DE102013206239A1 - Wischhebelanordnung und Wischblatt - Google Patents
Wischhebelanordnung und Wischblatt Download PDFInfo
- Publication number
- DE102013206239A1 DE102013206239A1 DE102013206239A DE102013206239A DE102013206239A1 DE 102013206239 A1 DE102013206239 A1 DE 102013206239A1 DE 102013206239 A DE102013206239 A DE 102013206239A DE 102013206239 A DE102013206239 A DE 102013206239A DE 102013206239 A1 DE102013206239 A1 DE 102013206239A1
- Authority
- DE
- Germany
- Prior art keywords
- lever
- hinge connection
- wiper
- portions
- connection parts
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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Classifications
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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
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3425—Constructional aspects of the arm
- B60S1/3436—Mounting heads
-
- 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
- B60S1/3801—Wiper blades characterised by a blade support harness consisting of several articulated elements
-
- 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
-
- 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
-
- 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
-
- 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
- B60S2001/3812—Means of supporting or holding the squeegee or blade rubber
- B60S2001/3813—Means of supporting or holding the squeegee or blade rubber chacterised by a support harness consisting of several articulated elements
- B60S2001/3815—Means of supporting or holding the squeegee or blade rubber chacterised by a support harness consisting of several articulated elements chacterised by the joint between elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Pivots And Pivotal Connections (AREA)
- Tents Or Canopies (AREA)
- Mechanical Control Devices (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
- BACKGROUND OF THE INVENTION
- 1. Field of the Invention
- The present invention relates to a wiper lever assembly and a wiper blade.
- 2. Description of the Related Art
- Among conventional wiper blades, a particular wiper blade is known which comprises a wiper lever assembly composed of an upper lever, having a lower lever coupled to the upper lever to pivotally connect the longitudinal center of the lower lever to a longitudinal end of the upper lever to form a tournament shape, and a backing and a blade rubber, both of which are gripped by the wiper lever assembly.
- This type of conventional wiper lever assembly includes a lower lever, and an upper lever having an outer top wall and a pair of outer lateral walls (having an inverted U-shaped section) to substantially cover the lower cover, wherein the pair of outer lateral walls are elastically deformed to enlarge the area between the pair of outer lateral walls and the lower lever is fitted between the pair of outer lateral walls during the assembling operation of the wiper lever assembly. In this wiper lever assembly, a plurality of shaft apertures are formed in the pair of outer lateral walls of the upper lever, and a pivot shaft is formed on the lower lever and protrudes outwardly in a lateral direction. When the lower lever is fitted between the pair of outer lateral walls, the pivot shaft is fitted in the shaft apertures to pivotally connect the lower lever to the upper lever.
- The wiper lever assembly prevents the lower lever from being separated when the upper lever is lifted upwardly, and transmits a downward pushing force supplied from the upper lever to the lower lever, only by provision of the pivot shaft and the shaft apertures. However, in this configuration is may be difficult to form a slanted surface on the pivot shaft due to the lack of a secure engagement between the pivot shaft and the shaft aperture.
- SUMMARY
- Accordingly, the present invention provides a wiper lever assembly and a wiper blade which are capable of preventing separation of a lower lever from an upper lever and transmitting a pushing force from an upper lever to a lower lever.
- The present invention provides a wiper lever assembly including: upper and lower levers, wherein the lower lever includes a lower engaging arc portion; a pair of pivotal connecting parts pivotally coupled to each of opposite longitudinal ends of the upper lever; a pair of mating pivotal connecting parts, wherein the lower engaging arc portion is disposed on the lower lever, and wherein the pair of pivotal connecting parts are fitted; and an upper pressing arc portion disposed on the upper lever over the pair of pivotal pressing parts, and wherein the upper pressing arc portion is in slidable contact with the lower engaging arc portion disposed on the lower lever; wherein a radius of curvature of a concave arc of one of the upper pressing arc portion and the lower engaging arc portion is set to be larger than that of a convex arc of the upper pressing arc portion and the lower engaging arc portion, and the pivotal connecting parts do not engage with any of upper and lower areas of the mating pivotal connecting parts while the upper pressing arc portion engages with the lower engaging arc portion.
- Each pivotal connecting part may have an inclined surface as an end surface to allow the pair of pivotal connecting parts to be fitted to the mating pivotal connecting parts.
- The lower lever may include a top wall and a pair of lateral walls downwardly extended from opposite lateral sides of the top wall, in which a region of the top wall to which the upper lever is coupled includes an elongated aperture which is longitudinally elongated, and the pair of lateral walls are perforated to form the mating pivotal connecting parts, wherein the upper lever includes an insert connecting member, which is downwardly extended from the longitudinal end of the upper lever and includes an approximate rectangular insert tube comprising a pair of opposite lateral walls which face the pair of lateral walls, respectively, and a pair of end walls connecting longitudinal ends of the pair of lateral walls to each other, and wherein the pivotal connecting parts protrude from the longitudinal center of the pair of lateral walls and are fitted to the mating pivotal connecting parts.
- The lower lever may include a top wall and a pair of lateral walls downwardly extended from opposite lateral sides of the top wall, in which the pair of lateral walls are perforated to form the mating pivotal connecting parts, and the pair of lateral walls include at lower portions thereof the lower engaging arc portions which are extended laterally and outwardly, and wherein the upper lever comprises an outer top wall and a pair of outer lateral walls to allow a longitudinal end portion of the upper lever to cover the top wall and the pair of lateral walls of the lower lever, in which the outer lateral walls include the pivotal connecting parts which protrude laterally and inwardly and are fitted to the mating pivotal connecting parts, and the pair of outer lateral walls include, at bottom ends thereof, the upper pressing arc portions which protrude downwardly.
- Furthermore, the present invention provides a wiper blade including: a wiper lever assembly disclosed in any of the above disclosures; and a backing and a blade rubber which are gripped by the wiper lever assembly.
- BRIEF DESCRIPTION OF THE DRAWINGS
- The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
1 is an exemplary view of an vehicle wiper according to an exemplary embodiment of the present invention; -
2 is an exemplary detailed view of the wiper blade according to an exemplary embodiment of the present invention; -
3A is an exemplary cross-sectional view of the wiper blade according to an exemplary embodiment of the present invention; -
3B is an exemplary cross-sectional view taken along a line B-B in3A according to an exemplary embodiment of the present invention; -
3C is an exemplary cross-sectional view taken along a line C-C in3A according to an exemplary embodiment of the present invention; -
3D is an exemplary cross-sectional view taken along a line D-D in3A according to an exemplary embodiment of the present invention; -
3E is an exemplary cross-sectional view taken along a line E-E in3A according to an exemplary embodiment of the present invention; -
4 is an exemplary detailed view of a wiper lever assembly according to an exemplary embodiment of the present invention; -
5A is an exemplary detailed view of the wiper lever assembly according to an exemplary embodiment of the present invention; -
5B is an exemplary detailed side view of the wiper lever assembly according to an exemplary embodiment of the present invention; -
5C is an exemplary detailed bottom view of the wiper lever assembly according to an exemplary embodiment of the present invention; -
6 is an exemplary detailed side view of the wiper lever assembly according to an exemplary embodiment of the present invention; -
7A is an exemplary view of a longitudinal end of a secondary lever according to an exemplary embodiment of the present invention; -
7B is an exemplary view of a longitudinal center portion of a yoke lever according to the an exemplary embodiment of the present invention; and -
7C is an exemplary cross-sectional view of a wiper lever assembly according to an exemplary embodiment of the present invention. - Bezugszeichenliste
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- 11
- wiper lever assembly
- 12
- backing
- 13
- blade rubber
- 22, 51
- secondary lever (upper lever)
- 22b
- insert connecting member
- 22c
- opposite lateral walls
- 22d
- end wall
- 22e
- insert tube
- 22f, 51c
- pivotal connecting pin (pivotal connecting part)
- 22g, 51e
- inclined surface
- 22h
- upper pressing arc portion (concave arc portion)
- 23, 24, 52
- yoke lever (lower lever)
- 23a, 24a, 52a
- top wall
- 23b, 24b, 52b
- lateral wall
- 23c, 24c
- grip portion
- 23d, 24d
- elongated aperture
- 23e, 24e, 52c
- pivotal connecting aperture (mating pivotal connecting part)
- 23g, 24g
- lower engaging arc portion (convex arc portion)
- 51a
- outer top wall
- 51b
- outer lateral wall
- 51d
- upper pressing arc portion (convex arc portion)
- 52d
- lower engaging arc portion (concave arc portion)
- DETAILED DESCRIPTION
- It is understood that the term ”vehicle” or ”vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, combustion, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e. g. fuels derived from resources other than petroleum).
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms ”a”, ”an” and ”the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms ”comprises” and/or ”comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term ”and/or” includes any and all combinations of one or more of the associated listed items.
- Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to
1 to6 . - As shown in
1 , an vehicle wiper1 according to an exemplary embodiment of the present invention, which is configured to wipe away rain drops that adhere to a wiping surface of a windshield of a vehicle, may comprise a wiper arm2 , and a wiper blade3 coupled to the wiper arm2 . The wiper arm2 may have a proximal end fixed to a pivot shaft (not shown) that is rotated back and forth within a predetermined angular range by the driving force of a wiper motor (not shown), and thus the wiper arm2 may swing back and forth by the back and forth rotation of the pivot shaft. Furthermore, the wiper arm2 may be biased at a distal end toward the windshield (e. g., wiping surface) by a biasing mechanism (not shown). - A wiper blade
3 may be coupled to the distal end of the wiper arm2 . The wiper blade3 may comprise a wiper lever assembly11 , and a plurality of backings12 (see3D ) and a blade rubber13 , both of which are gripped by the wiper lever assembly11 ). In addition, the wiper lever assembly11 may comprise an upper lever, having a lower lever coupled to the upper lever to pivotally connect a longitudinal end of the upper lever to a longitudinal center of the lower lever. More specifically, the wiper lever assembly11 according to the embodiment of the present invention may include a lever member including a center cover lever21 , a pair of secondary levers22 , four yoke levers23 ,24 , and a pair of cases25 , as shown in2 . - The center cover lever
21 , which is made of a resin material, may be configured to have an approximate inverted U-shaped transverse section. The center cover lever21 is disposed on substantially the entire area of a front surface (except an intermediate area) with a fin portion21a that converts wind pressure applied to a traveling vehicle into a pushing force against the wiping surface (see2 and3E ). In addition, the center cover lever21 includes a clip connection opening21b formed at the center portion of its length, and a clip26 disposed under the opening21b and pivotally coupled to a transverse pin and to which the distal end of the wiper arm2 is removably mounted as shown in1 . Furthermore, the center cover lever21 may include a plurality of center connectors21c formed at the opposite ends thereof (see3 and3E ). As shown in3 and3E , each center connecting member21c may comprise a plate-shaped portion21d which protrudes downwardly from an inner surface of the center cover lever21 , and a center shaft portion21e which protrudes in a width direction from the longitudinal center of a lower surface of the plate-shaped portion21d . Each secondary lever22 may be pivotally connected at the longitudinal center thereof to the opposite ends (e. g., the center connecting members21c ) of the center cover lever21 . - The secondary lever
22 , which is made of a resin material, may be configured to have an approximate inverted U-shaped transverse section (see3C ). As shown in2 and3A to3E , the longitudinal center of the secondary lever22 may include a connecting aperture22a , in which the center connecting member21c may be fitted, thus enabling the secondary lever22 to be pivotally connected to the center cover lever21 and to be rotated about the center shaft portion21e . - The secondary lever
22 may be disposed at opposite ends with the yoke levers23 ,24 to pivotally connect each of the opposite ends of the secondary lever22 to the longitudinal center of the corresponding yoke lever23 or24 . - More specifically, as shown in
2 to5 , each of the yoke levers23 ,24 , made of a metallic material, may be configured to have approximate substantially inverted U-shaped transverse section, and may include a top wall23a or24a and a pair of lateral walls23b or24b which protrudes downwardly from both lateral sides of the top wall23a or24a . Each of the yoke levers23 ,24 may further include a plurality of grip portions23c ,24c that grip a backing12 and the blade rubber13 . Each of the longitudinal centers of the top walls23a ,24a may include an elongated aperture23d or24d which is extended in a longitudinal direction of the yoke lever23 or24 as viewed from above. Each of the elongated apertures23d ,24d may have the same width as that of the top walls23a ,24a , to divide each of the top walls23a ,24a in a longitudinal direction. Each of longitudinal centers of the lateral walls23b ,24b may include a pivotal connecting aperture23e or24e . As shown in5B and6 , each of the pivotal connecting apertures23e ,24e may include an upper and a lower arc section and a pair of parallel linear sections connected between the opposite ends of the upper arc section and the opposite ends of the lower arc section as viewed in an axis direction of the connecting aperture. Each of the top walls23a ,24a may include a support aperture23f or24f at a location inside the longitudinal center of the top wall23a or24a (an area covered with the secondary lever22 ), in which the support aperture23f or24f is extended longitudinally as viewed from above. - As shown in
4 , at the opposite ends of the secondary lever22 , the top wall among the inverted U-shaped walls is extended longitudinally, and the extended top wall portion may include an insert connecting member22b which is extended downwardly and inserted and fitted to the elongated apertures23d ,24d from above. - As shown in
4 and5C , the insert connecting member22b may comprise a pair of opposite lateral walls22c which are extended parallel to each other to face inner surfaces of the pair of lateral walls23b or24b , and a pair of end walls22d connecting ends of the opposite lateral walls22c , to allow the insert connecting member22b to include a rectangular insert tube22e which is extended longitudinally as viewed from below. In addition, as shown in4 and5 , the insert connecting member22b may include a plurality of pivotal connecting pins22f which laterally protrude from the longitudinal center of the pair of opposite lateral walls22c and may be fitted to the pivotal connecting apertures23e or24e to operate as a pivotal center. Each of the pivotal connecting pins22f may include an upper and a lower arc section and a pair of parallel linear sections connected between the opposite ends of the upper arc section and the opposite ends of the lower arc section, as viewed in a transverse section of the pivotal connecting pin22f . The pivotal connecting pin22f may include a lower inclined surface22g on a lower area of an end face thereof, wherein the lower inclined surface22g is inclined downwardly and inwardly. The pivotal connecting pin22f may further include an upper flat surface formed on the end face above the lower inclined surface22g , and a curved surface may be connected between the upper vertical flat surface and the lower inclined surface22g . Furthermore, inserting the pivotal connecting pin22f into the pivotal connecting aperture23e ,24e , allows a pivot action of the yoke lever23 ,24 with respect to the longitudinal end of the secondary lever22 while the downward separation of the yoke lever23 ,24 due to upward lift of the secondary lever22 may be inhibited. Specifically, when the secondary lever22 (or the case25 ) is lifted while the blade rubber13 is adhered to a wiping surface due to freezing, an upper outer surface of the pivotal connecting pin22f may engage with an upper inner surface of the pivotal connecting aperture23e ,24e , to inhibit the downward separation of the yoke lever23 ,24 , thus causing the yoke lever23 ,24 to lift, as shown in6 . - As shown in
5B , the secondary lever22 (e. g., the extended top wall) may include an upper pressing arc portion22h disposed above the pivotal connecting pins22f , wherein the upper pressing arc portion22h is shaped to be concave upwardly. Meanwhile, the yoke levers23 ,24 may include lower engaging arc portions23g ,24g above the pivotal connecting apertures23e ,24e , wherein the lower engaging arc portions23g ,24g are shaped to be upwardly convex. The upper pressing arc portion22h may be disposed on the lower engaging arc portions23g ,24g to allow the upper pressing arc portion22h to slidable contact the lower engaging arc portions23g ,24g . As a result, the pivot movement of the yoke levers23 ,24 with respect to the longitudinal end of the secondary lever22 may be allowed, and the downward pushing force from the secondary lever22 may be transmitted to the yoke levers23 ,24 . - The radius of curvature of the upper pressing arc portion
22h (e. g., the radius of curvature of the arc defined by the upper pressing arc portion22h ) may be larger than that of the lower engaging arc portions23g ,24g (e. g., the radius of curvature of the arc defined by the lower engaging arc portions23g ,24g ). As shown in5B , when the upper pressing arc portion22h engaged with the lower engaging arc portions23g ,24g , the pivotal connecting pins22f do not engage with any of upper and lower inner surfaces of the pivotal connecting apertures23e ,24e . As shown in6 , when the secondary lever22 (or the case25 ) is lifted, the pivotal connecting pins22f may engage with the upper inner surface of the pivotal connecting apertures23e ,24e while the upper pressing arc portion22h may be spaced apart from the lower engaging arc portion23g ,24g . - As shown in
5C , the longitudinal center portions of the pair of opposite lateral walls22c may have a thickness less than that of longitudinal ends of the pair of opposite lateral walls22c . According to this embodiment, the variance in thickness of the pair of opposite lateral walls may allow the longitudinal center portions of the pair of opposite lateral walls22c to bend inwardly to an amount of displacement exceeding the protruding length of the pivotal connecting pins22f . In other words, the thickness of the longitudinal center portion of each of the pair of opposite lateral walls22c allows a distance between the opposite longitudinal center portions to be substantially equal to or more than twice the protruding length of each of the pivotal connecting pins22f . According to the above configuration, the secondary lever22 and the yoke lever23 ,24 may be pivotably coupled to each other by fitting the insert connecting member22b into the elongated aperture23d ,24d from above. More specifically, as the insert connecting member22b and the lower inclined surface22g are inserted into the elongated aperture23d ,24d from above, the longitudinal center portions of the pair of opposite lateral walls22c may be bent toward each other, and the pivotal connecting pins22f may be fitted into the pivotal connecting apertures23e ,24e (e. g., the bent states of the longitudinal center portions are relaxed), thereby completing the coupling operation of the yoke levers23 ,24 to the secondary levers22 . - As shown in
5B , the secondary lever22 (e. g., the extended top wall) may include a pivot limit protrusion22i to limit the pivoting movement of the yoke lever23 ,24 with respect to the secondary lever22 within a predetermined range. The pivot limit protrusion22i may be configured to limit an outward pivoting movement of the yoke lever23 ,24 with respect to the secondary lever22 (e. g., a clockwise pivoting movement in5B ) to a position in which the backing12 and the blade rubber13 gripped by the grip portions23c ,24c may be disposed parallel to the secondary lever22 (e. g., a position in which the pivot limit protrusion22i engages with the yoke lever23 ,24 ). - As shown in
3C and5C , the secondary lever22 may include a plurality of support walls22j which are fitted in the support apertures23f ,24f of the yoke levers23 ,24 and may engage with the yoke levers23 ,24 in a width direction to reduce lateral movement of the yoke levers23 ,24 with respect to the secondary lever22 . The dimensions of the support wall22j may allow the yoke levers23 ,24 to pivot with respect to the secondary lever22 while the support wall22j is fitted in the support apertures23f ,24f . - As shown in
1 ,3A ,3C and3D , the secondary lever22 may include the case25 as a part of the secondary lever22 which protrudes from the center cover lever21 . The case25 , which may be made of a resin material, may have a substantially inverted U-shaped transverse section. The case25 may be disposed on substantially the entire area of a front surface with a fin portion25a to convert wind pressure applied to a traveling vehicle into a pushing force against the wiping surface (see3B to3D ). The fin portion25a may be connected to the fin portion21a of the center cover lever21 . - As shown in
3A and3B , the case25 may include with a plurality of flex resistant plates25b , which protrude from an inner surface of the case25 and are fitted to the insert connecting members22b (e. g., the insert tubes22e ). As shown in3A and3D , the case may further include a plurality of fitting plates25c , which protrude from the inner surface of the case25 and are fitted to fitting apertures22k formed at the top wall of the secondary lever22 . Accordingly, the case25 may be coupled to the secondary lever22 by the flex resistant plates25b fitted to the insert connecting members22b (e. g., the insert tubes22e ) and the fitting plates25c fitted to the fitting apertures22k , as shown in3A ,3B and3D . In addition, the case25 may be coupled to the secondary lever22 by the flex resistant plates25b fitted to the insert connecting members22b (e. g., the insert tubes22e ), flex of the pair of opposite lateral walls22c , that is, the displacement of the pivotal connecting pins22f is suppressed, as shown in3B . - Operations of the vehicle wiper
1 according to the embodiment of the present invention will now be explained. - In the vehicle wiper
1 , the distal end of the wiper arm2 may be biased against a windshield (e. g., wiping surface) by a biasing mechanism (not shown), and the pushing force may be transmitted to the blade rubber13 via the clip26 , the center cover lever21 , the secondary lever22 and the yoke levers23 ,24 . Thus, the blade rubber13 may contact a windshield over substantially the entire length. While the vehicle is in motion, the wind pressure applied to the fin portions21a ,25a may be converted into a pushing force against the windshield (e. g., wiping surface), thus causing the blade rubber13 to come into contact with the windshield. Consequently, when the wiper arm2 pivotally swings around the pivot shaft, the desirable wiping action is obtained. - Hereinafter, the effects of the embodiment of the present invention will be described.
- (1) Since the pair of pivotal connecting pins
22f are fitted in the pivotal connecting apertures23e ,24e , a pivot action of the yoke lever23 ,24 with respect to the longitudinal end of the secondary lever22 is allowed while the downward separation of the yoke lever23 ,24 due to upward lift of the secondary lever22 is inhibited. Furthermore, since the upper pressing arc portion22h slidably contacts the lower engaging arc portions23g ,24g at a position different from the position of the pivotal connecting pin22f and the pivotal connecting aperture23e ,24e , the pivot movement of the yoke lever23 with respect to the longitudinal end of the secondary lever22 is allowed, and the downward pushing force from the secondary lever22 may be transmitted to the yoke levers23 ,24 . Furthermore, since a part configured to prevent the yoke lever23 ,24 from being separated downwardly when the secondary lever22 is lifted upwardly and a part configured to transmit a downward pushing force supplied from the secondary lever22 to the yoke lever23 ,24 are disposed at positions different from each other, the optimal configurations for respective parts may be achieved. For example, rigidity or durability of the respective parts may be optimized. In addition, since the pair of pivotal connecting pins22f and the pair of pivotal connecting apertures23e ,24e do not transmit the pushing force, it may be possible to reduce, for example, an area of a lower surface of the pivotal connecting pin22f (e. g., an area of a surface perpendicular to the vertical line). Accordingly, the respective end faces of the pivotal connecting pins22f may have lower inclined surfaces22g which are inclined downwardly and inwardly to allow fitting of the pair of pivotal connecting pins22f into the pivotal connecting apertures23e ,24e , as in the above embodiment. As a result, for example, assembly ease of the wiper lever assembly may be improved. - In addition, since the radius of curvature of the upper pressing arc portion
22h , which is concave upwardly, may be larger than that of the lower engaging arc portions23g ,24g , which is convex upwardly, a frictional resistance occurring in a slidable contact therebetween may be reduced, thus allowing a pivot action of the yoke lever23 ,24 with respect to the longitudinal end of the secondary lever22 ,24 . Furthermore, since the pivotal connecting pin22f does not come into contact with the upper and lower areas of the pivotal connecting apertures23e ,24e when the upper pressing arc portion22h engages with the lower engaging arc portions23g ,24g , assembly defects may be prevented. Furthermore, since no frictional resistance occurs between the pivotal connecting pin and the pivotal connecting aperture during the slidable contact, a pivot action of the yoke lever23 ,24 with respect to the secondary lever22 may be facilitated. - (2) To fit the pair of pivotal connecting pins
22f into the pivotal connecting apertures23e ,24e , the end face of the pivotal connecting pin22f include the inclined surface22g , which is inclined inwardly and upwardly or downwardly (e. g., inwardly and downwardly in the embodiment). Consequently, a fitting operation of the pair of pivotal connecting pins22f into the pivotal connecting apertures23e ,24e , and thus an assembling operation of the yoke levers23 ,24 to the secondary levers22 may be facilitated. - (3) The insert connecting member
22b of the secondary lever22 may comprise a pair of opposite lateral walls22c which face the inner surfaces of the pair of lateral walls23b ,24b of the yoke levers23 ,24 , and a pair of end walls22d connecting ends of the opposite lateral walls22c , to include a rectangular insert tube22e in the insert connecting member22b , wherein the rectangular tube22e is extended longitudinally as viewed from below. Consequently, the pair of opposite lateral walls22c of the insert connecting member22b may bend at the longitudinal center portions thereof due to the extended structure. As a result, as the longitudinal center portions of the pair of opposite lateral walls22 bend inwardly, the pivotal connecting pins22f protruding from the center portions may be displaced inwardly, to allow the insert connecting member22b to be fitted to the elongated aperture23d ,24d of the yoke lever23 ,24 . Subsequently, by inserting the pivotal connecting pins22f into the pivotal connecting apertures23e ,24e of the yoke lever23 ,24 (e. g., by releasing the bent conditions of the pair of opposite lateral walls22c ), the yoke lever23 ,24 may be coupled to the secondary lever22 . Furthermore, since the pair of opposite lateral walls22c of the insert connecting member22b may have a substantially large length (e. g., even without an increase in their height) a substantial bending deformation of the longitudinal center portions may be assured, thus, the height of insert connecting member22b does not need to increase to obtain an increased bending deformation. In other words, where the secondary lever has a top wall and a pair of lateral walls to define a substantially U-shaped section to cover the yoke lever, a height of the secondary lever may increase to cause a larger elastic deformation of the pair of lateral walls of the secondary lever and thus a larger expansion of the opening defined between the pair of lateral walls. According to the embodiment of the present invention, the increase in a height of the secondary lever may be avoided, which may provide a suppression of a height increase of a wiper blade3 and an improved appearance. - In addition, since a region of the pair of opposite lateral walls
22c of the insert connecting member22b (e. g., the insert tube22e ) which faces the lateral walls23b ,24b of the pair of yoke lever23 ,24 may be increased longitudinally, a movement in a wiping direction (e. g., a movement in a width direction perpendicular to the longitudinal direction) of the yoke lever23 ,24 with respect to the secondary lever22 may be reduced. Furthermore, even though a load in a wiping direction is applied between the secondary lever22 and the yoke lever23 ,24 , the load may not be locally applied to the longitudinal center portion (e. g., the pivotal connecting pin22f ) of the pair of opposite lateral walls22c . Furthermore, a separation of the yoke lever23 ,24 from the secondary lever22 may be suppressed due to the increased bending deformation of the longitudinal center portion. - (4) Since the longitudinal center portions of the pair of opposite lateral walls
22c have a thickness less than that of the longitudinal end portions of the pair of opposite lateral walls22c , the longitudinal center portions bend by a decreased force, and an amount of bending deformation may increase, thus increasing an amount of inward displacement of the pivotal connecting pins22f . As a result, an operation of coupling the yoke lever to the secondary lever may be facilitated. Moreover, since the longitudinal end portions of the pair of opposite lateral walls22c have a thickness larger than that of the longitudinal center portions of the lateral walls22c , an increased overall rigidity of the insert connecting member22b (e. g., the insert tube22e ) may be achieved in addition to the above-mentioned effects. - (5) Since the flex resistant plate
25b is fitted to the insert tube22e of the insert connecting member22b while the insert connecting member22b is fitted to the elongated aperture, to suppress flex of the pair of opposite lateral walls22c , separation of the pivotal connecting pins22f from the pivotal connecting apertures23e due to the flex of the pair of opposite lateral walls22c may be prevented. Consequently, accidents in which the separation of the yoke lever23 from the secondary lever22 may be reduced. - (6) The flex resistant plate
25b is used as the flex resistant member which is fitted to the insert tube22e to suppress flex of the pair of the pair of opposite lateral walls22c , wherein the flex resistant plate25b is disposed in the case25 covering the secondary lever22 . Accordingly, as compared to when the flex resistant member is prepared separately, the number of required components and the number of fabrication processes may be reduced. - (7) The secondary lever
22 includes the support wall22j , which is disposed at a position more distant than the longitudinal ends of the opposite lateral walls22c as viewed from the pivotal connecting pins22f and faces the lateral walls of the yoke lever23 ,24 (e. g., the inner surfaces of the support aperture23f ,24f ) to reduce lateral movement of the yoke lever23 ,24 with respect to the secondary lever22 . Consequently, the lateral movement (e. g., the movement in a wiping direction) of the yoke lever23 ,24 with respect to the secondary lever22 may be further reduced. In addition, even though a lateral load (e. g., a load in a wiping direction) may be applied between the secondary lever22 and the yoke lever23 ,24 , the load may not be applied to the insert connecting member22b including therein the opposite lateral walls22c equipped with the pivotal connecting pins22f . As a result, accidents in which the yoke lever23 ,24 is separated from the secondary lever22 may be reduced. - (8) Since the secondary lever
22 includes the pivot limit protrusion22i which engages with the yoke lever23 ,24 to limit a pivot action of the yoke lever23 ,24 with respect to the secondary lever22 within a predetermined range, the yoke lever23 ,24 may not be pivoted beyond a particular location with respect to the secondary lever22 . Consequently, for example, when a rock back is released (e. g., when the blade rubber13 lifted from the wiping surface is restored to the normal position on the wiping surface), increase in impact on the wiping surface due to a swinging action of the yoke lever23 ,24 may be suppressed. - (9) Since the secondary lever
22 may be made of a resin material, the insert connecting member22b may be shaped while assuring the desirable flexibility of the opposite lateral walls22c and reducing the weight of products. In addition, since the yoke lever23 ,24 may be made of a metallic material and includes grip portions23c 24c for gripping the backing12 and the blade rubber13 , the overall size of the products may be decreased (e. g., the thickness of the grip portions23c ,24c may be reduced) and the backing12 and the blade rubber13 may be securely gripped. - The embodiment of the present invention may be modified as follows.
- The wiper blade may include a longitudinal end of a secondary lever
51 configured to cover the center portion of a yoke lever52 , for example, as shown in7 . More specifically, as shown in7B , the yoke lever52 may operate as a lower lever of the wiper blade (e. g., wiper lever assembly) and may include a top wall52a and a pair of lateral walls52b extended downwardly from lateral sides of the top wall52a . Pivotal connecting apertures52c may be formed at the lateral walls52b of the yoke lever52 , and under the pivotal connecting apertures52c the yoke lever52 may include lower engaging arc portions52d which may be laterally and outwardly extended and may be concave downwardly. - As shown in
7A , the secondary lever51 may operate as an upper lever and may include an outer top wall51a and a pair of outer lateral walls51b to cover the top wall52a and the pair of lateral walls5b of the yoke lever52 at a longitudinal end portion thereof. The lateral walls of the secondary lever Si may include pivotal connecting pins51c that protrude inwardly and may be fitted to the pivotal connecting apertures52c . The lateral walls51b may include upper pressing arc portions51d under the pivotal connection pins51c , wherein the lateral walls51b may be convex downwardly. of the end faces of each pivotal connecting pin51c may include an inclined surface51e which is inclined inwardly and upwardly or downwardly (e. g., inwardly and downwardly in this modification) to allow the pair of pivotal connecting pins51c into the to be fitted to pivotal connecting apertures52c . - As shown in
7C , by the fitting of the pivotal connecting pins51c into the pivotal connecting apertures52c , a pivot action of the yoke lever52 with respect to the secondary lever51 may be allowed while a downward separation of the yoke lever52 due to lift of the secondary lever51 may be inhibited. Furthermore, since the upper pressing arc portion51d of the secondary lever51 may be disposed on the lower engaging arc portion52d of the yoke lever52 for slidable contact therewith, a pivot action of the yoke lever52 with respect to the longitudinal end of the secondary lever51 may be allowed, and a downward load from the secondary lever51 may be transmitted to the yoke lever52 . - The radius of curvature of the lower engaging arc portion
52d may be larger than that of the upper pressing arc portions51d . As shown in7C , when the upper pressing arc portion51d engages with the lower engaging arc portions52d , the pivotal connecting pins51c may not engage with any of upper and lower inner surfaces of the pivotal connecting apertures52c . - This embodiment which is configured as described above may achieve the same effects as the effects (1), (2) described above. Furthermore, by this configuration, an infiltration of foreign substances such as dust into a clearance between the pivotal connecting pins
51c and the pivotal connecting apertures52c may be prevented. - Although that the above description discloses that each of the pivotal connecting pins
22f ,51c may include an inclined surface22g ,51e , on each end, the pivotal connecting pin may be modified into a pivotal connecting pin having no the inclined surface22g ,51e , without limitation. Additionally, the pair of opposite lateral walls22c may have a uniform thickness. The flex resistant plate25b may not be fitted to the insert tube22e of the insert connecting member22b to suppress the flex of the pair of opposite lateral walls22c . Additionally, the flex resistant plate25b , may be manufactured separately from the case25 . - Moreover, the pivot limit protrusion
22i disposed on the yoke lever23 ,24 instead of the secondary lever22 or alternatively, it may be eliminated. The secondary lever22 and the yoke lever23 ,24 may be made of the same material, for example, the secondary lever22 and the yoke lever23 ,24 may be made of various types of resin materials. Additionally, the center cover lever21 and the case25 may not include the fin portions21a ,25a . Alternatively, the case25 may be eliminating, thereby exposing a part of the yoke lever. Furthermore, the present invention may be applied between the uppermost lever (e. g., the center cover lever21 ) and the underlying lower lever (e. g., the secondary lever22 ), without limitation.
Claims (7)
- Wischhebelanordnung, aufweisend: einen oberen und einen unteren Hebel, wobei der untere Hebel einen unteren Eingriffbogenabschnitt aufweist; eine Vielzahl von Gelenkverbindungsteilen, welche schwenkbar zu jedem der gegenüberliegenden Längsenden des oberen Hebels gekoppelt sind; eine Vielzahl von passenden Gelenkverbindungsteilen, welche auf dem unteren Hebel angeordnet sind, worin die Vielzahl von Gelenkverbindungsteilen eingepasst sind; und einen oberen Pressbogenabschnitt, welcher auf dem oberen Hebel über der Vielzahl von Gelenkpressteilen angeordnet ist, wobei der obere Pressbogenabschnitt in gleitbaren Kontakt mit dem unteren Eingriffbogenabschnitt ist; wobei ein Radius der Krümmung eines konkaven Bogens des oberen Pressbogenabschnitts und des unteren Eingriffbogenabschnittes größer als der Radius der Krümmung eines konvexen Bogens des oberen Pressbogenabschnitts und des unteren Eingriffbogenabschnittes ist, und die Gelenkverbindungsteile nicht in Eingriff mit den oberen und unteren Bereichen der passenden Gelenkverbindungsteile sind, während der obere Pressbogenabschnitt in Eingriff mit dem unteren Eingriffbogenabschnitt ist.
- Wischhebelanordnung nach Anspruch 1, wobei jedes Gelenkverbindungsteil auf seiner Endoberfläche eine geschrägte Oberfläche aufweist, um der Vielzahl von Gelenkverbindungsteilen zu ermöglichen, um in den passenden Gelenkverbindungsteilen eingepasst zu werden.
- Wischhebelanordnung nach Anspruch 1, wobei der untere Hebel beinhaltet: Eine obere Wand; und eine Vielzahl von Seitenwänden, welche sich abwärts von gegenüberliegenden lateralen Seiten der oberen Wand erstrecken, wobei ein Bereich der oberen Wand, zu welchen der obere Hebel gekoppelt ist, der Länge nach verlängerte Öffnungen aufweist, und die Vielzahl von Seitenwänden durchdrungen sind, um die passenden Gelenkverbindungsteile auszubilden.
- Wischhebelanordnung nach Anspruch 1, wobei der obere Hebel beinhaltet: Ein Einsetzverbindungsbauteil, welches sich abwärts von dem Längsende des oberen Hebels erstreckt, wobei das Einsetzverbindungsbauteil eine im Wesentlichen rechteckige Einsetzröhre aufweist, welche eine Vielzahl von gegenüberliegenden Seitenwänden aufweist, welche jeweils zu der Vielzahl von Seitenwänden zeigen, und eine Vielzahl von Endwänden, welche die Längsenden der Vielzahl von Seitenwänden miteinander verbinden, und wobei die Gelenkverbindungsteile von dem Längszentrum der Vielzahl von Seitenwänden hervorragen und in die passenden Gelenkverbindungsteile eingepasst sind.
- Wischhebelanordnung nach Anspruch 1, wobei der untere Hebel beinhaltet: Eine obere Wand; und eine Vielzahl von Seitenwänden, welche sich abwärts von gegenüberliegenden lateralen Seiten der oberen Wand erstrecken, wobei die Vielzahl von Seitenwänden durchdrungen ist, um die passenden Gelenkverbindungsteile auszubilden, und an unteren Abschnitten davon angeordnet sind mit den unteren Eingriffbogenabschnitten, welche sich seitwärts und nach außen erstrecken.
- Wischhebelanordnung nach Anspruch 1, wobei der obere Hebel beinhaltet: Eine äußere obere Wand; und eine Vielzahl von äußeren Seitenwänden, um einem Längsendenabschnitt des oberen Hebels zu ermöglichen, um die obere Wand und die Vielzahl von Seitenwänden des unteren Hebels abzudecken, wobei die äußeren Seitenwände die Gelenkverbindungsteile beinhalten, welche seitlich und nach innen hervorragen und in den passenden Gelenkverbindungsteilen eingepasst sind, und an Bodenenden davon angeordnet sind mit den oberen Pressbogenabschnitten, welche abwärts hervorragen.
- Wischblatt, aufweisend: Eine Wischhebelanordnung, welche beinhaltet: Einen oberen und einen unteren Hebel, wobei der untere Hebel einen unteren Eingriffbogenabschnitt aufweist; eine Vielzahl von Gelenkverbindungsteilen, welche schwenkbar zu jedem der gegenüberliegenden Längsenden des oberen Hebels gekoppelt sind; eine Vielzahl von passenden Gelenkverbindungsteilen, welche auf dem unteren Hebel angeordnet sind, wobei die Vielzahl von Gelenkverbindungsteilen gepasst sind; und einen oberen Pressbogenabschnitt, welcher auf dem oberen Hebel über der Vielzahl von Gelenkpressteilen angeordnet ist, wobei der obere Pressbogenabschnitt in gleitbaren Kontakt mit dem unteren Eingriffbogenabschnitt ist; wobei ein Radius der Krümmung eines konkaven Bogens des oberen Pressbogenabschnittes und des unteren Eingriffbogenabschnittes größer ist als der Radius der Krümmung eines konvexen Bogens des oberen Pressbogenabschnittes und des unteren Eingriffbogenabschnittes, und die Gelenkverbindungsteile nicht im Eingriff mit den oberen und unteren Bereichen der passenden Gelenkverbindungsteilen sind, während der obere Pressbogenabschnitt im Eingriff ist mit dem unteren Pressbogenabschnitt; und eine Rückseite und einen Wischgummi, welche durch die Wischhebelanordnung gegriffen sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2012-098830 | 2012-04-24 | ||
JP2012098830A JP5886118B2 (ja) | 2012-04-24 | 2012-04-24 | ワイパレバーアッセンブリ、ワイパブレード及びワイパレバーアッセンブリの製造方法 |
Publications (2)
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DE102013206239A1 true DE102013206239A1 (de) | 2013-10-24 |
DE102013206239B4 DE102013206239B4 (de) | 2020-10-29 |
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DE102013206239.7A Active DE102013206239B4 (de) | 2012-04-24 | 2013-04-09 | Wischhebelanordnung und Wischblatt |
Country Status (5)
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US (1) | US9187064B2 (de) |
JP (1) | JP5886118B2 (de) |
KR (1) | KR101439002B1 (de) |
CN (1) | CN103640551B (de) |
DE (1) | DE102013206239B4 (de) |
Families Citing this family (5)
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JP5781960B2 (ja) | 2012-02-24 | 2015-09-24 | アスモ株式会社 | ワイパレバーアッセンブリ及びワイパブレード |
KR101511612B1 (ko) * | 2014-03-12 | 2015-04-13 | 케이씨더블류 주식회사 | 와이퍼 블레이드 |
US10196045B2 (en) | 2014-06-16 | 2019-02-05 | Cap Corporation | Wiper blade assembly |
KR101790510B1 (ko) * | 2014-06-16 | 2017-10-27 | 주식회사 캐프 | 와이퍼 블레이드 조립체 |
KR101609230B1 (ko) * | 2014-12-30 | 2016-04-05 | 케이씨더블류 주식회사 | 와이퍼 블레이드 |
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-
2012
- 2012-04-24 JP JP2012098830A patent/JP5886118B2/ja active Active
-
2013
- 2013-02-04 KR KR1020130012385A patent/KR101439002B1/ko active IP Right Grant
- 2013-03-14 US US13/829,006 patent/US9187064B2/en active Active
- 2013-04-09 DE DE102013206239.7A patent/DE102013206239B4/de active Active
- 2013-04-23 CN CN201310143182.3A patent/CN103640551B/zh active Active
Also Published As
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KR101439002B1 (ko) | 2014-09-15 |
US9187064B2 (en) | 2015-11-17 |
DE102013206239B4 (de) | 2020-10-29 |
KR20130119857A (ko) | 2013-11-01 |
US20130276255A1 (en) | 2013-10-24 |
CN103640551B (zh) | 2017-03-01 |
JP5886118B2 (ja) | 2016-03-16 |
JP2013226863A (ja) | 2013-11-07 |
CN103640551A (zh) | 2014-03-19 |
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