JP5940927B2 - Wiper blade - Google Patents

Description

  The present invention relates to a wiper blade.

  Conventionally, wiper blades include a blade rubber, a leaf spring-like backing for imparting rigidity and elasticity to the blade rubber, and a connecting lever that is assembled to the backing and connected to the wiper arm. Yes (see, for example, Patent Document 1). In this wiper blade, a locking groove is formed in a part of the side portion of the backing, and an elastic locking portion that fits into the locking groove and restricts movement in the longitudinal direction is integrated with the connecting lever. Molded. In this wiper blade, when the backing (and blade rubber) is moved relative to the connecting lever in the longitudinal direction and assembled, the elastic locking portion is not backed until the elastic locking portion is fitted in the locking groove. While being bent by the side portion where the locking groove is not formed, the side portion slides while being pressed against the side portion. When the elastic locking portion reaches the locking groove by the relative movement in the longitudinal direction, the elastic locking portion is fitted into the locking groove while the bending is eliminated, and the relative movement in the longitudinal direction is restricted. become.

Special Table 2002-533261

  However, in the above-described wiper blade, the elastic locking part is slid while being pressed against the backing by the elastic force while being assembled. There is a concern that the elastic locking portion may be caught by a groove or a slight unevenness that is not intended. Therefore, for example, there is a possibility that the assembling property is bad or the elastic locking portion is broken (broken or worn) at the time of assembling.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wiper blade that can be easily assembled and can prevent breakage (breaking or wear) during assembly. .

In the first aspect of the present invention, a long blade rubber having a wiping portion for wiping the wiping surface, and a rigidity and elasticity are provided along the longitudinal direction of the blade rubber. A leaf spring-like backing, and a lever holding portion that surrounds the periphery of the blade rubber and the base of the blade rubber and the backing in the longitudinal center portion of the backing and restricts the movement in the direction orthogonal to the longitudinal direction. has, directly wiper arm or a connecting lever which is indirectly connected, longitudinal movement of the engagement to the backing and the coupling lever and the longitudinal direction so as to restrict the relative movement of the backing and the coupling lever and a regulating member, the said coupling lever, clip connected to the wiper arm has Kumitsui rotatably, wherein The lips, the gist of the wiper blade omission restricting portion is provided for regulating the exit from the engagement of said movement restriction member relative to the backing and the coupling lever.

According to the same configuration and the configuration of the invention described in claim 3, in order to include the movement regulating member engaged in the longitudinal direction with the backing and the coupling lever in order to regulate the relative movement of the backing and the coupling lever in the longitudinal direction, The relative position in the longitudinal direction can be fixed by assembling the movement restricting member after aligning the positions of the backing and the connecting lever. In this case, for example, the blade rubber and the coupling lever are assembled as in the case where the elastic locking portion for restricting the relative movement in the longitudinal direction with the backing is integrally formed on the coupling lever (conventional technology). Sometimes the elastic locking part is not caught. Therefore, it is possible to provide a wiper blade that is easy to assemble and that can prevent breakage (breaking or wear) during assembly.

According to the configuration of the first aspect of the present invention , the clip is provided with the slip-off restricting portion for restricting the movement restricting member from being engaged with the backing and the connecting lever. The assembly of the movement restricting member from the engaged state can be automatically restricted by assembling.

In the invention described in claim 2, in the wiper blade according to claim 1, in the coupling lever, with the shaft insertion hole is formed at a position of the rotation axis center of the clip, the shaft insertion hole communicating with and it has a part housing unit that is the movement restricting member Scheme 13 ml with the omission regulating unit, in that the clip is inserted into the shaft insertion hole is a support shaft rotatably supporting The gist.

  According to the same configuration, the removal restricting portion is a support shaft that is inserted into the shaft insertion hole and rotatably supports the clip. Therefore, the support shaft has two functions, for example, the clip The complexity of the shape can be suppressed.

In the invention according to claim 3 , a long blade rubber having a wiping portion for wiping the wiping surface, and provided along the longitudinal direction of the blade rubber for imparting rigidity and elasticity to the blade rubber. A leaf spring-like backing, and a lever holding portion that surrounds the periphery of the blade rubber and the base of the blade rubber and the backing in the longitudinal center portion of the backing and restricts the movement in the direction orthogonal to the longitudinal direction. A coupling lever that is directly or indirectly coupled to the wiper arm, and a longitudinally engaged movement of the backing and the coupling lever to restrict relative movement of the backing and the coupling lever in the longitudinal direction. and a regulating member, wherein the coupling lever, Iteori assembling possible clip is connected to the wiper arm is pivoted, the The coupling lever is formed with a shaft insertion hole at the center of the rotation axis of the clip, and the clip is formed with a pair of support shafts that are inserted into the shaft insertion hole and rotatably support the clip. , the tip of the support shaft is summarized in that the inclined surface height of the support shaft in the direction that does not coincide with the wiping surface direction is inclined to become lower in the use for state is formed.

According to this configuration, the distal end of the clip of the support shaft, the inclined surface inclined so that the height of the support shaft is decreased toward a not coincide direction to the wiping surface direction in (a wiper blade) used for state Since it is formed, it is possible to ensure wear resistance while improving assembly. Specifically, at the time of assembling, the clip can be easily assembled to the connecting lever by assembling the supporting shaft with respect to the shaft insertion hole from the lower side to the higher side of the supporting shaft. Moreover, in the use state after the assembly, since the inclined surface is set so that the height of the support shaft decreases in the direction not coincident with the wiping surface direction, the wiping surface from the support shaft to the shaft insertion hole is set. Even if force is transmitted in the direction (compared to the case where the inclined surface is inclined in the direction coinciding with the wiping surface direction), the support shaft comes into contact (sliding contact) in a wide area, and wear resistance is ensured. .

The invention according to claim 4, in the wiper blade according to claim 3, wherein the clip is a one in which the longitudinal direction of itself is substantially horizontally disposed in use for state, the inclined surface, the clip The gist is that the support shaft is formed so that the height of the support shaft decreases toward one end in the longitudinal direction.

  According to this configuration, the support shaft can be easily assembled to the shaft insertion hole in a state in which the clip is perpendicular to the connection lever, and the clip is substantially horizontal (with the connection lever in the use state after assembly). Parallel), even if force is transmitted from the support shaft to the shaft insertion hole in the wiping surface direction, the support shaft comes into contact (sliding contact) over a wide area, and wear resistance is improved.

  According to the present invention, it is possible to provide a wiper blade that can be easily assembled and can prevent breakage (breaking or wear) during assembly.

The perspective view of the wiper for vehicles in this Embodiment. 1 is a partially exploded perspective view of a vehicle wiper according to the present embodiment. FIG. 3 is a partial cross-sectional view of the vehicle wiper according to the present embodiment. FIG. 3 is a partial cross-sectional view of the vehicle wiper according to the present embodiment. (A), (b) The perspective view of the connection lever in this Embodiment. The perspective view which assembled | attached the backing in this Embodiment, the connection lever, and the clip. The perspective view of the clip in this Embodiment. The side view which assembled the backing in this Embodiment, the connection lever, and the clip. The perspective view of the wiper blade in this Embodiment. The perspective view of the wiper arm in this Embodiment. The side view for demonstrating the wiper for vehicles in this Embodiment. (A)-(c) The partial perspective view for demonstrating the wiper for vehicles in another example. (A) The perspective view before assembling the connection lever and clip in another example. (B) The perspective view corresponding to the use condition after the assembly | attachment of the connection lever and clip in another example. (A) Partial sectional drawing for demonstrating the assembly method in another example. (B) Partial sectional drawing of the wiper for vehicles in another example.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, 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 3 connected to the wiper arm 2. It consists of and. 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. Do exercise. 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.

  As shown in FIGS. 2 to 4, the wiper blade 3 has a long blade rubber 11 having a wiping portion 11 a for wiping the wiping surface (front glass), and a longitudinal direction of the blade rubber 11. A leaf spring-like backing 12 is provided for imparting rigidity and elasticity to the blade rubber 11. As shown in FIG. 3, the blade rubber 11 of the present embodiment includes a base portion 11b having a substantially rectangular cross section in the longitudinal direction, a constricted portion 11c extending downward from the center in the width direction of the base portion 11b, and the constricted portion 11c. And the wiping portion 11a extending further downward. Further, as shown in FIGS. 2 and 3, only one backing 12 of the present embodiment is provided on the wiper blade 3, and a backing engaging portion 12a is formed at the center in the longitudinal direction. Yes. The backing engaging portion 12a is formed in a shape in which both sides in the width direction of the backing 12 are notched to the center side in the width direction.

  Further, as shown in FIG. 3, the wiper blade 3 surrounds the periphery of the base portion 11 b of the blade rubber 11 and the backing 12 in the center portion in the longitudinal direction of the blade rubber 11 and the backing 12, and moves them in the longitudinal direction. A connecting lever 13 having a lever holding portion 13a for holding by restriction is provided.

  Specifically, the connecting lever 13 is made of a hard resin material, and as shown in FIGS. 2 to 4 and FIGS. 5 (a) and 5 (b), a substantially rectangular parallelepiped-shaped lever main body 13b, and FIGS. As shown in FIG. 5B, the lever main body 13b has an arm-shaped lever holding portion 13a extending downward from both sides in the width direction on the lower end surface and further extending inward in the width direction. As shown in FIG. 3, the lever holding portion 13 a of the present embodiment allows the base portion 11 b and the backing 12 to be placed in a state in which the backing 12 is in contact with (mounted on) the upper end surface of the base portion 11 b of the blade rubber 11. It is configured to surround.

  As shown in FIGS. 2 to 4 and FIG. 5 (a), an upper and lower penetrating portion 13c penetrating so as to communicate from above to the lever holding portion 13a is provided at one end in the longitudinal direction of the lever main body portion 13b. Is formed. The vertical penetrating portion 13c is formed in a substantially quadrangular shape when viewed from the vertical direction. Further, as shown in FIG. 4, the lower end portion of the upper and lower penetrating portion 13c has a smaller longitudinal interval, and a parts accommodating portion for accommodating a support part 14 (see FIG. 2) as a movement restricting member described later. 13d.

  Further, as shown in FIGS. 2 to 4 and FIGS. 5 (a) and 5 (b), one end side in the longitudinal direction of the lever main body portion 13b (a position corresponding to the upper and lower penetrating portions 13c) A shaft insertion hole 13e penetrating in a direction orthogonal to the direction side surface is formed. That is, the shaft insertion hole 13e communicates the outside with the upper and lower penetration part 13c (the part accommodating part 13d). In other words, the shaft insertion hole 13e extends out from the inner side surface in the width direction of the upper and lower penetration part 13c. Is formed.

  Further, as shown in FIGS. 2 and 5 (a) and 5 (b), the lever main body portion 13b extends in the up-down direction at the substantially center, and more specifically, the shaft center (rotation) of the shaft insertion hole 13e. A guide groove 13f extending along an arc concentric with the center of the axis) is formed.

  Further, as shown in FIGS. 5 (a) and 5 (b), a retaining wall 13g extending in the vertical direction protrudes from the other longitudinal end on both side surfaces of the lever main body 13b. Further, as shown in FIG. 5A, an upper wall portion 13h extending in the width direction protrudes from the other longitudinal end portion of the upper surface of the lever main body portion 13b so as to connect the upper end of the retaining wall portion 13g. Is formed.

  Further, as shown in FIG. 5A, a lower wall portion 13i that extends from the lower end of the retaining wall portion 13g to one end side in the longitudinal direction protrudes from the lower end portions on both side surfaces of the lever main body portion 13b. Yes. Further, as shown in FIG. 5 (a), the lower wall portion 13i is opposed to the end portion on the one end side in the longitudinal direction formed in an arc concave shape concentric with the shaft center (rotation shaft center) of the shaft insertion hole 13e. A surface 13j is formed.

Further, as shown in FIGS. 4 and 5 (a), an escape groove 13k is formed in the approximate center of the upper surface of the lever main body 13b.
Further, as shown in FIGS. 1, 2 and 9, the connecting lever 13 extends from one end in the longitudinal direction of the lever main body 13b to the tip in the longitudinal direction, and is smoothly connected to the fin portion 16 of the case 15 described later. A curved connecting portion 13l having a shape is formed.

  The connecting lever 13 configured in this way is assembled with its movement in the longitudinal direction with the backing 12 being restricted. Specifically, first, the backing 12 is inserted into the lever holding portion 13a of the connecting lever 13 along the longitudinal direction, and the parts accommodating portion 13d (see FIGS. 3 and 4) and the backing engaging portion 12a (see FIG. 2). ) In the longitudinal direction so that the positions in the longitudinal direction coincide with each other. Then, the support part 14 is passed through the upper and lower through-holes 13c from above and is fitted (dropped) into the parts accommodating portion 13d, and the backing 12 (backing engaging portion 12a) and the connecting lever 13 (part accommodating portion 13d). As a result, the connecting lever 13 and the backing 12 are restricted from moving in the longitudinal direction (positioned in the longitudinal direction). As shown in FIG. 3, the support part 14 according to the present embodiment includes a central portion 14a extending in the width direction when viewed from the longitudinal direction, and a pair of arm portions 14b extending downward from both ends of the central portion 14a. The central portion 14a is immersed in the part accommodating portion 13d and engaged with the parts accommodating portion 13d in the longitudinal direction, and each arm portion 14b is engaged with the backing engaging portion 12a in the longitudinal direction. It has become.

  And the clip 17 (refer FIG. 2) connected with the said wiper arm 2 is assembled | attached to the connection lever 13 so that rotation is possible at the rotation axis center (axis center of the said shaft insertion hole 13e) orthogonal to the both sides | surfaces. .

  As shown in FIG. 2, the clip 17 is a pair extending from the position corresponding to the rotation axis center (the axis center of the shaft insertion hole 13e) to the longitudinal base end side along both side surfaces of the lever main body 13b. Side wall 17a and an upper wall 17b that connects the pair of side walls 17a and extends along the upper surface of the lever main body 13b.

  As shown in FIGS. 2 and 3, a support shaft 17 c that rotatably supports the clip 17 by being inserted into the shaft insertion hole 13 e is formed on the inner side surface of the pair of side walls 17 a of the clip 17. ing. As shown in FIG. 3, the support shaft 17c is set to a length that protrudes into the upper and lower through-holes 13c, and the front end of the support shaft 17c is abutted against the upper surface of the support part 14 fitted in the parts accommodating portion 13d. It is set as a removal restricting portion 17e for coming into contact and restricting the upward removal of the support part 14. In the present embodiment, the shaft insertion hole 13e and the support shaft 17c constitute a rotation connecting portion.

  Further, as shown in FIGS. 2 and 6 to 8, engagement convex portions 17 f are respectively formed on the outer surfaces of the pair of side walls 17 a of the clip 17. The engagement convex part 17f is formed in the longitudinal direction one end side edge part (back side of the support shaft 17c) of the side wall 17a. Moreover, the engagement convex part 17f is formed in the center of the up-down direction in the side wall 17a. Further, the upper and lower end surfaces of the engagement convex portion 17f are formed substantially along the longitudinal direction, and only the other end portion in the longitudinal direction at the lower end surface thereof is a curved surface that is curved upward toward the other end side.

  Further, as shown in FIG. 6, the end of the upper wall 17 b of the clip 17 on the rotation shaft center side (end on the support shaft 17 c side and one end in the longitudinal direction) A notch 17g is formed to allow the above. That is, as shown in FIG. 2, the pair of side walls 17a of the clip 17 slightly extends to one end side in the longitudinal direction from the support shaft 17c. Is rotated in a direction that collides with the upper surface of the lever main body 13b during rotation, but a notch 17g is formed so as to allow rotation without forming a recess on the upper surface.

  As shown in FIGS. 7 and 8, the lower end surface of the side wall 17a of the clip 17 has an arcuate surface 17h centered on the rotation shaft center (the shaft center of the support shaft 17c and the shaft insertion hole 13e). Is formed. As shown in FIG. 8, the arc surface 17 h is set so as to face the facing surface 13 j of the connecting lever 13. The arcuate surface 17h of the present embodiment is set so as to face the facing surface 13j with a slight gap in the initial state (the state immediately after the assembly), and the rotation connecting portion (the shaft insertion hole 13e). And the support shaft 17c) are set so as to be in sliding contact with the facing surface 13j when wear occurs.

  Moreover, the lower end surface of the clip 17 on both side walls 17a at a position spaced from the center of the rotation axis (support shaft 17c) to the other end in the longitudinal direction is the center of the rotation axis as shown in FIGS. The upper lower end surface 17i is higher than the corresponding lower end surface (that is, the arc surface 17h). In other words, the lower end surface of both side walls 17a of the clip 17 of the present embodiment is an arc surface 17h in which only the lower part of the center of the rotation shaft (support shaft 17c) protrudes in an arc convex shape from the upper lower end surface 17i. .

  Further, as shown in FIG. 8, the other end in the longitudinal direction of the both side walls 17a of the clip 17 is vertically mounted between the connecting lever 13 and the longitudinal direction of the clip retaining wall 13g. It is set so that a gap S extending along the line is generated.

  Further, as shown in FIG. 7, guide convex portions 17j that fit into the guide grooves 13f (see FIG. 5) are formed on the inner side surfaces of the side walls 17a of the clip 17. This guide convex portion 17j is guided by the guide groove 13f in a state where it is fitted in the guide groove 13f (used state after assembly), and the clip 17 with respect to the connecting lever 13 according to the vertical end position of the guide groove 13f. This is for restricting further rotation.

  Further, as shown in FIGS. 2, 4, and 6, an elastic protrusion 17k that protrudes upward and has flexibility in the vertical direction is formed on the upper wall 17b of the clip 17. The elastic protrusion 17k is formed at a position corresponding to the escape groove 13k (see FIGS. 4 and 5A) of the connecting lever 13, and is assembled by the escape groove 13k (see FIGS. 4 and 6). ) Is allowed to bend downward.

  As shown in FIGS. 1 and 2, the wiper blade 3 surrounds the periphery of the base portion 11b of the blade rubber 11 and the backing 12 on both sides in the longitudinal direction of the connecting lever 13 (lever holding portion 13a). A pair of cases 15 each having a case holding portion 15a (see FIG. 2) that holds and controls movement in the orthogonal direction is provided.

  The case 15 is made of a soft (flexible) resin material, and the shape of the case holding portion 15a is the same as that of the lever holding portion 13a. That is, the lever holding portion 13a and each case holding portion 15a are connected in the longitudinal direction in an assembled state, and surround (accommodate) the base portion 11b and the backing 12 of the blade rubber 11 over the entire longitudinal direction. Has been.

  Further, the upper surface of the case 15 is made of a rubber material or an elastomer material, and a fin portion 16 is provided by two-color molding for converting running air into a pressing force toward the wiping surface. Specifically, the fin portion 16 is formed in a shape having a curved surface that becomes higher toward the vehicle rear side (from the wiping surface) at the stop position of the wiper blade 3. The curved connecting portion 13l of the connecting lever 13 gradually becomes a shape corresponding to the curved surface from the substantially rectangular parallelepiped lever main body portion 13b toward the fin portion 16 as shown in FIGS. It is formed as follows.

  In this embodiment, the upper end surfaces of the connecting portions of the case 15 (including the fin portion 16) and the connecting lever 13 (curved connecting portion 13l) on the side corresponding to the curved connecting portion 13l are flush with each other. Thus, in other words, the shape of the connecting portion between the two is formed so as to continuously shift. Further, as shown in FIGS. 2 and 9, the case 15 (including the fin portion 16) has a step portion 15b extending in the longitudinal direction so that the upper surface is covered with the connecting lever 13 (the curved connecting portion 13l). Is formed.

  Further, as shown in FIG. 1, the wiper blade 3 is fixed to both ends in the longitudinal direction of the backing 12, and the longitudinal end of the backing 12, the longitudinal end of the case 15 (including the fin portion 16), A cap 18 that covers the longitudinal end of the base 11b of the blade rubber 11 is provided.

The wiper blade 3 configured as described above has its clip 17 connected and fixed to the tip connecting portion 4 of the wiper arm 2.
As shown in FIGS. 2 and 10, the tip connecting portion 4 of the wiper arm 2 has an upper covering wall 4a that substantially covers the upper surface (of the upper wall 17b) of the clip 17 and an outer surface of the clip 17 (of both side walls 17a). Both side covering walls 4b are formed so as to cover substantially the same. As shown in FIG. 2, the both side covering walls 4 b are formed with engagement recesses 4 c that are vertically engaged with the engagement protrusions 17 f of the clips 17 by being assembled with the clips 17 along the longitudinal direction. Has been. The engaging recess 4c is formed in the center portion in the vertical direction of the both side covering walls 4b so that the front end side (one end side) in the longitudinal direction is opened, and the engaging projection 17f extends in the longitudinal direction from the opening (FIG. 11). When inserted and assembled (from the state shown in FIG. 8) to the state shown in FIG. 8, the engagement convex portion 17f is engaged in the vertical direction.

  Further, as shown in FIG. 10, a protrusion 4d as a retaining portion protruding toward the center in the width direction is formed on the inner side surface of the both side covering walls 4b of the tip connecting portion 4. As shown in FIG. 11, the protrusion 4 d is formed on the retaining wall of the coupling lever 13 in a state where the distal end coupling portion 4 is in a longitudinal position where the engagement concave portion 4 c does not engage with the engagement convex portion 17 f. It is formed so as to come into contact with the portion 13g in the longitudinal direction (state of a two-dot chain line). That is, the protrusion 4d is prevented from coming off when the tip connecting portion 4 is moved relative to the clip 17 in the longitudinal direction from the state where the tip connecting portion 4 is assembled to the clip 17 (see FIG. 8). It is provided so as to abut against the wall portion 13g in the longitudinal direction and restrict further relative movement (disconnection) in the longitudinal direction. Further, when the protrusion 4d is in contact with the retaining wall portion 13g in the longitudinal direction (see FIG. 11), the projection 4d is vertically disposed between the retaining wall portion 13g and the other longitudinal end portion of the both side walls 17a of the clip 17. It is provided so that movement in the vertical direction is allowed through the gap S extending in the direction.

  As a result, when assembling, the tip connecting portion 4 is first relatively moved downward with respect to the clip 17, and then the tip connecting portion 4 is relatively moved in the longitudinal direction (the engaging recess 4c becomes the engaging protrusion 17f). Will be assembled). On the other hand, when removing, the tip connecting portion 4 is first moved relative to the clip 17 in the longitudinal direction (the engaging concave portion 4c is removed from the engaging convex portion 17f), and then the tip connecting portion 4 is moved upward. It will be removed by relative movement.

Further, as shown in FIG. 8, the protrusion 4 d is formed at a position in contact with the upper lower end surface 17 i of the clip 17 in a state where the tip connecting portion 4 is assembled to the clip 17.
Further, the protrusion 4d is formed at a position in contact with the lower end of the guide convex portion 17j (see FIG. 7) in a state where the tip connecting portion 4 is assembled to the clip 17, and is formed in the guide groove 13f (see FIG. 5). It is provided so as to restrict the rotation of one of the clip 17 and the tip connecting portion 4 with respect to the connecting lever 13 by contacting the lower end. That is, the protrusion 4d is provided so as to restrict the rotation of the one while being integrated with the guide convex portion 17j and enhancing the rigidity in the state where the tip connecting portion 4 is assembled to the clip 17. .

  As shown in FIGS. 2, 4 and 10, the upper projection wall 4a of the distal end connecting portion 4 is assembled to the clip 17 (see FIG. 8), and the elastic protrusion 17k is downward. A fitting hole 4e is formed as a fitting portion to be engaged with the elastic protrusion 17k in the longitudinal direction by fitting the elastic protrusion 17k in an unbent state. This prevents the distal end connecting portion 4 and the clip 17 from moving relative to each other in the longitudinal direction unless any external force is applied to the elastic protrusion 17k.

Further, as shown in FIG. 3, a wrap portion 4f extending downward to a position coinciding with the backing 12 is formed on both side covering walls 4b of the tip connecting portion 4 in the vertical direction.
Next, the operation of the vehicle wiper 1 configured as described above will be described.

  In the vehicle wiper 1, the wiper blade 3 (excluding the clip 17) can be rotated with respect to the wiper arm 2 and the clip 17 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 17, the connecting lever 13, and the backing 12. The blade rubber wiping portion 11a is pressed and contacted with the windshield (wiping surface) over the entire length in the longitudinal direction. Further, during traveling, the traveling air is converted into a pressing force toward the windshield (wiping surface) by the fin portion 16, and the wiping portion 11a of the blade rubber is pressed against the windshield (wiping surface). For these reasons, when the wiper arm 2 is reciprocally rotated about the pivot axis, a good wiping operation is performed.

Next, the characteristic effects of the above embodiment will be described below.
(1) Since the support part 14 is provided so as to be engaged with the backing 12 and the coupling lever 13 in the longitudinal direction and restricts the relative movement in the longitudinal direction, the positions of the backing 12 and the coupling lever 13 are adjusted. By assembling the support parts 14, the relative positions in the longitudinal direction can be fixed. In this case, for example, the blade rubber and the coupling lever are assembled as in the case where the elastic locking portion for restricting the relative movement in the longitudinal direction with the backing is integrally formed on the coupling lever (conventional technology). Sometimes the elastic locking part is not caught. Therefore, it is possible to provide the wiper blade 3 that has good assembling properties and can suppress breakage (breaking or wear) during the assembling.

  (2) Since the clip 17 is provided with a slip-out restricting portion 17e (tip portion of the support shaft 17c) for restricting the support part 14 from slipping upward, the clip 17 is automatically attached to the connecting lever 13 by assembling. Further, it is possible to regulate the upward escape of the support part 14.

  (3) The removal restricting portion 17e is inserted into the shaft insertion hole 13e of the connecting lever 13 and serves as a support shaft 17c (its front end portion) that rotatably supports the clip 17, so that the support shaft 17c has two functions. For example, the complexity of the shape of the clip 17 can be suppressed.

  (4) The blade rubber 11 and the backing 12 are held while the movement in the direction perpendicular to the longitudinal direction is restricted by the lever holding portion 13a and the case holding portion 15a. Since the connecting lever 13 connected to the wiper arm 2 via the clip 17 is assembled with the movement in the longitudinal direction restricted with respect to the backing 12, the backing 12 does not shift in the longitudinal direction with respect to the connecting lever 13. Fixed. Moreover, since the case 15 is paired and the lever holding portion 13a of the connecting lever 13 is directly disposed on the upper surface 12b of the backing 12 between the case holding portions 15a of each case 15, for example, it corresponds to the entire length of the backing 12 Compared with the structure provided with a connecting lever that holds the center in the longitudinal direction of the case as a single case, the overlapping of the members in the height direction of the wiper blade 3 can be reduced. As a result, the height from the wiping surface can be sufficiently reduced, and the wiper blade 3 having a slim and slim design with good design can be obtained.

  (5) Since a notch 17g for allowing its own rotation is formed at the end of the upper wall 17b of the clip 17 on the center side of the rotation axis (end on the side of the support shaft 17c), While the height of the wall 17b from the wiping surface is kept low, the clip 17 can be allowed to rotate without forming a recess for allowing the upper surface of the lever main body 13b to rotate. It should be noted that the fact that the recess for allowing the rotation to be allowed to be formed on the upper surface of the lever main body portion 13b contributes to maintaining high rigidity of the lever main body portion 13b (the connecting lever 13).

  (6) At the pivot shaft center positions on both side surfaces of the lever main body portion 13b of the coupling lever 13 and on both side walls 17a of the clip 17, the pivot coupling portions (the shaft insertion hole 13e and the support shaft are coupled to each other so as to be pivotable). 17c) enables the clip 17 to rotate with respect to the connecting lever 13. Further, a circular arc surface 17h concentric with the center of the rotation shaft is formed on the lower end surface of both side walls 17a of the clip 17, and an opposing surface 13j facing the circular arc surface 17h is formed on the connecting lever 13. Therefore, it is possible to add a portion that is rotatably supported to a portion other than the rotation connecting portion (the shaft insertion hole 13e and the support shaft 17c). That is, the clip 17 always receives a force (pressing force) downward (in the direction of the wiping surface) from the wiper arm 2, but by receiving the arc surface 17 h at the lower end of the both side walls 17 a with the opposing surface 13 j of the connecting lever 13. The durability of the rotation connecting portion (the shaft insertion hole 13e and the support shaft 17c) can be improved. In the present embodiment, in the initial state (the state immediately after assembly), the arc surface 17h is set so as to face the facing surface 13j with a slight gap, so the dimensional accuracy is not increased. Even in this case, the assemblability is improved and smooth rotation by the rotation connecting portion (the shaft insertion hole 13e and the support shaft 17c) is ensured. Then, when slight wear occurs in the rotation connecting portion (the shaft insertion hole 13e and the support shaft 17c), the arcuate surface 17h and the connecting lever 13 are in sliding contact with each other, so that the further rotation connecting portion (shaft insertion) It becomes possible to suppress wear of the hole 13e and the support shaft 17c).

  (7) Since the connecting lever 13 is formed with the curved connecting portion 13l connected to the fin portion 16 of the case 15, the case 15 and the connecting lever 13 are smoothly connected (a shape in which a sudden step is suppressed) and Can improve aesthetics. In addition, since a steep step can be suppressed, rectification of the traveling wind can be improved.

  (8) Since the connecting portion between the case 15 (including the fin portion 16) and the connecting lever 13 (curved connecting portion 13l) is set so that the upper end surfaces thereof are flush with each other, the appearance may be good. it can. Moreover, since the case 15 (including the fin portion 16) is formed with a step portion 15b extending in the longitudinal direction so that the upper surface is covered with the connecting lever 13 (the curved connecting portion 13l), for example, the step portion 15b Intrusion of foreign matter (snow, dead leaves, etc.) from the connecting portion of the upper end surface to the inner side can be reduced.

  (9) The lever holding portion 13a and the case holding portion 15a are configured to surround and hold the base portion 11b and the backing 12 with the backing 12 in contact with the upper end surface of the base portion 11b of the blade rubber 11. There is no wall interposed between the blade rubber 11 and the backing 12. Therefore, the height from the wiping surface of the wiper blade 3 can be further reduced as compared with the one having the wall.

  (10) Since the front end connecting portion 4 of the wiper arm 2 is formed with a wrap portion 4f extending downward to a position coinciding with the backing 12 in the vertical direction, for example, the lever holding portion 13a is screwed together with the backing 12 in this portion. Even if it is attempted to be deformed as described above, the deformation can be suppressed by the wrap portion 4f.

  (11) Engagement projections 17 f are formed on the outer side surfaces of the side walls 17 a of the clip 17, and the clips 17 are assembled along the longitudinal direction on the side covering walls 4 b of the tip connecting portion 4 of the wiper arm 2. As a result, the engagement concave portion 4c that engages with the engagement convex portion 17f in the vertical direction is formed, so that the vertical movement of the wiper arm 2 with respect to the clip 17 is restricted. In this case, a pair of holding portions extending so as to hold the lower surface of the clip, for example, are formed at positions corresponding to the rotation axis center where the clip 17 rotates (the members are overlapped in the vertical direction and the wiping surface is formed). It is possible to reduce the height from the wiping surface compared to the case where the height from the wiping surface increases. Further, for example, the tip connecting portion 4 of the wiper arm 2 can be made simpler than that in which the holding portion is formed, and the manufacture thereof can be facilitated.

  (12) The connecting lever 13 is provided with a retaining portion formed on the tip connecting portion 4 in a state where the tip connecting portion 4 is in a longitudinal position where the engaging concave portion 4c does not engage with the engaging convex portion 17f. Since the retaining wall portion 13g that abuts the projection 4d) in the longitudinal direction is provided, the clip 17 (and thus the wiper blade 3) is unlikely to fall off from the tip connecting portion 4. Specifically, in the above configuration, the tip connecting portion 4 of the wiper arm 2 is first relatively moved downward with respect to the clip 17, and then the tip connecting portion 4 is relatively moved in the longitudinal direction (the engaging recess 4 c is engaged with the engaging projection). It is assembled (by engaging with the portion 17f). Conversely, the distal end coupling portion 4 of the wiper arm 2 is first moved relative to the clip 17 in the longitudinal direction (the engagement concave portion 4c is removed from the engagement convex portion 17f), and then the distal end coupling portion 4 is moved upward. Move it and remove it. For example, in a state where the vehicle wiper 1 is attached to the vehicle, even if the clip 17 moves relative to the distal end connecting portion 4 in the longitudinal direction, it is applied by an urging mechanism (not shown) applied to the wiper arm 2. Since the tip connecting portion 4 is difficult to relatively move upward due to the force, the clip 17 side (that is, the wiper blade 3) does not easily fall off from the tip connecting portion 4.

  (13) The lower end surface of the clip 17 at a position separated from the center of the rotational axis of rotation of the clip 17 is an upper lower end surface 17i whose position is higher than the lower end surface (arc surface 17h) of the position corresponding to the center of the rotational axis. However, this is possible due to the absence of a rotation connecting portion (support shaft 17c) provided at a position corresponding to the center of the rotation axis. The retaining portion is a protrusion 4d that protrudes so as to come into contact with the upper lower end surface 17i in a state where the tip connecting portion 4 is assembled to the clip 17, so that the engaging recess 4c and the engaging protrusion In addition to 17f, the upper covering wall 4a and the protrusion 4d also (supplementally) restrict the vertical movement of the wiper arm 2 (tip connecting portion 4) with respect to the clip 17. Therefore, in the assembled state, the vertical movement of the wiper arm 2 (tip connecting portion 4) with respect to the clip 17 can be firmly restricted.

  (14) The protrusion 4d is disposed so as to contact the lower end of the guide projection 17j of the clip 17 and regulates one rotation of the clip 17 relative to the connecting lever 13 by contacting one end of the guide groove 13f. Therefore, the rotation of the protrusion 4d and the guide protrusion 17j can be restricted within a preset range while enhancing the rigidity of each other.

  (15) An elastic protrusion 17k is formed on the upper wall 17b of the clip 17, and the elastic protrusion 17k is fitted to the upper covering wall 4a of the tip connecting portion 4 in a state where the elastic protrusion 17k is not bent downward. Thus, a fitting hole 4e is formed which engages with the elastic protrusion 17k in the longitudinal direction. Therefore, if any external force is not applied to the elastic protrusion 17k, the distal end connecting portion 4 and the clip 17 are prevented from relatively moving in the longitudinal direction.

The above embodiment may be modified as follows.
In the embodiment described above, the clip 17 is provided with the removal restricting portion 17e (the tip portion of the support shaft 17c) for restricting the upward removal of the support part 14. However, the present invention is not limited to this. It is good also as a clip in which the omission control part 17e is not provided. In this case, for example, the support part (movement restricting member) may include a retaining claw for restricting the support part (movement restricting member) from slipping in the direction opposite to its assembly direction (engaging with the connecting lever). Even if it does in this way, it can assemble easily and can control the omission of a support part (movement regulation member) automatically. For example, it is good also as a structure by which a support part (movement control member) is press-fitted and fixed. Further, for example, a support part (movement restriction member) may be bonded and fixed.

  Further, for example, the clip may not be provided with the removal restricting portion 17e, and the movement restricting member may be integrally formed on the clip itself. If it does in this way, the increase in a number of parts can be suppressed compared with what provided support parts 14 (movement regulation member) separately.

  In addition, the disconnection restricting portion 17e is the tip of the support shaft 17c that is inserted into the shaft insertion hole 13e of the connecting lever 13 and supports the clip 17 so as to be rotatable. If possible, the drop-out restricting portion may be provided in another portion of the clip 17 (a portion different from the support shaft 17c).

  In the above embodiment, the lever main body portion 13b is formed with the upper and lower penetrating portion 13c penetrating so as to communicate from the upper side to the lever holding portion 13a. However, the present invention is not limited to this, and may be fitted in another configuration. For example, you may change as shown to Fig.12 (a)-(c). In other words, the upper and lower penetrating portion 13c of the connecting lever 13 of the above embodiment does not penetrate upward and has a top wall 13m. The support part 14 is first inserted into the lever body 13b from the shaft insertion hole 13e (from the width direction as shown in FIG. 12 (a)) (as shown in FIG. 12 (b)). After), it is fitted into the lower part accommodating portion 13d (see FIG. 3) (dropped (see FIG. 12C)), and the backing 12 (backing engaging portion 12a) and the connecting lever 13 (part accommodating portion 13d). ) In the longitudinal direction. If it does in this way, the rigidity of connecting lever 13 (lever main-body part 13b) will be made high by making it the composition which has the top wall 13m, for example in the structure where the up-and-down penetration part 13c does not penetrate upwards. Can do.

  -Although the support shaft 17c of the said embodiment was made into the simple column shape, it is not limited to this, For example, it changes into the support shaft in which the inclined surface for improving assembly property was formed in the front-end | tip. Also good.

  Specifically, it may be changed as shown in FIGS. 13A and 13B and FIGS. 14A and 14B. The tip of the support shaft 22 of the clip 21 is inclined so that the height of the support shaft 22 decreases in a direction not coincident with the wiping surface direction in the use state after assembly (see FIG. 13B). An inclined surface 22a is formed. Specifically, the clip 21 of this example is in a used state after assembly (the guide convex portion 17j is fitted in the guide groove 13f, as in the above embodiment, and is shown in FIGS. 13B and 14B). In the state shown in (), the longitudinal direction of the connecting lever 13 is arranged substantially horizontally. And the inclined surface 22a is formed so that the height of the support shaft 22 may become low toward the longitudinal direction one end side of the clip 21, as shown to Fig.13 (a) and Fig.14 (a). In addition, the inclined surface 22a in this example is formed in approximately half of the tip (top surface) of the support shaft 22, and the remaining approximately half is a flat surface having a constant height of the support shaft 22. Further, the notch 23 in the clip 21 of this example is greatly cut out as compared with the notch 17g of the above embodiment, and the pair of support shafts 22 are easily bent so as to be separated from each other, as shown in FIG. As described above, the support shaft 22 can be inserted into the shaft insertion hole 13e and assembled with the clip 21 perpendicular to the connecting lever 13. In this example, the arc surface 17h and the opposing surface 13j of the above embodiment are not formed, and this also enables the above-described assembly.

  If it does in this way, wear resistance can be improved, improving assembly nature. Specifically, at the time of assembly, as shown in FIGS. 13A and 14A, the support shaft 22 is assembled to the shaft insertion hole 13e from the lower side to the higher side of the support shaft 22 as shown in FIGS. In other words, it can be easily assembled by inserting the support shaft 22 into the shaft insertion hole 13e with the clip 21 perpendicular to the connecting lever 13 and assembling. Further, in the use state after assembly (the state in which the guide convex portion 17j is fitted in the guide groove 13f, and the state shown in FIG. 14B), the wiping surface direction from the support shaft 22 to the shaft insertion hole 13e. Even if the force is transmitted (compared to the case where the inclined surface 22a is inclined in a direction coinciding with the wiping surface direction), the support shaft 22 comes into contact (sliding contact) in a wide area, and wear resistance is improved.

  In this example, as in the above embodiment, as shown in FIG. 14 (b), the support shaft 22 (the tip thereof) constitutes the drop-out restricting portion 22b. By forming 22a, the support shaft 14 is moved upward (in the direction of the wiping surface) by a portion different from the portion where the height of the support shaft 22 is lowest (the support shaft 22 contacts in a wide area). It is possible to more reliably regulate the omission.

-You may form the inclined surface for improving an assembly | attachment property in the corner | angular of the lower end (wiping surface side in the use condition after an assembly | attachment) in the guide convex part 17j of the said embodiment and another example.
In the above embodiment, the upper wall 17b of the clip 17 is formed with the notch 17g for allowing its own rotation. However, the present invention is not limited to this, for example, on the upper surface of the lever main body 13b. A recess for allowing rotation may be formed.

  In the above embodiment, the lower surface of the side wall 17a of the clip 17 is formed with the circular arc surface 17h, and the connecting lever 13 is formed with the opposing surface 13j facing the circular arc surface 17h. Alternatively, the arc surface 17h and the opposed surface 13j may not be formed.

  In the above embodiment, the connecting lever 13 is formed with the curved connecting portion 131 that smoothly connects to the fin portion 16 of the case 15, but is not limited thereto, and the bending connecting portion 131 is not formed. It is good also as a connection lever. Although the case 15 is provided with the fin portion 16, the present invention is not limited to this. For example, when the vehicle wiper for wiping the rear glass is used, the case may be provided with no fin portion 16. .

  In the above embodiment, the connecting portion between the case 15 (including the fin portion 16) and the connecting lever 13 (curved connecting portion 13l) is set so that the upper end surfaces thereof are flush with each other. It is good also as a structure which a level | step difference produces in the upper end surface of a connection part, without being limited to. Further, the case 15 (including the fin portion 16) is provided with a step portion 15b extending in the longitudinal direction so that the upper surface is covered with the connecting lever 13 (the curved connecting portion 13l). The stepped portion 15b may not be formed.

  In the above embodiment, the lever holding portion 13a and the case holding portion 15a are configured to surround the base portion 11b and the backing 12 in a state where the backing 12 is in contact with the upper end surface of the base portion 11b of the blade rubber 11. However, the present invention is not limited to this, and a wall may be interposed between the blade rubber 11 and the backing 12. The wall may be integrally formed with the lever holding portion 13a and the case holding portion 15a, or may be provided separately.

  In the above embodiment, the distal end connecting portion 4 of the wiper arm 2 is formed with the wrap portion 4f extending downward to the position that coincides with the backing 12 in the vertical direction. It is good also as a front-end | tip connection part in which 4f is not formed.

  In the above embodiment, the engaging projections 17 f are formed on the both side walls 17 a of the clip 17, and the clip 17 is engaged with the both sides covering wall 4 b of the tip connecting portion 4 by being assembled along the longitudinal direction. Although the engaging recess 4c that engages with the convex portion 17f in the vertical direction is formed, the configuration in which the clip 17 and the tip connecting portion 4 are engaged in the vertical direction may be changed to another configuration.

  In the above embodiment, the tip connecting portion 4 is provided with the protrusion 4d as the retaining portion, and the connecting lever 13 is provided with the retaining wall portion 13g. However, the present invention is not limited to this. It is good also as a structure which is not provided.

  In the above embodiment, the retaining portion is the protrusion 4d that protrudes so as to contact the upper lower end surface 17i of the clip 17. However, the present invention is not limited to this, for example, on the side walls 17a of the clip 17 A slit extending in the longitudinal direction and having an open end may be formed, and the slit may be a protrusion arranged to be movable in the longitudinal direction.

  In the above embodiment, the protrusion 4d is disposed so as to contact the lower end of the guide convex portion 17j of the clip 17. However, the present invention is not limited to this, and the position is shifted with respect to the lower end of the guide convex portion 17j. May be provided.

The technical idea that can be grasped from the above embodiment and other examples will be described below together with the effects thereof.
(A) In the wiper blade according to claim 1, the connection lever is provided with a clip that is rotatably assembled to a rotation shaft center orthogonal to both side surfaces thereof and connected to the wiper arm, and the movement The wiper blade according to claim 1, wherein the restricting member is integrally formed with the clip.

  According to this configuration, since the movement restricting member is integrally formed with the clip that is rotatably assembled to the connecting lever and is connected to the wiper arm, an increase in the number of parts can be suppressed.

  (B) The wiper blade according to claim 1, wherein the movement restricting member includes a retaining claw for restricting the movement restricting member in a direction opposite to its assembling direction.

  According to this configuration, since the movement restricting member has the retaining claw for restricting the slippage in the direction opposite to its assembly direction, it can be easily assembled and the slippage can be automatically regulated. .

  DESCRIPTION OF SYMBOLS 2 ... Wiper arm, 3 ... Wiper blade, 11 ... Blade rubber, 11a ... Wiping part, 11b ... Base, 12 ... Backing, 13 ... Connecting lever, 13a ... Lever holding part, 13d ... Parts accommodating part, 13e ... Shaft insertion hole, DESCRIPTION OF SYMBOLS 14 ... Support parts (movement control member), 17, 21 ... Clip, 17c, 22 ... Support shaft, 17e, 22b ... Drop-out control part (tip part of support shaft), 22a ... Inclined surface.

Claims (4)

A long blade rubber having a wiping portion for wiping the wiping surface;
A leaf spring-like backing provided along the longitudinal direction of the blade rubber for imparting rigidity and elasticity to the blade rubber;
A lever holding portion that surrounds the periphery of the base of the blade rubber and the backing in the longitudinal center portion of the blade rubber and the backing and restricts the movement in the direction perpendicular to the longitudinal direction and holds the same directly on the wiper arm, or A coupling lever coupled indirectly;
A movement restricting member engaged in the longitudinal direction with the backing and the connecting lever to restrict the relative movement in the longitudinal direction between the backing and the connecting lever ;
A clip connected to the wiper arm is rotatably attached to the connection lever.
The wiper blade according to claim 1, wherein the clip is provided with a slip-out restricting portion for restricting the slip-out of the movement restricting member with respect to the backing and the connecting lever . The wiper blade according to claim 1 ,
The said coupling lever, together with the shaft insertion hole is formed at a position of the rotation axis center of the clip, it has a part housing unit that is the movement restricting member Scheme 13 ml communicates with the shaft insertion hole ,
The wiper blade according to claim 1, wherein the removal restricting portion is a support shaft that is inserted into the shaft insertion hole and rotatably supports the clip. A long blade rubber having a wiping portion for wiping the wiping surface;
A leaf spring-like backing provided along the longitudinal direction of the blade rubber for imparting rigidity and elasticity to the blade rubber;
A lever holding portion that surrounds the periphery of the base of the blade rubber and the backing in the longitudinal center portion of the blade rubber and the backing and restricts the movement in the direction perpendicular to the longitudinal direction and holds the same directly on the wiper arm, or A coupling lever coupled indirectly;
A movement restricting member engaged in the longitudinal direction with the backing and the connecting lever to restrict relative movement in the longitudinal direction between the backing and the connecting lever;
With
Wherein the coupling lever, Iteori assembling possible clip is connected to the wiper arm is pivoted,
The coupling lever is formed with a shaft insertion hole at the center of the rotation axis of the clip.
The clip is formed with a pair of support shafts that are inserted into the shaft insertion holes and rotatably support the clip.
Wiper blade, wherein said a front end of the support shaft, the inclined surface height of the support shaft in the direction that does not coincide with the wiping surface direction is inclined to become lower in the use for state is formed. The wiper blade according to claim 3 , wherein
The clip is a one in which the longitudinal direction of itself is substantially horizontally disposed in use for state,
The wiper blade according to claim 1, wherein the inclined surface is formed such that a height of the support shaft decreases toward one end in a longitudinal direction of the clip.