JP2007210515A - Vertebra for wiper blade and wiper blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertebra for a wiper blade and a wiper blade, applying diverse elasticity. <P>SOLUTION: This vertebra 100a includes: a main vertebra 110a for applying predetermined elasticity to a wiper blade rubber 2; and an auxiliary vertebra 111a for applying additional elasticity to the wiper blade rubber 2 in addition to the elasticity applied by the main vertebra 110a, wherein the auxiliary vertebra 111a is fixed to the main vertebra 110a so that at least one end part P1' in the longitudinal direction is slid in the longitudinal direction to the main vertebra 110a by a predetermined distance when the main vertebra 110a elastically deforms in the direction of thickness. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wiper blade used for wiping raindrops, dust, and the like, and more particularly to a wiper blade and a wiper blade vertebra used for a windshield of a moving body such as an automobile.

  In a vehicle such as an automobile, a wiper device is used for wiping raindrops, dust, and the like adhering to the windshield surface in order to secure a front view. This wiper device is configured by connecting a wiper blade and a wiper arm that transmits a driving force for reciprocating the wiper blade in an arc shape.

  Conventionally, as the wiper blade, one having a tournament structure as a connection fitting has been widely used. Since the wiper blade of this tournament structure is supported by the connection fitting at a plurality of points in the longitudinal direction of the wiper blade, it has a structure that can easily maintain the optimum wiping performance even on the curved surface of the windshield.

  By the way, in recent years, a connection fitting (also referred to as a tournament fitting) constituted by connecting a plurality of levers in the height direction is less likely to be adversely affected by the driving wind, and from the viewpoint of ensuring a good front view for the driver. The wiper blade which omits is put into practical use.

  This wiper blade has a shape curved in the thickness direction (perpendicular to the surface to be wiped) in a no-load state, and provides a predetermined elasticity and rigidity (torsional rigidity and lateral rigidity) to the wiper blade itself. The vertebra is installed in the vertebra mounting groove of the wiper blade rubber.

This wiper blade disperses the pressing force from the wiper arm in the longitudinal direction of the wiper blade rubber so that it can follow the curvature change of the windshield, and wiper blade by friction resistance when wiping the windshield surface It is comprised so that the deformation | transformation by the twist of a rubber may become small (for example, refer patent document 1).
JP 2001-504779 gazette (FIG. 2)

  By the way, such a conventional vertebra has a shape in which the width in the central portion in the longitudinal direction and the vicinity thereof is the widest, and the width is continuously narrowed toward both ends. For this reason, this vertebra has a central portion of the vertebra and its vicinity protruding from the wiper blade rubber in the width direction, and there is room for improvement in terms of aesthetics. There is a problem that it is easy to block the view.

  It is also desirable that the elasticity imparted by the vertebra can be easily adjusted at the longitudinal position of the wiper blade in order to cope with the curvature of the windshield curved surface that varies depending on the vehicle specification.

  Furthermore, in order to manufacture a conventional vertebra having a shape whose width varies along the longitudinal direction, a cutting process using a press or the like is required. By the way, although a vertebra is comprised from a spring material with high hardness, the processing of a spring material with high hardness is difficult originally. In addition, the processed surface such as a press of a spring material having a high hardness has a sharp end in the width direction, so that it is necessary to finish the processed surface for safety. Moreover, there is a problem in that the yield of the material is poor, and thus the manufacturing cost of the vertebra is high.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a wiper blade vertebra capable of following the curvature change of the windshield and narrowing the width of the central portion and the vicinity thereof. To do.

  Another object of the present invention is to provide a wiper blade vertebra capable of easily adjusting the elasticity imparted by the vertebra in the longitudinal position of the wiper blade.

  Another object of the present invention is to provide a wiper blade vertebra that is easy to manufacture and can reduce costs.

  In addition, the present invention prevents the wiper blade vertebra from projecting in the width direction from the wiper blade rubber at or near the center of the wiper blade rubber, improving aesthetics and reducing the adverse effects of running wind. Another object of the present invention is to provide a wiper blade that can reduce the driver's field of vision.

  In order to achieve the above object, the wiper blade vertebra of the present invention has a shape curved in the thickness direction in an unloaded state, and a main vertebra that imparts predetermined elasticity to the wiper blade rubber, and an unloaded state. An auxiliary vertebra having a shape curved in the thickness direction and providing auxiliary elasticity to the wiper blade rubber in addition to the elasticity provided by the main vertebra, wherein the main vertebra and the auxiliary vertebra are longitudinal The auxiliary vertebra is arranged in the thickness direction along the direction, and at least a part of the auxiliary vertebra faces the position where the pressing force from the wiper arm acts, and the auxiliary vertebra is elastic in the thickness direction of the main vertebra. When deforming, at least one end in the longitudinal direction can slide a predetermined distance in the longitudinal direction with respect to the main vertebra So as to, characterized in that it is fixed to the main vertebra.

  With such a configuration, since the auxiliary vertebra provided with the insufficient elasticity provided by the main vertebra is provided in the thickness direction, the size of the main vertebra in the width direction can be reduced, and the entire wiper blade vertebra is provided. The size in the width direction can be reduced. In addition, by using this wiper blade vertebra, the wiper blade vertebra does not protrude in the width direction from the wiper blade rubber at or near the center of the wiper blade rubber, improving aesthetics and driving. The adverse effect of wind can be reduced, and the driver's view can be reduced.

  In addition, since the auxiliary vertebra provided with the lack of elasticity provided by the main vertebra is arranged in the thickness direction, the main vertebra and the auxiliary vertebra are formed in a strip shape (rectangular shape) having a constant width along the longitudinal direction. be able to. With this type of vertebra, the width direction end face does not become a cut surface when a wire having a round shape in the width direction (substantially oval in cross section) is formed into a strip shape by compression, so the width end face is finished. Is no longer necessary. For this reason, the manufacturing cost of a vertebra can be reduced.

  Further, by adjusting the length of the auxiliary vertebra, the moment of inertia of the cross section and the position in the longitudinal direction with respect to the main vertebra, the elasticity imparted by the vertebra can be adjusted at the position in the longitudinal direction of the wiper blade.

  In the present invention, the “no-load state” means a state before the wiper blade vertebra is mounted on the wiper blade rubber and a state where the wiper blade is not pressed against the surface to be wiped.

  Further, in the present invention, “the auxiliary vertebra faces at a position where at least a part in the longitudinal direction is subjected to the pressing force from the wiper arm” means that the auxiliary vertebra is in the thickness direction over the entire length of the connecting portion connecting the wiper arm. Not only the case where they overlap, but also the case where the auxiliary vertebra overlaps in the thickness direction with a part of the connecting portion connecting the wiper arms in the longitudinal direction.

  Note that if the pressing force from the wiper arm does not act on the auxiliary vertebra, the auxiliary vertebra cannot impart elasticity to the wiper blade rubber.

  In the present invention, “elastic deformation in the thickness direction” means that the wiper blade vertebra is elastically deformed by receiving a pressing force of the wiper arm from an unloaded state and being pressed against the surface to be wiped. When reciprocating on the surface to be wiped, it refers to both cases in which elastic deformation is performed following the change in the curvature of the surface to be wiped.

  In the present invention, “slidable for a predetermined distance” means that the longitudinal length of the auxiliary vertebra is such that the bending rigidity of the overlapping portion of the main vertebra and the auxiliary vertebra is not higher than necessary when the main vertebra is elastically deformed in the thickness direction. It means that at least one end of the direction can be displaced relative to the main vertebra in the longitudinal direction.

  For example, when the auxiliary vertebra is arranged on the surface side of the main vertebra which is curved in the thickness direction in a no-load state and has a small curvature, the main vertebra and the auxiliary vertebra have a larger curvature (a smaller radius of curvature). When elastically deforming, the non-fixed portion of the auxiliary vertebra is slightly displaced (slid) relative to the main vertebra in the direction of the center of the main vertebra. On the other hand, when the main vertebra and the auxiliary vertebra are elastically deformed toward the side where the curvature becomes smaller (the radius of curvature becomes larger), the non-fixed portion of the auxiliary vertebra is slightly relative to the end of the main vertebra with respect to the main vertebra Displace (slide).

  If the auxiliary vertebra is fixed to the main vertebra at both ends in the longitudinal direction, when the main vertebra and the auxiliary vertebra are elastically deformed to the side where the curvature increases (the radius of curvature decreases), the auxiliary vertebra is Stretched in the direction. For this reason, the bending rigidity between the fixed points of the wiper blade vertebra is higher than necessary. On the other hand, when the main vertebra and the auxiliary vertebra are elastically deformed to the side where the curvature becomes smaller (the curvature radius becomes larger), the auxiliary vertebra is compressed in the longitudinal direction. For this reason, the bending rigidity between the fixed points of the wiper blade vertebra is higher than necessary.

  Thus, if the auxiliary vertebra is fixed to the main vertebra at both longitudinal ends, the bending rigidity between the fixed points of the wiper blade vertebra is more than necessary when the main vertebra is elastically deformed in the thickness direction. Therefore, when the wiper blade is pressed against the surface to be wiped, the main vertebra cannot cope with the curvature of the surface to be wiped, and when the wiper blade reciprocates on the surface to be wiped, There are cases where it is not possible to follow the change in curvature of the wiping surface.

  In order to eliminate this problem, in the present invention, when the main vertebra is elastically deformed in the thickness direction, at least one end portion in the longitudinal direction of the auxiliary vertebra can be displaced (slid) relative to the main vertebra in the longitudinal direction. In this way, the auxiliary vertebra is not expanded and compressed.

  In the present invention, “fix the auxiliary vertebra to the main vertebra” means that when the main vertebra is elastically deformed in the thickness direction, at least one end portion in the longitudinal direction of the auxiliary vertebra is longitudinal with respect to the main vertebra. The relative position in the longitudinal direction of the auxiliary vertebra with respect to the main vertebra is not changed at the fixed portion.

  Note that the main vertebra and the auxiliary vertebra are not only fixed at one point (one point), but when the main vertebra is elastically deformed in the thickness direction, at least one end portion of the auxiliary vertebra in the longitudinal direction is in relation to the main vertebra. The auxiliary vertebra may be fixed to the main vertebra at two locations (two points) or more as long as it can slide a predetermined distance in the longitudinal direction.

  In the wiper blade vertebra of the present invention, the auxiliary vertebra is fixed to the main vertebra near one end in the longitudinal direction, and the other end of the auxiliary vertebra is when the main vertebra is elastically deformed in the thickness direction. The main vertebra is slidable by a predetermined distance in the longitudinal direction. With such a configuration, the main vertebra and the auxiliary vertebra are fixed in advance at a predetermined location and integrated, so that the wiper blade can be easily assembled. Further, the torsional rigidity of the fixing portion of the wiper blade vertebra can be increased.

  In the wiper blade vertebra of the present invention, the auxiliary vertebra is fixed to the main vertebra at a substantially central portion in the longitudinal direction of the main vertebra, and at least one end of the auxiliary vertebra is elastic in the thickness direction of the main vertebra. When deformed, the main vertebra is slidable by a predetermined distance in the longitudinal direction. With such a configuration, the main vertebra and the auxiliary vertebra are fixed in advance at a predetermined location and integrated, so that the wiper blade can be easily assembled.

  The wiper blade vertebra according to the present invention is characterized in that the auxiliary vertebra includes a plurality of vertebra pieces arranged in a longitudinal direction. With such a configuration, various types of elasticity can be imparted to the wiper blade rubber depending on the way in which the plurality of vertebra pieces are arranged in the longitudinal direction.

  In the wiper blade vertebra of the present invention, the auxiliary vertebra includes a plurality of vertebra pieces arranged in a thickness direction along a longitudinal direction, and among the plurality of vertebra pieces, a vertebra piece directly above the main vertebra is When the main vertebra is elastically deformed in the thickness direction, at least one end in the longitudinal direction is fixed to the main vertebra so that it can slide a predetermined distance in the longitudinal direction with respect to the main vertebra, The vertical bar piece is such that when the vertical bar piece elastically deforms in the thickness direction, at least one end in the longitudinal direction can slide a predetermined distance in the longitudinal direction relative to the vertical bar piece. It is characterized by being fixed to. With such a configuration, various types of elasticity can be imparted to the wiper blade rubber depending on the arrangement of the plurality of vertebra pieces in the thickness direction. In addition, the size of the main vertebra and the auxiliary vertebra can be reduced.

  The wiper blade vertebra according to the present invention is characterized in that the auxiliary vertebra includes a plurality of vertebra pieces arranged in a longitudinal direction. With such a configuration, various types of elasticity can be imparted to the wiper blade rubber depending on the way in which the plurality of vertebra pieces are arranged in the longitudinal direction.

  In the wiper blade vertebra of the present invention, of the plurality of vertebra parts, a vertebra part directly above the main vertebra is fixed to the main vertebra near one end in the longitudinal direction, and the other end of the vertebra is When the main vertebra is elastically deformed in the thickness direction, the main vertebra is slidable by a predetermined distance in the longitudinal direction with respect to the main vertebra. With such a configuration, the torsional rigidity of the fixing portion of the wiper blade vertebra can be increased.

  In the wiper blade vertebra of the present invention, of the plurality of vertebra bra pieces, the vertebra bra pieces other than those directly above the main vertebra bra are fixed to the vertebra bra pieces immediately below in the vicinity of one end in the longitudinal direction, and the other end of the vertebra bra piece is When the directly underneath vertical bar piece is elastically deformed in the thickness direction, the vertical bar piece can be slid by a predetermined distance in the longitudinal direction with respect to the lower vertical bar piece. With such a configuration, the torsional rigidity of the fixing portion of the wiper blade vertebra can be increased.

  The wiper blade vertebra of the present invention is characterized in that the auxiliary vertebra has a second moment of section smaller than that of the main vertebra. That is, by using an auxiliary vertebra which is narrower than the main vertebra and thinner than the main vertebra, the auxiliary vertebra can be appropriately bent to provide auxiliary elasticity appropriately. It may be realized by changing the materials of the main vertebra and the auxiliary vertebra.

  The wiper blade vertebra of the present invention is characterized in that the auxiliary vertebra is located on a surface side of the main vertebra having a small curvature. With such a configuration, the elasticity of the auxiliary vertebra can be effectively imparted to the wiper blade rubber.

  The wiper blade vertebra of the present invention is characterized by comprising a pair of wiper blade vertebras parallel to the longitudinal direction. With such a configuration, it is possible to simultaneously attach to a wiper blade rubber having a vertebra attachment groove in parallel.

  The wiper blade vertebra of the present invention comprises a pair of wiper blade vertebras in parallel in the longitudinal direction, one wiper blade vertebra being a first main vertebra and a first auxiliary vertebra, and the other wiper blade vertebra being When the second main vertebra and the second auxiliary vertebra are used, the fixing positions of the first main vertebra and the first auxiliary vertebra and the fixing positions of the second main vertebra and the second auxiliary vertebra are The wiper blade vertebra has the same end side in the longitudinal direction. With such a configuration, it is possible to increase the torsional rigidity on the end portion side where the fixing portion is provided.

  During the wiper operation, when the wiper blade wipes the surface to be wiped, twisting is applied more toward the outer peripheral side than the inner peripheral side of the arc-shaped locus drawn by the wiper blade. For this reason, if the wiper blade vertebra is mounted on the wiper blade rubber so that the fixed portion having high torsional rigidity is located on the outer peripheral side of the wiper blade, the present invention is more effective for twisting during wiper operation. It becomes the target.

  In the wiper blade vertebra of the present invention, when one wiper blade vertebra is a first main vertebra and a first auxiliary vertebra, and the other wiper blade vertebra is a second main vertebra and a second auxiliary vertebra. Further, the first auxiliary vertebra and the second auxiliary vertebra are shifted by a predetermined amount from the longitudinal center positions of the first main vertebra and the second main vertebra to the end portions in opposite directions. It is characterized by being provided in the position. With such a configuration, the wiper blade vertebra of the present invention can impart various elasticity to the wiper blade rubber by changing the shift amount of the first auxiliary vertebra and the second auxiliary vertebra.

  The wiper blade vertebra of the present invention is a portion in which neither the first auxiliary vertebra or the second auxiliary vertebra is provided in the longitudinal direction of the first main vertebra and the second main vertebra. The total length, the total length of the portions where either the first auxiliary vertebra or the second auxiliary vertebra is provided, the first auxiliary vertebra and the second auxiliary vertebra In any case, the total length of the portions in which both are provided is substantially the same. With such a configuration, when the first main vertebra, the second main vertebra, the first auxiliary vertebra, and the second auxiliary vertebra are in the above-described relationship, the wiper blade rubber has an appropriate elasticity in the longitudinal direction. It becomes.

  In the wiper blade vertebra of the present invention, the fixing is performed by spot welding or caulking, but other fixing means such as an adhesive may be used.

  The wiper blade vertebra of the present invention is characterized in that the first main vertebra and the second main vertebra are connected at one end in the longitudinal direction. With such a configuration, the pair of vertebras can be simultaneously mounted in the vertebra mounting groove, and the assembly workability can be improved. Further, the torsional rigidity on the connection side can be increased.

  In the present invention, the term “coupled” refers to an end portion of the first main vertebra which is obtained by fixing a metal piece or the like to the end portion of the first main vertebra and the end portion of the second main vertebra by welding or the like. And integrating the end portions of the second main vertebra.

  During the wiper operation, when the wiper blade wipes the surface to be wiped, twisting is applied more toward the outer peripheral side than the inner peripheral side of the arc-shaped locus drawn by the wiper blade. For this reason, if the wiper blade rubber is mounted on the wiper blade rubber so that the connecting side is on the outer periphery of the wiper blade, higher torsional rigidity can be obtained, which is more effective for twisting during wiper operation. It becomes.

  The wiper blade vertebra of the present invention is characterized in that the main vertebra and the auxiliary vertebra are formed by compressing a metal wire having a round end (substantially elliptical in cross section) into a band shape. . With such a configuration, the end faces in the width direction of the main vertebra and the auxiliary vertebra do not become cut surfaces, and thus finishing processing of the end faces in the width direction becomes unnecessary. For this reason, the manufacturing cost of a vertebra can be reduced.

  The wiper blade vertebra of the present invention is mounted in a vertebra mounting groove formed in the longitudinal direction of the wiper blade rubber.

  The wiper blade of the present invention includes a wiper blade rubber having a base portion that supports a wiping portion for wiping the surface to be wiped, and a vertical blade mounting groove formed in the longitudinal direction of both side surfaces of the base portion, and the wiper blade mounted in the vertical blade mounting groove The wiper blade vertebra is provided.

  The wiper blade of the present invention is characterized in that the side surfaces in the width direction of the main vertebra and the auxiliary vertebra do not protrude in the width direction from the base portion in the longitudinal direction. With such a configuration, aesthetics can be improved, airflow is not disturbed, buoyancy can be reduced during high speed travel, and a reduction in wiper wiping performance can be prevented.

  The wiper blade of the present invention is characterized in that a connecting portion for connecting a wiper arm is mounted on the base portion.

  The wiper blade of the present invention is characterized in that the connecting portion is mounted at a substantially central portion in the longitudinal direction of the base portion.

  As described above, according to the present invention, since the auxiliary vertebra provided with the insufficient elasticity provided by the main vertebra in the thickness direction is provided, the size of the main vertebra in the width direction can be reduced, and the wiper The overall size of the blade vertebra can be reduced in the width direction.

  In addition, by using this wiper blade vertebra, the wiper blade vertebra does not protrude in the width direction from the wiper blade rubber at or near the center of the wiper blade rubber, improving aesthetics and driving. The adverse effect of wind can be reduced, and the driver's view can be reduced.

  In addition, since the auxiliary vertebra provided with the lack of elasticity provided by the main vertebra is arranged in the thickness direction, the main vertebra and the auxiliary vertebra are formed in a strip shape (rectangular shape) having a constant width along the longitudinal direction. be able to. With this type of vertebra, the width direction end face does not become a cut surface when a wire having a round shape in the width direction (substantially oval in cross section) is formed into a strip shape by compression, so the width end face is finished. Is no longer necessary. For this reason, the manufacturing cost of a vertebra can be reduced.

  Further, by adjusting the length of the auxiliary vertebra, the moment of inertia of the cross section and the position in the longitudinal direction with respect to the main vertebra, the elasticity imparted by the vertebra can be easily adjusted at the position in the longitudinal direction of the wiper blade.

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

  FIG. 1 is a perspective view mainly showing a front side of an embodiment of a wiper blade of the present invention. In the figure, a white arrow indicates an example of the direction of traveling wind. Also in FIG. 2, the white arrow is the same as in FIG.

  In the present invention, as shown in FIG. 1, the X-axis direction is referred to as a width direction, the Y-axis direction is referred to as a longitudinal direction, and the Z-axis direction is referred to as a height direction (vertical direction or thickness direction).

  The wiper blade 1 is referred to as a wiper blade rubber 2 and a pair of wiper blade vertebras 100a and 100b (hereinafter referred to as vertebra 100a and 100b) that impart predetermined elasticity and rigidity (torsional rigidity and lateral rigidity) to the wiper blade rubber 2. ). The vertebras 100a and 100b have a shape curved in the thickness direction in an unloaded state, and the wiper blade 1 is formed in a vertebra mounting groove formed in the longitudinal direction of a wiper blade rubber 2 described later. By attaching the vertebras 100a and 100b, the vertebra is bent to a predetermined curvature. Vertibra 100a and 100b will be described in detail later.

  A wiper arm connecting portion 4 for connecting a wiper arm 3 for transmitting a driving force for reciprocating the wiper blade 1 in an arc shape is provided at the center of the long wiper blade 1. Further, on the leeward side of the upper part of the wiper blade rubber 2 of the wiper blade 1, fins 6 are provided for generating a downward pressing force on the wiper blade 1 by the traveling wind.

  2 is a cross-sectional view taken along arrow AA in FIG. As shown in the figure, in the wiper blade rubber 2, a wiping portion 2b for wiping a surface to be wiped 10 such as a windshield of an automobile and a base portion 2a for supporting the wiping portion 2b are connected by a neck portion 5. The wiping portion 2b has a substantially triangular cross section, and has a lip portion 7 that comes into contact with the surface to be wiped 10 at its tip. When the wiper blade 2 is pressed against the surface to be wiped 10, pressure is applied substantially evenly in the longitudinal direction of the wiping portion 2 b, and the wiping portion 2 b has an appropriate tilt angle of 30 to 50 degrees with respect to the surface to be wiped 10. So that the edge of the lip 7 contacts the wiped surface 10 at an appropriate angle.

  The wiper blade rubber 2 is made of an elastic body such as rubber or elastomer, and can be easily deformed according to the surface to be wiped 10 having a complicated curved surface. The wiper blade rubber 2 may be made of another material that can obtain substantially the same elasticity as rubber. In this embodiment, the wiper blade rubber 2 has a base 2a, a neck 5 and a wiping portion 2b integrally formed by a mold. For example, the base 2a of the wiper blade 2 is formed as a separate body having a connection groove. It is good also as a structure which forms and the wiping part 2b which has a connection part engaged with this connection groove | channel is shape | molded by another body of another material, and couple | bonds.

  The base part 2a of the wiper blade rubber 2 is formed with a vertebra mounting groove 21a along the longitudinal direction of the wiper blade rubber 2, and the vertebras 100a and 100b are mounted in the vertebra mounting groove 21a. Auxiliary vertebras 111a and 111b are provided on the upper surfaces of the main vertebras 110a and 110b so as to overlap in the thickness direction. The vertical bars 100a and 100b will be described in detail later.

  Further, the wiper arm connecting portion 4 has gripping portions 4a and 4b. On the other hand, a recess 20a is provided below the vertebra 100a of the base 2a, and a recess 20b is provided below the vertebra 100b.

  The grip portion 4a of the wiper arm connection portion 4 grips the upper surface end portion of the base portion 2a and the recess portion 20a, and the grip portion 4b of the wiper arm connection portion 4 grips the upper surface end portion of the base portion 2a and the recess portion 20b. Thus, the wiper arm connecting portion 4 is fixed to the wiper blade rubber 2.

  As will be described later, when the main vertebra is elastically deformed in the thickness direction, the end on the side opposite to the fixed side end of the auxiliary vertebra slides a predetermined distance in the longitudinal direction with respect to the main vertebra. However, the grip portions 4a and 4b of the wiper arm connection portion 4 grip the base portion 2a of the wiper blade rubber 2 so as not to restrict the above-described slide.

  The wiper arm connecting portion 4 has a hinge pin 4c for connecting the wiper arm 3 so as to be rotatable and detachable.

  As shown in FIGS. 1 and 2, one side surface (side surface side surface of the base portion 2a) of the main vertebras 110a and 110b and the auxiliary vertebras 111a and 111b in the width direction of the wiper blade rubber 2 extends in the longitudinal direction. The main vertebras 110a and 110b and the auxiliary vertebras 111a and 111b are mounted in the vertebra mounting groove 21a so as not to protrude in the width direction from the base 2a.

Next, the vertical bars 100a and 100b will be described in detail.
FIG. 3 is a perspective view of the vertebras 100a and 100b. FIG. 4 is a plan view showing the vertebras 100a and 100b.

  As shown in FIGS. 3 and 4, the vertebra 100a includes a main vertebra 110a (first main vertebra) that imparts predetermined elasticity to the wiper blade rubber 2, and auxiliary elasticity in addition to the elasticity that the main vertebra 110a provides. An auxiliary vertebra 111a (first auxiliary vertebra) that imparts elasticity to the wiper blade rubber 2 is provided. The main vertebra 110a and the auxiliary vertebra 111a are elastically deformable in the thickness direction and have a shape curved in the thickness direction in an unloaded state.

  The main vertebra 110a and the auxiliary vertebra 111a are made of, for example, a stainless steel wire or a steel wire for a spring, and a wire rod having a round shape at the end in the width direction (substantially elliptical in cross section) is formed into a band shape by compression processing, and is then predetermined. It is cut to a length of. If a wire having a round end in the width direction (substantially elliptical in cross section) is formed into a strip shape by compression processing, the end surface in the width direction does not become a cut surface, so the finishing process of the end surface in the width direction is not required, and the vertical The manufacturing cost can be reduced.

  In addition, you may use the metal material for other springs for manufacture of the main vertebra 110a and the auxiliary | assistant vertebra 111a.

  The auxiliary vertebra 111a is shorter, narrower and thinner than the main vertebra 110a, and is arranged in the thickness direction on the surface side of the main vertebra 110a having a small curvature along the longitudinal direction. It is fixed to the main vertebra 110a by spot welding at a point P1 in the vicinity of one end thereof.

  It is desirable that the curvature of the main vertebra 110a is substantially equal to the curvature of the auxiliary vertebra 111a or the curvature of the main vertebra 110a is slightly smaller than the curvature of the auxiliary vertebra 111a, but the curvature relationship between them is limited to this. It is not something.

  Similarly, as shown in FIGS. 3 and 4, the vertebra 100b includes a main vertebra 110b (second main vertebra) that imparts elasticity to the wiper blade rubber 2 and an elasticity that the main vertebra 110b provides. It has an auxiliary vertebra 111b (second auxiliary vertebra) that gives the wiper blade rubber 2 a certain elasticity. The main vertebra 110b and the auxiliary vertebra 111b are elastically deformable in the thickness direction and have a shape curved in the thickness direction in an unloaded state.

  The main vertebra 110b and the auxiliary vertebra 111b are manufactured in the same manner as the main vertebra 110a and the auxiliary vertebra 111a, and the curvature relationship between the main vertebra 110b and the auxiliary vertebra 111b is the same as that of the main vertebra 110a and the auxiliary vertebra 111a. .

  The auxiliary vertebra 111b has a shorter length, a smaller width, and a smaller thickness than the main vertebra 110b, and is arranged in the thickness direction on the surface side of the main vertebra 110b having a small curvature along the longitudinal direction. It is fixed to the main vertebra 110b by spot welding at a point P2 near one end thereof.

  The main vertebras 110a and 110b have symmetrical dimensions and shapes, and the auxiliary vertebras 111a and 110b have the same dimensions and shapes.

  The auxiliary vertebras 111a and 111b extend from the points P1 and P2 beyond the wiper arm connecting portion 4 toward the opposite end, and the auxiliary vertebras 111a and 111b extend in the longitudinal direction of the main vertebras 110a and 110b. At the center, it overlaps the wiper arm connecting portion 4 in the thickness direction (height direction). For this reason, the pressing force from the wiper arm 3 is directly applied to the auxiliary vertebras 111a and 111b.

  Further, the vertebras 100a and 100b are arranged in parallel at predetermined intervals, and a rectangular piece of metal 100c in a plan view is spotted at the end of the spot welded points P1 and P2 of the main vertebras 110a and 110b. It is fixed by welding. Such a configuration can increase the torsional rigidity of the ends of the vertebras 100a and 100b on the side where the metal piece 100c is spot-welded.

  In both of the vertebras 100a and 100b, the end portions P1 'and P2' opposite to the end portions subjected to spot welding (points P1 and P2) are fixed to the main vertebra 110a (110b) and the auxiliary vertebra 111a (111b). It has not been. The opposite ends P1 ′ and P2 ′ of the auxiliary vertebra 111a (111b) have a predetermined distance in the longitudinal direction with respect to the main vertebra 110a (110b) when the main vertebra 110a (110b) is elastically deformed in the thickness direction. It is separated from the main vertebra 110a (110b) so as to be slidable.

  Note that, in the vertebra 100a (100b), the main vertebra 110a (110b) and the auxiliary vertebra 111a also at the end P1 ′ (P2 ′) opposite to the end where spot welding (point P1 (point P2)) is performed. When (111b) is fixed by spot welding or the like, when the main vertebra 110a (110b) is elastically deformed in the thickness direction, the auxiliary vertebra 111a (111b) is extended or compressed in the longitudinal direction. For this reason, the bending rigidity between the fixing points of the vertebra 100a (100b) becomes too high as necessary, and the main vertebra 110a (110b) of the wiping surface 10 is pressed when the wiper blade 1 is pressed against the wiping surface 10. In some cases, the main vertebra 110a (110b) cannot follow the curvature change of the surface to be wiped 10 when the wiper blade 1 reciprocates on the surface 10 to be wiped.

  Here, a case will be described in which the pressing force from the wiper arm 3 acts on the vertebra 100a and the main vertebra 110a and the auxiliary vertebra 111a are elastically deformed to the side where the curvature becomes smaller (the curvature radius becomes larger). FIG. 5 is a diagram showing a relationship between the end portions of the auxiliary vertebra 111a when the end portions of the auxiliary vertebra 111a are fixed to the main vertebra 110a with P1, and FIG. It is a figure which shows both relationship at the time of being fixed. 5 and 6, (a) shows the state before the pressing force from the wiper arm 3 acts, and (b) shows the state where the pressing force (white arrow) from the wiper arm 3 acts. Show.

  As shown in FIGS. 5 (a) and 5 (b), the pressing force from the wiper arm 3 acts on the vertebra 100a and the main vertebra 110a and the auxiliary vertebra 111a are elastic toward the side where the curvature becomes smaller (the radius of curvature becomes larger). When deformed, the relative position of the non-fixed portion other than P1 of the auxiliary vertebra 111a, for example, the end P1 'opposite to P1 with respect to the main vertebra 110a is slightly displaced toward the right end of the main vertebra 110a.

  In this state, when the pressing force from the wiper arm 3 is released, the main vertebra 110a and the auxiliary vertebra 111a are elastically deformed toward the side where the curvature increases (the radius of curvature decreases), and the end portion P1 ′ opposite to P1 Relative to the main vertebra 110a is slightly displaced toward the center of the main vertebra 110a.

  Similarly, as shown in FIGS. 6A and 6B, the pressing force from the wiper arm 3 acts on the vertebra 100a and the curvature of the main vertebra 110a and the auxiliary vertebra 111a is reduced (the radius of curvature is increased). When elastically deforming to the side, the relative positions of the auxiliary vertebra 111a other than P1 other than P1, for example, both side portions P1 ', with respect to the main vertebra 110a are slightly displaced toward both ends of the main vertebra 110a.

  In this state, when the pressing force from the wiper arm 3 is released, the main vertebra 110a and the auxiliary vertebra 111a are elastically deformed toward the side where the curvature becomes larger (the radius of curvature becomes smaller), and the both end portions P1 ′ with respect to the main vertebra 110a. The relative position is slightly displaced toward the central portion of the main vertebra 110a.

  5 (a) and 5 (b), the end (P1 ′) opposite to the end welded (P1) of the auxiliary vertebra 111a is also fixed to the main vertebra 110a by spot welding or the like. When the main vertical bar 110a is elastically deformed in the thickness direction, the auxiliary vertical bar 111a is expanded or compressed in the longitudinal direction. For this reason, the bending rigidity between the fixing points (P1, P1 ′) of the vertebra 100 is too high, and the main vertebra 110a corresponds to the curvature of the surface to be wiped 10 when the wiper blade 1 is pressed against the surface 10 to be wiped. In addition, when the wiper blade 1 reciprocates on the surface to be wiped 10, the main vertebra 110 a may not be able to follow the curvature change of the surface to be wiped 10.

  6 (a) and 6 (b), when one end (P1 ') of the auxiliary vertebra 111a is also fixed to the main vertebra 110a by spot welding or the like, the main vertebra 110a is elastic in the thickness direction. During deformation, the space between P1 and P1 ′ of the auxiliary vertebra 111a is expanded or compressed in the longitudinal direction. For this reason, the bending rigidity between the fixing points (P1, P1 ′) of the vertebra 100 is too high, and the main vertebra 110a corresponds to the curvature of the surface to be wiped 10 when the wiper blade 1 is pressed against the surface 10 to be wiped. In addition, when the wiper blade 1 reciprocates on the surface to be wiped 10, the main vertebra 110 a may not be able to follow the curvature change of the surface to be wiped 10.

  In order to eliminate this problem, in the present embodiment, when the main vertebra 110a is elastically deformed in the thickness direction, one end (P1 ′) of the auxiliary vertebra 111a in the longitudinal direction is longitudinal with respect to the main vertebra 110a. The auxiliary vertebra 111a is not expanded or compressed.

  The same applies to the case where the curvatures of the main vertebra 110b and the auxiliary vertebra 111b change because the main vertebra 110a and the auxiliary vertebra 111a follow the change in curvature of the surface to be wiped 10. In FIGS. 5 and 6, the displacement amount of the relative position is exaggerated for convenience of explanation.

  As shown in FIG. 4, the auxiliary vertebra 111a is provided at a position shifted y from the center of the main vertebra 110a, and the auxiliary vertebra 111b is the same as the shift of the auxiliary vertebra 111a from the center of the main vertebra 110b. It is provided at a position shifted x on the side. The auxiliary vertebras 111a and 111b are both (x + y) in length. That is, these auxiliary vertebras 111a and 111b are provided by being shifted in the opposite directions by x. Further, neither of the auxiliary vertebras 111a and 111b has a total length of 2 × (zy) that is not provided on the main vertebras 110a and 110b, and only one of the auxiliary vertebras 111a (111b) is the main vertebra 110a (110b). The total length of 2 × (y−x) provided above and the total length of 2 × x in which both of the two auxiliary vertebras 111a and 111b are provided on the main vertebras 110a and 110b are approximately. When the same amount is obtained, generally, the wiper blade rubber 2 has appropriate elasticity in the longitudinal direction, and the pressing force from the wiper arm 3 is substantially equal to the pressing force in the longitudinal direction of the wiper blade 1. Become. In addition, the width | variety, length, thickness, and deviation | shift amount of auxiliary | assistant vertebra 111a (111b) are selected by the shape etc. of the to-be-wiped surface 10. FIG.

  Further, as the auxiliary vertebra 111a, one having a smaller secondary moment than the main vertebra 110a is used. That is, the auxiliary vertebra 111a is more easily bent than the main vertebra 110a. This can be realized, for example, by using a material of the auxiliary vertical bar 111a different from that of the main vertical bar 110a in addition to the width and thickness of the auxiliary vertical bar 111a. The relationship between the auxiliary vertebra 111b and the main vertebra 110b is the same. Note that the vertebras 100 a and 100 b are deformed in advance so as to be suitable for the shape of the surface to be wiped 10 and are attached to the vertebra attachment groove 21 a of the wiper blade rubber 2. In this case, the wiper blade 1 according to the present embodiment gives various elasticity depending on the position in the longitudinal direction of the wiper blade 1 depending on the width, length, thickness, deviation amount, and material of the auxiliary vertebras 111a and 111b. Is possible.

  FIG. 7 is a diagram illustrating a method of fixing the vertebras 100a and 100b. As shown in the figure, the main vertebras 110a and 110b of the vertebras 100a and 100b are provided with cutout portions 8a and 8b, respectively, and by inserting the stopper member 9 into the cutout portions 8a and 8b, a pair of vertebra 100a, 100b is fixed.

  FIG. 8 is a view showing one end of the wiper blade rubber 2. As shown in the figure, one end of the pair of vertebras 100a and 100b is fixed by a stopper member 9, and as shown in FIG. 4, the other end of the pair of vertebras 100a and 100b is a metal piece 100c. Fixed. The pair of vertebras 100a and 100b is fixed to the wiper blade rubber 2 by the stopper member 9 and the metal piece 100c.

  During the wiper operation, that is, when the wiper blade 1 wipes the surface to be wiped 10 such as the windshield, the twist is more toward the outer peripheral side than the inner peripheral side of the arc-shaped locus drawn by the wiper blade 1. It takes a lot. For this reason, the vertebras 100a, 100b are formed in the vertebra mounting groove 21a of the wiper blade rubber 2 so that the end portions of the main vertebras 110a, 110b on the spot welded points P1, P2 side are on the outer peripheral side of the wiper blade 1. It is desirable to be mounted. This is because the torsional rigidity at the spot-welded points P1 and P2 is high. In particular, the higher torsional rigidity is obtained by connecting the spot welded ends P1 and P2 of the main vertebras 110a and 110b via the metal piece 100c as described above. More effective against twisting.

  In addition, the fixing point between the main vertebra 110a (110b) and the auxiliary vertebra 111a (111b) is not only one (one point), but also when the main vertebra 110a (110b) is elastically deformed in the thickness direction, the auxiliary vertebra 111a If at least one end in the longitudinal direction of (111b) is slidable by a predetermined distance in the longitudinal direction with respect to main vertebra 110a (110b), auxiliary vertebra 111a (111b) is placed in two locations (2 in the main vertebra 110a (110b)). Point) It may be fixed above.

  Moreover, the fixing location of the main vertebra 110a (110b) and the auxiliary vertebra 111a (111b) is not limited to the end of the auxiliary vertebra 111a (111b). For example, as shown in FIG. 6, the auxiliary vertebra 111a (111b) is arranged so as to have the same length in the longitudinal direction around the wiper arm connecting portion 4, and the central portion of the auxiliary vertebra 111a (111b) is the main vertebra. 110a (110b) is fixed by spot welding. Further, both ends of the auxiliary vertebra 111a (111b) are not fixed, and when the main vertebra 110a (110b) is elastically deformed in the thickness direction, both ends of the auxiliary vertebra 111a (111b) are the main vertebra 110a (110b). However, they may be separated so as to be slidable by a predetermined distance in the longitudinal direction.

  Further, both end portions of the vertebras 100 a and 100 b may be fixed by the stopper member 9.

  FIG. 9 is a plan view showing a vertebra according to another embodiment of the present invention. As shown in the figure, on the main vertebra 120a, an auxiliary vertebra 121a (vertebra piece) is spot-welded at a point P3 near one end, and the auxiliary vertebra 122a (vertebra piece) is a point near one end. It is spot welded at P4. On the other hand, on the main vertebra 120b, an auxiliary vertebra 121b (vertebra piece) is spot-welded at a point P5 near one end, and an auxiliary vertebra 122b (vertebra piece) is spot-welded at a point P6 near one end. Has been provided. The four auxiliary vertebras are configured so that the lengths of the diagonal pairs are equal.

  Further, the other end portions of the auxiliary vertebras 121a and 122a are not fixed to the main vertebras 120a and 120b. The main vertebras 120a and 120b are separated from each other so that they can slide in a predetermined distance. The other end portions of the auxiliary vertebras 121b and 122b have the same configuration. The other end portions of the auxiliary vertebras 121a, 122a, 121b, and 122b overlap the wiper arm connection portion 4 in the thickness direction (height direction).

  FIG. 10 is a plan view showing a vertebra according to still another embodiment of the present invention. As shown in the figure, an auxiliary vertebra 131a (vertebra piece) is spot welded at a point P7 near one end on the main vertebra 130a, and an auxiliary vertebra 132a (vertebra piece) on the auxiliary vertebra 131a. Is spot welded at a point P8 near one end thereof. Further, on the main vertebra 130b, an auxiliary vertebra 131b (vertebra piece) is spot welded at a point P9 near one end, and on the auxiliary vertebra 131b, an auxiliary vertebra 132b (vertebra piece) is near one end. It is spot welded at point P10. That is, the main vertebra bratibra 130a (130b) and the auxiliary vertebras 131a and 132a (131b and 132b) form a three-layer structure. And the length of an auxiliary vertebra (vertebra bra piece) is short and the width | variety is so narrow in the upper part of a laminated structure. Note that spot welding is performed only on the lower layer of the stacked layer. For example, the main vertebra 130a and the auxiliary vertebra 131a are fixed by spot welding at a point P7, and the auxiliary vertebra 131a and the auxiliary vertebra 132a are fixed by spot welding at a point P8. It is not fixed to the vertebra 131a. The same applies to the point P10.

  FIG. 11 is a plan view showing a vertebra according to still another embodiment of the present invention. As shown in the figure, on the main vertebra 140a, an auxiliary vertebra 141a (vertebra piece) is spot-welded at a point P11 near one end thereof, and an auxiliary vertebra 144a (vertebra piece) is provided. It is spot welded at a point P14 near one end. Further, an auxiliary vertebra 142a (vertebra bra piece) is spot-welded on the auxiliary vertebra 141a at a point P12 near one end thereof. On the auxiliary vertebra 144a, an auxiliary vertebra 143a (vertebra piece) is spot-welded at a point P13 near one end thereof. On the main vertebra 140b, an auxiliary vertebra 141b (vertebra piece) is spot-welded at a point P15 near one end thereof, and an auxiliary vertebra 144b (vertebra piece) is placed at a point P18 near one end thereof. Are spot welded. Further, on the auxiliary vertebra 141b, an auxiliary vertebra 142b (vertebra piece) is spot-welded at a point P16 in the vicinity of one end thereof. On the auxiliary vertebra 144b, an auxiliary vertebra 143b (vertebra bra piece) is spot-welded at a point P17 in the vicinity of one end thereof. Similar to the embodiment shown in FIG. 10, the main vertebra 140a (140b) and the auxiliary vertebras 141a, 142a, 143a, 144a (141b, 142b, 143b, 144b) form a three-layer structure. And the length of an auxiliary vertebra (vertebra bra piece) is short and the width | variety is so narrow in the upper part of a laminated structure. In addition, it is the same as that of the case of FIG.

  FIG. 12 is a plan view showing a vertebra according to still another embodiment of the present invention. As shown in the figure, an auxiliary vertebra 151a is provided on the main vertebra 150a by spot welding at a point P19 near one end thereof. Further, an auxiliary vertebra 151b is provided on the main vertebra 150b by spot welding at a point P20 near one end thereof. Note that the end portions of the auxiliary vertebras 151a and 151b have a shape in which the width gradually decreases. With such a shape, the elasticity of the wiper blade 1 can be adjusted.

  FIG. 13 is a cross-sectional view showing a vertebra according to another embodiment of the present invention. In the vertebra shown in FIGS. 4 and 9 to 12, the auxiliary vertebra is fixed by spot welding. In this embodiment, for example, when FIG. 4 is taken as an example, the main vertebra 110a and the auxiliary vertebra 111a are caulked members. It is also possible to fix it by caulking and bonding using 11.

  As described above, in addition to the vertebra shown in FIG. 4, the use of the vertebra shown in FIGS. 9 to 12 eliminates the need for a vertebra that changes the width, and makes it possible to make all the vertebras rectangular. In addition, a rectangular vertebra does not have a cutting process in the width direction, and if a wire with a round shape in the width direction (substantially elliptical in cross section) is formed into a strip shape by compression, the end face in the width direction does not become a cut surface. End machining is not required. For this reason, the manufacturing cost of a vertebra is reduced. And by providing various elasticity, it becomes possible to provide a wiper blade more suitable for the surface to be wiped.

It is a perspective view of one embodiment of the wiper blade of the present invention. It is AA arrow sectional drawing of FIG. It is a perspective view of one embodiment of the vertebra of the present invention. It is a top view of one embodiment of the vertebra of the present invention. It is a figure which shows typically the relationship between the main vertebra and the auxiliary vertebra. It is a figure which shows typically the relationship between the main vertebra and the auxiliary vertebra. It is a figure which shows the method of fixing a vertebra. It is a figure which shows the one end part of a wiper blade rubber. It is a top view which shows the vertebra of other embodiment of this invention. It is a top view which shows the vertebra of other embodiment of this invention. It is a top view which shows the vertebra of other embodiment of this invention. It is a top view which shows the vertebra of other embodiment of this invention. It is sectional drawing which shows the vertebra of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiper blade 2 Wiper blade rubber 2a Base part 2b Wiping part 3 Wiper arm 4 Wiper arm connection part 4a Grip part of wiper arm connection part 4c Hinge pin 5 Neck part 6 Fin 7 Lip part 8a, 8b Notch part 9 Stopper member 10 Wiping surface 11 Caulking member 100a, 100b Vertibra 110a, 110b, 120a, 120b, 130a, 130b, 140a, 140b, 150a, 150b Main vertebra 111a, 111b, 121a, 121b, 122a, 122b, 131a, 131b, 132a, 132b, 141a, 141b, 142a, 142b, 143a, 143b, 144a, 144b, 151a, 151b Auxiliary vertebra 100c Metal piece

Claims (22)

A main vertebra having a shape curved in the thickness direction in an unloaded state and imparting predetermined elasticity to the wiper blade rubber;
Auxiliary vertebra having a shape curved in the thickness direction in an unloaded state, and providing auxiliary elasticity to the wiper blade rubber in addition to the elasticity provided by the main vertebra,
The main vertebra and the auxiliary vertebra are arranged in the thickness direction along the longitudinal direction,
The auxiliary vertebra faces the position where the pressing force from the wiper arm acts at least part of the longitudinal direction,
The auxiliary vertebra is fixed to the main vertebra so that, when the main vertebra is elastically deformed in the thickness direction, at least one end portion in the longitudinal direction can slide a predetermined distance in the longitudinal direction with respect to the main vertebra. This is a wiper blade vertebra.   The auxiliary vertebra is fixed to the main vertebra near one end in the longitudinal direction, and the other end of the auxiliary vertebra is longitudinal with respect to the main vertebra when the main vertebra is elastically deformed in the thickness direction. The vertebra for wiper blade according to claim 1, which is slidable by a predetermined distance.   The auxiliary vertebra is fixed to the main vertebra at a substantially central portion in the longitudinal direction of the main vertebra, and at least one end portion of the auxiliary vertebra in the longitudinal direction is deformed when the main vertebra is elastically deformed in the thickness direction. 2. The wiper blade vertebra according to claim 1, wherein the vertebra is slidable by a predetermined distance in the longitudinal direction with respect to the main vertebra.   The wiper blade vertebra according to any one of claims 1 to 3, wherein the auxiliary vertebra is provided with a plurality of vertebra pieces arranged in a longitudinal direction. The auxiliary vertebra has a plurality of vertebra pieces arranged in the thickness direction along the longitudinal direction,
Among the plurality of vertebra bra pieces, the vertebra bra piece immediately above the main vertebra is slid at a predetermined distance in the longitudinal direction with respect to the main vertebra when at least one end in the longitudinal direction is elastically deformed in the thickness direction. Fixed to the main vertebra as possible,
When the vertical bar piece other than the vertical bar piece is elastically deformed in the thickness direction, at least one end in the longitudinal direction is slidable by a predetermined distance in the longitudinal direction with respect to the vertical bar piece. The wiper blade vertebra according to claim 1, wherein the wiper blade vertebra is fixed to the directly below vertebra bra piece.   The wiper blade vertebra according to claim 5, wherein the auxiliary vertebra includes a plurality of vertebra pieces arranged in a longitudinal direction.   Among the plurality of vertebra pieces, a vertebra piece just above the main vertebra is fixed to the main vertebra near one end in the longitudinal direction, and the other end of the vertebra is elastically deformed in the thickness direction of the main vertebra. The wiper blade vertebra according to claim 5 or 6, wherein the vertebra can be slid by a predetermined distance in the longitudinal direction with respect to the main vertebra.   Among the plurality of vertebra parts, the vertebra parts other than those directly above the main vertebra are fixed to the vertebra parts directly below in the vicinity of one end in the longitudinal direction. 8. The wiper blade vertebra according to claim 5, wherein the vertebra can be slid by a predetermined distance in the longitudinal direction with respect to the directly below vertebra bra piece when elastically deforming in the direction.   The wiper blade vertebra according to any one of claims 1 to 8, wherein the auxiliary vertebra has a second moment of section smaller than that of the main vertebra.   The wiper blade vertebra according to any one of claims 1 to 9, wherein the auxiliary vertebra is located on a surface side of the main vertebra which has a small curvature.   11. A wiper blade vertebra, comprising a pair of wiper blade vertebras according to claim 1 in parallel to the longitudinal direction. A pair of wiper blade vertebras according to any one of claims 2, 7, 8, 9 or 10 provided in parallel in the longitudinal direction,
One wiper blade vertebra is a first main vertebra and a first auxiliary vertebra,
When the other wiper blade vertebra is a second main vertebra and a second auxiliary vertebra,
The fixing portion of the first main vertebra and the first auxiliary vertebra and the fixing portion of the second main vertebra and the second auxiliary vertebra are the same end side in the longitudinal direction of the wiper blade vertebra A wiper blade vertebra. The wiper blade vertebra according to claim 11 or 12,
One wiper blade vertebra is a first main vertebra and a first auxiliary vertebra,
When the other wiper blade vertebra is a second main vertebra and a second auxiliary vertebra,
The first auxiliary vertebra and the second auxiliary vertebra are shifted by a predetermined amount from the longitudinal center positions of the first main vertebra and the second main vertebra to the end portions in the opposite directions, respectively. A wiper blade vertebra provided in   In the longitudinal direction of the first main vertebra and the second main vertebra, the total length of the portions where neither the first auxiliary vertebra nor the second auxiliary vertebra is provided, and the first Of the portion where either one of the auxiliary vertebra or the second auxiliary vertebra is provided, and the portion where both the first auxiliary vertebra and the second auxiliary vertebra are provided. 14. The wiper blade vertebra according to claim 13, wherein the total length is substantially the same.   The wiper blade vertebra according to any one of claims 1 to 14, wherein the fixing is performed by spot welding or caulking.   The wiper blade vertebra according to any one of claims 11 to 15, wherein the first main vertebra and the second main vertebra are connected at one end in a longitudinal direction.   The wiper blade according to any one of claims 1 to 16, wherein the main vertebra and the auxiliary vertebra are formed by forming a metal wire having a round end in the width direction into a band shape by compression processing. Vertibra.   18. The wiper blade vertebra according to claim 1, wherein the wiper blade rubber is mounted in a vertebra mounting groove formed in a longitudinal direction of the wiper blade rubber. A wiper blade rubber having a base for supporting a wiping portion for wiping the surface to be wiped, and a vertebra mounting groove formed in the longitudinal direction of both side surfaces of the base;
A wiper blade comprising the wiper blade vertebra according to any one of claims 1 to 18 mounted in the vertebra mounting groove.   20. The wiper blade according to claim 19, wherein side surfaces of the main vertebra and the auxiliary vertebra in the width direction do not protrude in the width direction from the base portion in the longitudinal direction.   21. The wiper blade according to claim 19 or 20, wherein a connecting portion for connecting a wiper arm to the base portion is mounted. The wiper blade according to claim 21, wherein the connecting portion is attached to a substantially central portion in a longitudinal direction of the base portion.

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