JP2012046104A - Wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper device which can be easily attached to an attachment object having a different shape.SOLUTION: A wiper motor 27 disposed on the wiper device includes: a motor body 30; and a speed-reduction mechanism which reduces the speed of rotation of the motor body 30 to transmits the speed-reduced rotation to an output shaft; wherein the speed-reduction mechanism is housed in a gear housing 35. On the side surface of the gear housing 35, a holder part 51, which is opened on the shaft-directional base end side of the output shaft, is integrally formed. An attachment member 52 is fitted from the opening side of the holder part 51, the attachment member 52 is retained on the holder part 51, and by inserting the attachment member 52 into an insertion hole formed on a motor side vehicle body panel, the wiper motor 27 is attached to the motor side vehicle body panel.

Description

  The present invention relates to a wiper device that wipes a wiping surface by swinging a wiper member by a wiper motor.

  A vehicle such as an automobile is equipped with a wiper device for wiping rainwater, dust and the like adhering to the windshield with a wiper member to ensure a driver's field of view. The wiper device includes a pivot shaft on which a wiper member is mounted and a wiper motor that drives the pivot shaft. By swinging and driving the pivot shaft, the wiper member slides on the windshield and becomes a windshield. It is designed to wipe off rainwater, dust, etc. adhering.

  A wiper device including a pair of wiper members, such as a tandem type or a counter-wiping type wiper device, is provided with a pair of pivot shafts to which the wiper members are respectively attached. A link mechanism is provided between each pivot shaft and the wiper motor. The link mechanism converts the rotational motion of the wiper motor into a swing motion, and swings each pivot shaft in synchronization. As such a wiper device, for example, as described in Patent Document 1, a pair of pivot holders that rotatably support each pivot shaft are fixed to both ends of a pipe-shaped frame member, and a wiper motor is mounted on a frame. A so-called frame-integrated modular wiper device is known which is fixed to a substantially central portion of a member.

  By the way, in the wiper device described in Patent Document 1, when mounting to the vehicle body, a support pin protruding from the housing of the wiper motor is inserted into the insertion hole of the panel on the vehicle body side. In addition, the wiper device is attached to the vehicle body in addition to mounting holes provided in the pair of pivot holders, and the pivot holders are fixed to the vehicle body by fixing bolts inserted into the mounting holes. As described above, the wiper device described in Patent Document 1 is supported on the vehicle body at a total of three locations by the support pins (one location) of the wiper motor and the attachment holes (two locations) of each pivot holder.

Japanese Patent No. 3,492,938

  However, according to the wiper device described in the above-mentioned Patent Document 1, since the support pin inserted into the vehicle body side panel is integrally formed on the housing of the wiper motor, the applicability to a vehicle body having a different panel shape is achieved. Was low. That is, in order to attach the wiper device to various vehicles formed in different panel shapes, it is necessary to manufacture a plurality of types of housings having support pins corresponding to the respective panel shapes. Therefore, the manufacturing process of the wiper device becomes complicated, and the cost of the wiper device increases. Therefore, it has been desired to develop a wiper device that can easily cope with different panel shapes while sharing the components of the wiper device as much as possible.

  An object of the present invention is to easily cope with the attachment of a wiper device to an attachment object having a different shape.

  The wiper device of the present invention is a wiper device having a pair of pivot shafts to which wiper members are respectively attached, a pair of pivot holders attached to an attachment object and rotatably supporting the pivot shafts, A frame member that couples the pair of pivot holders to each other, a motor main body, a speed reduction portion that reduces the rotation of the motor main body and transmits it to the output shaft, and a housing that is attached to the motor main body and houses the speed reduction portion A wiper motor which is fixed to the frame member and drives the pair of pivot shafts, and is provided between the wiper motor and the pivot shafts. A link mechanism that transmits to the shaft, a holder portion that is formed integrally with the housing and opens to at least one side, and opens to the holder portion. Held by the holder portion is fitted from the side, and having a mounting member mounted in insertion state with respect to the attachment object.

  The wiper device of the present invention is characterized in that the holder portion is opened in the axial direction of the output shaft.

  In the wiper device according to the present invention, the attachment member includes a pin-shaped core member and an elastic member attached to the core member, and the elastic member is interposed between the core member and the holder portion. It is characterized by interposing.

  According to the present invention, since the mounting member is formed separately from the housing of the wiper motor, it is possible to cope with various mounting objects having different shapes by changing the shape of the mounting member. Accordingly, the divertability of the wiper device can be improved and the manufacturing process thereof can be simplified, and as a result, the cost of the wiper device can be reduced. In addition, since the mounting member is held in the holder part by fitting the mounting member into the holder part formed integrally with the housing of the wiper motor, it is provided separately in the housing without using a fixing member such as a bolt. The attached mounting member can be attached to the housing. Accordingly, the bottleless structure can reduce the number of components and the weight of the wiper device.

  According to the present invention, since the holder portion is opened in the axial direction of the output shaft and the attachment member is fitted into the holder portion from the opening side of the holder portion, the attachment member is held in the holder portion. When a load is applied from the outside, the attachment member is detached from the holder portion, and the wiper device can be detached from the attachment object. Thereby, it is possible to prevent the holder part and the attachment member from being damaged when the wiper device is detached, and the attachment member and the like can be reused when the wiper device is attached again.

It is explanatory drawing which shows the front side of the vehicle carrying the wiper apparatus which is one embodiment of this invention. It is a top view of the wiper device seen from the vehicles upper part side. It is a rear view of the wiper device seen from the vehicles back side. It is explanatory drawing which shows the internal structure of a gear unit part. It is a perspective view of a wiper motor. It is a side view of a wiper motor. It is a top view of a wiper motor. It is a disassembled perspective view of a motor side attaching part. It is sectional drawing of the motor side attaching part which follows the AA line in FIG. It is sectional drawing of the motor side attaching part which follows the BB line in FIG. It is explanatory drawing which shows the state by which the wiper apparatus fell out with respect to the motor side vehicle body panel. It is sectional drawing which shows the modification of an attachment member. It is a disassembled perspective view which shows the other modification of an attachment member. It is sectional drawing which shows the state by which the attachment member shown in FIG. 13 was hold | maintained at the holder part. It is explanatory drawing which shows 1 process at the time of attaching the attachment member shown in FIG. 13 to a holder part. It is sectional drawing which shows the modification of the fitting structure of a holder part and an attachment member. It is sectional drawing which shows the other modification of the fitting structure of a holder part and an attachment member.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a front windshield 11 is provided on the front side of the vehicle 10, and on the front windshield 11, a DR side (driver's seat side) that wipes rainwater and dust attached to the front windshield 11. ) A wiper member 12a and an AS side (passenger seat side) wiper member 12b are provided.

  Each of the wiper members 12a and 12b includes wiper blades 13a and 13b that slide on the front windshield 11 as a wiping surface, and wiper arms 14a and 14b that swing the wiper blades 13a and 13b. The wiper blades 13a and 13b are rotatably attached to the tips of the wiper arms 14a and 14b, and are elastically contacted with the front windshield 11 by a tension spring (not shown) provided inside the wiper arms 14a and 14b.

  The wiper blades 13a and 13b are swung between the lower inversion position LRP and the upper inversion position URP on the front windshield 11 by the wiper arms 14a and 14b, and are formed between the lower inversion position LRP and the upper inversion position URP. The wiping ranges 11a and 11b are synchronized and reciprocated in the same direction. That is, the wiping pattern of the wiper members 12a and 12b is a tandem type.

  The vehicle 10 is mounted with a wiper device 15 that is positioned on the front side of the front windshield 11 for reciprocally wiping the wiper members 12a and 12b. The wiper device 15 is disposed in a cowl 16 formed on the front side of the vehicle, and is covered with a cowl top panel 17 that closes an opening side (front side in the drawing) of the cowl 16. FIG. 2 is a plan view of the wiper device viewed from above the vehicle, and FIG. 3 is a rear view of the wiper device viewed from the vehicle rear side.

  The wiper device 15 includes a DR-side pivot shaft 18a on which the DR-side wiper member 12a is mounted, and an AS-side pivot shaft 18b on which the AS-side wiper member 12b is mounted. The pivot shafts 18a and 18b have axial tip portions that pass through the cowl top panel 17 and project outside the cowl 16. The pivot shafts 18a and 18b have bases of the wiper arms 14a and 14b at the axial tip portions. Each end is attached.

  As shown in FIGS. 2 and 3, the axial base end side of the DR side pivot shaft 18a is inserted through the cylindrical support portion 21a of the DR side pivot holder 20a disposed in the cowl 16, and the DR side pivot shaft 18a is rotatably supported by the DR side pivot holder 20a. The DR side pivot holder 20a is provided with a DR side attachment portion 22a for fixing the DR side pivot holder 20a to the DR side body panel 10a of the vehicle 10 as an attachment object. A rubber bush 23 is attached to the DR side mounting portion 22a, and the DR side pivot holder 20a is fastened to the DR side vehicle body by fastening a fixing bolt (not shown) inserted through the bush 23 to the DR side body panel 10a. It is fixed to the panel 10a.

  Similarly, the base end side in the axial direction of the AS side pivot shaft 18b is inserted into the cylindrical support portion 21b of the AS side pivot holder 20b disposed in the cowl 16, and the AS side pivot shaft 18b is inserted into the AS side pivot holder 20b. It is supported rotatably by. The AS side pivot holder 20b is provided with an AS side attachment portion 22b for fixing the AS side pivot holder 20b to the AS side body panel 10b of the vehicle 10 as an attachment object. A rubber bush 23 is attached to the AS-side mounting portion 22b. By fastening a fixing bolt (not shown) inserted through the bush 23 to the AS-side vehicle body panel 10b, the AS-side pivot holder 20b is moved to the AS-side vehicle body. It is fixed to the panel 10b.

  Each of the pivot holders 20a and 20b is provided with connecting portions 24a and 24b extending on opposite sides of the pivot holders 20a and 20b. Between these pivot holders 20a and 20b, a frame member 25 extending in the vehicle width direction (left and right direction in the figure) of the vehicle 10 is disposed, and connecting portions 24a of the pivot holders 20a and 20b are disposed at both ends of the frame member 25. 24b are fixed by caulking. That is, the frame member 25 connects the pivot holders 20a and 20b so as to have a predetermined relative positional relationship. Therefore, by preparing the frame member 25 having a different shape, it is possible to deal with different assembly spaces on the vehicle 10 side while sharing the component parts other than the frame member 25. The frame member 25 is not limited to a hollow cylindrical pipe, and may be a hollow member or a solid member having a hexagonal cross section, for example, in consideration of the rigidity required for the frame member 25. .

  A wiper motor 27 is fixed to a substantially central portion of the frame member 25 by a pair of fixing bolts 26, and the wiper motor 27 and the pivot holders 20 a and 20 b are supported by the frame member 25. In other words, the wiper device 15 is a so-called frame-integrated modular wiper device in which the wiper motor 27 and the pivot holders 20a and 20b are connected by the frame member 25. The wiper motor 27 is a drive source that drives the pivot shafts 18a and 18b, and includes a motor body (electric motor) 30 and a gear unit portion 31 that includes a reduction mechanism that transmits the motor body 30 by decelerating and transmitting the rotation. This is a motor with a speed reduction mechanism. FIG. 4 is an explanatory view showing the internal structure of the gear unit.

  A DC motor with a brush is used for the motor main body 30, and by supplying a drive current to the motor main body 30 via the connector 32, a motor shaft 33 provided in the motor main body 30 is rotationally driven. Yes. The motor main body 30 has a motor case 34 formed into a bottomed cylindrical shape by pressing a thin steel plate, and one end of the motor shaft 33 in the axial direction is rotatably supported by the motor case 34. Yes. The motor body 30 is attached to the gear housing 35 of the gear unit portion 31 on the opening side of the motor case 34.

  The gear housing 35 includes a bottomed aluminum gear case 36 that opens to the side orthogonal to the axial direction of the motor shaft 33, and a resin gear cover 37 that closes the opening side of the gear case 36. A motor fixing portion 36a for fixing the wiper motor 27 to the frame member 25 is integrally formed on a side surface of the gear case 36 on the frame member 25 side, and the wiper motor 27 is attached to the frame by a pair of fixing bolts 26 in the motor fixing portion 36a. It is fixed to the member 25. As shown in FIG. 4, the other axial end of the motor shaft 33 protrudes inside the gear housing 35, and the twisting directions are opposite to each other on the other axial end of the motor shaft 33. A pair of worms 33a and 33b are integrally formed.

  A pair of counter gears 38a and 38b are accommodated inside the gear housing 35 adjacent to the pair of worms 33a and 33b, respectively. The pair of counter gears 38a and 38b are disposed on opposite sides of the axis of the motor shaft 33, and support shafts 39a and 39b extending in a direction orthogonal to the axial direction of the motor shaft 33, that is, in the opening direction of the gear case 36. Thus, the gear housing 35 is rotatably supported by each. Each counter gear 38a, 38b is a two-stage gear provided with worm wheels 40a, 40b meshing with adjacent worms 33a, 33b and pinion gears 41a, 41b rotated integrally with the worm wheels 40a, 40b. . The rotation of the worms 33a and 33b is transmitted to the counter gears 38a and 38b at a reduced speed, and the counter gears 38a and 38b are rotated at the same rotational speed in the same rotational direction.

  A single output gear 42 is accommodated inside the gear housing 35 adjacent to the pair of pinion gears 41a and 41b. An axial base end portion of an output shaft 43 extending in parallel with the support shafts 39a and 39b is fixed to the shaft center of the output gear 42, and the output gear 42 is rotatably supported in the gear housing 35 by the output shaft 43. Has been. The output gear 42 has a larger number of teeth than the pinion gears 41a and 41b, and meshes with the pinion gears 41a and 41b. The rotation of the pair of pinion gears 41 a and 41 b is transmitted to the output gear 42 at a reduced speed, and the output shaft 43 is rotated together with the output gear 42.

  The worms 33a and 33b, the counter gears 38a and 38b, and the output gear 42 form a speed reduction mechanism (reduction portion) 44. The rotation of the motor body 30 is reduced by the speed reduction mechanism 44 housed in the gear housing 35. It is transmitted to the output shaft 43. The front end of the output shaft 43 in the axial direction penetrates the bottom wall of the gear case 36 and protrudes outside the gear housing 35. Note that the speed reduction mechanism 44 is not limited to the structure described above, and other structures may be used.

  As shown in FIG. 3, one end portion of the crank arm 45 is fixed to the tip end portion of the output shaft 43 in the axial direction. Also, one end of the DR side drive lever 46a is fixed to the axial base end of the DR side pivot shaft 18a, and the other end of the crank arm 45 and the other end of the DR side drive lever 46a are connected to the ball joint. Are respectively rotatably connected to both ends of the DR side connecting rod 47a. Similarly, one end portion of the AS side drive lever 46b is fixed to the axial base end portion of the AS side pivot shaft 18b, and the other end portion of the crank arm 45 and the other end portion of the AS side drive lever 46b are balls. Each of the AS-side connecting rods 47b is rotatably connected to both ends of the AS-side connecting rod 47b via joints.

  A link mechanism 48 is formed by the crank arm 45, the drive levers 46a and 46b, and the connecting rods 47a and 47b, and the output shaft 43 is formed by the link mechanism 48 provided between the wiper motor 27 and the pivot shafts 18a and 18b. Is rotated into a swinging motion and transmitted to the pivot shafts 18a and 18b. Accordingly, when the wiper motor 27 is operated by operating the operation switch provided in the vehicle interior, the output of the wiper motor 27 is transmitted to the pivot shafts 18a and 18b, so that the wiper members 12a and 12b are driven to swing. It has become.

  The wiper motor 27 is provided with a motor-side attachment portion 50 for attaching the wiper motor 27 to the motor-side vehicle body panel 10c of the vehicle 10 as an attachment object. FIG. 5 is a perspective view of the wiper motor, FIG. 6 is a side view of the wiper motor, and FIG. 7 is a plan view of the wiper motor. 8 is an exploded perspective view of the motor side mounting portion, FIG. 9 is a sectional view of the motor side mounting portion along the line AA in FIG. 6, and FIG. 10 is a motor side along the line BB in FIG. It is sectional drawing of an attaching part.

  The motor side mounting portion 50 has a holder portion 51 formed integrally with the gear case 36 of the gear housing 35 and a mounting member 52 held by the holder portion 51. The mounting member 52 is attached to the motor side body panel 10c. The wiper motor 27 is attached to the motor-side vehicle body panel 10c by being inserted into the insertion hole 10d formed in.

  The holder portion 51 of the gear case 36 is integrally formed on the side surface of the gear case 36 so as to protrude to the side opposite to the motor fixing portion 36a. As shown in FIG. 8, the holder portion 51 includes a pair of end walls 51 a and 51 b and end walls 51 a and 51 b that are arranged to face each other at a predetermined interval in a direction orthogonal to the axial direction of the output shaft 43. And a side wall 51c that connects the outer peripheral portions of the output shaft 43 to each other, and an accommodation hole 54 that opens to the axial base end side of the output shaft 43, that is, the vehicle upper side, is formed between the pair of end walls 51a and 51b. I am doing. The closed side of each end wall 51 a, 51 b has a semicircular shape, and the accommodation hole 54 has a substantially circular hole shape opened to the proximal end side in the axial direction of the output shaft 43.

  One end wall 51a of the pair of end walls 51a, 51b is provided to abut against the side surface of the gear case 36, and the other end wall 51b is located outside the one end wall 51a, that is, away from the motor fixing portion 36a. Placed in position. The end wall 51b is formed with a circular engagement hole 55 penetrating in a direction orthogonal to the axial direction of the output shaft 43. The engagement hole 55 is connected to the opening direction of the accommodation hole 54 via the assembly groove 56. Open in the same direction. The assembly groove 56 is formed so as to be narrowed toward the engagement hole 55 side. As shown in FIG. 10, the opening dimension L1 in the communication portion between the assembly groove 56 and the engagement hole 55 is the size of the engagement hole 55. It is set smaller than the diameter D1. In other words, the end wall 51 b is located at the opening portion of the engagement hole 55 on the proximal side in the axial direction of the output shaft 43, and a pair of intervals L1 is set smaller than the diameter D1 of the engagement hole 55. A wedge-shaped holding claw 57 is provided.

  On the other hand, the attachment member 52 includes a metal cored bar member (core member) 60 formed in a pin shape and a rubber rubber member (elastic member) 61 attached to the cored bar member 60. . The metal core member 60 includes an annular plate-shaped flange part 60a and a cylindrical part 60b extending from the inner peripheral part of the flange part 60a to one axial direction, and the flange part 60a is an axial base of the cylindrical part 60b. It is formed to protrude radially outward from the end. However, the shape of the cored bar member 60 can be variously changed. For example, the cored bar member 60 may have a pin shape including a disc-shaped flange portion and a columnar portion extending from the flange portion to one side in the axial direction. Further, although the metal cored bar member 60 is used as the core member, the core member may be formed of a material other than metal such as resin.

  The rubber member 61 has a substantially cylindrical shape in which a mounting hole 62 for mounting the core member 60 is formed on the inner side, and the mounting hole 62 opens on the axial base end side of the rubber member 61. A pair of annular projecting portions 61 a and 61 b projecting radially outward is provided on the base end side in the axial direction of the rubber member 61 at a predetermined interval in the axial direction of the rubber member 61. An annular engaging groove 63 that opens radially outward is formed between the protrusions 61a and 61b. However, in the present embodiment, the axial front end of the rubber member 61 has a hemispherical shape so that the axial front end of the rubber member 61 can be easily inserted into the insertion hole 10d of the motor-side vehicle body panel 10c. The shape of the rubber member 61 can be variously changed.

  As shown by an arrow (1) in FIG. 8, the rubber member 61 is assembled to the cored bar member 60 from the axial front end side of the cored bar member 60, and the cored bar member 60 is placed in the mounting hole 62 of the rubber member 61. The attachment member 52 is formed by mounting. That is, the cored bar member 60 and the rubber member 61 are assembled together by press-fitting the cored bar member 60 into the mounting hole 62 of the rubber member 61 from the opening side of the mounting hole 62.

  In a state where the rubber member 61 is mounted on the core metal member 60, the outer peripheral surface of the cylindrical portion 60b of the core metal member 60 is in contact with the inner peripheral surface of the mounting hole 62 of the rubber member 61 as shown in FIG. The outer peripheral surface of the cylindrical portion 60 a of the cored bar member 60 is covered with a rubber member 61. Further, the end surface on the axial base end side of the flange portion 60 a of the core metal member 60 is not covered with the rubber member 61, and the end surface on the axial base end side of the flange portion 60 a and the axial base end side of the rubber member 61. Are arranged on substantially the same plane.

  The mounting member 52 includes an axially proximal end fitting portion 52a to be fitted into the holder portion 51 of the gear case 36, and an axially distal end pin portion 52b to be inserted into the insertion hole 10d of the motor-side vehicle body panel 10c. ing. Further, the fitting portion 52 a of the attachment member 52 has a cylindrical shape that is located on the radially inner side of the engagement groove 63 formed in the rubber member 61, that is, the outer peripheral surface faces the engagement groove 63. An engaging portion 64 is provided.

  As shown by an arrow (2) in FIG. 8, the attachment member 52 is arranged with respect to the holder portion 51 in a state where the axial direction thereof is arranged parallel to the penetrating direction of the engagement hole 55 formed in the holder portion 51. The output shaft 43 is assembled from the axial base end side, that is, the opening side of the accommodation hole 54. Then, the fitting portion 52 a of the attachment member 52 is fitted into the holder portion 51 of the gear case 36, and the attachment member 52 is held by the holder portion 51, whereby the motor side attachment portion 50 is formed.

  In the state where the holder portion 51 and the attachment member 52 are assembled to each other, the attachment member 52 has the axial direction of the output shaft 43 so that the pin portion 52a of the attachment member 52 protrudes to the opposite side of the motor fixing portion 36a. It arrange | positions toward the direction orthogonal to an axial direction. As shown in FIG. 9, in the accommodation hole 54 of the holder portion 51, the protruding portion 61 a on the proximal side in the axial direction of the pair of protruding portions 61 a and 61 b of the rubber member 61 and the flange portion 60 a of the metal core member 60. Is press-fitted, and the end surface on the proximal side in the axial direction of the flange portion 60 a is abutted against the end wall 51 a of the holder portion 51. That is, both ends in the axial direction of the protruding portion 61 a of the rubber member 61 and the flange portion 60 a of the metal core member 60, that is, the behavior direction side of the wiper motor 27 are covered by the pair of end walls 51 a and 51 b of the holder portion 51. Further, the end wall 51b of the holder portion 51 is press-fitted into the engagement groove 63 of the rubber member 61, and the engagement portion 64 of the attachment member 52 is formed in the engagement hole 55 formed in the end wall 51b as shown in FIG. It is fitted inside.

  Here, the outer diameter of the engaging portion 64 of the mounting member 52 fitted in the engaging hole 55 is formed corresponding to the diameter D1 of the engaging hole 55, and the mutual distance between the pair of holding claws 57 is determined. It is set larger than L1. Therefore, even if a load on the lower side of the vehicle due to the weight of the wiper device 15 acts on the holder portion 51 of the gear housing 35 on the mounting member 52 inserted into the insertion hole 10d of the motor-side vehicle body panel 10c, a pair of The holding claw 57 prevents the engaging portion 64 of the mounting member 52 from coming out of the engaging hole 55, and the mounting member 52 is held by the holder portion 51. When the engaging portion 64 of the mounting member 52 is fitted into the engaging hole 55 via the mounting groove 56 when the holder portion 51 and the mounting member 52 are assembled, the rubber member 61 is engaged in a compressed state. It is assembled so as to be pushed into the hole 55.

  As shown in FIG. 9, the motor side mounting portion 50 is assembled to the motor side body panel 10c by inserting the pin portion 52a of the mounting member 52 held by the holder portion 51 into the insertion hole 10d of the motor side body panel 10c. It is done. That is, the attachment member 52 is attached in an inserted state to the motor-side vehicle body panel 10c.

  In a state where the motor-side mounting portion 50 is assembled to the motor-side vehicle body panel 10 c, the protruding portion 61 b of the rubber member 61 is abutted against the motor-side vehicle body panel 10 c, and the protruding portion 61 b of the rubber member 61 is the end wall of the holder portion 51. It is sandwiched between 51b and the motor-side body panel 10c. Thereby, it is possible to prevent the wiper motor 27 from rattling with respect to the motor-side vehicle body panel 10c due to vibration and behavior when the wiper is activated. However, it is not always necessary to insert the pin portion 52a of the mounting member 52 into the insertion hole 10d of the motor-side vehicle body panel 10c until the protruding portion 61b is abutted against the motor-side vehicle body panel 10c, and only the tip portion of the pin portion 52a is inserted. You may make it insert in the hole 10d.

  In the wiper device 15, the motor-side mounting portion 50 is assembled to the motor-side vehicle body panel 10c, and the wiper motor 27 is positioned and supported with respect to the motor-side vehicle body panel 10c. By fixing 22b to the DR-side vehicle body panel 10a and the AS-side vehicle body panel 10b, they are mounted in the cowl 16. The wiper device 15 is supported by the vehicle body panels 10a to 10c by three points of the motor side mounting portion 50 of the wiper motor 27 and the mounting portions 22a and 22b of the pair of pivot holders 20a and 20a.

  As described above, since the mounting member 52 is formed separately from the gear housing 35 of the wiper motor 27, the shape of the motor-side vehicle body panel 10c is different by changing the shape of the pin portion 52b of the mounting member 52. It is possible to easily cope with the attachment of the wiper device 15 to the vehicle 10. That is, by preparing various attachment members 52 having different shapes, it is possible to attach the wiper device 15 to the motor-side vehicle body panel 10c having different shapes while making the wiper motor 27 common. Therefore, the applicability of the wiper device 15 can be improved and the manufacturing process thereof can be simplified. As a result, the cost of the wiper device 15 can be reduced. For example, by preparing various mounting members 52 having different shaft lengths of the pin portion 52b, various distances between the wiper motor 27 and the motor-side vehicle body panel 10c can be changed without changing the design of the gear housing 35 of the wiper motor 27. The vehicle 10 can be handled.

  Further, since the attachment member 52 is held in the holder portion 51 by fitting the attachment member 52 into the holder portion 51 formed integrally with the gear housing 35 of the wiper motor 27, a fixing member such as a bolt is not used. The attachment member 52 provided separately from the gear housing 35 can be attached to the gear housing 35. Therefore, the bottleless structure can reduce the number of parts and the weight of the wiper device 15.

  In addition, since the attachment member 52 is fitted into the holder portion 51, a fastening operation such as a bolt is not required, and the operation of attaching the attachment member 52 to the gear housing 35 is facilitated. Furthermore, the mounting structure for mounting the mounting member 52 to the gear housing 35 can be set more compactly compared to the case where the mounting member is fixed to the gear housing with bolts or the like, so that the material of the mounting member 52 can be reduced. Is possible.

  In addition, since the end surface on the axial direction base end side of the flange portion 60a of the core metal member 60 is abutted against the gear housing 35 via the end wall 51a of the holder portion 51, the core member is formed integrally with the gear housing. As in the case, it is possible to prevent the wiper motor 27 from rattling with respect to the motor-side vehicle body panel 10c due to vibration and behavior when the wiper is activated. Further, since the flange portion 60a of the metal core member 60 and the protruding portion 61a of the rubber member 61 are press-fitted into the accommodation hole 54 of the holder portion 51, the attachment member 52 is prevented from being detached from the holder portion 51. can do.

  The wiper device 15 has a drop-off function for protecting pedestrians. When a load is applied to the wiper device 15 from above the vehicle due to an object colliding with the cowl top panel 17, the wiper device 15 The vehicle body panels 10a to 10c are dropped off. FIG. 11 is an explanatory view showing a state in which the wiper device is detached from the motor-side vehicle body panel. In FIG. 11, a state where the wiper device 15 is attached to the motor-side vehicle body panel 10c is indicated by a two-dot chain line, and a state where the wiper device 15 is detached from the motor-side vehicle body panel 10c is indicated by a solid line.

  The attachment member 52 to be inserted into the insertion hole 10d of the motor-side vehicle body panel 10c is held by the holder portion 51 by being fitted from the opening side into the holder portion 51 that opens to the axial base end side of the output shaft 43, that is, the vehicle upper side. ing. Therefore, when a load is applied to the wiper device 15 from above the vehicle (upper side in the drawing), that is, when a load opposite to the opening direction of the holder portion 51 is applied to the wiper device 15, the engaging portion 64 of the mounting member 52 is The attachment member 52 is detached from the holder portion 51 through the engagement hole 55 of the portion 51. Then, as indicated by an arrow in FIG. 11, the wiper device 15 is detached from the motor-side vehicle body panel 10c while the attachment member 52 is inserted into the insertion hole 10d of the motor-side vehicle body panel 10c. The pivot holders 20a and 20b are also provided with a drop-off function (not shown) so that the wiper device 15 can be dropped with respect to the DR-side vehicle body panel 10a and the AS-side vehicle body panel 10b.

  In this way, the holder portion 51 is opened toward the base end side in the axial direction of the output shaft 43, that is, the vehicle upper side, and the attachment member 52 is fitted into the holder portion 51 from the opening side of the holder portion 51. Since the holder 51 is held, the attachment member 52 is detached from the holder 51 when a load is applied to the wiper device 15 from the outside, and the wiper device 15 can be detached from the motor-side vehicle body panel 10c. . Thereby, it is suppressed that the holder part 51 and the attachment member 52 are damaged when the wiper device 15 is detached, and the attachment member 52 and the like can be reused when the wiper device 15 is attached again.

  FIG. 12 is a cross-sectional view showing a modification of the attachment member. In FIG. 12, the same members as those described above are denoted by the same reference numerals, and the description thereof is omitted.

  The rubber member 61 of the mounting member 52 shown in FIG. 12 is provided with an annular projecting portion 61c that projects radially outward from the tip end portion in the axial direction. The protrusion 61c is provided at a predetermined interval in the axial direction of the rubber member 61 with respect to the annular protrusion 61b provided on the base end side in the axial direction of the rubber member 61, and a pair of protrusions 61b, An annular fitting groove 71 opening radially outward is formed between the portions 61c. An annular fitting portion 72 is located on the pin portion 52 b of the mounting member 52 so as to be located on the radially inner side of the fitting groove 71 formed in the rubber member 61, that is, so that the outer peripheral surface faces the fitting groove 71. Is provided. Further, the mounting holes 62 of the rubber member 61 are open to both ends in the axial direction of the rubber member 61, and when the core metal member 60 is mounted in the mounting hole 62, the shaft of the cylindrical portion 60 b of the core metal member 60 is provided. The direction front end surface is not covered with the rubber member 61.

  The attachment member 52 held by the holder 51 is slid from the opening side into the insertion hole 10d of the motor-side vehicle body panel 10c that opens upward, downward, or laterally of the vehicle. In a state where the attachment member 52 is assembled to the motor-side vehicle body panel 10c, the fitting portion 72 provided on the pin portion 52b of the attachment member 52 is fixed in the insertion hole 10d. In addition, the motor-side vehicle body panel 10c is press-fitted into the fitting groove 71 of the rubber member 61, and the motor-side vehicle body panel 10c is sandwiched between the pair of projecting portions 61b and 61c. This prevents the attachment member 52 from being detached from the motor-side vehicle body panel 10c and further suppresses the wiper motor 27 from rattling against the motor-side vehicle body panel 10c due to vibration and behavior during the wiper operation. ing. Even when the mounting member 52 shown in FIG. 12 is used, the same effect as that obtained when the mounting member 52 shown in FIG. 8 is used is naturally obtained.

  13 is an exploded perspective view showing another modified example of the mounting member, FIG. 14 is a cross-sectional view showing a state in which the mounting member shown in FIG. 13 is held by the holder portion, and FIG. 15 is a mounting view shown in FIG. It is explanatory drawing which shows 1 process at the time of attaching a member to a holder part. 13 to 15, the same members as those described above are denoted by the same reference numerals, and the description thereof is omitted.

  A cored bar member (core member) 80 of the mounting member 52 shown in FIG. 13 is formed of a first cored bar half 82 and a second cored bar half 83. The first core metal half 82 includes an annular plate-shaped flange portion 82a and a cylindrical portion 82b extending from the inner peripheral portion of the flange portion 82a to one side in the axial direction, and the flange portion 82a is a portion of the cylindrical portion 82b. It is formed to protrude radially outward from the axial base end. The outer diameter of the cylindrical portion 82 b of the first core metal half 82 is set smaller than the inner diameter of the mounting hole 62 of the rubber member 61.

  On the other hand, the second core metal half 83 includes an annular plate-shaped flange 83a and a cylindrical portion 83b extending from the inner peripheral portion of the flange 83a to the other side in the axial direction, and the flange 83a is a cylindrical portion. It is formed so as to protrude radially outward from the axial tip of 83b. The inner diameter of the cylindrical portion 83b of the second core metal half 83 is set corresponding to the outer diameter of the cylindrical portion 82b of the first core metal half 82, and the outer diameter of the cylindrical portion 83b of the second core metal half 83 is It is set corresponding to the inner diameter of the mounting hole 62 of the rubber member 61.

  Next, the assembly process of the attachment member 80 and the holder part 51 is demonstrated. First, as shown by the arrow (1) in FIG. 13, the rubber member 61 is assembled to the first core metal half 82 from the front end side in the axial direction of the first core metal half 82, and the first core metal half 82 is assembled. Is accommodated in the mounting hole 62 of the rubber member 61. In a state where the first core metal half 82 is accommodated in the rubber member 61, a predetermined gap is formed between the outer peripheral surface of the cylindrical portion 82 b of the first core metal half 82 and the inner peripheral surface of the mounting hole 62 of the rubber member 61. A gap 84 is formed, and the outer peripheral surface of the cylindrical portion 82 b of the first core metal half 82 is covered with the rubber member 61 through the gap 84.

  Subsequently, as indicated by an arrow (2) in FIG. 8, the first metal core half 82 and the rubber member 61 are arranged so that the axial directions thereof are parallel to the penetrating direction of the engagement hole 55 formed in the holder portion 51. In the state, the first metal core half 82 and the rubber member 61 are assembled to the holder portion 51 from the opening side of the accommodation hole 54. At this time, when the first core metal half 82 and the rubber member 61 are fitted into the engagement hole 55 via the assembly groove 56, the diameter of the rubber member 61 is filled so as to fill the gap 84 as shown in FIG. In a state of being elastically deformed toward the inner side in the direction, it is assembled by being pushed into the engagement hole 55.

  Then, as indicated by an arrow (3) in FIG. 13, the second core metal half 83 and the first core metal half 82 with respect to the first core metal half 82 and the rubber member 61 assembled to the holder portion 51. The second cored bar half 83 is mounted in the gap 84 between the first cored bar half 82 and the rubber member 61. That is, the second cored bar half 83 is assembled to the rubber member 61 from the side opposite to the first cored bar half 82, and the second cored bar half 83 is pressed into the mounting hole 62 of the rubber member 61. The metal core halves 82 and 83 and the rubber member 61 are assembled together to form the attachment member 52.

  In a state where the core metal halves 82 and 83 and the rubber member 61 are assembled with each other, the outer peripheral surface of the cylindrical portion 83b of the second core metal half 83 is attached to the mounting hole 62 of the rubber member 61 as shown in FIG. The outer peripheral surface of the cylindrical portion 83 b of the second core metal half 83 is covered with a rubber member 61. The inner peripheral surface of the cylindrical portion 83 b of the second core metal half 83 is in contact with the outer peripheral surface of the cylindrical portion 82 b of the first core metal half 82, and the cylindrical portion 82 b of the first core metal half 82 is in contact with the outer peripheral surface. The outer peripheral surface is covered with a second core metal half 83. That is, the second cored bar half 83 is mounted so as to fill the gap 84 between the first cored bar half 82 and the rubber member 61. Thereby, the rubber member 61 is restrained from being elastically deformed radially inward, so that the engagement portion 64 of the attachment member 52 is prevented from coming out of the engagement hole 55 by the pair of holding claws 57. The attachment member 52 is held by the holder portion 51.

  As described above, the first core metal half 82 and the rubber member 61 are assembled to the holder portion 51 in a state where the gap 84 is provided between the first core metal half 82 and the rubber member 61. By elastically deforming the rubber member 61 inward in the radial direction so as to fill the gap 84, the first core metal half 82 and the rubber member 61 can be easily fitted into the engagement holes 55 of the holder portion 51. It becomes possible. Therefore, compared with the case where the rubber member 61 is compressed and pushed into the engagement hole 55 as in the case of the attachment member 52 shown in FIG. 9, the work load when the attachment member 52 is fitted into the holder portion 51 is increased. Can be reduced.

  Further, in a state where the first core metal half 82 and the rubber member 61 are assembled to the holder portion 51, the second core metal half so as to fill the gap 84 between the first core metal half 82 and the rubber member 61. Since the body 83 is mounted, the rubber member 61 is suppressed from being elastically deformed radially inward, and the attachment member 52 can be firmly held by the holder portion 51. Even when the mounting member 52 shown in FIG. 13 is used, the same effect as that obtained when the mounting member 52 shown in FIG.

  FIG. 16 is a cross-sectional view showing a modification of the fitting structure between the holder part and the attachment member, and FIG. 17 is a cross-sectional view showing another modification of the fitting structure between the holder part and the attachment member. 16 and 17, the same members as those described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the end wall 51 b of the holder portion 51 shown in FIG. 16, an engagement hole 90 that penetrates in a direction orthogonal to the axial direction of the output shaft 43 is formed, and the engagement hole 90 is orthogonal to the opening direction of the accommodation hole 54. It has a long hole shape that extends in the direction of the movement. The engagement hole 90 opens in the same direction as the opening direction of the accommodation hole 54 via the assembly groove 91. An opening dimension L2 of the assembly groove 91 is set to be smaller than a longitudinal dimension D2 of the engagement hole 90, and the end wall 51b of the holder portion 51 has a substantially T-shape by the engagement hole 90 and the assembly groove 91. Grooves are formed. On the other hand, the engaging portion 93 of the mounting member 52 fitted into the engaging hole 90 of the holder portion 51 is formed in a cylindrical shape having a substantially oval cross section corresponding to the shape of the engaging hole 90.

  As shown by the alternate long and short dash line in FIG. 16, the attachment member 52 is arranged in a state where the longitudinal direction of the engagement portion 93 is arranged orthogonal to the longitudinal direction of the engagement hole 90 formed in the holder portion 51. Is inserted into the assembly groove 92 from the opening side of the accommodation hole 54 with respect to the holder portion 51. Then, as shown by a two-dot chain line in FIG. 16, the engaging portion 93 is press-fitted and fitted into the engaging hole 90 of the holder portion 51 while rotating the attachment member 52. Here, the longitudinal dimension of the engaging portion 93 of the mounting member 52 fitted in the engaging hole 90 is formed corresponding to the longitudinal dimension D2 of the engaging hole 90, and the opening dimension L2 of the assembly groove 91 is formed. Is set larger than. Therefore, even if a load on the vehicle lower side due to the weight of the wiper device 15 acts on the holder portion 51 of the gear housing 35 with respect to the mounting member 52 inserted into the insertion hole 10d of the motor-side vehicle body panel 10c, the mounting member The engagement portion 93 of 52 is prevented from coming out of the engagement hole 90, and the attachment member 52 is held by the holder portion 51.

  In addition, a circular engagement hole 100 that opens in a direction orthogonal to the axial direction of the output shaft 43 is formed in the end wall 51b of the holder portion 51 shown in FIG. It opens in the same direction as the accommodation hole 54. The assembly groove 101 communicates with the engagement hole 100 in a direction orthogonal to the opening direction of the accommodation hole 54, and the end wall 51 b of the holder portion 51 has a substantially L shape by the engagement hole 100 and the assembly groove 101. Grooves are formed. On the other hand, the engaging portion 103 of the attachment member 52 fitted into the engaging hole 100 of the holder portion 51 is formed in a substantially cylindrical shape corresponding to the shape of the engaging hole 100.

  As shown by the one-dot chain line in FIG. 17, the attachment member 52 is assembled to the holder portion 51 from the opening side of the accommodation hole 54 so that the engaging portion 103 is inserted into the assembly groove 101. Then, as shown by a two-dot chain line in FIG. 17, the attachment member 52 is moved in the communication direction between the engagement hole 100 and the assembly groove 101, and the engagement portion 103 is fitted into the engagement hole 100 of the holder portion 51. The vehicle upper side (the upper side in the figure) of the engaging portion 103 of the mounting member 52 fitted in the engaging hole 100 is covered with an end wall 51 b of the holder portion 51. Therefore, even if a load on the vehicle lower side due to the weight of the wiper device 15 acts on the holder portion 51 of the gear housing 35 with respect to the mounting member 52 inserted into the insertion hole 10d of the motor-side vehicle body panel 10c, the mounting member The engagement portion 103 of 52 is prevented from coming out of the engagement hole 100, and the attachment member 52 is held by the holder portion 51.

  Thus, the fitting structure between the holder part 51 and the mounting member 52 can be arbitrarily changed, and even when the fitting structure between the holder part 51 and the mounting member 52 shown in FIGS. 16 and 17 is applied, FIG. It goes without saying that the same effect as that obtained when the fitting structure of the holder 51 and the mounting member 52 shown in FIG. However, when the fitting structure of the holder part 51 and the attachment member 52 shown in FIG. 10 is applied, the attachment member 52 may be fitted into the holder part 51 while rotating, or the attachment member 52 may be opened to the accommodation hole 54. There is no need to move in the direction orthogonal to the direction, that is, in the direction of communication between the engagement hole 100 and the assembly groove 101. Therefore, the attachment member 52 can be detached from the holder portion 51 when an external load is applied to the wiper device 15, and the wiper device 15 can have a sufficient dropping function.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the invention. For example, in the above embodiment, the mounting member 52 is formed by the cored bar member 60 and the rubber member 61. However, the mounting member 52 may be formed only by the cored bar member 60 without providing the rubber member 61. good.

  In the above-described embodiment, the wiper device 15 has a drop-off function by opening the accommodation hole 54 and the engagement hole 55 formed in the holder portion 51 on the axial base end side of the output shaft 43, that is, on the vehicle upper side. However, if the wiper device 15 is not provided with a drop-off function, the accommodation hole 54 and the engagement hole 55 of the holder portion 51 may be opened in a direction other than the axial base end side of the output shaft 43. good.

  Furthermore, in the above-described embodiment, the pin-shaped attachment member 52 is inserted into the insertion hole 10d formed in the motor-side vehicle body panel 10c. However, the attachment in which the insertion hole is formed in the holder portion 51 of the gear housing 35 You may make it attach an attachment member to the motor side vehicle body panel 10c in the insertion state by hold | maintaining a member and inserting the pin member provided in the motor side vehicle body panel 10c in the insertion hole of an attachment member.

  Furthermore, in the said embodiment, although the wiping pattern of the wiper apparatus 15 was made into the tandem type | mold, this invention is not limited to this, It can respond to other wiping patterns, such as a counter wiping type | mold.

  Further, in the above embodiment, the wiper device 15 for wiping the front windshield 11 on the front side of the vehicle 10 is shown, but the present invention is not limited to this, and the rear windshield on the rear side of the vehicle is wiped. The present invention can also be applied to a wiper device and a wiper device for wiping a windshield such as a railway vehicle or an aircraft.

10 Vehicle 10a DR side body panel (attachment object)
10b AS side body panel (object to be mounted)
10c Motor side body panel (object to be mounted)
10d Insertion hole 11 Front windshield 11a, 11b Wiping range 12a DR side wiper member 12b AS side wiper member 13a, 13b Wiper blade 14a, 14b Wiper arm 15 Wiper device 16 Cowl 17 Cowl top panel 18a DR side pivot shaft 18b AS side pivot shaft 20a DR side pivot holder 20b AS side pivot holder 21a, 21b Cylindrical support portion 22a DR side attachment portion 22b AS side attachment portion 23 Bushing 24a, 24b Connection portion 25 Frame member 26 Fixing bolt 27 Wiper motor 30 Motor body 31 Gear unit portion 32 Connector 33 Motor shaft 33a, 33b Worm 34 Motor case 35 Gear housing 36 Gear case 36a Motor fixing part 37 Gear cover 38a, 38b Counter gear 39 a, 39b Support shafts 40a, 40b Worm wheels 41a, 41b Pinion gear 42 Output gear 43 Output shaft 44 Reduction mechanism (deceleration section)
45 crank arm 46a DR side drive lever 46b AS side drive lever 47a DR side connecting rod 47b AS side connecting rod 48 link mechanism 50 motor side mounting part 51 holder part 51a, 51b end wall 51c side wall 52 mounting member 52a fitting part 52b pin Portion 54 Accommodating hole 55 Engagement hole 56 Assembly groove 57 Holding claw 60 Core metal member 60a Gutter 60b Cylindrical portion 61 Rubber member (elastic member)
61a-61c Protruding part 62 Mounting hole 63 Engaging groove 64 Engaging part 71 Fitting groove 72 Fitting part 80 Core metal member 82 First core metal half body 82a collar part 82b Cylindrical part 83 Second core metal half body 83a collar part 83b Cylindrical portion 84 Clearance 90 Engagement hole 91 Assembly groove 93 Engagement portion 100 Engagement hole 101 Assembly groove 103 Engagement portion

Claims (3)

A wiper device having a pair of pivot shafts on which wiper members are respectively mounted,
A pair of pivot holders attached to the object to be mounted and rotatably supporting the pivot shafts;
A frame member interconnecting the pair of pivot holders;
A pair of pivot shafts fixed to the frame member and including a motor main body, a speed reduction portion that decelerates rotation of the motor main body and transmits it to the output shaft, and a housing that is attached to the motor main body and accommodates the speed reduction portion A wiper motor that drives
A link mechanism that is provided between the wiper motor and each pivot shaft and converts the rotational motion of the output shaft into a swing motion and transmits the swing motion to each pivot shaft;
A holder part integrally formed with the housing and opening at least on one side;
A wiper device comprising: an attachment member that is fitted into the holder portion from the opening side, is held by the holder portion, and is attached to the attachment object in an inserted state.   The wiper device according to claim 1, wherein the holder portion is opened in an axial direction of the output shaft.   3. The wiper device according to claim 1, wherein the attachment member includes a pin-shaped core member and an elastic member attached to the core member, and the gap between the core member and the holder portion. Is a wiper device in which the elastic member is interposed.

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