JP2008213552A - Wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deal with both existence/nonexistnece of installation of a piece cover while making an installing structure of a wiper arm and a wiper blade a single kind of structure. <P>SOLUTION: A clearance is formed between an arm supporting member 50 and a bent part 23a except for a projected part 54 since the bent part 23a is supported between the projected part 54 of the arm supporting member 50 and an arm installing member 40 by providing the arm supporting member 50 on which the projected part 54 partially making contact with an outer peripheral surface of the bent part 23a of the arm piece 23 is formed. Consequently, a part of the piece cover 24 enters the clearance between the arm supporting member 50 and the bent part 23a in the state where contact of the projected part 54 and the bent part 23a is held, and accordingly a yield is improved in correspondence with existence of the piece cover 24 in the single kind of the installing structure. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wiper device for wiping a windshield of a vehicle or the like, and more particularly to a mounting structure of a wiper arm and a wiper blade.

  2. Description of the Related Art Conventionally, a vehicle such as an automobile is provided with a wiper device for securing a driver's field of view by wiping off deposits such as rain and snow attached to a windshield and splashes of a front vehicle. Such a wiper device includes a wiper arm driven by an electric motor, and a wiper blade mounted on the distal end side of the wiper arm. The wiper blade includes a blade holder rotatably mounted on the distal end side of the wiper arm. And a blade rubber mounted on the blade holder. The blade rubber is pressed against the windshield by a spring built in the wiper arm. In this state, the wiper arm is driven by an electric motor, so that the blade rubber swings on the windshield and is wiped off. It is supposed to be.

As a mounting structure of a wiper arm and a wiper blade that are rotatably mounted on each other, for example, a technique described in Patent Document 1 is known. In the mounting structure described in Patent Document 1, first, an arm piece (wiper arm) whose tip side is bent in a U-shape is mounted on a connecting member that is rotatably provided on an arm portion (blade holder). . In this state, the locking member provided rotatably on the connecting member is tilted to the arm piece side to support the arm piece between the locking member and the connecting member, whereby the wiper arm and the wiper blade are supported. Are attached to each other so as to be rotatable.
Japanese Patent Laying-Open No. 2006-096257 (FIG. 1)

  The wiper arm is composed of an arm head that is mounted on a rotating shaft, a retainer that is rotatably mounted on the arm head, and an arm piece that has a proximal end mounted on the retainer. A step is formed between them. In order to make this step inconspicuous and to improve the appearance of the wiper device or to suppress the resistance acting on the wiper device when receiving the traveling wind, it is conceivable to install a piece cover that covers the arm piece.

  However, according to the wiper device described in Patent Document 1 described above, since the entire arm piece side of the lock member is in direct contact with the arm piece when the wiper arm and the wiper blade are mounted, the lock member There is no gap between the arm piece and the arm cover. Therefore, when the piece cover is attached to the arm piece, a lock member for attaching the piece cover is newly required, and it is necessary to prepare a plurality of types of lock members corresponding to the presence or absence of the piece cover, resulting in poor yield. There was a fear.

  An object of the present invention is to provide a wiper device that can cope with whether or not a piece cover is mounted while the mounting structure of the wiper arm and the wiper blade is a single type of structure.

  The wiper device of the present invention is a wiper device having a blade holder on which a proximal end is mounted on a rotating shaft driven by a driving source and a blade rubber for wiping the windshield is mounted on the distal end side. An arm head fixed to the shaft, a retainer rotatably attached to the arm head, an arm piece having a proximal end attached to the retainer and a bent portion formed on the distal end side, and a blade holder. An arm mounting member that is movably provided and is mounted on the inner side of the bent portion, and a protrusion that is rotatably provided on the arm mounting member and partially contacts the outer peripheral surface of the bent portion. And an arm support member.

  The wiper device according to the present invention is characterized in that a piece cover that covers the arm piece is provided, and a slit into which the protruding portion is slidably inserted is formed at a tip portion that covers the bent portion of the piece cover.

  The wiper device according to the present invention is characterized in that a thickness dimension of the base end side of the piece cover is set to a level difference between the retainer and the arm piece.

  The wiper device according to the present invention is characterized in that the thickness dimension on the distal end side of the piece cover is a dimension in which the distal end side surface of the piece cover and the proximal end side surface of the arm support member are formed on the same plane. .

  The wiper device of the present invention is characterized in that the piece cover is attached to the arm piece from the wiping direction of the blade rubber.

  The wiper device according to the present invention is characterized in that a contact force of the protruding portion with respect to the bent portion is set by adjusting a protruding amount of the protruding portion.

  According to the present invention, an arm support member is provided that has a protruding portion that partially contacts the outer peripheral surface of the bent portion of the arm piece, and the bent portion is supported between the protruding portion of the arm support member and the arm mounting member. Therefore, a gap can be formed between the arm support member excluding the protruding portion and the bent portion. Therefore, in a state where the contact between the protruding portion and the bent portion is maintained, a part of the piece cover can be inserted into the gap between the arm support member and the bent portion. The yield can be improved according to the presence or absence of the cover.

  According to the present invention, the piece cover that covers the arm piece is provided, and the slit that allows the protruding portion to slide freely is formed at the tip end portion that covers the bent portion of the piece cover, thereby preventing the piece cover from coming off the arm piece. On the other hand, the smooth movement of the protrusion with respect to the arm piece can be ensured.

  According to the present invention, since the thickness dimension of the base end side of the piece cover is made to be the step dimension between the retainer and the arm piece, the step between the retainer and the arm piece can be made inconspicuous by the piece cover. Therefore, it is possible to improve the appearance of the wiper device and to suppress the resistance acting on the wiper device when receiving the traveling wind.

  According to the present invention, the thickness dimension on the distal end side of the piece cover is made such that the distal end side surface of the piece cover and the proximal end side surface of the arm support member are formed on the same plane, so that the level difference of the part is inconspicuous can do. Therefore, it can suppress that the foreign material which inhibits both relative rotation penetrate | invades between a piece cover and an arm support member.

  According to the present invention, since the piece cover is attached to the arm piece from the blade rubber wiping direction, the piece cover can be detached from the arm piece even when the piece cover is gripped and the wiper device is locked back during car washing or the like. Can be prevented.

  According to the present invention, the contact force of the protruding portion with respect to the bent portion is set by adjusting the protruding amount of the protruding portion, so that the arm piece supported between the arm mounting member and the arm supporting member does not rattle. The condition can be set.

  Hereinafter, an embodiment of a wiper device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view for explaining a front wiper mounted on a vehicle, FIG. 2 is an enlarged view showing the wiper device of FIG. 1, and FIGS. 3 (a) and 3 (b) show a front end side of the wiper arm. 4 is a partially enlarged view seen from the lower side of FIG. 3, FIG. 5 is an explanatory diagram for explaining a method of attaching the piece cover, and FIGS. 6A and 6B are broken line circles in FIG. FIG. 7 is a perspective view showing the arm mounting member, FIG. 8 is a perspective view showing the arm support member, and FIG. 9 is a sectional view taken along the line AA in FIG. 10 is a cross-sectional view taken along the line BB in FIG. 2, FIG. 11 is a partial cross-sectional view taken along the line CC in FIG. 2, and FIG. Each figure is shown.

  As shown in FIG. 1, the vehicle 10 includes a front wiper for wiping off deposits such as rain and snow attached to the windshield 11 as a windshield and splashes from the front vehicle to ensure the driver's view. 12 is mounted.

  The front wiper 12 includes a wiper motor 13 as a drive source that is rotationally driven by operating a wiper switch (not shown) provided in the vehicle, and the driver seat side as a rotation shaft that is driven by the wiper motor 13. Passenger seat side wiper shafts 14 a and 14 b, base end sides are fixed to the respective wiper shafts 14 a and 14 b, and the front end side swings on the windshield 11, the passenger seat side wiper arms 15 a and 15 b, and the wiper motor 13 And a link mechanism 16 for converting the rotational motion into the swing motion of the wiper arms 15a and 15b.

  On the front end side of each wiper arm 15a, 15b, similarly formed driver side and passenger side wiper blades 17a, 17b are mounted so as to be rotatable with respect to the vertical direction of the windshield 11, respectively. The blades 17a and 17b are in elastic contact with the windshield 11 by springs (not shown) built in the wiper arms 15a and 15b. Then, by rotating the wiper motor 13, the wiping ranges 18a and 18b indicated by the two-dot chain line in the drawing on the windshield 11, that is, between the lower inversion position (wiper arm stop position) and the upper inversion position, The wiper blades 17a and 17b are in sliding contact.

  FIG. 2 shows a wiper device on the driver's seat side, and the wiper devices on the driver's seat side and on the passenger seat side have the same configuration. Therefore, only the wiper device on the driver's seat side will be described below. In the description of the wiper device on the driver's seat side, the component parts are simply referred to as “wiper arm” without the “driver's seat side” attached. The suffix “a, b” is omitted.

  As shown in FIG. 2, the wiper device 20 includes a wiper arm 15 and a wiper blade 17, and the wiper arm 15 and the wiper blade 17 are rotatably mounted on each other. The wiper arm 15 includes a substantially L-shaped arm head 21 fixed to the wiper shaft 14 (see FIG. 1), a retainer 22 rotatably mounted on the arm head 21, and a proximal end side as shown in FIG. (Right side in the figure) is attached to the retainer 22 and has an arm piece 23 having a bent portion 23a formed on the tip side (left side in the figure).

  The arm piece 23 is formed into a predetermined shape by pressing a steel plate material or the like, and the base end side of the arm piece 23 is a retainer 22 made of a steel plate material having a thickness smaller than the thickness of the arm piece 23. Is attached to the retainer 22 by bending. Therefore, a step G (see FIG. 5) having a thickness dimension of the retainer 22 is formed between the retainer 22 and the arm piece 23.

  A piece cover 24 made of a resin material such as plastic is attached to the arm piece 23 so that the thickness dimension of the base end side of the piece cover 24 is the same as the thickness dimension of the step G, that is, The same dimension as the thickness dimension of the retainer 22 is set. Therefore, when the piece cover 24 is attached to the arm piece 23, as shown in FIG. 3, the surface Sa of the retainer 22 and the surface Sb of the piece cover 24 are formed on substantially the same plane, and the step G is conspicuous in appearance. It is gone. In particular, the upper surface and both side surfaces of the retainer 22 and the upper surface and both side surfaces of the piece cover 24 are preferably formed on substantially the same surface.

  The piece cover 24 is formed in a shape conforming to the shape of the arm piece, and a main body portion 24a covering the arm piece 23, and first and second legs formed integrally adjacent to the base end side of the main body portion 24a. Parts 24b, 24c, and a bent cover part (tip part) 24d that is integrally formed on the tip side of the body part 24a and covers the bent part 23a of the arm piece 23. In the bent cover portion 24d, a substantially arc-shaped slit 24e is formed along the outer peripheral surface of the bent portion 23a of the arm piece 23.

  The first and second leg portions 24b, 24c are provided integrally adjacent to the arm piece 23, and project in the direction intersecting with the wiping direction of the wiper device 20, the first and second convex portions 23b, First and second engagement holes 25a and 25b are formed to engage with the respective 23c. Here, the diameter dimension of the first engagement hole 25a and the diameter dimension of the first convex portion 23b are set to substantially the same diameter dimension, but the diameter dimension of the second engagement hole 25b is the second dimension. The diameter is set larger than the diameter of the convex portion 23c.

  A plurality of minute protrusions 26, 26... Are integrally formed at equal intervals along the circumferential direction on the inner peripheral surface of the second engagement hole 25b of each engagement hole 25a, 25b. The diameter dimension of a circle (not shown) formed by connecting the tops of the minute protrusions 26, 26... Is set to be smaller than the diameter dimension of the second protrusion 23c. Therefore, as shown in FIG. 4, when the second protrusion 23c is engaged with the second engagement hole 25b, the plurality of minute protrusions 26, 26... Are deformed.

  A method of attaching the piece cover 24 to the arm piece 23 will be described. First, as shown in FIG. 5, the opening O that opens between the main body 24 a of the piece cover 24 and the legs 24 b and 24 c is formed on the side surface of the arm piece 23, that is, the wiping direction of the wiper device 20 (FIG. (Middle arrow) Then, as indicated by a two-dot chain line arrow in the figure, the first engaging hole 25a of the first leg 24b is engaged with the first convex portion 23b for alignment. Here, in a state where the wiper arm 15 is in the lower inverted position, the piece cover 24 is made to face the arm piece 23 so that the opening O faces the roof side of the vehicle 10, that is, the upper side in FIG.

  Thereafter, the bent portion 23 a and the bent cover portion 24 d are aligned using a jig or the like (not shown), and in this state, the second leg portion 24 c is pressed toward the arm piece 23. At this time, the minute protrusions 26, 26,... Provided on the inner peripheral surface of the second engagement hole 25b are deformed by the entry of the second protrusion 23c into the second engagement hole 25b. The Thus, the piece cover 24 can be mounted in a state where the second protrusion 23 c is firmly engaged with the second engagement hole 25 b and is in close contact with the arm piece 23.

  As described above, the minute protrusions 26, 26,... Of the second engagement hole 25b are respectively deformed by the second convex portion 23c, thereby causing a shape error or a piece cover 24 generated when the arm piece 23 is press-formed. The shape error is absorbed. That is, the second leg portion is engaged with the first engaging hole 25a engaged with the first convex portion 23b and the bent portion 23a and the bent cover portion 24d are aligned at a predetermined position. By pressing the 24 c toward the arm piece 23, each minute projection 26, 26... Corresponds to the shape error of the arm piece 23 or piece cover 24 as shown by the arrows in FIGS. Therefore, the shape error of the arm piece 23 and the piece cover 24 is absorbed.

  As shown in FIG. 2, the wiper blade 17 includes a blade holder 30, an arm attachment member 40 that is rotatably attached to a substantially central portion in the longitudinal direction of the blade holder 30, and a rotatable attachment to the arm attachment member 40. An arm support member 50 that is mounted and supports the bent portion 23 a of the arm piece 23 between the arm mounting member 40 and the arm mounting member 40.

  As shown in FIG. 7, the arm mounting member 40 is integrally formed with the main body 41 that is mounted inside the bent portion 23 a of the arm piece 23, and is paired in the vertical direction in the figure. Arm portions 42a and 42b. In the main body 41, a concave groove 43 that is rotatably mounted on a rotation pin 31 (broken line in the figure) having a stopper such as serration provided at both ends of the blade holder 30 at a substantially central portion in the longitudinal direction. A pair of support pins 44a and 44b to which an arm support member 50 is rotatably mounted are integrally formed toward the inner side at the distal end side (left side in the figure) of the arm portions 42a and 42b. Is formed.

  Each arm portion 42a, 42b is formed such that the thickness dimension in the vertical direction in the figure gradually decreases as the distance from the groove 43 increases. Rubber contact portions 45a and 45b are formed that contact the back side of the blade rubber 60 (the chain line in the figure) when the arm mounting member 40 rotates around the moving pin 31.

  As shown in FIGS. 7 and 11, an arm side engaging protrusion 46 as a rotation restricting member is integrally formed on the main body portion 41 of the arm mounting member 40. The blade holder 30 is adapted to engage with the holder-side engagement protrusion 30a. As described above, the arm-side engagement protrusion 46 and the holder-side engagement protrusion 30a engage with each other to restrict the rotation of the arm mounting member 40 with respect to the blade holder 30 by a predetermined angle or more, that is, the wiper arm of the wiper blade 17. 15 (see FIG. 2) is restricted from turning more than a predetermined angle.

  As shown in FIG. 8, the arm support member 50 is a mounting cylinder portion that is rotatably mounted on support pins 44 a and 44 b (broken lines in the drawing) formed on the arm portions 42 a and 42 b of the arm mounting member 40. 51, a main body portion 52 in which the mounting cylinder portion 51 is integrally formed, and a support portion 53 that is integrally formed in the main body portion 52 and can be elastically deformed in the left-right direction in the drawing.

  The support portion 53 is formed to be thinner than the main body portion 52, so that the support portion 53 is elastically deformed in the left-right direction in the drawing. The support portion 53 is integrally formed with a protruding portion 54 having a lateral wall surface 54a and a front wall surface 54b. The lateral wall surface 54a of the projecting portion 54 slides with respect to the slit 24e of the piece cover 24, and the front wall surface 54b slides while partially contacting the outer peripheral surface of the bent portion 23a of the arm piece 23. ing.

  As shown in FIGS. 9 and 10, the blade holder 30 is formed in a substantially hollow shape by a resin material such as plastic, and a blade rubber 60 is held inside thereof. A pair of guide projections 32 a and 32 b are integrally formed in the longitudinal direction inside the blade holder 30 so as to face each other, and each guide projection 32 a and 32 b is formed on the blade rubber 60 to the blade holder 30. It is designed to guide the installation.

  A pair of holding claws 33a and 33b projecting inward from the guide protrusions 32a and 32b are formed on the inner side of the guide protrusions 32a and 32b corresponding to the line BB in FIG. The retaining claws 33a and 33b prevent the blade rubber 60 from coming off from the blade holder 30. Each of the holding claws 33a and 33b is provided in a portion corresponding to the line BB in FIG. 2, and is also provided in a portion on the opposite side centered on the line AA. The blade rubber 60 is supported at two points by the blade holder 30.

  As shown in FIG. 10, contact protrusions 34 that contact the back side of the blade rubber 60 are integrally formed at portions corresponding to the holding claws 33a and 33b of the blade holder 30. The contact protrusion 34 is in contact with the back side of the blade rubber 60, so that excessive inclination of the blade rubber 60 with respect to the blade holder 30 during wiping is suppressed.

  A pair of covers 35 that cover the blade rubber 60 are attached to the left and right sides of the blade holder 30 in FIG. 2, and claw portions 35 a formed integrally with the covers 35 are formed inside the blade holder 30. Each of the covers 35 is prevented from being detached from the blade holder 30 by being fitted into the contact protrusions 34 respectively. As shown in FIG. 10, a steel core 35b is inserted into the claw portion 35a of the cover 35 by insert molding or the like, thereby giving the claw portion 35a flexibility and repeated elastic deformation. Improves durability.

  The blade holder 30 and each cover 35 are integrally formed with fins 36 along the longitudinal direction of the blade holder 30, and the fins 36 are adapted to travel wind when the vehicle 10 travels at a high speed. As a result, the blade rubber 60 is prevented from being lifted from the windshield 11, and the wiping performance of the wiper blade 17 is prevented from being lowered. Moreover, since the opening part O of the piece cover 24 attached to the arm piece 23 faces the fin 36 side, the opening part O of the piece cover 24 can be made inconspicuous in appearance.

  The blade rubber 60 is formed by using a material such as natural rubber or chloroprene rubber and pouring the molten material into a mold. As shown in FIGS. 9 and 10, the blade rubber 60 has a main body 62 on which a pair of vertebra 61 as a plate spring made of steel is mounted. Each of the vertebras 61 is formed in an arc shape so as to bend with a radius of curvature smaller than the radius of curvature of the windshield 11, whereby the pressing force against the windshield 11 in the entire longitudinal direction of the blade rubber 60 is made substantially uniform. It is trying to become.

  On the lower side of the main body portion 62 of the blade rubber 60 in the figure, a body portion 63 is formed integrally with the guide projections 32a and 32b of the blade holder 30 and the holding claws 33a and 33b. A lip portion 64 that contacts the windshield 11 is integrally formed on the lower side of the body portion 63 in the drawing, and the lip portion 64 and the body portion 63 are the front of the lip portion 64 at the time of wiping. They are connected to each other by a neck portion 65 for smoothly performing an inclination operation (inversion operation) with respect to the glass 11.

  As shown in FIG. 11, the wiper blade 17 employs a so-called U-hook type mounting structure that is rotatably mounted on a substantially U-shaped bent portion 23 a. With the bent portion 23a of the arm piece 23 mounted on the main body 41 of the arm mounting member 40, the arm support member 50 is tilted toward the arm piece 23 from the state indicated by the broken line in the drawing. As a result, the projecting portion 54 of the arm support member 50 is interposed and locked in the slit 24e of the piece cover 24. Accordingly, the front wall surface 54 b of the protruding portion 54 is brought into contact with the outer peripheral surface of the bent portion 23 a of the arm piece 23, and the bent portion 23 a is supported between the protruding portion 54 and the main body portion 41.

  The bent cover portion 24d of the piece cover 24 enters the gap R (see FIG. 12) of the portion of the support portion 53 of the arm support member 50 excluding the protrusion portion 54, whereby the protrusion of the support portion 53 is caused. The portions other than the portion 54 slide with respect to the bent cover portion 24d of the piece cover 24.

  In a state where the bent portion 23a is supported between the projecting portion 54 and the main body portion 41, that is, in the state shown in FIG. 11, the distal end side surface Sc of the piece cover 24 and the proximal end side surface Sd of the arm support member 50 are substantially the same surface. Formed on top. As described above, the thickness dimension of the distal end side of the piece cover 24 is set so that the distal end side surface Sc and the proximal end side surface Sd are formed on substantially the same plane. Thereby, similarly to the relationship between the retainer 22 and the piece cover 24, the step between the piece cover 24 and the arm support member 50 is not noticeable in appearance.

  The projecting portion 54 is urged with a predetermined pressing force (contact force) toward the bent portion 23a side of the arm piece 23 due to elastic deformation of the support portion 53, whereby the wiper blade 17 in the twisting direction with respect to the wiper arm 15 is urged. It is designed to prevent rattling. Here, by appropriately adjusting the protruding amount of the protruding portion 54, the pressing force of the protruding portion 54 with respect to the bent portion 23a is adjusted, so that the backlash of the wiper blade 17 with respect to the wiper arm 15 can be adjusted.

  As shown in FIG. 12, for example, due to the weight of snow or the like that has accumulated on the windshield 11 (see FIG. 1), the wiper blade 17 receives a stress F (arrow in the figure) about the center C of the wiper arm 15. There is a case. In this case, in the present embodiment, the front wall surface 54b of the protruding portion 54 presses the outer peripheral surface of the bent portion 23a of the arm piece 23 with a relatively large pressing force, and a gap on both sides of the protruding portion 54. Since the bent cover portion 24d of the piece cover 24 is inserted into R, the displacement of the wiper blade 17 in the twisting direction with respect to the wiper arm 15 is suppressed.

  When the wiper blade 17 is removed from the wiper arm 15 when, for example, the blade rubber 60 is replaced, the arm support member 50 is raised to the right in the drawing, as shown by the broken line in FIG. The pressing force to the bent portion 23a of the arm piece 23 due to the above is released, and the wiper blade 17 is slid with respect to the arm piece 23, whereby the wiper blade 17 can be detached from the wiper arm 15.

  As described above in detail, according to the wiper device 20 according to the present embodiment, the arm support member 50 in which the projecting portion 54 that is partially in contact with the outer peripheral surface of the bent portion 23a of the arm piece 23 is provided, Since the bent portion 23a is supported between the protruding portion 54 of the arm supporting member 50 and the arm mounting member 40, a gap R is formed between the arm supporting member 50 excluding the protruding portion 54 and the bent portion 23a. be able to. Therefore, a part of the piece cover 24 can be inserted into the gap R between the arm support member 50 and the bent portion 23a in a state where the contact between the protruding portion 54 and the bent portion 23a is maintained. The yield can be improved in accordance with the presence or absence of the piece cover 24 in the type of mounting structure.

  Moreover, according to the wiper device 20 according to the present embodiment, the piece cover 24 that covers the arm piece 23 is provided, and the protrusion 54 is slidably inserted into the bent cover portion 24d that covers the bent portion 23a of the piece cover 24. Since 24e is formed, the smooth movement of the protrusion 54 with respect to the arm piece 23 can be ensured while preventing the piece cover 24 from being detached from the arm piece 23.

  Furthermore, according to the wiper device 20 according to the present embodiment, the thickness dimension of the base end side of the piece cover 24 is set to the dimension of the step G between the retainer 22 and the arm piece 23. The step G between the arm piece 23 and the arm piece 23 can be made inconspicuous. Therefore, it is possible to improve the appearance of the wiper device 20 and to suppress the resistance acting on the wiper device 20 when receiving the traveling wind.

  In addition, according to the wiper device 20 according to the present embodiment, the distal end side surface Sc of the piece cover 24 and the proximal end side surface Sd of the arm support member 50 are formed on the same plane. Therefore, the step between the piece cover 24 and the arm support member 50 can be made inconspicuous. Therefore, it is possible to suppress the entry of foreign matter such as pebbles that hinder the relative rotation between the piece cover 24 and the arm support member 50.

  Furthermore, according to the wiper device 20 according to the present embodiment, since the piece cover 24 is mounted on the arm piece 23 from the wiping direction of the blade rubber 60, the wiper device 20 is held by gripping the piece cover 24 at the time of car washing or the like. Even if locked back, the piece cover 24 can be prevented from coming off the arm piece 23.

  Further, according to the wiper device 20 according to the present embodiment, the pressing force of the protruding portion 54 against the bent portion 23a is set by adjusting the protruding amount of the protruding portion 54. Therefore, the arm mounting member 40 and the arm supporting member are set. The rattling degree of the arm piece 23 supported between 50 and 50 can be set. Therefore, for example, by using blade rubbers having different length dimensions, it is possible to cope with wiper blades having different wiping resistances to the windshield 11.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the arm piece 23 with the piece cover 24 mounted thereon is shown, but the present invention is not limited to this, and can be applied to a wiper device of a type that does not have the piece cover 24 mounted. .

  In the above embodiment, the wiper device is applied to the front wiper 12. However, the present invention is not limited to this and can be applied to a rear wiper that wipes the rear glass as a windshield.

It is explanatory drawing explaining the front wiper with which the vehicle was mounted | worn. It is an enlarged view which expands and shows the wiper apparatus of FIG. (A), (b) is a perspective view which shows the front end side of a wiper arm. It is the elements on larger scale seen from the lower side of FIG. It is explanatory drawing explaining the mounting method of a piece cover. (A), (b) is an enlarged view which expands and shows the broken-line circle | round | yen D part of FIG. It is a perspective view which shows an arm mounting member. It is a perspective view which shows an arm support member. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is a fragmentary sectional view which follows the CC line of FIG. It is explanatory drawing explaining the press state to the bending part of a protrusion part.

Explanation of symbols

10 Vehicle 11 Windshield (windshield)
12 Front wiper 13 Wiper motor (drive source)
14a Wiper shaft on the driver's seat (rotating shaft)
14b Passenger side wiper shaft (rotating shaft)
15a Driver seat side wiper arm 15b Passenger seat side wiper arm 16 Link mechanism 17a Driver seat side wiper blade 17b Passenger seat side wiper blade 18a Driver seat side wiping range 18b Passenger seat side wiping range 20 Wiper device 21 Arm head 22 Retainer 23 Arm piece 23a Bending Part 23b first convex part 23c second convex part 24 piece cover 24a body part 24b first leg part 24c second leg part 24d bent cover part 24e slit 25a first engagement hole 25b second engagement Hole 26 Small protrusion 30 Blade holder 30a Holder side engaging protrusion 31 Rotating pin 32a, 32b Guide protrusion 33a, 33b Holding claw 34 Abutting protrusion 35 Cover 35a Claw part 35b Metal core 36 Fin 40 Arm mounting member 41 Main body part 42a, 42b arm 43 concave groove 44a, 4b Support pin 45a, 45b Rubber contact part 46 Arm side engagement protrusion 50 Arm support member 51 Mounting cylinder part 52 Main body part 53 Support part 54 Projection part 54a Horizontal wall surface 54b Front wall surface 60 Blade rubber 61 Vertibra 62 Main body part 63 Body part 64 Lip part 65 Neck part G Level difference Sc Front end side Sd Base end side R Clearance

Claims (6)

A wiper device having a blade holder to which a base end side is attached to a rotating shaft driven by a driving source and a blade rubber for wiping the windshield to the tip side is attached,
An arm head fixed to the pivot shaft;
A retainer rotatably mounted on the arm head;
An arm piece having a proximal end attached to the retainer and a bent portion formed on the distal end;
An arm mounting member that is rotatably mounted on the blade holder and is mounted inside the bent portion;
A wiper device comprising: an arm support member provided on the arm mounting member so as to be rotatable, and having a protruding portion that is in partial contact with the outer peripheral surface of the bent portion.   2. The wiper device according to claim 1, wherein a piece cover that covers the arm piece is provided, and a slit is formed in a tip portion that covers the bent portion of the piece cover so that the protruding portion can slide freely. apparatus.   The wiper device according to claim 2, wherein a thickness dimension of the base end side of the piece cover is set to a step dimension between the retainer and the arm piece.   4. The wiper device according to claim 2, wherein a thickness dimension on a distal end side of the piece cover is set such that a distal end side surface of the piece cover and a proximal end side surface of the arm support member are formed on the same plane. Wiper device characterized by.   The wiper apparatus of any one of Claims 2-4 WHEREIN: The said piece cover is mounted | worn with the said arm piece from the wiping direction of the said blade rubber, The wiper apparatus characterized by the above-mentioned.   6. The wiper device according to claim 1, wherein a contact force of the protruding portion with respect to the bent portion is set by adjusting a protruding amount of the protruding portion.

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