JP6055519B1 - Wiper blade - Google Patents

Abstract

A wiper blade capable of reducing manufacturing costs while maintaining ease of attachment to and detachment from a wiper arm. A coupling device includes: an engaging protrusion that engages an engaging hole formed in a wiper arm to prevent the wiper arm from moving in a pulling direction; An engagement member 32 having a flexible portion 32b that allows the portion 32a to advance and retreat with respect to the engagement hole, a support portion that supports the engagement member 32, and an upper wall 31a, and supports the width direction of the main body portion. And a connecting member 31 that is pivotally attached to the main body as a shaft. [Selection] Figure 2

Description

  The present invention relates to a wiper blade.

  The conventional wiper has a wiper blade connected to the wiper arm, and wipes the wiping surface of the windshield of the vehicle with a blade rubber provided on the wiper blade, thereby preventing visibility problems such as rain and snow on the wiping surface. Can be removed.

  A known wiper blade is provided with a connecting device that serves as an adapter for attaching the wiper blade to the wiper arm. In this connecting device, a clip that is pivotably attached to the holder body of the wiper blade, and a locking projection that is locked to a locking hole formed in the tip connecting portion of the wiper arm are integrally formed via an elastic piece. Thus, the movement of the wiper arm in the removal direction is restricted (for example, Patent Documents 1 to 3).

JP 2014-121967 A Special table 2013-545664 gazette Special table 2008-509034 gazette

  Although all of the wiper blades described in Patent Documents 1 to 3 are excellent in that they can be easily attached to and detached from the wiper arm by a simple operation such as a pressing operation of the locking projection, In order to connect to the arm, it is necessary to change the design of the entire clip including the locking projection, and the versatility is low and the manufacturing cost is high.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a wiper blade capable of realizing a reduction in manufacturing cost while maintaining easy attachment / detachment to / from a wiper arm.

In order to solve the above object, the invention described in claim 1
And a blade rubber that wipes a wiping surface, a wiper blade with a main body portion for holding the blade rubber, and a coupling device for coupling the main body portion to the wiper arm,
The connecting device is
An engaging member having a Kakarigo突part for the coupling device engages with the engagement hole formed in the connecting portion of the wiper arm is prevented from separating from the connecting part of the wiper arm,
If you support the engaging member together, a connecting member pivotally mounted to the body portion in the width direction of the main body portion as a pivot,
Equipped with a,
The engaging member has a pair of support receiving portions supported by the connecting member and a telescopic expansion / contraction means for connecting the pair of support receiving portions at both ends, and one of the pair of support receiving portions. The engaging protrusion is formed,
The connecting device can be separated from the connecting portion of the wiper arm by pressing the engaging protrusion to compress and deform the expansion / contraction means and retract the engaging protrusion from the engaging hole. It is characterized by.

The invention according to claim 2 is the wiper blade according to claim 1,
Before SL telescopic means, characterized in that it is constituted by the flexible portion formed flexible can bend.

The invention according to claim 3 is the wiper blade according to claim 2,
The expansion / contraction means comprises a pair of the flexible portions,
It said engaging member, said pair of flexible portion is opposed, characterized in that each flexible portion formed by connecting the pair of support receiving portions, respectively.

The invention according to claim 4 is the wiper blade according to claim 2 or 3,
The flexible portion is characterized by being integrally formed with said pair of support receiving portion.

The invention according to claim 5 is the wiper blade according to any one of claims 1 to 4,
The connecting member includes a guide portion that supports the engaging protrusion while guiding the engaging protrusion in the extending and contracting direction of the engaging member.

The invention according to claim 6 is the wiper blade according to any one of claims 1 to 5,
The connecting member has an upper wall and a pair of side walls extending downward from side edges of the upper wall, and an inner space is formed by the upper wall and the pair of side walls,
The engaging member is accommodated in an internal space of the connecting member.

  ADVANTAGE OF THE INVENTION According to this invention, the wiper blade which can implement | achieve reduction of manufacturing cost can be provided, maintaining the ease of attachment or detachment to a wiper arm.

It is a schematic perspective view of the wiper concerning this embodiment. (A) is a schematic perspective view of the connection member which comprises a connection device, (B) is a schematic perspective view of the engagement member which comprises a connection device, (C) is a connection member and an engagement member It is a schematic perspective view of the connection device which combines. (A) is the schematic perspective view which looked at the connection member shown by FIG. 2 (A) from the lower side, (B) is AA sectional drawing in FIG. 2 (A), (C) is 2A is a cross-sectional view taken along line BB in FIG. 2A, FIG. 2D is a cross-sectional view taken along line CC in FIG. 2C, and FIG. 2E is a cross-sectional view taken along line DD in FIG. It is. (A) is a schematic perspective view which shows the engaging member which used the coil spring as a flexible part, (B) is a schematic perspective view which shows the engaging member by which the flexible part was provided only in the front end side. FIG. 8C is a schematic perspective view showing an engaging member provided with a flexible portion only on the base end side. (A) is a figure explaining the attachment point to the holding frame of a cover body, (B) is a figure explaining the attachment point to the holding frame of a coupling device, (C) is a figure of a wiper blade. It is a figure explaining the attachment point to a wiper arm, (D) is a figure which shows a mode that the wiper blade was attached to the wiper arm.

  Hereinafter, a wiper according to an embodiment of the present invention will be described with reference to FIGS. However, the scope of the invention is not limited to the illustrated examples. In addition, in the following description, what has the same function and structure attaches | subjects the same code | symbol, and abbreviate | omits the description.

  First, the wiper W according to the present embodiment will be described with reference to FIG. Here, FIG. 1 is a schematic perspective view of the wiper according to the present embodiment. In the description of the present embodiment, the base end side, the tip end side, the left and right sides, and the top and bottom are the base end side, the tip end side, the left and right sides, and the top and bottom with respect to the state viewed from the side where the wiper W is attached (base end side) means.

  As shown in FIG. 1, the wiper W includes a wiper arm 1 and a wiper blade 2, which are connected by a connecting device 3.

  The wiper arm 1 is connected to an actuator such as a motor at the base end, and is configured to reciprocate in a fan shape on a wiping surface such as an automobile window glass. A connecting portion 11 is integrally formed at the tip of the wiper arm 1, and the connecting portion 11 is connected to the connecting device 3 so that the wiper blade 2 can be connected to the wiper arm 1. .

  The connecting portion 11 has an upper wall 12 and side walls 13 formed by bending the left and right end portions of the upper wall 12 in the vertical direction, and is formed in a U-shaped cross section. The upper wall 12 has a trapezoidal shape in which the right side extends to the base side rather than the left side when viewed from the base side, but the shape is not limited to this. A rectangular engagement hole 16 is formed in the approximate center of the upper wall 12, and an engagement protrusion 32 a of the coupling device 3 described later is configured to freely advance and retract. The engagement protrusion 32a advances into the engagement hole 16 so that the inner peripheral edge of the engagement hole 16 engages with the engagement protrusion 32a and prevents the wiper arm 1 from moving in the removal direction S. It is configured. Further, when the engagement protrusion 32a is pressed, the engagement between the engagement protrusion 32a and the engagement hole 16 is released, the movement of the wiper arm 1 in the removal direction S is permitted, and the wiper blade 2 is moved to the wiper arm. 1 can be removed. As the shapes of the engagement holes 16 and the engagement protrusions 32a, any shapes can be adopted as long as they can be engaged with each other to prevent the wiper arm 1 from moving in the removal direction S. The side wall 13 has a substantially rectangular shape on both the left and right sides, and an engagement recess 14 cut out in a U-shape is formed on the tip side. The engaging recess 14 is configured to engage with an engaging portion 31 c of the connecting device 3 to be described later so that the connecting device 3 follows the operation of the wiper arm 1. Further, a support protrusion 15 that protrudes toward the inner peripheral side is formed at the lower center of the left side wall 13. The support protrusion 15 supports the lower end edge of the side wall 31b of the connecting member 31 of the connecting device 3 to be described later, thereby facilitating the lifting operation of the connecting device 3. In addition, the shape of the connection part 11 is not restricted to what was illustrated, and can be changed in design suitably. In that case, it is possible to cope by adapting the shape of the connecting member 31 of the connecting device 3 described later.

  The wiper blade 2 includes a long blade rubber 22 for wiping a wiping surface such as a windshield of an automobile, a main body 21 for holding the blade rubber 22 along the longitudinal direction, and a connecting member 3 attached to the main body 21. It is configured with. The main body 21 has a substantially rectangular parallelepiped shape extending from the proximal end side toward the distal end side. A recess having a slightly depressed central portion is formed on the upper surface of the main body 21, and the holding frame 7 (see FIG. 5) is fixed to the recess. The holding frame 7 is made of, for example, stainless steel, but is not limited thereto. The holding frame 7 includes a bottom portion 71 extending in the extending direction of the main body portion 21 and side walls 72 formed upright from both left and right ends of the bottom portion 71, and has a U-shaped cross-section with an open upper surface. Is formed. The holding frame 7 is fixed to the main body frame 21 by screwing or welding the bottom 71 to the main body frame 21. The connecting device 3 is rotatably attached to the holding frame 7, and a cover body 4 is attached so as to cover the distal end side of the connecting device 3. Detailed configurations of the coupling device 3 and the cover body 4 will be described later.

  Next, the detailed configuration of the coupling device 3 will be described with reference to FIGS. 2 and 3. Here, FIG. 2 (A) is a schematic perspective view of the connecting member 31 constituting the connecting device 3, and FIG. 2 (B) is a schematic perspective view of the engaging member 32 constituting the connecting device 3, FIG. 3C is a schematic perspective view of the connecting device 3 that is a combination of the connecting member 31 and the engaging member 32. 3 (A) is a schematic perspective view of the connecting member 31 shown in FIG. 2 (A) as viewed from below, and FIG. 3 (B) is a cross-sectional view taken along line AA in FIG. 2 (A). 2C is a cross-sectional view taken along the line BB in FIG. 2A, and FIG. 2D is a cross-sectional view taken along the line CC in FIG. 2C. These are DD sectional drawings in Drawing 2 (C).

  As shown in FIGS. 2 and 3, the connecting device 3 includes a connecting member 31 and an engaging member 32, and these are assembled.

  The connecting member 31 is made of a resin such as PBT (Poly Butylene Terephtalate) or POM (Polyoxymethylene), but the material is not limited to this. The connecting member 31 has a pair of side walls 31b extending from the front end side to the base end side, and an upper wall 31a connecting the upper ends of the pair of side walls 31b and extending from the front end side to the base end side. An internal space is formed by the pair of side walls 31b and the upper wall 31a.

  Each of the pair of side walls 31b has its lower end edge gently inclined downward by a length of about ¼ from the base end side, and thereafter the horizontal state is maintained. And it inclines downward again in the position which becomes about 1/3 from the front end side, and the wide part is formed. A pair of cylindrical rotating shafts 31d are provided so as to project from each other at substantially the center of the inner surface of the wide portion. The rotation shaft 31d is inserted into a rotation shaft hole 72b (see FIG. 5) of the holding frame 7 to be described later, so that the rotation shaft 31d is perpendicular to the longitudinal direction of the main body portion 21 (that is, the left-right direction or the width of the main body portion 21). It is configured to be pivotally supported with respect to the main body 21 with the direction) as a rotation axis. In addition, instead of the pivot shaft 31d, a shaft hole is formed in the side wall 31b, and the coupling device 3 is attached to the main body 21 by aligning with the pivot shaft hole 72b of the holding frame 7 and penetrating a shaft pin or the like. You may be comprised so that it may be axially supported. Further, on the outer side surfaces of the wide portions of the pair of side walls 31b, engaging portions 31c formed in a U-shape project outward from the front end to the base end side. The shape of the engaging portion 31c matches the shape of the engaging recess 14 formed in the connecting portion 11 of the wiper arm 1, so that the wiper blade 2 can be firmly attached to the wiper arm 1. It has become. Also, a hook-shaped guide protrusion 31f protrudes inward from the lower edge of the tip side slightly from the center of the inner surface of the left side wall 31b when viewed from the base end side. The guide protrusion 31f is inserted into a guide hole 72c (see FIG. 5) of the holding frame 7 to be described later and restricts the movement range of the connecting device 3.

  The upper wall 31a is formed with a notch 31e whose front end is notched from substantially the center, and prevents the connecting device 3 from interfering with other members when it is rotated upward. A rectangular insertion hole 31g is formed on the base end side slightly from the notch 31e of the upper wall 31a. The inner diameter of the insertion hole 31g is slightly larger than the outer diameter of the engagement protrusion 32a of the engagement member 32, and supports the engagement protrusion 32a while guiding the engagement protrusion 32a in the expansion / contraction direction of the engagement member 32. It functions as a guide.

  In the present embodiment, as shown in FIGS. 3A to 3C, the connecting member 31 is integrally formed with a support portion 31h extending downward from the inner surface of the upper wall 31a. The support part 31h has a pair of side walls 31h1 extending downward from both left and right edges of the insertion hole 31g and a bottom part 31h2 connecting the lower ends of the pair of side walls 31h1, thereby An accommodation space 31j is formed. As will be described later, the accommodation space 31j is a space in which the engagement member 32 is accommodated. The bottom 31h2 is formed to be lower than the lower end of the side wall 31b of the connecting member 31, but is not limited to this, and can be set as appropriate according to the shape of the engaging member 32. A cylindrical support convex portion 31i is formed substantially at the center of the upper surface of the bottom portion 31h2, and is fitted into a support receiving hole 32e provided in a support receiving portion 32d of the engaging member 32 described later. Further, a gap is formed between the side wall 31h1 of the support portion 31h and the side wall 31b of the connecting member 31, and functions as the insertion portion 31k. The insertion portion 31k is configured such that the side wall 72 (see FIG. 5) of the holding frame 7 enters when the coupling device 3 is mounted on the holding frame 7.

  As shown in FIG. 2B, the engaging member 32 is formed of a resin such as PBT or POM, but the material is not limited to this. The engaging member 32 includes a substantially cubic-shaped engaging protrusion 32a erected upward from a substantially center of a substantially rectangular base 32a1, and both ends of the base 32a1 (that is, the distal end side and the proximal end side). And a pair of flexible portions 32b that are bent in an outward shape and arranged opposite each other, and a substantially rectangular support receiver continuous to the pair of flexible portions 32b. 32d, and is formed by integral formation thereof. That is, it can be said that the engaging protrusion 32a and the support receiving portion 32d are connected to each other at both ends of the flexible portion 32b and are opposed to each other. Thereby, the engagement member 32 can be reduced in size, and space saving can be achieved.

  The flexible portion 32b has a pair of shafts extending from the left and right ends of the base 32a1, bent at substantially the center and connected to the left and right ends of the support receiving portion 32d, and a transverse axis connecting the left and right axes at the bent portion. The opening 32c is formed by these shaft portions. Since the pair of flexible portions 32b are configured in this way, they can be elastically deformed at the bent portions, and are urged in the direction of expanding with the bent portions as the support shafts. That is, since the engaging protrusion 32a is urged by the pair of opposing flexible portions 32b, the engaging protrusion 32a can be moved in the vertical direction. When pressing and releasing the engagement of the engagement protrusion 32a from the engagement hole 16 opened in the connecting portion 11 of the wiper arm 1, it can be performed with a small stroke. Thus, the flexible part 32b functions as an expansion / contraction means. In the present embodiment, the pair of flexible portions 32b are formed to be bent outward, but may be formed to be bent inward. Further, the flexible portion 32b may be formed by bending a plate-like member having no opening 32c.

  The support receiving portion 32d has a substantially rectangular shape, and the above-described support receiving hole 32e is opened in the center.

  The coupling device 3 can be manufactured by assembling the engaging member 32 and the coupling member 31 configured as described above as follows. That is, first, the engaging member 32 is compressed and deformed, and the engaging member 32 that has been compressed and deformed is inserted into the accommodation space 31 j formed by the support portion 31 h of the connecting member 31. Subsequently, the support convex portion 31i formed on the support portion 31h of the coupling member 31 is fitted into the support reception hole 32e opened in the support reception portion 32d of the engagement member 32, and the engagement protrusion 32a is inserted into the insertion hole. When aligned with 31g, the engaging member 32 is extended by the restoring force of the flexible portion 32b, and the engaging protrusion 32a is inserted into the insertion hole 31g. At this time, the base 32a1 of the engaging member 32 abuts on the inner surface of the upper wall 31a of the connecting member 31, and the engaging member 32 is supported by the connecting member 31, and FIG. 2 (C), FIG. 3 (D) and FIG. As shown to (E), the connection apparatus 3 is produced. In this state, the engaging member 32 is accommodated in an internal space formed by the upper wall 31a of the connecting member 31 and the pair of side walls 31b. As a result, it is possible to reduce the size of the coupling device 3. Thus, in the present embodiment, the support member 31h and the inner surface of the upper wall 31a function as support means for supporting the engagement member 32. In addition, after fitting the support convex part 31i to the support receiving hole 32e, these may be caulked so that they cannot be removed, or the support receiving part 32d may be attached to the bottom 31h2 of the support part 31h and removed. You may make it impossible.

  Next, a modified example of the engaging member 32 will be described with reference to FIG. Here, FIG. 4A is a schematic perspective view showing an engaging member using a coil spring as the flexible portion, and FIG. 4B is an engagement in which the flexible portion is provided only on the distal end side. It is a schematic perspective view which shows a member, and the same figure (C) is a schematic perspective view which shows the engaging member by which the flexible part was provided only in the base end side.

  The engagement member 132 shown in FIG. 4A is composed of a substantially cubic engagement protrusion 132a erected upward from a substantial center of the upper surface of a substantially rectangular base 132a1, and a coil spring. And a spring member 132b. Here, it is good also as a structure which provides the boss | hub for fitting the spring member 132b in the back surface of the base 132a1, and supports the spring member 132b. When the engaging member 132 is attached to the connecting member 31, the spring member 132b is compressed and inserted into the accommodating space 31j formed by the support portion 31h, and the lower end of the spring member 132b is the bottom of the support portion 31h. The connecting device 3 can be manufactured by fitting the support protrusion 31i formed in 31h2 and inserting the engagement protrusion 132a into the insertion hole 31g.

  The engagement member 232 illustrated in FIG. 4B has a shape in which the proximal-side flexible portion 32b of the pair of flexible portions 32b in the engagement member 32 illustrated in FIG. 2B is omitted. ing. Further, as shown in FIG. 4C, the engaging member 232 shown in FIG. 4B can be reversed and the distal end side flexible portion 32b can be omitted.

  A procedure for attaching the wiper blade 2 to the wiper arm 1 using the connecting device 3 configured as described above will be described with reference to FIG. Here, FIG. 5 (A) is a diagram for explaining the attachment procedure of the cover body 4 to the holding frame 7, and FIG. 5 (B) is a diagram for explaining the attachment procedure of the connecting device 3 to the holding frame 7. FIG. 3C is a view for explaining the attachment procedure of the wiper blade 2 to the wiper arm 1, and FIG. 4D is a view showing a state where the wiper blade 2 is attached to the wiper arm 1. It is.

  As shown in FIG. 5A, first, the cover body 4 is attached to the holding frame 7 attached to the main body portion 21 of the wiper blade 2. The cover body 4 is configured by integrally forming a mounting portion 41 and a cover portion 42. The attachment portion 41 is formed in a U-shape with an open lower surface, and cylindrical attachment shafts 41a project outwardly from the lower portions of both side surfaces. The cover portion 42 has a pair of side walls 42a whose proximal end side edges are cut in an arc shape so that the mounting shaft 41a is exposed outward, and whose distal end side edge portions are R-shaped, and the pair of side walls 42a. It is comprised by the coating | coated part 42b which connects the front end side edge part. The covering portion 42 b extends downward from the upper end and is connected to the upper end of the attachment portion 41. A gap into which the side wall 72 of the holding frame 7 enters is formed between the side surface of the mounting portion 41 and the side wall 42 a of the cover portion 42. Therefore, when the cover body 4 is attached to the holding frame 7, the side surfaces of the attachment portions 41 of the cover body 4 are elastically deformed in the direction in which they are close to each other, and the attachment shaft 41 a is attached to the attachment shaft hole 72 a of the holding frame 7. Align from the inside. In this state, when the elastic deformation of the mounting portion 41 is restored, the mounting shaft 41a is fitted into the mounting shaft hole 72a. At this time, since the side wall 42a of the cover body 4 is arranged outside the side wall 72 of the holding frame 7, the cover body 4 is attached so as to straddle the holding frame 7 as shown in FIG. Will be. Note that the cover body 4 may not be provided.

  Subsequently, as shown in FIG. 5B, the connecting device 3 is attached to the holding frame 7. Specifically, the pair of side walls 31b constituting the connecting member 31 are elastically deformed so as to spread outward, and the pair of rotation shafts 31d are respectively formed on the rotation shaft holes 72b of the holding frame 7 and outside the side walls 72. And the guide protrusion 31f is aligned with the guide hole 72c of the holding frame 7. In this state, when the elastic deformation of the side wall 31b of the connecting member 31 is restored, the pair of rotating shafts 31d enter the rotating shaft holes 72b of the holding frame 7, and as shown in FIG. Is attached so as to be rotatable about the rotation shaft 31d. The guide protrusion 31f also enters the guide hole 72c, and the guide protrusion 31f abuts at the upper and lower end positions of the guide hole 72c, thereby restricting the rotation range of the connecting device 3. As shown in FIG. 5C, in the state where the coupling device 3 is attached to the holding frame 7, the front end side of the coupling device 3 is covered by the cover body 4.

  Finally, the wiper blade 2 is attached to the wiper arm 1 as shown in FIG. Specifically, the wiper blade 2 is brought close to the wiper arm 1, and the connecting device 3 is inserted into the connecting portion 11 from the base end side so that the connecting device 3 is covered with the connecting portion 11 of the wiper arm 1. At this time, the support protrusion 15 formed on the side wall 13 of the wiper arm 1 supports the lower end of the side wall 31b of the connecting member 31, and the engagement recess 14 of the wiper arm 1 is inserted into the engagement portion 31c from the distal end side. Engage. On the other hand, after the engaging protrusion 32 a of the connecting device 3 is pressed downward by the upper wall 12 constituting the connecting portion 11 of the wiper arm 1, the engaging protrusion 32 a is engaged with the connecting portion 11 of the wiper arm 1. When aligned with the hole 16, the elastic deformation of the flexible portion 32 b of the engagement member 32 is restored, the engagement protrusion 32 a is urged upward, and the engagement protrusion 32 a is inserted into the engagement hole 16. As a result, the connecting device 3 rotates in the vertical direction following the operation of the wiper arm 1, and the movement of the wiper arm 1 in the removal direction S causes the engagement protrusion 32a and the engagement hole 16 to be engaged. Is prevented. Thereby, the wiper W which concerns on this embodiment is produced.

  As described above, according to the present embodiment, the coupling device 3 engages with the engagement hole 16 formed in the wiper arm 1 to prevent the wiper arm 1 from moving in the removal direction S. An engaging member 32 having a mating protrusion 32a, and a flexible portion 32b that allows the engaging protrusion 32a to advance and retreat relative to the engaging hole 16 by expanding and contracting, and a support portion 31h that supports the engaging member 32 And a connecting member 31 attached to the main body 21 so as to be rotatable about the width direction of the main body 21 as a support shaft. As a result, it is possible to provide a wiper blade that can reduce the manufacturing cost while maintaining the ease of attachment to and removal from the wiper arm. That is, even if the shape of the tip connecting portion of the wiper arm is changed, it is not necessary to change the design of the engaging member, and it can be dealt with only by changing the design of the connecting member. As a result, a reduction in manufacturing cost can be realized.

  According to the present embodiment, the engagement member 32 has the support receiving portion 32d supported by the support portion 31h. The support receiving portion 32d is disposed at a position facing the engaging protrusion 32a. The flexible portion 32b is bent so as to be flexible, and connects the support receiving portion 32d and the engaging protrusion 32a at both ends. As a result, the engagement member can be reduced in size.

  Further, according to the present embodiment, the engaging member 32 has the pair of flexible portions 32b arranged to face each other, and each flexible portion 32b connects the support receiving portion 32d and the engaging protrusion 32a. . As a result, the engaging protrusion can be stably moved in the vertical direction, so that the engaging protrusion can be operated with a small stroke, and the operability can be improved.

  Moreover, according to this embodiment, since the flexible part 32b is integrally formed with the support receiving part 32d and the engaging protrusion 32a, the number of parts can be reduced with a simple structure, and the manufacturing cost can be further reduced. Reduction can be achieved.

  Moreover, according to this embodiment, since the connection member 31 is provided with the insertion hole 31g which supports the engaging protrusion 32a while guiding the engaging protrusion 32a in the expansion / contraction direction of the engaging member 32, the engaging protrusion can be stably provided. It can be operated.

  Moreover, according to this embodiment, the connection member 31 has the upper wall 31a and the pair of side walls 31b extending downward from the side ends of the upper wall 31a, and the inner space is defined by the upper wall 31a and the pair of side walls 31b. Is formed. The engaging member 32 is accommodated in the internal space of the connecting member 31. As a result, the connecting device can be downsized.

  Note that the actions and effects described in the embodiments of the present invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in the embodiments of the present invention. It is not limited to what was done.

W wiper 1 wiper arm 2 wiper blade 3 connecting device 7 holding frame 11 connecting part 12 upper wall 13 side wall 16 engaging hole 21 main body part 22 blade rubber 31 connecting member 31a upper wall 31b side wall 31d rotating shaft 31g insertion hole 31h support part 32 engaging member 32a engaging protrusion 32b flexible part 32d support receiving part 72 side wall 72b rotation shaft hole

Claims (6)

And a blade rubber that wipes a wiping surface, a wiper blade with a main body portion for holding the blade rubber, and a coupling device for coupling the main body portion to the wiper arm,
The connecting device is
An engaging member having a Kakarigo突part for the coupling device engages with the engagement hole formed in the connecting portion of the wiper arm is prevented from separating from the connecting part of the wiper arm,
If you support the engaging member together, a connecting member pivotally mounted to the body portion in the width direction of the main body portion as a pivot,
Equipped with a,
The engaging member has a pair of support receiving portions supported by the connecting member and a telescopic expansion / contraction means for connecting the pair of support receiving portions at both ends, and one of the pair of support receiving portions. The engaging protrusion is formed,
The connecting device can be separated from the connecting portion of the wiper arm by pressing the engaging protrusion to compress and deform the expansion / contraction means and retract the engaging protrusion from the engaging hole. Wiper blade characterized by. Before SL telescopic means, wiper blade according to claim 1, characterized in that it is constituted by the flexible portion formed flexible can bend. The expansion / contraction means comprises a pair of the flexible portions,
Said engaging member is a wiper blade according to claim 2, wherein the pair of flexible portions is opposed, characterized in that each flexible portion formed by connecting the pair of support receiving portions, respectively. The flexible section, the wiper blade according to claim 2 or 3, characterized in that it is integrally formed with said pair of support receiving portion.   The wiper blade according to any one of claims 1 to 4, wherein the connecting member includes a guide portion that supports the engaging protrusion while guiding the engaging protrusion in an expansion / contraction direction of the engaging member. The connecting member has an upper wall and a pair of side walls extending downward from side edges of the upper wall, and an internal space is formed by the upper wall and the pair of side walls,
The wiper blade according to claim 1, wherein the engaging member is accommodated in an internal space of the connecting member.

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