JP2014019218A - Wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper blade capable of improving the effect of removal prevention of a blade rubber without impairing versatility of cover members and working efficiency of attachment and replacement of the blade rubber.SOLUTION: A movable cover member 15 rotatably coupled to a yoke lever 14 is provided with a holding claw 15b (holding part) locked in a longitudinal direction with respect to a locking projection part 23 and a stopper part 24 of a blade rubber 17. A cap 18 (removal prevention member) lockable in the longitudinal direction with respect to the blade rubber 17 is detachably disposed at a tip portion of the movable cover member 15.

Description

  The present invention relates to a wiper blade for wiping a windshield surface of a vehicle, for example.

  Conventionally, in a wiper blade, as in Patent Document 1, for example, a blade rubber is held by a lever assembly connected to a wiper arm, and a cover member is rotatably connected to both end portions in the longitudinal direction of the lever assembly to What is covered is known. The blade rubber is pressed against a wiping surface such as a windshield by a pressing force transmitted from the wiper arm via the lever assembly. Further, the cover member holds the end portion of the blade rubber by the holding claws, and the cover member is movable in accordance with the deformation in the direction perpendicular to the wiping surface of the blade rubber following the curved surface shape of the wiping surface. . Further, the holding claw of one cover member is locked by the locking portion provided in the holding groove of the blade rubber, and the blade rubber may come out from the wiper blade (lever assembly and cover member) in the longitudinal direction. It is prevented.

Japanese Patent No. 4227083

  By the way, in recent years, the wiper blade on the passenger's seat side has been arranged in an oblique position from the wiper blade on the driver's seat side at the stop position due to the setting of the wiping pattern, and is connected to the wiper arm in an oblique position with a large angle. There are many things. Therefore, a component force acts on the blade rubber in the longitudinal direction of the wiper blade by the frictional force with the wiping surface with respect to the rotation operation of the wiper arm, but the component force increases. Particularly in cold regions, when the wiper blade is stopped at the stop position, the blade rubber may stick to the wiping surface (eg, windshield) due to freezing. When the wiper arm rotates in this state, the above component force acts as an excessive force, and the engagement state between the blade rubber engagement portion and the cover member holding claw is released by the elastic deformation of the engagement portion, and the blade There was a risk that the rubber would slip out of the wiper blade (lever assembly and cover member).

  As a solution for this, for example, the amount of engagement between the holding claw of the cover member and the engagement portion of the blade rubber is increased to strengthen the longitudinal engagement between the holding claw of the cover member and the engagement portion of the blade rubber. A configuration that makes it difficult to remove the blade rubber is conceivable. However, with this configuration, when replacing the blade rubber, it is difficult to remove the blade rubber from the holding claws of the cover member, and the blade rubber replacement workability is deteriorated. Further, in this configuration, since it is necessary to prepare a cover member having a cold region specification separately from the general specification, the versatility of the cover member is deteriorated and the parts management becomes complicated.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to improve the effect of preventing the removal of the blade rubber without impairing the versatility of the cover member and the assembling / replacing workability of the blade rubber. An object of the present invention is to provide a wiper blade that can be made to operate.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a blade rubber for wiping the surface of the wiping surface, and holding the blade rubber to distribute the pressing force from the wiper arm in the longitudinal direction of the blade rubber. A rubber holder and an end portion of the blade rubber projecting from a longitudinal end portion of the rubber holder are covered, and a holding portion for holding the end portion of the blade rubber is provided at one end, and the other end is rotated to the rubber holder. A wiper blade having a cover member movably connected thereto, wherein the holding portion of the cover member is engaged with the blade rubber in a longitudinal direction, and the cover member is long with respect to the blade rubber. A retaining member that can be locked in the direction is detachably provided.

  In the present invention, not only the holding portion of the cover member but also the retaining member further attached to the cover member prevents the rubber rubber from being removed from the rubber holder and the cover member in the longitudinal direction. For this reason, even when the blade rubber is driven with the blade rubber stuck to the wiping surface due to freezing and excessive force in the longitudinal direction is applied to the blade rubber, the blade rubber is In addition to retaining, the retaining member can more firmly prevent the blade rubber from coming out in the longitudinal direction.

  In addition, since a retaining member can be retrofitted to the cover member of an existing wiper blade, the retaining member is required when it is necessary to prevent the blade rubber from coming off, such as when used in cold regions where freezing is likely to occur. It is possible to cope with this by simply mounting the to the existing wiper blade. Further, since the retaining member can be attached to and detached from the cover member, the blade rubber can be replaced after the retaining member is removed. For this reason, when replacing the blade rubber, the retaining member does not hinder the removal of the blade rubber from the wiper blade, and the blade rubber can be easily replaced.

In this way, it is possible to strongly prevent the blade rubber from coming off without impairing the versatility of the cover member and the assembling / replacement workability of the blade rubber.
According to a second aspect of the present invention, in the wiper blade according to the first aspect, the blade rubber is attached to the rubber holder along a longitudinal direction thereof, and the retaining member is attached to the blade rubber with respect to the blade rubber. The rubber is locked in the anti-mounting direction of the rubber.

  In the present invention, the blade rubber can be easily removed in the anti-attachment direction, and the retaining member is locked in the anti-attachment direction with respect to the blade rubber, so that the removal of the blade rubber can be more effectively suppressed by the retaining member.

According to a third aspect of the present invention, in the wiper blade according to the first or second aspect, the retaining member is locked to a longitudinal end portion of the blade rubber.
In this invention, since it is not necessary to change the shape of the blade rubber so as to be configured to be locked to the retaining member, the existing blade rubber can be used as it is. For this reason, it becomes possible to suppress omission without impairing the versatility of the blade rubber.

According to a fourth aspect of the present invention, in the wiper blade according to any one of the first to third aspects, the retaining member is locked to the holding portion of the cover member.
In this invention, since it is not necessary to add the structure for fixing the retaining member to the cover member, the retaining member can be mounted without impairing the versatility of the cover member.

  The invention according to claim 5 is the wiper blade according to any one of claims 1 to 4, wherein the cover member has a shape extending along a longitudinal direction of the blade rubber, and the retaining member is The blade rubber is attached to a front end portion of the cover member that covers a longitudinal end portion of the blade rubber.

  In this invention, since the retaining member is attached to the end portion in the longitudinal direction of the wiper blade, it is possible to suppress the influence of the retaining member on the appearance design of the wiper blade. Therefore, the retaining member can be configured without deteriorating the design of the wiper blade.

  The invention according to claim 6 is the wiper blade according to any one of claims 1 to 5, wherein the blade rubber protrudes outward from both longitudinal ends of the rubber holder to form a curved surface shape of the wiping surface. And a pair of the cover members are provided to cover the following end portions of the blade rubber, and the holding portions of the cover members are end portions in the longitudinal direction of the blade rubber. The holding portion of one of the cover members is locked in the longitudinal direction by a locking portion provided at one end portion in the longitudinal direction of the blade rubber, and the one cover member The retaining member is attached to the housing.

  In this invention, the holding part of one cover member is latched in the longitudinal direction by the latching part of the blade rubber, thereby preventing the blade rubber from coming out of the rubber holder and the cover member in the longitudinal direction. Further, since the retaining member is further attached to the cover member on the side from which the removal is prevented, the work can be efficiently performed when the retaining member is attached or when the blade rubber is replaced, and the locking state between the holding portion and the locking portion is maintained. The retaining member can be attached while checking.

  Therefore, according to the invention described above, it is possible to provide a wiper blade capable of improving the effect of preventing the removal of the blade rubber without impairing the versatility of the cover member and the assembling / replacing workability of the blade rubber. .

It is a perspective view of the wiper of a 1st embodiment. (A) is the front view of the wiper blade of the same form, (b) is an enlarged view of the cap vicinity of the figure (a). It is a disassembled perspective view which shows the state which removed the cap of the wiper blade of the same form. It is a side view of the wiper blade of the same form. It is a bottom view of the cover member of the same form. It is sectional drawing which shows the relationship between the cap of the same form, a blade rubber, and a holding nail. It is a perspective view which expands and shows the edge part of the wiper blade of 2nd Embodiment. It is a front view which expands and shows the edge part of the wiper blade of the same form. It is a disassembled front view which shows the state which removed the retaining member of the wiper blade of the same form. It is a side view of the wiper blade of the same form. It is a perspective view which expands and shows the edge part of the wiper blade of 3rd Embodiment. It is a front view which expands and shows the edge part of the wiper blade of the same form. It is a side view of the wiper blade of the same form. It is a perspective view which shows the relationship between the securing member of the same form, and a blade rubber. It is a bottom view which shows the relationship between the securing member of the same form, and a movable cover member.

(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a wiper 10 according to the present embodiment is a vehicle wiper that wipes raindrops and the like adhering to the surface (wiping surface G) of a windshield of a vehicle, and includes a wiper arm 11 and a tip portion of the wiper arm 11. And a wiper blade 12 that is supported by and disposed in contact with the wiping surface G. In the wiper 10, the wiper blade 12 reciprocally swings when the wiper arm 11 rotates by a predetermined angle by a wiper motor (not shown), and the wiper blade 12 swings to wipe the wiping surface G. The wiper arm 11 is provided with a spring (not shown) for generating a pressing force that presses the wiper blade 12 against the wiping surface G.

  As shown in FIGS. 1 and 2A, the wiper blade 12 includes a main lever 13, two yoke levers 14, two movable cover members 15 and 16 (cover members), a blade rubber 17, and a retaining member. And a cap 18 as a member. In the present embodiment, the main lever 13 and the yoke lever 14 constitute a rubber holder as a configuration for distributing the pressing force from the wiper arm 11 in the longitudinal direction of the blade rubber 17.

  The main lever 13 and the movable cover members 15 and 16 are made of a resin material. The main lever 13 is disposed at the center of the wiper blade 12 in the longitudinal direction, and the movable cover members 15 and 16 are disposed at both sides of the main lever 13 in the longitudinal direction. 12 upper outer shells are formed. Of the two movable cover members 15 and 16, the movable cover member 15 is disposed on the base end side of the wiper blade 12 (the side near the rotational drive shaft of the base end of the wiper arm 11). The movable cover member 16 is disposed on the side.

  The main lever 13 and the movable cover members 15 and 16 are formed in a substantially U shape with a cross section orthogonal to the longitudinal direction opened to the wiping surface G side, and below the main lever 13 and the movable cover members 15 and 16 A blade rubber 17 formed in a long shape with a rubber material is disposed along the longitudinal direction of the main lever 13 and the movable cover members 15 and 16. The main lever 13 and the movable cover members 15 and 16 are respectively formed with fin portions F1 and F2 for converting a force received from the traveling wind into a pressing force toward the wiping surface G.

  The main lever 13 is pivotably and detachably coupled to the tip of the wiper arm 11 via a coupling member 20 (see FIG. 1) at the center thereof. Further, as shown in FIG. 2 (a), rotation shaft portions 13a are provided at both longitudinal ends of the main lever 13, and the central portion of the yoke lever 14 is assembled to each rotation shaft portion 13a. A yoke lever 14 is rotatably supported at each end of the lever 13. Note that the axis of the rotation shaft portion 13a is parallel to the width direction of the wiper blade 12 (the direction orthogonal to the paper surface in FIG. 2A).

  The base ends of the movable cover members 15 and 16 are assembled at the rotation shafts 15a and 16a, respectively, slightly outside the rotation connecting portion at the center of each yoke lever 14, and are attached to the yoke levers 14 respectively. On the other hand, the movable cover members 15 and 16 are rotatably supported. A gripping portion 14a that forms a pair in the width direction is formed at both ends of each yoke lever 14, and the blade rubber 17 is gripped at a predetermined interval in the longitudinal direction by the gripping portion 14a.

  As shown in FIGS. 2B and 3, holding grooves 17 a extending along the longitudinal direction are formed on both sides in the width direction of the blade rubber 17, and the holding portions 14 a of the yoke lever 14 are formed in the holding grooves 17 a. It is inserted. At a position above the holding groove 17 a of the blade rubber 17, a pair of backings 21 as a leaf spring member having a length in the longitudinal direction equivalent to that of the blade rubber 17 is mounted. Further, a lip portion 17b that contacts the wiping surface G is formed at a position below the holding groove 17a of the blade rubber 17 so as to be tiltable over the entire longitudinal direction.

  Here, the pressing force to the wiping surface G side that the main lever 13 receives from the wiper arm 11 is distributed and transmitted to the blade rubber 17 from a total of four gripping portions 14 a provided at both ends of each yoke lever 14, and further, the backing 21 Is distributed in the longitudinal direction of the blade rubber 17. Then, each yoke lever 14 rotates with a curved deformation (following) in the height direction (perpendicular to the wiping surface G) of the blade rubber 17 following the curved surface shape of the wiping surface G. The blade rubber 17 is supported so as not to prevent smooth follow-up to the wiping surface G. Further, the end portion of the blade rubber 17 projecting a predetermined length outward from the gripping portion 14a of each yoke lever 14 is configured as a follow-up end portion 17x that freely follows bending deformation in the direction perpendicular to the wiping surface.

  Each movable cover member 15, 16 covers a part of the yoke lever 14 projecting outward in the longitudinal direction from the main lever 13 and the following end 17 x of the blade rubber 17, and the base of each movable cover member 15, 16 is covered. The end portions are pivotally supported by the rotation shaft portions 15 a and 16 a parallel to the width direction of the wiper blade 12. And the holding claws 15b and 16b (holding part) which make a pair in the width direction are formed in the position inside a longitudinal direction a little from the front-end | tip part of the movable cover members 15 and 16, respectively.

  As shown in FIGS. 5 and 6, the lower ends of the holding claws 15 b and 16 b are bent so as to protrude inward in the width direction and are inserted into the holding grooves 17 a of the blade rubber 17. Accordingly, the holding claws 15b and 16b are locked in the height direction of the blade rubber 17 with respect to the holding groove 17a. By holding the holding claws 15b, 16b and the holding groove 17a in the height direction, it is movable as the end portion (following end portion 17x) of the blade rubber 17 is deformed in the height direction due to the curved shape of the wiping surface G. The cover members 15 and 16 are configured to rotate. Further, the movable cover members 15 and 16 and the blade rubber 17 are configured not to be separated in the height direction by the locking of the holding claws 15b and 16b and the holding groove 17a in the height direction.

  As shown in FIG. 5, a pair of contact walls 22 that contact the upper surface of the longitudinal end portion of the blade rubber 17 are provided on the back side of the distal ends of the movable cover members 15 and 16. 16 extends downward from the upper inner surface. The abutting wall 22 abuts the end portion of the blade rubber 17 in the height direction, and the end portion of the abutting wall 22 enters the movable cover members 15 and 16 due to the bending of the end portion of the blade rubber 17 in the height direction. There are no restrictions.

  The blade rubber 17 is attached to each of the movable cover members 15 and 16 and the main lever 13 so as to be inserted along the longitudinal direction from the distal end portion 17c (see FIGS. 1 and 2A). Specifically, the distal end portion 17c of the blade rubber 17 is sequentially inserted into the holding claws 15b of the movable cover member 15 on the proximal end side, the gripping portions 14a of the yoke lever 14, and the holding claws 16b of the movable cover member 16 on the distal end side. Thus, the holding claws 15b and 16b and the gripping portions 14a are inserted through the holding grooves 17a.

  Here, as shown in FIG. 6, a base end portion 17d, which is an end portion on the rear side in the mounting direction of the blade rubber 17, is engaged as a locking portion protruding outward in the width direction from the bottom portion 17e of each holding groove 17a. A stop projection 23 is formed. The protruding amount of the locking projection 23 in the width direction is formed smaller than the depth of the holding groove 17a, and the holding claw of the movable cover member 15 on the base end side is formed on the front side in the mounting direction of the locking projection 23. An inclined surface 23a for facilitating the ride on the locking projection 23 of 15b is formed.

  Further, in the base end portion 17d of the blade rubber 17, as a locking portion that protrudes outward in the width direction from each holding groove 17a and closes the holding groove 17a further to the rear side in the mounting direction than the locking protrusion 23. A stopper portion 24 is formed. The stopper portion 24 is formed so that the amount of protrusion in the width direction is larger than the amount of protrusion of the locking protrusion 23 and protrudes outward in the width direction of the holding groove 17a. The base end portion 17 d of the blade rubber 17 in which the stopper portion 24 is formed has a shape that swells on both sides in the width direction with respect to other portions of the blade rubber 17.

  When the blade rubber 17 is inserted in the mounting direction, the holding claw 15b of the movable cover member 15 on the base end side climbs over the locking projection 23 by coming into contact with the inclined surface 23a, and the locking projection It arrange | positions in the recessed part between 23 and the stopper part 24. FIG. The holding claw 15 b is locked in the longitudinal direction of the blade rubber 17 with respect to the locking convex portion 23 and the stopper portion 24. As a result, the blade rubber 17 is prevented from slipping out toward the distal end portion 17c (attachment direction) by the stopper portion 24, and the blade rubber 17 is prevented from slipping out from the base end portion 17d side (counter mounting direction) by the locking projection 23.

  Here, the stopper portion 24 can be formed with a large amount of protrusion in the width direction, and is sufficient to prevent the blade rubber 17 from coming off in the mounting direction. When the protrusion amount of the retaining rubber 15 is increased, it becomes difficult to get over the holding claw 15b. Therefore, in consideration of the ease of mounting the blade rubber 17, the protrusion amount of the locking projection 23 must be reduced. For this reason, if an excessive force in the anti-attachment direction is applied to the blade rubber 17, there is a possibility that the locking state between the holding claw 15 b and the locking projection 23 is released.

  Therefore, in the wiper blade 12 of the present embodiment, a resin cap 18 for preventing the blade rubber 17 from coming off in the anti-attachment direction is attached to the distal end portion of the movable cover member 15 on the proximal end side. .

  As shown in FIGS. 2B, 3, and 4, the movable cover member 15 has a tapered shape in which the upper portion is gently curved so that the height dimension becomes smaller toward the distal end. An upper covering portion 31 that covers the upper portion of the distal end portion of the movable cover member 15 is formed on the cap 18 attached to the portion. The upper covering portion 31 is formed following the shape of the fin portion F2 at the distal end portion of the movable cover member 15.

  Further, the cap 18 includes a side covering portion 32 extending downward (from the lip portion 17b side) from both ends in the width direction of the upper covering portion 31, and a lower portion (from the lip portion 17b side) from the tip portion of the upper covering portion 31. ) That extend to (). The side covering portion 32 and the restricting portion 33 are integrally formed so as to surround the upper portion of the base end portion 17d of the blade rubber 17.

  As shown in FIG. 6, each side covering portion 32 is formed with a hook portion 32a that is bent inward in the width direction, and the hook portion 32a is locked to the inner end surface 15c in the longitudinal direction of the holding claw 15b. ing. As shown in FIGS. 2B and 3, the inner end surface 15 c of the holding claw 15 b has a shape extending from the movable cover member 15 while being gently inclined. Thus, the hook portion 32a of the cap 18 is in contact with the inner end surface 15c of the holding claw 15b so that the cap 18 does not come off upward and in the longitudinal direction. Further, the upper covering portion 31 is in contact with the upper portion of the movable cover member 15, thereby preventing the cap 18 from coming off downward.

  The inner surface of the restricting portion 33 of the cap 18 is in contact with the upper portion of the base end portion 17d of the blade rubber 17 in the longitudinal direction. That is, since the restricting portion 33 is locked to the blade rubber 17 in the anti-attachment direction, the blade rubber 17 is prevented from coming off in the anti-attachment direction. The restriction portion 33 of the cap 18 is in contact with the upper portion of the blade rubber 17 in the longitudinal direction, and is not in contact with the lower lip portion 17b.

  The cap 18 is extrapolated from the longitudinal direction or the upper side with respect to the distal end portion of the movable cover member 15, and the hook portion 32 a of each side cover portion 32 is attached to the inner end surface 15 c of each holding claw 15 b of the movable cover member 15. It can be installed by locking. On the other hand, the cap 18 can be removed by spreading each side covering portion 32 in the width direction and removing the hook portion 32a from the inner end surface 15c of the holding claw 15b, and the cap 18 can be easily attached and detached. .

Next, the operation of this embodiment will be described.
In the present embodiment, the force applied to the blade rubber 17 toward the base end portion 17d in the longitudinal direction (counter mounting direction) is received by both the holding claw 15b of the movable cover member 15 and the regulating portion 33 of the cap 18. It is configured. As a result, even if the blade rubber 17 is rotationally driven while the blade rubber 17 is stuck to the wiping surface G due to freezing, and the blade rubber 17 is subjected to excessive force in the anti-attachment direction, the holding claw The force applied to each of 15b and the restricting portion 33 is reduced. For this reason, it is prevented that the engagement state of the engagement projection 23 of the blade rubber 17 and the holding claw 15b is released, and as a result, the blade rubber 17 is more securely prevented from coming off in the anti-attachment direction. .

  Since the cap 18 can be retrofitted to the movable cover member 15 of the existing wiper blade 12, it is necessary to firmly remove the blade rubber 17 when used in a cold region where freezing is likely to occur. Can be dealt with by simply attaching the cap 18 to the existing wiper blade 12. Further, since the cap 18 can be attached to and detached from the movable cover member 15, the blade rubber 17 can be replaced with the cap 18 removed. For this reason, when the blade rubber 17 is replaced, the cap 18 does not hinder the extraction of the blade rubber 17 from the wiper blade 12, and the replacement of the blade rubber 17 is facilitated.

  In this way, it is possible to more firmly prevent the blade rubber 17 from coming off without impairing the versatility of the movable cover member 15 and the assembling / exchange workability of the blade rubber 17.

Next, characteristic effects of the present embodiment will be described.
(1) The movable cover member 15 rotatably connected to the yoke lever 14 is formed with holding claws 15b that are locked to the blade rubber 17 in the longitudinal direction and the height direction. A cap 18 that can be locked in the longitudinal direction with respect to the blade rubber 17 is detachably provided at the tip of the movable cover member 15. For this reason, even when the wiper 10 is driven in a state where the blade rubber 17 is stuck to the wiping surface G due to freezing, and the excessive force in the longitudinal direction is applied to the blade rubber 17, the movable cover member 15 It is possible to more firmly prevent the blade rubber 17 from coming out of the wiper blade 12 with both the holding claw 15b and the cap 18. And, since the cap 18 can be retrofitted to the movable cover member 15 of the existing wiper blade 12, when the blade rubber 17 is required to be firmly removed, such as when used in a cold region where freezing is likely to occur. In addition, it is possible to cope with the existing wiper blade 12 simply by attaching the cap 18.

  Further, since the cap 18 can be attached to and detached from the movable cover member 15, the blade rubber 17 can be replaced after the cap 18 is removed. For this reason, when replacing the blade rubber 17, the cap 18 does not hinder the extraction of the blade rubber 17 from the wiper blade 12, and the blade rubber 17 can be easily replaced.

As described above, it is possible to more firmly prevent the blade rubber 17 from coming off without impairing the versatility of the movable cover member 15 and the assembling / replacement workability of the blade rubber 17.
(2) The blade rubber 17 is attached to the holding claws 15 b and 16 b of the movable cover members 15 and 16 and the holding portions 14 a of the yoke lever 14 along the longitudinal direction thereof, and is attached to the movable cover member 15. The cap 18 is locked to the blade rubber 17 in the anti-attachment direction. That is, since the cap 18 is locked in the anti-attaching direction that is more easily removed from the blade rubber 17, the removal of the blade rubber 17 can be more effectively suppressed.

  (3) The cap 18 is locked to the base end portion 17 d (longitudinal end portion) of the blade rubber 17. Thereby, since it is not necessary to change the shape of the blade rubber 17 so as to be configured to be locked to the cap 18, the existing blade rubber 17 can be used as it is. Therefore, it is possible to prevent the blade rubber 17 from coming off without impairing the versatility of the blade rubber 17.

  (4) Since the cap 18 is locked to the holding claw 15 b of the movable cover member 15, it is not necessary to add a configuration for fixing the cap 18 to the movable cover member 15. The cap 18 can be attached without impairing the performance.

  (5) The movable cover member 15 has a shape extending along the longitudinal direction of the blade rubber 17, and the cap 18 is attached to the distal end portion of the movable cover member 15 that covers the base end portion 17 d of the blade rubber 17. . Thereby, since the cap 18 is disposed at the longitudinal end portion of the wiper blade 12, it is possible to suppress the influence of the cap 18 on the appearance design of the wiper blade 12. Therefore, the cap 18 can be configured without deteriorating the design of the wiper blade 12.

  (6) Since the cap 18 includes the upper covering portion 31 that covers the upper portion of the distal end portion of the movable cover member 15, a sense of unity between the movable cover member 15 and the cap 18 is increased, and the cap 18 is stably fixed. It becomes possible.

  (7) The holding claw 15b of the movable cover member 15 on one side (base end side) is locked in the longitudinal direction by the locking convex portion 23 and the stopper portion 24 of the blade rubber 17, whereby the longitudinal direction of the blade rubber 17 is reached. The escape to the is prevented. Further, since the cap 18 is further attached to the movable cover member 15 on the base end side from which the blade rubber 17 is prevented from coming out, the work can be efficiently performed when the cap 18 is attached or the blade rubber 17 is replaced. The cap 18 can be attached while confirming the locking state of the locking projections 23 and the stoppers 24 with 15b.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The wiper blade 12 of the present embodiment is different from the first embodiment in the configuration of the retaining member (the cap 18 in the first embodiment). Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The retaining member 41 of the present embodiment is attached to the distal end portion of the movable cover member 15 on the proximal end side, similarly to the cap 18 of the first embodiment. The retaining member 41 covers the longitudinal side of the base end portion 17d of the blade rubber 17, and extends in the longitudinal direction of the blade rubber 17 from the regulation portion 42 to cover both sides of the base end portion 17d in the width direction. A pair of side cover portions 43. Each of the restriction portion 42 and the side portion covering portion 43 has substantially the same configuration as the restriction portion 33 and the side portion covering portion 32 of the first embodiment, and the restriction portion 42 and the pair of side portion covering portions 43 are flat. It is connected so as to form a substantially U shape in view. In addition, each side cover portion 43 is formed with a hook portion 43 a that is locked to the inner end surface 15 c of the holding claw 15 b of the movable cover member 15.

  The retaining member 41 of the present embodiment does not include the upper covering portion 31 like the cap 18 of the first embodiment, and the upper surface of the distal end portion of the movable cover member 15 is exposed even when the retaining member 41 is mounted. It has a configuration. The restricting portion 42 and each side portion covering portion 43 of the retaining member 41 are disposed below the outer edge of the distal end portion of the movable cover member 15. The restricting portion 42 and each side covering portion 43 are shaped to follow the outer edge shape of the tip portion of the movable cover member 15, so that the retaining member 41 does not protrude from the movable cover member 15 in plan view. Yes.

  Further, as shown in FIG. 9, the retaining member 41 has a plate-like shape extending from the upper end portion of the restricting portion 42 in the longitudinal direction of the blade rubber 17 (the same direction as the extending direction of the side covering portion 43). An insertion portion 44 is formed. The insertion portion 44 is inserted between the abutting wall 22 of the movable cover member 15 and the upper surface 17f of the blade rubber 17 so that the retaining member 41 does not rotate around the hook portion 43a. ing. In addition, the upper surface of the insertion portion 44 is inclined so that the plate thickness is thinner toward the distal end side, and the insertion portion 44 is easily inserted between the contact wall 22 and the upper surface 17 f of the blade rubber 17.

  Also in the present embodiment, substantially the same operational effects as in the first embodiment can be obtained. That is, the holding claw 15b is received by the holding claw 15b of the movable cover member 15 and the restricting portion 42 of the retaining member 41 so that the force applied to the blade rubber 17 toward the base end portion 17d in the longitudinal direction (counter mounting direction) is received. And the locking projection 23 are prevented from being released, and as a result, the blade rubber 17 is more securely prevented from coming off in the anti-attachment direction.

(Third embodiment)
A third embodiment embodying the present invention will be described below with reference to FIGS. The wiper blade 12 of the present embodiment is different from the first embodiment in the configuration of the retaining member (the cap 18 in the first embodiment). Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The retaining member 51 of the present embodiment is formed with a restricting portion 52 that abuts the proximal end portion 17d of the blade rubber 17 in the longitudinal direction. The restricting portion 52 has a shape that follows the shape of the end surface in the longitudinal direction of the base end portion 17 d of the blade rubber 17. The restricting portion 52 is disposed at the lower end of the movable cover member 15 so that the retaining member 51 does not protrude from the movable cover member 15 in a plan view.

  As shown in FIG. 14, the retaining member 51 includes an extending portion 53 that linearly extends inward in the longitudinal direction from the center in the width direction at the upper end of the restricting portion 52, and both ends in the width direction from the distal end portion of the extending portion 53. An extending locking portion 54 is formed in a substantially T shape. As shown in FIG. 15, the extension portion 53 is inserted between the pair of contact walls 22 arranged in parallel in the width direction on the back side of the movable cover member 15, and the tip of the extension portion 53 is engaged. The stop portions 54 are respectively engaged with the longitudinal end portion 22a of the contact wall 22. As described above, the extension portion 53 is inserted between the pair of contact walls 22, thereby preventing the retaining member 51 from shifting in the width direction, and the locking portion 54 is the length of the contact wall 22. By being locked to the direction end 22a, the retaining member 51 is fixed so as not to come off in the longitudinal direction.

  When the retaining member 51 is mounted, the locking portion 54 is inserted between the abutting wall 22 and the upper surface 17f of the blade rubber 17 and is locked to the longitudinal end portion 22a of the abutting wall 22. The extending portion 53 is disposed between the contact walls 22. Further, the upper surface of each locking portion 54 is inclined so that the thickness becomes thinner toward the tip side, and the locking portion 54 can be easily inserted between the contact wall 22 and the upper surface 17 f of the blade rubber 17. .

  Also in the present embodiment, substantially the same operational effects as in the first embodiment can be obtained. That is, since the force applied to the blade rubber 17 toward the base end portion 17d in the longitudinal direction (counter mounting direction) is received by both the holding claw 15b of the movable cover member 15 and the regulating portion 52 of the retaining member 51, the holding claw 15b. And the locking projection 23 are prevented from being released, and as a result, the blade rubber 17 is more securely prevented from coming off in the anti-attachment direction.

  In addition, in the present embodiment, the extension portion 53 and the locking portion 54 of the retaining member 51 are hidden inside the movable cover member 15 and only the restricting portion 52 appears on the table. The influence on the appearance design of the wiper blade 12 can be further suppressed.

  In this embodiment, since the contact wall 22 for suppressing the lifting of the base end portion 17d of the blade rubber 17 is also used for fixing the retaining member 51, the structure for fixing the retaining member 51 is movable. There is no need to add to the cover member 15, and as a result, the retaining member 51 can be mounted without impairing the versatility of the movable cover member 15.

Each embodiment of the present invention may be modified as follows.
In each of the above-described embodiments, the retaining member (cap 18 and retaining members 41 and 51) is the distal end of the movable cover member 15 on the proximal end side where the locking convex portion 23 and the stopper portion 24 as the locking portions are provided. However, for example, a retaining member may be attached to the distal end portions of the movable cover members 15 and 16 on the proximal end side and the distal end side. According to this configuration, the appearance balance of the wiper blade 12 is good, and the design can be improved.

  Alternatively, the movable cover member 15 on the proximal end side may be attached only to the movable cover member 16 on the distal end side without providing a retaining member. In the case of this configuration, the retaining member suppresses the blade rubber 17 from coming off in the mounting direction.

  Further, the retaining member can be attached to the longitudinal intermediate portion instead of the distal end portion of the movable cover member 15, and the retaining member is engaged with the side surface in the width direction of the blade rubber 17 so that the blade rubber 17 extends in the longitudinal direction. You may prevent it from coming off.

  In each of the above-described embodiments, the main lever 13 and the yoke lever 14 constitute a rubber holder, and the movable cover members 15 and 16 are connected to the yoke lever 14. However, the present invention is not particularly limited to this configuration.

  For example, a rubber holder may be configured by a lever assembly in which a plurality of metal levers are connected in a tournament shape, and the movable cover members 15 and 16 may be connected to any of the metal levers. In the case of this configuration, it is desirable to provide a center cover that covers a portion between the movable cover members 15 and 16 in the lever assembly.

  Further, for example, the yoke lever 14 is omitted from each of the above embodiments, and a grip portion for gripping the blade rubber 17 is provided on the main lever 13, and the main lever 13 directly holds the blade rubber 17, and each movable cover member 15, 16 may be connected to the main lever 13.

  In each of the above embodiments, the present invention is applied to the wiper blade 12 that wipes the windshield of the vehicle. However, for example, the present invention may be applied to a wiper blade that wipes the rear glass of the vehicle.

  DESCRIPTION OF SYMBOLS 11 ... Wiper arm, 12 ... Wiper blade, 13 ... Main lever which comprises rubber holder, 14 ... Yoke lever which comprises rubber holder, 15, 16 ... Movable cover member (cover member), 15b, 16b ... Holding claw (holding part) ), 17 ... Blade rubber, 17d ... Base end portion (longitudinal end portion) of the blade rubber, 17x ... Follow-up end portion, 18 ... Cap as a retaining member, 23 ... Locking convex portion (locking portion), 24 ... Stopper portion (locking portion), 41, 51... Retaining member, G.

Claims (6)

Blade rubber to wipe the surface of the wiping surface;
A rubber holder that holds the blade rubber and distributes the pressing force from the wiper arm in the longitudinal direction of the blade rubber;
Covers the end of the blade rubber protruding from the longitudinal end of the rubber holder, and has a holding portion for holding the end of the blade rubber at one end, and the other end is rotatably connected to the rubber holder. A wiper blade provided with a covered cover member,
The holding part of the cover member is locked in the longitudinal direction with the blade rubber,
The wiper blade according to claim 1, wherein a retaining member that can be locked in the longitudinal direction with respect to the blade rubber is detachably provided on the cover member. The wiper blade according to claim 1,
The blade rubber is attached to the rubber holder along its longitudinal direction,
The wiper blade according to claim 1, wherein the retaining member is locked to the blade rubber in a direction opposite to the blade rubber. The wiper blade according to claim 1 or 2,
The wiper blade, wherein the retaining member is locked to a longitudinal end portion of the blade rubber. The wiper blade according to any one of claims 1 to 3,
The wiper blade, wherein the retaining member is locked to the holding portion of the cover member. In the wiper blade according to any one of claims 1 to 4,
The cover member has a shape extending along the longitudinal direction of the blade rubber,
The wiper blade according to claim 1, wherein the retaining member is attached to a front end portion of the cover member that covers a longitudinal end portion of the blade rubber. In the wiper blade according to any one of claims 1 to 5,
The blade rubber has a following end that protrudes outward from both longitudinal ends of the rubber holder and follows the curved surface shape of the wiping surface;
A pair of the cover members are provided so as to cover the following end portions of the blade rubber, and the holding portions of the cover members are configured to hold the longitudinal end portions of the blade rubber,
The holding portion of one of the cover members is locked in a longitudinal direction to a locking portion provided at one end portion in the longitudinal direction of the blade rubber, and the retaining member is attached to the one cover member. A wiper blade characterized by that.