can achieve the object of the present invention by the spacer member being firmly coupled to the auxiliary lever, and the yoke member being rotatably coupled to the coupling protrusion of the spacer member. That is, in the vehicle wiper blade apparatus according to the present invention, the spacer member is firmly fixed to the auxiliary lever, and the yoke member forms a structure rotatably engaged only with the spacer member, so that the relative rotation of the auxiliary lever and the yoke member Since the spacer member is rigidly fixed to the auxiliary lever and does not flow, the durability is sufficiently ensured even when the yoke member is rotated repeatedly with respect to the auxiliary lever, so that the vehicle wiper blade There is an effect of providing a device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications can be made by those skilled in the art within the technical scope of the present invention. Is obvious.

.10: Vehicle wiper blade unit
20: Main lever
21: female coupling ball
30: Auxiliary lever
32: guide groove
34:
40: yoke member
42: Combination ball
50: Wiper strip
52: Support member
60: spacer member
62: Le Mans
64:
66: engaging projection
68: Anti-flow restrainer

Claims (7)

A main lever having a female coupling hole to which a wiper arm is coupled at a central portion of the rod shape and made of synthetic resin;
A bar-shaped auxiliary lever coupled to an end of the main lever and made of synthetic resin; And
And a yoke member rotatably coupled to the auxiliary lever within a predetermined angle range and supporting the wiper strip,
And a spacer member for mediating the yoke member with respect to the auxiliary lever so as to be rotatably engaged in a predetermined angle range,
Wherein the spacer member is fixed to the auxiliary lever,
The yoke member is rotatably coupled to the spacer member, the yoke member is configured not to directly contact the auxiliary lever,
A pair of coupling holes formed to penetrate both sides of the yoke member; And
And an engaging protrusion protruding from the inner side wall of the spacer member toward the engaging hole and rotatably received in the engaging hole. The method according to claim 1,
Wherein the spacer member has a rail portion slidingly engaged with the auxiliary lever,
Wherein the auxiliary lever has a guide groove portion for fixing the rail portion. 3. The method of claim 2,
A protruding engagement portion protruding from an outer wall of the spacer member; And
And a separation preventing jig provided on the inner side surface of the auxiliary lever and configured to prevent the rail portion from being separated from the guide groove due to the engagement of the projecting engagement portion. delete The method according to claim 1,
Wherein the free end of the coupling protrusion has a tapered structure. The method according to claim 1,
Wherein a length of the coupling protrusion is larger than a thickness of a side wall of the yoke member. The method according to claim 1,
And a flow preventive rail formed on an inner wall of the spacer member and protruding from an inner wall of the spacer member toward an outer wall of the yoke member to contact and support an outer wall of the yoke member.

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