JP5351324B2 - Wiper device - Google Patents

Description

  The present invention relates to a wiper device fixed to a vehicle body.

  As a wiper device fixed to a vehicle body such as an automobile, two pivot holders that pivotably support the pivot shaft and are respectively fixed to the vehicle body side, a hollow frame that is made of a hollow material and connects the pivot holders to each other, Some include a drive source fixed to the hollow frame and a link rod that transmits a drive force of the drive source to a pivot shaft (see, for example, Patent Document 1). A wiper arm is fixed to the tip of the pivot shaft, and the raindrops on the surface of the windshield are wiped off by a wiper blade connected to the wiper arm.

  In such a wiper device, the pivot holder that is to be manufactured with a molding tool having a complicated shape is made as small as possible to make the molding device small-scale, while using a hollow frame made of a hollow material, it is small, lightweight, and inexpensive. Can be. That is, in a module type wiper device, if one pivot holder and the motor bracket part to which the wiper motor is fixed are manufactured integrally with a molding die, the molding die and the molding device become very large and expensive. However, in Patent Document 1, this can be avoided.

Japanese Patent No. 3215671

  By the way, in recent years, from the viewpoint of further shock absorption etc., a solid solid drive source is arranged on the inner side (back) of the vehicle body away from the hood of the car and in the base end direction of the pivot shaft, that is, below the windshield. There is a request to do. Therefore, in such an aspect, for example, an optimum structure considering a drive mechanism is desired.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wiper having an optimal structure in consideration of the drive mechanism while disposing the drive source in the proximal direction of the pivot shaft with respect to the pivot holder. To provide an apparatus.

  According to the first aspect of the present invention, two pivot holders that pivotably support a pivot shaft to which a wiper arm is fixed at the front end and are respectively fixed to the vehicle body side, and are made of a hollow material and connect the pivot holders to each other. A wiper device comprising a hollow frame, a drive source fixed to the hollow frame, and a link rod for transmitting a drive force of the drive source to the pivot shaft, wherein the pivot holder is fixed to the hollow frame. A pair of connecting and fixing portions; and a driving source fixing portion that connects and bends the pair of connecting and fixing portions and is arranged in the proximal direction of the pivot shaft to fix the driving source. The two bent portions bent in a substantially crank shape on the one pivot holder side from the fixed portion are bent at the bending axis centers that are not parallel to each other. And effect.

  According to this configuration, the hollow frame is arranged in the proximal direction of the pivot shaft by connecting and bending the pair of connection fixing portions to which the pivot holder is fixed and the pair of connection fixing portions, and the drive source is fixed. The drive source is arranged in the base end direction of the pivot shaft, that is, in the inner part of the vehicle body (for example, below the windshield spaced apart from the bonnet) without using a bracket or the like. Can do.

  Moreover, since the two bent portions bent in a substantially crank shape on the one pivot holder side from the drive source fixing portion are bent at the respective bending axis centers that are not parallel to each other, the attitude of the drive source fixing portion with respect to the connection fixing portion, As a result, the attitude of the drive source can be changed with a high degree of freedom.

  According to a second aspect of the present invention, in the wiper device according to the first aspect, the two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion are bending axes that are not parallel to each other. The gist is that each is bent at the center.

  According to this configuration, the two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion are also bent at the respective bending axis centers that are not parallel to each other. By setting the distance between the two bent portions of the hollow frame to be long, the drive source can be easily arranged and set sufficiently deep inside the vehicle body in the base end direction of the pivot shaft in the mounting space matched to the vehicle. In addition, the attitude of the driving source fixing part, and consequently the attitude of the driving source, can be adjusted to an appropriate attitude according to the mounting space of the vehicle, depending on how the bending part is bent.

The invention according to claim 3 is the wiper device according to claim 1 or 2, wherein the drive source is fixed to the drive source fixing portion and supported by the vehicle body.
According to this configuration, the drive source is fixed to the drive source fixing portion and supported by the support portion of the vehicle body, and is bent in a substantially crank shape on the one pivot holder side from the drive source fixing portion. The two bent portions are bent at the centers of the bending axes that are not parallel to each other, so that the drive source can be easily arranged according to the position of the support portion of the vehicle body. That is, when the position where the two pivot holders are fixed first and the position where the drive source is supported is set on the vehicle body, the two bent portions are bent at the centers of the bending axes that are not parallel to each other. For example, the wiper device can be disposed by easily changing the shape and posture of the drive source fixing portion, and thus the posture of the drive source, without requiring significant change of other members.

  According to a fourth aspect of the present invention, in the wiper device according to any one of the first to third aspects, the connection fixing portion is fixed by caulking by inserting an attachment shaft of the pivot holder, The gist of the pair of connecting and fixing portions is that the shaft centers into which the mounting shafts are inserted are arranged on a straight line.

  According to the same configuration, the pair of connecting and fixing portions are arranged in a straight line with the shaft center into which the mounting shaft of the pivot holder is inserted. For example, the pair of caulking jigs of the caulking device in the caulking and fixing process In a simple configuration arranged in parallel on one line, in other words, it is not necessary to preset a twist or a step in a pair of caulking jigs, and can be caulked easily at the same time. Further, for example, even if the relative inclination of the two pivot shafts differs depending on the type of vehicle to be mounted (the curvature of the windshield), the axis of the pair of connecting and fixing portions is determined to be in a straight line. Therefore, the caulking device is common and can be caulked and fixed with a common setting (because it does not correspond by changing the axis of the pair of connecting and fixing portions). Further, for example, even when the length and shape of the driving source fixing portion between the connecting and fixing portions is changed according to the vehicle type on which the driving fixing portion is mounted, the positioning is completed only by moving the pair of caulking jigs along the straight line. Therefore, it becomes easy to set the caulking device for variations. From these, for example, the caulking device can be made simple and inexpensive.

  According to a fifth aspect of the present invention, in the wiper device according to any one of the first to fourth aspects, the two bent portions are bent in a substantially crank shape on the one pivot holder side from the drive source fixing portion. The gist is that the bending angle is set smaller than the two bent portions bent in a substantially crank shape on the other pivot holder side of the drive source fixing portion.

  According to this configuration, the two bent portions bent in a substantially crank shape on one pivot holder side from the drive source fixing portion are two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion. Since the bending angle is set smaller than that of the bent portion, the rigidity of the bent portion on the one pivot holder side can be increased.

  ADVANTAGE OF THE INVENTION According to this invention, the wiper apparatus of a structure superior in manufacture can be provided, arrange | positioning a drive source with respect to a pivot holder in the base end direction of a pivot shaft.

The top view of the wiper apparatus in this Embodiment. The front view of the wiper apparatus in this Embodiment. The bottom view of the wiper apparatus in this Embodiment. (A) The top view of the hollow frame in this Embodiment (b) The front view of the hollow frame in this Embodiment. The top view for demonstrating the wiper apparatus in this Embodiment.

  Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS. FIG. 1 is a plan view of the wiper device according to the present embodiment, FIG. 2 is a front view of the wiper device, and FIG. 3 is a bottom view of the wiper device.

  As shown in FIGS. 1 to 3, the wiper device includes two pivot holders 11 and 12, a hollow frame 13, a motor 14 as a drive source, a drive source side link rod 15 and a synchronous link rod 16. .

  The pivot holders 11 and 12 are cast products made of an aluminum alloy, and include cylindrical pivot support portions 11a and 12a, vehicle body fixing portions 11b and 12b extending in a direction substantially orthogonal to the pivot support portions 11a and 12a, and a vehicle body. Mounting shafts 11c, 12c extending in the direction orthogonal to the axes of the pivot support portions 11a, 12a at different positions from the fixed portions 11b, 12b, and a water receiver extending in a dish shape radially outward of the pivot support portions 11a, 12a Receiving trays 11e and 12e. Note that the tray portions 11e and 12e may be configured as separate resin parts and attached and fixed to the pivot support portions 11a and 12a. Pivot shafts 21 and 22 are inserted into the pivot support portions 11a and 12a and are rotatably supported. A wiper arm (not shown) is fixed to the distal ends of the pivot shafts 21 and 22, and a wiper blade is supported on the distal end of the wiper arm. Further, pivot levers 23 and 24 are fixed to the base ends of the pivot shafts 21 and 22 so as to swing (rotate) integrally with the pivot shafts 21 and 22. Anti-vibration rubbers 19 and 20 are attached to the ends of the vehicle body fixing portions 11b and 12b, and the vehicle body fixing portions 11b and 12b are attached to the vehicle body (its mounting brackets) (not shown) with bolts (not shown) through the anti-vibration rubbers 19 and 20. ). The mounting shafts 11c and 12c are formed in a substantially circular solid cross section, and a plurality of caulking concave portions 11d and 12d are formed on the outer peripheral surface thereof.

  The hollow frame 13 is made of a hollow material (pipe) made of a zinc steel plate and connects the two pivot holders 11 and 12 to each other. Specifically, the hollow frame 13 connects the pair of connection fixing portions 13a and 13b to which the inserted mounting shafts 11c and 12c are fixed by caulking, and the pair of connection fixing portions 13a and 13b, and is bent, thereby bending the hollow frame 13. And a drive source fixing portion 13c disposed in the base end direction of the pivot shafts 21 and 22 (in FIG. 1, the back direction in FIG. 1 and the downward direction in FIG. 2). Note that the two pivot holders 11 and 12 of the present embodiment are fixed to the hollow frame 13, and the two pivot shafts 21 and 22 (the axis P1 thereof) according to the curvature of the windshield of the vehicle type to be mounted. , P2 (see FIG. 2)) is not parallel but is set slightly apart toward the tip. In addition, the drive source fixing portion 13c of the present embodiment is crushed to be non-hollow, and the cross section in the orthogonal direction of the longitudinal axis L2 is substantially U-shaped. Is formed with a pair of mounting holes 13e (see FIG. 4). The motor 14 is fixed to the drive source fixing portion 13c (intermediate plane portion 13d).

  The motor 14 includes a motor main body 14a and a gear portion 14b, and a pair of mounting feet 14d (see FIG. 1) corresponding to the mounting holes 13e (see FIG. 4) is formed in the housing 14c of the gear portion 14b. . The mounting leg 14d of the motor 14 is placed on the intermediate plane part 13d of the drive source fixing part 13c, and in this state, the bolt 14 (see FIG. 2) that penetrates the mounting hole 13e (see FIG. 4). It is fastened and fixed to the drive source fixing part 13c (intermediate plane part 13d). Further, in the housing 14c of the gear portion 14b, a support rubber member 14e (see FIG. 1) is attached to a support pin (not shown) formed integrally with the housing 14c on the opposite side of the mounting foot 14d. The member 14e is fitted and supported in a fitting hole as a support portion (not shown) of the vehicle body. In other words, the integrated body composed of the two pivot holders 11 and 12, the hollow frame 13 and the motor 14 of the present embodiment is composed of the two pivot holders 11 and 12 (vehicle body fixing portions 11b and 12b) and the motor 14 (support rubber member 14e). ) Are supported (3 points) with respect to the vehicle body.

  Further, the output shaft 14f of the motor 14 is set so as to protrude in substantially the same direction as the pivot shafts 21 and 22 (the front direction in FIG. 1 and the upward direction in FIG. 2). A crank arm 14g that rotates integrally with the output shaft 14f is fixed to the output shaft 14f.

  The proximal end of the drive source side link rod 15 is drivingly connected to the distal end of the crank arm 14g, and one end (rightward in FIGS. 1 and 2) is connected to the distal end of the drive source side link rod 15. The one pivot lever 23 that swings (rotates) integrally with one pivot shaft 21 supported by the pivot holder 11 is connected to drive. Note that the drive source side link rod 15 of the present embodiment is partitioned by a shaft connecting straight line J1 passing through the two pivot shafts 21 and 22 when viewed from the substantially axial direction of the pivot shafts 21 and 22 (see FIG. 1). It is connected to one pivot lever 23 on one side (the upper side in FIG. 1). The wiper device of the present embodiment is for wiping the windshield fixed to the vehicle body, and one side (the upper side in FIG. 1) partitioned by the shaft connecting straight line J1 is the rear side of the vehicle. It is attached to the vehicle body so as to correspond to the side.

  Also, one pivot lever 23 and the other (left side in FIGS. 1 and 2) pivot lever 24 are drivingly connected by a synchronous link rod 16. The synchronous link rod 16 of the present embodiment is connected to the pivot levers 23 and 24 on one side (upper side in FIG. 1) partitioned by the shaft connecting straight line J1.

  With the above configuration, when the motor 14 is driven, the driving force (the rotational force of the crank arm 14g) is transmitted to the one pivot shaft 21 by the driving source side link rod 15 and the driving source side link rod 15 is driven. The force is further transmitted to the other pivot shaft 22 by the synchronous link rod 16, and the two pivot shafts 21 and 22 rotate in synchronization.

Here, details of the characteristic shape and the like in the wiper device of the present embodiment will be described.
In the hollow frame 13, the pair of connecting and fixing portions 13a and 13b are arranged on a straight line L1 with the shaft centers into which the mounting shafts 11c and 12c of the pivot holders 11 and 12 are inserted. Then, the attachment shafts 11c and 12c of the pivot holders 11 and 12 are respectively inserted into the connection fixing portions 13a and 13b along the straight line L1 (from the left and right sides), and in this state, the outer periphery of the connection fixing portions 13a and 13b. The mounting shafts 11c and 12c of the pivot holders 11 and 12 are fixed by caulking by caulking jigs of the caulking device. In the present embodiment, caulking is performed at four places in the circumferential direction and at a total of eight places in two rows in the direction of the axis (the straight line L1). In addition, the straight line L1 of the present embodiment coincides with the above-described shaft connecting straight line J1 when viewed from the axial direction of the pivot shafts 21 and 22. This is due to the fact that the pivot centers 11a and 12a of the pivot holders 11 and 12 are substantially orthogonal to the axis of the mounting shafts 11c and 12c.

  Further, in the hollow frame 13, two bent portions (first and second bent portions 13f, 13f, b) bent in a substantially crank shape on the one pivot holder 11 side (one coupling fixing portion 13a side) from the drive source fixing portion 13c. 13g) are bent at bending axis centers M1 and M2 (see FIG. 4) that are not parallel to each other (in the present embodiment, they are twisted to each other).

  Specifically, the first bent portion 13f on the connection fixing portion 13a side of the two bent portions bent in a substantially crank shape on the one pivot holder 11 (one connection fixing portion 13a) side from the drive source fixing portion 13c is: Further, from the connection fixing portion 13a toward the base end direction of the pivot shaft 21 (the depth direction in FIG. 1 and FIG. 4A), one side of the shaft connection straight line J1 (FIGS. 1 and 4A). It is bent so as to face the middle and upper side.

  The second bent portion 13g on the drive source fixing portion 13c side of the two bent portions bent in a substantially crank shape on the one pivot holder 11 (one coupling fixing portion 13a) side from the drive source fixing portion 13c is: The drive source fixing portion 13c is bent so as to be disposed on the one side (the upper side in FIGS. 1 and 4A) from the shaft coupling straight line J1. In the present embodiment, the drive source fixing portion 13c is viewed from the axial direction of the pivot shaft 21 (see FIGS. 1 and 4A), and the drive source fixing portion 13c moves toward the other connection fixing portion 13b (pivot holder 12). The second bent so that the distance from the shaft connecting straight line J1 is shortened and is substantially parallel to the straight line L1 when viewed from the direction orthogonal to the axis of the pivot shaft 21 (see FIGS. 2 and 4B). The portion 13g is bent.

  The two bent portions (first and second bent portions 13f and 13g) bent in a substantially crank shape on the side of one pivot holder 11 (one connecting and fixing portion 13a) from the drive source fixing portion 13c are bent angles. θ1 and θ2 (see FIG. 4B) are each set to about 73 °. Note that FIG. 4B shows the inclination in the direction perpendicular to the plane of the drawing because the bent portions at the bending axis centers M1 and M2 (see FIG. 4) that are not parallel to each other are shown from one viewpoint. The illustrated bending angles θ1 and θ2 are schematic. Here, the bending angle is an applied bending angle. The bending angle θ1 is a bending of the crank intermediate portion 13j by an angle θ1 with respect to the coupling fixing portion 13a, and the bending angle θ2 is a crank intermediate portion 13j. In contrast, the drive source fixing portion 13c is bent by an angle θ2.

  Further, in the hollow frame 13, two bent portions (third and fourth bent portions 13h, 13b, 13b) bent in a substantially crank shape on the other pivot holder 12 side (the other connecting and fixing portion 13b side) from the drive source fixing portion 13c. 13i) are bent at bending axis centers M3 and M4 (see FIG. 4) that are not parallel to each other (in the present embodiment, they are twisted to each other).

  Specifically, the third bent portion 13h on the connection fixing portion 13b side of the two bent portions bent in a substantially crank shape on the other pivot holder 12 (the other connection fixing portion 13b) side from the drive source fixing portion 13c is: Further, from the connecting and fixing portion 13b toward the base end direction of the pivot shaft 21 (the depth direction in FIG. 1 and FIG. 4A), one side of the shaft connecting straight line J1 (FIGS. 1 and 4A). It is bent so as to face the middle and upper side.

  The fourth bent portion 13i on the drive source fixing portion 13c side of the two bent portions bent in a substantially crank shape on the other pivot holder 12 (the other coupling fixing portion 13b) side from the drive source fixing portion 13c is as follows. The drive source fixing portion 13c is bent so as to be disposed on the one side (the upper side in FIGS. 1 and 4A) from the shaft coupling straight line J1. In the present embodiment, the drive source fixing portion 13c is viewed from the axial direction of the pivot shaft 21 (see FIG. 1 and FIG. 4A) and becomes closer to one connection fixing portion 13a (pivot holder 11). The fourth bending is performed so that the distance from the shaft connecting straight line J1 is increased and when viewed from the direction perpendicular to the axis of the pivot shaft 21 (see FIGS. 2 and 4B), it is substantially parallel to the straight line L1. The part 13i is bent.

  The two bent portions (third and fourth bent portions 13h and 13i) bent in a substantially crank shape on the other pivot holder 12 (the other connecting and fixing portion 13b) side from the drive source fixing portion 13c are bent angles. θ3 and θ4 (see FIG. 4B) are each set to about 90 °. Note that FIG. 4B shows the tilt in the direction orthogonal to the plane of the paper because the bent axes M3 and M4 (see FIG. 4) that are not parallel to each other are shown from one viewpoint. The illustrated bending angles θ3 and θ4 are schematic.

  The drive source side link rod 15 is an intermediate crank connecting the first bent portion 13f and the second bent portion 13g when viewed from the direction orthogonal to the axis of the pivot shaft 21 when the motor 14 is driven (see FIG. 2). Although it moves on a plane intersecting with the portion 13j, it is set and arranged so as not to contact the crank intermediate portion 13j even if it moves. FIG. 5 is a plan view showing a state where the motor 14 is driven from the state of FIG. 1 and the drive source side link rod 15 is moved to another position. As described above (see FIG. 5), the drive source side link rod 15 moves according to the rotation position of the crank arm 14g and the rotation position of the one pivot lever 23. 13 (crank intermediate portion 13j) is avoided.

Next, characteristic effects of the above embodiment will be described below.
(1) The hollow frame 13 connects the pair of connecting and fixing portions 13a and 13b to which the pivot holders 11 and 12 are fixed, and the pair of connecting and fixing portions 13a and 13b, and is bent so that the pivot shafts 21 and 22 The motor 14 is disposed in the proximal direction of the pivot shafts 21 and 22, that is, in the inner part of the vehicle body without using a bracket or the like. Thus, it can be arranged below the windshield spaced from the bonnet.

  In addition, two bent portions (first and second bent portions) bent in a substantially crank shape on the side of the pivot holder 11 on one side of the drive source fixing portion 13c (one on which the driving force is transmitted from the drive source side link rod 15). 13f and 13g) are bent at bending axis centers M1 and M2 (see FIG. 4) that are not parallel to each other, so that the posture of the drive source fixing portion 13c with respect to the connecting and fixing portions 13a and 13b, and thus the posture of the motor 14 can be freely increased. Even if the hollow frame 13 and the drive source side link rod 15 are likely to interfere with each other, the hollow frame 13 and the drive source can be changed depending on the bending method (first and second bent portions 13f and 13g). Interference with the side link rod 15 can be avoided without increasing the number of bending processes.

  (2) Bending axis centers M3 and M4 which are not parallel to each other in the two bent portions (third and fourth bent portions 13h and 13i) bent in a substantially crank shape on the other pivot holder 12 side from the drive source fixing portion 13c. (See FIG. 4), for example, the distance between the two bent portions (the interval between the first bent portion 13f and the second bent portion 13g and the third bent portion) of the hollow frame 13 on both the pivot holders 11 and 12 side, for example. 13h and the distance between the fourth bent portion 13i) is set to be long, and the motor 14 can be easily set in the interior of the vehicle body in the base end direction of the pivot shafts 21 and 22 sufficiently in the mounting space according to the vehicle. can do. Moreover, depending on how the bent portions (first to fourth bent portions 13f to 13i) are bent, the posture of the drive source fixing portion 13c, and consequently the posture of the motor 14, is changed to the vehicle mounting space, the movement locus of the drive source side link rod 15, and the like. Together, it can be in an appropriate posture.

  (3) The motor 14 is fixed to the drive source fixing portion 13c and is also inserted into and supported by a fitting hole as a support portion of the vehicle body. The motor 14 is closer to one pivot holder 11 than the drive source fixing portion 13c. Since the two bent portions (first and second bent portions 13f and 13g) bent in a substantially crank shape are bent at bending axis centers M1 and M2 (see FIG. 4) that are not parallel to each other, The motor 14 can be easily arranged according to the position of the fitting portion as the support portion. For example, by changing the attitude of the drive source fixing portion 13c, that is, the attitude of the motor 14, the insertion direction of the support rubber member 14e into the fitting hole can be easily changed without changing the motor 14 itself. In addition, when the position for fixing the two pivot holders 11 and 12 and the position for supporting the motor 14 are already set on the vehicle body side, the two bent portions (first and second bent portions 13f and 13g). Are simply bent at bending axes M1 and M2 that are not parallel to each other, for example, the shape and posture of the drive source fixing portion 13c, and thus the posture of the motor 14, can be easily changed without requiring significant changes in other members. Thus, the wiper device can be provided.

  (4) The pair of connecting and fixing portions 13a and 13b is a pair of caulking devices in the caulking and fixing process because the shaft centers into which the mounting shafts 11c and 12c of the pivot holders 11 and 12 are inserted are arranged on the straight line L1. The caulking jigs are simply arranged side by side on the straight line L1. In other words, there is no need to set a twist or a step in the pair of caulking jigs in advance, and the caulking jigs can be caulked easily at the same time. Further, for example, even if the relative inclinations of the two pivot shafts 21 and 22 differ depending on the type of vehicle to be mounted (the curvature of the windshield), the shafts of the pair of connecting and fixing portions 13a and 13b Since the center is fixed on the straight line L1 (because it does not correspond by changing the axis of the pair of connecting and fixing portions), the caulking device can be caulked and fixed with a common setting. Further, for example, even when the length and shape of the drive source fixing portion 13c between the connection fixing portions 13a and 13b are changed according to the vehicle type to be mounted, the pair of caulking jigs are only moved along the straight line L1. Since the positioning is completed in this way, it is easy to set the caulking device for the variation. From these, for example, the caulking device can be made simple and inexpensive.

  (5) Two bent portions (first and second bent) bent in a substantially crank shape on one side of the pivot holder 11 from the drive source fixing portion 13c (the drive force transmitted from the drive source side link rod 15). The portions 13f and 13g) are smaller in bending angle than the two bent portions (third and fourth bent portions 13h and 13i) bent in a substantially crank shape on the other pivot holder 12 side from the drive source fixing portion 13c (about Therefore, the rigidity of the bent portion (the first and second bent portions 13f and 13g) on the side of the pivot holder 11 on which a large load is applied particularly when driving a snow puddle can be increased. In addition, since the two bent portions (first and second bent portions 13f and 13g) on the one pivot holder 11 side have small bending angles θ1 and θ2, the necessary length of the drive source side link rod 15 is naturally reduced (wasted). Can be secured). Specifically, the required length of the drive source side link rod 15 is determined by the mechanism, but two bent portions (first and second bent portions 13f and 13g) on the side where the drive source side link rod 15 is disposed. The bending angles θ1 and θ2 are small, and the hollow frame 13 at that portion extends obliquely, so that the necessary length can be ensured naturally (with less waste).

The above embodiment may be modified as follows.
In the above embodiment, the pair of connecting and fixing portions 13a and 13b are arranged on the straight line L1 with the shaft center into which the mounting shafts 11c and 12c of the pivot holders 11 and 12 are inserted. Instead, the shaft center into which the mounting shafts 11c and 12c are inserted may not be on the straight line L1. In the above-described embodiment, the mounting shafts 11c and 12c are inserted into the coupling fixing portions 13a and 13b and fixed by caulking. However, the present invention is not limited to this, and may be fixed by a method other than caulking. Good.

  In the above embodiment, the hollow frame 13 is bent in a substantially crank shape on the other connection fixing portion 13b side from the drive source fixing portion 13c, but is substantially on the other connection fixing portion 13b side. You may change into other shapes which are not crank shapes. For example, the driving source fixing portion 13c is bent in a substantially crank shape on the one side of the coupling fixing portion 13a and has a first and second bending portion, and the driving source fixing portion serves as the other bending portion. The shape may be bent so as to intersect the connection fixing portion 13b, and the other connection fixing portion 13b may have only one bent portion (the connection fixing portion 13b and the drive source fixing portion are directly connected).

  In the above embodiment, the third and fourth bent portions 13h and 13i are not parallel to each other (that is, a positional relationship of torsion or a crossing positional relationship, and in the embodiment, a bending positional relationship) Although it is assumed that it is bent at the axis centers M3 and M4 (see FIG. 4), it is not limited to this, and it may be bent at the centers of the bending axes parallel to each other.

  In the above embodiment, the motor 14 is fixed to the drive source fixing portion 13c and is also supported by the fitting hole as the support portion of the vehicle body. However, the present invention is not limited to this, and only the drive source fixing portion 13c is used. It is good also as a structure supported by (it is not directly supported by the vehicle body).

  In the above embodiment, the two bent portions (the first bent portion) bent in a substantially crank shape on the side of the pivot holder 11 on the one side (the drive force is transmitted from the drive source side link rod 15) from the drive source fixing portion 13c. And the second bent portions 13f and 13g) are bent at two bent portions (third and fourth bent portions 13h and 13i) bent in a substantially crank shape on the other pivot holder 12 side from the drive source fixing portion 13c. Is set to be small (approximately 73 °), but is not limited thereto. For example, the bending angles of the bent portions (first to fourth bent portions 13f to 13i) are all substantially the same (for example, 90 °). You may change to Further, at least one bending angle of each bent portion (first to fourth bent portions 13f to 13i) may be larger than 90 °, and for example, a substantially crank shape may be a Z-shape.

  In the above embodiment, the straight line L1 coincides with the shaft connecting straight line J1 when viewed from the axial direction of the pivot shafts 21 and 22. However, the present invention is not limited to this, and the straight line L1 and the shaft connecting straight line are not limited thereto. It is good also as a structure which has shifted | deviated from J1. In other words, the pivot centers 11a and 12a of the pivot holders 11 and 12 may have a torsional positional relationship with the axes of the mounting shafts 11c and 12c not being orthogonal to each other.

  In the above embodiment, the bending angle of each bent portion is set so that the longitudinal axis L2 of the drive source fixing portion 13c is substantially parallel to the straight line L1 when viewed from the direction perpendicular to the axis of the pivot shaft 21. However, the present invention is not limited to this, and the longitudinal axis L2 of the drive source fixing portion 13c may be inclined with respect to the straight line L1 when viewed from the direction orthogonal to the axis of the pivot shaft 21. Further, the bending angle of each bent portion may be set so that the longitudinal axis L2 has a twisted positional relationship with the straight line L1.

  In the above embodiment, the one side divided by the shaft connecting straight line J1 is attached to the vehicle body so as to correspond to the vehicle rear side, but is not limited to this, and corresponds to the vehicle front side. It may be attached to the vehicle body.

  In the above embodiment, the driving source fixing portion 13c is made hollow by being crushed, and the cross section in the direction perpendicular to the axis is formed in a substantially U shape, but is not limited thereto, and is not crushed. Or it is good also as a hollow shape only crushed.

Two pivot holders that pivotably support a pivot shaft with a wiper arm fixed at the tip and are respectively fixed to the vehicle body side;
A hollow frame made of a hollow material and connecting the pivot holders to each other;
A drive source fixed to the hollow frame;
A drive source side link rod that transmits the drive force of the drive source to one of the pivot shafts supported by one of the pivot holders;
A wiper device comprising a synchronous link rod that further transmits a driving force of the drive source side link rod to the other pivot shaft supported by the other pivot holder,
The hollow frame is disposed in the proximal direction of the pivot shaft by connecting and bending the pair of connection fixing portions to which the pivot holder is fixed, and the pair of connection fixing portions, and the drive source is fixed. And a drive source fixing part
The wiper device characterized in that the two bent portions bent in a substantially crank shape on the one pivot holder side from the drive source fixing portion are bent at respective bending axis centers that are not parallel to each other.

  According to this configuration, the hollow frame is arranged in the proximal direction of the pivot shaft by connecting and bending the pair of connection fixing portions to which the pivot holder is fixed and the pair of connection fixing portions, and the drive source is fixed. The drive source is arranged in the base end direction of the pivot shaft, that is, in the inner part of the vehicle body (for example, below the windshield spaced apart from the bonnet) without using a bracket or the like. Can do.

  In addition, the two bent parts bent in a substantially crank shape on the pivot holder side on one side (the driving force transmitted from the drive source side link rod) from the drive source fixing part are bent at the centers of the bending axes that are not parallel to each other. Therefore, the posture of the driving source fixing portion relative to the coupling fixing portion, and thus the posture of the driving source can be changed with a high degree of freedom, and even if the hollow frame and the driving source side link rod are likely to interfere with each other, By bending, interference between the hollow frame and the drive source side link rod can be avoided without increasing the number of bending processes.

The two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion are bent at bending axis centers that are not parallel to each other.
According to this configuration, the two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion are also bent at the respective bending axis centers that are not parallel to each other. By setting the distance between the two bent portions of the hollow frame to be long, the drive source can be easily arranged and set sufficiently deep inside the vehicle body in the base end direction of the pivot shaft in the mounting space matched to the vehicle. Moreover, the attitude of the driving source fixing part, and consequently the attitude of the driving source, can be made to be in an appropriate attitude according to the mounting space of the vehicle, the movement locus of the driving source side link rod, etc.

The drive source is fixed to the drive source fixing portion and supported by the vehicle body.
According to this configuration, the drive source is fixed to the drive source fixing portion and is also supported by the support portion of the vehicle body, and one side of the drive source fixing portion (the driving force is transmitted from the drive source side link rod). The two bent portions bent in a substantially crank shape on the side of the pivot holder are bent at the respective bending axis centers that are not parallel to each other, so that the drive source is set according to the position of the support portion of the vehicle body. It can be easily arranged. That is, when the position where the two pivot holders are fixed first and the position where the drive source is supported is set on the vehicle body, the two bent portions are bent at the centers of the bending axes that are not parallel to each other. For example, the wiper device can be disposed by easily changing the shape and posture of the drive source fixing portion, and thus the posture of the drive source, without requiring significant change of other members.

  The two bent portions bent in a substantially crank shape on the one pivot holder side from the driving source fixing portion are two bent portions bent in a substantially crank shape on the other pivot holder side from the driving source fixing portion. The bending angle is set smaller than the portion.

  According to this configuration, the two bent portions bent in a substantially crank shape on the pivot holder side on one side (the drive force transmitted from the drive source side link rod) from the drive source fixed portion are Since the bending angle is set smaller than the two bent portions bent in a substantially crank shape on the other pivot holder side, the rigidity of the bent portion on the one pivot holder side where a large load is applied (particularly when driving a snow puddle) Can be high. Further, since the two bent portions on one pivot holder side have a small bending angle, the necessary length of the drive source side link rod can be ensured naturally (with less waste). Specifically, the required length of the drive source side link rod is determined by the mechanism, but the two bent portions on the side where the drive source side link rod is disposed have a small bending angle, and the hollow frame at that portion is inclined. Thus, the necessary length can be secured naturally (with less waste).

The drive source side link rod is a pivot lever that swings integrally with one of the pivot shafts on one side partitioned by a shaft connecting straight line passing through the two pivot shafts when viewed from the substantially axial direction of the pivot shaft. Connected to
Of the two bent portions bent in a substantially crank shape on the one pivot holder side from the drive source fixing portion, the first bent portion on the connection fixing portion side is connected to the base of the pivot shaft from the connection fixing portion. Bending toward the end direction and toward one side of the shaft coupling straight line,
Of the two bent parts bent in a substantially crank shape on the one pivot holder side from the drive source fixed part, the drive source fixed part is connected to the shaft at the second bent part on the drive source fixed part side. It is bent so as to be arranged on the one side from the straight line,
The drive source side link rod moves on a plane intersecting the crank intermediate portion connecting the first bent portion and the second bent portion when viewed from the direction orthogonal to the axis of the pivot shaft, and the crank intermediate portion It is set and arranged so as not to contact.

  DESCRIPTION OF SYMBOLS 11, 12 ... Pivot holder, 11c, 12c ... Mounting shaft, 13 ... Hollow frame, 13a, 13b ... Connection fixing | fixed part, 13c ... Drive source fixing | fixed part, 13f-13i ... 1st-4th bending part (bending part), 13j ... crank intermediate part, 14 ... motor (drive source), 15 ... drive source side link rod, 16 ... synchronous link rod, 21, 22 ... pivot shaft, 23, 24 ... pivot lever, θ1-θ4 ... bending angle, J1 ... Axis connecting straight line, L1 ... Line, M1-M4 ... Bending axis center.

Claims (5)

Two pivot holders that pivotably support a pivot shaft to which a wiper arm is fixed at the tip and are respectively fixed to the vehicle body side;
A hollow frame made of a hollow material and connecting the pivot holders to each other;
A drive source fixed to the hollow frame;
A wiper device comprising: a link rod that transmits a driving force of the driving source to the pivot shaft;
The hollow frame is disposed in the proximal direction of the pivot shaft by connecting and bending the pair of connection fixing portions to which the pivot holder is fixed, and the pair of connection fixing portions, and the drive source is fixed. Drive source fixing part
The wiper device characterized in that the two bent portions bent in a substantially crank shape on the one pivot holder side from the drive source fixing portion are bent at respective bending axis centers that are not parallel to each other. The wiper device according to claim 1,
The wiper device characterized in that the two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion are bent at respective bending axis centers that are not parallel to each other. The wiper device according to claim 1 or 2,
The wiper device, wherein the drive source is fixed to the drive source fixing portion and supported by the vehicle body. The wiper device according to any one of claims 1 to 3,
The connection fixing part is fixed by caulking by inserting an attachment shaft of the pivot holder,
The wiper device characterized in that the pair of connecting and fixing portions are arranged such that the shaft centers into which the mounting shafts are inserted are aligned. The wiper device according to any one of claims 1 to 4,
Two bent portions bent in a substantially crank shape on one pivot holder side from the drive source fixing portion are two bent portions bent in a substantially crank shape on the other pivot holder side from the drive source fixing portion. A wiper device characterized in that the bending angle is set smaller.