Windscreen-wiper drive

专利摘要:
The invention comprises a drive mechanism, drive arm 16, coupling arm 28 and driven arm 30, wherein the first end of the drive arm 16 is connected to the drive mechanism such that the drive arm is driven by a drive axis ( Pivotable about A), the first end of the coupling arm 28 being connected to the second end of the drive arm by a coupling joint 18 having a defined axis of rotation K, said couple A second end of a ring arm 28 is connected to the wiper blade 12, and the driven arm 30 is connected to the windshield wiper drive. It is an object of the present invention to improve the windshield wiper drive of the above manner so that the inclination angle of the wiper blade can be adjusted relative to the glass in the switching position. In order to achieve the above object, the rotation axis K of the coupling joint and the drive axis A of the drive arm are not parallel to each other.
公开号:KR20020029327A
申请号:KR1020017014496
申请日:2001-03-10
公开日:2002-04-18
发明作者:짐머요아힘
申请人:클라우스 포스, 게오르그 뮐러；로베르트 보쉬 게엠베하；
IPC主号:

专利说明:

Windshield Wiper Drives {Windscreen-wiper drive}
[2] The drive arm, coupling arm and driven arm form a four-bar mechanism. The mechanism functions to make the upward movement, thus obtaining a larger washing range. An additional function of this four-bar mechanism is to adjust the tilt angle of the wiper blades relative to the glass to be cleaned.
[3] The longitudinal symmetry plane of the wiper blades perpendicular to the plane of the glass is always aligned, assuming that the entire axis of rotation of the four-bar mechanism is parallel to each other and the wiper blades abut flat glass perpendicular to the axis of rotation. This may cause the wiper blade to rattle against the glass at the transitional position of the wiper blades, ie at two extreme positions, from one direction of movement to the other because the wiper lip of the untilted wiper blade This is because it must be switched from the curved position to another position. This problem may be sharpened when tolerances or the like cause misalignment of the wiper blades. Basically, the stronger the tilt in the new direction of movement when the wiper blade reaches its end position, the easier and less noise the wiper lip of the wiper blade is shifted. In order to obtain this preferred tilt angle, also called normal error, it is known to align the axis of rotation of the four-bar mechanism with respect to the glass to be cleaned. Due to this, a small inclination angle can be obtained at each switching position of the wiper blades. However, a large inclined position of the drive axis is not possible because a collision between the drive arm or the coupling arm and the vehicle glass or engine bonnet can be caused.
[1] The present invention includes a drive mechanism, a drive arm, a coupling arm and a driven arm, the first end of the drive arm being connected to a drive mechanism such that the drive arm is pivotable about a drive axis, and the first of the coupling arm An end connected to a second end of the drive arm by a coupling joint having a defined axis of rotation, a second end of the coupling arm connected to a wiper blade, and the driven arm connected to a coupling arm It relates to a windshield wiper drive.
[8] 1 is a perspective view of a windshield wire drive unit assembled to a vehicle;
[9] 2 is a cross sectional view of a wiper blade lying on the windshield;
[10] 3 is a perspective view of the wiper drive according to the invention in a first position;
[11] 4 is an enlarged perspective view of a drive arm used in the wiper drive of FIG.
[12] 5 is a perspective view of the wiper drive of FIG. 3 in a second position;
[13] FIG. 6 is an enlarged perspective view of a drive arm used in the wiper drive of FIG. 5; FIG.
[14] 7 is a bottom perspective view of the coupling arm used in the wiper drive of FIG.
[15] 8 is a top perspective view of the coupling arm of FIG.
[16] 9 is a perspective view of a driven arm of the wire drive shown in FIG. 3.
[17] 10 is a cross sectional view of a joint between a coupling arm and a driven arm;
[18] 11 is a cross-sectional view of a joint of a drive arm and a coupling arm.
[19] 12 is a diagram showing the angle of inclination of the wiper blades relative to the glass in the flat glass.
[20] 13 is a diagram of the angle of inclination in a glass bent in three dimensions.
[4] It is an object of the present invention to enable a large tilt angle of the wiper blades relative to the glass in the two switching position regions in the wiper drive of the type described above.
[5] The wiper drive having the features of claim 1 has the advantage that the tilt angle of the wiper blade can be controlled as intended at each switching position in a small space and by a simple mechanical method. The inclined position transmitted to the coupling arm and thus the wiper blade is given only by the inclined position of the axis of rotation of the coupling joint with respect to the drive axis of the drive arm. The drive arm also pivots in only one plane, preventing collisions with the vehicle glass or engine bonnet. By aligning the axis of rotation of the coupling joint with respect to the virtual neutral position parallel to the drive axis, the position of the wiper drive with the largest drive angle and the inclination angle size of the wiper blade can be set.
[6] Preferred embodiments of the invention are set out in the claims subclaims.
[7] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.
[21] 1 shows a windshield wiper drive 10. The drive is used to adjust the wiper blade 12 against the glass 14. The wiper blades 12 should have different angles of inclination with respect to the glass depending on their position on the glass. This is represented in FIG. 2 by the angle α given between the longitudinal plane of symmetry L and the vertical line N on the surface of the glass 14. The larger the inclination angle α, also referred to as the normal error, the more easily the wiper lip 13 formed to be inclined to the wiper blade is inclined from one position to another. The transition is made at the transition position of the wiper blade, ie at each extreme position at one edge and the other edge of the glass to be cleaned. The inclination angle is set so that the wiper blades are tilted forward in the new direction of movement. Thus, the tilt of the wiper blade in FIG. 2 is made for movement in the direction of the arrow immediately after reaching the switching position and immediately after the wiper lip 13 is switched to the new position.
[22] The inclination angle is obtained by the wiper drive shown in detail in Figs. The wiper drive generally has an elongated drive arm 16. By connecting the first end (not shown) of the drive arm 16 to the wiper motor, the drive arm can make a vibrating movement about the drive axis A. FIG. At the second end of the drive arm 16 a coupling joint 18 is provided. The coupling joint 18 has a defined axis of rotation K. Here, the coupling joint is formed by the connection of the bearing journal 20 and the bearing bush 22 (see FIG. 11).
[23] The axis of rotation K of the coupling joint is inclined by an angle β with respect to the virtual axis P parallel to the drive axis A of the drive arm. In FIGS. 4 and 6, the axis of rotation K is spaced so that the segment of the axis of rotation K overlying the drive arm 16 has a larger distance from the drive axis A than the segment underneath the drive arm 16. Aligned with the drive axis (A). In other words, the axis of rotation K of the coupling joint is on the side of the drive arm 16 facing the wiper blade 12 in the plane defined by the drive axis A and the center point of the coupling joint. There is a gap with the smaller drive axis A on the opposite side. As a starting point for the magnitude of the angle β, a value of 3 ° to 10 ° can be used.
[24] The coupling joint 18 is formed in the coupling joint part 24. The coupling joint part is here connected to the coupling arm 28 via a pivot joint 26, indicated by its central axis. For convenience, the coupling joint component 24 is considered as part of the coupling arm 28 in the following. In order to avoid a large tilting moment being applied on the coupling joint 18, the spacing between the rotational axis K of the coupling joint and the pivoting joint 26 of the coupling arm should be as small as possible.
[25] The coupling arm 28 is connected to the driven arm 30 via a ball joint 32. The ball joint 32 consists of a ball socket 34 formed on the coupling arm 28, and a joint ball 36 formed on the end of the driven arm 30.
[26] The wiper arm 38 shown in FIG. 3 is connected to the coupling arm 28. The wiper arm 38 extends with the wiper blade 12. A conventional pivot joint 40 is provided between the coupling arm 28 and the wire arm 38. The pivot joint 40 allows the pivoting movement of the coupling arm 28 to be transferred to the wiper blade 12, while at the same time the wiper blade is pressed against the glass 14 by the wiper arm 38 and a spring. Can be.
[27] The driven arm 30 has its end opposite to the ball joint 32 connected to the blind bearing shaft. The shaft is indicated by its axis of rotation (B). The axis of rotation B of the blind bearing shaft is parallel to the drive axis A. FIG.
[28] In the illustrated embodiment the drive arm, coupling arm, coupling joint part and driven arm are embodied as a sheet bending part. However, each of the components or many of the components may be embodied as die casting components or other suitable configurations may be used.
[29] The wiper drive described above operates in the following manner:
[30] The wiper blades move over the glass in a known manner. That is, the oscillating swing movement about the drive axis A is given to the drive arm 16. If the wiper blade is in the shifting position shown in FIG. 1 during the movement, i.e., carrying out the direction of movement indicated by arrow I in FIG. 1, the wiper blade is in the direction of arrow II of FIG. Inclined to This results from the angle β at which the rotational axis K of the coupling joint 18 is pivoted outward. The rotation of the coupling joint part 24 resulting from the inclination is transmitted to the wiper blade via the pivot joint 26 and the pivot joint 40; The ball joint 32 between the coupling arm 28 and the driven arm 30 does not interfere with the tilting motion.
[31] When the wiper blade is placed in the opposite switching position, that is, when the direction of movement indicated by arrow III in Fig. 1 is changed, the wiper drive is placed in the position shown in Fig. 5. Even in this position, the angle β at which the rotational axis K of the coupling joint is inclined outward causes the wiper blade to be inclined with respect to the vertical alignment in the direction of arrow IV in FIG. 5.
[32] FIG. 12 shows the tilt angle α of the wiper blade when the drive arm 16 is rotated by the drive angle φ about the drive axis A when the glass is flat. The tilt angle of the wiper drive is shown as I when the drive axis of the drive arm is perpendicular to the plane of the glass. From there the inclination angle of the wiper blades does not vary during the pivoting movement of the drive arm. The inclination angle of the wiper drive device according to the present invention in which the parking position of the wiper blade, that is, the inclination angle at the position shown in FIG. 1 is maximum, is indicated by II. Due to the structural proportions detailed later, the inclination angle is approximately zero at the opposite switching position corresponding to the turning of the drive arm of about 120 °. The curve of the wiper drive according to the invention, which is moved by the section Δs relative to the curve II, is shown as III. The section is selected such that the same angle of inclination α _Umkehr is given at the two transition positions of the wiper blades. If the curve is not shifted, a large angle of inclination is obtained at one of the two transition positions, but an angle of inclination of approximately 0 ° is obtained at the other transition positions, since the two maximum values of the angle of inclination are always 90 for structural reasons. This is because the difference is as much as the driving angle of °.
[33] FIG. 13 shows a curve as the wiper moves over the glass bent in three dimensions as in the actual case. As can be seen, the best inclination angle is obtained with a sufficient inclination angle given by the wiper drive device according to the invention to a sufficient magnitude and well aligned with respect to the drive angle φ.
[34] As can be seen by comparing FIGS. 3 and 5, the drive arm 16 is pivoted by an angle of at least about 90 ° to move the wiper blade from one shift position to another. Depending on the configuration, the drive angle is between 100 and 130 degrees. In each of the two extreme positions the coupling arm 28 extends approximately perpendicular to the drive arm 16. Assuming an angle of exactly 90 ° is set between the coupling arm and the drive arm at each of the two switching positions, between the rotation axis K of the coupling joint and the virtual axis P parallel to the drive axis A. The maximum angle of inclination at the switching position is obtained when the surface formed in the extension of the plane defined by the drive axis and the virtual axis P. In other words, the axis of rotation K extends in the longitudinal direction of the drive arm and is pivoted outward and is not substantially inclined with respect to the longitudinal axis. In contrast, considering that the angle between the coupling arm and the drive arm is not actually 90 ° at two transition positions, i.e. when the magnitude of the inclination angle is particularly important, the rotation axis K is in relation to the virtual axis P. The pivoting direction has a deviation from the longitudinal extension of the drive arm. Since a change in the alignment of the coupling joint rotation axis K actually affects the inclination angle of the wiper blade at two transition positions, a compromise must be found.
[35] Instead of the foregoing embodiments of different joints, other types of joints are possible. However, the coupling joint 18 should be able to cause a pivoting motion about its longitudinal axis of the coupling arm 28 and the angular compensation between the drive arm 16 and the coupling arm 28 should be possible. It is important. Instead of the aforementioned connection between the coupling arm and the drive arm in the form of two pivotal joints connected in line, a cardan joint can be used. Cardan joints may be used in place of the aforementioned ball joints between the coupling arm and the driven arm. The cardan joint may be replaced by two pivoting joints perpendicular to each other.

权利要求:
Claims (10)
[1" claim-type="Currently amended] A drive mechanism, a drive arm 16, a coupling arm 28, and a driven arm 30, the first end of the drive arm 16 being connected to a drive mechanism, thereby driving the drive axis A; Pivotally pivotable, the first end of the coupling arm 28 being connected to the second end of the drive arm by a coupling joint 18 having a defined rotational axis K, In the windshield wiper drive, in which the second end of 28 is connected to the wiper blade 12 and the driven arm 30 is connected to the coupling arm.
A wiper drive, characterized in that the rotation axis (K) of the coupling joint and the drive axis (A) of the drive arm are not parallel to each other.
[2" claim-type="Currently amended] The method of claim 1,
The axis of rotation K of the coupling joint is more on the opposite side on the side of the drive arm 16 facing the wiper blade 12 in the plane defined by the drive axis A and the center point of the coupling joint. A wiper drive having a distance from the small drive axis A.
[3" claim-type="Currently amended] The method of claim 2,
And the rotation axis (K) of the coupling joint lies in the plane.
[4" claim-type="Currently amended] The method of claim 2 or 3,
The wiper drive of the coupling joint lies in the plane and is inclined by an angle of 3 ° to 10 ° with respect to a virtual axis parallel to the drive axis (A).
[5" claim-type="Currently amended] The method according to any one of claims 1 to 4,
The coupling joint is a first pivot joint 18, which pivot joint 18 is connected to the coupling arm 28 by a second pivot joint 26, and pivot of the second pivot joint 26. And the axis is perpendicular to the pivot axis of the first pivot joint.
[6" claim-type="Currently amended] The method according to any one of claims 1 to 4,
And the coupling joint is a cardan joint.
[7" claim-type="Currently amended] The method according to any one of claims 1 to 6,
The coupling arm (28) is a wiper drive, characterized in that connected to the driven arm (30) via a cardan joint.
[8" claim-type="Currently amended] The method according to any one of claims 1 to 6,
And the coupling arm (28) is connected to the driven arm (30) via a ball joint (32).
[9" claim-type="Currently amended] The method according to any one of claims 1 to 6,
And the coupling arm is connected to the driven arm via two pivoting joints.
[10" claim-type="Currently amended] The method according to any one of claims 1 to 9,
The driven arm (30) is connected to a blind bearing shaft (B), wherein the shaft is parallel to the drive axis (A).

类似技术:

---

公开号 | 公开日 | 专利标题

---

US8347450B2|2013-01-08|Wiper blade

---

JP4038178B2|2008-01-23|Wiper blade

---

JP4489894B2|2010-06-23|Adjustable assembly and optical mount

---

KR100867563B1|2008-11-10|Wiper device especially for the panes of motor vehicles

---

EP0369672B1|1992-09-30|Windshield wiper

---

JP3853645B2|2006-12-06|Robot arm

---

KR101110394B1|2012-02-24|Hinge actuator

---

ES2362305T3|2011-07-01|Windshield arm.

---

EP1517818B1|2009-08-12|Fastening element for the wiper arm of a vehicle windshield wiper

---

KR20080112425A|2008-12-24|A windscreen wiper device

---

EP1943131B1|2013-09-25|Windshield wiping device and method for the operation thereof

---

US6964080B2|2005-11-15|Wiper arm for a windscreen wiper

---

US7257856B2|2007-08-21|Windscreen wiper device, in particular for a motor vehicle

---

ES2441360T3|2014-02-04|Binding device comprising turning limit means

---

US7000283B2|2006-02-21|Wiper drive

---

JP2004519387A|2004-07-02|Wiper arm, especially for automotive glazing systems

---

US7251852B2|2007-08-07|Wiper system

---

EP0182123A2|1986-05-28|Automobile window wiping device

---

AU2009324257B2|2011-07-14|Wiper apparatus

---

US20060250100A1|2006-11-09|Drive arrangement for a wiper device for windows of motor vehicles

---

RU2259289C2|2005-08-27|Articulated four-link drive mechanism of windshield wiper blade carrying arm

---

KR101969616B1|2019-04-16|Windscreen wiper arm

---

JP6623763B2|2019-12-25|Vehicle wiper device

---

JP2001513053A|2001-08-28|Wiper device for automotive glass with a wiper arm guided and reciprocally driven in an automobile

---

EP0645287B1|1997-12-10|Windscreen-wiper system

同族专利:

---

公开号 | 公开日

---

US6568022B1|2003-05-27|

---

CN1188305C|2005-02-09|

---

ES2247089T3|2006-03-01|

---

WO2001068424A1|2001-09-20|

---

JP2003526570A|2003-09-09|

---

CN1364124A|2002-08-14|

---

DE50107408D1|2005-10-20|

---

KR100729549B1|2007-06-19|

---

DE10013190A1|2001-09-27|

---

EP1181177B1|2005-09-14|

---

EP1181177A1|2002-02-27|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

法律状态:
2000-03-17|Priority to DE10013190.5

---

2000-03-17|Priority to DE10013190A

---

2001-03-10|Application filed by 클라우스 포스, 게오르그 뮐러, 로베르트 보쉬 게엠베하

---

2002-04-18|Publication of KR20020029327A

---

2007-06-19|Application granted

---

2007-06-19|Publication of KR100729549B1

优先权:

---

申请号 | 申请日 | 专利标题

---

DE10013190.5|2000-03-17|

---

DE10013190A|DE10013190A1|2000-03-17|2000-03-17|Windscreen wiper drive; has drive arm connected to drive mechanism and to coupling arm connected to windscreen wiper blade where coupling joint and drive arm axis are not parallel|