JPH11291873A - Wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the degradation waterproof or dispersion in arm pressure while regulating the rotation of a pivot shaft during the releasing of an opening/ closing window in a wiper device supporting a rotary shaft connected to a wiper driving part on a car body side and supporting the pivot shaft on the freely opened/closed window. SOLUTION: A clutch body 11 for disconnecting a rotary shaft 9 and a pivot shaft 4 from each other is constructed in such a manner that in the closed state of a opening/closing window 2, a first attitude is taken where a first engaging projection 13a is engaged with a connecting plate engaging hole 10a and a second engaging projection 13b and a sleeve 5 are disengaged from each other, and in the open state of the opening/closing window, a second attitude is taken where the first engaging projection and the connecting plate are disengaged from each other and the second engaging projection is engaged with a sleeve engaging groove 5d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a wiper device provided in a vehicle.

[0002]

2. Description of the Related Art In general, vehicles such as hatchback vehicles, wagon vehicles, and one-box vehicles are provided with a rear gate which can be freely opened and closed. Some have open / close windows. By the way, when a wiper device for wiping such an opening / closing window is attached to the opening / closing window side up to the wiper driving unit, the weight of the opening / closing window becomes heavy, and a hinge portion or the like for supporting the opening / closing window so as to be able to swing open / close. In addition, there is a problem that the strength must be increased and the opening / closing operation becomes heavy. Therefore, conventionally, a wiper body such as a blade, a wiper arm, and a pivot shaft is attached to an opening / closing window, while a wiper driving unit such as a wiper motor and a link mechanism is attached to a vehicle body side.
There is known an apparatus in which a wiper main body and a wiper driving section can be intermittently connected with the opening and closing of an opening / closing window.

[0003]

In the above-mentioned conventional wiper device, when the opening window is opened, the wiper main body is separated from the wiper driving unit and becomes free, so that the wiper main body is pivoted about the pivot shaft. As a result, the wiper main body and the wiper drive unit are not allowed to be out of position, and the swiveled wiper main body may be damaged by hitting an obstacle. . Therefore, as shown in Japanese Utility Model Publication No. Hei 8-6649, the pivot shaft is provided so as to be movable in the thrust direction, a flange surface is formed at a portion of the pivot shaft protruding outside the vehicle, and the opening and closing window is opened. The rotation of the pivot shaft is restricted by engaging the flange surface of the pivot shaft with a sleeve (collar, pivot holder) fixed to the opening / closing window in a detent manner, while the pivot shaft is closed when the opening / closing window is closed. Is forcibly moved to the outside of the vehicle by being brought into contact with and pressed against the rotation shaft of the wiper driving unit, thereby releasing the rotation restriction so that the flange surface is separated from the collar. It has been proposed. However, this is inferior in waterproofness because the engagement portion between the flange surface and the sleeve is on the outside of the vehicle and the pivot shaft moves in the axial direction, and rainwater or the like infiltrates from this portion. In addition, there is a problem that it is difficult to position the pivot shaft and the rotation shaft in the axial direction. Further, the arm shank for generating a pressing force on the window surface of the wiper blade in the wiper arm is configured such that a pivot shaft movable in the thrust direction is pressed toward the inside of the vehicle by the urging force of the ammunition machine. The initial pressure setting of the pulling ammunition provided in the inside of the pulling arm increases the tolerance due to the thrust movement of the pivot shaft, which also affects the pressing force of the wiper arm, causing variations. There is also a problem that adjustment is difficult, and these have problems to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been created with the object of solving these problems. A wiper device for wiping, wherein the wiper device is rotatably supported in the open / close window side so as to penetrate inside and outside, and has a wiper arm integrally attached to a tip end protruding outside the vehicle; A pivoting member rotatably supported on the side, and pivoting based on the drive of the wiper driving unit, and a base end protruding inward of the pivot shaft is provided so as to rotate integrally with the pivot shaft, and A first engagement portion for removably engaging the first engagement receiving portion on the rotating body to make the pivot shaft integrally rotate with respect to the rotating body; and a second engagement receiving portion on the opening / closing window side. The pivot shaft is attached to the opening window And a clutch body provided with a second engagement portion for bringing the rotation into a rotation restricting state. Further, in the clutch body, when the opening / closing window is closed, the first engagement portion is in a first engagement state. In a state where the first engaging portion is engaged with the second engaging portion and the second engaging portion is disengaged from the second engaging receiving portion, and the opening / closing window is opened, the first engaging portion of the first engaging portion is opened. It is configured to be disengaged from the mating portion and to be automatically deformed so that the second engaging portion is in the second posture for engaging the second engaging portion. By doing so, while the rotation of the pivot shaft can be restricted while the opening / closing window is opened, there is no problem that the waterproof property is impaired or the arm pressure varies, and Alignment in the axial direction is easy, and a smooth wiping operation can be performed. In this, the clutch body has a support body integrally attached to a base end portion of the pivot shaft, a first engagement portion and a second engagement portion, and the support body has a direction around the axis of the pivot shaft. Using a rocking body pivotally supported so as to be freely swingable into a first posture and a second posture in a state of being integrally rotated, and a biasing machine for biasing the rocking body toward the second posture. The swinging body is further provided with an interference portion that changes the swinging body to a first position against the biasing ammunition by interfering with the rotating body when the opening / closing window is closed. It can be. Further, the second engagement receiving portion can be formed in a sleeve fixed to the opening / closing window side and rotatably supporting the pivot shaft.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a rear gate of a vehicle, and a glass opening / closing window 2 is attached to the rear gate 1 via a hinge 3 so as to be vertically openable and slidable.

Reference numeral 4 denotes a pivot shaft constituting a wiper device for wiping the opening / closing window 2;
Is rotatably supported by a cylindrical inner peripheral portion 5a of a sleeve 5 described later so as to penetrate the cylindrical inner peripheral portion 5a in the axial direction. The base end of the wiper arm 6 is integrally attached to the upper end (tip) of the pivot shaft 4 projecting outward from the sleeve cylinder inner peripheral portion 5a. And a wiper blade 7 provided with a rubber (not shown) for wiping the window surface.

The sleeve 5 is fixed to a through hole 2a formed in the opening / closing window 2 via a rubber bush 8 while penetrating the opening / closing window 2 in and out. As described above, the pivot shaft 4 is rotatably supported on the cylindrical inner peripheral portion 5a. The sleeve 5 has a large-diameter portion located inside the vehicle. A lower portion of the large diameter portion 5b is formed with an outer cylindrical portion 5c whose central portion is hollow and whose outer peripheral side is suspended in a cylindrical shape. 13
A plurality of engagement grooves 5d (corresponding to a second engagement receiving portion of the present invention) with which b is detachably engaged are formed at appropriate intervals in the circumferential direction.

On the other hand, reference numeral 9 denotes a rotating shaft rotatably supported by the rear gate 1 on the side of the frame 1a.
Are arranged coaxially with the pivot shaft 4 with the opening / closing window 2 closed, and the rotating shaft 9 is linked to a wiper motor via a link mechanism. The wiper motor is attached to the rear gate frame 1a (not shown), and is configured to rotate forward and backward based on the drive of the wiper motor. Further, a substantially disk-shaped connecting plate 10 that is integrally rotated with the rotating shaft 9 is fixed to the tip of the rotating shaft 9.
The connection plate 10 has a first engagement protrusion 13a to be described later.
Is provided with an engagement hole 10a (corresponding to a first engagement receiving portion of the present invention) which engages with a detachable manner.

Reference numeral 11 denotes a clutch body for intermittently connecting the pivot shaft 4 and the connecting plate 10. The clutch body 11 includes a support 12, a rocking body 13,
The support 12 is integrally attached to a lower end (base end) of the pivot shaft 4 protruding inward from the vehicle, and the support body 12 is formed integrally with the pivot shaft 4. And extends in a direction substantially perpendicular to the axial direction.

Further, the rocking body 13 has both side portions 13c, 13 fitted on both sides of the front end half of the support body 12.
d, an upper surface 13e connecting the upper ends of the both side surfaces 13c and 13d, and a front side surface 13f connecting the front ends of the two side surfaces 13c and 13d. The base end of 13 d is pivotally supported at the center of the support 12 via a pin shaft 15 so as to be able to swing up and down, so that the swing body 13 is pivotally connected to the pivot shaft 4 around the pivot shaft 4. It is configured to be rotatable integrally with the support 12 in the circumferential direction, and to be able to swing up and down about the pin shaft 15 with respect to the support 12. An extended upper surface portion 13g extending toward the pivot shaft 4 extends from the upper surface portion 13e, and a through-hole 13h formed in the extended upper surface portion 13g has a base end portion of the pivot shaft 4. Penetrates loosely.

The vertical swing of the rocker 13 with respect to the support 12 is caused by the extension of the upper surface 13 of the rocker 13 with respect to the first cam surface 12a formed on the base end side of the upper surface of the support 12.
When the upper surface 13e of the oscillating body 13 abuts on the second cam surface 12b formed on the top end side of the upper surface of the support 12, the further upward movement is restricted by the contact of g. The above downward movement is regulated. Further, a coil spring 14 is interposed between the first cam surface 12a and the extended upper surface 13g so as to be wound around the pivot shaft 4, and the urging force of the coil spring 14 is provided. As a result, the tip side surface portion 13f of the rocking body 13 is constantly urged downward.

In the center of the lower surface of the tip side surface portion 13f of the rocking body 13, an engagement hole 10a of the connection plate 10 is provided.
A first engaging projection 13a is formed so as to protrude downward. Further, an interference surface portion 13i slightly projecting downward is formed on the lower surface of the distal end side surface portion 13f on both sides of the first engagement protrusion 13a. When the opening window 2 is open, that is, when the clutch body 11 provided on the opening / closing window 2 side is separated from the connection plate 10 provided on the rear gate frame 1a side, the first engagement protrusion 13a is The rocking body 13 is separated from the engagement hole 10a and is disengaged. At this time, the rocking body 13 receives the urging force of the coil spring 14 so that the upper surface portion 13e is brought into contact with the second cam surface 12b of the support body 12. It is in the second posture in which the lowering is restricted by further contact (see FIG. 3). On the other hand, when the open window 2 is closed,
The first engagement projection 13a is set so as to be fitted into and engaged with the engagement hole 10a from above, so that when the connection plate 10 rotates together with the rotation shaft 9 based on the drive of the wiper motor. The rocking body 13 rotates integrally with the connecting plate 10, and the supporting body 1
2 and the pivot shaft 4 are integrally rotated. When the first engagement protrusion 13a is engaged with the engagement hole 10a, both side portions of the engagement hole 10a are in contact with the interference surface portion 13i and the tip side surface portion 13f of the rocking body 13 is provided.
Is pressed upward, whereby the oscillator 13
Is in a first position in which the tip side surface portion 13f moves upward against the urging force of the coil bullet 14 and becomes substantially parallel to the axial direction of the pivot shaft 4 (see FIG. 2). In the first posture, the extended upper surface 13g of the rocking body 13 is
The second cam surface 12b is separated from the second cam surface 12b, and further upward movement of the rocking body 13 beyond the first posture is allowed.

Further, the inner side of the tip side face portion 13f of the rocking body 13 is opposed to the tip side face of the support body 12, and these opposed faces are provided with the first engagement protrusion 13a and the pivot shaft 4. A ridge 13j and a concave groove 12c that are directed in the up-down direction are respectively formed at portions located on a line connecting the axis and the axis. The projecting ridge 13j and the concave groove 12c are fitted so that the rocking body 13 rotates integrally with the support 12 and the pivot shaft 4 and the rocking body 13 can vertically rock with respect to the support 12. I have. Thus, when the swinging body 13 in the first posture rotates integrally with the connecting plate 10, almost all the load is applied to the pin shaft 15 that pivotally supports the swinging body 13 vertically with respect to the support 12. In a state that does not
The supporting body 12 and the pivot shaft 4 can rotate together with the rocking body 13.

A second engaging projection 13b is provided on the upper surface 13e of the rocking body 13 so as to project upward to engage with the engaging groove 5d of the sleeve 5 in a detachable manner. The second engagement protrusion 13b is provided in the outer cylinder portion 5 of the sleeve 5 when the rocking body 13 is in the first posture described above.
c, the rocking body 13 can freely rotate with respect to the sleeve 5.
3 is in the second posture, the second engagement protrusion 13
b moves to the outer diameter side and engages with the engagement groove 5d, whereby the rotation of the rocking body 13 with respect to the sleeve 5 is restricted, that is, the pivot shaft that rotates integrally with the rocking body 13. The rotation of the sleeve 4 with respect to the sleeve 5 is restricted.

By the way, when opening the opening / closing window 2,
The drive of the wiper motor is stopped, and at this time, the rotation position of the pivot shaft 4 is located at the storage position where the wiper arm 6 is in the storage position. When the pivot shaft 4 is located at the storage position, the second engagement protrusion 13b of the rocking body 13 is set to be engaged with the engagement groove 5d of the sleeve 5. That is, in the state where the opening / closing window 2 is closed, the rocking body 13 is in the first posture in which the first engagement protrusion 13a is engaged with the engagement hole 10a of the connection plate 10 as described above. By separating from the connecting plate 10 based on the opening of the window 2, the rocking body 13 automatically changes to the second posture by receiving the urging force of the coil bullet 14. At this time, since the pivot shaft 4 is located at the storage position, the second engagement projection 13b is
5d. On the other hand, when the opening window 2 is open, the swinging body 13 is in the second position and the second engagement protrusion 13b is engaged with the engagement groove 5d of the sleeve 5, so that the pivot shaft 4 is rotated. Although the movement is restricted, it is possible to prevent the wiper arm 6 in the storage posture from inadvertently swinging. However, in the state where the opening window 2 is opened, the pivot Since the shaft 4 does not rotate, when the open window 2 is closed again, the first engagement protrusion 13
a is adapted to be fitted from above and engaged with the engagement hole 10a of the connecting plate 10 in a state of being aligned. Further, at this time, the interference surface portions 1 on both sides of the first engagement protrusion 13a are provided.
3i comes into contact with both side portions of the engagement hole 10a of the connecting plate 10 and presses the rocking body 13 upward, whereby the rocking body 1
3 automatically changes to the first position, and the second engagement protrusion 1
The engagement between the engagement groove 3b and the engagement groove 5d of the sleeve 5 is released.

Incidentally, the wiper arm 6 may not be in the retracted position when the wiper motor stops driving (for example, when the engine stops during the operation of the wiper).
However, if the opening / closing window 2 is opened in this state, the position of the second engagement protrusion 13b of the rocking body 13 and the engagement groove 5d of the sleeve 5 may be shifted and not engaged. Even in such a case, since the engagement grooves 5d are formed at predetermined intervals in the circumferential direction as described above, the pivot shaft 4 is slightly moved with the opening / closing window 2 opened. When rotated, the second engagement protrusion 13b is engaged with any of the engagement grooves 5d, and the rotation of the pivot shaft 4 is restricted. By the way, when the opening / closing window 2 is closed in a state where the pivot shaft 4 is slightly rotated and the second engagement protrusion 13b is engaged with the engagement groove 5d, the pivot shaft 4 is rotated. Only the first engagement projection 13a and the engagement hole 10a of the connection plate 10 are displaced from each other, and the first engagement projection 13a rides on the upper surface of the connection plate 10 as shown in FIG. 13 moves further upward than the first posture. In such a case, the first engagement protrusion 13a may be engaged with the engagement hole 10a by driving the wiper motor to rotate the connection plate 10.

In the construction as described above, the pivot shaft 4 attached to the opening / closing window 2 side and the rotating shaft 9 attached to the rear gate frame 1a and rotated by the drive of the wiper motor include a clutch body. 11, the clutch body 11 is connected intermittently.
The first engaging projection 13a engages with the engaging hole 10a of the connecting plate 10 and the second engaging projection 13b engages with the sleeve 5 by the vertical swing of the swinging body 13 accompanying the opening and closing of the opening / closing window 2. Groove 5d
Is disengaged, that is, the pivot shaft 4 is
And the first engagement protrusion 13a is disengaged from the connection plate engagement hole 10a, and the second engagement protrusion 13b is The engagement with the sleeve engagement groove 5d, that is, the pivot shaft 4 becomes free from the rotation shaft 9 and changes to the second posture in which the rotation is restricted with respect to the sleeve 5.

As a result, when the opening / closing window 2 is released, the rotation of the pivot shaft 4 is restricted to prevent the wiper arm 6 from inadvertently swinging. Unlike the configuration in which the rotation of the pivot shaft is restricted based on the movement of the shaft in the thrust direction, the waterproofness is not impaired, and there is no problem that the arm pressure varies, and the pivot is used. Alignment of the shaft 4 and the rotating shaft 9 in the axial direction is easy, and a smooth wiping operation can be performed.

In the present embodiment, a coil ammunition is used as a biasing elasticity of the clutch body. However, the present invention is not limited to this. is there.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a vehicle.

FIG. 2 is a diagram showing a main part when the opening / closing window is closed.

FIG. 3 is a diagram showing a main part when an opening / closing window is opened.

FIG. 4 is a bottom view of the clutch body.

FIG. 5 is a view showing a state in which a first engagement protrusion and an engagement hole are displaced.

[Explanation of symbols]

 Reference Signs List 2 opening / closing window 4 pivot shaft 5 sleeve 5d engagement groove 6 wiper arm 9 rotation shaft 10 connection plate 10a engagement hole 11 clutch body 12 support 13 rocking body 13a first engagement projection 13b second engagement projection 13i interference surface section 14 Coil ammunition

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[Procedure amendment]

[Submission date] June 1, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been created with the object of solving these problems. A wiper device for wiping, wherein the wiper device is rotatably supported in the open / close window side so as to penetrate inside and outside, and has a wiper arm integrally attached to a tip end protruding outside the vehicle; A pivoting member rotatably supported on the side and rotating based on the drive of the wiper driving portion, and a base end protruding inward of the pivot shaft is provided so as to rotate integrally with the pivot shaft, and Opening window
In the closed state, the first engagement portion for removably engaging the first engagement receiving portion on the rotating body to make the pivot shaft integrally rotate with the rotating body, and the opening / closing window are opened. In this state, the clutch provided with the second engagement portion for removably engaging with the second engagement receiving portion on the opening / closing window side to bring the pivot shaft into a rotation-restricted state with respect to the opening / closing window. It is a configuration using a body. By doing so, while the rotation of the pivot shaft can be restricted while the opening / closing window is opened, there is no problem that the waterproof property is impaired or the arm pressure varies, and Alignment in the axial direction is easy, and a smooth wiping operation can be performed. Further, in the clutch body, the clutch body includes a support body integrally attached to a base end of the pivot shaft, a first engagement portion and a second engagement portion, and the support body is provided around the pivot shaft. a swinging body is pivotally supported Hensugata swung into a first position and a second position in a state of integrally rotated in a direction, a biasing bullet machine for biasing the swinging motion to a second position side, the An interfering portion provided on the rocking body, and interfering with the rotating body when the opening / closing window is closed to change the rocking body to the first position against the urging ammunition.
It can be configured as such. Further, the second engagement receiving portion can be formed in a sleeve fixed to the opening / closing window side and rotatably supporting the pivot shaft.

Claims (3)

[Claims] 1. A wiper device for wiping an open / close window which is attached to a vehicle body so as to open / close and swing freely, said wiper device being rotatably supported by an open / close window side so as to penetrate inside and outside, and being mounted on the outside of the vehicle. A pivot shaft having a wiper arm integrally attached to a protruding tip portion, a rotating member rotatably supported on the vehicle body side and rotating based on driving of a wiper driving portion, and protruding inward from the pivot shaft. The pivot shaft is provided at the base end to be rotated integrally with the pivot shaft, and is removably engaged with the first engagement receiving portion on the rotating body to make the pivot shaft integrally rotate with the rotating body. And a second engagement portion for removably engaging the second engagement receiving portion on the opening / closing window side to bring the pivot shaft into a rotation restricted state with respect to the opening / closing window. A clutch body, and further, the clutch body has an opening / closing window closed. In the state, the first engaging portion is engaged with the first engaging receiving portion, and the first engaging portion is in the first position in which the second engaging portion is disengaged from the second engaging receiving portion. In the open state, the first engagement portion is disengaged from the first engagement receiving portion,
The wiper device is configured to be automatically deformed so that the second engagement portion is brought into a second posture in which the second engagement portion is engaged with the second engagement receiving portion. 2. The clutch body according to claim 1, wherein the clutch body includes a support body integrally attached to a base end of the pivot shaft, a first engagement section and a second engagement section, and the support body includes A swinging body pivotally supported so as to be freely swingable in a first posture and a second posture in a state of being integrally rotated about the pivot shaft, and a biasing force for biasing the swinging body toward the second posture side And an interfering portion, which is configured by using an ammunition, and interfering with the rotating body due to the closing of the opening / closing window, transforming the oscillating body into the first posture against the urging ammunition. Wiper device provided with. 3. The wiper device according to claim 1, wherein the second engagement receiving portion is formed on a sleeve fixed to the opening / closing window side and rotatably supporting the pivot shaft.