WO2015037309A1 - ワイパブレード及びワイパブレードの製造方法 - Google Patents
ワイパブレード及びワイパブレードの製造方法 Download PDFInfo
- Publication number
- WO2015037309A1 WO2015037309A1 PCT/JP2014/067395 JP2014067395W WO2015037309A1 WO 2015037309 A1 WO2015037309 A1 WO 2015037309A1 JP 2014067395 W JP2014067395 W JP 2014067395W WO 2015037309 A1 WO2015037309 A1 WO 2015037309A1
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- WIPO (PCT)
- Prior art keywords
- backing
- rubber
- blade
- longitudinal direction
- wiper
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- 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
- B60S1/3806—Means, or measures taken, for influencing the aerodynamic quality of the wiper blades
- B60S1/381—Spoilers mounted on the squeegee or on the vertebra
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- 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
- B60S1/3848—Flat-type wiper blade, i.e. without harness
- B60S1/3849—Connectors therefor; Connection to wiper arm; Attached to blade
- B60S1/3851—Mounting of connector to blade assembly
- B60S1/3856—Gripping the blade
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- 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
- B60S1/3848—Flat-type wiper blade, i.e. without harness
- B60S1/3849—Connectors therefor; Connection to wiper arm; Attached to blade
- B60S1/3865—Connectors having an integral pivot pin for connection with the wiper arm
- B60S1/3867—Connectors having an integral pivot pin for connection with the wiper arm pin formed on the interior of side walls
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- 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
- B60S1/3848—Flat-type wiper blade, i.e. without harness
- B60S1/3874—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra
- B60S1/3875—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section
- B60S1/3879—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section placed in side grooves in the squeegee
-
- 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
- B60S1/3848—Flat-type wiper blade, i.e. without harness
- B60S1/3874—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra
- B60S1/3875—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section
- B60S1/3881—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section in additional element, e.g. spoiler
-
- 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
- B60S1/40—Connections between blades and arms
- B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
- B60S1/4045—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end
- B60S1/4048—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C2045/0093—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of articles provided with an attaching element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/305—Wipers
-
- 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
- B60S1/40—Connections between blades and arms
- B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
- B60S1/4045—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end
- B60S1/4048—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm
- B60S2001/4051—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm the intermediate element engaging the side walls of the arm
-
- 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
- B60S1/40—Connections between blades and arms
- B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
- B60S1/4045—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end
- B60S1/4048—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm
- B60S2001/4054—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm the intermediate element engaging the back part of the arm
Definitions
- the present invention relates to a wiper for a vehicle, and relates to a wiper blade and a method for manufacturing the wiper blade.
- a wiper for a vehicle includes a wiper arm and a wiper blade connected to the wiper arm.
- a wiper blade there is a wiper blade that includes a connecting lever that holds a longitudinal intermediate portion of a blade rubber and a longitudinal intermediate portion of a backing (for example, see Patent Document 1).
- the connecting lever is made of a resin material, penetrates along the longitudinal direction of the backing, and is accommodated and held so as to surround the backing.
- the connecting lever as described above is generally manufactured by injection molding.
- the portion in which the backing is accommodated in order to easily remove the mold (slide core), generally one draft angle continuous from one end to the other end in the longitudinal direction of the portion in which the backing is accommodated
- the injection molding is performed so that is formed.
- connection lever having the draft angle as described above the urging force from the wiper arm to be connected is easily transmitted to one side in the longitudinal direction of the backing, and there is a risk that the wiping property is deteriorated. .
- An object of the present invention is to provide a method of manufacturing a wiper blade and a rubber holder that can easily transmit the urging force from the wiper arm evenly in the longitudinal direction of the backing and can improve the wiping property.
- a wiper blade extends along the longitudinal direction, and includes a blade rubber, a leaf spring-like backing, and a rubber holder.
- the blade rubber wipes the wiping surface.
- the backing imparts rigidity and elasticity to the blade rubber.
- the rubber holder holds an intermediate portion of the blade rubber in the longitudinal direction and an intermediate portion of the backing in the longitudinal direction.
- the rubber holder has a backing receiving hole for receiving and holding the backing.
- the backing accommodation hole penetrates the rubber holder along the longitudinal direction. A parting line is set at the center of the backing housing hole in the longitudinal direction.
- FIG. 2 is a partially exploded perspective view of the wiper of FIG. 1.
- FIG. 3 is a perspective view of a rubber holder and a clip in FIG. 2.
- FIG. 6 is a cross-sectional view taken along line AA in FIG. 5.
- the schematic diagram for demonstrating the draft and rubber side draft in another example. 1 is a cross-sectional view of a wiper blade in one embodiment.
- Longitudinal direction refers to the longitudinal direction of the wiper blade 3 unless otherwise specified.
- the longitudinal directions of the blade rubber 11, the backing 12, the rubber holder 13, and the like indicate substantially the same direction as the longitudinal direction of the wiper blade 3.
- a vehicle wiper 1 is for wiping raindrops and the like adhering to a windshield as a wiping surface of an automobile, and includes a wiper arm 2 and a wiper blade connected to the wiper arm 2. 3.
- the wiper arm 2 is fixed to a pivot shaft (not shown) whose base end is reciprocated at a predetermined angle by a driving force of a wiper motor (not shown), and reciprocally swings as the pivot shaft reciprocates.
- the wiper arm 2 is urged at its distal end connecting portion 4 toward the windshield (wiping surface) by an urging mechanism (not shown).
- the wiper blade 3 is connected to the tip connecting portion 4 of the wiper arm 2.
- the wiper blade 3 includes a long blade rubber 11 for wiping the wiping surface (front glass), and rigidity (mainly the wiping direction of the wiper blade 3).
- Plate spring-like backing 12 for imparting lateral rigidity, which is the rigidity of the blade rubber 11, and longitudinal elasticity, which is mainly elastic in the direction of the wiping surface of the blade rubber 11, and the longitudinal direction of the upper portion 11a of the blade rubber 11.
- a rubber holder 13 for holding the intermediate portion in the longitudinal direction of the backing 12.
- both longitudinal sides protruding from the rubber holder 13 are covered with a pair of soft cases 14, and both ends are covered with caps 15 (see FIG. 1).
- the backing 12 is formed to have substantially the same length as the blade rubber 11 and is wider than the blade rubber 11, and is curved when viewed from the side (convex on the opposite side to the wiping surface and curved in the longitudinal direction). Is formed. Thereby, when the wiper blade 3 is urged to the curved wiping surface (front glass) side, the backing 12 favorably contacts the wiping surface (front glass) with the wiping portion 11b at the lower end of the blade rubber 11.
- the wiper case 14 is made of a soft resin material or rubber so as not to hinder the action of the backing 12.
- the wiper blade 3 includes a clip 16 as a wiper arm connecting member that is connected to the rubber holder 13 so as to be rotatable around an axis along the width direction of the blade rubber 11.
- the rubber holder 13 is made of a resin material, and a shaft insertion hole 13a as a support portion penetrating in the width direction is formed in the center portion in the longitudinal direction and in the center portion in the vertical direction.
- the clip 16 is made of a resin material, a pair of side walls 16a extending along both side surfaces of the rubber holder 13, an upper wall 16b connecting the upper ends of the side walls 16a and extending along the upper surface of the rubber holder 13, A support shaft 16c that protrudes coaxially from the inner surface of the side wall 16a, is inserted into the shaft insertion hole 13a, and rotatably supports the clip 16 with respect to the rubber holder 13.
- the tip connecting portion 4 of the wiper arm 2 is fitted to the clip 16.
- the configuration in which the rubber holder 13 holds the backing 12 and the upper portion 11a of the blade rubber 11 will be described in detail.
- a lower portion of the rubber holder 13 is formed with a backing accommodation hole 13b for accommodating and holding the backing 12 by surrounding it.
- the backing accommodation hole 13b penetrates the rubber holder 13 along the longitudinal direction.
- a lower portion of the rubber holder 13 is formed with a blade rubber accommodation hole 13c for accommodating and holding the upper portion 11a of the blade rubber 11.
- the blade rubber accommodating hole 13c is provided at a position spaced downward from the backing accommodating hole 13b.
- the blade rubber accommodating hole 13c penetrates the rubber holder 13 along the longitudinal direction.
- the center in the width direction of the blade rubber accommodating hole 13 c is opened at the lower portion of the rubber holder 13.
- the width of the upper part 11a of the blade rubber 11 of this embodiment is smaller than the width of the backing 12, the width of the blade rubber accommodating hole 13c is formed narrower than the width of the backing accommodating hole 13b.
- the rubber holder 13 has a wall portion 13d located between the backing housing hole 13b and the blade rubber housing hole 13c.
- the wall portion 13d is formed with a through portion 13e that vertically penetrates a part of the wall portion 13d.
- the through portion 13e of the present embodiment is located at the center in the width direction of the wall portion 13d and extends over the entire area of the wall portion 13d in the longitudinal direction.
- draft angles 13f and 13g are formed in the backing housing hole 13b.
- a mating surface of slide cores 21 and 22 constituting an injection molding die to be described later is located at the center in the longitudinal direction of the backing housing hole 13b, and a parting line P1 (see FIG. 6) is set here.
- the And draft angle 13f, 13g is located in the both sides of the center part of the backing accommodation hole 13b in a longitudinal direction.
- the drafts 13 f and 13 g extend downward from both sides of the central portion of the backing housing hole 13 b toward the outside.
- the parting line P1 is set within a range W1 corresponding to the shaft insertion hole 13a in the longitudinal direction of the backing housing hole 13b.
- the drafts 13f and 13g extend from the range W1 toward both sides in the longitudinal direction, that is, outward. More specifically, the parting line P1 of the present embodiment is set at a position (directly below) corresponding to the axis X of the shaft insertion hole 13a.
- the drafts 13f and 13g extend from the position corresponding to the axis X in the longitudinal direction (directly below) toward both sides in the longitudinal direction. In the present embodiment, the position (directly below) corresponding to the axis X coincides with the center position of the backing accommodation hole 13b in the longitudinal direction.
- the draft angles 13f and 13g of the present embodiment are formed in a straight line inclined with respect to a straight line along the longitudinal direction when viewed from the side.
- rubber side drafts 13h and 13i are formed in the blade rubber accommodating hole 13c. Similar to the backing housing hole 13b, the mating surfaces of the slide cores 21 and 22 constituting the injection mold are located at the longitudinal center of the blade rubber housing hole 13c, and the rubber side parting line P2 ( Is set). The rubber side drafts 13h and 13i are located on both sides of the central portion of the blade rubber receiving hole 13c in the longitudinal direction. The rubber side drafts 13h and 13i extend downward from both sides of the central portion of the blade rubber accommodating hole 13c toward the outside. In the present embodiment, the rubber-side parting line P2 is set within a range W1 corresponding to the shaft insertion hole 13a in the longitudinal direction, like the parting line P1 of the backing housing hole 13b.
- the rubber side drafts 13h, 13i are formed from the position corresponding to the axis X of the blade rubber receiving hole 13c in the longitudinal direction (directly below) toward both sides in the longitudinal direction, that is, toward the outside.
- the slope angles are exaggerated. Yes.
- the backing accommodation hole 13b is formed by injection molding.
- the drafts 13f and 13g are formed on both sides of the central portion of the backing housing hole 13b in the longitudinal direction. As described above, the drafts 13f and 13g are sloped downward toward the outside.
- the rubber side drafts 13h and 13i are also formed at the same time.
- a pair of slide cores 21 and 22 are used.
- the slide core 21 on the one side (left side in FIG. 7) has a draft angle 13f and a rubber draft angle 13h from the side in the longitudinal direction of the backing accommodation hole 13b and the blade rubber accommodation hole 13c. It has the 1st and 2nd protrusion parts 21a and 21b which taper on the other side (right side in FIG. 7) seeing.
- the other (right side in FIG. 7) slide core 22 is formed on the side to form the other draft angle 13g and the rubber side draft angle 13i from the longitudinal intermediate portion of the backing accommodation hole 13b and the blade rubber accommodation hole 13c.
- the first and second projecting portions 22a and 22b that taper on one side (left side in FIG. 7) when viewed from the side.
- the molten resin is filled in the mold in a state where the slide cores 21 and 22 are in contact with each other, and the slide cores 21 and 22 are separated from each other after the molten resin is cured.
- the rubber holder 13 having the rubber accommodating hole 13c is manufactured.
- the blade rubber 11 is positioned at the head portion 11c positioned at the upper portion 11a, the narrow portion 11d positioned at the upper portion 11a and having a width smaller than the head portion 11c and extending downward.
- the wiping portion 11b for wiping the wiping surface and a neck portion 11e for connecting the wiping portion 11b to the upper portion 11a so as to be tiltable are included.
- the wiper case 14 is made of a soft resin material (polypropylene in this embodiment), and includes a case body 41 that holds the upper portion 11a (head portion 11c) of the blade rubber 11 and the backing 12, and a rubber material or an elastomer. And a fin member 42 fixed to the upper portion of the case main body 41.
- the case body 41 includes a substantially rectangular tube-shaped tube portion 41a that accommodates and holds the backing 12, a pair of extending portions 41b that extend downward from the tube portion 41a and cover both front and rear sides of the head portion 11c, and a pair of lower portions Claw portions 41c extending from the lower end of the extending portion 41b to the inner side in the width direction (sides approaching each other).
- the claw portion 41c grips the head portion 11c while facing the lower surface of the head portion 11c.
- each of the extended part 41b has the thick part 41d located in the base end side of this extended part 41b.
- the thick portion 41 d is a portion outside the wiper case 14 in the width direction of the wiper case 14, and is located outside the claw portion 41 c in the width direction of the wiper case 14.
- Thicknesses A1 and A2 in the width direction (left and right direction in FIG. 9) of thick portion 41d are larger than thickness Z (in the height direction) of a portion of cylindrical portion 41a located between backing 12 and head portion 11c. thick.
- the thick portion 41d bends so that the lower extending portion 41b opens between the claw portions 41c with the base end portion of the lower extending portion 41b (the connecting portion to the cylindrical portion 41a and the upper end portion) as a base point. Suppress it.
- the thick portion 41d of the present embodiment has an inclined surface 41e that is inclined so that the width of the thick portion 41d increases toward the top. Specifically, in the cross section in the direction perpendicular to the longitudinal direction of the case body 41 (see FIG.
- the point where the straight line passing through the lower surface of the lower wall portion 41g of the cylinder portion 41a intersects the front outer surface of the case body 41 is A point intersecting the outer surface is defined as a rear edge Q, and the inner side in the width direction of each of the line segments V and Y connecting the front edge K and rear edge Q of the cylindrical portion 41a to the root portion of the claw portion 41c is formed by the soft resin material.
- a downwardly extending portion 41b in which a thick portion 41d is formed by filling in a solid shape is formed. At this time, a surface substantially along the line segments V and Y of the thick portion 41d forms an inclined surface 41e.
- the center line L1 in the width direction of the cylinder portion 41a is offset to the vehicle rear side (right side in FIG. 9) with respect to the center line L2 in the width direction between the claw portions 41c. That is, in the present embodiment, the backing 12 and the blade rubber 11 are held such that the width direction center line L1 of the backing 12 is on the vehicle rear side (right side in FIG. 9) with respect to the width direction center line L2 of the blade rubber 11. Has been.
- a main body fin portion 41f that is inclined downward toward the vehicle front side is formed on the vehicle front side (left side in FIG. 9).
- the main body fin portion 41f in the present embodiment is formed to extend up to an intermediate position in the vertical direction of the lower extension portion 41b.
- the fin member 42 is fixed to the upper surface of the cylindrical portion 41a except for the main body fin portion 41f, and has a fin inclined portion 42a inclined upward toward the vehicle rear side, and a protruding portion 42b protruding upward at the rear end portion of the vehicle. And have.
- the main body fin portion 41f, the fin inclined portion 42a, and the protruding portion 42b act so as to convert the traveling wind during the traveling of the vehicle into the pressing force to the wiping surface side (lower side).
- the wiper blade 3 (excluding the clip 16) can be rotated with respect to the wiper arm 2 and the clip 16 fixed to the tip connecting portion 4.
- the leading end connecting portion 4 of the wiper arm 2 is urged toward the windshield (wiping surface) by an urging mechanism (not shown), so that the urging force is applied to the blade rubber 11 via the clip 16, the rubber holder 13, and the backing 12.
- the wiping portion 11b at the lower end of the blade rubber 11 is pressed and contacted with the windshield (wiping surface) over the entire length in the longitudinal direction. At this time, since the wiper case 14 is soft, the action of the curved backing 12 is not inhibited.
- a wiping operation is performed.
- a parting line P1 is set at the center of the backing accommodation hole 13b in the longitudinal direction. Therefore, compared with the case where a parting line is set at one end in the longitudinal direction, the gap S between the backing accommodation hole 13b and the backing 12 due to the draft can be reduced at the one end side and the other end side in the longitudinal direction. Therefore, it becomes easy to support the backing 12 equally in the longitudinal direction. Therefore, it becomes easy to transmit the urging force from the wiper arm 2 to be connected evenly in the longitudinal direction of the backing 12, and good wiping property can be obtained.
- the maximum width H of the backing receiving hole 13b is made smaller than that in which a parting line is set at one end in the longitudinal direction and a single draft is formed continuously from one end to the other.
- the thickness of the wall 13d can be reduced, the size of the rubber holder 13 in the height direction can be reduced.
- the parting line P1 is set within a range W1 corresponding to the shaft insertion hole 13a in the longitudinal direction.
- the backing accommodating hole 13b has draft angles 13f and 13g located on both sides of the central portion of the backing accommodating hole 13b in the longitudinal direction.
- the drafts 13f and 13g extend outward from the center of the backing receiving hole 13b. Therefore, the gap S between the backing receiving hole 13b and the backing 12 at the position of the parting line P1 set in the range W1 corresponding to the shaft insertion hole 13a is the smallest, and the wiper arm 2 connected via the clip 16 Can be transmitted more uniformly in the longitudinal direction of the backing 12, and the wiping property can be improved.
- the draft angles 13f and 13g of the present embodiment extend from the position of the backing housing hole 13b (below) corresponding to the axis X of the shaft insertion hole 13a in the longitudinal direction toward both sides in the longitudinal direction. Therefore, the gap S between the backing housing hole 13b and the backing 12 is the smallest at a position (directly below) corresponding to the axis X of the shaft insertion hole 13a. Therefore, the urging force from the wiper arm 2 connected via the clip 16 can be more easily transmitted in the longitudinal direction of the backing 12, and the wiping property can be further improved.
- a rubber-side parting line P2 is set at the center of the blade rubber accommodating hole 13c in the longitudinal direction. Therefore, rubber side drafts 13h and 13i are formed from the central portion in the longitudinal direction of the blade rubber accommodating hole 13c toward both sides in the longitudinal direction. Therefore, the maximum height direction width of the blade rubber accommodating hole 13c can be reduced as compared with the case where a rubber-side parting line is set at one end in the longitudinal direction. As a result, for example, since the thickness of the wall portion 13d can be reduced, the size of the rubber holder 13 in the height direction can be reduced.
- the rubber holder 13 has a wall portion 13d located between the backing housing hole 13b and the blade rubber housing hole 13c.
- the wall portion 13d is formed with a through portion 13e that vertically penetrates a part of the wall portion 13d. Therefore, the wall portion 13d can be easily formed thinner than those in which the through portion 13e is not formed. That is, in the case where the through portion 13e is not formed, it is difficult to design a thin shape because the resin wraps around the entire wall portion at the time of molding, but the range (distance) in which the resin wraps around by providing the through portion 13e. ) Can be reduced, so that the thickness can be reduced.
- the penetrating portion 13e is located at the center in the width direction of the wall portion 13d and extends over the entire area of the wall portion 13d in the longitudinal direction. For this reason, the range (distance) in which the resin wraps around can be made as small as possible, while the configuration in which the upper portion 11a of the blade rubber 11 can be favorably pressed on both sides in the width direction of the wall portion 13d. Therefore, the thickness can be further reduced.
- Each of the extending portions 41b has a thick portion 41d located on the proximal end side of the extending portion 41b.
- the thicknesses A1 and A2 in the width direction of the thick portion 41d are thicker than the thickness Z of the portion of the cylindrical portion 41a located between the backing 12 and the head portion 11c. Therefore, for example, compared with the case where the thick portion 41d is not provided (for example, the conventional technique in which the thickness is the same and thin in all locations in consideration of the curved follow-up to the wiping surface), it becomes difficult to spread.
- the blade rubber 11 is difficult to drop off.
- the extended portion is between the claw portions 41c with the base end portion (upper portion) as a base point.
- the blade rubber 11 when the blade rubber 11 is subjected to a large frictional force during wiping or when the blade rubber 11 is cold, When the wiper is to be locked back in a state where it is adhered to the wiping surface, the blade rubber 11 can be prevented from falling off from the wiper case 14.
- the thick part 41d has an inclined surface 41e that is inclined so that its width increases toward the top. Therefore, the base end portion (upper portion) that becomes the base point of bending of the lower extension portion 41b can be strengthened, and for example, when the wiper blade 14 and the entire wiper case 14 are tilted with respect to the wiping surface at the time of wiping or the like. However, it can suppress that the wiper case 14 contacts a wiping surface.
- the center line L1 in the width direction of the cylinder portion 41a is offset toward the vehicle rear side with respect to the center line L2 in the width direction between the claw portions 41c. Therefore, it is possible to reduce the protruding amount of the cylinder portion 41a toward the vehicle front side. As a result, it is possible to suppress an increase in pressure due to traveling wind in the space on the wiping surface side (lower side) of the wiper case 14 protruding to the front side, and it is possible to suppress lifting from the wiping surface.
- the draft angles 13f and 13g are formed in a straight line shape that is inclined with respect to a straight line along the longitudinal direction when viewed from the side.
- Other shapes may be used as long as the mold can be released smoothly.
- the draft may be changed to drafts 31 and 32 that are curved downward from the parting line toward the outside in the longitudinal direction when viewed from the side.
- the rubber side drafts 13h and 13i of the above embodiment are also curved on the rubber side draft with a downward slope from the rubber parting line toward the outside in the longitudinal direction when viewed from the side. 33, 34.
- the slide cores 21 and 22 of the above embodiment used in the manufacturing method are changed to the slide cores 35 and 36 having shapes corresponding to the drafts 31 and 32 and the rubber side drafts 33 and 34. .
- the drafts 13f and 13g are formed from the position corresponding to the axis X of the shaft insertion hole 13a in the longitudinal direction (directly below) toward both sides in the longitudinal direction. Instead, it may be formed from the other position in the longitudinal center of the backing housing hole 13b toward the outside on both sides in the longitudinal direction. In this case, it is preferable that the draft is formed from the range W1 corresponding to the shaft insertion hole 13a in the longitudinal direction toward both sides in the longitudinal direction. In the above embodiment, the drafts 13f and 13g are formed from the parting line P1, but the start positions of the drafts 13f and 13g may not coincide with the parting line P1.
- the rubber side drafts 13h and 13i are directed from the rubber parting line P2 set at a position (directly below) corresponding to the axis X of the shaft insertion hole 13a in the longitudinal direction toward both sides in the longitudinal direction.
- the present invention is not limited to this, and the blade rubber receiving holes 13c may be formed from other positions in the longitudinal center portion toward the outside on both sides in the longitudinal direction.
- the through portion 13e penetrating vertically is formed in a part of the wall portion 13d between the backing accommodation hole 13b and the blade rubber accommodation hole 13c. You may change into the structure in which 13e is not formed.
- the blade rubber receiving hole 13c is formed to be separated from the lower side of the backing receiving hole 13b so that the wall portion 13d is formed.
- the present invention is not limited to this, and the blade rubber is not limited thereto. You may change into the structure in which the accommodation hole was continuously formed, without separating below the backing accommodation hole. In this case, the wall portion 13d is not formed, and the upper portion 11a of the blade rubber 11 is brought into contact with the backing 12.
- penetration part 13e was formed in the longitudinal direction whole region in the center of the width direction of wall part 13d, it is not limited to this, for example, plurally form in the longitudinal direction intermittently etc. Alternatively, it may be formed on another part of the wall 13d.
- the shaft insertion hole 13a that supports the clip 16 so as to be rotatable around the axis extending along the width direction of the rubber holder is provided on the rubber holder 13 side as the support portion. It is good also as a structure which provided the axis
- one backing 12 is used, but a wiper blade having two backings of a type in which longitudinal transverse grooves are respectively formed on both side surfaces of the upper portion 11a of the blade rubber 11 and the backing is accommodated in each longitudinal transverse groove. You may apply to.
- the thick portion 41d has the inclined surface 41e that is inclined so that the width increases toward the upper side.
- the present invention is not limited to this, and may have a shape that does not have the inclined surface 41e. .
- it may be a thick portion having a constant thickness in the width direction.
- the width direction center line L1 of the cylinder part 41a was made into the shape offset by the vehicle back side with respect to the width direction center line L2 between claw parts 41c, it is not limited to this,
- the width direction center line L1 of the cylinder portion 41a may be changed to a shape that matches the width direction center line L2 between the claw portions 41c.
- the wiper case 14 has the fin member 42.
- the present invention is not limited to this, and the wiper case 14 may not have the fin member 42 (only the case main body 41).
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Abstract
Description
ここで、前記ラバーホルダ13がバッキング12及びブレードラバー11の上部11aを保持する構成について詳述する。
ラバーホルダ13の製造方法において、バッキング収容孔13bは射出成形によって成形される。この射出成形によって、長手方向におけるバッキング収容孔13bの中央部の両側に前記抜き勾配13f,13gが形成される。抜き勾配13f,13gは前述したように外側に向かってそれぞれ下り勾配となる。本実施形態の射出成形工程では、同時に前記ラバー側抜き勾配13h,13iも形成される。
図9に示すように、まずブレードラバー11は、上部11aに位置するヘッド部11cと、上部11aに位置するとともにヘッド部11cよりも幅が小さく下方に延びる幅狭部11dと、下部に位置するとともに払拭面を払拭するための前記払拭部11bと、払拭部11bを上部11aに対して傾倒可能に連結するネック部11eとを含んでいる。
次に、上記のように構成されたワイパ1の作用について説明する。
(1)長手方向におけるバッキング収容孔13bの中央部にはパーティングラインP1が設定される。そのため、長手方向一端にパーティングラインを設定した場合に比べて、その抜き勾配によるバッキング収容孔13bとバッキング12との隙間Sは、長手方向一端側と他端側とでその差を小さくできる。したがって、バッキング12を長手方向に均等に支持し易くなる。よって、連結されるワイパアーム2からの付勢力をバッキング12の長手方向に均等に伝達し易くなり、良好な払拭性を得ることができる。又、長手方向一端にパーティングラインを設定して一端から他端まで連続した一つの抜き勾配が形成されたものに比べて、バッキング収容孔13bの最大の高さ方向の幅Hを小さくすることができ、例えば、壁部13dの厚さを薄くすることができることから、ラバーホルダ13の高さ方向のサイズの小型化をも図ることが可能となる。
・上記実施形態では、各抜き勾配13f,13gは、側方から見て長手方向に沿った直線に対して傾斜した直線状に形成されるとしたが、これに限定されず、ラバーホルダ13の離型をスムーズにすることが可能な形状であれば、他の形状の抜き勾配としてもよい。
Claims (11)
- 長手方向に沿って延びるワイパブレードであって、
払拭面を払拭するためのブレードラバーと、
該ブレードラバーに剛性と弾性を付与するための板ばね状のバッキングと、
前記長手方向における前記ブレードラバーの中間部及び前記長手方向における前記バッキングの中間部を保持するラバーホルダと、を備え、
前記ラバーホルダは前記バッキングを収容及び保持するバッキング収容孔を有しており、
該バッキング収容孔は前記長手方向に沿って前記ラバーホルダを貫通しており、
前記長手方向における前記バッキング収容孔の中央部にはパーティングラインが設定されている、ワイパブレード。 - 請求項1に記載のワイパブレードにおいて、
前記ラバーホルダは、前記バッキング収容孔の前記中央部に対応する前記ラバーホルダの部位に設けられる支持部を有しており、
前記支持部は、前記ラバーホルダの幅方向に沿って延びる軸心回りで回動可能にワイパアーム連結部材を支持し、
前記ワイパアーム連結部材は、回動可能に前記ラバーホルダに連結され、
前記パーティングラインは、前記長手方向における前記支持部と対応した範囲内に設定され、
前記バッキング収容孔は、前記長手方向における前記バッキング収容孔の前記中央部の両側に位置する抜き勾配を有しており、
該抜き勾配は前記バッキング収容孔の中央部からそれぞれ外側に向かって延びているワイパブレード。 - 請求項2に記載のワイパブレードにおいて、
前記抜き勾配は、前記長手方向における前記支持部の軸心と対応した前記バッキング収容孔の位置から前記長手方向における両側に向かってそれぞれ延びているワイパブレード。 - 請求項1乃至3のいずれか1項に記載のワイパブレードにおいて、
前記ラバーホルダは前記ブレードラバーの上部を収容及び保持するブレードラバー収容孔を有しており、
該ブレードラバー収容孔は前記長手方向に沿って前記ラバーホルダを貫通しており、
前記ブレードラバー収容孔の幅方向中央は前記ラバーホルダの下部において開口しており、
前記長手方向における前記ブレードラバー収容孔の中央部にはラバー側パーティングラインが設定されているワイパブレード。 - 請求項1乃至3のいずれか1項に記載のワイパブレードにおいて、
前記ラバーホルダは前記ブレードラバーの上部を収容及び保持するブレードラバー収容孔を有しており、
前記ブレードラバー収容孔は前記バッキング収容孔から下方に離間した位置に設けられており、
前記ブレードラバー収容孔は前記長手方向に沿って前記ラバーホルダを貫通しており、
前記ブレードラバー収容孔の幅方向中央は前記ラバーホルダの下部において開口しており、
前記ラバーホルダは前記バッキング収容孔と前記ブレードラバー収容孔との間に位置する壁部を有しており、
前記壁部には、該壁部の一部を上下に貫通する貫通部が形成されているワイパブレード。 - 請求項5に記載のワイパブレードにおいて、
前記貫通部は、前記壁部の幅方向の中央に位置するとともに前記長手方向における前記壁部の全域に延びている、ワイパブレード。 - 請求項1に記載のワイパブレードであって、
前記ブレードラバーは、
上部に位置するヘッド部と、
前記上部に位置するとともに前記ヘッド部よりも幅が小さく下方に延びる幅狭部と、
下部に位置するとともに前記払拭面を払拭するための払拭部とを含み、
前記ワイパブレードは、前記ブレードラバーの上方に位置するワイパケースをさらに備え、
前記ワイパケースは、前記ブレードラバー及び前記バッキングを保持し、
前記ワイパケースは、
前記バッキングを収容及び保持する筒部と、
前記筒部から下方に延びて前記ヘッド部の側方を覆う一対の下延部と、
前記一対の下延部の下端からそれぞれ幅方向内側に延びる爪部であって、該爪部は前記ヘッド部の下面と対向して前記ヘッド部を把持する、前記爪部と、を有し、
前記下延部の各々は、該下延部の基端側に位置する肉厚部を有しており、
該肉厚部における幅方向の厚みは、前記バッキングと前記ヘッド部との間に位置する前記筒部の部位の厚みよりも厚いワイパブレード。 - 請求項7に記載のワイパブレードにおいて、
前記肉厚部は、上方に向かうほど前記肉厚部の幅が広がるように傾斜した傾斜面を有するワイパブレード。 - 請求項7又は8に記載のワイパブレードにおいて、
前記筒部の幅方向中心線は、前記爪部同士の間の幅方向中心線に対して車両後方側にオフセットされているワイパブレード。 - 請求項1に記載のワイパブレードであって、
前記ブレードラバーは、
上部に位置するヘッド部と、
前記上部に位置するとともに前記ヘッド部よりも幅が小さく下方に延びる幅狭部と、
下部に位置するとともに払拭面を払拭するための払拭部とを含み、
前記ワイパブレードは、前記ブレードラバーの上方に位置するワイパケースをさらに備え、
前記ワイパケースは、前記ブレードラバー及び前記バッキングを保持しており、
前記ワイパケースは、
前記バッキングを収容保持する筒部と、
前記筒部から下方に延びて前記ヘッド部の側方を覆う一対の下延部と、
前記一対の下延部の下端からそれぞれ幅方向内側に延びる爪部であって、該爪部は前記ヘッド部の下面と対向して前記ヘッド部を把持する、前記爪部と、を有し、
前記下延部の各々は、該下延部の外側に位置する肉厚部を有しており、
前記肉厚部は、前記下延部が該下延部の基端部を基点として前記爪部間が開くように撓むことを抑えるワイパブレード。 - 払拭面を払拭するためのブレードラバーと、該ブレードラバーに剛性と弾性を付与するための板ばね状のバッキングと、前記ブレードラバー及び前記バッキングを保持するラバーホルダと、を含み、長手方向に沿って延びるワイパブレードの製造方法であって、
射出成形によってバッキング収容孔を有する前記ラバーホルダを成形することであって、前記バッキング収容孔は前記長手方向における前記バッキングの中間部を収容及び保持し、前記バッキング収容孔は前記長手方向に沿って前記ラバーホルダを貫通していること、を備え、
前記バッキング収容孔を成形する際に、前記長手方向における前記バッキング収容孔の中央部にパーティングラインが設定され、
前記射出成形によって前記長手方向における前記バッキング収容孔の中央部の両側に抜き勾配が設けられ、該抜き勾配は前記バッキング収容孔の中央部からそれぞれ外側に向かって延びているワイパブレードの製造方法。
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US14/768,564 US9981636B2 (en) | 2013-09-11 | 2014-06-30 | Wiper blade and method for manufacturing wiper blade |
DE112014004175.0T DE112014004175T5 (de) | 2013-09-11 | 2014-06-30 | Wischerblatt und Verfahren zur Herstellung des Wischerblatts |
US15/492,903 US10710555B2 (en) | 2013-09-11 | 2017-04-20 | Wiper blade and method for manufacturing wiper blade |
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CN101857009B (zh) * | 2009-04-13 | 2012-01-04 | 黄世贤 | 非支架式雨刷之构造 |
JP2011218853A (ja) | 2010-04-05 | 2011-11-04 | Mitsuba Corp | ワイパブレード |
TWI388446B (zh) * | 2010-04-09 | 2013-03-11 | Shih Hsien Huang | Composition of non - stent - type wipers |
JP5580114B2 (ja) | 2010-05-31 | 2014-08-27 | アスモ株式会社 | ワイパブレード |
JP5400022B2 (ja) | 2010-12-27 | 2014-01-29 | 株式会社ミツバ | ワイパブレード |
US9751499B2 (en) | 2010-12-27 | 2017-09-05 | Mitsuba Corporation | Wiper blade |
JP5122666B2 (ja) | 2011-04-20 | 2013-01-16 | アスモ株式会社 | 車両用ワイパ装置 |
CN103101514B (zh) | 2011-09-15 | 2016-09-07 | 阿斯莫有限公司 | 车辆擦拭器 |
US9073518B2 (en) | 2011-09-15 | 2015-07-07 | Asmo Co., Ltd. | Vehicle wiper |
WO2015037309A1 (ja) * | 2013-09-11 | 2015-03-19 | アスモ 株式会社 | ワイパブレード及びワイパブレードの製造方法 |
-
2014
- 2014-06-30 WO PCT/JP2014/067395 patent/WO2015037309A1/ja active Application Filing
- 2014-06-30 DE DE112014004175.0T patent/DE112014004175T5/de not_active Ceased
- 2014-06-30 CN CN201480009366.3A patent/CN104995067B/zh active Active
- 2014-06-30 US US14/768,564 patent/US9981636B2/en active Active
-
2017
- 2017-04-20 US US15/492,903 patent/US10710555B2/en active Active
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JPH07137123A (ja) * | 1993-11-12 | 1995-05-30 | Ichikoh Ind Ltd | 車両用ワイパーにおける凍結防止カバーの製造方法及び凍結防止カバー |
JP2013500898A (ja) * | 2009-08-05 | 2013-01-10 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | フラットブレード構造のワイパブレード |
JP2013063674A (ja) * | 2011-09-15 | 2013-04-11 | Asmo Co Ltd | ワイパブレード及び車両用ワイパ |
JP2013086730A (ja) * | 2011-10-20 | 2013-05-13 | Asmo Co Ltd | ワイパブレード |
Also Published As
Publication number | Publication date |
---|---|
US9981636B2 (en) | 2018-05-29 |
US20160001745A1 (en) | 2016-01-07 |
CN104995067A (zh) | 2015-10-21 |
DE112014004175T5 (de) | 2016-05-25 |
US20170217408A1 (en) | 2017-08-03 |
CN104995067B (zh) | 2017-12-05 |
US10710555B2 (en) | 2020-07-14 |
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