JP2001063531A - Wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper blade allowing prevention of careless release of connection of respective levers, and allowing easy and certain connection of the respective levers. SOLUTION: This wiper blade 10 comprise a primary lever 18 formed with a shaft insertion groove 26 and an engagement part 29; and a yoke lever 20 formed with a connection shaft 32 and a detachment stopper 34. Because both the levers 18, 20 can be connected by only inserting the connection shaft 32 into a shaft hole 28 of the shaft insertion groove 26 with both the levers 18, 20 disposed perpendicularly to each other, the connection work is facilitated. Because the detachment stopper 34 engages with the engagement part 29 to restrict movement of the yoke lever 20 in the longitudinal direction, careless release of the connection of both the levers 18, 20 can be prevented. Because both the levers 18, 20 cannot be relatively turned to positions where both the levers 18, 20 are parallel to each other in the case that the connection shaft 32 is not regularly inserted in the shaft hole 28, the connection can be easily confirmed to certainly connect both the levers 18, 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper blade for a vehicle wiper device for wiping a windshield glass of a vehicle.

[0002]

2. Description of the Related Art In recent years, in a wiper device for a vehicle, a wiper blade has been made of resin due to a demand for design and weight reduction, and if the structure of a conventional metal wiper blade is applied as it is, there is a problem in strength. Will occur. In particular, there is a problem in strength in connection structure of a plurality of levers (for example, a primary lever and a yoke lever) constituting the blade assembly of the wiper blade.
No. 49 discloses a wiper blade 102 (FIG. 7).
reference).

In this wiper blade 102, a lever-side mounting portion 10 is provided at both longitudinal ends of a lever 104 (primary lever) supported by a wiper arm (not shown).
6 are provided. A U-shaped and elastic flanged engaging portion 108 is formed on the lever side mounting portion 106, and a flange 110 protruding upward is formed at the tip of the flanged engaging portion 108. Also, the yoke 112 (yoke lever)
A yoke-side mounting portion 114 is provided at a central portion in the longitudinal direction of the device, and a lever supporting shaft portion 116 is bridged between side walls of the yoke-side mounting portion 114. The lever support shaft portion 116 is fitted to the flanged engagement portion 108 by elastic engagement (the lever support shaft portion 116 goes over the flange portion 110 of the flanged engagement portion 108), whereby the lever 10
4 is connected to a yoke 112. The yoke 11
The blade rubber 118 is held by the two longitudinal end portions.

In such a wiper blade 102, the strength of the yoke-side mounting portion 114 is improved by bridging the lever supporting shaft portion 116 between the side walls of the yoke-side mounting portion 114 as described above.

However, in such a wiper blade 102, as described above, the flanged engagement portion 1 of the lever 104 is used.
08, the lever support shaft 116 of the yoke 112 is simply fitted by elastic engagement.
2, the yoke 112 is connected to the lever 10
When an external force is applied so as to relatively move the lever 104 in the longitudinal direction, the lever supporting shaft 116 climbs over the flange 110 of the flanged engaging portion 108 and the connection between the lever 104 and the yoke 112 is disconnected. There is.

Further, when connecting the lever 104 and the yoke 112, the lever supporting shaft portion 116 is fitted to the flanged engaging portion 108 by elastic engagement (the flange supporting member 116 is engaged with the lever supporting shaft portion 116). It is necessary to pull the lever 104 and the yoke 112 in directions opposite to each other with a large tensile force, so that the lever 104 and the yoke 112 are firmly connected to each other. The connection makes the assembling work cumbersome.

Further, it is attempted to visually check whether or not the lever 104 and the yoke 112 are connected (whether or not the lever supporting shaft 116 is fitted to the flanged engaging portion 108). This is obstructed by the side walls of the yoke 112 and the upper and lower walls of the flanged engaging portion 108. On the other hand, when the connection is confirmed by pulling the lever 104 and the yoke 112 in opposite directions, the lever 1
Since it is necessary to pull with a force higher than the pulling force necessary to connect the yoke 112 and the yoke 112, such a checking method requires skill. Therefore, the lever 104 and the yoke 11
There is also a problem that it is difficult to confirm the connection between the lever 2 and the lever 104 and the yoke 112 cannot be reliably connected.

[0008]

SUMMARY OF THE INVENTION In view of the above fact, the present invention is directed to a wiper blade which can prevent the resin levers from being inadvertently disconnected and can easily and surely connect the levers. The purpose is to get.

[0009]

According to a first aspect of the present invention, there is provided a wiper blade in which a plurality of resin levers are rotatably connected to each other to hold a blade rubber by a lever assembly. A first lever having at one end a key-shaped shaft insertion groove having one end opened and a shaft hole formed at the other end;
A connection shaft is provided below the lever and a connection shaft is provided. The connection shaft is inserted into the shaft insertion groove from the open portion and is rotatably supported by the shaft hole so as to be rotatable by the first lever. A second lever to be connected, wherein the connection shaft is engaged with an engagement portion provided on the first lever at a set position of the first lever and the second lever supported by the shaft hole. A connection in which the relative movement of the second lever with respect to the first lever in the longitudinal direction is restricted, and the second lever is rotated relative to the first lever by a predetermined angle about the connection shaft from the set position. A second stopper is provided on the second lever, wherein a stopper for allowing the connection shaft to be inserted into the shaft insertion groove at an angular position is provided.

According to the wiper blade of the first aspect, the connection shaft of the second lever is rotatably supported by the shaft hole provided in the shaft insertion groove of the first lever, so that the first lever is connected to the first lever. The second lever is rotatably connected. The arrangement of the first lever and the second lever in this connected state and in the use state of the wiper is the “set position”.

In this case, the pull-out stopper provided on the second lever engages with the engaging portion provided on the first lever at this set position to move the second lever relative to the first lever in the longitudinal direction. regulate. As a result, the connecting shaft cannot move to one end side (open side) of the shaft insertion groove.
It is possible to prevent the connection shaft from being disengaged from the shaft hole of the shaft insertion groove and accidentally releasing the connection between the first lever and the second lever.

Further, as described above, since the connection shaft can be prevented from moving toward the open portion side of the shaft insertion groove by the removal stopper, when connecting the second lever to the first lever,
It is sufficient to simply slide the connection shaft into the shaft hole along the shaft insertion groove, and if necessary, the connection shaft can be prevented from being fitted into the shaft insertion groove by elastic engagement (the first lever and the second lever).
It is not necessary to pull the lever and the lever in opposite directions with a large tensile force), so that the second lever can be easily connected to the first lever.

[0013] In addition, the pull-out stopper moves the second lever to the first lever.
The connection shaft is permitted to be inserted into the shaft insertion groove at a connection angle position where the lever is rotated relative to the lever by a predetermined angle about the connection shaft from the set position. For this reason, after the connecting shaft is inserted into the shaft hole from one end side (open side) of the shaft insertion groove in a state where each lever is arranged at the connecting angle position, the second lever is connected to the first lever to the set position with respect to the first lever. Can rotate the first lever relative to the first lever so that the second lever can be reliably connected to the first lever.

If the connecting shaft is not properly inserted into the shaft hole of the shaft insertion groove, the pull-out stopper cannot be engaged with the engaging portion of the first lever at the set position. The relative rotation to the set position with respect to one lever cannot be performed. Accordingly, if it is confirmed that the second lever can be relatively rotated to the set position, it can be confirmed that the second lever is properly connected to the first lever. Therefore, it is determined whether the second lever is connected to the first lever. It is possible to easily confirm whether or not the second lever is connected to the first lever without visual observation or skill.

The wiper blade according to a second aspect of the present invention is the wiper blade according to the first aspect, wherein the lever assembly is formed on one of the first lever and the second lever. The relative rotation of the second lever about the connection shaft with respect to the first lever is set within a predetermined range from the set position to the connection angle position by elastically engaging with one of the second levers. It is characterized by having a rotation limiting stopper for limiting.

According to the wiper blade of the second aspect, the rotation limiting stopper causes the first lever and the second lever to resiliently engage with each other, so that the second lever is pivotally connected to the first lever. The relative rotation is restricted to a predetermined range to prevent the connection angle position from being unnecessarily reached. For this reason, when transporting the lever assembly (each lever is connected) before assembling the blade rubber, or when assembling the blade rubber to this lever assembly, the second lever rotates relative to the first lever. Unnecessarily reaching the connection angle position can prevent the connection shaft from accidentally falling out of one end side (open side) of the shaft insertion groove. Thus, the first lever or the second lever can be prevented from being detached from the lever assembly before the blade rubber is assembled.

[0017]

FIG. 1 is a side view of a main part of a wiper blade 10 according to an embodiment of the present invention, which is partially cut away. FIG. 2 shows a wiper blade 10 and a wiper. The wiper arm 14 to which the blade 10 is connected is shown in a side view. Further, FIG. 3 shows the wiper blade 10 and the wiper arm 14 in an exploded side view.

The wiper blade 10 according to the embodiment of the present invention has a lever assembly 16. The lever assembly 16 has a primary lever 18 as a first lever and a yoke lever 20 as a second lever.
0 are both made of resin.

The primary lever 18 is disposed above the lever assembly 16, and a mounting shaft 22 is fixed to the longitudinal center of the primary lever 18. A connecting member 24 (for example, a clip) is rotatably supported by the mounting shaft 22. The U-shaped tip of the resin-made wiper arm 14 is fitted to the connecting member 24. , The wiper arm 10 and the wiper blade 10
Are rotatably connected (so-called U hook connection).
The wiper arm 14 has an arm head 12, and the arm head 12 is covered with a head cover 12A. The arm head 12 rotatably supports the retainer 13, and the arm head 12 and the retainer 13
A tension coil spring 15 is bridged between them.

A key-shaped shaft insertion groove 26 is formed at both ends of the primary lever 18. One end (the longitudinal center side of the primary lever 18) is opened downward in the shaft insertion groove 26, and a shaft hole 28 is formed in the other end (the longitudinal end side of the primary lever 18). A connection shaft 32 of the yoke lever 20 is inserted into the shaft hole 28 from an open portion of the shaft insertion groove 26. Further, an engagement portion 29 protruding downward is formed at the center of the shaft insertion groove 26 in the longitudinal direction of the primary lever 18. The engagement portion 29 forms a wall surface on the center side in the longitudinal direction of the primary lever 18 at the open portion of the shaft insertion groove 26.

A rotation limiting stopper 30 is formed on the engagement portion 29 at the longitudinal center of the primary lever 18. The rotation limiting stopper 30 is connected to the primary lever 18.
It is formed integrally with a resin and has an L-shape, which protrudes downward and is bent at the tip end, and has elasticity.

On the other hand, the yoke lever 20 is arranged below the primary lever 18. A central portion in the longitudinal direction of the yoke lever 20 is hollow, and this hollow portion is opened above and below the yoke lever 20.

A connecting shaft 32 extends between the side walls of the central portion of the yoke lever 20 in the longitudinal direction. The connection shaft 32 is inserted into the shaft insertion groove 26 of the primary lever 18 from an open portion and is rotatably supported by the shaft hole 28, so that the yoke lever 20 is rotatable at both ends of the primary lever 18. The arrangement of the primary lever 18 and the yoke lever 20 (the state shown in FIG. 1) in the connected state and the use state of the wiper is hereinafter referred to as “set position”.

A pull-out stopper 34 is formed between the side walls of the yoke lever 20 near the diagonally lower side of the connecting shaft 32.
The pull-out stopper 34 enters the shaft insertion groove 26 of the primary lever 18 at the set position,
As a result, the removal stopper 34 is attached to the primary lever 1.
8 can be brought into contact with (engaged with) the engagement portion 29, thereby restricting the relative movement of the yoke lever 20 with respect to the primary lever 18 in the longitudinal direction (the direction of the arrow X in FIG. 1). The relative movement of the yoke lever 20 toward the longitudinal center of the primary lever 18 is always restricted by the connection shaft 32 abutting on the shaft hole 28 of the primary lever 18 described above. 4, the yoke lever 20 is rotated relative to the primary lever 18 from the set position by a predetermined angle about the connection shaft 32 (in the present embodiment, the yoke lever 20 is rotated relative to the primary lever 18 with respect to the primary lever 18). When the end of the primary lever 18 abuts at a position other than the position where the is vertically arranged (the state of the solid line in FIG. 4), the insertion of the connecting shaft 32 into the shaft insertion groove 26 is not possible due to the end of the primary lever 18 abutting on the stopper 34. I have. This allows
The insertion of the connection shaft 32 into the shaft insertion groove 26 is permitted only at a connection angle position rotated by a predetermined angle θ1 from the set position.

An engaging claw 36 is provided on the upper central wall of the hollow portion of the yoke lever 20 in the longitudinal direction of the primary lever 18.
Are formed. As shown in FIG.
When the yoke lever 20 rotates relative to the primary lever 18 by a fixed angle about the connection shaft 32 from the set position (rotation of a smaller angle than rotation to the connection angle position),
The rotation limiting stopper 30 of the primary lever 18 described above.
The distal end is elastically engageable (hereinafter, such a position at which the elastic engagement is performed is referred to as a “rotation locking position”). This limits unnecessary rotation of the yoke lever 20 relative to the primary lever 18 beyond the rotational locking position to the coupling angle position. In the rotation range θ2 from the setting position to the rotation locking position, the above-described removal stopper 34 always enters the shaft insertion groove 26 of the primary lever 18 (contacts the engagement portion 29 (engages)). Accordingly, in the rotation range θ2 from the set position to the rotation locking position, the relative movement of the yoke lever 20 with respect to the primary lever 18 toward the center of the primary lever 18 in the longitudinal direction is always restricted. I have.

In a state in which the yoke lever 20 is connected to the primary lever 18 (the state of the lever assembly 16), the blade rubber 38 with the backing 40 held at the upper portion is attached to both ends of the yoke lever 20 in the longitudinal direction. Blade rubber 3 on lever assembly 16
8 is retained.

Next, the operation of the present embodiment will be described.

The wiper blade 10 having the above-described structure is similar to that shown in FIG.
As shown in the figure, the connection shaft 32 of the yoke lever 20 is rotatably supported by the shaft hole 28 provided in the shaft insertion groove 26 of the primary lever 18, so that the yoke lever 20 can be rotated by the primary lever 18. Are linked.
As described above, the primary lever 1 in this connection state
The arrangement of 8 and the yoke lever 20 is the “set position”.

Here, the stopper 34 provided on the yoke lever 20 enters the shaft insertion groove 26 of the primary lever 18 at this set position (the engaging portion 2).
9), the relative movement of the yoke lever 20 with respect to the primary lever 18 toward the center side of the primary lever 18 in the longitudinal direction is regulated. As a result, the connecting shaft 32 cannot move to one end side (open side) of the shaft insertion groove 26, and the connecting shaft 32 is disengaged from the shaft hole 28 of the shaft insertion groove 26, and the connection between the primary lever 18 and the yoke lever 20 is not established. It can be prevented from being easily released.

Further, within the rotation range from the set position to the rotation locking position (the position where the rotation limiting stopper 30 and the locking claw 36 of the yoke lever 20 are elastically engaged, see FIG. 5), the removal stopper 34 is Since it is always inserted into the shaft insertion groove 26 of the primary lever 18 (it is possible to abut (engage) with the engaging portion 29), it is always within the rotation range from the set position to the rotation locking position. Inadvertent release of the connection between the primary lever 18 and the yoke lever 20 can be prevented.

Further, as shown in FIG. 4, the pull-out stopper 34 is provided at a connection angle position (a connection angle position obtained by rotating the yoke lever 20 relative to the primary lever 18 by a predetermined angle θ1 about the connection shaft 32 from the set position, In the present embodiment, the connection shaft 32 is permitted to be inserted into the shaft insertion groove 26 only at the position where the yoke lever 20 is arranged perpendicular to the primary lever 18 (the state shown by the solid line in FIG. 4). That is, at positions other than the connection angle position, the removal stopper 34 and the end of the primary lever 18 interfere with each other, and the connection shaft 32
Cannot be inserted into the shaft hole 28. For this reason, after the connecting shaft 32 is inserted into the shaft hole 28 from one end side (open side) of the shaft insertion groove 26 in a state where the primary lever 18 and the yoke lever 20 are arranged at the connecting angle position, the yoke lever 2
The yoke lever 20 can be connected to the primary lever 18 by rotating the 0 relative to the primary lever 18 by a predetermined angle around the connection shaft 32 to the set position. When the yoke lever 20 is relatively rotated from the connection angle position to the set position as described above, the rotation limiting stopper 30 engages with the locking claw 36 of the yoke lever 20 at the rotation locking position. By bending the rotation limiting stopper 30 having the above, the yoke lever 20 can be relatively rotated to the set position beyond the rotation locking position.

Here, as described above, the removal stopper 34 comes into contact (engagement) with the engagement portion 29 so that the connection shaft 32
Can be prevented from moving to the open side of the shaft insertion groove 26, so that it is not necessary to provide a conventional flange in the shaft insertion groove 26. Further, according to this configuration, when connecting the yoke lever 20 to the primary lever 18, it is sufficient to simply slide the connection shaft 32 into the shaft hole 28 along the shaft insertion groove 26, and the connection shaft 32 is inserted through the shaft. Although it is possible not to fit in the groove 26 by elastic engagement, it is needless to say that the flange may be formed on the open side of the shaft insertion groove.

The connecting shaft 32 is connected to the shaft hole 2 of the shaft insertion groove 26.
8 is not properly inserted into the shaft insertion groove 26 at the set position (the engaging portion 2).
9 cannot be brought into contact with (engagement with) the primary lever 18, so that the yoke lever 20 cannot be relatively rotated to the set position with respect to the primary lever 18. As a result, if the yoke lever 20 can be relatively rotated to the set position, it can be confirmed that the yoke lever 20 is properly connected to the primary lever 18, so that it is determined whether or not the yoke lever 20 is connected to the primary lever 18. Can be easily performed without visual observation or skill, and therefore, the yoke lever 20 can be securely connected to the primary lever 18.

Further, as shown in FIG. 5, the rotation limiting stopper 30 elastically engages with the locking claw 36 of the yoke lever 20, thereby the primary lever 1 of the yoke lever 20 is moved.
The rotation relative to the connection shaft 8 around the connection shaft 32 is restricted within a predetermined range (a rotation range θ2 from the set position to the rotation locking position) to restrict unnecessary arrival at the connection angle position. For this reason, when the lever rubber 16 is assembled before the blade rubber 38 is assembled (the primary lever 18 and the yoke lever 20 are connected to each other) or when the blade rubber 38 is assembled to the lever assembly 16, the yoke lever 20 is moved to the primary position. Lever 1
8, the connection shaft 32 is unnecessarily reached beyond the rotation locking position to reach the connection angle position.
6 can be prevented from inadvertently coming out from one end side (open side). As a result, before the blade rubber 38 is assembled, the primary lever 1 is removed from the lever assembly 16.
8 or the yoke lever 20 can be prevented from coming off. (Modification) FIG. 6 is a side view in which a main part of a wiper blade 50 according to a modification of the present embodiment is partially broken.

In the lever assembly 51 of the wiper blade 50 according to the present modification, a rotation limiting stopper 56 is formed on the primary lever 52, and the rotation limiting stopper 56 projects downward into the open portion of the shaft insertion groove 26 and The distal end is bent to form an L shape and has elasticity.

An engagement portion 55 is formed at the longitudinal center of the primary lever 52 of the rotation limiting stopper 56, and the engagement portion 55 protrudes downward.

On the other hand, the removal stopper 58 formed on the yoke lever 57 is at the set position (the position where the primary lever 52 and the yoke lever 57 are arranged in the normal connection state).
At the same time, the primary lever 52 is inserted into the shaft insertion groove 26 of the primary lever 52, and the removal stopper 58 and the engagement portion 55 abut (engage) with each other. Yoke lever 5
7 are restricted from moving relative to each other. The relative movement of the yoke lever 57 toward the center in the longitudinal direction of the primary lever 52 can be achieved by removing the stopper 58 from the rotation limiting stopper 56.
Is regulated by being able to abut. Also,
A connection angle position where the yoke lever 57 is relatively rotated about the connection shaft 32 by a predetermined angle from the set position with respect to the primary lever 52 (in this modification, a position at which the rotation limiting stopper 56 elastically engages with a later-described locking claw 60). At positions other than the position where the yoke lever 57 is relatively rotated beyond the above), the rotation limiting stopper 56 abuts against the pull-out stopper 58, so that the connection shaft 32 cannot be inserted into the shaft insertion groove 26. Thus, the insertion of the connection shaft 32 into the shaft insertion groove 26 is permitted only at this connection angle position.

An engaging claw 60 is formed on the upper part of the stopper 58 integrally with the stopper 58. When the yoke lever 57 rotates relative to the primary lever 52 by a predetermined angle relative to the primary lever 52 from the set position about the connection shaft 32 (rotation of a smaller angle than rotation to the connection angle position), the above-described primary lever 52 is rotated. Is elastically engageable with the tip of the rotation restricting stopper 56 (hereinafter, the position at which such elastic engagement is performed is referred to as a “rotation locking position”). This restricts unnecessary rotation of the yoke lever 57 relative to the primary lever 52 beyond the rotation locking position to the connection angle position. In the rotation range from the setting position to the rotation locking position, the above-described pull-out stopper 58 always enters the shaft insertion groove 26 of the primary lever 52 (the engagement portion 55 and the rotation restriction stopper 5).
6), whereby the yoke lever 57 always moves relative to the primary lever 52 on both sides in the longitudinal direction of the primary lever 52 within the rotation range from the set position to the rotation locking position. The movement is restricted.

The other structure is the same as that of the above embodiment.

As described above, in this modification, the rotation limiting stopper 30 of the above embodiment is formed so as to protrude downward in the shaft insertion groove 26 of the primary lever 52, and the yoke lever 20 of the above embodiment is formed. By forming the locking claw 36 as the locking claw 60 integrally formed on the upper part of the pull-out stopper 58, the same operation as in the above embodiment can be achieved. That is, the removal stopper 58
Is a connection angle position (a position where the yoke lever 57 is rotated relative to the primary lever 52 by a predetermined angle about the connection shaft 32 from the set position. In this modification, the yoke lever 57 is moved beyond the rotation locking position. (Rotated position)
Only the connection shaft 32 is permitted to be inserted into the shaft insertion groove 26.
That is, in the rotation range from the setting position to the rotation locking position, the pull-out stopper 58 and the engaging portion 55 interfere with each other, and the connecting shaft 32 cannot be inserted into the shaft hole 28. For this reason,
With the primary lever 52 and the yoke lever 57 arranged at this connection angle position, the connection shaft 32 is inserted into the shaft insertion groove 2.
After the yoke lever 57 is inserted into the shaft hole 28 from one end side (open side) of the 6, the yoke lever 57 is rotated relative to the primary lever 52 to the set position by a predetermined angle around the connection shaft 32 to set the yoke lever 57 on the primary lever 52. Can be linked. When the yoke lever 57 is relatively rotated from the connection angle position to the set position in this manner, the rotation limiting stopper 56 engages with the locking claw 60 of the yoke lever 57 at the rotation locking position. The yoke lever 57 can be relatively rotated to the set position beyond the rotation locking position by bending the rotation restricting stopper 56 having. Other operations are the same as those in the above embodiment.

In the above-described embodiment (including the modification), the connecting member 24 is supported by the mounting shaft 22 on the primary levers 18, 52 of the wiper blades 10, 50, and the wiper arm 14 is also made of resin. The tip of the wiper arm 1 is U-shaped.
The wiper blades 10, 50 are connected to the wiper arm 14 by fitting the U-shaped tip of 4 into the connecting member 24. That is, the wiper blades 10, 50
Has a connection configuration similar to a so-called U hook connection using a conventional metal U-shaped arm piece. Therefore,
The wiper blades 10 and 50 according to the embodiment (including the modified example) can be attached not only to the wiper arm 14 made of resin but also to a wiper arm made of metal.

In the present embodiment (including the modification),
The removal stoppers 34 and 58 can be brought into contact with the engagement portions 29 and 55 to regulate the relative movement of the yoke levers 20 and 57 with respect to the primary levers 18 and 52 toward the center of the primary levers 18 and 52 in the longitudinal direction. Connecting shaft 3
2 comes into contact with the shaft hole 28 of the shaft insertion groove 26 (or the pull-out stopper 58 comes into contact with the rotation limiting stopper 56), so that the primary lever 18 of the yoke levers 20, 57,
52, the relative movement toward the center in the longitudinal direction is restricted. However, the invention is not limited to this. The stoppers 34, 58 can be inserted into the shaft insertion groove 26 to be able to contact both walls of the shaft insertion groove 26. As a result, the primary levers 18, 5 of the yoke levers 20, 57 with respect to the primary levers 18, 52 are
(2) It may be configured to restrict relative movement to the center side and the opposite center side in the longitudinal direction.

Further, the pull-out stoppers 34 and 58 are connected to the yoke levers 20 and 5 with respect to the primary levers 18 and 52, respectively.
It is sufficient to restrict the relative movement of at least one of the primary levers 18 and 52 to one longitudinal side, and the relative movement of the primary levers 18 and 52 to the other longitudinal side is controlled by the primary levers 18 and 52 and the yoke lever 20.
The configuration may be such that the wall surfaces of the 57 are brought into contact with each other and regulated.

In the present embodiment (including the modification),
Rotation limit stopper 3 on primary levers 18 and 52
Although the rotation limiting stoppers 30 and 56 are provided so as to be able to abut against the locking claws 36 and 60 of the yoke levers 20 and 57, the rotation limiting stopper is not limited to this, and the rotation limiting stopper may be provided on the yoke lever. The rotation limiting stopper may be provided so as to be able to contact the primary lever.

[Brief description of the drawings]

FIG. 1 is a partially broken side view showing a main part of a wiper blade (set position) according to an embodiment of the present invention.

FIG. 2 is a side view showing a wiper blade and a wiper arm to which the wiper blade is connected.

FIG. 3 is an exploded side view showing a wiper blade and a wiper arm to which the wiper blade is connected.

FIG. 4 is a partially broken side view showing a state where the yoke lever is connected to the primary lever of the wiper blade (connection angle position).

FIG. 5 is a partially broken side view showing a state in which a locking claw of a yoke lever is elastically engaged with a rotation limiting stopper of a primary lever (rotationally locked position).

FIG. 6 is a partially broken side view showing a main part of a wiper blade (set position) according to a modification of the present embodiment.

FIG. 7 is a partially broken side view showing a conventional wiper blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wiper blade 16 Lever assembly 18 Primary lever (1st lever) 20 Yoke lever (2nd lever) 26 Shaft insertion groove 28 Shaft hole 29 Engagement part 30 Rotation limiting stopper 32 Connecting shaft 34 Removal stopper 38 Blade rubber 50 Wiper blade 51 Lever assembly 52 Primary lever (first lever) 55 Engagement part 56 Rotation restriction stopper 57 Yoke lever (second lever) 58 Pull-out stopper

Continued on the front page (72) Inventor Toshio Iizuka 2-290 Naganecho, Obu City, Aichi Prefecture Inside Tokai Riki Mfg. Co., Ltd. (72) Inventor Yoshinori Takagi 2-290 Naganecho Obu City, Aichi Prefecture Tokai Riki Co., Ltd. F term in the factory (reference) 3D025 AA01 AC01 AD01 AE05 AE08 AE25 AE28

Claims (2)

[Claims] 1. A wiper blade holding a blade rubber by a lever assembly formed by rotatably connecting a plurality of resin levers, wherein the lever assembly has one end opened and a shaft hole formed at the other end. A first lever having a key-shaped shaft insertion groove formed at an end thereof, a connection shaft provided below the first lever and a connection shaft provided, and the connection shaft inserted into the shaft insertion groove from the open portion. And a second lever rotatably supported by the shaft hole and rotatably connected to the first lever. The first lever and the second lever, wherein the connection shaft is supported by the shaft hole At a set position with the two levers, the first lever is engaged with an engaging portion provided on the first lever to restrict relative movement of the second lever in the longitudinal direction with respect to the first lever. A second stopper is provided on the second lever so as to allow the connection shaft to be inserted into the shaft insertion groove at a connection angle position where the second lever is relatively rotated by a predetermined angle about the connection shaft from the set position. A wiper blade, characterized in that: 2. The connecting shaft, wherein the lever assembly is formed on one of the first lever and the second lever, and is elastically engaged with the other one of the first lever and the second lever. A rotation limiting stopper for limiting a relative rotation of the second lever with respect to the first lever around a predetermined range from the set position to the connection angle position. Wiper blade.