JP2020179756A - Wiper blade - Google Patents

Abstract

To improve assemblability by reducing the number of components, and suppress manufacturing costs.SOLUTION: An end cap 51 includes: a bottom wall part 51a which is opposite to one end part of a holder member in a longitudinal direction from the longitudinal direction of the holder member; a pair of arm parts 51d which protrude from the bottom wall part 51a in the longitudinal direction of the holder member and are arranged in a lateral direction of the holder member; an engagement protrusion part 51f which protrudes in a direction intersecting with the longitudinal direction of the holder member from the pair of arm parts 51d and enters an engagement recess part 33b arranged on each of a pair of vertebras 33. Thereby, the end cap 51 is directly fixed to the vertebra 33 and the number of components can be reduced, and also the pair of arm parts 51d can be fixed individually to the pair of vertebras 33. Thus, assemblability can be improved by reducing the number of components, and manufacturing costs can be suppressed.SELECTED DRAWING: Figure 6

Description

The present invention relates to a wiper blade that is mounted on a swing-driven wiper arm and that reciprocates and wipes on a windshield.

Conventionally, vehicles such as automobiles are equipped with a wiper device for wiping rainwater, dust, etc. adhering to the windshield. The wiper device includes a wiper arm that is oscillated by an electric motor and a wiper blade that is attached to the wiper arm. The wiper blade includes an arm connecting member that is rotatably connected to the tip of the wiper arm, a leaf spring (vertibra) fixed to the arm connecting member, and a holder member (holder body) that holds the leaf spring. It is provided with a blade rubber held by a holder member.

Such a wiper blade is described in, for example, Patent Document 1. In the wiper blade described in Patent Document 1, an end cap is attached to the longitudinal end portion of the holder member, thereby obscuring the longitudinal end portion of the leaf spring. Then, the end cap is hooked and fixed to a connecting member that is caulked and fixed to the longitudinal end portions of the pair of leaf springs.

International Publication No. 2012/090638

However, the wiper blade described in Patent Document 1 described above is assembled by caulking a connecting member to the longitudinal end portions of a pair of leaf springs and then hooking an end cap on the caulked fixed connecting member. Therefore, in addition to the large number of parts forming the wiper blade, problems such as complicated assembly work of the wiper blade have occurred, resulting in an increase in manufacturing cost.

An object of the present invention is to provide a wiper blade capable of reducing the number of parts, improving assembling property, and thus reducing the manufacturing cost.

In one aspect of the present invention, the wiper blade is mounted on a swing-driven wiper arm and reciprocally wipes on the windshield, and is integrally provided on the lip portion in contact with the windshield and the lip portion. A blade rubber having a main body portion, a holder member having a holding portion for holding the main body portion, and a pair of accommodating portions provided on the holder member and arranged on both sides of the holding portion around the holding portion. , Each of which is accommodated in the pair of accommodating portions, formed in a plate shape along the longitudinal direction of the blade rubber, and fixed to the pair of leaf springs having recesses at the longitudinal end portions and the pair of leaf springs. An arm connecting member to which the wiper arm is connected and an end cap that covers one end in the longitudinal direction of the holder member are provided, and the end cap is provided with respect to one end in the longitudinal direction of the holder member. The facing wall portion facing from the longitudinal direction, a pair of arms protruding from the facing wall portion in the longitudinal direction of the holder member and arranged side by side in the lateral direction of the holder member, and the pair of arms from the pair of arms. It is characterized by having a convex portion that protrudes in a direction intersecting the longitudinal direction of the holder member and enters the concave portion provided in each of the pair of leaf springs.

In another aspect of the present invention, the end caps are provided at both ends of the facing wall portion along the lateral direction of the blade rubber, and the pair of side wall portions projecting in the longitudinal direction of the blade rubber and the pair. The side wall portion includes a first support portion provided at the same position as the convex portion in the longitudinal direction of the blade rubber, and the first support portion uses the pair of leaf springs as a plate of the leaf spring. It is characterized by being sandwiched from both sides in the thick direction.

In another aspect of the present invention, the end cap is provided with a second support portion that supports the longitudinal end portions of the pair of leaf springs in the longitudinal direction of the leaf springs.

In another aspect of the present invention, the convex portion is projected toward the windshield, the second support portion is projected toward the side opposite to the windshield side, and the convex portion is projected. The second support portion is characterized in that it is arranged at a position where it does not overlap with each other when viewed from the longitudinal direction of the holder member.

In another aspect of the present invention, the second support portion is visible when the end cap is viewed alone from the longitudinal direction of the holder member.

In another aspect of the present invention, the end cap includes a third support portion provided between the pair of leaf springs and the blade rubber, and the pair of leaf springs comprises the first support portion and the blade rubber. It is characterized in that it is sandwiched by the third support portion from the width direction of the leaf spring.

According to the present invention, the end cap can be directly fixed (directly hooked) to a pair of leaf springs, and the number of parts can be reduced. Further, each of the pair of arms can be individually fixed to each of the pair of leaf springs. Therefore, as compared with the conventional fixed structure, the number of parts can be reduced and the assembling property can be improved, and the manufacturing cost can be suppressed.

It is a perspective view which shows the wiper blade which concerns on this invention. It is a view of arrow A of FIG. It is sectional drawing which follows the line BB of FIG. It is a perspective view which disassembled the arm connecting member. It is a perspective view which looked at the arm connecting member from the back side (windshield side). It is sectional drawing which follows the CC line of FIG. It is sectional drawing of the end cap along the DD line of FIG. It is an enlarged view of the broken line circle E part of FIG. (A) and (b) are diagrams for explaining the manufacturing procedure of the end cap. It is a figure explaining the assembly procedure of a wiper blade.

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

1 is a perspective view showing the wiper blade according to the present invention, FIG. 2 is a view taken along the line A of FIG. 1, FIG. 3 is a sectional view taken along the line BB of FIG. 1, and FIG. 4 is an arm connecting member. An exploded perspective view, FIG. 5 is a perspective view of the arm connecting member viewed from the back side (windshield side), FIG. 6 is a sectional view taken along the line CC of FIG. 1, and FIG. 7 is a D- of FIG. FIG. 8 is a cross-sectional view of the end cap along line D, FIG. 8 is an enlarged view of the broken line E portion of FIG. 6, FIGS. 9 (a) and 9 (b) are views for explaining the manufacturing procedure of the end cap, and FIG. The figures explaining the assembly procedure of the wiper blade are shown respectively.

The wiper blade 10 shown in FIG. 1 performs a reciprocating wiping operation on a windshield 11 (see FIGS. 3 and 6) in front of a vehicle such as an automobile. More specifically, the central portion of the wiper blade 10 in the longitudinal direction is rotatably mounted on the tip end side of the wiper arm WA which is oscillatedly driven on the windshield 11. The windshield 11 constitutes the windshield according to the present invention.

As a result, the wiper blade 10 reciprocates and wipes on the windshield 11 as the wiper arm WA swings. Therefore, rainwater, dust, and the like adhering to the windshield 11 are wiped off cleanly, and the visibility of the driver and the like is maintained in a good state.

Inside the bulkhead that forms the engine room of the vehicle, a wiper motor (electric motor), which is a drive source, a link mechanism that converts the rotational motion of the wiper motor into a swing motion, and a link mechanism are rocked. It is equipped with a pivot shaft, etc. As a result, the tip end side of the wiper arm WA whose base end side is fixed to the pivot shaft is oscillated on the windshield 11.

As shown in FIGS. 1 to 8, the wiper blade 10 includes a blade rubber 20 that is slidably contacted with the windshield 11, a pair of holder members 30 that hold the blade rubber 20, and holder members 30 at both ends in the longitudinal direction. The arm connecting member 40 is equipped with a pair of cap members 40, and a pair of cap members 50 mounted on an end portion of the pair of holder members 30 opposite to the arm connecting member 40 in the longitudinal direction.

As shown in FIGS. 3 and 6, the blade rubber 20 includes a main body portion (main body portion) 21, a sub body portion 22, a neck portion 23, and a lip portion 24, which are integrally provided. .. The lip portion 24 is brought into contact with the windshield 11. The blade rubber 20 is formed into a long length by extrusion molding an elastic material such as rubber, and its cross-sectional shape is the same in substantially the entire longitudinal direction.

The thickness dimension of the main body portion 21 with respect to the wiping direction of the blade rubber 20 (left and right directions in FIGS. 3 and 6) is larger than the thickness dimension of the sub body portion 22 with respect to the wiping direction of the blade rubber 20. As a result, the main body portion 21 can be held by the pair of first holding claws 31b provided on the holder member 30.

Further, the thickness dimension of the neck portion 23 with respect to the wiping direction of the blade rubber 20 is smaller than the thickness dimension of the subbody portion 22. As a result, the neck portion 23 is easily elastically deformed. Therefore, when the wiper blade 10 reciprocates on the windshield 11, the lip portion 24 is tilted, and the corner portion of the tip portion of the lip portion 24 smoothly moves in the wiping direction of the wiper blade 10 to the front. Rainwater, dust, etc. adhering to the glass 11 are surely wiped off.

As shown in FIGS. 1 and 3, the holder member 30 includes a holder main body 31 and a fin portion 32. The holder body 31 and the fin portion 32 are integrated by extruding (two-color molding) materials having different hardnesses at the same time to form a long shape. This simplifies the manufacturing process of the wiper blade 10 by eliminating the trouble of bonding the holder body 31 and the fin portion 32 in a separate process.

The holder body 31 is made of a flexible resin material such as plastic so that it can easily follow the windshield 11 curved with a predetermined curvature while having sufficient strength to hold the blade rubber 20. It is formed.

As shown in FIG. 3, a holding groove 31a is formed in the central portion in the lateral direction (central portion in the left-right direction in FIG. 3) of the holder main body 31. The holding groove 31a constitutes the holding portion in the present invention, and is recessed so as to have the same shape in substantially the entire longitudinal direction of the holder main body 31. The main body portion 21 of the blade rubber 20 is inserted inside the holding groove 31a. That is, the holding groove 31a is designed to hold the main body portion 21. A slight gap is formed between the holding groove 31a and the main body portion 21, which makes it possible to easily attach / detach the blade rubber 20 to / from the holder main body 31.

Further, the holding groove 31a is supported on the opening side, that is, the windshield 11 side (lower side in FIG. 3) so as to cover the windshield 11 side of the main body portion 21, and faces each other so as to sandwich the sub body portion 22. A pair of first holding claws 31b are integrally provided. As a result, the blade rubber 20 is securely held with respect to the holder body 31 without falling off.

A pair of accommodating portions 31c having a substantially rectangular cross section are formed on both sides of the holder body 31 in the lateral direction (left and right sides in FIG. 3). Similar to the holding groove 31a, these accommodating portions 31c are provided in the same shape over substantially the entire longitudinal direction of the holder main body 31. Further, the pair of accommodating portions 31c are arranged on both sides of the holding groove 31a around the holding groove 31a. More specifically, the height position of the pair of accommodating portions 31c from the windshield 11 and the height position of the holding groove 31a from the windshield 11 are substantially the same height position.

A plate-shaped vertical bra (leaf spring) 33 made of a steel material having a spring property is housed inside the pair of housing portions 31c. The pair of vertical bras 33 are housed inside the pair of housing portions 31c so as to be movable in the longitudinal direction, that is, in a non-fixed state. As a result, the spring force of the pair of vertical bras 33 is efficiently transmitted to the holder body 31 and the blade rubber 20.

Here, the pair of vertical bras 33 extend in the longitudinal direction of the blade rubber 20 and are curved with a curvature larger than the curvature of the windshield 11 in a natural state in which no external force is applied. As a result, the pair of vertical bras 33 elastically deform the holder body 31 and the blade rubber 20 according to the curvature of the windshield 11. Therefore, substantially the entire area along the longitudinal direction of the lip portion 24 is brought into close contact with the windshield 11.

A rubber pressing portion 31d that presses the main body portion 21 of the blade rubber 20 toward the windshield 11 is provided at a portion of the holding groove 31a facing the windshield 11. Further, the holder body 31 is directed toward the windshield 11 by the spring force of the pair of vertical bras 33 at the portion of the pair of accommodating portions 31c facing the windshield 11 and closer to the windshield 11 than the rubber pressing portion 31d. A holder pressing portion 31e for pressing is formed.

Then, the pair of vertical bras 33 press the holder pressing portions 31e of the accommodating portion 31c with the pressing pressure F1, and these pressing pressures F1 are transmitted to the rubber pressing portion 31d as the combined force F2. As a result, the combined force F2 is transmitted to the main body portion 21 via the rubber pressing portion 31d, and the holder main body 31 and the blade rubber 20 are elastically deformed according to the curvature of the windshield 11.

Here, the pair of holder pressing portions 31e are arranged closer to the windshield 11 than the rubber pressing portions 31d. Thereby, for example, even if the holder body 31 is twisted, the stable combined force F2 can be transmitted to the rubber pressing portion 31d. Therefore, substantially the entire longitudinal direction of the lip portion 24 can be reliably brought into close contact with the windshield 11.

As shown in FIG. 3, the fin portion 32 is formed in a long length by an elastic material such as rubber, and is integrally provided with the holder main body 31 along the longitudinal direction thereof. That is, the hardness of the fin portion 32 is set to be lower than the hardness of the holder main body 31. As a result, the fin portion 32 can be elastically deformed by the wind pressure of the running wind.

The fin portion 32 is arranged on the side opposite to the windshield 11 side of the holder main body 31, and a top portion 32a farthest from the windshield 11 is provided at the tip portion (upper part in FIG. 3). The top portion 32a is arranged on the downstream side (right side in FIG. 3) in the flow direction of the traveling wind with respect to the lateral direction of the holder main body 31. That is, the blade rubber 20 is arranged on the upstream side (left side in FIG. 3) in the flow direction of the traveling wind from the fin portion 32.

Due to such an arrangement relationship, the running wind hits the fin portion 32, so that downforce is efficiently applied to the blade rubber 20. This downforce becomes larger as the running wind is stronger, and the lift of the wiper blade 10 from the windshield 11 is effectively suppressed particularly when the vehicle is running at high speed, and the deterioration of the wiping performance is suppressed. To.

As shown in FIGS. 1 and 4, an arm connecting member 40 is provided at the central portion of the wiper blade 10 in the longitudinal direction. A pair of holder members 30 are attached to the end portions of the arm connecting member 40 in the longitudinal direction. Specifically, the cap member 50 is attached to one end in the longitudinal direction of the holder member 30, and the arm connecting member 40 is attached to the other end in the longitudinal direction of the holder member 30 in the longitudinal direction of the blade rubber 20. The arm connecting member 40 is arranged between the pair of holder members 30.

As shown in FIGS. 4 and 5, the arm connecting member 40 has a connecting body 41 rotatably connected to a U-shaped hook of the wiper arm WA (see FIG. 1) and a wiper to the connecting body 41. It includes a cover member 42 that is immovably mounted in the wiping direction of the blade 10.

The arm connecting member 40 is formed in a substantially rectangular shape extending in the longitudinal direction of the wiper blade 10, and the connecting body 41 and the cover member 42 are both formed into a predetermined shape by injection molding a resin material such as plastic. .. Since the connecting body 41 is connected to the wiper arm WA, it is made of a high-hardness plastic material that is not deformed by the spring force of the vertical bra 33. On the other hand, the cover member 42 is made of a flexible low-hardness plastic material so as to be elastically deformed by the spring force of the vertical bra 33.

The connecting main body 41 includes a base portion 41a opened on the windshield 11 side (lower side in FIG. 4). The base portion 41a is formed in a substantially rectangular shape so as to extend in the longitudinal direction of the wiper blade 10, and includes a bottom wall 41b and a pair of side walls 41c. Here, the pair of side walls 41c face each other with respect to the wiping direction of the blade rubber 20, so that the cross-sectional shape along the lateral direction of the base portion 41a (the wiping direction of the wiper blade 10) is substantially U-shaped. Is formed in.

As shown in FIG. 4, a hollow clip accommodating portion 41d is integrally provided on the bottom wall 41b of the base portion 41a. A clip member (not shown) fixed to the U-shaped hook of the wiper arm WA is swingably housed in the clip accommodating portion 41d. The clip accommodating portion 41d includes a pair of wall portions 41e corresponding to the pair of side wall portions 41c, and the height dimension of these wall portions 41e is larger than the height dimension of the side wall portions 41c.

A columnar support pin PN made of a steel material is provided between the pair of wall portions 41e, and a clip member is swingably mounted on the support pin PN. Here, the clip member is provided with an engaging claw (neither shown) that is engaged with an engaging hole provided in the U-shaped hook, whereby the wiper blade 10 is provided with respect to the wiper arm WA. It can be easily connected with one touch. The support pin PN is fixed to the pair of wall portions 41e when the connecting main body 41 is injection-molded. That is, the support pin PN is integrated with the connecting main body 41 by insert molding.

As shown in FIG. 5, a pair of vertical bra holding portions 41f are provided inside the pair of side walls 41c (on the bottom wall 41b side). The pair of vertical bra holding portions 41f are arranged with a predetermined interval S in the longitudinal direction of each side wall 41c, and the cross-sectional shape thereof is formed in a substantially U shape. Further, the pair of vertical bra holding portions 41f provided on one side wall 41c and the pair of vertical bra holding portions 41f provided on the other side wall 41c are provided with respect to the lateral direction of the connecting main body 41 (wiping direction of the wiper blade 10). They are arranged facing each other.

Then, these vertical bra holding portions 41f are opened toward the inside of the connecting main body 41 (blade rubber 20 side), and the vertical bra 33 (see FIG. 4) is inserted into and mounted on the vertical bra holding portion 41f. Here, the vertical bra 33 is not sandwiched by the vertical bra holding portion 41f, but is inserted into the vertical bra holding portion 41f through a slight gap. As a result, the vertical bra 33 can move in the longitudinal direction of the wiper blade 10 with respect to the vertical bra holding portion 41f.

Further, as shown in FIG. 5, convex portions 41g are provided between the pair of vertical bra holding portions 41f along the longitudinal direction of the pair of side walls 41c. Each of these convex portions 41g protrudes toward the inside of the connecting main body 41 (blade rubber 20 side). That is, the convex portion 41g projects in the wiping direction of the wiper blade 10. Specifically, the size of the convex portion 41 g is set to a predetermined height dimension H (for example, about 3 mm) and a predetermined width dimension L (for example, about 7 mm).

Then, the pair of convex portions 41g provided on the connecting main body 41 enter and engage with the center concave portion 33a (see FIG. 4) of the pair of vertical bras 33, respectively. When the convex portion 41g and the center concave portion 33a are engaged with each other, the vertical bra 33 is completely held by the pair of vertical bra holding portions 41f.

This prevents the pair of vertical bras 33 from moving in the longitudinal direction of the wiper blade 10 with respect to the connecting main body 41.

Further, between the vertical bra holding portions 41f along the lateral direction of the connecting main body 41, the main body portion 21 of the blade rubber 20, the bridging portion 42b of the cover member 42, and the connecting wall 42c are accommodated, respectively. 41h is formed. As a result, the sub-body portion 22 of the blade rubber 20 is arranged between the pair of vertical bras 33.

Further, holder accommodating portions 41k are provided on both sides of the connecting main body 41 in the longitudinal direction. The holder accommodating portion 41k includes an end wall 41 m extending in the lateral direction of the connecting main body 41, and the end portion of the holder member 30 is abutted against the end wall 41 m. As a result, the end portion of the holder member 30 is accommodated in the holder accommodating portion 41k, the end portion of the holder member 30 is obscured, and the appearance of the wiper blade 10 is improved.

As shown in FIG. 4, the cover member 42 includes a pair of flat plate portions 42a. These flat plate portions 42a are provided so as to close the space between the pair of holder members 30, thereby preventing the inside of the connecting main body 41 from being exposed to the outside. The blade rubber 20 is arranged between the pair of flat plate portions 42a along the lateral direction (wiping direction of the wiper blade 10) of the cover member 42.

Four holding claws HN are integrally provided on the connecting main body 41 side of the pair of flat plate portions 42a. These holding claws HN are composed of a pair of protrusions T, and the holding claws HN are arranged at predetermined intervals in the longitudinal direction of the flat plate portion 42a. Then, the pair of protrusions T forming the holding claw HN sandwich the pair of vertical bras 33 from both sides of the wiper blade 10 in the wiping direction (short direction) in a state where the wiper blade 10 is assembled, and the pair of protrusions T. It is held so that it does not come off from T (holding claw HN).

Further, the pair of flat plate portions 42a are fitted to the pair of side walls 41c at the portion of the connecting main body 41 where the vertical holding portion 41f is provided (see FIG. 5). That is, the cover member 42 is fixed to the connecting main body 41 by fitting. Therefore, in the state where the wiper blade 10 is assembled, the cover member 42 is in a state where the movement of the wiper blade 10 in the wiping direction is restricted with respect to the connecting main body 41. That is, the cover member 42 is fixed to the connecting main body 41 without rattling in the wiping direction of the wiper blade 10.

In this way, the cover member 42 is fixed to the connecting body 41 without rattling in the wiping direction of the wiper blade 10, and the vertical bra 33 is sandwiched by the four holding claws HN from both sides in the wiping direction of the wiper blade 10. From this point, the vertical bra 33 is restricted from moving in the wiping direction of the wiper blade 10 with respect to the connecting main body 41.

When the wiper blade 10 is assembled, the convex portion 41 g provided on the connecting main body 41 and the holding claw HN provided on the cover member 42 are provided at different positions in the longitudinal direction of the wiper blade 10, respectively. In other words, the convex portion 41 g and the holding claw HN do not overlap each other in the wiping direction of the wiper blade 10. As a result, an increase in the width dimension of the wiper blade 10 (arm connecting member 40) is effectively suppressed.

Further, between the pair of flat plate portions 42a, three bridging portions 42b for connecting and integrating the two are provided. Each of these bridging portions 42b is formed in a substantially U-shape, and is arranged at predetermined intervals with respect to the longitudinal direction of the cover member 42. The bridging portion 42b projects toward the connecting main body 41 side of the flat plate portion 42a, that is, the side where the holding claw HN is provided.

Further, on the bottom side of these bridging portions 42b, a connecting wall 42c for connecting the adjacent bridging portions 42b is integrally provided. The main body portion 21 of the blade rubber 20 comes into contact with the inside of the connecting wall 42c (on the windshield 11 side).

In this way, the main body portion 21 is housed inside the bridging portion 42b and is pressed toward the windshield 11 side by the connecting wall 42c. Therefore, the blade rubber 20 can be accurately curved according to the curved shape of the vertical bra 33, and the entire longitudinal direction of the lip portion 24 is uniformly adhered to the windshield 11, and thus sufficient wiping performance is ensured. ..

Further, each of the pair of flat plate portions 42a is provided with four second holding claws 42d. These second holding claws 42d project from the respective flat plate portions 42a in the lateral direction of the cover member 42 and are arranged so as to face each other. The second holding claws 42d are arranged so as to narrow the distance between the pair of flat plate portions 42a and sandwich the subbody portions 22 from both sides in the lateral direction of the blade rubber 20.

In this way, the cover member 42 supports (holds) the blade rubber 20 at the portion of the arm connecting member 40 provided at the central portion in the longitudinal direction of the wiper blade 10. In other words, the cover member 42 exhibits the same function as the holder member 30, that is, the blade rubber holding function, in the portion of the arm connecting member 40.

As shown in FIGS. 1, 2 and 6, a pair of cap members 50 are attached to the longitudinal end portions of the holder member 30. These cap members 50 cover one end in the longitudinal direction of the holder member 30 and cover the end in the longitudinal direction of a pair of vertical bras 33 (see FIG. 10) protruding from one end in the longitudinal direction of the holder member 30. Further, the pair of cap members 50 prevent the blade rubber 20 from falling off from the holder member 30.

Here, the cap member 50 is fixed to the longitudinal end of the pair of vertical bras 33 protruding from one end of the holder member 30 in the longitudinal direction. Specifically, as shown in FIG. 10, engaging recesses (recesses) 33b are provided at portions of the pair of vertical bras 33 protruding from the holder member 30. These engaging recesses 33b are formed by penetrating the vertical plate 33 formed in a long plate shape in the plate thickness direction and cutting out in a substantially U shape in the width direction. A pair of engaging protrusions 51f (see FIGS. 6 and 7) provided on the cap member 50 are inserted into the respective engaging recesses 33b and are engaged with each other. As a result, the cap member 50 is fixed to the pair of vertical bras 33 in a state of being prevented from coming off.

As shown in FIGS. 2 and 6, the cap member 50 includes an end cap 51 and a rectifying member 52. The end cap 51 is formed in a substantially bag shape by a resin material such as plastic, and inside the end cap 51, a pair of vertical bras 33 projecting from a longitudinal end portion of the holder member 30 and a longitudinal end portion of the holder member 30. The longitudinal end of the plastic is intruded.

The rectifying member 52 is made of an elastomer or the like softer than the end cap 51, and is formed in a substantially U shape. The rectifying member 52 includes a rectifying main body 52a, and the rectifying main body 52a is fixed to the second wall portion 51c of the end cap 51. The rectifying main body 52a of the rectifying member 52 is provided so as to surround the periphery of the longitudinal end of the blade rubber 20, thereby causing the flow of air (running wind) at the longitudinal end of the blade rubber 20. It is in order.

At the end of the blade rubber 20 in the longitudinal direction, a so-called Karman vortex is likely to be generated on the back surface side (downstream side) opposite to the direction in which the traveling wind flows. When this Karman vortex is generated, the relevant part becomes negative pressure. Therefore, rainwater or the like is drawn into the portion, and a so-called mizuhiki phenomenon occurs. The occurrence of this watering phenomenon causes streaky unwiped residue on the windshield 11 after wiping. Therefore, in order to suppress the occurrence of such a watering phenomenon, in the present embodiment, a rectifying member 52 is provided at the longitudinal end of the blade rubber 20. As a result, the generation of Karman vortices as described above is suppressed, and the generation of streaky unwiped residue on the windshield 11 is suppressed.

Further, by using plastic or the like as the end cap 51, the soft rectifying member 52 is interposed between the end cap 51 and the windshield 11 while maintaining the holding force of the end cap 51 holding the vertical bra 33. , Interference between the end cap 51 and the windshield 11 can be prevented. Therefore, the interference noise between the end cap 51 and the windshield 11 can be reduced, and the impact on the end cap 51 due to the interference can also be reduced.

As shown in FIG. 10, the rectifying main body 52a is integrally provided with a pair of fitting projections 52b. These fitting protrusions 52b are fitted and fixed to a pair of fitting recesses 51t provided in the end cap 51. Then, the rectifying member 52 is firmly fixed to the end cap 51 by fitting the pair of fitting protrusions 52b into the pair of fitting recesses 51t and using a fixing means (not shown) such as an adhesive. ing.

As shown in FIGS. 6 to 8, the end cap 51 includes a bottom wall portion 51a. The bottom wall portion 51a constitutes the facing wall portion in the present invention, and is adapted to face one end of the holder member 30 (see FIG. 2) in the longitudinal direction from the longitudinal direction of the holder member 30. ..

Further, the end cap 51 includes a pair of side wall portions 51i protruding from the bottom wall portion 51a in the longitudinal direction of the blade rubber 20, a first wall portion 51b, and a second wall portion 51c. The pair of side wall portions 51i are provided at both ends of the bottom wall portion 51a along the lateral direction (left-right direction in FIG. 6) of the blade rubber 20. The first wall portion 51b is provided at the end of the bottom wall portion 51a and the pair of side wall portions 51i along the direction from the lip portion 24 of the blade rubber 20 toward the main body portion 21 (upward direction in FIG. 6). The second wall portion 51c is provided at the end of the bottom wall portion 51a and the pair of side wall portions 51i along the direction from the main body portion 21 of the blade rubber 20 toward the lip portion 24 (lower direction in FIG. 6). The side wall portions 51i and the first and second wall portions 51b and 51c are provided so as to surround the bottom wall portion 51a, respectively, and extend in the longitudinal direction (left-right direction in FIG. 7) of the holder member 30. There is.

A pair of arm portions 51d are integrally provided on the bottom wall portion 51a. These arm portions 51d are arranged inside the end cap 51 (a portion surrounded by a bottom wall portion 51a and a side wall portion 51i, first and second wall portions 51b and 51c, and one end portion in the longitudinal direction of the holder member 30). , Each is formed in an elongated flat plate shape. Then, as shown in FIG. 7, the base end portions of the pair of arm portions 51d are integrally provided on the bottom wall portion 51a, and the tip portions of the pair of arm portions 51d are closer to the opening 51e of the end cap 51 ( It is located on the right side of the figure). That is, the pair of arm portions 51d project from the bottom wall portion 51a in the longitudinal direction of the holder member 30.

The tip end side of the pair of arm portions 51d is a free end that is not restricted by anything. As a result, each arm portion 51d can be bent by the application of an external force (see the broken line arrow M8 in FIG. 7). Then, as shown in FIG. 6, the pair of arm portions 51d are provided side by side on both sides (left and right sides in FIG. 6) of the blade rubber 20 in the wiping direction so as to correspond to each of the pair of vertical bras 33. There is. That is, the pair of arm portions 51d are arranged side by side along the lateral direction of the holder member 30.

Further, an engaging convex portion (convex portion) 51f that enters the engaging concave portion 33b provided in the vertical bra 33 is integrally provided in a portion of the pair of arm portions 51d near the center in the longitudinal direction. These engaging convex portions 51f project toward the second wall portion 51c of the end cap 51 at a predetermined height dimension H1 and gradually toward the holder member 30 side (right side in FIG. 7). It is formed in a substantially slide-like shape so as to be thin.

As described above, the pair of engaging protrusions 51f project toward the windshield 11 in the direction intersecting the longitudinal direction of the holder member 30 (protruding downward in FIG. 4), and the pair of engaging protrusions 51f. The holder member 30 side of the portion 51f has a tapered shape. This makes it easier for the engaging convex portion 51f to enter the engaging concave portion 33b, and by extension, the work of assembling the cap member 50 to the pair of vertical bras 33 can be easily performed.

Further, a pair of end accommodating portions 51g in which the longitudinal end portions of the vertical bra 33 are accommodated are formed between the pair of arm portions 51d and the second wall portion 51c. These end accommodating portions 51g are also provided corresponding to each of the pair of vertical bras 33, and are provided on both sides of the blade rubber 20 in the wiping direction as shown in FIG. That is, the pair of end accommodating portions 51g are arranged side by side along the lateral direction of the holder member 30.

The pair of end accommodating portions 51g are each formed in the same shape. The end accommodating portion 51g is formed by a second wall portion 51c, an arm portion 51d, a first support portion 51h, a second support portion 51k, and a third support portion 51m. Here, the second wall portion 51c supports the vertical bra 33 from the windshield 11 side, and the arm portion 51d supports the vertical bra 33 from the first wall portion 51b side.

Further, as shown in FIG. 6, the blade rubber 20 side of the first support portion 51h is opened, and the cross section thereof is substantially U-shaped. The first support portion 51h sandwiches the side of the vertical bra 33 opposite to the blade rubber 20 side in the width direction from both sides in the plate thickness direction. Specifically, the first support portion 51h supports the vertical bra 33 from both sides in the thickness direction (upper and lower sides in the drawing), and to one side in the width direction of the vertical bra 33 (the side opposite to the blade rubber 20 side). It regulates the movement of.

The first support portion 51h is provided at the same position as the engaging convex portion 51f in the longitudinal direction of the holder member 30. As a result, the vertical bra 33 is supported without rattling in the portion of the first support portion 51h, and thus the rattling of the vertical bra 33 is suppressed also in the portion of the engaging convex portion 51f. Therefore, it is possible to prevent an excessive force from being applied to the engaging convex portion 51f, prevent early damage to the engaging convex portion 51f, and the cap member 50 does not easily come off from the pair of vertical bras 33.

Further, as shown in FIG. 7, the second support portion 51k is predetermined from the second wall portion 51c toward the arm portion 51d at the innermost side (bottom wall portion 51a side) of the end accommodating portion 51g. The height dimension is H2 (H2 <H1). That is, the second support portion 51k protrudes toward the side opposite to the windshield 11 side. Here, the windshield 11 side refers to the direction from the main body portion 21 of the blade rubber 20 toward the lip portion 24 (lower direction in FIG. 7). The second support portion 51k is arranged adjacent to the longitudinal end portion of the vertical bra 33. Then, the second support portion 51k is adapted to support the longitudinal end portion of the vertical bra 33 in the longitudinal direction of the vertical bra 33.

As a result, the amount of movement (mounting depth) of the cap member 50 with respect to the pair of vertical bras 33 is regulated. Therefore, by attaching the cap member 50 to the pair of vertical bras 33 until they do not move, the engaging convex portion 51f can be easily and surely engaged with the engaging concave portion 33b. Therefore, the cap member 50 can be reliably arranged at a regular position with respect to the pair of vertical bras 33.

Further, as shown in FIG. 6, the third support portion 51 m is provided between the vertical bra 33 and the blade rubber 20 in the lateral direction (left-right direction in FIG. 6) of the holder member 30, and the holder member 30. It is provided at the same position as the engaging convex portion 51f in the longitudinal direction. That is, the third support portion 51m faces the first support portion 51h and the engaging convex portion 51f in the lateral direction of the holder member 30, respectively.

The third support portion 51m protrudes from the second wall portion 51c toward the arm portion 51d at a predetermined height (approximately the same height dimension as the height dimension H2 of the second support portion 51k), and the vertical bra 33 The blade rubber 20 side in the width direction (left-right direction in FIG. 6) is supported toward the first support portion 51h. That is, the vertical bra 33 is sandwiched by the first support portion 51h and the third support portion 51m from the width direction of the vertical bra 33. In other words, the third support portion 51m regulates the vertical bra 33 from moving to the other side (blade rubber 20 side) in the width direction.

As a result, the rattling of the vertical bra 33 is suppressed in the portion of the third support portion 51m as well as the portion of the first support portion 51h. Therefore, even with this, the rattling of the vertical bra 33 at the portion of the engaging convex portion 51f is effectively suppressed.

Here, as shown in FIG. 6, the second wall portion 51c is provided with a pair of third holding claws 51p for holding the main body portion 21 of the blade rubber 20. The end accommodating portions 51g are arranged so as to face each other on both sides of the portion of the third holding claw 51p (the portion of the blade rubber 20) as the center. As described above, the longitudinal end portions of the pair of vertical bras 33 are individually accommodated with respect to the end accommodating portions 51 g independently provided with the blade rubber 20 as the boundary.

At the end cap 51, the main body 21 of the blade rubber 20 is pressed toward the windshield 11 by the tip of the pressing protrusion 51s. The base end portion of the pressing protrusion 51s is integrally provided with the first wall portion 51b inside the end cap 51.

Further, as shown in FIG. 7, a pair of tapered surface TPs for guiding the accommodating operation of the vertical bra 33 with respect to the end accommodating portion 51g are provided on the inlet side (right side in the drawing) of the pair of end accommodating portions 51g. ing. These tapered surface TPs greatly open the inlet side of the end accommodating portion 51g, whereby when assembling the wiper blade 10, the longitudinal end portion of the vertical bra 33 is set with respect to the end accommodating portion 51g. It can be easily accommodated.

Further, as shown in FIGS. 2 and 7, the bottom wall portion 51a of the end cap 51 is provided with a fitting recess 51t corresponding to each end accommodating portion 51g. A pair of fitting protrusions 52b (see FIG. 10) provided in the rectifying member 52 forming the cap member 50 are fitted and fixed in these fitting recesses 51t. The pair of fitting recesses 51t communicate with each other inside the pair of end accommodating portions 51g, and when the end cap 51 is viewed alone from the longitudinal direction of the holder member 30, the second support portion 51k It is visible (exposed to the outside).

Further, as shown in FIG. 7, when the engaging convex portion 51f and the second support portion 51k are viewed from the longitudinal direction of the holder member 30, they do not overlap each other. That is, when the height dimension H1 of the engaging convex portion 51f and the height dimension H2 of the second support portion 51k are added, the height dimension H3 of the end accommodating portion 51g is obtained (H3 = H1 + H2). With such a height relationship, the end cap 51 can be manufactured by a plurality of first, second, and third molds 60, 70, and 80 as shown in FIG.

Next, the manufacturing procedure of the end cap 51 formed as described above will be described in detail with reference to the drawings.

The end cap 51 is formed by performing injection molding using the first mold 60, the second mold 70, and the third mold 80 as shown in FIG. The first mold 60 and the third mold 80 substantially form the outer shape of the end cap 51, and the second mold 70 substantially forms the inner shape of the end cap 51.

The third mold 80 is provided with a first protrusion 81 for forming an end accommodating portion 51 g (see FIG. 7) of the end cap 51. Further, the second mold 70 is also provided with a second protrusion 71 for forming the end accommodating portion 51 g of the end cap 51.

Then, the first mold 60, the second mold 70, and the third mold 80 are brought close to each other as shown by the broken line arrows M2 and M3 in FIG. 9A, respectively, as shown in FIG. 9B. Butt against each other. Then, the first protrusion 81 and the second protrusion 71 come into contact with each other and are overlapped with each other. As a result, a cavity CA forming the end cap 51 is formed between the first mold 60, the second mold 70, and the third mold 80.

Further, the first mold 60 is integrally provided with a dispenser DP that supplies the molten resin MR to the cavity CA. Then, by driving the dispenser DP, the molten resin MR is supplied at a predetermined pressure to the supply passage 61 provided in the first mold 60 as shown by the broken line arrow M4. Then, as shown by the broken line arrow M5, the molten resin MR is gradually filled in the cavity CA. In this way, the end cap 51 is formed by the first mold 60, the second mold 70, and the third mold 80.

At this time, the portion where the first protrusion 81 and the second protrusion 71 are in contact with each other and overlapped with each other becomes the end accommodating portion 51 g. Specifically, as shown in FIG. 9B, the engaging convex portion 51f (see FIG. 7) is formed by the longitudinal tip portion of the first protrusion 81 and the longitudinal central portion of the second protrusion 71. It is formed. Further, a second support portion 51k (see FIG. 7) is formed by the longitudinal base end portion of the first protrusion 81 and the longitudinal tip end portion of the second protrusion 71.

After that, the molten resin MR is cured by cooling the first mold 60, the second mold 70, and the third mold 80 with cooling water or the like (not shown). Next, the first mold 60, the second mold 70, and the third mold 80 are separated from each other in the reverse procedure of the above to release the completed end cap 51 (see FIG. 7).

As a result, the molding of the end cap 51 is completed. Since the meat stealing portion SP (see FIGS. 6 and 7), which is a relatively large space, is formed inside the end cap 51, the occurrence of defects such as sink marks is effectively suppressed.

Next, the procedure for assembling the wiper blade 10 formed as described above, particularly the procedure for assembling the cap member 50 to the longitudinal end of the holder member 30, will be described in detail with reference to the drawings.

First, as shown in FIG. 10, a wiper blade sub-assy SA assembled through another assembly step is prepared. Here, the wiper blade sub-assy SA refers to a wiper blade in a state in which the cap member 50 and the blade rubber 20 are not attached and are in the process of being assembled. Further, a blade rubber 20 manufactured through another manufacturing process, an end cap 51, and a rectifying member 52 are prepared.

Then, as shown by the broken line arrow M6, the rectifying member 52 is attached to the end cap 51. At this time, the pair of fitting protrusions 52b of the rectifying member 52 are fitted into the pair of fitting recesses 51t of the end cap 51, respectively. Further, the rectifying body portion 52a and the second wall portion 51c are adhered to each other with a very small amount of adhesive. As a result, the end cap 51 and the rectifying member 52 are integrated, and the assembly of the cap member 50 is completed.

Next, as shown by the broken line arrow M7, the cap member 50 faces the wiper blade sub-assy SA. At this time, the opening 51e side of the cap member 50 is directed toward the longitudinal end of the pair of vertical bras 33 exposed at the longitudinal end of the wiper blade sub-assy SA. Then, the longitudinal end portions of the pair of vertical bras 33 are inserted into the pair of end accommodating portions 51g (see FIG. 6) inside the cap member 50.

Then, as shown by the broken line arrow M8 in FIG. 7, while the pair of arm portions 51d bends, the pair of engaging convex portions 51f rides on the longitudinal ends of the pair of vertical bras 33, and then the pair of engaging portions are engaged. Each enters the recess 33b. At this time, since the longitudinal end portions of the pair of vertical bras 33 are guided by the pair of tapered surfaces TP and by the pair of tapered engaging convex portions 51f, the pair of end portions accommodating portions 51g are guided. The longitudinal ends of the pair of vertical bras 33 can be easily inserted.

After that, as shown by the broken line arrow M9 in FIG. 7, the cap member 50 is attached to the pair of vertical bras 33 until they do not move, so that the longitudinal end portions of the pair of vertical bras 33 become the cap member 50. It abuts on each of the pair of second support portions 51k. As a result, the engaging convex portion 51f completely enters the engaging concave portion 33b and is securely engaged. Similarly, the cap member 50 is mounted on the opposite side (not shown) of the wiper blade sub-assy SA in the longitudinal direction. As a result, the assembly (mounting) of the cap member 50 to the wiper blade sub-assy SA is completed.

After that, the longitudinal end of the blade rubber 20 faces the attachment / detachment hole OP (see FIG. 2) formed between the cap member 50 and the holder member 30 as shown by the broken line arrow M10 in FIG. No. Then, the end portion in the longitudinal direction of the blade rubber 20 is elastically deformed and inserted into the attachment / detachment hole OP, and the main body portion 21 of the blade rubber 20 is gradually attached to the holding groove 31a of the holder member 30. As a result, the blade rubber 20 is held by the holder member 30, and the assembly of the wiper blade 10 is completed.

As described in detail above, according to the wiper blade 10 according to the present embodiment, the end cap 51 has a bottom wall portion 51a that faces one end portion of the holder member 30 in the longitudinal direction from the longitudinal direction of the holder member 30. A pair of arm portions 51d provided on the bottom wall portion 51a, projecting from the bottom wall portion 51a in the longitudinal direction of the holder member 30 and arranged side by side in the lateral direction of the holder member 30, and a pair of arm portions 51d. Each of them has an engaging convex portion 51f that protrudes in a direction intersecting the longitudinal direction of the holder member 30 and enters the engaging concave portion 33b provided in each of the pair of vertical bras 33.

As a result, the end cap 51 can be directly fixed (directly hooked) to the pair of vertical bras 33, and the number of parts can be reduced. Further, each of the pair of arm portions 51d can be individually fixed to each of the pair of vertical bras 33. Therefore, as compared with the conventional fixed structure, the number of parts can be reduced and the assembling property can be improved, and the manufacturing cost can be suppressed.

Further, according to the wiper blade 10 according to the present embodiment, the end cap 51 has a pair of side walls protruding in the longitudinal direction of the blade rubber 20 at both ends of the bottom wall portion 51a along the lateral direction of the blade rubber 20. The first support portion 51h is provided at the same position as the engaging convex portion 51f in the longitudinal direction of the blade rubber 20 on the pair of side wall portions 51i, and the first support portion 51h is a pair of vertical bras. 33 is sandwiched from both sides of the vertical bra 33 in the plate thickness direction.

As a result, the rattling of the vertical bra 33 is suppressed in the portion of the first support portion 51h, and the rattling of the vertical bra 33 is suppressed in the portion of the engaging convex portion 51f as well. Therefore, an unreasonable force is not applied to the engaging convex portion 51f, and early damage to the engaging convex portion 51f can be suppressed. Therefore, it is possible to prevent the cap member 50 from being easily detached from the pair of vertical bras 33.

Further, according to the wiper blade 10 according to the present embodiment, the end cap 51 includes a second support portion 51k that supports the longitudinal end portions of the pair of vertical bras 33 in the longitudinal direction.

As a result, the amount of movement (mounting depth) of the cap member 50 with respect to the pair of vertical bras 33 can be regulated, and the cap member 50 can be reliably arranged at a regular position with respect to the pair of vertical bras 33. Further, the engaging convex portion 51f can be reliably engaged with the engaging concave portion 33b only by attaching the cap member 50 to the pair of vertical bras 33 until they do not move.

Further, according to the wiper blade 10 according to the present embodiment, the engaging convex portion 51f is projected toward the windshield 11, and the second support portion 51k is directed toward the side opposite to the windshield 11 side. The engaging convex portion 51f and the second support portion 51k are arranged at positions that do not overlap each other when viewed from the longitudinal direction of the holder member 30.

Thereby, the end cap 51 can be easily manufactured by the pair of the first and second molds 60 and 70 as shown in FIG.

Further, according to the wiper blade 10 according to the present embodiment, the second support portion 51k is exposed to the outside when the end cap 51 is viewed alone from the longitudinal direction of the holder member 30.

Also with this, the end cap 51 can be easily manufactured by the pair of the first and second molds 60 and 70 as shown in FIG.

Further, according to the wiper blade 10 according to the present embodiment, the end cap 51 includes a third support portion 51 m provided between the pair of vertical bras 33 and the blade rubber 20, and the pair of vertical bras 33 is the first. It is sandwiched by the 1 support portion 51h and the 3rd support portion 51m from the width direction of the vertical rubber 33.

As a result, rattling of the vertical bra 33 can be suppressed in the portion of the third support portion 51m as well as the portion of the first support portion 51h. Therefore, the rattling of the pair of vertical bras 33 in the width direction (left-right direction in FIG. 6) is further suppressed, and this also effectively suppresses the rattling of the vertical bras 33 in the portion of the engaging convex portion 51f. It can be suppressed.

It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist thereof.

For example, the rectifying member 52 and the end cap 51 may be integrally molded by two-color molding. As a result, the step of fitting the pair of fitting protrusions 52b into the pair of fitting recesses 51t and using fixing means such as an adhesive can be omitted. In this case, in the procedure for assembling the wiper blade 10, the attachment step of the broken line arrow M6 shown in FIG. 10 in the above embodiment is omitted, and as shown by the broken line arrow M7, the integrally molded cap member 50 is attached to the wiper blade subassy. It starts from the process of facing SA.

Further, in the above embodiment, the wiper blade 10 has been described as wiping the windshield 11 as a windshield, but the present invention is not limited to this and is also applicable to a wiper blade that wipes the rear glass as a windshield. can do.

Furthermore, the present invention can be applied not only to wiper blades provided in vehicles such as automobiles, but also to wiper blades provided in railway vehicles, aircraft, ships, construction machinery, and the like.

In addition, the material, shape, dimensions, number, installation location, etc. of each component in the above embodiment are arbitrary as long as the present invention can be achieved, and are not limited to the above embodiment.

10 Wiper blade 11 Windshield (Windshield)
20 Blade rubber 21 Main body (main body)
22 Subbody part 23 Neck part 24 Lip part 30 Holder member 31 Holder body 31a Holding groove (holding part)
31b 1st holding claw 31c Accommodating part 31d Rubber pressing part 31e Holder pressing part 32 Fin part 32a Top 33 Vertibra (leaf spring)
33a Center recess 33b Engagement recess (recess)
40 Arm connecting member 41 Connecting body 41a Base part 41b Bottom wall 41c Side wall 41d Clip accommodating part 41e Wall part 41f Vertibra holding part 41g Convex part 41h Accommodating groove 41k Holder accommodating part 41m End wall 42 Cover member 42a Flat plate part 42b Bridging part 42c Wall 42d 2nd holding claw 50 Cap member 51 End cap 51a Bottom wall part (opposing wall part)
51b 1st wall 51c 2nd wall 51d Arm 51e Opening 51f Engagement convex (convex)
51g End accommodating part 51h 1st support part 51i Side wall part 51k 2nd support part 51m 3rd support part 51p 3rd holding claw 51s Pressing protrusion 51t Fitting recess 52 Rectifying member 52a Rectifying body 52b Fitting protrusion 60 1st metal Mold 61 Supply passage 70 2nd mold 71 2nd protrusion 80 3rd mold 81 1st protrusion CA cavity DP dispenser HN holding claw MR molten resin OP attachment / detachment hole PN support pin SA wiper blade sub-assie SP meat stealing part T Protrusion TP Tapered surface WA Wiper arm

Claims (6)

A wiper blade that is mounted on a swing-driven wiper arm and reciprocally wipes on the windshield.
A blade rubber having a lip portion in contact with the windshield and a main body portion integrally provided with the lip portion.
A holder member having a holding portion for holding the main body portion and
A pair of accommodating portions provided on the holder member and arranged on both sides of the holding portion around the holding portion.
A pair of leaf springs, each housed in the pair of accommodating portions, formed in a plate shape along the longitudinal direction of the blade rubber, and provided with a recess at the end in the longitudinal direction.
An arm connecting member fixed to the pair of leaf springs and to which the wiper arm is connected,
An end cap that covers one end of the holder member in the longitudinal direction,
With
The end cap
An opposing wall portion facing the holder member from the longitudinal direction with respect to one end portion in the longitudinal direction.
A pair of arms protruding from the facing wall portion in the longitudinal direction of the holder member and arranged side by side in the lateral direction of the holder member.
A convex portion that protrudes from the pair of arms in a direction intersecting the longitudinal direction of the holder member and enters the concave portion provided in each of the pair of leaf springs.
A wiper blade characterized by having. The end cap
A pair of side wall portions provided at both ends of the facing wall portion along the lateral direction of the blade rubber and protruding in the longitudinal direction of the blade rubber, and
A first support portion provided at the same position as the convex portion in the longitudinal direction of the blade rubber in the pair of side wall portions.
With
The wiper blade according to claim 1, wherein the first support portion sandwiches the pair of leaf springs from both sides in the leaf thickness direction of the leaf springs. The wiper blade according to claim 2, wherein the end cap includes a second support portion that supports the longitudinal end portions of the pair of leaf springs in the longitudinal direction of the leaf springs. The convex portion protrudes toward the windshield.
The second support portion is projected toward the side opposite to the windshield side.
The wiper blade according to claim 3, wherein the convex portion and the second support portion are arranged at positions where they do not overlap each other when viewed from the longitudinal direction of the holder member. The wiper blade according to claim 3 or 4, wherein the second support portion is visible when the end cap is viewed alone from the longitudinal direction of the holder member. The end cap includes a third support portion provided between the pair of leaf springs and the blade rubber.
According to any one of claims 2 to 5, the pair of leaf springs are sandwiched by the first support portion and the third support portion from the width direction of the leaf spring. The wiper blade described.

Images