JP6773836B2 - Primary lever and wiper blade - Google Patents

Description

The present invention relates to a primary lever and a wiper blade using the primary lever.

Generally, the wiper arm is an arm head fixed to the vehicle, an arm piece capable of holding a wiper blade for wiping the windshield, a retainer connected to the arm piece, and this retainer as the arm head. It is equipped with a bearing device for pivotally mounting. The arm head is provided with a bolt hole at one end thereof so that it can be fixed to the vehicle body through a bolt, and a hinge portion is provided at the other end on the opposite side.

The wiper blade includes a blade rubber assembly for wiping the windshield and a lever assembly for attaching the blade rubber assembly to the arm piece so that it can be held. The lever assembly is composed of a plurality of lever members such as a primary lever, a secondary lever, and a yoke.

In recent years, wiper blades (so-called design blades) whose appearance has been improved by covering the lever member with a resin cover member have been used (see, for example, Patent Document 1).

The wiper blade proposed in Patent Document 1 includes a primary lever and a secondary lever as a lever assembly that constitutes a support portion that supports the blade rubber assembly. Further, the wiper blade includes a center cover portion and a side cover portion as cover members for covering these lever assemblies.

On the other hand, in order to reduce the number of parts, reduce the cost, and improve the appearance, the primary lever is made of a material for a cover member (for example, resin), and the secondary lever, yoke, etc. are omitted, and this primary lever is omitted. A wiper blade that constitutes a lever assembly from only the lever has been proposed. This wiper blade has a structure in which the blade rubber assembly is supported only by the primary lever.

9 and 10 show the configuration of such a wiper blade 50. In FIGS. 9 and 10, an accommodating portion 56 for accommodating the clip 54 is provided at substantially the center of the primary lever 52. The clip 54 is rotatably supported on one side in the accommodating portion 56 by a clip support shaft 58 provided in the accommodating portion 56.

Then, the clip 54 can be connected to the arm piece (not shown) by rotating the clip 54 in a direction in which it partially protrudes from the accommodating portion 56. Further, the primary lever 52 is provided with a holder 60 for closing a space formed in a portion adjacent to the clip 54 when the arm piece is connected to the clip 54.

The primary lever 52 shown in FIGS. 9 and 10 is set exclusively for the right handle and the left handle, respectively. At this time, the length of the accommodating portion 56 along the longitudinal direction of the primary lever 52 is determined in consideration that the clip 54 and the holder 60 can be attached only in one direction corresponding to the right handle and the left handle. Will be done. Hereinafter, the length of the accommodating portion along the longitudinal direction of the primary lever is referred to as the size of the accommodating portion.

Also, in recent years, in order to standardize parts and reduce costs, the size of the accommodating part has been increased so that the clip can be attached in different directions so that it can be placed in the accommodating part for right and left handles. It has been proposed to share the primary lever of.

FIG. 11 shows the configuration of such a wiper blade 50. In FIG. 11, the accommodating portion 56 provided on the primary lever 52 has a larger size than the accommodating portion 56 shown in FIG. Further, the accommodating portion 56 has a shape symmetrical with respect to the clip support shaft 58 on which the clip 54 is supported. As a result, the clip 54 can be attached in one direction or the opposite direction, and one primary lever 52 can be used for both the left and right handles.

Patent No. 4227052

In the primary lever 52 of the wiper blade 50 as shown in FIGS. 9 and 10, if the size of the accommodating portion 56 becomes large, there is a problem that it becomes difficult to secure the strength of the primary lever 52.

The present invention has been made to solve the above-mentioned problems, and provides a primary lever capable of ensuring strength even when the size of the accommodating portion is increased.

The present invention can be realized, for example, as the following aspects.
According to the first aspect, the primary lever includes an accommodating portion for accommodating a clip that can be attached to the arm piece of the wiper arm, and a reinforcing means provided in the accommodating portion, and the primary lever is for a cover member. The containment is defined by the inner walls of the first to fourth side walls, the clip is rotatably supported by the primary lever within the containment, and the reinforcing means is of the clip. It extends from the inner wall of one of the first to fourth side walls to the inner wall of the other side of the first to fourth side walls at a position that does not interfere with rotation. A primary lever is provided.

According to the second aspect, the primary lever of the first aspect includes a first opening formed on the side opposite to the arm piece side of the accommodating portion, and the reinforcing means is at least a part of the first opening. It has a first reinforcing member formed so as to cover the above.

According to the third aspect, the primary lever of the second aspect includes a clip support shaft that rotatably supports the clip in the accommodating portion, and the first reinforcing member faces the clip support shaft of the first opening. At the position, it is formed across the first opening in the width direction of the primary lever.

According to the fourth aspect, in the primary lever of the second aspect or the third aspect, the auxiliary extending from the inner wall portion of one side wall of the first to fourth side walls toward the first reinforcing member. It is equipped with a reinforcing member.

According to the fifth aspect, in any of the primary levers from the second aspect to the fourth aspect, the first reinforcing member is formed across the first opening in the width direction of the primary lever, and the first aspect is formed. The reinforcing member is joined to the inner wall portion of the side wall so that a step is formed between the reinforcing member and the inner wall portion of the side wall.

According to the sixth aspect, in any of the primary levers of the first to fifth aspects, the reinforcing means is axially extending between the inner wall portions of the two side walls facing each other in the width direction of the primary lever. It has a second reinforcing member.

According to the seventh aspect, the primary lever of the sixth aspect includes a holder rotatably supported by the primary lever in the accommodating portion, and the second reinforcing member is a holder support shaft that supports the holder.

According to the eighth aspect, in the primary lever of the seventh aspect, the holder support shafts are formed on one end side and the other end side in the longitudinal direction of the accommodating portion, respectively.

According to the ninth aspect, in any of the primary levers from the first aspect to the sixth aspect, the second opening formed on the arm piece side of the accommodating portion and at least a part of the second opening are formed. A holder that can be opened and closed and is rotatably supported by a primary lever in the accommodating portion, and the accommodating portion includes a clip accommodating portion that can accommodate a clip and a clip non-accommodating portion adjacent to the clip accommodating portion. The clip accommodating portion and the clip non-accommodating portion are arranged along the longitudinal direction of the primary lever and communicate with the second opening, and the holder is a clip of the second opening. It moves between the closed position where the portion on the non-accommodating portion is closed and the open position where the portion on the clip non-accommodating portion is opened in the second opening.

According to the tenth aspect, in the primary lever of the ninth aspect, the clip can be turned and placed in the clip non-container, and when the clip is placed in the clip non-container, the holder , The second opening is moved between the closed position where the portion on the clip accommodating portion is closed and the open position where the portion on the clip accommodating portion is opened in the second opening.

According to the eleventh aspect, in the primary lever of the ninth aspect or the tenth aspect, the clip and the holder are arranged side by side in the accommodating portion.

According to the twelfth aspect, in any of the primary levers from the first aspect to the eleventh aspect, the material for the cover member is made of resin.

According to the thirteenth aspect, a wiper blade including any of the primary levers from the first aspect to the twelfth aspect and a blade rubber assembly mounted on the primary lever is provided.

According to the present invention, in a primary lever made of a material for a cover member, the inner wall of one of the first to fourth side walls defining the accommodating portion at a position that does not interfere with the rotation of the clip. Reinforcing means extending from the portion toward the inner wall portion of the other side wall of the first to fourth side walls is provided. As a result, the strength of the primary lever can be ensured even when the size of the accommodating portion is increased.

It is a perspective view which shows a part of the wiper blade which concerns on one Embodiment of this invention. It is a top view which shows a part of the wiper blade which concerns on one Embodiment of this invention. It is sectional drawing which shows a part of the wiper blade which concerns on one Embodiment of this invention. It is a perspective view which saw a part of the wiper blade shown in FIG. 2 from the back side. It is an enlarged perspective view of a part of the wiper blade shown in FIG. It is an enlarged plan view of a part of the wiper blade shown in FIG. It is an enlarged cross-sectional perspective view of a part of the wiper blade shown in FIG. It is an enlarged perspective view of a part of the wiper blade shown in FIG. It is a perspective view which shows a part of the wiper blade which concerns on the prior art. It is a top view which shows a part of the wiper blade which concerns on the prior art. It is a top view which shows a part of the wiper blade which concerns on the prior art.

Hereinafter, preferred embodiments of the primary lever according to the present invention will be described with reference to FIGS. 1 to 8, but the same or corresponding portions in each of the drawings will be described with the same reference numerals.

The wiper blade 10 is equipped with a blade rubber assembly (not shown) for wiping the wiped surface (for example, the windshield of an automobile) and the blade rubber assembly, and the blade rubber assembly is attached to the arm piece of the wiper arm (FIG.). (Not shown) is provided with a primary lever 12 as a lever assembly for holding and mounting.

The lever assembly is composed of a primary lever 12. That is, in order to reduce the number of parts and reduce the cost, the wiper blade 10 is not provided with a secondary lever, a yoke, or the like, and the lever assembly is configured only from the primary lever 12. The primary lever 12 is formed of a material (for example, resin) used for the cover member in order to improve its appearance.

A housing portion 16 for accommodating a clip 14 that can be attached to the arm piece of the wiper arm is provided at a substantially central portion of the primary lever 12. The clip 14 is rotatably supported in the accommodating portion 16 by a clip support shaft 18 (see FIG. 2) provided in the accommodating portion 16. The clip 14 is formed separately from the primary lever 12, and is a connecting member for connecting the wiper blade 10 to the wiper arm (not shown).

The primary lever 12 has an opening 20 (second opening) on the side of the accommodating portion 16 on which the arm piece is arranged (see FIG. 3). More specifically, the accommodating portion 16 has an opening 20 above in FIG. Further, the primary lever 12 has a holder 22 capable of opening and closing at least a part of the opening 20. The holder 22 is rotatably supported in the housing portion 16 by a holder support shaft 24 (see FIG. 2) provided in the housing portion 16. The clip 14 and the holder 22 are arranged side by side in the accommodating portion 16 along the longitudinal direction of the primary lever 12.

The accommodating portion 16 has a clip accommodating portion 26 in which the clip 14 is accommodated, and a clip non-accommodating portion 28 sunk in the clip accommodating portion 26 (see FIG. 2). The clip accommodating portion 26 and the clip non accommodating portion 28 are arranged along the longitudinal direction of the primary lever 12 and communicate with the opening 20. The holder 22 moves between a closed position in the opening 20 that closes the portion on the clip non-accommodating portion 28 and an open position in the opening 20 that opens the portion on the clip non-accommodating portion 28.

In the present embodiment, the clip 14 can be rotatably attached to the other side of the accommodating portion 16 by reversing the direction of the clip 14, whereby one primary lever 12 can be used for both the left and right handles. It is possible. That is, the clip 14 can be arranged in the clip non-accommodating portion 28 by changing its direction.

At this time, the holder 22 is rotatably supported in the housing portion 16 by the holder support shaft 30 (see FIG. 2) provided in the housing portion 16. The holder support shaft 24 and the holder support shaft 30 are formed on one end side and the other end side in the longitudinal direction of the accommodating portion 16, respectively. At this time, the holder 22 moves between the closed position of the opening 20 for closing the portion on the clip accommodating portion 26 and the open position of the opening 20 for opening the portion on the clip accommodating portion 26. To do.

The primary lever 12 is formed from a top plate 12a as a long lever body, a first side wall 12b formed by bending from one end of the top plate 12a in the width direction, and the other end of the top plate 12a in the width direction. It has a second side wall 12c formed by bending. Further, a third side wall 12d extends between one side of the first side wall 12b and one side of the second side wall 12c (see FIG. 2). A fourth side wall 12e extends between the other side of the first side wall 12b and the other side of the second side wall 12c (see FIG. 2). The accommodating portion 16 is defined by the inner wall portions of the first side wall 12b, the second side wall 12c, the third side wall 12d and the fourth side wall 12e.

The portion of the first side wall 12b and the portion of the second side wall 12c that define the accommodating portion 16 extend from the top plate 12a substantially in parallel, but the portion of the second side wall 12c that defines the accommodating portion 16 The portion of the second side wall 12c other than the portion is more gently inclined from the top plate 12a than the first side wall 12b.
Then, regardless of whether the primary lever 12 is used for the right-hand drive or the left-hand drive, the second side wall 12c having a gently inclined surface is always placed downward on the windshield. , The primary lever 12 is arranged. As a result, during traveling, downforce acts on the second side wall 12c having an inclined surface, and the wiping work becomes good.

The primary lever 12 has an opening 32 (first opening) on the side of the accommodating portion 16 opposite to the side on which the arm piece is arranged (see FIG. 3). More specifically, the accommodating portion 16 has an opening 32 at the lower side in FIG. Further, the primary lever 12 is a plate-shaped bridging member extending across the opening 32 in the width direction of the primary lever 12 from the inner wall portion of the first side wall 12b toward the inner wall portion of the second side wall 12c. It has 34 (first reinforcing member) (see FIG. 4).

The bridging member 34 is provided at a position facing the clip support shaft 18 of the opening 32 and at a position that does not hinder the rotation of the clip 14. By providing the bridging member 34, the stress applied to the clip support shaft 18 can be dispersed to the bridging member 34, and the strength of the primary lever 12 can be improved. That is, even when the size of the accommodating portion 16 is increased, the strength of the primary lever 12 is not reinforced by the clip support shaft 18 with metal parts or the like, or the side wall defining the accommodating portion 16 is thickened. Can be secured.

The primary lever 12 includes a bridging member 36 (auxiliary reinforcing member) extending from the third side wall 12d toward the bridging member 34, and a bridging member 38 (auxiliary) extending from the fourth side wall 12e toward the bridging member 34. It has a reinforcing member) (see FIG. 4). By providing the bridging member 36 and the bridging member 38, the strength of the primary lever 12 can be further improved. Only one of the bridging member 36 and the bridging member 38 may be provided, or may not be provided if sufficient strength can be secured only by the bridging member 34.

The bridging member is not limited to the above-mentioned one. The bridging member is located at a position that does not interfere with the rotation of the clip 14, and is from the inner wall portion of one of the first side wall 12b to the fourth side wall 12e to the first side wall 12b to the fourth side wall 12e. It may be provided anywhere as long as it extends toward the other inner wall of the house and is formed so as to cover at least a part of the opening 32. By providing the bridging member, the same effect as reducing the size of the accommodating portion 16 can be obtained. Therefore, the strength of the primary lever 12 can be ensured without thickening the side wall defining the accommodating portion 16. it can.

Further, the bridging member 34 is joined to the second side wall 12c so that a step 40 is formed between the bridging member 34 and the second side wall 12c (see FIG. 4). As described above, the primary lever 12 is arranged such that the second side wall 12c is always down on the windshield. As a result, the air that has entered the accommodating portion 16 from the second side wall 12c side can be easily discharged from the first side wall 12b side during traveling, and the lifting of the wiper blade can be suppressed.

The holder support shaft 24 and the holder support shaft 30 described above are axial members extending between the inner wall portion of the first side wall 12b and the inner wall portion of the second side wall 12c facing each other of the primary lever 12. The holder 22 can be rotatably supported in the accommodating portion 16. Further, the holder support shaft 24 and the holder support shaft 30 are provided at positions that do not interfere with the rotation of the clip 14 (see FIG. 8).

Conventionally, a dowel has been used as a member for supporting the holder 22, but since the dowel does not contribute to the strength of the primary lever 12, when the size of the accommodating portion 16 is increased, the strength of the primary lever 12 can be secured. It will be difficult. Therefore, instead of the dowel, a holder support shaft 24 and a holder support shaft 30 which are axial members extending between the inner wall portion of the first side wall 12b and the inner wall portion of the second side wall 12c are provided. Can be used as the second reinforcing member.

By providing the holder support shaft 24 and the holder support shaft 30, the same effect as reducing the size of the accommodating portion 16 can be obtained, and the strength of the primary lever 12 can be improved. That is, even when the size of the accommodating portion 16 is increased, the strength of the primary lever 12 can be ensured without thickening the side wall defining the accommodating portion 16. In addition, at a position other than the holder support shaft 24 and the holder support shaft 30, and at a position that does not hinder the rotation of the clip 14, it extends between the inner wall portion of the first side wall 12b and the inner wall portion of the second side wall 12c. Another existing shaft-shaped member may be provided. Further, the member is not limited to the shaft-shaped member, and a member having another shape may be provided.

According to the primary lever 12, an accommodating portion 16 accommodating a clip 14 that can be attached to the arm piece of the wiper arm, a bridging member 34 as a reinforcing means provided in the accommodating portion 16, a holder support shaft 24, and a holder support. It has a shaft 30 and. Further, the primary lever 12 is made of a material for a cover member, the accommodating portion 16 is defined by the inner wall portions of the side walls 12b to 12e from the first to the fourth, and the clip 14 is inside the accommodating portion 16. It is rotatably supported by the primary lever 12, and the reinforcing means is rotatably supported from the inner wall portion of one of the side walls 12b to 12e of the first to fourth side walls 12b to 12e at a position that does not interfere with the rotation of the clip 14. It extends toward the inner wall portion of the other side wall of the side walls 12b to 12e from the first to the fourth side wall. Therefore, the strength of the primary lever 12 can be ensured even when the size of the accommodating portion 16 is increased.

Although only some embodiments of the present invention have been described above, it is possible to make various changes or improvements to the illustrated embodiments without substantially departing from the novel teachings and advantages of the present invention. Will be easily understood by those skilled in the art. Therefore, it is intended that such modified or improved forms are also included in the technical scope of the present invention. Further, the above embodiments may be arbitrarily combined.

10 ... Wiper blade 12 ... Primary lever 12a ... Top plate 12b ... First side wall 12c ... Second side wall 12d ... Third side wall 12e ... Fourth side wall 14 ... Clip 16 ... Accommodating part 18 ... Clip support shaft 20 ... Opening (second opening)
22 ... Holder 24 ... Holder support shaft (second reinforcing member)
26 ... Clip accommodating portion 28 ... Clip non-accommodating portion 30 ... Holder support shaft 32 ... Opening (first opening)
34 ... Bridging member (first reinforcing member)
36 ... Bridging member (auxiliary reinforcing member)
38 ... Bridging member (auxiliary reinforcing member)
40 ... Step 50 ... Wiper blade 52 ... Primary lever 54 ... Clip 56 ... Accommodating part 58 ... Clip support shaft 60 ... Holder

Claims (13)

It ’s the primary lever,
A housing unit that houses a clip that can be attached to the arm piece of the wiper arm,
Reinforcing means provided in the accommodating portion and
A first opening formed on the side of the accommodating portion opposite to the arm piece side is provided.
The primary lever is made of a material for a cover member.
The accommodating portion is defined by the inner wall portions of the first to fourth side walls.
The clip is rotatably supported by the primary lever within the housing.
The reinforcing means is provided from the inner wall portion of one side wall of the first to fourth side walls to the other of the first to fourth side walls at a position that does not interfere with the rotation of the clip. extend toward the inner wall portion of the side wall,
The reinforcing means is a primary lever having a first reinforcing member formed so as to cover at least a part of the first opening . The primary lever according to claim 1 .
A clip support shaft that rotatably supports the clip in the accommodating portion is provided.
The first reinforcing member is a primary lever formed across the first opening in the width direction of the primary lever at a position facing the clip support shaft of the first opening. The primary lever according to claim 1 or 2 .
A primary lever provided with an auxiliary reinforcing member extending from an inner wall portion of one of the first to fourth side walls toward the first reinforcing member. The primary lever according to any one of claims 1 to 3 .
The first reinforcing member is formed across the first opening in the width direction of the primary lever.
The first reinforcing member is a primary lever joined to the inner wall portion of the side wall so as to form a step with the inner wall portion of the side wall. The primary lever according to any one of claims 1 to 4 .
The reinforcing means is a primary lever having a second axial reinforcing member extending between the inner wall portions of two side walls facing each other in the width direction of the primary lever. It ’s the primary lever,
A housing unit that houses a clip that can be attached to the arm piece of the wiper arm,
A reinforcing means provided in the accommodating portion is provided.
The primary lever is made of a material for a cover member.
The accommodating portion is defined by the inner wall portions of the first to fourth side walls.
The clip is rotatably supported by the primary lever within the housing.
The reinforcing means is provided from the inner wall portion of one side wall of the first to fourth side walls to the other of the first to fourth side walls at a position that does not interfere with the rotation of the clip. extend toward the inner wall portion of the side wall,
The reinforcing means is a primary lever having a second axial reinforcing member extending between the inner wall portions of two side walls facing each other in the width direction of the primary lever. The primary lever according to claim 5 or 6 .
A holder rotatably supported by the primary lever in the housing.
The second reinforcing member is a primary lever which is a holder support shaft for supporting the holder. The primary lever according to claim 7.
The holder support shaft is a primary lever formed on one end side and the other end side in the longitudinal direction of the accommodating portion, respectively. The primary lever according to any one of claims 1 to 6.
A second opening formed on the arm piece side of the accommodating portion and
A holder that can open and close at least a part of the second opening and is rotatably supported by the primary lever in the housing portion.
The accommodating portion has a clip accommodating portion capable of accommodating the clip and a clip non-accommodating portion adjacent to the clip accommodating portion, and the clip accommodating portion and the clip non-accommodating portion are the longitudinal lengths of the primary lever. It is arranged along the direction and communicates with the second opening.
The holder has a closed position of closing the portion of the second opening on the clip non-container portion and an open position of opening the portion of the second opening on the clip non-accommodation portion. The primary lever that moves between. The primary lever according to claim 9.
The clip can be reoriented and placed in the clip non-container as well.
When the clip is placed in the clip non-accommodating portion, the holder is in a closed position of the second opening for closing the portion on the clip accommodating portion and in the second opening. A primary lever that moves between the opening position and the opening position on the clip housing. The primary lever according to claim 9 or 10.
A primary lever in which the clip and the holder are arranged side by side in the accommodating portion. The primary lever according to any one of claims 1 to 11.
The material for the cover member is a primary lever made of resin. The primary lever according to any one of claims 1 to 12,
A wiper blade provided with a blade rubber assembly mounted on the primary lever.

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