JP2012106520A - Wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper blade that tightly regulates movement of a blade rubber.SOLUTION: In a rubber holding part 31a of a holder member 13, a stretched part 33 is formed which is stretched between holding claws 32 in a width direction, and comes in contact with a top surface 41b of a base 41 in the upper part of a blade rubber 14 to transmit to the blade rubber a pressing force toward a wiping surface G to be applied to the holder member 13. On the top surface 41b of the base 41, first and second engaging protrusions 51 and 52 are formed which are engaged with both ends in the longitudinal direction of the stretched part 33 of the first rubber holding part 31a.

Description

  The present invention relates to a wiper blade for wiping a windshield of a vehicle, for example.

  The vehicle wiper includes a wiper arm that operates based on driving of a wiper motor, and a wiper blade that is supported at the tip of the wiper arm. For example, in the wiper blade shown in Patent Document 1, a holder member (lever) whose longitudinal center is connected to the tip of the wiper arm, a blade rubber that is held by the holder member and wipes the wiping surface, A backing made of a spring material having rigidity and having a central portion curved in a convex shape toward the side opposite to the wiping surface and fitted in an attachment groove formed in the longitudinal direction of the blade rubber is provided. Rubber holders are formed at both ends in the longitudinal direction of the holder member, and the rubber holders have holding claws that make a pair in the width direction (wiping direction). The blade rubber has a base portion formed in the longitudinal direction at the upper portion thereof, and the base portion is held between the holding claws of each rubber holding portion along the longitudinal direction so that the base portion is held by each rubber holding portion. It is designed to be gripped in the width direction by a nail. The blade rubber protrudes in the longitudinal direction from each rubber holding portion, and the protruding portion is configured as a follow-up end portion that freely follows the curvature of the wiping surface by the elastic force of the backing. In such a wiper blade, the height of the wiper blade can be kept low compared to the wiper blade having the same length of the holder member and blade rubber in which a plurality of levers are connected in a hierarchical structure, thereby preventing the driving view from being obstructed. This is advantageous in that it can be made inexpensive by reducing the number of parts. Further, the wiper arm is provided with a spring for pressing the wiper blade against the wiping surface, and the holder member that receives the force of the spring from the tip of the wiper arm holds the blade rubber with the holding claws of each rubber holding portion. It presses against the wiping surface.

JP 2005-22632 A

  By the way, in the wiper blade as described above, a pair of engaging protrusions protruding in the width direction are formed side by side in the longitudinal direction in a holding groove formed on the side surface of the blade rubber in the width direction and into which the holding claws are inserted. And between the pair of engaging projections, the tip of one of the holding claws of the two rubber holding portions at both ends of the holder member is fitted and engaged in the longitudinal direction. Thus, the movement of the blade rubber in the longitudinal direction is restricted, and the blade rubber is prevented from coming off in the longitudinal direction. According to such a configuration, by using the holding claws, the movement restriction can be realized without separately adding a configuration for restricting the movement of the blade rubber in the longitudinal direction to the holder member.

  In such a wiper blade, in order to tighten the movement restriction of the blade rubber, it is conceivable that the contact area in the engaging direction between the tip end portion of the holding claw and the engaging convex portion is widened. However, since the protrusion amount in the width direction of the engaging convex portion is set in the holding groove into which the holding claw is inserted, it cannot be increased so much. For this reason, it is difficult to increase the contact area in the longitudinal direction between the front end portion of the holding claw and the engaging convex portion.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wiper blade capable of strengthening the movement restriction of the blade rubber.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a blade rubber for wiping the wiping surface, a predetermined rigidity, and a central portion curved in a convex shape toward the side opposite to the wiping surface. And a backing made of a spring material fitted in a mounting groove formed in the longitudinal direction of the blade rubber, and a longitudinal center connected to the tip of the wiper arm, and extending toward both sides of the blade rubber in the longitudinal direction. An elongate holder member for holding a base portion formed in the longitudinal direction of the blade rubber by a first rubber holding portion and a second rubber holding portion respectively provided at a portion on the first end side and the second end side; Each of the rubber holding portions has a holding claw that makes a pair in the width direction, and the base portion of the blade rubber is inserted between the holding claws of the rubber holding portion in the longitudinal direction to hold the holding claw A wiper blade configured to follow the curve of the wiping surface by projecting the blade rubber outward in the longitudinal direction from the first and second rubber holding portions of the holder member. Each of the rubber holding portions is spanned in the width direction between the holding claws, and presses the wiping surface side applied to the holder member by contacting the upper surface of the base portion with the blade. A erection portion for transmitting to the rubber is formed, and the upper surface of the base portion is engaged with a first outer end portion in the longitudinal direction of the erection portion of the first rubber holding portion or the first end of the holder member in the longitudinal direction. An engaging convex portion and a second engaging convex portion that engages in a longitudinal direction with an inner end portion in the longitudinal direction of the installation portion of the first rubber holding portion are provided.

  According to the present invention, the first and second engaging convex portions provided on the upper surface of the base portion of the blade rubber are both longitudinal ends of the erection portion of the first rubber holding portion (or the first end of the holder member and the erection portion of the erection portion). (Longitudinal inner end portion) and the longitudinal direction, respectively, thereby making it possible to regulate the movement of the blade rubber in the longitudinal direction. In other words, the movement restriction in the longitudinal direction of the blade rubber (preventing removal of the blade rubber from the holder member) is realized by using the erection portion for pressing the blade rubber against the wiping surface or the longitudinal end portion of the holder member. be able to. In addition, since the upper surface of the base portion has a higher degree of design freedom than the side surface in the width direction of the blade rubber, it is easy to set the first and second engaging convex portions large in the width direction on the upper surface of the base portion. Therefore, it is possible to tighten the movement restriction in the longitudinal direction of the blade rubber as compared with the structure in which the movement restriction of the blade rubber is controlled by the front end portion of the holding claw and the engaging convex portion formed in the holding groove. Become.

  According to a second aspect of the present invention, in the wiper blade according to the first aspect, of the first and second engaging convex portions, the second engaging convex portion disposed on the front side in the insertion direction of the blade rubber. The height of the part is set to be smaller than the height of the first engaging convex part.

  In the present invention, when the blade rubber is inserted into the rubber holding portion of the holder member in the longitudinal direction, the installation portion can easily get over the second engagement convex portion on the front side in the insertion direction. Can be easily assembled to the holder member.

  According to a third aspect of the present invention, in the wiper blade according to the first or second aspect, of the first and second engaging protrusions, the second engagement disposed on the front side in the insertion direction of the blade rubber. The dimension in the width direction of the joint protrusion is set to be smaller than the dimension in the width direction of the first engagement protrusion.

  In this invention, when the blade rubber is inserted into the rubber holding portion of the holder member in the longitudinal direction, it is possible to reduce friction when the erection portion gets over the second engagement convex portion on the front side in the insertion direction. It is possible to make it easier for the erection part to get over the second engagement convex part. As a result, the blade rubber can be easily assembled to the holder member.

  Therefore, according to the above-described invention, it is possible to tighten the movement restriction of the blade rubber.

The perspective view of the wiper for vehicles of this embodiment. The disassembled perspective view of the wiper for vehicles. (A) Top view of wiper blade, (b) Side view of wiper blade. (A) AA sectional view in Drawing 3 (b), (b) Sectional drawing along the longitudinal direction near the rubber holding part of the base end side. Sectional drawing which shows the wiper blade of another example.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a vehicle wiper 10 that wipes raindrops and the like adhering to a wiping surface G of a windshield of an automobile. The vehicle wiper 10 includes a wiper arm 11 connected to a vehicle (not shown), and a wiper blade 12 that is supported by the tip of the wiper arm 11 and arranged in contact with the wiping surface G. The wiper blade 12 swings back and forth by the operation of the wiper arm 11 based on the drive of a wiper motor (not shown), and performs wiping on the wiping surface G. The wiper blade 12 is pressed against the wiping surface G by a spring (not shown) provided on the wiper arm 11.

  As shown in FIGS. 1, 2, and 3A and 3B, the wiper blade 12 includes a long holder member 13 and a blade rubber 14 made of a rubber material held by the holder member 13. Has been. The blade rubber 14 is longer than the holder member 13 and is used to wipe the wiping surface G. The holder member 13 holds the blade rubber 14 at its middle portion in the longitudinal direction, and the blade rubber 14 projects from both longitudinal ends of the holder member 13 (first end 13a and second end 13b).

  The holder member 13 made of a resin material has an upper wall portion 21 and a side wall portion 22 that forms a pair in the width direction (wiping direction and orthogonal to the longitudinal direction). The part 22 constitutes the external appearance of the holder member 13. As shown in FIG. 4A, the longitudinal cross section of the holder member 13 is formed in a substantially U-shape that opens from the upper wall portion 21 and the side wall portion 22 to the wiping surface G side as a whole. Moreover, as shown in FIG.3 (b), the upper wall part 21 is curving gently downward (wiping surface G side) toward the longitudinal direction both ends, and the longitudinal direction both ends of the holder member 13 are: It has a shape that tapers in side view. Note that a gap S is provided between the side wall portion 22 and the blade rubber 14 at an intermediate portion in the longitudinal direction of the holder member 13.

  At the center in the longitudinal direction of the holder member 13, a rectangular opening 23 having a long side in the longitudinal direction is formed in the plan view shown in FIG. Between the opposing wall portions 23a in the width direction of the opening 23, a columnar connecting shaft 24 is fixed so as to be spanned. The opposing wall portion 23 a constitutes a part of the side wall portion 22 of the holder member 13. A connecting member 25 shown in FIG. 1 for connection with the distal end portion of the wiper arm 11 is fitted into the opening 23, and is attached to the connecting shaft 24 so as to be rotatable.

  On the other hand, the tip of the wiper arm 11 is formed in a U-hook shape having a free end on the wiping surface G side, and the tip is locked to the connecting shaft 24 via a connecting member 25 attached to the opening 23. The connecting member 25 is detachable. As shown in FIG. 1, the wiper arm 11 extends in the proximal direction of the wiper blade 12 from the distal end portion connected to the holder member 13.

  As shown in FIG. 3B, the holder member 13 includes a first rubber holding portion 31a in the vicinity of the base end portion (first end 13a) in the longitudinal direction and a first rubber holding portion 31a in the vicinity of the distal end portion (second end 13b). Each has two rubber holding portions 31b. The holder member 13 has a shape that extends further from the rubber holding portions 31 a and 31 b toward both ends in the longitudinal direction of the blade rubber 14.

  Each rubber holding part 31a, 31b has the same configuration as each other, and as shown in FIG. 4 (a), is constituted by a pair of holding claws 32 that make a pair in the width direction. Each holding claw 32 extends downward from each side wall portion 22 of the holder member 13 (wiping surface G side) and faces the holding wall portion 32a facing each other, and the inner side in the width direction (blade) from the tip (lower end) of the holding wall portion 32a. A holding piece 32b extending into the holding groove 41c of the rubber 14 is formed in an L-shaped cross section. The upper wall portion 21 and the side wall portions 22 also constitute part of the rubber holding portions 31a and 31b. Further, a spanning portion 33 is formed between the rubber holding portions 31a and 31b between the holding wall portions 32a so as to extend in the width direction. As shown in FIG. 4B, the erection part 33 has a rectangular cross-section with a long side in the longitudinal direction. The erection portion 33 is for transmitting the pressing force toward the wiping surface G received by the holder member 13 from the wiper arm 11 to the blade rubber 14.

  On the other hand, as shown in FIG. 4 (a), the base portion gripped in the width direction by the pair of holding claws 32 of the rubber holding portions 31a and 31b is provided on the upper portion of the blade rubber 14 (part on the side of the wiping surface). 41 is formed over the whole longitudinal direction. Mounting grooves 41a extending in the longitudinal direction are formed on both side surfaces of the base portion 41 in the width direction. Each of the mounting grooves 41a is fitted with a backing 42 made of a flat spring material having a predetermined rigidity and having a longitudinal central portion curved in a convex shape toward the side opposite to the wiping surface G. Yes. The backing 42 serves to disperse the pressing force applied to the wiping surface G received from the wiper arm 11 via the holder member 13 in the longitudinal direction. In addition, resin caps 43 for preventing the backing 42 from falling off are attached to both ends of the blade rubber 14.

  The base portion 41 of the blade rubber 14 is accommodated in an accommodation space inside the installation portion 33 and the pair of holding claws 32 (the sandwiching wall portion 32a and the holding piece 32b) in each rubber holding portion 31a, 31b. The upper surface 41b of the base 41 is in contact with the installation portion 33, the side surface in the width direction of the base 41 is in contact with the holding wall 32a, and the lower surface of the base 41 is in contact with the holding piece 32b, whereby the base 41 is in contact with each rubber holding portion 31a. , 31b so as to be enclosed. The holding pieces 32b are respectively inserted into holding grooves 41c formed at positions on the wiping surface G side of the mounting grooves 41a on both sides in the width direction of the blade rubber 14. The blade rubber 14 has a wiping portion 44 having an inverted triangular cross section that extends from the lower surface of the base portion 41 through a thin neck portion 41d. The wiping surface G is wiped by the wiper blade 12 operating in a state where the lower end of the wiping portion 44 is in contact with the wiping surface G.

  Further, as shown in FIGS. 1 and 3A and 3B, the blade rubber 14 protrudes further outward in the longitudinal direction than the rubber holding portions 31a and 31b of the holder member 13, respectively. The part constitutes a follow-up end X that freely follows the curve of the wiping surface G together with the backing 42 fitted in the mounting groove 41a. That is, each follower end X of the blade rubber 14 is a free end that is not held by the holder member 13, but follows the curvature of the wiping surface G by the elastic force of the backing 42. The rubber holding portions 31a and 31b are provided on the holder member 13 so as to be arranged at positions that divide the longitudinal direction of the blade rubber 14 into approximately three equal parts.

  As shown in FIG. 3B, a gap S is provided between the side wall portion 22 and the upper surface 41 b of the base portion 41 of the blade rubber 14 in the longitudinal intermediate portion of the holder member 13. Thereby, when the following end X of the blade rubber 14 to which the backing 42 is attached follows the wiping surface G in a curved manner, the upper surface of the central portion of the blade rubber 14 is not prevented from protruding in a convex shape (curved) The gap S is functioning (so as not to prevent following).

  Further, between the base portion 41 and the wiping portion 44, extending portions 45 that extend to both sides in the width direction are formed. The bent part (holding piece 32b) at the lower end of the holding claw 32 of each rubber holding part 31a, 31b is adapted to enter a groove part (holding groove 41c) formed by the base part 41 and the extension part 45, An extending portion 45 is positioned below each wiping claw 32 (holding piece 32b) (wiping surface G side). The extending portions 45 are provided at two locations in a side view shown in FIG. 3B corresponding to the locations held by the rubber holding portions 31a and 31b. In other words, the non-extending part 46 in which the extension amount of the most part in the longitudinal direction other than the part corresponding to the part held by each rubber holding part 31 a, 31 b of the blade rubber 14 is reduced as compared with the extending part 45. It has become.

  As shown in FIG. 2 and FIG. 4B, the first engagement convex portion 51 and the second engagement convex portion 52 are formed to protrude along the longitudinal direction on the upper surface 41 b of the base portion 41 of the blade rubber 14. Yes. The first and second engaging convex portions 51 and 52 are located on the base end side with respect to the longitudinal center of the blade rubber 14, and the end side thereof is defined as the first engaging convex portion 51. The one in the center in the direction is the second engagement convex portion 52. Between this 1st and 2nd engagement convex parts 51 and 52, as shown in FIG.4 (b), the construction part 33 of the 1st rubber holding part 31a is located. More specifically, the erection part 33 of the first rubber holding part 31a is engaged with the first and second engagement convex parts 51 and 52 in the longitudinal direction. On the other hand, the blade rubber 14 does not have the first and second engaging convex portions 51 and 52 at a position corresponding to the installation portion 33 of the rubber holding portion 31b on the distal end side, and the installation portion 33 of the rubber holding portion 31b is provided with the blade. The rubber 14 is not engaged in the longitudinal direction.

  The first engagement convex portion 51 abuts in the longitudinal direction on the base end side end portion (outer end portion) in the longitudinal direction of the erection portion 33 of the first rubber holding portion 31a at the contact surface 51a, and the second engagement convex portion The portion 52 abuts in the longitudinal direction on the front end side end portion (inner end portion) in the longitudinal direction of the erection portion 33 at the abutment surface 52a. Each of the contact surfaces 51 a and 52 a has a planar shape orthogonal to the longitudinal direction of the blade rubber 14. The distance between the contact surfaces 51 a and 52 a is set slightly smaller than the longitudinal dimension of the erection portion 33. Further, the height H2 of the second engagement convex portion 52 (the vertical dimension of the contact surface 52a) is set smaller than the height H1 of the first engagement convex portion 51 (the vertical dimension of the contact surface 51a). Has been. Further, the first engagement convex portion 51 is formed with an inclined surface 51b that is inclined so as to increase in height toward the center in the longitudinal direction of the blade rubber 14, and the second engagement convex portion 52 has a blade rubber. The inclined surface 52b which inclines so that height may increase as it goes to the longitudinal direction base end side of 14 is formed. The inclination of the inclined surface 52 b of the second engagement convex portion 52 is configured to be gentler than the inclination of the inclined surface 51 b of the first engagement convex portion 51.

  As shown in FIG. 2, the dimension W1 in the width direction of the first engaging convex part 51 is set equal to the dimension WR in the width direction of the upper surface 41b of the base 41. In other words, the first engagement convex portion 51 is formed over the entire width direction of the upper surface 41 b of the base portion 41. The dimension W2 in the width direction of the second engagement convex part 52 is set smaller than the dimension W1 in the width direction of the first engagement convex part 51. In addition, the inclined surface 52b of the 2nd engagement convex part 52 has comprised the shape where the dimension of the width direction becomes wide from the front end side to the base end side.

  When the blade rubber 14 is assembled to the holder member 13, the base 41 of the blade rubber 14 is inserted in the longitudinal direction from the tip side in the order of the rubber holding portion 31a and the rubber holding portion 31b. At this time, the second engagement convex portion 52 located on the front side in the insertion direction reaches the installation portion 33 of the rubber holding portion 31a before the first engagement convex portion 51. Then, the erection part 33 gets over the second engagement convex part 52 while being in sliding contact with the inclined surface 52 b, and is fitted between the first and second engagement convex parts 51, 52. Here, since the height H2 of the second engagement convex portion 52 on the front side in the insertion direction is set to be smaller than the height H1 of the first engagement convex portion 51, the installation portion 33 of the rubber holding portion 31a is the first one. It is possible to make it easier to get over the two engaging convex portions 52. In addition, since the dimension W2 in the width direction of the second engagement convex part 52 on the front side in the insertion direction is set smaller than the dimension W1 in the width direction of the first engagement convex part 51, the installation of the rubber holding part 31a is performed. It is possible to reduce the friction when the portion 33 gets over the second engaging convex portion 52, thereby making it easier for the erection portion 33 to get over the second engaging convex portion 52. Yes. In the present embodiment, the blade rubber 14 can be easily assembled to the holder member 13 by the dimension setting as described above.

The operation of the above embodiment will be described below.
Since the first and second engaging convex portions 51 and 52 of the blade rubber 14 are in contact with the longitudinal ends of the erection portion 33 of the rubber holding portion 31a in the longitudinal direction, the movement of the blade rubber 14 in the longitudinal direction is restricted. Has been. Thereby, the blade rubber 14 is prevented from coming off from the rubber holding portions 31a and 31b of the holder member 13 in the longitudinal direction. In this way, by using the erection part 33 for pressing the blade rubber 14 against the wiping surface G, the movement of the blade rubber 14 in the longitudinal direction is not added to the holder member 13 separately, and the movement is performed. Regulations are being realized. Further, since the upper surface 41b of the base 41 has a higher degree of design freedom in terms of shape, size, etc., compared to the case where it is provided in the holding groove 41c of the blade rubber 14, the first and second engaging protrusions are formed on the upper surface 41b of the base 41. It is easy to set the portions 51 and 52 large in the width direction. Therefore, compared to the configuration in which the movement restriction of the blade rubber 14 is performed at the distal end portion of the holding claw 32, the movement restriction in the longitudinal direction of the blade rubber 14 can be strengthened.

  Further, when wiping the wiping surface G, the blade rubber 14 follows the curve of the wiping surface G according to the wiping position over the entire longitudinal direction. Here, the blade rubber 14 is restricted from moving in the longitudinal direction only by the rubber holding portion 31a on the proximal end side, and is allowed to move in the longitudinal direction at the rubber holding portion 31b on the distal end side. The curve following ability is improved.

  Further, when the vehicle wiper 10 is changed from a locked back state (a state where the wiper arm 11 stands on the wiping surface G) to a normal use state (a state where the blade rubber 14 is in contact with the wiping surface G), the blade rubber is used. There is a possibility that the base end portion of 14 hits the wiping surface G. Here, in the present embodiment, the blade rubber 14 is moved from the base end portion of the blade rubber 14 that falls with the wiper arm 11 because the movement of the blade rubber 14 in the longitudinal direction is restricted by the rubber holding portion 31a on the base end side instead of the tip end side. The distance to the rubber holding portion 31a for regulation can be shortened. As a result, the impact when the base end portion of the blade rubber 14 hits the wiping surface G is small compared to the front end side, and the rubber holding on the base end side is maintained. It is further difficult to come off from the portion 31a.

Next, characteristic effects of the present embodiment will be described.
(1) In the present embodiment, the rubber holding portions 31 a and 31 b are spanned between the holding claws 32 in the width direction, and are in contact with the upper surface 41 b of the base portion 41 to be applied to the holder member 13. An erection portion 33 that transmits the pressing force to the blade rubber 14 is formed. The upper surface 41b of the base 41 is provided with a first engaging convex portion 51 and a second engaging convex portion 52 that respectively engage with both longitudinal ends of the erection portion 33 of the first rubber holding portion 31a in the longitudinal direction. It is done. Therefore, the longitudinal movement of the blade rubber 14 can be restricted by the longitudinal engagement between the first and second engaging convex portions 51 and 52 of the blade rubber 14 and the erection portion 33 of the holder member 13. It becomes. That is, by using the erection part 33 for pressing the blade rubber 14 against the wiping surface G, the movement restriction in the longitudinal direction of the blade rubber 14 is not added to the holder member 13 separately. Can be realized. Further, since the upper surface 41b of the base 41 has a higher degree of design freedom than the case where it is provided in the holding groove 41c of the blade rubber 14, the first and second engaging convex portions 51 and 52 are made to have a width on the upper surface 41b of the base 41. It is easy to set large in the direction. Therefore, compared to the configuration in which the movement restriction of the blade rubber 14 is performed at the tip of the holding claw 32, the movement restriction in the longitudinal direction of the blade rubber 14 can be strengthened.

  (2) In the present embodiment, among the first and second engaging protrusions 51 and 52, the height H2 of the second engaging protrusion 52 arranged on the front side in the insertion direction of the blade rubber 14 is the first. It is set to be smaller than the height H1 of the engaging convex portion 51. For this reason, when the blade rubber 14 is inserted into the rubber holding portions 31a and 31b of the holder member 13 in the longitudinal direction, the erection portion 33 can easily get over the second engagement convex portion 52 on the front side in the insertion direction. Thereby, the blade rubber 14 can be easily assembled to the holder member 13.

  (3) In the present embodiment, among the first and second engaging convex portions 51 and 52, the width direction dimension W2 of the second engaging convex portion 52 disposed on the front side in the insertion direction of the blade rubber 14 is: It is set smaller than the dimension W1 in the width direction of the first engagement convex portion 51. For this reason, when the blade rubber 14 is inserted into the rubber holding portions 31a and 31b of the holder member 13 in the longitudinal direction, friction when the erection portion 33 gets over the second engagement convex portion 52 on the front side in the insertion direction is reduced. Therefore, the erection part 33 can easily get over the second engagement convex part 52. Thereby, the blade rubber 14 can be easily assembled to the holder member 13.

  (4) In the present embodiment, the erection part 33 for pressing the blade rubber 14 against the wiping surface G is inside the inverted U-shaped cross section of the holder member 13, that is, inside the upper wall part 21 and the side wall part 22. The first and second engaging convex portions 51 and 52 for restricting the movement of the blade rubber 14 in the longitudinal direction using the erected portion 33 are also formed in an inverted U-shaped cross section of the holder member 13. Covered inside. As a result, the appearance of the wiper blade 12 can be improved, and material deterioration due to ultraviolet rays or the like of the first and second engaging convex portions 51 and 52 can be suppressed.

In addition, you may change embodiment of this invention as follows.
In the above-described embodiment, the first engaging convex portion 51 is configured to contact the installation portion 33 in the longitudinal direction, but is not particularly limited thereto. For example, as illustrated in FIG. You may comprise so that the 1st engagement convex part 61 projected and formed in the upper surface 41b may contact | abut to the longitudinal direction edge part (1st end 13a) of the holder member 13 in a longitudinal direction. Even in such a configuration, the movement of the blade rubber 14 in the longitudinal direction can be restricted. In the example shown in FIG. 5, the first engagement convex portion 61 is configured to form a continuous slope with the upper wall portion 21 of the holder member 13. It is possible to improve the appearance of the holder member 13 by making the gap with the blade rubber 14 small.

  In the above embodiment, the first and second engaging protrusions 51 and 52 are configured to engage with the rubber holding portion 31a on the proximal end side, but engage with the rubber holding portion 31b on the distal end side. It may be configured.

-The height H1, H2 of the 1st and 2nd engagement convex parts 51 and 52 in the said embodiment, and the dimension W1, W2 and shape of the width direction may be changed suitably according to a structure.
-In the above-mentioned embodiment, although two rubber holding parts 31a and 31b were provided, it is not specifically limited to this and may provide three or more.

-In above-mentioned embodiment, although the holder member 13 was comprised from one member, it is not specifically limited to this, You may comprise from a some member.
-The shape of the holder member 13 and the blade rubber 14 in the said embodiment may be suitably changed according to a structure.

  In the above embodiment, the present invention is applied to the vehicle wiper 10 for wiping the windshield of the vehicle. However, for example, the present invention may be applied to a wiper for wiping the rear glass of the vehicle.

  DESCRIPTION OF SYMBOLS 10 ... Wiper for vehicles, 11 ... Wiper arm, 12 ... Wiper blade, 13 ... Holder member, 14 ... Blade rubber, 31a ... 1st rubber holding part, 31b ... 2nd rubber holding part, 32 ... Holding claw, 33 ... Installation part 41 ... Base part, 41a ... Mounting groove, 41b ... Upper surface of the base part, 42 ... Backing, 44 ... Wiping part, 51, 61 ... First engaging convex part, 52 ... Second engaging convex part, G ... Wiping surface, H1... Height of the first engaging convex portion, H2... Height of the second engaging convex portion, W1... Dimension in the width direction of the first engaging convex portion, W2. , X ... following end.

Claims (3)

Blade rubber to wipe the wiping surface;
A backing made of a spring material having a predetermined rigidity and having a central portion curved in a convex shape toward the side opposite to the wiping surface, and fitted in an attachment groove formed in the longitudinal direction of the blade rubber;
A first rubber holding portion and a second rubber provided at a first end side and a second end side portion respectively extending in the longitudinal direction of the blade rubber and having a longitudinal center connected to a tip portion of the wiper arm An elongated holder member that holds a base portion formed in the longitudinal direction of the blade rubber at the holding portion, and each rubber holding portion has a holding claw that makes a pair in the width direction,
The base portion of the blade rubber is inserted in the longitudinal direction between the holding claws of each rubber holding portion and is held in the width direction by the holding claws,
A wiper blade configured to follow the curve of the wiping surface by causing the blade rubber to protrude in the longitudinal direction outside the first and second rubber holding portions of the holder member,
The rubber holding portions are spanned in the width direction between the holding claws, and contact the upper surface of the base portion to transmit the pressing force to the wiping surface applied to the holder member to the blade rubber. The erection part is formed,
On the upper surface of the base portion, a first engagement convex portion that engages in a longitudinal direction with an outer end portion in the longitudinal direction of the installation portion of the first rubber holding portion or the first end of the holder member, and the first A wiper blade characterized in that a second engagement convex portion that is engaged with a longitudinally inner end portion of the erection portion of the rubber holding portion in the longitudinal direction is provided. The wiper blade according to claim 1,
Of the first and second engaging convex portions, the height of the second engaging convex portion arranged on the front side in the insertion direction of the blade rubber is set smaller than the height of the first engaging convex portion. A wiper blade characterized by being made. The wiper blade according to claim 1 or 2,
Of the first and second engagement protrusions, the width direction dimension of the second engagement protrusion disposed on the front side in the insertion direction of the blade rubber is the width direction of the first engagement protrusion. A wiper blade characterized by being set smaller than the dimensions.

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