JP4967703B2 - Winter wiper blade - Google Patents

Description

  The present invention relates to a wiper blade used in a wiper device, and more particularly to a winter wiper blade adapted for use in a cold region or winter.

  For example, a wiper device mounted on an automobile or the like transmits a rotational force of a motor to a wiper arm via a link, and the wiper arm presses a wiper blade connected to the wiper blade against a glass surface of an automobile windshield or the like. The glass surface is wiped off by reciprocating rotation.

  The wiper blade has a structure in which a blade rubber that contacts and wipes a glass surface is held by a holding lever mechanism connected to a wiper arm. The holding lever mechanism has a structure in which a plurality of lever members such as a primary lever, a secondary lever, and a yoke are connected and combined with rivets, etc., and a rubber blade rubber is used in three dimensions such as the windshield of an automobile. It is held displaceably corresponding to the curved glass surface. Further, a vertebra is interposed between the holding lever mechanism and the blade rubber. The vertebra is for dispersing the force acting on the blade rubber from the holding lever mechanism so as not to concentrate on the holding position but to be uniform over the entire length of the blade rubber. The blade rubber is held by the holding lever mechanism via the vertebra by fitting a part (head) of the blade rubber to the vertebra.

  When the wiper device is used in a cold region or in winter, if a droplet of water adheres to the holding lever mechanism of the wiper blade, it freezes, and the movement of the holding lever mechanism may be hindered to prevent proper wiping. Therefore, as a wiper blade suitable for use in cold districts and winter seasons, the retaining lever mechanism excluding the blade rubber and the entire circumference of the vertebra are covered with a cylindrical cover and stoppers attached to both ends of the cover, and water droplets adhere to it. What is not done is known. Such a cold region type wiper blade is called a winter wiper blade.

By the way, in the winter wiper blade as described above, the stoppers attached to both ends of the cylindrical cover are generally detached from the cover by being bonded to both ends of the cover using an adhesive. It has a structure that prevents water from entering inside. However, the part of the cylindrical cover that comes into contact with the vertebra is a complicated shape that follows the shape of the vertebra with which a part of the blade rubber is fitted. It is difficult to do so, and it is difficult to completely block the ingress of water into the cover. For this reason, various devices for ensuring watertightness between the stopper and the cover have been studied. For example, in Patent Document 1, an adapter is provided between the cover (blade cover) and the stopper (end cover). It has been proposed that the adapter is attached to the cover all around and the adapter and the stopper are engaged by a hook.
Japanese Utility Model Publication No. 1-112158

  However, as described in Patent Document 1, when an adapter is provided between the cover and the stopper and the adapter is attached to the cover all around, the cover has a complicated shape. It is difficult to bond, and a gap may be formed between the adapter and the cover at this portion. Even if the adapter is bonded to the cover all around, the bonded portion may be peeled off due to repeated use, and a gap may be formed. Then, there is a problem that water enters the inside of the cover from this gap and causes the holding lever mechanism to rust, or water freezes inside the cover and hinders the movement of the holding lever mechanism.

  The inventor of the present invention examines a solution of such water intrusion into the cover, and is formed between the end of the portion fitted to the blade rubber vertebra and the stopper. It has been found that water accumulates in the gap, and the water accumulated in the gap has a strong tendency to gradually enter the inside of the cover through the gap between the stopper and the cover. In other words, since the blade rubber needs to be able to bend and stretch following the curved glass surface, it is usually formed slightly shorter than the vertebra and the cover, and the end of the portion fitted to the vertebra is It arrange | positions so that it may become the position spaced apart from the stopper, and this edge part and stopper may not interfere at the time of expansion | extension. For this reason, a void recessed inward is formed between the end of the portion fitted to the vertebra of the blade rubber and the stopper, and water tends to accumulate in the void. It has been found that water accumulated in the gap gradually enters the cover through the gap between the stopper and the cover.

  Therefore, in order to fundamentally eliminate the intrusion of water into the cover, it is possible to prevent water from collecting in the gap between the end portion of the blade rubber fitted to the vertebra and the stopper. It is considered to be an extremely important factor.

  The present invention was devised in view of the conventional situation as described above, and effectively suppresses the intrusion of water into the cover, and malfunctions due to rust and freezing of the holding lever mechanism inside the cover. An object of the present invention is to provide a winter wiper blade capable of avoiding problems.

According to the first aspect of the present invention, the blade rubber for wiping the glass surface is held by the holding lever mechanism by fitting a part of the blade rubber to a vertebra attached to the holding lever mechanism, and the holding lever mechanism In the winter wiper blade in which the entire circumference of the vertebra is covered with a cylindrical cover and stoppers attached to both ends of the cover, the end of the portion fitted to the vertebra of the blade rubber and the stopper The gap to be formed is shielded by the gap shielding means, and the end of the gap shielding means is slidably disposed outside the stopper.

  The invention according to claim 2 is the winter wiper blade according to claim 1, wherein the gap shielding means includes a plate-like member mounted at a position for shielding the gap.

  According to a third aspect of the present invention, in the winter wiper blade according to the first aspect, a plate-like member arranged so as to shield the gap is integrally formed on the blade rubber, and the plate-like member is This is a gap shielding means.

  According to a fourth aspect of the present invention, in the winter wiper blade according to the first aspect, a protrusion is formed integrally with the stopper so as to shield the gap, and the protrusion is used as the gap shielding means. It is.

  According to a fifth aspect of the present invention, in the winter wiper blade according to the first aspect, an end portion of the blade rubber other than a portion fitted to the vertebra is extended to the stopper side, and the blade rubber The portion extending to the stopper side is used as the gap shielding means.

  According to the winter wiper blade of the present invention, the gap formed between the end of the portion fitted to the blade rubber's vertebra and the stopper is shielded by the gap shielding means. Accumulation is effectively prevented. Therefore, the penetration of water into the cover can be effectively suppressed, and problems such as malfunction due to rusting and freezing of the holding lever mechanism inside the cover can be avoided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
1 to 6 are views showing the winter wiper blade of the first embodiment, FIG. 1 is a perspective view of the winter wiper blade 1 of the present embodiment, and FIG. 2 is a partially broken view of the cover 4 of the winter wiper blade 1. 3 is a cross-sectional view taken along the line AA in FIG. 2, FIG. 4 is an enlarged perspective view of the end portion of the winter wiper blade 1 viewed from the direction of arrow B in FIG. 1, and FIG. FIG. 6 is an exploded perspective view of the end portion of the winter wiper blade 1, and FIG. 6 is a longitudinal sectional view of the end portion of the winter wiper blade 1 shown in FIG.

  The winter wiper blade 1 of the present embodiment is a wiper blade used in a wiper device for a windshield of an automobile. The winter wiper blade 1 is attached to a blade rubber 2 that contacts and wipes the glass surface of the windshield of the automobile, a holding lever mechanism LM that holds the blade rubber 2, and a holding lever mechanism LM. In addition, a part of the blade rubber 2 is fitted and a vertical bar 3 interposed between the blade rubber 2 and the holding lever mechanism LM, a cylindrical cover 4 covering the holding lever mechanism LM and the vertical bar 3, and a cylinder A stopper 5 that is mounted so as to close both ends of the cover 4, and a plate that is mounted at a position that blocks the gap between the stopper 5 and the end portion of the blade rubber 2 that is fitted to the vertical bra 3. And a holder 6 having a shape.

  The blade rubber 2 is a rubber part formed in a long shape having a predetermined length. As shown in FIG. 3, the blade rubber 2 includes a barrel portion 21 having a substantially triangular cross section in which a lip portion 21 a that contacts the glass surface is formed at the tip, and a rectangular cross section formed on the upper side of the barrel portion 21. The head portion 22 and the neck portion 23 that integrally connects the trunk portion 21 and the head portion 22 are formed into a shape. The blade rubber 2 is held by the holding lever mechanism LM via the vertical bar 3 by fitting the head 22 to the vertical bar 3 attached to the holding lever mechanism LM.

  The blade rubber 2 is formed slightly shorter than the vertebra 3 and the cover 4 so as to be able to bend and extend following the curved glass surface of the windshield of the automobile. The end portions 22 are arranged so as to be spaced from the stoppers 5 attached to both ends of the cover 4 so that the end portions and the stoppers 5 do not interfere with each other when extended.

  As shown in FIG. 2, the holding lever mechanism LM is a structure in which a primary lever 7, a secondary lever 8, and a yoke (tertiary lever) 9 are combined step by step in a tournament shape. It is held so that it can be deformed corresponding to the glass surface of the front window glass that is curved in three dimensions.

  The primary lever 7 is formed by bending a thin steel plate, for example, and is formed into an arch-like outer shape as a whole, and is bent downward from both the top plate portion and the widthwise ends of the top plate portion. It is formed in a substantially U-shaped cross-sectional shape having a pair of side walls. A clip mechanism 10 is attached to the upper side of the central portion in the longitudinal direction of the primary lever 7 via a waterproof cover 4 that is mounted so as to cover the holding lever mechanism LM. The primary lever 7 is connected to the tip of a wiper arm 11 for reciprocatingly rotating the winter wiper blade 1 by the clip mechanism 10. Moreover, the center part of the secondary lever 8 is attached to the longitudinal direction both ends of the primary lever 7 so that rotation is possible by the rivet 7p, respectively.

  Similar to the primary lever 7, the secondary lever 8 is formed by bending a thin steel plate, for example, and is formed into an arch-like outer shape as a whole, and has a substantially rectangular shape having a top plate portion and a pair of side wall portions. It is formed into a letter-shaped cross-sectional shape. At the both ends in the longitudinal direction of the secondary lever 8, the central part of the yoke 9 is rotatably attached by a rivet 8p.

  The yoke 9 is formed by bending, for example, a thin steel plate, like the primary lever 7 and the secondary lever 8, and is formed into an arch-shaped outer shape as a whole, and has a top plate portion and a pair of side wall portions. It has a substantially U-shaped cross-sectional shape. Holding yokes 91 are provided at both longitudinal ends of the yoke 9, and the blade rubber 2 is held by the holding claws 91 via the vertebra 3. The holding claws 91 are formed by bending the lower ends of the pair of side wall portions of the yoke 9 inwardly at substantially right angles.

  The vertebra 3 is for dispersing the force acting on the blade rubber 2 from the holding lever mechanism LM so as to be uniform over the entire length of the blade rubber 2 without concentrating on the position of the holding claw 91 of the yoke 9. It is a metal part or a resin part having a predetermined hardness formed in a long shape. As shown in FIG. 3, the vertical bra 3 has a pair of left and right engaging protrusions 31 that engage with the holding claws 91 of the yoke 9 on the upper end side, and a claw portion 32 that engages with the neck portion 23 of the blade rubber 2 on the lower end side. These are formed into a cross-sectional shape having a groove 33 into which the head 22 of the blade rubber 2 is fitted. The vertical bra 3 is attached to the holding lever mechanism LM by engaging the pair of engaging protrusions 31 with the holding claws 91 of the yoke 9. Further, the vertical bra 3 is engaged with the head portion 22 of the blade rubber 2 by engaging the claw portion 32 with the neck portion 23 of the blade rubber 2 and accommodating the head portion 22 of the blade rubber 2 in the groove portion 33. In the state, it is interposed between the blade rubber 2 and the holding lever mechanism LM.

  The cover 4 covers the holding lever mechanism LM to which the vertebra 3 is attached to ensure watertightness. As shown in FIGS. 1 and 2, for example, a rubber material has a size corresponding to the holding lever mechanism LM. This is a part formed into a cylindrical shape. The cover 4 is provided with a bag-like recess at a portion sandwiched between the vertebra 3 and the blade rubber 2 when mounted so as to cover the holding lever mechanism LM and the vertebra 3. When the cover 4 is attached, the bag-like recess is pushed into the groove 33 of the vertebra 3, and the head 22 of the blade rubber 2 is fitted into the groove 33 of the vertebra 3 through the recess of the cover 4.

  The stopper 5 closes both ends of the cylindrical cover 4 that covers the holding lever mechanism LM and the vertebra 3 and secures water tightness at both ends of the cover 4, as shown in FIGS. 4 and 5. In addition, for example, the resin material is a part formed by forming a cap shape corresponding to the inner peripheral shape of the cover 4. The stoppers 5 are attached to both ends of the cover 4 so that the outer peripheral wall surface is in close contact with the inner peripheral surface of the cover 4, and are joined to the cover 4 with an adhesive or the like.

  The holder 6 shields the gap G formed between the end of the head portion 22 of the blade rubber 2 fitted in the groove 33 of the vertebra 3 and the stopper 5, and water does not accumulate in the gap G. For example, a resin material is formed into a plate shape. As described above, the head portion 22 of the blade rubber 2 has a position where its end is slightly separated from the stopper 5 in order to prevent the extension of the blade rubber 2 from interfering with the stopper 5 when the blade rubber 2 is extended. It fits in the groove part 33 of the vertebra 3. For this reason, as shown in FIG. 6, a gap G is formed between the end of the head portion 22 of the blade rubber 2 and the stopper 5, and when water accumulates in the gap G, water enters the cover 4. It becomes a factor. Therefore, in the winter wiper blade 1 of the present embodiment, the gap G is shielded by the holder 6 so that water does not accumulate in the gap G, thereby preventing water from entering the cover 4. I am doing so.

  The holder 6 has a structure in which, for example, an engagement protrusion 62 having the same shape as the head portion 22 of the blade rubber 2 is integrally formed on a main body portion 61 formed in a plate shape. Is fitted between the blade rubber 2 and the stopper 5 so that the gap G is shielded by the plate-like main body portion 61. Here, the holder 6 is mounted so that the end of the engaging protrusion 62 is located away from the end surface of the stopper 5, and the plate-like main body portion 61 protrudes outward from the stopper 5 when the blade rubber 2 is extended. Slide to let it go. Therefore, the extension of the blade rubber 2 is not hindered by the attachment of the holder 6, and the blade rubber 2 can be deformed following the curved glass surface. The holder 6 may be mounted in various structures other than the above-described engagement protrusion 62 such as a ring-shaped band so as to surround the outer periphery of the cover 4.

  Here, an example of the assembly process of the winter wiper blade 1 of the present embodiment configured as described above will be described.

  First, the primary lever 7, the secondary lever 8, and the yoke 9 are connected by rivets 7p, 8p to assemble the holding lever mechanism LM.

  Next, the engaging projection 31 of the vertebra 3 is engaged with the holding claw 91 of the yoke 9 of the holding lever mechanism LM, and the vertebra 3 is attached to the holding lever mechanism LM.

  Next, one end side of the cover 4 is spread using a tool, and the holding lever mechanism LM to which the vertebra 3 is attached is pushed from one end side and inserted into the cover 4. When the holding lever mechanism LM to which the vertebra 3 is attached is completely inserted into the cover 4, the bag-like recess of the cover 4 is pushed into the groove 33 of the vertebra 3 using a tool.

  Next, the blade rubber 2 is slid in the horizontal direction, and the head portion 22 of the blade rubber 2 is inserted into the groove portion 33 of the vertebra 3 in which the concave portion of the cover 4 has been pushed. The blade rubber 2 is attached by engaging the neck 23 of the rubber 2. Further, the engaging protrusions 62 of the holder 6 are inserted into the groove portions 33 of the vertebra 3, and the holders 6 are attached to both ends of the blade rubber 2.

  Next, stoppers 10 are attached to both ends of the cover 4. Finally, the clip mechanism 8 is attached to the primary lever 5 of the holding lever mechanism LM covered with the cover 4 using screws or the like, and the assembly of the winter wiper blade 1 of the present embodiment is completed.

  The winter wiper blade 1 assembled as described above is connected to the tip of the wiper arm 11 by the clip mechanism 10. The wiper arm 11 reciprocally rotates the windshield wiper blade 1 in a state of being pressed against the glass surface of the front window glass by transmitting the rotational force of a wiper motor (not shown) via the link. As a result, the winter wiper blade 1 is deformed by the holding lever mechanism LM so that the blade rubber 2 is deformed corresponding to the glass surface of the front window glass that is curved in three dimensions, and the blade rubber 2 is tilted to the optimum tilt angle. The glass surface is wiped by the lip portion 21a that reciprocally rotates on the glass surface while contacting the glass surface.

  At this time, in the winter wiper blade 1 of the present embodiment, the gap G between the end of the head portion 22 of the blade rubber 2 and the stopper 5 is shielded by the holder 6, so that it is collected by wiping the blade rubber 2. Water is scraped to the outside without entering the gap G and does not accumulate in the gap G. Therefore, according to the winter wiper blade 1 of the present embodiment, the water accumulated in the gap G gradually enters the inside of the cover 4, and the operation of the holding lever mechanism LM inside the cover 4 due to rusting or freezing, etc. It is possible to avoid inconvenience such as a factor.

  In addition, when the end portion of the winter wiper blade 1 interferes with the wiper arm 11, vibration can be absorbed by the holder 6, and an effect of reducing interference sound can be obtained.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. 7 to 9 are views showing the winter wiper blade of the second embodiment, FIG. 7 is an enlarged perspective view showing an end portion of the winter wiper blade 100 of the present embodiment, and FIG. 8 is shown in FIG. FIG. 9 is an exploded perspective view of the end portion of the winter wiper blade 100, and FIG. 9 is a longitudinal sectional view of the end portion of the winter wiper blade 100 shown in FIG.

  The winter wiper blade 100 of the present embodiment is different from the first embodiment described above in the means for shielding the gap G between the end of the head portion 22 of the blade rubber 2 and the stopper 5. That is, in the first embodiment, the gap G is shielded by mounting the plate-like holder 6 between the blade rubber 2 and the stopper 5, but in this embodiment, the blade rubber 2 has a plate-like member. 101 is integrally formed, and the gap G is shielded by a plate-like member 101 formed integrally with the blade rubber 2. Other configurations of the winter wiper blade 100 of the present embodiment are the same as those of the first embodiment described above, and thus the description thereof is omitted.

  As shown in FIGS. 7 to 9, the plate-like member 101 is integrally formed with the blade rubber 2 so as to protrude outward from the end portion of the blade rubber 2, and the blade rubber 2 causes the head portion 22 of the vertical rubber 3. The gap G is arranged so as to be shielded when fitted in the groove 33 and mounted at a predetermined position. The blade rubber 2 integrally formed with such a plate-like member 101 is, for example, put a rubber material into a space between a plurality of previously formed molding dies and hold an appropriate crosslinking time while applying pressure. Compression molding (pressure molding) to solidify, or injection molding (injection) to inject a rubber material into the space between multiple molding dies closed under pressure and solidify by holding an appropriate crosslinking time It can be easily produced by molding.

  In the winter wiper blade 100 of the present embodiment, the gap G between the end portion of the head portion 22 of the blade rubber 2 and the stopper 5 is shielded by the plate-like member 101 formed integrally with the blade rubber 2. As in the first embodiment, water is effectively prevented from accumulating in the gap G. Therefore, according to the winter wiper blade 100 of the present embodiment, the water accumulated in the gap G gradually enters the inside of the cover 4, and the malfunction of the holding lever mechanism LM inside the cover 4 due to rusting or freezing. It is possible to avoid inconvenience such as a factor.

  Further, since the plate-like member 101 is integrally formed on the blade rubber 2, the attachment work can be performed while holding the plate-like member 101 when the blade rubber 2 is attached, and the workability is improved. can get.

(Third embodiment)
Next, a third embodiment of the present invention will be described. 10 to 12 are views showing a winter wiper blade according to the third embodiment. FIG. 10 is an enlarged perspective view showing an end portion of the winter wiper blade 200 according to this embodiment, and FIG. 11 is shown in FIG. FIG. 12 is an exploded perspective view of the end portion of the winter wiper blade 200, and FIG. 12 is a longitudinal sectional view of the end portion of the winter wiper blade 200 shown in FIG.

  The winter wiper blade 200 of the present embodiment is different from the first and second embodiments described above in that the means for shielding the gap G between the end of the head portion 22 of the blade rubber 2 and the stopper 5 is shielded. That is, in the first embodiment, the plate-like holder 6 is mounted between the blade rubber 2 and the stopper 5, and in the second embodiment, the plate-like member 101 is integrally formed on the blade rubber 2. In this embodiment, a protrusion 201 protruding toward the blade rubber 2 is formed integrally with the stopper 5, and the protrusion G integrally formed with the stopper 5 blocks the gap G. I am doing so. Since the other structure in the winter wiper blade 200 of this embodiment is the same as that of the 1st, 2nd embodiment mentioned above, description is abbreviate | omitted.

  As shown in FIGS. 10 to 12, the protrusion 201 is a protrusion having a shape corresponding to the neck portion 23 of the blade rubber 2, and is integrally formed with the stopper 5 so as to protrude toward the blade rubber 2. The protrusions 201 are inserted between the pair of claws 32 of the vertebra 3 to shield the gap G when the stopper 5 is attached to both ends of the cover 4. The stopper 5 integrally formed with such a protrusion 201 can be easily manufactured by a general resin molding technique such as injection molding.

  In the winter wiper blade 200 of the present embodiment, the gap G between the end portion of the head portion 22 of the blade rubber 2 and the stopper 5 is shielded by the protrusion 201 formed integrally with the stopper 5. As in the second embodiment, water is effectively prevented from accumulating in the gap G. Therefore, according to the winter wiper blade 200 of the present embodiment, the water accumulated in the gap G gradually enters the inside of the cover 4, and the malfunction of the holding lever mechanism LM inside the cover 4 due to rusting or freezing. It is possible to avoid inconvenience such as a factor.

  Further, since the protrusion 201 is integrally formed with the stopper 5, when the stopper 5 is mounted, the mounting work can be performed using the protrusion 201 as a guide, and the workability can be improved.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. FIGS. 13 to 15 are views showing the winter wiper blade of the fourth embodiment, FIG. 13 is an enlarged front view showing an end portion of the winter wiper blade 300 of this embodiment, and FIG. 14 is shown in FIG. FIG. 15 is an exploded perspective view of the end portion of the winter wiper blade 300, and FIG. 15 is a longitudinal sectional view of the end portion of the winter wiper blade 300 shown in FIG.

  The winter wiper blade 300 of the present embodiment is different from the first to third embodiments described above in that the means for shielding the gap G between the end of the head portion 22 of the blade rubber 2 and the stopper 5 is shielded. That is, in the first embodiment, the plate-like holder 6 is mounted between the blade rubber 2 and the stopper 5, and in the second embodiment, the plate-like member 101 is integrally formed on the blade rubber 2. In the third embodiment, the protrusion 201 is formed integrally with the stopper 5 so as to shield the gap G. However, in this embodiment, the body portion 21 of the blade rubber 2 is extended to the stopper 5 side. The gap G is shielded by a body portion 21 extending to the stopper 5 side of the blade rubber 2. Other configurations of the winter wiper blade 300 of the present embodiment are the same as those of the first to third embodiments described above, and thus the description thereof is omitted.

  The blade rubber 2 in the winter wiper blade 300 of the present embodiment is formed such that the length of the trunk portion 21 is longer than the lengths of the head portion 22 and the neck portion 23, as shown in FIGS. When the head portion 22 is fitted into the groove portion 33 of the vertebra 3 and is mounted at a predetermined position, the end portion of the body portion 21 is positioned near the end surface of the stopper 5 and the space portion 21 shields the gap G. . Since the end portion of the head portion 22 of the blade rubber 2 is located away from the end face of the stopper 5, the head portion 22 and the stopper 5 interfere with each other when the blade rubber 2 is extended, thereby preventing the extension. Instead, the body 21 can be deformed following the curved glass surface so as to protrude outward from the stopper 5.

  In the winter wiper blade 300 of the present embodiment, the body portion 21 of the blade rubber 2 is extended to the stopper 5 side, and the extended portion causes the end portion of the head portion 22 of the blade rubber 2 and the stopper 5 to be connected. Since the gap G in between is shielded, water is effectively prevented from accumulating in the gap G as in the first to third embodiments described above. Therefore, according to the winter wiper blade 300 of the present embodiment, the water accumulated in the gap G gradually enters the inside of the cover 4 to cause malfunctions due to rusting or freezing of the holding lever mechanism LM inside the cover 4. It is possible to avoid inconvenience such as a factor.

  In addition, since the body portion 21 of the blade rubber 2 is extended to the stopper 5 side and no step is formed between the two, snow adheres to the step and the wiping performance, high-speed paying performance, judder performance, and reversing performance are deteriorated. The problem of incurring can be effectively avoided.

  As described above, the winter wiper blades 1, 100, 200, and 300 according to the first to fourth embodiments have been exemplified and described as specific embodiments of the present invention. However, the above-described winter wiper blades 1, 100, and 200 have been described. , 300 merely exemplifies an embodiment of the present invention, and the technical scope of the present invention is not limited to the technical matters disclosed in the description of the above embodiment, and the above disclosed content is not limited. Modifications and application examples that are naturally derived in view of general technical common sense are also included. For example, in each of the embodiments described above, the holding lever mechanism LM is an eight-point support mechanism that supports the blade rubber 2 at eight points via the vertebra 3 by the holding claws 91 at both ends of the four yokes 9. A holding claw is provided at both ends of one primary lever 7 and supported at two points by the two holding claws, or a holding claw is provided at both ends of the two secondary levers 8 and the four holding claws are used. Other support structures such as a four-point support mechanism that supports four points may be used.

  In addition, each of the above-described embodiments is an example applied to a wiper blade used in a wiper device for a front windshield of an automobile. However, a wiper device for a headlamp or other automobile lamp, a door mirror, or other automobile. The present invention can also be effectively applied to wiper blades used in wiper devices for automobile mirrors and other automobile wipers. Furthermore, the present invention can be effectively applied to a wiper blade of a wiper device used other than an automobile.

It is a perspective view of the winter wiper blade of the 1st embodiment of the present invention. FIG. 2 is a partially broken view showing a cover of the winter wiper blade of FIG. 1. It is AA sectional drawing in FIG. FIG. 2 is an enlarged perspective view of an end portion of the winter wiper blade of FIG. 1 as viewed from the direction of arrow B in FIG. 1. FIG. 5 is an exploded perspective view of an end portion of the winter wiper blade shown in FIG. 4. It is a longitudinal cross-sectional view of the edge part of a winter wiper blade shown in FIG. It is a perspective view which expands and shows the edge part of the winter wiper blade of the 2nd Embodiment of this invention. FIG. 8 is an exploded perspective view of an end portion of the winter wiper blade shown in FIG. 7. It is a longitudinal cross-sectional view of the edge part of a winter wiper blade shown in FIG. It is a perspective view which expands and shows the edge part of the winter wiper blade of the 3rd Embodiment of this invention. FIG. 11 is an exploded perspective view of an end portion of the winter wiper blade shown in FIG. 10. It is a longitudinal cross-sectional view of the edge part of a winter wiper blade shown in FIG. It is a front view which expands and shows the edge part of the winter wiper blade of the 4th Embodiment of this invention. FIG. 14 is an exploded perspective view of an end portion of the winter wiper blade shown in FIG. 13. It is a longitudinal cross-sectional view of the edge part of a winter wiper blade shown in FIG.

Explanation of symbols

1 Winter wiper blade (first embodiment)
2 Blade rubber 3 Vertibra 4 Cover 5 Stopper 6 Holder 100 Winter wiper blade (second embodiment)
101 Plate-like member 200 Winter wiper blade (third embodiment)
201 Projection 300 Winter wiper blade (fourth embodiment)
LM Holding lever mechanism G Gap

Claims (5)

A blade rubber for wiping the glass surface is held by the holding lever mechanism by fitting a part of the blade rubber to a vertebra attached to the holding lever mechanism, and the entire circumference of the holding lever mechanism and the vertebra is In the winter wiper blade covered with a cylindrical cover and stoppers attached to both ends of the cover,
A gap formed between an end portion of the blade rubber fitted to the vertebra and the stopper is shielded by a gap shielding means ,
The winter wiper blade is characterized in that an end of the gap shielding means is slidably arranged outside the stopper .   The winter wiper blade according to claim 1, further comprising a plate-like member mounted at a position for shielding the gap as the gap shielding means.   The winter wiper blade according to claim 1, wherein a plate-like member disposed so as to shield the gap is integrally formed on the blade rubber, and the plate-like member is used as the gap shielding means.   2. The winter wiper blade according to claim 1, wherein a protrusion protruding so as to shield the gap is formed integrally with the stopper, and the protrusion serves as the gap shielding means.   An end portion of the blade rubber other than a portion fitted to the vertebra is extended to the stopper side, and a portion extended to the stopper side of the blade rubber is used as the gap shielding means. The winter wiper blade according to claim 1.

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