WO2022215405A1 - Balai d'essuie-glace - Google Patents

Balai d'essuie-glace Download PDF

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Publication number
WO2022215405A1
WO2022215405A1 PCT/JP2022/009624 JP2022009624W WO2022215405A1 WO 2022215405 A1 WO2022215405 A1 WO 2022215405A1 JP 2022009624 W JP2022009624 W JP 2022009624W WO 2022215405 A1 WO2022215405 A1 WO 2022215405A1
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WO
WIPO (PCT)
Prior art keywords
wall
vertebra
wiper blade
side wall
arm
Prior art date
Application number
PCT/JP2022/009624
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English (en)
Japanese (ja)
Inventor
伸敬 中島
Original Assignee
株式会社ミツバ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ミツバ filed Critical 株式会社ミツバ
Publication of WO2022215405A1 publication Critical patent/WO2022215405A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/38—Wiper blades

Definitions

  • the present invention relates to a wiper blade that is attached to a wiper arm and wipes the windshield.
  • the wiper blade is equipped with a blade rubber for wiping water off the windshield, which is the wiping surface of the vehicle, and a vertebra that presses the blade rubber against the windshield.
  • a wiper blade as described in Patent Document 1, there is a form provided with a blade body composed of a backing as a vertebra and a case in which the backing is incorporated.
  • a connection lever is provided on the blade body, and the wiper arm is connected to a clip rotatably attached to the connection lever.
  • a support part as a movement restricting member is attached to the connecting lever in order to restrict the longitudinal movement of the vertebra with respect to the connecting lever.
  • the support part has a central portion that contacts the backing and arm portions at both ends thereof.
  • the movement of the connecting lever is restricted by aligning them.
  • An object of the present invention is to improve the ease of assembly of wiper blades.
  • a wiper blade according to the present invention is a wiper blade attached to a wiper arm that is oscillatingly driven to perform a reciprocating wiping action on a wiping surface, comprising: an arm connecting member connected to the wiper arm; a vertebra to which a portion is attached; a stopper attached to the arm connecting member and the vertebra; and a blade rubber attached to the vertebra for wiping the wiping surface, wherein the arm connecting member is attached to the vertebra.
  • Two side wall portions which are arranged opposite to each other with a gap in the width direction, each having a groove, and a base wall portion which is arranged between the two side wall portions and integrally provided with the two side wall portions.
  • the stopper includes a first mounting wall inserted into the groove of one of the side walls, a second mounting wall housed in the groove of the other side wall, and the second a bottom wall portion disposed at the vertebra-side end portion of one mounting wall and the second mounting wall and provided integrally with the first mounting wall and the second mounting wall; and a protrusion protruding toward the vertebrae, the vertebrae having a positioning hole into which the protrusions are inserted.
  • the stopper for restricting the movement of the vertebra with respect to the arm connecting member is assembled to the holder by inserting the mounting wall of the stopper into the groove provided in the side wall of the arm connecting member, so that the wiper blade can be easily assembled. , and the assembly workability can be improved.
  • FIG. 2 is an enlarged perspective view of the central portion of the wiper blade of Figure 1;
  • FIG. 3 is a perspective view showing the back side of FIG. 2;
  • 2 is an enlarged cross-sectional view taken along line AA in FIG. 1;
  • FIG. Figure 3 is a perspective view of the central portion of the wiper blade with the holder shown in Figure 2 removed;
  • FIG. 6 is a perspective view showing the surface side of the stopper shown in FIG. 5;
  • It is a perspective view which shows the back side of a stopper. 3 is an enlarged cross-sectional view taken along line BB in FIG. 2;
  • FIG. 3 is an enlarged cross-sectional view taken along line CC in FIG. 2;
  • FIG. 3 is an enlarged cross-sectional view taken along line DD in FIG. 2;
  • FIG. 4 is a plan view showing a holder and stoppers attached to the holder;
  • FIG. 10 is a plan view showing a state in which a stopper according to another embodiment is attached to a holder;
  • the term “longitudinal direction” used below refers to the longitudinal direction of the wiper blade 10 (horizontal direction in FIGS. 11 and 12), which is the same direction as the longitudinal direction of the blade body 25 and the vertebrae 12a and 12b.
  • the “width direction” refers to the width direction of the wiper blade 10 (horizontal direction in FIGS. 4, 8 to 10), which is the same as the width direction of the blade body 25 and the vertebrae 12a, 12b.
  • the wiper blade 10 includes a blade rubber 11 and two vertebrae 12a, 12b.
  • the blade rubber 11 is made of rubber and manufactured by compression molding, extrusion molding, or the like.
  • the vertebrae 12a and 12b are plate springs made of stainless steel plates or the like, and the blade rubber 11 is arranged between the two vertebrae 12a and 12b.
  • the blade rubber 11 has a body portion 14 provided with a holding groove 13 into which the widthwise inner portions of the vertibras 12a and 12b are inserted, and a lip portion 15 that contacts the windshield (not shown).
  • a neck portion 16 is provided between the body portion 14 and the lip portion 15 .
  • the neck portion 16 is narrower than the lip portion 15 and has more flexibility than the lip portion 15 .
  • the lip portion 15 is tilted by the movement of the blade rubber 11 in the outward and return directions, and rainwater, dust, etc. adhering to the window glass are wiped away.
  • a case 17 is attached to the vertebrae 12a and 12b except for the central portion in the longitudinal direction.
  • the case 17, as shown in FIG. It has a fin portion 17b integrally provided on the surface side of the base portion 17a.
  • the case base 17a is provided with a holding groove 18 into which the widthwise outer portions of the vertebrae 12a and 12b are inserted, and the vertebrae 12a and 12b are covered by the case 17.
  • the case base portion 17a is made of a high-hardness resin material such as plastic
  • the fin portion 17b is made of an elastic material, such as elastomer, which is lower in hardness than the case base portion 17a.
  • the case 17 has a case base portion 17a with high hardness and a fin portion 17b with low hardness, which are integrally formed by two-color molding.
  • the boundary between the case base portion 17a and the fin portion 17b is indicated by a dashed line.
  • both ends of the wiper blade 10 are provided with caps 19, and the caps 19 are provided with protrusions that are inserted into mounting holes (not shown) provided in the vertebrae 12a and 12b. .
  • a cap 19 covers both ends of the vertebrae 12 a and 12 b and the outer end of the case 17 .
  • a holder 20 (arm connecting member) made of resin is attached to the central portion in the longitudinal direction of the vertibras 12a and 12b.
  • the holder 20 is arranged between two side walls 21 and 22 facing each other with a gap in the width direction of the vertibras 12a and 12b.
  • a base wall portion 23 provided integrally with the side wall portions 21 and 22 .
  • the base wall portion 23 is integrally provided with a fixed wall 24 that partially covers the rear side of the vertebrae 12a and 12b.
  • the side walls 21 and 22 are provided with housing grooves 44 and 45 (groove portions) into which stoppers 40 (to be described later) are inserted.
  • the longitudinally inner ends of the two left and right cases 17 are covered with holders 20, as shown in FIGS.
  • the blade body 25 is configured by the vertibras 12a and 12b, the case 17, the cap 19, and the holder 20.
  • the holder 20 is connected to the distal end portion of the wiper arm 26 indicated by the two-dot chain line in FIG. 1 via a clip 28 which will be described later.
  • the base end of the wiper arm 26 is fixed to a pivot shaft that is oscillatingly driven by a wiper motor (not shown), and the blade body 25 is oscillated through the wiper arm 26 by the drive of the wiper motor to perform a reciprocating wiping operation. As a result, rainwater, dust, etc. adhering to the windshield, rear glass, etc. of the vehicle are wiped away.
  • the blade rubber 11 contacts the windshield and the fin portion 17b of the case 17 faces away from the windshield.
  • the windshield side of the blade body is defined as the rear side
  • the side of the blade body 25 opposite to the windshield is defined as the front side.
  • the vertibras 12a and 12b are previously curved with a predetermined curvature in a free state where no external force is applied. Specifically, the curvature of the vertebrae 12a, 12b is set to a curvature smaller than the curvature of the window glass. Therefore, when the wiper arm 26 presses the blade main body 25 against the windshield, the vertebrae 12a and 12b impart elastic force to the blade rubber 11 in the direction toward the wiping surface, and the lip portion 15 is brought into close contact with the windshield over the entire longitudinal direction. be. As a result, the window glass can be reliably wiped off. 1, the blade body 25 with the vertices 12a, 12b is shown straight.
  • FIG. 8 is an enlarged cross-sectional view taken along line BB in FIG. 2, and as shown in FIG. , and the support pin 27 extends in the width direction of the blade body 25 .
  • the support pin 27 is integrally insert-molded with the resin holder 20 when the holder 20 is molded. Both ends of the support pin 27 are provided with large-diameter portions 27a and 27b embedded in the side wall portions 21 and 22, and the outer peripheral surfaces of the large-diameter portions 27a and 27b have adhesiveness to the resin material forming the holder 20. In order to increase the .sigma.
  • a resin clip 28 (arm connecting member) is rotatably attached to the support pin 27 .
  • the clip 28 has sidewalls 31, 32 disposed inside and extending along the sidewalls 21, 22 of the holder 20, respectively.
  • a ceiling wall portion 33 is integrally provided between the portions 31 and 32 , and a pin support portion 34 is integrally provided at one end of the ceiling wall portion 33 .
  • the pin support portion 34 is provided with a notch portion 36 having a width smaller than the inner diameter of the inner surface 35 of the pin support portion 34 .
  • clip 28 is assembled to holder 20 .
  • the tip of the wiper arm 26 includes a portion extending along the outer surface of the top wall portion 33 and a folded portion (not shown) that curves from the surface side to the back side of the pin support portion 34 and extends to the back surface of the top wall portion 33. and are provided.
  • the folded portion (not shown) and the clip 28 are engaged by engaging portions (not shown) provided respectively, and the wiper arm 2 is connected to the clip 28 .
  • a stopper 40 is attached to the holder 20 as shown in FIG. As shown in FIGS. 5 and 6, the stopper 40 has a first mounting wall 41 and a second mounting wall 42 facing each other across the width of the blade body 25. It is arranged between the walls 41 and 42 and has a bottom wall portion 43 provided integrally with the mounting walls 41 and 42 . Both ends of the bottom wall portion 43 along the width direction of the blade body 25 are connected to the rear side ends of the first mounting wall 41 and the second mounting wall 42, respectively, and extend along the width direction of the blade body 25.
  • the cross-sectional shape of the stopper 40 is U-shaped.
  • the first mounting wall 41 of the stopper 40 is inserted into the housing groove 44 of the holder 20 and the second mounting wall 42 is inserted into the housing groove 45 of the holder 20 .
  • the stopper 40 is fixed to the holder 20 and restricted from moving in the longitudinal direction.
  • a mounting wall 41 attached to one side wall portion 21 is referred to as a first mounting wall 41
  • a mounting wall 42 attached to the other side wall portion 22 is referred to as a second mounting wall 42 .
  • the clip 28 is arranged between the mounting walls 41 and 42 in the width direction of the blade body 25 .
  • clearances are provided between the mounting walls 41 and 42 and the side wall portions 31 and 32 of the clip 28 to such an extent that the rotation of the clip 28 with respect to the holder 20 is not hindered.
  • FIG. 6 is a perspective view showing the front side of the stopper 40 shown in FIG. 5, and
  • FIG. 7 is a perspective view showing the rear side of the stopper 40.
  • FIG. 9 is an enlarged sectional view along line CC in FIG.
  • the bottom wall portion 43 of the stopper 40 is provided with two projections 46a and 46b at one end in the longitudinal direction of the blade body 25. , 46b protrude from the rear surface of the bottom wall portion 43 toward the vertices 12a and 12b.
  • the projections 46a and 46b are inserted into positioning holes 47a and 47b (positioning holes) formed in the vertebrae 12a and 12b, respectively. Therefore, the vertibras 12a and 12b are fixed to the stopper 40 fixed to the holder 20, and the longitudinal movement of the partibras 12a and 12b with respect to the holder 20 is prevented.
  • the stopper 40 can be attached to the holder 20 by inserting the attachment walls 41 and 42 into the accommodation grooves 44 and 45 provided in the side wall portions 21 and 22 of the holder 20, so that the stopper 40 can be easily attached to the holder. 20 can be installed.
  • the bottom wall portion 43 is provided at the rear end portion of the mounting walls 41 and 42 , a space for a worker to grip the mounting walls 41 and 42 when attaching the stopper 40 to the holder 20 can be secured. Therefore, the assembling workability of the wiper blade 10 can be improved.
  • FIG. 10 is an enlarged cross-sectional view along line DD in FIG. 2.
  • Engagement projections 48 and 49 are provided on the inner surfaces of side wall portions 21 and 22 of holder 20, respectively, so as to protrude inward in the width direction.
  • Inclined surfaces 48a, 49a inclined toward the vertibras 12a, 12b are formed on the surface side of the engaging projections 48, 49, and engaging surfaces 48b, 49b are formed on the rear side thereof.
  • the amount of protrusion of the engaging protrusion 48 toward the side wall 22 increases toward the back side
  • the amount of protrusion of the engaging protrusion 49 toward the side wall 21 increases toward the back side.
  • Mounting walls 41 and 42 of stopper 40 are provided with engaging arms 51 and 52 (engaging concave portions).
  • the respective engaging arms 51 and 52 are displaced in the width direction of the blade body 25 with the central portion of the mounting walls 41 and 42 in FIG. 6 as the displacement center P. It has two freely movable arm pieces 53, and the distal ends of the arm pieces 53 protrude inside the stopper 40 toward the vertebrae 12a and 12b.
  • engaging pieces 54a and 54b are provided as shown in FIG.
  • the positions of the engaging pieces 54a and 54b in the width direction correspond to the positions of the inclined surfaces 48a and 49a of the engaging protrusions 48 and 49, respectively, as shown in FIG. 42 is inserted into the receiving grooves 44, 45 of the holder 20, the engaging pieces 54a, 54b of the engaging arms 51, 52 are guided by the inclined surfaces 48a, 49b and are displaced inwardly of the stopper 40.
  • the mounting walls 41, 42 are inserted into the housing grooves 44, 45, the engaging pieces 54a, 54b are engaged or hooked on the engaging surfaces 48b, 49b as shown in FIG. Snap-fitting the engagement arms 51 and 52 to the engagement projections 48 and 49 prevents the stopper 40 from coming off the holder 20 .
  • the engaging arms 51 and 52 have a center of displacement P that is substantially central in the vertical direction of the mounting walls 41 and 42, and have a long dimension up to the engaging pieces 54a and 54b.
  • the amount of displacement of the tips of the engaging arms 51 and 52 when inserting the stoppers 41 and 42 into the receiving grooves 44 and 45 can be increased, and the stopper 40 can be easily attached to the holder 20 with a small pushing force.
  • the engagement areas between the engagement pieces 54a, 54b and the engagement surfaces 48b, 49b can be increased, and the stopper 40 can be reliably prevented from coming off the holder 20.
  • each engaging arm 51, 52 is formed by two arm pieces 53, even if the engaging area of the engaging piece 54a, 54b is increased, the engaging arm 51, 52 at the time of insertion can be made small. It can be easily displaced by pressing force.
  • the longitudinal central portions of the vertebrae 12a and 12b are arranged between the base wall portion 23 and the fixed wall 24 of the holder 20.
  • the mounting walls 41 , 42 of the stopper 40 are inserted into the receiving grooves 44 , 45 provided in the side walls 21 , 22 of the holder 20 .
  • the projections 46a and 46b of the stopper 40 are inserted into the positioning holes 47a and 47b of the vertebrae 12a and 12b, and the holder 20 is fixed to the vertebrae 12a and 12b.
  • the clip 28 is attached to the support pin 27 of the holder 20, and the clip 28 is arranged between the mounting walls 41 and 42 of the stopper 40 as shown in FIG. This prevents the engagement pieces 54a, 54b of the engagement arms 51, 52 from coming off the engagement surfaces 48b, 49b.
  • the cases 17 are inserted from both sides in the longitudinal direction of the vertibras 12a and 12b, and the inner ends of the cases 17 in the longitudinal direction are placed at positions where they are covered with both ends in the longitudinal direction of the holder 20.
  • a cap 19 is attached to one longitudinal end of each of the vertibras 12a and 12b.
  • the vertebrae 12a, 12b are inserted into the holding grooves 13 of the blade rubber 11 from the other end in the longitudinal direction of the vertebrae 12a, 12b toward the one end in the longitudinal direction.
  • the cap 19 is attached to the other end in the longitudinal direction of the vertebrae 12a, 12b.
  • the stopper 40 can be fixed to the holder 20 by providing the engaging arms on at least one of the mounting walls. .
  • FIG. 11 is a plan view showing the holder 20 and the stopper 40 attached to the holder 20.
  • the mounting walls 41 and 42 have projecting portions 55 projecting outward in the longitudinal direction from the bottom wall portion 43 at both ends in the longitudinal direction. That is, the width dimension of the mounting walls 41 and 42 in the longitudinal direction of the blade body 25 is set larger than the width dimension of the bottom wall portion 43 .
  • the side wall portions 21 and 22 of the holder 20 are provided with guide portions 56 that protrude inward in the longitudinal direction from the width direction inner end portions and the longitudinal direction end portions of the accommodation grooves 44 and 45 .
  • the projecting portion 55 is arranged between the guide portion 56 and the accommodation grooves 44 and 45 in the width direction of the blade body 25 . Accordingly, when attaching the stopper 40 to the holder 20 , the mounting walls 41 and 42 can be guided by the guide portions 56 and easily inserted into the receiving grooves 44 and 45 . Moreover, since the mounting walls 41 and 42 are prevented from being displaced so as to fall inward by the guide portion 56, it is possible to reliably prevent the stopper 40 from coming off.
  • FIG. 12 is a plan view showing a stopper 40 of another embodiment, and in FIG. 12, members common to the stopper 40 described above are denoted by the same reference numerals.
  • the width dimension of the first mounting wall 41 in the longitudinal direction of the blade body 25 is set larger than the width dimension of the second mounting wall 42 by the dimension L.
  • the width dimensions of the receiving grooves 44 and 45 into which the mounting walls 41 and 42 are inserted are also different corresponding to the width dimensions of the mounting walls 41 and 42, and the width dimension of the mounting wall 41 is longer than the mounting wall 42. is set. In this way, by making the first mounting wall 41 and the second mounting wall 42 asymmetrical with respect to the center line of the blade body 25 in the width direction of the bottom wall portion 43, the direction of the stopper 40 is incorrect.
  • the stopper 40 is attached to the holder 20, the protrusions 46a and 46b are securely inserted into the positioning holes 47a and 47b, and the engagement pieces 54a and 54b are engaged with the engagement surfaces 48b and 49b. engaged.
  • the widthwise dimension of the projecting portion 55 may be increased.
  • the wiper blade 10 is applied to a wiper device for removing rainwater and dust adhering to the windshield and rear glass of a vehicle such as an automobile.
  • the present invention is not limited to this, and can be applied to wiper devices mounted on ships, aircraft, railway vehicles, and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

Cette invention vise à faciliter l'assemblage d'un balai d'essuie-glace. Un balai d'essuie-glace (10) comprend un élément de liaison de bras (20), des vertèbres (12a, 12b), une butée (40) et un caoutchouc de balai (11). L'élément de liaison de bras (20) a deux parties de paroi latérale (21, 22) qui sont chacune pourvues d'une partie rainure et qui sont disposées en regard l'une de l'autre à travers un espace dans la direction de la largeur des vertèbres (12a, 12b) et une partie de paroi de base (23) disposée d'un seul tenant avec les deux parties de paroi latérale (21, 22). La butée (40) a une première paroi de fixation (41) insérée dans une partie rainure (44), une seconde paroi de fixation (42) insérée dans une partie rainure (45), une partie de paroi inférieure disposée sur les parties d'extrémité côté vertèbres de la paroi de fixation (41) et la paroi de fixation (42) et disposée d'un seul tenant avec la paroi de fixation (41) et la paroi de fixation (42) et des saillies qui font saillie vers les vertèbres. Les vertèbres ont des trous de positionnement dans lesquels les saillies sont insérées.
PCT/JP2022/009624 2021-04-07 2022-03-07 Balai d'essuie-glace WO2022215405A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-065318 2021-04-07
JP2021065318A JP2022160850A (ja) 2021-04-07 2021-04-07 ワイパブレード

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WO2022215405A1 true WO2022215405A1 (fr) 2022-10-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106553621A (zh) * 2016-09-28 2017-04-05 罗向东 雨刷

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3124304U (ja) * 2006-06-02 2006-08-10 復岡有限公司 ワイパー構造
JP2012136150A (ja) * 2010-12-27 2012-07-19 Mitsuba Corp ワイパブレード
US20120317741A1 (en) * 2009-11-17 2012-12-20 Robert Bosch Gmbh Wiper blade of flat beam construction
JP2013082431A (ja) * 2011-09-26 2013-05-09 Asmo Co Ltd ワイパブレード
JP2020179756A (ja) * 2019-04-25 2020-11-05 株式会社ミツバ ワイパブレード

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3124304U (ja) * 2006-06-02 2006-08-10 復岡有限公司 ワイパー構造
US20120317741A1 (en) * 2009-11-17 2012-12-20 Robert Bosch Gmbh Wiper blade of flat beam construction
JP2012136150A (ja) * 2010-12-27 2012-07-19 Mitsuba Corp ワイパブレード
JP2013082431A (ja) * 2011-09-26 2013-05-09 Asmo Co Ltd ワイパブレード
JP2020179756A (ja) * 2019-04-25 2020-11-05 株式会社ミツバ ワイパブレード

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106553621A (zh) * 2016-09-28 2017-04-05 罗向东 雨刷

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