JPH05330403A - Housed wiper - Google Patents

Abstract

PURPOSE:To provide a house wiper which can house a wiper blade and a wiper arm in a simple structure and can prevent deterioration of blade rubber of the wiper blade surely during housing. CONSTITUTION:A pivot shaft 16 of a housed wiper 10 is retained by an inner holder 20. The inner holder 20 engages with a ring gear 30 to be moved in the axial direction. The axial direction, that is, the moving direction of the pivot shaft 16 is inclined to the ordinary moving surface of a lever 50. In the case of housing the wiper, when the pivot shaft 16 is moved along the axis by the rotation of the ring gear 30, the connecting position (connecting rod 52) of the lever 50 is substantially rotated and moved with respect to the plane of rotation (plane intersecting perpendicularly to the axis) of the pivot shaft 16, whereby a wiper arm 12A and a wiper blade 14A are moved to be housed, and the locking position of a spring is displaced to decrease the arm pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper which wipes raindrops adhering to a surface to be wiped, such as a windshield glass of a vehicle, by reciprocally rotating the wiper blade, and more particularly to a retractable wiper capable of storing a wiper blade and a wiper arm. ..

[0002]

2. Description of the Related Art Among wipers for wiping away raindrops adhering to a windshield glass surface by pressing the wiper blade against a surface to be wiped such as a windshield glass of a vehicle and reciprocally rotating the wiper blade (wiper arm & wiper arm & A retractable wiper (so-called conshield wiper) that can store a blade in a hood is known (Japanese Patent Laid-Open Nos. 62-299452 and 60-15).
7945, JP-A-59-53255, JP-A-3-2
31056, JP-A-2-171366, etc.).

In some of such retractable wipers, a deterioration preventing mechanism for preventing deterioration of the blade rubber of the wiper blade over time is also provided.
There are various types of rubber deterioration prevention mechanisms, such as a mechanism that separates the blade rubber from the windshield glass surface at the retracted position of the wiper arm and blade (a so-called lift-up mechanism), and a wiper arm and blade stop position. A structure that reduces the arm pressure of the wiper arm (for example, Japanese Patent Laid-Open No. 61-125952).
No., Actual Kaihei 1-112157, Actual Kaihei 1-212525
No. 0, JP-A-3-176253, JP-A-2-2999.
No. 57, Japanese Utility Model Laid-Open No. 63-154372, etc.) are known.

Here, in the structure in which the blade rubber is separated from the windshield glass surface at the retracted position of the wiper arm & blade, a slider is provided on the wiper blade and a convex portion (lifter) is provided on the body side corresponding to the slider. The blade rubber of the wiper blade is separated from the windshield glass surface when the slider is mounted on the lifter when the wiper arm & blade are stored.

However, in the conventional rubber deterioration preventing mechanism having such a structure that the wiper blade is positively separated from the windshield glass surface, when the wiper blade or the wiper arm rattles, the slider smoothly moves to the lifter. Therefore, it is difficult to maintain the initial performance for a long period of time because it is required to have high precision in the dimensions of each part, such as being unable to ride on. There is also a drawback that abnormal noise is apt to occur when the slider rides on the lifter.

On the other hand, in the structure in which the arm pressure of the wiper arm is reduced at the stop position of the wiper arm and blade, a piston is provided in the vicinity of the pivot shaft, and when the wiper arm and blade are retracted, the piston presses the wiper arm to generate the arm pressure. Things to reduce,
There is one that reduces the arm pressure by changing the support position of the spring for urging the wiper arm and blade.

However, in this type of arm pressure reducing mechanism, dedicated parts such as a piston or a cylinder for changing the pressing force of the wiper blade or a specially shaped cam for changing the supporting position of the spring are indispensable. However, the arm pressure reducing mechanism itself has a complicated structure and a large shape, and the cost is high. Furthermore, when such an arm pressure reduction mechanism is installed side by side with a retractable wiper that can store the wiper arm and blade, a storage mechanism for storing the wiper arm and blade and a mechanism for reducing the arm pressure during storage are provided. Must be provided together (separately), which also increases the number of parts as a whole, complicates the structure, and further increases the weight and cost.

As described above, in the conventional retractable wipers equipped with the deterioration preventing mechanism for the blade rubber, each mechanism has the above-mentioned drawbacks, and a retractable wiper satisfying all of them has been demanded. ..

[0009]

In consideration of the above facts, the present invention can store the wiper blade and the wiper arm with a simple structure, and the blade rubber of the wiper blade is surely deteriorated during the storage with the simple structure. The purpose is to obtain a retractable wiper that can prevent

[0010]

A retractable wiper according to a first aspect of the present invention comprises a pivot shaft having a wiper arm for holding a wiper blade attached thereto, the pivot shaft being rotatably supported, and integrally fixed to the pivot shaft. A lever; and a rod having one end connected to the lever and the other end connected to a wiper driving motor, the driving force of the wiper driving motor is transmitted through the rod and the lever, and the pivot is provided. A retractable wiper that reciprocally rotates a shaft is characterized by including a moving unit that moves the pivot shaft in a direction inclined or orthogonal to a moving surface of the lever and the rod when the wiper is operated.

A retractable wiper according to a second aspect of the present invention comprises an arm head attached to a pivot shaft and reciprocally rotated together with the pivot shaft, one end of which is rotatably pivotally connected to the arm head and the other end of which is a wiper. A wiper arm to which a blade is attached, and one end of which is connected to the wiper arm and biases the wiper arm around the connection support shaft in a direction to rotate the wiper blade attached to the other end of the wiper arm to a surface to be wiped. The wiper drive motor includes an elastic member for pressing, a lever integrally fixed to the pivot shaft, and a rod having one end connected to the lever and the other end connected to the wiper drive motor. In the retractable wiper for transmitting the driving force of the pivot shaft through the rod and the lever to reciprocally rotate the pivot shaft. A moving means for moving the pivot shaft in a direction inclined or orthogonal to the moving surface of the lever and the rod when the wiper is operated, and the other end of the elastic member are locked and the locking position of the elastic member is set. A spring lever rotatably supported by the arm head so as to be displaceable by movement of the pivot shaft;
It is characterized by having.

[0012]

In the retractable wiper according to the first aspect of the present invention, during normal operation of the wiper, the driving force of the wiper driving motor is transmitted through the rod and the lever to reciprocally rotate the pivot shaft to reciprocate the wiper blade and the wiper arm. It is rotated to wipe the surface to be wiped.

On the other hand, when the wiper blade and the wiper arm are retracted, the wiper drive motor is stopped and the rod and lever are stopped, and the pivot shaft is moved by the moving means. Here, when this pivot shaft moves in a direction that is inclined or orthogonal to the moving surfaces of the lever and the rod when the wiper is actuated,
Since the length of the rod is restricted, the connecting position of the lever and the rod is substantially rotationally moved on the rotation surface of the pivot shaft. Therefore, the pivot shaft is substantially rotated according to the rotational movement amount of the connecting position of the lever and the rod, and thereby the wiper blade and the wiper arm are rotated. Therefore, by appropriately setting the moving amount of the pivot shaft by the moving means, that is, the rotational moving amount of the connecting position of the lever and the rod according to the storing moving amount of the wiper blade and the wiper arm, the wiper blade and the wiper arm are in the stored state. Can be Also, various wiper blades and wiper arms of different types can be applied.

In the retractable wiper according to the second aspect, during normal operation of the wiper, the wiper blade attached to the wiper arm is pressed by the elastic member against the windshield glass surface, and the wiper is driven in this state. The driving force of the motor is transmitted through the rod and the lever, the pivot shaft is reciprocally rotated, and the wiper blade is reciprocally rotated together with the wiper arm and the arm head to wipe the surface to be wiped.

On the other hand, when the wiper blade and the wiper arm are retracted, the wiper driving motor is stopped, the rod and the lever are stopped, and the pivot shaft is moved by the moving means. Here, when this pivot shaft moves in a direction that is inclined or orthogonal to the moving surfaces of the lever and the rod when the wiper is actuated,
Since the length of the rod is restricted, the connecting position of the lever and the rod is substantially rotationally moved on the rotation surface of the pivot shaft. Therefore, the pivot shaft is substantially rotated according to the rotational movement amount of the connecting position of the lever and the rod, and thereby the wiper blade and the wiper arm are rotated. Therefore, by appropriately setting the moving amount of the pivot shaft by the moving means, that is, the rotational moving amount of the connecting position of the lever and the rod according to the storing moving amount of the wiper blade and the wiper arm, the wiper blade and the wiper arm are in the stored state. Can be Also, various wiper blades and wiper arms of different types can be applied.

Further, in this case, when the pivot shaft is moved by the moving means, the spring lever is moved and the other end locking position of the elastic member is displaced. Therefore, the pressing force applied to the wiper blade by the elastic member changes. Therefore, in order to reduce the pressing force at the time of storing the wiper blade and the wiper arm, that is, to displace the locking position of the elastic member by the spring lever, each part of the spring lever and the like corresponding to the retracted position of the wiper blade and the wiper arm. By setting the dimension of, the arm pressure of the wiper arm can be reduced in the retracted state of the wiper blade and the wiper arm, and the deterioration of the wiper blade (blade rubber) can be prevented. Further, in this case, only in the retracted position of the wiper blade and the wiper arm (in other words, only when the moving means is operated), the locking position of the elastic member by the spring lever is displaced and the pressing force of the wiper blade is reduced. In the normal wiper operating state, the pressing force of the wiper blade does not decrease and the wiping performance does not decrease. Further, it is possible to reduce only the arm pressure at the stop position of the wiper blade and the wiper arm (corresponding to the storage position) by reducing or almost eliminating the retracted movement amount of the wiper blade and the wiper arm.

[0017]

FIG. 3 is a schematic perspective view showing the entire structure of a retractable wiper 10 for a vehicle according to a first embodiment of the present invention, and FIG. 4 shows a main part of the retractable wiper 10. The configuration is shown in front view.

The retractable wiper 10 basically comprises a right wiper 10A and a left wiper 10B having the same structure, and is of a so-called parallel interlocking type. The left and right wipers include a wiper arm 12A and a wiper blade 14A, and a wiper arm 12B and a wiper blade 14B, respectively, and the wiper blades 14A and 14B are reciprocally rotated together with the wiper arms 12A and 12B by a mechanism which will be described in detail later. Wipe off raindrops etc. adhering to the surface to be wiped.

Here, one wiper arm 12 is shown in FIG.
A sectional view of a base end portion (a peripheral portion of a rotation shaft) of A is shown. The base end of the other wiper arm 12B has the same structure.

At the base end of the wiper arm 12A,
A pivot shaft 16 is arranged. The pivot shaft 16 is held by an outer holder 18 and an inner holder 20 which constitute a moving means. The outer holder 18 is formed in a block shape and is fixed to the vehicle body 24 with screws 22. On the other hand, the outer shape of the inner holder 20 is formed in a substantially rectangular parallelepiped, and is arranged so as not to rotate with respect to the outer holder 18 and slidable only in the axial direction. Pivot shaft 16
Is coaxially attached to this inner holder 20 and C
The inner holder 20 is held by the ring 26.
Is supported so as to be rotatable relative to the shaft and prevented from moving in the axial direction. A screw portion 28 is formed on the outer peripheral side wall portion of the inner holder 20.

On the other hand, outside the inner holder 20 (inside the outer holder 18), a ring gear 30 constituting moving means is arranged. The ring gear 30 is formed in a substantially ring shape, and has a protrusion 32 formed in a middle portion.
Is positioned outside the guide protrusion 34 projecting from the outer holder 18, and is rotatably held with respect to the outer holder 18. A screw portion 36 is formed on the inner peripheral portion of the ring gear 30, and the screw portion 36 meshes with the screw portion 28 of the inner holder 20. Therefore, when the ring gear 30 rotates about the axis, the inner holder 20 slides along the axis. A gear portion 38 is formed on the outer peripheral portion of the ring gear 30. The gear portion 38 is a helical gear, and meshes with a worm gear 44 formed on a rotary shaft 42 of a motor 40 as shown in FIG.
Therefore, when the worm gear 44 is rotated by the motor 40, the ring gear 30 is rotated about the axis while being held by the outer holder 18.

As schematically shown in FIG. 2, a cam pattern 46 for detecting a rotational position and a contact lever 48 are provided on the lower surface of the ring gear 30.
The rotational position of can be detected. The motor 40 is rotated and stopped in the forward and reverse directions based on this rotational position detection signal.

A lever 50 is attached to the lower end of the pivot shaft 16 supported by the above-described structure in a state orthogonal to the axis of the pivot shaft 16. A connecting pin 52 is fixed to the tip of the lever 50,
Further, as shown in FIGS. 3 and 4, one end of a rod 54 is connected to the connecting pin 52. The other end of the rod 54 is connected to the link rod 58 of the wiper motor 56. Therefore, when the wiper motor 56 rotates, this rotational driving force is transmitted to the pivot shaft 16 via the rod 54 and the lever 50, whereby the pivot shaft 16 reciprocally rotates.

On the other hand, an arm head 60 is fixed to the upper end of the pivot shaft 16 by a nut 62. The arm head 60 is formed in a substantially box shape that opens downward, and the side wall portion 60A is fixed in a state of covering the pivot shaft 16. As shown in FIGS. 6 and 7, a retainer 64 is provided at the tip of the arm head 60.
Are rotatably connected by a shaft 66.

A spring lever 68 is attached to the arm head 60 near the shaft 66. The spring lever 68 is rotatably attached by a pin 70 fixed to the arm head 60, and has a tip portion bent and formed in a substantially L-shape and engageable with an upper end portion 18A of the outer holder 18. A pin 72 is fixed to an intermediate portion of the spring lever 68, and one end of a spring 76 as an elastic member is hooked via a hook 74. The other end of the spring 76 is hooked on a pin 78 fixed to the axial tip of the retainer 64. Therefore, the retainer 64 always receives the counterclockwise rotational force of FIGS. 6 and 7 about the shaft 66 by the spring 76, and the wiper blade 14A is pressed against the surface to be wiped by this rotational force. In this case, by rotating the spring lever 68 around the pin 70, the pin 7
The locking position of the spring 76 by 2 can be changed, whereby the arm pressure of the wiper arm 12A (wiper blade 14A) (in other words, the pressing force of the wiper blade 14A against the surface to be wiped) can be changed.

Spring lever 6 of arm head 60
The stopper pin 80 is provided at a position corresponding to the vicinity of the tip portion of 8
Is fixed, the movement of the spring lever 68 due to the pulling force of the spring 76 is restricted, and the tip end of the spring lever 68 is in contact with the upper end portion 18A of the outer holder 18 when the wiper is operating (the state where the arm pressure is not reduced). Try not to touch.

Next, the operation of this embodiment will be described. In the retractable wiper 10 (right wiper 10A) having the above configuration, normally,
A pressing force is applied to the wiper blade 14A by the spring 76 and the wiper blade 14A is pressed against the surface to be wiped. That is, in the normal state, as shown in FIG. 6, the spring lever 68 is in contact with the stopper pin 80, and the predetermined tension of the spring 76 is applied to the wiper blade 14A.

During normal operation of the retractable wiper 10 (right wiper 10A), the wiper motor 14 is operated while the wiper blade 14A is pressed against the surface to be wiped. When the wiper motor 56 is activated, the wiper motor 56
Is transmitted through the rod 54 and the lever 50, the pivot shaft 16 is reciprocally rotated, and the wiper blade 14A is reciprocally rotated together with the wiper arm 12A to wipe off raindrops and the like adhering to the surface to be wiped.

On the other hand, when the wiper blade 14A and the wiper arm 12A are stored, the wiper motor 56 is stopped and the rod 54 and the lever 50 are stopped. Then, the motor 40 is rotated.

The worm gear 4 is rotated by the rotation of the motor 40.
When 4 rotates, the ring gear 30 is rotated around the axis, so that the inner holder 20 meshed with the ring gear 30 slides along its axis.
Here, since the pivot shaft 16 is supported by the inner holder 20 in a state in which the pivot shaft 16 is relatively rotatable and is prevented from moving in the axial direction, the pivot shaft 16 is axially moved together with the pivot shaft 16 by the sliding movement of the inner holder 20 (see FIG. 5). It is moved in the direction of arrow A).

Furthermore, the moving direction (axial direction) of the pivot shaft 16 is the lever 5 when the wiper is operating.
0 and the direction in which the rod 54 is inclined or orthogonal to the moving surface of the rod 54, the connecting position of the lever 50 and the rod 54, that is, the connecting pin 52, as shown schematically in FIG. It substantially rotates and moves on the rotation surface (the surface orthogonal to the axis) (arrow B direction in FIG. 5). Therefore, the pivot shaft 16 is substantially rotated according to the rotational movement amount of the connecting position (connecting pin 52) between the lever 50 and the rod 54. As a result, the wiper arm 12A and the wiper blade 14A supported by the pivot shaft 16 are rotated (direction of arrow C in FIG. 5). When the wiper arm 12A and the wiper blade 14A are rotated by a predetermined amount, this is detected by the cam pattern 46 and the contact lever 48 provided on the ring gear 30, and the motor 40 is detected based on the rotation position detection signal.
Is stopped. As a result, the wiper arm 12A and the wiper blade 14A are in the retracted state.

As described above, the rotation of the ring gear 30 causes the lever 50 (connecting pin 52) to substantially rotate and the pivot shaft 16 to rotate, so that the wiper arm 12A and the wiper blade 14A can be put into the retracted state. Therefore, the movement amount of the pivot shaft 16 due to the rotation of the ring gear 30, that is, the lever 50 and the rod 5
The rotational movement amount of the connecting positions of 4 is determined by the wiper blade 1
Various wiper blades and wiper arms of different types can be applied by appropriately setting them according to the storage movement amount of the 4A and the wiper arm 12A.

Further, in this case, the rotation of the ring gear 30 causes the pivot shaft 1 together with the inner holder 20 to rotate.
When 6 is moved in the axial direction (the direction of arrow A in FIG. 5), that is, when the wiper arm 12A and the wiper blade 14A are in the retracted state, the pivot shaft 16 and the arm head 60 are moved in the axial direction of the pivot shaft 16. .. Therefore, the tip end portion of the spring lever 68 attached to the arm head 60 engages with the upper end portion 18A of the outer holder 18 and is pressed with the movement of the pivot shaft 16 (arm head 60). Therefore, as shown in FIG. 7, the spring lever 68 is pushed up and rotated around the pin 70, and the locking position of the spring 76 by the pin 72 is displaced to the side closer to the shaft 66. Therefore, the arm pressure of the wiper arm 12A (retainer 64) (in other words, the pressing force of the wiper blade 14A against the surface to be wiped) is reduced. As a result, the wiper blade 14
It is possible to prevent deterioration of A (blade rubber).

As described above, in the retractable wiper 10, the locking position of the spring 76 by the spring lever 68 is automatically changed as the pivot shaft 16 is moved to the retracted state, so that the wiper blade 14A (wiper arm 12).
The arm pressure in A) is reduced, and deterioration of the wiper blade 14A (blade rubber) can be prevented when the wiper blade 14A and the wiper arm 12A are stored. Therefore, in order to reduce the arm pressure when the wiper blade 14A and the wiper arm 12A are retracted, that is, to displace the locking position of the spring 76 by the spring lever 68, the wiper blade 14A and the wiper arm 12A are accommodated in the retracted position. By setting the dimensions of each part of the spring lever 68 and the like, various wiper blades and wiper arms of different models can be applied, and deterioration of the wiper blade 14A (blade rubber) can be prevented.

Further, in this case, only in the retracted position of the wiper blade 14A and the wiper arm 12A (in other words, the pivot shaft 1 by the rotation of the ring gear 30).
6 only), the locking position of the spring 76 by the spring lever 68 is displaced and the pressing force (arm pressure) of the wiper blade 14A decreases, so that the arm pressure of the wiper blade 14A is reduced in the normal wiper operating state. There is no decrease and the wiping performance does not decrease.

Next, a second embodiment of the present invention will be described. The same components as those in the first embodiment are basically assigned the same reference numerals as those in the first embodiment, and the description thereof is omitted.

FIG. 8 shows a retractable wiper 9 according to the second embodiment.
A cross-sectional view of the peripheral portion of the zero pivot shaft 16 is shown.

In the retractable wiper 90, the pivot shaft 16 is held by the inner holder 92. The inner holder 92 has its own axis a-a inclined with respect to the axis of the pivot shaft 16.
It is arranged so as to be slidable in the direction along −a, and holds the pivot shaft 16 in a state of being inclined with respect to its axis. Therefore, the rotation of the ring gear 30 causes the inner holder 92 to slide in the direction inclined with respect to the axis of the pivot shaft 16 (direction of arrow D in FIG. 8) (the direction of arrow D is the direction of axis aa of the inner holder 92). Same as).

In the retractable wiper 90 having the above-described structure, at the time of normal operation, the wiper blade 56 is operated while the wiper blade 14A is pressed against the surface to be wiped, similarly to the retractable wiper 10 according to the first embodiment. The driving force is transmitted via the rod 54 and the lever 50, the pivot shaft 16 is reciprocally rotated, and the wiper blade 14A is reciprocally rotated together with the wiper arm 12A.

On the other hand, when the wiper blade 14A and the wiper arm 12A are stored, the wiper motor 56 is stopped and the rod 54 and the lever 50 are stopped. Then, the motor 40 is rotated.

The worm gear 4 is rotated by the rotation of the motor 40.
When 4 rotates, the ring gear 30 rotates about the axis and the inner holder 92 slides along the axis aa. Here, since the pivot shaft 16 is held in the inner holder 92 in a state of being inclined with respect to its axis, the sliding movement of the inner holder 92 causes
The pivot shaft 16 has the axis aa of the inner holder 92.
Will be moved along. Therefore, the pivot shaft 16
The connecting position of the lever 50 and the rod 54 fixed to each other, that is, the connecting pin 52, substantially rotationally moves on the rotation surface (the surface orthogonal to the axis) of the pivot shaft 16 (direction of arrow E in FIG. 8). ). Therefore, as in the first embodiment, the pivot shaft 16 is substantially rotated according to the rotational movement amount of the connecting position (connecting pin 52) between the lever 50 and the rod 54. As a result, the wiper arm 12A and the wiper blade 14A supported by the pivot shaft 16 are rotated (in the direction of arrow F in FIG. 8), and the wiper arm 12A and the wiper blade 14A are in the retracted state.

As described above, also in the retractable wiper 90 according to the second embodiment, the rotation of the ring gear 30 substantially rotates the connecting pin 52 (lever 50) to rotate the pivot shaft 16 and the wiper arm 12A and the wiper arm. The blade 14A can be put in the retracted state.

Furthermore, in this case, the rotation of the ring gear 30 causes the pivot shaft 1 to move together with the inner holder 92.
When 6 is moved along the axis of the inner holder 92 (that is, when the wiper arm 12A and the wiper blade 14A are in the retracted state), the spring lever 68 is pushed up to engage the spring 76, as in the first embodiment. The stop position is changed, and the arm pressure of the wiper blade 14A is reduced. Thereby, deterioration of the wiper blade 14A (blade rubber) can be prevented. This second
Also in the embodiment, only in the retracted position of the wiper blade 14A and the wiper arm 12A (only when the pivot shaft 16 rotates due to the rotation of the ring gear 30), the locking position of the spring 76 by the spring lever 68 is displaced and the wiper blade 14A moves. Since the pressing force (arm pressure) decreases, the arm pressure of the wiper blade 14A does not decrease and the wiping performance does not decrease in the normal wiper operating state.

Further, in the second embodiment, the inner holder 92 has its own axis inclined and the outer holder 9 is
4 and holds the pivot shaft 16 in an inclined state with respect to its axis.
6 is a configuration in which the pivot shaft 16 slides in a direction inclining with respect to the axis line, in other words, the pivot shaft 16 is moved in a direction inclining along the axis line of the inner holder 92. Even if the lever 50 and the rod 54 are in a state of being orthogonal to the moving surface of the lever 50 during normal wiper operation, the lever 5
0 can be substantially rotationally moved on the rotation surface of the pivot shaft 16 (the surface orthogonal to the axis of the pivot shaft 16). Therefore, the shape of the inner holder 92,
That is, by appropriately setting the inclination degree when holding the pivot shaft 16 (the inclination degree between the axis of the inner holder 92 and the axis of the pivot shaft 16), the rotational movement amount of the pivot shaft 16 during storage can be easily increased or decreased. It is possible to expand the range of application.

In the above description, the retractable wiper 1 is used.
Although the right wiper 10A of 0 and 90 has been mainly described, the wiper blade 1 has the same operation in the left wiper 10B.
4B and the wiper arm 12B are moved to the stored state, and the arm pressure is reduced in the stored state to prevent deterioration of the wiper blade.

[0046]

As described above, the retractable wiper according to the present invention can store the wiper blade and the wiper arm with a simple structure, and the blade rubber of the wiper blade is surely deteriorated during the storage with the simple structure. It has the excellent effect of being able to prevent.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a peripheral portion of a pivot shaft of a retractable wiper according to a first exemplary embodiment of the present invention.

FIG. 2 is a bottom view showing a cam pattern of gears arranged around a pivot shaft and an arrangement relationship of worm gears.

FIG. 3 is a schematic perspective view showing the overall configuration of the retractable wiper according to the first embodiment of the present invention.

FIG. 4 is a front view showing a configuration of a main part of the retractable wiper according to the first exemplary embodiment of the present invention.

FIG. 5 is a schematic configuration diagram showing a correspondence relationship between a moving state of the pivot shaft and a rotating state of the wiper arm and the wiper blade in the retractable wiper according to the first exemplary embodiment of the present invention.

FIG. 6 is a cross-sectional view of a pivot shaft peripheral portion showing a state in which a spring is normally retained in the retractable wiper according to the first exemplary embodiment of the present invention.

FIG. 7 is a sectional view of a pivot shaft peripheral portion corresponding to FIG. 6, showing a spring locked state of the retractable wiper according to the first exemplary embodiment of the present invention during storage.

8 is a schematic configuration corresponding to FIG. 5 showing a configuration of a pivot shaft peripheral portion and a correspondence relationship between a moving state of the pivot shaft and a rotating state of a wiper arm and a wiper blade in a retractable wiper according to a second embodiment of the present invention. It is a figure.

[Explanation of symbols]

 10 retractable wiper 10A right wiper 10B left wiper 12A wiper arm 12B wiper arm 14A wiper blade 14B wiper blade 16 pivot shaft 18 outer holder (moving means) 20 inner holder (moving means) 30 ring gear (moving means) 40 motor (moving means) 50 lever 54 Rod 56 Wiper motor 60 Arm head 68 Spring lever 76 Spring (elastic member) 90 Retractable wiper 92 Inner holder (moving means) 94 Outer holder (moving means)

Claims (2)

[Claims] 1. A pivot shaft to which a wiper arm for holding a wiper blade is attached and is rotatably supported, a lever integrally fixed to the pivot shaft, one end of which is connected to the lever, and the other end of which is a wiper. And a rod connected to a drive motor, wherein the drive force of the wiper drive motor is transmitted via the rod and the lever to reciprocally rotate the pivot shaft. And a moving means for moving the pivot shaft in a direction inclined or orthogonal to the moving surface of the rod, the retractable wiper. 2. An arm head attached to a pivot shaft and reciprocally rotating together with the pivot shaft; a wiper arm having one end rotatably pivotally connected to the arm head and a wiper blade attached to the other end; An elastic member that is connected to the wiper arm and urges the wiper arm around the connection support shaft in a rotating direction to press the wiper blade attached to the other end of the wiper arm toward the surface to be wiped, and the pivot shaft. A lever fixed integrally, and a rod having one end connected to the lever and the other end connected to a wiper drive motor,
A retractable wiper for transmitting the driving force of the wiper driving motor through the rod and the lever to reciprocally rotate the pivot shaft, wherein the lever or the rod is inclined with respect to the moving surface during the wiper operation. Moving means for moving the pivot shaft in a direction orthogonal to each other, locking the other end of the elastic member, and enabling the arm head to rotate so that the locking position of the elastic member can be displaced by the movement of the pivot shaft. A retractable wiper comprising: a supported spring lever.