JP4638930B2 - Connecting member for wiper blade - Google Patents

Description

  The present invention relates to a coupling member used for coupling a wiper arm and a wiper blade in a wiper device.

    Some wiper devices connect a wiper arm and a wiper blade by providing a pin hole of a coupling member provided in the wiper blade and fitting the coupling pin into the pin hole.

  FIG. 17 shows an example of a wiper arm having such a coupling pin. As shown in the drawing, the wiper arm 80 includes a coupling pin 81 extending perpendicularly to the longitudinal direction thereof. The coupling pin 81 is attached to the pin hole of the coupling member provided in the wiper blade. The connecting pin 81 attached to the pin hole is fixed so as not to come out of the pin hole by a fixing mechanism provided in the connecting member, for example, a mechanism fitted to the small diameter portion 82 near the center of the connecting pin 81. Thereby, a wiper arm and a wiper blade are connected.

  Other examples of the wiper arm provided with the coupling pin include those disclosed in International Publication 00 / 73111A1 (Patent Document 1) and International Publication 00 / 73113A1 (Patent Document 2). FIG. 18 shows a wiper arm 60 of the type disclosed in these publications. The coupling pin 61 of the wiper arm 60 extends from the side plate 66 near the tip of the arm body 60 in a direction substantially perpendicular to the arm body 60. In addition, the wiper arm 60 is provided with an engaging portion 64 that is adjacent to the coupling pin 61 and extends substantially in parallel to fix the coupling pin 61 in a state of being fitted in the pin hole of the coupling member. The engaging portion 64 is a substantially L-shaped plate member as a whole, and includes a horizontal plate 64A extending from the arm body 32 substantially parallel to the coupling pin 61, and an engaging member extending vertically from the tip of the horizontal plate 64A. It consists of a vertical plate 64B.

FIG. 19 shows a state where the wiper arm 60 is coupled to the coupling member 70 of the wiper blade. As illustrated, the coupling pin 61 of the wiper arm 60 is fitted into the pin hole of the coupling member 70. At the same time, the horizontal plate 64A of the engaging portion 64 of the wiper arm 60 is disposed on the upper surface 71 of the coupling member 70, and the vertical plate 64B holds the side surface 72 of the coupling member 70. This prevents the coupling pin 61 from coming off from the coupling member 70. Note that the insertion of the coupling pin 61 into the pin hole is performed in a state where the wiper arm 60 is tilted so that the engaging portion 64 of the wiper arm 60 does not interfere with the coupling member 70.
International Publication No. 00 / 73111A1 International Publication 00 / 73113A1

  However, such conventional coupling structures have the following problems. First, when a wiper arm 80 of the type shown in FIG. 17 is used and a fixing mechanism that fits into the small diameter portion 82 of the coupling pin 81 is used, the fixing mechanism tends to be complicated, and the retaining mechanism has a small diameter. Since it is made in the step part of the end of the part 82, sufficient connection strength may not be obtained.

  On the other hand, when the wiper arm 60 with the engaging portion 64 as shown in FIG. 18 is used, there is the following problem. First, when the wiper device is operated, the wiper arm 60 and the wiper blade perform a slight rotation operation around the coupling pin 61, so that the vertical plate 64 </ b> B of the engaging portion 64 rubs against the side surface 72 of the coupling member 70. For this reason, there exists a possibility that a rubbing noise may generate | occur | produce or the coating film on the surface of the coupling member 70 may wear and rust may generate | occur | produce. Further, since the rotation of the wiper arm 60 and the wiper blade is not restricted, for example, when the wiper arm is made to stand up so that the wiper blade is separated from the surface to be wiped (for example, the glass surface of an automobile) (so-called lockback). If the wiper arm 60 and the wiper blade have a large rotation angle and the wiper arm 60 is brought down to its original state as it is, the wiper blade may hit the surface to be wiped at an inappropriate angle.

  Further, in the conventional coupling structure, the wiper arm 80 is a coupling member that can be adapted to the small diameter portion 82 of the coupling pin 81, and the wiper arm 60 is a coupling member that can be adapted to the engaging portion 64. The other party that can be adapted is limited depending on the type of, and lacks versatility.

  The present invention has been made paying attention to such problems, and can be applied to various wiper arms in a coupling member that couples a coupling pin type wiper arm and a wiper blade, and can be reliably connected with a simple configuration. It is an object to provide a connecting member that can be used. It is another object of the present invention to provide a coupling member that can suppress the generation and wear of scratching noise during operation of the wiper device, and can appropriately regulate the rotation of the wiper arm and the wiper blade.

  The present invention relates to a wiper blade coupling member used for coupling a wiper arm having a coupling pin and a wiper blade, wherein the coupling member body has a pin hole into which the coupling pin is inserted and is attached to the wiper blade body. And a detachment preventing member that sandwiches the wiper arm between the coupling member main body and restricts the movement of the wiper arm in the detachment direction of the pin hole of the coupling pin.

The drop-off prevention member may sandwich the wiper arm near the axis of the pin hole.
The drop-off prevention member is rotatably supported with respect to the coupling member main body, and allows a detachment prevention position for sandwiching the wiper arm between the coupling member main body and attachment / detachment of the coupling pin to the pin hole. The retraction position to be taken may be taken.

The drop-off prevention member may be capable of rotating approximately 90 degrees on both sides of the wiper blade body.
You may provide the rotation control means which hold | maintains the rotation position with respect to the said coupling member main body of the said drop-off prevention member in the said drop-off prevention position.

  The drop-off prevention member may be disposed adjacent to the wiper arm so that at least a part thereof crosses the wiper arm, and restricts the rotation angle of the wiper arm and the wiper blade.

  The drop-off prevention member is a U-shaped member comprising a horizontal portion and a pair of vertical portions extending substantially at right angles from both sides of the horizontal portion, and the horizontal portion is disposed through the coupling member body. The wiper arm may be sandwiched between one of the pair of vertical portions and the coupling member body while being rotatable about an axis parallel to the penetrating direction.

The arm drop prevention member may be movable in the penetrating direction of the horizontal portion with respect to the coupling member main body.
The wiper arm is sandwiched between the arm drop-off prevention member and the coupling member main body by abutting the horizontal portion on at least a part of the portion of the coupling member main body through which the U-shaped member passes. While being fixed at the drop-off prevention position, an elastic protrusion may be provided that is elastically deformed to allow rotation from the drop-off prevention position or a retraction position that allows the coupling pin to be attached to and detached from the pin hole.

  When coupled with a wiper arm having an engagement portion composed of a horizontal plate and a vertical plate that engage with the wiper blade when coupled to the wiper blade, the coupling member body comes off the engagement portion of the wiper arm. It may be arranged at a different position.

  The pin hole may be provided in the vicinity of the base end of the coupling member main body, and the engaging portion of the wiper arm may be disposed at a position disengaged from the base end side of the coupling member main body.

  According to the present invention, the wiper arm (for example, the wiper arm 60) has a coupling member body in a state where the coupling pin (for example, the coupling pin 61) is mounted in the pin hole (for example, the pin holes 14, 42, 52). (For example, the coupling member main bodies 11, 41, 51) and a drop-off prevention member (for example, the L-shaped members 17, 44, the U-shaped member 53), and the pin hole of the coupling pin falls in the falling direction. Since the movement of the connecting pin is limited, the connecting pin is prevented from falling out of the pin hole. Moreover, since the coupling member of the present invention includes a drop-off preventing member and does not require a configuration for preventing the coupling pin from coming off on the wiper arm side, it can be widely applied to wiper arms having different shapes.

  If the fall-off prevention member sandwiches the wiper arm near the axis of the pin hole, even if the wiper arm rotates with respect to the wiper blade during operation of the wiper device, the contact portion of the wiper arm with the coupling member (for example, The base end portion 61B and the coupling member side surface 66) only slightly rotate around the axis with respect to the contact portion (for example, the vertical plate 17C and the side surface 11C of the coupling member main body 11) of the coupling member with respect to the wiper arm. Yes, the range of movement is small. Therefore, it is possible to significantly reduce the wear of the coupling member and the generation of scratch noise.

  The drop-off preventing member (for example, a U-shaped member 53) is a U-shaped member including a horizontal portion and a pair of vertical portions extending substantially at right angles from both sides of the horizontal portion, The coupling member main body is disposed so as to be rotatable about an axis parallel to the penetrating direction, and one of the pair of vertical portions sandwiches the wiper arm between the coupling member main body. In this case, the wiper arm can be coupled to both side surfaces of the coupling member body by allowing the drop-off prevention member to be movable in the penetrating direction of the horizontal portion with respect to the coupling member body. it can.

  If a rotation restricting means (for example, the rotation restricting portions 19 and 46 and the elastic protrusion 55) that holds the drop-off prevention member at the drop-off prevention position is provided, the drop-off prevention member is appropriately held at the drop-off prevention position, and the pin hole It is possible to reliably prevent the coupling pin from falling off.

  If a part of the fall-off prevention member is disposed adjacent to the wiper arm so as to cross the wiper arm, when the wiper blade rotates with respect to the wiper arm, the fall-off prevention member of the wiper arm and the wiper blade Since the contact and the further rotation are limited, the rotation angle of the wiper blade can be limited to an appropriate range.

  When the coupling member main body is disposed at a position away from the engagement portion when coupled to the wiper arm having the engagement portion, the engagement portion and the coupling member do not interfere with each other. Therefore, the coupling member of the present invention can be coupled to the wiper arm having the engaging portion without any problem.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a wiper blade provided with a coupling member 10 according to a first reference embodiment related to the present invention. As shown in the drawing, the wiper blade includes a wiper blade body 1 and a coupling member 10. The wiper blade main body 1 includes a support portion 2 configured by combining a plurality of lever-like members, for example, and supports the long blade rubber 3 by the support portion 2. The coupling member 10 is fixed to the upper side of the support portion 2.

  As shown in FIGS. 2 to 4, the coupling member 10 includes a box-shaped coupling member main body 11. On both sides of the base end 11 </ b> A side of the coupling member main body 11, a pair of holding portions 12 that extend downward are provided. These sandwiching portions 12 are arranged so as to sandwich the support portion 2 of the wiper blade main body 1 from both sides, and are fixed to the support portion 2 by rivets 13.

  The coupling member body 11 includes a pin hole 14 above the holding portion 12. The pin hole 14 penetrates the coupling member main body 11 from the side surface to the side surface (or opens only on one side) near the base end 11A, and extends in a direction perpendicular to the longitudinal direction of the wiper blade main body 1. . The wiper arm coupling pin is rotatably inserted into the pin hole 14, whereby the wiper arm is coupled to the coupling member 10. Further, an arm contact portion 15 is provided in the vicinity of the opening portion of the pin hole 14 on the side surface 11C of the coupling member main body. The arm abutment portion 15 is a surface with which the coupling member side surface 66 (see FIG. 5) of the wiper arm 60 abuts when the coupling pin is inserted. The arm abutting portion 15 regulates the insertion amount of the coupling pin and between the wiper arm and the wiper blade. Functions as a sliding surface.

  An L-shaped member 17 is attached to the upper surface 11 </ b> B of the coupling member main body 11 via an attachment plate 16 so as to be positioned substantially directly above the pin hole 14. The L-shaped member 17 is a plate-like member bent substantially at a right angle at the bent portion 17A, and includes a horizontal portion 17B on the proximal side with respect to the bent portion 17A and a vertical portion 17C on the distal side with respect to the bent portion 17A. It has.

  The horizontal portion 17B of the L-shaped member 17 is arranged in parallel to the pin hole 14 and the longitudinal direction of the wiper blade main body 1, and rotates at the base end with respect to the coupling member main body 11 via the pivot shaft 18. Mounted movably. Here, the pivot shaft 18 is fitted into the coupling member main body 11 so as to be orthogonal to the horizontal portion 17B. Accordingly, the horizontal portion 17B of the L-shaped member rotates horizontally with respect to the coupling member 11 in a plane including the horizontal portion 17B.

  The vertical portion 17C is disposed on the side of the one side surface 11C of the coupling member main body 11 and hangs downward (in the direction of the wiper blade main body 1). Here, the side surface 11 </ b> C is a side surface on the side where the wiper arm is disposed when the wiper arm is attached to the coupling member 10. When the rotation position of the L-shaped member 17 is at the rotation position (drop-off prevention position) in which the horizontal portion 17B faces the vertical direction with respect to the coupling member main body side surface 11C, a part of the wiper arm is separated from the vertical portion 17C. It is sandwiched between the coupling member main body side surfaces 11C. Thereby, the operation | movement to the direction of the pin hole 14 with respect to the coupling member main body 11 of a wiper arm is controlled, and drop-off | omission from the pin hole 14 of a coupling pin is prevented. Here, the portion of the wiper arm sandwiched between the vertical portion 11C and the coupling member main body side surface 11C is a sandwiched portion of the wiper arm, and the distance L between the vertical portion 17C and the coupling member main body side surface 11C at the drop-off prevention position. Is set slightly larger than the width W of the held portion. Moreover, in the coupling member 10 of this embodiment, since the L-shaped member 17 is pivotally supported right above the pin hole 14, the portion where the coupling pin of the wiper arm is provided becomes the sandwiched portion.

  The upper surface 11B of the coupling member main body 11 is gently inclined toward the distal end portion 11D side. As a result, when the L-shaped member 17 is rotated toward the distal end portion 11D side of the coupling member main body 11, the surface 11B of the coupling member 11 and the horizontal portion 17B of the L-shaped member 17 do not interfere with each other. ing.

  Note that the L-shaped member 17 is rotatable at an angle of approximately 90 degrees on both sides (left and right) with respect to the longitudinal direction of the wiper blade body 1. Therefore, the vertical portion 17 can be disposed on the opposite side to the illustrated embodiment with respect to the coupling member main body 11. Thus, the wiper arm can be attached to the wiper blade on the opposite side to the illustrated embodiment. That is, according to the coupling member 10 of the present embodiment, the wiper arm can be attached to either side of the both side surfaces of the wiper blade.

  Further, the inclined portion is provided with a rotation restricting portion 19 for restricting the rotation of the L-shaped member 17. The rotation restricting portion 19 is a member made of an elastic member and extending in the longitudinal direction of the coupling member main body 11. The proximal end of the rotation restricting portion 19 is a fixed end that is fixed near the distal end portion 11 </ b> D of the coupling member main body 11. On the other hand, the tip of the rotation restricting portion 19 is a free end and faces the L-shaped member 17 side.

  The rotation restricting portion 19 normally protrudes slightly upward from the upper surface 11 </ b> B of the coupling member main body 11, and the end surface 19 </ b> A on the distal end side faces the L-shaped member 17. In this state, the end surface 19 </ b> A of the rotation restricting portion 19 is disposed adjacent to the side portion 17 </ b> D of the horizontal portion 17 </ b> B of the L-shaped member 17, and the L-shaped member 17 is perpendicular to the coupling member main body 11. The rotation of the L-shaped member 17 is restricted so as not to rotate from the facing rotation position (drop-off prevention position).

  Further, the rotation restricting portion 19 can be bent downward by pressing by the operator and can be depressed inside the coupling member main body 11. As a result, the rotation restriction due to the contact between the end surface 19A of the rotation restricting portion 19 and the side portion 17D of the horizontal portion 17B is released, and the L-shaped member 17 is rotated toward the distal end portion 11D side of the coupling member main body 11. Can continue. In this case, when the part of the horizontal portion 17B of the L-shaped member 17 rides on the upper side of the rotation restricting portion 19, the rotation restricting portion 19 is held in a depressed state.

  Next, a procedure for connecting the wiper blade and the wiper arm using the connecting member 10 will be described with reference to FIGS. In the following description, the wiper arm 60 with the engaging portion 64 shown in FIG. 18 is used as the wiper arm to be coupled. However, the coupling member 10 of the present invention can be combined with a wiper arm with an engaging portion, and can be combined with, for example, the wiper arm 80 shown in FIG.

  In the coupling operation, first, as shown in FIGS. 5 and 6, the L-shaped member 17 of the coupling member 10 is rotated toward the distal end portion 11 </ b> D side of the coupling member main body 11, so that the vertical portion of the L-shaped member 17. 17C is arranged at a rotational position (retracted position) where the wiper arm is retracted from the distal end portion 63 in the distal direction (retracted from the front of the opening end portion 14A of the pin hole 14). In this case, the horizontal portion 17 </ b> B of the L-shaped member 17 is disposed on the rotation restricting portion 19 and holds the rotation restricting portion 19 in a state of being recessed inside the coupling member main body 11. Further, the wiper arm 60 is disposed such that the tip 63 thereof faces the same direction as the tip 11D of the coupling member 10 and the tip 61A of the coupling pin 61 faces the coupling member 10 side.

  Next, as shown in FIGS. 7 and 8, the coupling pin 61 is inserted into the pin hole 14 until the coupling member side surface 66 of the wiper arm 60 contacts the side surface 11 </ b> C of the coupling member 10. In this case, since the pin hole 14 of the coupling member 10 is provided in the vicinity of the proximal end portion 11A, even if the coupling pin 61 is inserted into the pin hole 14, the engaging portion 64 adjacent to the coupling pin 61 is not coupled. The member main body 11 is disposed behind the base end portion 11A. Therefore, even in the wiper arm 60 of the type provided with the engaging member 64, the engaging portion 64 does not interfere with the connecting member 10 in the connecting operation.

  When the coupling pin 61 of the wiper arm 60 is completely inserted into the pin hole 14 of the coupling member 10 in this way, the L-shaped member 17 of the coupling member 10 is rotated toward the wiper arm 60 side. As a result, the L-shaped member 17 reaches the drop-off prevention position shown in FIGS. The connecting operation is completed by setting the L-shaped member 17 to the drop-off prevention position.

  In the drop-off prevention position, the vertical portion 17C is disposed on the side of the base end portion 61B of the coupling pin 61. As a result, the sandwiched portion 67 of the wiper arm 60 is sandwiched between the side surface 11C of the coupling member main body 11, and the movement of the wiper arm 60 in the direction in which the coupling pin 61 drops from the pin hole 14 is restricted. . Further, the horizontal portion 17 </ b> B of the L-shaped member 17 is disposed immediately above the upper surface of the sandwiched portion 67 of the wiper arm 60. Accordingly, when the wiper blade rotates with respect to the wiper arm 60 around the coupling pin 61, the wiper arm 60 contacts the horizontal portion 17B, and thus the rotation of the wiper arm 60 is limited to an appropriate range.

  In the present embodiment, the width of the gripped portion 67 of the wiper arm 60 is the width W from the base end portion 61B of the coupling pin 61 to the side surface 66 of the coupling member (see FIG. 5), and in the drop-off prevention position. The distance L between the vertical portion 17C of the coupling member 17 and the side surface 11C of the coupling member main body is set to be slightly larger than the width W.

  Further, when the L-shaped member 17 reaches the drop-off preventing position, the horizontal portion 17B of the L-shaped member 17 comes off from the rotation restricting portion 19. Thereby, the rotation control part 19 returns to the state which protruded upwards from the coupling member main body from the state depressed in the coupling member main body 11 by the elasticity. As a result, the rotation restricting portion 19 has its end face 19A disposed adjacent to the side portion 17D of the horizontal portion 17B of the L-shaped member 17, and restricts the L-shaped member 17 from rotating from the drop-off preventing position. To do.

  As described above, according to the coupling member 10 of the present embodiment, the sandwiched portion 67 of the wiper arm 60 is sandwiched between the vertical plate 17C of the L-shaped member 17 and the coupling member body 11. Therefore, the movement of the wiper arm 60 in the direction in which the coupling pin 61 of the wiper arm 60 is pulled out from the pin hole 14 of the coupling member 10 is restricted, and the coupling pin 61 can be prevented from coming out of the pin hole 14.

  In this case, the sandwiching between the L-shaped member 17 and the coupling member main body 11 is performed at a portion provided with the coupling pin 61 of the wiper arm 60. That is, the vertical plate 17 </ b> C contacts the base end portion 61 </ b> B of the coupling pin 61, and the side surface 11 </ b> C of the coupling member main body 11 contacts the coupling member side surface 66 of the wiper arm 60. Here, since the coupling pin 61 is the rotation center of the wiper arm 60 with respect to the wiper blade, even when the wiper arm 60 is rotated with respect to the wiper blade during the operation of the wiper device, the coupling member 10 of the wiper arm 60 is. The contact portion (coupling pin base end portion 61B, coupling member side surface 66) with respect to the contact portion (vertical plate 17C, coupling member body 11 side surface 11C) with respect to the wiper arm 60 of the coupling member 10 is slightly around the axis. The movement is small. Therefore, for example, as in the case of the conventional coupling structure shown in FIG. 19, the sliding contact over a long distance as in the case where the contact is generated in the vertical plate 64B of the engaging portion 64 that is separated from the coupling pin 61 in the rotational radius direction. There is no movement in the state, and it is possible to significantly reduce the wear of the connecting member 10 and the generation of scratching noise.

  Further, since the horizontal plate 17B of the L-shaped member 17 is disposed on the upper surface of the sandwiched portion 67 of the wiper arm 60, the rotation of the wiper arm 60 in the direction of rising from the wiper blade is horizontal. The plate 17 </ b> B is regulated by contacting the wiper arm 60. Therefore, the rotation of the wiper arm 60 and the wiper blade is appropriately regulated by the coupling member 10.

  Further, since the L-shaped member 17 for preventing the coupling pin from coming off is provided on the coupling member 10, the wiper arm side does not require a configuration for preventing the coupling pin from coming off, and the wiper arm having the coupling pin is provided. As long as it is, it can be coupled using the coupling member 10.

FIG. 13 and FIG. 14 show an embodiment of a second reference example related to the present invention. As illustrated, the coupling member 40 of the present embodiment includes a pin hole 42 near the proximal end 41 </ b> A of the coupling member main body 41. Further, a front surface portion 43 that is inclined so as to face obliquely forward is provided on the upper surface of the coupling member main body 41 on the distal end 41B side. An L-shaped member 44 is pivotally supported on the front surface portion 43. Further, the rotation restricting portion 46 is provided in the front surface portion 43. The rotation restricting portion 46 includes a raised portion 46A in the vicinity of the free end facing the base end 41A side of the coupling member main body 41, and the end surface 46B of the raised portion 46A is located on the horizontal portion 44B side portion of the L-shaped member 44. It is an opposite surface.

  As shown in FIG. 13, when the coupling pin 61 is inserted into the pin hole 42, the L-shaped member 44 is rotated by the horizontal plate 44 </ b> B standing up and the vertical plate 44 </ b> C retracted from the axis of the pin hole 42. The position (retracted position) is set. In this case, since the horizontal portion 44B of the L-shaped member 44 is in a state of partially riding on the raised portion 46B of the rotation restricting portion 46, the rotation restricting portion 46 is depressed in the coupling member main body 41. Is held in.

  When the coupling pin 61 is completely inserted into the pin hole 42, the L-shaped member 44 is rotated toward the wiper arm 60 to the drop-off preventing position shown in FIG. In the drop-off prevention position, the holding portion 67 of the wiper arm 60 is sandwiched between the vertical portion 44C of the L-shaped member 44 and the coupling member main body 11 from an oblique direction. As a result, the movement of the wiper arm 60 in the direction in which the coupling pin 61 drops from the pin hole 42 is restricted.

  The L-shaped member 44 can rotate approximately 90 degrees on both sides of the wiper blade body 1 in the longitudinal direction. Accordingly, the wiper arm can be coupled to either side of the both side surfaces of the coupling member main body 41.

  The horizontal portion 44 </ b> B of the L-shaped member 44 is disposed obliquely adjacent to and immediately above the distal end portion 63 of the wiper arm 60. Accordingly, the rotation angle of the wiper arm 60 with respect to the wiper blade is limited to an appropriate range by the contact between the horizontal portion 44B and the wiper arm 60.

15 and 16 show an embodiment of the present invention. As illustrated, in the coupling member 50 of the present embodiment, a pin hole 52 is provided on the base end portion 51 </ b> A side of the coupling member main body 51. On the other hand, a U-shaped member 53 is disposed on the distal end 51B side of the coupling member main body 51 so as to be rotatable about the penetrating direction while penetrating in a direction substantially parallel to the pin hole 52. The U-shaped member 53 includes a central horizontal portion 53A and a pair of vertical portions 53B and 53C extending in the vertical direction from both sides of the horizontal portion 53A. The U-shaped member 53 penetrates the coupling member main body 51 in the horizontal portion 53 </ b> A, and the vertical portions 53 </ b> B and 53 </ b> C are disposed on both sides of the coupling member main body 51. The horizontal portion 53 </ b> A extends from the openings 54 on both sides of the coupling member main body 51. An elastic protrusion 55 is provided on the edge of the opening 54. The length of the horizontal portion 53A (distance between the vertical portions 53B) of the U-shaped member 53 is set slightly larger than the sum of the width of the coupling member main body 51 and the width of the held portion 67 of the wiper blade 60. Has been.

  The U-shaped member 53 disposed through the coupling member main body 51 is freely movable in the penetrating direction within a range regulated by the horizontal portions 53B and 53C. Therefore, if the U-shaped member 53 is moved so as to protrude to the opposite side to the illustrated embodiment, the wiper arm can be coupled to the opposite side surface of the coupling member 50. Thus, the wiper arm can be coupled to both sides of the wiper blade also by the coupling member 50 of the present embodiment.

  When the coupling pin 61 of the wiper arm 60 is inserted into the pin hole 52 of the coupling member 50, as shown in FIG. 15, the U-shaped member 53 has the vertical portions 53B and 53C facing substantially vertically upward, and the vertical portion 53B. Is set to a rotational position (retracted position) retracted from the front of the pin hole 52. Thereby, the coupling pin 61 can be inserted into the pin hole 52 without interfering with the U-shaped member 53.

  When the coupling pin 61 is completely inserted into the pin hole 52, the vertical portion 53B of the U-shaped member 53 is inclined toward the base end portion 51A side of the coupling member main body 51, and the U-shaped member 53 is dropped as shown in FIG. Turn to the prevention position. In the drop-off prevention position, one vertical portion 53B of the U-shaped member 53 is disposed on the side of the base end portion 61B (see FIG. 5) of the coupling pin 61, and the wiper arm 60 is coupled to the vertical portion 53B. It is sandwiched between the side surfaces of the member main body 51. As a result, the movement of the wiper arm 60 in the direction in which the coupling pin 61 comes out of the pin hole 52 is restricted. In this case, the opposite vertical portion 53 </ b> C is in contact with the opposite side surface of the coupling member main body 51. Further, a part of the horizontal portion 53 </ b> A of the U-shaped member 53 is disposed close to the tip end portion 63 of the wiper arm 60 obliquely from below. As a result, even if the wiper arm 60 and the wiper blade are about to rotate largely, the distal end portion 63 of the wiper arm 60 and the horizontal portion 53A cannot contact and rotate, so that the wiper arm 60 and the wiper blade rotate. The angle is restricted to an appropriate range.

  When the U-shaped member 53 is rotated from the retracted position to the drop-off prevention position, the side of the horizontal portion 53A comes into contact with the elastic protrusion 55 formed in the opening 54 before the drop-off prevention position. The U-shaped member 53 reaches the drop-off prevention position by getting over the elastic protrusion 55 while deforming it. After the U-shaped member 53 reaches the drop-off prevention position, the elastic protrusion 55 returns to its original shape due to elasticity. Thus, the elastic protrusion 55 abuts on the side of the horizontal portion 53A so that the U-shaped member 53 does not rotate back from the drop-off prevention position to the retracted position side, and the position of the U-shaped member 53 is increased. Hold.

It is a side view which shows the state in which the coupling member in the 1st Embodiment of this invention was attached to the wiper blade main body. It is a side view similarly. It is also a plan view. It is also a front view. It is a top view which shows the state before the coupling | bonding member in 1st Embodiment of this invention, and a wiper arm. It is a perspective view similarly. It is a top view which shows the state which inserted the coupling pin of the wiper arm in the pin hole of the coupling member in the 1st Embodiment of this invention. It is a side view similarly. It is a top view which shows the state which couple | bonded the coupling member and wiper arm in the 1st Embodiment of this invention. It is a side view similarly. It is sectional drawing similarly. It is a perspective view similarly. It is a perspective view which shows the state before the coupling | bonding member in the 2nd Embodiment of this invention, and a wiper arm. It is a perspective view which shows the state after the coupling | bonding member and wiper arm in the 2nd Embodiment of this invention couple | bonded. It is a perspective view which shows the state before the coupling | bonding member in the 3rd Embodiment of this invention, and a wiper arm. It is a perspective view which shows the state after the coupling | bonding member and wiper arm in the 3rd Embodiment of this invention after coupling | bonding. It is a top view which shows an example of a coupling pin type wiper arm. It is a perspective view which shows the wiper arm provided with the engaging part with the coupling pin. FIG. 19 is a perspective view illustrating a coupling state of the wiper arm and the coupling member illustrated in FIG. 18.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiper blade main body 3 Blade rubber 10 Coupling member 11 Coupling member main body 17 L-shaped member 17B Horizontal part 17C Vertical part 19 Rotation restricting part 40 Coupling member 41 Coupling member main body 44 L-shaped member 44B Horizontal part 44C Vertical part 50 Coupling Member 51 coupling member main body 53 U-shaped member 53A horizontal portion 53B vertical portion 53C vertical portion 60 wiper arm 61 coupling pin 64 engaging portion

Claims (3)

A coupling member for a wiper blade used for coupling a wiper arm having a coupling pin and a wiper blade,
A coupling member body in which a pin hole into which the coupling pin is inserted is formed and attached to the wiper blade body;
A fall-off prevention member that sandwiches the wiper arm between the coupling member body and restricts the movement of the wiper arm in the drop-out direction of the pin hole of the coupling pin ;
With
The drop-off prevention member is a U-shaped member comprising a horizontal portion and a pair of vertical portions extending substantially at right angles from both sides of the horizontal portion, and the horizontal portion is disposed through the coupling member body. A coupling member that is rotatable about an axis parallel to the penetrating direction, and that one of the pair of vertical portions sandwiches the wiper arm between the coupling member main body . The coupling member according to claim 1 , wherein the drop-off preventing member is movable in a penetrating direction of the horizontal portion with respect to the coupling member main body. The wiper arm is sandwiched between the arm drop-off prevention member and the coupling member main body by abutting the horizontal portion on at least a part of the portion of the coupling member main body through which the U-shaped member passes. while fixed to the drop-off preventing position, elastic by deforming claim 1 having a resilient projection to permit rotation of the retracted position to allow detachment of the coupling pin from the drop-off preventing position or into the pin hole Or the coupling member of Claim 2 .

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