JP2020026147A - Blade rubber assembly - Google Patents

Abstract

To provide a blade rubber assembly which can prevent separation between a blade rubber and backing.SOLUTION: A blade rubber assembly includes a blade rubber which is pressed to a surface to be wiped by a wiper arm and wipes the surface to be wiped and first and second backing rails which are mounted on the blade rubber and elastically restores the blade rubber against the pressing force from the wiper arm, in which the blade rubber assembly further includes a fixing component which fixes the blade rubber and the first and second backing rails.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a blade rubber assembly, and more particularly to a blade rubber assembly in which a backing (a pair of backing rails) is mounted on a blade rubber.

  Generally, a wiper arm includes an arm head fixed to a vehicle, an arm piece capable of holding a wiper blade for wiping a windshield, a retainer connected via the arm piece, and an arm arm. And a bearing device for pivotally attaching to the head. The arm head has a screw hole at one end so that the arm head can be fixed to the vehicle body through a bolt, and a hinge portion is provided at the other end on the opposite side.

  The wiper blade includes a blade rubber assembly for wiping a windshield, and a lever assembly for holding the blade rubber assembly to the arm piece so as to be held. The lever assembly includes a plurality of lever members such as a primary lever, a secondary lever, and a yoke.

In recent years, wiper blades (so-called design blades) having improved appearance by covering a lever member with a cover member have been used.
Japanese Patent No. 4227052 proposes such a design blade.

  FIG. 1 shows a part of a wiper blade 1 proposed in Japanese Patent No. 4227052. As shown in the figure, the wiper blade 1 includes a primary lever 3 and a secondary lever 4 as a lever assembly constituting a supporting portion for supporting the blade rubber 2. Further, a center cover part 5 and a side cover part 6 are provided as cover members for covering these lever members 3 and 4.

  The secondary lever 4 is rotatably connected to the primary lever 3 via a connecting pin 7. The primary lever 3 has an extension 8 extending to the distal end side adjacent to the connection pin 7, and a connection hole 9 is formed in the extension 8. The side cover 6 is rotatably connected to the primary lever 3 by fitting the connection projection 10 of the side cover 6 into the connection hole 9. The tip 11 of the side cover 6 is attached to the blade rubber 2.

  With such a configuration, in the wiper blade 1, when the blade rubber 2 is deformed as the wiping operation progresses, the side cover portion 6 rotates with respect to the primary lever 3 and follows the deformation of the blade rubber 2. It has become.

  On the other hand, in order to reduce the number of parts to reduce the cost and improve the appearance, the primary lever is made of a material (for example, resin) for the cover member, and the primary lever is omitted by omitting the secondary lever and the yoke. Only the lever assembly is configured. The blade lever assembly is supported only by the primary lever.

  In this structure, the secondary lever and the yoke are omitted as described above, and the portion supporting the blade rubber assembly is reduced to two places in order to further reduce the cost. Specifically, two support portions are provided separately from each other on the primary lever, and the two support portions support the blade rubber assembly.

Patent No. 4227052

  Generally, when a wiper blade is applied to a windshield having a larger area, it is necessary to increase a lengthwise distance of the wiper blade. Therefore, in the wiper blade having the two-point support structure, the longer the distance in the length direction, the longer the distance between the two support portions. In this case, there is a problem in that the blade rubber is likely to be detached from the backing between the two support portions having a widened distance.

  Specifically, as shown in FIGS. 2A and 2B, when the blade rubber 12 freezes on the windshield 13 in winter, the blade rubber 12 is separated from the windshield 13 in order to erect a retainer. Then, in a state where the blade rubber 12 is fixed to the windshield 13 by freezing, a force acts on the windshield 13 to forcibly peel the blade rubber in the vertical direction. In this case, the backing 14 attached to the blade rubber 12 moves upward together with the lever assembly and the retainer, and the blade rubber 12 comes off the backing 14 in the vertical direction (FIGS. 2A to 2B). Will be in the state as shown in the figure).

  Alternatively, when the blade rubber freezes on the windshield, when the wiper is operated, the blade rubber frozen on the windshield stays in place, and the frozen blade rubber moves in the lateral direction (the direction in which the wiper operates relative to the windshield 13). ) Will be disengaged from the backing and only the backing and lever assembly will move.

  For this reason, in a wiper blade adopting a configuration in which a blade rubber assembly is supported only by a primary lever having a two-point support structure, only a wiper blade having a short length in the longitudinal direction has been put to practical use, and a larger area is required. It was difficult to apply to wide windshields.

  The present invention has been made in view of the above problems, and provides a blade rubber assembly that does not come off the backing even when the blade rubber freezes on the windshield.

The present invention
A blade rubber assembly, wherein the blade rubber assembly comprises:
A blade rubber pressed against the surface to be wiped by the wiper arm to wipe the surface to be wiped;
First and second backing rails attached to the blade rubber and elastically returning the wiper rubber against a pressing force from the wiper arm,
The blade rubber assembly further includes:
An object of the present invention is to provide a blade rubber assembly including a fixing component for fixing the wiper rubber and the first and second backing rails.

  According to the present invention, since the wiper rubber and the first and second backing rails are fixed by the fixing component, even if the blade rubber freezes on the windshield, the blade rubber is prevented from coming off the backing. it can.

FIG. 1 is an exploded side view showing a part of a conventional wiper blade. FIG. 2 is an explanatory diagram of a blade rubber assembly according to the related art. FIG. 3 is a perspective view of a part of the wiper blade according to one embodiment of the present invention, and is a cross-section taken in a direction crossing a longitudinal direction thereof. FIG. 4 is an enlarged perspective view of a part of FIG. FIG. 5 is a cross-sectional view of the blade rubber assembly shown in FIG. FIG. 6 is a front view of the needle component as the fixing component shown in FIGS.

Hereinafter, an example in which the blade rubber assembly according to one embodiment of the present invention is applied to a wiper blade will be described with reference to FIGS.
The wiper blade 20 includes a blade rubber assembly 22 for wiping a surface to be wiped (for example, a windshield of an automobile) and a lever for holding the blade rubber assembly 22 to a retainer (not shown) of a wiper arm. And an assembly 24.

The blade rubber assembly 22 includes a blade rubber 26 for wiping a surface to be wiped, and backings 28 and 30 mounted on the blade rubber 26.
The blade rubber 26 is pressed against a surface to be wiped such as a windshield of an automobile by a wiper arm, and wipes rain or the like attached to the surface to be wiped. The blade rubber 26 includes a lip 27 that can abut the surface to be wiped and a base 29 to which the lip is tiltably connected (see FIG. 5).

  On one first side portion 36 of the base portion 29 of the blade rubber 26, an elongated first groove portion 32 is formed on the upper side along the longitudinal direction of the base portion. An elongated second groove 34 is formed along the longitudinal direction of the base 29 on the other second side 38 on the opposite side of the base 29. In this way, the first groove 32 and the second groove 34 are arranged substantially opposite to each other via the center of the blade rubber 26.

  Further, a third groove 40 and a fourth groove 42 are formed in the base 29 below the first groove 32 and the second groove 34 along the longitudinal direction thereof. The third groove portion 40 is formed on one first side portion 36 of the base portion 29, and is provided on the lip 27 side with respect to the first groove portion 32. The fourth groove 42 is formed on the opposite second side 38 of the base 29, and is provided on the lip 27 side with respect to the second groove 34. In this way, the third groove portion 40 and the fourth groove portion 42 are substantially opposed to each other via the center of the blade rubber 26.

  The lever assembly 24 includes a primary lever. That is, the wiper blade 20 is not provided with a secondary lever, a yoke, or the like in order to reduce the number of parts and reduce costs, and a lever assembly is constituted only by the primary lever 24. The primary lever 24 is formed from a material (for example, resin) used for the cover member in order to improve its appearance.

  As shown in FIG. 3, a clip 23 formed separately from the primary lever 24 is arranged in the primary lever 24. The clip 23 is a connecting member for connecting the wiper blade 20 to a wiper arm (not shown).

  The primary lever 24 has a two-point support structure on the side of the primary lever facing the blade rubber assembly 22. The two-point support structure includes a pair of first support portions 50 (see FIG. 3) and a pair of second support portions (not shown).

  The first support part 50 includes a first claw part 51 and a second claw part (not shown) formed to face the first claw part 51. The first claw portion 51 is provided at a lower end (blade rubber assembly side) of one first side portion 52 of the primary lever 24. The second claw (not shown) is provided at the lower end of the second side 54 opposite to the primary lever 24. The first claw 51 is press-fitted into the third groove 40, so that the first claw 51 is firmly fitted into the third groove 40. Similarly, the second claw part is fitted into the fourth groove part 42 firmly by being press-fitted into the fourth groove part 42.

  The second support section (not shown) is provided apart from the first support section 50 along the longitudinal direction of the primary lever 24. The second support portion also has the same configuration as the first support portion 50, and includes a third claw portion (not shown) and a fourth claw portion formed to face the third claw portion. (Not shown). The third claw portion is provided at a lower end of one first side portion 52 of the primary lever 24. The fourth claw portion is provided at the lower end of the second side portion 54 opposite to the primary lever 24. The third claw is securely fitted into the third groove 40 by being press-fitted into the third groove 40. The fourth claw is press-fitted into the fourth groove 42, so that the fourth claw is firmly fitted into the fourth groove 42.

  As described above, the first and third claws are fitted into the third groove 40, and the second and fourth claws are fitted into the fourth groove 42, whereby the blade rubber assembly 22 is It is firmly fixed to the primary lever 24.

  The backings 28, 30 attached to the blade rubber 26 include a first backing rail 28 and a second backing rail 30. The first backing rail 28 and the second backing rail 30 are for elastically returning the blade rubber against the pressing force from the wiper arm. The first backing rail 28 is inserted into the first groove 32 and is held in the first groove 32. The second backing rail 30 is inserted into the second groove 34 and is held in the second groove 34.

  The blade rubber assembly 22 further includes a fixing component 100 for fixing the blade rubber 26, the first backing rail 28, and the second backing rail 30. The fixing part 100 penetrates the base 29 of the blade rubber 26 and the first and second backing rails 28 and 30 to fix the first backing rail 28 and the second backing rail 30 to the blade rubber 26. are doing. More specifically, the fixing component 100 fixes the first backing rail 28 and the second backing rail 30 to the base 29 of the blade rubber 26.

  The fixed component 100 is formed of a substantially U-shaped needle component. The needle component 100 is a component integrally formed, and includes a columnar main body 102, a first needle 104 extending from one end of the main body in a direction substantially orthogonal to the main body 102, A second needle portion 106 is provided when extending from the other end of the base member 102 in a direction substantially orthogonal to the main body portion 102 (see FIG. 6). Therefore, the first needle portion 104 and the second needle portion 106 extend substantially parallel to each other. The needle component 100 formed in a substantially U-shape is inserted into the blade rubber 26 from above the blade rubber 26 in the figure with the first and second backing rails 28 and 30 attached to the blade rubber 26. , The first backing rail 28 and the second backing rail 30 are fixed to the blade rubber 26.

  The main body 102 of the needle component 100 extends in a direction crossing the longitudinal direction of the blade rubber 26, and is pressed or abutted on the top surface 31 of the base 29. A first needle 104 extends through the top surface 31 of the blade rubber base 29 and the first backing rail 28. Also, a second needle 106 extends through the top surface 31 of the blade rubber base 29 and the second backing rail 30.

  The first groove portion 32 formed on the upper side of the blade rubber 26 has an arc-shaped first side surface portion 60 protruding inward, and a first upper surface portion 62 extending outward from the upper end of the first side surface portion 60. And a first lower surface portion 64 extending outward from the lower end of the first side surface portion 60 substantially parallel to the first upper surface portion 62. The first groove 32 has a first opening 66 that extends in an elongated shape along the first groove and opens outward. The first backing rail 28 disposed in the first groove 32 has an outer end protruding outward beyond the first opening 66. However, the outer end of the first backing rail 28 may not project outward from the first opening 66. The inner end of the first backing rail 28 has an arc shape protruding inward in accordance with the shape of the first side surface portion 60. In the present embodiment, since the first side surface portion 60 is made to protrude inward and is curved, the contact area between the first side surface portion 60 and the inner end of the first backing rail 28 is increased, and the length of the first side surface portion 60 with respect to the longitudinal direction is increased. Increased contact resistance. In addition, since the first side surface portion 60 and the inner end of the first backing rail 28 are protruded inward, the first backing rail 28 is accordingly moved from the portion through which the first needle portion 104 penetrates. The distance to the inner end thereof is increased, so that the first backing rail 28 is less likely to drop laterally from the first opening 66. However, it is not always necessary to make the first side surface portion 60 protrude inward and bend, and the first side surface portion 60 may be a vertical surface.

  The second groove portion 34 formed on the upper side of the blade rubber 26 has an arc-shaped second side surface portion 68 protruding inward, and the second groove portion 34 extends from the upper end of the second side surface portion to the side opposite to the first upper surface portion 62. A second upper surface portion 70 extending outwardly, and a second upper surface portion extending outward from the lower end of the second side surface portion 68 on a side opposite to the first lower surface portion 64 and substantially parallel to the second upper surface portion 70. 2 and the lower surface 72. The second groove 34 has a second opening 74 that extends long along the second groove and opens outward. The second backing rail 30 arranged in the second groove 34 has an outer end protruding outward beyond the second opening 74. However, the outer end of the second backing rail 30 may not project outside the second opening 74. The inner end of the second backing rail 30 has an arcuate shape protruding inward according to the shape of the second side surface portion 68. In the present embodiment, since the second side surface 68 protrudes inward and is curved, the contact area between the second side surface 68 and the inner end of the second backing rail 30 is increased, and the length in the longitudinal direction is increased. Increased contact resistance. In addition, since the second side surface portion 68 and the inner end of the second backing rail 30 protrude inward, a portion corresponding to the second side portion 68 from the portion of the second backing rail 30 through which the second needle portion 106 penetrates, The distance to the inner end of the second backing rail 30 is increased, so that the second backing rail 30 is less likely to drop laterally from the second opening 74. However, it is not always necessary to make the second side surface 68 protrude inward to be curved, and the second side surface 68 may be a vertical surface.

  The first needle portion 104 penetrates the first upper surface portion 62, further penetrates the first backing rail 28, and pierces the first lower surface portion 64. The second needle 106 penetrates the second upper surface 70, penetrates the second backing rail 30, and pierces the second lower surface 72.

  The first needle portion 104 has a first body portion 108 extending from one end of the main body portion 102, and a first body portion 108 provided on the distal end side of the first body portion 108 and integrally formed with the first body. One arrowhead 110 is provided.

  In the present embodiment, the first arrowhead portion 110 is formed in a substantially conical shape, and its distal end side protrudes thinly. The first arrowhead 110 is formed integrally with the first arrowhead base 112 connected to the first body 108 and provided at the tip of the first arrowhead base. And a first arrowhead body 114. At the tip of the first arrowhead body 114, a first wedge-shaped portion 114a formed at an acute angle is provided. The first wedge-shaped portion 114a penetrates deeply into the first lower surface portion 64, and is buried in the first lower surface portion 64.

  At the rear end of the first arrowhead base 112, a first slip-off preventing portion 112a is formed. In the present embodiment, the first detachment preventing portion 112a is formed in a flat shape, and is located on substantially the same plane as the surface of the first lower surface portion 64. The first slip-off preventing portion 112a may pierce deeper into the first lower surface together with the first wedge-shaped portion 114a.

  The second needle portion 106 is provided at a distal end side of the second body portion 116 extending from the other end of the main body portion 102 and is formed integrally with the second body portion 116. And a second arrowhead 118.

  The second arrowhead portion 118, like the first arrowhead portion 110, is formed in a substantially conical shape, and its distal end protrudes thinly. The second arrowhead portion 118 is formed integrally with the second arrowhead base portion 120 connected to the second body portion 116 and provided at the distal end side of the second arrowhead base portion. And a second arrowhead body 122. At the tip of the second arrowhead body 122, a second wedge-shaped portion 122a formed at an acute angle is provided. The second wedge-shaped portion 122a penetrates deeply into the second lower surface portion 72, and is buried in the second lower surface portion 72.

  At the rear end of the second arrowhead base 120, a second detachment prevention portion 120a is formed. In the present embodiment, the second detachment preventing portion 120a is formed in a flat shape, and is located on substantially the same plane as the surface of the second lower surface portion 72. The second detachment preventing portion 120a may be pierced deeper into the second lower surface together with the second wedge-shaped portion 122a.

  As described above, in the present embodiment, since the blade rubber 26 and the first and second backings 28 and 30 are fixed by the needle part 100, the blade rubber 26 and the first and second backings 28 and 30 are It becomes like an integrated single part and can be moved integrally. Therefore, even when used for wiping a portion where the curvature changes, such as a windshield of an automobile, the blade rubber 26, the backings 28, 30 and the needle component 100 are vertically integrated with respect to the windshield surface or left and right. It can move integrally like a part.

  Further, in the present embodiment, almost the entire needle component 100, more specifically, the first needle portion 104 and the second needle portion 106 enter the blade rubber 26, and the side portions of the blade rubber. And does not protrude from the lower part. Therefore, even when used on a surface to be wiped whose curvature changes greatly (for example, a windshield of an automobile), the needle component 100 does not interfere with the surface to be wiped.

  In the case where the blade rubber 26 freezes on the windshield and the freezing of the blade rubber 26 to the windshield occurs, when a force is applied to the needle component 100 in a direction in which the needle component 100 comes off from the blade rubber assembly 22, the present embodiment is performed. In the embodiment, the flat surfaces of the first and second slip-off preventing portions 112a and 120a are brought into pressure contact with the lower surfaces of the first and second backing rails 28 and 30, respectively. As described above, by the pressure contact between the surfaces, a large reaction force acts in a direction that hinders the needle component 100 from coming off, and the needle component 100 is reliably prevented from coming off.

  Therefore, in both the vertical direction in which the blade rubber 10 is separated from the windshield 11 to raise the retainer and the horizontal direction in which the wiper blade operates, the blade rubber 26 and the backings 28, 30 are formed by the needle component 100. Since the blade rubber is firmly fixed, it is possible to reliably prevent the blade rubber from falling off from the backing.

  A first hole 130 is formed in the first backing rail 28 along the direction in which the first needle portion 104 extends. The first needle portion 104 extends through a first hole 130 formed in the first backing rail 28.

  A second hole 132 is formed in the second backing rail 30 along the direction in which the second needle portion 106 extends. The second needle 106 extends through a second hole 132 formed in the second backing rail 30.

  It is desirable that the diameter of the first hole 130 be smaller than the diameter of the first needle portion 104 in order to enhance the effect of preventing detachment. Similarly, the diameter of the second hole 132 is desirably smaller than the diameter of the second needle 106.

  In the present embodiment, since the first and second holes are formed, the first needle portion 104 and the second needle portion 106 can be smoothly transferred to the first backing as compared with the case where these holes are not provided. The rail 28 and the second backing rail 30 can pass therethrough. For this reason, attachment of the needle component 100 as a fixed component to the blade rubber assembly 22 becomes easy.

However, the first and second holes are not necessarily required, and may be penetrated without any holes at the time of attachment.
In the present embodiment, the first and second slip-off preventing portions are formed so as to be substantially flat. However, the first and second slip-off preventing portions are tapered toward the centers of the first and second arrowhead bases. May be formed.

In the present embodiment, the main body 102 of the needle component is formed in a column shape, but the present invention is not limited to this, and may be formed in a plate shape. Having described, it will be readily apparent to those skilled in the art that various changes or modifications may be made to the illustrated embodiments without substantially departing from the novel teachings and advantages of the present invention. Would. Therefore, it is intended that such modified or improved embodiments are also included in the technical scope of the present invention.

  The above embodiments may be arbitrarily combined.

DESCRIPTION OF SYMBOLS 1 ... Wiper blade 2 ... Blade rubber 3 ... Primary lever 4 ... Secondary lever 5 ... Center cover part 6 ... Side cover part 7 ... Connection pin 8 ... Extension part 9 ... Connection hole 10 ... Connection protrusion 13 ... Front glass 11 ... Tip part 12 ... blade rubber 14 ... backing 20 ... wiper blade 22 ... blade rubber assembly 23 ... clip 24 ... primary lever (lever assembly)
26 blade rubber 27 lip 28 first backing rail 29 base 30 second backing rail 31 top surface 32 first groove 34 second groove 36 first side 38 2nd side part 40 ... 3rd groove part 42 ... 4th groove part 50 ... 1st support part 51 ... 1st claw part 52 ... 1st side part 54 ... 2nd side part 60 ... 1st Side portion 62 First upper portion 64 First lower portion 66 First opening 68 Second side portion 70 Second upper portion 72 Second lower portion 74 Second opening Part 100: Needle parts (fixed parts)
Reference numeral 102: main body 104: first needle 106: second needle 108: first body 110: first arrowhead 112: first arrowhead base 114: first arrowhead main body 116: second Body part 118 ... second arrowhead part 120 ... second arrowhead base 122 ... second arrowhead body 130 ... first hole 132 ... second hole 112a ... first disengagement prevention part 114a ... first wedge-shaped Part 120a: second detachment prevention part 122a: second wedge-shaped part

Claims (14)

A blade rubber assembly, wherein the blade rubber assembly comprises:
A blade rubber pressed against the surface to be wiped by the wiper arm to wipe the surface to be wiped;
First and second backing rails attached to the blade rubber and elastically returning the blade rubber against a pressing force from the wiper arm,
The blade rubber assembly further includes:
A blade rubber assembly comprising a fixing part for fixing the blade rubber and the first and second backing rails. The blade rubber assembly according to claim 1,
The blade rubber includes a lip portion that can be brought into contact with the surface to be wiped, and a base portion to which the lip portion is tiltably connected.
On one side of the base, a first elongated groove is formed along the longitudinal direction of the base,
On the other side of the base, an elongated second groove is formed along the longitudinal direction of the base,
The first backing rail is inserted into the first groove, and the first backing rail is held in the first groove;
The second backing rail is inserted into the second groove, and the second backing rail is held in the second groove;
The fixing component may penetrate a base of the blade rubber and the first and second backing rails to fix the blade rubber to the first and second backing rails. Blade rubber assembly. The blade rubber assembly according to claim 2,
The fixed component includes a substantially U-shaped needle component,
The needle component includes a main body, a first needle extending from one end of the main body, and a second needle extending substantially parallel to the first needle from the other end of the main body. Department and
The main body of the needle component is in contact with the top surface of the base,
A first needle penetrating the top surface of the base of the blade rubber and the first backing rail;
A blade rubber assembly wherein a second needle penetrates a top surface of a base of the blade rubber and the second backing rail. The blade rubber assembly according to claim 3,
The first groove portion includes a first side surface portion, a first upper surface portion extending from an upper end of the first side surface portion,
A first lower surface extending substantially parallel to the first upper surface from a lower end of the first side surface;
The first groove has a first opening extending in an elongated shape along the first groove,
The other side of the base is provided on the opposite side to one side of the base,
The second groove,
A second side portion;
A second upper surface portion extending from an upper end of the second side surface portion to a side opposite to the first upper surface portion;
A second lower surface extending from a lower end of the second side surface to a side opposite to the second lower surface and substantially parallel to the second upper surface;
The second groove has a second opening extending long along the second groove,
The first needle portion penetrates the first upper surface portion, penetrates the first backing rail, and pierces the first lower surface portion;
A blade rubber assembly, wherein the second needle portion penetrates the second upper surface portion, penetrates the second backing rail, and pierces the second lower surface portion. The blade rubber assembly according to claim 4,
The first needle portion includes a first body portion extending from one end of the main body portion, and a first body portion provided on a tip end side of the first body portion and integrally formed with the first body portion. With the arrowhead of
The first arrowhead portion includes a first arrowhead base portion, and a first arrowhead body provided at a tip of the first arrowhead base portion and integrally formed with the first arrowhead base portion,
A first wedge-shaped portion is formed at a tip of the first arrowhead body,
At the rear end of the first arrowhead base, a first detachment prevention portion is formed,
The blade rubber assembly according to claim 1, wherein said first wedge-shaped portion and said first removal prevention portion are pierced into said first lower surface portion. The blade rubber assembly according to claim 5,
The second needle portion includes a second body portion extending from the other end of the main body portion, and a second body portion provided on a tip side of the second body portion and integrally formed with the second body portion. With the arrowhead of
The second arrowhead includes a second arrowhead base, and a second arrowhead body provided at a tip of the second arrowhead base and integrally formed with the second arrowhead base,
A second wedge-shaped portion is formed at the tip of the second arrowhead body,
At the rear end of the second arrowhead base, a second detachment prevention portion is formed,
The blade rubber assembly, wherein the second wedge-shaped portion and the second detachment prevention portion are pierced into the second lower surface portion. The blade rubber assembly according to claim 4,
A first hole is formed in the first backing rail along a direction in which the first needle portion extends,
The first needle portion extends through a first hole formed in the first backing rail;
A second hole is formed in the second backing rail along a direction in which the second needle portion extends,
The blade rubber assembly according to claim 2, wherein the second needle portion extends through a second hole formed in the second backing rail. The blade rubber assembly according to claim 5,
The blade rubber assembly according to claim 1, wherein the first stopper portion is formed substantially flat. The blade rubber assembly according to claim 5,
The blade rubber assembly according to claim 1, wherein the first detachment preventing portion is tapered toward a center of the first arrowhead base. The blade rubber assembly according to claim 6,
The blade rubber assembly according to claim 1, wherein the second detachment preventing portion is formed substantially flat. The blade rubber assembly according to claim 6,
A blade rubber assembly, wherein the second slip-off preventing portion is tapered toward the center of the second arrowhead base. The blade rubber assembly according to claim 3,
A blade rubber assembly, wherein a main body of the needle component is formed in a column shape. The blade rubber assembly according to claim 3,
A blade rubber assembly, wherein a main body of the needle component is formed in a plate shape. A wiper device, wherein the wiper device comprises:
A wiper arm,
A wiper device, comprising: a blade rubber assembly supported by the wiper arm, the blade rubber assembly according to any one of claims 1 to 13.

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