JPH0715465U - Wiper device - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to be suitable for high-speed driving. [Structure] A cover 7 is interposed between a blade rubber 2, a vertibuler 3, a secondary lever 5, a yoke 6, and a holder 9 and a primary lever 4. As a result, the height L2 of the cover 7 that covers the holder 9 attached to the secondary lever 5 is smaller than the height L1 of the cover 7 that covers the primary lever 4 as in the conventional wiper device. For this reason, the area of the wiper blade that receives the wind pressure when the vehicle is running becomes small, which is suitable for high speed running.
Moreover, since a part of the blade rubber 2, the vertibra 3, the secondary lever 5 yoke 6 and the holder 9 are covered with the cover 7, it is possible to prevent snow, ice, etc. from adhering to the wiper blade.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiper device for cold regions or winter, which is configured to prevent adhesion of snow, ice, etc., to a wiper blade, and more particularly to a wiper device suitable for high speed running.

[0002]

[Prior art]

 A conventional wiper device for cold regions or winter will be described below with reference to FIGS. 6 to 9. This example describes a wiper device for an automobile windshield. In the figure, reference numeral 1 is a windshield of an automobile as a wiping surface (hereinafter, simply referred to as a glass surface). This glass surface 1 forms a cubic curved surface. In the figure, 2 is a blade rubber for wiping the glass surface 1. The blade rubber 2 is made of rubber, for example, and has a wiping portion 20 having a substantially inverted triangular shape on one end side (lower end side) for wiping the glass surface 1 and a substantially trapezoidal holding shape on the other end side (upper end side). It comprises a part 21 and an intermediate neck part 22 integrally provided between the lower surface of the holding part 21 and the upper surface of the wiping part 20.

In the figure, 3 is a vertibra 3 that holds the blade rubber 2. This vertiver 3 has an inner shape that is slightly larger than the outer shape of the holding portion 21 of the blade rubber 2, and has a notch 30 having a width slightly larger than the width of the neck portion 22 of the blade rubber 2 on the lower surface thereof. It will be provided. The vertibra 3 is loosely fitted and fitted onto the holding portion 21 of the blade rubber 2, and the neck portion 22 of the blade rubber 2 is loosely fitted and inserted into the notch 30 of the vertibra 3. In this way, the blade rubber 2 is held by the vertibra 3.

In the figure, 4 is a primary lever. The primary lever 4 includes a top plate portion and left and right side plate portions, which are formed by bending a thin steel plate, for example. The clip mechanism 40 is fixed to the central upper surface plate portion of the primary lever 4. The clip mechanism 40 includes a clip plate (clip base) 42 fixed to the primary lever 4 by a rivet 41 substantially orthogonal to the glass surface 1, and a rivet 43 substantially parallel to the glass surface 1 on the clip plate 42. The clip body 44 is rotatably attached.

In the figure, 5 is a secondary lever. The secondary lever 5 includes a top plate portion and left and right side plate portions, for example, formed by bending a thin steel plate. An engaging claw 50 is provided at one end of the secondary lever 5 (the end that is the outer side when attached to the primary lever 4). Nearly the center of the two secondary levers 5 are rotatably attached to both ends of the primary lever 4 by rivets 51 that are substantially parallel to the glass surface 1.

In the figure, 6 is a yoke. The yoke 6 is made up of a top plate and left and right side plates by bending a thin steel plate, for example. Engaging claws 60 are provided on both ends of the yoke 6, respectively. The rivets 61, which are substantially parallel to the glass surface 1, are attached to the other ends of the two secondary levers 5 (the ends that are inside when attached to the primary lever 4) at approximately the center of the two yokes 6, respectively. Mount so that it can rotate.

The engaging claws 50 of the secondary lever 5 and the engaging claws 60 of the yoke 6 are formed so that the lower ends of the left and right side surface plate portions of the secondary lever 5 and the left and right side surface plate portions of the yoke 6 are substantially inward. Bend it in. The gaps 52 and 62 between the engaging claws 50 and 60 on the left and right sides are made slightly larger than the width of the neck portion 22 of the blade rubber 2. The engaging claws 50 of the secondary lever 5 and the engaging claws 60 of the yoke 6 are loosely fitted onto the above-mentioned vertibra 3, and the gap 52 of the engaging claws 50 of the secondary lever 5 and the engaging claws 60 of the yoke 6 are fitted. The neck portion 22 of the blade rubber 2 is loosely fitted and inserted into the gap 62. In this manner, the engaging claws 50 at the outer end of the secondary lever 5 and the engaging claws 60 at both ends of the yoke 6 are engaged with the blade rubber 2 and the vertibler 3, respectively.

The secondary lever 5 and the yoke 6 form a connecting member that connects the primary lever 4 to the blade rubber 2 and the vertibra 3. Further, the blade rubber 2, the vertibuler 3, the primary lever 4, the secondary lever 5 and the yoke 6 constitute a wiper blade. The wiper blade may include a cover 7 described later.

In the figure, 7 is a cover made of, for example, an elastic member (rubber). The cover 7 has a substantially B-shape that is externally fitted to the holding portion 21 of the blade rubber 2 and has a notch in the center of the lower surface portion, and an extending from the outer fitting portion 70. A narrow portion 71 interposed between the neck portion 22 of the blade rubber 2, the notch 30 of the vertibra 3, the gap 52 of the secondary lever 5 and the gap 62 of the yoke 6, and the narrow portion 71 to the primary lever 71. 4 and the secondary lever 5, and a cover 72 for covering the yoke 6 from the outside. The outer fitting portion 70 of the cover 7 is fitted onto the holding portion 21 of the blade rubber 2, and the narrow portion 71 of the cover 7 is fitted to the neck portion 22 of the blade rubber 2, the notch 30 of the vertibra 3, and the above. It is interposed between the gap 52 of the secondary lever 5 and the gap 62 of the yoke 6, and the cover portion 72 of the cover covers the primary lever 4, the secondary lever 5, and the yoke 6 from the outside. When the cover portion 72 of the cover 7 is covered with the primary lever 4, the clip mechanism 40 is fixed to the primary lever 4 with the rivet 41 via the cover portion 72 of the cover 7.

In the figure, 8 is a drive unit of the wiper device. The drive unit 8 is connected to a drive shaft of a wiper motor (not shown) and extends in a direction substantially orthogonal to the glass surface 1 and an arm head attached to the wiper shaft 80. 81, the wiper arm 83 rotatably attached to the arm head 81 by a hinge pin 82 substantially orthogonal to the wiper shaft 80, and the wiper arm 83 and the arm head 81. And an elastic member (not shown) for constantly pressing the wiper arm 83 toward the glass surface 1 side. The tip of the drive side wiper arm 83 is detachably attached to the clip mechanism 40 of the primary lever 4 of the wiper blade.

Thus, by driving the wiper motor of the drive unit 8, the wiper blade performs high-speed reciprocating motion, low-speed reciprocating motion, and intermittent reciprocating motion in the directions of arrow D and arrow E in FIG. Then, the wiping unit 20 of the blade rubber 2 wipes the glass surface 1. On the other hand, the cover 7 covers a part of the blade rubber 2 (holding portion 20 and neck portion 21), the vertibra 3, the primary lever 4, the secondary lever 5 and the yoke 6, so that they are protected from snow and frost. It can prevent the adhesion. Thus, this wiper device is suitable for wiping the glass surface 1 in cold regions or winter. In the above wiper device, when the wiper blade is housed (when the drive of the wiper device is stopped), the wiper blade faces downward in the direction of arrow E.

[0012]

[Problems to be solved by the device]

 In the above-mentioned wiper device, when the wiper device is operated while the vehicle is running, the wind pressure when the vehicle is running is received by the entire wiper blade, particularly the cover 7 that covers the primary lever 4. However, the above-mentioned conventional wiper device prevents snow and frost from adhering to a part of the blade rubber 2 (holding portion 20 and neck portion 21), the vertibra 3, the primary lever 4, the secondary lever 5 and the yoke 6. , They are covered with the cover 7. For this reason, as shown in FIG. 8, the height L1 from the glass surface 1 to the top of the cover 7 covering the primary lever 4 is large, and the area of the wiper blade that receives the wind pressure during traveling of the automobile is large. Become. As a result, there is a problem that the force in the direction in which the wiping portion 20 of the blade rubber 2 separates from the glass surface 1 acts on the above-mentioned wiper blade, and the wiping efficiency of the glass surface 1 decreases. Moreover, the problem becomes more prominent as the vehicle travels at higher speeds.

An object of the present invention is a wiper device for cold regions or winter which is configured to prevent snow, ice, etc. from adhering to the wiper blade, and is particularly suitable for high speed running. To provide.

[0014]

[Means for Solving the Problems]

 According to the present invention, a connecting member is attached to a blade rubber and a vertibra, a holder is attached to the connecting member, a cover is provided on the holder, the connecting member, the vertibra, and a part of the blade rubber, and the cover is interposed between A primary lever is attached to the holder.

[0015]

[Action]

 In the present invention, since the cover is interposed between the blade rubber, the vertibler, the connecting member and the holder and the primary lever, the height of the cover covering the holder attached to the connecting member (from the wiping surface to the top of the cover). The height is smaller than the height of the cover that covers the primary lever like the conventional wiper device (the height from the wiping surface to the top of the cover). As a result, the area of the wiper blade that receives the wind pressure when the vehicle is running becomes smaller, and the force that acts on the blade rubber wiping part in the direction away from the wiping surface becomes smaller, and the wiping efficiency of the wiping surface decreases. It can be prevented and is suitable for high speed driving. Moreover, since a part of the blade rubber, the vertibler, the connecting member and the holder are covered with the cover, it is possible to prevent snow, ice or the like from adhering to the wiper blade.

[0016]

【Example】

 An embodiment of the wiper device of the present invention will be described below with reference to FIGS. Hatching is omitted in the drawing. This example describes a wiper device for an automobile windshield. In the figure, the same symbols as those in FIGS. 6 to 9 indicate the same components.

In the figure, 9 is a holder. The holder 9 includes an upper surface plate portion and left and right side surface plate portions. Through holes 90 and 91 are provided in the upper surface plate portion and the left and right side surface plate portions of the holder 9, respectively.

On the other hand, through holes 45 are provided in the upper surface plate portions at both ends of the primary lever 4. Further, through holes 53 are provided in the left and right side plate portions at the center of the secondary lever 5. Further, a through hole 73 is provided on the upper surface of the cover 72 of the cover 7.

Thus, the holder 9 is fitted onto the central portion of the secondary lever 5, and the through holes 91 of the left and right side plate portions of the holder 9 are aligned with the through holes 53 of the left and right side plate portions of the secondary lever 5. A rivet 51, which is substantially parallel to the glass surface 1, is inserted into the through holes 53 and 91, and the rivet 51 is rotatably attached. The holder 9, the secondary lever 5, the yoke 6, the vertibra 3 and the blade rubber 2 are assembled into the cover 7, and the primary lever 4 is set on the cover 7, and the primary lever 4 The through hole 45, the through hole 73 of the cover 7 and the through hole 90 of the upper plate portion of the holder 9 are aligned with each other, and the pop rivet 92 which is substantially perpendicular to the glass surface 1 is inserted into the through holes 45, 73 and 90. Then, the pop rivet 92 fixes the primary lever 4, the cover 7 and the holder 9, and the cover 9 is interposed between the primary lever 4, the secondary lever 5 and the yoke 6. That is, the cover 7 covers the secondary lever 5, the yoke 6, the vertibra 3, and a part of the blade rubber 2 (the holding portion 21 and the neck portion 22) to expose the primary lever 4 to the exposed state.

In the wiper device of the present invention in this embodiment, a plurality of substantially rectangular through holes 47, for example, seven holes are provided in the upper plate portion of the primary lever 4. The through hole 47 does not necessarily have to be provided. 1 side of the primary lever 4, that is, the side plate portion on the side where the wiper blade faces downward when the wiper blade is stored (when the drive of the wiper device is stopped), the primary lever The length of the part excluding both ends and the center part of 4 should be slightly longer than the length of the other side plate parts as shown by the chain double-dashed lines in FIGS. 4 (A), (B) and (C). In addition, the long side plate is tilted so that a force for pressing the wiper blade against the glass surface 1 is applied by the wind pressure during traveling.

In the wiper device of the present invention in this embodiment, a cover 7 is interposed between the primary lever 4, the secondary lever 5 and the yoke 6. That is, the cover 7 covers a part of the secondary lever 5, the yoke 6, the vertibuler 3 and the blade rubber 2 (the holding portion 21 and the neck portion 22) so that the primary lever 4 is exposed. As shown in FIG. 5 (A), the height (height from the glass surface 1 to the top of the cover 7) L2 of the cover 2 that covers the holder 9 attached to the secondary lever 5 is as shown in FIG. The height is smaller than the height (height from the glass surface 1 to the top of the cover 7) L 1 of the cover 7 that covers the primary lever 4 such as the wiper device. As a result, the area of the wiper blade that receives the wind pressure when the vehicle is running becomes small, and the force exerted by the wiping portion 20 of the blade rubber 2 in the direction away from the glass surface 1 is correspondingly small, and the wiping of the glass surface 1 is reduced. It can prevent the efficiency from decreasing and is suitable for high speed driving. Moreover, since part of the blade rubber 2, the vertibra 3, the secondary lever 5, the yoke 6 and the holder 9 are covered with the cover 7, it is possible to prevent snow, ice, etc. from adhering to the wiper blade.

On the other hand, in the wiper device of the present invention in this embodiment, the cover 7 covers the secondary lever 5, the yoke 6, the vertibra 3 and a part of the blade rubber 2 (the holding portion 21 and the neck portion 22), and the primary lever. Since 4 is exposed, there is a gap between the primary lever 4 and the cover 7, and the wind during running goes through the gap described above, and as a result, the force of the wiper blade to move away from the glass surface 1. Can be prevented, which is suitable for high-speed running, and the wiping efficiency of the wiper blade can be improved.

Further, in the above-mentioned embodiment, since the through hole 47 is provided in the upper surface plate portion of the primary lever 4, the wind that has entered between the primary lever 4 and the cover 7 has the above through hole 47. The wiper blade can be prevented from coming off the glass surface 1, and the wiping efficiency of the wiper blade can be improved.

Further, in the above embodiment, the length of the portion of the primary lever 4 excluding both ends and the central portion on the E side in FIG. 1 is slightly longer as shown by the chain double-dashed line in FIG. The long side plate of the comb can be tilted so that the force of pressing the windshield wiper blade against the glass surface 1 is acted upon by the wind pressure during traveling, which makes it more suitable for high-speed traveling. The wiping efficiency can be improved.

In the above-described embodiment, the yokes 6 are attached to both ends of the secondary lever 5, respectively. However, as in the above-described conventional example, the yoke 6 is attached to the other end of the secondary lever 5. May be attached.

[0026]

[Effect of device]

 As is clear from the above, the wiper device of the present invention is suitable for high speed running.

[Brief description of drawings]

FIG. 1 is a perspective view of a wiper blade showing an embodiment of the wiper device of the present invention.

FIG. 2 is an exploded perspective view of a primary lever, a cover, a holder, a secondary lever, and a yoke.

FIG. 3 is likewise an enlarged exploded perspective view of a main part.

4 (A), (B), and (C) are AA in FIG.
A line sectional view, a BB line sectional view, and a CC line sectional view,
It is sectional drawing corresponding to the AA line cross section in FIG. 6, a BB line cross section, and a CC line cross section, respectively.

5A is an explanatory view showing a height of a cover of a wiper device of the present invention, and FIG. 5B is an explanatory view showing a height of a cover of a conventional wiper device.

FIG. 6 is a side view showing a conventional wiper device with a cover removed from a wiper blade.

FIG. 7 is a perspective view of a wiper blade of a conventional wiper device with a cover attached.

FIG. 8 is a cross-sectional view taken along the line AA in FIG. 7, showing a state where wind resistance is received when the wiper is operating in the direction of arrow D.

9 (A), (B) and (C), the wiper has an arrow D.
6 is a sectional view taken along the line AA in FIG. 7, a sectional view taken along the line BB, and a sectional view taken along the line CC of FIG.
It is sectional drawing corresponding to each of the AA line cross section, BB line cross section, and CC line cross section in FIG.

[Explanation of symbols]

1 ... Glass surface (wiping surface), 2 ... Blade rubber, 3 ... Vertibra, 4 ... Primary lever, 5 ... Secondary lever, 6 ... Yoke, 7 ... Cover, 8 ... Wiper drive part, 9 ... Holder.

Claims (1)

[Scope of utility model registration request] 1. A blade rubber for wiping a wiping surface, a vertibra for holding the blade rubber, a connecting member attached to the blade rubber and the vertibra, a holder attached to the connecting member, the holder and the connection. A wiper device comprising: a cover that covers a part of the member, the vertibler, and the blade rubber; and a primary lever attached to the holder via the cover.